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History log of /src/sys/external/bsd/dwc2
RevisionDateAuthorComments
 1.81 05-Apr-2024  riastradh usb *hci: Always set ux_status before usbd_xfer_schedule_timeout.

Add an assert to usbd_xfer_schedule_timeout to enforce this.

Since access to ux_status is serialized by the bus lock, and nothing
releases the bus lock in the interim, this doesn't make a functional
change. But it does reduce confusion by readers, who no longer have
to worry if some callers got the order wrong. It could also now
potentially be factored out in a subsequent commit.
 1.80 03-Mar-2022  riastradh usb: Hold pipe lock across upm_transfer and upm_start.

This simplifies the code and fixes races with abort. Access to the
pipe's queue is now done exclusively while the pipe is locked.
 1.79 03-Mar-2022  riastradh usb: Factor usb_transfer_complete out of ubm_abortx method.
 1.78 03-Mar-2022  riastradh usb: Factor usb_insert_transfer out of upm_transfer and make private.

Almost every upm_transfer function starts with:

mutex_enter(&sc->sc_lock);
err = usb_insert_transfer(xfer);
mutex_exit(&sc->sc_lock);
if (err)
return err;

Some of them have debug messages sprinkled in here too, or assert
that err == USBD_NORMAL_COMPLETION (alternative is USBD_IN_PROGRESS,
only for pipes with up_running or up_serialise, presumably not
applicable for these types of pipes). Some of them also assert
xfer->ux_status == USBD_NOT_STARTED, which is guaranteed on entry and
preserved by usb_insert_transer.

Exceptions:

- arch/mips/adm5120/dev/ahci.c ahci_device_isoc_transfer just returns
USBD_NORMAL_COMPLETION, but I'm pretty sure this is and always has
been broken anyway, so won't make anything worse (if anything, might
make it better...)

- external/bsd/dwc2/dwc2.c dwc2_device_bulk_transfer and
dwc2_device_isoc_transfer _also_ issue dwc2_device_start(xfer)
under the lock. This is probably a better way to do it, but let's
do it uniformly across all HCIs at once.

- rump/dev/lib/libugenhc/ugenhc.c rumpusb_device_bulk_transfer
sometimes returns USBD_IN_PROGRESS _without_ queueing the transfer,
in the !rump_threads case. Not really sure how this is supposed to
work... If it actually breaks anything, we can figure it out.
 1.77 21-Dec-2021  skrll Change the usb_mem API to take a bus_dma_tag_t in usb_allocmem instead of
a struct usbd_bus *.

This allows an HCD to use more than one tag.
 1.76 07-Jan-2021  skrll More converstion from usbd_status to int for function error reporting.
This time it's the turn of usb_allocmem.

(missed in previous commit)
 1.75 22-Dec-2020  riastradh usb: Omit bogus assertions about struct usbd_pipe::up_intrxfer.

These assertions were only valid for pipes at UE_IN_DIR, UE_INTERRUPT
endpoints created with usbd_open_pipe_intr, which uses up_intrxfer to
pass the struct usbd_xfer object to usbd_close_pipe to free later.

In contrast, for pipes at UE_OUT_DIR, UE_INTERRUPT endpoints,
up_intrxfer is never initialized, so the assertion cannot be right.
In principle we might even have more than one outstanding interrupt
transfer at a time, rendering the point of the assertion moot anyway.

Found by interrupting a uhidev write to a u2f device.

ok nick
 1.74 15-May-2020  skrll branches: 1.74.2;
Update ux_length in usbd_setup_isoc_xfer and use this to usb_syncmem
in the HCDs
 1.73 05-Apr-2020  skrll Switch USB to use non-coherent buffers for data transfers in the
same way as OpenBSD.

The use of coherent (uncacheable on ARM and other arches) mappings
for transfer buffers impacts performance, espcially where memcpys
are involved.

Audit the necessary usb_syncmem operations - a few were missing.
 1.72 21-Feb-2020  skrll Fix a memory leak. Spotted by nat@
 1.71 15-Feb-2020  riastradh #ifdef DIAGNOSTIC --> __diagused
 1.70 15-Feb-2020  riastradh Fix non-DIAGNOSTIC builds.
 1.69 15-Feb-2020  riastradh Fix mistakes in previous sloppy change with root intr xfers.

- Make sure ux_status is set to USBD_IN_PROGRESS when started.
Otherwise, if it is still in flight when we abort the pipe,
usbd_ar_pipe will skip calling upm_abort.

- Initialize ux_status under the lock; in principle a completion
interrupt (or a delay) could race with the initialization.

- KASSERT that the xfer is in progress when we're about to complete
it.

Candidate fix for PR kern/54963 for other HCI drivers than uhci.

ok nick
ok phone

(This is the change that nick evidently MEANT to ok when he ok'd the
previous one!)
 1.68 12-Feb-2020  riastradh Fix steady state of root intr xfers.

Why?

- Avoid completing a root intr xfer multiple times in races.
- Avoid potential use-after-free in poll_hub callouts (uhci, ahci).

How?

- Use sc->sc_intr_xfer or equivalent to store only a pending xfer
that has not yet completed -- whether successfully, by timeout, or
by synchronous abort. When any of those happens, set it to null
under the lock, so the xfer is completed only once.

- For hci drivers that use a callout to poll the root hub (uhci, ahci):

. Pass the softc pointer, not the xfer, to the callout, so the
callout is not even tempted to use xfer after free -- if the
callout fires, but the xfer is synchronously aborted before the
callout can do anything, the xfer might be freed by the time the
callout starts to examine it.

. Teach the callout to do nothing if it is callout_pending after it
has fired. This way:

1. completion or synchronous abort can just callout_stop
2. start can just callout_schedule

If the callout had already fired before (1), and doesn't acquire
the bus lock until after (2), it may be tempted to abort the new
root intr xfer just after submission, which would be wrong -- so
instead we just have the callout do nothing if it notices it has
been rescheduled, since it will fire again after the appropriate
time has elapsed.
 1.67 12-Feb-2020  riastradh Factor out HCI-independent xfer completion logic.

New API for HCI drivers to synchronize hardware completion
interrupts, synchronous aborts, and asynchronous timeouts:

- When submitting an xfer to hardware, call
usbd_xfer_schedule_timeout(xfer).

- On HCI completion interrupt for xfer completion:

if (!usbd_xfer_trycomplete(xfer))
return; /* timed out or aborted, ignore it */

- In upm_abort methods, call usbd_xfer_abort(xfer).

For HCI drivers that use this API (not needed in drivers that don't,
or for xfers like root intr xfers that don't use it):

- New ubm_abortx method serves role of former *hci_abort_xfer, but
without any logic for wrangling timeouts/callouts/tasks -- caller
in usbd_xfer_abort has already handled them.

- New ubm_dying method, returns true if the device is in the process
of detaching, used by the timeout logic.

Converted and tested:
- ehci
- ohci

Converted and compile-tested:
- ahci (XXX did this ever work?)
- dwc2
- motg (XXX missing usbd_xfer_schedule_timeout in motg_*_start?)
- uhci
- xhci

Not changed:

- slhci (sys/dev/ic/sl811hs.c) -- doesn't use a separate per-xfer
callout for timeouts (XXX but maybe should?)

- ugenhc (sys/rump/dev/lib/libugenhc/ugenhc.c) -- doesn't manage its
own transfer timeouts

- vhci -- times transfers out only on detach; could be adapted easily
if we wanted to use the xfer->ux_callout
 1.66 04-Dec-2019  skrll branches: 1.66.2;
Consistency.
 1.65 03-Dec-2019  jmcneill build fix
 1.64 03-Dec-2019  skrll Calulate the right lenght for isoc transfer and the usb_syncmem

PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+
 1.63 03-Dec-2019  skrll Use size_t for loop count variable
 1.62 03-Dec-2019  skrll Need <sys/sysctl.h> for previous
 1.61 03-Dec-2019  skrll Make dwc2debug sysctl'able
 1.60 03-Dec-2019  skrll KNF
 1.59 19-Mar-2019  ryo branches: 1.59.4;
- dwc2 need calling linux_workqueue_init() to avoid panic.
- use INIT_ONCE/FINI_ONCE to linux_workqueue_{init,fini}() for being called from dwc2.

TODO: dwc2 should be written as kernel module depenging on a linux module.
 1.58 17-Feb-2019  rin Fix assertion failures triggered by usbdi.c,v 1.182, when devices
are detached.

This is because xfers of USBD_NOT_STARTED can be removed from queue
in an invisible way to host controller drivers.

Discussed on tech-kern.
 1.57 22-Jan-2019  skrll Revert the KASSERT
 1.56 22-Jan-2019  skrll Add a KASSERT
 1.55 16-Sep-2018  mrg consolidate the handling of polling across HC drivers, and generic USB:
- don't take mutexes if polling
- normalise the code across all drivers
- add some not yet code to block discovery to/from polling
- minor CSE
- adjust comment for usbd_set_polling() to reality now i properly
understand what it is used for and why.

this, with a hack to make RB_ASKNAME to wait 5 seconds allows boot -a
work with USB keyboards. there are still multiple issues remaining:
- discovery and polling need to be mutually exclusive
- attachment of ukbd and wskbd is not handled by config_pending, and
the 5 second delay isn't going to always be enough.
 1.54 28-Aug-2018  skrll Fix non-DIAGNOSTIC build
 1.53 10-Aug-2018  rin Fix debug build. Also make formats more consistent with others in
DPRINTF added in the previous commit.
 1.52 09-Aug-2018  mrg pull across abort fixes from nick-nhusb. add more abort fixes, using
ideas from Taylor and Nick, and myself. special thanks to both who
inspired much of the code here, if not wrote it directly.

among other problems, this assert should no longer trigger:

panic: kernel diagnostic assertion "xfer->ux_state == XFER_ONQU" failed: file "/current/src/sys/dev/usb/usbdi.c", line 914

using usbhist i was able to track down my instance of it being related
to userland close() beginning, dropping the sc_lock, and then the usb
softintr completes the transfer normally, and when it is done, the
abort path attempts to re-complete the transfer, and the above assert
is tripped.


changes from nhusb were commited with these logs:
--
Move the struct usb_task to struct usbd_xfer for everyone to use.
--
Set device transfer status to USBD_IN_PROGRESS if start methods succeeds
--
Actually set the transfer status on transfers in ohci_abort_xfer and
the controller is dying
--
Don't supply the lock to callout_halt when polling as it won't be held
--
Improve transfer abort
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--
#ifdef DIAGNOSTIC -> KASSERT and add another KASSERT
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--

additional changes include:
- initialise the usb abort task in the HCI allocx routine, so that it
can be safely usb_rem_task()'d.
- rework the handling of softintr vs cancellation vs timeout abort based
upon a scheme from Taylor:
when completing a transfer normally:
- if the status is not in progress, it must be cancelled or timed out,
and we should not process this xfer.
- set the status as normal.
- unconditionallly callout_stop() and usb_rem_task(). they're safe and
either aren't running, or will run and do nothing.
- finally call usb_transfer_complete().
when aborting a transfer:
- status should be cancelled or timed out.
- if cancelling, callout_halt and usb_rem_task_wait() to make sure the
timer is either done or cancelled.
- at this point, the ux_status must not be cancelled or timed out, and
if it is not in progress we're done.
- set the status.
- if the controller is dying, just return.
- perform HCI-specific tasks to abort this xfer.
- finally call usb_transfer_complete().
for the timeout and timeout task:
- if the HCI is not dying, and the ux_status is in progress, then
trigger the usb abort task.
- remove UXFER_ABORTWAIT and UXFER_ABORTING.

tested on:
- multiple PC systems with several types of devices: ugen/UPS, ucom,
umass with disk, ssd and cdrom backends, kbd, ms, using uhci, ehci
and xhci.
- erlite3: sd@umass on dwc2.
- sunblade2000: kbd/ms and umass disk on ohci.

untested:
- motg, slhci and ahci. motg has some portion of the new scheme
applied, but slhci and ahci require more study.

future work includes pushing a lot of the common abort handling into
usbdi.c and leaving upm_abort() for HC specific tasks, but this change
is pullup-able to netbsd-7 and netbsd-8 as it does not change any
external API, as well as removing over 100 lines of code while adding
over 30 new asserts.

XXX: pullup-7, pullup-8.
 1.51 07-Aug-2018  skrll aprint_verbose the core version
 1.50 07-Aug-2018  rin Do not call usb_syncmem(9) with len = 0 to avoid diagnostic assertion
failure in bus_dmamap_sync(9) on Raspberry Pi 3 Model B running in
aarch64 mode.

Workaround for PR port-evbarm/53503.
 1.49 09-Apr-2018  jakllsch branches: 1.49.2;
Stop potential misuse of vendor names and USB vendor IDs in root hub
device and string descriptors.

Firstly: Few vendors have identical PCI-SIG vendor IDs and USB-IF vendor
IDs. As such, using the PCI vendor ID as a USB vendor ID may trample
on whomever is allocated that USB vendor ID.

Secondly: The vendor of the host controller hardware implementation has
little to nothing to do with our usbroothub implementation. Thus we
should not potentially associate any problems therewith to such third
party.

This change will result in root hubs being identified by USB Vendor ID
0x0000. Root hub vendor string will now be "NetBSD" (or, specifically:
ostype). Product ID (0x0000) and product strings remain unchanged.
 1.48 01-Feb-2018  msaitoh branches: 1.48.2;
Fix KASSERT panic. When detaching USB host controoler, the following panic
occured:
kernel diagnostic assertion "sc->sc_intrxfer == xfer" failed: file "../../../../dev/usb/ohci.c", line 1720
Clear sc_intrxfer correctly. Adviced by Nick and tested by me.
 1.47 17-Nov-2017  skrll s/PR_NOWAIT/PR_WAITOK/ in HCD allocx (allocate xfer) method
 1.46 01-Jun-2017  chs branches: 1.46.2;
remove checks for failure after memory allocation calls that cannot fail:

kmem_alloc() with KM_SLEEP
kmem_zalloc() with KM_SLEEP
percpu_alloc()
pserialize_create()
psref_class_create()

all of these paths include an assertion that the allocation has not failed,
so callers should not assert that again.
 1.45 04-Dec-2016  skrll Add a missing usb_syncmem(... BUS_DMASYNC_PRE{READ,WRITE}) for the
transfer buffer
 1.44 14-Aug-2016  skrll Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.

Should fix/help
kern/49065 - ifconfig tun0 ... sequence locks up system / lockup: softnet_lock held across usb xfr
kern/50491 - unkillable wait in usbd_transfer while using usmsc0 on raspberry pi 2
kern/51395 - USB Ethernet makes xhci hang

and probably others
 1.43 06-May-2016  skrll branches: 1.43.2;
usb is attached with config_interrupts so we can G/C the code to support
transfers when this wasn't the case.
 1.42 23-Apr-2016  skrll Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
 1.41 24-Feb-2016  skrll Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.40 24-Feb-2016  skrll Trailing whitespace.
 1.39 14-Feb-2016  skrll Update for latest dwc2 dist
 1.38 22-Dec-2015  skrll Stop the callout if the transfer didn't get enqueued
 1.37 30-Aug-2015  skrll Update for latest dwc2
 1.36 30-Aug-2015  skrll Whitespace
 1.35 23-Aug-2015  skrll Move rd assignment. Spotted by christos@. Thanks.
 1.34 23-Aug-2015  skrll Do BUS_DMASYNC_POST{READ,WRITE} on transfer buffers appropriately
 1.33 18-Aug-2015  skrll Whitespace.
 1.32 02-Sep-2014  macallan branches: 1.32.2;
dwc2_hubd appears to be unused so #if 0 it in order to appease clang
 1.31 05-Aug-2014  skrll branches: 1.31.2; 1.31.4;
Remove #ifdef DIAGNOSTIC around sc from the root interrupt abort methods
now it's always used.
 1.30 05-Aug-2014  skrll Prevent the root hub sending updates once the root interrupt abort is
called.
 1.29 05-Aug-2014  skrll Simplify the freeing of the interrupt pipe transfer. Inspired by OpenBSD.
 1.28 28-Jun-2014  skrll Use DWC2_XFER2DPIPE
 1.27 27-Jun-2014  skrll Use the right macro in dwc2_root_intr_start
 1.26 03-Jan-2014  skrll branches: 1.26.2; 1.26.4; 1.26.6;
Small bit of tidyup and remove a XXX now that it's possible.
 1.25 03-Jan-2014  skrll Call callout_reset on the xfer timeoute_handle before calling
dwc2_hcd_urb_enqueue
 1.24 03-Jan-2014  skrll Change a KASSERT to a KASSERTMSG and add a DPRINTFN.
 1.23 02-Jan-2014  skrll Protect access of urb->hcpriv by adapting the following change from the
Raspberry PI dwc_otg driver.

https://github.com/raspberrypi/linux/commit/38753ce72d4f10d5d0f1ed27fa691a2ba8910941

dwc_otg: prevent OOPSes during device disconnects

The dwc_otg_urb_enqueue function is thread-unsafe. In particular the
access of urb->hcpriv, usb_hcd_link_urb_to_ep, dwc_otg_urb->qtd and
friends does not occur within a critical section and so if a device
was unplugged during activity there was a high chance that the
usbcore hub_thread would try to disable the endpoint with partially-
formed entries in the URB queue. This would result in BUG() or null
pointer dereferences.

Fix so that access of urb->hcpriv, enqueuing to the hardware and
adding to usbcore endpoint URB lists is contained within a single
critical section.
 1.22 31-Dec-2013  skrll KASSERT that the transfer callout is not pending.

Removes a XXX
 1.21 28-Nov-2013  skrll Drop the intr_lock when calling usb_schedsoftintr so that we don't lock
against ourself in dwc2_softintr in the polling case.
 1.20 19-Nov-2013  skrll Zeroise the whole urb including the iso_descs array
 1.19 19-Nov-2013  skrll Correct the interval assignment for isoc and intr transfers.
 1.18 19-Nov-2013  skrll Use PRIxBUSADDR in DPRINTF. Problem pointed out by kiyohara.
 1.17 14-Nov-2013  skrll Remove unused variable.
 1.16 01-Nov-2013  skrll Don't always define DWC2_DEBUG
 1.15 22-Oct-2013  skrll Remove unused usbd_xfer_handle from dwc2_pipe.
 1.14 22-Oct-2013  skrll Minor cleanup.
 1.13 22-Oct-2013  skrll Remove daft KASSERTs
 1.12 15-Oct-2013  skrll Make this compile for more option combinations.
 1.11 15-Oct-2013  skrll Translate ENODEV to USBD_INVAL
 1.10 02-Oct-2013  skrll At least attempt to handle USBD_DEFAULT_INTERVAL.
 1.9 02-Oct-2013  skrll A small code simplification
 1.8 02-Oct-2013  skrll Pass any error from dwc2_device_start upwards.
 1.7 27-Sep-2013  skrll First pass at isoc transfer support - seems to work. More testing
required.
 1.6 27-Sep-2013  skrll Tidyup dwc2_host_is_b_hnp_enabled
 1.5 27-Sep-2013  skrll Missed a sc->sc_intr_lock to hsotg->lock change from earlier commit.
 1.4 27-Sep-2013  skrll Improve a couple of DPRINTFs
 1.3 27-Sep-2013  skrll Use the hsotg->lock spin lock solely
 1.2 21-Sep-2013  skrll Improve a couple of DPRINTFs
 1.1 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.26.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.26.6.1 03-Jan-2014  yamt file dwc2.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.26.4.2 18-May-2014  rmind sync with head
 1.26.4.1 03-Jan-2014  rmind file dwc2.c was added on branch rmind-smpnet on 2014-05-18 17:46:01 +0000
 1.26.2.1 10-Aug-2014  tls Rebase.
 1.31.4.3 03-Dec-2017  jdolecek update from HEAD
 1.31.4.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.31.4.1 05-Aug-2014  tls file dwc2.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.31.2.5 05-Dec-2019  bouyer Pull up following revision(s) (requested by skrll in ticket #1716):
sys/external/bsd/dwc2/dwc2.c: revision 1.60
sys/external/bsd/dwc2/dwc2.c: revision 1.61
sys/external/bsd/dwc2/dwc2.c: revision 1.62
sys/external/bsd/dwc2/dwc2.c: revision 1.63
sys/external/bsd/dwc2/dwc2.c: revision 1.64
sys/external/bsd/dwc2/dwc2.c: revision 1.65
sys/external/bsd/dwc2/dwc2.c: revision 1.66
KNF
Make dwc2debug sysctl'able
Need <sys/sysctl.h> for previous
Use size_t for loop count variable
Calulate the right lenght for isoc transfer and the usb_syncmem
PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+
build fix
Consistency.
 1.31.2.4 25-Aug-2018  martin Pull up following revision(s) (requested by mrg in ticket #1632):

sys/dev/usb/usbdivar.h: revision 1.117
sys/external/bsd/dwc2/dwc2.c: revision 1.52
sys/dev/usb/xhcivar.h: revision 1.10
sys/dev/usb/motg.c: revision 1.22
sys/dev/usb/ehci.c: revision 1.260
sys/dev/usb/ehci.c: revision 1.261
sys/dev/usb/xhci.c: revision 1.96
sys/dev/usb/ohci.c: revision 1.282
sys/dev/usb/ohci.c: revision 1.283
sys/dev/usb/ehcivar.h: revision 1.45
sys/dev/usb/uhci.c: revision 1.281
sys/dev/usb/uhci.c: revision 1.282
sys/dev/usb/usbdi.c: revision 1.177
sys/dev/usb/ohcivar.h: revision 1.60
sys/dev/usb/uhcivar.h: revision 1.55
(all via patch)

pull across abort fixes from nick-nhusb. add more abort fixes, using
ideas from Taylor and Nick, and myself. special thanks to both who
inspired much of the code here, if not wrote it directly.

among other problems, this assert should no longer trigger:

panic: kernel diagnostic assertion "xfer->ux_state == XFER_ONQU" failed: file "/current/src/sys/dev/usb/usbdi.c", line 914

using usbhist i was able to track down my instance of it being related
to userland close() beginning, dropping the sc_lock, and then the usb
softintr completes the transfer normally, and when it is done, the
abort path attempts to re-complete the transfer, and the above assert
is tripped.

changes from nhusb were commited with these logs:
--
Move the struct usb_task to struct usbd_xfer for everyone to use.
--
Set device transfer status to USBD_IN_PROGRESS if start methods succeeds
--
Actually set the transfer status on transfers in ohci_abort_xfer and
the controller is dying
--
Don't supply the lock to callout_halt when polling as it won't be held
--
Improve transfer abort
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--

additional changes include:
- initialise the usb abort task in the HCI allocx routine, so that it
can be safely usb_rem_task()'d.
- rework the handling of softintr vs cancellation vs timeout abort based
upon a scheme from Taylor:
when completing a transfer normally:
- if the status is not in progress, it must be cancelled or timed out,
and we should not process this xfer.
- set the status as normal.
- unconditionallly callout_stop() and usb_rem_task(). they're safe and
either aren't running, or will run and do nothing.
- finally call usb_transfer_complete().
when aborting a transfer:
- status should be cancelled or timed out.
- if cancelling, callout_halt and usb_rem_task_wait() to make sure the
timer is either done or cancelled.
- at this point, the ux_status must not be cancelled or timed out, and
if it is not in progress we're done.
- set the status.
- if the controller is dying, just return.
- perform HCI-specific tasks to abort this xfer.
- finally call usb_transfer_complete().
for the timeout and timeout task:
- if the HCI is not dying, and the ux_status is in progress, then
trigger the usb abort task.
- remove UXFER_ABORTWAIT and UXFER_ABORTING.

tested on:
- multiple PC systems with several types of devices: ugen/UPS, ucom,
umass with disk, ssd and cdrom backends, kbd, ms, using uhci, ehci
and xhci.
- erlite3: sd@umass on dwc2.
- sunblade2000: kbd/ms and umass disk on ohci.

untested:
- motg, slhci and ahci. motg has some portion of the new scheme
applied, but slhci and ahci require more study.

future work includes pushing a lot of the common abort handling into
usbdi.c and leaving upm_abort() for HC specific tasks, but this change
is pullup-able to netbsd-7 and netbsd-8 as it does not change any
external API, as well as removing over 100 lines of code while adding
over 30 new asserts.

XXX: pullup-7, pullup-8.

fix DIAGNOSTIC build by not copying ub_usepolling to stack before use

Sprinkle __diagused
 1.31.2.3 03-Jan-2018  snj Pull up following revision(s) (requested by skrll in ticket #1529):
sys/dev/usb/ehci.c: revision 1.257
sys/dev/usb/motg.c: revision 1.19
sys/dev/usb/ohci.c: revision 1.276
sys/dev/usb/uhci.c: revision 1.279
sys/dev/usb/xhci.c: revision 1.77
sys/external/bsd/dwc2/dwc2.c: revision 1.47
s/PR_NOWAIT/PR_WAITOK/ in HCD allocx (allocate xfer) method
 1.31.2.2 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.31.2.1 15-May-2015  snj branches: 1.31.2.1.4;
Pull up following revision(s) (requested by joerg in ticket #772):
sys/arch/arm/amlogic/amlogic_genfb.c: revision 1.4
sys/arch/arm/arm/disassem.c: revision 1.25
sys/arch/arm/omap/am335x_cm_padconf.c: revision 1.3
sys/arch/arm/omap/sitara_cm.h: revision 1.2
sys/dev/ic/i82557var.h: revision 1.51
sys/dev/ic/rtl8169.c: revision 1.143
sys/dev/ieee1394/fwcrom.c: revision 1.17
sys/external/bsd/dwc2/dwc2.c: revision 1.32
dwc2_hubd appears to be unused so #if 0 it in order to appease clang
--
Preserve const.
--
No reason not to make the string const.
--
Drop unnecessary-but-harmful casts.
--
Replace void * cast with proper __UNVOLATILE.
--
Preserve const.
--
amlogic_genfb_hdmi_write_4 is currently unused, mark it as such.
 1.31.2.1.4.2 26-Jan-2017  skrll Sync with HEAD/nhusb
 1.31.2.1.4.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.32.2.31 28-Aug-2017  skrll Sync with HEAD
 1.32.2.30 29-Dec-2016  skrll Improve the transfer abort process.
 1.32.2.29 05-Dec-2016  skrll Sync with HEAD
 1.32.2.28 10-Jun-2016  skrll Use SOFTINT_SERIAL for the USB stack (the 'S' stands for serial).

This is a step in the right direction towards fixing

kern/50491: unkillable wait in usbd_transfer while using usmsc0 on
raspberry pi 2

kern/49065: ifconfig tun0 ... sequence locks up system

but further analysis of locking of the usb drivers is required.
 1.32.2.27 29-May-2016  skrll Sync with HEAD
 1.32.2.26 30-Apr-2016  skrll Move the struct usb_task to struct usbd_xfer for everyone to use.
 1.32.2.25 19-Mar-2016  skrll Sync with HEAD
 1.32.2.24 17-Mar-2016  skrll All HCDs were fighting the seriaisation of transfers in usbdi.c for isoc
transfers. Instead allow the HCDs to specify which pipes can handle
removing this serialisation and apply it appropriately.

dwctwo(4) can handle this for all transfer types, but only enable
bulk/isoc for now.
 1.32.2.23 05-Mar-2016  skrll Whitespace
 1.32.2.22 05-Mar-2016  skrll Fix a KASSERT.

I've managed to record via uaudia(4) on Raspberry PI now.
 1.32.2.21 04-Mar-2016  skrll Appease KASSERTs
 1.32.2.20 01-Mar-2016  skrll Re-initialise dwc2_urb->packet_count after the memset(dwc2_urb, 0, ...)
 1.32.2.19 01-Mar-2016  skrll Whitespace
 1.32.2.18 28-Feb-2016  skrll Centralise the up_repeat handling and use the standard pipe method to
start the next transfer. This allows the removal of a bunch of code
in the upm_done methods for interrupt transfers which had copies of
the upm_start method code.

At the same time we can perform the upm_done method before calling the
transfer callback allowing correct bus_dma(9) operations before
using the transfer DMA buffer.
 1.32.2.17 27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.32.2.16 23-Dec-2015  skrll Revert previous... I got ahead of myself
 1.32.2.15 23-Dec-2015  skrll Transfer are only ever allocated from thread context now. Change IPL_USB
to IPL_NONE in pool_cache_init for the xfer struct pool.
 1.32.2.14 22-Oct-2015  skrll Use __diagused
 1.32.2.13 11-Oct-2015  skrll Update ubm_allocx with the isoc frame count parameter and use it in
dwctwo(4)
 1.32.2.12 04-Oct-2015  skrll Adapt to usbroothub and use usbroothub defaults for some requests
rather than returning an error.
 1.32.2.11 22-Sep-2015  skrll Sync with HEAD
 1.32.2.10 19-Mar-2015  skrll Do the same as OpenBSD and get rid of the *_handle typedefs and use
plain structures insteads
 1.32.2.9 04-Dec-2014  skrll Rework roothub control transfers so that much of the code is shared
across HCDs.

I have retained the vendor/product reporting for each HCD for now,
but it maybe get removed later.

ahci(4) now reports a language table and uses the usb_makestrdesc
function instead of rolling its own version.
 1.32.2.8 03-Dec-2014  skrll Rename usbroothub_subr.[ch] to usbroothub.[ch]
 1.32.2.7 03-Dec-2014  skrll Provide a USETWD macro for use with USB words designated
initialisers.
 1.32.2.6 03-Dec-2014  skrll The grand renaming of structure members.

No functional change.
 1.32.2.5 03-Dec-2014  skrll Remove dwc2_{alloc,free}m function declarations as these don't exist
anymore.
 1.32.2.4 03-Dec-2014  skrll Trailing whitespace.
 1.32.2.3 02-Dec-2014  skrll Step #1 of memory allocation re-organisation.

Centralised the buffer allocation routine which now supports DMA
and non-DMA capable host controllers. Remove the
ubm_{alloc,free}m methods from usbd_bus_methods.

The buffer allocation is only allowed in thread context and,
therefore, negates the usefulness of the reserve dma code which
is removed in this change.

USBD_NO_COPY is also no longer required as usbd_transfer and
usbd_transfer_complete now track buffer usage and handle any
copying.
 1.32.2.2 01-Dec-2014  skrll Add prefixes to method structures member names. No functional change.
 1.32.2.1 30-Nov-2014  skrll Whitespace
 1.43.2.1 07-Jan-2017  pgoyette Sync with HEAD. (Note that most of these changes are simply $NetBSD$
tag issues.)
 1.46.2.5 25-Feb-2020  martin Pull up following revision(s) (requested by skrll in ticket #1507):

sys/dev/usb/ohci.c: revision 1.296
sys/dev/usb/uhci.c: revision 1.294
sys/external/bsd/dwc2/dwc2.c: revision 1.72
sys/arch/mips/adm5120/dev/ahci.c: revision 1.21
sys/dev/usb/ehci.c: revision 1.274

Fix a memory leak. Spotted by nat@
 1.46.2.4 05-Dec-2019  bouyer Pull up following revision(s) (requested by skrll in ticket #1468):
sys/external/bsd/dwc2/dwc2.c: revision 1.60
sys/external/bsd/dwc2/dwc2.c: revision 1.61
sys/external/bsd/dwc2/dwc2.c: revision 1.62
sys/external/bsd/dwc2/dwc2.c: revision 1.63
sys/external/bsd/dwc2/dwc2.c: revision 1.64
sys/external/bsd/dwc2/dwc2.c: revision 1.65
sys/external/bsd/dwc2/dwc2.c: revision 1.66
KNF
Make dwc2debug sysctl'able
Need <sys/sysctl.h> for previous
Use size_t for loop count variable
Calulate the right lenght for isoc transfer and the usb_syncmem
PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+
build fix
Consistency.
 1.46.2.3 27-Sep-2018  martin Pull up following revision(s) (requested by mrg in ticket #1037):

sys/dev/usb/uhub.c: revision 1.139
sys/external/bsd/dwc2/dwc2.c: revision 1.55
sys/ddb/db_output.c: revision 1.34
sys/ddb/db_command.c: revision 1.160
sys/dev/usb/ehci.c: revision 1.264
sys/dev/usb/xhci.c: revision 1.99
sys/dev/usb/ehci.c: revision 1.265
sys/kern/subr_userconf.c: revision 1.27
sys/dev/usb/ehcivar.h: revision 1.46
sys/dev/usb/ohci.c: revision 1.287
sys/dev/usb/uhci.c: revision 1.284
sys/dev/usb/usbdi.c: revision 1.178
sys/dev/usb/usb.c: revision 1.172
sys/dev/pci/xhci_pci.c: revision 1.14
sys/dev/usb/usb.c: revision 1.173
sys/dev/usb/usb.c: revision 1.174
share/man/man4/usb.4: revision 1.110
sys/ddb/db_command.c: revision 1.159
sys/dev/usb/usb_subr.c: revision 1.227
sys/dev/usb/uhcivar.h: revision 1.56
(all via patch)

consolidate the handling of polling across HC drivers, and generic USB:
- don't take mutexes if polling
- normalise the code across all drivers
- add some not yet code to block discovery to/from polling
- minor CSE
- adjust comment for usbd_set_polling() to reality now i properly
understand what it is used for and why.

this, with a hack to make RB_ASKNAME to wait 5 seconds allows boot -a
work with USB keyboards. there are still multiple issues remaining:
- discovery and polling need to be mutually exclusive
- attachment of ukbd and wskbd is not handled by config_pending, and
the 5 second delay isn't going to always be enough.

call cnpollc(1) and cnpollc(0) around cngetc().
(christos has a good idea to add a function that does all 3,
and we should switch all the callers in this sequence to use
it (and fix the MD ones missing it still). not all can, as
eg, line-grabbing functions can use cngetsn(), which only
calls cnpollc() twice.)


When this file is used when not building the kernel (eg: /usr/sbin/crash)
make cnpollc() go away.


reorder some struct members to remove holes.


add config_pending usage to uhub and general USB device attachment.
- call config_pending_incr() and config_pending_decr() around attaching
devices against "usbdevif" attribute.

uhub:
- convert sc_explorepending and sc_running to bool. add new sc_first_explore.
- call config_pending_incr() at the start of uhub_attach(). dropped in
uhub_explore(), if this is the first explore.


implement a gross hack to fix "boot -a" on systems with usb keyboards on
systems with ehci handover to uhci (and maybe ohci), and fix a similar
problem for "boot -s".

there is effort to ensure that all devices attached via USB are probed
before RB_ASKNAME or RB_SINGLE attempts to ask any questions on the console,
and largely this works, often by chance, today, for USB disks and root.
i've recently pushed this more into uhub and general USB device attachment
as well, and kept a config_pending reference across the first explore of
a bus. these fix many issues with directly attached hubs.

however, on systems where devices connected to ehci ports are handed over
to a companion uhci or ohci port, it may not be the first, or even second,
bus explore that finds the device finally before attachment, and at this
point all config_pending references are dropped.

there is no direct communication between drivers, the potentials are
looked up but their device_t is only used for generic things like the name,
so informing the correct companion to expect a device and deal with the
config_pending references is not possible without some fairly ugly layer
violations or multi-level callbacks (eg, we have "ehci0", and usually an
the relevant companion, eg, "uhci2", but it is the uhub that uhci2 has
attached that will deal with the device attachment.)

with the above fixes to generic USB code, the disown happens during the
first explore. the hack works by, at this point, checking if (a) root
is not mounted, (b) single user or ask name are set, and (c) if the hack
as not been triggered already. if all 3 conditions are true, then a
config_pending_incr() is called and a callback is triggered for (default)
5 seconds to call config_pending_decr(). ehci detach pauses waiting for
this callback if scheduled.

this allows enough time for the uhub and the ukbd/wskbd to attach before
the RK_ASKROOT prompts appear. testing shows it takes between 1.5 and
2 seconds for the keyboard to appear after the disown occurs.

Index: dev/usb/ehcivar.c
- new sc_compcallout, sc_compcallout, sc_complock, and a state for th
handover hack.

Index: dev/usb/ehci.c
ehci_init():
- use aprint_normal_dev() instead of manual device_xname().
- initialise sc_compcallout, sc_compcallout, sc_complock, and sc_comp_state.
ehci_detach():
- if there are companion controllers, tear own the above, including waiting
if there is a callback scheduled.
ehci_disown_callback():
- new callout to call config_pending_decr() in the the future.
schedule this ca
ehci_disown_sched_callback():
- if booting to single user or asking names, call config_pending_incr() and
schedule the callout above, default 5 second delay.
ehci_disown():
- if disowning a port call ehci_disown_sched_callback().
deal with partial attach failures in usb_attach vs usb_detach aka PR 53598.
- make sure xhci's sc->sc_ios is NULL if failure happens.
- rearrange usb_attach() / usb_doattach() to make it simpler to clean up.
- move usb_async_intr softint into usb_once_init(). previously, each USB
controller would start a new one, and leave the old one leaked.
- handle controller interrupts without a bus attached


remove usb(4)'s "flags 1" code. it has been dead for a while,
as it runs during the interrupts part of configuration now,
and all the devices try attach as early as possible, including
any root or boot required disk or keyboard device, which is
what this flag was for.
 1.46.2.2 25-Aug-2018  martin Pull up following revision(s) (requested by mrg in ticket #980):

sys/dev/usb/usbdivar.h: revision 1.117
sys/external/bsd/dwc2/dwc2.c: revision 1.52
sys/dev/usb/xhcivar.h: revision 1.10
sys/dev/usb/motg.c: revision 1.22
sys/dev/usb/ehci.c: revision 1.260
sys/dev/usb/ehci.c: revision 1.261
sys/dev/usb/xhci.c: revision 1.96
sys/dev/usb/ohci.c: revision 1.282
sys/dev/usb/ohci.c: revision 1.283
sys/dev/usb/ehcivar.h: revision 1.45
sys/dev/usb/uhci.c: revision 1.281
sys/dev/usb/uhci.c: revision 1.282
sys/dev/usb/usbdi.c: revision 1.177
sys/dev/usb/ohcivar.h: revision 1.60
sys/dev/usb/uhcivar.h: revision 1.55
(all via patch)

pull across abort fixes from nick-nhusb. add more abort fixes, using
ideas from Taylor and Nick, and myself. special thanks to both who
inspired much of the code here, if not wrote it directly.
among other problems, this assert should no longer trigger:

panic: kernel diagnostic assertion "xfer->ux_state == XFER_ONQU" failed: file "/current/src/sys/dev/usb/usbdi.c", line 914

using usbhist i was able to track down my instance of it being related
to userland close() beginning, dropping the sc_lock, and then the usb
softintr completes the transfer normally, and when it is done, the
abort path attempts to re-complete the transfer, and the above assert
is tripped.

changes from nhusb were commited with these logs:
--
Move the struct usb_task to struct usbd_xfer for everyone to use.
--
Set device transfer status to USBD_IN_PROGRESS if start methods succeeds
--
Actually set the transfer status on transfers in ohci_abort_xfer and
the controller is dying
--
Don't supply the lock to callout_halt when polling as it won't be held
--
Improve transfer abort
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--
--
Mark device transfers as USBD_IN_PROGRESS appropriately and improve
abort handling
--

additional changes include:
- initialise the usb abort task in the HCI allocx routine, so that it
can be safely usb_rem_task()'d.
- rework the handling of softintr vs cancellation vs timeout abort based
upon a scheme from Taylor:
when completing a transfer normally:
- if the status is not in progress, it must be cancelled or timed out,
and we should not process this xfer.
- set the status as normal.
- unconditionallly callout_stop() and usb_rem_task(). they're safe and
either aren't running, or will run and do nothing.
- finally call usb_transfer_complete().
when aborting a transfer:
- status should be cancelled or timed out.
- if cancelling, callout_halt and usb_rem_task_wait() to make sure the
timer is either done or cancelled.
- at this point, the ux_status must not be cancelled or timed out, and
if it is not in progress we're done.
- set the status.
- if the controller is dying, just return.
- perform HCI-specific tasks to abort this xfer.
- finally call usb_transfer_complete().
for the timeout and timeout task:
- if the HCI is not dying, and the ux_status is in progress, then
trigger the usb abort task.
- remove UXFER_ABORTWAIT and UXFER_ABORTING.

tested on:
- multiple PC systems with several types of devices: ugen/UPS, ucom,
umass with disk, ssd and cdrom backends, kbd, ms, using uhci, ehci
and xhci.
- erlite3: sd@umass on dwc2.
- sunblade2000: kbd/ms and umass disk on ohci.

untested:
- motg, slhci and ahci. motg has some portion of the new scheme
applied, but slhci and ahci require more study.

future work includes pushing a lot of the common abort handling into
usbdi.c and leaving upm_abort() for HC specific tasks, but this change
is pullup-able to netbsd-7 and netbsd-8 as it does not change any
external API, as well as removing over 100 lines of code while adding
over 30 new asserts.

XXX: pullup-7, pullup-8.

fix DIAGNOSTIC build by not copying ub_usepolling to stack before use

Sprinkle __diagused
 1.46.2.1 23-Nov-2017  martin Pull up following revision(s) (requested by skrll in ticket #385):
sys/dev/usb/xhci.c: revision 1.77
sys/external/bsd/dwc2/dwc2.c: revision 1.47
sys/dev/usb/motg.c: revision 1.19
sys/dev/usb/ehci.c: revision 1.257
sys/dev/usb/ohci.c: revision 1.276
sys/dev/usb/uhci.c: revision 1.279

s/PR_NOWAIT/PR_WAITOK/ in HCD allocx (allocate xfer) method
 1.48.2.3 30-Sep-2018  pgoyette Ssync with HEAD
 1.48.2.2 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.48.2.1 16-Apr-2018  pgoyette Sync with HEAD, resolve some conflicts
 1.49.2.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.49.2.1 10-Jun-2019  christos Sync with HEAD
 1.59.4.4 23-Dec-2020  martin Pull up following revision(s) (requested by riastradh in ticket #1159):

sys/dev/usb/ohci.c: revision 1.314
sys/external/bsd/dwc2/dwc2.c: revision 1.75
sys/dev/usb/ehci.c: revision 1.284
sys/dev/usb/uhci.c: revision 1.305
sys/dev/usb/xhci.c: revision 1.136

usb: Omit bogus assertions about struct usbd_pipe::up_intrxfer.

These assertions were only valid for pipes at UE_IN_DIR, UE_INTERRUPT
endpoints created with usbd_open_pipe_intr, which uses up_intrxfer to
pass the struct usbd_xfer object to usbd_close_pipe to free later.

In contrast, for pipes at UE_OUT_DIR, UE_INTERRUPT endpoints,
up_intrxfer is never initialized, so the assertion cannot be right.
In principle we might even have more than one outstanding interrupt
transfer at a time, rendering the point of the assertion moot anyway.

Found by interrupting a uhidev write to a u2f device.

ok nick
 1.59.4.3 01-Mar-2020  martin Pull up following revision(s) (requested by riastradh in ticket #744):

sys/dev/usb/uhci.c: revision 1.292
sys/dev/usb/uhci.c: revision 1.293
sys/dev/usb/usbdi.h: revision 1.99
sys/dev/usb/motg.c: revision 1.26
sys/dev/usb/motg.c: revision 1.27
sys/dev/usb/motg.c: revision 1.28
sys/dev/usb/motg.c: revision 1.29
sys/external/bsd/dwc2/dwc2.c: revision 1.70
sys/external/bsd/dwc2/dwc2.c: revision 1.71
sys/dev/usb/usb.c: revision 1.181
sys/arch/mips/adm5120/dev/ahci.c: revision 1.20
sys/dev/usb/usb.c: revision 1.182
sys/dev/usb/xhci.c: revision 1.116
sys/dev/usb/xhci.c: revision 1.117
sys/dev/usb/xhci.c: revision 1.118
sys/dev/usb/uhci.c: revision 1.289
sys/dev/usb/usbdivar.h: revision 1.121
sys/dev/usb/usbdi.c: revision 1.190
sys/dev/usb/usbdivar.h: revision 1.122
sys/dev/usb/usbdi.c: revision 1.191
sys/dev/usb/usbdi.c: revision 1.192
sys/external/bsd/dwc2/dwc2var.h: revision 1.7
sys/dev/usb/motg.c: revision 1.30
sys/dev/usb/motg.c: revision 1.31
sys/dev/usb/motg.c: revision 1.32
sys/dev/usb/motg.c: revision 1.33
sys/external/bsd/dwc2/dwc2.c: revision 1.67
sys/external/bsd/dwc2/dwc2.c: revision 1.68
sys/dev/usb/ehci.c: revision 1.270
sys/external/bsd/dwc2/dwc2.c: revision 1.69
sys/dev/usb/usbdi.h: revision 1.100
sys/dev/usb/ehci.c: revision 1.271
sys/arch/mips/adm5120/dev/ahci.c: revision 1.18
sys/dev/usb/usbdi.h: revision 1.101
sys/dev/usb/ehci.c: revision 1.272
sys/dev/ic/sl811hs.c: revision 1.103
sys/arch/mips/adm5120/dev/ahci.c: revision 1.19
sys/dev/usb/ehci.c: revision 1.273
sys/dev/usb/ohci.c: revision 1.293
sys/dev/usb/uhci.c: revision 1.290
sys/dev/usb/ohci.c: revision 1.294
sys/dev/usb/uhci.c: revision 1.291
sys/dev/usb/ohci.c: revision 1.295

Teach usb_rem_task to return whether removed from queue or not.

New function usb_task_pending for diagnostic assertions.
Usable only for negative diagnostic assertions:

KASSERT(!usb_task_pending(dev, task))

If you can think of a better name for this than !usb_task_pending,
I'm all ears.

-

Nothing guarantees xfer's timeout has completed.

Wait for it when we free the xfer.

-


New xfer state variables ux_timeout_set and ux_timeout_reset.

These are needed because:
- The host controller interrupt cannot wait for the callout or task
to finish running.
- Nothing in the USBD API as is waits for the callout or task to
finish running.
- Callers expect to be able to resubmit USB xfers from xfer callbacks
without waiting for anything to finish running.

The variable ux_timeout_set can be used by a host controller to
decide on submission whether to schedule the callout or to ask an
already-scheduled callout or already-queued task to reschedule the
callout, by setting the variable ux_timeout_reset to true.

When the callout or task runs and sees that ux_timeout_reset is true,
rather than queue the task or abort the xfer, it can instead just
schedule the callout anew.

-

Fix steady state of timeouts in ehci.

This is complicated because:
1. There are three ways that an xfer can be completed:
(a) hardware interrupt completes xfer
(b) software decision aborts xfer with USBD_CANCELLED
(c) timeout aborts xfer with USBD_TIMEOUT
2. The timeout abort can't be done in callout because ehci_sync_hc,
called unconditionally by ehci_abort_xfer to wait until the device
has finished using any references to the xfer, may sleep. So we
have to schedule a callout that, when run, will schedule a usb_task.
3. The hardware completion interrupt can't sleep waiting for a callout
or task to finish -- can't use callout_halt or usb_rem_task_wait.
So the callout and usb_task must be able to run _after_ the hardware
completion interrupt, and recognize that they're late to the party.
(Note, though, that usbd_free_xfer does wait for the callout and
task to complete, so there's no danger they may use themselves after
free.)
4. The xfer may resubmitted -- and the timeout may be rescheduled --
immediately after the hardware completion interrupt, _while_ the
callout and/or usb_task may still be scheduled. Specifically, we
may have the following sequence of events:
(a) hardware completion interrupt
(b) callout or usb_task fires
(c) driver resubmits xfer
(d) callout or usb_task acquires lock and looks around dazed and
bewildered at the firehose of events like reading the news in 2019

The mechanism for sorting this out is that we have two bits of state:
- xfer->ux_timeout_set informs the driver, when submitting an xfer and
setting up its timeout, whether either the callout or usb_task is
already scheduled or not.
- xfer->ux_timeout_reset informs the callout or usb_task whether it
should reschedule the callout, because the xfer got resubmitted, or
not.

-

Factor out HCI-independent xfer completion logic.

New API for HCI drivers to synchronize hardware completion
interrupts, synchronous aborts, and asynchronous timeouts:
- When submitting an xfer to hardware, call
usbd_xfer_schedule_timeout(xfer).
- On HCI completion interrupt for xfer completion:
if (!usbd_xfer_trycomplete(xfer))
return; /* timed out or aborted, ignore it */
- In upm_abort methods, call usbd_xfer_abort(xfer).

For HCI drivers that use this API (not needed in drivers that don't,
or for xfers like root intr xfers that don't use it):
- New ubm_abortx method serves role of former *hci_abort_xfer, but
without any logic for wrangling timeouts/callouts/tasks -- caller
in usbd_xfer_abort has already handled them.
- New ubm_dying method, returns true if the device is in the process
of detaching, used by the timeout logic.

Converted and tested:
- ehci
- ohci

Converted and compile-tested:
- ahci (XXX did this ever work?)
- dwc2
- motg (XXX missing usbd_xfer_schedule_timeout in motg_*_start?)
- uhci
- xhci

Not changed:
- slhci (sys/dev/ic/sl811hs.c) -- doesn't use a separate per-xfer
callout for timeouts (XXX but maybe should?)
- ugenhc (sys/rump/dev/lib/libugenhc/ugenhc.c) -- doesn't manage its
own transfer timeouts

-

Fix steady state of root intr xfers.

Why?
- Avoid completing a root intr xfer multiple times in races.
- Avoid potential use-after-free in poll_hub callouts (uhci, ahci).

How?
- Use sc->sc_intr_xfer or equivalent to store only a pending xfer
that has not yet completed -- whether successfully, by timeout, or
by synchronous abort. When any of those happens, set it to null
under the lock, so the xfer is completed only once.
- For hci drivers that use a callout to poll the root hub (uhci, ahci):
. Pass the softc pointer, not the xfer, to the callout, so the
callout is not even tempted to use xfer after free -- if the
callout fires, but the xfer is synchronously aborted before the
callout can do anything, the xfer might be freed by the time the
callout starts to examine it.
. Teach the callout to do nothing if it is callout_pending after it
has fired. This way:
1. completion or synchronous abort can just callout_stop
2. start can just callout_schedule
If the callout had already fired before (1), and doesn't acquire
the bus lock until after (2), it may be tempted to abort the new
root intr xfer just after submission, which would be wrong -- so
instead we just have the callout do nothing if it notices it has
been rescheduled, since it will fire again after the appropriate
time has elapsed.

-

Initialize xfer->ux_status in uhci_root_intr_start.

Otherwise, it will be USBD_NOT_STARTED, so usbd_ar_pipe will skip
calling upm_abort.
Candidate fix for PR kern/54963, same problem as reported at:
href="https://mail-index.NetBSD.org/current-users/2020/02/13/msg037740.html

-

Set ux_isdone in uhci_poll_hub for DIAGNOSTIC.

-

Fix mistakes in previous sloppy change with root intr xfers.
- Make sure ux_status is set to USBD_IN_PROGRESS when started.
Otherwise, if it is still in flight when we abort the pipe,
usbd_ar_pipe will skip calling upm_abort.
- Initialize ux_status under the lock; in principle a completion
interrupt (or a delay) could race with the initialization.
- KASSERT that the xfer is in progress when we're about to complete
it.

Candidate fix for PR kern/54963 for other HCI drivers than uhci.
ok nick
ok phone
(This is the change that nick evidently MEANT to ok when he ok'd the
previous one!)

-

Fix build

-

Fix non-DIAGNOSTIC builds.

-

Fix wrong KASSERT in motg abort.
This has been wrong since last summer when we did the transition to
xfer->ux_status = USBD_CANCELLED earlier.
XXX pullup-9

-

Fix mistakes in timeout/abort/completion changes in motg(4).
- Call usbd_xfer_schedule_timeout so we actually do time out.
- Don't call usbd_xfer_trycomplete until all the data have been
transferred -- it commits to completion, not timeout.
- Use xfer->ux_status != USBD_IN_PROGRESS to test whether, after a
partial write, an xfer has been interrupted or timed out and need
not be continued.
- Remove wrong assertion.

-

Fix mistake in use of usbd_xfer_schedule_timeout in motg.

This code path is used both for xfers that are new, and xfers that
are being done piece by piece and are partway done. For the latter
case, skip usbd_xfer_schedule_timeout so we schedule it only once per
xfer.

-

Simplify some branches and kassert some redundant assignments.
 1.59.4.2 25-Feb-2020  martin Pull up following revision(s) (requested by skrll in ticket #718):

sys/dev/usb/ohci.c: revision 1.296
sys/dev/usb/uhci.c: revision 1.294
sys/external/bsd/dwc2/dwc2.c: revision 1.72
sys/arch/mips/adm5120/dev/ahci.c: revision 1.21
sys/dev/usb/ehci.c: revision 1.274

Fix a memory leak. Spotted by nat@
 1.59.4.1 09-Dec-2019  martin Pull up following revision(s) (requested by skrll in ticket #524):

sys/external/bsd/dwc2/dwc2.c: revision 1.60
sys/external/bsd/dwc2/dwc2.c: revision 1.61
sys/external/bsd/dwc2/dwc2.c: revision 1.62
sys/external/bsd/dwc2/dwc2.c: revision 1.63
sys/external/bsd/dwc2/dwc2.c: revision 1.64
sys/external/bsd/dwc2/dwc2.c: revision 1.65
sys/external/bsd/dwc2/dwc2.c: revision 1.66

KNF

Make dwc2debug sysctl'able

Need <sys/sysctl.h> for previous

Use size_t for loop count variable

Calulate the right lenght for isoc transfer and the usb_syncmem

PR/54696: Kernel panic in bus_dma.c on Raspberry Pi 3B/3B+

build fix

Consistency.
 1.66.2.1 29-Feb-2020  ad Sync with head.
 1.74.2.2 03-Apr-2021  thorpej Sync with HEAD.
 1.74.2.1 03-Jan-2021  thorpej Sync w/ HEAD.
 1.12 18-Mar-2022  riastradh dwc2: Use getticks(), not hardclock_ticks.
 1.11 19-Dec-2021  riastradh Get drm to build on arm64 again.


Author: Jared McNeill <jmcneill@NetBSD.org>
Committer: Taylor R Campbell <riastradh@NetBSD.org>
 1.10 27-Aug-2018  riastradh Fix fallout from linux/gfp.h -> common.
 1.9 24-Feb-2016  skrll branches: 1.9.16; 1.9.18;
Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.8 19-Feb-2016  skrll In msleep use udelay if cold or sleep is small enough. This is mostly
copied from the drm2 version.
 1.7 30-Aug-2015  skrll Update for latest dwc2
 1.6 30-Aug-2015  skrll KNF
 1.5 30-Jul-2015  skrll Use IPL_VM for dwc2_intr and mark as MP safe where possible.
 1.4 23-Dec-2014  macallan #include "opt_usb.h"
 1.3 02-Sep-2014  skrll branches: 1.3.2;
Use IPL_SCHED for dwctwo(4) - no need for the KERNEL_LOCK.
 1.2 01-Nov-2013  skrll branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10; 1.2.14;
Don't always define DWC2_DEBUG
 1.1 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.2.14.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.2.10.3 03-Dec-2017  jdolecek update from HEAD
 1.2.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.2.10.1 01-Nov-2013  tls file dwc2.h was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.2.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.2.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.2.6.1 01-Nov-2013  yamt file dwc2.h was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.2.4.2 18-May-2014  rmind sync with head
 1.2.4.1 01-Nov-2013  rmind file dwc2.h was added on branch rmind-smpnet on 2014-05-18 17:46:01 +0000
 1.3.2.3 19-Mar-2016  skrll Sync with HEAD
 1.3.2.2 22-Sep-2015  skrll Sync with HEAD
 1.3.2.1 06-Apr-2015  skrll Sync with HEAD
 1.9.18.1 10-Jun-2019  christos Sync with HEAD
 1.9.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.7 12-Feb-2020  riastradh Factor out HCI-independent xfer completion logic.

New API for HCI drivers to synchronize hardware completion
interrupts, synchronous aborts, and asynchronous timeouts:

- When submitting an xfer to hardware, call
usbd_xfer_schedule_timeout(xfer).

- On HCI completion interrupt for xfer completion:

if (!usbd_xfer_trycomplete(xfer))
return; /* timed out or aborted, ignore it */

- In upm_abort methods, call usbd_xfer_abort(xfer).

For HCI drivers that use this API (not needed in drivers that don't,
or for xfers like root intr xfers that don't use it):

- New ubm_abortx method serves role of former *hci_abort_xfer, but
without any logic for wrangling timeouts/callouts/tasks -- caller
in usbd_xfer_abort has already handled them.

- New ubm_dying method, returns true if the device is in the process
of detaching, used by the timeout logic.

Converted and tested:
- ehci
- ohci

Converted and compile-tested:
- ahci (XXX did this ever work?)
- dwc2
- motg (XXX missing usbd_xfer_schedule_timeout in motg_*_start?)
- uhci
- xhci

Not changed:

- slhci (sys/dev/ic/sl811hs.c) -- doesn't use a separate per-xfer
callout for timeouts (XXX but maybe should?)

- ugenhc (sys/rump/dev/lib/libugenhc/ugenhc.c) -- doesn't manage its
own transfer timeouts

- vhci -- times transfers out only on detach; could be adapted easily
if we wanted to use the xfer->ux_callout
 1.6 18-Nov-2018  skrll branches: 1.6.4; 1.6.6;
Remove unused struct member (usbd_xfer now has a struct usb_task)
 1.5 23-Apr-2016  skrll branches: 1.5.16; 1.5.18;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
 1.4 01-May-2015  hikaru Support external DMA mode and provide an interface for DMA address configuration
 1.3 22-Oct-2013  skrll branches: 1.3.4; 1.3.6; 1.3.8; 1.3.10; 1.3.12; 1.3.16;
Remove unused usbd_xfer_handle from dwc2_pipe. (missed commit)
 1.2 27-Sep-2013  skrll Use the hsotg->lock spin lock solely
 1.1 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.3.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.3.12.11 30-Apr-2016  skrll Move the struct usb_task to struct usbd_xfer for everyone to use.
 1.3.12.10 05-Mar-2016  skrll Whitespace
 1.3.12.9 01-Mar-2016  skrll Remove unused struct member.
 1.3.12.8 26-Feb-2016  skrll Whitespace
 1.3.12.7 22-Oct-2015  skrll Simplify *_XFER2SC using ux_bus
 1.3.12.6 11-Oct-2015  skrll Update ubm_allocx with the isoc frame count parameter and use it in
dwctwo(4)
 1.3.12.5 06-Jun-2015  skrll Sync with HEAD
 1.3.12.4 19-Mar-2015  skrll Do the same as OpenBSD and get rid of the *_handle typedefs and use
plain structures insteads
 1.3.12.3 04-Dec-2014  skrll Rework roothub control transfers so that much of the code is shared
across HCDs.

I have retained the vendor/product reporting for each HCD for now,
but it maybe get removed later.

ahci(4) now reports a language table and uses the usb_makestrdesc
function instead of rolling its own version.
 1.3.12.2 03-Dec-2014  skrll The grand renaming of structure members.

No functional change.
 1.3.12.1 02-Dec-2014  skrll Step #1 of memory allocation re-organisation.

Centralised the buffer allocation routine which now supports DMA
and non-DMA capable host controllers. Remove the
ubm_{alloc,free}m methods from usbd_bus_methods.

The buffer allocation is only allowed in thread context and,
therefore, negates the usefulness of the reserve dma code which
is removed in this change.

USBD_NO_COPY is also no longer required as usbd_transfer and
usbd_transfer_complete now track buffer usage and handle any
copying.
 1.3.10.3 03-Dec-2017  jdolecek update from HEAD
 1.3.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.3.10.1 22-Oct-2013  tls file dwc2var.h was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.3.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.3.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.3.6.1 22-Oct-2013  yamt file dwc2var.h was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.3.4.2 18-May-2014  rmind sync with head
 1.3.4.1 22-Oct-2013  rmind file dwc2var.h was added on branch rmind-smpnet on 2014-05-18 17:46:01 +0000
 1.5.18.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.5.18.1 10-Jun-2019  christos Sync with HEAD
 1.5.16.1 26-Nov-2018  pgoyette Sync with HEAD, resolve a couple of conflicts
 1.6.6.1 29-Feb-2020  ad Sync with head.
 1.6.4.1 01-Mar-2020  martin Pull up following revision(s) (requested by riastradh in ticket #744):

sys/dev/usb/uhci.c: revision 1.292
sys/dev/usb/uhci.c: revision 1.293
sys/dev/usb/usbdi.h: revision 1.99
sys/dev/usb/motg.c: revision 1.26
sys/dev/usb/motg.c: revision 1.27
sys/dev/usb/motg.c: revision 1.28
sys/dev/usb/motg.c: revision 1.29
sys/external/bsd/dwc2/dwc2.c: revision 1.70
sys/external/bsd/dwc2/dwc2.c: revision 1.71
sys/dev/usb/usb.c: revision 1.181
sys/arch/mips/adm5120/dev/ahci.c: revision 1.20
sys/dev/usb/usb.c: revision 1.182
sys/dev/usb/xhci.c: revision 1.116
sys/dev/usb/xhci.c: revision 1.117
sys/dev/usb/xhci.c: revision 1.118
sys/dev/usb/uhci.c: revision 1.289
sys/dev/usb/usbdivar.h: revision 1.121
sys/dev/usb/usbdi.c: revision 1.190
sys/dev/usb/usbdivar.h: revision 1.122
sys/dev/usb/usbdi.c: revision 1.191
sys/dev/usb/usbdi.c: revision 1.192
sys/external/bsd/dwc2/dwc2var.h: revision 1.7
sys/dev/usb/motg.c: revision 1.30
sys/dev/usb/motg.c: revision 1.31
sys/dev/usb/motg.c: revision 1.32
sys/dev/usb/motg.c: revision 1.33
sys/external/bsd/dwc2/dwc2.c: revision 1.67
sys/external/bsd/dwc2/dwc2.c: revision 1.68
sys/dev/usb/ehci.c: revision 1.270
sys/external/bsd/dwc2/dwc2.c: revision 1.69
sys/dev/usb/usbdi.h: revision 1.100
sys/dev/usb/ehci.c: revision 1.271
sys/arch/mips/adm5120/dev/ahci.c: revision 1.18
sys/dev/usb/usbdi.h: revision 1.101
sys/dev/usb/ehci.c: revision 1.272
sys/dev/ic/sl811hs.c: revision 1.103
sys/arch/mips/adm5120/dev/ahci.c: revision 1.19
sys/dev/usb/ehci.c: revision 1.273
sys/dev/usb/ohci.c: revision 1.293
sys/dev/usb/uhci.c: revision 1.290
sys/dev/usb/ohci.c: revision 1.294
sys/dev/usb/uhci.c: revision 1.291
sys/dev/usb/ohci.c: revision 1.295

Teach usb_rem_task to return whether removed from queue or not.

New function usb_task_pending for diagnostic assertions.
Usable only for negative diagnostic assertions:

KASSERT(!usb_task_pending(dev, task))

If you can think of a better name for this than !usb_task_pending,
I'm all ears.

-

Nothing guarantees xfer's timeout has completed.

Wait for it when we free the xfer.

-


New xfer state variables ux_timeout_set and ux_timeout_reset.

These are needed because:
- The host controller interrupt cannot wait for the callout or task
to finish running.
- Nothing in the USBD API as is waits for the callout or task to
finish running.
- Callers expect to be able to resubmit USB xfers from xfer callbacks
without waiting for anything to finish running.

The variable ux_timeout_set can be used by a host controller to
decide on submission whether to schedule the callout or to ask an
already-scheduled callout or already-queued task to reschedule the
callout, by setting the variable ux_timeout_reset to true.

When the callout or task runs and sees that ux_timeout_reset is true,
rather than queue the task or abort the xfer, it can instead just
schedule the callout anew.

-

Fix steady state of timeouts in ehci.

This is complicated because:
1. There are three ways that an xfer can be completed:
(a) hardware interrupt completes xfer
(b) software decision aborts xfer with USBD_CANCELLED
(c) timeout aborts xfer with USBD_TIMEOUT
2. The timeout abort can't be done in callout because ehci_sync_hc,
called unconditionally by ehci_abort_xfer to wait until the device
has finished using any references to the xfer, may sleep. So we
have to schedule a callout that, when run, will schedule a usb_task.
3. The hardware completion interrupt can't sleep waiting for a callout
or task to finish -- can't use callout_halt or usb_rem_task_wait.
So the callout and usb_task must be able to run _after_ the hardware
completion interrupt, and recognize that they're late to the party.
(Note, though, that usbd_free_xfer does wait for the callout and
task to complete, so there's no danger they may use themselves after
free.)
4. The xfer may resubmitted -- and the timeout may be rescheduled --
immediately after the hardware completion interrupt, _while_ the
callout and/or usb_task may still be scheduled. Specifically, we
may have the following sequence of events:
(a) hardware completion interrupt
(b) callout or usb_task fires
(c) driver resubmits xfer
(d) callout or usb_task acquires lock and looks around dazed and
bewildered at the firehose of events like reading the news in 2019

The mechanism for sorting this out is that we have two bits of state:
- xfer->ux_timeout_set informs the driver, when submitting an xfer and
setting up its timeout, whether either the callout or usb_task is
already scheduled or not.
- xfer->ux_timeout_reset informs the callout or usb_task whether it
should reschedule the callout, because the xfer got resubmitted, or
not.

-

Factor out HCI-independent xfer completion logic.

New API for HCI drivers to synchronize hardware completion
interrupts, synchronous aborts, and asynchronous timeouts:
- When submitting an xfer to hardware, call
usbd_xfer_schedule_timeout(xfer).
- On HCI completion interrupt for xfer completion:
if (!usbd_xfer_trycomplete(xfer))
return; /* timed out or aborted, ignore it */
- In upm_abort methods, call usbd_xfer_abort(xfer).

For HCI drivers that use this API (not needed in drivers that don't,
or for xfers like root intr xfers that don't use it):
- New ubm_abortx method serves role of former *hci_abort_xfer, but
without any logic for wrangling timeouts/callouts/tasks -- caller
in usbd_xfer_abort has already handled them.
- New ubm_dying method, returns true if the device is in the process
of detaching, used by the timeout logic.

Converted and tested:
- ehci
- ohci

Converted and compile-tested:
- ahci (XXX did this ever work?)
- dwc2
- motg (XXX missing usbd_xfer_schedule_timeout in motg_*_start?)
- uhci
- xhci

Not changed:
- slhci (sys/dev/ic/sl811hs.c) -- doesn't use a separate per-xfer
callout for timeouts (XXX but maybe should?)
- ugenhc (sys/rump/dev/lib/libugenhc/ugenhc.c) -- doesn't manage its
own transfer timeouts

-

Fix steady state of root intr xfers.

Why?
- Avoid completing a root intr xfer multiple times in races.
- Avoid potential use-after-free in poll_hub callouts (uhci, ahci).

How?
- Use sc->sc_intr_xfer or equivalent to store only a pending xfer
that has not yet completed -- whether successfully, by timeout, or
by synchronous abort. When any of those happens, set it to null
under the lock, so the xfer is completed only once.
- For hci drivers that use a callout to poll the root hub (uhci, ahci):
. Pass the softc pointer, not the xfer, to the callout, so the
callout is not even tempted to use xfer after free -- if the
callout fires, but the xfer is synchronously aborted before the
callout can do anything, the xfer might be freed by the time the
callout starts to examine it.
. Teach the callout to do nothing if it is callout_pending after it
has fired. This way:
1. completion or synchronous abort can just callout_stop
2. start can just callout_schedule
If the callout had already fired before (1), and doesn't acquire
the bus lock until after (2), it may be tempted to abort the new
root intr xfer just after submission, which would be wrong -- so
instead we just have the callout do nothing if it notices it has
been rescheduled, since it will fire again after the appropriate
time has elapsed.

-

Initialize xfer->ux_status in uhci_root_intr_start.

Otherwise, it will be USBD_NOT_STARTED, so usbd_ar_pipe will skip
calling upm_abort.
Candidate fix for PR kern/54963, same problem as reported at:
href="https://mail-index.NetBSD.org/current-users/2020/02/13/msg037740.html

-

Set ux_isdone in uhci_poll_hub for DIAGNOSTIC.

-

Fix mistakes in previous sloppy change with root intr xfers.
- Make sure ux_status is set to USBD_IN_PROGRESS when started.
Otherwise, if it is still in flight when we abort the pipe,
usbd_ar_pipe will skip calling upm_abort.
- Initialize ux_status under the lock; in principle a completion
interrupt (or a delay) could race with the initialization.
- KASSERT that the xfer is in progress when we're about to complete
it.

Candidate fix for PR kern/54963 for other HCI drivers than uhci.
ok nick
ok phone
(This is the change that nick evidently MEANT to ok when he ok'd the
previous one!)

-

Fix build

-

Fix non-DIAGNOSTIC builds.

-

Fix wrong KASSERT in motg abort.
This has been wrong since last summer when we did the transition to
xfer->ux_status = USBD_CANCELLED earlier.
XXX pullup-9

-

Fix mistakes in timeout/abort/completion changes in motg(4).
- Call usbd_xfer_schedule_timeout so we actually do time out.
- Don't call usbd_xfer_trycomplete until all the data have been
transferred -- it commits to completion, not timeout.
- Use xfer->ux_status != USBD_IN_PROGRESS to test whether, after a
partial write, an xfer has been interrupted or timed out and need
not be continued.
- Remove wrong assertion.

-

Fix mistake in use of usbd_xfer_schedule_timeout in motg.

This code path is used both for xfers that are new, and xfers that
are being done piece by piece and are partway done. For the latter
case, skip usbd_xfer_schedule_timeout so we schedule it only once per
xfer.

-

Simplify some branches and kassert some redundant assignments.
 1.4 30-Aug-2015  skrll Note where we're tracking dwc2 from now.
 1.3 03-Apr-2014  skrll branches: 1.3.4; 1.3.6; 1.3.8; 1.3.10; 1.3.12; 1.3.16;
New dwc2 location - it moved out of staging.
 1.2 05-Oct-2013  skrll Better instructions
 1.1 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.3.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.3.12.1 22-Sep-2015  skrll Sync with HEAD
 1.3.10.3 03-Dec-2017  jdolecek update from HEAD
 1.3.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.3.10.1 03-Apr-2014  tls file dwctwo2netbsd was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.3.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.3.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.3.6.1 03-Apr-2014  yamt file dwctwo2netbsd was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.3.4.2 18-May-2014  rmind sync with head
 1.3.4.1 03-Apr-2014  rmind file dwctwo2netbsd was added on branch rmind-smpnet on 2014-05-18 17:46:01 +0000
 1.4 20-Dec-2021  simonb Explicitly use -I$S/external/bsd/dwc2/dist for dwc2 instead of possibly
getting that include path via DRM. Fixes evbmips cavium kernel build.
 1.3 24-Feb-2016  skrll Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.2 12-Sep-2014  skrll branches: 1.2.2;
Improve USB debugging with USBHIST based on KERNHIST.

Convert some DPRINTFs to USBHIST_LOG and allow usbdebug, ehcidebug and
umassdebug to be changed via sysctl.

Remove the #define mess in usb.h.

This was started by mrg@ and updated by reinoud@
 1.1 05-Sep-2013  skrll branches: 1.1.4; 1.1.6; 1.1.8; 1.1.10; 1.1.14;
Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1.14.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.1.10.3 03-Dec-2017  jdolecek update from HEAD
 1.1.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.1.10.1 05-Sep-2013  tls file files.dwc2 was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.1.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.1.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.1.6.1 05-Sep-2013  yamt file files.dwc2 was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.1.4.2 18-May-2014  rmind sync with head
 1.1.4.1 05-Sep-2013  rmind file files.dwc2 was added on branch rmind-smpnet on 2014-05-18 17:46:01 +0000
 1.2.2.1 19-Mar-2016  skrll Sync with HEAD
 1.14 12-Apr-2025  mlelstv From upstream, fixes issues with isochronous transfers.
 1.13 24-Feb-2016  skrll branches: 1.13.54;
Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.12 24-Feb-2016  skrll Trailing whitespace
 1.11 14-Feb-2016  skrll Merge conflicts
 1.10 01-Sep-2015  skrll kern/50185: dwctwo attach failure

Another hunk went walkabout during the import - reapply with a little
update
 1.9 01-Sep-2015  skrll Re-apply hunk that got lost in the recent import. CVS is fun!
 1.8 30-Aug-2015  skrll Merge conflicts
 1.7 01-May-2015  hikaru Support external DMA mode and provide an interface for DMA address configuration
 1.6 03-Apr-2014  skrll branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10; 1.6.12; 1.6.16;
Merge conflicts.
 1.5 21-Mar-2014  skrll Fix non-USB_DEBUG (and non-DWC2_DEBUG) build
 1.4 05-Oct-2013  skrll Merge conflicts.
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.6 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.5 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.4 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.6.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.6.12.3 19-Mar-2016  skrll Sync with HEAD
 1.6.12.2 22-Sep-2015  skrll Sync with HEAD
 1.6.12.1 06-Jun-2015  skrll Sync with HEAD
 1.6.10.3 03-Dec-2017  jdolecek update from HEAD
 1.6.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.6.10.1 03-Apr-2014  tls file dwc2_core.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.6.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.6.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.6.6.1 03-Apr-2014  yamt file dwc2_core.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.6.4.2 18-May-2014  rmind sync with head
 1.6.4.1 03-Apr-2014  rmind file dwc2_core.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.13.54.1 02-Aug-2025  perseant Sync with HEAD
 1.9 08-Aug-2018  simonb Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.8 24-Feb-2016  skrll branches: 1.8.10; 1.8.16; 1.8.18;
Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.7 14-Feb-2016  skrll Merge conflicts
 1.6 30-Aug-2015  skrll Merge conflicts
 1.5 03-Apr-2014  skrll branches: 1.5.4; 1.5.6; 1.5.8; 1.5.10; 1.5.12; 1.5.16;
Merge conflicts.
 1.4 05-Oct-2013  skrll Merge conflicts.
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.6 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.5 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.4 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.5.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.5.12.2 19-Mar-2016  skrll Sync with HEAD
 1.5.12.1 22-Sep-2015  skrll Sync with HEAD
 1.5.10.3 03-Dec-2017  jdolecek update from HEAD
 1.5.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.5.10.1 03-Apr-2014  tls file dwc2_core.h was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.5.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.5.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.5.6.1 03-Apr-2014  yamt file dwc2_core.h was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.5.4.2 18-May-2014  rmind sync with head
 1.5.4.1 03-Apr-2014  rmind file dwc2_core.h was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.8.18.1 10-Jun-2019  christos Sync with HEAD
 1.8.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.8.10.1 08-Aug-2018  martin Pull up following revision(s) (requested by simonb in ticket #966):

sys/external/bsd/dwc2/dist/dwc2_core.h: revision 1.9
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.21

Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.11 24-Feb-2016  skrll Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.10 14-Feb-2016  skrll Merge conflicts
 1.9 30-Aug-2015  skrll Merge conflicts
 1.8 04-Apr-2014  skrll branches: 1.8.4; 1.8.6; 1.8.8; 1.8.10; 1.8.12; 1.8.16;
Fix non-DWC2_DEBUG build.
 1.7 03-Apr-2014  skrll Merge conflicts.
 1.6 21-Mar-2014  skrll Fix non-USB_DEBUG (and non-DWC2_DEBUG) build
 1.5 05-Oct-2013  skrll Merge conflicts.
 1.4 27-Sep-2013  skrll Use the hsotg->lock spin lock solely
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.5 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.4 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.3 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.8.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.8.12.2 19-Mar-2016  skrll Sync with HEAD
 1.8.12.1 22-Sep-2015  skrll Sync with HEAD
 1.8.10.3 03-Dec-2017  jdolecek update from HEAD
 1.8.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.8.10.1 04-Apr-2014  tls file dwc2_coreintr.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.8.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.8.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.8.6.1 04-Apr-2014  yamt file dwc2_coreintr.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.8.4.2 18-May-2014  rmind sync with head
 1.8.4.1 04-Apr-2014  rmind file dwc2_coreintr.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.26 21-Dec-2021  skrll Change the usb_mem API to take a bus_dma_tag_t in usb_allocmem instead of
a struct usbd_bus *.

This allows an HCD to use more than one tag.
 1.25 11-Jan-2021  skrll Tidy up more error handling confusion
 1.24 05-Apr-2020  skrll branches: 1.24.4;
Switch USB to use non-coherent buffers for data transfers in the
same way as OpenBSD.

The use of coherent (uncacheable on ARM and other arches) mappings
for transfer buffers impacts performance, espcially where memcpys
are involved.

Audit the necessary usb_syncmem operations - a few were missing.
 1.23 14-Jul-2019  mlelstv Fix error path, kmem_free doesn't allow NULL pointers.
Fix compilation with CONFIG_USB_DWC2_TRACK_MISSED_SOFS.
 1.22 27-Aug-2018  riastradh Fix fallout from linux/gfp.h -> common.
 1.21 08-Aug-2018  simonb Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.20 01-Aug-2018  skrll Fix the alignment argument to usb_allocmem in dwc2_hc_setup_align_buf
 1.19 24-Feb-2016  skrll branches: 1.19.10; 1.19.16; 1.19.18;
Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.18 14-Feb-2016  skrll Merge conflicts
 1.17 22-Dec-2015  skrll Report an error when return -ENODEV for the unsupported setup.
 1.16 30-Aug-2015  skrll Merge conflicts
 1.15 24-Nov-2014  skrll branches: 1.15.2;
Simplify the NAK holdoff change.
 1.14 03-Sep-2014  skrll Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.

Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.13 03-Jul-2014  skrll branches: 1.13.2; 1.13.4;
Trailing whitespace.
 1.12 03-Apr-2014  skrll branches: 1.12.2; 1.12.4; 1.12.6;
Merge conflicts.
 1.11 21-Mar-2014  skrll Fix non-USB_DEBUG (and non-DWC2_DEBUG) build
 1.10 02-Jan-2014  skrll Protect access of urb->hcpriv by adapting the following change from the
Raspberry PI dwc_otg driver.

https://github.com/raspberrypi/linux/commit/38753ce72d4f10d5d0f1ed27fa691a2ba8910941

dwc_otg: prevent OOPSes during device disconnects

The dwc_otg_urb_enqueue function is thread-unsafe. In particular the
access of urb->hcpriv, usb_hcd_link_urb_to_ep, dwc_otg_urb->qtd and
friends does not occur within a critical section and so if a device
was unplugged during activity there was a high chance that the
usbcore hub_thread would try to disable the endpoint with partially-
formed entries in the URB queue. This would result in BUG() or null
pointer dereferences.

Fix so that access of urb->hcpriv, enqueuing to the hardware and
adding to usbcore endpoint URB lists is contained within a single
critical section.
 1.9 24-Nov-2013  skrll Resolve conflicts.
 1.8 14-Nov-2013  skrll Simplify variable assignment and avoid gcc warnings.
 1.7 22-Oct-2013  skrll Be strictly correct about chan->xfer_dma assignment and avoid calling
DMAADDR on fully transfered data phase of a control transfer.

Without this change the KASSERT(offset < dma->block->size) in usb_dmaaddr
would fire.

Found by anon when testing athn(4).
 1.6 05-Oct-2013  skrll Merge conflicts.
 1.5 02-Oct-2013  skrll Some core configurations cannot support LS traffic on a FS root port.

Fix adapted from the github.com/raspberrypi driver.
 1.4 27-Sep-2013  skrll Tidyup dwc2_host_is_b_hnp_enabled
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.7 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.6 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.5 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.4 24-Nov-2013  skrll Import dwc2 2013-11-24
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.12.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.12.6.1 03-Apr-2014  yamt file dwc2_hcd.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.12.4.2 18-May-2014  rmind sync with head
 1.12.4.1 03-Apr-2014  rmind file dwc2_hcd.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.12.2.1 10-Aug-2014  tls Rebase.
 1.13.4.3 03-Dec-2017  jdolecek update from HEAD
 1.13.4.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.13.4.1 03-Jul-2014  tls file dwc2_hcd.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.13.2.2 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.13.2.1 08-Sep-2014  msaitoh branches: 1.13.2.1.4;
Pull up following revision(s) (requested by skrll in ticket #75):
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.11
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.10
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.9
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.
Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.13.2.1.4.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.15.2.4 19-Mar-2016  skrll Sync with HEAD
 1.15.2.3 27-Dec-2015  skrll Sync with HEAD (as of 26th Dec)
 1.15.2.2 22-Sep-2015  skrll Sync with HEAD
 1.15.2.1 19-Mar-2015  skrll Do the same as OpenBSD and get rid of the *_handle typedefs and use
plain structures insteads
 1.19.18.3 13-Apr-2020  martin Mostly merge changes from HEAD upto 20200411
 1.19.18.2 08-Apr-2020  martin Merge changes from current as of 20200406
 1.19.18.1 10-Jun-2019  christos Sync with HEAD
 1.19.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.19.10.1 08-Aug-2018  martin Pull up following revision(s) (requested by simonb in ticket #966):

sys/external/bsd/dwc2/dist/dwc2_core.h: revision 1.9
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.21

Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.24.4.1 03-Apr-2021  thorpej Sync with HEAD.
 1.15 08-Aug-2018  simonb Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.14 23-Apr-2016  skrll branches: 1.14.10; 1.14.16; 1.14.18;
Merge nick-nhusb

- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
 1.13 24-Feb-2016  skrll Reduce diff to upstream by using

sys/external/bsd/{include/workqueue.h,linux/linux_work.c}

This also fixes CI20 dwctwo start up as reported by macallan@
 1.12 14-Feb-2016  skrll Merge conflicts
 1.11 14-Feb-2016  skrll Fix DWC2_READ_4 in dwc2_sample_frrem which is unused
 1.10 30-Aug-2015  skrll Merge conflicts
 1.9 03-Sep-2014  skrll branches: 1.9.2;
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.

Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.8 03-Apr-2014  skrll branches: 1.8.4; 1.8.6; 1.8.8; 1.8.10;
Merge conflicts.
 1.7 12-Nov-2013  skrll Make CONFIG_USB_DWC2_DEBUG_PERIODIC compile.
 1.6 05-Oct-2013  skrll Merge conflicts.
 1.5 27-Sep-2013  skrll First pass at isoc transfer support - seems to work. More testing
required.
 1.4 27-Sep-2013  skrll Tidyup dwc2_host_is_b_hnp_enabled
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.6 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.5 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.4 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.8.10.3 03-Dec-2017  jdolecek update from HEAD
 1.8.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.8.10.1 03-Apr-2014  tls file dwc2_hcd.h was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.8.8.2 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.8.8.1 08-Sep-2014  msaitoh branches: 1.8.8.1.4;
Pull up following revision(s) (requested by skrll in ticket #75):
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.11
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.10
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.9
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.
Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.8.8.1.4.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.8.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.8.6.1 03-Apr-2014  yamt file dwc2_hcd.h was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.8.4.2 18-May-2014  rmind sync with head
 1.8.4.1 03-Apr-2014  rmind file dwc2_hcd.h was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.9.2.3 19-Mar-2016  skrll Sync with HEAD
 1.9.2.2 22-Sep-2015  skrll Sync with HEAD
 1.9.2.1 19-Mar-2015  skrll Do the same as OpenBSD and get rid of the *_handle typedefs and use
plain structures insteads
 1.14.18.1 10-Jun-2019  christos Sync with HEAD
 1.14.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.14.10.1 08-Aug-2018  martin Pull up following revision(s) (requested by simonb in ticket #966):

sys/external/bsd/dwc2/dist/dwc2_core.h: revision 1.9
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.21

Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.12 12-Apr-2025  mlelstv From upstream, fixes issues with isochronous transfers.
 1.11 09-Apr-2023  riastradh branches: 1.11.6;
dwc2: KASSERT(A && B) -> KASSERT(A); KASSERT(B)
 1.10 21-Dec-2021  skrll Change the usb_mem API to take a bus_dma_tag_t in usb_allocmem instead of
a struct usbd_bus *.

This allows an HCD to use more than one tag.
 1.9 05-Apr-2020  skrll Switch USB to use non-coherent buffers for data transfers in the
same way as OpenBSD.

The use of coherent (uncacheable on ARM and other arches) mappings
for transfer buffers impacts performance, espcially where memcpys
are involved.

Audit the necessary usb_syncmem operations - a few were missing.
 1.8 24-Feb-2016  skrll branches: 1.8.18;
Trailing whitespace
 1.7 14-Feb-2016  skrll Merge conflicts
 1.6 03-Apr-2014  skrll branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10; 1.6.12; 1.6.16;
Merge conflicts.
 1.5 14-Dec-2013  skrll Remove unused variables.
 1.4 05-Oct-2013  skrll Merge conflicts.
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.5 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.4 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.6.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.6.12.1 19-Mar-2016  skrll Sync with HEAD
 1.6.10.3 03-Dec-2017  jdolecek update from HEAD
 1.6.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.6.10.1 03-Apr-2014  tls file dwc2_hcdddma.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.6.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.6.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.6.6.1 03-Apr-2014  yamt file dwc2_hcdddma.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.6.4.2 18-May-2014  rmind sync with head
 1.6.4.1 03-Apr-2014  rmind file dwc2_hcdddma.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.8.18.1 08-Apr-2020  martin Merge changes from current as of 20200406
 1.11.6.1 02-Aug-2025  perseant Sync with HEAD
 1.16 12-Apr-2025  mlelstv From upstream, fixes issues with isochronous transfers.
 1.15 12-Aug-2018  skrll branches: 1.15.36;
Fixup previous to not break ping protocol. My bad.
 1.14 08-Aug-2018  simonb Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.13 14-Feb-2016  skrll branches: 1.13.10; 1.13.16; 1.13.18;
Merge conflicts
 1.12 30-Aug-2015  skrll Merge conflicts
 1.11 24-Nov-2014  skrll branches: 1.11.2;
Simplify the NAK holdoff change.
 1.10 03-Sep-2014  skrll Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.

Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.9 26-Jul-2014  skrll branches: 1.9.2; 1.9.4;
Recover from channel halt errors by using the 3 strikes xacterr rule.

Adapted from the RaspberryPI linux driver.

This allows the rum(4) I was sent to be somewhat usable. Need to
investigate further what is causing the problem in the first place.

Might help PR/49019 (RPI: interrupt storm when url0 is up)
 1.8 03-Apr-2014  skrll branches: 1.8.2; 1.8.4; 1.8.6;
Merge conflicts.
 1.7 21-Mar-2014  skrll Fix non-USB_DEBUG (and non-DWC2_DEBUG) build
 1.6 24-Nov-2013  skrll Resolve conflicts.
 1.5 05-Oct-2013  skrll Merge conflicts.
 1.4 27-Sep-2013  skrll Use the hsotg->lock spin lock solely
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.7 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.6 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.5 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.4 24-Nov-2013  skrll Import dwc2 2013-11-24
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.8.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.8.6.1 03-Apr-2014  yamt file dwc2_hcdintr.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.8.4.2 18-May-2014  rmind sync with head
 1.8.4.1 03-Apr-2014  rmind file dwc2_hcdintr.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.8.2.1 10-Aug-2014  tls Rebase.
 1.9.4.3 03-Dec-2017  jdolecek update from HEAD
 1.9.4.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.9.4.1 26-Jul-2014  tls file dwc2_hcdintr.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.9.2.2 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.9.2.1 08-Sep-2014  msaitoh branches: 1.9.2.1.4;
Pull up following revision(s) (requested by skrll in ticket #75):
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.11
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.10
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.9
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.
Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.9.2.1.4.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.11.2.2 19-Mar-2016  skrll Sync with HEAD
 1.11.2.1 22-Sep-2015  skrll Sync with HEAD
 1.13.18.1 10-Jun-2019  christos Sync with HEAD
 1.13.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.13.10.2 13-Aug-2018  martin Pull up following revision(s) (requested by skrll in ticket #971):

sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.15

Fixup previous to not break ping protocol. My bad.
 1.13.10.1 08-Aug-2018  martin Pull up following revision(s) (requested by simonb in ticket #966):

sys/external/bsd/dwc2/dist/dwc2_core.h: revision 1.9
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.21

Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.15.36.1 02-Aug-2025  perseant Sync with HEAD
 1.16 21-Dec-2021  skrll Change the usb_mem API to take a bus_dma_tag_t in usb_allocmem instead of
a struct usbd_bus *.

This allows an HCD to use more than one tag.
 1.15 08-Aug-2018  simonb Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.14 14-Feb-2016  skrll branches: 1.14.10; 1.14.16; 1.14.18;
Merge conflicts
 1.13 31-Aug-2015  uebayasi Fix build.
 1.12 30-Aug-2015  skrll Merge conflicts
 1.11 03-Sep-2014  skrll branches: 1.11.2;
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.

Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.10 03-Jul-2014  skrll branches: 1.10.2; 1.10.4;
Trailing whitespace.
 1.9 03-Apr-2014  skrll branches: 1.9.2; 1.9.4; 1.9.6;
Merge conflicts.
 1.8 21-Mar-2014  skrll Fix non-USB_DEBUG (and non-DWC2_DEBUG) build
 1.7 02-Jan-2014  skrll Protect access of urb->hcpriv by adapting the following change from the
Raspberry PI dwc_otg driver.

https://github.com/raspberrypi/linux/commit/38753ce72d4f10d5d0f1ed27fa691a2ba8910941

dwc_otg: prevent OOPSes during device disconnects

The dwc_otg_urb_enqueue function is thread-unsafe. In particular the
access of urb->hcpriv, usb_hcd_link_urb_to_ep, dwc_otg_urb->qtd and
friends does not occur within a critical section and so if a device
was unplugged during activity there was a high chance that the
usbcore hub_thread would try to disable the endpoint with partially-
formed entries in the URB queue. This would result in BUG() or null
pointer dereferences.

Fix so that access of urb->hcpriv, enqueuing to the hardware and
adding to usbcore endpoint URB lists is contained within a single
critical section.
 1.6 24-Nov-2013  skrll Resolve conflicts.
 1.5 14-Nov-2013  skrll Remove unused variable.
 1.4 05-Oct-2013  skrll Merge conflicts.
 1.3 25-Sep-2013  skrll Resolve conflicts
 1.2 05-Sep-2013  skrll Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.7 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.6 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.5 03-Apr-2014  skrll Import dwc2 2014-04-03
 1.1.1.4 24-Nov-2013  skrll Import dwc2 2013-11-24
 1.1.1.3 05-Oct-2013  skrll Import dwc2 2013-10-05
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.9.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.9.6.1 03-Apr-2014  yamt file dwc2_hcdqueue.c was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.9.4.2 18-May-2014  rmind sync with head
 1.9.4.1 03-Apr-2014  rmind file dwc2_hcdqueue.c was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000
 1.9.2.1 10-Aug-2014  tls Rebase.
 1.10.4.3 03-Dec-2017  jdolecek update from HEAD
 1.10.4.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.10.4.1 03-Jul-2014  tls file dwc2_hcdqueue.c was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.10.2.2 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.10.2.1 08-Sep-2014  msaitoh branches: 1.10.2.1.4;
Pull up following revision(s) (requested by skrll in ticket #75):
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.11
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.10
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.9
Adapt the NAK holdoff scheme for FS/LS devices from the Raspberry Pi
Foundation driver.
Should fix PR/49019 - RPI: interrupt storm when url0 is up
 1.10.2.1.4.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.11.2.2 19-Mar-2016  skrll Sync with HEAD
 1.11.2.1 22-Sep-2015  skrll Sync with HEAD
 1.14.18.1 10-Jun-2019  christos Sync with HEAD
 1.14.16.1 06-Sep-2018  pgoyette Sync with HEAD

Resolve a couple of conflicts (result of the uimin/uimax changes)
 1.14.10.1 08-Aug-2018  martin Pull up following revision(s) (requested by simonb in ticket #966):

sys/external/bsd/dwc2/dist/dwc2_core.h: revision 1.9
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcd.h: revision 1.15
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: revision 1.14
sys/external/bsd/dwc2/dist/dwc2_hcd.c: revision 1.21

Merge
https://github.com/torvalds/linux/commit/38d2b5fb75c15923fb89c32134516a623515bce4
to mitigate USB NAK interrupt storms, with an extra change from
skrll@ to also mitigate interrupt storms on the non-split case with
older DWC2 cores.

Fixes woeful USB disk performance on an ERLITE.

Much thanks to skrll@ for pointer to the above patch, handling the
non-split case and testing.
 1.4 14-Feb-2016  skrll Merge conflicts
 1.3 30-Aug-2015  skrll Merge conflicts
 1.2 25-Sep-2013  skrll branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10; 1.2.12; 1.2.16;
Resolve conflicts
 1.1 05-Sep-2013  skrll branches: 1.1.1;
Initial revision
 1.1.1.4 14-Feb-2016  skrll Import latest dwc2 sources

commit 192cb07f7928e8cb09a9851e6c0f7478baa3bc6d
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:28 2016 -0800

usb: dwc2: Fix probe problem on bcm2835

Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980dc72 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit 03b32e4c9bd1b52fcf1e4304e7a704aa0315e398
Author: John Youn <John.Youn@synopsys.com>
Date: Mon Jan 11 16:32:14 2016 -0800

Revert "usb: dwc2: Move reset into dwc2_get_hwparams()"

This reverts commit 263b7fb557f7 ("usb: dwc2: Move reset into
dwc2_get_hwparams()") due to regression found on bcm2835 platform. USB
ethernet fails, due to being unable to pick up proper parameters when
performing a plain reset before reading hw params.

Below shows the results of the gnptxfsiz and hptxfsiz with and before
and after reverting this (from Stefan Wahren):

So here is the probe result before Patch 1 is applied:

[ 1.283148] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.313894] dwc2 20980000.usb: gnptxfsiz=00201000
[ 1.314104] dwc2 20980000.usb: hptxfsiz=00000000
[ 1.353908] dwc2 20980000.usb: 256 invalid for host_nperio_tx_fifo_size. Check HW configuration.
[ 1.354262] dwc2 20980000.usb: 512 invalid for host_perio_tx_fifo_size. Check HW configuration.
[ 1.394249] dwc2 20980000.usb: DWC OTG Controller
[ 1.394561] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.394917] dwc2 20980000.usb: irq 33, io mem 0x00000000

And here is the probe result after Patch 1 is applied:

[ 1.280107] dwc2 20980000.usb: Configuration mismatch. dr_mode forced to host
[ 1.353949] dwc2 20980000.usb: gnptxfsiz=01001000
[ 1.354166] dwc2 20980000.usb: hptxfsiz=02002000
[ 1.434301] dwc2 20980000.usb: DWC OTG Controller
[ 1.434616] dwc2 20980000.usb: new USB bus registered, assigned bus number 1
[ 1.434973] dwc2 20980000.usb: irq 33, io mem 0x00000000

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

commit a40a00318c7fcdd23e73cfffac0e33430a43a3e3
Author: Heiko Stübner <heiko.stuebner@collabora.com>
Date: Fri Dec 18 19:30:59 2015 +0100

usb: dwc2: add shutdown callback to platform variant

In specific conditions (involving usb hubs) dwc2 devices can create a
lot of interrupts, even to the point of overwhelming devices running
at low frequencies. Some devices need to do special clock handling
at shutdown-time which may bring the system clock below the threshold
of being able to handle the dwc2 interrupts. Disabling dwc2-irqs
in a shutdown callbacks prevents reboots/poweroffs from getting stuck
in such cases.

The hsotg struct already contains an unused irq element, so we can
just use it to store the irq number for the shutdown callback.

Reviewed-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Heiko Stuebner <heiko.stuebner@collabora.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d76c92c2fcbee4fd1f6d7b375d71057c7a615b1
Author: Marek Vasut <marex@denx.de>
Date: Fri Dec 18 03:26:17 2015 +0100

usb: dwc2: gadget: Repair DSTS register decoding

The "enumspd" field is located in register DSTS[2:1], but the code
which checks the bitfield does not shift the value accordingly. This
in turn causes incorrect detection of gadget link partner speed in
dwc2_hsotg_irq_enumdone() .

Shift the value accordingly to fix the problem with speed detection.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 60c0288c72c980fb37ed4e48f68c9743a53b662c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:41 2015 -0800

usb: dwc2: gadget: Remove call to dwc2_hsotg_init()

Remove call to dwc2_hsotg_init() from dwc2_gadget_init(). The
gadget_init function should not access any device registers because the
mode isn't guaranteed here.

Also, this is already called elsewhere before anything starts on the
gadget so it is not necessary here.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 25362d318371e1e271dda24995ceabb8457b3b7c
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:27 2015 -0800

usb: dwc2: Remove redundant reset in probe

Reset already happens before this so just force the dr_mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 97e463886b873f62bea2293e7edf81fdb884b84f
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:18:13 2015 -0800

usb: dwc2: Reduce delay when forcing mode in reset

The delay for force mode is only 25ms according to the databook.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 241729baa932a69cd203dbaa81abbb8af5b77b65
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:59 2015 -0800

usb: dwc2: gadget: Replace dwc2_hsotg_corereset()

The dwc2_core_reset() function exists in the core so use that one
instead.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 43e9034904dd37db7ed87fa8f5039c561c4004cd
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:45 2015 -0800

usb: dwc2: gadget: Use hw params from core

Use the previously cached hw params in the gadget. This saves a reset
and force mode in the gadget initialization during probe and makes
getting the hardware parameters consistent between gadget and host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 55e1040e424b59063da627fb580ec953f4c01de7
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:31 2015 -0800

usb: dwc2: Improve handling of host and device hwparams

Adds separate functions to get the host and device specific hardware
parameters. The functions check whether the parameters need to be read
at all, depending on dr_mode, and forces the mode only if necessary.
This saves some delays during probe. This also adds two device mode
parameters that will be used by the gadget.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09c96980dc723462ed2eeacc945fed5bcb278f85
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:17:12 2015 -0800

usb: dwc2: Add functions to set and clear force mode

Added functions to set force mode for host and device. These functions
will check the current mode and only force if needed thus avoiding
unnecessary force mode delays. However clearing the mode is currently
done unconditionally and with the delay in place. This is needed during
the connector ID status change interrupt in order to ensure that the
mode has changed properly. This preserves the old behavior only for this
case. The warning comment about this is moved into the clear mode
condition.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 263b7fb557f797d9d4d1dcf93fb6bb2efc3f1d46
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:58 2015 -0800

usb: dwc2: Move reset into dwc2_get_hwparams()

The reset is required to get reset values of the hardware parameters but
the force mode is not. Move the base reset into dwc2_get_hwparams() and
do the reset and force mode afterwards.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1696d5ab99ef885ae62da5ad58f9eff16da7ff78
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:45 2015 -0800

usb: dwc2: Move mode querying functions into core.h

These functions should go in core.h where they can be called from core,
device, or host.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 5268ed9d2e3b52f703f3661eef14cecbb2b572d4
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:31 2015 -0800

usb: dwc2: Fix dr_mode validation

The dr_mode parameter was being checked against how the dwc2 module
was being configured at compile time. But it wasn't checked against
the hardware capabilities, nor were the hardware capabilities checked
against the compilation parameters.

This commit adds those checks and adjusts dr_mode to an appropriate
value, if needed. If the hardware capabilities and module compilation
do not match then we fail as it wouldn't be possible to run properly.

The hardware, module, and dr_mode, can each be set to host, device,
or otg. Check that all these values are compatible and adjust the
value of dr_mode if possible.

The following table summarizes the behavior:

actual
HW MOD dr_mode dr_mode
------------------------------
HST HST any : HST
HST DEV any : ---
HST OTG any : HST

DEV HST any : ---
DEV DEV any : DEV
DEV OTG any : DEV

OTG HST any : HST
OTG DEV any : DEV
OTG OTG any : dr_mode

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6bea962053e76a4407f0d138184a8737eea960ee
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:17 2015 -0800

usb: dwc2: Add functions to check the HW OTG config

Added functions to query the GHWCFG2.OTG_MODE. This tells us whether the
controller hardware is configured for OTG, device-only, or host-only.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b5d308abef1c5c0f24128845e41d414a8f8438f6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:16:03 2015 -0800

usb: dwc2: Add dwc2_core_reset()

dwc2_core_reset() was previously renamed to
dwc2_core_reset_and_dr_force_mode(). Now add back dwc2_core_reset() which
performs only a basic core reset without forcing the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6d58f346a61ff50eda740e6216e9829e572d75c8
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:49 2015 -0800

usb: dwc2: Rename dwc2_core_reset()

Renamed dwc2_core_reset() to dwc2_core_reset_and_force_dr_mode(). This
describes what it is doing more accurately. This is in preparation of
introducing a plain dwc2_core_reset() function that only performs the
reset and doesn't force the mode.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b8ccc593eeeacde0e6794c4dcec0a57eba7356e6
Author: John Youn <John.Youn@synopsys.com>
Date: Thu Dec 17 11:15:35 2015 -0800

usb: dwc2: Reorder AHBIDLE and CSFTRST in dwc2_core_reset()

According to the databook, the core soft reset should be done before
checking for AHBIDLE. The gadget version of core reset had it correct
but the hcd version did not. This fixes the hcd version.

Signed-off-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 7d56cc2620f523eba7a831daa22186c8ae5bbdfe
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:15:21 2015 -0800

usb: dwc2: Avoid more calls to dwc2_core_reset()

Calls to dwc2_core_reset() are currently very slow, taking at least
150ms (possibly more). It behooves us to take as many of these calls
out as possible.

It turns out that the calls in dwc2_fs_phy_init() and dwc2_hs_phy_init()
should (as documented in the code) only be needed if we need to do a PHY
SELECT. That means that if we see that we can avoid the PHY SELECT then
we can avoid the reset.

This patch appears to successfully bypass two resets (one per USB
device) on rk3288-based ARM Chromebooks.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 20bde643434d541bc5f662c5836a05e9e276eca3
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:15:08 2015 -0800

usb: dwc2: reduce dwc2 driver probe time

I found that the probe function of dwc2 driver takes much time
when kernel boot up. There are many long delays in the probe
function these take almost 1 second.

This patch trying to reduce unnecessary delay time.

In dwc2_core_reset() I see it use two at least 20ms delays to
wait AHB idle and core soft reset, but dwc2 data book said that
dwc2 core soft reset and AHB idle just need a few clocks (I think
it refers to AHB clock, and AHB clock run at 150MHz in my RK3288
board), so 20ms is too long, delay 1us for wait AHB idle and soft
reset is enough.

And in dwc2_get_hwparams() it takes 150ms to wait ForceHostMode
and ForceDeviceMode valid but in data book it said software must
wait at least 25ms before the change to take effect, so I reduce
this time to 25ms~50ms. By the way, is there any state bit show
that the force mode take effect ? Could we poll curmod bit for
figuring out if the change take effect ?

It seems that usleep_range() at boot time will pick the longest
value in the range. In dwc2_core_reset() there is a very long
delay takes 200ms, and this function run twice when probe, could
any one tell me is this delay time resonable ?

I have tried this patch in my RK3288-evb board. It works well.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f619473140df4e1a10f4c10f693d214807ebdb03
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:54 2015 -0800

usb: dwc2: Speed dwc2_get_hwparams() on some host-only ports

On some host-only DWC2 ports (like the one in rk3288) when we set
GUSBCFG_FORCEHOSTMODE in GUSBCFG and then read back, we don't see the
bit set. Presumably that's because the port is always forced to HOST
mode so there's no reason to implement these status bits.

Since we know dwc2_core_reset() is always called before
dwc2_get_hwparams() and we know dwc2_core_reset() should have set
GUSBCFG_FORCEHOSTMODE whenever hsotg->dr_mode == USB_DR_MODE_HOST, we
can just check hsotg->dr_mode to decide that we can skip the delays in
dwc2_get_hwparams().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0fe239bc190453fe82252c6d41a74e685730cd93
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:40 2015 -0800

usb: dwc2: Avoid double-reset at boot time

In (usb: dwc2: reset dwc2 core before dwc2_get_hwparams()) we added an
extra reset to the probe path for the dwc2 USB controllers. This
allowed proper detection of parameters even if the firmware had already
used the USB part.

Unfortunately, this extra reset is quite slow and is affecting boot
speed. We can avoid the double-reset by skipping the extra reset that
would happen just after the one we added. Logic that explains why this
is safe:

* As of the CL mentioned above, we now always call dwc2_core_reset() in
dwc2_driver_probe() before dwc2_hcd_init().

* The only caller of dwc2_hcd_init() is dwc2_driver_probe(), so we're
guaranteed that dwc2_core_reset() was called before dwc2_hdc_init().

* dwc2_hdc_init() is the only caller that passes an irq other than -1 to
dwc2_core_init(). Thus if dwc2_core_init() is called with an irq
other than -1 we're guaranteed that dwc2_core_reset was called before
dwc2_core_init().

...this allows us to remove the dwc2_core_reset() in dwc2_core_init() if
irq is not < 0.

Note that since "irq" wasn't used in the function dwc2_core_init()
anyway and since select_phy was always set at exactly the same times we
could avoid the reset, we remove "irq" and rename "select_phy" to
"initial_setup" and adjust the callers accordingly.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit cebfdbf329ae929ccb71632888a7c2100c3d1eeb
Author: Yunzhi Li <lyz@rock-chips.com>
Date: Thu Dec 17 11:14:26 2015 -0800

usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
be called before dwc2_get_hwparams() to reset core registers to
default value. Without this the FIFO setting might be incorrect
because calculating FIFO size need power-on value of
GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.

This patch could avoid warnning massage like in rk3288 platform:
[ 2.074764] dwc2 ff580000.usb: 256 invalid for
host_perio_tx_fifo_size. Check HW configuration.

Signed-off-by: Yunzhi Li <lyz@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 991824677fe0a555394d8093b64647dbd08b89b0
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Dec 17 11:14:12 2015 -0800

usb: dwc2: Restore GUSBCFG in dwc2_get_hwparams()

Previously dwc2_get_hwparams() was changing GUSBCFG and not putting it
back the way it was (specifically it set and cleared FORCEHOSTMODE).
Since we want to move dwc2_core_reset() _before_ dwc2_get_hwparams() we
should make sure dwc2_get_hwparams() isn't messing with things in a
permanent way.

Since we're now looking at GUSBCFG, it's obvious that we shouldn't need
all the extra delays if FORCEHOSTMODE was already set. This will avoid
some delays for any ports that have forced host mode.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3be99cd0e882dd2127b8cfe3942f5e464915aeba
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Mon Dec 7 12:07:31 2015 +0100

usb: dwc2: gadget: don't overwrite DCTL register on NAKEFF interrupts

When receiving GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF interrupt,
DCTL will be overwritten with DCTL_CGOUTNAK or DCTL_CGNPINNAK values.
Instead of overwriting it, write only needed bits.

It could cause an issue if GINTSTS_GINNAKEFF or GINTSTS_GOUTNAKEFF
interrupt is received after dwc2 disabled pullup by writing
DCTL_SFTDISCON bit.
Pullup will then be re-enabled whereas it should not.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 0676c7e734e3807f4e91f5d0edcaeed1f5ff412a
Author: Du, Changbin <changbin.du@intel.com>
Date: Fri Dec 4 15:38:23 2015 +0800

usb: dwc2: fix transfer stop programming for out endpoint

To stop an out endpoint, software should set sets the Global OUT NAK,
but not the Global Non-periodic IN NAK. This driver bug leads the out-ep
failed be in disabled state with below error.

dwc2_hsotg_ep_stop_xfr: timeout DOEPCTL.EPDisable

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Du, Changbin <changbin.du@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 29539019b46f0e5f64f80f2e9dc8f9bb34d16b4b
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:28 2015 -0800

usb: dwc2: host: Clear interrupts before handling them

In general it is wise to clear interrupts before processing them. If
you don't do that, you can get:
1. Interrupt happens
2. You look at system state and process interrupt
3. A new interrupt happens
4. You clear interrupt without processing it.

This patch was actually a first attempt to fix missing device insertions
as described in (usb: dwc2: host: Fix missing device insertions) and it
did solve some of the signal bouncing problems but not all of
them (which is why I submitted the other patch). Specifically, this
patch itself would sometimes change:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...to:
1. hardware sees connect
2. hardware sees disconnect
3. dwc2_port_intr() - clears connect interrupt
4. hardware sees connect
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

...but with different timing then sometimes we'd still miss cable
insertions.

In any case, though this patch doesn't fix any (known) problems, it
still seems wise as a general policy to clear interrupt before handling
them.

Note that for dwc2_handle_usb_port_intr(), instead of moving the clear
of PRTINT to the beginning of the function we remove it completely. The
only way to clear PRTINT is to clear the sources that set it in the
first place.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4a065c7bdbec9536f7b899241b125b9c3b5ba97a
Author: Douglas Anderson <dianders@chromium.org>
Date: Fri Nov 20 09:06:27 2015 -0800

usb: dwc2: host: Add missing spinlock in dwc2_hcd_reset_func()

The dwc2_hcd_reset_func() function is only ever called directly by a
delayed work function. As such no locks are already held when the
function is called.

Doing a read-modify-write of CPU registers and setting fields in the
main hsotg data structure is a bad idea without locks. Let's add
locks.

The bug was found by code inspection only. It turns out that the
dwc2_hcd_reset_func() is only ever called today if the
"host_support_fs_ls_low_power" parameter is enabled and no code in
mainline enables that parameter. Thus no known issues in mainline are
fixed by this patch, but it's still probably wise to fix the function.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 69b76cdff592058ea445cd40e18c75dffaba4cb9
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Nov 11 10:33:52 2015 -0800

usb: dwc2: host: Support immediate retries for split transactions

In some cases, like when you've got a "Microsoft Wireless Keyboard 2000"
connected to dwc2 with a hub, expected that we'll get some transfer
errors sometimes. The controller is expected to try at least 3 times
before giving up. See figure "Figure A-67. Normal HS CSPLIT 3 Strikes
Smash" in the USB spec.

The dwc2 controller has a way to support this by using the "EC_MC"
field. The Raspberry Pi driver has logic for setting this right. See
fiq_fsm_queue_split_transaction() in their "dwc_otg_hcd.c". Let's use
the same logic.

After making this change, we no longer get dropped characters from the
above mentioned keyboard. Other devices on the same bus as the keyboard
also behave more properly.

Thanks for Julius Werner for the expert analysis and suggestions.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6a6595318ac2dd169d2931a1d9431a64f4ada75c
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Nov 19 13:23:14 2015 -0800

usb: dwc2: host: Fix missing device insertions

If you've got your interrupt signals bouncing a bit as you insert your
USB device, you might end up in a state when the device is connected but
the driver doesn't know it.

Specifically, the observed order is:
1. hardware sees connect
2. hardware sees disconnect
3. hardware sees connect
4. dwc2_port_intr() - clears connect interrupt
5. dwc2_handle_common_intr() - calls dwc2_hcd_disconnect()

Now you'll be stuck with the cable plugged in and no further interrupts
coming in but the driver will think we're disconnected.

We'll fix this by checking for the missing connect interrupt and
re-connecting after the disconnect is posted. We don't skip the
disconnect because if there is a transitory disconnect we really want to
de-enumerate and re-enumerate.

Notes:
1. As part of this change we add a "force" parameter to
dwc2_hcd_disconnect() so that when we're unloading the module we
avoid the new behavior. The need for this was pointed out by John
Youn.
2. The bit of code needed at the end of dwc2_hcd_disconnect() is
exactly the same bit of code from dwc2_port_intr(). To avoid
duplication, we refactor that code out into a new function
dwc2_hcd_connect().

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 37dd9d65cc41fcc7e77645a1cdf2659472809b96
Author: Zhangfei Gao <zhangfei.gao@linaro.org>
Date: Wed Nov 18 15:39:47 2015 +0800

usb: dwc2: add support of hi6220

Support hisilicon,hi6220-usb for HiKey board

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3b5fcc9ac2f4453a5609cc89ac7618b1b27ccb01
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:31 2015 +0100

usb: dwc2: host: use kmem cache to allocate descriptors

Kmem caches help to get correct boundary for descriptor buffers
which need to be 512 bytes aligned for dwc2 controller.
Two kmem caches are needed for generic descriptors and for
hs isochronous descriptors which doesn't have same size.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit e23b8a54a440a2b8ee5c9dc3eb2099ecf813ef70
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:30 2015 +0100

usb: dwc2: host: fix descriptor list address masking

Masks for HCDMA.CTD and HCDMA.DMAAddr are incorrect. As we always
start from first descriptor, no need to mask the address anyway.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 95105a998dff0747327f11708ea24480ee0eca54
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Fri Nov 20 11:49:29 2015 +0100

usb: dwc2: host: avoid usage of dma_alloc_coherent with irqs disabled

Use Streaming DMA mappings to handle cache coherency of frame list and
descriptor list. Cache are always flushed before controller access it
or before cpu access it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit fbb9e22b15ad3c9a98c66bad801b4d1366e8bf20
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Fri Nov 20 11:49:28 2015 +0100

usb: dwc2: host: enable descriptor dma for fs devices

As descriptor dma mode does not support split transfers, it can't be
enabled for high speed devices. Add a core parameter to enable it for
full speed devices.

Ensure frame list and descriptor list are correctly freed during
disconnect.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 762d3a1a9cd7438a8453e005ee5b2bab3203d9c3
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:45 2015 +0100

usb: dwc2: host: process all completed urbs

Process all completed urbs, if more urbs are complete by the time
driver processes completion interrupt.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3f808bdae75eaf464b1b2710894950772a3784f8
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:44 2015 +0100

usb: dwc2: host: always increment available host channel during release

When releasing a channel, increment hsotg->available_host_channels even
in case a periodic channel is released.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c17b337c1ea4c681595531912585a94f4bd7f8e7
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:43 2015 +0100

usb: dwc2: host: program descriptor for next frame

Isochronous descriptor is currently programmed for the frame
after the last descriptor was programmed.

If the last descriptor frame underrun, then current descriptor must
take this into account and must be programmed on the current frame + 1.
This overrun usually happens when system is loaded and dwc2 can't init
descriptor list in time.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit b9392d9920fdce50abbe4af758cd1a24b922c81c
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:42 2015 +0100

usb: dwc2: host: add function to compare frame index

This function allow comparing frame index used for
descriptor list which has 64 entries.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 2b046bc5aaefd4aba7195e6a73afe14f7f786692
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:41 2015 +0100

usb: dwc2: host: spinlock release channel

Prevent dwc2 driver from accessing channel while it frees it.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 26a19ea699060fded98257e65b0ae5272a5ea1da
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:40 2015 +0100

usb: dwc2: host: fix use of qtd after free in desc dma mode

When completing non isoc xfer, dwc2_complete_non_isoc_xfer_ddma()
is relying on qtd->n_desc to process the corresponding number of
descriptors.

During the processing of these descriptors, qtd could be unlinked
and freed if xfer is done and urb is no more in progress.

In this case, dwc2_complete_non_isoc_xfer_ddma() will read again
qtd->n_desc whereas qtd has been freed. This will lead to unpredictable
results since qtd->n_desc is no more valid value.

To avoid this error, return a result != 0 in dwc2_process_non_isoc_desc(),
so that dwc2_complete_non_isoc_xfer_ddma() stops desc processing.

This has been seen with Slub debug enabled.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit c503b38153852d88774b54ae17f7723f68c6dc33
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:39 2015 +0100

usb: dwc2: host: rework isochronous halt path

When a channel is halted because of urb dequeue during transfer
completion, no other qtds must be scheduled until halt is done.
Moreover, all in progress qtds must be given back.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dde4c1bf5df0f852e497e5644d3578885b969fdb
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:38 2015 +0100

usb: dwc2: host: set active bit in isochronous descriptors

Active bit must be enabled in all scheduled descriptors. Else transfer
never start.
Remove previous code which was not correctly configuring descriptors.
Active bit was set before calling dwc2_fill_host_isoc_dma_desc() which
is erasing dma_desc->status.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 3ac38d260fa5dc8ec26ee5b6f5330d726ec00065
Author: Gregory Herrero <gregory.herrero@intel.com>
Date: Thu Nov 5 09:41:37 2015 +0100

usb: dwc2: host: ensure filling of isoc desc is correctly done

Increment qtd->isoc_frame_index_last before testing it, else below
check will never be true and IOC (Interrupt On Complete) bit for
last frame will never be set in descriptor status.

/* Set IOC for each descriptor corresponding to last frame of URB */
if (qtd->isoc_frame_index_last == qtd->urb->packet_count)
dma_desc->status |= HOST_DMA_IOC;

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Gregory Herrero <gregory.herrero@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f74875dc36135ebae82a8e005f4b7f52289d2c40
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Thu Nov 12 21:08:34 2015 +0000

usb: dwc2: fix kernel oops during driver probe

This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.

dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60

Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 8aa90cf2a28645c6733f8879c5fe1848c5d510b7
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:12 2015 +0000

usb: dwc2: make otg clk optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.

So make clk handling optional again.

Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 6c2dad69163fdb4ea82344dcba360fc00b4adda4
Author: Stefan Wahren <stefan.wahren@i2se.com>
Date: Fri Nov 13 17:02:11 2015 +0000

usb: dwc2: Return errors from PHY

When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.

Fixed so that only a non-existing PHY is ignored and any other error
is returned.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit d0464bcf12af54bafe02dd23ac5bd75d825f9fdd
Author: John Youn <John.Youn@synopsys.com>
Date: Fri Nov 13 17:02:10 2015 +0000

usb: dwc2: Make PHY optional

Fixes commit 09a75e857790
("usb: dwc2: refactor common low-level hw code to platform.c")

The above commit consolidated the low-level phy access into a common
location. This change introduced a check from the gadget requiring
that a PHY is specified. This requirement never existed on the host
side and broke some platforms when it was moved into platform.c.

The gadget doesn't require the PHY either so remove the check.

Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Stefan Wahren <info@lategoodbye.de>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e857790 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 1fb7f12d5bec1b0a699c85d724bd5184a01fa2dd
Author: Douglas Anderson <dianders@chromium.org>
Date: Thu Oct 22 13:05:03 2015 -0700

usb: dwc2: host: Fix remote wakeup when not in DWC2_L2

In commit 734643dfbdde ("usb: dwc2: host: add flag to reflect bus
state") we changed dwc2_port_suspend() not to set the lx_state
anymore (instead it sets the new bus_suspended variable). This
introduced a bug where we would fail to detect device insertions if:

1. Plug empty hub into dwc2
2. Plug USB flash drive into the empty hub.
3. Wait a few seconds
4. Unplug USB flash drive
5. Less than 2 seconds after step 4, plug the USB flash drive in again.

The dwc2_hcd_rem_wakeup() function should have been changed to look at
the new bus_suspended variable.

Let's fix it. Since commit b46146d59fda ("usb: dwc2: host: resume root
hub on remote wakeup") talks about needing the root hub resumed if the
bus was suspended, we'll include it in our test.

It appears that the "port_l1_change" should only be set to 1 if we were
in DWC2_L1 (the driver currently never sets this), so we'll update the
former "else" case based on this test.

Fixes: 734643dfbdde ("usb: dwc2: host: add flag to reflect bus state")
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Gregory Herrero <gregory.herrero@intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit f16593034a30bcbef8f63c37d0f2b9e1a0902c2d
Author: Douglas Anderson <dianders@chromium.org>
Date: Tue Oct 20 16:33:53 2015 -0700

usb: dwc2: host: Fix ahbcfg for rk3066

The comment for ahbcfg for rk3066 parameters (also used for rk3288)
claimed that ahbcfg was INCR16, but it wasn't. Since the bits weren't
shifted properly, the 0x7 ended up being masked and we ended up
programming 0x3 for the HBstLen. Let's set it to INCR16 properly.

As per Wu Liang Feng at Rockchip this may increase transmission
efficiency. I did blackbox tests with writing 0s to a USB-based SD
reader (forcefully capping CPU Freq to try to measure efficiency):
cd /sys/devices/system/cpu/cpu0/cpufreq
echo userspace > scaling_governor
echo 126000 > scaling_setspeed
for i in $(seq 10); do
dd if=/dev/zero of=/dev/sdb bs=1M count=750
done

With the above tests I found that speeds went from ~15MB/s to ~18MB/s.
Note that most other tests I did (including reading from the same USB
reader) didn't show any difference in performance.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: John Youn <johnyoun@synopsys.com>
Reviewed-by: Liangfeng Wu <wulf@rock-chips.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit dc8730846948e517169f630826cd2c97615f5ee8
Author: Doug Anderson <dianders@chromium.org>
Date: Fri Oct 16 16:01:32 2015 -0700

usb: dwc2: host: Fix use after free w/ simultaneous irqs

While plugging / unplugging on a DWC2 host port with "slub_debug=FZPUA"
enabled, I found a crash that was quite obviously a use after free.

It appears that in some cases when we handle the various sub-cases of
HCINT we may end up freeing the QTD. If there is more than one bit set
in HCINT we may then end up continuing to use the QTD, which is bad.
Let's be paranoid and check for this after each sub-case. This should
be safe since we officially have the "hsotg->lock" (it was grabbed in
dwc2_handle_hcd_intr).

The specific crash I found was:
Unable to handle kernel paging request at virtual address 6b6b6b9f

At the time of the crash, the kernel reported:
(dwc2_hc_nak_intr+0x5c/0x198)
(dwc2_handle_hcd_intr+0xa84/0xbf8)
(_dwc2_hcd_irq+0x1c/0x20)
(usb_hcd_irq+0x34/0x48)

Popping into kgdb found that "*qtd" was filled with "0x6b", AKA qtd had
been freed and filled with slub_debug poison.

kgdb gave a little better stack crawl:
0 dwc2_hc_nak_intr (hsotg=hsotg@entry=0xec42e058,
chan=chan@entry=0xec546dc0, chnum=chnum@entry=4,
qtd=qtd@entry=0xec679600) at drivers/usb/dwc2/hcd_intr.c:1237
1 dwc2_hc_n_intr (chnum=4, hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2041
2 dwc2_hc_intr (hsotg=0xec42e058) at drivers/usb/dwc2/hcd_intr.c:2078
3 dwc2_handle_hcd_intr (hsotg=0xec42e058) at
drivers/usb/dwc2/hcd_intr.c:2128
4 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
5 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Popping up to frame #1 (dwc2_hc_n_intr) found:
(gdb) print /x hcint
$12 = 0x12

AKA:
#define HCINTMSK_CHHLTD (1 << 1)
#define HCINTMSK_NAK (1 << 4)

Further debugging found that by simulating receiving those two
interrupts at the same time it was trivial to replicate the
use-after-free. See <http://crosreview.com/305712> for a patch and
instructions. This lead to getting the following stack crawl of the
actual free:
0 arch_kgdb_breakpoint () at arch/arm/include/asm/outercache.h:103
1 kgdb_breakpoint () at kernel/debug/debug_core.c:1054
2 dwc2_hcd_qtd_unlink_and_free (hsotg=<optimized out>, qh=<optimized
out>, qtd=0xe4479a00) at drivers/usb/dwc2/hcd.h:488
3 dwc2_deactivate_qh (free_qtd=<optimized out>, qh=0xe5efa280,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:671
4 dwc2_release_channel (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, qtd=<optimized out>,
halt_status=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:742
5 dwc2_halt_channel (hsotg=0xed424618, chan=0xed5be000, qtd=<optimized
out>, halt_status=<optimized out>) at
drivers/usb/dwc2/hcd_intr.c:804
6 dwc2_complete_non_periodic_xfer (chnum=<optimized out>,
halt_status=<optimized out>, qtd=<optimized out>, chan=<optimized
out>, hsotg=<optimized out>) at drivers/usb/dwc2/hcd_intr.c:889
7 dwc2_hc_xfercomp_intr (hsotg=hsotg@entry=0xed424618,
chan=chan@entry=0xed5be000, chnum=chnum@entry=6,
qtd=qtd@entry=0xe4479a00) at drivers/usb/dwc2/hcd_intr.c:1065
8 dwc2_hc_chhltd_intr_dma (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1823
9 dwc2_hc_chhltd_intr (qtd=0xe4479a00, chnum=6, chan=0xed5be000,
hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:1944
10 dwc2_hc_n_intr (chnum=6, hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2052
11 dwc2_hc_intr (hsotg=0xed424618) at drivers/usb/dwc2/hcd_intr.c:2097
12 dwc2_handle_hcd_intr (hsotg=0xed424618) at
drivers/usb/dwc2/hcd_intr.c:2147
13 _dwc2_hcd_irq (hcd=<optimized out>) at drivers/usb/dwc2/hcd.c:2837
14 usb_hcd_irq (irq=<optimized out>, __hcd=<optimized out>) at
drivers/usb/core/hcd.c:2353

Though we could add specific code to handle this case, adding the
general purpose code to check for all cases where qtd might be freed
seemed safer.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 4d273c2af0fe4fdc84eef27e4521694dc7992065
Author: Douglas Anderson <dianders@chromium.org>
Date: Wed Oct 14 15:58:27 2015 -0700

usb: dwc2: host: Protect PCGCTL with lock in dwc2_port_resume()

From code inspection, it appears to be unsafe to do a read-modify-write
of PCGCTL in dwc2_port_resume(). Let's make sure the spinlock is held
around this operation.

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 09a75e8577901489f77a14a3b305a9a1f67bf25b
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:29 2015 +0200

usb: dwc2: refactor common low-level hw code to platform.c

DWC2 module on some platforms needs three additional hardware
resources: phy controller, clock and power supply. All of them must be
enabled/activated to properly initialize and operate. This was initially
handled in s3c-hsotg driver, which has been converted to 'gadget' part
of dwc2 driver. Unfortunately, not all of this code got moved to common
platform code, what resulted in accessing DWC2 registers without
enabling low-level hardware resources. This fails for example on Exynos
SoCs. This patch moves all the code for managing those resources to
common platform.c file and provides convenient wrappers for controlling
them.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 758ed196fcc4373a129fd661875af52d7e7d4e73
Author: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Wed Oct 14 08:52:28 2015 +0200

usb: dwc2: remove no longer needed init_mutex

init_mutex is a leftover from the time, when s3c-hsotg driver did not
implement proper pull up/down control and emulated it by enabling
enabling/disabling usb phy. Proper pull up/down control has been added
by commit 5b9451f8c4fbaf0549139755fb45ff2b57975b7f ("usb: dwc2: gadget:
use soft-disconnect udc feature in pullup() method"), so init_muxtex can
be removed now to avoid potential deadlocks with other locks.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit 44e4a60dacf8a96f28b5e021b54ba9eeb793ca2e
Author: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Date: Mon Oct 12 11:23:27 2015 +0200

usb: dwc2: fix duplicate argument warning

Fix a duplicate argument warning reported by 0-DAY kernel test
infrastructure in the following patch:
77dbf71 usb: dwc2: host: add disconnect interrupt to host only interrupts

Acked-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Mian Yousaf Kaukab <yousaf.kaukab@intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

commit ec1f9d9f01384fe656a6f92b90de274146fe35a1
Author: Roman Bacik <rbacik@broadcom.com>
Date: Thu Sep 10 18:13:43 2015 -0700

usb: dwc2: gadget: parity fix in isochronous mode

USB OTG driver in isochronous mode has to set the parity of the receiving
microframe. The parity is set to even by default. This causes problems for
an audio gadget, if the host starts transmitting on odd microframes.

This fix uses Incomplete Periodic Transfer interrupt to toggle between
even and odd parity until the Transfer Complete interrupt is received.

Signed-off-by: Roman Bacik <rbacik@broadcom.com>
Reviewed-by: Abhinav Ratna <aratna@broadcom.com>
Reviewed-by: Srinath Mannam <srinath.mannam@broadcom.com>
Signed-off-by: Scott Branden <sbranden@broadcom.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 1.1.1.3 30-Aug-2015  skrll Import dwc2 2015-08-30
 1.1.1.2 25-Sep-2013  skrll Import dwc2 2013-09-25
 1.1.1.1 05-Sep-2013  skrll Import dwc2 2013-09-05
 1.2.16.1 06-Sep-2016  skrll First pass at netbsd-7 updated with USB code from HEAD
 1.2.12.2 19-Mar-2016  skrll Sync with HEAD
 1.2.12.1 22-Sep-2015  skrll Sync with HEAD
 1.2.10.3 03-Dec-2017  jdolecek update from HEAD
 1.2.10.2 20-Aug-2014  tls Rebase to HEAD as of a few days ago.
 1.2.10.1 25-Sep-2013  tls file dwc2_hw.h was added on branch tls-maxphys on 2014-08-20 00:04:22 +0000
 1.2.8.1 05-Apr-2017  snj Pull up following revision(s) (requested by skrll in ticket #1395):
share/man/man4/axe.4: netbsd-7-nhusb
share/man/man4/axen.4: netbsd-7-nhusb
share/man/man4/cdce.4: netbsd-7-nhusb
share/man/man4/uaudio.4: netbsd-7-nhusb
share/man/man4/ucom.4: netbsd-7-nhusb
share/man/man4/uep.4: netbsd-7-nhusb
share/man/man4/urtw.4: netbsd-7-nhusb
share/man/man4/usb.4: netbsd-7-nhusb
share/man/man4/uyap.4: netbsd-7-nhusb
share/man/man4/xhci.4: netbsd-7-nhusb
share/man/man9/usbdi.9: netbsd-7-nhusb
sys/arch/amd64/conf/ALL: netbsd-7-nhusb
sys/arch/amd64/conf/GENERIC: netbsd-7-nhusb
sys/arch/amiga/dev/slhci_zbus.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_otg.c: netbsd-7-nhusb
sys/arch/arm/allwinner/awin_usb.c: netbsd-7-nhusb
sys/arch/arm/amlogic/amlogic_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/at91/at91ohci.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm2835_dwctwo.c: netbsd-7-nhusb
sys/arch/arm/broadcom/bcm53xx_usb.c: netbsd-7-nhusb
sys/arch/arm/ep93xx/epohci.c: netbsd-7-nhusb
sys/arch/arm/gemini/obio_ehci.c: netbsd-7-nhusb
sys/arch/arm/imx/files.imx23: netbsd-7-nhusb
sys/arch/arm/imx/imxusb.c: netbsd-7-nhusb
sys/arch/arm/imx/imxusbreg.h: netbsd-7-nhusb
sys/arch/arm/omap/obio_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/omap3_ehci.c: netbsd-7-nhusb
sys/arch/arm/omap/omapl1x_ohci.c: netbsd-7-nhusb
sys/arch/arm/omap/tiotg.c: netbsd-7-nhusb
sys/arch/arm/s3c2xx0/ohci_s3c24x0.c: netbsd-7-nhusb
sys/arch/arm/samsung/exynos_usb.c: netbsd-7-nhusb
sys/arch/arm/xscale/pxa2x0_ohci.c: netbsd-7-nhusb
sys/arch/arm/zynq/zynq_usb.c: netbsd-7-nhusb
sys/arch/hpcarm/dev/nbp_slhci.c: netbsd-7-nhusb
sys/arch/hpcmips/dev/plumohci.c: netbsd-7-nhusb
sys/arch/i386/conf/ALL: netbsd-7-nhusb
sys/arch/i386/conf/GENERIC: netbsd-7-nhusb
sys/arch/i386/pci/gcscehci.c: netbsd-7-nhusb
sys/arch/luna68k/conf/GENERIC: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahci.c: netbsd-7-nhusb
sys/arch/mips/adm5120/dev/ahcivar.h: netbsd-7-nhusb
sys/arch/mips/alchemy/dev/ohci_aubus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ehci_arbus.c: netbsd-7-nhusb
sys/arch/mips/atheros/dev/ohci_arbus.c: netbsd-7-nhusb
sys/arch/mips/conf/files.adm5120: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ehci.c: netbsd-7-nhusb
sys/arch/mips/ralink/ralink_ohci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ehci.c: netbsd-7-nhusb
sys/arch/mips/rmi/rmixl_ohci.c: netbsd-7-nhusb
sys/arch/playstation2/dev/ohci_sbus.c: netbsd-7-nhusb
sys/arch/powerpc/booke/dev/pq3ehci.c: netbsd-7-nhusb
sys/arch/powerpc/ibm4xx/dev/dwctwo_plb.c: netbsd-7-nhusb
sys/arch/x68k/dev/slhci_intio.c: netbsd-7-nhusb
sys/conf/files: netbsd-7-nhusb
sys/dev/cardbus/ehci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/ohci_cardbus.c: netbsd-7-nhusb
sys/dev/cardbus/uhci_cardbus.c: netbsd-7-nhusb
sys/dev/ic/sl811hs.c: netbsd-7-nhusb
sys/dev/ic/sl811hsvar.h: netbsd-7-nhusb
sys/dev/isa/slhci_isa.c: netbsd-7-nhusb
sys/dev/marvell/ehci_mv.c: netbsd-7-nhusb
sys/dev/pci/ehci_pci.c: netbsd-7-nhusb
sys/dev/pci/ohci_pci.c: netbsd-7-nhusb
sys/dev/pci/uhci_pci.c: netbsd-7-nhusb
sys/dev/pci/xhci_pci.c: netbsd-7-nhusb
sys/dev/pcmcia/slhci_pcmcia.c: netbsd-7-nhusb
sys/dev/usb/Makefile.usbdevs: netbsd-7-nhusb
sys/dev/usb/TODO: netbsd-7-nhusb
sys/dev/usb/TODO.usbmp: netbsd-7-nhusb
sys/dev/usb/aubtfwl.c: netbsd-7-nhusb
sys/dev/usb/auvitek.c: netbsd-7-nhusb
sys/dev/usb/auvitek_audio.c: netbsd-7-nhusb
sys/dev/usb/auvitek_dtv.c: netbsd-7-nhusb
sys/dev/usb/auvitek_i2c.c: netbsd-7-nhusb
sys/dev/usb/auvitek_video.c: netbsd-7-nhusb
sys/dev/usb/auvitekvar.h: netbsd-7-nhusb
sys/dev/usb/ehci.c: netbsd-7-nhusb
sys/dev/usb/ehcireg.h: netbsd-7-nhusb
sys/dev/usb/ehcivar.h: netbsd-7-nhusb
sys/dev/usb/emdtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_dtv.c: netbsd-7-nhusb
sys/dev/usb/emdtv_ir.c: netbsd-7-nhusb
sys/dev/usb/emdtvvar.h: netbsd-7-nhusb
sys/dev/usb/ezload.c: netbsd-7-nhusb
sys/dev/usb/ezload.h: netbsd-7-nhusb
sys/dev/usb/files.usb: netbsd-7-nhusb
sys/dev/usb/hid.c: netbsd-7-nhusb
sys/dev/usb/hid.h: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.c: netbsd-7-nhusb
sys/dev/usb/if_athn_usb.h: netbsd-7-nhusb
sys/dev/usb/if_atu.c: netbsd-7-nhusb
sys/dev/usb/if_atureg.h: netbsd-7-nhusb
sys/dev/usb/if_aue.c: netbsd-7-nhusb
sys/dev/usb/if_auereg.h: netbsd-7-nhusb
sys/dev/usb/if_axe.c: netbsd-7-nhusb
sys/dev/usb/if_axen.c: netbsd-7-nhusb
sys/dev/usb/if_axenreg.h: netbsd-7-nhusb
sys/dev/usb/if_axereg.h: netbsd-7-nhusb
sys/dev/usb/if_cdce.c: netbsd-7-nhusb
sys/dev/usb/if_cdcereg.h: netbsd-7-nhusb
sys/dev/usb/if_cue.c: netbsd-7-nhusb
sys/dev/usb/if_cuereg.h: netbsd-7-nhusb
sys/dev/usb/if_kue.c: netbsd-7-nhusb
sys/dev/usb/if_kuereg.h: netbsd-7-nhusb
sys/dev/usb/if_otus.c: netbsd-7-nhusb
sys/dev/usb/if_otusvar.h: netbsd-7-nhusb
sys/dev/usb/if_rum.c: netbsd-7-nhusb
sys/dev/usb/if_rumreg.h: netbsd-7-nhusb
sys/dev/usb/if_rumvar.h: netbsd-7-nhusb
sys/dev/usb/if_run.c: netbsd-7-nhusb
sys/dev/usb/if_runvar.h: netbsd-7-nhusb
sys/dev/usb/if_smsc.c: netbsd-7-nhusb
sys/dev/usb/if_smscreg.h: netbsd-7-nhusb
sys/dev/usb/if_smscvar.h: netbsd-7-nhusb
sys/dev/usb/if_udav.c: netbsd-7-nhusb
sys/dev/usb/if_udavreg.h: netbsd-7-nhusb
sys/dev/usb/if_upgt.c: netbsd-7-nhusb
sys/dev/usb/if_upgtvar.h: netbsd-7-nhusb
sys/dev/usb/if_upl.c: netbsd-7-nhusb
sys/dev/usb/if_ural.c: netbsd-7-nhusb
sys/dev/usb/if_uralreg.h: netbsd-7-nhusb
sys/dev/usb/if_uralvar.h: netbsd-7-nhusb
sys/dev/usb/if_url.c: netbsd-7-nhusb
sys/dev/usb/if_urlreg.h: netbsd-7-nhusb
sys/dev/usb/if_urndis.c: netbsd-7-nhusb
sys/dev/usb/if_urndisreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtw.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn.c: netbsd-7-nhusb
sys/dev/usb/if_urtwn_data.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnreg.h: netbsd-7-nhusb
sys/dev/usb/if_urtwnvar.h: netbsd-7-nhusb
sys/dev/usb/if_urtwreg.h: netbsd-7-nhusb
sys/dev/usb/if_zyd.c: netbsd-7-nhusb
sys/dev/usb/if_zydreg.h: netbsd-7-nhusb
sys/dev/usb/irmce.c: netbsd-7-nhusb
sys/dev/usb/moscom.c: netbsd-7-nhusb
sys/dev/usb/motg.c: netbsd-7-nhusb
sys/dev/usb/motgvar.h: netbsd-7-nhusb
sys/dev/usb/ohci.c: netbsd-7-nhusb
sys/dev/usb/ohcireg.h: netbsd-7-nhusb
sys/dev/usb/ohcivar.h: netbsd-7-nhusb
sys/dev/usb/pseye.c: netbsd-7-nhusb
sys/dev/usb/slurm.c: netbsd-7-nhusb
sys/dev/usb/stuirda.c: netbsd-7-nhusb
sys/dev/usb/u3g.c: netbsd-7-nhusb
sys/dev/usb/uark.c: netbsd-7-nhusb
sys/dev/usb/uatp.c: netbsd-7-nhusb
sys/dev/usb/uaudio.c: netbsd-7-nhusb
sys/dev/usb/uberry.c: netbsd-7-nhusb
sys/dev/usb/ubsa.c: netbsd-7-nhusb
sys/dev/usb/ubsa_common.c: netbsd-7-nhusb
sys/dev/usb/ubsavar.h: netbsd-7-nhusb
sys/dev/usb/ubt.c: netbsd-7-nhusb
sys/dev/usb/uchcom.c: netbsd-7-nhusb
sys/dev/usb/ucom.c: netbsd-7-nhusb
sys/dev/usb/ucomvar.h: netbsd-7-nhusb
sys/dev/usb/ucycom.c: netbsd-7-nhusb
sys/dev/usb/udl.c: netbsd-7-nhusb
sys/dev/usb/udl.h: netbsd-7-nhusb
sys/dev/usb/udsbr.c: netbsd-7-nhusb
sys/dev/usb/udsir.c: netbsd-7-nhusb
sys/dev/usb/uep.c: netbsd-7-nhusb
sys/dev/usb/uftdi.c: netbsd-7-nhusb
sys/dev/usb/uftdireg.h: netbsd-7-nhusb
sys/dev/usb/ugen.c: netbsd-7-nhusb
sys/dev/usb/ugensa.c: netbsd-7-nhusb
sys/dev/usb/uhci.c: netbsd-7-nhusb
sys/dev/usb/uhcireg.h: netbsd-7-nhusb
sys/dev/usb/uhcivar.h: netbsd-7-nhusb
sys/dev/usb/uhid.c: netbsd-7-nhusb
sys/dev/usb/uhidev.c: netbsd-7-nhusb
sys/dev/usb/uhidev.h: netbsd-7-nhusb
sys/dev/usb/uhmodem.c: netbsd-7-nhusb
sys/dev/usb/uhso.c: netbsd-7-nhusb
sys/dev/usb/uhub.c: netbsd-7-nhusb
sys/dev/usb/uipad.c: netbsd-7-nhusb
sys/dev/usb/uipaq.c: netbsd-7-nhusb
sys/dev/usb/uirda.c: netbsd-7-nhusb
sys/dev/usb/uirdavar.h: netbsd-7-nhusb
sys/dev/usb/ukbd.c: netbsd-7-nhusb
sys/dev/usb/ukbdmap.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.c: netbsd-7-nhusb
sys/dev/usb/ukyopon.h: netbsd-7-nhusb
sys/dev/usb/ulpt.c: netbsd-7-nhusb
sys/dev/usb/umass.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.c: netbsd-7-nhusb
sys/dev/usb/umass_isdata.h: netbsd-7-nhusb
sys/dev/usb/umass_quirks.c: netbsd-7-nhusb
sys/dev/usb/umass_quirks.h: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.c: netbsd-7-nhusb
sys/dev/usb/umass_scsipi.h: netbsd-7-nhusb
sys/dev/usb/umassvar.h: netbsd-7-nhusb
sys/dev/usb/umcs.c: netbsd-7-nhusb
sys/dev/usb/umct.c: netbsd-7-nhusb
sys/dev/usb/umidi.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.c: netbsd-7-nhusb
sys/dev/usb/umidi_quirks.h: netbsd-7-nhusb
sys/dev/usb/umodem.c: netbsd-7-nhusb
sys/dev/usb/umodem_common.c: netbsd-7-nhusb
sys/dev/usb/umodemvar.h: netbsd-7-nhusb
sys/dev/usb/ums.c: netbsd-7-nhusb
sys/dev/usb/uplcom.c: netbsd-7-nhusb
sys/dev/usb/urio.c: netbsd-7-nhusb
sys/dev/usb/urio.h: netbsd-7-nhusb
sys/dev/usb/usb.c: netbsd-7-nhusb
sys/dev/usb/usb.h: netbsd-7-nhusb
sys/dev/usb/usb_mem.c: netbsd-7-nhusb
sys/dev/usb/usb_mem.h: netbsd-7-nhusb
sys/dev/usb/usb_quirks.c: netbsd-7-nhusb
sys/dev/usb/usb_quirks.h: netbsd-7-nhusb
sys/dev/usb/usb_subr.c: netbsd-7-nhusb
sys/dev/usb/usbdevices.config: netbsd-7-nhusb
sys/dev/usb/usbdevs: netbsd-7-nhusb
sys/dev/usb/usbdevs.h: netbsd-7-nhusb
sys/dev/usb/usbdevs_data.h: netbsd-7-nhusb
sys/dev/usb/usbdi.c: netbsd-7-nhusb
sys/dev/usb/usbdi.h: netbsd-7-nhusb
sys/dev/usb/usbdi_util.c: netbsd-7-nhusb
sys/dev/usb/usbdi_util.h: netbsd-7-nhusb
sys/dev/usb/usbdivar.h: netbsd-7-nhusb
sys/dev/usb/usbhid.h: netbsd-7-nhusb
sys/dev/usb/usbhist.h: netbsd-7-nhusb
sys/dev/usb/usbroothub.c: netbsd-7-nhusb
sys/dev/usb/usbroothub.h: netbsd-7-nhusb
sys/dev/usb/usbroothub_subr.c: delete
sys/dev/usb/usbroothub_subr.h: delete
sys/dev/usb/uscanner.c: netbsd-7-nhusb
sys/dev/usb/uslsa.c: netbsd-7-nhusb
sys/dev/usb/usscanner.c: netbsd-7-nhusb
sys/dev/usb/ustir.c: netbsd-7-nhusb
sys/dev/usb/uthum.c: netbsd-7-nhusb
sys/dev/usb/utoppy.c: netbsd-7-nhusb
sys/dev/usb/uts.c: netbsd-7-nhusb
sys/dev/usb/uvideo.c: netbsd-7-nhusb
sys/dev/usb/uvisor.c: netbsd-7-nhusb
sys/dev/usb/uvscom.c: netbsd-7-nhusb
sys/dev/usb/uyap.c: netbsd-7-nhusb
sys/dev/usb/uyap_firmware.h: netbsd-7-nhusb
sys/dev/usb/uyurex.c: netbsd-7-nhusb
sys/dev/usb/x1input_rdesc.h: netbsd-7-nhusb
sys/dev/usb/xhci.c: netbsd-7-nhusb
sys/dev/usb/xhcireg.h: netbsd-7-nhusb
sys/dev/usb/xhcivar.h: netbsd-7-nhusb
sys/dev/usb/xinput_rdesc.h: netbsd-7-nhusb
sys/external/bsd/common/conf/files.linux: netbsd-7-nhusb
sys/external/bsd/common/include/linux/err.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/kernel.h: netbsd-7-nhusb
sys/external/bsd/common/include/linux/workqueue.h: netbsd-7-nhusb
sys/external/bsd/common/linux/linux_work.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/atombios_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/dist/drm/radeon/radeon_legacy_encoders.c: netbsd-7-nhusb
sys/external/bsd/drm2/drm/files.drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/i915drm/files.i915drmkms: netbsd-7-nhusb
sys/external/bsd/drm2/include/linux/err.h: delete
sys/external/bsd/drm2/include/linux/workqueue.h: delete
sys/external/bsd/drm2/linux/files.drmkms_linux: netbsd-7-nhusb
sys/external/bsd/drm2/linux/linux_work.c: delete
sys/external/bsd/dwc2/dwc2.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwc2var.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dwctwo2netbsd: netbsd-7-nhusb
sys/external/bsd/dwc2/conf/files.dwc2: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_core.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_coreintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcd.h: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdddma.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdintr.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hcdqueue.c: netbsd-7-nhusb
sys/external/bsd/dwc2/dist/dwc2_hw.h: netbsd-7-nhusb
sys/modules/drmkms_linux/Makefile: netbsd-7-nhusb
sys/modules/i915drmkms/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libugenhc/ugenhc.c: netbsd-7-nhusb
sys/rump/dev/lib/libusb/Makefile: netbsd-7-nhusb
sys/rump/dev/lib/libusb/USB.ioconf: netbsd-7-nhusb
sys/rump/dev/lib/libusb/usb_at_ugenhc.c: delete
sys/rump/dev/lib/libusb/opt/opt_usb.h: delete
sys/rump/dev/lib/libusb/opt/opt_usbverbose.h: delete
sys/sys/mbuf.h: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.8: netbsd-7-nhusb
usr.sbin/usbdevs/usbdevs.c: netbsd-7-nhusb
Merge netbsd-7-nhusb:
- API / infrastructure changes to support memory management changes.
- Memory management improvements and bug fixes.
- HCDs should now be MP safe
- conversion to KERNHIST based debug
- FS/LS isoc support on ehci(4).
- conversion to kmem(9)
- Some USB 3 support - mostly from Takahiro HAYASHI (t-hash).
- interrupt transfers now get proper DMA operations
- general bug fixes
- kern/48308
- uhub status notification improvements
- umass(4) probe fix (applied to HEAD already)
- ohci(4) short transfer fix
- Change the SOFTINT level from NET to SERIAL for the USB softint handler.
This gives the callback a chance of running when another softint handler
at SOFTINT_NET has blocked holding a lock, e.g. softnet_lock and most of
the network stack.
- kern/49065 - ifconfig tun0 ... sequence locks up system / lockup:
softnet_lock held across usb xfr
- kern/50491 - unkillable wait in usbd_transfer while using usmsc0
on raspberry pi 2
- kern/51395 - USB Ethernet makes xhci hang
- Various improvements to slhci(4)
- Various improvements to dwc2(4)
 1.2.6.2 22-May-2014  yamt sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs. ("Protocol error: too many arguments")
 1.2.6.1 25-Sep-2013  yamt file dwc2_hw.h was added on branch yamt-pagecache on 2014-05-22 11:40:56 +0000
 1.2.4.2 18-May-2014  rmind sync with head
 1.2.4.1 25-Sep-2013  rmind file dwc2_hw.h was added on branch rmind-smpnet on 2014-05-18 17:46:02 +0000

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