From upstream, fixes issues with isochronous transfers.

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@

Trailing whitespace

Merge conflicts

kern/50185: dwctwo attach failure

Another hunk went walkabout during the import - reapply with a little
update

Re-apply hunk that got lost in the recent import. CVS is fun!

Merge conflicts

Support external DMA mode and provide an interface for DMA address configuration

branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10; 1.6.12; 1.6.16;
Merge conflicts.

Fix non-USB_DEBUG (and non-DWC2_DEBUG) build

Merge conflicts.

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

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.

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@

Merge conflicts

Merge conflicts

branches: 1.5.4; 1.5.6; 1.5.8; 1.5.10; 1.5.12; 1.5.16;
Merge conflicts.

Merge conflicts.

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

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@

Merge conflicts

Merge conflicts

branches: 1.8.4; 1.8.6; 1.8.8; 1.8.10; 1.8.12; 1.8.16;
Fix non-DWC2_DEBUG build.

Merge conflicts.

Fix non-USB_DEBUG (and non-DWC2_DEBUG) build

Merge conflicts.

Use the hsotg->lock spin lock solely

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

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.

Tidy up more error handling confusion

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.

Fix error path, kmem_free doesn't allow NULL pointers.
Fix compilation with CONFIG_USB_DWC2_TRACK_MISSED_SOFS.

Fix fallout from linux/gfp.h -> common.

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.

Fix the alignment argument to usb_allocmem in dwc2_hc_setup_align_buf

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@

Merge conflicts

Report an error when return -ENODEV for the unsupported setup.

Merge conflicts

branches: 1.15.2;
Simplify the NAK holdoff change.

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

branches: 1.13.2; 1.13.4;
Trailing whitespace.

branches: 1.12.2; 1.12.4; 1.12.6;
Merge conflicts.

Fix non-USB_DEBUG (and non-DWC2_DEBUG) build

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.

Resolve conflicts.

Simplify variable assignment and avoid gcc warnings.

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).

Merge conflicts.

Some core configurations cannot support LS traffic on a FS root port.

Fix adapted from the github.com/raspberrypi driver.

Tidyup dwc2_host_is_b_hnp_enabled

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

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.

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

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@

Merge conflicts

Fix DWC2_READ_4 in dwc2_sample_frrem which is unused

Merge conflicts

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

branches: 1.8.4; 1.8.6; 1.8.8; 1.8.10;
Merge conflicts.

Make CONFIG_USB_DWC2_DEBUG_PERIODIC compile.

Merge conflicts.

First pass at isoc transfer support - seems to work. More testing
required.

Tidyup dwc2_host_is_b_hnp_enabled

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

From upstream, fixes issues with isochronous transfers.

branches: 1.11.6;
dwc2: KASSERT(A && B) -> KASSERT(A); KASSERT(B)

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.

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.

branches: 1.8.18;
Trailing whitespace

Merge conflicts

branches: 1.6.4; 1.6.6; 1.6.8; 1.6.10; 1.6.12; 1.6.16;
Merge conflicts.

Remove unused variables.

Merge conflicts.

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

From upstream, fixes issues with isochronous transfers.

branches: 1.15.36;
Fixup previous to not break ping protocol. My bad.

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.

branches: 1.13.10; 1.13.16; 1.13.18;
Merge conflicts

Merge conflicts

branches: 1.11.2;
Simplify the NAK holdoff change.

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

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)

branches: 1.8.2; 1.8.4; 1.8.6;
Merge conflicts.

Fix non-USB_DEBUG (and non-DWC2_DEBUG) build

Resolve conflicts.

Merge conflicts.

Use the hsotg->lock spin lock solely

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

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.

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.

branches: 1.14.10; 1.14.16; 1.14.18;
Merge conflicts

Fix build.

Merge conflicts

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

branches: 1.10.2; 1.10.4;
Trailing whitespace.

branches: 1.9.2; 1.9.4; 1.9.6;
Merge conflicts.

Fix non-USB_DEBUG (and non-DWC2_DEBUG) build

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.

Resolve conflicts.

Remove unused variable.

Merge conflicts.

Resolve conflicts

Adapt the Synopsys DWC2 driver to NetBSD.

Still work-in-progress

branches: 1.1.1;
Initial revision

Merge conflicts

Merge conflicts

branches: 1.2.4; 1.2.6; 1.2.8; 1.2.10; 1.2.12; 1.2.16;
Resolve conflicts

branches: 1.1.1;
Initial revision