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

Put the kernelside rump kernel headers into <rump-sys> instead of
sprinkling them around the faction directories. Avoids having
to add a CPPFLAGS (or several) to pretty much every component
Makefile.

Leave compat headers around in the old locations.

The commit changes some autogenerated files, but I'll fix the
generators shortly and regen.

Use IOCONF #define to determine component name.

Avoids having to manually retype info already in .ioconf.

Also, COMPONENT_SIMPLE -> RUMP_COMPONENT=simple. That way, we can add
other attributes where necessary. As "future directions", the "ioconf"
attribute for RUMP_COMPONENT can just be removed when a driver is
converted to modular and has a proper modcmd.

Make it easier to create rump kernel components, part 1.

Reduce copypasteware for the component constructors. If a constructor
calls only config_init_component(), handle it from a common source file
instead of copying the same(ish) file around to every component.

Add a COMMENT describing what each component roughly does.

"make describe" prints the comment.

Requested/inspired by Vincent Schwarzer on rumpkernel-users

Fully build ugenhc only on archs where libusb is built.

branches: 1.8.6;
rename rumpcomp_user.* -> ugenhc_user.*

Move the bus_dma implementation that works only with ugenhc into the
ugenhc component itself.

branches: 1.6.4;
problem with ioconf.c solved, reenable

duh, the untypoed version doesn't work with bsd.ioconf.mk. comment it
out while i figure it out

typo

The ioctl hypercall is used only by the usb host controller driver,
so make it exclusive to that component. I'm happy to see it gone.

branches: 1.2.2; 1.2.6; 1.2.14; 1.2.24;
Use config pseudo-root keyword instead of monolithic configurations
starting from root.

Move a bunch of rump components from dev/wip to dev/lib now that
they've reached a certain maturity.

branches: 1.1.2; 1.1.6;
Use config pseudo-root keyword instead of monolithic configurations
starting from root.

rename rumpcomp_user.* -> ugenhc_user.*

Some systems provide ioctl() via unistd.h
(not that this is going to work there, but at least we don't
get unnecessary compiler warnings)

branches: 1.5.4; 1.5.6;
Translate error codes between the hypervisor and rump kernel.

Make hypercall calling conventions consistent: iff a hypercall can fail,
it returns an int containing the error value.

don't compile the for kernel

need errno

The ioctl hypercall is used only by the usb host controller driver,
so make it exclusive to that component. I'm happy to see it gone.

rename rumpcomp_user.* -> ugenhc_user.*

branches: 1.1.4; 1.1.6;
The ioctl hypercall is used only by the usb host controller driver,
so make it exclusive to that component. I'm happy to see it gone.

Remove shlib_version files and just use Makefile SHLIB_MAJOR/MINOR,
with the default provided by Makefile.rump (they're all 0.0 anyway)

branches: 1.1.2; 1.1.6; 1.1.24; 1.1.42;
Move a bunch of rump components from dev/wip to dev/lib now that
they've reached a certain maturity.

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.

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.

Merge thorpej-cfargs2.

branches: 1.28.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.27.14;
Rename min/max -> uimin/uimax for better honesty.

These functions are defined on unsigned int. The generic name
min/max should not silently truncate to 32 bits on 64-bit systems.
This is purely a name change -- no functional change intended.

HOWEVER! Some subsystems have

#define min(a, b) ((a) < (b) ? (a) : (b))
#define max(a, b) ((a) > (b) ? (a) : (b))

even though our standard name for that is MIN/MAX. Although these
may invite multiple evaluation bugs, these do _not_ cause integer
truncation.

To avoid `fixing' these cases, I first changed the name in libkern,
and then compile-tested every file where min/max occurred in order to
confirm that it failed -- and thus confirm that nothing shadowed
min/max -- before changing it.

I have left a handful of bootloaders that are too annoying to
compile-test, and some dead code:

cobalt ews4800mips hp300 hppa ia64 luna68k vax
acorn32/if_ie.c (not included in any kernels)
macppc/if_gm.c (superseded by gem(4))

It should be easy to fix the fallout once identified -- this way of
doing things fails safe, and the goal here, after all, is to _avoid_
silent integer truncations, not introduce them.

Maybe one day we can reintroduce min/max as type-generic things that
never silently truncate. But we should avoid doing that for a while,
so that existing code has a chance to be detected by the compiler for
conversion to uimin/uimax without changing the semantics until we can
properly audit it all. (Who knows, maybe in some cases integer
truncation is actually intended!)

branches: 1.26.10; 1.26.12;
Fix bulk xfer buffer with usedma = false.

Fix order of outputs in rumpuser_open call.

Now ugenhc works again after a four-year hiatus...

branches: 1.24.2; 1.24.4;
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

Put the kernelside rump kernel headers into <rump-sys> instead of
sprinkling them around the faction directories. Avoids having
to add a CPPFLAGS (or several) to pretty much every component
Makefile.

Leave compat headers around in the old locations.

The commit changes some autogenerated files, but I'll fix the
generators shortly and regen.

branches: 1.22.2; 1.22.4; 1.22.8;
Fix error checking mistake introduced in r1.15.

Hi Antti!

First pass at adapting to usbmp.

Let's believe the spec when it says "must".

Return a valid error in rumpusb_root_intr_start on failure.

branches: 1.18.2;
kill sprintf

rename rumpcomp_user.* -> ugenhc_user.*

GC rumpusb_device_intr_methods.

branches: 1.15.4;
Make hypercall calling conventions consistent: iff a hypercall can fail,
it returns an int containing the error value.

Reduce hypercalls related to reading to essentially an amalgamation
of readv and preadv. ditto for writing. Hypercalls are so seldomly
used that it doesn't justify 3x the calls for syntactic sugar.

The ioctl hypercall is used only by the usb host controller driver,
so make it exclusive to that component. I'm happy to see it gone.

split device_t/softc for all remaining drivers.
replace "struct device *" with "device_t".
use device_xname(), device_unit(), etc.

Do not assume that O_FOO flags have matching values in the rump kernel
and hypervisor.

branches: 1.10.2;
merge the jmcneill-usbmp branch. many thanks to jared for the
initial work, and every one else who has tested things for me.
this is largely my fault at this point :-)

the main changes are something like:

- usbd_bus_methods{} gains a get_lock() to enable the
host controller to provide a lock for the USB code.
if the lock isn't provided, old-style protection is
(partially) applied.

- ehci/ohci/uhci have been converted to the new
interfaces, including mutex/cv/etc conversion.

- usbdivar.h contains a discussion about locking and
what locks are held for which method calls. more
to come for usbdi(9) here.

- audio drivers (uaudio, umidi, auvitek) have been
properly SMPified now that USB is ready.

- scsi drivers have been modified to take the kernel
lock explicitly before calling into scsi code.

- usb pipes are associated with a lock, that is the
same as the controller lock. (this could be split
up further in the future.)

- several usbfoo_locked() or usbfoo_unlocked()
functions have been added to the usbdi(9) to
enable functionality with or without the USB
lock (per controller) already being held.

the TODO.usbmp file has specific details on what is left to
do, including what device-specific changes should be done now
that the whole framework is ready.

branches: 1.9.2; 1.9.10; 1.9.14;
* support isochronous transfers (for as much as they can be supported
considering our ugen driver doesn't support isochronous write.
kern/25960 seems to contain a patch and could be investigated for that)
* add a dirty rotten hack which makes interrupt transfers of >16
work for me

branches: 1.8.2; 1.8.4;
* abort correct endpoint in bulk xfers
* actually free memory in the freem method (well, usually stick
it to the usb freelist, but same thing)

* get UDESC_CONFIG for proper config index
* support UR_SET_CONFIG for root hub
* set port change bits for root hub interrupts
+ cosmetics

Fix snafu with error reporting in bulk transfers.

Don't leak control endpoint descriptors.

Actually, detach is possible enough if the device isn't in use.
So just support it.

Change match to be based on the existence of the ugen device node
and signal the root hub interrupt only once we are succesfully able
to open the device node. This makes it possible to insert a device
after the rump kernel was booted and have it succesfully attach
(does not make detach possible yet, though, as there are some
ugen and host kernel uhci/ohci/ehci evil crashies with that).

XXX: optimally, match would fail if there is a permanent error in
opening. However, it is difficult to figure out the difference
between the device backing ugen not being present, a transient
error in opening and a permanent error in opening. For example,
which of the latter two would EPERM be? And, ugen returns ENXIO
if the device is not present, but how would be know that's really
the case and not some other ENXIO from elsewhere in the stack?

* allow one more request
* print warning if a request which might fail, fails
* report error from bulk transfers

Move a bunch of rump components from dev/wip to dev/lib now that
they've reached a certain maturity.

Make it easier to create rump kernel components, part 1.

Reduce copypasteware for the component constructors. If a constructor
calls only config_init_component(), handle it from a common source file
instead of copying the same(ish) file around to every component.

branches: 1.3.2; 1.3.20; 1.3.38;
Catch up with cosmetic changes to output from config(1)

use config_init_component()

branches: 1.1.2; 1.1.4;
Use config pseudo-root keyword instead of monolithic configurations
starting from root.

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

Note in comment why this "d"ma implementation is not in libusb.

branches: 1.1.4; 1.1.6; 1.1.10; 1.1.12;
Move the bus_dma implementation that works only with ugenhc into the
ugenhc component itself.

Protect __KERNEL_RCSID. It isn't available when compile rumpkernels under e.g. Linux.

Merge the [pgoyette-compat] branch

Add missing RCSIDs.

branches: 1.1.4; 1.1.6; 1.1.10; 1.1.34; 1.1.36;
rename rumpcomp_user.* -> ugenhc_user.*

branches: 1.1.4; 1.1.6; 1.1.10;
rename rumpcomp_user.* -> ugenhc_user.*