Copy stable/9 to releng/9.3 as part of the 9.3-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

MFC r261977:

In sys/dev/usb/controller/musb_otg.c, fix a warning about musbotg_odevd
being unused, by adding it to the part that handles getting descriptors.

Reviewed by: hselasky

MFC r252912, r254828 and r256548:
Add host mode support to the Mentor Graphics USB OTG controller driver.

PR: usb/181987

MFC r241082:
Inherit USB mode from RootHUB port where the USB device is connected.
Only RootHUB ports can be dual mode. Disallow OTG ports on external HUBs.
This simplifies some checks in the USB controller drivers.

MFC: r227309 (partial)

Mark all SYSCTL_NODEs static that have no corresponding SYSCTL_DECLs.

The SYSCTL_NODE macro defines a list that stores all child-elements of
that node. If there's no SYSCTL_DECL macro anywhere else, there's no
reason why it shouldn't be static.

MFC r233774:
Fix compiler warnings, mostly signed issues,
when USB modules are compiled with WARNS=9.

MFC r229086, r228483 and r228640:
Implement better support for USB controller suspend and resume.
Fix some build issues in avr32dci.c

Copy head to stable/9 as part of 9.0-RELEASE release cycle.

Approved by: re (implicit)

Remove unneeded includes of <sys/linker_set.h>. Other headers that use
it internally contain nested includes.

Reviewed by: bde

Correct some root HUB descriptor fields in multiple controller drivers.
Remove an unused structure.

Approved by: thompsa (mentor)

Remove extraneous semicolons, no functional changes.

Submitted by: Marc Balmer <marc@msys.ch>
MFC after: 1 week

Remove overuse of exclamation marks in kernel printfs, there mere fact a
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already prints the funtion name and a
unique message.

Correct register access for USB device side operation on the musb controller.

Submitted by: Hans Petter Selasky

Initialise variable before use.

Submitted by: Hans Petter Selasky

Purge mergeinfo from files that were temporarily renamed while USB2 was
imported into the tree alongside USB.

Approved by: re (mergeinfo blanket)

USB CORE:
- Add minimum polling support to drive UMASS
and UKBD in case of panic.
- Add extra check to ukbd probe to fix problem about
mouse devices attaching like keyboards.
- P4 ID: 166148

Submitted by: hps
Approved by: re

Sync to p4

- Add support for devices that handle set and clear stall in hardware.
- Add missing get timestamp function
- Add more xfer flags

Submitted by: Hans Petter Selasky
Approved by: re (kib)

- Make struct usb_xfer opaque so that drivers can not access the internals
- Reduce the number of headers needed for a usb driver, the common case is just usb.h and usbdi.h

s/usb2_/usb_|usbd_/ on all function names for the USB stack.

Rename usb pipes to endpoints as it better represents what they are, and struct
usb_pipe may be used for a different purpose later on.

s/usb2_/usb_/ on all typedefs for the USB stack.

s/usb2_/usb_/ on all C structs for the USB stack.

Improve device mode (gadget) stall handling.

Some hardware easily comes out of sync with regard to whether the current or
the next control transfer should be stalled, if a stall command is always
issued before receiving the SETUP packet. After this patch the stall command
will only be issued when a transfer should actually be stalled.

Submitted by: Hans Petter Selasky

Rename the usb sysctl tree from hw.usb2.* back to hw.usb.*.

Submitted by: Hans Petter Selasky

- rename usb2_mode to usb_mode [1]
- change variable types to use the enum

Submitted by: Hans Petter Selasky [1]

MFp4 //depot/projects/usb@160930

Change the roothub exec functions to take the usb request and data pointers
directly rather than placing them on the parent bus struct.

Submitted by: Hans Petter Selasky

Remove usb_sw_transfer.[ch] which are now empty after r190735.

Provide a better commit log for r190735, forced by making a whitespace change.

Refactor how we interface with the root HUB. This is achieved by making a
direct call from usb2_do_request to the host controller for root hub requests,
this call will perform the controller specific register read/writes and return
the error code.

This cuts out a lot of code in the host controller files and saves one thread
per USB bus.

Submitted by: Hans Petter Selasky

Remove pointeless mergeinfo that crept in from r190633.

MFp4 //depot/projects/usb@159946

Some cancelable flags are always true. Substitute these away. These cancelable
flags were mostly useful with the root HUB which is now handled differently.

Submitted by: Hans Petter Selasky

MFp4 //depot/projects/usb@159922

Refactor how we interface with the root HUB. This cuts around 1200 lines of
code totally and saves one thread per USB bus.

Submitted by: Hans Petter Selasky

MFp4 //depot/projects/usb@159674

Fix more corner cases around reception of SETUP packets.

Submitted by: Hans Petter Selasky

MFp4 //depot/projects/usb@159673

Fix a corner case around stalling SETUP packets in device side mode.

Submitted by: Hans Petter Selasky

Implement an ipfw action to reassemble ip packets: reass.

Integrate user/mav/ata branch:

Add ch_suspend/ch_resume methods for PCI controllers and implement them
for AHCI. Refactor AHCI channel initialization according to it.

Fix Port Multipliers operation. It is far from perfect yet, but works now.
Tested with JMicron JMB363 AHCI + SiI 3726 PMP pair.
Previous version was also tested with SiI 4726 PMP.

Hardware sponsored by: Vitsch Electronics / VEHosting.nl

MFp4 //depot/projects/usb @159479,159502,159516,159522,159529

Workaround for buggy USB hardware not handling new SETUP packet before STATUS
stage is complete, this allows xfers to endpoint0 to return a short frame.

Submitted by: Hans Petter Selasky
Reported by: me

MFp4 //depot/projects/usb@159392

Add ifdefs for making parts of usb conditional.

Submitted by: Hans Petter Selasky

MFp4 //depot/projects/usb @159430

- Move tunable defines into usb_core.h and dependancy towards usb_defs.h
- Leave hardcoded defines in "usb_defs.h".
- Allow overriding all tunable defines.
- Add more customisable typedefs.
- Correct maximum device number.

Submitted by: Hans Petter Selasky

MFp4 //depot/projects/usb@157853

Clean up old way of polling the USB hardware. The existing polling support was
a bit hackish.

Submitted by: Hans Petter Selasky

Move the new USB stack into its new home.

MFp4 //depot/projects/usb; 157069,157296,157375,157384,157430

- Change "usb2_pause_mtx" so that it takes the timeout value in ticks
- USB controller: EHCI High Speed Interrupt endpoint fix.
- Fix OHCI and EHCI counting bug when multiple TD's are involved in
a short USB transfer and a short packet happens on the non-last TD in the
USB transfer frame.
- USB process naming cleanup.

Submitted by: Hans Petter Selasky

MFp4: //depot/projects/usb@155906

Remove "vbus_interrupt" method from bus methods and use
a global function instead for the various drivers using it.
The reason for the removal is to simplify the code.

Submitted by: Hans Petter Selasky

MFp4: //depot/projects/usb@155839

This change is about removing three fields from "struct usb2_xfer"
which can be reached from "struct usb2_xfer_root" instead and cleaning
up the code after this change. The fields are "xfer->udev",
"xfer->xfer_mtx" and "xfer->usb2_sc". In this process the following
changes were also made:
Rename "usb2_root" to "xroot" which is short for "xfer root".
Rename "priv_mtx" to "xfer_mtx" in USB core.
The USB_XFER_LOCK and USB_XFER_UNLOCK macros should only be used in
the USB core due to dependency towards "xroot". Substitute macros
for the real lock in two USB device drivers.

Submitted by: Hans Petter Selasky

MFp4: //depot/projects/usb@155834

Factor out roothub process into the USB bus structure for
all USB controller drivers. Essentially I am trying to
save some processes on the root HUB and get away
from the config thread pradigm. There will be a follow up
commit where the root HUB control and interrupt callback
will be moved over to run from the roothub process.
Total win: 3 processes become 1 for every USB controller.

Submitted by: Hans Petter Selasky

Sync with usb4bsd:

src/lib/libusb20/libusb20_desc.c

Make "libusb20_desc_foreach()" more readable.

src/sys/dev/usb2/controller/*.[ch]
src/sys/dev/usb2/core/*.[ch]

Implement support for USB power save for all HC's.

Implement support for Big-endian EHCI.

Move Huawei quirks back into "u3g" driver.

Improve device enumeration.

src/sys/dev/usb2/ethernet/*[ch]

Patches for supporting new AXE Gigabit chipset.

src/sys/dev/usb2/serial/*[ch]

Fix IOCTL return code.

src/sys/dev/usb2/wlan/*[ch]

Sync with old USB stack.

Submitted by: hps

Remove CALLOUT_RETURNUNLOCKED from the callouts, there is no reason for them to
drop the lock for us.

Remove superfluous return statements from the end of void functions.

Format and wrap function declarations.

Add missing USB_BUS_LOCK* change from r184824.

Convert the two main locking areas into macros to make it clear on what we are
grabbing and why. These are now:

USB_BUS_LOCK/USB_BUS_UNLOCK
USB_XFER_LOCK/USB_XFER_UNLOCK

Reviewed by: alfred

Bring in USB4BSD, Hans Petter Selasky rework of the USB stack
that includes significant features and SMP safety.

This commit includes a more or less complete rewrite of the *BSD USB
stack, including Host Controller and Device Controller drivers and
updating all existing USB drivers to use the new USB API:

1) A brief feature list:

- A new and mutex enabled USB API.

- Many USB drivers are now running Giant free.

- Linux USB kernel compatibility layer.

- New UGEN backend and libusb library, finally solves the "driver
unloading" problem. The new BSD licensed libusb20 library is fully
compatible with libusb-0.1.12 from sourceforge.

- New "usbconfig" utility, for easy configuration of USB.

- Full support for Split transactions, which means you can use your
full speed USB audio device on a high speed USB HUB.

- Full support for HS ISOC transactions, which makes writing drivers
for various HS webcams possible, for example.

- Full support for USB on embedded platforms, mostly cache flushing
and buffer invalidating stuff.

- Safer parsing of USB descriptors.

- Autodetect of annoying USB install disks.

- Support for USB device side mode, also called USB gadget mode,
using the same API like the USB host side. In other words the new
USB stack is symmetric with regard to host and device side.

- Support for USB transfers like I/O vectors, means more throughput
and less interrupts.

- ... see the FreeBSD quarterly status reports under "USB project"

2) To enable the driver in the default kernel build:

2.a) Remove all existing USB device options from your kernel config
file.

2.b) Add the following USB device options to your kernel configuration
file:

# USB core support
device usb2_core

# USB controller support
device usb2_controller
device usb2_controller_ehci
device usb2_controller_ohci
device usb2_controller_uhci

# USB mass storage support
device usb2_storage
device usb2_storage_mass

# USB ethernet support, requires miibus
device usb2_ethernet
device usb2_ethernet_aue
device usb2_ethernet_axe
device usb2_ethernet_cdce
device usb2_ethernet_cue
device usb2_ethernet_kue
device usb2_ethernet_rue
device usb2_ethernet_dav

# USB wireless LAN support
device usb2_wlan
device usb2_wlan_rum
device usb2_wlan_ral
device usb2_wlan_zyd

# USB serial device support
device usb2_serial
device usb2_serial_ark
device usb2_serial_bsa
device usb2_serial_bser
device usb2_serial_chcom
device usb2_serial_cycom
device usb2_serial_foma
device usb2_serial_ftdi
device usb2_serial_gensa
device usb2_serial_ipaq
device usb2_serial_lpt
device usb2_serial_mct
device usb2_serial_modem
device usb2_serial_moscom
device usb2_serial_plcom
device usb2_serial_visor
device usb2_serial_vscom

# USB bluetooth support
device usb2_bluetooth
device usb2_bluetooth_ng

# USB input device support
device usb2_input
device usb2_input_hid
device usb2_input_kbd
device usb2_input_ms

# USB sound and MIDI device support
device usb2_sound

2) To enable the driver at runtime:

2.a) Unload all existing USB modules. If USB is compiled into the
kernel then you might have to build a new kernel.

2.b) Load the "usb2_xxx.ko" modules under /boot/kernel having the same
base name like the kernel device option.

Submitted by: Hans Petter Selasky hselasky at c2i dot net
Reviewed by: imp, alfred