- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

Add support for uarts other than the serial console in TI OMAP SoCs.

The TI uart hardware is ns16550-compatible, except that before it can
be used the clocks and power have to be enabled and a non-standard
mode control register has to be set to put the device in uart mode
(as opposed to irDa or other serial protocols). This adds the extra
code in an extension to the standard ns8250 probe routine, and the
rest of the driver is just the standard ns8250 code.

Make the noop clock successfully do nothing, because doing nothing and
returning an error status (which the NULL method pointers caused) isn't
nearly as useful.

Define the uart clocks so that they can be en/disabled at runtime.

Make the standard sdhci(4) driver work for the TI OMAP family SoCs.
The MMCHS hardware is pretty much a standard SDHCI v2.0 controller with a
couple quirks, which are now supported by sdhci(4) as of r254507.

This should work for all TI SoCs that use the MMCHS hardware, but it has
only been tested on AM335x right now, so this enables it on those platforms
but leaves the existing ti_mmchs driver in place for other OMAP variants
until they can be tested.

This initial incarnation lacks DMA support (coming soon). Even without it
this improves performance pretty noticibly over the ti_mmchs driver,
primarily because it now does multiblock IO.

Let the platform calculate the timer frequency at runtime, and use that for
the omap4, instead of relying on the (wrong) value provided in the dts.

Initialisation routines for the mailbox, spinlock and PRU-ICSS clocks.

Improve a comment.

Add IDs for TPS65217C and TPS65217D

- AM335x requires updated soft-reset logic too

- Add USBSS driver for AM335x SoC. Driver is a wrapper around Mentors Graphic
USB OTG core.

Don't clear the SYSCONFIG register on boot.

This follows section 18.4.2.2 SD Soft Reset Flow in the TI AM335x Technical
Reference Manual and seems to fix the "ti_mmchs0: Error: current cmd NULL,
already done?" messages.

Add support for ePWM submodule of PWMSS

ePWM is controlled by sysctl nodes dev.am335x_pwm.N.period,
dev.am335x_pwm.N.dutyA and dev.am335x_pwm.N.dutyB that controls
PWM period and duty cycles for channels A and B respectively.

Period and duty cycle are measured in clock ticks. Default
clock frequency for AM335x PWM subsystem is 100MHz

- Request non-cached memory for framebuffer
- Properly probe/initialize syscons

Print the 'setting internal ...' message only with bootverbose.

Increase the maximum KVM available on TI chips. Not sure why we suddenly need
that much, but that lets me boot with 1GB of RAM.

AM335x LCD controller driver with syscons support

Limitations:
- Raster mode only
- 24 and 32 bpp only

Add PWM module driver for AM335x. Only eCAS subsystem is supported

Export function to configure eCAS submodule from another drivers.
It's used to control LCD panel backlight on AM335x EVM.

Add SCM registers definitions for AM335x platform

Add clock definitions for LCD controller and PWM module

Back out r250768 until I can further investigate why it might
be causing problems with the BeagleBone Black boot.

Label the mmc child after the parent.

- Correct mispellings of word resource

Submitted by: Christoph Mallon <christoph.mallon@gmx.de>

Properly clean "spurious interrupt" state

Suggested by: Ian Lepore

Add a macro that gets the physical address of a memory mapped device
register from a bus space resource.

Note that this macro is just for ARM, and is intended to have a short
lifespan. The DMA engines in some SoCs need the physical address of a
memory-mapped device register as one of the arguments for the transfer.
Several scattered ad-hoc solutions have been converted to use this macro,
which now also serves to mark the places where a more complete fix needs
to be applied (after that fix has been designed).

MFcalloutng:
Switch eventtimers(9) from using struct bintime to sbintime_t.
Even before this not a single driver really supported full dynamic range of
struct bintime even in theory, not speaking about practical inexpediency.
This change legitimates the status quo and cleans up the code.

Fix typo

- Initialize GPIO_OE register based on pinmux configuration

Although AM335x TRM states that GPIO_OE register is not used and just
reflects pads configuration in practice it does control pin behavior
and shoiuld be set in addition to pinmux setup

Fix off-by-one error in sanity checks

- Fix off-by-one error when returning max pin number
- Fix GPIOGET for output pins. Requesting state for
output pin is valid operation, get the state from
TI_GPIO_DATAOUTX register

Fix copy-paste error in bus_space_unmap argument

While I'm at it - fix some style(9) issues

Submitted by: Mikael Urankar

Another overhaul of the CPSW driver for BeagleBone

Major changes:
* Finally tracked down the flow control setting that
seems to have been causing TX stalls and watchdog timeouts
* RX and TX paths now share a lot more code
* TX interrupt is no longer used; we instead GC finished
tx queue entries at the bottom of the start routine.
* TX start now queues fragmented packets directly; it only
invokes defrag() for occasional very fragmented packets.
* "sysctl dev.cpsw" dumps controller statistics and queue counts
* Host Error Interrupt will give extensive debugging information
if the controller chokes on the queued data.

Fix case for some signal names.

Submitted by: Emmanuel Vadot <elbarto@megadrive.org>

Filled in missing pads for AM335x / Beaglebone.

Submitted by: Emmanuel Vadot <elbarto@megadrive.org>

Clarify the error messages for unrecognized pins and muxtypes.

Define IPI_IRQ_START and IPI_IRQ_END.

- Identify more devices for OMAP4 SoC (up to OMAP4470)
- Whitespace fixes

Shuffle the TX underrun to work the same way as the RX underrun,
as suggested by YongHyeon PYUN.

While trying to track down the root cause for
TX stalls in this driver, I've also had some
time to evaluate the effectiveness of different
watchdog strategies.

This is the latest attempt, which consolidates
all of the watchdog logic in one place and
consistently detects TX stalls and resets within
a couple of seconds.

Overhauled CPSW driver for TI CPSW Ethernet module
(as used in AM335x SoC for BeagleBone).

Among other things:
* Watchdog reset doesn't hang the driver.
* Disconnecting cable doesn't hang the driver.
* ifconfig up/down doesn't hang the driver
* Out-of-memory no longer panics the driver.

Known issues:
* Doesn't have good support for fragmented packets
(calls m_defrag() on TX, assumes RX packets are never fragmented)
* Promisc and allmulti still unimplimented
* addmulti and delmulti still unimplemented
* TX queue still stalls (but watchdog now consistently recovers in ~5s)
* No sysctl monitoring
* Only supports port0
* No switch configuration support
* Not tested on anything but BeagleBone

Committed from: BeagleBone

PL310 driver update:

- Add pl310.disable tunable to disable L2 cache altogether. In
order to make sure that it's 100% disabled we use cache event
counters for cache line eviction and read allocate events
and panic if any of these counters increased. This is purely
for debugging purpose
- Direct access DEBUG_CTRL and CTRL might be unavailable in
unsecure mode, so use platform-specific functions for
these registers
- Replace #if 1 with proper erratum numbers
- Add erratum 753970 workaround
- Remove wait function for atomic operations
- Protect cache operations with spin mutex in order to prevent race condition
- Disable instruction cache prefetch and make sure data cache
prefetch is enabled in OMAP4-specific intialization

Mechanically substitute flags from historic mbuf allocator with
malloc(9) flags within sys.

Exceptions:

- sys/contrib not touched
- sys/mbuf.h edited manually

Fix spelling.

Strip trailing newline.

Merge the FDT versions of initarm.

The copies of initarm used on platforms with FDT support were almost
identical. The differences were pulled out into separate functions that
were called by initarm.

This change merges the, now identical, copies of initarm and a few of it's
support functions. This is a step towards a common kernel on ARMv6.

Fix SMP build for omap4

Submitted by: Giovanni Trematerra <gianni at freebsd DOT org>

Missing paren.

Pointy hat:me

set the kernelname from the boot loader environment.
This fixes kern.bootfile sysctl.

Submitted by: Giovanni Trematerra

Do proper padding of runt packets using code copied from bge(4).

Reviewed by: gnn

Refer to headers locally. This makes it a lot easier
to build this driver out-of-tree.

remove duplicate semicolons where possible.

Approved by: cperciva
MFC after: 1 week

Don't repeat the POSTREAD dma sync.

Replace deprecated M_DONTWAIT with M_NOWAIT.

Fix an mbuf leak in cpsw driver, clean up mbuf management:
* Record TX mbufs when we get them so we can release them.
* Set TX/RX mbuf slots to NULL when we are no longer responsible for them
* Move dma sync on RX into RX intr routine

Cut-and-paste dropped semicolon.

Name cpsw_stop to cpsw_stop_locked consistently with other functions
in this file that assume locks are already held.

Return correct packet size.

Remove unused variables from the OMAP ehci code.

Pull out the SoC specific parts of initarm into separate functions

Update different versions of physmap_init to be identical in preparation
for merging them.

Reduce the diff between the FDT implementations of initarm.
This only touches whitespace and comments.

Create a common set_stackptrs in sys/arm/machdep.c.

On single core devices set_stackptrs is only ever called with cpu = 0 in
initarm and will be identical to the existing function. On SMP this needs
to be implemented for sys/arm/mp_machdep.c, but the implementations are
identical for each SoC.

remove some unnecessary debugging statements, dead code and incorrect
comment...

Reviewed by: gnn, imp

Correct double "the the"

Approved by: cperciva
MFC after: 3 days

Correctly fetch the MAC address.

Break down the bytes directly into the softc;
the intermediate buffer isn't needed here.
Break down the bytes in the correct order.

Style cleanup

After r239366, fix the ti_edma3.c driver to use the
exact name as used in the FDT.

Set machine correctly on ARM. This allows universe to use the correct world
when building each kernel.

Reviewed by: imp

Specify architecture for assembler

Merging of projects/armv6, part 10

- Support for Texas Instruments SoCs:
- AM335x
- OMAP4

- Kernel configs, DTS for Beaglebone and Pandaboard

Submitted by: Ben Gray, Damjan Marion