Commit graph

386 commits

Author SHA1 Message Date
Linus Torvalds
dcf397f037 Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (124 commits)
  sh: allow building for both r2d boards in same binary.
  sh: fix r2d board detection
  sh: Discard .exit.text/.exit.data at runtime.
  sh: Fix up some section alignments in linker script.
  sh: Fix SH-4 DMAC CHCR masking.
  sh: Rip out left-over nommu cond syscall cruft.
  sh: Make kgdb i-cache flushing less inept.
  sh: kgdb section mismatches and tidying.
  sh: cleanup struct irqaction initializers.
  sh: early_printk tidying.
  video: pvr2fb: Add TV (RGB) support to Dreamcast PVR driver.
  sh: Conditionalize gUSA support.
  sh: Follow gUSA preempt changes in __switch_to().
  sh: Tidy up gUSA preempt handling.
  sh: __copy_user() optimizations for small copies.
  sh: clkfwk: Support multi-level clock propagation.
  sh: Fix URAM start address on SH7785.
  sh: Use boot_cpu_data for CPU probe.
  sh: Support extended mode TLB on SH-X3.
  sh: Bump MAX_ACTIVE_REGIONS for SH7785.
  ...
2007-10-13 09:49:04 -07:00
Thomas Gleixner
96a388de5d i386/x86_64: move headers to include/asm-x86
Move the headers to include/asm-x86 and fixup the
header install make rules

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2007-10-11 11:20:03 +02:00
Adrian McMenamin
5d9df8eeac sh: Fix SH-4 DMAC CHCR masking.
This patch fixes the DMA cascade by masking the correct bits.

Tested and working with Dreamcast PVR2 DMA. With this patch applied
the existing mainline code in arch/sh/drivers/dma/dma-sh.c works,
whereas before I was patching that to get round this problem.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-08 05:19:36 +09:00
Paul Mundt
01bd5e9ef2 sh: Make kgdb i-cache flushing less inept.
kgdb had its own ranged I-cache flushing routine that attempted to
duplicate the flush_icache_range() functionality, but managed to do
an explicit D-cache writeback & invalidate twice on SH-4. This is
a no-op for SH-3, and the flush_icache_range() semantics already do
what kgdb was feebly attempting to do already, so just move over to
that and kill off the wrapper.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-03 17:21:10 +09:00
Paul Mundt
a90f354709 sh: kgdb section mismatches and tidying.
The kgdb console setup was callable from a left-over deferred
initialization path, which in turn depends on __init symbols. Since
the deferred initialization was removed some time ago, kill off the
rest of those remnants and move kgdb_init() and friends to __init.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-10-03 17:13:34 +09:00
Paul Mundt
cb7af21f7d sh: Use boot_cpu_data for CPU probe.
This moves off of smp_processor_id() and only sets the probe
information for the boot CPU directly. This will be copied out
for the secondaries, so there's no reason to do this each time.

This also allows for some header tidying.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-27 18:18:39 +09:00
Paul Mundt
09a4df5f0c sh: processor.h needs smp.h
Trivial build fix for SH-2.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-27 12:57:35 +09:00
Paul Mundt
1f91bbb584 sh: Define _ebss for uClinux MTD map driver.
The uClinux MTD device uses _ebss, add the symbol and corresponding
export.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-24 18:11:27 +09:00
Bernd Schmidt
f9720205d1 Binfmt_flat: Add minimum support for the Blackfin relocations
Add minimum support for the Blackfin relocations, since we don't have
enough space in each reloc.  The idea is to store a value with one
relocation so that subsequent ones can access it.

Actually, this patch is required for Blackfin.  Currently if BINFMT_FLAT is
enabled, git-tree kernel will fail to compile.

Signed-off-by: Bernd Schmidt <bernd.schmidt@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Cc: David McCullough <davidm@snapgear.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Cc: Miles Bader <miles.bader@necel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2007-10-03 23:41:43 +08:00
Paul Mundt
aba1030a7e sh: Bring SMP support back from the dead.
There was a very preliminary bunch of SMP code scattered around for the
SH7604 microcontrollers from way back when, and it has mostly suffered
bitrot since then. With the tree already having been slowly getting
prepped for SMP, this plugs in most of the remaining platform-independent
bits.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 18:32:32 +09:00
Magnus Damm
f18d533e3c sh: intc - initial SMP support.
This implements initial support for the SMP INTC (particularly
INTC2) controllers.

These are largely implemented as conventional blocks, with
register sets grouped together at fixed strides relative to
the CPU id.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 18:16:42 +09:00
Paul Mundt
2d4a73d5b9 sh: Kill off special boot_cpu_data.
This consolidates the cpu_data definitions and gets rid of the special
boot_cpu_data. It's made a wrapper to the boot CPU, in order to keep
the existing in-tree users happy.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 18:01:40 +09:00
Adrian McMenamin
17be2d2b1c sh: Add maple bus support for the SEGA Dreamcast.
The Maple bus is SEGA's proprietary serial bus for peripherals
(keyboard, mouse, controller etc). The bus is capable of some
(limited) hotplugging and operates at up to 2 M/bits.

Drivers of one sort or another existed/exist for 2.4 and a rudimentary
port, which didn't support the 2.6 device driver model was also in
existence.

This driver - for the bus logic itself and for the keyboard (other
drivers will follow) are based on the code and concepts of those old
drivers but have lots of completely rewritten parts.

I have the maple bus code as a built in now as that seems the sane and
rational way to handle something like that - you either want the bus
or you don't.

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 15:55:55 +09:00
Paul Mundt
d04a0f79f5 sh: Fix up extended mode TLB for SH-X2+ cores.
The extended mode TLB requires both 64-bit PTEs and a 64-bit pgprot,
correspondingly, the PGD also has to be 64-bits, so fix that up.

The kernel and user permission bits really are decoupled in early
cuts of the silicon, which means that we also have to set corresponding
kernel permissions on user pages or we end up with user pages that the
kernel simply can't touch (!).

Finally, with those things corrected, really enable MMUCR.ME and
correct the PTEA value (this simply needs to be the upper 32-bits
of the PTE, with the size and protection bit encoding).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:55 +09:00
Markus Brunner
ded5431ff3 sh: Magic Panel R2 board support.
This adds support for the SH7720 (SH3-DSP) based Magic Panel R2
board.

Signed-off-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:54 +09:00
Paul Mundt
d581593388 sh: dma: Fix CONFIG_SYSFS=n build.
Trivial build fix for when sysfs is disabled.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:53 +09:00
Kristoffer Ericson
4f247e84bd sh: dma: Fix up build for SH7709 support.
Trivial build fixes for SH7709.

Signed-off-by: Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:53 +09:00
Kristoffer Ericson
f12468a6fd sh: Fix OFFCHIP_IRQ_BASE compile error.
HP6xx uses OFFCHIP_IRQ_BASE to know the base irq number where non
cpu interrupts should start. This define was in irq.h before, but
since rework got lost. It really belongs inside hd64461.h since
the hp6xx wont work without it.

Signed-off-by: Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:52 +09:00
Magnus Damm
da6b003adc sh: add writesb(), readsb(), writesw() and readsw() to io.h
This patch adds inline versions of writesb(), readsb(), writesw() and
readsw() to include/asm-sh/io.h. Stolen from include/asm-avr32/io.h.

These functions are needed to compile certain device drivers such as
ax88796.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:52 +09:00
Magnus Damm
897cfcd878 sh: intc - rework higlander irq code for r7780mp and r7785rp
This patch reworks the highlander irq code for r7780mp and r7785rp.
The same strategy as for the new R2D code is used here - the board
specific interrupts are now starting from HL_FPGA_IRQ_BASE. The code
for r7780rp is not touched due to lack of hardware.

Tested with CF, AX88796 on r7780mp and r7785rp. The touch switch
interrupt has also been tested on r7780mp.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:52 +09:00
Magnus Damm
953c8ef250 sh: intc - irl mode update for sh7780 and sh7785
This patch contains the following fixes and improvements:
- Fix address typo for INTMSK2 / INTMSKCLR2 registers on sh7780.
- Adds IRQ_MODE_IRLnnnn_MASK using intc controller for IRL masking.
- Good old IRQ_MODE_IRLnnnn should not register any intc controller.
- plat_irq_setup_pins() now selects IRL or IRQ mode.
- the holding function is now disabled using ICR0.

By default all external pin interrupts are disabled.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:51 +09:00
Paul Mundt
8a467a529f sh: Overhaul spinlocks and rwlocks for SH-4A SMP.
This rips out some of the old spinlock and rwlock behaviour that the SH-2
parts were using and reworks them for LL/SC semantics on the SH-4A.

This is primarily only useful for SH-X3 multi-cores, but can also be used
for building CONFIG_SMP=y testing kernels on SH-4A UP.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:51 +09:00
Paul Mundt
8786c952c1 sh: heartbeat driver update.
Add some flags for the heartbeat driver, and kill off some duplication
in the bit positions for the boards that don't have special cases.

This also allows for variable access widths and inversion.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:51 +09:00
Magnus Damm
3d37d94e5a sh: intc - primary priority masking fixes
This patch contains various intc fixes for problems reported by
Markus Brunner on the linuxsh-dev mailing list:

http://marc.info/?l=linuxsh-dev&m=118701948224991&w=1

Apart from added comments, the fixes are:

- add intc_set_priority() function prototype to hw_irq.h
- fix off-by-one error in intc_set_priority()
- make sure _INTC_WIDTH() is set for primary priority masking

Big thanks to Markus for finding these problems. Version two fixes
a compile error and an inverted primary check.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Acked-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:50 +09:00
Magnus Damm
5c37e02535 sh: intc - mark data structures as __initdata
With the intc core improved it is now possible to put the intc data
structures in the initdata section.

Version two of this patch puts the __initdata inside DECLARE_INTC_DESC()
and removes the __initdata included in the board specific r2d code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:50 +09:00
Magnus Damm
2eeec85638 sh: intc - convert board specific r2d code
This patch converts the board specific interrupt code for r2d to make
use of intc. While at it we improve the Kconfig to avoid confusion.

- Two sets of interrupt tables exist - one for R2D-1 and one for R2D-PLUS.
- R2D-1 and R2D-PLUS use the same irq constants.
- R2D-1 has AX88796 support, R2D-PLUS does not hook up that IRQ.
- R2D-PLUS has KEY support, R2D-1 does not hook up that IRQ.
- The number and order of IRQ values are disconnected from register bits.
- Interrupt sources now start from IRQ 100.
- The machvec demux function converts from irlm IRQ 0-14 to IRQ 100++.

Tested on R2D-1 and R2D-PLUS boards.

Version 2 adds CONFIG_RTS7751R2D_1 and CONFIG_RTS7751R2D_PLUS together
with intc structured as __initdata.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:50 +09:00
Magnus Damm
73505b445d sh: intc - rework core code
This patch reworks the intc core, implementing the following features:

- Support dual priority registers - one set and one clear register
- All 8/16/32 bit register combinations are now supported
- Both single mask and single enable bitmap register are supported
- Add code to set interrupt priority
- Speedup sense and priority configuration code
- Allocate data using bootmem, allows intc data structures to be
  __initdata
- Save memory - allocated memory footprint is smaller than intc
  structures

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:50 +09:00
Magnus Damm
6ef5fb2cfc sh: intc - add a clear register to struct intc_prio_reg
We need a secondary register member in struct intc_prio_reg to support
dual priority registers used by ipi on x3.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:49 +09:00
Markus Brunner
3ea6bc3de4 sh: Add SH7720 CPU support.
This adds support for the SH7720 (SH3-DSP) CPU.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:49 +09:00
Markus Brunner
dfc5ed2a93 sh: Add gpio.h stubs for PFC definitions.
This adds the PFC definitions for SH-3, as well as consolidating the
gpio.h mess within sh-sci. Stub in sh64, as it's the odd one out
between the sh-sci architectures (sh, sh64, h8300) in this capacity.

Signed-off by: Markus Brunner <super.firetwister@gmail.com>
Signed-off by: Mark Jonas <toertel@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:49 +09:00
Paul Mundt
fef9608627 sh: x3proto: ILSEL IRQ support.
This adds functionality for the on-board ILSEL IRQs that chain
IRL mode events. Many on-board devices (ethernet, usb, etc.) rely
on ILSEL IRQs directly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:48 +09:00
Magnus Damm
96290d808f sh: remove intc2 code
There is no point in keeping around the now unused intc2 code.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:48 +09:00
Magnus Damm
48180cab3a sh: intc - convert voyagergx code
This patch converts the sh-specific voyagergx interrupt code to make use
of intc. A lot of "interesting" old cruft gets replaced with intc tables
and some simple demux code.

- All interrupt sources in the sm501 data sheet are now in the header.
- The number and order of IRQ values are disconnected from register bits.
- Interrupt sources now start from IRQ 200.
- set_irq_chained_handler() is now used to hook up the demux function.

In the future it would probably make sense to move the interrupt demuxer
into into the mfd driver, but this is probably a nice step in the right
direction until that happens.

Tested on a R2D-1 board using the serial port hooked up to the sm501.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:48 +09:00
Magnus Damm
51da64264b sh: intc - add single bitmap register support
This patch adds single bitmap register support to intc. The current
code only handles 16 and 32 bit registers where a set bit means
interrupt enabled, but this is easy to extend in the future.

The INTC_IRQ() macro is also added to provide a way to hook in
interrupt controllers for FPGAs in boards or companion chips.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:47 +09:00
Magnus Damm
d59645d6ba sh: intc - remove redundant irq code for sh03, snapgear and titan
This patch removes redundant board specific interrupt code for boards
using sh775x processors and 4 IRQ lines in "Individual Interrupt Mode"
aka IRLM.

Three boards are affected: sh03, snapgear and titan.

The right way to do this is to use cpu specific code provided by intc.
A nice side effect is that sh03 now compiles, board not BROKEN any more.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:47 +09:00
Paul Mundt
ad89f87a84 rtc: rtc-sh: Support 4-digit year on SH7705/SH7710/SH7712.
All SH-4 parts have a 4-digit year, while the SH-3 parts typically
only use a 2-digit one. The SH7705, SH7710, and SH7712 SH-3 parts
however opted to extend it to 4-digit and still look and act like
an SH-3 RTC in all other ways.

This adds a capability flag (RTC_CAP_4_DIGIT_YEAR) that these
corner-case CPU subtypes can set in their platform data and cleans
up some of the ifdef mess in the driver as a result.

Reported-by: Markus Brunner <super.firetwister@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:47 +09:00
Magnus Damm
a0e23267d4 sh: intc - add support for SH7785
This patch converts the cpu specific interrupt setup code for sh7785
from intc2 to intc. New vectors are also added to match the information
provided by the datasheet.

No IRQ/IRL pin vectors are enabled by default. Use plat_irq_setup_pins()
to select between IRL and IRQ mode.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:46 +09:00
Paul Mundt
e7bd34a15b sh: Support explicit L1 cache disabling.
This reworks the cache mode configuration in Kconfig, and allows for
explicit selection of write-back/write-through/off configurations.
All of the cache flushing routines are optimized away for the off
case.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-09-21 11:57:46 +09:00
Paul Mundt
322392646b sh: Add missing dma_sync_single_range_for_*().
The b44 build uses these, caught by allmodconfig:

drivers/net/b44.c: In function `b44_sync_dma_desc_for_cpu':
drivers/net/b44.c:159: error: implicit declaration of function `dma_sync_single_range_for_cpu'

Follow the sparc64 change and stub them in.

Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-08-10 02:37:01 +09:00
Linus Torvalds
34bac238cc Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6.23
* master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6.23:
  sh: fix defconfigs for sh7751r boards
  sh: fix cf support on r2d boards
  sh: update r2d defconfig
  sh: update snapgear defconfig.
  sh: Fix SH-X3 FPU exception handling.
  sh: Fix pgd mismatch from cached TTB in unhandled fault.
  sh: Don't include fault-nommu on SH-2/SH-2A.
  sh: Fix irqflags tracing for SH-3/4 nommu.
  sh: Fix lockdep debugging oops on SH-3/4.
2007-08-03 15:07:10 -07:00
Magnus Damm
5ca95c48f1 sh: fix cf support on r2d boards
This patch makes sure cf support is enabled on R2D-PLUS but disabled
on R2D-1. Without this fix R2D-1 boards hang on bootup.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-08-03 10:16:29 +09:00
Heiko Carstens
fd0cbdd378 Fix WARN_ON() on bitfield ops for all other archs
Fixes WARN_ON() on bitfiels ops for all architectures that have
been left out in 8d4fbcfbe0.

Cc: Alexey Dobriyan <adobriyan@sw.ru>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Kyle McMartin <kyle@parisc-linux.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-08-01 20:45:38 -07:00
Stephane Eranian
a583f1b542 remove unused TIF_NOTIFY_RESUME flag
Remove unused TIF_NOTIFY_RESUME flag for all processor architectures.  The
flag was not used excecpt on IA-64 where the patch replaces it with
TIF_PERFMON_WORK.

Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Cc: <linux-arch@vger.kernel.org>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-31 15:39:38 -07:00
Magnus Damm
d89ddd1c84 sh: remove support for sh7300 and solution engine 7300
This patch removes old dead code:
- kill off sh7300 cpu support
- get rid of broken solution engine 7300 board support

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-26 15:37:57 +09:00
Paul Mundt
e257ad062a sh: Kill off virt_to_bus()/bus_to_virt().
Wire up ARCH_NO_VIRT_TO_BUS, and kill off the remaining users. The
dma-mapping code really wanted virt_to_phys()/phys_to_virt() anyways,
there are no inherently special bus addresses.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-26 15:37:40 +09:00
Paul Mundt
3c6b6c7fb7 sh: Kill the rest of the SE73180 cruft.
There was a stray header, and the mach-type removal was also
missed.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-26 15:34:56 +09:00
Magnus Damm
870e8a2438 sh: remove support for sh73180 and solution engine 73180
This patch removes old dead code:
- kill off sh73180 cpu support
- get rid of broken solution engine 73180 board support

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-25 10:49:21 +09:00
Paul Mundt
f0b859e3d6 sh: Reclaim beginning of P3 space for vmalloc area.
The first 1MB of P3 space was reserved and used for page colouring,
as we've reworked that to use fixmaps, we can reclaim the space and
hand it back to VMALLOC_START.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-25 10:43:47 +09:00
Adrian McMenamin
eb695dbf00 sh: Fix Dreamcast DMA issues.
The current SH DMA API is somewhat broken, not correctly matching
virtual channel to the correct SH DMAC. This wasn't noticeable when
using g2 DMA for the sound driver - one channel 0 is as good as any
other! - but caused the pvr2 driver to fail.

This patch fixes the pvr2 problem and consequently fixes the sound
driver to ensure it continues to function.

Signed-off by: Adrian McMenamin <adrian@mcmen.demon.co.uk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-24 13:30:55 +09:00
Paul Mundt
8cf1a74305 sh: Add kmap_coherent()/kunmap_coherent() interface for SH-4.
This wires up kmap_coherent() and kunmap_coherent() on SH-4, and
moves away from the p3map_mutex and reserved P3 space, opting to
use fixmaps for colouring instead.

The copy_user_page()/clear_user_page() implementations are moved
to this, which fixes the nasty blowups with spinlock debugging
as a result of having some of these calls nested under the page
table lock.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-24 13:28:26 +09:00