Commit Graph

54 Commits

Author SHA1 Message Date
Russell King ceb0885d3b Merge branch 'misc' into devel
Conflicts:
	arch/arm/mm/init.c
2010-07-31 14:20:02 +01:00
Kirill A. Shutemov 6338a6aa7c ARM: 6269/1: Add 'code' parameter for hook_fault_code()
Add one more parameter to hook_fault_code() to be able to set 'code'
field of struct fsr_info.

Signed-off-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-27 10:48:34 +01:00
Linus Walleij 7d63397574 ARM: 6159/1: Move IOP to use common mult/shift calculation code
Since the infrastructure for determining shift/mult values from a
clock rate and a minimum programmable rate is now in the kernel,
lets remove this custom code.

Cc: Deepak Saxena <dsaxena@plexity.net>
Acked-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-07-22 10:37:47 +01:00
Will Deacon de4338f40e ARM: 6048/1: ARM: iop3xx: register PMU IRQs during board initialisation
This patch adds an initcall for the iop3xx platforms so that they
register their PMU IRQS with the PMU framework in the Kernel.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-04-29 18:03:49 +01:00
Russell King 31aa8fd6fd ARM: Add caller information to ioremap
This allows the procfs vmallocinfo file to show who created the ioremap
regions.  Note: __builtin_return_address(0) doesn't do what's expected
if its used in an inline function, so we leave __arm_ioremap callers
in such places alone.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-15 21:39:11 +00:00
Mikael Pettersson 345a32296b iop: implement sched_clock()
This adds a better sched_clock() to the IOP platform,
implemented using its new clocksource support.

Tested on n2100, compile-tested for all plat-iop machines.

[dan.j.williams@intel.com: allow early cp6 access]
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-10-29 11:46:56 -07:00
Mikael Pettersson 980f2296b5 iop: enable generic time
This updates the IOP platform to use the kernel's generic time
framework. With clockevent support in place, this reduces to
selecting GENERIC_TIME and removing the platform's private timer
->offset() operation (iop_gettimeoffset).

Tested on n2100, compile-tested for all plat-iop machines.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-10-29 11:46:55 -07:00
Mikael Pettersson 469d30448d iop: clockevent support
This updates the IOP platform to expose the interrupting
timer 0 as a clockevent object. The timer interrupt handler
is changed to call the clockevent ->event_handler() instead
of timer_tick(), and ->set_next_event() and ->set_mode()
operations are added to allow the mode of the timer to be
updated (required for ONESHOT/NOHZ mode).

Timer 0 must now be properly initialised, which requires
a new write_tcr0() function from the mach-specific code.

The mode of timer 0 must be read at the start of ->set_mode(),
which requires a new read_tmr0() function from the mach-
specific code.

Initial setup of timer 0 is also rewritten to be more robust.

Tested on n2100, compile-tested for all plat-iop machines.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-10-29 11:46:54 -07:00
Mikael Pettersson a91549a8f2 iop: clocksource support
This updates the IOP platform to expose the free-running
timer 1 as a clocksource object. This timer is now also
properly initialised, which requires a new write_tcr1()
function from the mach-specific code. Apart from the
explicit initialisation, there is no functional change
in how timer 1 is programmed.

Tested on n2100, compile-tested for all plat-iop machines.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-10-29 11:46:54 -07:00
Russell King 534d0c92cf Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/xscaleiop
Conflicts:
	MAINTAINERS
2009-10-02 22:31:04 +01:00
NeilBrown 4b3df5668c Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx into for-linus 2009-09-23 18:31:11 +10:00
Nicolas Pitre 2f82af08fc Nicolas Pitre has a new email address
Due to problems at cam.org, my nico@cam.org email address is no longer
valid.  FRom now on, nico@fluxnic.net should be used instead.

Signed-off-by: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-15 09:37:12 -07:00
Dan Williams 9308add6ea dmaengine: cleanup unused transaction types
No drivers currently implement these operation types, so they can be
deleted.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-09-08 17:42:52 -07:00
Dan Williams f9dd213437 Merge branch 'md-raid6-accel' into ioat3.2
Conflicts:
	include/linux/dmaengine.h
2009-09-08 17:42:29 -07:00
Julia Lawall a692838dca arch/arm/plat-iop: Use DIV_ROUND_CLOSEST
The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-18 14:06:52 -07:00
Aaro Koskinen 5b9eda3313 iop3xx: ATU and PCI memory configuration corrected
There are two 64 MB outbound memory windows at bus addresses
0x80000000..0x83ffffff and 0x84000000..0x87ffffff for PCI
memory. Currently, on iop32x, only the lower window is available for
allocations, limiting the available space to 64 MB. On iop33x the full
128 MB can be allocated, but the translation value is wrong for the
upper window.

The patch enables the full 128 MB space on iop32x and corrects the
initialization of OMWTVR1. Redundant definitions are deleted. Tested
using a Thecus N2100 board with a graphics adapter in the expansion
slot. Both windows are in use:

  00:05.0 VGA compatible controller: XGI Technology Inc. (eXtreme Graphics
  Innovation) Volari Z7 (prog-if 00 [VGA controller])
  [...]
	Region 0: Memory at 80000000 (32-bit, prefetchable) [size=64M]
	Region 1: Memory at 84080000 (32-bit, non-prefetchable) [size=256K]

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-08-18 13:48:35 -07:00
Dan Williams 099f53cb50 async_tx: rename zero_sum to val
'zero_sum' does not properly describe the operation of generating parity
and checking that it validates against an existing buffer.  Change the
name of the operation to 'val' (for 'validate').  This is in
anticipation of the p+q case where it is a requirement to identify the
target parity buffers separately from the source buffers, because the
target parity buffers will not have corresponding pq coefficients.

Reviewed-by: Andre Noll <maan@systemlinux.org>
Acked-by: Maciej Sosnowski <maciej.sosnowski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2009-04-08 14:28:37 -07:00
Yang Hongyang 284901a90a dma-mapping: replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)
Replace all DMA_32BIT_MASK macro with DMA_BIT_MASK(32)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:11 -07:00
Yang Hongyang 6a35528a83 dma-mapping: replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)
Replace all DMA_64BIT_MASK macro with DMA_BIT_MASK(64)

Signed-off-by: Yang Hongyang<yanghy@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-04-07 08:31:10 -07:00
Russell King ebb4c65869 [ARM] iop: iop3xx needs registers mapped uncached+unbuffered
Mikael Pettersson reported:

   The 2.6.28-rc kernels fail to detect PCI device 0000:00:01.0
   (the first ethernet port) on my Thecus n2100 XScale box.

   There is however still a strange "ghost" device that gets partially
   detected in 2.6.28-rc2 vanilla.

The IOP321 manual says:

  The user designates the memory region containing the OCCDR as
  non-cacheable and non-bufferable from the IntelR XScaleTM core.
  This guarantees that all load/stores to the OCCDR are only of
  DWORD quantities.

Ensure that the OCCDR is so mapped.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-09 11:18:36 +00:00
Russell King fced80c735 [ARM] Convert asm/io.h to linux/io.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-09-06 12:10:45 +01:00
Russell King a09e64fbc0 [ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:55:48 +01:00
Russell King be50972935 [ARM] Remove asm/hardware.h, use asm/arch/hardware.h instead
Remove includes of asm/hardware.h in addition to asm/arch/hardware.h.
Then, since asm/hardware.h only exists to include asm/arch/hardware.h,
update everything to directly include asm/arch/hardware.h and remove
asm/hardware.h.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:40:08 +01:00
Russell King 0f8469a54f [ARM] Eliminate useless includes of asm/mach-types.h
There are 43 includes of asm/mach-types.h by files that don't
reference anything from that file.  Remove these unnecessary
includes.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-08-07 09:40:04 +01:00
Arnaud Patard 63f385cd1f [ARM] 5160/1: IOP3XX: gpio/gpiolib support
This patch brings support for gpio/gpiolib framework to Intel IOP3xx
platforms.

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-07-09 23:31:42 +01:00
Dan Williams c34002c102 iop: unconditionally initialize the ATU on platforms known to be 'hosts'
Platforms like iq80321 and iq80331 which may be host-bus-adapters
require 'iop3xx_init_atu=y' to be specified on the kernel command line.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2008-03-26 12:33:41 -07:00
Russell King 97c46048ce iop: Program outbound windows using the correct definitions
The outbound translate registers should be programmed with the bus
addresses that are defined in the header files, rather than the
physical address.

Currently it doesn't matter because they're identical, but the headers
currently allow them to be different, and not using the right macros
here means that people are in for a surprise if they change them.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-26 12:33:41 -07:00
Russell King 27eedbf557 iop: when scanning PCI bus, translate the PCI addresses according to the outbound window settings
... otherwise we end up trying to access peripherals using wrong PCI
addresses.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-26 12:33:40 -07:00
Russell King c3a1c9c75b iop: Make IOP ATU window debug readable
Make the inbound and outbound memory windows debugging meaningful to
those who don't know what the register names for the ATU mean.  IOW,
use plain english rather than register jargon.

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-26 12:33:39 -07:00
Harvey Harrison 8e86f4271a [ARM] replace remaining __FUNCTION__ occurrences
__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-03-06 12:18:18 +00:00
Peter Zijlstra 66a2c077c3 [ARM] xtime_seqlock: fix more ARM machines for xtime deadlocking
move update_process_times() out from under xtime_lock.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-04 13:14:07 +00:00
Dan Williams 70c14ff0e9 [ARM] 4495/1: iop: combined watchdog timer driver for iop3xx and iop13xx
In order for this driver to be shared across the iop architectures the
iop3xx and iop13xx header files are modified to present a common interface
for the iop_wdt driver.

Details:
* iop13xx supports disabling the timer while iop3xx does not.  This requires
  a few 'compatibility' definitions in include/asm-arm/hardware/iop3xx.h to
  preclude adding #ifdef CONFIG_ARCH_IOP13XX blocks to the driver code.
* The heartbeat interval is derived from the internal bus clock rate, so this
  this patch also exports the tick rate to the iop_wdt driver.

Cc: Curt Bruns <curt.e.bruns@intel.com>
Cc: Peter Milne <peter.milne@d-tacq.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Acked-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-07-20 09:35:42 +01:00
Dan Williams 2492c84518 iop3xx: surface the iop3xx DMA and AAU units to the iop-adma driver
Adds the platform device definitions and the architecture specific support
routines (i.e. register initialization and descriptor formats) for the
iop-adma driver.

Changelog:
* add support for > 1k zero sum buffer sizes
* added dma/aau platform devices to iq80321 and iq80332 setup
* fixed the calculation in iop_desc_is_aligned
* support xor buffer sizes larger than 16MB
* fix places where software descriptors are assumed to be contiguous, only
  hardware descriptors are contiguous for up to a PAGE_SIZE buffer size
* convert to async_tx
* add interrupt support
* add platform devices for 80219 boards
* do not call platform register macros in driver code
* remove switch() statements for compatible register offsets/layouts
* change over to bitmap based capabilities
* remove unnecessary ARM assembly statement
* checkpatch.pl fixes
* gpl v2 only correction
* phys move to dma_async_tx_descriptor

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2007-07-13 08:06:19 -07:00
Linus Torvalds d07b3c2532 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm: (22 commits)
  [ARM] spelling fixes
  [ARM] at91_adc parenthesis balance
  [ARM] 4400/1: S3C24XX: Add high-speed MMC device definition
  [ARM] 4399/2: S3C2443: Fix SMDK2443 nand timings
  [ARM] 4398/1: S3C2443: Fix watchdog IRQ number
  [ARM] 4397/1: S3C2443: remove SDI0/1 IRQ ambiguity
  [ARM] 4396/1: S3C2443: Add missing HCLK clocks
  [ARM] 4395/1: S3C24XX: add include of <linux/sysdev.h> to relevant machines
  [ARM] 4388/1: no need for arm/mm mmap range checks for non-mmu
  [ARM] 4387/1: fix /proc/cpuinfo formatting for pre-ARM7 parts
  [ARM] ARMv6: add CPU_HAS_ASID configuration
  [ARM] integrator: fix pci_v3 compile error with DEBUG_LL
  [ARM] gic: Fix gic cascade irq handling
  [ARM] Silence OMAP kernel configuration warning
  [ARM] Update ARM syscalls
  [ARM] 4384/1: S3C2412/13 SPI registers offset correction
  [ARM] 4383/1: iop: fix usage of '__init' and 'inline' in iop files
  [ARM] 4382/1: iop13xx: fix msi support
  [ARM] Remove Integrator/CP SMP platform support
  [ARM] 4378/1: KS8695: Serial driver fix
  ...
2007-05-21 10:00:22 -07:00
Alexey Dobriyan e8edc6e03a Detach sched.h from mm.h
First thing mm.h does is including sched.h solely for can_do_mlock() inline
function which has "current" dereference inside. By dealing with can_do_mlock()
mm.h can be detached from sched.h which is good. See below, why.

This patch
a) removes unconditional inclusion of sched.h from mm.h
b) makes can_do_mlock() normal function in mm/mlock.c
c) exports can_do_mlock() to not break compilation
d) adds sched.h inclusions back to files that were getting it indirectly.
e) adds less bloated headers to some files (asm/signal.h, jiffies.h) that were
   getting them indirectly

Net result is:
a) mm.h users would get less code to open, read, preprocess, parse, ... if
   they don't need sched.h
b) sched.h stops being dependency for significant number of files:
   on x86_64 allmodconfig touching sched.h results in recompile of 4083 files,
   after patch it's only 3744 (-8.3%).

Cross-compile tested on

	all arm defconfigs, all mips defconfigs, all powerpc defconfigs,
	alpha alpha-up
	arm
	i386 i386-up i386-defconfig i386-allnoconfig
	ia64 ia64-up
	m68k
	mips
	parisc parisc-up
	powerpc powerpc-up
	s390 s390-up
	sparc sparc-up
	sparc64 sparc64-up
	um-x86_64
	x86_64 x86_64-up x86_64-defconfig x86_64-allnoconfig

as well as my two usual configs.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-21 09:18:19 -07:00
Simon Arlott 6cbdc8c535 [ARM] spelling fixes
Spelling fixes in arch/arm/.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-20 20:10:32 +01:00
Dan Williams d73d801177 [ARM] 4383/1: iop: fix usage of '__init' and 'inline' in iop files
WARNING: arch/arm/mach-iop13xx/built-in.o - Section mismatch: reference to
.init.text:iop13xx_pcie_map_irq from .text between 'iop13xx_pci_setup' (at
offset 0x7fc) and 'iop13xx_map_pci_memory'

While fixing this warning I also recalled Adrian Bunk's recommendation to
not use inline in .c files, as 'iop13xx_map_pci_memory' is needlessly
inlined.

Removing 'inline' uncovered some dead code so that is cleaned up as well.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-16 15:35:27 +01:00
Bernhard Walle b30fabadae Add IRQF_IRQPOLL flag on arm
Add IRQF_IRQPOLL for each timer interrupt.

Signed-off-by: Bernhard Walle <bwalle@suse.de>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:22 -07:00
Russell King 6f95416ebe Merge branches 'arm-mm', 'at91', 'clkevts', 'imx', 'iop', 'misc', 'netx', 'ns9xxx', 'omap', 'pxa', 'rpc', 's3c' and 'sa1100' into devel 2007-05-06 20:57:51 +01:00
Russell King 3603ab2b62 [ARM] mm 10: allow memory type to be specified with ioremap
__ioremap() took a set of page table flags (specifically the cacheable
and bufferable bits) to control the mapping type.  However, with
the advent of ARMv6, this is far too limited.

Replace the page table flags with a memory type index, so that the
desired attributes can be selected from the mem_type table.

Finally, to prevent silent miscompilation due to the differing
arguments, rename the __ioremap() and __ioremap_pfn() functions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-05 20:59:27 +01:00
Dan Williams e90ddd813d [ARM] 4348/4: iop3xx: Give Linux control over PCI initialization
Currently the iop3xx platform support code assumes that RedBoot is the
bootloader and has already initialized the ATU.  Linux should handle this
initialization for three reasons:

1/ The memory map that RedBoot sets up is not optimal (page_to_dma and
virt_to_phys return different addresses).  The effect of this is that using
the dma mapping API for the internal bus dma units generates pci bus
addresses that are incorrect for the internal bus.

2/ Not all iop platforms use RedBoot

3/ If the ATU is already initialized it indicates that the iop is an add-in
card in another host, it does not own the PCI bus, and should not be
re-initialized.

Changelog:
* rather than change nr_controllers to zero, simply do not call
  pci_common_init

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-05-03 14:02:48 +01:00
Dan Williams 8903fcce9b [ARM] 4340/1: iop: fix iop_getttimeoffset
Fix a typo which causes a necessary cpwait to be missed on iop3xx, Michael
Brunner <mibru@gmx.de>

Save a register in the assembly routine, rmk

Cc: Lennert Buytenhek <kernel@wantstofly.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-04-30 15:24:47 +01:00
Dan Williams 3668b45d46 [ARM] 4187/1: iop: unify time implementation across iop32x, iop33x, and iop13xx
* architecture specific details are handled in asm/arch/time.h
* ARCH_IOP13XX now selects PLAT_IOP
* as suggested by Lennert use ifdef CONFIG_XSCALE to skip the cp_wait on
XSC3

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-17 15:05:40 +00:00
Dan Williams 4434c5c7fd [ARM] 4186/1: iop: remove cp6_enable/disable routines
This functionality is replaced by cp6_trap

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-17 15:04:53 +00:00
Dan Williams 588ef76935 [ARM] 4184/1: iop: cp6 access handler (undef_hook)
Enable svc access to cp6 via an undefined instruction hook.  Do not enable
access for usr code.

This patch also makes iop13xx select PLAT_IOP, this requires a small change
to drivers/i2c/busses/i2c-iop3xx.c.

Per Lennert Buytenhek's note, the cp6 trap routine is moved to arch/arm/plat-iop
Per Nicolas Pitre's note, the cp_wait is skipped since the latency to
return to the faulting function is longer than cp_wait.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-14 15:21:24 +00:00
Dan Williams 6df26700c0 [ARM] 4182/1: iop3xx: fix the ioremap implementation to not remap static ranges
Implement a custom ioremap implementation for iop3xx. This saves
establishing new mappings. It also cleans up the PCI IO resource to be a
physical address rather than a virtual address as Russell pointed out on
the original iop13xx port.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-14 15:21:21 +00:00
Linus Torvalds 0cd61b68c3 Initial blind fixup for arm for irq changes
Untested, but this should fix up the bulk of the totally mechanical
issues, and should make the actual detail fixing easier.

Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 10:59:54 -07:00
Lennert Buytenhek c852ac8044 [ARM] 3832/1: iop3xx: coding style cleanup
Since the iop32x code isn't iop321-specific, and the iop33x code isn't
iop331-specfic, do a s/iop321/iop32x/ and s/iop331/iop33x/, and tidy up
the code to conform to the coding style guidelines somewhat better.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:53 +01:00
Lennert Buytenhek 72edd84a6b [ARM] 3827/1: iop3xx: add common gpio module
Implement the gpio_line_{config,get,set} API for iop3xx.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:47 +01:00
Lennert Buytenhek 38ce73ebd7 [ARM] 3825/1: iop3xx: use cp6 enable/disable macros
Add CP6 enable/disable sequences to the timekeeping code and the IRQ
code.  As a result, we can't depend on CP6 access being enabled when
we enter get_irqnr_and_base anymore, so switch the latter over to
using memory-mapped accesses for now.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25 10:25:45 +01:00