Commit Graph

105 Commits

Author SHA1 Message Date
Russell King
e7ec02938d [ARM SMP] Fix another ARMv6 bitop problem
We sometimes forgot to check whether the exclusive store succeeded.
Ensure that we always check.  Also ensure that we always use the
out of line versions, since the inline versions are not SMP safe.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-28 20:36:26 +01:00
Linus Torvalds
fc00a6274b Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-07-26 15:13:26 -07:00
Linus Torvalds
0983f05094 Merge master.kernel.org:/home/rmk/linux-2.6-arm-smp 2005-07-26 15:12:54 -07:00
Eric W. Biederman
7c9034735e [PATCH] Add emergency_restart()
When the kernel is working well and we want to restart cleanly
kernel_restart is the function to use.   But in many instances
the kernel wants to reboot when thing are expected to be working
very badly such as from panic or a software watchdog handler.

This patch adds the function emergency_restart() so that
callers can be clear what semantics they expect when calling
restart.  emergency_restart() is expected to be callable
from interrupt context and possibly reliable in even more
trying circumstances.

This is an initial generic implementation for all architectures.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-07-26 14:35:41 -07:00
Russell King
6d9b37a3a8 [PATCH] ARM SMP: Add ARMv6 memory barriers
Convert explicit gcc asm-based memory barriers into smp_mb() calls.
These change between barrier() and the ARMv6 data memory barrier
instruction depending on whether ARMv6 SMP is enabled.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-26 19:44:26 +01:00
Russell King
9560782f9a [PATCH] ARM SMP: Use exclusive load/store for __xchg
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-26 19:39:31 +01:00
Dimitry Andric
02cdad3f93 [PATCH] ARM: 2819/1: Fix several S3C24x0 IIS defines
Patch from Dimitry Andric

- Change S3C2440_IISCON_MPLL to S3C2440_IISMOD_MPLL:
  The S3C2440 IISCON register doesn\'t control the master clock selection, this is done with the IISMOD register.
- Correct S3C2410_IISMOD_256FS and S3C2410_IISMOD_384FS:
  This is set via bit 2 of IISMOD, not bit 1.
- Add S3C2410_IISCON_PSCEN (prescaler enable), for completeness\' sake.

Signed-off-by: Dimitry Andric <dimitry.andric@tomtom.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-26 19:20:25 +01:00
Russell King
4e8fd22bd4 [PATCH] ARM SMP: Fix ARMv6 spinlock and semaphore implementations
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-24 12:13:40 +01:00
Sascha Hauer
772a9e631c [PATCH] ARM: 2687/1: i.MX framebuffer: make dmacr register platform configurable
Patch from Sascha Hauer

The dmacr needs different settings on some boards. This patch makes the
register configurable by the platform part.
Also we have imxfb_disable_controller(), so lets use it.

Signed-off-by: Steven Scholz
Signed-off-by: Sascha Hauer
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-17 20:15:36 +01:00
Alexander Schulz
b7523418f6 [PATCH] ARM: 2815/1: Shark: new defconfig, fixes with __io and serial ports
Patch from Alexander Schulz

This patch brings a new default config file for the shark and
fixes a compilation issue with io addressing and a runtime
problem with the serial ports, where I corrected a wrong
regshift value.
These are all shark specific files so I hope it is ok to
put them in one patch.

Signed-off-by: Alexander Schulz <alex@shark-linux.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-16 17:17:18 +01:00
Linus Torvalds
6cd59f7a41 Merge /home/torvalds/linux-2.6-arm 2005-07-13 10:12:50 -07:00
Len Brown
5028770a42 [ACPI] merge acpi-2.6.12 branch into latest Linux 2.6.13-rc...
Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-12 17:21:56 -04:00
David Shaohua Li
c9c3e457de [ACPI] PNPACPI vs sound IRQ
http://bugme.osdl.org/show_bug.cgi?id=4016

Written-by: David Shaohua Li <shaohua.li@intel.com>
Acked-by: Adam Belay <abelay@novell.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2005-07-12 00:03:30 -04:00
Linus Torvalds
200d481f28 Merge master.kernel.org:/pub/scm/linux/kernel/git/tglx/mtd-2.6 2005-07-11 10:18:18 -07:00
Russell King
d12734d14e [PATCH] ARM SMP: Rename cpu_present_mask to cpu_possible_map
The kernel's terminology for this is cpu_possible_map not
cpu_present_mask.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-11 17:38:36 +01:00
Tony Lindgren
bb13b5fdba [PATCH] ARM: 2804/1: OMAP update 9/11: Update OMAP arch files
Patch from Tony Lindgren

This patch by various OMAP developers syncs the OMAP
specific arch files with the linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-10 19:58:18 +01:00
Tony Lindgren
d48af15ea7 [PATCH] ARM: 2802/1: OMAP update 8/11: Update OMAP arch files
Patch from Tony Lindgren

This patch by various OMAP developers syncs the OMAP
specific arch files with the linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-10 19:58:17 +01:00
Tony Lindgren
af973d2aff [PATCH] ARM: 2797/1: OMAP update 1/11: Update include files
Patch from Tony Lindgren

This patch by various OMAP developers syncs the OMAP
specific include files with the linux-omap tree.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-10 19:58:06 +01:00
Lennert Buytenhek
28187f2ce3 [PATCH] ARM: 2793/1: platform serial support for ixp2000
Patch from Lennert Buytenhek

This patch converts the ixp2000 serial port over to a platform
serial device.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-10 19:44:53 +01:00
Thomas Gleixner
97f927a4d7 [MTD] XIP cleanup
Move the architecture dependend code into include/asm/mtd-xip.h

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2005-07-07 16:50:16 +02:00
Deepak Saxena
450008b5a6 [PATCH] ARM: 2792/1: IXP4xx iomap API implementation
Patch from Deepak Saxena

This patch implements the iomap API for Intel IXP4xx NPU systems.
We need to implement our own version of the API functions b/c of the
PCI hostbridge does not provide the capability to map PCI I/O space
into the CPU's physical memory space. In addition, if a system has
more than 64M of PCI memory mapped BARs, PCI memory must also be
accessed indirectly.  This patch changes the assignment of PCI I/O
resources to fall into to 0x0000:0xffff range so that we can trap
I/O areas in our ioread/iowrite macros.

Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-06 23:06:05 +01:00
Russell King
17af691cd1 [PATCH] ARM: Fix new-ABI layout of struct stat64
Add __attribute__((packed)) to ensure that the stat64 structure is
correctly laid out no matter which ABI the kernel is compiled for.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-04 13:02:46 +01:00
Russell King
f9bd6ea446 [PATCH] ARM: Change 'param_offset' to 'boot_params'
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-04 10:43:36 +01:00
Russell King
e9dea0c65d [PATCH] ARM: Remove machine description macros
Remove the pointless machine description macros, favouring C99
initialisers instead.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-03 17:38:58 +01:00
Todd Poynor
3e18a45abc [PATCH] ARM: 2782/1: PXA27x MDREFR K0DB4 define
Patch from Todd Poynor

Add definition of K0DB4 SDCLK<0,3> divide-by-4 control/status bit in the
MDREFR register for Intel XScale PXA27x.

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-01 11:27:06 +01:00
Todd Poynor
26705ca46b [PATCH] ARM: 2781/2: PXA27x Standby mode take 2
Patch from Todd Poynor

Add support for PXA27x Standby mode, a low-power mode that retains CPU
and some peripheral state (the existing "sleep" mode is a power-power
mode that retains less state). Activated via:
echo -n standby > /sys/power/state
From: David Burrage and Todd Poynor

Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-01 11:27:05 +01:00
Russell King
cfb0810eab [PATCH] ARM: Don't try to send a signal to pid0
If we receive an unrecognised abort during boot, don't try to
send a signal to pid0, but instead report the current state.
This leads to less confusing debug reports.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-30 11:06:49 +01:00
Richard Purdie
9ec3c75cde [PATCH] ARM: 2768/1: PXA: Add a required header file for LL_DEBUG
Patch from Richard Purdie

With DEBUG enabled, head.S includes arch/debug-macro.S. On the PXA, this
contains references to the macro io_p2v() so hardware.h needs to be
included.

Signed-off-by: Richard Purdie <rpurdie@openedhand.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-29 15:17:49 +01:00
Russell King
b720f73296 [PATCH] ARM: Convert ARM timer implementations to use readl/writel
Convert ARMs timer implementations to use readl/writel instead of accessing
the registers via a struct.

People have recently asked if accessing timers via a structure is the
"right way" and its not the Linux way.  So fix this code to conform to
"The Linux Way"(tm).

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
2005-06-29 15:15:54 +01:00
Russell King
99a0616bcd Merge with ../linux-2.6-smp 2005-06-29 09:40:28 +01:00
Linus Torvalds
7e568e62e9 Merge master.kernel.org:/home/rmk/linux-2.6-arm 2005-06-28 15:00:08 -07:00
Ben Dooks
072cd703b6 [PATCH] ARM: 2762/1: S3C24XX Audio platform data
Patch from Ben Dooks

This provides the s3c24xx audio platform data which can be
supplied from any of the board specific drivers.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-28 21:01:03 +01:00
Russell King
053a7b5b76 [PATCH] ARM SMP: __xchg support
This enables the existing __xchg implementation to be used on SMP.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-28 19:22:25 +01:00
Russell King
603fff5442 [PATCH] ARM SMP: TLB implementations only affect local CPU
The existing TLB flush implementations only have an effect on
the local CPU.  Prefix them with local_.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-28 13:40:39 +01:00
Greg KH
8644d2a42b Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 2005-06-27 22:07:56 -07:00
Andrew Morton
bb4a61b6ea [PATCH] PCI: fix up errors after dma bursting patch and CONFIG_PCI=n
With CONFIG_PCI=n:

In file included from include/linux/pci.h:917,
                 from lib/iomap.c:6:
include/asm/pci.h:104: warning: `enum pci_dma_burst_strategy' declared inside parameter list
include/asm/pci.h:104: warning: its scope is only this definition or declaration, which is probably not what you want.
include/asm/pci.h: In function `pci_dma_burst_advice':
include/asm/pci.h:106: dereferencing pointer to incomplete type
include/asm/pci.h:106: `PCI_DMA_BURST_INFINITY' undeclared (first use in this function)
include/asm/pci.h:106: (Each undeclared identifier is reported only once
include/asm/pci.h:106: for each function it appears in.)
make[1]: *** [lib/iomap.o] Error 1

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 21:52:46 -07:00
David S. Miller
e24c2d963a [PATCH] PCI: DMA bursting advice
After seeing, at best, "guesses" as to the following kind
of information in several drivers, I decided that we really
need a way for platforms to specifically give advice in this
area for what works best with their PCI controller implementation.

Basically, this new interface gives DMA bursting advice on
PCI.  There are three forms of the advice:

1) Burst as much as possible, it is not necessary to end bursts
   on some particular boundary for best performance.

2) Burst on some byte count multiple.  A DMA burst to some multiple of
   number of bytes may be done, but it is important to end the burst
   on an exact multiple for best performance.

   The best example of this I am aware of are the PPC64 PCI
   controllers, where if you end a burst mid-cacheline then
   chip has to refetch the data and the IOMMU translations
   which hurts performance a lot.

3) Burst on a single byte count multiple.  Bursts shall end
   exactly on the next multiple boundary for best performance.

   Sparc64 and Alpha's PCI controllers operate this way.  They
   disconnect any device which tries to burst across a cacheline
   boundary.

   Actually, newer sparc64 PCI controllers do not have this behavior.
   That is why the "pdev" is passed into the interface, so I can
   add code later to check which PCI controller the system is using
   and give advice accordingly.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 21:52:45 -07:00
Linus Torvalds
d3b8a1a849 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6 2005-06-27 15:13:26 -07:00
David Brownell
65111084c6 [PATCH] USB: more omap_udc updates (dma and omap1710)
More omap_udc updates:

  * OMAP 1710 updates
      - new UDC bit for clearing endpoint toggle, affecting CLEAR_HALT
      - new OTG bits affecting wakeup
  * Fix the bug Vladimir noted, that IN-DMA transfer code path kicks in
    for under 1024 bytes (not "up to 1024 bytes")
  * Handle transceiver setup more intelligently
      - use transceiver whenever one's available; this can be handy
        for GPIO based, loopback, or transceiverless configs
      - cleanup correctly after the "unrecognized HMC" case
  * DMA performance tweaks
      - allow burst/pack for memory access
      - use 16 bit DMA access most of the time on TIPB
  * Add workarounds for some DMA errata (not observed "in the wild"):
      - DMA CSAC/CDAC reads returning zero
      - RX/TX DMA config registers bit 12 always reads as zero (TI patch)
  * More "sparse" warnings removed, notably "changing" the SETUP packet
    to return data in USB byteorder (an API change, null effect on OMAP
    except for these warnings).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-06-27 14:43:50 -07:00
Deepak Saxena
b46ffaefe3 [PATCH] ARM: 2759/1: Fix IXP4xx debug code (again)
Patch from Deepak Saxena

Accidently swapped the order of movne and orrne. Bad.

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-27 21:48:48 +01:00
Michael Burian
eb4e10d091 [PATCH] ARM: 2758/1: Fix comment in file header to read "ARM" instead i386
Patch from Michael Burian

This does not look like an include file for "i386", so use "ARM" instead.

Signed-off-by: Michael Burian <dynmail1@gassner-waagen.at>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-27 15:58:39 +01:00
Russell King
c79ebfa8d2 [PATCH] ARM: Fix speeling eroor in io.h
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-27 14:23:38 +01:00
Russell King
2ea83398b7 [PATCH] ARM: Add VST idle loop call
This call allows the dynamic tick support to reprogram the timer
immediately before the CPU idles.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-27 14:04:05 +01:00
Lennert Buytenhek
baaf7ed179 [PATCH] ARM: 2756/1: add ixp2000 msf mapping
Patch from Lennert Buytenhek

Add a mapping for the ixp2400 and ixp2800 msf unit.  The msf is the
ixp2000's 'media and switch fabric' unit, which handles the networking
part of the chip.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:17 +01:00
Lennert Buytenhek
67603be482 [PATCH] ARM: 2755/1: describe ixp2000 virtual memory map layout
Patch from Lennert Buytenhek

Add a comment to asm/arch-ixp2000/ixp2000-regs.h describing the
ixp2000 virtual memory map layout.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:16 +01:00
Lennert Buytenhek
15aca90363 [PATCH] ARM: 2754/1: move ixp2000 VMALLOC_END up
Patch from Lennert Buytenhek

As the ixdp cpld mappings now live at 0xfe000000, we can push
VMALLOC_END upwards to 0xfb000000, where the first iotable mapping
begins.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:14 +01:00
Lennert Buytenhek
91f6a589fb [PATCH] ARM: 2753/1: move ixdp* cpld mappings
Patch from Lennert Buytenhek

All ixdp platforms currently have a cpld mapped in at 0xfafff000.
Since this address is not 1M-aligned, a regular page mapping will be
used instead of a section mapping, which opens up the possibility of
triggering ixp2400 erratum #66 as we only do the XCB=101 workaround
thing for section mappings.
There is still a lot of space higher up in the virtual memory map
for 1M mappings, so move the cpld mapping to 0xfe000000 and make it
1M big so that a section mapping will be used for it.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-26 22:24:13 +01:00
Nick Piggin
4866cde064 [PATCH] sched: cleanup context switch locking
Instead of requiring architecture code to interact with the scheduler's
locking implementation, provide a couple of defines that can be used by the
architecture to request runqueue unlocked context switches, and ask for
interrupts to be enabled over the context switch.

Also replaces the "switch_lock" used by these architectures with an oncpu
flag (note, not a potentially slow bitflag).  This eliminates one bus
locked memory operation when context switching, and simplifies the
task_running function.

Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-25 16:24:43 -07:00
Russell King
8749af6821 [PATCH] ARM: Generic Dynamic Tick Timer support for ARM, take 4
This patch adds support for Dynamic Tick Timer for ARM. Dynamic Tick is
also known as VST (Variable Scheduling Timeouts).

Dynamic Tick has been in use in the OMAP tree since last October.  The
patch is not intrusive, and does not do anything unless CONFIG_NO_IDLE_HZ
is defined.  This patch has the following fixed based on comments from
RMK:
- Time is updated before calling interrupt handlers.
- Added new interrupt flag SA_TIMER to avoid duplicate timer interrupts
- Moved struct dyn_tick_timer to time.h until we at some point probably
  have an arch independent dyn-tick.h
- Cleaned up testing for DYN_TICK_ENABLED in irq.c

 I've cleaned up this patch to fix some remaining issues:
 - Call the timer tick handler with irqs disabled, as it would be from
   a normal interrupt
 - if we have a dyn_tick, we better implement all methods.
 - generic timer_dyn_reprogram() call, to be called before sleeping
 - added command line option - "dyntick=" to allow boot-time control
   of this feature
    -- rmk

Signed-off-by: Tony Lindgren
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25 19:39:45 +01:00
Lennert Buytenhek
321ab6a5fa [PATCH] ARM: 2752/1: disable ixp2000 PCI I/O software workaround on chips that don't need it
Patch from Lennert Buytenhek

The later ixp2000 models don't need the PCI I/O workaround that we
currently perform.  Add a config option to disable the workaround,
and panic on boot if a kernel without the workaround is booted on a
buggy chip.  As only pre-production ixp2000s need the workaround,
the default is for it not to be configured in.

Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25 19:30:04 +01:00