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path: root/include/asm-arm/system.h
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2007-03-02[ARM] 4241/1: Define mb() as compiler barrier on a uniprocessor systemCatalin Marinas
Currently, the mb() is defined as a DMB operation on ARMv6, even for UP systems. This patch defines mb() as a compiler barrier only. For the SMP case, the smp_* variants should be used anyway and the patch defines them as DMB. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-08[ARM] 4133/1: Add ISB after changes to CP15 registersCatalin Marinas
According to ARM ARM, changes to the CP15 registers are only guaranteed to be visible after an Instruction Synchronization Barrier (ISB). This patch adds the ISB at the end of set_cr and set_copro_access functions and also moves them further down in the file, below the isb macro definition. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-02-08[ARM] 4126/1: Add the ARM specific barriersCatalin Marinas
There are three barriers - ISB, DMB and DSB for different scenarious. This patch adds their definitions in the system.h file. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-18[ARM] Fix warnings from asm/system.hRussell King
Move adjust_cr() into arch/arm/mm/mmu.c, and move irqflags.h to a more appropriate place in the header file. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-13[ARM] Provide a method to alter the control registerRussell King
i.MX needs to tweak the control register to support CPU frequency scaling. Rather than have folk blindly try and change the control register by writing to it and then wondering why it doesn't work, provide a method (which is safe for UP only, and therefore only available for UP) to achieve this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-12-08[ARM] Handle HWCAP_VFP in VFP support codeRussell King
Don't set HWCAP_VFP in the processor support file; not only does it depend on the processor features, but it also depends on the support code being present. Therefore, only set it if the support code detects that we have a VFP coprocessor attached. Also, move the VFP handling of the coprocessor access register into the VFP support code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-27[ARM] nommu: manage the CP15 thingsHyok S. Choi
All the current CP15 access codes in ARM arch can be categorized and conditioned by the defines as follows: Related operation Safe condition a. any CP15 access !CPU_CP15 b. alignment trap CPU_CP15_MMU c. D-cache(C-bit) CPU_CP15 d. I-cache CPU_CP15 && !( CPU_ARM610 || CPU_ARM710 || CPU_ARM720 || CPU_ARM740 || CPU_XSCALE || CPU_XSC3 ) e. alternate vector CPU_CP15 && !CPU_ARM740 f. TTB CPU_CP15_MMU g. Domain CPU_CP15_MMU h. FSR/FAR CPU_CP15_MMU For example, alternate vector is supported if and only if "CPU_CP15 && !CPU_ARM740" is satisfied. Signed-off-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-25[ARM] 3852/1: convert atomic bitops and __xchg over to ↵Lennert Buytenhek
raw_local_irq_{save,restore} Thomas Gleixner noticed that bitops.h should also use the raw_* irq disable/enable variants, and __xchg needs them as well. Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-09-20[ARM] Add ARM irqtrace supportRussell King
This adds support for irqtrace for lockdep on ARM. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-07-14[PATCH] remove set_wmb - arch removalSteven Rostedt
set_wmb should not be used in the kernel because it just confuses the code more and has no benefit. Since it is not currently used in the kernel this patch removes it so that new code does not include it. All archs define set_wmb(var, value) to do { var = value; wmb(); } while(0) except ia64 and sparc which use a mb() instead. But this is still moot since it is not used anyway. Hasn't been tested on any archs but x86 and x86_64 (and only compiled tested) Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-20Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (42 commits) [ARM] Fix tosa build error [ARM] 3610/1: Make reboot work on Versatile [ARM] 3609/1: S3C24XX: defconfig update for s3c2410_defconfig [ARM] 3591/1: Anubis: IDE device definitions [ARM] Include asm/hardware.h not asm/arch/hardware.h [ARM] 3594/1: Poodle: Add touchscreen support + other updates [ARM] 3564/1: sharpsl_pm: Abstract some machine specific parameters [ARM] 3561/1: Poodle: Correct the MMC/SD power control [ARM] 3593/1: Add reboot and shutdown handlers for Zaurus handhelds [ARM] 3599/1: AT91RM9200 remove global variables [ARM] 3607/1: AT91RM9200 misc fixes [ARM] 3605/1: AT91RM9200 Power Management [ARM] 3604/1: AT91RM9200 New boards [ARM] 3603/1: AT91RM9200 remove old files [ARM] 3592/1: AT91RM9200 Serial driver update [ARM] 3590/1: AT91RM9200 Platform devices support [ARM] 3589/1: AT91RM9200 DK/EK board update [ARM] 3588/1: AT91RM9200 CSB337/637 board update [ARM] 3587/1: AT91RM9200 hardware headers [ARM] 3586/1: AT91RM9200 header update ...
2006-06-20Merge git://git.infradead.org/hdrcleanup-2.6Linus Torvalds
* git://git.infradead.org/hdrcleanup-2.6: (63 commits) [S390] __FD_foo definitions. Switch to __s32 types in joystick.h instead of C99 types for consistency. Add <sys/types.h> to headers included for userspace in <linux/input.h> Move inclusion of <linux/compat.h> out of user scope in asm-x86_64/mtrr.h Remove struct fddi_statistics from user view in <linux/if_fddi.h> Move user-visible parts of drivers/s390/crypto/z90crypt.h to include/asm-s390 Revert include/media changes: Mauro says those ioctls are only used in-kernel(!) Include <linux/types.h> and use __uXX types in <linux/cramfs_fs.h> Use __uXX types in <linux/i2o_dev.h>, include <linux/ioctl.h> too Remove private struct dx_hash_info from public view in <linux/ext3_fs.h> Include <linux/types.h> and use __uXX types in <linux/affs_hardblocks.h> Use __uXX types in <linux/divert.h> for struct divert_blk et al. Use __u32 for elf_addr_t in <asm-powerpc/elf.h>, not u32. It's user-visible. Remove PPP_FCS from user view in <linux/ppp_defs.h>, remove __P mess entirely Use __uXX types in user-visible structures in <linux/nbd.h> Don't use 'u32' in user-visible struct ip_conntrack_old_tuple. Use __uXX types for S390 DASD volume label definitions which are user-visible S390 BIODASDREADCMB ioctl should use __u64 not u64 type. Remove unneeded inclusion of <linux/time.h> from <linux/ufs_fs.h> Fix private integer types used in V4L2 ioctls. ... Manually resolve conflict in include/linux/mtd/physmap.h
2006-06-19[ARM] 3593/1: Add reboot and shutdown handlers for Zaurus handheldsRichard Purdie
Patch from Richard Purdie Add functionality to allow machine specific reboot handlers on ARM. Add machine specific reboot and poweroff handlers for all PXA Zaurus models. Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-05-31[PATCH] ARM: Fix XScale PMD settingDeepak Saxena
The ARM Architecture Reference Manual lists bit 4 of the PMD as "implementation defined" and it must be set to zero on Intel XScale CPUs or the cache does not behave properly. Found by Mike Rapoport while debugging a flash issue on the PXA255: http://marc.10east.com/?l=linux-arm-kernel&m=114845287600782&w=1 Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-04-26Don't include linux/config.h from anywhere else in include/David Woodhouse
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2006-03-28[ARM] 3377/2: add support for intel xsc3 coreLennert Buytenhek
Patch from Lennert Buytenhek This patch adds support for the new XScale v3 core. This is an ARMv5 ISA core with the following additions: - L2 cache - I/O coherency support (on select chipsets) - Low-Locality Reference cache attributes (replaces mini-cache) - Supersections (v6 compatible) - 36-bit addressing (v6 compatible) - Single instruction cache line clean/invalidate - LRU cache replacement (vs round-robin) I attempted to merge the XSC3 support into proc-xscale.S, but XSC3 cores have separate errata and have to handle things like L2, so it is simpler to keep it separate. L2 cache support is currently a build option because the L2 enable bit must be set before we enable the MMU and there is no easy way to capture command line parameters at this point. There are still optimizations that can be done such as using LLR for copypage (in theory using the exisiting mini-cache code) but those can be addressed down the road. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-03-15[ARM] 3364/1: [cleanup] warning fix - definitions for enable_hlt and disable_hltBen Dooks
Patch from Ben Dooks The enable_hlt and disable_hlt should be declared in include/asm/setup.h. This fixes sparse errors from arch/arm/kernel/process.c Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2006-01-12[PATCH] arm: task_thread_info()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-01-12[PATCH] sched: add cacheflush() asmIngo Molnar
Add per-arch sched_cacheflush() which is a write-back cacheflush used by the migration-cost calibration code at bootup time. Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-11-16[ARM] No need to include asm/proc-fns.h into asm/system.hRussell King
In the old days when arm26/arm32 was combined into the same architecture, proc-fns.h provided the xchg implementation for arm26 CPUs. Since we no longer combine these two, this include is no longer required. Remove it. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-07-26[PATCH] ARM SMP: Add ARMv6 memory barriersRussell King
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[PATCH] ARM SMP: Use exclusive load/store for __xchgRussell King
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-30[PATCH] ARM: Don't try to send a signal to pid0Russell King
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>
2005-06-28[PATCH] ARM SMP: __xchg supportRussell King
This enables the existing __xchg implementation to be used on SMP. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-25[PATCH] sched: cleanup context switch lockingNick Piggin
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>
2005-06-21[PATCH] arm: irqs_disabled() type fixAndrew Morton
kernel/sched.c: In function `__might_sleep': kernel/sched.c:5461: warning: int format, long unsigned int arg (arg 3) We expect irqs_disabled() to return an int (poor man's bool). Acked-by: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-19[PATCH] ARM SMP: Fix PXA/SA11x0 suspend resume crashRussell King
We need to re-initialise the stack pointers for undefined, IRQ and abort mode handlers whenever we resume. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-04-17[PATCH] ARM: showregsRussell King
Fix show_regs() to provide a backtrace. Provide a new __show_regs() function which implements the common subset of show_regs() and die(). Add prototypes to asm-arm/system.h Signed-off-by: Russell King <rmk@arm.linux.org.uk>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!