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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-08-03 10:39:02 -0700 |
commit | 7e31aa11fc672bbe0dd0da59513c9efe3809ced7 (patch) | |
tree | 0aafe6a0045230950ce6b26579a053da12614a49 /arch/arm/include/asm/irqflags.h | |
parent | 071f4924844c435a3ae0cdbab7d7df2f1da85713 (diff) | |
parent | 9cb7117fa4858468014f76bd996076985111e955 (diff) | |
download | linux-7e31aa11fc672bbe0dd0da59513c9efe3809ced7.tar.gz |
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm:
[ARM] 5182/1: pxa: Fix pcm990 compilation
[ARM] Fix explicit asm(-arm)?/arch-foo references
[ARM] move include/asm-arm to arch/arm/include/asm
[ARM] Remove explicit dependency for misc.o from compressed/Makefile
[ARM] initrd: claim initrd memory exclusively
[ARM] pxa: add support for L2 outer cache on XScale3 (attempt 2)
[ARM] 5180/1: at91: Fix at91_nand -> atmel_nand rename fallout
[ARM] add Sascha Hauer as Freescale i.MX Maintainer
[ARM] i.MX: add missing clock functions exports
[ARM] i.MX: remove set_imx_fb_info() export
[ARM] mx1ads: make mmc platform data available for modules
[ARM] mx2: add missing Kconfig dependency
Diffstat (limited to 'arch/arm/include/asm/irqflags.h')
-rw-r--r-- | arch/arm/include/asm/irqflags.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/arch/arm/include/asm/irqflags.h b/arch/arm/include/asm/irqflags.h new file mode 100644 index 000000000000..6d09974e6646 --- /dev/null +++ b/arch/arm/include/asm/irqflags.h @@ -0,0 +1,132 @@ +#ifndef __ASM_ARM_IRQFLAGS_H +#define __ASM_ARM_IRQFLAGS_H + +#ifdef __KERNEL__ + +#include <asm/ptrace.h> + +/* + * CPU interrupt mask handling. + */ +#if __LINUX_ARM_ARCH__ >= 6 + +#define raw_local_irq_save(x) \ + ({ \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ local_irq_save\n" \ + "cpsid i" \ + : "=r" (x) : : "memory", "cc"); \ + }) + +#define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc") +#define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc") +#define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc") +#define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc") + +#else + +/* + * Save the current interrupt enable state & disable IRQs + */ +#define raw_local_irq_save(x) \ + ({ \ + unsigned long temp; \ + (void) (&temp == &x); \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ local_irq_save\n" \ +" orr %1, %0, #128\n" \ +" msr cpsr_c, %1" \ + : "=r" (x), "=r" (temp) \ + : \ + : "memory", "cc"); \ + }) + +/* + * Enable IRQs + */ +#define raw_local_irq_enable() \ + ({ \ + unsigned long temp; \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ local_irq_enable\n" \ +" bic %0, %0, #128\n" \ +" msr cpsr_c, %0" \ + : "=r" (temp) \ + : \ + : "memory", "cc"); \ + }) + +/* + * Disable IRQs + */ +#define raw_local_irq_disable() \ + ({ \ + unsigned long temp; \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ local_irq_disable\n" \ +" orr %0, %0, #128\n" \ +" msr cpsr_c, %0" \ + : "=r" (temp) \ + : \ + : "memory", "cc"); \ + }) + +/* + * Enable FIQs + */ +#define local_fiq_enable() \ + ({ \ + unsigned long temp; \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ stf\n" \ +" bic %0, %0, #64\n" \ +" msr cpsr_c, %0" \ + : "=r" (temp) \ + : \ + : "memory", "cc"); \ + }) + +/* + * Disable FIQs + */ +#define local_fiq_disable() \ + ({ \ + unsigned long temp; \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ clf\n" \ +" orr %0, %0, #64\n" \ +" msr cpsr_c, %0" \ + : "=r" (temp) \ + : \ + : "memory", "cc"); \ + }) + +#endif + +/* + * Save the current interrupt enable state. + */ +#define raw_local_save_flags(x) \ + ({ \ + __asm__ __volatile__( \ + "mrs %0, cpsr @ local_save_flags" \ + : "=r" (x) : : "memory", "cc"); \ + }) + +/* + * restore saved IRQ & FIQ state + */ +#define raw_local_irq_restore(x) \ + __asm__ __volatile__( \ + "msr cpsr_c, %0 @ local_irq_restore\n" \ + : \ + : "r" (x) \ + : "memory", "cc") + +#define raw_irqs_disabled_flags(flags) \ +({ \ + (int)((flags) & PSR_I_BIT); \ +}) + +#endif +#endif |