diff options
| author | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:27 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-05-11 14:44:31 +0200 |
| commit | 41fb454ebe6024f5c1e3b3cbc0abc0da762e7b51 (patch) | |
| tree | 51c50bcb67a5039448ddfa1869d7948cab1217e9 /arch/microblaze/include/asm/irqflags.h | |
| parent | 19c1a6f5764d787113fa323ffb18be7991208f82 (diff) | |
| parent | 091bf7624d1c90cec9e578a18529f615213ff847 (diff) | |
Merge commit 'v2.6.30-rc5' into core/iommu
Merge reason: core/iommu was on an .30-rc1 base,
update it to .30-rc5 to refresh.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/microblaze/include/asm/irqflags.h')
| -rw-r--r-- | arch/microblaze/include/asm/irqflags.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/irqflags.h b/arch/microblaze/include/asm/irqflags.h new file mode 100644 index 000000000000..dea65645a4f8 --- /dev/null +++ b/arch/microblaze/include/asm/irqflags.h @@ -0,0 +1,123 @@ +/* + * Copyright (C) 2006 Atmark Techno, Inc. + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + */ + +#ifndef _ASM_MICROBLAZE_IRQFLAGS_H +#define _ASM_MICROBLAZE_IRQFLAGS_H + +#include <linux/irqflags.h> + +# if CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR + +# define local_irq_save(flags) \ + do { \ + asm volatile ("# local_irq_save \n\t" \ + "msrclr %0, %1 \n\t" \ + "nop \n\t" \ + : "=r"(flags) \ + : "i"(MSR_IE) \ + : "memory"); \ + } while (0) + +# define local_irq_disable() \ + do { \ + asm volatile ("# local_irq_disable \n\t" \ + "msrclr r0, %0 \n\t" \ + "nop \n\t" \ + : \ + : "i"(MSR_IE) \ + : "memory"); \ + } while (0) + +# define local_irq_enable() \ + do { \ + asm volatile ("# local_irq_enable \n\t" \ + "msrset r0, %0 \n\t" \ + "nop \n\t" \ + : \ + : "i"(MSR_IE) \ + : "memory"); \ + } while (0) + +# else /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR == 0 */ + +# define local_irq_save(flags) \ + do { \ + register unsigned tmp; \ + asm volatile ("# local_irq_save \n\t" \ + "mfs %0, rmsr \n\t" \ + "nop \n\t" \ + "andi %1, %0, %2 \n\t" \ + "mts rmsr, %1 \n\t" \ + "nop \n\t" \ + : "=r"(flags), "=r" (tmp) \ + : "i"(~MSR_IE) \ + : "memory"); \ + } while (0) + +# define local_irq_disable() \ + do { \ + register unsigned tmp; \ + asm volatile ("# local_irq_disable \n\t" \ + "mfs %0, rmsr \n\t" \ + "nop \n\t" \ + "andi %0, %0, %1 \n\t" \ + "mts rmsr, %0 \n\t" \ + "nop \n\t" \ + : "=r"(tmp) \ + : "i"(~MSR_IE) \ + : "memory"); \ + } while (0) + +# define local_irq_enable() \ + do { \ + register unsigned tmp; \ + asm volatile ("# local_irq_enable \n\t" \ + "mfs %0, rmsr \n\t" \ + "nop \n\t" \ + "ori %0, %0, %1 \n\t" \ + "mts rmsr, %0 \n\t" \ + "nop \n\t" \ + : "=r"(tmp) \ + : "i"(MSR_IE) \ + : "memory"); \ + } while (0) + +# endif /* CONFIG_XILINX_MICROBLAZE0_USE_MSR_INSTR */ + +#define local_save_flags(flags) \ + do { \ + asm volatile ("# local_save_flags \n\t" \ + "mfs %0, rmsr \n\t" \ + "nop \n\t" \ + : "=r"(flags) \ + : \ + : "memory"); \ + } while (0) + +#define local_irq_restore(flags) \ + do { \ + asm volatile ("# local_irq_restore \n\t"\ + "mts rmsr, %0 \n\t" \ + "nop \n\t" \ + : \ + : "r"(flags) \ + : "memory"); \ + } while (0) + +static inline int irqs_disabled(void) +{ + unsigned long flags; + + local_save_flags(flags); + return ((flags & MSR_IE) == 0); +} + +#define raw_irqs_disabled irqs_disabled +#define raw_irqs_disabled_flags(flags) ((flags) == 0) + +#endif /* _ASM_MICROBLAZE_IRQFLAGS_H */ |