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author | Ingo Molnar <mingo@elte.hu> | 2008-07-31 12:38:04 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-31 12:38:04 +0200 |
commit | 5fbf24659b75356e2142e1f1b88f67b34cbc3e75 (patch) | |
tree | 0e470e4cc89b72e3d74939f8c39396a6a0bebb3a /arch/sparc/include/asm/irqflags_64.h | |
parent | d89961e2dc87b6e30b8e3f60bd2af5cd92cf4643 (diff) | |
parent | 6e86841d05f371b5b9b86ce76c02aaee83352298 (diff) | |
download | op-kernel-dev-5fbf24659b75356e2142e1f1b88f67b34cbc3e75.zip op-kernel-dev-5fbf24659b75356e2142e1f1b88f67b34cbc3e75.tar.gz |
Merge branch 'linus' into x86/xen
Diffstat (limited to 'arch/sparc/include/asm/irqflags_64.h')
-rw-r--r-- | arch/sparc/include/asm/irqflags_64.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/irqflags_64.h b/arch/sparc/include/asm/irqflags_64.h new file mode 100644 index 0000000..bb42e59 --- /dev/null +++ b/arch/sparc/include/asm/irqflags_64.h @@ -0,0 +1,89 @@ +/* + * include/asm/irqflags.h + * + * IRQ flags handling + * + * This file gets included from lowlevel asm headers too, to provide + * wrapped versions of the local_irq_*() APIs, based on the + * raw_local_irq_*() functions from the lowlevel headers. + */ +#ifndef _ASM_IRQFLAGS_H +#define _ASM_IRQFLAGS_H + +#ifndef __ASSEMBLY__ + +static inline unsigned long __raw_local_save_flags(void) +{ + unsigned long flags; + + __asm__ __volatile__( + "rdpr %%pil, %0" + : "=r" (flags) + ); + + return flags; +} + +#define raw_local_save_flags(flags) \ + do { (flags) = __raw_local_save_flags(); } while (0) + +static inline void raw_local_irq_restore(unsigned long flags) +{ + __asm__ __volatile__( + "wrpr %0, %%pil" + : /* no output */ + : "r" (flags) + : "memory" + ); +} + +static inline void raw_local_irq_disable(void) +{ + __asm__ __volatile__( + "wrpr 15, %%pil" + : /* no outputs */ + : /* no inputs */ + : "memory" + ); +} + +static inline void raw_local_irq_enable(void) +{ + __asm__ __volatile__( + "wrpr 0, %%pil" + : /* no outputs */ + : /* no inputs */ + : "memory" + ); +} + +static inline int raw_irqs_disabled_flags(unsigned long flags) +{ + return (flags > 0); +} + +static inline int raw_irqs_disabled(void) +{ + unsigned long flags = __raw_local_save_flags(); + + return raw_irqs_disabled_flags(flags); +} + +/* + * For spinlocks, etc: + */ +static inline unsigned long __raw_local_irq_save(void) +{ + unsigned long flags = __raw_local_save_flags(); + + raw_local_irq_disable(); + + return flags; +} + +#define raw_local_irq_save(flags) \ + do { (flags) = __raw_local_irq_save(); } while (0) + +#endif /* (__ASSEMBLY__) */ + +#endif /* !(_ASM_IRQFLAGS_H) */ |