diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-28 08:33:25 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-28 08:33:25 -0700 |
commit | c32f1a34ff1097110469a240ea4539dc9c101e96 (patch) | |
tree | eda863205e83afe54cbedcf15cdac416cdec2cf5 /arch/sparc/include/asm/irqflags_64.h | |
parent | 4f31f3080943c7e3541f07df326f06d598a067d0 (diff) | |
parent | 04d91cb8163f7f946e348b2362a6e5dfa5f06b13 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc: Set CONFIG_HAVE_ARCH_TRACEHOOK
sparc: Add task_pt_regs().
sparc: Add call to tracehook_signal_handler().
sparc: Create and use TIF_NOTIFY_RESUME.
sparc: Use tracehook routines in syscall_trace().
sparc64: tracehook: CONFIG_HAVE_ARCH_TRACEHOOK
sparc: Add user_stack_pointer().
sparc64: tracehook_signal_handler
sparc64: tracehook: TIF_NOTIFY_RESUME
sparc: Add asm/syscall.h
sparc64: tracehook syscall
sparc: enable headers_export again
sparc, sparc64: use arch/sparc/include
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 00000000000..bb42e59162a --- /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) */ |