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author | David S. Miller <davem@davemloft.net> | 2006-11-16 21:38:57 (GMT) |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-10 10:39:09 (GMT) |
commit | 10e267234cc0133bc9ed26bc34eb09de90c248c0 (patch) | |
tree | 8493e2767e1752f5873e50cc899a4c701cc55fbb /include/asm-sparc64/irqflags.h | |
parent | af1713e0f111647052953ba12fd10a59c74a5dde (diff) | |
download | linux-fsl-qoriq-10e267234cc0133bc9ed26bc34eb09de90c248c0.tar.xz |
[SPARC64]: Add irqtrace/stacktrace/lockdep support.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64/irqflags.h')
-rw-r--r-- | include/asm-sparc64/irqflags.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/asm-sparc64/irqflags.h b/include/asm-sparc64/irqflags.h new file mode 100644 index 0000000..024fc54 --- /dev/null +++ b/include/asm-sparc64/irqflags.h @@ -0,0 +1,89 @@ +/* + * include/asm-sparc64/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) */ |