Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * include/asm/irqflags.h |
| 3 | * |
| 4 | * IRQ flags handling |
| 5 | * |
| 6 | * This file gets included from lowlevel asm headers too, to provide |
| 7 | * wrapped versions of the local_irq_*() APIs, based on the |
| 8 | * raw_local_irq_*() functions from the lowlevel headers. |
| 9 | */ |
| 10 | #ifndef _ASM_IRQFLAGS_H |
| 11 | #define _ASM_IRQFLAGS_H |
| 12 | |
| 13 | #ifndef __ASSEMBLY__ |
| 14 | |
| 15 | extern void raw_local_irq_restore(unsigned long); |
| 16 | extern unsigned long __raw_local_irq_save(void); |
| 17 | extern void raw_local_irq_enable(void); |
| 18 | |
| 19 | static inline unsigned long getipl(void) |
| 20 | { |
| 21 | unsigned long retval; |
| 22 | |
| 23 | __asm__ __volatile__("rd %%psr, %0" : "=r" (retval)); |
| 24 | return retval; |
| 25 | } |
| 26 | |
| 27 | #define raw_local_save_flags(flags) ((flags) = getipl()) |
| 28 | #define raw_local_irq_save(flags) ((flags) = __raw_local_irq_save()) |
| 29 | #define raw_local_irq_disable() ((void) __raw_local_irq_save()) |
| 30 | #define raw_irqs_disabled() ((getipl() & PSR_PIL) != 0) |
| 31 | |
| 32 | static inline int raw_irqs_disabled_flags(unsigned long flags) |
| 33 | { |
| 34 | return ((flags & PSR_PIL) != 0); |
| 35 | } |
| 36 | |
| 37 | #endif /* (__ASSEMBLY__) */ |
| 38 | |
| 39 | #endif /* !(_ASM_IRQFLAGS_H) */ |