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 |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 8 | * arch_local_irq_*() functions from the lowlevel headers. |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 9 | */ |
| 10 | #ifndef _ASM_IRQFLAGS_H |
| 11 | #define _ASM_IRQFLAGS_H |
| 12 | |
| 13 | #ifndef __ASSEMBLY__ |
| 14 | |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 15 | #include <linux/types.h> |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 16 | |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 17 | extern void arch_local_irq_restore(unsigned long); |
| 18 | extern unsigned long arch_local_irq_save(void); |
| 19 | extern void arch_local_irq_enable(void); |
| 20 | |
| 21 | static inline unsigned long arch_local_save_flags(void) |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 22 | { |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 23 | unsigned long flags; |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 24 | |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 25 | asm volatile("rd %%psr, %0" : "=r" (flags)); |
| 26 | return flags; |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 27 | } |
| 28 | |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 29 | static inline void arch_local_irq_disable(void) |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 30 | { |
David Howells | df9ee29 | 2010-10-07 14:08:55 +0100 | [diff] [blame] | 31 | arch_local_irq_save(); |
| 32 | } |
| 33 | |
| 34 | static inline bool arch_irqs_disabled_flags(unsigned long flags) |
| 35 | { |
| 36 | return (flags & PSR_PIL) != 0; |
| 37 | } |
| 38 | |
| 39 | static inline bool arch_irqs_disabled(void) |
| 40 | { |
| 41 | return arch_irqs_disabled_flags(arch_local_save_flags()); |
Sam Ravnborg | a439fe5 | 2008-07-27 23:00:59 +0200 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | #endif /* (__ASSEMBLY__) */ |
| 45 | |
| 46 | #endif /* !(_ASM_IRQFLAGS_H) */ |