Heiko Carstens | 1f194a4 | 2006-07-03 00:24:46 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * include/asm-s390/irqflags.h |
| 3 | * |
| 4 | * Copyright (C) IBM Corp. 2006 |
| 5 | * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> |
| 6 | */ |
| 7 | |
| 8 | #ifndef __ASM_IRQFLAGS_H |
| 9 | #define __ASM_IRQFLAGS_H |
| 10 | |
| 11 | #ifdef __KERNEL__ |
| 12 | |
| 13 | /* interrupt control.. */ |
| 14 | #define raw_local_irq_enable() ({ \ |
| 15 | unsigned long __dummy; \ |
| 16 | __asm__ __volatile__ ( \ |
| 17 | "stosm 0(%1),0x03" \ |
| 18 | : "=m" (__dummy) : "a" (&__dummy) : "memory" ); \ |
| 19 | }) |
| 20 | |
| 21 | #define raw_local_irq_disable() ({ \ |
| 22 | unsigned long __flags; \ |
| 23 | __asm__ __volatile__ ( \ |
| 24 | "stnsm 0(%1),0xfc" : "=m" (__flags) : "a" (&__flags) ); \ |
| 25 | __flags; \ |
| 26 | }) |
| 27 | |
| 28 | #define raw_local_save_flags(x) \ |
| 29 | __asm__ __volatile__("stosm 0(%1),0" : "=m" (x) : "a" (&x), "m" (x) ) |
| 30 | |
| 31 | #define raw_local_irq_restore(x) \ |
| 32 | __asm__ __volatile__("ssm 0(%0)" : : "a" (&x), "m" (x) : "memory") |
| 33 | |
| 34 | #define raw_irqs_disabled() \ |
| 35 | ({ \ |
| 36 | unsigned long flags; \ |
| 37 | local_save_flags(flags); \ |
| 38 | !((flags >> __FLAG_SHIFT) & 3); \ |
| 39 | }) |
| 40 | |
| 41 | static inline int raw_irqs_disabled_flags(unsigned long flags) |
| 42 | { |
| 43 | return !((flags >> __FLAG_SHIFT) & 3); |
| 44 | } |
| 45 | |
| 46 | /* For spinlocks etc */ |
| 47 | #define raw_local_irq_save(x) ((x) = raw_local_irq_disable()) |
| 48 | |
| 49 | #endif /* __KERNEL__ */ |
| 50 | #endif /* __ASM_IRQFLAGS_H */ |