projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| afbfb52e PM |
1 | #ifndef __ASM_SH_IRQFLAGS_H |
| 2 | #define __ASM_SH_IRQFLAGS_H | |
| 3 | ||
| 4 | static inline void raw_local_irq_enable(void) | |
| 5 | { | |
| 6 | unsigned long __dummy0, __dummy1; | |
| 7 | ||
| 8 | __asm__ __volatile__ ( | |
| 9 | "stc sr, %0\n\t" | |
| 10 | "and %1, %0\n\t" | |
| 11 | #ifdef CONFIG_CPU_HAS_SR_RB | |
| 12 | "stc r6_bank, %1\n\t" | |
| 13 | "or %1, %0\n\t" | |
| 14 | #endif | |
| 15 | "ldc %0, sr\n\t" | |
| 16 | : "=&r" (__dummy0), "=r" (__dummy1) | |
| 17 | : "1" (~0x000000f0) | |
| 18 | : "memory" | |
| 19 | ); | |
| 20 | } | |
| 21 | ||
| 22 | static inline void raw_local_irq_disable(void) | |
| 23 | { | |
| 24 | unsigned long flags; | |
| 25 | ||
| 26 | __asm__ __volatile__ ( | |
| 27 | "stc sr, %0\n\t" | |
| 28 | "or #0xf0, %0\n\t" | |
| 29 | "ldc %0, sr\n\t" | |
| 30 | : "=&z" (flags) | |
| 31 | : /* no inputs */ | |
| 32 | : "memory" | |
| 33 | ); | |
| 34 | } | |
| 35 | ||
| 36 | static inline void set_bl_bit(void) | |
| 37 | { | |
| 38 | unsigned long __dummy0, __dummy1; | |
| 39 | ||
| 40 | __asm__ __volatile__ ( | |
| 41 | "stc sr, %0\n\t" | |
| 42 | "or %2, %0\n\t" | |
| 43 | "and %3, %0\n\t" | |
| 44 | "ldc %0, sr\n\t" | |
| 45 | : "=&r" (__dummy0), "=r" (__dummy1) | |
| 46 | : "r" (0x10000000), "r" (0xffffff0f) | |
| 47 | : "memory" | |
| 48 | ); | |
| 49 | } | |
| 50 | ||
| 51 | static inline void clear_bl_bit(void) | |
| 52 | { | |
| 53 | unsigned long __dummy0, __dummy1; | |
| 54 | ||
| 55 | __asm__ __volatile__ ( | |
| 56 | "stc sr, %0\n\t" | |
| 57 | "and %2, %0\n\t" | |
| 58 | "ldc %0, sr\n\t" | |
| 59 | : "=&r" (__dummy0), "=r" (__dummy1) | |
| 60 | : "1" (~0x10000000) | |
| 61 | : "memory" | |
| 62 | ); | |
| 63 | } | |
| 64 | ||
| 65 | static inline unsigned long __raw_local_save_flags(void) | |
| 66 | { | |
| 67 | unsigned long flags; | |
| 68 | ||
| 69 | __asm__ __volatile__ ( | |
| 70 | "stc sr, %0\n\t" | |
| 71 | "and #0xf0, %0\n\t" | |
| 72 | : "=&z" (flags) | |
| 73 | : /* no inputs */ | |
| 74 | : "memory" | |
| 75 | ); | |
| 76 | ||
| 77 | return flags; | |
| 78 | } | |
| 79 | ||
| 80 | #define raw_local_save_flags(flags) \ | |
| 81 | do { (flags) = __raw_local_save_flags(); } while (0) | |
| 82 | ||
| 83 | static inline int raw_irqs_disabled_flags(unsigned long flags) | |
| 84 | { | |
| 85 | return (flags != 0); | |
| 86 | } | |
| 87 | ||
| 88 | static inline int raw_irqs_disabled(void) | |
| 89 | { | |
| 90 | unsigned long flags = __raw_local_save_flags(); | |
| 91 | ||
| 92 | return raw_irqs_disabled_flags(flags); | |
| 93 | } | |
| 94 | ||
| 95 | static inline unsigned long __raw_local_irq_save(void) | |
| 96 | { | |
| 97 | unsigned long flags, __dummy; | |
| 98 | ||
| 99 | __asm__ __volatile__ ( | |
| 100 | "stc sr, %1\n\t" | |
| 101 | "mov %1, %0\n\t" | |
| 102 | "or #0xf0, %0\n\t" | |
| 103 | "ldc %0, sr\n\t" | |
| 104 | "mov %1, %0\n\t" | |
| 105 | "and #0xf0, %0\n\t" | |
| 106 | : "=&z" (flags), "=&r" (__dummy) | |
| 107 | : /* no inputs */ | |
| 108 | : "memory" | |
| 109 | ); | |
| 110 | ||
| 111 | return flags; | |
| 112 | } | |
| 113 | ||
| 114 | #define raw_local_irq_save(flags) \ | |
| 115 | do { (flags) = __raw_local_irq_save(); } while (0) | |
| 116 | ||
| 117 | static inline void raw_local_irq_restore(unsigned long flags) | |
| 118 | { | |
| 119 | if ((flags & 0xf0) != 0xf0) | |
| 120 | raw_local_irq_enable(); | |
| 121 | } | |
| 122 | ||
| 123 | #endif /* __ASM_SH_IRQFLAGS_H */ |