| Russell King | 7ad1bcb | 2006-08-27 12:07:02 +0100 | [diff] [blame] | 1 | #ifndef __ASM_ARM_IRQFLAGS_H |
| 2 | #define __ASM_ARM_IRQFLAGS_H |
| 3 | |
| 4 | #ifdef __KERNEL__ |
| 5 | |
| 6 | #include <asm/ptrace.h> |
| 7 | |
| 8 | /* |
| 9 | * CPU interrupt mask handling. |
| 10 | */ |
| 11 | #if __LINUX_ARM_ARCH__ >= 6 |
| 12 | |
| 13 | #define raw_local_irq_save(x) \ |
| 14 | ({ \ |
| 15 | __asm__ __volatile__( \ |
| 16 | "mrs %0, cpsr @ local_irq_save\n" \ |
| 17 | "cpsid i" \ |
| 18 | : "=r" (x) : : "memory", "cc"); \ |
| 19 | }) |
| 20 | |
| 21 | #define raw_local_irq_enable() __asm__("cpsie i @ __sti" : : : "memory", "cc") |
| 22 | #define raw_local_irq_disable() __asm__("cpsid i @ __cli" : : : "memory", "cc") |
| 23 | #define local_fiq_enable() __asm__("cpsie f @ __stf" : : : "memory", "cc") |
| 24 | #define local_fiq_disable() __asm__("cpsid f @ __clf" : : : "memory", "cc") |
| 25 | |
| 26 | #else |
| 27 | |
| 28 | /* |
| 29 | * Save the current interrupt enable state & disable IRQs |
| 30 | */ |
| 31 | #define raw_local_irq_save(x) \ |
| 32 | ({ \ |
| 33 | unsigned long temp; \ |
| 34 | (void) (&temp == &x); \ |
| 35 | __asm__ __volatile__( \ |
| 36 | "mrs %0, cpsr @ local_irq_save\n" \ |
| 37 | " orr %1, %0, #128\n" \ |
| 38 | " msr cpsr_c, %1" \ |
| 39 | : "=r" (x), "=r" (temp) \ |
| 40 | : \ |
| 41 | : "memory", "cc"); \ |
| 42 | }) |
| 43 | |
| 44 | /* |
| 45 | * Enable IRQs |
| 46 | */ |
| 47 | #define raw_local_irq_enable() \ |
| 48 | ({ \ |
| 49 | unsigned long temp; \ |
| 50 | __asm__ __volatile__( \ |
| 51 | "mrs %0, cpsr @ local_irq_enable\n" \ |
| 52 | " bic %0, %0, #128\n" \ |
| 53 | " msr cpsr_c, %0" \ |
| 54 | : "=r" (temp) \ |
| 55 | : \ |
| 56 | : "memory", "cc"); \ |
| 57 | }) |
| 58 | |
| 59 | /* |
| 60 | * Disable IRQs |
| 61 | */ |
| 62 | #define raw_local_irq_disable() \ |
| 63 | ({ \ |
| 64 | unsigned long temp; \ |
| 65 | __asm__ __volatile__( \ |
| 66 | "mrs %0, cpsr @ local_irq_disable\n" \ |
| 67 | " orr %0, %0, #128\n" \ |
| 68 | " msr cpsr_c, %0" \ |
| 69 | : "=r" (temp) \ |
| 70 | : \ |
| 71 | : "memory", "cc"); \ |
| 72 | }) |
| 73 | |
| 74 | /* |
| 75 | * Enable FIQs |
| 76 | */ |
| 77 | #define local_fiq_enable() \ |
| 78 | ({ \ |
| 79 | unsigned long temp; \ |
| 80 | __asm__ __volatile__( \ |
| 81 | "mrs %0, cpsr @ stf\n" \ |
| 82 | " bic %0, %0, #64\n" \ |
| 83 | " msr cpsr_c, %0" \ |
| 84 | : "=r" (temp) \ |
| 85 | : \ |
| 86 | : "memory", "cc"); \ |
| 87 | }) |
| 88 | |
| 89 | /* |
| 90 | * Disable FIQs |
| 91 | */ |
| 92 | #define local_fiq_disable() \ |
| 93 | ({ \ |
| 94 | unsigned long temp; \ |
| 95 | __asm__ __volatile__( \ |
| 96 | "mrs %0, cpsr @ clf\n" \ |
| 97 | " orr %0, %0, #64\n" \ |
| 98 | " msr cpsr_c, %0" \ |
| 99 | : "=r" (temp) \ |
| 100 | : \ |
| 101 | : "memory", "cc"); \ |
| 102 | }) |
| 103 | |
| 104 | #endif |
| 105 | |
| 106 | /* |
| 107 | * Save the current interrupt enable state. |
| 108 | */ |
| 109 | #define raw_local_save_flags(x) \ |
| 110 | ({ \ |
| 111 | __asm__ __volatile__( \ |
| 112 | "mrs %0, cpsr @ local_save_flags" \ |
| 113 | : "=r" (x) : : "memory", "cc"); \ |
| 114 | }) |
| 115 | |
| 116 | /* |
| 117 | * restore saved IRQ & FIQ state |
| 118 | */ |
| 119 | #define raw_local_irq_restore(x) \ |
| 120 | __asm__ __volatile__( \ |
| 121 | "msr cpsr_c, %0 @ local_irq_restore\n" \ |
| 122 | : \ |
| 123 | : "r" (x) \ |
| 124 | : "memory", "cc") |
| 125 | |
| 126 | #define raw_irqs_disabled_flags(flags) \ |
| 127 | ({ \ |
| 128 | (int)((flags) & PSR_I_BIT); \ |
| 129 | }) |
| 130 | |
| 131 | #endif |
| 132 | #endif |