diff options
Diffstat (limited to 'include/asm-mips/interrupt.h')
| -rw-r--r-- | include/asm-mips/interrupt.h | 137 |
1 files changed, 84 insertions, 53 deletions
diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h index e8357f5379fa..a5735761f5e5 100644 --- a/include/asm-mips/interrupt.h +++ b/include/asm-mips/interrupt.h | |||
| @@ -11,20 +11,25 @@ | |||
| 11 | #ifndef _ASM_INTERRUPT_H | 11 | #ifndef _ASM_INTERRUPT_H |
| 12 | #define _ASM_INTERRUPT_H | 12 | #define _ASM_INTERRUPT_H |
| 13 | 13 | ||
| 14 | #include <linux/config.h> | ||
| 14 | #include <asm/hazards.h> | 15 | #include <asm/hazards.h> |
| 15 | 16 | ||
| 16 | __asm__ ( | 17 | __asm__ ( |
| 17 | ".macro\tlocal_irq_enable\n\t" | 18 | " .macro local_irq_enable \n" |
| 18 | ".set\tpush\n\t" | 19 | " .set push \n" |
| 19 | ".set\treorder\n\t" | 20 | " .set reorder \n" |
| 20 | ".set\tnoat\n\t" | 21 | " .set noat \n" |
| 21 | "mfc0\t$1,$12\n\t" | 22 | #ifdef CONFIG_CPU_MIPSR2 |
| 22 | "ori\t$1,0x1f\n\t" | 23 | " ei \n" |
| 23 | "xori\t$1,0x1e\n\t" | 24 | #else |
| 24 | "mtc0\t$1,$12\n\t" | 25 | " mfc0 $1,$12 \n" |
| 25 | "irq_enable_hazard\n\t" | 26 | " ori $1,0x1f \n" |
| 26 | ".set\tpop\n\t" | 27 | " xori $1,0x1e \n" |
| 27 | ".endm"); | 28 | " mtc0 $1,$12 \n" |
| 29 | #endif | ||
| 30 | " irq_enable_hazard \n" | ||
| 31 | " .set pop \n" | ||
| 32 | " .endm"); | ||
| 28 | 33 | ||
| 29 | static inline void local_irq_enable(void) | 34 | static inline void local_irq_enable(void) |
| 30 | { | 35 | { |
| @@ -43,17 +48,21 @@ static inline void local_irq_enable(void) | |||
| 43 | * no nops at all. | 48 | * no nops at all. |
| 44 | */ | 49 | */ |
| 45 | __asm__ ( | 50 | __asm__ ( |
| 46 | ".macro\tlocal_irq_disable\n\t" | 51 | " .macro local_irq_disable\n" |
| 47 | ".set\tpush\n\t" | 52 | " .set push \n" |
| 48 | ".set\tnoat\n\t" | 53 | " .set noat \n" |
| 49 | "mfc0\t$1,$12\n\t" | 54 | #ifdef CONFIG_CPU_MIPSR2 |
| 50 | "ori\t$1,1\n\t" | 55 | " di \n" |
| 51 | "xori\t$1,1\n\t" | 56 | #else |
| 52 | ".set\tnoreorder\n\t" | 57 | " mfc0 $1,$12 \n" |
| 53 | "mtc0\t$1,$12\n\t" | 58 | " ori $1,1 \n" |
| 54 | "irq_disable_hazard\n\t" | 59 | " xori $1,1 \n" |
| 55 | ".set\tpop\n\t" | 60 | " .set noreorder \n" |
| 56 | ".endm"); | 61 | " mtc0 $1,$12 \n" |
| 62 | #endif | ||
| 63 | " irq_disable_hazard \n" | ||
| 64 | " .set pop \n" | ||
| 65 | " .endm \n"); | ||
| 57 | 66 | ||
| 58 | static inline void local_irq_disable(void) | 67 | static inline void local_irq_disable(void) |
| 59 | { | 68 | { |
| @@ -65,12 +74,12 @@ static inline void local_irq_disable(void) | |||
| 65 | } | 74 | } |
| 66 | 75 | ||
| 67 | __asm__ ( | 76 | __asm__ ( |
| 68 | ".macro\tlocal_save_flags flags\n\t" | 77 | " .macro local_save_flags flags \n" |
| 69 | ".set\tpush\n\t" | 78 | " .set push \n" |
| 70 | ".set\treorder\n\t" | 79 | " .set reorder \n" |
| 71 | "mfc0\t\\flags, $12\n\t" | 80 | " mfc0 \\flags, $12 \n" |
| 72 | ".set\tpop\n\t" | 81 | " .set pop \n" |
| 73 | ".endm"); | 82 | " .endm \n"); |
| 74 | 83 | ||
| 75 | #define local_save_flags(x) \ | 84 | #define local_save_flags(x) \ |
| 76 | __asm__ __volatile__( \ | 85 | __asm__ __volatile__( \ |
| @@ -78,18 +87,22 @@ __asm__ __volatile__( \ | |||
| 78 | : "=r" (x)) | 87 | : "=r" (x)) |
| 79 | 88 | ||
| 80 | __asm__ ( | 89 | __asm__ ( |
| 81 | ".macro\tlocal_irq_save result\n\t" | 90 | " .macro local_irq_save result \n" |
| 82 | ".set\tpush\n\t" | 91 | " .set push \n" |
| 83 | ".set\treorder\n\t" | 92 | " .set reorder \n" |
| 84 | ".set\tnoat\n\t" | 93 | " .set noat \n" |
| 85 | "mfc0\t\\result, $12\n\t" | 94 | #ifdef CONFIG_CPU_MIPSR2 |
| 86 | "ori\t$1, \\result, 1\n\t" | 95 | " di \\result \n" |
| 87 | "xori\t$1, 1\n\t" | 96 | #else |
| 88 | ".set\tnoreorder\n\t" | 97 | " mfc0 \\result, $12 \n" |
| 89 | "mtc0\t$1, $12\n\t" | 98 | " ori $1, \\result, 1 \n" |
| 90 | "irq_disable_hazard\n\t" | 99 | " xori $1, 1 \n" |
| 91 | ".set\tpop\n\t" | 100 | " .set noreorder \n" |
| 92 | ".endm"); | 101 | " mtc0 $1, $12 \n" |
| 102 | #endif | ||
| 103 | " irq_disable_hazard \n" | ||
| 104 | " .set pop \n" | ||
| 105 | " .endm \n"); | ||
| 93 | 106 | ||
| 94 | #define local_irq_save(x) \ | 107 | #define local_irq_save(x) \ |
| 95 | __asm__ __volatile__( \ | 108 | __asm__ __volatile__( \ |
| @@ -99,19 +112,37 @@ __asm__ __volatile__( \ | |||
| 99 | : "memory") | 112 | : "memory") |
| 100 | 113 | ||
| 101 | __asm__ ( | 114 | __asm__ ( |
| 102 | ".macro\tlocal_irq_restore flags\n\t" | 115 | " .macro local_irq_restore flags \n" |
| 103 | ".set\tnoreorder\n\t" | 116 | " .set noreorder \n" |
| 104 | ".set\tnoat\n\t" | 117 | " .set noat \n" |
| 105 | "mfc0\t$1, $12\n\t" | 118 | #if defined(CONFIG_CPU_MIPSR2) && defined(CONFIG_IRQ_CPU) |
| 106 | "andi\t\\flags, 1\n\t" | 119 | /* |
| 107 | "ori\t$1, 1\n\t" | 120 | * Slow, but doesn't suffer from a relativly unlikely race |
| 108 | "xori\t$1, 1\n\t" | 121 | * condition we're having since days 1. |
| 109 | "or\t\\flags, $1\n\t" | 122 | */ |
| 110 | "mtc0\t\\flags, $12\n\t" | 123 | " beqz \\flags, 1f \n" |
| 111 | "irq_disable_hazard\n\t" | 124 | " di \n" |
| 112 | ".set\tat\n\t" | 125 | " ei \n" |
| 113 | ".set\treorder\n\t" | 126 | "1: \n" |
| 114 | ".endm"); | 127 | #elif defined(CONFIG_CPU_MIPSR2) |
| 128 | /* | ||
| 129 | * Fast, dangerous. Life is fun, life is good. | ||
| 130 | */ | ||
| 131 | " mfc0 $1, $12 \n" | ||
| 132 | " ins $1, \\flags, 0, 1 \n" | ||
| 133 | " mtc0 $1, $12 \n" | ||
| 134 | #else | ||
| 135 | " mfc0 $1, $12 \n" | ||
| 136 | " andi \\flags, 1 \n" | ||
| 137 | " ori $1, 1 \n" | ||
| 138 | " xori $1, 1 \n" | ||
| 139 | " or \\flags, $1 \n" | ||
| 140 | " mtc0 \\flags, $12 \n" | ||
| 141 | #endif | ||
| 142 | " irq_disable_hazard \n" | ||
| 143 | " .set at \n" | ||
| 144 | " .set reorder \n" | ||
| 145 | " .endm \n"); | ||
| 115 | 146 | ||
| 116 | #define local_irq_restore(flags) \ | 147 | #define local_irq_restore(flags) \ |
| 117 | do { \ | 148 | do { \ |