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 e8357f53..a573576 100644 --- a/include/asm-mips/interrupt.h +++ b/include/asm-mips/interrupt.h @@ -11,20 +11,25 @@ #ifndef _ASM_INTERRUPT_H #define _ASM_INTERRUPT_H +#include <linux/config.h> #include <asm/hazards.h> __asm__ ( - ".macro\tlocal_irq_enable\n\t" - ".set\tpush\n\t" - ".set\treorder\n\t" - ".set\tnoat\n\t" - "mfc0\t$1,$12\n\t" - "ori\t$1,0x1f\n\t" - "xori\t$1,0x1e\n\t" - "mtc0\t$1,$12\n\t" - "irq_enable_hazard\n\t" - ".set\tpop\n\t" - ".endm"); + " .macro local_irq_enable \n" + " .set push \n" + " .set reorder \n" + " .set noat \n" +#ifdef CONFIG_CPU_MIPSR2 + " ei \n" +#else + " mfc0 $1,$12 \n" + " ori $1,0x1f \n" + " xori $1,0x1e \n" + " mtc0 $1,$12 \n" +#endif + " irq_enable_hazard \n" + " .set pop \n" + " .endm"); static inline void local_irq_enable(void) { @@ -43,17 +48,21 @@ static inline void local_irq_enable(void) * no nops at all. */ __asm__ ( - ".macro\tlocal_irq_disable\n\t" - ".set\tpush\n\t" - ".set\tnoat\n\t" - "mfc0\t$1,$12\n\t" - "ori\t$1,1\n\t" - "xori\t$1,1\n\t" - ".set\tnoreorder\n\t" - "mtc0\t$1,$12\n\t" - "irq_disable_hazard\n\t" - ".set\tpop\n\t" - ".endm"); + " .macro local_irq_disable\n" + " .set push \n" + " .set noat \n" +#ifdef CONFIG_CPU_MIPSR2 + " di \n" +#else + " mfc0 $1,$12 \n" + " ori $1,1 \n" + " xori $1,1 \n" + " .set noreorder \n" + " mtc0 $1,$12 \n" +#endif + " irq_disable_hazard \n" + " .set pop \n" + " .endm \n"); static inline void local_irq_disable(void) { @@ -65,12 +74,12 @@ static inline void local_irq_disable(void) } __asm__ ( - ".macro\tlocal_save_flags flags\n\t" - ".set\tpush\n\t" - ".set\treorder\n\t" - "mfc0\t\\flags, $12\n\t" - ".set\tpop\n\t" - ".endm"); + " .macro local_save_flags flags \n" + " .set push \n" + " .set reorder \n" + " mfc0 \\flags, $12 \n" + " .set pop \n" + " .endm \n"); #define local_save_flags(x) \ __asm__ __volatile__( \ @@ -78,18 +87,22 @@ __asm__ __volatile__( \ : "=r" (x)) __asm__ ( - ".macro\tlocal_irq_save result\n\t" - ".set\tpush\n\t" - ".set\treorder\n\t" - ".set\tnoat\n\t" - "mfc0\t\\result, $12\n\t" - "ori\t$1, \\result, 1\n\t" - "xori\t$1, 1\n\t" - ".set\tnoreorder\n\t" - "mtc0\t$1, $12\n\t" - "irq_disable_hazard\n\t" - ".set\tpop\n\t" - ".endm"); + " .macro local_irq_save result \n" + " .set push \n" + " .set reorder \n" + " .set noat \n" +#ifdef CONFIG_CPU_MIPSR2 + " di \\result \n" +#else + " mfc0 \\result, $12 \n" + " ori $1, \\result, 1 \n" + " xori $1, 1 \n" + " .set noreorder \n" + " mtc0 $1, $12 \n" +#endif + " irq_disable_hazard \n" + " .set pop \n" + " .endm \n"); #define local_irq_save(x) \ __asm__ __volatile__( \ @@ -99,19 +112,37 @@ __asm__ __volatile__( \ : "memory") __asm__ ( - ".macro\tlocal_irq_restore flags\n\t" - ".set\tnoreorder\n\t" - ".set\tnoat\n\t" - "mfc0\t$1, $12\n\t" - "andi\t\\flags, 1\n\t" - "ori\t$1, 1\n\t" - "xori\t$1, 1\n\t" - "or\t\\flags, $1\n\t" - "mtc0\t\\flags, $12\n\t" - "irq_disable_hazard\n\t" - ".set\tat\n\t" - ".set\treorder\n\t" - ".endm"); + " .macro local_irq_restore flags \n" + " .set noreorder \n" + " .set noat \n" +#if defined(CONFIG_CPU_MIPSR2) && defined(CONFIG_IRQ_CPU) + /* + * Slow, but doesn't suffer from a relativly unlikely race + * condition we're having since days 1. + */ + " beqz \\flags, 1f \n" + " di \n" + " ei \n" + "1: \n" +#elif defined(CONFIG_CPU_MIPSR2) + /* + * Fast, dangerous. Life is fun, life is good. + */ + " mfc0 $1, $12 \n" + " ins $1, \\flags, 0, 1 \n" + " mtc0 $1, $12 \n" +#else + " mfc0 $1, $12 \n" + " andi \\flags, 1 \n" + " ori $1, 1 \n" + " xori $1, 1 \n" + " or \\flags, $1 \n" + " mtc0 \\flags, $12 \n" +#endif + " irq_disable_hazard \n" + " .set at \n" + " .set reorder \n" + " .endm \n"); #define local_irq_restore(flags) \ do { \ |
