From ff88f8a3d290c213f90d40aa81bdea5c054f58b5 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 12 Jul 2005 14:54:31 +0000 Subject: Use ei / di MIPS32 R2 instructions if available. Signed-off-by: Ralf Baechle --- include/asm-mips/interrupt.h | 138 ++++++++++++++++++++++++++----------------- 1 file changed, 85 insertions(+), 53 deletions(-) (limited to 'include/asm-mips/interrupt.h') diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h index e8357f5379fa..0ba99f019be9 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 #include __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" +#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) + " 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" +#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) + " 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" +#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) + " 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 +112,38 @@ __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_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2)) && \ + 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_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) + /* + * 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 { \ -- cgit v1.2.2 From ec917c2c1ab4359a1d438e62daeb50cc42e632e1 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Fri, 7 Oct 2005 16:58:15 +0100 Subject: Fixup a few lose ends in explicit support for MIPS R1/R2. Signed-off-by: Ralf Baechle --- include/asm-mips/interrupt.h | 11 +++++------ 1 file changed, 5 insertions(+), 6 deletions(-) (limited to 'include/asm-mips/interrupt.h') diff --git a/include/asm-mips/interrupt.h b/include/asm-mips/interrupt.h index 0ba99f019be9..a5735761f5e5 100644 --- a/include/asm-mips/interrupt.h +++ b/include/asm-mips/interrupt.h @@ -19,7 +19,7 @@ __asm__ ( " .set push \n" " .set reorder \n" " .set noat \n" -#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) +#ifdef CONFIG_CPU_MIPSR2 " ei \n" #else " mfc0 $1,$12 \n" @@ -51,7 +51,7 @@ __asm__ ( " .macro local_irq_disable\n" " .set push \n" " .set noat \n" -#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) +#ifdef CONFIG_CPU_MIPSR2 " di \n" #else " mfc0 $1,$12 \n" @@ -91,7 +91,7 @@ __asm__ ( " .set push \n" " .set reorder \n" " .set noat \n" -#if defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) +#ifdef CONFIG_CPU_MIPSR2 " di \\result \n" #else " mfc0 \\result, $12 \n" @@ -115,8 +115,7 @@ __asm__ ( " .macro local_irq_restore flags \n" " .set noreorder \n" " .set noat \n" -#if (defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2)) && \ - defined(CONFIG_IRQ_CPU) +#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. @@ -125,7 +124,7 @@ __asm__ ( " di \n" " ei \n" "1: \n" -#elif defined(CONFIG_CPU_MIPS32_R2) || defined(CONFIG_CPU_MIPS64_R2) +#elif defined(CONFIG_CPU_MIPSR2) /* * Fast, dangerous. Life is fun, life is good. */ -- cgit v1.2.2