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Code Issues Releases Wiki Activity

Cleanups.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-07-14 13:25:05 +00:00
parent 7e35952baa
commit 86071b637d
1 changed files with 12 additions and 10 deletions
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22
include/asm-mips/hazards.h
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@ -148,15 +148,13 @@ __asm__(
#endif #endif
/* /*
* mtc0->mfc0 hazard * Interrupt enable/disable hazards
* The 24K has a 2 cycle mtc0/mfc0 execution hazard. * Some processors have hazards when modifying
* It is a MIPS32R2 processor so ehb will clear the hazard. * the status register to change the interrupt state
*/ */
#ifdef CONFIG_CPU_MIPSR2 #ifdef CONFIG_CPU_MIPSR2
/*
* Use a macro for ehb unless explicit support for MIPSR2 is enabled
*/
__asm__( __asm__(
" .macro\tirq_enable_hazard \n\t" " .macro\tirq_enable_hazard \n\t"
" _ehb \n\t" " _ehb \n\t"
@ -164,19 +162,23 @@ __asm__(
" \n\t" " \n\t"
" .macro\tirq_disable_hazard \n\t" " .macro\tirq_disable_hazard \n\t"
" _ehb \n\t" " _ehb \n\t"
" .endm \n\t"
" \n\t"
" .macro\tback_to_back_c0_hazard \n\t"
" _ehb \n\t"
" .endm"); " .endm");
#define irq_enable_hazard() \ #define irq_enable_hazard() \
__asm__ __volatile__( \ __asm__ __volatile__( \
"_ehb\t\t\t\t# irq_enable_hazard") "irq_enable_hazard")
#define irq_disable_hazard() \ #define irq_disable_hazard() \
__asm__ __volatile__( \ __asm__ __volatile__( \
"_ehb\t\t\t\t# irq_disable_hazard") "irq_disable_hazard")
#define back_to_back_c0_hazard() \ #define back_to_back_c0_hazard() \
__asm__ __volatile__( \ __asm__ __volatile__( \
"_ehb\t\t\t\t# back_to_back_c0_hazard") "back_to_back_c0_hazard")
#elif defined(CONFIG_CPU_R10000) || defined(CONFIG_CPU_RM9000) #elif defined(CONFIG_CPU_R10000) || defined(CONFIG_CPU_RM9000)
@ -218,7 +220,7 @@ __asm__(
#define irq_enable_hazard() do { } while (0) #define irq_enable_hazard() do { } while (0)
#define irq_disable_hazard() \ #define irq_disable_hazard() \
__asm__ __volatile__( \ __asm__ __volatile__( \
"_ssnop; _ssnop; _ssnop;\t\t# irq_disable_hazard") "irq_disable_hazard")
#define back_to_back_c0_hazard() \ #define back_to_back_c0_hazard() \
__asm__ __volatile__( \ __asm__ __volatile__( \