diff options
Diffstat (limited to 'include/asm-mips/mipsregs.h')
| -rw-r--r-- | include/asm-mips/mipsregs.h | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/include/asm-mips/mipsregs.h b/include/asm-mips/mipsregs.h index 668db02c280..706b3691f57 100644 --- a/include/asm-mips/mipsregs.h +++ b/include/asm-mips/mipsregs.h @@ -15,6 +15,7 @@ #include <linux/linkage.h> #include <asm/hazards.h> +#include <asm/war.h> /* * The following macros are especially useful for __asm__ @@ -537,6 +538,9 @@ #define MIPS_CONF7_WII (_ULCAST_(1) << 31) +#define MIPS_CONF7_RPS (_ULCAST_(1) << 2) + + /* * Bits in the MIPS32/64 coprocessor 1 (FPU) revision register. */ @@ -1298,10 +1302,39 @@ static inline void tlb_probe(void) static inline void tlb_read(void) { +#if MIPS34K_MISSED_ITLB_WAR + int res = 0; + + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " .word 0x41610001 # dvpe $1 \n" + " move %0, $1 \n" + " ehb \n" + " .set pop \n" + : "=r" (res)); + + instruction_hazard(); +#endif + __asm__ __volatile__( ".set noreorder\n\t" "tlbr\n\t" ".set reorder"); + +#if MIPS34K_MISSED_ITLB_WAR + if ((res & _ULCAST_(1))) + __asm__ __volatile__( + " .set push \n" + " .set noreorder \n" + " .set noat \n" + " .set mips32r2 \n" + " .word 0x41600021 # evpe \n" + " ehb \n" + " .set pop \n"); +#endif } static inline void tlb_write_indexed(void) |