diff options
Diffstat (limited to 'arch/m32r/mm/cache.c')
| -rw-r--r-- | arch/m32r/mm/cache.c | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/arch/m32r/mm/cache.c b/arch/m32r/mm/cache.c index 31b0789c1992..9f54dd937013 100644 --- a/arch/m32r/mm/cache.c +++ b/arch/m32r/mm/cache.c @@ -1,7 +1,7 @@ /* * linux/arch/m32r/mm/cache.c * - * Copyright (C) 2002 Hirokazu Takata + * Copyright (C) 2002-2005 Hirokazu Takata, Hayato Fujiwara */ #include <linux/config.h> @@ -9,7 +9,8 @@ #undef MCCR -#if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP) +#if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) \ + || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP) /* Cache Control Register */ #define MCCR ((volatile unsigned long*)0xfffffffc) #define MCCR_CC (1UL << 7) /* Cache mode modify bit */ @@ -26,7 +27,17 @@ #define MCCR ((volatile unsigned char*)0xfffffffe) #define MCCR_IIV (1UL << 0) /* I-cache invalidate */ #define MCCR_ICACHE_INV MCCR_IIV -#endif /* CONFIG_CHIP_XNUX2 || CONFIG_CHIP_M32700 */ +#elif defined(CONFIG_CHIP_M32104) +#define MCCR ((volatile unsigned short*)0xfffffffe) +#define MCCR_IIV (1UL << 8) /* I-cache invalidate */ +#define MCCR_DIV (1UL << 9) /* D-cache invalidate */ +#define MCCR_DCB (1UL << 10) /* D-cache copy back */ +#define MCCR_ICM (1UL << 0) /* I-cache mode [0:off,1:on] */ +#define MCCR_DCM (1UL << 1) /* D-cache mode [0:off,1:on] */ +#define MCCR_ICACHE_INV MCCR_IIV +#define MCCR_DCACHE_CB MCCR_DCB +#define MCCR_DCACHE_CBINV (MCCR_DIV|MCCR_DCB) +#endif #ifndef MCCR #error Unknown cache type. @@ -37,29 +48,42 @@ void _flush_cache_all(void) { #if defined(CONFIG_CHIP_M32102) + unsigned char mccr; *MCCR = MCCR_ICACHE_INV; +#elif defined(CONFIG_CHIP_M32104) + unsigned short mccr; + + /* Copyback and invalidate D-cache */ + /* Invalidate I-cache */ + *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CBINV); #else unsigned long mccr; /* Copyback and invalidate D-cache */ /* Invalidate I-cache */ *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV; - while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ #endif + while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ } /* Copy back D-cache and invalidate I-cache all */ void _flush_cache_copyback_all(void) { #if defined(CONFIG_CHIP_M32102) + unsigned char mccr; *MCCR = MCCR_ICACHE_INV; +#elif defined(CONFIG_CHIP_M32104) + unsigned short mccr; + + /* Copyback and invalidate D-cache */ + /* Invalidate I-cache */ + *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CB); #else unsigned long mccr; /* Copyback D-cache */ /* Invalidate I-cache */ *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB; - while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ - #endif + while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ } |