2 * linux/arch/m32r/mm/cache.c
4 * Copyright (C) 2002-2005 Hirokazu Takata, Hayato Fujiwara
7 #include <linux/config.h>
8 #include <asm/pgtable.h>
12 #if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) \
13 || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP)
14 /* Cache Control Register */
15 #define MCCR ((volatile unsigned long*)0xfffffffc)
16 #define MCCR_CC (1UL << 7) /* Cache mode modify bit */
17 #define MCCR_IIV (1UL << 6) /* I-cache invalidate */
18 #define MCCR_DIV (1UL << 5) /* D-cache invalidate */
19 #define MCCR_DCB (1UL << 4) /* D-cache copy back */
20 #define MCCR_ICM (1UL << 1) /* I-cache mode [0:off,1:on] */
21 #define MCCR_DCM (1UL << 0) /* D-cache mode [0:off,1:on] */
22 #define MCCR_ICACHE_INV (MCCR_CC|MCCR_IIV)
23 #define MCCR_DCACHE_CB (MCCR_CC|MCCR_DCB)
24 #define MCCR_DCACHE_CBINV (MCCR_CC|MCCR_DIV|MCCR_DCB)
25 #define CHECK_MCCR(mccr) (mccr = *MCCR)
26 #elif defined(CONFIG_CHIP_M32102)
27 #define MCCR ((volatile unsigned char*)0xfffffffe)
28 #define MCCR_IIV (1UL << 0) /* I-cache invalidate */
29 #define MCCR_ICACHE_INV MCCR_IIV
30 #elif defined(CONFIG_CHIP_M32104)
31 #define MCCR ((volatile unsigned short*)0xfffffffe)
32 #define MCCR_IIV (1UL << 8) /* I-cache invalidate */
33 #define MCCR_DIV (1UL << 9) /* D-cache invalidate */
34 #define MCCR_DCB (1UL << 10) /* D-cache copy back */
35 #define MCCR_ICM (1UL << 0) /* I-cache mode [0:off,1:on] */
36 #define MCCR_DCM (1UL << 1) /* D-cache mode [0:off,1:on] */
37 #define MCCR_ICACHE_INV MCCR_IIV
38 #define MCCR_DCACHE_CB MCCR_DCB
39 #define MCCR_DCACHE_CBINV (MCCR_DIV|MCCR_DCB)
43 #error Unknown cache type.
47 /* Copy back and invalidate D-cache and invalidate I-cache all */
48 void _flush_cache_all(void)
50 #if defined(CONFIG_CHIP_M32102)
52 *MCCR = MCCR_ICACHE_INV;
53 #elif defined(CONFIG_CHIP_M32104)
56 /* Copyback and invalidate D-cache */
57 /* Invalidate I-cache */
58 *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CBINV);
62 /* Copyback and invalidate D-cache */
63 /* Invalidate I-cache */
64 *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV;
66 while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */
69 /* Copy back D-cache and invalidate I-cache all */
70 void _flush_cache_copyback_all(void)
72 #if defined(CONFIG_CHIP_M32102)
74 *MCCR = MCCR_ICACHE_INV;
75 #elif defined(CONFIG_CHIP_M32104)
78 /* Copyback and invalidate D-cache */
79 /* Invalidate I-cache */
80 *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CB);
84 /* Copyback D-cache */
85 /* Invalidate I-cache */
86 *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB;
88 while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */