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1da177e4 LT |
1 | /* |
2 | * linux/arch/m32r/mm/cache.c | |
3 | * | |
9b791d47 | 4 | * Copyright (C) 2002-2005 Hirokazu Takata, Hayato Fujiwara |
1da177e4 LT |
5 | */ |
6 | ||
1da177e4 LT |
7 | #include <asm/pgtable.h> |
8 | ||
9 | #undef MCCR | |
10 | ||
9b791d47 HT |
11 | #if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) \ |
12 | || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP) | |
1da177e4 LT |
13 | /* Cache Control Register */ |
14 | #define MCCR ((volatile unsigned long*)0xfffffffc) | |
15 | #define MCCR_CC (1UL << 7) /* Cache mode modify bit */ | |
16 | #define MCCR_IIV (1UL << 6) /* I-cache invalidate */ | |
17 | #define MCCR_DIV (1UL << 5) /* D-cache invalidate */ | |
18 | #define MCCR_DCB (1UL << 4) /* D-cache copy back */ | |
19 | #define MCCR_ICM (1UL << 1) /* I-cache mode [0:off,1:on] */ | |
20 | #define MCCR_DCM (1UL << 0) /* D-cache mode [0:off,1:on] */ | |
21 | #define MCCR_ICACHE_INV (MCCR_CC|MCCR_IIV) | |
22 | #define MCCR_DCACHE_CB (MCCR_CC|MCCR_DCB) | |
23 | #define MCCR_DCACHE_CBINV (MCCR_CC|MCCR_DIV|MCCR_DCB) | |
24 | #define CHECK_MCCR(mccr) (mccr = *MCCR) | |
25 | #elif defined(CONFIG_CHIP_M32102) | |
26 | #define MCCR ((volatile unsigned char*)0xfffffffe) | |
27 | #define MCCR_IIV (1UL << 0) /* I-cache invalidate */ | |
28 | #define MCCR_ICACHE_INV MCCR_IIV | |
9287d95e | 29 | #elif defined(CONFIG_CHIP_M32104) |
9b791d47 | 30 | #define MCCR ((volatile unsigned short*)0xfffffffe) |
9287d95e HT |
31 | #define MCCR_IIV (1UL << 8) /* I-cache invalidate */ |
32 | #define MCCR_DIV (1UL << 9) /* D-cache invalidate */ | |
33 | #define MCCR_DCB (1UL << 10) /* D-cache copy back */ | |
34 | #define MCCR_ICM (1UL << 0) /* I-cache mode [0:off,1:on] */ | |
35 | #define MCCR_DCM (1UL << 1) /* D-cache mode [0:off,1:on] */ | |
36 | #define MCCR_ICACHE_INV MCCR_IIV | |
37 | #define MCCR_DCACHE_CB MCCR_DCB | |
38 | #define MCCR_DCACHE_CBINV (MCCR_DIV|MCCR_DCB) | |
9b791d47 | 39 | #endif |
1da177e4 LT |
40 | |
41 | #ifndef MCCR | |
42 | #error Unknown cache type. | |
43 | #endif | |
44 | ||
45 | ||
46 | /* Copy back and invalidate D-cache and invalidate I-cache all */ | |
47 | void _flush_cache_all(void) | |
48 | { | |
49 | #if defined(CONFIG_CHIP_M32102) | |
9b791d47 | 50 | unsigned char mccr; |
1da177e4 | 51 | *MCCR = MCCR_ICACHE_INV; |
9b791d47 HT |
52 | #elif defined(CONFIG_CHIP_M32104) |
53 | unsigned short mccr; | |
54 | ||
55 | /* Copyback and invalidate D-cache */ | |
56 | /* Invalidate I-cache */ | |
57 | *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CBINV); | |
1da177e4 LT |
58 | #else |
59 | unsigned long mccr; | |
60 | ||
61 | /* Copyback and invalidate D-cache */ | |
62 | /* Invalidate I-cache */ | |
63 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV; | |
1da177e4 | 64 | #endif |
9b791d47 | 65 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ |
1da177e4 LT |
66 | } |
67 | ||
68 | /* Copy back D-cache and invalidate I-cache all */ | |
69 | void _flush_cache_copyback_all(void) | |
70 | { | |
71 | #if defined(CONFIG_CHIP_M32102) | |
9b791d47 | 72 | unsigned char mccr; |
1da177e4 | 73 | *MCCR = MCCR_ICACHE_INV; |
9b791d47 HT |
74 | #elif defined(CONFIG_CHIP_M32104) |
75 | unsigned short mccr; | |
76 | ||
77 | /* Copyback and invalidate D-cache */ | |
78 | /* Invalidate I-cache */ | |
79 | *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CB); | |
1da177e4 LT |
80 | #else |
81 | unsigned long mccr; | |
82 | ||
83 | /* Copyback D-cache */ | |
84 | /* Invalidate I-cache */ | |
85 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB; | |
1da177e4 | 86 | #endif |
9b791d47 | 87 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ |
1da177e4 | 88 | } |