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1da177e4 LT |
1 | /* |
2 | * linux/arch/m32r/mm/cache.c | |
3 | * | |
4 | * Copyright (C) 2002 Hirokazu Takata | |
5 | */ | |
6 | ||
7 | #include <linux/config.h> | |
8 | #include <asm/pgtable.h> | |
9 | ||
10 | #undef MCCR | |
11 | ||
12 | #if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP) | |
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 HT |
29 | #elif defined(CONFIG_CHIP_M32104) |
30 | #define MCCR ((volatile unsigned long*)0xfffffffc) | |
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) | |
1da177e4 LT |
39 | #endif /* CONFIG_CHIP_XNUX2 || CONFIG_CHIP_M32700 */ |
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) | |
50 | *MCCR = MCCR_ICACHE_INV; | |
51 | #else | |
52 | unsigned long mccr; | |
53 | ||
54 | /* Copyback and invalidate D-cache */ | |
55 | /* Invalidate I-cache */ | |
56 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV; | |
57 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ | |
58 | #endif | |
59 | } | |
60 | ||
61 | /* Copy back D-cache and invalidate I-cache all */ | |
62 | void _flush_cache_copyback_all(void) | |
63 | { | |
64 | #if defined(CONFIG_CHIP_M32102) | |
65 | *MCCR = MCCR_ICACHE_INV; | |
66 | #else | |
67 | unsigned long mccr; | |
68 | ||
69 | /* Copyback D-cache */ | |
70 | /* Invalidate I-cache */ | |
71 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB; | |
72 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ | |
73 | ||
74 | #endif | |
75 | } |