projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | // SPDX-License-Identifier: GPL-2.0 |
| 1da177e4 LT |
2 | /* |
| 3 | * linux/arch/m32r/mm/cache.c | |
| 4 | * | |
| 9b791d47 | 5 | * Copyright (C) 2002-2005 Hirokazu Takata, Hayato Fujiwara |
| 1da177e4 LT |
6 | */ |
| 7 | ||
| 1da177e4 LT |
8 | #include <asm/pgtable.h> |
| 9 | ||
| 10 | #undef MCCR | |
| 11 | ||
| 9b791d47 HT |
12 | #if defined(CONFIG_CHIP_XNUX2) || defined(CONFIG_CHIP_M32700) \ |
| 13 | || defined(CONFIG_CHIP_VDEC2) || defined(CONFIG_CHIP_OPSP) | |
| 1da177e4 LT |
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 | |
| 9287d95e | 30 | #elif defined(CONFIG_CHIP_M32104) |
| 9b791d47 | 31 | #define MCCR ((volatile unsigned short*)0xfffffffe) |
| 9287d95e HT |
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) | |
| 9b791d47 | 40 | #endif |
| 1da177e4 LT |
41 | |
| 42 | #ifndef MCCR | |
| 43 | #error Unknown cache type. | |
| 44 | #endif | |
| 45 | ||
| 46 | ||
| 47 | /* Copy back and invalidate D-cache and invalidate I-cache all */ | |
| 48 | void _flush_cache_all(void) | |
| 49 | { | |
| 50 | #if defined(CONFIG_CHIP_M32102) | |
| 9b791d47 | 51 | unsigned char mccr; |
| 1da177e4 | 52 | *MCCR = MCCR_ICACHE_INV; |
| 9b791d47 HT |
53 | #elif defined(CONFIG_CHIP_M32104) |
| 54 | unsigned short mccr; | |
| 55 | ||
| 56 | /* Copyback and invalidate D-cache */ | |
| 57 | /* Invalidate I-cache */ | |
| 58 | *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CBINV); | |
| 1da177e4 LT |
59 | #else |
| 60 | unsigned long mccr; | |
| 61 | ||
| 62 | /* Copyback and invalidate D-cache */ | |
| 63 | /* Invalidate I-cache */ | |
| 64 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CBINV; | |
| 1da177e4 | 65 | #endif |
| 9b791d47 | 66 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ |
| 1da177e4 LT |
67 | } |
| 68 | ||
| 69 | /* Copy back D-cache and invalidate I-cache all */ | |
| 70 | void _flush_cache_copyback_all(void) | |
| 71 | { | |
| 72 | #if defined(CONFIG_CHIP_M32102) | |
| 9b791d47 | 73 | unsigned char mccr; |
| 1da177e4 | 74 | *MCCR = MCCR_ICACHE_INV; |
| 9b791d47 HT |
75 | #elif defined(CONFIG_CHIP_M32104) |
| 76 | unsigned short mccr; | |
| 77 | ||
| 78 | /* Copyback and invalidate D-cache */ | |
| 79 | /* Invalidate I-cache */ | |
| 80 | *MCCR |= (MCCR_ICACHE_INV | MCCR_DCACHE_CB); | |
| 1da177e4 LT |
81 | #else |
| 82 | unsigned long mccr; | |
| 83 | ||
| 84 | /* Copyback D-cache */ | |
| 85 | /* Invalidate I-cache */ | |
| 86 | *MCCR = MCCR_ICACHE_INV | MCCR_DCACHE_CB; | |
| 1da177e4 | 87 | #endif |
| 9b791d47 | 88 | while ((mccr = *MCCR) & MCCR_IIV); /* loop while invalidating... */ |
| 1da177e4 | 89 | } |