projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3be80aae VG |
1 | /* |
| 2 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | */ | |
| 8 | ||
| 9 | #ifndef __ARC_ASM_CACHE_H | |
| 10 | #define __ARC_ASM_CACHE_H | |
| 11 | ||
| 12 | /* In case $$ not config, setup a dummy number for rest of kernel */ | |
| 13 | #ifndef CONFIG_ARC_CACHE_LINE_SHIFT | |
| 14 | #define L1_CACHE_SHIFT 6 | |
| 15 | #else | |
| 16 | #define L1_CACHE_SHIFT CONFIG_ARC_CACHE_LINE_SHIFT | |
| 17 | #endif | |
| 18 | ||
| 19 | #define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT) | |
| 63d2dfdb | 20 | #define CACHE_LINE_MASK (~(L1_CACHE_BYTES - 1)) |
| 95d6976d | 21 | |
| da1677b0 VG |
22 | /* |
| 23 | * ARC700 doesn't cache any access in top 256M. | |
| 24 | * Ideal for wiring memory mapped peripherals as we don't need to do | |
| 25 | * explicit uncached accesses (LD.di/ST.di) hence more portable drivers | |
| 26 | */ | |
| 27 | #define ARC_UNCACHED_ADDR_SPACE 0xc0000000 | |
| 28 | ||
| 95d6976d VG |
29 | #ifndef __ASSEMBLY__ |
| 30 | ||
| 31 | /* Uncached access macros */ | |
| 32 | #define arc_read_uncached_32(ptr) \ | |
| 33 | ({ \ | |
| 34 | unsigned int __ret; \ | |
| 35 | __asm__ __volatile__( \ | |
| 36 | " ld.di %0, [%1] \n" \ | |
| 37 | : "=r"(__ret) \ | |
| 38 | : "r"(ptr)); \ | |
| 39 | __ret; \ | |
| 40 | }) | |
| 41 | ||
| 42 | #define arc_write_uncached_32(ptr, data)\ | |
| 43 | ({ \ | |
| 44 | __asm__ __volatile__( \ | |
| 45 | " st.di %0, [%1] \n" \ | |
| 46 | : \ | |
| 47 | : "r"(data), "r"(ptr)); \ | |
| 48 | }) | |
| 49 | ||
| 95d6976d VG |
50 | #define ARCH_DMA_MINALIGN L1_CACHE_BYTES |
| 51 | ||
| 95d6976d VG |
52 | extern void arc_cache_init(void); |
| 53 | extern char *arc_cache_mumbojumbo(int cpu_id, char *buf, int len); | |
| 07b9b651 | 54 | extern void read_decode_cache_bcr(void); |
| da1677b0 VG |
55 | |
| 56 | #endif /* !__ASSEMBLY__ */ | |
| 95d6976d | 57 | |
| ef680cdc VG |
58 | /* Instruction cache related Auxiliary registers */ |
| 59 | #define ARC_REG_IC_BCR 0x77 /* Build Config reg */ | |
| 60 | #define ARC_REG_IC_IVIC 0x10 | |
| 61 | #define ARC_REG_IC_CTRL 0x11 | |
| 62 | #define ARC_REG_IC_IVIL 0x19 | |
| 230a15f1 | 63 | #if defined(CONFIG_ARC_MMU_V3) |
| ef680cdc VG |
64 | #define ARC_REG_IC_PTAG 0x1E |
| 65 | #endif | |
| 66 | ||
| 67 | /* Bit val in IC_CTRL */ | |
| 68 | #define IC_CTRL_CACHE_DISABLE 0x1 | |
| 69 | ||
| 70 | /* Data cache related Auxiliary registers */ | |
| 71 | #define ARC_REG_DC_BCR 0x72 /* Build Config reg */ | |
| 72 | #define ARC_REG_DC_IVDC 0x47 | |
| 73 | #define ARC_REG_DC_CTRL 0x48 | |
| 74 | #define ARC_REG_DC_IVDL 0x4A | |
| 75 | #define ARC_REG_DC_FLSH 0x4B | |
| 76 | #define ARC_REG_DC_FLDL 0x4C | |
| 230a15f1 | 77 | #if defined(CONFIG_ARC_MMU_V3) |
| ef680cdc VG |
78 | #define ARC_REG_DC_PTAG 0x5C |
| 79 | #endif | |
| 80 | ||
| 81 | /* Bit val in DC_CTRL */ | |
| 82 | #define DC_CTRL_INV_MODE_FLUSH 0x40 | |
| 83 | #define DC_CTRL_FLUSH_STATUS 0x100 | |
| 84 | ||
| 3be80aae | 85 | #endif /* _ASM_CACHE_H */ |