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Diffstat (limited to 'include/asm-mips/prefetch.h')
| -rw-r--r-- | include/asm-mips/prefetch.h | 87 |
1 files changed, 0 insertions, 87 deletions
diff --git a/include/asm-mips/prefetch.h b/include/asm-mips/prefetch.h deleted file mode 100644 index 17850834ccb0..000000000000 --- a/include/asm-mips/prefetch.h +++ /dev/null | |||
| @@ -1,87 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * This file is subject to the terms and conditions of the GNU General Public | ||
| 3 | * License. See the file "COPYING" in the main directory of this archive | ||
| 4 | * for more details. | ||
| 5 | * | ||
| 6 | * Copyright (C) 2003 by Ralf Baechle | ||
| 7 | */ | ||
| 8 | #ifndef __ASM_PREFETCH_H | ||
| 9 | #define __ASM_PREFETCH_H | ||
| 10 | |||
| 11 | |||
| 12 | /* | ||
| 13 | * R5000 and RM5200 implements pref and prefx instructions but they're nops, so | ||
| 14 | * rather than wasting time we pretend these processors don't support | ||
| 15 | * prefetching at all. | ||
| 16 | * | ||
| 17 | * R5432 implements Load, Store, LoadStreamed, StoreStreamed, LoadRetained, | ||
| 18 | * StoreRetained and WriteBackInvalidate but not Pref_PrepareForStore. | ||
| 19 | * | ||
| 20 | * Hell (and the book on my shelf I can't open ...) know what the R8000 does. | ||
| 21 | * | ||
| 22 | * RM7000 version 1.0 interprets all hints as Pref_Load; version 2.0 implements | ||
| 23 | * Pref_PrepareForStore also. | ||
| 24 | * | ||
| 25 | * RM9000 is MIPS IV but implements prefetching like MIPS32/MIPS64; it's | ||
| 26 | * Pref_WriteBackInvalidate is a nop and Pref_PrepareForStore is broken in | ||
| 27 | * current versions due to erratum G105. | ||
| 28 | * | ||
| 29 | * VR7701 only implements the Load prefetch. | ||
| 30 | * | ||
| 31 | * Finally MIPS32 and MIPS64 implement all of the following hints. | ||
| 32 | */ | ||
| 33 | |||
| 34 | #define Pref_Load 0 | ||
| 35 | #define Pref_Store 1 | ||
| 36 | /* 2 and 3 are reserved */ | ||
| 37 | #define Pref_LoadStreamed 4 | ||
| 38 | #define Pref_StoreStreamed 5 | ||
| 39 | #define Pref_LoadRetained 6 | ||
| 40 | #define Pref_StoreRetained 7 | ||
| 41 | /* 8 ... 24 are reserved */ | ||
| 42 | #define Pref_WriteBackInvalidate 25 | ||
| 43 | #define Pref_PrepareForStore 30 | ||
| 44 | |||
| 45 | #ifdef __ASSEMBLY__ | ||
| 46 | |||
| 47 | .macro __pref hint addr | ||
| 48 | #ifdef CONFIG_CPU_HAS_PREFETCH | ||
| 49 | pref \hint, \addr | ||
| 50 | #endif | ||
| 51 | .endm | ||
| 52 | |||
| 53 | .macro pref_load addr | ||
| 54 | __pref Pref_Load, \addr | ||
| 55 | .endm | ||
| 56 | |||
| 57 | .macro pref_store addr | ||
| 58 | __pref Pref_Store, \addr | ||
| 59 | .endm | ||
| 60 | |||
| 61 | .macro pref_load_streamed addr | ||
| 62 | __pref Pref_LoadStreamed, \addr | ||
| 63 | .endm | ||
| 64 | |||
| 65 | .macro pref_store_streamed addr | ||
| 66 | __pref Pref_StoreStreamed, \addr | ||
| 67 | .endm | ||
| 68 | |||
| 69 | .macro pref_load_retained addr | ||
| 70 | __pref Pref_LoadRetained, \addr | ||
| 71 | .endm | ||
| 72 | |||
| 73 | .macro pref_store_retained addr | ||
| 74 | __pref Pref_StoreRetained, \addr | ||
| 75 | .endm | ||
| 76 | |||
| 77 | .macro pref_wback_inv addr | ||
| 78 | __pref Pref_WriteBackInvalidate, \addr | ||
| 79 | .endm | ||
| 80 | |||
| 81 | .macro pref_prepare_for_store addr | ||
| 82 | __pref Pref_PrepareForStore, \addr | ||
| 83 | .endm | ||
| 84 | |||
| 85 | #endif | ||
| 86 | |||
| 87 | #endif /* __ASM_PREFETCH_H */ | ||