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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 17850834ccb..00000000000 --- a/include/asm-mips/prefetch.h +++ /dev/null @@ -1,87 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * Copyright (C) 2003 by Ralf Baechle - */ -#ifndef __ASM_PREFETCH_H -#define __ASM_PREFETCH_H - - -/* - * R5000 and RM5200 implements pref and prefx instructions but they're nops, so - * rather than wasting time we pretend these processors don't support - * prefetching at all. - * - * R5432 implements Load, Store, LoadStreamed, StoreStreamed, LoadRetained, - * StoreRetained and WriteBackInvalidate but not Pref_PrepareForStore. - * - * Hell (and the book on my shelf I can't open ...) know what the R8000 does. - * - * RM7000 version 1.0 interprets all hints as Pref_Load; version 2.0 implements - * Pref_PrepareForStore also. - * - * RM9000 is MIPS IV but implements prefetching like MIPS32/MIPS64; it's - * Pref_WriteBackInvalidate is a nop and Pref_PrepareForStore is broken in - * current versions due to erratum G105. - * - * VR7701 only implements the Load prefetch. - * - * Finally MIPS32 and MIPS64 implement all of the following hints. - */ - -#define Pref_Load 0 -#define Pref_Store 1 - /* 2 and 3 are reserved */ -#define Pref_LoadStreamed 4 -#define Pref_StoreStreamed 5 -#define Pref_LoadRetained 6 -#define Pref_StoreRetained 7 - /* 8 ... 24 are reserved */ -#define Pref_WriteBackInvalidate 25 -#define Pref_PrepareForStore 30 - -#ifdef __ASSEMBLY__ - - .macro __pref hint addr -#ifdef CONFIG_CPU_HAS_PREFETCH - pref \hint, \addr -#endif - .endm - - .macro pref_load addr - __pref Pref_Load, \addr - .endm - - .macro pref_store addr - __pref Pref_Store, \addr - .endm - - .macro pref_load_streamed addr - __pref Pref_LoadStreamed, \addr - .endm - - .macro pref_store_streamed addr - __pref Pref_StoreStreamed, \addr - .endm - - .macro pref_load_retained addr - __pref Pref_LoadRetained, \addr - .endm - - .macro pref_store_retained addr - __pref Pref_StoreRetained, \addr - .endm - - .macro pref_wback_inv addr - __pref Pref_WriteBackInvalidate, \addr - .endm - - .macro pref_prepare_for_store addr - __pref Pref_PrepareForStore, \addr - .endm - -#endif - -#endif /* __ASM_PREFETCH_H */ |