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linux/arch/arm/include/asm/glue-cache.h

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ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
/*
* arch/arm/include/asm/glue-cache.h
*
* Copyright (C) 1999-2002 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef ASM_GLUE_CACHE_H
#define ASM_GLUE_CACHE_H
#include <asm/glue.h>
/*
* Cache Model
* ===========
*/
#undef _CACHE
#undef MULTI_CACHE
#if defined(CONFIG_CPU_CACHE_V3)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE v3
# endif
#endif
#if defined(CONFIG_CPU_CACHE_V4)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE v4
# endif
#endif
#if defined(CONFIG_CPU_ARM920T) || defined(CONFIG_CPU_ARM922T) || \
defined(CONFIG_CPU_ARM925T) || defined(CONFIG_CPU_ARM1020) || \
defined(CONFIG_CPU_ARM1026)
# define MULTI_CACHE 1
#endif
#if defined(CONFIG_CPU_FA526)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE fa
# endif
#endif
#if defined(CONFIG_CPU_ARM926T)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE arm926
# endif
#endif
#if defined(CONFIG_CPU_ARM940T)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE arm940
# endif
#endif
#if defined(CONFIG_CPU_ARM946E)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE arm946
# endif
#endif
#if defined(CONFIG_CPU_CACHE_V4WB)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE v4wb
# endif
#endif
#if defined(CONFIG_CPU_XSCALE)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE xscale
# endif
#endif
#if defined(CONFIG_CPU_XSC3)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE xsc3
# endif
#endif
#if defined(CONFIG_CPU_MOHAWK)
# ifdef _CACHE
# define MULTI_CACHE 1
# else
# define _CACHE mohawk
# endif
#endif
#if defined(CONFIG_CPU_FEROCEON)
# define MULTI_CACHE 1
#endif
Merge branch 'v6v7' into devel Conflicts: arch/arm/include/asm/cacheflush.h arch/arm/include/asm/proc-fns.h arch/arm/mm/Kconfig
2011-03-17 07:35:26 +08:00
#if defined(CONFIG_CPU_V6) || defined(CONFIG_CPU_V6K)
ARM: Fix bad merge bd1274dc005 (Merge branch 'v6v7' into devel) Commit 774c096bf9e49 (ARM: v6/v7 cache: allow cache calls to be optimized) got dropped when the merge conflicts for moving the contents of the files in commit 753790e713d (ARM: move cache/processor/fault glue to separate include files) was fixed up in merge bd1274dc005 (Merge branch 'v6v7' into devel). This puts the change back. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-02 16:17:09 +08:00
# ifdef _CACHE
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
# define MULTI_CACHE 1
ARM: Fix bad merge bd1274dc005 (Merge branch 'v6v7' into devel) Commit 774c096bf9e49 (ARM: v6/v7 cache: allow cache calls to be optimized) got dropped when the merge conflicts for moving the contents of the files in commit 753790e713d (ARM: move cache/processor/fault glue to separate include files) was fixed up in merge bd1274dc005 (Merge branch 'v6v7' into devel). This puts the change back. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-02 16:17:09 +08:00
# else
# define _CACHE v6
# endif
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
#endif
#if defined(CONFIG_CPU_V7)
ARM: Fix bad merge bd1274dc005 (Merge branch 'v6v7' into devel) Commit 774c096bf9e49 (ARM: v6/v7 cache: allow cache calls to be optimized) got dropped when the merge conflicts for moving the contents of the files in commit 753790e713d (ARM: move cache/processor/fault glue to separate include files) was fixed up in merge bd1274dc005 (Merge branch 'v6v7' into devel). This puts the change back. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-02 16:17:09 +08:00
# ifdef _CACHE
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
# define MULTI_CACHE 1
ARM: Fix bad merge bd1274dc005 (Merge branch 'v6v7' into devel) Commit 774c096bf9e49 (ARM: v6/v7 cache: allow cache calls to be optimized) got dropped when the merge conflicts for moving the contents of the files in commit 753790e713d (ARM: move cache/processor/fault glue to separate include files) was fixed up in merge bd1274dc005 (Merge branch 'v6v7' into devel). This puts the change back. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-09-02 16:17:09 +08:00
# else
# define _CACHE v7
# endif
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
#endif
#if !defined(_CACHE) && !defined(MULTI_CACHE)
Fix common misspellings Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2011-03-31 09:57:33 +08:00
#error Unknown cache maintenance model
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
#endif
#ifndef MULTI_CACHE
#define __cpuc_flush_icache_all __glue(_CACHE,_flush_icache_all)
#define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all)
ARM: mm: implement LoUIS API for cache maintenance ops ARM v7 architecture introduced the concept of cache levels and related control registers. New processors like A7 and A15 embed an L2 unified cache controller that becomes part of the cache level hierarchy. Some operations in the kernel like cpu_suspend and __cpu_disable do not require a flush of the entire cache hierarchy to DRAM but just the cache levels belonging to the Level of Unification Inner Shareable (LoUIS), which in most of ARM v7 systems correspond to L1. The current cache flushing API used in cpu_suspend and __cpu_disable, flush_cache_all(), ends up flushing the whole cache hierarchy since for v7 it cleans and invalidates all cache levels up to Level of Coherency (LoC) which cripples system performance when used in hot paths like hotplug and cpuidle. Therefore a new kernel cache maintenance API must be added to cope with latest ARM system requirements. This patch adds flush_cache_louis() to the ARM kernel cache maintenance API. This function cleans and invalidates all data cache levels up to the Level of Unification Inner Shareable (LoUIS) and invalidates the instruction cache for processors that support it (> v7). This patch also creates an alias of the cache LoUIS function to flush_kern_all for all processor versions prior to v7, so that the current cache flushing behaviour is unchanged for those processors. v7 cache maintenance code implements a cache LoUIS function that cleans and invalidates the D-cache up to LoUIS and invalidates the I-cache, according to the new API. Reviewed-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Tested-by: Shawn Guo <shawn.guo@linaro.org>
2012-09-06 21:05:13 +08:00
#define __cpuc_flush_kern_louis __glue(_CACHE,_flush_kern_cache_louis)
ARM: move cache/processor/fault glue to separate include files This allows the cache/processor/fault glue to be more easily used from assembler code. Tested on Assabet and Tegra 2. Tested-by: Colin Cross <ccross@android.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2011-02-06 23:32:24 +08:00
#define __cpuc_flush_user_all __glue(_CACHE,_flush_user_cache_all)
#define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range)
#define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range)
#define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range)
#define __cpuc_flush_dcache_area __glue(_CACHE,_flush_kern_dcache_area)
#define dmac_map_area __glue(_CACHE,_dma_map_area)
#define dmac_unmap_area __glue(_CACHE,_dma_unmap_area)
#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
#endif
#endif