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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-02 10:55:55 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-02 21:32:35 +0100
commit4baa9922430662431231ac637adedddbb0cfb2d7 (patch)
treee8fb765ce3e41c01f33de34a0bc9494f0ae19818 /include/asm-arm/cacheflush.h
parentff4db0a043a5dee7180bdffd178e61cd02812c68 (diff)
downloadop-kernel-dev-4baa9922430662431231ac637adedddbb0cfb2d7.zip
op-kernel-dev-4baa9922430662431231ac637adedddbb0cfb2d7.tar.gz
[ARM] move include/asm-arm to arch/arm/include/asm
Move platform independent header files to arch/arm/include/asm, leaving those in asm/arch* and asm/plat* alone. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'include/asm-arm/cacheflush.h')
-rw-r--r--include/asm-arm/cacheflush.h537
1 files changed, 0 insertions, 537 deletions
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
deleted file mode 100644
index e68a1cb..0000000
--- a/include/asm-arm/cacheflush.h
+++ /dev/null
@@ -1,537 +0,0 @@
-/*
- * linux/include/asm-arm/cacheflush.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 _ASMARM_CACHEFLUSH_H
-#define _ASMARM_CACHEFLUSH_H
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-
-#include <asm/glue.h>
-#include <asm/shmparam.h>
-
-#define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
-
-/*
- * 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)
-# define MULTI_CACHE 1
-#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_FEROCEON)
-# define MULTI_CACHE 1
-#endif
-
-#if defined(CONFIG_CPU_V6)
-//# ifdef _CACHE
-# define MULTI_CACHE 1
-//# else
-//# define _CACHE v6
-//# endif
-#endif
-
-#if defined(CONFIG_CPU_V7)
-//# ifdef _CACHE
-# define MULTI_CACHE 1
-//# else
-//# define _CACHE v7
-//# endif
-#endif
-
-#if !defined(_CACHE) && !defined(MULTI_CACHE)
-#error Unknown cache maintainence model
-#endif
-
-/*
- * This flag is used to indicate that the page pointed to by a pte
- * is dirty and requires cleaning before returning it to the user.
- */
-#define PG_dcache_dirty PG_arch_1
-
-/*
- * MM Cache Management
- * ===================
- *
- * The arch/arm/mm/cache-*.S and arch/arm/mm/proc-*.S files
- * implement these methods.
- *
- * Start addresses are inclusive and end addresses are exclusive;
- * start addresses should be rounded down, end addresses up.
- *
- * See Documentation/cachetlb.txt for more information.
- * Please note that the implementation of these, and the required
- * effects are cache-type (VIVT/VIPT/PIPT) specific.
- *
- * flush_cache_kern_all()
- *
- * Unconditionally clean and invalidate the entire cache.
- *
- * flush_cache_user_mm(mm)
- *
- * Clean and invalidate all user space cache entries
- * before a change of page tables.
- *
- * flush_cache_user_range(start, end, flags)
- *
- * Clean and invalidate a range of cache entries in the
- * specified address space before a change of page tables.
- * - start - user start address (inclusive, page aligned)
- * - end - user end address (exclusive, page aligned)
- * - flags - vma->vm_flags field
- *
- * coherent_kern_range(start, end)
- *
- * Ensure coherency between the Icache and the Dcache in the
- * region described by start, end. If you have non-snooping
- * Harvard caches, you need to implement this function.
- * - start - virtual start address
- * - end - virtual end address
- *
- * DMA Cache Coherency
- * ===================
- *
- * dma_inv_range(start, end)
- *
- * Invalidate (discard) the specified virtual address range.
- * May not write back any entries. If 'start' or 'end'
- * are not cache line aligned, those lines must be written
- * back.
- * - start - virtual start address
- * - end - virtual end address
- *
- * dma_clean_range(start, end)
- *
- * Clean (write back) the specified virtual address range.
- * - start - virtual start address
- * - end - virtual end address
- *
- * dma_flush_range(start, end)
- *
- * Clean and invalidate the specified virtual address range.
- * - start - virtual start address
- * - end - virtual end address
- */
-
-struct cpu_cache_fns {
- void (*flush_kern_all)(void);
- void (*flush_user_all)(void);
- void (*flush_user_range)(unsigned long, unsigned long, unsigned int);
-
- void (*coherent_kern_range)(unsigned long, unsigned long);
- void (*coherent_user_range)(unsigned long, unsigned long);
- void (*flush_kern_dcache_page)(void *);
-
- void (*dma_inv_range)(const void *, const void *);
- void (*dma_clean_range)(const void *, const void *);
- void (*dma_flush_range)(const void *, const void *);
-};
-
-struct outer_cache_fns {
- void (*inv_range)(unsigned long, unsigned long);
- void (*clean_range)(unsigned long, unsigned long);
- void (*flush_range)(unsigned long, unsigned long);
-};
-
-/*
- * Select the calling method
- */
-#ifdef MULTI_CACHE
-
-extern struct cpu_cache_fns cpu_cache;
-
-#define __cpuc_flush_kern_all cpu_cache.flush_kern_all
-#define __cpuc_flush_user_all cpu_cache.flush_user_all
-#define __cpuc_flush_user_range cpu_cache.flush_user_range
-#define __cpuc_coherent_kern_range cpu_cache.coherent_kern_range
-#define __cpuc_coherent_user_range cpu_cache.coherent_user_range
-#define __cpuc_flush_dcache_page cpu_cache.flush_kern_dcache_page
-
-/*
- * These are private to the dma-mapping API. Do not use directly.
- * Their sole purpose is to ensure that data held in the cache
- * is visible to DMA, or data written by DMA to system memory is
- * visible to the CPU.
- */
-#define dmac_inv_range cpu_cache.dma_inv_range
-#define dmac_clean_range cpu_cache.dma_clean_range
-#define dmac_flush_range cpu_cache.dma_flush_range
-
-#else
-
-#define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all)
-#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_page __glue(_CACHE,_flush_kern_dcache_page)
-
-extern void __cpuc_flush_kern_all(void);
-extern void __cpuc_flush_user_all(void);
-extern void __cpuc_flush_user_range(unsigned long, unsigned long, unsigned int);
-extern void __cpuc_coherent_kern_range(unsigned long, unsigned long);
-extern void __cpuc_coherent_user_range(unsigned long, unsigned long);
-extern void __cpuc_flush_dcache_page(void *);
-
-/*
- * These are private to the dma-mapping API. Do not use directly.
- * Their sole purpose is to ensure that data held in the cache
- * is visible to DMA, or data written by DMA to system memory is
- * visible to the CPU.
- */
-#define dmac_inv_range __glue(_CACHE,_dma_inv_range)
-#define dmac_clean_range __glue(_CACHE,_dma_clean_range)
-#define dmac_flush_range __glue(_CACHE,_dma_flush_range)
-
-extern void dmac_inv_range(const void *, const void *);
-extern void dmac_clean_range(const void *, const void *);
-extern void dmac_flush_range(const void *, const void *);
-
-#endif
-
-#ifdef CONFIG_OUTER_CACHE
-
-extern struct outer_cache_fns outer_cache;
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.inv_range)
- outer_cache.inv_range(start, end);
-}
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.clean_range)
- outer_cache.clean_range(start, end);
-}
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{
- if (outer_cache.flush_range)
- outer_cache.flush_range(start, end);
-}
-
-#else
-
-static inline void outer_inv_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_clean_range(unsigned long start, unsigned long end)
-{ }
-static inline void outer_flush_range(unsigned long start, unsigned long end)
-{ }
-
-#endif
-
-/*
- * flush_cache_vmap() is used when creating mappings (eg, via vmap,
- * vmalloc, ioremap etc) in kernel space for pages. Since the
- * direct-mappings of these pages may contain cached data, we need
- * to do a full cache flush to ensure that writebacks don't corrupt
- * data placed into these pages via the new mappings.
- */
-#define flush_cache_vmap(start, end) flush_cache_all()
-#define flush_cache_vunmap(start, end) flush_cache_all()
-
-/*
- * Copy user data from/to a page which is mapped into a different
- * processes address space. Really, we want to allow our "user
- * space" model to handle this.
- */
-#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
- do { \
- memcpy(dst, src, len); \
- flush_ptrace_access(vma, page, vaddr, dst, len, 1);\
- } while (0)
-
-#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
- do { \
- memcpy(dst, src, len); \
- } while (0)
-
-/*
- * Convert calls to our calling convention.
- */
-#define flush_cache_all() __cpuc_flush_kern_all()
-#ifndef CONFIG_CPU_CACHE_VIPT
-static inline void flush_cache_mm(struct mm_struct *mm)
-{
- if (cpu_isset(smp_processor_id(), mm->cpu_vm_mask))
- __cpuc_flush_user_all();
-}
-
-static inline void
-flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end)
-{
- if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask))
- __cpuc_flush_user_range(start & PAGE_MASK, PAGE_ALIGN(end),
- vma->vm_flags);
-}
-
-static inline void
-flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn)
-{
- if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
- unsigned long addr = user_addr & PAGE_MASK;
- __cpuc_flush_user_range(addr, addr + PAGE_SIZE, vma->vm_flags);
- }
-}
-
-static inline void
-flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
- unsigned long uaddr, void *kaddr,
- unsigned long len, int write)
-{
- if (cpu_isset(smp_processor_id(), vma->vm_mm->cpu_vm_mask)) {
- unsigned long addr = (unsigned long)kaddr;
- __cpuc_coherent_kern_range(addr, addr + len);
- }
-}
-#else
-extern void flush_cache_mm(struct mm_struct *mm);
-extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end);
-extern void flush_cache_page(struct vm_area_struct *vma, unsigned long user_addr, unsigned long pfn);
-extern void flush_ptrace_access(struct vm_area_struct *vma, struct page *page,
- unsigned long uaddr, void *kaddr,
- unsigned long len, int write);
-#endif
-
-#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
-
-/*
- * flush_cache_user_range is used when we want to ensure that the
- * Harvard caches are synchronised for the user space address range.
- * This is used for the ARM private sys_cacheflush system call.
- */
-#define flush_cache_user_range(vma,start,end) \
- __cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end))
-
-/*
- * Perform necessary cache operations to ensure that data previously
- * stored within this range of addresses can be executed by the CPU.
- */
-#define flush_icache_range(s,e) __cpuc_coherent_kern_range(s,e)
-
-/*
- * Perform necessary cache operations to ensure that the TLB will
- * see data written in the specified area.
- */
-#define clean_dcache_area(start,size) cpu_dcache_clean_area(start, size)
-
-/*
- * flush_dcache_page is used when the kernel has written to the page
- * cache page at virtual address page->virtual.
- *
- * If this page isn't mapped (ie, page_mapping == NULL), or it might
- * have userspace mappings, then we _must_ always clean + invalidate
- * the dcache entries associated with the kernel mapping.
- *
- * Otherwise we can defer the operation, and clean the cache when we are
- * about to change to user space. This is the same method as used on SPARC64.
- * See update_mmu_cache for the user space part.
- */
-extern void flush_dcache_page(struct page *);
-
-extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
-
-static inline void __flush_icache_all(void)
-{
- asm("mcr p15, 0, %0, c7, c5, 0 @ invalidate I-cache\n"
- :
- : "r" (0));
-}
-
-#define ARCH_HAS_FLUSH_ANON_PAGE
-static inline void flush_anon_page(struct vm_area_struct *vma,
- struct page *page, unsigned long vmaddr)
-{
- extern void __flush_anon_page(struct vm_area_struct *vma,
- struct page *, unsigned long);
- if (PageAnon(page))
- __flush_anon_page(vma, page, vmaddr);
-}
-
-#define flush_dcache_mmap_lock(mapping) \
- spin_lock_irq(&(mapping)->tree_lock)
-#define flush_dcache_mmap_unlock(mapping) \
- spin_unlock_irq(&(mapping)->tree_lock)
-
-#define flush_icache_user_range(vma,page,addr,len) \
- flush_dcache_page(page)
-
-/*
- * We don't appear to need to do anything here. In fact, if we did, we'd
- * duplicate cache flushing elsewhere performed by flush_dcache_page().
- */
-#define flush_icache_page(vma,page) do { } while (0)
-
-static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt,
- unsigned offset, size_t size)
-{
- const void *start = (void __force *)virt + offset;
- dmac_inv_range(start, start + size);
-}
-
-#define __cacheid_present(val) (val != read_cpuid(CPUID_ID))
-#define __cacheid_type_v7(val) ((val & (7 << 29)) == (4 << 29))
-
-#define __cacheid_vivt_prev7(val) ((val & (15 << 25)) != (14 << 25))
-#define __cacheid_vipt_prev7(val) ((val & (15 << 25)) == (14 << 25))
-#define __cacheid_vipt_nonaliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25))
-#define __cacheid_vipt_aliasing_prev7(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25 | 1 << 23))
-
-#define __cacheid_vivt(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vivt_prev7(val))
-#define __cacheid_vipt(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_prev7(val))
-#define __cacheid_vipt_nonaliasing(val) (__cacheid_type_v7(val) ? 1 : __cacheid_vipt_nonaliasing_prev7(val))
-#define __cacheid_vipt_aliasing(val) (__cacheid_type_v7(val) ? 0 : __cacheid_vipt_aliasing_prev7(val))
-#define __cacheid_vivt_asid_tagged_instr(val) (__cacheid_type_v7(val) ? ((val & (3 << 14)) == (1 << 14)) : 0)
-
-#if defined(CONFIG_CPU_CACHE_VIVT) && !defined(CONFIG_CPU_CACHE_VIPT)
-/*
- * VIVT caches only
- */
-#define cache_is_vivt() 1
-#define cache_is_vipt() 0
-#define cache_is_vipt_nonaliasing() 0
-#define cache_is_vipt_aliasing() 0
-#define icache_is_vivt_asid_tagged() 0
-
-#elif !defined(CONFIG_CPU_CACHE_VIVT) && defined(CONFIG_CPU_CACHE_VIPT)
-/*
- * VIPT caches only
- */
-#define cache_is_vivt() 0
-#define cache_is_vipt() 1
-#define cache_is_vipt_nonaliasing() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_vipt_nonaliasing(__val); \
- })
-
-#define cache_is_vipt_aliasing() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_vipt_aliasing(__val); \
- })
-
-#define icache_is_vivt_asid_tagged() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_vivt_asid_tagged_instr(__val); \
- })
-
-#else
-/*
- * VIVT or VIPT caches. Note that this is unreliable since ARM926
- * and V6 CPUs satisfy the "(val & (15 << 25)) == (14 << 25)" test.
- * There's no way to tell from the CacheType register what type (!)
- * the cache is.
- */
-#define cache_is_vivt() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- (!__cacheid_present(__val)) || __cacheid_vivt(__val); \
- })
-
-#define cache_is_vipt() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_present(__val) && __cacheid_vipt(__val); \
- })
-
-#define cache_is_vipt_nonaliasing() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_present(__val) && \
- __cacheid_vipt_nonaliasing(__val); \
- })
-
-#define cache_is_vipt_aliasing() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_present(__val) && \
- __cacheid_vipt_aliasing(__val); \
- })
-
-#define icache_is_vivt_asid_tagged() \
- ({ \
- unsigned int __val = read_cpuid(CPUID_CACHETYPE); \
- __cacheid_present(__val) && \
- __cacheid_vivt_asid_tagged_instr(__val); \
- })
-
-#endif
-
-#endif
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