sh: Kill off unused cpu/cacheflush.h.

[mv-sheeva.git] / arch / sh / include / asm / cacheflush.h

diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index 4c5462daa74cffaad2f14b05c1e1f58e54097d72..32299b7c2b4879a90184cae76a4756d11b559283 100644 (file)
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -3,45 +3,48 @@
 
 #ifdef __KERNEL__
 
-#ifdef CONFIG_CACHE_OFF
+#include <linux/mm.h>
+
 /*
- * Nothing to do when the cache is disabled, initial flush and explicit
- * disabling is handled at CPU init time.
+ * Cache flushing:
+ *
+ *  - flush_cache_all() flushes entire cache
+ *  - flush_cache_mm(mm) flushes the specified mm context's cache lines
+ *  - flush_cache_dup mm(mm) handles cache flushing when forking
+ *  - flush_cache_page(mm, vmaddr, pfn) flushes a single page
+ *  - flush_cache_range(vma, start, end) flushes a range of pages
  *
- * See arch/sh/kernel/cpu/init.c:cache_init().
+ *  - flush_dcache_page(pg) flushes(wback&invalidates) a page for dcache
+ *  - flush_icache_range(start, end) flushes(invalidates) a range for icache
+ *  - flush_icache_page(vma, pg) flushes(invalidates) a page for icache
+ *  - flush_cache_sigtramp(vaddr) flushes the signal trampoline
  */
-#define p3_cache_init()                                do { } while (0)
-#define flush_cache_all()                      do { } while (0)
-#define flush_cache_mm(mm)                     do { } while (0)
-#define flush_cache_dup_mm(mm)                 do { } while (0)
-#define flush_cache_range(vma, start, end)     do { } while (0)
-#define flush_cache_page(vma, vmaddr, pfn)     do { } while (0)
-#define flush_dcache_page(page)                        do { } while (0)
-#define flush_icache_range(start, end)         do { } while (0)
-#define flush_icache_page(vma,pg)              do { } while (0)
-#define flush_dcache_mmap_lock(mapping)                do { } while (0)
-#define flush_dcache_mmap_unlock(mapping)      do { } while (0)
-#define flush_cache_sigtramp(vaddr)            do { } while (0)
-#define flush_icache_user_range(vma,pg,adr,len)        do { } while (0)
-#define __flush_wback_region(start, size)      do { (void)(start); } while (0)
-#define __flush_purge_region(start, size)      do { (void)(start); } while (0)
-#define __flush_invalidate_region(start, size) do { (void)(start); } while (0)
-#else
-#include <cpu/cacheflush.h>
+extern void (*flush_cache_all)(void);
+extern void (*flush_cache_mm)(struct mm_struct *mm);
+extern void (*flush_cache_dup_mm)(struct mm_struct *mm);
+extern void (*flush_cache_page)(struct vm_area_struct *vma,
+                               unsigned long addr, unsigned long pfn);
+extern void (*flush_cache_range)(struct vm_area_struct *vma,
+                                unsigned long start, unsigned long end);
+extern void (*flush_dcache_page)(struct page *page);
+extern void (*flush_icache_range)(unsigned long start, unsigned long end);
+extern void (*flush_icache_page)(struct vm_area_struct *vma,
+                                struct page *page);
+extern void (*flush_cache_sigtramp)(unsigned long address);
 
-/*
- * Consistent DMA requires that the __flush_xxx() primitives must be set
- * for any of the enabled non-coherent caches (most of the UP CPUs),
- * regardless of PIPT or VIPT cache configurations.
- */
+extern void (*__flush_wback_region)(void *start, int size);
+extern void (*__flush_purge_region)(void *start, int size);
+extern void (*__flush_invalidate_region)(void *start, int size);
 
-/* Flush (write-back only) a region (smaller than a page) */
-extern void __flush_wback_region(void *start, int size);
-/* Flush (write-back & invalidate) a region (smaller than a page) */
-extern void __flush_purge_region(void *start, int size);
-/* Flush (invalidate only) a region (smaller than a page) */
-extern void __flush_invalidate_region(void *start, int size);
-#endif
+#define ARCH_HAS_FLUSH_ANON_PAGE
+extern void __flush_anon_page(struct page *page, unsigned long);
+
+static inline void flush_anon_page(struct vm_area_struct *vma,
+                                  struct page *page, unsigned long vmaddr)
+{
+       if (boot_cpu_data.dcache.n_aliases && PageAnon(page))
+               __flush_anon_page(page, vmaddr);
+}
 
 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
 static inline void flush_kernel_dcache_page(struct page *page)
@@ -49,7 +52,6 @@ static inline void flush_kernel_dcache_page(struct page *page)
        flush_dcache_page(page);
 }
 
-#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_CACHE_OFF)
 extern void copy_to_user_page(struct vm_area_struct *vma,
        struct page *page, unsigned long vaddr, void *dst, const void *src,
        unsigned long len);
@@ -57,23 +59,20 @@ extern void copy_to_user_page(struct vm_area_struct *vma,
 extern void copy_from_user_page(struct vm_area_struct *vma,
        struct page *page, unsigned long vaddr, void *dst, const void *src,
        unsigned long len);
-#else
-#define copy_to_user_page(vma, page, vaddr, dst, src, len)     \
-       do {                                                    \
-               flush_cache_page(vma, vaddr, page_to_pfn(page));\
-               memcpy(dst, src, len);                          \
-               flush_icache_user_range(vma, page, vaddr, len); \
-       } while (0)
-
-#define copy_from_user_page(vma, page, vaddr, dst, src, len)   \
-       do {                                                    \
-               flush_cache_page(vma, vaddr, page_to_pfn(page));\
-               memcpy(dst, src, len);                          \
-       } while (0)
-#endif
 
 #define flush_cache_vmap(start, end)           flush_cache_all()
 #define flush_cache_vunmap(start, end)         flush_cache_all()
 
+#define flush_dcache_mmap_lock(mapping)                do { } while (0)
+#define flush_dcache_mmap_unlock(mapping)      do { } while (0)
+
+void kmap_coherent_init(void);
+void *kmap_coherent(struct page *page, unsigned long addr);
+void kunmap_coherent(void);
+
+#define PG_dcache_dirty        PG_arch_1
+
+void cpu_cache_init(void);
+
 #endif /* __KERNEL__ */
 #endif /* __ASM_SH_CACHEFLUSH_H */