err.no Git - linux-2.6/blob - include/asm-parisc/cacheflush.h

   1 #ifndef _PARISC_CACHEFLUSH_H
   2 #define _PARISC_CACHEFLUSH_H
   3
   4 #include <linux/mm.h>
   5
   6 /* The usual comment is "Caches aren't brain-dead on the <architecture>".
   7  * Unfortunately, that doesn't apply to PA-RISC. */
   8
   9 /* Internal implementation */
  10 void flush_data_cache_local(void *);  /* flushes local data-cache only */
  11 void flush_instruction_cache_local(void *); /* flushes local code-cache only */
  12 #ifdef CONFIG_SMP
  13 void flush_data_cache(void); /* flushes data-cache only (all processors) */
  14 void flush_instruction_cache(void); /* flushes i-cache only (all processors) */
  15 #else
  16 #define flush_data_cache() flush_data_cache_local(NULL)
  17 #define flush_instruction_cache() flush_instruction_cache_local(NULL)
  18 #endif
  19
  20 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
  21
  22 void flush_user_icache_range_asm(unsigned long, unsigned long);
  23 void flush_kernel_icache_range_asm(unsigned long, unsigned long);
  24 void flush_user_dcache_range_asm(unsigned long, unsigned long);
  25 void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
  26 void flush_kernel_dcache_page_asm(void *);
  27 void flush_kernel_icache_page(void *);
  28 void flush_user_dcache_page(unsigned long);
  29 void flush_user_icache_page(unsigned long);
  30 void flush_user_dcache_range(unsigned long, unsigned long);
  31 void flush_user_icache_range(unsigned long, unsigned long);
  32
  33 /* Cache flush operations */
  34
  35 void flush_cache_all_local(void);
  36 void flush_cache_all(void);
  37 void flush_cache_mm(struct mm_struct *mm);
  38
  39 #define flush_kernel_dcache_range(start,size) \
  40         flush_kernel_dcache_range_asm((start), (start)+(size));
  41
  42 #define flush_cache_vmap(start, end)            flush_cache_all()
  43 #define flush_cache_vunmap(start, end)          flush_cache_all()
  44
  45 extern void flush_dcache_page(struct page *page);
  46
  47 #define flush_dcache_mmap_lock(mapping) \
  48         write_lock_irq(&(mapping)->tree_lock)
  49 #define flush_dcache_mmap_unlock(mapping) \
  50         write_unlock_irq(&(mapping)->tree_lock)
  51
  52 #define flush_icache_page(vma,page)     do {            \
  53         flush_kernel_dcache_page(page);                 \
  54         flush_kernel_icache_page(page_address(page));   \
  55 } while (0)
  56
  57 #define flush_icache_range(s,e)         do {            \
  58         flush_kernel_dcache_range_asm(s,e);             \
  59         flush_kernel_icache_range_asm(s,e);             \
  60 } while (0)
  61
  62 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  63 do { \
  64         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  65         memcpy(dst, src, len); \
  66         flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
  67 } while (0)
  68
  69 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  70 do { \
  71         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  72         memcpy(dst, src, len); \
  73 } while (0)
  74
  75 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
  76 void flush_cache_range(struct vm_area_struct *vma,
  77                 unsigned long start, unsigned long end);
  78
  79 #define ARCH_HAS_FLUSH_ANON_PAGE
  80 static inline void
  81 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
  82 {
  83         if (PageAnon(page))
  84                 flush_user_dcache_page(vmaddr);
  85 }
  86
  87 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
  88 void flush_kernel_dcache_page_addr(void *addr);
  89 static inline void flush_kernel_dcache_page(struct page *page)
  90 {
  91         flush_kernel_dcache_page_addr(page_address(page));
  92 }
  93
  94 #ifdef CONFIG_DEBUG_RODATA
  95 void mark_rodata_ro(void);
  96 #endif
  97
  98 #ifdef CONFIG_PA8X00
  99 /* Only pa8800, pa8900 needs this */
 100 #define ARCH_HAS_KMAP
 101
 102 void kunmap_parisc(void *addr);
 103
 104 static inline void *kmap(struct page *page)
 105 {
 106         might_sleep();
 107         return page_address(page);
 108 }
 109
 110 #define kunmap(page)                    kunmap_parisc(page_address(page))
 111
 112 #define kmap_atomic(page, idx)          page_address(page)
 113
 114 #define kunmap_atomic(addr, idx)        kunmap_parisc(addr)
 115
 116 #define kmap_atomic_pfn(pfn, idx)       page_address(pfn_to_page(pfn))
 117 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
 118 #endif
 119
 120 #endif /* _PARISC_CACHEFLUSH_H */
 121