arch/parisc/include/asm/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 /* vmap range flushes and invalidates.  Architecturally, we don't need
  42  * the invalidate, because the CPU should refuse to speculate once an
  43  * area has been flushed, so invalidate is left empty */
  44 static inline void flush_kernel_vmap_range(void *vaddr, int size)
  45 {
  46         unsigned long start = (unsigned long)vaddr;
  47
  48         flush_kernel_dcache_range_asm(start, start + size);
  49 }
  50 static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
  51 {
  52 }
  53
  54 #define flush_cache_vmap(start, end)            flush_cache_all()
  55 #define flush_cache_vunmap(start, end)          flush_cache_all()
  56
  57 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  58 extern void flush_dcache_page(struct page *page);
  59
  60 #define flush_dcache_mmap_lock(mapping) \
  61         spin_lock_irq(&(mapping)->tree_lock)
  62 #define flush_dcache_mmap_unlock(mapping) \
  63         spin_unlock_irq(&(mapping)->tree_lock)
  64
  65 #define flush_icache_page(vma,page)     do {            \
  66         flush_kernel_dcache_page(page);                 \
  67         flush_kernel_icache_page(page_address(page));   \
  68 } while (0)
  69
  70 #define flush_icache_range(s,e)         do {            \
  71         flush_kernel_dcache_range_asm(s,e);             \
  72         flush_kernel_icache_range_asm(s,e);             \
  73 } while (0)
  74
  75 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  76 do { \
  77         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  78         memcpy(dst, src, len); \
  79         flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
  80 } while (0)
  81
  82 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  83 do { \
  84         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  85         memcpy(dst, src, len); \
  86 } while (0)
  87
  88 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
  89 void flush_cache_range(struct vm_area_struct *vma,
  90                 unsigned long start, unsigned long end);
  91
  92 #define ARCH_HAS_FLUSH_ANON_PAGE
  93 static inline void
  94 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
  95 {
  96         if (PageAnon(page))
  97                 flush_user_dcache_page(vmaddr);
  98 }
  99
 100 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
 101 void flush_kernel_dcache_page_addr(void *addr);
 102 static inline void flush_kernel_dcache_page(struct page *page)
 103 {
 104         flush_kernel_dcache_page_addr(page_address(page));
 105 }
 106
 107 #ifdef CONFIG_DEBUG_RODATA
 108 void mark_rodata_ro(void);
 109 #endif
 110
 111 #ifdef CONFIG_PA8X00
 112 /* Only pa8800, pa8900 needs this */
 113
 114 #include <asm/kmap_types.h>
 115
 116 #define ARCH_HAS_KMAP
 117
 118 void kunmap_parisc(void *addr);
 119
 120 static inline void *kmap(struct page *page)
 121 {
 122         might_sleep();
 123         return page_address(page);
 124 }
 125
 126 #define kunmap(page)                    kunmap_parisc(page_address(page))
 127
 128 #define kmap_atomic(page, idx)          page_address(page)
 129
 130 #define kunmap_atomic(addr, idx)        kunmap_parisc(addr)
 131
 132 #define kmap_atomic_pfn(pfn, idx)       page_address(pfn_to_page(pfn))
 133 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
 134 #endif
 135
 136 #endif /* _PARISC_CACHEFLUSH_H */
 137