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
  31 /* Cache flush operations */
  32
  33 void flush_cache_all_local(void);
  34 void flush_cache_all(void);
  35 void flush_cache_mm(struct mm_struct *mm);
  36
  37 #define flush_kernel_dcache_range(start,size) \
  38         flush_kernel_dcache_range_asm((start), (start)+(size));
  39
  40 #define flush_cache_vmap(start, end)            flush_cache_all()
  41 #define flush_cache_vunmap(start, end)          flush_cache_all()
  42
  43 extern void flush_dcache_page(struct page *page);
  44
  45 #define flush_dcache_mmap_lock(mapping) \
  46         write_lock_irq(&(mapping)->tree_lock)
  47 #define flush_dcache_mmap_unlock(mapping) \
  48         write_unlock_irq(&(mapping)->tree_lock)
  49
  50 #define flush_icache_page(vma,page)     do {            \
  51         flush_kernel_dcache_page(page);                 \
  52         flush_kernel_icache_page(page_address(page));   \
  53 } while (0)
  54
  55 #define flush_icache_range(s,e)         do {            \
  56         flush_kernel_dcache_range_asm(s,e);             \
  57         flush_kernel_icache_range_asm(s,e);             \
  58 } while (0)
  59
  60 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  61 do { \
  62         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  63         memcpy(dst, src, len); \
  64         flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
  65 } while (0)
  66
  67 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  68 do { \
  69         flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  70         memcpy(dst, src, len); \
  71 } while (0)
  72
  73 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
  74 void flush_cache_range(struct vm_area_struct *vma,
  75                 unsigned long start, unsigned long end);
  76
  77 #define ARCH_HAS_FLUSH_ANON_PAGE
  78 static inline void
  79 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
  80 {
  81         if (PageAnon(page))
  82                 flush_user_dcache_page(vmaddr);
  83 }
  84
  85 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
  86 void flush_kernel_dcache_page_addr(void *addr);
  87 static inline void flush_kernel_dcache_page(struct page *page)
  88 {
  89         flush_kernel_dcache_page_addr(page_address(page));
  90 }
  91
  92 #ifdef CONFIG_DEBUG_RODATA
  93 void mark_rodata_ro(void);
  94 #endif
  95
  96 #ifdef CONFIG_PA8X00
  97 /* Only pa8800, pa8900 needs this */
  98 #define ARCH_HAS_KMAP
  99
 100 void kunmap_parisc(void *addr);
 101
 102 static inline void *kmap(struct page *page)
 103 {
 104         might_sleep();
 105         return page_address(page);
 106 }
 107
 108 #define kunmap(page)                    kunmap_parisc(page_address(page))
 109
 110 #define kmap_atomic(page, idx)          page_address(page)
 111
 112 #define kunmap_atomic(addr, idx)        kunmap_parisc(addr)
 113
 114 #define kmap_atomic_pfn(pfn, idx)       page_address(pfn_to_page(pfn))
 115 #define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
 116 #endif
 117
 118 #endif /* _PARISC_CACHEFLUSH_H */
 119