include/asm-sparc64/cacheflush.h

   1 #ifndef _SPARC64_CACHEFLUSH_H
   2 #define _SPARC64_CACHEFLUSH_H
   3
   4 #include <asm/page.h>
   5
   6 #ifndef __ASSEMBLY__
   7
   8 #include <linux/mm.h>
   9
  10 /* Cache flush operations. */
  11
  12 /* These are the same regardless of whether this is an SMP kernel or not. */
  13 #define flush_cache_mm(__mm) \
  14         do { if ((__mm) == current->mm) flushw_user(); } while(0)
  15 #define flush_cache_range(vma, start, end) \
  16         flush_cache_mm((vma)->vm_mm)
  17 #define flush_cache_page(vma, page, pfn) \
  18         flush_cache_mm((vma)->vm_mm)
  19
  20 /*
  21  * On spitfire, the icache doesn't snoop local stores and we don't
  22  * use block commit stores (which invalidate icache lines) during
  23  * module load, so we need this.
  24  */
  25 extern void flush_icache_range(unsigned long start, unsigned long end);
  26 extern void __flush_icache_page(unsigned long);
  27
  28 extern void __flush_dcache_page(void *addr, int flush_icache);
  29 extern void flush_dcache_page_impl(struct page *page);
  30 #ifdef CONFIG_SMP
  31 extern void smp_flush_dcache_page_impl(struct page *page, int cpu);
  32 extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page);
  33 #else
  34 #define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page)
  35 #define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page)
  36 #endif
  37
  38 extern void __flush_dcache_range(unsigned long start, unsigned long end);
  39 extern void flush_dcache_page(struct page *page);
  40
  41 #define flush_icache_page(vma, pg)      do { } while(0)
  42 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  43
  44 extern void flush_ptrace_access(struct vm_area_struct *, struct page *,
  45                                 unsigned long uaddr, void *kaddr,
  46                                 unsigned long len, int write);
  47
  48 #define copy_to_user_page(vma, page, vaddr, dst, src, len)              \
  49         do {                                                            \
  50                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
  51                 memcpy(dst, src, len);                                  \
  52                 flush_ptrace_access(vma, page, vaddr, src, len, 0);     \
  53         } while (0)
  54
  55 #define copy_from_user_page(vma, page, vaddr, dst, src, len)            \
  56         do {                                                            \
  57                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
  58                 memcpy(dst, src, len);                                  \
  59                 flush_ptrace_access(vma, page, vaddr, dst, len, 1);     \
  60         } while (0)
  61
  62 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  63 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  64
  65 #define flush_cache_vmap(start, end)            do { } while (0)
  66 #define flush_cache_vunmap(start, end)          do { } while (0)
  67
  68 #ifdef CONFIG_DEBUG_PAGEALLOC
  69 /* internal debugging function */
  70 void kernel_map_pages(struct page *page, int numpages, int enable);
  71 #endif
  72
  73 #endif /* !__ASSEMBLY__ */
  74
  75 #endif /* _SPARC64_CACHEFLUSH_H */