include/asm-sparc64/cacheflush.h

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