arch/sparc/include/asm/cacheflush_64.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 #define flushw_all()    __asm__ __volatile__("flushw")
  12
  13 void __flushw_user(void);
  14 #define flushw_user() __flushw_user()
  15
  16 #define flush_user_windows flushw_user
  17 #define flush_register_windows flushw_all
  18
  19 /* These are the same regardless of whether this is an SMP kernel or not. */
  20 #define flush_cache_mm(__mm) \
  21         do { if ((__mm) == current->mm) flushw_user(); } while(0)
  22 #define flush_cache_dup_mm(mm) flush_cache_mm(mm)
  23 #define flush_cache_range(vma, start, end) \
  24         flush_cache_mm((vma)->vm_mm)
  25 #define flush_cache_page(vma, page, pfn) \
  26         flush_cache_mm((vma)->vm_mm)
  27
  28 /*
  29  * On spitfire, the icache doesn't snoop local stores and we don't
  30  * use block commit stores (which invalidate icache lines) during
  31  * module load, so we need this.
  32  */
  33 void flush_icache_range(unsigned long start, unsigned long end);
  34 void __flush_icache_page(unsigned long);
  35
  36 void __flush_dcache_page(void *addr, int flush_icache);
  37 void flush_dcache_page_impl(struct page *page);
  38 #ifdef CONFIG_SMP
  39 void smp_flush_dcache_page_impl(struct page *page, int cpu);
  40 void flush_dcache_page_all(struct mm_struct *mm, struct page *page);
  41 #else
  42 #define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page)
  43 #define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page)
  44 #endif
  45
  46 void __flush_dcache_range(unsigned long start, unsigned long end);
  47 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  48 void flush_dcache_page(struct page *page);
  49
  50 #define flush_icache_page(vma, pg)      do { } while(0)
  51 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
  52
  53 void flush_ptrace_access(struct vm_area_struct *, struct page *,
  54                          unsigned long uaddr, void *kaddr,
  55                          unsigned long len, int write);
  56
  57 #define copy_to_user_page(vma, page, vaddr, dst, src, len)              \
  58         do {                                                            \
  59                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
  60                 memcpy(dst, src, len);                                  \
  61                 flush_ptrace_access(vma, page, vaddr, src, len, 0);     \
  62         } while (0)
  63
  64 #define copy_from_user_page(vma, page, vaddr, dst, src, len)            \
  65         do {                                                            \
  66                 flush_cache_page(vma, vaddr, page_to_pfn(page));        \
  67                 memcpy(dst, src, len);                                  \
  68                 flush_ptrace_access(vma, page, vaddr, dst, len, 1);     \
  69         } while (0)
  70
  71 #define flush_dcache_mmap_lock(mapping)         do { } while (0)
  72 #define flush_dcache_mmap_unlock(mapping)       do { } while (0)
  73
  74 #define flush_cache_vmap(start, end)            do { } while (0)
  75 #define flush_cache_vunmap(start, end)          do { } while (0)
  76
  77 #endif /* !__ASSEMBLY__ */
  78
  79 #endif /* _SPARC64_CACHEFLUSH_H */