LXR linux/arch/sparc/include/asm/cacheflush

   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
  13extern 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 */
  33extern void flush_icache_range(unsigned long start, unsigned long end);
  34extern void __flush_icache_page(unsigned long);
  35
  36extern void __flush_dcache_page(void *addr, int flush_icache);
  37extern void flush_dcache_page_impl(struct page *page);
  38#ifdef CONFIG_SMP
  39extern void smp_flush_dcache_page_impl(struct page *page, int cpu);
  40extern 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
  46extern void __flush_dcache_range(unsigned long start, unsigned long end);
  47#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  48extern 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
  53extern 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#ifdef CONFIG_DEBUG_PAGEALLOC
  78/* internal debugging function */
  79void kernel_map_pages(struct page *page, int numpages, int enable);
  80#endif
  81
  82#endif /* !__ASSEMBLY__ */
  83
  84#endif /* _SPARC64_CACHEFLUSH_H */
  85