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Linux/arch/sparc/include/asm/cacheflush_64.h

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  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 */
 80 

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