LXR linux/arch/parisc/include/asm/cacheflush.h

   1#ifndef _PARISC_CACHEFLUSH_H
   2#define _PARISC_CACHEFLUSH_H
   3
   4#include <linux/mm.h>
   5#include <linux/uaccess.h>
   6
   7/* The usual comment is "Caches aren't brain-dead on the <architecture>".
   8 * Unfortunately, that doesn't apply to PA-RISC. */
   9
  10/* Internal implementation */
  11void flush_data_cache_local(void *);  /* flushes local data-cache only */
  12void flush_instruction_cache_local(void *); /* flushes local code-cache only */
  13#ifdef CONFIG_SMP
  14void flush_data_cache(void); /* flushes data-cache only (all processors) */
  15void flush_instruction_cache(void); /* flushes i-cache only (all processors) */
  16#else
  17#define flush_data_cache() flush_data_cache_local(NULL)
  18#define flush_instruction_cache() flush_instruction_cache_local(NULL)
  19#endif
  20
  21#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
  22
  23void flush_user_icache_range_asm(unsigned long, unsigned long);
  24void flush_kernel_icache_range_asm(unsigned long, unsigned long);
  25void flush_user_dcache_range_asm(unsigned long, unsigned long);
  26void flush_kernel_dcache_range_asm(unsigned long, unsigned long);
  27void flush_kernel_dcache_page_asm(void *);
  28void flush_kernel_icache_page(void *);
  29void flush_user_dcache_page(unsigned long);
  30void flush_user_icache_page(unsigned long);
  31void flush_user_dcache_range(unsigned long, unsigned long);
  32void flush_user_icache_range(unsigned long, unsigned long);
  33
  34/* Cache flush operations */
  35
  36void flush_cache_all_local(void);
  37void flush_cache_all(void);
  38void flush_cache_mm(struct mm_struct *mm);
  39
  40#define flush_kernel_dcache_range(start,size) \
  41        flush_kernel_dcache_range_asm((start), (start)+(size));
  42/* vmap range flushes and invalidates.  Architecturally, we don't need
  43 * the invalidate, because the CPU should refuse to speculate once an
  44 * area has been flushed, so invalidate is left empty */
  45static inline void flush_kernel_vmap_range(void *vaddr, int size)
  46{
  47        unsigned long start = (unsigned long)vaddr;
  48
  49        flush_kernel_dcache_range_asm(start, start + size);
  50}
  51static inline void invalidate_kernel_vmap_range(void *vaddr, int size)
  52{
  53}
  54
  55#define flush_cache_vmap(start, end)            flush_cache_all()
  56#define flush_cache_vunmap(start, end)          flush_cache_all()
  57
  58#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
  59extern void flush_dcache_page(struct page *page);
  60
  61#define flush_dcache_mmap_lock(mapping) \
  62        spin_lock_irq(&(mapping)->tree_lock)
  63#define flush_dcache_mmap_unlock(mapping) \
  64        spin_unlock_irq(&(mapping)->tree_lock)
  65
  66#define flush_icache_page(vma,page)     do {            \
  67        flush_kernel_dcache_page(page);                 \
  68        flush_kernel_icache_page(page_address(page));   \
  69} while (0)
  70
  71#define flush_icache_range(s,e)         do {            \
  72        flush_kernel_dcache_range_asm(s,e);             \
  73        flush_kernel_icache_range_asm(s,e);             \
  74} while (0)
  75
  76#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
  77do { \
  78        flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  79        memcpy(dst, src, len); \
  80        flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \
  81} while (0)
  82
  83#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
  84do { \
  85        flush_cache_page(vma, vaddr, page_to_pfn(page)); \
  86        memcpy(dst, src, len); \
  87} while (0)
  88
  89void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn);
  90void flush_cache_range(struct vm_area_struct *vma,
  91                unsigned long start, unsigned long end);
  92
  93#define ARCH_HAS_FLUSH_ANON_PAGE
  94static inline void
  95flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
  96{
  97        if (PageAnon(page))
  98                flush_user_dcache_page(vmaddr);
  99}
 100
 101#define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE
 102void flush_kernel_dcache_page_addr(void *addr);
 103static inline void flush_kernel_dcache_page(struct page *page)
 104{
 105        flush_kernel_dcache_page_addr(page_address(page));
 106}
 107
 108#ifdef CONFIG_DEBUG_RODATA
 109void mark_rodata_ro(void);
 110#endif
 111
 112#ifdef CONFIG_PA8X00
 113/* Only pa8800, pa8900 needs this */
 114
 115#include <asm/kmap_types.h>
 116
 117#define ARCH_HAS_KMAP
 118
 119void kunmap_parisc(void *addr);
 120
 121static inline void *kmap(struct page *page)
 122{
 123        might_sleep();
 124        return page_address(page);
 125}
 126
 127#define kunmap(page)                    kunmap_parisc(page_address(page))
 128
 129static inline void *__kmap_atomic(struct page *page)
 130{
 131        pagefault_disable();
 132        return page_address(page);
 133}
 134
 135static inline void __kunmap_atomic(void *addr)
 136{
 137        kunmap_parisc(addr);
 138        pagefault_enable();
 139}
 140
 141#define kmap_atomic_prot(page, prot)    kmap_atomic(page)
 142#define kmap_atomic_pfn(pfn)    kmap_atomic(pfn_to_page(pfn))
 143#define kmap_atomic_to_page(ptr)        virt_to_page(ptr)
 144#endif
 145
 146#endif /* _PARISC_CACHEFLUSH_H */
 147
 148