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 */ 11 void flush_data_cache_local(void *); /* flushes local data-cache only */ 12 void flush_instruction_cache_local(void *); /* flushes local code-cache only */ 13 #ifdef CONFIG_SMP 14 void flush_data_cache(void); /* flushes data-cache only (all processors) */ 15 void 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 23 void flush_user_icache_range_asm(unsigned long, unsigned long); 24 void flush_kernel_icache_range_asm(unsigned long, unsigned long); 25 void flush_user_dcache_range_asm(unsigned long, unsigned long); 26 void flush_kernel_dcache_range_asm(unsigned long, unsigned long); 27 void flush_kernel_dcache_page_asm(void *); 28 void flush_kernel_icache_page(void *); 29 void flush_user_dcache_range(unsigned long, unsigned long); 30 void flush_user_icache_range(unsigned long, unsigned long); 31 32 /* Cache flush operations */ 33 34 void flush_cache_all_local(void); 35 void flush_cache_all(void); 36 void flush_cache_mm(struct mm_struct *mm); 37 38 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE 39 void flush_kernel_dcache_page_addr(void *addr); 40 static inline void flush_kernel_dcache_page(struct page *page) 41 { 42 flush_kernel_dcache_page_addr(page_address(page)); 43 } 44 45 #define flush_kernel_dcache_range(start,size) \ 46 flush_kernel_dcache_range_asm((start), (start)+(size)); 47 /* vmap range flushes and invalidates. Architecturally, we don't need 48 * the invalidate, because the CPU should refuse to speculate once an 49 * area has been flushed, so invalidate is left empty */ 50 static inline void flush_kernel_vmap_range(void *vaddr, int size) 51 { 52 unsigned long start = (unsigned long)vaddr; 53 54 flush_kernel_dcache_range_asm(start, start + size); 55 } 56 static inline void invalidate_kernel_vmap_range(void *vaddr, int size) 57 { 58 unsigned long start = (unsigned long)vaddr; 59 void *cursor = vaddr; 60 61 for ( ; cursor < vaddr + size; cursor += PAGE_SIZE) { 62 struct page *page = vmalloc_to_page(cursor); 63 64 if (test_and_clear_bit(PG_dcache_dirty, &page->flags)) 65 flush_kernel_dcache_page(page); 66 } 67 flush_kernel_dcache_range_asm(start, start + size); 68 } 69 70 #define flush_cache_vmap(start, end) flush_cache_all() 71 #define flush_cache_vunmap(start, end) flush_cache_all() 72 73 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 74 extern void flush_dcache_page(struct page *page); 75 76 #define flush_dcache_mmap_lock(mapping) \ 77 spin_lock_irq(&(mapping)->tree_lock) 78 #define flush_dcache_mmap_unlock(mapping) \ 79 spin_unlock_irq(&(mapping)->tree_lock) 80 81 #define flush_icache_page(vma,page) do { \ 82 flush_kernel_dcache_page(page); \ 83 flush_kernel_icache_page(page_address(page)); \ 84 } while (0) 85 86 #define flush_icache_range(s,e) do { \ 87 flush_kernel_dcache_range_asm(s,e); \ 88 flush_kernel_icache_range_asm(s,e); \ 89 } while (0) 90 91 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 92 do { \ 93 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 94 memcpy(dst, src, len); \ 95 flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \ 96 } while (0) 97 98 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 99 do { \ 100 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 101 memcpy(dst, src, len); \ 102 } while (0) 103 104 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); 105 void flush_cache_range(struct vm_area_struct *vma, 106 unsigned long start, unsigned long end); 107 108 /* defined in pacache.S exported in cache.c used by flush_anon_page */ 109 void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); 110 111 #define ARCH_HAS_FLUSH_ANON_PAGE 112 static inline void 113 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) 114 { 115 if (PageAnon(page)) 116 flush_dcache_page_asm(page_to_phys(page), vmaddr); 117 } 118 119 #ifdef CONFIG_DEBUG_RODATA 120 void mark_rodata_ro(void); 121 #endif 122 123 #ifdef CONFIG_PA8X00 124 /* Only pa8800, pa8900 needs this */ 125 126 #include <asm/kmap_types.h> 127 128 #define ARCH_HAS_KMAP 129 130 void kunmap_parisc(void *addr); 131 132 static inline void *kmap(struct page *page) 133 { 134 might_sleep(); 135 return page_address(page); 136 } 137 138 #define kunmap(page) kunmap_parisc(page_address(page)) 139 140 static inline void *__kmap_atomic(struct page *page) 141 { 142 pagefault_disable(); 143 return page_address(page); 144 } 145 146 static inline void __kunmap_atomic(void *addr) 147 { 148 kunmap_parisc(addr); 149 pagefault_enable(); 150 } 151 152 #define kmap_atomic_prot(page, prot) kmap_atomic(page) 153 #define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) 154 #define kmap_atomic_to_page(ptr) virt_to_page(ptr) 155 #endif 156 157 #endif /* _PARISC_CACHEFLUSH_H */ 158 159