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_page(unsigned long); 30 void flush_user_icache_page(unsigned long); 31 void flush_user_dcache_range(unsigned long, unsigned long); 32 void flush_user_icache_range(unsigned long, unsigned long); 33 34 /* Cache flush operations */ 35 36 void flush_cache_all_local(void); 37 void flush_cache_all(void); 38 void 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 */ 45 static 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 } 51 static 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 59 extern 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) \ 77 do { \ 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) \ 84 do { \ 85 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 86 memcpy(dst, src, len); \ 87 } while (0) 88 89 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); 90 void flush_cache_range(struct vm_area_struct *vma, 91 unsigned long start, unsigned long end); 92 93 #define ARCH_HAS_FLUSH_ANON_PAGE 94 static inline void 95 flush_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 102 void flush_kernel_dcache_page_addr(void *addr); 103 static 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 109 void 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 118 119 void kunmap_parisc(void *addr); 120 121 static 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)) 128 129 static inline void *__kmap_atomic(struct page *page) 130 { 131 pagefault_disable(); 132 return page_address(page); 133 } 134 135 static 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