1 #ifndef _PARISC_CACHEFLUSH_H 2 #define _PARISC_CACHEFLUSH_H 3 4 #include <linux/mm.h> 5 #include <linux/uaccess.h> 6 #include <asm/tlbflush.h> 7 8 /* The usual comment is "Caches aren't brain-dead on the <architecture>". 9 * Unfortunately, that doesn't apply to PA-RISC. */ 10 11 /* Internal implementation */ 12 void flush_data_cache_local(void *); /* flushes local data-cache only */ 13 void flush_instruction_cache_local(void *); /* flushes local code-cache only */ 14 #ifdef CONFIG_SMP 15 void flush_data_cache(void); /* flushes data-cache only (all processors) */ 16 void flush_instruction_cache(void); /* flushes i-cache only (all processors) */ 17 #else 18 #define flush_data_cache() flush_data_cache_local(NULL) 19 #define flush_instruction_cache() flush_instruction_cache_local(NULL) 20 #endif 21 22 #define flush_cache_dup_mm(mm) flush_cache_mm(mm) 23 24 void flush_user_icache_range_asm(unsigned long, unsigned long); 25 void flush_kernel_icache_range_asm(unsigned long, unsigned long); 26 void flush_user_dcache_range_asm(unsigned long, unsigned long); 27 void flush_kernel_dcache_range_asm(unsigned long, unsigned long); 28 void flush_kernel_dcache_page_asm(void *); 29 void flush_kernel_icache_page(void *); 30 void flush_user_dcache_range(unsigned long, unsigned long); 31 void flush_user_icache_range(unsigned long, unsigned long); 32 33 /* Cache flush operations */ 34 35 void flush_cache_all_local(void); 36 void flush_cache_all(void); 37 void flush_cache_mm(struct mm_struct *mm); 38 39 #define ARCH_HAS_FLUSH_KERNEL_DCACHE_PAGE 40 void flush_kernel_dcache_page_addr(void *addr); 41 static inline void flush_kernel_dcache_page(struct page *page) 42 { 43 flush_kernel_dcache_page_addr(page_address(page)); 44 } 45 46 #define flush_kernel_dcache_range(start,size) \ 47 flush_kernel_dcache_range_asm((start), (start)+(size)); 48 /* vmap range flushes and invalidates. Architecturally, we don't need 49 * the invalidate, because the CPU should refuse to speculate once an 50 * area has been flushed, so invalidate is left empty */ 51 static inline void flush_kernel_vmap_range(void *vaddr, int size) 52 { 53 unsigned long start = (unsigned long)vaddr; 54 55 flush_kernel_dcache_range_asm(start, start + size); 56 } 57 static inline void invalidate_kernel_vmap_range(void *vaddr, int size) 58 { 59 unsigned long start = (unsigned long)vaddr; 60 void *cursor = vaddr; 61 62 for ( ; cursor < vaddr + size; cursor += PAGE_SIZE) { 63 struct page *page = vmalloc_to_page(cursor); 64 65 if (test_and_clear_bit(PG_dcache_dirty, &page->flags)) 66 flush_kernel_dcache_page(page); 67 } 68 flush_kernel_dcache_range_asm(start, start + size); 69 } 70 71 #define flush_cache_vmap(start, end) flush_cache_all() 72 #define flush_cache_vunmap(start, end) flush_cache_all() 73 74 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 75 extern void flush_dcache_page(struct page *page); 76 77 #define flush_dcache_mmap_lock(mapping) \ 78 spin_lock_irq(&(mapping)->tree_lock) 79 #define flush_dcache_mmap_unlock(mapping) \ 80 spin_unlock_irq(&(mapping)->tree_lock) 81 82 #define flush_icache_page(vma,page) do { \ 83 flush_kernel_dcache_page(page); \ 84 flush_kernel_icache_page(page_address(page)); \ 85 } while (0) 86 87 #define flush_icache_range(s,e) do { \ 88 flush_kernel_dcache_range_asm(s,e); \ 89 flush_kernel_icache_range_asm(s,e); \ 90 } while (0) 91 92 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 93 do { \ 94 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 95 memcpy(dst, src, len); \ 96 flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \ 97 } while (0) 98 99 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 100 do { \ 101 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 102 memcpy(dst, src, len); \ 103 } while (0) 104 105 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); 106 void flush_cache_range(struct vm_area_struct *vma, 107 unsigned long start, unsigned long end); 108 109 /* defined in pacache.S exported in cache.c used by flush_anon_page */ 110 void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); 111 112 #define ARCH_HAS_FLUSH_ANON_PAGE 113 static inline void 114 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) 115 { 116 if (PageAnon(page)) { 117 flush_tlb_page(vma, vmaddr); 118 preempt_disable(); 119 flush_dcache_page_asm(page_to_phys(page), vmaddr); 120 preempt_enable(); 121 } 122 } 123 124 #ifdef CONFIG_DEBUG_RODATA 125 void mark_rodata_ro(void); 126 #endif 127 128 #include <asm/kmap_types.h> 129 130 #define ARCH_HAS_KMAP 131 132 static inline void *kmap(struct page *page) 133 { 134 might_sleep(); 135 return page_address(page); 136 } 137 138 static inline void kunmap(struct page *page) 139 { 140 flush_kernel_dcache_page_addr(page_address(page)); 141 } 142 143 static inline void *kmap_atomic(struct page *page) 144 { 145 preempt_disable(); 146 pagefault_disable(); 147 return page_address(page); 148 } 149 150 static inline void __kunmap_atomic(void *addr) 151 { 152 flush_kernel_dcache_page_addr(addr); 153 pagefault_enable(); 154 preempt_enable(); 155 } 156 157 #define kmap_atomic_prot(page, prot) kmap_atomic(page) 158 #define kmap_atomic_pfn(pfn) kmap_atomic(pfn_to_page(pfn)) 159 #define kmap_atomic_to_page(ptr) virt_to_page(ptr) 160 161 #endif /* _PARISC_CACHEFLUSH_H */ 162 163