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