1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _PARISC_CACHEFLUSH_H 3 #define _PARISC_CACHEFLUSH_H 4 5 #include <linux/mm.h> 6 #include <linux/uaccess.h> 7 #include <asm/tlbflush.h> 8 9 /* The usual comment is "Caches aren't brain-dead on the <architecture>". 10 * Unfortunately, that doesn't apply to PA-RISC. */ 11 12 /* Internal implementation */ 13 void flush_data_cache_local(void *); /* flushes local data-cache only */ 14 void flush_instruction_cache_local(void *); /* flushes local code-cache only */ 15 #ifdef CONFIG_SMP 16 void flush_data_cache(void); /* flushes data-cache only (all processors) */ 17 void flush_instruction_cache(void); /* flushes i-cache only (all processors) */ 18 #else 19 #define flush_data_cache() flush_data_cache_local(NULL) 20 #define flush_instruction_cache() flush_instruction_cache_local(NULL) 21 #endif 22 23 #define flush_cache_dup_mm(mm) flush_cache_mm(mm) 24 25 void flush_user_icache_range_asm(unsigned long, unsigned long); 26 void flush_kernel_icache_range_asm(unsigned long, unsigned long); 27 void flush_user_dcache_range_asm(unsigned long, unsigned long); 28 void flush_kernel_dcache_range_asm(unsigned long, unsigned long); 29 void purge_kernel_dcache_range_asm(unsigned long, unsigned long); 30 void flush_kernel_dcache_page_asm(void *); 31 void flush_kernel_icache_page(void *); 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 49 void flush_kernel_vmap_range(void *vaddr, int size); 50 void invalidate_kernel_vmap_range(void *vaddr, int size); 51 52 #define flush_cache_vmap(start, end) flush_cache_all() 53 #define flush_cache_vunmap(start, end) flush_cache_all() 54 55 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 56 extern void flush_dcache_page(struct page *page); 57 58 #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 59 #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 60 61 #define flush_icache_page(vma,page) do { \ 62 flush_kernel_dcache_page(page); \ 63 flush_kernel_icache_page(page_address(page)); \ 64 } while (0) 65 66 #define flush_icache_range(s,e) do { \ 67 flush_kernel_dcache_range_asm(s,e); \ 68 flush_kernel_icache_range_asm(s,e); \ 69 } while (0) 70 71 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 72 do { \ 73 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 74 memcpy(dst, src, len); \ 75 flush_kernel_dcache_range_asm((unsigned long)dst, (unsigned long)dst + len); \ 76 } while (0) 77 78 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 79 do { \ 80 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 81 memcpy(dst, src, len); \ 82 } while (0) 83 84 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn); 85 void flush_cache_range(struct vm_area_struct *vma, 86 unsigned long start, unsigned long end); 87 88 /* defined in pacache.S exported in cache.c used by flush_anon_page */ 89 void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); 90 91 #define ARCH_HAS_FLUSH_ANON_PAGE 92 static inline void 93 flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr) 94 { 95 if (PageAnon(page)) { 96 flush_tlb_page(vma, vmaddr); 97 preempt_disable(); 98 flush_dcache_page_asm(page_to_phys(page), vmaddr); 99 preempt_enable(); 100 } 101 } 102 103 #define ARCH_HAS_FLUSH_ON_KUNMAP 104 static inline void kunmap_flush_on_unmap(void *addr) 105 { 106 flush_kernel_dcache_page_addr(addr); 107 } 108 109 #endif /* _PARISC_CACHEFLUSH_H */ 110 111