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 #include <linux/jump_label.h> 13 14 DECLARE_STATIC_KEY_TRUE(parisc_has_cache); 15 DECLARE_STATIC_KEY_TRUE(parisc_has_dcache); 16 DECLARE_STATIC_KEY_TRUE(parisc_has_icache); 17 18 #define flush_cache_dup_mm(mm) flush_cache_mm(mm) 19 20 void flush_user_icache_range_asm(unsigned long, unsigned long); 21 void flush_kernel_icache_range_asm(unsigned long, unsigned long); 22 void flush_user_dcache_range_asm(unsigned long, unsigned long); 23 void flush_kernel_dcache_range_asm(unsigned long, unsigned long); 24 void purge_kernel_dcache_range_asm(unsigned long, unsigned long); 25 void flush_kernel_dcache_page_asm(const void *addr); 26 void flush_kernel_icache_page(void *); 27 28 /* Cache flush operations */ 29 30 void flush_cache_all_local(void); 31 void flush_cache_all(void); 32 void flush_cache_mm(struct mm_struct *mm); 33 34 void flush_kernel_dcache_page_addr(const void *addr); 35 36 #define flush_kernel_dcache_range(start,size) \ 37 flush_kernel_dcache_range_asm((start), (start)+(size)); 38 39 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 40 void flush_kernel_vmap_range(void *vaddr, int size); 41 void invalidate_kernel_vmap_range(void *vaddr, int size); 42 43 #define flush_cache_vmap(start, end) flush_cache_all() 44 #define flush_cache_vunmap(start, end) flush_cache_all() 45 46 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 47 void flush_dcache_page(struct page *page); 48 49 #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 50 #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 51 #define flush_dcache_mmap_lock_irqsave(mapping, flags) \ 52 xa_lock_irqsave(&mapping->i_pages, flags) 53 #define flush_dcache_mmap_unlock_irqrestore(mapping, flags) \ 54 xa_unlock_irqrestore(&mapping->i_pages, flags) 55 56 #define flush_icache_page(vma,page) do { \ 57 flush_kernel_dcache_page_addr(page_address(page)); \ 58 flush_kernel_icache_page(page_address(page)); \ 59 } while (0) 60 61 #define flush_icache_range(s,e) do { \ 62 flush_kernel_dcache_range_asm(s,e); \ 63 flush_kernel_icache_range_asm(s,e); \ 64 } while (0) 65 66 void copy_to_user_page(struct vm_area_struct *vma, struct page *page, 67 unsigned long user_vaddr, void *dst, void *src, int len); 68 void copy_from_user_page(struct vm_area_struct *vma, struct page *page, 69 unsigned long user_vaddr, void *dst, void *src, int len); 70 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, 71 unsigned long pfn); 72 void flush_cache_range(struct vm_area_struct *vma, 73 unsigned long start, unsigned long end); 74 75 /* defined in pacache.S exported in cache.c used by flush_anon_page */ 76 void flush_dcache_page_asm(unsigned long phys_addr, unsigned long vaddr); 77 78 #define ARCH_HAS_FLUSH_ANON_PAGE 79 void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr); 80 81 #define ARCH_HAS_FLUSH_ON_KUNMAP 82 static inline void kunmap_flush_on_unmap(const void *addr) 83 { 84 flush_kernel_dcache_page_addr(addr); 85 } 86 87 #endif /* _PARISC_CACHEFLUSH_H */ 88 89