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 #define flush_kernel_dcache_range(start,size) \ 35 flush_kernel_dcache_range_asm((start), (start)+(size)); 36 37 /* The only way to flush a vmap range is to flush whole cache */ 38 #define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 39 void flush_kernel_vmap_range(void *vaddr, int size); 40 void invalidate_kernel_vmap_range(void *vaddr, int size); 41 42 void flush_cache_vmap(unsigned long start, unsigned long end); 43 #define flush_cache_vmap_early(start, end) do { } while (0) 44 void flush_cache_vunmap(unsigned long start, unsigned long end); 45 46 void flush_dcache_folio(struct folio *folio); 47 #define flush_dcache_folio flush_dcache_folio 48 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 49 static inline void flush_dcache_page(struct page *page) 50 { 51 flush_dcache_folio(page_folio(page)); 52 } 53 54 #define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 55 #define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 56 #define flush_dcache_mmap_lock_irqsave(mapping, flags) \ 57 xa_lock_irqsave(&mapping->i_pages, flags) 58 #define flush_dcache_mmap_unlock_irqrestore(mapping, flags) \ 59 xa_unlock_irqrestore(&mapping->i_pages, flags) 60 61 void flush_icache_pages(struct vm_area_struct *vma, struct page *page, 62 unsigned int nr); 63 #define flush_icache_pages flush_icache_pages 64 65 #define flush_icache_range(s,e) do { \ 66 flush_kernel_dcache_range_asm(s,e); \ 67 flush_kernel_icache_range_asm(s,e); \ 68 } while (0) 69 70 void copy_to_user_page(struct vm_area_struct *vma, struct page *page, 71 unsigned long user_vaddr, void *dst, void *src, int len); 72 void copy_from_user_page(struct vm_area_struct *vma, struct page *page, 73 unsigned long user_vaddr, void *dst, void *src, int len); 74 void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, 75 unsigned long pfn); 76 void flush_cache_range(struct vm_area_struct *vma, 77 unsigned long start, unsigned long end); 78 79 #define ARCH_HAS_FLUSH_ANON_PAGE 80 void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr); 81 82 #define ARCH_HAS_FLUSH_ON_KUNMAP 83 void kunmap_flush_on_unmap(const void *addr); 84 85 #endif /* _PARISC_CACHEFLUSH_H */ 86 87