1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _SPARC64_CACHEFLUSH_H 3 #define _SPARC64_CACHEFLUSH_H 4 5 #include <asm/page.h> 6 7 #ifndef __ASSEMBLY__ 8 9 #include <linux/mm.h> 10 11 /* Cache flush operations. */ 12 #define flushw_all() __asm__ __volatile__("flushw") 13 14 void __flushw_user(void); 15 #define flushw_user() __flushw_user() 16 17 #define flush_user_windows flushw_user 18 #define flush_register_windows flushw_all 19 20 /* These are the same regardless of whether this is an SMP kernel or not. */ 21 #define flush_cache_mm(__mm) \ 22 do { if ((__mm) == current->mm) flushw_user(); } while(0) 23 #define flush_cache_dup_mm(mm) flush_cache_mm(mm) 24 #define flush_cache_range(vma, start, end) \ 25 flush_cache_mm((vma)->vm_mm) 26 #define flush_cache_page(vma, page, pfn) \ 27 flush_cache_mm((vma)->vm_mm) 28 29 /* 30 * On spitfire, the icache doesn't snoop local stores and we don't 31 * use block commit stores (which invalidate icache lines) during 32 * module load, so we need this. 33 */ 34 void flush_icache_range(unsigned long start, unsigned long end); 35 void __flush_icache_page(unsigned long); 36 37 void __flush_dcache_page(void *addr, int flush_icache); 38 void flush_dcache_folio_impl(struct folio *folio); 39 #ifdef CONFIG_SMP 40 void smp_flush_dcache_folio_impl(struct folio *folio, int cpu); 41 void flush_dcache_folio_all(struct mm_struct *mm, struct folio *folio); 42 #else 43 #define smp_flush_dcache_folio_impl(folio, cpu) flush_dcache_folio_impl(folio) 44 #define flush_dcache_folio_all(mm, folio) flush_dcache_folio_impl(folio) 45 #endif 46 47 void __flush_dcache_range(unsigned long start, unsigned long end); 48 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 49 void flush_dcache_folio(struct folio *folio); 50 #define flush_dcache_folio flush_dcache_folio 51 static inline void flush_dcache_page(struct page *page) 52 { 53 flush_dcache_folio(page_folio(page)); 54 } 55 56 void flush_ptrace_access(struct vm_area_struct *, struct page *, 57 unsigned long uaddr, void *kaddr, 58 unsigned long len, int write); 59 60 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 61 do { \ 62 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 63 memcpy(dst, src, len); \ 64 flush_ptrace_access(vma, page, vaddr, src, len, 0); \ 65 } while (0) 66 67 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 68 do { \ 69 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 70 memcpy(dst, src, len); \ 71 flush_ptrace_access(vma, page, vaddr, dst, len, 1); \ 72 } while (0) 73 74 #define flush_dcache_mmap_lock(mapping) do { } while (0) 75 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 76 77 #define flush_cache_vmap(start, end) do { } while (0) 78 #define flush_cache_vunmap(start, end) do { } while (0) 79 80 #endif /* !__ASSEMBLY__ */ 81 82 #endif /* _SPARC64_CACHEFLUSH_H */ 83