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_page_impl(struct page *page); 39 #ifdef CONFIG_SMP 40 void smp_flush_dcache_page_impl(struct page *page, int cpu); 41 void flush_dcache_page_all(struct mm_struct *mm, struct page *page); 42 #else 43 #define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page) 44 #define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page) 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_page(struct page *page); 50 51 #define flush_icache_page(vma, pg) do { } while(0) 52 #define flush_icache_user_range(vma,pg,adr,len) do { } while (0) 53 54 void flush_ptrace_access(struct vm_area_struct *, struct page *, 55 unsigned long uaddr, void *kaddr, 56 unsigned long len, int write); 57 58 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 59 do { \ 60 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 61 memcpy(dst, src, len); \ 62 flush_ptrace_access(vma, page, vaddr, src, len, 0); \ 63 } while (0) 64 65 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 66 do { \ 67 flush_cache_page(vma, vaddr, page_to_pfn(page)); \ 68 memcpy(dst, src, len); \ 69 flush_ptrace_access(vma, page, vaddr, dst, len, 1); \ 70 } while (0) 71 72 #define flush_dcache_mmap_lock(mapping) do { } while (0) 73 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 74 75 #define flush_cache_vmap(start, end) do { } while (0) 76 #define flush_cache_vunmap(start, end) do { } while (0) 77 78 #endif /* !__ASSEMBLY__ */ 79 80 #endif /* _SPARC64_CACHEFLUSH_H */ 81