cacheflush.h (1888B)
1/* SPDX-License-Identifier: GPL-2.0 */ 2 3#ifndef __ABI_CSKY_CACHEFLUSH_H 4#define __ABI_CSKY_CACHEFLUSH_H 5 6#include <linux/mm.h> 7#include <asm/string.h> 8#include <asm/cache.h> 9 10#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 11extern void flush_dcache_page(struct page *); 12 13#define flush_cache_mm(mm) dcache_wbinv_all() 14#define flush_cache_page(vma, page, pfn) cache_wbinv_all() 15#define flush_cache_dup_mm(mm) cache_wbinv_all() 16 17#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 18#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 19 20#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 21static inline void flush_kernel_vmap_range(void *addr, int size) 22{ 23 dcache_wbinv_all(); 24} 25static inline void invalidate_kernel_vmap_range(void *addr, int size) 26{ 27 dcache_wbinv_all(); 28} 29 30#define ARCH_HAS_FLUSH_ANON_PAGE 31static inline void flush_anon_page(struct vm_area_struct *vma, 32 struct page *page, unsigned long vmaddr) 33{ 34 if (PageAnon(page)) 35 cache_wbinv_all(); 36} 37 38/* 39 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken. 40 * Use cache_wbinv_all() here and need to be improved in future. 41 */ 42extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); 43#define flush_cache_vmap(start, end) cache_wbinv_all() 44#define flush_cache_vunmap(start, end) cache_wbinv_all() 45 46#define flush_icache_page(vma, page) do {} while (0); 47#define flush_icache_range(start, end) cache_wbinv_range(start, end) 48#define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end) 49#define flush_icache_deferred(mm) do {} while (0); 50 51#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 52do { \ 53 memcpy(dst, src, len); \ 54} while (0) 55 56#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 57do { \ 58 memcpy(dst, src, len); \ 59 cache_wbinv_all(); \ 60} while (0) 61 62#endif /* __ABI_CSKY_CACHEFLUSH_H */