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 *); 12void flush_dcache_folio(struct folio *); 13#define flush_dcache_folio flush_dcache_folio 14 15#define flush_cache_mm(mm) dcache_wbinv_all() 16#define flush_cache_page(vma, page, pfn) cache_wbinv_all() 17#define flush_cache_dup_mm(mm) cache_wbinv_all() 18 19#define flush_dcache_mmap_lock(mapping) xa_lock_irq(&mapping->i_pages) 20#define flush_dcache_mmap_unlock(mapping) xa_unlock_irq(&mapping->i_pages) 21 22#define ARCH_IMPLEMENTS_FLUSH_KERNEL_VMAP_RANGE 1 23static inline void flush_kernel_vmap_range(void *addr, int size) 24{ 25 dcache_wbinv_all(); 26} 27static inline void invalidate_kernel_vmap_range(void *addr, int size) 28{ 29 dcache_wbinv_all(); 30} 31 32#define ARCH_HAS_FLUSH_ANON_PAGE 33static inline void flush_anon_page(struct vm_area_struct *vma, 34 struct page *page, unsigned long vmaddr) 35{ 36 if (PageAnon(page)) 37 cache_wbinv_all(); 38} 39 40/* 41 * if (current_mm != vma->mm) cache_wbinv_range(start, end) will be broken. 42 * Use cache_wbinv_all() here and need to be improved in future. 43 */ 44extern void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end); 45#define flush_cache_vmap(start, end) cache_wbinv_all() 46#define flush_cache_vmap_early(start, end) do { } while (0) 47#define flush_cache_vunmap(start, end) cache_wbinv_all() 48 49#define flush_icache_range(start, end) cache_wbinv_range(start, end) 50#define flush_icache_mm_range(mm, start, end) cache_wbinv_range(start, end) 51#define flush_icache_deferred(mm) do {} while (0); 52 53#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 54do { \ 55 memcpy(dst, src, len); \ 56} while (0) 57 58#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 59do { \ 60 memcpy(dst, src, len); \ 61 cache_wbinv_all(); \ 62} while (0) 63 64#endif /* __ABI_CSKY_CACHEFLUSH_H */ 65