1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _ASM_IA64_CACHEFLUSH_H 3 #define _ASM_IA64_CACHEFLUSH_H 4 5 /* 6 * Copyright (C) 2002 Hewlett-Packard Co 7 * David Mosberger-Tang <davidm@hpl.hp.com> 8 */ 9 10 #include <linux/page-flags.h> 11 #include <linux/bitops.h> 12 13 #include <asm/page.h> 14 15 /* 16 * Cache flushing routines. This is the kind of stuff that can be very expensive, so try 17 * to avoid them whenever possible. 18 */ 19 20 #define flush_cache_all() do { } while (0) 21 #define flush_cache_mm(mm) do { } while (0) 22 #define flush_cache_dup_mm(mm) do { } while (0) 23 #define flush_cache_range(vma, start, end) do { } while (0) 24 #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) 25 #define flush_icache_page(vma,page) do { } while (0) 26 #define flush_cache_vmap(start, end) do { } while (0) 27 #define flush_cache_vunmap(start, end) do { } while (0) 28 29 #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 30 #define flush_dcache_page(page) \ 31 do { \ 32 clear_bit(PG_arch_1, &(page)->flags); \ 33 } while (0) 34 35 #define flush_dcache_mmap_lock(mapping) do { } while (0) 36 #define flush_dcache_mmap_unlock(mapping) do { } while (0) 37 38 extern void flush_icache_range (unsigned long start, unsigned long end); 39 extern void clflush_cache_range(void *addr, int size); 40 41 42 #define flush_icache_user_range(vma, page, user_addr, len) \ 43 do { \ 44 unsigned long _addr = (unsigned long) page_address(page) + ((user_addr) & ~PAGE_MASK); \ 45 flush_icache_range(_addr, _addr + (len)); \ 46 } while (0) 47 48 #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ 49 do { memcpy(dst, src, len); \ 50 flush_icache_user_range(vma, page, vaddr, len); \ 51 } while (0) 52 #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ 53 memcpy(dst, src, len) 54 55 #endif /* _ASM_IA64_CACHEFLUSH_H */ 56
