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