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) \ 30 do { \ 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 37 extern void flush_icache_range (unsigned long start, unsigned long end); 38 extern void clflush_cache_range(void *addr, int size); 39 40 41 #define flush_icache_user_range(vma, page, user_addr, len) \ 42 do { \ 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) \ 48 do { 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