1 /* 2 * 3 * Copyright 2013 Google Inc. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * cache.h: Cache maintenance API for x86 29 */ 30 31 #ifndef __ARCH_CACHE_H__ 32 #define __ARCH_CACHE_H__ 33 34 #include <stddef.h> 35 #include <stdint.h> 36 37 /* returns number of bytes per cache line */ 38 unsigned int dcache_line_bytes(void); 39 40 void dcache_invalidate_all(void); 41 void dcache_clean_invalidate_all(void); 42 void dcache_clean_all(void); 43 void dcache_clean_by_mva(void const *addr, size_t len); 44 void dcache_invalidate_by_mva(void const *addr, size_t len); 45 void dcache_clean_invalidate_by_mva(void const *addr, size_t len); 46 /* NOOPs mirroring ARM's cache API, since x86 devices usually cache snoop */ 47 #define dmb() 48 #define dsb() 49 #define cache_sync_instructions() 50 51 #endif 52