1 /* 2 * Copyright (c) 2011 The Chromium OS Authors. 3 * 4 * See file CREDITS for list of people who contributed to this 5 * project. 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License as 9 * published by the Free Software Foundation; either version 2 of 10 * the License, or (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 20 * MA 02111-1307 USA 21 */ 22 23 /* 24 * Given a physical address and a length, return a virtual address 25 * that can be used to access the memory range with the caching 26 * properties specified by "flags". 27 */ 28 #define MAP_NOCACHE (0) 29 #define MAP_WRCOMBINE (0) 30 #define MAP_WRBACK (0) 31 #define MAP_WRTHROUGH (0) 32 33 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags); 34 35 /* 36 * Take down a mapping set up by map_physmem(). 37 */ 38 static inline void unmap_physmem(void *vaddr, unsigned long flags) 39 { 40 41 } 42 43 /* For sandbox, we want addresses to point into our RAM buffer */ 44 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len) 45 { 46 return map_physmem(paddr, len, MAP_WRBACK); 47 } 48 49 static inline void unmap_sysmem(const void *vaddr) 50 { 51 } 52