2 * Copyright (c) 2011 The Chromium OS Authors.
4 * See file CREDITS for list of people who contributed to this
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.
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.
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,
23 #ifndef __SANDBOX_ASM_IO_H
24 #define __SANDBOX_ASM_IO_H
27 * Given a physical address and a length, return a virtual address
28 * that can be used to access the memory range with the caching
29 * properties specified by "flags".
31 #define MAP_NOCACHE (0)
32 #define MAP_WRCOMBINE (0)
33 #define MAP_WRBACK (0)
34 #define MAP_WRTHROUGH (0)
36 void *map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags);
39 * Take down a mapping set up by map_physmem().
41 static inline void unmap_physmem(void *vaddr, unsigned long flags)
46 /* For sandbox, we want addresses to point into our RAM buffer */
47 static inline void *map_sysmem(phys_addr_t paddr, unsigned long len)
49 return map_physmem(paddr, len, MAP_WRBACK);
52 static inline void unmap_sysmem(const void *vaddr)
56 /* Map from a pointer to our RAM buffer */
57 phys_addr_t map_to_sysmem(void *ptr);