blob: 5ad90127915f63cfc69f2629ebb0772ff4280f55 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * linux/include/asm-arm/arch-imx/memory.h
3 *
4 * Copyright (C) 1999 ARM Limited
5 * Copyright (C) 2002 Shane Nay (shane@minirl.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (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, MA 02111-1307 USA
20 */
21#ifndef __ASM_ARCH_MMU_H
22#define __ASM_ARCH_MMU_H
23
Nicolas Pitref09b9972005-10-29 21:44:55 +010024#define PHYS_OFFSET UL(0x08000000)
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26/*
27 * Virtual view <-> DMA view memory address translations
28 * virt_to_bus: Used to translate the virtual address to an
29 * address suitable to be passed to set_dma_addr
30 * bus_to_virt: Used to convert an address for DMA operations
31 * to an address that the kernel can use.
32 */
Andrew Victor313f53e2006-06-27 22:54:39 +010033#define __virt_to_bus(x) (x - PAGE_OFFSET + PHYS_OFFSET)
34#define __bus_to_virt(x) (x - PHYS_OFFSET + PAGE_OFFSET)
Linus Torvalds1da177e2005-04-16 15:20:36 -070035
36#endif