]>
Commit | Line | Data |
---|---|---|
8ad68bbf CM |
1 | /* |
2 | * linux/include/asm-arm/arch-realview/memory.h | |
3 | * | |
4 | * Copyright (C) 2003 ARM Limited | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | */ | |
20 | #ifndef __ASM_ARCH_MEMORY_H | |
21 | #define __ASM_ARCH_MEMORY_H | |
22 | ||
23 | /* | |
24 | * Physical DRAM offset. | |
25 | */ | |
9dc2d0f5 | 26 | #define PHYS_OFFSET UL(0x00000000) |
8ad68bbf CM |
27 | |
28 | /* | |
29 | * Virtual view <-> DMA view memory address translations | |
30 | * virt_to_bus: Used to translate the virtual address to an | |
31 | * address suitable to be passed to set_dma_addr | |
32 | * bus_to_virt: Used to convert an address for DMA operations | |
33 | * to an address that the kernel can use. | |
34 | */ | |
35 | #define __virt_to_bus(x) ((x) - PAGE_OFFSET) | |
36 | #define __bus_to_virt(x) ((x) + PAGE_OFFSET) | |
37 | ||
38 | #endif |