diff options
Diffstat (limited to 'arch/arm/mach-versatile/include/mach/memory.h')
-rw-r--r-- | arch/arm/mach-versatile/include/mach/memory.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-versatile/include/mach/memory.h b/arch/arm/mach-versatile/include/mach/memory.h new file mode 100644 index 00000000000..b6315c0602a --- /dev/null +++ b/arch/arm/mach-versatile/include/mach/memory.h | |||
@@ -0,0 +1,38 @@ | |||
1 | /* | ||
2 | * arch/arm/mach-versatile/include/mach/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 | */ | ||
26 | #define PHYS_OFFSET UL(0x00000000) | ||
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 | ||