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 | ||
