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Diffstat (limited to 'include/asm-arm/arch-imx/memory.h')
| -rw-r--r-- | include/asm-arm/arch-imx/memory.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/asm-arm/arch-imx/memory.h b/include/asm-arm/arch-imx/memory.h new file mode 100644 index 000000000000..116a91fa14f1 --- /dev/null +++ b/include/asm-arm/arch-imx/memory.h @@ -0,0 +1,38 @@ +/* + * linux/include/asm-arm/arch-imx/memory.h + * + * Copyright (C) 1999 ARM Limited + * Copyright (C) 2002 Shane Nay (shane@minirl.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#ifndef __ASM_ARCH_MMU_H +#define __ASM_ARCH_MMU_H + +#define PHYS_OFFSET (0x08000000UL) + +/* + * Virtual view <-> DMA view memory address translations + * virt_to_bus: Used to translate the virtual address to an + * address suitable to be passed to set_dma_addr + * bus_to_virt: Used to convert an address for DMA operations + * to an address that the kernel can use. + */ +#define __virt_to_bus__is_a_macro +#define __virt_to_bus(x) (x - PAGE_OFFSET + PHYS_OFFSET) +#define __bus_to_virt__is_a_macro +#define __bus_to_virt(x) (x - PHYS_OFFSET + PAGE_OFFSET) + +#endif |