2 * linux/include/asm-arm/arch-ixp2000/memory.h
4 * Copyright (c) 2002 Intel Corp.
5 * Copyright (c) 2003-2004 MontaVista Software, Inc.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #ifndef __ASM_ARCH_MEMORY_H
14 #define __ASM_ARCH_MEMORY_H
16 #define PHYS_OFFSET UL(0x00000000)
19 * Virtual view <-> DMA view memory address translations
20 * virt_to_bus: Used to translate the virtual address to an
21 * address suitable to be passed to set_dma_addr
22 * bus_to_virt: Used to convert an address for DMA operations
23 * to an address that the kernel can use.
25 #include <asm/arch/ixp2000-regs.h>
27 #define __virt_to_bus(v) \
28 (((__virt_to_phys(v) - 0x0) + (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)))
30 #define __bus_to_virt(b) \
31 __phys_to_virt((((b - (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)) + 0x0)))