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Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/memory.h')
| -rw-r--r-- | arch/arm/mach-ixp2000/include/mach/memory.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/memory.h b/arch/arm/mach-ixp2000/include/mach/memory.h new file mode 100644 index 00000000000..241529a7c52 --- /dev/null +++ b/arch/arm/mach-ixp2000/include/mach/memory.h @@ -0,0 +1,34 @@ +/* + * arch/arm/mach-ixp2000/include/mach/memory.h + * + * Copyright (c) 2002 Intel Corp. + * Copyright (c) 2003-2004 MontaVista Software, Inc. + * + * 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. + */ + +#ifndef __ASM_ARCH_MEMORY_H +#define __ASM_ARCH_MEMORY_H + +#define PHYS_OFFSET UL(0x00000000) + +/* + * 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. + */ +#include <mach/ixp2000-regs.h> + +#define __virt_to_bus(v) \ + (((__virt_to_phys(v) - 0x0) + (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0))) + +#define __bus_to_virt(b) \ + __phys_to_virt((((b - (*IXP2000_PCI_SDRAM_BAR & 0xfffffff0)) + 0x0))) + +#endif + |