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/*
* arch/arm/mach-ks8695/include/mach/memory.h
*
* Copyright (C) 2006 Andrew Victor
*
* KS8695 Memory definitions
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
#include <mach/hardware.h>
/*
* Physical SRAM offset.
*/
#define PLAT_PHYS_OFFSET KS8695_SDRAM_PA
#ifndef __ASSEMBLY__
#ifdef CONFIG_PCI
/* PCI mappings */
#define __virt_to_bus(x) ((x) - PAGE_OFFSET + KS8695_PCIMEM_PA)
#define __bus_to_virt(x) ((x) - KS8695_PCIMEM_PA + PAGE_OFFSET)
/* Platform-bus mapping */
extern struct bus_type platform_bus_type;
#define is_lbus_device(dev) (dev && dev->bus == &platform_bus_type)
#define __arch_dma_to_virt(dev, x) ({ (void *) (is_lbus_device(dev) ? \
__phys_to_virt(x) : __bus_to_virt(x)); })
#define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \
(dma_addr_t)__virt_to_phys((unsigned long)x) \
: (dma_addr_t)__virt_to_bus(x); })
#define __arch_pfn_to_dma(dev, pfn) \
({ dma_addr_t __dma = __pfn_to_phys(pfn); \
if (!is_lbus_device(dev)) \
__dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \
__dma; })
#define __arch_dma_to_pfn(dev, x) \
({ dma_addr_t __dma = x; \
if (!is_lbus_device(dev)) \
__dma += PHYS_OFFSET - KS8695_PCIMEM_PA; \
__phys_to_pfn(__dma); \
})
#endif
#endif
#endif