memory.h

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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