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/*

 * linux/include/asm-arm/arch-nexuspci/memory.h

 *

 * Copyright (c) 1997, 1998, 2000 FutureTV Labs Ltd.

 * Copyright (c) 1999 Russell King

 *

 */

#ifndef __ASM_ARCH_MMU_H

#define __ASM_ARCH_MMU_H

/*

 * Task size: 3GB

 */

#define TASK_SIZE       (0xc0000000UL)

#define TASK_SIZE_26    (0x04000000UL)

/*

 * This decides where the kernel will search for a free chunk of vm

 * space during mmap's.

 */

#define TASK_UNMAPPED_BASE (TASK_SIZE / 3)

/*

 * Page offset: 3GB

 */

#define PAGE_OFFSET     (0xc0000000UL)

#define PHYS_OFFSET     (0x40000000UL)

#define BUS_OFFSET      (0xe0000000UL)

/*

 * DRAM is contiguous

 */

#define __virt_to_phys(vpage) ((unsigned long)(vpage) - PAGE_OFFSET + PHYS_OFFSET)

#define __phys_to_virt(ppage) ((unsigned long)(ppage) + PAGE_OFFSET - PHYS_OFFSET)

#define __virt_to_phys__is_a_macro

#define __phys_to_virt__is_a_macro

/*

 * On the PCI bus the DRAM appears at address 0xe0000000

 */

#define __virt_to_bus__is_a_macro

#define __virt_to_bus(x) ((unsigned long)(x) - PAGE_OFFSET + BUS_OFFSET)

#define __bus_to_virt__is_a_macro

#define __bus_to_virt(x) ((unsigned long)(x) + PAGE_OFFSET - BUS_OFFSET)

#endif