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/*

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

 *

 *  Copyright (C) 1996,1997,1998 Russell King.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 *

 *  Changelog:

 *   20-Oct-1996 RMK    Created

 *   31-Dec-1997 RMK    Fixed definitions to reduce warnings

 *   11-Jan-1998 RMK    Uninlined to reduce hits on cache

 *   08-Feb-1998 RMK    Added __virt_to_bus and __bus_to_virt

 *   21-Mar-1999 RMK    Renamed to memory.h

 *               RMK    Added TASK_SIZE and PAGE_OFFSET

 */

#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     (0x10000000UL)

#define __virt_to_phys__is_a_macro

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

#define __phys_to_virt__is_a_macro

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

/*

 * These are exactly the same on the RiscPC as the

 * physical memory view.

 */

#define __virt_to_bus__is_a_macro

#define __virt_to_bus(x) __virt_to_phys(x)

#define __bus_to_virt__is_a_macro

#define __bus_to_virt(x) __phys_to_virt(x)

#endif