/* * linux/include/asm-arm/arch-arc/memory.h * * Copyright (C) 1996-1999 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: * 22-Nov-1996 RMK Created * 21-Mar-1999 RMK Renamed to memory.h * RMK Moved PAGE_OFFSET and TASK_SIZE here */ #ifndef __ASM_ARCH_MEMORY_H #define __ASM_ARCH_MEMORY_H /* * User space: 26MB */ #define TASK_SIZE (0x01a00000UL) #define TASK_SIZE_26 (0x01a00000UL) /* * 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: 32MB */ #define PAGE_OFFSET (0x02000000UL) #define PHYS_OFFSET (0x02000000UL) #define __virt_to_phys__is_a_macro #define __virt_to_phys(vpage) vpage #define __phys_to_virt__is_a_macro #define __phys_to_virt(ppage) ppage /* * 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. */ #define __virt_to_bus__is_a_macro #define __virt_to_bus(x) (x) #define __bus_to_virt__is_a_macro #define __bus_to_virt(x) (x) #endif