/* * linux/include/asm-arm/arch-pxa/memory.h * * Author: Nicolas Pitre * Copyright: (C) 2001 MontaVista Software Inc. * * 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. */ #ifndef __ASM_ARCH_MEMORY_H #define __ASM_ARCH_MEMORY_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) /* * Physical DRAM offset. */ #define PHYS_OFFSET (0xa0000000UL) #define PHYS_TO_NID(addr) (0) /* * physical vs virtual ram conversion */ #define __virt_to_phys__is_a_macro #define __phys_to_virt__is_a_macro #define __virt_to_phys(x) ((x) - PAGE_OFFSET + PHYS_OFFSET) #define __phys_to_virt(x) ((x) - PHYS_OFFSET + PAGE_OFFSET) /* * 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 __bus_to_virt__is_a_macro #define __virt_to_bus(x) __virt_to_phys(x) #define __bus_to_virt(x) __phys_to_virt(x) #endif