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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [include/] [asm-arm/] [arch-nexuspci/] [memory.h] - Rev 1765
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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