memory.h
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上传日期:2009-04-28
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- /*
- * linux/include/asm-arm/arch-aaec2000/memory.h
- *
- * Copyright (c) 2005 Nicolas Bellido Y Ortega
- *
- * 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
- #include <linux/config.h>
- #define PHYS_OFFSET (0xf0000000UL)
- #define __virt_to_bus(x) __virt_to_phys(x)
- #define __bus_to_virt(x) __phys_to_virt(x)
- #ifdef CONFIG_DISCONTIGMEM
- /*
- * The nodes are the followings:
- *
- * node 0: 0xf000.0000 - 0xf3ff.ffff
- * node 1: 0xf400.0000 - 0xf7ff.ffff
- * node 2: 0xf800.0000 - 0xfbff.ffff
- * node 3: 0xfc00.0000 - 0xffff.ffff
- */
- /*
- * Given a kernel address, find the home node of the underlying memory.
- */
- #define KVADDR_TO_NID(addr)
- (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
- /*
- * Given a page frame number, convert it to a node id.
- */
- #define PFN_TO_NID(pfn)
- (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
- /*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and return the mem_map of that node.
- */
- #define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
- /*
- * Given a page frame number, find the owning node of the memory
- * and return the mem_map of that node.
- */
- #define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn))
- /*
- * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
- * and returns the index corresponding to the appropriate page in the
- * node's mem_map.
- */
- #define LOCAL_MAP_NR(addr)
- (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
- #define NODE_MAX_MEM_SHIFT 26
- #define NODE_MAX_MEM_SIZE (1 << NODE_MAX_MEM_SHIFT)
- #endif /* CONFIG_DISCONTIGMEM */
- #endif /* __ASM_ARCH_MEMORY_H */