/* include/asm-arm/arch-lh7a40x/memory.h * *  Copyright (C) 2004 Coastal Environmental Systems * *  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. * * *  Refer to <file:Documentation/arm/Sharp-LH/SDRAM> for more information. * */#ifndef __ASM_ARCH_MEMORY_H#define __ASM_ARCH_MEMORY_H/* * Physical DRAM offset. */#define PHYS_OFFSET	UL(0xc0000000)/* * 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(x)	 __virt_to_phys(x)#define __bus_to_virt(x)	 __phys_to_virt(x)#ifdef CONFIG_DISCONTIGMEM#define NODES_SHIFT	4	/* Up to 16 nodes *//* * Given a kernel address, find the home node of the underlying memory. */# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE#  define KVADDR_TO_NID(addr) \  (  ((((unsigned long) (addr) - PAGE_OFFSET) >> 24) &  1)\   | ((((unsigned long) (addr) - PAGE_OFFSET) >> 25) & ~1))# else  /* 2 banks per node */#  define KVADDR_TO_NID(addr) \      (((unsigned long) (addr) - PAGE_OFFSET) >> 26)# endif/* * Given a page frame number, convert it to a node id. */# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE#  define PFN_TO_NID(pfn) \  (((((pfn) - PHYS_PFN_OFFSET) >> (24 - PAGE_SHIFT)) &  1)\ | ((((pfn) - PHYS_PFN_OFFSET) >> (25 - PAGE_SHIFT)) & ~1))# else  /* 2 banks per node */#  define PFN_TO_NID(pfn) \    (((pfn) - PHYS_PFN_OFFSET) >> (26 - PAGE_SHIFT))#endif/* * 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. */# ifdef CONFIG_LH7A40X_ONE_BANK_PER_NODE#  define LOCAL_MAP_NR(addr) \       (((unsigned long)(addr) & 0x003fffff) >> PAGE_SHIFT)# else  /* 2 banks per node */#  define LOCAL_MAP_NR(addr) \       (((unsigned long)(addr) & 0x01ffffff) >> PAGE_SHIFT)# endif#endif#endif