| memory.h (b65b34895437915f411882dd40d704eb0863ffb0) | memory.h (be370302742ff9948f2a42b15cb2ba174d97b930) |
|---|---|
| 1/* 2 * arch/arm/include/asm/memory.h 3 * 4 * Copyright (C) 2000-2002 Russell King 5 * modification for nommu, Hyok S. Choi, 2004 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as --- 220 unchanged lines hidden (view full) --- 229 * RAM address. 230 * 231 * page_to_pfn(page) convert a struct page * to a PFN number 232 * pfn_to_page(pfn) convert a _valid_ PFN number to struct page * 233 * 234 * virt_to_page(k) convert a _valid_ virtual address to struct page * 235 * virt_addr_valid(k) indicates whether a virtual address is valid 236 */ | 1/* 2 * arch/arm/include/asm/memory.h 3 * 4 * Copyright (C) 2000-2002 Russell King 5 * modification for nommu, Hyok S. Choi, 2004 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as --- 220 unchanged lines hidden (view full) --- 229 * RAM address. 230 * 231 * page_to_pfn(page) convert a struct page * to a PFN number 232 * pfn_to_page(pfn) convert a _valid_ PFN number to struct page * 233 * 234 * virt_to_page(k) convert a _valid_ virtual address to struct page * 235 * virt_addr_valid(k) indicates whether a virtual address is valid 236 */ |
| 237#ifndef CONFIG_DISCONTIGMEM 238 | |
| 239#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET 240 241#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) 242#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) 243 | 237#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET 238 239#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) 240#define virt_addr_valid(kaddr) ((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) 241 |
| 244#define PHYS_TO_NID(addr) (0) 245 246#else /* CONFIG_DISCONTIGMEM */ 247 | |
| 248/* | 242/* |
| 249 * This is more complex. We have a set of mem_map arrays spread 250 * around in memory. 251 */ 252#include <linux/numa.h> 253 254#define arch_pfn_to_nid(pfn) PFN_TO_NID(pfn) 255#define arch_local_page_offset(pfn, nid) LOCAL_MAP_NR((pfn) << PAGE_SHIFT) 256 257#define virt_to_page(kaddr) \ 258 (ADDR_TO_MAPBASE(kaddr) + LOCAL_MAP_NR(kaddr)) 259 260#define virt_addr_valid(kaddr) (KVADDR_TO_NID(kaddr) < MAX_NUMNODES) 261 262/* 263 * Common discontigmem stuff. 264 * PHYS_TO_NID is used by the ARM kernel/setup.c 265 */ 266#define PHYS_TO_NID(addr) PFN_TO_NID((addr) >> PAGE_SHIFT) 267 268/* 269 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory 270 * and returns the mem_map of that node. 271 */ 272#define ADDR_TO_MAPBASE(kaddr) NODE_MEM_MAP(KVADDR_TO_NID(kaddr)) 273 274/* 275 * Given a page frame number, find the owning node of the memory 276 * and returns the mem_map of that node. 277 */ 278#define PFN_TO_MAPBASE(pfn) NODE_MEM_MAP(PFN_TO_NID(pfn)) 279 280#ifdef NODE_MEM_SIZE_BITS 281#define NODE_MEM_SIZE_MASK ((1 << NODE_MEM_SIZE_BITS) - 1) 282 283/* 284 * Given a kernel address, find the home node of the underlying memory. 285 */ 286#define KVADDR_TO_NID(addr) \ 287 (((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MEM_SIZE_BITS) 288 289/* 290 * Given a page frame number, convert it to a node id. 291 */ 292#define PFN_TO_NID(pfn) \ 293 (((pfn) - PHYS_PFN_OFFSET) >> (NODE_MEM_SIZE_BITS - PAGE_SHIFT)) 294 295/* 296 * Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory 297 * and returns the index corresponding to the appropriate page in the 298 * node's mem_map. 299 */ 300#define LOCAL_MAP_NR(addr) \ 301 (((unsigned long)(addr) & NODE_MEM_SIZE_MASK) >> PAGE_SHIFT) 302 303#endif /* NODE_MEM_SIZE_BITS */ 304 305#endif /* !CONFIG_DISCONTIGMEM */ 306 307/* | |
| 308 * Optional coherency support. Currently used only by selected 309 * Intel XSC3-based systems. 310 */ 311#ifndef arch_is_coherent 312#define arch_is_coherent() 0 313#endif 314 315#endif 316 317#include <asm-generic/memory_model.h> 318 319#endif | 243 * Optional coherency support. Currently used only by selected 244 * Intel XSC3-based systems. 245 */ 246#ifndef arch_is_coherent 247#define arch_is_coherent() 0 248#endif 249 250#endif 251 252#include <asm-generic/memory_model.h> 253 254#endif |