1 #ifndef _LINUX_MEMBLOCK_H 2 #define _LINUX_MEMBLOCK_H 3 #ifdef __KERNEL__ 4 5 /* 6 * Logical memory blocks. 7 * 8 * Copyright (C) 2001 Peter Bergner, IBM Corp. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License 12 * as published by the Free Software Foundation; either version 13 * 2 of the License, or (at your option) any later version. 14 */ 15 16 #include <linux/init.h> 17 #include <linux/mm.h> 18 19 #define MAX_MEMBLOCK_REGIONS 128 20 21 struct memblock_property { 22 u64 base; 23 u64 size; 24 }; 25 26 struct memblock_region { 27 unsigned long cnt; 28 u64 size; 29 struct memblock_property region[MAX_MEMBLOCK_REGIONS+1]; 30 }; 31 32 struct memblock { 33 unsigned long debug; 34 u64 rmo_size; 35 struct memblock_region memory; 36 struct memblock_region reserved; 37 }; 38 39 extern struct memblock memblock; 40 41 extern void __init memblock_init(void); 42 extern void __init memblock_analyze(void); 43 extern long memblock_add(u64 base, u64 size); 44 extern long memblock_remove(u64 base, u64 size); 45 extern long __init memblock_free(u64 base, u64 size); 46 extern long __init memblock_reserve(u64 base, u64 size); 47 extern u64 __init memblock_alloc_nid(u64 size, u64 align, int nid, 48 u64 (*nid_range)(u64, u64, int *)); 49 extern u64 __init memblock_alloc(u64 size, u64 align); 50 extern u64 __init memblock_alloc_base(u64 size, 51 u64, u64 max_addr); 52 extern u64 __init __memblock_alloc_base(u64 size, 53 u64 align, u64 max_addr); 54 extern u64 __init memblock_phys_mem_size(void); 55 extern u64 memblock_end_of_DRAM(void); 56 extern void __init memblock_enforce_memory_limit(u64 memory_limit); 57 extern int __init memblock_is_reserved(u64 addr); 58 extern int memblock_is_region_reserved(u64 base, u64 size); 59 extern int memblock_find(struct memblock_property *res); 60 61 extern void memblock_dump_all(void); 62 63 static inline u64 64 memblock_size_bytes(struct memblock_region *type, unsigned long region_nr) 65 { 66 return type->region[region_nr].size; 67 } 68 static inline u64 69 memblock_size_pages(struct memblock_region *type, unsigned long region_nr) 70 { 71 return memblock_size_bytes(type, region_nr) >> PAGE_SHIFT; 72 } 73 static inline u64 74 memblock_start_pfn(struct memblock_region *type, unsigned long region_nr) 75 { 76 return type->region[region_nr].base >> PAGE_SHIFT; 77 } 78 static inline u64 79 memblock_end_pfn(struct memblock_region *type, unsigned long region_nr) 80 { 81 return memblock_start_pfn(type, region_nr) + 82 memblock_size_pages(type, region_nr); 83 } 84 85 #include <asm/memblock.h> 86 87 #endif /* __KERNEL__ */ 88 89 #endif /* _LINUX_MEMBLOCK_H */ 90