| David S. Miller | d9b2b2a | 2008-02-13 16:56:49 -0800 | [diff] [blame^] | 1 | #ifndef _LINUX_LMB_H |
| 2 | #define _LINUX_LMB_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_LMB_REGIONS 128 |
| 20 | |
| 21 | struct lmb_property { |
| 22 | unsigned long base; |
| 23 | unsigned long size; |
| 24 | }; |
| 25 | |
| 26 | struct lmb_region { |
| 27 | unsigned long cnt; |
| 28 | unsigned long size; |
| 29 | struct lmb_property region[MAX_LMB_REGIONS+1]; |
| 30 | }; |
| 31 | |
| 32 | struct lmb { |
| 33 | unsigned long debug; |
| 34 | unsigned long rmo_size; |
| 35 | struct lmb_region memory; |
| 36 | struct lmb_region reserved; |
| 37 | }; |
| 38 | |
| 39 | extern struct lmb lmb; |
| 40 | |
| 41 | extern void __init lmb_init(void); |
| 42 | extern void __init lmb_analyze(void); |
| 43 | extern long __init lmb_add(unsigned long base, unsigned long size); |
| 44 | extern long __init lmb_reserve(unsigned long base, unsigned long size); |
| 45 | extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align); |
| 46 | extern unsigned long __init lmb_alloc_base(unsigned long size, |
| 47 | unsigned long align, unsigned long max_addr); |
| 48 | extern unsigned long __init __lmb_alloc_base(unsigned long size, |
| 49 | unsigned long align, unsigned long max_addr); |
| 50 | extern unsigned long __init lmb_phys_mem_size(void); |
| 51 | extern unsigned long __init lmb_end_of_DRAM(void); |
| 52 | extern void __init lmb_enforce_memory_limit(unsigned long memory_limit); |
| 53 | extern int __init lmb_is_reserved(unsigned long addr); |
| 54 | |
| 55 | extern void lmb_dump_all(void); |
| 56 | |
| 57 | static inline unsigned long |
| 58 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
| 59 | { |
| 60 | return type->region[region_nr].size; |
| 61 | } |
| 62 | static inline unsigned long |
| 63 | lmb_size_pages(struct lmb_region *type, unsigned long region_nr) |
| 64 | { |
| 65 | return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT; |
| 66 | } |
| 67 | static inline unsigned long |
| 68 | lmb_start_pfn(struct lmb_region *type, unsigned long region_nr) |
| 69 | { |
| 70 | return type->region[region_nr].base >> PAGE_SHIFT; |
| 71 | } |
| 72 | static inline unsigned long |
| 73 | lmb_end_pfn(struct lmb_region *type, unsigned long region_nr) |
| 74 | { |
| 75 | return lmb_start_pfn(type, region_nr) + |
| 76 | lmb_size_pages(type, region_nr); |
| 77 | } |
| 78 | |
| 79 | #include <asm/lmb.h> |
| 80 | |
| 81 | #endif /* __KERNEL__ */ |
| 82 | |
| 83 | #endif /* _LINUX_LMB_H */ |