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1 #ifndef _LINUX_LMB_H |
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2 #define _LINUX_LMB_H |
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3 #ifdef __KERNEL__ |
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4 |
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5 /* |
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6 * Logical memory blocks. |
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7 * |
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8 * Copyright (C) 2001 Peter Bergner, IBM Corp. |
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9 * |
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10 * This program is free software; you can redistribute it and/or |
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11 * modify it under the terms of the GNU General Public License |
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12 * as published by the Free Software Foundation; either version |
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13 * 2 of the License, or (at your option) any later version. |
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14 */ |
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15 |
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16 #include <linux/init.h> |
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17 #include <linux/mm.h> |
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18 |
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19 #define MAX_LMB_REGIONS 128 |
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20 |
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21 struct lmb_property { |
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22 u64 base; |
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23 u64 size; |
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24 }; |
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25 |
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26 struct lmb_region { |
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27 unsigned long cnt; |
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28 u64 size; |
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29 struct lmb_property region[MAX_LMB_REGIONS+1]; |
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30 }; |
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31 |
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32 struct lmb { |
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33 unsigned long debug; |
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34 u64 rmo_size; |
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35 struct lmb_region memory; |
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36 struct lmb_region reserved; |
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37 }; |
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38 |
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39 extern struct lmb lmb; |
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40 |
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41 extern void __init lmb_init(void); |
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42 extern void __init lmb_analyze(void); |
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43 extern long lmb_add(u64 base, u64 size); |
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44 extern long lmb_remove(u64 base, u64 size); |
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45 extern long __init lmb_reserve(u64 base, u64 size); |
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46 extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid, |
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47 u64 (*nid_range)(u64, u64, int *)); |
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48 extern u64 __init lmb_alloc(u64 size, u64 align); |
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49 extern u64 __init lmb_alloc_base(u64 size, |
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50 u64, u64 max_addr); |
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51 extern u64 __init __lmb_alloc_base(u64 size, |
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52 u64 align, u64 max_addr); |
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53 extern u64 __init lmb_phys_mem_size(void); |
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54 extern u64 __init lmb_end_of_DRAM(void); |
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55 extern void __init lmb_enforce_memory_limit(u64 memory_limit); |
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56 extern int __init lmb_is_reserved(u64 addr); |
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57 extern int lmb_find(struct lmb_property *res); |
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58 |
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59 extern void lmb_dump_all(void); |
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60 |
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61 static inline u64 |
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62 lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) |
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63 { |
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64 return type->region[region_nr].size; |
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65 } |
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66 static inline u64 |
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67 lmb_size_pages(struct lmb_region *type, unsigned long region_nr) |
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68 { |
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69 return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT; |
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70 } |
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71 static inline u64 |
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72 lmb_start_pfn(struct lmb_region *type, unsigned long region_nr) |
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73 { |
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74 return type->region[region_nr].base >> PAGE_SHIFT; |
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75 } |
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76 static inline u64 |
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77 lmb_end_pfn(struct lmb_region *type, unsigned long region_nr) |
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78 { |
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79 return lmb_start_pfn(type, region_nr) + |
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80 lmb_size_pages(type, region_nr); |
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81 } |
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82 |
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83 #include <asm/lmb.h> |
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84 |
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85 #endif /* __KERNEL__ */ |
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86 |
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87 #endif /* _LINUX_LMB_H */ |