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1 | #ifndef _PPC64_LMB_H |
2 | #define _PPC64_LMB_H | |
3 | ||
4 | /* | |
5 | * Definitions for talking to the Open Firmware PROM on | |
6 | * Power Macintosh computers. | |
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 <asm/prom.h> | |
18 | ||
19 | #define MAX_LMB_REGIONS 128 | |
20 | ||
21 | #define LMB_ALLOC_ANYWHERE 0 | |
22 | ||
23 | struct lmb_property { | |
24 | unsigned long base; | |
25 | unsigned long size; | |
26 | }; | |
27 | ||
28 | struct lmb_region { | |
29 | unsigned long cnt; | |
30 | unsigned long size; | |
31 | struct lmb_property region[MAX_LMB_REGIONS+1]; | |
32 | }; | |
33 | ||
34 | struct lmb { | |
35 | unsigned long debug; | |
36 | unsigned long rmo_size; | |
37 | struct lmb_region memory; | |
38 | struct lmb_region reserved; | |
39 | }; | |
40 | ||
41 | extern struct lmb lmb; | |
42 | ||
43 | extern void __init lmb_init(void); | |
44 | extern void __init lmb_analyze(void); | |
45 | extern long __init lmb_add(unsigned long, unsigned long); | |
46 | extern long __init lmb_reserve(unsigned long, unsigned long); | |
47 | extern unsigned long __init lmb_alloc(unsigned long, unsigned long); | |
48 | extern unsigned long __init lmb_alloc_base(unsigned long, unsigned long, | |
49 | unsigned long); | |
50 | extern unsigned long __init lmb_phys_mem_size(void); | |
51 | extern unsigned long __init lmb_end_of_DRAM(void); | |
52 | extern unsigned long __init lmb_abs_to_phys(unsigned long); | |
53 | extern void __init lmb_enforce_memory_limit(unsigned long); | |
54 | ||
55 | extern void lmb_dump_all(void); | |
56 | ||
57 | extern unsigned long io_hole_start; | |
58 | ||
59 | static inline unsigned long | |
60 | lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) | |
61 | { | |
62 | return type->region[region_nr].size; | |
63 | } | |
64 | static inline unsigned long | |
65 | lmb_size_pages(struct lmb_region *type, unsigned long region_nr) | |
66 | { | |
67 | return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT; | |
68 | } | |
69 | static inline unsigned long | |
70 | lmb_start_pfn(struct lmb_region *type, unsigned long region_nr) | |
71 | { | |
72 | return type->region[region_nr].base >> PAGE_SHIFT; | |
73 | } | |
74 | static inline unsigned long | |
75 | lmb_end_pfn(struct lmb_region *type, unsigned long region_nr) | |
76 | { | |
77 | return lmb_start_pfn(type, region_nr) + | |
78 | lmb_size_pages(type, region_nr); | |
79 | } | |
80 | ||
81 | #endif /* _PPC64_LMB_H */ |