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Linux kernel mirror (for testing)
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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
23struct lmb_property {
24 unsigned long base;
25 unsigned long size;
26};
27
28struct lmb_region {
29 unsigned long cnt;
30 unsigned long size;
31 struct lmb_property region[MAX_LMB_REGIONS+1];
32};
33
34struct lmb {
35 unsigned long debug;
36 unsigned long rmo_size;
37 struct lmb_region memory;
38 struct lmb_region reserved;
39};
40
41extern struct lmb lmb;
42
43extern void __init lmb_init(void);
44extern void __init lmb_analyze(void);
45extern long __init lmb_add(unsigned long, unsigned long);
46extern long __init lmb_reserve(unsigned long, unsigned long);
47extern unsigned long __init lmb_alloc(unsigned long, unsigned long);
48extern unsigned long __init lmb_alloc_base(unsigned long, unsigned long,
49 unsigned long);
50extern unsigned long __init lmb_phys_mem_size(void);
51extern unsigned long __init lmb_end_of_DRAM(void);
52extern unsigned long __init lmb_abs_to_phys(unsigned long);
53extern void __init lmb_enforce_memory_limit(unsigned long);
54
55extern void lmb_dump_all(void);
56
57extern unsigned long io_hole_start;
58
59static inline unsigned long
60lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
61{
62 return type->region[region_nr].size;
63}
64static inline unsigned long
65lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
66{
67 return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
68}
69static inline unsigned long
70lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
71{
72 return type->region[region_nr].base >> PAGE_SHIFT;
73}
74static inline unsigned long
75lmb_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 */