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1#ifndef _PPC64_LMB_H
2#define _PPC64_LMB_H
3#ifdef __KERNEL__
4
5/*
6 * Definitions for talking to the Open Firmware PROM on
7 * Power Macintosh computers.
8 *
9 * Copyright (C) 2001 Peter Bergner, IBM Corp.
10 *
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version
14 * 2 of the License, or (at your option) any later version.
15 */
16
17#include <linux/init.h>
18#include <asm/prom.h>
19
20#define MAX_LMB_REGIONS 128
21
22#define LMB_ALLOC_ANYWHERE 0
23
24struct lmb_property {
25 unsigned long base;
26 unsigned long size;
27};
28
29struct lmb_region {
30 unsigned long cnt;
31 unsigned long size;
32 struct lmb_property region[MAX_LMB_REGIONS+1];
33};
34
35struct lmb {
36 unsigned long debug;
37 unsigned long rmo_size;
38 struct lmb_region memory;
39 struct lmb_region reserved;
40};
41
42extern struct lmb lmb;
43
44extern void __init lmb_init(void);
45extern void __init lmb_analyze(void);
46extern long __init lmb_add(unsigned long, unsigned long);
47extern long __init lmb_reserve(unsigned long, unsigned long);
48extern unsigned long __init lmb_alloc(unsigned long, unsigned long);
49extern unsigned long __init lmb_alloc_base(unsigned long, unsigned long,
50 unsigned long);
51extern unsigned long __init lmb_phys_mem_size(void);
52extern unsigned long __init lmb_end_of_DRAM(void);
53extern unsigned long __init lmb_abs_to_phys(unsigned long);
54extern void __init lmb_enforce_memory_limit(unsigned long);
55
56extern void lmb_dump_all(void);
57
58extern unsigned long io_hole_start;
59
60static inline unsigned long
61lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
62{
63 return type->region[region_nr].size;
64}
65static inline unsigned long
66lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
67{
68 return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
69}
70static inline unsigned long
71lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
72{
73 return type->region[region_nr].base >> PAGE_SHIFT;
74}
75static inline unsigned long
76lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
77{
78 return lmb_start_pfn(type, region_nr) +
79 lmb_size_pages(type, region_nr);
80}
81
82#endif /* __KERNEL__ */
83#endif /* _PPC64_LMB_H */