| Paul Mackerras | 9b6b563 | 2005-10-06 12:06:20 +1000 | [diff] [blame] | 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 */ |