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 22struct lmb_property { 23 unsigned long base; 24 unsigned long size; 25}; 26 27struct lmb_region { 28 unsigned long cnt; 29 unsigned long size; 30 struct lmb_property region[MAX_LMB_REGIONS+1]; 31}; 32 33struct lmb { 34 unsigned long debug; 35 unsigned long rmo_size; 36 struct lmb_region memory; 37 struct lmb_region reserved; 38}; 39 40extern struct lmb lmb; 41 42extern void __init lmb_init(void); 43extern void __init lmb_analyze(void); 44extern long __init lmb_add(unsigned long base, unsigned long size); 45extern long __init lmb_reserve(unsigned long base, unsigned long size); 46extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align); 47extern unsigned long __init lmb_alloc_base(unsigned long size, 48 unsigned long align, unsigned long max_addr); 49extern unsigned long __init __lmb_alloc_base(unsigned long size, 50 unsigned long align, unsigned long max_addr); 51extern unsigned long __init lmb_phys_mem_size(void); 52extern unsigned long __init lmb_end_of_DRAM(void); 53extern void __init lmb_enforce_memory_limit(unsigned long memory_limit); 54 55extern void lmb_dump_all(void); 56 57static inline unsigned long 58lmb_size_bytes(struct lmb_region *type, unsigned long region_nr) 59{ 60 return type->region[region_nr].size; 61} 62static inline unsigned long 63lmb_size_pages(struct lmb_region *type, unsigned long region_nr) 64{ 65 return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT; 66} 67static inline unsigned long 68lmb_start_pfn(struct lmb_region *type, unsigned long region_nr) 69{ 70 return type->region[region_nr].base >> PAGE_SHIFT; 71} 72static inline unsigned long 73lmb_end_pfn(struct lmb_region *type, unsigned long region_nr) 74{ 75 return lmb_start_pfn(type, region_nr) + 76 lmb_size_pages(type, region_nr); 77} 78 79#endif /* __KERNEL__ */ 80#endif /* _PPC64_LMB_H */ 81