mirror of https://gitee.com/openkylin/linux.git
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
#ifndef _ASM_POWERPC_LMB_H
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#define _ASM_POWERPC_LMB_H
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#ifdef __KERNEL__
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/*
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* Definitions for talking to the Open Firmware PROM on
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* Power Macintosh computers.
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*
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* Copyright (C) 2001 Peter Bergner, IBM Corp.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/init.h>
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#include <asm/prom.h>
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#define MAX_LMB_REGIONS 128
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struct lmb_property {
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unsigned long base;
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unsigned long size;
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};
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struct lmb_region {
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unsigned long cnt;
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unsigned long size;
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struct lmb_property region[MAX_LMB_REGIONS+1];
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};
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struct lmb {
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unsigned long debug;
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unsigned long rmo_size;
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struct lmb_region memory;
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struct lmb_region reserved;
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};
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extern struct lmb lmb;
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extern void __init lmb_init(void);
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extern void __init lmb_analyze(void);
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extern long __init lmb_add(unsigned long base, unsigned long size);
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extern long __init lmb_reserve(unsigned long base, unsigned long size);
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extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align);
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extern unsigned long __init lmb_alloc_base(unsigned long size,
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unsigned long align, unsigned long max_addr);
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extern unsigned long __init __lmb_alloc_base(unsigned long size,
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unsigned long align, unsigned long max_addr);
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extern unsigned long __init lmb_phys_mem_size(void);
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extern unsigned long __init lmb_end_of_DRAM(void);
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extern void __init lmb_enforce_memory_limit(unsigned long memory_limit);
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extern int __init lmb_is_reserved(unsigned long addr);
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extern void lmb_dump_all(void);
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static inline unsigned long
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lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
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{
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return type->region[region_nr].size;
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}
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static inline unsigned long
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lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
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{
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return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
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}
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static inline unsigned long
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lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
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{
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return type->region[region_nr].base >> PAGE_SHIFT;
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}
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static inline unsigned long
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lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
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{
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return lmb_start_pfn(type, region_nr) +
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lmb_size_pages(type, region_nr);
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}
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#endif /* __KERNEL__ */
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#endif /* _ASM_POWERPC_LMB_H */
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