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1275 |
phoenix |
#ifndef _PPC64_LMB_H
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#define _PPC64_LMB_H
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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/config.h>
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#include <asm/prom.h>
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extern unsigned long reloc_offset(void);
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#define MAX_LMB_REGIONS 64
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union lmb_reg_property {
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struct reg_property32 addr32[MAX_LMB_REGIONS];
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struct reg_property64 addr64[MAX_LMB_REGIONS];
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};
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#define LMB_MEMORY_AREA 1
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#define LMB_IO_AREA 2
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#define LMB_ALLOC_ANYWHERE 0
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#define LMB_ALLOC_FIRST4GBYTE (1UL<<32)
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struct lmb_property {
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unsigned long base;
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unsigned long physbase;
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unsigned long size;
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unsigned long type;
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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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unsigned long iosize;
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unsigned long lcd_size; /* Least Common Denominator */
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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 lmb_init(void);
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extern void lmb_analyze(void);
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extern long lmb_add(unsigned long, unsigned long);
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#ifdef CONFIG_MSCHUNKS
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extern long lmb_add_io(unsigned long base, unsigned long size);
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#endif /* CONFIG_MSCHUNKS */
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extern long lmb_reserve(unsigned long, unsigned long);
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extern unsigned long lmb_alloc(unsigned long, unsigned long);
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extern unsigned long lmb_alloc_base(unsigned long, unsigned long, unsigned long);
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extern unsigned long lmb_phys_mem_size(void);
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extern unsigned long lmb_end_of_DRAM(void);
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extern unsigned long lmb_abs_to_phys(unsigned long);
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extern void lmb_dump(char *);
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static inline unsigned long
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lmb_addrs_overlap(unsigned long base1, unsigned long size1,
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unsigned long base2, unsigned long size2)
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{
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return ((base1 < (base2+size2)) && (base2 < (base1+size1)));
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}
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static inline long
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lmb_regions_overlap(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
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{
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unsigned long base1 = rgn->region[r1].base;
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unsigned long size1 = rgn->region[r1].size;
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unsigned long base2 = rgn->region[r2].base;
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unsigned long size2 = rgn->region[r2].size;
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return lmb_addrs_overlap(base1,size1,base2,size2);
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}
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static inline long
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lmb_addrs_adjacent(unsigned long base1, unsigned long size1,
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unsigned long base2, unsigned long size2)
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{
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if ( base2 == base1 + size1 ) {
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return 1;
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} else if ( base1 == base2 + size2 ) {
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return -1;
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}
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return 0;
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}
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static inline long
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lmb_regions_adjacent(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
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{
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unsigned long base1 = rgn->region[r1].base;
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unsigned long size1 = rgn->region[r1].size;
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unsigned long type1 = rgn->region[r1].type;
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unsigned long base2 = rgn->region[r2].base;
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unsigned long size2 = rgn->region[r2].size;
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unsigned long type2 = rgn->region[r2].type;
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return (type1 == type2) && lmb_addrs_adjacent(base1,size1,base2,size2);
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}
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#endif /* _PPC64_LMB_H */
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