lmb.h
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上传日期:2013-04-10
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文件大小:3k
- #ifndef _PPC64_LMB_H
- #define _PPC64_LMB_H
- /*
- * Definitions for talking to the Open Firmware PROM on
- * Power Macintosh computers.
- *
- * Copyright (C) 2001 Peter Bergner, IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- */
- #include <asm/prom.h>
- extern unsigned long reloc_offset(void);
- #define MAX_LMB_REGIONS 64
- union lmb_reg_property {
- struct reg_property32 addr32[MAX_LMB_REGIONS];
- struct reg_property64 addr64[MAX_LMB_REGIONS];
- };
- #define LMB_MEMORY_AREA 1
- #define LMB_IO_AREA 2
- #define LMB_ALLOC_ANYWHERE 0
- #define LMB_ALLOC_FIRST4GBYTE (1UL<<32)
- struct lmb_property {
- unsigned long base;
- unsigned long physbase;
- unsigned long size;
- unsigned long type;
- };
- struct lmb_region {
- unsigned long cnt;
- unsigned long size;
- unsigned long iosize;
- unsigned long lcd_size; /* Least Common Denominator */
- struct lmb_property region[MAX_LMB_REGIONS+1];
- };
- struct lmb {
- unsigned long debug;
- unsigned long rmo_size;
- struct lmb_region memory;
- struct lmb_region reserved;
- };
- extern struct lmb lmb;
- extern void lmb_init(void);
- extern void lmb_analyze(void);
- extern long lmb_add(unsigned long, unsigned long);
- #ifdef CONFIG_MSCHUNKS
- extern long lmb_add_io(unsigned long base, unsigned long size);
- #endif /* CONFIG_MSCHUNKS */
- extern long lmb_reserve(unsigned long, unsigned long);
- extern unsigned long lmb_alloc(unsigned long, unsigned long);
- extern unsigned long lmb_alloc_base(unsigned long, unsigned long, unsigned long);
- extern unsigned long lmb_phys_mem_size(void);
- extern unsigned long lmb_end_of_DRAM(void);
- extern unsigned long lmb_abs_to_phys(unsigned long);
- extern void lmb_dump(char *);
- static inline unsigned long
- lmb_addrs_overlap(unsigned long base1, unsigned long size1,
- unsigned long base2, unsigned long size2)
- {
- return ((base1 < (base2+size2)) && (base2 < (base1+size1)));
- }
- static inline long
- lmb_regions_overlap(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
- {
- unsigned long base1 = rgn->region[r1].base;
- unsigned long size1 = rgn->region[r1].size;
- unsigned long base2 = rgn->region[r2].base;
- unsigned long size2 = rgn->region[r2].size;
- return lmb_addrs_overlap(base1,size1,base2,size2);
- }
- static inline long
- lmb_addrs_adjacent(unsigned long base1, unsigned long size1,
- unsigned long base2, unsigned long size2)
- {
- if ( base2 == base1 + size1 ) {
- return 1;
- } else if ( base1 == base2 + size2 ) {
- return -1;
- }
- return 0;
- }
- static inline long
- lmb_regions_adjacent(struct lmb_region *rgn, unsigned long r1, unsigned long r2)
- {
- unsigned long base1 = rgn->region[r1].base;
- unsigned long size1 = rgn->region[r1].size;
- unsigned long type1 = rgn->region[r1].type;
- unsigned long base2 = rgn->region[r2].base;
- unsigned long size2 = rgn->region[r2].size;
- unsigned long type2 = rgn->region[r2].type;
- return (type1 == type2) && lmb_addrs_adjacent(base1,size1,base2,size2);
- }
- #endif /* _PPC64_LMB_H */