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#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 */
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