| #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 <linux/config.h> |
| #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 */ |