d7a5b2ffa1
Currently most callers of lmb_alloc() don't check if it worked or not, if it ever does weird bad things will probably happen. The few callers who do check just panic or BUG_ON. So make lmb_alloc() panic internally, to catch bugs at the source. The few callers who did check the result no longer need to. The only caller that did anything interesting with the return result was careful_allocation(). For it we create __lmb_alloc_base() which _doesn't_ panic automatically, a little messy, but passable. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
#ifndef _PPC64_LMB_H
|
|
#define _PPC64_LMB_H
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* 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/init.h>
|
|
#include <asm/prom.h>
|
|
|
|
#define MAX_LMB_REGIONS 128
|
|
|
|
#define LMB_ALLOC_ANYWHERE 0
|
|
|
|
struct lmb_property {
|
|
unsigned long base;
|
|
unsigned long size;
|
|
};
|
|
|
|
struct lmb_region {
|
|
unsigned long cnt;
|
|
unsigned long size;
|
|
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 __init lmb_init(void);
|
|
extern void __init lmb_analyze(void);
|
|
extern long __init lmb_add(unsigned long, unsigned long);
|
|
extern long __init lmb_reserve(unsigned long, unsigned long);
|
|
extern unsigned long __init lmb_alloc(unsigned long, unsigned long);
|
|
extern unsigned long __init lmb_alloc_base(unsigned long, unsigned long,
|
|
unsigned long);
|
|
extern unsigned long __init __lmb_alloc_base(unsigned long, unsigned long,
|
|
unsigned long);
|
|
extern unsigned long __init lmb_phys_mem_size(void);
|
|
extern unsigned long __init lmb_end_of_DRAM(void);
|
|
extern unsigned long __init lmb_abs_to_phys(unsigned long);
|
|
extern void __init lmb_enforce_memory_limit(unsigned long);
|
|
|
|
extern void lmb_dump_all(void);
|
|
|
|
extern unsigned long io_hole_start;
|
|
|
|
static inline unsigned long
|
|
lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return type->region[region_nr].size;
|
|
}
|
|
static inline unsigned long
|
|
lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
|
|
}
|
|
static inline unsigned long
|
|
lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return type->region[region_nr].base >> PAGE_SHIFT;
|
|
}
|
|
static inline unsigned long
|
|
lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return lmb_start_pfn(type, region_nr) +
|
|
lmb_size_pages(type, region_nr);
|
|
}
|
|
|
|
#endif /* __KERNEL__ */
|
|
#endif /* _PPC64_LMB_H */
|