c5df7f7751
Add a flag to let a platform ioremap memory regions marked as reserved. This flag will be used later by the Nintendo Wii support code to allow ioremapping the I/O region sitting between MEM1 and MEM2 and marked as reserved RAM in the patch "wii: use both mem1 and mem2 as ram". This will no longer be needed when proper discontig memory support for 32-bit PowerPC is added to the kernel. Signed-off-by: Albert Herranz <albert_herranz@yahoo.es> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
89 lines
2.2 KiB
C
89 lines
2.2 KiB
C
#ifndef _LINUX_LMB_H
|
|
#define _LINUX_LMB_H
|
|
#ifdef __KERNEL__
|
|
|
|
/*
|
|
* Logical memory blocks.
|
|
*
|
|
* 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 <linux/mm.h>
|
|
|
|
#define MAX_LMB_REGIONS 128
|
|
|
|
struct lmb_property {
|
|
u64 base;
|
|
u64 size;
|
|
};
|
|
|
|
struct lmb_region {
|
|
unsigned long cnt;
|
|
u64 size;
|
|
struct lmb_property region[MAX_LMB_REGIONS+1];
|
|
};
|
|
|
|
struct lmb {
|
|
unsigned long debug;
|
|
u64 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 lmb_add(u64 base, u64 size);
|
|
extern long lmb_remove(u64 base, u64 size);
|
|
extern long __init lmb_reserve(u64 base, u64 size);
|
|
extern u64 __init lmb_alloc_nid(u64 size, u64 align, int nid,
|
|
u64 (*nid_range)(u64, u64, int *));
|
|
extern u64 __init lmb_alloc(u64 size, u64 align);
|
|
extern u64 __init lmb_alloc_base(u64 size,
|
|
u64, u64 max_addr);
|
|
extern u64 __init __lmb_alloc_base(u64 size,
|
|
u64 align, u64 max_addr);
|
|
extern u64 __init lmb_phys_mem_size(void);
|
|
extern u64 lmb_end_of_DRAM(void);
|
|
extern void __init lmb_enforce_memory_limit(u64 memory_limit);
|
|
extern int __init lmb_is_reserved(u64 addr);
|
|
extern int lmb_is_region_reserved(u64 base, u64 size);
|
|
extern int lmb_find(struct lmb_property *res);
|
|
|
|
extern void lmb_dump_all(void);
|
|
|
|
static inline u64
|
|
lmb_size_bytes(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return type->region[region_nr].size;
|
|
}
|
|
static inline u64
|
|
lmb_size_pages(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return lmb_size_bytes(type, region_nr) >> PAGE_SHIFT;
|
|
}
|
|
static inline u64
|
|
lmb_start_pfn(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return type->region[region_nr].base >> PAGE_SHIFT;
|
|
}
|
|
static inline u64
|
|
lmb_end_pfn(struct lmb_region *type, unsigned long region_nr)
|
|
{
|
|
return lmb_start_pfn(type, region_nr) +
|
|
lmb_size_pages(type, region_nr);
|
|
}
|
|
|
|
#include <asm/lmb.h>
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
#endif /* _LINUX_LMB_H */
|