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author | David S. Miller <davem@davemloft.net> | 2008-02-13 16:56:49 -0800 |
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committer | David S. Miller <davem@davemloft.net> | 2008-02-13 16:56:49 -0800 |
commit | d9b2b2a277219d4812311d995054ce4f95067725 (patch) | |
tree | 63af21df6686dd2e867015fdf9f0cb798d3ca348 /include/linux/lmb.h | |
parent | e760e716d47b48caf98da348368fd41b4a9b9e7e (diff) | |
download | linux-stable-d9b2b2a277219d4812311d995054ce4f95067725.tar.gz linux-stable-d9b2b2a277219d4812311d995054ce4f95067725.tar.bz2 linux-stable-d9b2b2a277219d4812311d995054ce4f95067725.zip |
[LIB]: Make PowerPC LMB code generic so sparc64 can use it too.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/lmb.h')
-rw-r--r-- | include/linux/lmb.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/include/linux/lmb.h b/include/linux/lmb.h new file mode 100644 index 000000000000..8b93f63407e9 --- /dev/null +++ b/include/linux/lmb.h @@ -0,0 +1,83 @@ +#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 { + 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 base, unsigned long size); +extern long __init lmb_reserve(unsigned long base, unsigned long size); +extern unsigned long __init lmb_alloc(unsigned long size, unsigned long align); +extern unsigned long __init lmb_alloc_base(unsigned long size, + unsigned long align, unsigned long max_addr); +extern unsigned long __init __lmb_alloc_base(unsigned long size, + unsigned long align, unsigned long max_addr); +extern unsigned long __init lmb_phys_mem_size(void); +extern unsigned long __init lmb_end_of_DRAM(void); +extern void __init lmb_enforce_memory_limit(unsigned long memory_limit); +extern int __init lmb_is_reserved(unsigned long addr); + +extern void lmb_dump_all(void); + +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); +} + +#include <asm/lmb.h> + +#endif /* __KERNEL__ */ + +#endif /* _LINUX_LMB_H */ |