linux-stable/include/asm-x86_64/e820.h
Mel Gorman 5cb248abf5 [PATCH] Have x86_64 use add_active_range() and free_area_init_nodes
Size zones and holes in an architecture independent manner for x86_64.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Cc: Dave Hansen <haveblue@us.ibm.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Cc: Andi Kleen <ak@muc.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "Keith Mannthey" <kmannth@gmail.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Yasunori Goto <y-goto@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-27 08:26:11 -07:00

61 lines
1.8 KiB
C

/*
* structures and definitions for the int 15, ax=e820 memory map
* scheme.
*
* In a nutshell, setup.S populates a scratch table in the
* empty_zero_block that contains a list of usable address/size
* duples. setup.c, this information is transferred into the e820map,
* and in init.c/numa.c, that new information is used to mark pages
* reserved or not.
*/
#ifndef __E820_HEADER
#define __E820_HEADER
#include <linux/mmzone.h>
#define E820MAP 0x2d0 /* our map */
#define E820MAX 128 /* number of entries in E820MAP */
#define E820NR 0x1e8 /* # entries in E820MAP */
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#ifndef __ASSEMBLY__
struct e820entry {
u64 addr; /* start of memory segment */
u64 size; /* size of memory segment */
u32 type; /* type of memory segment */
} __attribute__((packed));
struct e820map {
int nr_map;
struct e820entry map[E820MAX];
};
extern unsigned long find_e820_area(unsigned long start, unsigned long end,
unsigned size);
extern void add_memory_region(unsigned long start, unsigned long size,
int type);
extern void setup_memory_region(void);
extern void contig_e820_setup(void);
extern unsigned long e820_end_of_ram(void);
extern void e820_reserve_resources(void);
extern void e820_mark_nosave_regions(void);
extern void e820_print_map(char *who);
extern int e820_any_mapped(unsigned long start, unsigned long end, unsigned type);
extern int e820_all_mapped(unsigned long start, unsigned long end, unsigned type);
extern void e820_setup_gap(void);
extern void e820_register_active_regions(int nid,
unsigned long start_pfn, unsigned long end_pfn);
extern void finish_e820_parsing(void);
extern struct e820map e820;
extern unsigned ebda_addr, ebda_size;
#endif/*!__ASSEMBLY__*/
#endif/*__E820_HEADER*/