1#ifndef _ASM_X86_E820_H
 2#define _ASM_X86_E820_H
 3
 4/*
 5 * E820_X_MAX is the maximum size of the extended E820 table.  The extended
 6 * table may contain up to 3 extra E820 entries per possible NUMA node, so we
 7 * make room for 3 * MAX_NUMNODES possible entries, beyond the standard 128.
 8 * Also note that E820_X_MAX *must* be defined before we include uapi/asm/e820.h.
 9 */
10#include <linux/numa.h>
11#define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES)
12
13#include <uapi/asm/e820.h>
14
15#ifndef __ASSEMBLY__
16/* see comment in arch/x86/kernel/e820.c */
17extern struct e820map *e820;
18extern struct e820map *e820_saved;
19
20extern unsigned long pci_mem_start;
21extern int e820_any_mapped(u64 start, u64 end, unsigned type);
22extern int e820_all_mapped(u64 start, u64 end, unsigned type);
23extern void e820_add_region(u64 start, u64 size, int type);
24extern void e820_print_map(char *who);
25extern int
26sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, u32 *pnr_map);
27extern u64 e820_update_range(u64 start, u64 size, unsigned old_type,
28			       unsigned new_type);
29extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type,
30			     int checktype);
31extern void update_e820(void);
32extern void e820_setup_gap(void);
33extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize,
34			unsigned long start_addr, unsigned long long end_addr);
35struct setup_data;
36extern void parse_e820_ext(u64 phys_addr, u32 data_len);
37
38#if defined(CONFIG_X86_64) || \
39	(defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION))
40extern void e820_mark_nosave_regions(unsigned long limit_pfn);
41#else
42static inline void e820_mark_nosave_regions(unsigned long limit_pfn)
43{
44}
45#endif
46
47extern unsigned long e820_end_of_ram_pfn(void);
48extern unsigned long e820_end_of_low_ram_pfn(void);
49extern u64 early_reserve_e820(u64 sizet, u64 align);
50
51void memblock_x86_fill(void);
52void memblock_find_dma_reserve(void);
53
54extern void finish_e820_parsing(void);
55extern void e820_reserve_resources(void);
56extern void e820_reserve_resources_late(void);
57extern void setup_memory_map(void);
58extern char *default_machine_specific_memory_setup(void);
59
60extern void e820_reallocate_tables(void);
61
62/*
63 * Returns true iff the specified range [s,e) is completely contained inside
64 * the ISA region.
65 */
66static inline bool is_ISA_range(u64 s, u64 e)
67{
68	return s >= ISA_START_ADDRESS && e <= ISA_END_ADDRESS;
69}
70
71#endif /* __ASSEMBLY__ */
72#include <linux/ioport.h>
73
74#define HIGH_MEMORY	(1024*1024)
75#endif /* _ASM_X86_E820_H */