diff options
author | Ingo Molnar <mingo@elte.hu> | 2008-07-15 17:12:58 -0400 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-15 17:12:58 -0400 |
commit | 1e09481365ce248dbb4eb06dad70129bb5807037 (patch) | |
tree | c0cff5bef95c8b5e7486f144718ade9a06c284dc /include/asm-x86/e820.h | |
parent | 3e2f69fdd1b00166e7d589bce56b2d36a9e74374 (diff) | |
parent | b9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff) |
Merge branch 'linus' into core/softlockup
Conflicts:
kernel/softlockup.c
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/e820.h')
-rw-r--r-- | include/asm-x86/e820.h | 107 |
1 files changed, 101 insertions, 6 deletions
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h index 7004251fc66b..33e793e991d0 100644 --- a/include/asm-x86/e820.h +++ b/include/asm-x86/e820.h | |||
@@ -2,6 +2,41 @@ | |||
2 | #define __ASM_E820_H | 2 | #define __ASM_E820_H |
3 | #define E820MAP 0x2d0 /* our map */ | 3 | #define E820MAP 0x2d0 /* our map */ |
4 | #define E820MAX 128 /* number of entries in E820MAP */ | 4 | #define E820MAX 128 /* number of entries in E820MAP */ |
5 | |||
6 | /* | ||
7 | * Legacy E820 BIOS limits us to 128 (E820MAX) nodes due to the | ||
8 | * constrained space in the zeropage. If we have more nodes than | ||
9 | * that, and if we've booted off EFI firmware, then the EFI tables | ||
10 | * passed us from the EFI firmware can list more nodes. Size our | ||
11 | * internal memory map tables to have room for these additional | ||
12 | * nodes, based on up to three entries per node for which the | ||
13 | * kernel was built: MAX_NUMNODES == (1 << CONFIG_NODES_SHIFT), | ||
14 | * plus E820MAX, allowing space for the possible duplicate E820 | ||
15 | * entries that might need room in the same arrays, prior to the | ||
16 | * call to sanitize_e820_map() to remove duplicates. The allowance | ||
17 | * of three memory map entries per node is "enough" entries for | ||
18 | * the initial hardware platform motivating this mechanism to make | ||
19 | * use of additional EFI map entries. Future platforms may want | ||
20 | * to allow more than three entries per node or otherwise refine | ||
21 | * this size. | ||
22 | */ | ||
23 | |||
24 | /* | ||
25 | * Odd: 'make headers_check' complains about numa.h if I try | ||
26 | * to collapse the next two #ifdef lines to a single line: | ||
27 | * #if defined(__KERNEL__) && defined(CONFIG_EFI) | ||
28 | */ | ||
29 | #ifdef __KERNEL__ | ||
30 | #ifdef CONFIG_EFI | ||
31 | #include <linux/numa.h> | ||
32 | #define E820_X_MAX (E820MAX + 3 * MAX_NUMNODES) | ||
33 | #else /* ! CONFIG_EFI */ | ||
34 | #define E820_X_MAX E820MAX | ||
35 | #endif | ||
36 | #else /* ! __KERNEL__ */ | ||
37 | #define E820_X_MAX E820MAX | ||
38 | #endif | ||
39 | |||
5 | #define E820NR 0x1e8 /* # entries in E820MAP */ | 40 | #define E820NR 0x1e8 /* # entries in E820MAP */ |
6 | 41 | ||
7 | #define E820_RAM 1 | 42 | #define E820_RAM 1 |
@@ -9,6 +44,9 @@ | |||
9 | #define E820_ACPI 3 | 44 | #define E820_ACPI 3 |
10 | #define E820_NVS 4 | 45 | #define E820_NVS 4 |
11 | 46 | ||
47 | /* reserved RAM used by kernel itself */ | ||
48 | #define E820_RESERVED_KERN 128 | ||
49 | |||
12 | #ifndef __ASSEMBLY__ | 50 | #ifndef __ASSEMBLY__ |
13 | struct e820entry { | 51 | struct e820entry { |
14 | __u64 addr; /* start of memory segment */ | 52 | __u64 addr; /* start of memory segment */ |
@@ -18,22 +56,79 @@ struct e820entry { | |||
18 | 56 | ||
19 | struct e820map { | 57 | struct e820map { |
20 | __u32 nr_map; | 58 | __u32 nr_map; |
21 | struct e820entry map[E820MAX]; | 59 | struct e820entry map[E820_X_MAX]; |
22 | }; | 60 | }; |
61 | |||
62 | /* see comment in arch/x86/kernel/e820.c */ | ||
63 | extern struct e820map e820; | ||
64 | extern struct e820map e820_saved; | ||
65 | |||
66 | extern int e820_any_mapped(u64 start, u64 end, unsigned type); | ||
67 | extern int e820_all_mapped(u64 start, u64 end, unsigned type); | ||
68 | extern void e820_add_region(u64 start, u64 size, int type); | ||
69 | extern void e820_print_map(char *who); | ||
70 | extern int | ||
71 | sanitize_e820_map(struct e820entry *biosmap, int max_nr_map, int *pnr_map); | ||
72 | extern u64 e820_update_range(u64 start, u64 size, unsigned old_type, | ||
73 | unsigned new_type); | ||
74 | extern u64 e820_remove_range(u64 start, u64 size, unsigned old_type, | ||
75 | int checktype); | ||
76 | extern void update_e820(void); | ||
77 | extern void e820_setup_gap(void); | ||
78 | extern int e820_search_gap(unsigned long *gapstart, unsigned long *gapsize, | ||
79 | unsigned long start_addr, unsigned long long end_addr); | ||
80 | struct setup_data; | ||
81 | extern void parse_e820_ext(struct setup_data *data, unsigned long pa_data); | ||
82 | |||
83 | #if defined(CONFIG_X86_64) || \ | ||
84 | (defined(CONFIG_X86_32) && defined(CONFIG_HIBERNATION)) | ||
85 | extern void e820_mark_nosave_regions(unsigned long limit_pfn); | ||
86 | #else | ||
87 | static inline void e820_mark_nosave_regions(unsigned long limit_pfn) | ||
88 | { | ||
89 | } | ||
90 | #endif | ||
91 | |||
92 | extern unsigned long end_user_pfn; | ||
93 | |||
94 | extern u64 find_e820_area(u64 start, u64 end, u64 size, u64 align); | ||
95 | extern u64 find_e820_area_size(u64 start, u64 *sizep, u64 align); | ||
96 | extern void reserve_early(u64 start, u64 end, char *name); | ||
97 | extern void reserve_early_overlap_ok(u64 start, u64 end, char *name); | ||
98 | extern void free_early(u64 start, u64 end); | ||
99 | extern void early_res_to_bootmem(u64 start, u64 end); | ||
100 | extern u64 early_reserve_e820(u64 startt, u64 sizet, u64 align); | ||
101 | |||
102 | extern unsigned long e820_end_of_ram_pfn(void); | ||
103 | extern unsigned long e820_end_of_low_ram_pfn(void); | ||
104 | extern int e820_find_active_region(const struct e820entry *ei, | ||
105 | unsigned long start_pfn, | ||
106 | unsigned long last_pfn, | ||
107 | unsigned long *ei_startpfn, | ||
108 | unsigned long *ei_endpfn); | ||
109 | extern void e820_register_active_regions(int nid, unsigned long start_pfn, | ||
110 | unsigned long end_pfn); | ||
111 | extern u64 e820_hole_size(u64 start, u64 end); | ||
112 | extern void finish_e820_parsing(void); | ||
113 | extern void e820_reserve_resources(void); | ||
114 | extern void setup_memory_map(void); | ||
115 | extern char *default_machine_specific_memory_setup(void); | ||
116 | extern char *machine_specific_memory_setup(void); | ||
117 | extern char *memory_setup(void); | ||
118 | |||
23 | #endif /* __ASSEMBLY__ */ | 119 | #endif /* __ASSEMBLY__ */ |
24 | 120 | ||
25 | #define ISA_START_ADDRESS 0xa0000 | 121 | #define ISA_START_ADDRESS 0xa0000 |
26 | #define ISA_END_ADDRESS 0x100000 | 122 | #define ISA_END_ADDRESS 0x100000 |
123 | #define is_ISA_range(s, e) ((s) >= ISA_START_ADDRESS && (e) < ISA_END_ADDRESS) | ||
27 | 124 | ||
28 | #define BIOS_BEGIN 0x000a0000 | 125 | #define BIOS_BEGIN 0x000a0000 |
29 | #define BIOS_END 0x00100000 | 126 | #define BIOS_END 0x00100000 |
30 | 127 | ||
31 | #ifdef __KERNEL__ | 128 | #ifdef __KERNEL__ |
32 | #ifdef CONFIG_X86_32 | 129 | #include <linux/ioport.h> |
33 | # include "e820_32.h" | 130 | |
34 | #else | 131 | #define HIGH_MEMORY (1024*1024) |
35 | # include "e820_64.h" | ||
36 | #endif | ||
37 | #endif /* __KERNEL__ */ | 132 | #endif /* __KERNEL__ */ |
38 | 133 | ||
39 | #endif /* __ASM_E820_H */ | 134 | #endif /* __ASM_E820_H */ |