blob: 7229785094e375ff3e8bba0629b787aa66f609f5 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_MCE_H
2#define _ASM_MCE_H 1
3
4#include <asm/ioctls.h>
5#include <asm/types.h>
6
7/*
8 * Machine Check support for x86
9 */
10
11#define MCG_CTL_P (1UL<<8) /* MCG_CAP register available */
12
13#define MCG_STATUS_RIPV (1UL<<0) /* restart ip valid */
14#define MCG_STATUS_EIPV (1UL<<1) /* eip points to correct instruction */
15#define MCG_STATUS_MCIP (1UL<<2) /* machine check in progress */
16
17#define MCI_STATUS_VAL (1UL<<63) /* valid error */
18#define MCI_STATUS_OVER (1UL<<62) /* previous errors lost */
19#define MCI_STATUS_UC (1UL<<61) /* uncorrected error */
20#define MCI_STATUS_EN (1UL<<60) /* error enabled */
21#define MCI_STATUS_MISCV (1UL<<59) /* misc error reg. valid */
22#define MCI_STATUS_ADDRV (1UL<<58) /* addr reg. valid */
23#define MCI_STATUS_PCC (1UL<<57) /* processor context corrupt */
24
25/* Fields are zero when not available */
26struct mce {
27 __u64 status;
28 __u64 misc;
29 __u64 addr;
30 __u64 mcgstatus;
31 __u64 rip;
32 __u64 tsc; /* cpu time stamp counter */
33 __u64 res1; /* for future extension */
34 __u64 res2; /* dito. */
35 __u8 cs; /* code segment */
36 __u8 bank; /* machine check bank */
37 __u8 cpu; /* cpu that raised the error */
38 __u8 finished; /* entry is valid */
39 __u32 pad;
40};
41
42/*
43 * This structure contains all data related to the MCE log.
44 * Also carries a signature to make it easier to find from external debugging tools.
45 * Each entry is only valid when its finished flag is set.
46 */
47
48#define MCE_LOG_LEN 32
49
50struct mce_log {
51 char signature[12]; /* "MACHINECHECK" */
52 unsigned len; /* = MCE_LOG_LEN */
53 unsigned next;
54 unsigned flags;
55 unsigned pad0;
56 struct mce entry[MCE_LOG_LEN];
57};
58
59#define MCE_OVERFLOW 0 /* bit 0 in flags means overflow */
60
61#define MCE_LOG_SIGNATURE "MACHINECHECK"
62
63#define MCE_GET_RECORD_LEN _IOR('M', 1, int)
64#define MCE_GET_LOG_LEN _IOR('M', 2, int)
65#define MCE_GETCLEAR_FLAGS _IOR('M', 3, int)
66
67/* Software defined banks */
68#define MCE_EXTENDED_BANK 128
69#define MCE_THERMAL_BANK MCE_EXTENDED_BANK + 0
Jacob Shin89b831e2005-11-05 17:25:53 +010070#define MCE_THRESHOLD_BASE MCE_EXTENDED_BANK + 1 /* MCE_AMD */
71#define MCE_THRESHOLD_DRAM_ECC MCE_THRESHOLD_BASE + 4
Linus Torvalds1da177e2005-04-16 15:20:36 -070072
Andi Kleen553f2652006-04-07 19:49:57 +020073#ifdef __KERNEL__
74#include <asm/atomic.h>
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076void mce_log(struct mce *m);
77#ifdef CONFIG_X86_MCE_INTEL
78void mce_intel_feature_init(struct cpuinfo_x86 *c);
79#else
80static inline void mce_intel_feature_init(struct cpuinfo_x86 *c)
81{
82}
83#endif
84
Jacob Shin89b831e2005-11-05 17:25:53 +010085#ifdef CONFIG_X86_MCE_AMD
86void mce_amd_feature_init(struct cpuinfo_x86 *c);
87#else
88static inline void mce_amd_feature_init(struct cpuinfo_x86 *c)
89{
90}
91#endif
92
Andi Kleen553f2652006-04-07 19:49:57 +020093extern atomic_t mce_entry;
94
95#endif
96
Linus Torvalds1da177e2005-04-16 15:20:36 -070097#endif