summaryrefslogtreecommitdiffstats
path: root/include/asm-x86/mce.h
blob: 036133eaf7448e4625a713bab4b9ff3f53e98bb2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
#ifndef ASM_X86__MCE_H
#define ASM_X86__MCE_H

#ifdef __x86_64__

#include <asm/ioctls.h>
#include <asm/types.h>

/*
 * Machine Check support for x86
 */

#define MCG_CTL_P	 (1UL<<8)   /* MCG_CAP register available */

#define MCG_STATUS_RIPV  (1UL<<0)   /* restart ip valid */
#define MCG_STATUS_EIPV  (1UL<<1)   /* ip points to correct instruction */
#define MCG_STATUS_MCIP  (1UL<<2)   /* machine check in progress */

#define MCI_STATUS_VAL   (1UL<<63)  /* valid error */
#define MCI_STATUS_OVER  (1UL<<62)  /* previous errors lost */
#define MCI_STATUS_UC    (1UL<<61)  /* uncorrected error */
#define MCI_STATUS_EN    (1UL<<60)  /* error enabled */
#define MCI_STATUS_MISCV (1UL<<59)  /* misc error reg. valid */
#define MCI_STATUS_ADDRV (1UL<<58)  /* addr reg. valid */
#define MCI_STATUS_PCC   (1UL<<57)  /* processor context corrupt */

/* Fields are zero when not available */
struct mce {
	__u64 status;
	__u64 misc;
	__u64 addr;
	__u64 mcgstatus;
	__u64 ip;
	__u64 tsc;	/* cpu time stamp counter */
	__u64 res1;	/* for future extension */
	__u64 res2;	/* dito. */
	__u8  cs;		/* code segment */
	__u8  bank;	/* machine check bank */
	__u8  cpu;	/* cpu that raised the error */
	__u8  finished;   /* entry is valid */
	__u32 pad;
};

/*
 * This structure contains all data related to the MCE log.  Also
 * carries a signature to make it easier to find from external
 * debugging tools.  Each entry is only valid when its finished flag
 * is set.
 */

#define MCE_LOG_LEN 32

struct mce_log {
	char signature[12]; /* "MACHINECHECK" */
	unsigned len;	    /* = MCE_LOG_LEN */
	unsigned next;
	unsigned flags;
	unsigned pad0;
	struct mce entry[MCE_LOG_LEN];
};

#define MCE_OVERFLOW 0		/* bit 0 in flags means overflow */

#define MCE_LOG_SIGNATURE	"MACHINECHECK"

#define MCE_GET_RECORD_LEN   _IOR('M', 1, int)
#define MCE_GET_LOG_LEN      _IOR('M', 2, int)
#define MCE_GETCLEAR_FLAGS   _IOR('M', 3, int)

/* Software defined banks */
#define MCE_EXTENDED_BANK	128
#define MCE_THERMAL_BANK	MCE_EXTENDED_BANK + 0

#define K8_MCE_THRESHOLD_BASE      (MCE_EXTENDED_BANK + 1)      /* MCE_AMD */
#define K8_MCE_THRESHOLD_BANK_0    (MCE_THRESHOLD_BASE + 0 * 9)
#define K8_MCE_THRESHOLD_BANK_1    (MCE_THRESHOLD_BASE + 1 * 9)
#define K8_MCE_THRESHOLD_BANK_2    (MCE_THRESHOLD_BASE + 2 * 9)
#define K8_MCE_THRESHOLD_BANK_3    (MCE_THRESHOLD_BASE + 3 * 9)
#define K8_MCE_THRESHOLD_BANK_4    (MCE_THRESHOLD_BASE + 4 * 9)
#define K8_MCE_THRESHOLD_BANK_5    (MCE_THRESHOLD_BASE + 5 * 9)
#define K8_MCE_THRESHOLD_DRAM_ECC  (MCE_THRESHOLD_BANK_4 + 0)

#endif /* __x86_64__ */

#ifdef __KERNEL__

#ifdef CONFIG_X86_32
extern int mce_disabled;
#else /* CONFIG_X86_32 */

#include <asm/atomic.h>

void mce_log(struct mce *m);
DECLARE_PER_CPU(struct sys_device, device_mce);
extern void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu);

#ifdef CONFIG_X86_MCE_INTEL
void mce_intel_feature_init(struct cpuinfo_x86 *c);
#else
static inline void mce_intel_feature_init(struct cpuinfo_x86 *c) { }
#endif

#ifdef CONFIG_X86_MCE_AMD
void mce_amd_feature_init(struct cpuinfo_x86 *c);
#else
static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { }
#endif

void mce_log_therm_throt_event(unsigned int cpu, __u64 status);

extern atomic_t mce_entry;

extern void do_machine_check(struct pt_regs *, long);
extern int mce_notify_user(void);

#endif /* !CONFIG_X86_32 */



#ifdef CONFIG_X86_MCE
extern void mcheck_init(struct cpuinfo_x86 *c);
#else
#define mcheck_init(c) do { } while (0)
#endif
extern void stop_mce(void);
extern void restart_mce(void);

#endif /* __KERNEL__ */

#endif /* ASM_X86__MCE_H */
OpenPOWER on IntegriCloud