include/asm-x86_64/mce.h

   1 #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 */
  26 struct 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
  50 struct 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
  70
  71 #define K8_MCE_THRESHOLD_BASE      (MCE_EXTENDED_BANK + 1)      /* MCE_AMD */
  72 #define K8_MCE_THRESHOLD_BANK_0    (MCE_THRESHOLD_BASE + 0 * 9)
  73 #define K8_MCE_THRESHOLD_BANK_1    (MCE_THRESHOLD_BASE + 1 * 9)
  74 #define K8_MCE_THRESHOLD_BANK_2    (MCE_THRESHOLD_BASE + 2 * 9)
  75 #define K8_MCE_THRESHOLD_BANK_3    (MCE_THRESHOLD_BASE + 3 * 9)
  76 #define K8_MCE_THRESHOLD_BANK_4    (MCE_THRESHOLD_BASE + 4 * 9)
  77 #define K8_MCE_THRESHOLD_BANK_5    (MCE_THRESHOLD_BASE + 5 * 9)
  78 #define K8_MCE_THRESHOLD_DRAM_ECC  (MCE_THRESHOLD_BANK_4 + 0)
  79
  80 #ifdef __KERNEL__
  81 #include <asm/atomic.h>
  82
  83 void mce_log(struct mce *m);
  84 DECLARE_PER_CPU(struct sys_device, device_mce);
  85
  86 #ifdef CONFIG_X86_MCE_INTEL
  87 void mce_intel_feature_init(struct cpuinfo_x86 *c);
  88 #else
  89 static inline void mce_intel_feature_init(struct cpuinfo_x86 *c)
  90 {
  91 }
  92 #endif
  93
  94 #ifdef CONFIG_X86_MCE_AMD
  95 void mce_amd_feature_init(struct cpuinfo_x86 *c);
  96 #else
  97 static inline void mce_amd_feature_init(struct cpuinfo_x86 *c)
  98 {
  99 }
 100 #endif
 101
 102 void mce_log_therm_throt_event(unsigned int cpu, __u64 status);
 103
 104 extern atomic_t mce_entry;
 105
 106 extern void do_machine_check(struct pt_regs *, long);
 107
 108 extern int mce_notify_user(void);
 109
 110 extern void stop_mce(void);
 111 extern void restart_mce(void);
 112
 113 #endif
 114
 115 #endif