122 lines
4.3 KiB
C
122 lines
4.3 KiB
C
#ifndef _UAPI_ASM_X86_MCE_H
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#define _UAPI_ASM_X86_MCE_H
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#include <linux/types.h>
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#include <asm/ioctls.h>
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/*
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* Machine Check support for x86
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*/
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/* MCG_CAP register defines */
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#define MCG_BANKCNT_MASK 0xff /* Number of Banks */
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#define MCG_CTL_P (1ULL<<8) /* MCG_CTL register available */
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#define MCG_EXT_P (1ULL<<9) /* Extended registers available */
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#define MCG_CMCI_P (1ULL<<10) /* CMCI supported */
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#define MCG_EXT_CNT_MASK 0xff0000 /* Number of Extended registers */
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#define MCG_EXT_CNT_SHIFT 16
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#define MCG_EXT_CNT(c) (((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT)
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#define MCG_SER_P (1ULL<<24) /* MCA recovery/new status bits */
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/* MCG_STATUS register defines */
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#define MCG_STATUS_RIPV (1ULL<<0) /* restart ip valid */
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#define MCG_STATUS_EIPV (1ULL<<1) /* ip points to correct instruction */
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#define MCG_STATUS_MCIP (1ULL<<2) /* machine check in progress */
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/* MCi_STATUS register defines */
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#define MCI_STATUS_VAL (1ULL<<63) /* valid error */
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#define MCI_STATUS_OVER (1ULL<<62) /* previous errors lost */
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#define MCI_STATUS_UC (1ULL<<61) /* uncorrected error */
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#define MCI_STATUS_EN (1ULL<<60) /* error enabled */
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#define MCI_STATUS_MISCV (1ULL<<59) /* misc error reg. valid */
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#define MCI_STATUS_ADDRV (1ULL<<58) /* addr reg. valid */
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#define MCI_STATUS_PCC (1ULL<<57) /* processor context corrupt */
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#define MCI_STATUS_S (1ULL<<56) /* Signaled machine check */
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#define MCI_STATUS_AR (1ULL<<55) /* Action required */
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#define MCACOD 0xffff /* MCA Error Code */
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/* Architecturally defined codes from SDM Vol. 3B Chapter 15 */
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#define MCACOD_SCRUB 0x00C0 /* 0xC0-0xCF Memory Scrubbing */
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#define MCACOD_SCRUBMSK 0xfff0
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#define MCACOD_L3WB 0x017A /* L3 Explicit Writeback */
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#define MCACOD_DATA 0x0134 /* Data Load */
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#define MCACOD_INSTR 0x0150 /* Instruction Fetch */
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/* MCi_MISC register defines */
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#define MCI_MISC_ADDR_LSB(m) ((m) & 0x3f)
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#define MCI_MISC_ADDR_MODE(m) (((m) >> 6) & 7)
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#define MCI_MISC_ADDR_SEGOFF 0 /* segment offset */
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#define MCI_MISC_ADDR_LINEAR 1 /* linear address */
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#define MCI_MISC_ADDR_PHYS 2 /* physical address */
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#define MCI_MISC_ADDR_MEM 3 /* memory address */
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#define MCI_MISC_ADDR_GENERIC 7 /* generic */
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/* CTL2 register defines */
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#define MCI_CTL2_CMCI_EN (1ULL << 30)
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#define MCI_CTL2_CMCI_THRESHOLD_MASK 0x7fffULL
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#define MCJ_CTX_MASK 3
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#define MCJ_CTX(flags) ((flags) & MCJ_CTX_MASK)
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#define MCJ_CTX_RANDOM 0 /* inject context: random */
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#define MCJ_CTX_PROCESS 0x1 /* inject context: process */
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#define MCJ_CTX_IRQ 0x2 /* inject context: IRQ */
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#define MCJ_NMI_BROADCAST 0x4 /* do NMI broadcasting */
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#define MCJ_EXCEPTION 0x8 /* raise as exception */
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#define MCJ_IRQ_BRAODCAST 0x10 /* do IRQ broadcasting */
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/* Fields are zero when not available */
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struct mce {
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__u64 status;
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__u64 misc;
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__u64 addr;
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__u64 mcgstatus;
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__u64 ip;
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__u64 tsc; /* cpu time stamp counter */
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__u64 time; /* wall time_t when error was detected */
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__u8 cpuvendor; /* cpu vendor as encoded in system.h */
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__u8 inject_flags; /* software inject flags */
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__u16 pad;
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__u32 cpuid; /* CPUID 1 EAX */
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__u8 cs; /* code segment */
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__u8 bank; /* machine check bank */
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__u8 cpu; /* cpu number; obsolete; use extcpu now */
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__u8 finished; /* entry is valid */
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__u32 extcpu; /* linux cpu number that detected the error */
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__u32 socketid; /* CPU socket ID */
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__u32 apicid; /* CPU initial apic ID */
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__u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
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};
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/*
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* This structure contains all data related to the MCE log. Also
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* carries a signature to make it easier to find from external
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* debugging tools. Each entry is only valid when its finished flag
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* is set.
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*/
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#define MCE_LOG_LEN 32
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struct mce_log {
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char signature[12]; /* "MACHINECHECK" */
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unsigned len; /* = MCE_LOG_LEN */
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unsigned next;
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unsigned flags;
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unsigned recordlen; /* length of struct mce */
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struct mce entry[MCE_LOG_LEN];
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};
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#define MCE_OVERFLOW 0 /* bit 0 in flags means overflow */
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#define MCE_LOG_SIGNATURE "MACHINECHECK"
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#define MCE_GET_RECORD_LEN _IOR('M', 1, int)
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#define MCE_GET_LOG_LEN _IOR('M', 2, int)
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#define MCE_GETCLEAR_FLAGS _IOR('M', 3, int)
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/* Software defined banks */
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#define MCE_EXTENDED_BANK 128
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#define MCE_THERMAL_BANK MCE_EXTENDED_BANK + 0
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#define K8_MCE_THRESHOLD_BASE (MCE_EXTENDED_BANK + 1)
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#endif /* _UAPI_ASM_X86_MCE_H */
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