1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_ASM_X86_MCE_H
3 #define _UAPI_ASM_X86_MCE_H
4 
5 #include <linux/types.h>
6 #include <linux/ioctl.h>
7 
8 /*
9  * Fields are zero when not available. Also, this struct is shared with
10  * userspace mcelog and thus must keep existing fields at current offsets.
11  * Only add new fields to the end of the structure
12  */
13 struct mce {
14 	__u64 status;		/* Bank's MCi_STATUS MSR */
15 	__u64 misc;		/* Bank's MCi_MISC MSR */
16 	__u64 addr;		/* Bank's MCi_ADDR MSR */
17 	__u64 mcgstatus;	/* Machine Check Global Status MSR */
18 	__u64 ip;		/* Instruction Pointer when the error happened */
19 	__u64 tsc;		/* CPU time stamp counter */
20 	__u64 time;		/* Wall time_t when error was detected */
21 	__u8  cpuvendor;	/* Kernel's X86_VENDOR enum */
22 	__u8  inject_flags;	/* Software inject flags */
23 	__u8  severity;		/* Error severity */
24 	__u8  pad;
25 	__u32 cpuid;		/* CPUID 1 EAX */
26 	__u8  cs;		/* Code segment */
27 	__u8  bank;		/* Machine check bank reporting the error */
28 	__u8  cpu;		/* CPU number; obsoleted by extcpu */
29 	__u8  finished;		/* Entry is valid */
30 	__u32 extcpu;		/* Linux CPU number that detected the error */
31 	__u32 socketid;		/* CPU socket ID */
32 	__u32 apicid;		/* CPU initial APIC ID */
33 	__u64 mcgcap;		/* MCGCAP MSR: machine check capabilities of CPU */
34 	__u64 synd;		/* MCA_SYND MSR: only valid on SMCA systems */
35 	__u64 ipid;		/* MCA_IPID MSR: only valid on SMCA systems */
36 	__u64 ppin;		/* Protected Processor Inventory Number */
37 	__u32 microcode;	/* Microcode revision */
38 	__u64 kflags;		/* Internal kernel use */
39 };
40 
41 #define MCE_GET_RECORD_LEN   _IOR('M', 1, int)
42 #define MCE_GET_LOG_LEN      _IOR('M', 2, int)
43 #define MCE_GETCLEAR_FLAGS   _IOR('M', 3, int)
44 
45 #endif /* _UAPI_ASM_X86_MCE_H */
46