1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _ASM_X86_MCE_H
3#define _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, shared fields to the end of the structure.
12 * Do not add vendor-specific fields.
13 */
14struct mce {
15 __u64 status; /* Bank's MCi_STATUS MSR */
16 __u64 misc; /* Bank's MCi_MISC MSR */
17 __u64 addr; /* Bank's MCi_ADDR MSR */
18 __u64 mcgstatus; /* Machine Check Global Status MSR */
19 __u64 ip; /* Instruction Pointer when the error happened */
20 __u64 tsc; /* CPU time stamp counter */
21 __u64 time; /* Wall time_t when error was detected */
22 __u8 cpuvendor; /* Kernel's X86_VENDOR enum */
23 __u8 inject_flags; /* Software inject flags */
24 __u8 severity; /* Error severity */
25 __u8 pad;
26 __u32 cpuid; /* CPUID 1 EAX */
27 __u8 cs; /* Code segment */
28 __u8 bank; /* Machine check bank reporting the error */
29 __u8 cpu; /* CPU number; obsoleted by extcpu */
30 __u8 finished; /* Entry is valid */
31 __u32 extcpu; /* Linux CPU number that detected the error */
32 __u32 socketid; /* CPU socket ID */
33 __u32 apicid; /* CPU initial APIC ID */
34 __u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
35 __u64 synd; /* MCA_SYND MSR: only valid on SMCA systems */
36 __u64 ipid; /* MCA_IPID MSR: only valid on SMCA systems */
37 __u64 ppin; /* Protected Processor Inventory Number */
38 __u32 microcode; /* Microcode revision */
39 __u64 kflags; /* Internal kernel use */
40};
41
42#define MCE_GET_RECORD_LEN _IOR('M', 1, int)
43#define MCE_GET_LOG_LEN _IOR('M', 2, int)
44#define MCE_GETCLEAR_FLAGS _IOR('M', 3, int)
45
46#endif /* _ASM_X86_MCE_H */