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#ifndef _ASM_X86_MCE_H
#define _ASM_X86_MCE_H
#include <linux/types.h>
#include <asm/ioctls.h>
/*
* Machine Check support for x86
*/
/* MCG_CAP register defines */
#define MCG_BANKCNT_MASK 0xff /* Number of Banks */
#define MCG_CTL_P (1ULL<<8) /* MCG_CTL register available */
#define MCG_EXT_P (1ULL<<9) /* Extended registers available */
#define MCG_CMCI_P (1ULL<<10) /* CMCI supported */
#define MCG_EXT_CNT_MASK 0xff0000 /* Number of Extended registers */
#define MCG_EXT_CNT_SHIFT 16
#define MCG_EXT_CNT(c) (((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT)
#define MCG_SER_P (1ULL<<24) /* MCA recovery/new status bits */
#define MCG_ELOG_P (1ULL<<26) /* Extended error log supported */
/* MCG_STATUS register defines */
#define MCG_STATUS_RIPV (1ULL<<0) /* restart ip valid */
#define MCG_STATUS_EIPV (1ULL<<1) /* ip points to correct instruction */
#define MCG_STATUS_MCIP (1ULL<<2) /* machine check in progress */
/* MCi_STATUS register defines */
#define MCI_STATUS_VAL (1ULL<<63) /* valid error */
#define MCI_STATUS_OVER (1ULL<<62) /* previous errors lost */
#define MCI_STATUS_UC (1ULL<<61) /* uncorrected error */
#define MCI_STATUS_EN (1ULL<<60) /* error enabled */
#define MCI_STATUS_MISCV (1ULL<<59) /* misc error reg. valid */
#define MCI_STATUS_ADDRV (1ULL<<58) /* addr reg. valid */
#define MCI_STATUS_PCC (1ULL<<57) /* processor context corrupt */
#define MCI_STATUS_S (1ULL<<56) /* Signaled machine check */
#define MCI_STATUS_AR (1ULL<<55) /* Action required */
/*
* Note that the full MCACOD field of IA32_MCi_STATUS MSR is
* bits 15:0. But bit 12 is the 'F' bit, defined for corrected
* errors to indicate that errors are being filtered by hardware.
* We should mask out bit 12 when looking for specific signatures
* of uncorrected errors - so the F bit is deliberately skipped
* in this #define.
*/
#define MCACOD 0xefff /* MCA Error Code */
/* Architecturally defined codes from SDM Vol. 3B Chapter 15 */
#define MCACOD_SCRUB 0x00C0 /* 0xC0-0xCF Memory Scrubbing */
#define MCACOD_SCRUBMSK 0xeff0 /* Skip bit 12 ('F' bit) */
#define MCACOD_L3WB 0x017A /* L3 Explicit Writeback */
#define MCACOD_DATA 0x0134 /* Data Load */
#define MCACOD_INSTR 0x0150 /* Instruction Fetch */
/* MCi_MISC register defines */
#define MCI_MISC_ADDR_LSB(m) ((m) & 0x3f)
#define MCI_MISC_ADDR_MODE(m) (((m) >> 6) & 7)
#define MCI_MISC_ADDR_SEGOFF 0 /* segment offset */
#define MCI_MISC_ADDR_LINEAR 1 /* linear address */
#define MCI_MISC_ADDR_PHYS 2 /* physical address */
#define MCI_MISC_ADDR_MEM 3 /* memory address */
#define MCI_MISC_ADDR_GENERIC 7 /* generic */
/* CTL2 register defines */
#define MCI_CTL2_CMCI_EN (1ULL << 30)
#define MCI_CTL2_CMCI_THRESHOLD_MASK 0x7fffULL
#define MCJ_CTX_MASK 3
#define MCJ_CTX(flags) ((flags) & MCJ_CTX_MASK)
#define MCJ_CTX_RANDOM 0 /* inject context: random */
#define MCJ_CTX_PROCESS 1 /* inject context: process */
#define MCJ_CTX_IRQ 2 /* inject context: IRQ */
#define MCJ_NMI_BROADCAST 4 /* do NMI broadcasting */
#define MCJ_EXCEPTION 8 /* raise as exception */
/* 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 time; /* wall time_t when error was detected */
__u8 cpuvendor; /* cpu vendor as encoded in system.h */
__u8 inject_flags; /* software inject flags */
__u16 pad;
__u32 cpuid; /* CPUID 1 EAX */
__u8 cs; /* code segment */
__u8 bank; /* machine check bank */
__u8 cpu; /* cpu number; obsolete; use extcpu now */
__u8 finished; /* entry is valid */
__u32 extcpu; /* linux cpu number that detected the error */
__u32 socketid; /* CPU socket ID */
__u32 apicid; /* CPU initial apic ID */
__u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */
};
/*
* 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 recordlen; /* length of struct mce */
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 /* _ASM_X86_MCE_H */
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