#ifndef _ASM_X86_MCE_H #define _ASM_X86_MCE_H #include #include /* * Machine Check support for x86 */ #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_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 */ #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 */ /* MISC register defines */ #define MCM_ADDR_SEGOFF 0 /* segment offset */ #define MCM_ADDR_LINEAR 1 /* linear address */ #define MCM_ADDR_PHYS 2 /* physical address */ #define MCM_ADDR_MEM 3 /* memory address */ #define MCM_ADDR_GENERIC 7 /* generic */ #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 */ /* 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) #ifdef __KERNEL__ #include #include #include extern int mce_disabled; extern int mce_p5_enabled; #ifdef CONFIG_X86_MCE void mcheck_init(struct cpuinfo_x86 *c); #else static inline void mcheck_init(struct cpuinfo_x86 *c) {} #endif #ifdef CONFIG_X86_ANCIENT_MCE void intel_p5_mcheck_init(struct cpuinfo_x86 *c); void winchip_mcheck_init(struct cpuinfo_x86 *c); static inline void enable_p5_mce(void) { mce_p5_enabled = 1; } #else static inline void intel_p5_mcheck_init(struct cpuinfo_x86 *c) {} static inline void winchip_mcheck_init(struct cpuinfo_x86 *c) {} static inline void enable_p5_mce(void) {} #endif void mce_setup(struct mce *m); void mce_log(struct mce *m); DECLARE_PER_CPU(struct sys_device, mce_dev); /* * Maximum banks number. * This is the limit of the current register layout on * Intel CPUs. */ #define MAX_NR_BANKS 32 #ifdef CONFIG_X86_MCE_INTEL extern int mce_cmci_disabled; extern int mce_ignore_ce; void mce_intel_feature_init(struct cpuinfo_x86 *c); void cmci_clear(void); void cmci_reenable(void); void cmci_rediscover(int dying); void cmci_recheck(void); #else static inline void mce_intel_feature_init(struct cpuinfo_x86 *c) { } static inline void cmci_clear(void) {} static inline void cmci_reenable(void) {} static inline void cmci_rediscover(int dying) {} static inline void cmci_recheck(void) {} #endif #ifdef CONFIG_X86_MCE_AMD void mce_amd_feature_init(struct cpuinfo_x86 *c); #else static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { } #endif int mce_available(struct cpuinfo_x86 *c); DECLARE_PER_CPU(unsigned, mce_exception_count); DECLARE_PER_CPU(unsigned, mce_poll_count); extern atomic_t mce_entry; typedef DECLARE_BITMAP(mce_banks_t, MAX_NR_BANKS); DECLARE_PER_CPU(mce_banks_t, mce_poll_banks); enum mcp_flags { MCP_TIMESTAMP = (1 << 0), /* log time stamp */ MCP_UC = (1 << 1), /* log uncorrected errors */ MCP_DONTLOG = (1 << 2), /* only clear, don't log */ }; void machine_check_poll(enum mcp_flags flags, mce_banks_t *b); int mce_notify_irq(void); void mce_notify_process(void); DECLARE_PER_CPU(struct mce, injectm); extern struct file_operations mce_chrdev_ops; /* * Exception handler */ /* Call the installed machine check handler for this CPU setup. */ extern void (*machine_check_vector)(struct pt_regs *, long error_code); void do_machine_check(struct pt_regs *, long); /* * Threshold handler */ extern void (*mce_threshold_vector)(void); extern void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu); /* * Thermal handler */ void intel_init_thermal(struct cpuinfo_x86 *c); void mce_log_therm_throt_event(__u64 status); #endif /* __KERNEL__ */ #endif /* _ASM_X86_MCE_H */