arch/x86/include/asm/mce.h - kernel/skids - Git at Google

 #ifndef _ASM_X86_MCE_H
 #define _ASM_X86_MCE_H

 #include <linux/types.h>
 #include <asm/ioctls.h>

 /*
  * 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 */
 #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)


 #ifdef __KERNEL__

 extern struct atomic_notifier_head x86_mce_decoder_chain;

 #include <linux/percpu.h>
 #include <linux/init.h>
 #include <asm/atomic.h>

 extern int mce_disabled;
 extern int mce_p5_enabled;

 #ifdef CONFIG_X86_MCE
 int mcheck_init(void);
 void mcheck_cpu_init(struct cpuinfo_x86 *c);
 #else
 static inline int mcheck_init(void) { return 0; }
 static inline void mcheck_cpu_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

 extern void (*x86_mce_decode_callback)(struct mce *m);

 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);

 #ifdef CONFIG_X86_THERMAL_VECTOR
 extern void mcheck_intel_therm_init(void);
 #else
 static inline void mcheck_intel_therm_init(void) { }
 #endif

 /*
  * Used by APEI to report memory error via /dev/mcelog
  */

 struct cper_sec_mem_err;
 extern void apei_mce_report_mem_error(int corrected,
 				      struct cper_sec_mem_err *mem_err);

 #endif /* __KERNEL__ */
 #endif /* _ASM_X86_MCE_H */
	#ifndef _ASM_X86_MCE_H
	#define _ASM_X86_MCE_H

	#include <linux/types.h>
	#include <asm/ioctls.h>

	/*
	* 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 */
	#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)


	#ifdef __KERNEL__

	extern struct atomic_notifier_head x86_mce_decoder_chain;

	#include <linux/percpu.h>
	#include <linux/init.h>
	#include <asm/atomic.h>

	extern int mce_disabled;
	extern int mce_p5_enabled;

	#ifdef CONFIG_X86_MCE
	int mcheck_init(void);
	void mcheck_cpu_init(struct cpuinfo_x86 *c);
	#else
	static inline int mcheck_init(void) { return 0; }
	static inline void mcheck_cpu_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

	extern void (x86_mce_decode_callback)(struct mce m);

	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);

	#ifdef CONFIG_X86_THERMAL_VECTOR
	extern void mcheck_intel_therm_init(void);
	#else
	static inline void mcheck_intel_therm_init(void) { }
	#endif

	/*
	* Used by APEI to report memory error via /dev/mcelog
	*/

	struct cper_sec_mem_err;
	extern void apei_mce_report_mem_error(int corrected,
	struct cper_sec_mem_err *mem_err);

	#endif /* __KERNEL__ */
	#endif /* _ASM_X86_MCE_H */