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1965aae3 PA |
1 | #ifndef _ASM_X86_MCE_H |
2 | #define _ASM_X86_MCE_H | |
e2f43029 | 3 | |
999b697b | 4 | #include <linux/types.h> |
e2f43029 | 5 | #include <asm/ioctls.h> |
e2f43029 TG |
6 | |
7 | /* | |
8 | * Machine Check support for x86 | |
9 | */ | |
10 | ||
01c6680a | 11 | #define MCG_BANKCNT_MASK 0xff /* Number of Banks */ |
e4876839 | 12 | #define MCG_CTL_P (1ULL<<8) /* MCG_CTL register available */ |
01c6680a TG |
13 | #define MCG_EXT_P (1ULL<<9) /* Extended registers available */ |
14 | #define MCG_CMCI_P (1ULL<<10) /* CMCI supported */ | |
15 | #define MCG_EXT_CNT_MASK 0xff0000 /* Number of Extended registers */ | |
16 | #define MCG_EXT_CNT_SHIFT 16 | |
17 | #define MCG_EXT_CNT(c) (((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT) | |
ed7290d0 | 18 | #define MCG_SER_P (1ULL<<24) /* MCA recovery/new status bits */ |
e2f43029 | 19 | |
06b851d9 IM |
20 | #define MCG_STATUS_RIPV (1ULL<<0) /* restart ip valid */ |
21 | #define MCG_STATUS_EIPV (1ULL<<1) /* ip points to correct instruction */ | |
22 | #define MCG_STATUS_MCIP (1ULL<<2) /* machine check in progress */ | |
e2f43029 | 23 | |
06b851d9 IM |
24 | #define MCI_STATUS_VAL (1ULL<<63) /* valid error */ |
25 | #define MCI_STATUS_OVER (1ULL<<62) /* previous errors lost */ | |
26 | #define MCI_STATUS_UC (1ULL<<61) /* uncorrected error */ | |
27 | #define MCI_STATUS_EN (1ULL<<60) /* error enabled */ | |
28 | #define MCI_STATUS_MISCV (1ULL<<59) /* misc error reg. valid */ | |
29 | #define MCI_STATUS_ADDRV (1ULL<<58) /* addr reg. valid */ | |
30 | #define MCI_STATUS_PCC (1ULL<<57) /* processor context corrupt */ | |
ed7290d0 AK |
31 | #define MCI_STATUS_S (1ULL<<56) /* Signaled machine check */ |
32 | #define MCI_STATUS_AR (1ULL<<55) /* Action required */ | |
33 | ||
34 | /* MISC register defines */ | |
35 | #define MCM_ADDR_SEGOFF 0 /* segment offset */ | |
36 | #define MCM_ADDR_LINEAR 1 /* linear address */ | |
37 | #define MCM_ADDR_PHYS 2 /* physical address */ | |
38 | #define MCM_ADDR_MEM 3 /* memory address */ | |
39 | #define MCM_ADDR_GENERIC 7 /* generic */ | |
e2f43029 | 40 | |
5b7e88ed HY |
41 | #define MCJ_CTX_MASK 3 |
42 | #define MCJ_CTX(flags) ((flags) & MCJ_CTX_MASK) | |
43 | #define MCJ_CTX_RANDOM 0 /* inject context: random */ | |
44 | #define MCJ_CTX_PROCESS 1 /* inject context: process */ | |
45 | #define MCJ_CTX_IRQ 2 /* inject context: IRQ */ | |
46 | #define MCJ_NMI_BROADCAST 4 /* do NMI broadcasting */ | |
0dcc6685 | 47 | #define MCJ_EXCEPTION 8 /* raise as exception */ |
5b7e88ed | 48 | |
e2f43029 TG |
49 | /* Fields are zero when not available */ |
50 | struct mce { | |
51 | __u64 status; | |
52 | __u64 misc; | |
53 | __u64 addr; | |
54 | __u64 mcgstatus; | |
65ea5b03 | 55 | __u64 ip; |
e2f43029 | 56 | __u64 tsc; /* cpu time stamp counter */ |
8ee08347 AK |
57 | __u64 time; /* wall time_t when error was detected */ |
58 | __u8 cpuvendor; /* cpu vendor as encoded in system.h */ | |
5b7e88ed HY |
59 | __u8 inject_flags; /* software inject flags */ |
60 | __u16 pad; | |
8ee08347 | 61 | __u32 cpuid; /* CPUID 1 EAX */ |
e2f43029 TG |
62 | __u8 cs; /* code segment */ |
63 | __u8 bank; /* machine check bank */ | |
d620c67f | 64 | __u8 cpu; /* cpu number; obsolete; use extcpu now */ |
e2f43029 | 65 | __u8 finished; /* entry is valid */ |
d620c67f | 66 | __u32 extcpu; /* linux cpu number that detected the error */ |
8ee08347 AK |
67 | __u32 socketid; /* CPU socket ID */ |
68 | __u32 apicid; /* CPU initial apic ID */ | |
69 | __u64 mcgcap; /* MCGCAP MSR: machine check capabilities of CPU */ | |
e2f43029 TG |
70 | }; |
71 | ||
72 | /* | |
73 | * This structure contains all data related to the MCE log. Also | |
74 | * carries a signature to make it easier to find from external | |
75 | * debugging tools. Each entry is only valid when its finished flag | |
76 | * is set. | |
77 | */ | |
78 | ||
79 | #define MCE_LOG_LEN 32 | |
80 | ||
81 | struct mce_log { | |
82 | char signature[12]; /* "MACHINECHECK" */ | |
83 | unsigned len; /* = MCE_LOG_LEN */ | |
84 | unsigned next; | |
85 | unsigned flags; | |
f6fb0ac0 | 86 | unsigned recordlen; /* length of struct mce */ |
e2f43029 TG |
87 | struct mce entry[MCE_LOG_LEN]; |
88 | }; | |
89 | ||
90 | #define MCE_OVERFLOW 0 /* bit 0 in flags means overflow */ | |
91 | ||
92 | #define MCE_LOG_SIGNATURE "MACHINECHECK" | |
93 | ||
94 | #define MCE_GET_RECORD_LEN _IOR('M', 1, int) | |
95 | #define MCE_GET_LOG_LEN _IOR('M', 2, int) | |
96 | #define MCE_GETCLEAR_FLAGS _IOR('M', 3, int) | |
97 | ||
98 | /* Software defined banks */ | |
99 | #define MCE_EXTENDED_BANK 128 | |
100 | #define MCE_THERMAL_BANK MCE_EXTENDED_BANK + 0 | |
101 | ||
102 | #define K8_MCE_THRESHOLD_BASE (MCE_EXTENDED_BANK + 1) /* MCE_AMD */ | |
103 | #define K8_MCE_THRESHOLD_BANK_0 (MCE_THRESHOLD_BASE + 0 * 9) | |
104 | #define K8_MCE_THRESHOLD_BANK_1 (MCE_THRESHOLD_BASE + 1 * 9) | |
105 | #define K8_MCE_THRESHOLD_BANK_2 (MCE_THRESHOLD_BASE + 2 * 9) | |
106 | #define K8_MCE_THRESHOLD_BANK_3 (MCE_THRESHOLD_BASE + 3 * 9) | |
107 | #define K8_MCE_THRESHOLD_BANK_4 (MCE_THRESHOLD_BASE + 4 * 9) | |
108 | #define K8_MCE_THRESHOLD_BANK_5 (MCE_THRESHOLD_BASE + 5 * 9) | |
109 | #define K8_MCE_THRESHOLD_DRAM_ECC (MCE_THRESHOLD_BANK_4 + 0) | |
110 | ||
fb253195 | 111 | |
e2f43029 TG |
112 | #ifdef __KERNEL__ |
113 | ||
df39a2e4 AC |
114 | extern struct atomic_notifier_head x86_mce_decoder_chain; |
115 | ||
9e55e44e HS |
116 | #include <linux/percpu.h> |
117 | #include <linux/init.h> | |
118 | #include <asm/atomic.h> | |
119 | ||
e2f43029 | 120 | extern int mce_disabled; |
c6978369 | 121 | extern int mce_p5_enabled; |
e2f43029 | 122 | |
58995d2d | 123 | #ifdef CONFIG_X86_MCE |
a2202aa2 | 124 | int mcheck_init(void); |
5e09954a | 125 | void mcheck_cpu_init(struct cpuinfo_x86 *c); |
58995d2d | 126 | #else |
a2202aa2 | 127 | static inline int mcheck_init(void) { return 0; } |
5e09954a | 128 | static inline void mcheck_cpu_init(struct cpuinfo_x86 *c) {} |
58995d2d HS |
129 | #endif |
130 | ||
9e55e44e HS |
131 | #ifdef CONFIG_X86_ANCIENT_MCE |
132 | void intel_p5_mcheck_init(struct cpuinfo_x86 *c); | |
133 | void winchip_mcheck_init(struct cpuinfo_x86 *c); | |
c6978369 | 134 | static inline void enable_p5_mce(void) { mce_p5_enabled = 1; } |
9e55e44e HS |
135 | #else |
136 | static inline void intel_p5_mcheck_init(struct cpuinfo_x86 *c) {} | |
137 | static inline void winchip_mcheck_init(struct cpuinfo_x86 *c) {} | |
c6978369 | 138 | static inline void enable_p5_mce(void) {} |
9e55e44e HS |
139 | #endif |
140 | ||
f436f8bb IM |
141 | extern void (*x86_mce_decode_callback)(struct mce *m); |
142 | ||
b5f2fa4e | 143 | void mce_setup(struct mce *m); |
e2f43029 | 144 | void mce_log(struct mce *m); |
cb491fca | 145 | DECLARE_PER_CPU(struct sys_device, mce_dev); |
e2f43029 | 146 | |
41fdff32 | 147 | /* |
3ccdccfa AK |
148 | * Maximum banks number. |
149 | * This is the limit of the current register layout on | |
150 | * Intel CPUs. | |
41fdff32 | 151 | */ |
3ccdccfa | 152 | #define MAX_NR_BANKS 32 |
41fdff32 | 153 | |
e2f43029 | 154 | #ifdef CONFIG_X86_MCE_INTEL |
62fdac59 HS |
155 | extern int mce_cmci_disabled; |
156 | extern int mce_ignore_ce; | |
e2f43029 | 157 | void mce_intel_feature_init(struct cpuinfo_x86 *c); |
88ccbedd AK |
158 | void cmci_clear(void); |
159 | void cmci_reenable(void); | |
160 | void cmci_rediscover(int dying); | |
161 | void cmci_recheck(void); | |
e2f43029 TG |
162 | #else |
163 | static inline void mce_intel_feature_init(struct cpuinfo_x86 *c) { } | |
88ccbedd AK |
164 | static inline void cmci_clear(void) {} |
165 | static inline void cmci_reenable(void) {} | |
166 | static inline void cmci_rediscover(int dying) {} | |
167 | static inline void cmci_recheck(void) {} | |
e2f43029 TG |
168 | #endif |
169 | ||
170 | #ifdef CONFIG_X86_MCE_AMD | |
171 | void mce_amd_feature_init(struct cpuinfo_x86 *c); | |
172 | #else | |
173 | static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { } | |
174 | #endif | |
175 | ||
38736072 | 176 | int mce_available(struct cpuinfo_x86 *c); |
88ccbedd | 177 | |
01ca79f1 | 178 | DECLARE_PER_CPU(unsigned, mce_exception_count); |
ca84f696 | 179 | DECLARE_PER_CPU(unsigned, mce_poll_count); |
01ca79f1 | 180 | |
e2f43029 TG |
181 | extern atomic_t mce_entry; |
182 | ||
ee031c31 AK |
183 | typedef DECLARE_BITMAP(mce_banks_t, MAX_NR_BANKS); |
184 | DECLARE_PER_CPU(mce_banks_t, mce_poll_banks); | |
185 | ||
b79109c3 AK |
186 | enum mcp_flags { |
187 | MCP_TIMESTAMP = (1 << 0), /* log time stamp */ | |
188 | MCP_UC = (1 << 1), /* log uncorrected errors */ | |
5679af4c | 189 | MCP_DONTLOG = (1 << 2), /* only clear, don't log */ |
b79109c3 | 190 | }; |
38736072 | 191 | void machine_check_poll(enum mcp_flags flags, mce_banks_t *b); |
b79109c3 | 192 | |
9ff36ee9 | 193 | int mce_notify_irq(void); |
9b1beaf2 | 194 | void mce_notify_process(void); |
e2f43029 | 195 | |
ea149b36 AK |
196 | DECLARE_PER_CPU(struct mce, injectm); |
197 | extern struct file_operations mce_chrdev_ops; | |
198 | ||
58995d2d HS |
199 | /* |
200 | * Exception handler | |
201 | */ | |
202 | ||
203 | /* Call the installed machine check handler for this CPU setup. */ | |
204 | extern void (*machine_check_vector)(struct pt_regs *, long error_code); | |
205 | void do_machine_check(struct pt_regs *, long); | |
206 | ||
207 | /* | |
208 | * Threshold handler | |
209 | */ | |
e2f43029 | 210 | |
b2762686 | 211 | extern void (*mce_threshold_vector)(void); |
58995d2d | 212 | extern void (*threshold_cpu_callback)(unsigned long action, unsigned int cpu); |
b2762686 | 213 | |
e8ce2c5e HS |
214 | /* |
215 | * Thermal handler | |
216 | */ | |
217 | ||
e8ce2c5e HS |
218 | void intel_init_thermal(struct cpuinfo_x86 *c); |
219 | ||
e8ce2c5e | 220 | void mce_log_therm_throt_event(__u64 status); |
a2202aa2 YW |
221 | |
222 | #ifdef CONFIG_X86_THERMAL_VECTOR | |
223 | extern void mcheck_intel_therm_init(void); | |
224 | #else | |
225 | static inline void mcheck_intel_therm_init(void) { } | |
226 | #endif | |
227 | ||
e2f43029 | 228 | #endif /* __KERNEL__ */ |
1965aae3 | 229 | #endif /* _ASM_X86_MCE_H */ |