mce.h (ae744f3432d3872c51298d922728e13c24ccc068) mce.h (36df96f8acaf51992177645eb2d781f766ce97dc)
1/*
2 * Machine check exception header file.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

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61/* SLB error bits */
62#define P7_DSISR_MC_SLB_ERRORS (P7_DSISR_MC_ERAT_MULTIHIT | \
63 P7_DSISR_MC_SLB_PARITY_MFSLB | \
64 P7_DSISR_MC_SLB_MULTIHIT | \
65 P7_DSISR_MC_SLB_MULTIHIT_PARITY)
66
67#define P8_DSISR_MC_SLB_ERRORS (P7_DSISR_MC_SLB_ERRORS | \
68 P8_DSISR_MC_ERAT_MULTIHIT_SEC)
1/*
2 * Machine check exception header file.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *

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61/* SLB error bits */
62#define P7_DSISR_MC_SLB_ERRORS (P7_DSISR_MC_ERAT_MULTIHIT | \
63 P7_DSISR_MC_SLB_PARITY_MFSLB | \
64 P7_DSISR_MC_SLB_MULTIHIT | \
65 P7_DSISR_MC_SLB_MULTIHIT_PARITY)
66
67#define P8_DSISR_MC_SLB_ERRORS (P7_DSISR_MC_SLB_ERRORS | \
68 P8_DSISR_MC_ERAT_MULTIHIT_SEC)
69enum MCE_Version {
70 MCE_V1 = 1,
71};
69
72
73enum MCE_Severity {
74 MCE_SEV_NO_ERROR = 0,
75 MCE_SEV_WARNING = 1,
76 MCE_SEV_ERROR_SYNC = 2,
77 MCE_SEV_FATAL = 3,
78};
79
80enum MCE_Disposition {
81 MCE_DISPOSITION_RECOVERED = 0,
82 MCE_DISPOSITION_NOT_RECOVERED = 1,
83};
84
85enum MCE_Initiator {
86 MCE_INITIATOR_UNKNOWN = 0,
87 MCE_INITIATOR_CPU = 1,
88};
89
90enum MCE_ErrorType {
91 MCE_ERROR_TYPE_UNKNOWN = 0,
92 MCE_ERROR_TYPE_UE = 1,
93 MCE_ERROR_TYPE_SLB = 2,
94 MCE_ERROR_TYPE_ERAT = 3,
95 MCE_ERROR_TYPE_TLB = 4,
96};
97
98enum MCE_UeErrorType {
99 MCE_UE_ERROR_INDETERMINATE = 0,
100 MCE_UE_ERROR_IFETCH = 1,
101 MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2,
102 MCE_UE_ERROR_LOAD_STORE = 3,
103 MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4,
104};
105
106enum MCE_SlbErrorType {
107 MCE_SLB_ERROR_INDETERMINATE = 0,
108 MCE_SLB_ERROR_PARITY = 1,
109 MCE_SLB_ERROR_MULTIHIT = 2,
110};
111
112enum MCE_EratErrorType {
113 MCE_ERAT_ERROR_INDETERMINATE = 0,
114 MCE_ERAT_ERROR_PARITY = 1,
115 MCE_ERAT_ERROR_MULTIHIT = 2,
116};
117
118enum MCE_TlbErrorType {
119 MCE_TLB_ERROR_INDETERMINATE = 0,
120 MCE_TLB_ERROR_PARITY = 1,
121 MCE_TLB_ERROR_MULTIHIT = 2,
122};
123
124struct machine_check_event {
125 enum MCE_Version version:8; /* 0x00 */
126 uint8_t in_use; /* 0x01 */
127 enum MCE_Severity severity:8; /* 0x02 */
128 enum MCE_Initiator initiator:8; /* 0x03 */
129 enum MCE_ErrorType error_type:8; /* 0x04 */
130 enum MCE_Disposition disposition:8; /* 0x05 */
131 uint8_t reserved_1[2]; /* 0x06 */
132 uint64_t gpr3; /* 0x08 */
133 uint64_t srr0; /* 0x10 */
134 uint64_t srr1; /* 0x18 */
135 union { /* 0x20 */
136 struct {
137 enum MCE_UeErrorType ue_error_type:8;
138 uint8_t effective_address_provided;
139 uint8_t physical_address_provided;
140 uint8_t reserved_1[5];
141 uint64_t effective_address;
142 uint64_t physical_address;
143 uint8_t reserved_2[8];
144 } ue_error;
145
146 struct {
147 enum MCE_SlbErrorType slb_error_type:8;
148 uint8_t effective_address_provided;
149 uint8_t reserved_1[6];
150 uint64_t effective_address;
151 uint8_t reserved_2[16];
152 } slb_error;
153
154 struct {
155 enum MCE_EratErrorType erat_error_type:8;
156 uint8_t effective_address_provided;
157 uint8_t reserved_1[6];
158 uint64_t effective_address;
159 uint8_t reserved_2[16];
160 } erat_error;
161
162 struct {
163 enum MCE_TlbErrorType tlb_error_type:8;
164 uint8_t effective_address_provided;
165 uint8_t reserved_1[6];
166 uint64_t effective_address;
167 uint8_t reserved_2[16];
168 } tlb_error;
169 } u;
170};
171
172struct mce_error_info {
173 enum MCE_ErrorType error_type:8;
174 union {
175 enum MCE_UeErrorType ue_error_type:8;
176 enum MCE_SlbErrorType slb_error_type:8;
177 enum MCE_EratErrorType erat_error_type:8;
178 enum MCE_TlbErrorType tlb_error_type:8;
179 } u;
180 uint8_t reserved[2];
181};
182
183#define MAX_MC_EVT 100
184
185/* Release flags for get_mce_event() */
186#define MCE_EVENT_RELEASE true
187#define MCE_EVENT_DONTRELEASE false
188
189extern void save_mce_event(struct pt_regs *regs, long handled,
190 struct mce_error_info *mce_err, uint64_t addr);
191extern int get_mce_event(struct machine_check_event *mce, bool release);
192extern void release_mce_event(void);
193
70#endif /* __ASM_PPC64_MCE_H__ */
194#endif /* __ASM_PPC64_MCE_H__ */