2 * Machine check exception header file.
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.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18 * Copyright 2013 IBM Corporation
19 * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
22 #ifndef __ASM_PPC64_MCE_H__
23 #define __ASM_PPC64_MCE_H__
25 #include <linux/bitops.h>
28 * Machine Check bits on power7 and power8
30 #define P7_SRR1_MC_LOADSTORE(srr1) ((srr1) & PPC_BIT(42)) /* P8 too */
32 /* SRR1 bits for machine check (On Power7 and Power8) */
33 #define P7_SRR1_MC_IFETCH(srr1) ((srr1) & PPC_BITMASK(43, 45)) /* P8 too */
35 #define P7_SRR1_MC_IFETCH_UE (0x1 << PPC_BITLSHIFT(45)) /* P8 too */
36 #define P7_SRR1_MC_IFETCH_SLB_PARITY (0x2 << PPC_BITLSHIFT(45)) /* P8 too */
37 #define P7_SRR1_MC_IFETCH_SLB_MULTIHIT (0x3 << PPC_BITLSHIFT(45)) /* P8 too */
38 #define P7_SRR1_MC_IFETCH_SLB_BOTH (0x4 << PPC_BITLSHIFT(45))
39 #define P7_SRR1_MC_IFETCH_TLB_MULTIHIT (0x5 << PPC_BITLSHIFT(45)) /* P8 too */
40 #define P7_SRR1_MC_IFETCH_UE_TLB_RELOAD (0x6 << PPC_BITLSHIFT(45)) /* P8 too */
41 #define P7_SRR1_MC_IFETCH_UE_IFU_INTERNAL (0x7 << PPC_BITLSHIFT(45))
43 /* SRR1 bits for machine check (On Power8) */
44 #define P8_SRR1_MC_IFETCH_ERAT_MULTIHIT (0x4 << PPC_BITLSHIFT(45))
46 /* DSISR bits for machine check (On Power7 and Power8) */
47 #define P7_DSISR_MC_UE (PPC_BIT(48)) /* P8 too */
48 #define P7_DSISR_MC_UE_TABLEWALK (PPC_BIT(49)) /* P8 too */
49 #define P7_DSISR_MC_ERAT_MULTIHIT (PPC_BIT(52)) /* P8 too */
50 #define P7_DSISR_MC_TLB_MULTIHIT_MFTLB (PPC_BIT(53)) /* P8 too */
51 #define P7_DSISR_MC_SLB_PARITY_MFSLB (PPC_BIT(55)) /* P8 too */
52 #define P7_DSISR_MC_SLB_MULTIHIT (PPC_BIT(56)) /* P8 too */
53 #define P7_DSISR_MC_SLB_MULTIHIT_PARITY (PPC_BIT(57)) /* P8 too */
56 * DSISR bits for machine check (Power8) in addition to above.
57 * Secondary DERAT Multihit
59 #define P8_DSISR_MC_ERAT_MULTIHIT_SEC (PPC_BIT(54))
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)
67 #define P8_DSISR_MC_SLB_ERRORS (P7_DSISR_MC_SLB_ERRORS | \
68 P8_DSISR_MC_ERAT_MULTIHIT_SEC)
76 MCE_SEV_ERROR_SYNC = 2,
80 enum MCE_Disposition {
81 MCE_DISPOSITION_RECOVERED = 0,
82 MCE_DISPOSITION_NOT_RECOVERED = 1,
86 MCE_INITIATOR_UNKNOWN = 0,
87 MCE_INITIATOR_CPU = 1,
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,
98 enum 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,
106 enum MCE_SlbErrorType {
107 MCE_SLB_ERROR_INDETERMINATE = 0,
108 MCE_SLB_ERROR_PARITY = 1,
109 MCE_SLB_ERROR_MULTIHIT = 2,
112 enum MCE_EratErrorType {
113 MCE_ERAT_ERROR_INDETERMINATE = 0,
114 MCE_ERAT_ERROR_PARITY = 1,
115 MCE_ERAT_ERROR_MULTIHIT = 2,
118 enum MCE_TlbErrorType {
119 MCE_TLB_ERROR_INDETERMINATE = 0,
120 MCE_TLB_ERROR_PARITY = 1,
121 MCE_TLB_ERROR_MULTIHIT = 2,
124 struct 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 */
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];
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];
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];
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];
172 struct mce_error_info {
173 enum MCE_ErrorType error_type:8;
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;
183 #define MAX_MC_EVT 100
185 /* Release flags for get_mce_event() */
186 #define MCE_EVENT_RELEASE true
187 #define MCE_EVENT_DONTRELEASE false
189 extern void save_mce_event(struct pt_regs *regs, long handled,
190 struct mce_error_info *mce_err, uint64_t nip,
192 extern int get_mce_event(struct machine_check_event *mce, bool release);
193 extern void release_mce_event(void);
194 extern void machine_check_queue_event(void);
195 extern void machine_check_print_event_info(struct machine_check_event *evt);
196 extern uint64_t get_mce_fault_addr(struct machine_check_event *evt);
198 #endif /* __ASM_PPC64_MCE_H__ */