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 * 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. 13 * 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. 17 * 18 * Copyright 2013 IBM Corporation 19 * Author: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com> 20 */ 21 22 #ifndef __ASM_PPC64_MCE_H__ 23 #define __ASM_PPC64_MCE_H__ 24 25 #include <linux/bitops.h> 26 27 enum MCE_Version { 28 MCE_V1 = 1, 29 }; 30 31 enum MCE_Severity { 32 MCE_SEV_NO_ERROR = 0, 33 MCE_SEV_WARNING = 1, 34 MCE_SEV_SEVERE = 2, 35 MCE_SEV_FATAL = 3, 36 }; 37 38 enum MCE_Disposition { 39 MCE_DISPOSITION_RECOVERED = 0, 40 MCE_DISPOSITION_NOT_RECOVERED = 1, 41 }; 42 43 enum MCE_Initiator { 44 MCE_INITIATOR_UNKNOWN = 0, 45 MCE_INITIATOR_CPU = 1, 46 }; 47 48 enum MCE_ErrorType { 49 MCE_ERROR_TYPE_UNKNOWN = 0, 50 MCE_ERROR_TYPE_UE = 1, 51 MCE_ERROR_TYPE_SLB = 2, 52 MCE_ERROR_TYPE_ERAT = 3, 53 MCE_ERROR_TYPE_TLB = 4, 54 MCE_ERROR_TYPE_USER = 5, 55 MCE_ERROR_TYPE_RA = 6, 56 MCE_ERROR_TYPE_LINK = 7, 57 }; 58 59 enum MCE_ErrorClass { 60 MCE_ECLASS_UNKNOWN = 0, 61 MCE_ECLASS_HARDWARE, 62 MCE_ECLASS_HARD_INDETERMINATE, 63 MCE_ECLASS_SOFTWARE, 64 MCE_ECLASS_SOFT_INDETERMINATE, 65 }; 66 67 enum MCE_UeErrorType { 68 MCE_UE_ERROR_INDETERMINATE = 0, 69 MCE_UE_ERROR_IFETCH = 1, 70 MCE_UE_ERROR_PAGE_TABLE_WALK_IFETCH = 2, 71 MCE_UE_ERROR_LOAD_STORE = 3, 72 MCE_UE_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 4, 73 }; 74 75 enum MCE_SlbErrorType { 76 MCE_SLB_ERROR_INDETERMINATE = 0, 77 MCE_SLB_ERROR_PARITY = 1, 78 MCE_SLB_ERROR_MULTIHIT = 2, 79 }; 80 81 enum MCE_EratErrorType { 82 MCE_ERAT_ERROR_INDETERMINATE = 0, 83 MCE_ERAT_ERROR_PARITY = 1, 84 MCE_ERAT_ERROR_MULTIHIT = 2, 85 }; 86 87 enum MCE_TlbErrorType { 88 MCE_TLB_ERROR_INDETERMINATE = 0, 89 MCE_TLB_ERROR_PARITY = 1, 90 MCE_TLB_ERROR_MULTIHIT = 2, 91 }; 92 93 enum MCE_UserErrorType { 94 MCE_USER_ERROR_INDETERMINATE = 0, 95 MCE_USER_ERROR_TLBIE = 1, 96 }; 97 98 enum MCE_RaErrorType { 99 MCE_RA_ERROR_INDETERMINATE = 0, 100 MCE_RA_ERROR_IFETCH = 1, 101 MCE_RA_ERROR_IFETCH_FOREIGN = 2, 102 MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH = 3, 103 MCE_RA_ERROR_PAGE_TABLE_WALK_IFETCH_FOREIGN = 4, 104 MCE_RA_ERROR_LOAD = 5, 105 MCE_RA_ERROR_STORE = 6, 106 MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE = 7, 107 MCE_RA_ERROR_PAGE_TABLE_WALK_LOAD_STORE_FOREIGN = 8, 108 MCE_RA_ERROR_LOAD_STORE_FOREIGN = 9, 109 }; 110 111 enum MCE_LinkErrorType { 112 MCE_LINK_ERROR_INDETERMINATE = 0, 113 MCE_LINK_ERROR_IFETCH_TIMEOUT = 1, 114 MCE_LINK_ERROR_PAGE_TABLE_WALK_IFETCH_TIMEOUT = 2, 115 MCE_LINK_ERROR_LOAD_TIMEOUT = 3, 116 MCE_LINK_ERROR_STORE_TIMEOUT = 4, 117 MCE_LINK_ERROR_PAGE_TABLE_WALK_LOAD_STORE_TIMEOUT = 5, 118 }; 119 120 struct machine_check_event { 121 enum MCE_Version version:8; 122 u8 in_use; 123 enum MCE_Severity severity:8; 124 enum MCE_Initiator initiator:8; 125 enum MCE_ErrorType error_type:8; 126 enum MCE_ErrorClass error_class:8; 127 enum MCE_Disposition disposition:8; 128 bool sync_error; 129 u16 cpu; 130 u64 gpr3; 131 u64 srr0; 132 u64 srr1; 133 union { 134 struct { 135 enum MCE_UeErrorType ue_error_type:8; 136 u8 effective_address_provided; 137 u8 physical_address_provided; 138 u8 reserved_1[5]; 139 u64 effective_address; 140 u64 physical_address; 141 u8 reserved_2[8]; 142 } ue_error; 143 144 struct { 145 enum MCE_SlbErrorType slb_error_type:8; 146 u8 effective_address_provided; 147 u8 reserved_1[6]; 148 u64 effective_address; 149 u8 reserved_2[16]; 150 } slb_error; 151 152 struct { 153 enum MCE_EratErrorType erat_error_type:8; 154 u8 effective_address_provided; 155 u8 reserved_1[6]; 156 u64 effective_address; 157 u8 reserved_2[16]; 158 } erat_error; 159 160 struct { 161 enum MCE_TlbErrorType tlb_error_type:8; 162 u8 effective_address_provided; 163 u8 reserved_1[6]; 164 u64 effective_address; 165 u8 reserved_2[16]; 166 } tlb_error; 167 168 struct { 169 enum MCE_UserErrorType user_error_type:8; 170 u8 effective_address_provided; 171 u8 reserved_1[6]; 172 u64 effective_address; 173 u8 reserved_2[16]; 174 } user_error; 175 176 struct { 177 enum MCE_RaErrorType ra_error_type:8; 178 u8 effective_address_provided; 179 u8 reserved_1[6]; 180 u64 effective_address; 181 u8 reserved_2[16]; 182 } ra_error; 183 184 struct { 185 enum MCE_LinkErrorType link_error_type:8; 186 u8 effective_address_provided; 187 u8 reserved_1[6]; 188 u64 effective_address; 189 u8 reserved_2[16]; 190 } link_error; 191 } u; 192 }; 193 194 struct mce_error_info { 195 enum MCE_ErrorType error_type:8; 196 union { 197 enum MCE_UeErrorType ue_error_type:8; 198 enum MCE_SlbErrorType slb_error_type:8; 199 enum MCE_EratErrorType erat_error_type:8; 200 enum MCE_TlbErrorType tlb_error_type:8; 201 enum MCE_UserErrorType user_error_type:8; 202 enum MCE_RaErrorType ra_error_type:8; 203 enum MCE_LinkErrorType link_error_type:8; 204 } u; 205 enum MCE_Severity severity:8; 206 enum MCE_Initiator initiator:8; 207 enum MCE_ErrorClass error_class:8; 208 bool sync_error; 209 }; 210 211 #define MAX_MC_EVT 100 212 213 /* Release flags for get_mce_event() */ 214 #define MCE_EVENT_RELEASE true 215 #define MCE_EVENT_DONTRELEASE false 216 217 extern void save_mce_event(struct pt_regs *regs, long handled, 218 struct mce_error_info *mce_err, uint64_t nip, 219 uint64_t addr, uint64_t phys_addr); 220 extern int get_mce_event(struct machine_check_event *mce, bool release); 221 extern void release_mce_event(void); 222 extern void machine_check_queue_event(void); 223 extern void machine_check_print_event_info(struct machine_check_event *evt, 224 bool user_mode, bool in_guest); 225 unsigned long addr_to_pfn(struct pt_regs *regs, unsigned long addr); 226 #ifdef CONFIG_PPC_BOOK3S_64 227 void flush_and_reload_slb(void); 228 #endif /* CONFIG_PPC_BOOK3S_64 */ 229 #endif /* __ASM_PPC64_MCE_H__ */ 230