Huang Ying | 06d65de | 2010-05-18 14:35:19 +0800 | [diff] [blame] | 1 | /* |
| 2 | * UEFI Common Platform Error Record (CPER) support |
| 3 | * |
| 4 | * Copyright (C) 2010, Intel Corp. |
| 5 | * Author: Huang Ying <ying.huang@intel.com> |
| 6 | * |
| 7 | * CPER is the format used to describe platform hardware error by |
| 8 | * various APEI tables, such as ERST, BERT and HEST etc. |
| 9 | * |
| 10 | * For more information about CPER, please refer to Appendix N of UEFI |
| 11 | * Specification version 2.3. |
| 12 | * |
| 13 | * This program is free software; you can redistribute it and/or |
| 14 | * modify it under the terms of the GNU General Public License version |
| 15 | * 2 as published by the Free Software Foundation. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/time.h> |
| 30 | #include <linux/cper.h> |
| 31 | #include <linux/acpi.h> |
Lance Ortiz | 1d52100 | 2013-01-03 15:34:08 -0700 | [diff] [blame] | 32 | #include <linux/pci.h> |
Huang Ying | c413d76 | 2011-02-21 13:54:43 +0800 | [diff] [blame] | 33 | #include <linux/aer.h> |
Huang Ying | 06d65de | 2010-05-18 14:35:19 +0800 | [diff] [blame] | 34 | |
| 35 | /* |
| 36 | * CPER record ID need to be unique even after reboot, because record |
| 37 | * ID is used as index for ERST storage, while CPER records from |
| 38 | * multiple boot may co-exist in ERST. |
| 39 | */ |
| 40 | u64 cper_next_record_id(void) |
| 41 | { |
| 42 | static atomic64_t seq; |
| 43 | |
| 44 | if (!atomic64_read(&seq)) |
| 45 | atomic64_set(&seq, ((u64)get_seconds()) << 32); |
| 46 | |
| 47 | return atomic64_inc_return(&seq); |
| 48 | } |
| 49 | EXPORT_SYMBOL_GPL(cper_next_record_id); |
| 50 | |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 51 | static const char *cper_severity_strs[] = { |
| 52 | "recoverable", |
| 53 | "fatal", |
| 54 | "corrected", |
| 55 | "info", |
| 56 | }; |
| 57 | |
| 58 | static const char *cper_severity_str(unsigned int severity) |
| 59 | { |
| 60 | return severity < ARRAY_SIZE(cper_severity_strs) ? |
| 61 | cper_severity_strs[severity] : "unknown"; |
| 62 | } |
| 63 | |
| 64 | /* |
| 65 | * cper_print_bits - print strings for set bits |
| 66 | * @pfx: prefix for each line, including log level and prefix string |
| 67 | * @bits: bit mask |
| 68 | * @strs: string array, indexed by bit position |
| 69 | * @strs_size: size of the string array: @strs |
| 70 | * |
| 71 | * For each set bit in @bits, print the corresponding string in @strs. |
| 72 | * If the output length is longer than 80, multiple line will be |
| 73 | * printed, with @pfx is printed at the beginning of each line. |
| 74 | */ |
Huang Ying | c413d76 | 2011-02-21 13:54:43 +0800 | [diff] [blame] | 75 | void cper_print_bits(const char *pfx, unsigned int bits, |
| 76 | const char *strs[], unsigned int strs_size) |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 77 | { |
| 78 | int i, len = 0; |
| 79 | const char *str; |
| 80 | char buf[84]; |
| 81 | |
| 82 | for (i = 0; i < strs_size; i++) { |
| 83 | if (!(bits & (1U << i))) |
| 84 | continue; |
| 85 | str = strs[i]; |
Huang Ying | c413d76 | 2011-02-21 13:54:43 +0800 | [diff] [blame] | 86 | if (!str) |
| 87 | continue; |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 88 | if (len && len + strlen(str) + 2 > 80) { |
| 89 | printk("%s\n", buf); |
| 90 | len = 0; |
| 91 | } |
| 92 | if (!len) |
| 93 | len = snprintf(buf, sizeof(buf), "%s%s", pfx, str); |
| 94 | else |
| 95 | len += snprintf(buf+len, sizeof(buf)-len, ", %s", str); |
| 96 | } |
| 97 | if (len) |
| 98 | printk("%s\n", buf); |
| 99 | } |
| 100 | |
| 101 | static const char *cper_proc_type_strs[] = { |
| 102 | "IA32/X64", |
| 103 | "IA64", |
| 104 | }; |
| 105 | |
| 106 | static const char *cper_proc_isa_strs[] = { |
| 107 | "IA32", |
| 108 | "IA64", |
| 109 | "X64", |
| 110 | }; |
| 111 | |
| 112 | static const char *cper_proc_error_type_strs[] = { |
| 113 | "cache error", |
| 114 | "TLB error", |
| 115 | "bus error", |
| 116 | "micro-architectural error", |
| 117 | }; |
| 118 | |
| 119 | static const char *cper_proc_op_strs[] = { |
| 120 | "unknown or generic", |
| 121 | "data read", |
| 122 | "data write", |
| 123 | "instruction execution", |
| 124 | }; |
| 125 | |
| 126 | static const char *cper_proc_flag_strs[] = { |
| 127 | "restartable", |
| 128 | "precise IP", |
| 129 | "overflow", |
| 130 | "corrected", |
| 131 | }; |
| 132 | |
| 133 | static void cper_print_proc_generic(const char *pfx, |
| 134 | const struct cper_sec_proc_generic *proc) |
| 135 | { |
| 136 | if (proc->validation_bits & CPER_PROC_VALID_TYPE) |
| 137 | printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type, |
| 138 | proc->proc_type < ARRAY_SIZE(cper_proc_type_strs) ? |
| 139 | cper_proc_type_strs[proc->proc_type] : "unknown"); |
| 140 | if (proc->validation_bits & CPER_PROC_VALID_ISA) |
| 141 | printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa, |
| 142 | proc->proc_isa < ARRAY_SIZE(cper_proc_isa_strs) ? |
| 143 | cper_proc_isa_strs[proc->proc_isa] : "unknown"); |
| 144 | if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) { |
| 145 | printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type); |
| 146 | cper_print_bits(pfx, proc->proc_error_type, |
| 147 | cper_proc_error_type_strs, |
| 148 | ARRAY_SIZE(cper_proc_error_type_strs)); |
| 149 | } |
| 150 | if (proc->validation_bits & CPER_PROC_VALID_OPERATION) |
| 151 | printk("%s""operation: %d, %s\n", pfx, proc->operation, |
| 152 | proc->operation < ARRAY_SIZE(cper_proc_op_strs) ? |
| 153 | cper_proc_op_strs[proc->operation] : "unknown"); |
| 154 | if (proc->validation_bits & CPER_PROC_VALID_FLAGS) { |
| 155 | printk("%s""flags: 0x%02x\n", pfx, proc->flags); |
| 156 | cper_print_bits(pfx, proc->flags, cper_proc_flag_strs, |
| 157 | ARRAY_SIZE(cper_proc_flag_strs)); |
| 158 | } |
| 159 | if (proc->validation_bits & CPER_PROC_VALID_LEVEL) |
| 160 | printk("%s""level: %d\n", pfx, proc->level); |
| 161 | if (proc->validation_bits & CPER_PROC_VALID_VERSION) |
| 162 | printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version); |
| 163 | if (proc->validation_bits & CPER_PROC_VALID_ID) |
| 164 | printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id); |
| 165 | if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS) |
| 166 | printk("%s""target_address: 0x%016llx\n", |
| 167 | pfx, proc->target_addr); |
| 168 | if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID) |
| 169 | printk("%s""requestor_id: 0x%016llx\n", |
| 170 | pfx, proc->requestor_id); |
| 171 | if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID) |
| 172 | printk("%s""responder_id: 0x%016llx\n", |
| 173 | pfx, proc->responder_id); |
| 174 | if (proc->validation_bits & CPER_PROC_VALID_IP) |
| 175 | printk("%s""IP: 0x%016llx\n", pfx, proc->ip); |
| 176 | } |
| 177 | |
| 178 | static const char *cper_mem_err_type_strs[] = { |
| 179 | "unknown", |
| 180 | "no error", |
| 181 | "single-bit ECC", |
| 182 | "multi-bit ECC", |
| 183 | "single-symbol chipkill ECC", |
| 184 | "multi-symbol chipkill ECC", |
| 185 | "master abort", |
| 186 | "target abort", |
| 187 | "parity error", |
| 188 | "watchdog timeout", |
| 189 | "invalid address", |
| 190 | "mirror Broken", |
| 191 | "memory sparing", |
| 192 | "scrub corrected error", |
| 193 | "scrub uncorrected error", |
| 194 | }; |
| 195 | |
| 196 | static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem) |
| 197 | { |
| 198 | if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS) |
| 199 | printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status); |
| 200 | if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS) |
| 201 | printk("%s""physical_address: 0x%016llx\n", |
| 202 | pfx, mem->physical_addr); |
| 203 | if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK) |
| 204 | printk("%s""physical_address_mask: 0x%016llx\n", |
| 205 | pfx, mem->physical_addr_mask); |
| 206 | if (mem->validation_bits & CPER_MEM_VALID_NODE) |
| 207 | printk("%s""node: %d\n", pfx, mem->node); |
| 208 | if (mem->validation_bits & CPER_MEM_VALID_CARD) |
| 209 | printk("%s""card: %d\n", pfx, mem->card); |
| 210 | if (mem->validation_bits & CPER_MEM_VALID_MODULE) |
| 211 | printk("%s""module: %d\n", pfx, mem->module); |
| 212 | if (mem->validation_bits & CPER_MEM_VALID_BANK) |
| 213 | printk("%s""bank: %d\n", pfx, mem->bank); |
| 214 | if (mem->validation_bits & CPER_MEM_VALID_DEVICE) |
| 215 | printk("%s""device: %d\n", pfx, mem->device); |
| 216 | if (mem->validation_bits & CPER_MEM_VALID_ROW) |
| 217 | printk("%s""row: %d\n", pfx, mem->row); |
| 218 | if (mem->validation_bits & CPER_MEM_VALID_COLUMN) |
| 219 | printk("%s""column: %d\n", pfx, mem->column); |
| 220 | if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION) |
| 221 | printk("%s""bit_position: %d\n", pfx, mem->bit_pos); |
| 222 | if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID) |
| 223 | printk("%s""requestor_id: 0x%016llx\n", pfx, mem->requestor_id); |
| 224 | if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID) |
| 225 | printk("%s""responder_id: 0x%016llx\n", pfx, mem->responder_id); |
| 226 | if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID) |
| 227 | printk("%s""target_id: 0x%016llx\n", pfx, mem->target_id); |
| 228 | if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) { |
| 229 | u8 etype = mem->error_type; |
| 230 | printk("%s""error_type: %d, %s\n", pfx, etype, |
| 231 | etype < ARRAY_SIZE(cper_mem_err_type_strs) ? |
| 232 | cper_mem_err_type_strs[etype] : "unknown"); |
| 233 | } |
| 234 | } |
| 235 | |
| 236 | static const char *cper_pcie_port_type_strs[] = { |
| 237 | "PCIe end point", |
| 238 | "legacy PCI end point", |
| 239 | "unknown", |
| 240 | "unknown", |
| 241 | "root port", |
| 242 | "upstream switch port", |
| 243 | "downstream switch port", |
| 244 | "PCIe to PCI/PCI-X bridge", |
| 245 | "PCI/PCI-X to PCIe bridge", |
| 246 | "root complex integrated endpoint device", |
| 247 | "root complex event collector", |
| 248 | }; |
| 249 | |
Huang Ying | c413d76 | 2011-02-21 13:54:43 +0800 | [diff] [blame] | 250 | static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, |
| 251 | const struct acpi_hest_generic_data *gdata) |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 252 | { |
| 253 | if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE) |
| 254 | printk("%s""port_type: %d, %s\n", pfx, pcie->port_type, |
| 255 | pcie->port_type < ARRAY_SIZE(cper_pcie_port_type_strs) ? |
| 256 | cper_pcie_port_type_strs[pcie->port_type] : "unknown"); |
| 257 | if (pcie->validation_bits & CPER_PCIE_VALID_VERSION) |
| 258 | printk("%s""version: %d.%d\n", pfx, |
| 259 | pcie->version.major, pcie->version.minor); |
| 260 | if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS) |
| 261 | printk("%s""command: 0x%04x, status: 0x%04x\n", pfx, |
| 262 | pcie->command, pcie->status); |
| 263 | if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) { |
| 264 | const __u8 *p; |
| 265 | printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx, |
| 266 | pcie->device_id.segment, pcie->device_id.bus, |
| 267 | pcie->device_id.device, pcie->device_id.function); |
| 268 | printk("%s""slot: %d\n", pfx, |
| 269 | pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT); |
| 270 | printk("%s""secondary_bus: 0x%02x\n", pfx, |
| 271 | pcie->device_id.secondary_bus); |
| 272 | printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx, |
| 273 | pcie->device_id.vendor_id, pcie->device_id.device_id); |
| 274 | p = pcie->device_id.class_code; |
| 275 | printk("%s""class_code: %02x%02x%02x\n", pfx, p[0], p[1], p[2]); |
| 276 | } |
| 277 | if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER) |
| 278 | printk("%s""serial number: 0x%04x, 0x%04x\n", pfx, |
| 279 | pcie->serial_number.lower, pcie->serial_number.upper); |
| 280 | if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS) |
| 281 | printk( |
| 282 | "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", |
| 283 | pfx, pcie->bridge.secondary_status, pcie->bridge.control); |
| 284 | } |
| 285 | |
| 286 | static const char *apei_estatus_section_flag_strs[] = { |
| 287 | "primary", |
| 288 | "containment warning", |
| 289 | "reset", |
| 290 | "threshold exceeded", |
| 291 | "resource not accessible", |
| 292 | "latent error", |
| 293 | }; |
| 294 | |
| 295 | static void apei_estatus_print_section( |
| 296 | const char *pfx, const struct acpi_hest_generic_data *gdata, int sec_no) |
| 297 | { |
| 298 | uuid_le *sec_type = (uuid_le *)gdata->section_type; |
| 299 | __u16 severity; |
| 300 | |
| 301 | severity = gdata->error_severity; |
| 302 | printk("%s""section: %d, severity: %d, %s\n", pfx, sec_no, severity, |
| 303 | cper_severity_str(severity)); |
| 304 | printk("%s""flags: 0x%02x\n", pfx, gdata->flags); |
| 305 | cper_print_bits(pfx, gdata->flags, apei_estatus_section_flag_strs, |
| 306 | ARRAY_SIZE(apei_estatus_section_flag_strs)); |
| 307 | if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID) |
| 308 | printk("%s""fru_id: %pUl\n", pfx, (uuid_le *)gdata->fru_id); |
| 309 | if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT) |
| 310 | printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text); |
| 311 | |
| 312 | if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) { |
| 313 | struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1); |
| 314 | printk("%s""section_type: general processor error\n", pfx); |
| 315 | if (gdata->error_data_length >= sizeof(*proc_err)) |
| 316 | cper_print_proc_generic(pfx, proc_err); |
| 317 | else |
| 318 | goto err_section_too_small; |
| 319 | } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) { |
| 320 | struct cper_sec_mem_err *mem_err = (void *)(gdata + 1); |
| 321 | printk("%s""section_type: memory error\n", pfx); |
| 322 | if (gdata->error_data_length >= sizeof(*mem_err)) |
| 323 | cper_print_mem(pfx, mem_err); |
| 324 | else |
| 325 | goto err_section_too_small; |
| 326 | } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) { |
| 327 | struct cper_sec_pcie *pcie = (void *)(gdata + 1); |
| 328 | printk("%s""section_type: PCIe error\n", pfx); |
| 329 | if (gdata->error_data_length >= sizeof(*pcie)) |
Huang Ying | c413d76 | 2011-02-21 13:54:43 +0800 | [diff] [blame] | 330 | cper_print_pcie(pfx, pcie, gdata); |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 331 | else |
| 332 | goto err_section_too_small; |
| 333 | } else |
| 334 | printk("%s""section type: unknown, %pUl\n", pfx, sec_type); |
| 335 | |
| 336 | return; |
| 337 | |
| 338 | err_section_too_small: |
| 339 | pr_err(FW_WARN "error section length is too small\n"); |
| 340 | } |
| 341 | |
| 342 | void apei_estatus_print(const char *pfx, |
| 343 | const struct acpi_hest_generic_status *estatus) |
| 344 | { |
| 345 | struct acpi_hest_generic_data *gdata; |
| 346 | unsigned int data_len, gedata_len; |
| 347 | int sec_no = 0; |
| 348 | __u16 severity; |
| 349 | |
| 350 | printk("%s""APEI generic hardware error status\n", pfx); |
| 351 | severity = estatus->error_severity; |
| 352 | printk("%s""severity: %d, %s\n", pfx, severity, |
| 353 | cper_severity_str(severity)); |
| 354 | data_len = estatus->data_length; |
| 355 | gdata = (struct acpi_hest_generic_data *)(estatus + 1); |
Chen, Gong | 833ba4b | 2013-10-18 14:27:51 -0700 | [diff] [blame^] | 356 | while (data_len >= sizeof(*gdata)) { |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 357 | gedata_len = gdata->error_data_length; |
| 358 | apei_estatus_print_section(pfx, gdata, sec_no); |
| 359 | data_len -= gedata_len + sizeof(*gdata); |
Jiang Liu | 37d2a36 | 2012-02-15 00:01:44 +0800 | [diff] [blame] | 360 | gdata = (void *)(gdata + 1) + gedata_len; |
Huang Ying | f59c55d | 2010-12-07 10:22:30 +0800 | [diff] [blame] | 361 | sec_no++; |
| 362 | } |
| 363 | } |
| 364 | EXPORT_SYMBOL_GPL(apei_estatus_print); |
| 365 | |
Huang Ying | 06d65de | 2010-05-18 14:35:19 +0800 | [diff] [blame] | 366 | int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus) |
| 367 | { |
| 368 | if (estatus->data_length && |
| 369 | estatus->data_length < sizeof(struct acpi_hest_generic_data)) |
| 370 | return -EINVAL; |
| 371 | if (estatus->raw_data_length && |
| 372 | estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length) |
| 373 | return -EINVAL; |
| 374 | |
| 375 | return 0; |
| 376 | } |
| 377 | EXPORT_SYMBOL_GPL(apei_estatus_check_header); |
| 378 | |
| 379 | int apei_estatus_check(const struct acpi_hest_generic_status *estatus) |
| 380 | { |
| 381 | struct acpi_hest_generic_data *gdata; |
| 382 | unsigned int data_len, gedata_len; |
| 383 | int rc; |
| 384 | |
| 385 | rc = apei_estatus_check_header(estatus); |
| 386 | if (rc) |
| 387 | return rc; |
| 388 | data_len = estatus->data_length; |
| 389 | gdata = (struct acpi_hest_generic_data *)(estatus + 1); |
Chen Gong | aaf9d93 | 2013-03-19 06:48:07 +0000 | [diff] [blame] | 390 | while (data_len >= sizeof(*gdata)) { |
Huang Ying | 06d65de | 2010-05-18 14:35:19 +0800 | [diff] [blame] | 391 | gedata_len = gdata->error_data_length; |
| 392 | if (gedata_len > data_len - sizeof(*gdata)) |
| 393 | return -EINVAL; |
| 394 | data_len -= gedata_len + sizeof(*gdata); |
Jiang Liu | 37d2a36 | 2012-02-15 00:01:44 +0800 | [diff] [blame] | 395 | gdata = (void *)(gdata + 1) + gedata_len; |
Huang Ying | 06d65de | 2010-05-18 14:35:19 +0800 | [diff] [blame] | 396 | } |
| 397 | if (data_len) |
| 398 | return -EINVAL; |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | EXPORT_SYMBOL_GPL(apei_estatus_check); |