1// SPDX-License-Identifier: GPL-2.0 2/* 3 * UEFI Common Platform Error Record (CPER) support 4 * 5 * Copyright (C) 2010, Intel Corp. 6 * Author: Huang Ying <ying.huang@intel.com> 7 * 8 * CPER is the format used to describe platform hardware error by 9 * various tables, such as ERST, BERT and HEST etc. 10 * 11 * For more information about CPER, please refer to Appendix N of UEFI 12 * Specification version 2.4. 13 */ 14 15#include <linux/kernel.h> 16#include <linux/module.h> 17#include <linux/time.h> 18#include <linux/cper.h> 19#include <linux/dmi.h> 20#include <linux/acpi.h> 21#include <linux/pci.h> 22#include <linux/aer.h> 23#include <linux/printk.h> 24#include <linux/bcd.h> 25#include <acpi/ghes.h> 26#include <ras/ras_event.h> 27#include "cper_cxl.h" 28 29/* 30 * CPER record ID need to be unique even after reboot, because record 31 * ID is used as index for ERST storage, while CPER records from 32 * multiple boot may co-exist in ERST. 33 */ 34u64 cper_next_record_id(void) 35{ 36 static atomic64_t seq; 37 38 if (!atomic64_read(&seq)) { 39 time64_t time = ktime_get_real_seconds(); 40 41 /* 42 * This code is unlikely to still be needed in year 2106, 43 * but just in case, let's use a few more bits for timestamps 44 * after y2038 to be sure they keep increasing monotonically 45 * for the next few hundred years... 46 */ 47 if (time < 0x80000000) 48 atomic64_set(&seq, (ktime_get_real_seconds()) << 32); 49 else 50 atomic64_set(&seq, 0x8000000000000000ull | 51 ktime_get_real_seconds() << 24); 52 } 53 54 return atomic64_inc_return(&seq); 55} 56EXPORT_SYMBOL_GPL(cper_next_record_id); 57 58static const char * const severity_strs[] = { 59 "recoverable", 60 "fatal", 61 "corrected", 62 "info", 63}; 64 65const char *cper_severity_str(unsigned int severity) 66{ 67 return severity < ARRAY_SIZE(severity_strs) ? 68 severity_strs[severity] : "unknown"; 69} 70EXPORT_SYMBOL_GPL(cper_severity_str); 71 72/* 73 * cper_print_bits - print strings for set bits 74 * @pfx: prefix for each line, including log level and prefix string 75 * @bits: bit mask 76 * @strs: string array, indexed by bit position 77 * @strs_size: size of the string array: @strs 78 * 79 * For each set bit in @bits, print the corresponding string in @strs. 80 * If the output length is longer than 80, multiple line will be 81 * printed, with @pfx is printed at the beginning of each line. 82 */ 83void cper_print_bits(const char *pfx, unsigned int bits, 84 const char * const strs[], unsigned int strs_size) 85{ 86 int i, len = 0; 87 const char *str; 88 char buf[84]; 89 90 for (i = 0; i < strs_size; i++) { 91 if (!(bits & (1U << i))) 92 continue; 93 str = strs[i]; 94 if (!str) 95 continue; 96 if (len && len + strlen(str) + 2 > 80) { 97 printk("%s\n", buf); 98 len = 0; 99 } 100 if (!len) 101 len = snprintf(buf, sizeof(buf), "%s%s", pfx, str); 102 else 103 len += scnprintf(buf+len, sizeof(buf)-len, ", %s", str); 104 } 105 if (len) 106 printk("%s\n", buf); 107} 108 109static const char * const proc_type_strs[] = { 110 "IA32/X64", 111 "IA64", 112 "ARM", 113}; 114 115static const char * const proc_isa_strs[] = { 116 "IA32", 117 "IA64", 118 "X64", 119 "ARM A32/T32", 120 "ARM A64", 121}; 122 123const char * const cper_proc_error_type_strs[] = { 124 "cache error", 125 "TLB error", 126 "bus error", 127 "micro-architectural error", 128}; 129 130static const char * const proc_op_strs[] = { 131 "unknown or generic", 132 "data read", 133 "data write", 134 "instruction execution", 135}; 136 137static const char * const proc_flag_strs[] = { 138 "restartable", 139 "precise IP", 140 "overflow", 141 "corrected", 142}; 143 144static void cper_print_proc_generic(const char *pfx, 145 const struct cper_sec_proc_generic *proc) 146{ 147 if (proc->validation_bits & CPER_PROC_VALID_TYPE) 148 printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type, 149 proc->proc_type < ARRAY_SIZE(proc_type_strs) ? 150 proc_type_strs[proc->proc_type] : "unknown"); 151 if (proc->validation_bits & CPER_PROC_VALID_ISA) 152 printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa, 153 proc->proc_isa < ARRAY_SIZE(proc_isa_strs) ? 154 proc_isa_strs[proc->proc_isa] : "unknown"); 155 if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) { 156 printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type); 157 cper_print_bits(pfx, proc->proc_error_type, 158 cper_proc_error_type_strs, 159 ARRAY_SIZE(cper_proc_error_type_strs)); 160 } 161 if (proc->validation_bits & CPER_PROC_VALID_OPERATION) 162 printk("%s""operation: %d, %s\n", pfx, proc->operation, 163 proc->operation < ARRAY_SIZE(proc_op_strs) ? 164 proc_op_strs[proc->operation] : "unknown"); 165 if (proc->validation_bits & CPER_PROC_VALID_FLAGS) { 166 printk("%s""flags: 0x%02x\n", pfx, proc->flags); 167 cper_print_bits(pfx, proc->flags, proc_flag_strs, 168 ARRAY_SIZE(proc_flag_strs)); 169 } 170 if (proc->validation_bits & CPER_PROC_VALID_LEVEL) 171 printk("%s""level: %d\n", pfx, proc->level); 172 if (proc->validation_bits & CPER_PROC_VALID_VERSION) 173 printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version); 174 if (proc->validation_bits & CPER_PROC_VALID_ID) 175 printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id); 176 if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS) 177 printk("%s""target_address: 0x%016llx\n", 178 pfx, proc->target_addr); 179 if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID) 180 printk("%s""requestor_id: 0x%016llx\n", 181 pfx, proc->requestor_id); 182 if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID) 183 printk("%s""responder_id: 0x%016llx\n", 184 pfx, proc->responder_id); 185 if (proc->validation_bits & CPER_PROC_VALID_IP) 186 printk("%s""IP: 0x%016llx\n", pfx, proc->ip); 187} 188 189static const char * const mem_err_type_strs[] = { 190 "unknown", 191 "no error", 192 "single-bit ECC", 193 "multi-bit ECC", 194 "single-symbol chipkill ECC", 195 "multi-symbol chipkill ECC", 196 "master abort", 197 "target abort", 198 "parity error", 199 "watchdog timeout", 200 "invalid address", 201 "mirror Broken", 202 "memory sparing", 203 "scrub corrected error", 204 "scrub uncorrected error", 205 "physical memory map-out event", 206}; 207 208const char *cper_mem_err_type_str(unsigned int etype) 209{ 210 return etype < ARRAY_SIZE(mem_err_type_strs) ? 211 mem_err_type_strs[etype] : "unknown"; 212} 213EXPORT_SYMBOL_GPL(cper_mem_err_type_str); 214 215const char *cper_mem_err_status_str(u64 status) 216{ 217 switch ((status >> 8) & 0xff) { 218 case 1: return "Error detected internal to the component"; 219 case 4: return "Storage error in DRAM memory"; 220 case 5: return "Storage error in TLB"; 221 case 6: return "Storage error in cache"; 222 case 7: return "Error in one or more functional units"; 223 case 8: return "Component failed self test"; 224 case 9: return "Overflow or undervalue of internal queue"; 225 case 16: return "Error detected in the bus"; 226 case 17: return "Virtual address not found on IO-TLB or IO-PDIR"; 227 case 18: return "Improper access error"; 228 case 19: return "Access to a memory address which is not mapped to any component"; 229 case 20: return "Loss of Lockstep"; 230 case 21: return "Response not associated with a request"; 231 case 22: return "Bus parity error - must also set the A, C, or D Bits"; 232 case 23: return "Detection of a protocol error"; 233 case 24: return "Detection of a PATH_ERROR"; 234 case 25: return "Bus operation timeout"; 235 case 26: return "A read was issued to data that has been poisoned"; 236 default: return "Reserved"; 237 } 238} 239EXPORT_SYMBOL_GPL(cper_mem_err_status_str); 240 241int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg) 242{ 243 u32 len, n; 244 245 if (!msg) 246 return 0; 247 248 n = 0; 249 len = CPER_REC_LEN; 250 if (mem->validation_bits & CPER_MEM_VALID_NODE) 251 n += scnprintf(msg + n, len - n, "node:%d ", mem->node); 252 if (mem->validation_bits & CPER_MEM_VALID_CARD) 253 n += scnprintf(msg + n, len - n, "card:%d ", mem->card); 254 if (mem->validation_bits & CPER_MEM_VALID_MODULE) 255 n += scnprintf(msg + n, len - n, "module:%d ", mem->module); 256 if (mem->validation_bits & CPER_MEM_VALID_RANK_NUMBER) 257 n += scnprintf(msg + n, len - n, "rank:%d ", mem->rank); 258 if (mem->validation_bits & CPER_MEM_VALID_BANK) 259 n += scnprintf(msg + n, len - n, "bank:%d ", mem->bank); 260 if (mem->validation_bits & CPER_MEM_VALID_BANK_GROUP) 261 n += scnprintf(msg + n, len - n, "bank_group:%d ", 262 mem->bank >> CPER_MEM_BANK_GROUP_SHIFT); 263 if (mem->validation_bits & CPER_MEM_VALID_BANK_ADDRESS) 264 n += scnprintf(msg + n, len - n, "bank_address:%d ", 265 mem->bank & CPER_MEM_BANK_ADDRESS_MASK); 266 if (mem->validation_bits & CPER_MEM_VALID_DEVICE) 267 n += scnprintf(msg + n, len - n, "device:%d ", mem->device); 268 if (mem->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) { 269 u32 row = mem->row; 270 271 row |= cper_get_mem_extension(mem->validation_bits, mem->extended); 272 n += scnprintf(msg + n, len - n, "row:%d ", row); 273 } 274 if (mem->validation_bits & CPER_MEM_VALID_COLUMN) 275 n += scnprintf(msg + n, len - n, "column:%d ", mem->column); 276 if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION) 277 n += scnprintf(msg + n, len - n, "bit_position:%d ", 278 mem->bit_pos); 279 if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID) 280 n += scnprintf(msg + n, len - n, "requestor_id:0x%016llx ", 281 mem->requestor_id); 282 if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID) 283 n += scnprintf(msg + n, len - n, "responder_id:0x%016llx ", 284 mem->responder_id); 285 if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID) 286 n += scnprintf(msg + n, len - n, "target_id:0x%016llx ", 287 mem->target_id); 288 if (mem->validation_bits & CPER_MEM_VALID_CHIP_ID) 289 n += scnprintf(msg + n, len - n, "chip_id:%d ", 290 mem->extended >> CPER_MEM_CHIP_ID_SHIFT); 291 292 return n; 293} 294EXPORT_SYMBOL_GPL(cper_mem_err_location); 295 296int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg) 297{ 298 u32 len, n; 299 const char *bank = NULL, *device = NULL; 300 301 if (!msg || !(mem->validation_bits & CPER_MEM_VALID_MODULE_HANDLE)) 302 return 0; 303 304 len = CPER_REC_LEN; 305 dmi_memdev_name(mem->mem_dev_handle, &bank, &device); 306 if (bank && device) 307 n = snprintf(msg, len, "DIMM location: %s %s ", bank, device); 308 else 309 n = snprintf(msg, len, 310 "DIMM location: not present. DMI handle: 0x%.4x ", 311 mem->mem_dev_handle); 312 313 return n; 314} 315EXPORT_SYMBOL_GPL(cper_dimm_err_location); 316 317void cper_mem_err_pack(const struct cper_sec_mem_err *mem, 318 struct cper_mem_err_compact *cmem) 319{ 320 cmem->validation_bits = mem->validation_bits; 321 cmem->node = mem->node; 322 cmem->card = mem->card; 323 cmem->module = mem->module; 324 cmem->bank = mem->bank; 325 cmem->device = mem->device; 326 cmem->row = mem->row; 327 cmem->column = mem->column; 328 cmem->bit_pos = mem->bit_pos; 329 cmem->requestor_id = mem->requestor_id; 330 cmem->responder_id = mem->responder_id; 331 cmem->target_id = mem->target_id; 332 cmem->extended = mem->extended; 333 cmem->rank = mem->rank; 334 cmem->mem_array_handle = mem->mem_array_handle; 335 cmem->mem_dev_handle = mem->mem_dev_handle; 336} 337EXPORT_SYMBOL_GPL(cper_mem_err_pack); 338 339const char *cper_mem_err_unpack(struct trace_seq *p, 340 struct cper_mem_err_compact *cmem) 341{ 342 const char *ret = trace_seq_buffer_ptr(p); 343 char rcd_decode_str[CPER_REC_LEN]; 344 345 if (cper_mem_err_location(cmem, rcd_decode_str)) 346 trace_seq_printf(p, "%s", rcd_decode_str); 347 if (cper_dimm_err_location(cmem, rcd_decode_str)) 348 trace_seq_printf(p, "%s", rcd_decode_str); 349 trace_seq_putc(p, '\0'); 350 351 return ret; 352} 353 354static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem, 355 int len) 356{ 357 struct cper_mem_err_compact cmem; 358 char rcd_decode_str[CPER_REC_LEN]; 359 360 /* Don't trust UEFI 2.1/2.2 structure with bad validation bits */ 361 if (len == sizeof(struct cper_sec_mem_err_old) && 362 (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) { 363 pr_err(FW_WARN "valid bits set for fields beyond structure\n"); 364 return; 365 } 366 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS) 367 printk("%s error_status: %s (0x%016llx)\n", 368 pfx, cper_mem_err_status_str(mem->error_status), 369 mem->error_status); 370 if (mem->validation_bits & CPER_MEM_VALID_PA) 371 printk("%s""physical_address: 0x%016llx\n", 372 pfx, mem->physical_addr); 373 if (mem->validation_bits & CPER_MEM_VALID_PA_MASK) 374 printk("%s""physical_address_mask: 0x%016llx\n", 375 pfx, mem->physical_addr_mask); 376 cper_mem_err_pack(mem, &cmem); 377 if (cper_mem_err_location(&cmem, rcd_decode_str)) 378 printk("%s%s\n", pfx, rcd_decode_str); 379 if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) { 380 u8 etype = mem->error_type; 381 printk("%s""error_type: %d, %s\n", pfx, etype, 382 cper_mem_err_type_str(etype)); 383 } 384 if (cper_dimm_err_location(&cmem, rcd_decode_str)) 385 printk("%s%s\n", pfx, rcd_decode_str); 386} 387 388static const char * const pcie_port_type_strs[] = { 389 "PCIe end point", 390 "legacy PCI end point", 391 "unknown", 392 "unknown", 393 "root port", 394 "upstream switch port", 395 "downstream switch port", 396 "PCIe to PCI/PCI-X bridge", 397 "PCI/PCI-X to PCIe bridge", 398 "root complex integrated endpoint device", 399 "root complex event collector", 400}; 401 402static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, 403 const struct acpi_hest_generic_data *gdata) 404{ 405 if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE) 406 printk("%s""port_type: %d, %s\n", pfx, pcie->port_type, 407 pcie->port_type < ARRAY_SIZE(pcie_port_type_strs) ? 408 pcie_port_type_strs[pcie->port_type] : "unknown"); 409 if (pcie->validation_bits & CPER_PCIE_VALID_VERSION) 410 printk("%s""version: %d.%d\n", pfx, 411 pcie->version.major, pcie->version.minor); 412 if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS) 413 printk("%s""command: 0x%04x, status: 0x%04x\n", pfx, 414 pcie->command, pcie->status); 415 if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) { 416 const __u8 *p; 417 printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx, 418 pcie->device_id.segment, pcie->device_id.bus, 419 pcie->device_id.device, pcie->device_id.function); 420 printk("%s""slot: %d\n", pfx, 421 pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT); 422 printk("%s""secondary_bus: 0x%02x\n", pfx, 423 pcie->device_id.secondary_bus); 424 printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx, 425 pcie->device_id.vendor_id, pcie->device_id.device_id); 426 p = pcie->device_id.class_code; 427 printk("%s""class_code: %02x%02x%02x\n", pfx, p[2], p[1], p[0]); 428 } 429 if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER) 430 printk("%s""serial number: 0x%04x, 0x%04x\n", pfx, 431 pcie->serial_number.lower, pcie->serial_number.upper); 432 if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS) 433 printk( 434 "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", 435 pfx, pcie->bridge.secondary_status, pcie->bridge.control); 436 437 /* Fatal errors call __ghes_panic() before AER handler prints this */ 438 if ((pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) && 439 (gdata->error_severity & CPER_SEV_FATAL)) { 440 struct aer_capability_regs *aer; 441 442 aer = (struct aer_capability_regs *)pcie->aer_info; 443 printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n", 444 pfx, aer->uncor_status, aer->uncor_mask); 445 printk("%saer_uncor_severity: 0x%08x\n", 446 pfx, aer->uncor_severity); 447 printk("%sTLP Header: %08x %08x %08x %08x\n", pfx, 448 aer->header_log.dw[0], aer->header_log.dw[1], 449 aer->header_log.dw[2], aer->header_log.dw[3]); 450 } 451} 452 453static const char * const fw_err_rec_type_strs[] = { 454 "IPF SAL Error Record", 455 "SOC Firmware Error Record Type1 (Legacy CrashLog Support)", 456 "SOC Firmware Error Record Type2", 457}; 458 459static void cper_print_fw_err(const char *pfx, 460 struct acpi_hest_generic_data *gdata, 461 const struct cper_sec_fw_err_rec_ref *fw_err) 462{ 463 void *buf = acpi_hest_get_payload(gdata); 464 u32 offset, length = gdata->error_data_length; 465 466 printk("%s""Firmware Error Record Type: %s\n", pfx, 467 fw_err->record_type < ARRAY_SIZE(fw_err_rec_type_strs) ? 468 fw_err_rec_type_strs[fw_err->record_type] : "unknown"); 469 printk("%s""Revision: %d\n", pfx, fw_err->revision); 470 471 /* Record Type based on UEFI 2.7 */ 472 if (fw_err->revision == 0) { 473 printk("%s""Record Identifier: %08llx\n", pfx, 474 fw_err->record_identifier); 475 } else if (fw_err->revision == 2) { 476 printk("%s""Record Identifier: %pUl\n", pfx, 477 &fw_err->record_identifier_guid); 478 } 479 480 /* 481 * The FW error record may contain trailing data beyond the 482 * structure defined by the specification. As the fields 483 * defined (and hence the offset of any trailing data) vary 484 * with the revision, set the offset to account for this 485 * variation. 486 */ 487 if (fw_err->revision == 0) { 488 /* record_identifier_guid not defined */ 489 offset = offsetof(struct cper_sec_fw_err_rec_ref, 490 record_identifier_guid); 491 } else if (fw_err->revision == 1) { 492 /* record_identifier not defined */ 493 offset = offsetof(struct cper_sec_fw_err_rec_ref, 494 record_identifier); 495 } else { 496 offset = sizeof(*fw_err); 497 } 498 499 buf += offset; 500 length -= offset; 501 502 print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, buf, length, true); 503} 504 505static void cper_print_tstamp(const char *pfx, 506 struct acpi_hest_generic_data_v300 *gdata) 507{ 508 __u8 hour, min, sec, day, mon, year, century, *timestamp; 509 510 if (gdata->validation_bits & ACPI_HEST_GEN_VALID_TIMESTAMP) { 511 timestamp = (__u8 *)&(gdata->time_stamp); 512 sec = bcd2bin(timestamp[0]); 513 min = bcd2bin(timestamp[1]); 514 hour = bcd2bin(timestamp[2]); 515 day = bcd2bin(timestamp[4]); 516 mon = bcd2bin(timestamp[5]); 517 year = bcd2bin(timestamp[6]); 518 century = bcd2bin(timestamp[7]); 519 520 printk("%s%ststamp: %02d%02d-%02d-%02d %02d:%02d:%02d\n", pfx, 521 (timestamp[3] & 0x1 ? "precise " : "imprecise "), 522 century, year, mon, day, hour, min, sec); 523 } 524} 525 526struct ignore_section { 527 guid_t guid; 528 const char *name; 529}; 530 531static const struct ignore_section ignore_sections[] = { 532 { .guid = CPER_SEC_CXL_GEN_MEDIA_GUID, .name = "CXL General Media Event" }, 533 { .guid = CPER_SEC_CXL_DRAM_GUID, .name = "CXL DRAM Event" }, 534 { .guid = CPER_SEC_CXL_MEM_MODULE_GUID, .name = "CXL Memory Module Event" }, 535}; 536 537static void 538cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata, 539 int sec_no) 540{ 541 guid_t *sec_type = (guid_t *)gdata->section_type; 542 __u16 severity; 543 char newpfx[64]; 544 545 if (acpi_hest_get_version(gdata) >= 3) 546 cper_print_tstamp(pfx, (struct acpi_hest_generic_data_v300 *)gdata); 547 548 severity = gdata->error_severity; 549 printk("%s""Error %d, type: %s\n", pfx, sec_no, 550 cper_severity_str(severity)); 551 if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID) 552 printk("%s""fru_id: %pUl\n", pfx, gdata->fru_id); 553 if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT) 554 printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text); 555 556 snprintf(newpfx, sizeof(newpfx), "%s ", pfx); 557 558 for (int i = 0; i < ARRAY_SIZE(ignore_sections); i++) { 559 if (guid_equal(sec_type, &ignore_sections[i].guid)) { 560 printk("%ssection_type: %s\n", newpfx, ignore_sections[i].name); 561 return; 562 } 563 } 564 565 if (guid_equal(sec_type, &CPER_SEC_PROC_GENERIC)) { 566 struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata); 567 568 printk("%s""section_type: general processor error\n", newpfx); 569 if (gdata->error_data_length >= sizeof(*proc_err)) 570 cper_print_proc_generic(newpfx, proc_err); 571 else 572 goto err_section_too_small; 573 } else if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) { 574 struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata); 575 576 printk("%s""section_type: memory error\n", newpfx); 577 if (gdata->error_data_length >= 578 sizeof(struct cper_sec_mem_err_old)) 579 cper_print_mem(newpfx, mem_err, 580 gdata->error_data_length); 581 else 582 goto err_section_too_small; 583 } else if (guid_equal(sec_type, &CPER_SEC_PCIE)) { 584 struct cper_sec_pcie *pcie = acpi_hest_get_payload(gdata); 585 586 printk("%s""section_type: PCIe error\n", newpfx); 587 if (gdata->error_data_length >= sizeof(*pcie)) 588 cper_print_pcie(newpfx, pcie, gdata); 589 else 590 goto err_section_too_small; 591#if defined(CONFIG_ARM64) || defined(CONFIG_ARM) 592 } else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) { 593 struct cper_sec_proc_arm *arm_err = acpi_hest_get_payload(gdata); 594 595 printk("%ssection_type: ARM processor error\n", newpfx); 596 if (gdata->error_data_length >= sizeof(*arm_err)) 597 cper_print_proc_arm(newpfx, arm_err); 598 else 599 goto err_section_too_small; 600#endif 601#if defined(CONFIG_UEFI_CPER_X86) 602 } else if (guid_equal(sec_type, &CPER_SEC_PROC_IA)) { 603 struct cper_sec_proc_ia *ia_err = acpi_hest_get_payload(gdata); 604 605 printk("%ssection_type: IA32/X64 processor error\n", newpfx); 606 if (gdata->error_data_length >= sizeof(*ia_err)) 607 cper_print_proc_ia(newpfx, ia_err); 608 else 609 goto err_section_too_small; 610#endif 611 } else if (guid_equal(sec_type, &CPER_SEC_FW_ERR_REC_REF)) { 612 struct cper_sec_fw_err_rec_ref *fw_err = acpi_hest_get_payload(gdata); 613 614 printk("%ssection_type: Firmware Error Record Reference\n", 615 newpfx); 616 /* The minimal FW Error Record contains 16 bytes */ 617 if (gdata->error_data_length >= SZ_16) 618 cper_print_fw_err(newpfx, gdata, fw_err); 619 else 620 goto err_section_too_small; 621 } else if (guid_equal(sec_type, &CPER_SEC_CXL_PROT_ERR)) { 622 struct cper_sec_prot_err *prot_err = acpi_hest_get_payload(gdata); 623 624 printk("%ssection_type: CXL Protocol Error\n", newpfx); 625 if (gdata->error_data_length >= sizeof(*prot_err)) 626 cper_print_prot_err(newpfx, prot_err); 627 else 628 goto err_section_too_small; 629 } else { 630 const void *err = acpi_hest_get_payload(gdata); 631 632 printk("%ssection type: unknown, %pUl\n", newpfx, sec_type); 633 printk("%ssection length: %#x\n", newpfx, 634 gdata->error_data_length); 635 print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, err, 636 gdata->error_data_length, true); 637 } 638 639 return; 640 641err_section_too_small: 642 pr_err(FW_WARN "error section length is too small\n"); 643} 644 645void cper_estatus_print(const char *pfx, 646 const struct acpi_hest_generic_status *estatus) 647{ 648 struct acpi_hest_generic_data *gdata; 649 int sec_no = 0; 650 char newpfx[64]; 651 __u16 severity; 652 653 severity = estatus->error_severity; 654 if (severity == CPER_SEV_CORRECTED) 655 printk("%s%s\n", pfx, 656 "It has been corrected by h/w " 657 "and requires no further action"); 658 printk("%s""event severity: %s\n", pfx, cper_severity_str(severity)); 659 snprintf(newpfx, sizeof(newpfx), "%s ", pfx); 660 661 apei_estatus_for_each_section(estatus, gdata) { 662 cper_estatus_print_section(newpfx, gdata, sec_no); 663 sec_no++; 664 } 665} 666EXPORT_SYMBOL_GPL(cper_estatus_print); 667 668int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus) 669{ 670 if (estatus->data_length && 671 estatus->data_length < sizeof(struct acpi_hest_generic_data)) 672 return -EINVAL; 673 if (estatus->raw_data_length && 674 estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length) 675 return -EINVAL; 676 677 return 0; 678} 679EXPORT_SYMBOL_GPL(cper_estatus_check_header); 680 681int cper_estatus_check(const struct acpi_hest_generic_status *estatus) 682{ 683 struct acpi_hest_generic_data *gdata; 684 unsigned int data_len, record_size; 685 int rc; 686 687 rc = cper_estatus_check_header(estatus); 688 if (rc) 689 return rc; 690 691 data_len = estatus->data_length; 692 693 apei_estatus_for_each_section(estatus, gdata) { 694 if (acpi_hest_get_size(gdata) > data_len) 695 return -EINVAL; 696 697 record_size = acpi_hest_get_record_size(gdata); 698 if (record_size > data_len) 699 return -EINVAL; 700 701 data_len -= record_size; 702 } 703 if (data_len) 704 return -EINVAL; 705 706 return 0; 707} 708EXPORT_SYMBOL_GPL(cper_estatus_check); 709