2 * UEFI Common Platform Error Record (CPER) support
4 * Copyright (C) 2010, Intel Corp.
5 * Author: Huang Ying <ying.huang@intel.com>
7 * CPER is the format used to describe platform hardware error by
8 * various tables, such as ERST, BERT and HEST etc.
10 * For more information about CPER, please refer to Appendix N of UEFI
11 * Specification version 2.4.
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.
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.
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
27 #include <linux/kernel.h>
28 #include <linux/module.h>
29 #include <linux/time.h>
30 #include <linux/cper.h>
31 #include <linux/dmi.h>
32 #include <linux/acpi.h>
33 #include <linux/pci.h>
34 #include <linux/aer.h>
38 static char rcd_decode_str[CPER_REC_LEN];
41 * CPER record ID need to be unique even after reboot, because record
42 * ID is used as index for ERST storage, while CPER records from
43 * multiple boot may co-exist in ERST.
45 u64 cper_next_record_id(void)
47 static atomic64_t seq;
49 if (!atomic64_read(&seq))
50 atomic64_set(&seq, ((u64)get_seconds()) << 32);
52 return atomic64_inc_return(&seq);
54 EXPORT_SYMBOL_GPL(cper_next_record_id);
56 static const char * const severity_strs[] = {
63 const char *cper_severity_str(unsigned int severity)
65 return severity < ARRAY_SIZE(severity_strs) ?
66 severity_strs[severity] : "unknown";
68 EXPORT_SYMBOL_GPL(cper_severity_str);
71 * cper_print_bits - print strings for set bits
72 * @pfx: prefix for each line, including log level and prefix string
74 * @strs: string array, indexed by bit position
75 * @strs_size: size of the string array: @strs
77 * For each set bit in @bits, print the corresponding string in @strs.
78 * If the output length is longer than 80, multiple line will be
79 * printed, with @pfx is printed at the beginning of each line.
81 void cper_print_bits(const char *pfx, unsigned int bits,
82 const char * const strs[], unsigned int strs_size)
88 for (i = 0; i < strs_size; i++) {
89 if (!(bits & (1U << i)))
94 if (len && len + strlen(str) + 2 > 80) {
99 len = snprintf(buf, sizeof(buf), "%s%s", pfx, str);
101 len += snprintf(buf+len, sizeof(buf)-len, ", %s", str);
107 static const char * const proc_type_strs[] = {
112 static const char * const proc_isa_strs[] = {
118 static const char * const proc_error_type_strs[] = {
122 "micro-architectural error",
125 static const char * const proc_op_strs[] = {
126 "unknown or generic",
129 "instruction execution",
132 static const char * const proc_flag_strs[] = {
139 static void cper_print_proc_generic(const char *pfx,
140 const struct cper_sec_proc_generic *proc)
142 if (proc->validation_bits & CPER_PROC_VALID_TYPE)
143 printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type,
144 proc->proc_type < ARRAY_SIZE(proc_type_strs) ?
145 proc_type_strs[proc->proc_type] : "unknown");
146 if (proc->validation_bits & CPER_PROC_VALID_ISA)
147 printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa,
148 proc->proc_isa < ARRAY_SIZE(proc_isa_strs) ?
149 proc_isa_strs[proc->proc_isa] : "unknown");
150 if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) {
151 printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type);
152 cper_print_bits(pfx, proc->proc_error_type,
153 proc_error_type_strs,
154 ARRAY_SIZE(proc_error_type_strs));
156 if (proc->validation_bits & CPER_PROC_VALID_OPERATION)
157 printk("%s""operation: %d, %s\n", pfx, proc->operation,
158 proc->operation < ARRAY_SIZE(proc_op_strs) ?
159 proc_op_strs[proc->operation] : "unknown");
160 if (proc->validation_bits & CPER_PROC_VALID_FLAGS) {
161 printk("%s""flags: 0x%02x\n", pfx, proc->flags);
162 cper_print_bits(pfx, proc->flags, proc_flag_strs,
163 ARRAY_SIZE(proc_flag_strs));
165 if (proc->validation_bits & CPER_PROC_VALID_LEVEL)
166 printk("%s""level: %d\n", pfx, proc->level);
167 if (proc->validation_bits & CPER_PROC_VALID_VERSION)
168 printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version);
169 if (proc->validation_bits & CPER_PROC_VALID_ID)
170 printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id);
171 if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS)
172 printk("%s""target_address: 0x%016llx\n",
173 pfx, proc->target_addr);
174 if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID)
175 printk("%s""requestor_id: 0x%016llx\n",
176 pfx, proc->requestor_id);
177 if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID)
178 printk("%s""responder_id: 0x%016llx\n",
179 pfx, proc->responder_id);
180 if (proc->validation_bits & CPER_PROC_VALID_IP)
181 printk("%s""IP: 0x%016llx\n", pfx, proc->ip);
184 static const char * const mem_err_type_strs[] = {
189 "single-symbol chipkill ECC",
190 "multi-symbol chipkill ECC",
198 "scrub corrected error",
199 "scrub uncorrected error",
200 "physical memory map-out event",
203 const char *cper_mem_err_type_str(unsigned int etype)
205 return etype < ARRAY_SIZE(mem_err_type_strs) ?
206 mem_err_type_strs[etype] : "unknown";
208 EXPORT_SYMBOL_GPL(cper_mem_err_type_str);
210 static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
218 len = CPER_REC_LEN - 1;
219 if (mem->validation_bits & CPER_MEM_VALID_NODE)
220 n += scnprintf(msg + n, len - n, "node: %d ", mem->node);
221 if (mem->validation_bits & CPER_MEM_VALID_CARD)
222 n += scnprintf(msg + n, len - n, "card: %d ", mem->card);
223 if (mem->validation_bits & CPER_MEM_VALID_MODULE)
224 n += scnprintf(msg + n, len - n, "module: %d ", mem->module);
225 if (mem->validation_bits & CPER_MEM_VALID_RANK_NUMBER)
226 n += scnprintf(msg + n, len - n, "rank: %d ", mem->rank);
227 if (mem->validation_bits & CPER_MEM_VALID_BANK)
228 n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
229 if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
230 n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
231 if (mem->validation_bits & CPER_MEM_VALID_ROW)
232 n += scnprintf(msg + n, len - n, "row: %d ", mem->row);
233 if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
234 n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
235 if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
236 n += scnprintf(msg + n, len - n, "bit_position: %d ",
238 if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
239 n += scnprintf(msg + n, len - n, "requestor_id: 0x%016llx ",
241 if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
242 n += scnprintf(msg + n, len - n, "responder_id: 0x%016llx ",
244 if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
245 scnprintf(msg + n, len - n, "target_id: 0x%016llx ",
252 static int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
255 const char *bank = NULL, *device = NULL;
257 if (!msg || !(mem->validation_bits & CPER_MEM_VALID_MODULE_HANDLE))
261 len = CPER_REC_LEN - 1;
262 dmi_memdev_name(mem->mem_dev_handle, &bank, &device);
264 n = snprintf(msg, len, "DIMM location: %s %s ", bank, device);
266 n = snprintf(msg, len,
267 "DIMM location: not present. DMI handle: 0x%.4x ",
268 mem->mem_dev_handle);
274 void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
275 struct cper_mem_err_compact *cmem)
277 cmem->validation_bits = mem->validation_bits;
278 cmem->node = mem->node;
279 cmem->card = mem->card;
280 cmem->module = mem->module;
281 cmem->bank = mem->bank;
282 cmem->device = mem->device;
283 cmem->row = mem->row;
284 cmem->column = mem->column;
285 cmem->bit_pos = mem->bit_pos;
286 cmem->requestor_id = mem->requestor_id;
287 cmem->responder_id = mem->responder_id;
288 cmem->target_id = mem->target_id;
289 cmem->rank = mem->rank;
290 cmem->mem_array_handle = mem->mem_array_handle;
291 cmem->mem_dev_handle = mem->mem_dev_handle;
294 const char *cper_mem_err_unpack(struct trace_seq *p,
295 struct cper_mem_err_compact *cmem)
297 const char *ret = trace_seq_buffer_ptr(p);
299 if (cper_mem_err_location(cmem, rcd_decode_str))
300 trace_seq_printf(p, "%s", rcd_decode_str);
301 if (cper_dimm_err_location(cmem, rcd_decode_str))
302 trace_seq_printf(p, "%s", rcd_decode_str);
303 trace_seq_putc(p, '\0');
308 static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
311 struct cper_mem_err_compact cmem;
313 /* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
314 if (len == sizeof(struct cper_sec_mem_err_old) &&
315 (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
316 pr_err(FW_WARN "valid bits set for fields beyond structure\n");
319 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
320 printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
321 if (mem->validation_bits & CPER_MEM_VALID_PA)
322 printk("%s""physical_address: 0x%016llx\n",
323 pfx, mem->physical_addr);
324 if (mem->validation_bits & CPER_MEM_VALID_PA_MASK)
325 printk("%s""physical_address_mask: 0x%016llx\n",
326 pfx, mem->physical_addr_mask);
327 cper_mem_err_pack(mem, &cmem);
328 if (cper_mem_err_location(&cmem, rcd_decode_str))
329 printk("%s%s\n", pfx, rcd_decode_str);
330 if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
331 u8 etype = mem->error_type;
332 printk("%s""error_type: %d, %s\n", pfx, etype,
333 cper_mem_err_type_str(etype));
335 if (cper_dimm_err_location(&cmem, rcd_decode_str))
336 printk("%s%s\n", pfx, rcd_decode_str);
339 static const char * const pcie_port_type_strs[] = {
341 "legacy PCI end point",
345 "upstream switch port",
346 "downstream switch port",
347 "PCIe to PCI/PCI-X bridge",
348 "PCI/PCI-X to PCIe bridge",
349 "root complex integrated endpoint device",
350 "root complex event collector",
353 static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
354 const struct acpi_hest_generic_data *gdata)
356 if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
357 printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
358 pcie->port_type < ARRAY_SIZE(pcie_port_type_strs) ?
359 pcie_port_type_strs[pcie->port_type] : "unknown");
360 if (pcie->validation_bits & CPER_PCIE_VALID_VERSION)
361 printk("%s""version: %d.%d\n", pfx,
362 pcie->version.major, pcie->version.minor);
363 if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS)
364 printk("%s""command: 0x%04x, status: 0x%04x\n", pfx,
365 pcie->command, pcie->status);
366 if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) {
368 printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx,
369 pcie->device_id.segment, pcie->device_id.bus,
370 pcie->device_id.device, pcie->device_id.function);
371 printk("%s""slot: %d\n", pfx,
372 pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT);
373 printk("%s""secondary_bus: 0x%02x\n", pfx,
374 pcie->device_id.secondary_bus);
375 printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx,
376 pcie->device_id.vendor_id, pcie->device_id.device_id);
377 p = pcie->device_id.class_code;
378 printk("%s""class_code: %02x%02x%02x\n", pfx, p[0], p[1], p[2]);
380 if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER)
381 printk("%s""serial number: 0x%04x, 0x%04x\n", pfx,
382 pcie->serial_number.lower, pcie->serial_number.upper);
383 if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS)
385 "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
386 pfx, pcie->bridge.secondary_status, pcie->bridge.control);
389 static void cper_estatus_print_section(
390 const char *pfx, const struct acpi_hest_generic_data *gdata, int sec_no)
392 uuid_le *sec_type = (uuid_le *)gdata->section_type;
396 severity = gdata->error_severity;
397 printk("%s""Error %d, type: %s\n", pfx, sec_no,
398 cper_severity_str(severity));
399 if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
400 printk("%s""fru_id: %pUl\n", pfx, (uuid_le *)gdata->fru_id);
401 if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
402 printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text);
404 snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP);
405 if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) {
406 struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1);
407 printk("%s""section_type: general processor error\n", newpfx);
408 if (gdata->error_data_length >= sizeof(*proc_err))
409 cper_print_proc_generic(newpfx, proc_err);
411 goto err_section_too_small;
412 } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
413 struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
414 printk("%s""section_type: memory error\n", newpfx);
415 if (gdata->error_data_length >=
416 sizeof(struct cper_sec_mem_err_old))
417 cper_print_mem(newpfx, mem_err,
418 gdata->error_data_length);
420 goto err_section_too_small;
421 } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
422 struct cper_sec_pcie *pcie = (void *)(gdata + 1);
423 printk("%s""section_type: PCIe error\n", newpfx);
424 if (gdata->error_data_length >= sizeof(*pcie))
425 cper_print_pcie(newpfx, pcie, gdata);
427 goto err_section_too_small;
429 printk("%s""section type: unknown, %pUl\n", newpfx, sec_type);
433 err_section_too_small:
434 pr_err(FW_WARN "error section length is too small\n");
437 void cper_estatus_print(const char *pfx,
438 const struct acpi_hest_generic_status *estatus)
440 struct acpi_hest_generic_data *gdata;
441 unsigned int data_len, gedata_len;
446 severity = estatus->error_severity;
447 if (severity == CPER_SEV_CORRECTED)
448 printk("%s%s\n", pfx,
449 "It has been corrected by h/w "
450 "and requires no further action");
451 printk("%s""event severity: %s\n", pfx, cper_severity_str(severity));
452 data_len = estatus->data_length;
453 gdata = (struct acpi_hest_generic_data *)(estatus + 1);
454 snprintf(newpfx, sizeof(newpfx), "%s%s", pfx, INDENT_SP);
455 while (data_len >= sizeof(*gdata)) {
456 gedata_len = gdata->error_data_length;
457 cper_estatus_print_section(newpfx, gdata, sec_no);
458 data_len -= gedata_len + sizeof(*gdata);
459 gdata = (void *)(gdata + 1) + gedata_len;
463 EXPORT_SYMBOL_GPL(cper_estatus_print);
465 int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus)
467 if (estatus->data_length &&
468 estatus->data_length < sizeof(struct acpi_hest_generic_data))
470 if (estatus->raw_data_length &&
471 estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
476 EXPORT_SYMBOL_GPL(cper_estatus_check_header);
478 int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
480 struct acpi_hest_generic_data *gdata;
481 unsigned int data_len, gedata_len;
484 rc = cper_estatus_check_header(estatus);
487 data_len = estatus->data_length;
488 gdata = (struct acpi_hest_generic_data *)(estatus + 1);
489 while (data_len >= sizeof(*gdata)) {
490 gedata_len = gdata->error_data_length;
491 if (gedata_len > data_len - sizeof(*gdata))
493 data_len -= gedata_len + sizeof(*gdata);
494 gdata = (void *)(gdata + 1) + gedata_len;
501 EXPORT_SYMBOL_GPL(cper_estatus_check);