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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 /*
438 * Print all valid AER info. Record may be from BERT (boot-time) or GHES (run-time).
439 *
440 * Fatal errors call __ghes_panic() before AER handler prints this.
441 */
442 if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) {
443 struct aer_capability_regs *aer;
444
445 aer = (struct aer_capability_regs *)pcie->aer_info;
446 printk("%saer_cor_status: 0x%08x, aer_cor_mask: 0x%08x\n",
447 pfx, aer->cor_status, aer->cor_mask);
448 printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n",
449 pfx, aer->uncor_status, aer->uncor_mask);
450 printk("%saer_uncor_severity: 0x%08x\n",
451 pfx, aer->uncor_severity);
452 printk("%sTLP Header: %08x %08x %08x %08x\n", pfx,
453 aer->header_log.dw[0], aer->header_log.dw[1],
454 aer->header_log.dw[2], aer->header_log.dw[3]);
455 }
456}
457
458static const char * const fw_err_rec_type_strs[] = {
459 "IPF SAL Error Record",
460 "SOC Firmware Error Record Type1 (Legacy CrashLog Support)",
461 "SOC Firmware Error Record Type2",
462};
463
464static void cper_print_fw_err(const char *pfx,
465 struct acpi_hest_generic_data *gdata,
466 const struct cper_sec_fw_err_rec_ref *fw_err)
467{
468 void *buf = acpi_hest_get_payload(gdata);
469 u32 offset, length = gdata->error_data_length;
470
471 printk("%s""Firmware Error Record Type: %s\n", pfx,
472 fw_err->record_type < ARRAY_SIZE(fw_err_rec_type_strs) ?
473 fw_err_rec_type_strs[fw_err->record_type] : "unknown");
474 printk("%s""Revision: %d\n", pfx, fw_err->revision);
475
476 /* Record Type based on UEFI 2.7 */
477 if (fw_err->revision == 0) {
478 printk("%s""Record Identifier: %08llx\n", pfx,
479 fw_err->record_identifier);
480 } else if (fw_err->revision == 2) {
481 printk("%s""Record Identifier: %pUl\n", pfx,
482 &fw_err->record_identifier_guid);
483 }
484
485 /*
486 * The FW error record may contain trailing data beyond the
487 * structure defined by the specification. As the fields
488 * defined (and hence the offset of any trailing data) vary
489 * with the revision, set the offset to account for this
490 * variation.
491 */
492 if (fw_err->revision == 0) {
493 /* record_identifier_guid not defined */
494 offset = offsetof(struct cper_sec_fw_err_rec_ref,
495 record_identifier_guid);
496 } else if (fw_err->revision == 1) {
497 /* record_identifier not defined */
498 offset = offsetof(struct cper_sec_fw_err_rec_ref,
499 record_identifier);
500 } else {
501 offset = sizeof(*fw_err);
502 }
503
504 buf += offset;
505 length -= offset;
506
507 print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, buf, length, true);
508}
509
510static void cper_print_tstamp(const char *pfx,
511 struct acpi_hest_generic_data_v300 *gdata)
512{
513 __u8 hour, min, sec, day, mon, year, century, *timestamp;
514
515 if (gdata->validation_bits & ACPI_HEST_GEN_VALID_TIMESTAMP) {
516 timestamp = (__u8 *)&(gdata->time_stamp);
517 sec = bcd2bin(timestamp[0]);
518 min = bcd2bin(timestamp[1]);
519 hour = bcd2bin(timestamp[2]);
520 day = bcd2bin(timestamp[4]);
521 mon = bcd2bin(timestamp[5]);
522 year = bcd2bin(timestamp[6]);
523 century = bcd2bin(timestamp[7]);
524
525 printk("%s%ststamp: %02d%02d-%02d-%02d %02d:%02d:%02d\n", pfx,
526 (timestamp[3] & 0x1 ? "precise " : "imprecise "),
527 century, year, mon, day, hour, min, sec);
528 }
529}
530
531struct ignore_section {
532 guid_t guid;
533 const char *name;
534};
535
536static const struct ignore_section ignore_sections[] = {
537 { .guid = CPER_SEC_CXL_GEN_MEDIA_GUID, .name = "CXL General Media Event" },
538 { .guid = CPER_SEC_CXL_DRAM_GUID, .name = "CXL DRAM Event" },
539 { .guid = CPER_SEC_CXL_MEM_MODULE_GUID, .name = "CXL Memory Module Event" },
540};
541
542static void
543cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata,
544 int sec_no)
545{
546 guid_t *sec_type = (guid_t *)gdata->section_type;
547 __u16 severity;
548 char newpfx[64];
549
550 if (acpi_hest_get_version(gdata) >= 3)
551 cper_print_tstamp(pfx, (struct acpi_hest_generic_data_v300 *)gdata);
552
553 severity = gdata->error_severity;
554 printk("%s""Error %d, type: %s\n", pfx, sec_no,
555 cper_severity_str(severity));
556 if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
557 printk("%s""fru_id: %pUl\n", pfx, gdata->fru_id);
558 if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
559 printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text);
560
561 snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
562
563 for (int i = 0; i < ARRAY_SIZE(ignore_sections); i++) {
564 if (guid_equal(sec_type, &ignore_sections[i].guid)) {
565 printk("%ssection_type: %s\n", newpfx, ignore_sections[i].name);
566 return;
567 }
568 }
569
570 if (guid_equal(sec_type, &CPER_SEC_PROC_GENERIC)) {
571 struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata);
572
573 printk("%s""section_type: general processor error\n", newpfx);
574 if (gdata->error_data_length >= sizeof(*proc_err))
575 cper_print_proc_generic(newpfx, proc_err);
576 else
577 goto err_section_too_small;
578 } else if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
579 struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
580
581 printk("%s""section_type: memory error\n", newpfx);
582 if (gdata->error_data_length >=
583 sizeof(struct cper_sec_mem_err_old))
584 cper_print_mem(newpfx, mem_err,
585 gdata->error_data_length);
586 else
587 goto err_section_too_small;
588 } else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
589 struct cper_sec_pcie *pcie = acpi_hest_get_payload(gdata);
590
591 printk("%s""section_type: PCIe error\n", newpfx);
592 if (gdata->error_data_length >= sizeof(*pcie))
593 cper_print_pcie(newpfx, pcie, gdata);
594 else
595 goto err_section_too_small;
596#if defined(CONFIG_ARM64) || defined(CONFIG_ARM)
597 } else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
598 struct cper_sec_proc_arm *arm_err = acpi_hest_get_payload(gdata);
599
600 printk("%ssection_type: ARM processor error\n", newpfx);
601 if (gdata->error_data_length >= sizeof(*arm_err))
602 cper_print_proc_arm(newpfx, arm_err);
603 else
604 goto err_section_too_small;
605#endif
606#if defined(CONFIG_UEFI_CPER_X86)
607 } else if (guid_equal(sec_type, &CPER_SEC_PROC_IA)) {
608 struct cper_sec_proc_ia *ia_err = acpi_hest_get_payload(gdata);
609
610 printk("%ssection_type: IA32/X64 processor error\n", newpfx);
611 if (gdata->error_data_length >= sizeof(*ia_err))
612 cper_print_proc_ia(newpfx, ia_err);
613 else
614 goto err_section_too_small;
615#endif
616 } else if (guid_equal(sec_type, &CPER_SEC_FW_ERR_REC_REF)) {
617 struct cper_sec_fw_err_rec_ref *fw_err = acpi_hest_get_payload(gdata);
618
619 printk("%ssection_type: Firmware Error Record Reference\n",
620 newpfx);
621 /* The minimal FW Error Record contains 16 bytes */
622 if (gdata->error_data_length >= SZ_16)
623 cper_print_fw_err(newpfx, gdata, fw_err);
624 else
625 goto err_section_too_small;
626 } else if (guid_equal(sec_type, &CPER_SEC_CXL_PROT_ERR)) {
627 struct cper_sec_prot_err *prot_err = acpi_hest_get_payload(gdata);
628
629 printk("%ssection_type: CXL Protocol Error\n", newpfx);
630 if (gdata->error_data_length >= sizeof(*prot_err))
631 cper_print_prot_err(newpfx, prot_err);
632 else
633 goto err_section_too_small;
634 } else {
635 const void *err = acpi_hest_get_payload(gdata);
636
637 printk("%ssection type: unknown, %pUl\n", newpfx, sec_type);
638 printk("%ssection length: %#x\n", newpfx,
639 gdata->error_data_length);
640 print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, err,
641 gdata->error_data_length, true);
642 }
643
644 return;
645
646err_section_too_small:
647 pr_err(FW_WARN "error section length is too small\n");
648}
649
650void cper_estatus_print(const char *pfx,
651 const struct acpi_hest_generic_status *estatus)
652{
653 struct acpi_hest_generic_data *gdata;
654 int sec_no = 0;
655 char newpfx[64];
656 __u16 severity;
657
658 severity = estatus->error_severity;
659 if (severity == CPER_SEV_CORRECTED)
660 printk("%s%s\n", pfx,
661 "It has been corrected by h/w "
662 "and requires no further action");
663 printk("%s""event severity: %s\n", pfx, cper_severity_str(severity));
664 snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
665
666 apei_estatus_for_each_section(estatus, gdata) {
667 cper_estatus_print_section(newpfx, gdata, sec_no);
668 sec_no++;
669 }
670}
671EXPORT_SYMBOL_GPL(cper_estatus_print);
672
673int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus)
674{
675 if (estatus->data_length &&
676 estatus->data_length < sizeof(struct acpi_hest_generic_data))
677 return -EINVAL;
678 if (estatus->raw_data_length &&
679 estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
680 return -EINVAL;
681
682 return 0;
683}
684EXPORT_SYMBOL_GPL(cper_estatus_check_header);
685
686int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
687{
688 struct acpi_hest_generic_data *gdata;
689 unsigned int data_len, record_size;
690 int rc;
691
692 rc = cper_estatus_check_header(estatus);
693 if (rc)
694 return rc;
695
696 data_len = estatus->data_length;
697
698 apei_estatus_for_each_section(estatus, gdata) {
699 if (acpi_hest_get_size(gdata) > data_len)
700 return -EINVAL;
701
702 record_size = acpi_hest_get_record_size(gdata);
703 if (record_size > data_len)
704 return -EINVAL;
705
706 data_len -= record_size;
707 }
708 if (data_len)
709 return -EINVAL;
710
711 return 0;
712}
713EXPORT_SYMBOL_GPL(cper_estatus_check);
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
28static char rcd_decode_str[CPER_REC_LEN];
29
30/*
31 * CPER record ID need to be unique even after reboot, because record
32 * ID is used as index for ERST storage, while CPER records from
33 * multiple boot may co-exist in ERST.
34 */
35u64 cper_next_record_id(void)
36{
37 static atomic64_t seq;
38
39 if (!atomic64_read(&seq)) {
40 time64_t time = ktime_get_real_seconds();
41
42 /*
43 * This code is unlikely to still be needed in year 2106,
44 * but just in case, let's use a few more bits for timestamps
45 * after y2038 to be sure they keep increasing monotonically
46 * for the next few hundred years...
47 */
48 if (time < 0x80000000)
49 atomic64_set(&seq, (ktime_get_real_seconds()) << 32);
50 else
51 atomic64_set(&seq, 0x8000000000000000ull |
52 ktime_get_real_seconds() << 24);
53 }
54
55 return atomic64_inc_return(&seq);
56}
57EXPORT_SYMBOL_GPL(cper_next_record_id);
58
59static const char * const severity_strs[] = {
60 "recoverable",
61 "fatal",
62 "corrected",
63 "info",
64};
65
66const char *cper_severity_str(unsigned int severity)
67{
68 return severity < ARRAY_SIZE(severity_strs) ?
69 severity_strs[severity] : "unknown";
70}
71EXPORT_SYMBOL_GPL(cper_severity_str);
72
73/*
74 * cper_print_bits - print strings for set bits
75 * @pfx: prefix for each line, including log level and prefix string
76 * @bits: bit mask
77 * @strs: string array, indexed by bit position
78 * @strs_size: size of the string array: @strs
79 *
80 * For each set bit in @bits, print the corresponding string in @strs.
81 * If the output length is longer than 80, multiple line will be
82 * printed, with @pfx is printed at the beginning of each line.
83 */
84void cper_print_bits(const char *pfx, unsigned int bits,
85 const char * const strs[], unsigned int strs_size)
86{
87 int i, len = 0;
88 const char *str;
89 char buf[84];
90
91 for (i = 0; i < strs_size; i++) {
92 if (!(bits & (1U << i)))
93 continue;
94 str = strs[i];
95 if (!str)
96 continue;
97 if (len && len + strlen(str) + 2 > 80) {
98 printk("%s\n", buf);
99 len = 0;
100 }
101 if (!len)
102 len = snprintf(buf, sizeof(buf), "%s%s", pfx, str);
103 else
104 len += scnprintf(buf+len, sizeof(buf)-len, ", %s", str);
105 }
106 if (len)
107 printk("%s\n", buf);
108}
109
110static const char * const proc_type_strs[] = {
111 "IA32/X64",
112 "IA64",
113 "ARM",
114};
115
116static const char * const proc_isa_strs[] = {
117 "IA32",
118 "IA64",
119 "X64",
120 "ARM A32/T32",
121 "ARM A64",
122};
123
124const char * const cper_proc_error_type_strs[] = {
125 "cache error",
126 "TLB error",
127 "bus error",
128 "micro-architectural error",
129};
130
131static const char * const proc_op_strs[] = {
132 "unknown or generic",
133 "data read",
134 "data write",
135 "instruction execution",
136};
137
138static const char * const proc_flag_strs[] = {
139 "restartable",
140 "precise IP",
141 "overflow",
142 "corrected",
143};
144
145static void cper_print_proc_generic(const char *pfx,
146 const struct cper_sec_proc_generic *proc)
147{
148 if (proc->validation_bits & CPER_PROC_VALID_TYPE)
149 printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type,
150 proc->proc_type < ARRAY_SIZE(proc_type_strs) ?
151 proc_type_strs[proc->proc_type] : "unknown");
152 if (proc->validation_bits & CPER_PROC_VALID_ISA)
153 printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa,
154 proc->proc_isa < ARRAY_SIZE(proc_isa_strs) ?
155 proc_isa_strs[proc->proc_isa] : "unknown");
156 if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) {
157 printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type);
158 cper_print_bits(pfx, proc->proc_error_type,
159 cper_proc_error_type_strs,
160 ARRAY_SIZE(cper_proc_error_type_strs));
161 }
162 if (proc->validation_bits & CPER_PROC_VALID_OPERATION)
163 printk("%s""operation: %d, %s\n", pfx, proc->operation,
164 proc->operation < ARRAY_SIZE(proc_op_strs) ?
165 proc_op_strs[proc->operation] : "unknown");
166 if (proc->validation_bits & CPER_PROC_VALID_FLAGS) {
167 printk("%s""flags: 0x%02x\n", pfx, proc->flags);
168 cper_print_bits(pfx, proc->flags, proc_flag_strs,
169 ARRAY_SIZE(proc_flag_strs));
170 }
171 if (proc->validation_bits & CPER_PROC_VALID_LEVEL)
172 printk("%s""level: %d\n", pfx, proc->level);
173 if (proc->validation_bits & CPER_PROC_VALID_VERSION)
174 printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version);
175 if (proc->validation_bits & CPER_PROC_VALID_ID)
176 printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id);
177 if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS)
178 printk("%s""target_address: 0x%016llx\n",
179 pfx, proc->target_addr);
180 if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID)
181 printk("%s""requestor_id: 0x%016llx\n",
182 pfx, proc->requestor_id);
183 if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID)
184 printk("%s""responder_id: 0x%016llx\n",
185 pfx, proc->responder_id);
186 if (proc->validation_bits & CPER_PROC_VALID_IP)
187 printk("%s""IP: 0x%016llx\n", pfx, proc->ip);
188}
189
190static const char * const mem_err_type_strs[] = {
191 "unknown",
192 "no error",
193 "single-bit ECC",
194 "multi-bit ECC",
195 "single-symbol chipkill ECC",
196 "multi-symbol chipkill ECC",
197 "master abort",
198 "target abort",
199 "parity error",
200 "watchdog timeout",
201 "invalid address",
202 "mirror Broken",
203 "memory sparing",
204 "scrub corrected error",
205 "scrub uncorrected error",
206 "physical memory map-out event",
207};
208
209const char *cper_mem_err_type_str(unsigned int etype)
210{
211 return etype < ARRAY_SIZE(mem_err_type_strs) ?
212 mem_err_type_strs[etype] : "unknown";
213}
214EXPORT_SYMBOL_GPL(cper_mem_err_type_str);
215
216static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
217{
218 u32 len, n;
219
220 if (!msg)
221 return 0;
222
223 n = 0;
224 len = CPER_REC_LEN - 1;
225 if (mem->validation_bits & CPER_MEM_VALID_NODE)
226 n += scnprintf(msg + n, len - n, "node: %d ", mem->node);
227 if (mem->validation_bits & CPER_MEM_VALID_CARD)
228 n += scnprintf(msg + n, len - n, "card: %d ", mem->card);
229 if (mem->validation_bits & CPER_MEM_VALID_MODULE)
230 n += scnprintf(msg + n, len - n, "module: %d ", mem->module);
231 if (mem->validation_bits & CPER_MEM_VALID_RANK_NUMBER)
232 n += scnprintf(msg + n, len - n, "rank: %d ", mem->rank);
233 if (mem->validation_bits & CPER_MEM_VALID_BANK)
234 n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
235 if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
236 n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
237 if (mem->validation_bits & CPER_MEM_VALID_ROW)
238 n += scnprintf(msg + n, len - n, "row: %d ", mem->row);
239 if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
240 n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
241 if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
242 n += scnprintf(msg + n, len - n, "bit_position: %d ",
243 mem->bit_pos);
244 if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
245 n += scnprintf(msg + n, len - n, "requestor_id: 0x%016llx ",
246 mem->requestor_id);
247 if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
248 n += scnprintf(msg + n, len - n, "responder_id: 0x%016llx ",
249 mem->responder_id);
250 if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
251 scnprintf(msg + n, len - n, "target_id: 0x%016llx ",
252 mem->target_id);
253
254 msg[n] = '\0';
255 return n;
256}
257
258static int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
259{
260 u32 len, n;
261 const char *bank = NULL, *device = NULL;
262
263 if (!msg || !(mem->validation_bits & CPER_MEM_VALID_MODULE_HANDLE))
264 return 0;
265
266 n = 0;
267 len = CPER_REC_LEN - 1;
268 dmi_memdev_name(mem->mem_dev_handle, &bank, &device);
269 if (bank && device)
270 n = snprintf(msg, len, "DIMM location: %s %s ", bank, device);
271 else
272 n = snprintf(msg, len,
273 "DIMM location: not present. DMI handle: 0x%.4x ",
274 mem->mem_dev_handle);
275
276 msg[n] = '\0';
277 return n;
278}
279
280void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
281 struct cper_mem_err_compact *cmem)
282{
283 cmem->validation_bits = mem->validation_bits;
284 cmem->node = mem->node;
285 cmem->card = mem->card;
286 cmem->module = mem->module;
287 cmem->bank = mem->bank;
288 cmem->device = mem->device;
289 cmem->row = mem->row;
290 cmem->column = mem->column;
291 cmem->bit_pos = mem->bit_pos;
292 cmem->requestor_id = mem->requestor_id;
293 cmem->responder_id = mem->responder_id;
294 cmem->target_id = mem->target_id;
295 cmem->rank = mem->rank;
296 cmem->mem_array_handle = mem->mem_array_handle;
297 cmem->mem_dev_handle = mem->mem_dev_handle;
298}
299
300const char *cper_mem_err_unpack(struct trace_seq *p,
301 struct cper_mem_err_compact *cmem)
302{
303 const char *ret = trace_seq_buffer_ptr(p);
304
305 if (cper_mem_err_location(cmem, rcd_decode_str))
306 trace_seq_printf(p, "%s", rcd_decode_str);
307 if (cper_dimm_err_location(cmem, rcd_decode_str))
308 trace_seq_printf(p, "%s", rcd_decode_str);
309 trace_seq_putc(p, '\0');
310
311 return ret;
312}
313
314static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
315 int len)
316{
317 struct cper_mem_err_compact cmem;
318
319 /* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
320 if (len == sizeof(struct cper_sec_mem_err_old) &&
321 (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
322 pr_err(FW_WARN "valid bits set for fields beyond structure\n");
323 return;
324 }
325 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
326 printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
327 if (mem->validation_bits & CPER_MEM_VALID_PA)
328 printk("%s""physical_address: 0x%016llx\n",
329 pfx, mem->physical_addr);
330 if (mem->validation_bits & CPER_MEM_VALID_PA_MASK)
331 printk("%s""physical_address_mask: 0x%016llx\n",
332 pfx, mem->physical_addr_mask);
333 cper_mem_err_pack(mem, &cmem);
334 if (cper_mem_err_location(&cmem, rcd_decode_str))
335 printk("%s%s\n", pfx, rcd_decode_str);
336 if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
337 u8 etype = mem->error_type;
338 printk("%s""error_type: %d, %s\n", pfx, etype,
339 cper_mem_err_type_str(etype));
340 }
341 if (cper_dimm_err_location(&cmem, rcd_decode_str))
342 printk("%s%s\n", pfx, rcd_decode_str);
343}
344
345static const char * const pcie_port_type_strs[] = {
346 "PCIe end point",
347 "legacy PCI end point",
348 "unknown",
349 "unknown",
350 "root port",
351 "upstream switch port",
352 "downstream switch port",
353 "PCIe to PCI/PCI-X bridge",
354 "PCI/PCI-X to PCIe bridge",
355 "root complex integrated endpoint device",
356 "root complex event collector",
357};
358
359static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
360 const struct acpi_hest_generic_data *gdata)
361{
362 if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
363 printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
364 pcie->port_type < ARRAY_SIZE(pcie_port_type_strs) ?
365 pcie_port_type_strs[pcie->port_type] : "unknown");
366 if (pcie->validation_bits & CPER_PCIE_VALID_VERSION)
367 printk("%s""version: %d.%d\n", pfx,
368 pcie->version.major, pcie->version.minor);
369 if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS)
370 printk("%s""command: 0x%04x, status: 0x%04x\n", pfx,
371 pcie->command, pcie->status);
372 if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) {
373 const __u8 *p;
374 printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx,
375 pcie->device_id.segment, pcie->device_id.bus,
376 pcie->device_id.device, pcie->device_id.function);
377 printk("%s""slot: %d\n", pfx,
378 pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT);
379 printk("%s""secondary_bus: 0x%02x\n", pfx,
380 pcie->device_id.secondary_bus);
381 printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx,
382 pcie->device_id.vendor_id, pcie->device_id.device_id);
383 p = pcie->device_id.class_code;
384 printk("%s""class_code: %02x%02x%02x\n", pfx, p[2], p[1], p[0]);
385 }
386 if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER)
387 printk("%s""serial number: 0x%04x, 0x%04x\n", pfx,
388 pcie->serial_number.lower, pcie->serial_number.upper);
389 if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS)
390 printk(
391 "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
392 pfx, pcie->bridge.secondary_status, pcie->bridge.control);
393
394 /* Fatal errors call __ghes_panic() before AER handler prints this */
395 if ((pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) &&
396 (gdata->error_severity & CPER_SEV_FATAL)) {
397 struct aer_capability_regs *aer;
398
399 aer = (struct aer_capability_regs *)pcie->aer_info;
400 printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n",
401 pfx, aer->uncor_status, aer->uncor_mask);
402 printk("%saer_uncor_severity: 0x%08x\n",
403 pfx, aer->uncor_severity);
404 printk("%sTLP Header: %08x %08x %08x %08x\n", pfx,
405 aer->header_log.dw0, aer->header_log.dw1,
406 aer->header_log.dw2, aer->header_log.dw3);
407 }
408}
409
410static const char * const fw_err_rec_type_strs[] = {
411 "IPF SAL Error Record",
412 "SOC Firmware Error Record Type1 (Legacy CrashLog Support)",
413 "SOC Firmware Error Record Type2",
414};
415
416static void cper_print_fw_err(const char *pfx,
417 struct acpi_hest_generic_data *gdata,
418 const struct cper_sec_fw_err_rec_ref *fw_err)
419{
420 void *buf = acpi_hest_get_payload(gdata);
421 u32 offset, length = gdata->error_data_length;
422
423 printk("%s""Firmware Error Record Type: %s\n", pfx,
424 fw_err->record_type < ARRAY_SIZE(fw_err_rec_type_strs) ?
425 fw_err_rec_type_strs[fw_err->record_type] : "unknown");
426 printk("%s""Revision: %d\n", pfx, fw_err->revision);
427
428 /* Record Type based on UEFI 2.7 */
429 if (fw_err->revision == 0) {
430 printk("%s""Record Identifier: %08llx\n", pfx,
431 fw_err->record_identifier);
432 } else if (fw_err->revision == 2) {
433 printk("%s""Record Identifier: %pUl\n", pfx,
434 &fw_err->record_identifier_guid);
435 }
436
437 /*
438 * The FW error record may contain trailing data beyond the
439 * structure defined by the specification. As the fields
440 * defined (and hence the offset of any trailing data) vary
441 * with the revision, set the offset to account for this
442 * variation.
443 */
444 if (fw_err->revision == 0) {
445 /* record_identifier_guid not defined */
446 offset = offsetof(struct cper_sec_fw_err_rec_ref,
447 record_identifier_guid);
448 } else if (fw_err->revision == 1) {
449 /* record_identifier not defined */
450 offset = offsetof(struct cper_sec_fw_err_rec_ref,
451 record_identifier);
452 } else {
453 offset = sizeof(*fw_err);
454 }
455
456 buf += offset;
457 length -= offset;
458
459 print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, buf, length, true);
460}
461
462static void cper_print_tstamp(const char *pfx,
463 struct acpi_hest_generic_data_v300 *gdata)
464{
465 __u8 hour, min, sec, day, mon, year, century, *timestamp;
466
467 if (gdata->validation_bits & ACPI_HEST_GEN_VALID_TIMESTAMP) {
468 timestamp = (__u8 *)&(gdata->time_stamp);
469 sec = bcd2bin(timestamp[0]);
470 min = bcd2bin(timestamp[1]);
471 hour = bcd2bin(timestamp[2]);
472 day = bcd2bin(timestamp[4]);
473 mon = bcd2bin(timestamp[5]);
474 year = bcd2bin(timestamp[6]);
475 century = bcd2bin(timestamp[7]);
476
477 printk("%s%ststamp: %02d%02d-%02d-%02d %02d:%02d:%02d\n", pfx,
478 (timestamp[3] & 0x1 ? "precise " : "imprecise "),
479 century, year, mon, day, hour, min, sec);
480 }
481}
482
483static void
484cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata,
485 int sec_no)
486{
487 guid_t *sec_type = (guid_t *)gdata->section_type;
488 __u16 severity;
489 char newpfx[64];
490
491 if (acpi_hest_get_version(gdata) >= 3)
492 cper_print_tstamp(pfx, (struct acpi_hest_generic_data_v300 *)gdata);
493
494 severity = gdata->error_severity;
495 printk("%s""Error %d, type: %s\n", pfx, sec_no,
496 cper_severity_str(severity));
497 if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
498 printk("%s""fru_id: %pUl\n", pfx, gdata->fru_id);
499 if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
500 printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text);
501
502 snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
503 if (guid_equal(sec_type, &CPER_SEC_PROC_GENERIC)) {
504 struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata);
505
506 printk("%s""section_type: general processor error\n", newpfx);
507 if (gdata->error_data_length >= sizeof(*proc_err))
508 cper_print_proc_generic(newpfx, proc_err);
509 else
510 goto err_section_too_small;
511 } else if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
512 struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);
513
514 printk("%s""section_type: memory error\n", newpfx);
515 if (gdata->error_data_length >=
516 sizeof(struct cper_sec_mem_err_old))
517 cper_print_mem(newpfx, mem_err,
518 gdata->error_data_length);
519 else
520 goto err_section_too_small;
521 } else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
522 struct cper_sec_pcie *pcie = acpi_hest_get_payload(gdata);
523
524 printk("%s""section_type: PCIe error\n", newpfx);
525 if (gdata->error_data_length >= sizeof(*pcie))
526 cper_print_pcie(newpfx, pcie, gdata);
527 else
528 goto err_section_too_small;
529#if defined(CONFIG_ARM64) || defined(CONFIG_ARM)
530 } else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
531 struct cper_sec_proc_arm *arm_err = acpi_hest_get_payload(gdata);
532
533 printk("%ssection_type: ARM processor error\n", newpfx);
534 if (gdata->error_data_length >= sizeof(*arm_err))
535 cper_print_proc_arm(newpfx, arm_err);
536 else
537 goto err_section_too_small;
538#endif
539#if defined(CONFIG_UEFI_CPER_X86)
540 } else if (guid_equal(sec_type, &CPER_SEC_PROC_IA)) {
541 struct cper_sec_proc_ia *ia_err = acpi_hest_get_payload(gdata);
542
543 printk("%ssection_type: IA32/X64 processor error\n", newpfx);
544 if (gdata->error_data_length >= sizeof(*ia_err))
545 cper_print_proc_ia(newpfx, ia_err);
546 else
547 goto err_section_too_small;
548#endif
549 } else if (guid_equal(sec_type, &CPER_SEC_FW_ERR_REC_REF)) {
550 struct cper_sec_fw_err_rec_ref *fw_err = acpi_hest_get_payload(gdata);
551
552 printk("%ssection_type: Firmware Error Record Reference\n",
553 newpfx);
554 /* The minimal FW Error Record contains 16 bytes */
555 if (gdata->error_data_length >= SZ_16)
556 cper_print_fw_err(newpfx, gdata, fw_err);
557 else
558 goto err_section_too_small;
559 } else {
560 const void *err = acpi_hest_get_payload(gdata);
561
562 printk("%ssection type: unknown, %pUl\n", newpfx, sec_type);
563 printk("%ssection length: %#x\n", newpfx,
564 gdata->error_data_length);
565 print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, err,
566 gdata->error_data_length, true);
567 }
568
569 return;
570
571err_section_too_small:
572 pr_err(FW_WARN "error section length is too small\n");
573}
574
575void cper_estatus_print(const char *pfx,
576 const struct acpi_hest_generic_status *estatus)
577{
578 struct acpi_hest_generic_data *gdata;
579 int sec_no = 0;
580 char newpfx[64];
581 __u16 severity;
582
583 severity = estatus->error_severity;
584 if (severity == CPER_SEV_CORRECTED)
585 printk("%s%s\n", pfx,
586 "It has been corrected by h/w "
587 "and requires no further action");
588 printk("%s""event severity: %s\n", pfx, cper_severity_str(severity));
589 snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
590
591 apei_estatus_for_each_section(estatus, gdata) {
592 cper_estatus_print_section(newpfx, gdata, sec_no);
593 sec_no++;
594 }
595}
596EXPORT_SYMBOL_GPL(cper_estatus_print);
597
598int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus)
599{
600 if (estatus->data_length &&
601 estatus->data_length < sizeof(struct acpi_hest_generic_data))
602 return -EINVAL;
603 if (estatus->raw_data_length &&
604 estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
605 return -EINVAL;
606
607 return 0;
608}
609EXPORT_SYMBOL_GPL(cper_estatus_check_header);
610
611int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
612{
613 struct acpi_hest_generic_data *gdata;
614 unsigned int data_len, record_size;
615 int rc;
616
617 rc = cper_estatus_check_header(estatus);
618 if (rc)
619 return rc;
620
621 data_len = estatus->data_length;
622
623 apei_estatus_for_each_section(estatus, gdata) {
624 if (sizeof(struct acpi_hest_generic_data) > data_len)
625 return -EINVAL;
626
627 record_size = acpi_hest_get_record_size(gdata);
628 if (record_size > data_len)
629 return -EINVAL;
630
631 data_len -= record_size;
632 }
633 if (data_len)
634 return -EINVAL;
635
636 return 0;
637}
638EXPORT_SYMBOL_GPL(cper_estatus_check);