2 * UEFI Common Platform Error Record (CPER) support
4 * Copyright (C) 2010, Intel Corp.
7 * CPER is the format used to describe platform hardware error by
8 * various APEI tables, such as ERST, BERT and HEST etc.
10 * For more information about CPER, please refer to Appendix N of UEFI
11 * Specification version 2.3.
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/acpi.h>
32 #include <linux/aer.h>
35 * CPER record ID need to be unique even after reboot, because record
36 * ID is used as index for ERST storage, while CPER records from
37 * multiple boot may co-exist in ERST.
39 u64 cper_next_record_id(void)
41 static atomic64_t seq;
43 if (!atomic64_read(&seq))
44 atomic64_set(&seq, ((u64)get_seconds()) << 32);
46 return atomic64_inc_return(&seq);
48 EXPORT_SYMBOL_GPL(cper_next_record_id);
50 static const char *cper_severity_strs[] = {
57 static const char *cper_severity_str(unsigned int severity)
59 return severity < ARRAY_SIZE(cper_severity_strs) ?
60 cper_severity_strs[severity] : "unknown";
64 * cper_print_bits - print strings for set bits
65 * @pfx: prefix for each line, including log level and prefix string
67 * @strs: string array, indexed by bit position
68 * @strs_size: size of the string array: @strs
70 * For each set bit in @bits, print the corresponding string in @strs.
71 * If the output length is longer than 80, multiple line will be
72 * printed, with @pfx is printed at the beginning of each line.
74 void cper_print_bits(const char *pfx, unsigned int bits,
75 const char *strs[], unsigned int strs_size)
81 for (i = 0; i < strs_size; i++) {
82 if (!(bits & (1U << i)))
87 if (len && len + strlen(str) + 2 > 80) {
92 len = snprintf(buf, sizeof(buf), "%s%s", pfx, str);
94 len += snprintf(buf+len, sizeof(buf)-len, ", %s", str);
100 static const char *cper_proc_type_strs[] = {
105 static const char *cper_proc_isa_strs[] = {
111 static const char *cper_proc_error_type_strs[] = {
115 "micro-architectural error",
118 static const char *cper_proc_op_strs[] = {
119 "unknown or generic",
122 "instruction execution",
125 static const char *cper_proc_flag_strs[] = {
132 static void cper_print_proc_generic(const char *pfx,
133 const struct cper_sec_proc_generic *proc)
135 if (proc->validation_bits & CPER_PROC_VALID_TYPE)
136 printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type,
137 proc->proc_type < ARRAY_SIZE(cper_proc_type_strs) ?
138 cper_proc_type_strs[proc->proc_type] : "unknown");
139 if (proc->validation_bits & CPER_PROC_VALID_ISA)
140 printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa,
141 proc->proc_isa < ARRAY_SIZE(cper_proc_isa_strs) ?
142 cper_proc_isa_strs[proc->proc_isa] : "unknown");
143 if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) {
144 printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type);
145 cper_print_bits(pfx, proc->proc_error_type,
146 cper_proc_error_type_strs,
147 ARRAY_SIZE(cper_proc_error_type_strs));
149 if (proc->validation_bits & CPER_PROC_VALID_OPERATION)
150 printk("%s""operation: %d, %s\n", pfx, proc->operation,
151 proc->operation < ARRAY_SIZE(cper_proc_op_strs) ?
152 cper_proc_op_strs[proc->operation] : "unknown");
153 if (proc->validation_bits & CPER_PROC_VALID_FLAGS) {
154 printk("%s""flags: 0x%02x\n", pfx, proc->flags);
155 cper_print_bits(pfx, proc->flags, cper_proc_flag_strs,
156 ARRAY_SIZE(cper_proc_flag_strs));
158 if (proc->validation_bits & CPER_PROC_VALID_LEVEL)
159 printk("%s""level: %d\n", pfx, proc->level);
160 if (proc->validation_bits & CPER_PROC_VALID_VERSION)
161 printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version);
162 if (proc->validation_bits & CPER_PROC_VALID_ID)
163 printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id);
164 if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS)
165 printk("%s""target_address: 0x%016llx\n",
166 pfx, proc->target_addr);
167 if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID)
168 printk("%s""requestor_id: 0x%016llx\n",
169 pfx, proc->requestor_id);
170 if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID)
171 printk("%s""responder_id: 0x%016llx\n",
172 pfx, proc->responder_id);
173 if (proc->validation_bits & CPER_PROC_VALID_IP)
174 printk("%s""IP: 0x%016llx\n", pfx, proc->ip);
177 static const char *cper_mem_err_type_strs[] = {
182 "single-symbol chipkill ECC",
183 "multi-symbol chipkill ECC",
191 "scrub corrected error",
192 "scrub uncorrected error",
195 static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem)
197 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
198 printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
199 if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS)
200 printk("%s""physical_address: 0x%016llx\n",
201 pfx, mem->physical_addr);
202 if (mem->validation_bits & CPER_MEM_VALID_PHYSICAL_ADDRESS_MASK)
203 printk("%s""physical_address_mask: 0x%016llx\n",
204 pfx, mem->physical_addr_mask);
205 if (mem->validation_bits & CPER_MEM_VALID_NODE)
206 printk("%s""node: %d\n", pfx, mem->node);
207 if (mem->validation_bits & CPER_MEM_VALID_CARD)
208 printk("%s""card: %d\n", pfx, mem->card);
209 if (mem->validation_bits & CPER_MEM_VALID_MODULE)
210 printk("%s""module: %d\n", pfx, mem->module);
211 if (mem->validation_bits & CPER_MEM_VALID_BANK)
212 printk("%s""bank: %d\n", pfx, mem->bank);
213 if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
214 printk("%s""device: %d\n", pfx, mem->device);
215 if (mem->validation_bits & CPER_MEM_VALID_ROW)
216 printk("%s""row: %d\n", pfx, mem->row);
217 if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
218 printk("%s""column: %d\n", pfx, mem->column);
219 if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
220 printk("%s""bit_position: %d\n", pfx, mem->bit_pos);
221 if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
222 printk("%s""requestor_id: 0x%016llx\n", pfx, mem->requestor_id);
223 if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
224 printk("%s""responder_id: 0x%016llx\n", pfx, mem->responder_id);
225 if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
226 printk("%s""target_id: 0x%016llx\n", pfx, mem->target_id);
227 if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
228 u8 etype = mem->error_type;
229 printk("%s""error_type: %d, %s\n", pfx, etype,
230 etype < ARRAY_SIZE(cper_mem_err_type_strs) ?
231 cper_mem_err_type_strs[etype] : "unknown");
235 static const char *cper_pcie_port_type_strs[] = {
237 "legacy PCI end point",
241 "upstream switch port",
242 "downstream switch port",
243 "PCIe to PCI/PCI-X bridge",
244 "PCI/PCI-X to PCIe bridge",
245 "root complex integrated endpoint device",
246 "root complex event collector",
249 static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
250 const struct acpi_hest_generic_data *gdata)
252 if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
253 printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
254 pcie->port_type < ARRAY_SIZE(cper_pcie_port_type_strs) ?
255 cper_pcie_port_type_strs[pcie->port_type] : "unknown");
256 if (pcie->validation_bits & CPER_PCIE_VALID_VERSION)
257 printk("%s""version: %d.%d\n", pfx,
258 pcie->version.major, pcie->version.minor);
259 if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS)
260 printk("%s""command: 0x%04x, status: 0x%04x\n", pfx,
261 pcie->command, pcie->status);
262 if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) {
264 printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx,
265 pcie->device_id.segment, pcie->device_id.bus,
266 pcie->device_id.device, pcie->device_id.function);
267 printk("%s""slot: %d\n", pfx,
268 pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT);
269 printk("%s""secondary_bus: 0x%02x\n", pfx,
270 pcie->device_id.secondary_bus);
271 printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx,
272 pcie->device_id.vendor_id, pcie->device_id.device_id);
273 p = pcie->device_id.class_code;
274 printk("%s""class_code: %02x%02x%02x\n", pfx, p[0], p[1], p[2]);
276 if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER)
277 printk("%s""serial number: 0x%04x, 0x%04x\n", pfx,
278 pcie->serial_number.lower, pcie->serial_number.upper);
279 if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS)
281 "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
282 pfx, pcie->bridge.secondary_status, pcie->bridge.control);
283 #ifdef CONFIG_ACPI_APEI_PCIEAER
284 if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) {
285 struct aer_capability_regs *aer_regs = (void *)pcie->aer_info;
286 cper_print_aer(pfx, gdata->error_severity, aer_regs);
291 static const char *apei_estatus_section_flag_strs[] = {
293 "containment warning",
295 "threshold exceeded",
296 "resource not accessible",
300 static void apei_estatus_print_section(
301 const char *pfx, const struct acpi_hest_generic_data *gdata, int sec_no)
303 uuid_le *sec_type = (uuid_le *)gdata->section_type;
306 severity = gdata->error_severity;
307 printk("%s""section: %d, severity: %d, %s\n", pfx, sec_no, severity,
308 cper_severity_str(severity));
309 printk("%s""flags: 0x%02x\n", pfx, gdata->flags);
310 cper_print_bits(pfx, gdata->flags, apei_estatus_section_flag_strs,
311 ARRAY_SIZE(apei_estatus_section_flag_strs));
312 if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
313 printk("%s""fru_id: %pUl\n", pfx, (uuid_le *)gdata->fru_id);
314 if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
315 printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text);
317 if (!uuid_le_cmp(*sec_type, CPER_SEC_PROC_GENERIC)) {
318 struct cper_sec_proc_generic *proc_err = (void *)(gdata + 1);
319 printk("%s""section_type: general processor error\n", pfx);
320 if (gdata->error_data_length >= sizeof(*proc_err))
321 cper_print_proc_generic(pfx, proc_err);
323 goto err_section_too_small;
324 } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PLATFORM_MEM)) {
325 struct cper_sec_mem_err *mem_err = (void *)(gdata + 1);
326 printk("%s""section_type: memory error\n", pfx);
327 if (gdata->error_data_length >= sizeof(*mem_err))
328 cper_print_mem(pfx, mem_err);
330 goto err_section_too_small;
331 } else if (!uuid_le_cmp(*sec_type, CPER_SEC_PCIE)) {
332 struct cper_sec_pcie *pcie = (void *)(gdata + 1);
333 printk("%s""section_type: PCIe error\n", pfx);
334 if (gdata->error_data_length >= sizeof(*pcie))
335 cper_print_pcie(pfx, pcie, gdata);
337 goto err_section_too_small;
339 printk("%s""section type: unknown, %pUl\n", pfx, sec_type);
343 err_section_too_small:
344 pr_err(FW_WARN "error section length is too small\n");
347 void apei_estatus_print(const char *pfx,
348 const struct acpi_hest_generic_status *estatus)
350 struct acpi_hest_generic_data *gdata;
351 unsigned int data_len, gedata_len;
355 printk("%s""APEI generic hardware error status\n", pfx);
356 severity = estatus->error_severity;
357 printk("%s""severity: %d, %s\n", pfx, severity,
358 cper_severity_str(severity));
359 data_len = estatus->data_length;
360 gdata = (struct acpi_hest_generic_data *)(estatus + 1);
361 while (data_len > sizeof(*gdata)) {
362 gedata_len = gdata->error_data_length;
363 apei_estatus_print_section(pfx, gdata, sec_no);
364 data_len -= gedata_len + sizeof(*gdata);
365 gdata = (void *)(gdata + 1) + gedata_len;
369 EXPORT_SYMBOL_GPL(apei_estatus_print);
371 int apei_estatus_check_header(const struct acpi_hest_generic_status *estatus)
373 if (estatus->data_length &&
374 estatus->data_length < sizeof(struct acpi_hest_generic_data))
376 if (estatus->raw_data_length &&
377 estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
382 EXPORT_SYMBOL_GPL(apei_estatus_check_header);
384 int apei_estatus_check(const struct acpi_hest_generic_status *estatus)
386 struct acpi_hest_generic_data *gdata;
387 unsigned int data_len, gedata_len;
390 rc = apei_estatus_check_header(estatus);
393 data_len = estatus->data_length;
394 gdata = (struct acpi_hest_generic_data *)(estatus + 1);
395 while (data_len > sizeof(*gdata)) {
396 gedata_len = gdata->error_data_length;
397 if (gedata_len > data_len - sizeof(*gdata))
399 data_len -= gedata_len + sizeof(*gdata);
400 gdata = (void *)(gdata + 1) + gedata_len;
407 EXPORT_SYMBOL_GPL(apei_estatus_check);