mt76/mt7915/coredump.c

12 MODULE_PARM_DESC(coredump_memdump, "Optional ability to dump firmware memory");
144 mt7915_coredump_fw_state(struct mt7915_dev *dev, struct mt7915_coredump *dump,
157 		strscpy(dump->fw_state, "normal", sizeof(dump->fw_state));
159 		strscpy(dump->fw_state, "assert", sizeof(dump->fw_state));
161 		strscpy(dump->fw_state, "exception", sizeof(dump->fw_state));
167 mt7915_coredump_fw_trace(struct mt7915_dev *dev, struct mt7915_coredump *dump,
173 	dump->last_msg_id = mt76_rr(dev, MT_FW_LAST_MSG_ID);
178 	dump->eint_info_idx = n;
183 	dump->irq_info_idx = n;
188 	dump->sched_info_idx = n;
198 		strscpy(dump->trace_sched, "(sched_info) id, time",
199 			sizeof(dump->trace_sched));
201 		for (y = dump->sched_info_idx, i = 0; i < n; i++, y++) {
202 			mt7915_memcpy_fromio(dev, dump->sched, base + 0xc + y * 12,
203 					     sizeof(dump->sched));
212 		strscpy(dump->trace_irq, "(irq_info) id, time",
213 			sizeof(dump->trace_irq));
215 		for (y = dump->irq_info_idx, i = 0; i < n; i++, y++) {
216 			mt7915_memcpy_fromio(dev, dump->irq, base + 0x4 + y * 16,
217 					     sizeof(dump->irq));
224 mt7915_coredump_fw_stack(struct mt7915_dev *dev, struct mt7915_coredump *dump,
236 		dump->call_stack[i] = mt76_rr(dev, 0x89050204 + idx * 4);
245 mt7915_coredump_fw_task(struct mt7915_dev *dev, struct mt7915_coredump *dump)
249 	strscpy(dump->task_qid, "(task queue id) read, write",
250 		sizeof(dump->task_qid));
252 	dump->taskq[0].read = mt76_rr(dev, MT_FW_TASK_QID1);
253 	dump->taskq[0].write = mt76_rr(dev, MT_FW_TASK_QID1 - 4);
254 	dump->taskq[1].read = mt76_rr(dev, MT_FW_TASK_QID2);
255 	dump->taskq[1].write = mt76_rr(dev, MT_FW_TASK_QID2 - 4);
257 	strscpy(dump->task_info, "(task stack) start, end, size",
258 		sizeof(dump->task_info));
260 	dump->taski[0].start = mt76_rr(dev, MT_FW_TASK_START);
261 	dump->taski[0].end = mt76_rr(dev, MT_FW_TASK_END);
262 	dump->taski[0].size = mt76_rr(dev, MT_FW_TASK_SIZE);
263 	dump->taski[1].start = mt76_rr(dev, MT_FW_TASK_START + offs);
264 	dump->taski[1].end = mt76_rr(dev, MT_FW_TASK_END + offs);
265 	dump->taski[1].size = mt76_rr(dev, MT_FW_TASK_SIZE + offs);
269 mt7915_coredump_fw_context(struct mt7915_dev *dev, struct mt7915_coredump *dump)
277 		strscpy(dump->fw_context, "(context) interrupt",
278 			sizeof(dump->fw_context));
283 		dump->context.idx = idx;
284 		dump->context.handler = mt76_rr(dev, MT_FW_CIRQ_LISR);
290 			strscpy(dump->fw_context, "(context) idle",
291 				sizeof(dump->fw_context));
293 			strscpy(dump->fw_context, "(context) task",
294 				sizeof(dump->fw_context));
296 			dump->context.idx = idx;
297 			dump->context.handler = id;
305 	struct mt7915_coredump *dump;
307 	size_t len, sofar = 0, hdr_len = sizeof(*dump);
327 	dump = (struct mt7915_coredump *)(buf);
328 	dump->len = len;
331 	strscpy(dump->magic, "mt76-crash-dump", sizeof(dump->magic));
332 	strscpy(dump->kernel, init_utsname()->release, sizeof(dump->kernel));
333 	strscpy(dump->fw_ver, dev->mt76.hw->wiphy->fw_version,
334 		sizeof(dump->fw_ver));
336 	guid_copy(&dump->guid, &crash_data->guid);
337 	dump->tv_sec = crash_data->timestamp.tv_sec;
338 	dump->tv_nsec = crash_data->timestamp.tv_nsec;
339 	dump->device_id = mt76_chip(&dev->mt76);
341 	mt7915_coredump_fw_state(dev, dump, &exception);
342 	mt7915_coredump_fw_trace(dev, dump, exception);
343 	mt7915_coredump_fw_task(dev, dump);
344 	mt7915_coredump_fw_context(dev, dump);
345 	mt7915_coredump_fw_stack(dev, dump, exception);
356 	return dump;
361 	struct mt7915_coredump *dump;
363 	dump = mt7915_coredump_build(dev);
364 	if (!dump) {
365 		dev_warn(dev->mt76.dev, "no crash dump data found\n");
369 	dev_coredumpv(dev->mt76.dev, dump, dump->len, GFP_KERNEL);