1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /* If you are watching for a new uevent, uncomment the following define.
18 * After flashing your test build, run:
19 * adb root && adb shell
20 * stop vendor.pixelstats_vendor
21 * touch /data/local/tmp/uevents
22 * /vendor/bin/pixelstats-vendor &
23 *
24 * then trigger any events.
25 * If you leave adb connected, you can watch them with
26 * tail -f /data/local/tmp/uevents
27 *
28 * Once you are done,
29 *
30 * adb pull /data/local/tmp/uevents
31 * adb rm /data/local/tmp/uevents
32 * adb reboot
33 *
34 * provide this log in the bug as support for your feature.
35 */
36 // #define LOG_UEVENTS_TO_FILE_ONLY_FOR_DEVEL "/data/local/tmp/uevents"
37
38 #define LOG_TAG "pixelstats-uevent"
39
40 #include <android-base/file.h>
41 #include <android-base/logging.h>
42 #include <android-base/parseint.h>
43 #include <android-base/strings.h>
44 #include <android/binder_manager.h>
45 #include <cutils/uevent.h>
46 #include <fcntl.h>
47 #include <hardware/google/pixel/pixelstats/pixelatoms.pb.h>
48 #include <log/log.h>
49 #include <pixelstats/StatsHelper.h>
50 #include <pixelstats/UeventListener.h>
51 #include <pixelstats/WlcReporter.h>
52 #include <sys/stat.h>
53 #include <sys/types.h>
54 #include <unistd.h>
55 #include <utils/StrongPointer.h>
56
57 #include <string>
58 #include <thread>
59
60 namespace android {
61 namespace hardware {
62 namespace google {
63 namespace pixel {
64
65 using aidl::android::frameworks::stats::VendorAtom;
66 using aidl::android::frameworks::stats::VendorAtomValue;
67 using android::sp;
68 using android::base::ReadFileToString;
69 using android::base::WriteStringToFile;
70 using android::hardware::google::pixel::WlcReporter;
71 using android::hardware::google::pixel::PixelAtoms::ChargeStats;
72 using android::hardware::google::pixel::PixelAtoms::PdVidPid;
73 using android::hardware::google::pixel::PixelAtoms::VendorHardwareFailed;
74 using android::hardware::google::pixel::PixelAtoms::VendorUsbPortOverheat;
75 using android::hardware::google::pixel::PixelAtoms::VoltageTierStats;
76
77 constexpr int32_t UEVENT_MSG_LEN = 2048; // it's 2048 in all other users.
78 constexpr int32_t PRODUCT_TYPE_OFFSET = 23;
79 constexpr int32_t PRODUCT_TYPE_MASK = 7;
80 constexpr int32_t PRODUCT_TYPE_CHARGER = 3;
81 constexpr int32_t VID_MASK = 0xffff;
82 constexpr int32_t VID_GOOGLE = 0x18d1;
83 constexpr int32_t PID_OFFSET = 2;
84 constexpr int32_t PID_LENGTH = 4;
85 constexpr uint32_t PID_P30 = 0x4f05;
86
ReadFileToInt(const std::string & path,int * val)87 bool UeventListener::ReadFileToInt(const std::string &path, int *val) {
88 return ReadFileToInt(path.c_str(), val);
89 }
90
ReadFileToInt(const char * const path,int * val)91 bool UeventListener::ReadFileToInt(const char *const path, int *val) {
92 std::string file_contents;
93
94 if (!ReadFileToString(path, &file_contents)) {
95 ALOGE("Unable to read %s - %s", path, strerror(errno));
96 return false;
97 } else if (sscanf(file_contents.c_str(), "%d", val) != 1) {
98 ALOGE("Unable to convert %s to int - %s", path, strerror(errno));
99 return false;
100 }
101 return true;
102 }
103
ReportMicBrokenOrDegraded(const std::shared_ptr<IStats> & stats_client,const int mic,const bool isbroken)104 void UeventListener::ReportMicBrokenOrDegraded(const std::shared_ptr<IStats> &stats_client,
105 const int mic, const bool isbroken) {
106 VendorHardwareFailed failure;
107 failure.set_hardware_type(VendorHardwareFailed::HARDWARE_FAILED_MICROPHONE);
108 failure.set_hardware_location(mic);
109 failure.set_failure_code(isbroken ? VendorHardwareFailed::COMPLETE
110 : VendorHardwareFailed::DEGRADE);
111 reportHardwareFailed(stats_client, failure);
112 }
113
ReportMicStatusUevents(const std::shared_ptr<IStats> & stats_client,const char * devpath,const char * mic_status)114 void UeventListener::ReportMicStatusUevents(const std::shared_ptr<IStats> &stats_client,
115 const char *devpath, const char *mic_status) {
116 if (!devpath || !mic_status)
117 return;
118 if (!strcmp(devpath, ("DEVPATH=" + kAudioUevent).c_str())) {
119 std::vector<std::string> value = android::base::Split(mic_status, "=");
120 bool isbroken;
121
122 if (value.size() == 2) {
123 if (!value[0].compare("MIC_BREAK_STATUS"))
124 isbroken = true;
125 else if (!value[0].compare("MIC_DEGRADE_STATUS"))
126 isbroken = false;
127 else
128 return;
129
130 if (!value[1].compare("true")) {
131 ReportMicBrokenOrDegraded(stats_client, 0, isbroken);
132 } else {
133 int mic_status = atoi(value[1].c_str());
134
135 if (mic_status > 0 && mic_status <= 7) {
136 for (int mic_bit = 0; mic_bit < 3; mic_bit++)
137 if (mic_status & (0x1 << mic_bit))
138 ReportMicBrokenOrDegraded(stats_client, mic_bit, isbroken);
139 } else if (mic_status == 0) {
140 // mic is ok
141 return;
142 } else {
143 // should not enter here
144 ALOGE("invalid mic status");
145 return;
146 }
147 }
148 }
149 }
150 }
151
ReportUsbPortOverheatEvent(const std::shared_ptr<IStats> & stats_client,const char * driver)152 void UeventListener::ReportUsbPortOverheatEvent(const std::shared_ptr<IStats> &stats_client,
153 const char *driver) {
154 if (!driver || strcmp(driver, "DRIVER=google,overheat_mitigation")) {
155 return;
156 }
157
158 int32_t plug_temperature_deci_c = 0;
159 int32_t max_temperature_deci_c = 0;
160 int32_t time_to_overheat_secs = 0;
161 int32_t time_to_hysteresis_secs = 0;
162 int32_t time_to_inactive_secs = 0;
163
164 // TODO(achant b/182941868): test return value and skip reporting in case of an error
165 ReadFileToInt((kUsbPortOverheatPath + "/plug_temp"), &plug_temperature_deci_c);
166 ReadFileToInt((kUsbPortOverheatPath + "/max_temp"), &max_temperature_deci_c);
167 ReadFileToInt((kUsbPortOverheatPath + "/trip_time"), &time_to_overheat_secs);
168 ReadFileToInt((kUsbPortOverheatPath + "/hysteresis_time"), &time_to_hysteresis_secs);
169 ReadFileToInt((kUsbPortOverheatPath + "/cleared_time"), &time_to_inactive_secs);
170
171 VendorUsbPortOverheat overheat_info;
172 overheat_info.set_plug_temperature_deci_c(plug_temperature_deci_c);
173 overheat_info.set_max_temperature_deci_c(max_temperature_deci_c);
174 overheat_info.set_time_to_overheat_secs(time_to_overheat_secs);
175 overheat_info.set_time_to_hysteresis_secs(time_to_hysteresis_secs);
176 overheat_info.set_time_to_inactive_secs(time_to_inactive_secs);
177
178 reportUsbPortOverheat(stats_client, overheat_info);
179 }
180
ReportChargeStats(const std::shared_ptr<IStats> & stats_client,const std::string line,const std::string wline_at,const std::string wline_ac,const std::string pca_line)181 void UeventListener::ReportChargeStats(const std::shared_ptr<IStats> &stats_client,
182 const std::string line, const std::string wline_at,
183 const std::string wline_ac, const std::string pca_line) {
184 int charge_stats_fields[] = {ChargeStats::kAdapterTypeFieldNumber,
185 ChargeStats::kAdapterVoltageFieldNumber,
186 ChargeStats::kAdapterAmperageFieldNumber,
187 ChargeStats::kSsocInFieldNumber,
188 ChargeStats::kVoltageInFieldNumber,
189 ChargeStats::kSsocOutFieldNumber,
190 ChargeStats::kVoltageOutFieldNumber,
191 ChargeStats::kAdapterCapabilities0FieldNumber,
192 ChargeStats::kAdapterCapabilities1FieldNumber,
193 ChargeStats::kAdapterCapabilities2FieldNumber,
194 ChargeStats::kAdapterCapabilities3FieldNumber,
195 ChargeStats::kAdapterCapabilities4FieldNumber,
196 ChargeStats::kReceiverState0FieldNumber,
197 ChargeStats::kReceiverState1FieldNumber};
198 const int32_t chg_fields_size = std::size(charge_stats_fields);
199 static_assert(chg_fields_size == 14, "Unexpected charge stats fields size");
200 const int32_t wlc_fields_size = 7;
201 std::vector<VendorAtomValue> values(chg_fields_size);
202 VendorAtomValue val;
203 int32_t i = 0, tmp[chg_fields_size] = {0}, fields_size = (chg_fields_size - wlc_fields_size);
204 int32_t pca_ac[2] = {0}, pca_rs[5] = {0};
205
206 ALOGD("ChargeStats: processing %s", line.c_str());
207 if (sscanf(line.c_str(), "%d,%d,%d, %d,%d,%d,%d", &tmp[0], &tmp[1], &tmp[2], &tmp[3], &tmp[4],
208 &tmp[5], &tmp[6]) != 7) {
209 ALOGE("Couldn't process %s", line.c_str());
210 return;
211 }
212
213 if (!wline_at.empty()) {
214 int32_t ssoc_tmp = 0;
215 ALOGD("ChargeStats(wlc): processing %s", wline_at.c_str());
216 if (sscanf(wline_at.c_str(), "A:%d", &ssoc_tmp) != 1) {
217 ALOGE("Couldn't process %s", wline_at.c_str());
218 } else {
219 tmp[0] = wireless_charge_stats_.TranslateSysModeToAtomValue(ssoc_tmp);
220 ALOGD("ChargeStats(wlc): processing %s", wline_ac.c_str());
221 if (sscanf(wline_ac.c_str(), "D:%x,%x,%x,%x,%x, %x,%x", &tmp[7], &tmp[8], &tmp[9],
222 &tmp[10], &tmp[11], &tmp[12], &tmp[13]) != 7)
223 ALOGE("Couldn't process %s", wline_ac.c_str());
224 else
225 fields_size = chg_fields_size; /* include wlc stats */
226 }
227 }
228
229 if (!pca_line.empty()) {
230 ALOGD("ChargeStats(pca): processing %s", pca_line.c_str());
231 if (sscanf(pca_line.c_str(), "D:%x,%x %x,%x,%x,%x,%x", &pca_ac[0], &pca_ac[1], &pca_rs[0],
232 &pca_rs[1], &pca_rs[2], &pca_rs[3], &pca_rs[4]) != 7) {
233 ALOGE("Couldn't process %s", pca_line.c_str());
234 } else {
235 fields_size = chg_fields_size; /* include pca stats */
236 tmp[9] = pca_rs[2];
237 tmp[10] = pca_rs[3];
238 tmp[11] = pca_rs[4];
239 tmp[13] = pca_rs[1];
240 if (wline_at.empty()) {
241 tmp[7] = pca_ac[0];
242 tmp[8] = pca_ac[1];
243 tmp[12] = pca_rs[0];
244 }
245 }
246 }
247
248 for (i = 0; i < fields_size; i++) {
249 val.set<VendorAtomValue::intValue>(tmp[i]);
250 values[charge_stats_fields[i] - kVendorAtomOffset] = val;
251 }
252
253 VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
254 .atomId = PixelAtoms::Atom::kChargeStats,
255 .values = std::move(values)};
256 const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
257 if (!ret.isOk())
258 ALOGE("Unable to report ChargeStats to Stats service");
259 }
260
ReportVoltageTierStats(const std::shared_ptr<IStats> & stats_client,const char * line,const bool has_wireless,const std::string wfile_contents)261 void UeventListener::ReportVoltageTierStats(const std::shared_ptr<IStats> &stats_client,
262 const char *line, const bool has_wireless,
263 const std::string wfile_contents) {
264 int voltage_tier_stats_fields[] = {
265 VoltageTierStats::kVoltageTierFieldNumber,
266 VoltageTierStats::kSocInFieldNumber, /* retrieved via ssoc_tmp */
267 VoltageTierStats::kCcInFieldNumber,
268 VoltageTierStats::kTempInFieldNumber,
269 VoltageTierStats::kTimeFastSecsFieldNumber,
270 VoltageTierStats::kTimeTaperSecsFieldNumber,
271 VoltageTierStats::kTimeOtherSecsFieldNumber,
272 VoltageTierStats::kTempMinFieldNumber,
273 VoltageTierStats::kTempAvgFieldNumber,
274 VoltageTierStats::kTempMaxFieldNumber,
275 VoltageTierStats::kIbattMinFieldNumber,
276 VoltageTierStats::kIbattAvgFieldNumber,
277 VoltageTierStats::kIbattMaxFieldNumber,
278 VoltageTierStats::kIclMinFieldNumber,
279 VoltageTierStats::kIclAvgFieldNumber,
280 VoltageTierStats::kIclMaxFieldNumber,
281 VoltageTierStats::kMinAdapterPowerOutFieldNumber,
282 VoltageTierStats::kTimeAvgAdapterPowerOutFieldNumber,
283 VoltageTierStats::kMaxAdapterPowerOutFieldNumber,
284 VoltageTierStats::kChargingOperatingPointFieldNumber};
285
286 const int32_t vtier_fields_size = std::size(voltage_tier_stats_fields);
287 static_assert(vtier_fields_size == 20, "Unexpected voltage tier stats fields size");
288 const int32_t wlc_fields_size = 4;
289 std::vector<VendorAtomValue> values(vtier_fields_size);
290 VendorAtomValue val;
291 float ssoc_tmp;
292 int32_t i = 0, tmp[vtier_fields_size - 1] = {0}, /* ssoc_tmp is not saved in this array */
293 fields_size = (vtier_fields_size - wlc_fields_size);
294
295 if (sscanf(line, "%d, %f,%d,%d, %d,%d,%d, %d,%d,%d, %d,%d,%d, %d,%d,%d", &tmp[0], &ssoc_tmp,
296 &tmp[1], &tmp[2], &tmp[3], &tmp[4], &tmp[5], &tmp[6], &tmp[7], &tmp[8], &tmp[9],
297 &tmp[10], &tmp[11], &tmp[12], &tmp[13], &tmp[14]) != 16) {
298 /* If format isn't as expected, then ignore line on purpose */
299 return;
300 }
301
302 if (has_wireless) {
303 wireless_charge_stats_.CalculateWirelessChargeStats(static_cast<int>(ssoc_tmp),
304 wfile_contents);
305 tmp[15] = wireless_charge_stats_.pout_min_;
306 tmp[16] = wireless_charge_stats_.pout_avg_;
307 tmp[17] = wireless_charge_stats_.pout_max_;
308 tmp[18] = wireless_charge_stats_.of_freq_;
309 fields_size = vtier_fields_size; /* include wlc stats */
310 }
311
312 ALOGD("VoltageTierStats: processed %s", line);
313 val.set<VendorAtomValue::intValue>(tmp[0]);
314 values[voltage_tier_stats_fields[0] - kVendorAtomOffset] = val;
315 val.set<VendorAtomValue::floatValue>(ssoc_tmp);
316 values[voltage_tier_stats_fields[1] - kVendorAtomOffset] = val;
317 for (i = 2; i < fields_size; i++) {
318 val.set<VendorAtomValue::intValue>(tmp[i - 1]);
319 values[voltage_tier_stats_fields[i] - kVendorAtomOffset] = val;
320 }
321
322 VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
323 .atomId = PixelAtoms::Atom::kVoltageTierStats,
324 .values = std::move(values)};
325 const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
326 if (!ret.isOk())
327 ALOGE("Unable to report VoltageTierStats to Stats service");
328 }
329
ReportChargeMetricsEvent(const std::shared_ptr<IStats> & stats_client,const char * driver)330 void UeventListener::ReportChargeMetricsEvent(const std::shared_ptr<IStats> &stats_client,
331 const char *driver) {
332 if (!driver || strcmp(driver, "DRIVER=google,battery")) {
333 return;
334 }
335
336 std::string file_contents, line, wfile_contents, wline_at, wline_ac, pca_file_contents,
337 pca_line;
338 std::istringstream ss;
339 bool has_wireless = wireless_charge_stats_.CheckWirelessContentsAndAck(&wfile_contents);
340 bool has_pca = pca_charge_stats_.CheckPcaContentsAndAck(&pca_file_contents);
341
342 if (!ReadFileToString(kChargeMetricsPath.c_str(), &file_contents)) {
343 ALOGE("Unable to read %s - %s", kChargeMetricsPath.c_str(), strerror(errno));
344 return;
345 }
346
347 ss.str(file_contents);
348
349 if (!std::getline(ss, line)) {
350 ALOGE("Unable to read first line");
351 return;
352 }
353
354 if (!WriteStringToFile(std::to_string(0), kChargeMetricsPath.c_str())) {
355 ALOGE("Couldn't clear %s - %s", kChargeMetricsPath.c_str(), strerror(errno));
356 }
357
358 if (has_pca) {
359 std::istringstream pca_ss;
360
361 pca_ss.str(pca_file_contents);
362 std::getline(pca_ss, pca_line);
363 }
364
365 if (has_wireless) {
366 std::istringstream wss;
367
368 /* there are two lines in the head, A: ...(Adapter Type) and D: ...(Adapter Capabilities) */
369 wss.str(wfile_contents);
370 std::getline(wss, wline_at);
371 std::getline(wss, wline_ac);
372
373 /* reset initial tier soc */
374 wireless_charge_stats_.tier_soc_ = 0;
375 }
376
377 ReportChargeStats(stats_client, line, wline_at, wline_ac, pca_line);
378
379 while (std::getline(ss, line)) {
380 ReportVoltageTierStats(stats_client, line.c_str(), has_wireless, wfile_contents);
381 }
382 }
383
384 /* ReportWlc
385 * Report wireless relate metrics when wireless charging start
386 */
ReportWlc(const std::shared_ptr<IStats> & stats_client,const bool pow_wireless,const bool online,const char * ptmc)387 void UeventListener::ReportWlc(const std::shared_ptr<IStats> &stats_client, const bool pow_wireless,
388 const bool online, const char *ptmc) {
389 if (!pow_wireless) {
390 return;
391 }
392
393 wlc_reporter_.checkAndReport(stats_client, online, ptmc);
394 }
395 /**
396 * Report raw battery capacity, system battery capacity and associated
397 * battery capacity curves. This data is collected to verify the filter
398 * applied on the battery capacity. This will allow debugging of issues
399 * ranging from incorrect fuel gauge hardware calculations to issues
400 * with the software reported battery capacity.
401 *
402 * The data is retrieved by parsing the battery power supply's ssoc_details.
403 *
404 * This atom logs data in 5 potential events:
405 * 1. When a device is connected
406 * 2. When a device is disconnected
407 * 3. When a device has reached a full charge (from the UI's perspective)
408 * 4. When there is a >= 2 percent skip in the UI reported SOC
409 * 5. When there is a difference of >= 4 percent between the raw hardware
410 * battery capacity and the system reported battery capacity.
411 */
ReportBatteryCapacityFGEvent(const std::shared_ptr<IStats> & stats_client,const char * subsystem)412 void UeventListener::ReportBatteryCapacityFGEvent(const std::shared_ptr<IStats> &stats_client,
413 const char *subsystem) {
414 if (!subsystem || strcmp(subsystem, "SUBSYSTEM=power_supply")) {
415 return;
416 }
417
418 // Indicates an implicit disable of the battery capacity reporting
419 if (kBatterySSOCPath.empty()) {
420 return;
421 }
422
423 battery_capacity_reporter_.checkAndReport(stats_client, kBatterySSOCPath);
424 }
425
ReportTypeCPartnerId(const std::shared_ptr<IStats> & stats_client)426 void UeventListener::ReportTypeCPartnerId(const std::shared_ptr<IStats> &stats_client) {
427 std::string file_contents_vid, file_contents_pid;
428 uint32_t pid, vid;
429
430 if (!ReadFileToString(kTypeCPartnerVidPath.c_str(), &file_contents_vid)) {
431 ALOGE("Unable to read %s - %s", kTypeCPartnerVidPath.c_str(), strerror(errno));
432 return;
433 }
434
435 if (sscanf(file_contents_vid.c_str(), "%x", &vid) != 1) {
436 ALOGE("Unable to parse vid %s from file %s to int.", file_contents_vid.c_str(),
437 kTypeCPartnerVidPath.c_str());
438 return;
439 }
440
441 if (!ReadFileToString(kTypeCPartnerPidPath.c_str(), &file_contents_pid)) {
442 ALOGE("Unable to read %s - %s", kTypeCPartnerPidPath.c_str(), strerror(errno));
443 return;
444 }
445
446 if (sscanf(file_contents_pid.substr(PID_OFFSET, PID_LENGTH).c_str(), "%x", &pid) != 1) {
447 ALOGE("Unable to parse pid %s from file %s to int.",
448 file_contents_pid.substr(PID_OFFSET, PID_LENGTH).c_str(),
449 kTypeCPartnerPidPath.c_str());
450 return;
451 }
452
453 // Upload data only for Google VID
454 if ((VID_MASK & vid) != VID_GOOGLE) {
455 return;
456 }
457
458 // Upload data only for chargers unless for P30 PID where the product type
459 // isn't set to charger.
460 if ((((vid >> PRODUCT_TYPE_OFFSET) & PRODUCT_TYPE_MASK) != PRODUCT_TYPE_CHARGER) &&
461 (pid != PID_P30)) {
462 return;
463 }
464
465 std::vector<VendorAtomValue> values(2);
466 VendorAtomValue tmp;
467
468 tmp.set<VendorAtomValue::intValue>(vid & VID_MASK);
469 values[PdVidPid::kVidFieldNumber - kVendorAtomOffset] = tmp;
470 tmp.set<VendorAtomValue::intValue>(pid);
471 values[PdVidPid::kPidFieldNumber - kVendorAtomOffset] = tmp;
472
473 // Send vendor atom to IStats HAL
474 VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
475 .atomId = PixelAtoms::Atom::kPdVidPid,
476 .values = std::move(values)};
477 const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
478 if (!ret.isOk()) {
479 ALOGE("Unable to report PD VID/PID to Stats service");
480 }
481 }
482
ProcessUevent()483 bool UeventListener::ProcessUevent() {
484 char msg[UEVENT_MSG_LEN + 2];
485 char *cp;
486 const char *driver, *product, *subsystem;
487 const char *mic_break_status, *mic_degrade_status;
488 const char *devpath;
489 bool collect_partner_id = false;
490 bool pow_online;
491 bool pow_wireless;
492 const char *pow_ptmc;
493 int n;
494
495 if (uevent_fd_ < 0) {
496 uevent_fd_ = uevent_open_socket(64 * 1024, true);
497 if (uevent_fd_ < 0) {
498 ALOGE("uevent_init: uevent_open_socket failed\n");
499 return false;
500 }
501 }
502
503 #ifdef LOG_UEVENTS_TO_FILE_ONLY_FOR_DEVEL
504 if (log_fd_ < 0) {
505 /* Intentionally no O_CREAT so no logging will happen
506 * unless the user intentionally 'touch's the file.
507 */
508 log_fd_ = open(LOG_UEVENTS_TO_FILE_ONLY_FOR_DEVEL, O_WRONLY);
509 }
510 #endif
511
512 n = uevent_kernel_multicast_recv(uevent_fd_, msg, UEVENT_MSG_LEN);
513 if (n <= 0 || n >= UEVENT_MSG_LEN)
514 return false;
515
516 // Ensure double-null termination of msg.
517 msg[n] = '\0';
518 msg[n + 1] = '\0';
519
520 driver = product = subsystem = NULL;
521 mic_break_status = mic_degrade_status = devpath = pow_ptmc = NULL;
522 pow_online = pow_wireless = false;
523
524 /**
525 * msg is a sequence of null-terminated strings.
526 * Iterate through and record positions of string/value pairs of interest.
527 * Double null indicates end of the message. (enforced above).
528 */
529 cp = msg;
530 while (*cp) {
531 if (log_fd_ > 0) {
532 write(log_fd_, cp, strlen(cp));
533 write(log_fd_, "\n", 1);
534 }
535 if (!strncmp(cp, "DRIVER=", strlen("DRIVER="))) {
536 driver = cp;
537 } else if (!strncmp(cp, "PRODUCT=", strlen("PRODUCT="))) {
538 product = cp;
539 } else if (!strncmp(cp, "MIC_BREAK_STATUS=", strlen("MIC_BREAK_STATUS="))) {
540 mic_break_status = cp;
541 } else if (!strncmp(cp, "MIC_DEGRADE_STATUS=", strlen("MIC_DEGRADE_STATUS="))) {
542 mic_degrade_status = cp;
543 } else if (!strncmp(cp, "DEVPATH=", strlen("DEVPATH="))) {
544 devpath = cp;
545 } else if (!strncmp(cp, "SUBSYSTEM=", strlen("SUBSYSTEM="))) {
546 subsystem = cp;
547 } else if (!strncmp(cp, kTypeCPartnerUevent.c_str(), kTypeCPartnerUevent.size())) {
548 collect_partner_id = true;
549 } else if (!strncmp(cp, "POWER_SUPPLY_NAME=wireless",
550 strlen("POWER_SUPPLY_NAME=wireless"))) {
551 pow_wireless = true;
552 } else if (!strncmp(cp, "POWER_SUPPLY_ONLINE=1", strlen("POWER_SUPPLY_ONLINE=1"))) {
553 pow_online = true;
554 } else if (!kWirelessChargerPtmcUevent.empty() &&
555 !strncmp(cp, kWirelessChargerPtmcUevent.c_str(),
556 strlen(kWirelessChargerPtmcUevent.c_str()))) {
557 pow_ptmc = cp + strlen(kWirelessChargerPtmcUevent.c_str());
558 }
559 /* advance to after the next \0 */
560 while (*cp++) {
561 }
562 }
563
564 std::shared_ptr<IStats> stats_client = getStatsService();
565 if (!stats_client) {
566 ALOGE("Unable to get Stats service instance.");
567 } else {
568 /* Process the strings recorded. */
569 ReportMicStatusUevents(stats_client, devpath, mic_break_status);
570 ReportMicStatusUevents(stats_client, devpath, mic_degrade_status);
571 ReportUsbPortOverheatEvent(stats_client, driver);
572 ReportChargeMetricsEvent(stats_client, driver);
573 ReportWlc(stats_client, pow_wireless, pow_online, pow_ptmc);
574 ReportBatteryCapacityFGEvent(stats_client, subsystem);
575 if (collect_partner_id) {
576 ReportTypeCPartnerId(stats_client);
577 }
578 }
579
580 if (log_fd_ > 0) {
581 write(log_fd_, "\n", 1);
582 }
583 return true;
584 }
585
UeventListener(const std::string audio_uevent,const std::string ssoc_details_path,const std::string overheat_path,const std::string charge_metrics_path,const std::string typec_partner_vid_path,const std::string typec_partner_pid_path)586 UeventListener::UeventListener(const std::string audio_uevent, const std::string ssoc_details_path,
587 const std::string overheat_path,
588 const std::string charge_metrics_path,
589 const std::string typec_partner_vid_path,
590 const std::string typec_partner_pid_path)
591 : kAudioUevent(audio_uevent),
592 kBatterySSOCPath(ssoc_details_path),
593 kUsbPortOverheatPath(overheat_path),
594 kChargeMetricsPath(charge_metrics_path),
595 kTypeCPartnerUevent(typec_partner_uevent_default),
596 kTypeCPartnerVidPath(typec_partner_vid_path),
597 kTypeCPartnerPidPath(typec_partner_pid_path),
598 kWirelessChargerPtmcUevent(""),
599 kWirelessChargerPtmcPath(""),
600 uevent_fd_(-1),
601 log_fd_(-1) {}
602
UeventListener(const struct UeventPaths & uevents_paths)603 UeventListener::UeventListener(const struct UeventPaths &uevents_paths)
604 : kAudioUevent((uevents_paths.AudioUevent == nullptr) ? "" : uevents_paths.AudioUevent),
605 kBatterySSOCPath((uevents_paths.SsocDetailsPath == nullptr) ? ssoc_details_path
606 : uevents_paths.SsocDetailsPath),
607 kUsbPortOverheatPath((uevents_paths.OverheatPath == nullptr) ? overheat_path_default
608 : uevents_paths.OverheatPath),
609 kChargeMetricsPath((uevents_paths.ChargeMetricsPath == nullptr)
610 ? charge_metrics_path_default
611 : uevents_paths.ChargeMetricsPath),
612 kTypeCPartnerUevent((uevents_paths.TypeCPartnerUevent == nullptr)
613 ? typec_partner_uevent_default
614 : uevents_paths.TypeCPartnerUevent),
615 kTypeCPartnerVidPath((uevents_paths.TypeCPartnerVidPath == nullptr)
616 ? typec_partner_vid_path_default
617 : uevents_paths.TypeCPartnerVidPath),
618 kTypeCPartnerPidPath((uevents_paths.TypeCPartnerPidPath == nullptr)
619 ? typec_partner_pid_path_default
620 : uevents_paths.TypeCPartnerPidPath),
621 kWirelessChargerPtmcUevent((uevents_paths.WirelessChargerPtmcUevent == nullptr)
622 ? ""
623 : uevents_paths.WirelessChargerPtmcUevent),
624 kWirelessChargerPtmcPath((uevents_paths.WirelessChargerPtmcPath == nullptr)
625 ? ""
626 : uevents_paths.WirelessChargerPtmcPath),
627 uevent_fd_(-1),
628 log_fd_(-1) {}
629
630 /* Thread function to continuously monitor uevents.
631 * Exit after kMaxConsecutiveErrors to prevent spinning. */
ListenForever()632 void UeventListener::ListenForever() {
633 constexpr int kMaxConsecutiveErrors = 10;
634 int consecutive_errors = 0;
635
636 while (1) {
637 if (ProcessUevent()) {
638 consecutive_errors = 0;
639 } else {
640 if (++consecutive_errors >= kMaxConsecutiveErrors) {
641 ALOGE("Too many ProcessUevent errors; exiting UeventListener.");
642 return;
643 }
644 }
645 }
646 }
647
648 } // namespace pixel
649 } // namespace google
650 } // namespace hardware
651 } // namespace android
652