-
Notifications
You must be signed in to change notification settings - Fork 6
/
occ_status.cpp
683 lines (613 loc) · 20.5 KB
/
occ_status.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
#include "occ_status.hpp"
#include "occ_manager.hpp"
#include "occ_sensor.hpp"
#include "powermode.hpp"
#include "utils.hpp"
#include <phosphor-logging/log.hpp>
#include <filesystem>
#include <format>
namespace open_power
{
namespace occ
{
using namespace phosphor::logging;
using ThrottleObj =
sdbusplus::xyz::openbmc_project::Control::Power::server::Throttle;
// Handles updates to occActive property
bool Status::occActive(bool value)
{
if (value != this->occActive())
{
log<level::INFO>(std::format("Status::occActive OCC{} changed to {}",
instance, value)
.c_str());
if (value)
{
// Clear prior throttle reason (before setting device active)
updateThrottle(false, THROTTLED_ALL);
// Set the device active
device.setActive(true);
// Update the OCC active sensor
Base::Status::occActive(value);
// Start watching for errors
addErrorWatch();
// Reset last OCC state
lastState = 0;
if (device.master())
{
// Update powercap bounds from OCC
manager.updatePcapBounds();
}
// Call into Manager to let know that we have bound
if (this->managerCallBack)
{
this->managerCallBack(instance, value);
}
}
else
{
#ifdef POWER10
if (pmode && device.master())
{
// Prevent mode changes
pmode->setMasterActive(false);
}
if (safeStateDelayTimer.isEnabled())
{
// stop safe delay timer
safeStateDelayTimer.setEnabled(false);
}
#endif
// Call into Manager to let know that we will unbind.
if (this->managerCallBack)
{
this->managerCallBack(instance, value);
}
// Stop watching for errors
removeErrorWatch();
// Set the device inactive
device.setActive(false);
// Clear throttles (OCC not active after disabling device)
updateThrottle(false, THROTTLED_ALL);
}
}
else if (value && !device.active())
{
// Existing error watch is on a dead file descriptor.
removeErrorWatch();
/*
* In it's constructor, Status checks Device::bound() to see if OCC is
* active or not.
* Device::bound() checks for occX-dev0 directory.
* We will lose occX-dev0 directories during FSI rescan.
* So, if we start this application (and construct Status), and then
* later do FSI rescan, we will end up with occActive = true and device
* NOT bound. Lets correct that situation here.
*/
device.setActive(true);
// Add error watch again
addErrorWatch();
}
else if (!value && device.active())
{
removeErrorWatch();
// In the event that the application never receives the active signal
// even though the OCC is active (this can occur if the BMC is rebooted
// with the host on, since the initial OCC driver probe will discover
// the OCCs), this application needs to be able to unbind the device
// when we get the OCC inactive signal.
device.setActive(false);
}
return Base::Status::occActive(value);
}
// Callback handler when a device error is reported.
void Status::deviceError(Error::Descriptor d)
{
#ifdef POWER10
if (pmode && device.master())
{
// Prevent mode changes
pmode->setMasterActive(false);
}
#endif
if (d.log)
{
FFDC::createOCCResetPEL(instance, d.path, d.err, d.callout);
}
// This would deem OCC inactive
this->occActive(false);
// Reset the OCC
this->resetOCC();
}
// Sends message to host control command handler to reset OCC
void Status::resetOCC()
{
log<level::INFO>(
std::format(">>Status::resetOCC() - requesting reset for OCC{}",
instance)
.c_str());
#ifdef PLDM
if (resetCallBack)
{
this->resetCallBack(instance);
}
#else
constexpr auto CONTROL_HOST_PATH = "/org/open_power/control/host0";
constexpr auto CONTROL_HOST_INTF = "org.open_power.Control.Host";
// This will throw exception on failure
auto service = utils::getService(CONTROL_HOST_PATH, CONTROL_HOST_INTF);
auto& bus = utils::getBus();
auto method = bus.new_method_call(service.c_str(), CONTROL_HOST_PATH,
CONTROL_HOST_INTF, "Execute");
// OCC Reset control command
method.append(convertForMessage(Control::Host::Command::OCCReset).c_str());
// OCC Sensor ID for callout reasons
method.append(std::variant<uint8_t>(std::get<0>(sensorMap.at(instance))));
bus.call_noreply(method);
return;
#endif
}
// Handler called by Host control command handler to convey the
// status of the executed command
void Status::hostControlEvent(sdbusplus::message_t& msg)
{
std::string cmdCompleted{};
std::string cmdStatus{};
msg.read(cmdCompleted, cmdStatus);
log<level::DEBUG>("Host control signal values",
entry("COMMAND=%s", cmdCompleted.c_str()),
entry("STATUS=%s", cmdStatus.c_str()));
if (Control::Host::convertResultFromString(cmdStatus) !=
Control::Host::Result::Success)
{
if (Control::Host::convertCommandFromString(cmdCompleted) ==
Control::Host::Command::OCCReset)
{
// Must be a Timeout. Log an Error trace
log<level::ERR>(
"Error resetting the OCC.", entry("PATH=%s", path.c_str()),
entry("SENSORID=0x%X", std::get<0>(sensorMap.at(instance))));
}
}
return;
}
// Called from Manager::pollerTimerExpired() in preperation to POLL OCC.
void Status::readOccState()
{
currentOccReadRetriesCount = occReadRetries;
occReadStateNow();
}
#ifdef POWER10
// Special processing that needs to happen once the OCCs change to ACTIVE state
void Status::occsWentActive()
{
CmdStatus status = CmdStatus::SUCCESS;
status = pmode->sendModeChange();
if (status != CmdStatus::SUCCESS)
{
log<level::ERR>(
std::format(
"Status::occsWentActive: OCC mode change failed with status {}",
status)
.c_str());
// Disable and reset to try recovering
deviceError();
}
status = pmode->sendIpsData();
if (status != CmdStatus::SUCCESS)
{
log<level::ERR>(
std::format(
"Status::occsWentActive: Sending Idle Power Save Config data failed with status {}",
status)
.c_str());
if (status == CmdStatus::COMM_FAILURE)
{
// Disable and reset to try recovering
deviceError();
}
}
}
// Send Ambient and Altitude to the OCC
CmdStatus Status::sendAmbient(const uint8_t inTemp, const uint16_t inAltitude)
{
CmdStatus status = CmdStatus::FAILURE;
bool ambientValid = true;
uint8_t ambientTemp = inTemp;
uint16_t altitude = inAltitude;
if (ambientTemp == 0xFF)
{
// Get latest readings from manager
manager.getAmbientData(ambientValid, ambientTemp, altitude);
log<level::DEBUG>(
std::format("sendAmbient: valid: {}, Ambient: {}C, altitude: {}m",
ambientValid, ambientTemp, altitude)
.c_str());
}
std::vector<std::uint8_t> cmd, rsp;
cmd.reserve(11);
cmd.push_back(uint8_t(CmdType::SEND_AMBIENT));
cmd.push_back(0x00); // Data Length (2 bytes)
cmd.push_back(0x08); //
cmd.push_back(0x00); // Version
cmd.push_back(ambientValid ? 0 : 0xFF); // Ambient Status
cmd.push_back(ambientTemp); // Ambient Temperature
cmd.push_back(altitude >> 8); // Altitude in meters (2 bytes)
cmd.push_back(altitude & 0xFF); //
cmd.push_back(0x00); // Reserved (3 bytes)
cmd.push_back(0x00);
cmd.push_back(0x00);
log<level::DEBUG>(std::format("sendAmbient: SEND_AMBIENT "
"command to OCC{} ({} bytes)",
instance, cmd.size())
.c_str());
status = occCmd.send(cmd, rsp);
if (status == CmdStatus::SUCCESS)
{
if (rsp.size() == 5)
{
if (RspStatus::SUCCESS != RspStatus(rsp[2]))
{
log<level::ERR>(
std::format(
"sendAmbient: SEND_AMBIENT failed with rspStatus 0x{:02X}",
rsp[2])
.c_str());
dump_hex(rsp);
status = CmdStatus::FAILURE;
}
}
else
{
log<level::ERR>(
std::format(
"sendAmbient: INVALID SEND_AMBIENT response length:{}",
rsp.size())
.c_str());
dump_hex(rsp);
status = CmdStatus::FAILURE;
}
}
else
{
log<level::ERR>(
std::format(
"sendAmbient: SEND_AMBIENT FAILED! with status 0x{:02X}",
status)
.c_str());
if (status == CmdStatus::COMM_FAILURE)
{
// Disable and reset to try recovering
deviceError();
}
}
return status;
}
// Called when safe timer expires to determine if OCCs need to be reset
void Status::safeStateDelayExpired()
{
if (this->occActive())
{
log<level::INFO>(
std::format(
"safeStateDelayExpired: OCC{} is in SAFE state, requesting reset",
instance)
.c_str());
// Disable and reset to try recovering
deviceError(Error::Descriptor(SAFE_ERROR_PATH));
}
}
#endif // POWER10
fs::path Status::getHwmonPath()
{
using namespace std::literals::string_literals;
if (!fs::exists(hwmonPath))
{
static bool tracedFail[8] = {0};
if (!hwmonPath.empty())
{
log<level::ERR>(
std::format("Status::getHwmonPath(): path no longer exists: {}",
hwmonPath.c_str())
.c_str());
hwmonPath.clear();
}
// Build the base HWMON path
fs::path prefixPath =
fs::path{OCC_HWMON_PATH + "occ-hwmon."s +
std::to_string(instance + 1) + "/hwmon/"s};
// Get the hwmonXX directory name
try
{
// there should only be one directory
const int numDirs = std::distance(
fs::directory_iterator(prefixPath), fs::directory_iterator{});
if (numDirs == 1)
{
hwmonPath = *fs::directory_iterator(prefixPath);
tracedFail[instance] = false;
}
else
{
if (!tracedFail[instance])
{
log<level::ERR>(
std::format(
"Status::getHwmonPath(): Found multiple ({}) hwmon paths!",
numDirs)
.c_str());
tracedFail[instance] = true;
}
}
}
catch (const fs::filesystem_error& e)
{
if (!tracedFail[instance])
{
log<level::ERR>(
std::format(
"Status::getHwmonPath(): error accessing {}: {}",
prefixPath.c_str(), e.what())
.c_str());
tracedFail[instance] = true;
}
}
}
return hwmonPath;
}
// Called to read state and upon failure to read after occReadStateFailTimer.
void Status::occReadStateNow()
{
unsigned int state;
const fs::path filename =
fs::path(DEV_PATH) /
fs::path(sysfsName + "." + std::to_string(instance + 1)) / "occ_state";
std::ifstream file;
bool goodFile = false;
// open file.
file.open(filename, std::ios::in);
const int openErrno = errno;
// File is open and state can be used.
if (file.is_open() && file.good())
{
goodFile = true;
file >> state;
if (state != lastState)
{
// Trace OCC state changes
log<level::INFO>(
std::format(
"Status::readOccState: OCC{} state 0x{:02X} (lastState: 0x{:02X})",
instance, state, lastState)
.c_str());
lastState = state;
#ifdef POWER10
if (OccState(state) == OccState::ACTIVE)
{
if (pmode && device.master())
{
// Set the master OCC on the PowerMode object
pmode->setMasterOcc(path);
// Enable mode changes
pmode->setMasterActive();
// Special processing by master OCC when it goes active
occsWentActive();
}
CmdStatus status = sendAmbient();
if (status != CmdStatus::SUCCESS)
{
log<level::ERR>(
std::format(
"readOccState: Sending Ambient failed with status {}",
status)
.c_str());
}
}
// If OCC in known Good State.
if ((OccState(state) == OccState::ACTIVE) ||
(OccState(state) == OccState::CHARACTERIZATION) ||
(OccState(state) == OccState::OBSERVATION))
{
// Good OCC State then sensors valid again
stateValid = true;
if (safeStateDelayTimer.isEnabled())
{
// stop safe delay timer (no longer in SAFE state)
safeStateDelayTimer.setEnabled(false);
}
}
// Else not Valid state We would be in SAFE mode.
// This captures both SAFE mode, and 0x00, or other invalid
// state values.
else
{
if (!safeStateDelayTimer.isEnabled())
{
// start safe delay timer (before requesting reset)
using namespace std::literals::chrono_literals;
safeStateDelayTimer.restartOnce(60s);
}
// Not valid state, update sensors to Nan & not functional.
stateValid = false;
}
#else
// Before P10 state not checked, only used good file open.
stateValid = true;
#endif
}
}
file.close();
// if failed to Read a state or not a valid state -> Attempt retry
// after 1 Second delay if allowed.
if ((!goodFile) || (!stateValid))
{
if (!goodFile)
{
// If not able to read, OCC may be offline
log<level::ERR>(
std::format("Status::readOccState: open failed (errno={})",
openErrno)
.c_str());
}
else
{
// else this failed due to state not valid.
if (state != lastState)
{
log<level::ERR>(
std::format(
"Status::readOccState: OCC{} Invalid state 0x{:02X} (last state: 0x{:02X})",
instance, state, lastState)
.c_str());
}
}
#ifdef READ_OCC_SENSORS
manager.setSensorValueToNaN(instance);
#endif
// See occReadRetries for number of retry attempts.
if (currentOccReadRetriesCount > 0)
{
--currentOccReadRetriesCount;
#ifdef POWER10
using namespace std::chrono_literals;
occReadStateFailTimer.restartOnce(1s);
#endif
}
else
{
#ifdef POWER10
if (!stateValid && occActive())
{
if (!safeStateDelayTimer.isEnabled())
{
log<level::ERR>(
"Starting 60 sec delay timer before requesting a reset");
// start safe delay timer (before requesting reset)
using namespace std::literals::chrono_literals;
safeStateDelayTimer.restartOnce(60s);
}
}
#else
// State could not be determined, set it to NO State.
lastState = 0;
// Disable the ability to send Failed actions until OCC is
// Active again.
stateValid = false;
// Disable and reset to try recovering
deviceError();
#endif
}
}
}
// Update processor throttle status on dbus
void Status::updateThrottle(const bool isThrottled, const uint8_t newReason)
{
if (!throttleHandle)
{
return;
}
uint8_t newThrottleCause = throttleCause;
if (isThrottled) // throttled due to newReason
{
if ((newReason & throttleCause) == 0)
{
// set the bit(s) for passed in reason
newThrottleCause |= newReason;
}
// else no change
}
else // no longer throttled due to newReason
{
if ((newReason & throttleCause) != 0)
{
// clear the bit(s) for passed in reason
newThrottleCause &= ~newReason;
}
// else no change
}
if (newThrottleCause != throttleCause)
{
if (newThrottleCause == THROTTLED_NONE)
{
log<level::DEBUG>(
std::format(
"updateThrottle: OCC{} no longer throttled (prior reason: {})",
instance, throttleCause)
.c_str());
throttleCause = THROTTLED_NONE;
throttleHandle->throttled(false);
throttleHandle->throttleCauses({});
}
else
{
log<level::DEBUG>(
std::format(
"updateThrottle: OCC{} is throttled with reason {} (prior reason: {})",
instance, newThrottleCause, throttleCause)
.c_str());
throttleCause = newThrottleCause;
std::vector<ThrottleObj::ThrottleReasons> updatedCauses;
if (throttleCause & THROTTLED_POWER)
{
updatedCauses.push_back(
throttleHandle->ThrottleReasons::PowerLimit);
}
if (throttleCause & THROTTLED_THERMAL)
{
updatedCauses.push_back(
throttleHandle->ThrottleReasons::ThermalLimit);
}
if (throttleCause & THROTTLED_SAFE)
{
updatedCauses.push_back(
throttleHandle->ThrottleReasons::ManagementDetectedFault);
}
throttleHandle->throttleCauses(updatedCauses);
throttleHandle->throttled(true);
}
}
// else no change to throttle status
}
// Get processor path associated with this OCC
void Status::readProcAssociation()
{
std::string managingPath = path + "/power_managing";
log<level::DEBUG>(
std::format("readProcAssociation: getting endpoints for {} ({})",
managingPath, path)
.c_str());
try
{
utils::PropertyValue procPathProperty{};
procPathProperty = utils::getProperty(
managingPath, "xyz.openbmc_project.Association", "endpoints");
auto result = std::get<std::vector<std::string>>(procPathProperty);
if (result.size() > 0)
{
procPath = result[0];
log<level::INFO>(
std::format("readProcAssociation: OCC{} has proc={}", instance,
procPath.c_str())
.c_str());
}
else
{
log<level::ERR>(
std::format(
"readProcAssociation: No processor associated with OCC{} / {}",
instance, path)
.c_str());
}
}
catch (const sdbusplus::exception_t& e)
{
log<level::ERR>(
std::format(
"readProcAssociation: Unable to get proc assocated with {} - {}",
path, e.what())
.c_str());
procPath = {};
}
}
} // namespace occ
} // namespace open_power