+ clock_interval_to_deadline(10, kSecondScale, &deadline);
+#if !CONFIG_EMBEDDED
+ vm_pageout_wait(AbsoluteTime_to_scalar(&deadline));
+#endif /* !CONFIG_EMBEDDED */
+ }
+
+#if HIBERNATION
+ IOHibernateSystemSleep();
+ IOHibernateIOKitSleep();
+#endif
+ if (gRootDomain->activitySinceSleep()) {
+ dict = OSDictionary::withCapacity(1);
+ secs = OSNumber::withNumber(1, 32);
+
+ if (dict && secs) {
+ dict->setObject(gIOPMSettingDebugWakeRelativeKey, secs);
+ gRootDomain->setProperties(dict);
+ MSG("Reverting sleep with relative wake\n");
+ }
+ if (dict) dict->release();
+ if (secs) secs->release();
+ }
+
+ }
+}
+
+//******************************************************************************
+// sleepOnClamshellClosed
+//
+// contains the logic to determine if the system should sleep when the clamshell
+// is closed.
+//******************************************************************************
+
+bool IOPMrootDomain::shouldSleepOnClamshellClosed( void )
+{
+ if (!clamshellExists)
+ return false;
+
+ DLOG("clamshell closed %d, disabled %d, desktopMode %d, ac %d sleepDisabled %d\n",
+ clamshellClosed, clamshellDisabled, desktopMode, acAdaptorConnected, clamshellSleepDisabled);
+
+ return ( !clamshellDisabled && !(desktopMode && acAdaptorConnected) && !clamshellSleepDisabled );
+}
+
+void IOPMrootDomain::sendClientClamshellNotification( void )
+{
+ /* Only broadcast clamshell alert if clamshell exists. */
+ if (!clamshellExists)
+ return;
+
+ setProperty(kAppleClamshellStateKey,
+ clamshellClosed ? kOSBooleanTrue : kOSBooleanFalse);
+
+ setProperty(kAppleClamshellCausesSleepKey,
+ shouldSleepOnClamshellClosed() ? kOSBooleanTrue : kOSBooleanFalse);
+
+ /* Argument to message is a bitfiel of
+ * ( kClamshellStateBit | kClamshellSleepBit )
+ */
+ messageClients(kIOPMMessageClamshellStateChange,
+ (void *)(uintptr_t) ( (clamshellClosed ? kClamshellStateBit : 0)
+ | ( shouldSleepOnClamshellClosed() ? kClamshellSleepBit : 0)) );
+}
+
+//******************************************************************************
+// getSleepSupported
+//
+// Deprecated
+//******************************************************************************
+
+IOOptionBits IOPMrootDomain::getSleepSupported( void )
+{
+ return( platformSleepSupport );
+}
+
+//******************************************************************************
+// setSleepSupported
+//
+// Deprecated
+//******************************************************************************
+
+void IOPMrootDomain::setSleepSupported( IOOptionBits flags )
+{
+ DLOG("setSleepSupported(%x)\n", (uint32_t) flags);
+ OSBitOrAtomic(flags, &platformSleepSupport);
+}
+
+//******************************************************************************
+// setDisableClamShellSleep
+//
+//******************************************************************************
+
+void IOPMrootDomain::setDisableClamShellSleep( bool val )
+{
+ if (gIOPMWorkLoop->inGate() == false) {
+
+ gIOPMWorkLoop->runAction(
+ OSMemberFunctionCast(IOWorkLoop::Action, this, &IOPMrootDomain::setDisableClamShellSleep),
+ (OSObject *)this,
+ (void *)val);
+
+ return;
+ }
+ else {
+ DLOG("setDisableClamShellSleep(%x)\n", (uint32_t) val);
+ if ( clamshellSleepDisabled != val )
+ {
+ clamshellSleepDisabled = val;
+ // If clamshellSleepDisabled is reset to 0, reevaluate if
+ // system need to go to sleep due to clamshell state
+ if ( !clamshellSleepDisabled && clamshellClosed)
+ handlePowerNotification(kLocalEvalClamshellCommand);
+ }
+ }
+}
+
+//******************************************************************************
+// wakeFromDoze
+//
+// Deprecated.
+//******************************************************************************
+
+void IOPMrootDomain::wakeFromDoze( void )
+{
+ // Preserve symbol for familes (IOUSBFamily and IOGraphics)
+}
+
+// MARK: -
+// MARK: Features
+
+//******************************************************************************
+// publishFeature
+//
+// Adds a new feature to the supported features dictionary
+//******************************************************************************
+
+void IOPMrootDomain::publishFeature( const char * feature )
+{
+ publishFeature(feature, kRD_AllPowerSources, NULL);
+}
+
+//******************************************************************************
+// publishFeature (with supported power source specified)
+//
+// Adds a new feature to the supported features dictionary
+//******************************************************************************
+
+void IOPMrootDomain::publishFeature(
+ const char *feature,
+ uint32_t supportedWhere,
+ uint32_t *uniqueFeatureID)
+{
+ static uint16_t next_feature_id = 500;
+
+ OSNumber *new_feature_data = NULL;
+ OSNumber *existing_feature = NULL;
+ OSArray *existing_feature_arr = NULL;
+ OSObject *osObj = NULL;
+ uint32_t feature_value = 0;
+
+ supportedWhere &= kRD_AllPowerSources; // mask off any craziness!
+
+ if(!supportedWhere) {
+ // Feature isn't supported anywhere!
+ return;
+ }
+
+ if(next_feature_id > 5000) {
+ // Far, far too many features!
+ return;
+ }
+
+ if(featuresDictLock) IOLockLock(featuresDictLock);
+
+ OSDictionary *features =
+ (OSDictionary *) getProperty(kRootDomainSupportedFeatures);
+
+ // Create new features dict if necessary
+ if ( features && OSDynamicCast(OSDictionary, features)) {
+ features = OSDictionary::withDictionary(features);
+ } else {
+ features = OSDictionary::withCapacity(1);
+ }
+
+ // Create OSNumber to track new feature
+
+ next_feature_id += 1;
+ if( uniqueFeatureID ) {
+ // We don't really mind if the calling kext didn't give us a place
+ // to stash their unique id. Many kexts don't plan to unload, and thus
+ // have no need to remove themselves later.
+ *uniqueFeatureID = next_feature_id;
+ }
+
+ feature_value = (uint32_t)next_feature_id;
+ feature_value <<= 16;
+ feature_value += supportedWhere;
+
+ new_feature_data = OSNumber::withNumber(
+ (unsigned long long)feature_value, 32);
+
+ // Does features object already exist?
+ if( (osObj = features->getObject(feature)) )
+ {
+ if(( existing_feature = OSDynamicCast(OSNumber, osObj) ))
+ {
+ // We need to create an OSArray to hold the now 2 elements.
+ existing_feature_arr = OSArray::withObjects(
+ (const OSObject **)&existing_feature, 1, 2);
+ } else if(( existing_feature_arr = OSDynamicCast(OSArray, osObj) ))
+ {
+ // Add object to existing array
+ existing_feature_arr = OSArray::withArray(
+ existing_feature_arr,
+ existing_feature_arr->getCount() + 1);
+ }
+
+ if (existing_feature_arr)
+ {
+ existing_feature_arr->setObject(new_feature_data);
+ features->setObject(feature, existing_feature_arr);
+ existing_feature_arr->release();
+ existing_feature_arr = 0;
+ }
+ } else {
+ // The easy case: no previously existing features listed. We simply
+ // set the OSNumber at key 'feature' and we're on our way.
+ features->setObject(feature, new_feature_data);
+ }
+
+ new_feature_data->release();
+
+ setProperty(kRootDomainSupportedFeatures, features);
+
+ features->release();
+
+ if(featuresDictLock) IOLockUnlock(featuresDictLock);
+
+ // Notify EnergySaver and all those in user space so they might
+ // re-populate their feature specific UI
+ if(pmPowerStateQueue) {
+ pmPowerStateQueue->submitPowerEvent( kPowerEventFeatureChanged );
+ }
+}
+
+//******************************************************************************
+// removePublishedFeature
+//
+// Removes previously published feature
+//******************************************************************************
+
+IOReturn IOPMrootDomain::removePublishedFeature( uint32_t removeFeatureID )
+{
+ IOReturn ret = kIOReturnError;
+ uint32_t feature_value = 0;
+ uint16_t feature_id = 0;
+ bool madeAChange = false;
+
+ OSSymbol *dictKey = NULL;
+ OSCollectionIterator *dictIterator = NULL;
+ OSArray *arrayMember = NULL;
+ OSNumber *numberMember = NULL;
+ OSObject *osObj = NULL;
+ OSNumber *osNum = NULL;
+ OSArray *arrayMemberCopy;
+
+ if (kBadPMFeatureID == removeFeatureID)
+ return kIOReturnNotFound;
+
+ if(featuresDictLock) IOLockLock(featuresDictLock);
+
+ OSDictionary *features =
+ (OSDictionary *) getProperty(kRootDomainSupportedFeatures);
+
+ if ( features && OSDynamicCast(OSDictionary, features) )
+ {
+ // Any modifications to the dictionary are made to the copy to prevent
+ // races & crashes with userland clients. Dictionary updated
+ // automically later.
+ features = OSDictionary::withDictionary(features);
+ } else {
+ features = NULL;
+ ret = kIOReturnNotFound;
+ goto exit;
+ }
+
+ // We iterate 'features' dictionary looking for an entry tagged
+ // with 'removeFeatureID'. If found, we remove it from our tracking
+ // structures and notify the OS via a general interest message.
+
+ dictIterator = OSCollectionIterator::withCollection(features);
+ if(!dictIterator) {
+ goto exit;
+ }
+
+ while( (dictKey = OSDynamicCast(OSSymbol, dictIterator->getNextObject())) )
+ {
+ osObj = features->getObject(dictKey);
+
+ // Each Feature is either tracked by an OSNumber
+ if( osObj && (numberMember = OSDynamicCast(OSNumber, osObj)) )
+ {
+ feature_value = numberMember->unsigned32BitValue();
+ feature_id = (uint16_t)(feature_value >> 16);
+
+ if( feature_id == (uint16_t)removeFeatureID )
+ {
+ // Remove this node
+ features->removeObject(dictKey);
+ madeAChange = true;
+ break;
+ }
+
+ // Or tracked by an OSArray of OSNumbers
+ } else if( osObj && (arrayMember = OSDynamicCast(OSArray, osObj)) )
+ {
+ unsigned int arrayCount = arrayMember->getCount();
+
+ for(unsigned int i=0; i<arrayCount; i++)
+ {
+ osNum = OSDynamicCast(OSNumber, arrayMember->getObject(i));
+ if(!osNum) {
+ continue;
+ }
+
+ feature_value = osNum->unsigned32BitValue();
+ feature_id = (uint16_t)(feature_value >> 16);
+
+ if( feature_id == (uint16_t)removeFeatureID )
+ {
+ // Remove this node
+ if( 1 == arrayCount ) {
+ // If the array only contains one element, remove
+ // the whole thing.
+ features->removeObject(dictKey);
+ } else {
+ // Otherwise remove the element from a copy of the array.
+ arrayMemberCopy = OSArray::withArray(arrayMember);
+ if (arrayMemberCopy)
+ {
+ arrayMemberCopy->removeObject(i);
+ features->setObject(dictKey, arrayMemberCopy);
+ arrayMemberCopy->release();
+ }
+ }
+
+ madeAChange = true;
+ break;
+ }
+ }
+ }
+ }
+
+ dictIterator->release();
+
+ if( madeAChange )
+ {
+ ret = kIOReturnSuccess;
+
+ setProperty(kRootDomainSupportedFeatures, features);
+
+ // Notify EnergySaver and all those in user space so they might
+ // re-populate their feature specific UI
+ if(pmPowerStateQueue) {
+ pmPowerStateQueue->submitPowerEvent( kPowerEventFeatureChanged );
+ }
+ } else {
+ ret = kIOReturnNotFound;
+ }
+
+exit:
+ if(features) features->release();
+ if(featuresDictLock) IOLockUnlock(featuresDictLock);
+ return ret;
+}
+
+//******************************************************************************
+// publishPMSetting (private)
+//
+// Should only be called by PMSettingObject to publish a PM Setting as a
+// supported feature.
+//******************************************************************************
+
+void IOPMrootDomain::publishPMSetting(
+ const OSSymbol * feature, uint32_t where, uint32_t * featureID )
+{
+ if (noPublishPMSettings &&
+ (noPublishPMSettings->getNextIndexOfObject(feature, 0) != (unsigned int)-1))
+ {
+ // Setting found in noPublishPMSettings array
+ *featureID = kBadPMFeatureID;
+ return;
+ }
+
+ publishFeature(
+ feature->getCStringNoCopy(), where, featureID);
+}
+
+//******************************************************************************
+// setPMSetting (private)
+//
+// Internal helper to relay PM settings changes from user space to individual
+// drivers. Should be called only by IOPMrootDomain::setProperties.
+//******************************************************************************
+
+IOReturn IOPMrootDomain::setPMSetting(
+ const OSSymbol *type,
+ OSObject *object )
+{
+ PMSettingCallEntry *entries = 0;
+ OSArray *chosen = 0;
+ const OSArray *array;
+ PMSettingObject *pmso;
+ thread_t thisThread;
+ int i, j, count, capacity;
+
+ if (NULL == type)
+ return kIOReturnBadArgument;
+
+ PMSETTING_LOCK();
+
+ // Update settings dict so changes are visible from copyPMSetting().
+ fPMSettingsDict->setObject(type, object);
+
+ // Prep all PMSetting objects with the given 'type' for callout.
+ array = OSDynamicCast(OSArray, settingsCallbacks->getObject(type));
+ if (!array || ((capacity = array->getCount()) == 0))
+ goto unlock_exit;
+
+ // Array to retain PMSetting objects targeted for callout.
+ chosen = OSArray::withCapacity(capacity);
+ if (!chosen)
+ goto unlock_exit; // error
+
+ entries = IONew(PMSettingCallEntry, capacity);
+ if (!entries)
+ goto unlock_exit; // error
+ memset(entries, 0, sizeof(PMSettingCallEntry) * capacity);
+
+ thisThread = current_thread();
+
+ for (i = 0, j = 0; i<capacity; i++)
+ {
+ pmso = (PMSettingObject *) array->getObject(i);
+ if (pmso->disabled)
+ continue;
+ entries[j].thread = thisThread;
+ queue_enter(&pmso->calloutQueue, &entries[j], PMSettingCallEntry *, link);
+ chosen->setObject(pmso);
+ j++;
+ }
+ count = j;
+ if (!count)
+ goto unlock_exit;
+
+ PMSETTING_UNLOCK();
+
+ // Call each pmso in the chosen array.
+ for (i=0; i<count; i++)
+ {
+ pmso = (PMSettingObject *) chosen->getObject(i);
+ pmso->dispatchPMSetting(type, object);
+ }
+
+ PMSETTING_LOCK();
+ for (i=0; i<count; i++)
+ {
+ pmso = (PMSettingObject *) chosen->getObject(i);
+ queue_remove(&pmso->calloutQueue, &entries[i], PMSettingCallEntry *, link);
+ if (pmso->waitThread)
+ {
+ PMSETTING_WAKEUP(pmso);
+ }
+ }
+unlock_exit:
+ PMSETTING_UNLOCK();
+
+ if (chosen) chosen->release();
+ if (entries) IODelete(entries, PMSettingCallEntry, capacity);
+
+ return kIOReturnSuccess;
+}
+
+//******************************************************************************
+// copyPMSetting (public)
+//
+// Allows kexts to safely read setting values, without being subscribed to
+// notifications.
+//******************************************************************************
+
+OSObject * IOPMrootDomain::copyPMSetting(
+ OSSymbol *whichSetting)
+{
+ OSObject *obj = NULL;
+
+ if(!whichSetting) return NULL;
+
+ PMSETTING_LOCK();
+ obj = fPMSettingsDict->getObject(whichSetting);
+ if(obj) {
+ obj->retain();
+ }
+ PMSETTING_UNLOCK();
+
+ return obj;
+}
+
+//******************************************************************************
+// registerPMSettingController (public)
+//
+// direct wrapper to registerPMSettingController with uint32_t power source arg
+//******************************************************************************
+
+IOReturn IOPMrootDomain::registerPMSettingController(
+ const OSSymbol * settings[],
+ IOPMSettingControllerCallback func,
+ OSObject *target,
+ uintptr_t refcon,
+ OSObject **handle)
+{
+ return registerPMSettingController(
+ settings,
+ (kIOPMSupportedOnAC | kIOPMSupportedOnBatt | kIOPMSupportedOnUPS),
+ func, target, refcon, handle);
+}
+
+//******************************************************************************
+// registerPMSettingController (public)
+//
+// Kexts may register for notifications when a particular setting is changed.
+// A list of settings is available in IOPM.h.
+// Arguments:
+// * settings - An OSArray containing OSSymbols. Caller should populate this
+// array with a list of settings caller wants notifications from.
+// * func - A C function callback of the type IOPMSettingControllerCallback
+// * target - caller may provide an OSObject *, which PM will pass as an
+// target to calls to "func"
+// * refcon - caller may provide an void *, which PM will pass as an
+// argument to calls to "func"
+// * handle - This is a return argument. We will populate this pointer upon
+// call success. Hold onto this and pass this argument to
+// IOPMrootDomain::deRegisterPMSettingCallback when unloading your kext
+// Returns:
+// kIOReturnSuccess on success
+//******************************************************************************
+
+IOReturn IOPMrootDomain::registerPMSettingController(
+ const OSSymbol * settings[],
+ uint32_t supportedPowerSources,
+ IOPMSettingControllerCallback func,
+ OSObject *target,
+ uintptr_t refcon,
+ OSObject **handle)
+{
+ PMSettingObject *pmso = NULL;
+ OSObject *pmsh = NULL;
+ OSArray *list = NULL;
+ int i;
+
+ if (NULL == settings ||
+ NULL == func ||
+ NULL == handle)
+ {
+ return kIOReturnBadArgument;
+ }
+
+ pmso = PMSettingObject::pmSettingObject(
+ (IOPMrootDomain *) this, func, target,
+ refcon, supportedPowerSources, settings, &pmsh);
+
+ if (!pmso) {
+ *handle = NULL;
+ return kIOReturnInternalError;
+ }
+
+ PMSETTING_LOCK();
+ for (i=0; settings[i]; i++)
+ {
+ list = OSDynamicCast(OSArray, settingsCallbacks->getObject(settings[i]));
+ if (!list) {
+ // New array of callbacks for this setting
+ list = OSArray::withCapacity(1);
+ settingsCallbacks->setObject(settings[i], list);
+ list->release();
+ }
+
+ // Add caller to the callback list
+ list->setObject(pmso);
+ }
+ PMSETTING_UNLOCK();
+
+ // Return handle to the caller, the setting object is private.
+ *handle = pmsh;
+
+ return kIOReturnSuccess;
+}
+
+//******************************************************************************
+// deregisterPMSettingObject (private)
+//
+// Only called from PMSettingObject.
+//******************************************************************************
+
+void IOPMrootDomain::deregisterPMSettingObject( PMSettingObject * pmso )
+{
+ thread_t thisThread = current_thread();
+ PMSettingCallEntry *callEntry;
+ OSCollectionIterator *iter;
+ OSSymbol *sym;
+ OSArray *array;
+ int index;
+ bool wait;
+
+ PMSETTING_LOCK();
+
+ pmso->disabled = true;
+
+ // Wait for all callout threads to finish.
+ do {
+ wait = false;
+ queue_iterate(&pmso->calloutQueue, callEntry, PMSettingCallEntry *, link)
+ {
+ if (callEntry->thread != thisThread)
+ {
+ wait = true;
+ break;
+ }
+ }
+ if (wait)
+ {
+ assert(0 == pmso->waitThread);
+ pmso->waitThread = thisThread;
+ PMSETTING_WAIT(pmso);
+ pmso->waitThread = 0;
+ }
+ } while (wait);
+
+ // Search each PM settings array in the kernel.
+ iter = OSCollectionIterator::withCollection(settingsCallbacks);
+ if (iter)
+ {
+ while ((sym = OSDynamicCast(OSSymbol, iter->getNextObject())))
+ {
+ array = OSDynamicCast(OSArray, settingsCallbacks->getObject(sym));
+ index = array->getNextIndexOfObject(pmso, 0);
+ if (-1 != index) {
+ array->removeObject(index);
+ }
+ }
+ iter->release();
+ }
+
+ PMSETTING_UNLOCK();
+
+ pmso->release();
+}
+
+//******************************************************************************
+// informCPUStateChange
+//
+// Call into PM CPU code so that CPU power savings may dynamically adjust for
+// running on battery, with the lid closed, etc.
+//
+// informCPUStateChange is a no-op on non x86 systems
+// only x86 has explicit support in the IntelCPUPowerManagement kext
+//******************************************************************************
+
+void IOPMrootDomain::informCPUStateChange(
+ uint32_t type,
+ uint32_t value )
+{
+#if defined(__i386__) || defined(__x86_64__)
+
+ pmioctlVariableInfo_t varInfoStruct;
+ int pmCPUret = 0;
+ const char *varNameStr = NULL;
+ int32_t *varIndex = NULL;
+
+ if (kInformAC == type) {
+ varNameStr = kIOPMRootDomainBatPowerCString;
+ varIndex = &idxPMCPULimitedPower;
+ } else if (kInformLid == type) {
+ varNameStr = kIOPMRootDomainLidCloseCString;
+ varIndex = &idxPMCPUClamshell;
+ } else {
+ return;
+ }
+
+ // Set the new value!
+ // pmCPUControl will assign us a new ID if one doesn't exist yet
+ bzero(&varInfoStruct, sizeof(pmioctlVariableInfo_t));
+ varInfoStruct.varID = *varIndex;
+ varInfoStruct.varType = vBool;
+ varInfoStruct.varInitValue = value;
+ varInfoStruct.varCurValue = value;
+ strlcpy( (char *)varInfoStruct.varName,
+ (const char *)varNameStr,
+ sizeof(varInfoStruct.varName));
+
+ // Set!
+ pmCPUret = pmCPUControl( PMIOCSETVARINFO, (void *)&varInfoStruct );
+
+ // pmCPU only assigns numerical id's when a new varName is specified
+ if ((0 == pmCPUret)
+ && (*varIndex == kCPUUnknownIndex))
+ {
+ // pmCPUControl has assigned us a new variable ID.
+ // Let's re-read the structure we just SET to learn that ID.
+ pmCPUret = pmCPUControl( PMIOCGETVARNAMEINFO, (void *)&varInfoStruct );
+
+ if (0 == pmCPUret)
+ {
+ // Store it in idxPMCPUClamshell or idxPMCPULimitedPower
+ *varIndex = varInfoStruct.varID;
+ }
+ }
+
+ return;
+
+#endif /* __i386__ || __x86_64__ */
+}
+
+// MARK: -
+// MARK: Deep Sleep Policy
+
+#if HIBERNATION
+
+//******************************************************************************
+// evaluateSystemSleepPolicy
+//******************************************************************************
+
+#define kIOPlatformSystemSleepPolicyKey "IOPlatformSystemSleepPolicy"
+
+// Sleep flags
+enum {
+ kIOPMSleepFlagHibernate = 0x00000001,
+ kIOPMSleepFlagSleepTimerEnable = 0x00000002
+};
+
+struct IOPMSystemSleepPolicyEntry
+{
+ uint32_t factorMask;
+ uint32_t factorBits;
+ uint32_t sleepFlags;
+ uint32_t wakeEvents;
+} __attribute__((packed));
+
+struct IOPMSystemSleepPolicyTable
+{
+ uint32_t signature;
+ uint16_t version;
+ uint16_t entryCount;
+ IOPMSystemSleepPolicyEntry entries[];
+} __attribute__((packed));
+
+enum {
+ kIOPMSleepAttributeHibernateSetup = 0x00000001,
+ kIOPMSleepAttributeHibernateSleep = 0x00000002
+};
+
+static uint32_t
+getSleepTypeAttributes( uint32_t sleepType )
+{
+ static const uint32_t sleepTypeAttributes[ kIOPMSleepTypeLast ] =
+ {
+ /* invalid */ 0,
+ /* abort */ 0,
+ /* normal */ 0,
+ /* safesleep */ kIOPMSleepAttributeHibernateSetup,
+ /* hibernate */ kIOPMSleepAttributeHibernateSetup | kIOPMSleepAttributeHibernateSleep,
+ /* standby */ kIOPMSleepAttributeHibernateSetup | kIOPMSleepAttributeHibernateSleep,
+ /* poweroff */ kIOPMSleepAttributeHibernateSetup | kIOPMSleepAttributeHibernateSleep,
+ /* deepidle */ 0
+ };
+
+ if (sleepType >= kIOPMSleepTypeLast)
+ return 0;
+
+ return sleepTypeAttributes[sleepType];
+}
+
+bool IOPMrootDomain::evaluateSystemSleepPolicy(
+ IOPMSystemSleepParameters * params, int sleepPhase, uint32_t * hibMode )
+{
+ const IOPMSystemSleepPolicyTable * pt;
+ OSObject * prop = 0;
+ OSData * policyData;
+ uint64_t currentFactors = 0;
+ uint32_t standbyDelay = 0;
+ uint32_t powerOffDelay = 0;
+ uint32_t powerOffTimer = 0;
+ uint32_t standbyTimer = 0;
+ uint32_t mismatch;
+ bool standbyEnabled;
+ bool powerOffEnabled;
+ bool found = false;
+
+ // Get platform's sleep policy table
+ if (!gSleepPolicyHandler)
+ {
+ prop = getServiceRoot()->copyProperty(kIOPlatformSystemSleepPolicyKey);
+ if (!prop) goto done;
+ }
+
+ // Fetch additional settings
+ standbyEnabled = (getSleepOption(kIOPMDeepSleepDelayKey, &standbyDelay)
+ && (getProperty(kIOPMDeepSleepEnabledKey) == kOSBooleanTrue));
+ powerOffEnabled = (getSleepOption(kIOPMAutoPowerOffDelayKey, &powerOffDelay)
+ && (getProperty(kIOPMAutoPowerOffEnabledKey) == kOSBooleanTrue));
+ if (!getSleepOption(kIOPMAutoPowerOffTimerKey, &powerOffTimer))
+ powerOffTimer = powerOffDelay;
+ if (!getSleepOption(kIOPMDeepSleepTimerKey, &standbyTimer))
+ standbyTimer = standbyDelay;
+
+ DLOG("phase %d, standby %d delay %u timer %u, poweroff %d delay %u timer %u, hibernate 0x%x\n",
+ sleepPhase, standbyEnabled, standbyDelay, standbyTimer,
+ powerOffEnabled, powerOffDelay, powerOffTimer, *hibMode);
+
+ // pmset level overrides
+ if ((*hibMode & kIOHibernateModeOn) == 0)
+ {
+ if (!gSleepPolicyHandler)
+ {
+ standbyEnabled = false;
+ powerOffEnabled = false;
+ }
+ }
+ else if (!(*hibMode & kIOHibernateModeSleep))
+ {
+ // Force hibernate (i.e. mode 25)
+ // If standby is enabled, force standy.
+ // If poweroff is enabled, force poweroff.
+ if (standbyEnabled)
+ currentFactors |= kIOPMSleepFactorStandbyForced;
+ else if (powerOffEnabled)
+ currentFactors |= kIOPMSleepFactorAutoPowerOffForced;
+ else
+ currentFactors |= kIOPMSleepFactorHibernateForced;
+ }
+
+ // Current factors based on environment and assertions
+ if (sleepTimerMaintenance)
+ currentFactors |= kIOPMSleepFactorSleepTimerWake;
+ if (standbyEnabled && sleepToStandby && !gSleepPolicyHandler)
+ currentFactors |= kIOPMSleepFactorSleepTimerWake;
+ if (!clamshellClosed)
+ currentFactors |= kIOPMSleepFactorLidOpen;
+ if (acAdaptorConnected)
+ currentFactors |= kIOPMSleepFactorACPower;
+ if (lowBatteryCondition)
+ currentFactors |= kIOPMSleepFactorBatteryLow;
+ if (!standbyDelay || !standbyTimer)
+ currentFactors |= kIOPMSleepFactorStandbyNoDelay;
+ if (standbyNixed || !standbyEnabled)
+ currentFactors |= kIOPMSleepFactorStandbyDisabled;
+ if (resetTimers)
+ {
+ currentFactors |= kIOPMSleepFactorLocalUserActivity;
+ currentFactors &= ~kIOPMSleepFactorSleepTimerWake;
+ }
+ if (getPMAssertionLevel(kIOPMDriverAssertionUSBExternalDeviceBit) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorUSBExternalDevice;
+ if (getPMAssertionLevel(kIOPMDriverAssertionBluetoothHIDDevicePairedBit) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorBluetoothHIDDevice;
+ if (getPMAssertionLevel(kIOPMDriverAssertionExternalMediaMountedBit) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorExternalMediaMounted;
+ if (getPMAssertionLevel(kIOPMDriverAssertionReservedBit5) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorThunderboltDevice;
+ if (_scheduledAlarms != 0)
+ currentFactors |= kIOPMSleepFactorRTCAlarmScheduled;
+ if (getPMAssertionLevel(kIOPMDriverAssertionMagicPacketWakeEnabledBit) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorMagicPacketWakeEnabled;
+#define TCPKEEPALIVE 1
+#if TCPKEEPALIVE
+ if (getPMAssertionLevel(kIOPMDriverAssertionNetworkKeepAliveActiveBit) !=
+ kIOPMDriverAssertionLevelOff)
+ currentFactors |= kIOPMSleepFactorNetworkKeepAliveActive;
+#endif
+ if (!powerOffEnabled)
+ currentFactors |= kIOPMSleepFactorAutoPowerOffDisabled;
+ if (desktopMode)
+ currentFactors |= kIOPMSleepFactorExternalDisplay;
+ if (userWasActive)
+ currentFactors |= kIOPMSleepFactorLocalUserActivity;
+ if (darkWakeHibernateError && !CAP_HIGHEST(kIOPMSystemCapabilityGraphics))
+ currentFactors |= kIOPMSleepFactorHibernateFailed;
+ if (thermalWarningState)
+ currentFactors |= kIOPMSleepFactorThermalWarning;
+
+ DLOG("sleep factors 0x%llx\n", currentFactors);
+
+ if (gSleepPolicyHandler)
+ {
+ uint32_t savedHibernateMode;
+ IOReturn result;
+
+ if (!gSleepPolicyVars)
+ {
+ gSleepPolicyVars = IONew(IOPMSystemSleepPolicyVariables, 1);
+ if (!gSleepPolicyVars)
+ goto done;
+ bzero(gSleepPolicyVars, sizeof(*gSleepPolicyVars));
+ }
+ gSleepPolicyVars->signature = kIOPMSystemSleepPolicySignature;
+ gSleepPolicyVars->version = kIOPMSystemSleepPolicyVersion;
+ gSleepPolicyVars->currentCapability = _currentCapability;
+ gSleepPolicyVars->highestCapability = _highestCapability;
+ gSleepPolicyVars->sleepFactors = currentFactors;
+ gSleepPolicyVars->sleepReason = lastSleepReason;
+ gSleepPolicyVars->sleepPhase = sleepPhase;
+ gSleepPolicyVars->standbyDelay = standbyDelay;
+ gSleepPolicyVars->standbyTimer = standbyTimer;
+ gSleepPolicyVars->poweroffDelay = powerOffDelay;
+ gSleepPolicyVars->scheduledAlarms = _scheduledAlarms | _userScheduledAlarm;
+ gSleepPolicyVars->poweroffTimer = powerOffTimer;
+
+ if (kIOPMSleepPhase0 == sleepPhase)
+ {
+ // preserve hibernateMode
+ savedHibernateMode = gSleepPolicyVars->hibernateMode;
+ gSleepPolicyVars->hibernateMode = *hibMode;
+ }
+ else if (kIOPMSleepPhase1 == sleepPhase)
+ {
+ // use original hibernateMode for phase2
+ gSleepPolicyVars->hibernateMode = *hibMode;
+ }
+
+ result = gSleepPolicyHandler(gSleepPolicyTarget, gSleepPolicyVars, params);
+
+ if (kIOPMSleepPhase0 == sleepPhase)
+ {
+ // restore hibernateMode
+ gSleepPolicyVars->hibernateMode = savedHibernateMode;
+ }
+
+ if ((result != kIOReturnSuccess) ||
+ (kIOPMSleepTypeInvalid == params->sleepType) ||
+ (params->sleepType >= kIOPMSleepTypeLast) ||
+ (kIOPMSystemSleepParametersVersion != params->version))
+ {
+ MSG("sleep policy handler error\n");
+ goto done;
+ }
+
+ if ((getSleepTypeAttributes(params->sleepType) &
+ kIOPMSleepAttributeHibernateSetup) &&
+ ((*hibMode & kIOHibernateModeOn) == 0))
+ {
+ *hibMode |= (kIOHibernateModeOn | kIOHibernateModeSleep);
+ }
+
+ DLOG("sleep params v%u, type %u, flags 0x%x, wake 0x%x, timer %u, poweroff %u\n",
+ params->version, params->sleepType, params->sleepFlags,
+ params->ecWakeEvents, params->ecWakeTimer, params->ecPoweroffTimer);
+ found = true;
+ goto done;
+ }
+
+ // Policy table is meaningless without standby enabled
+ if (!standbyEnabled)
+ goto done;
+
+ // Validate the sleep policy table
+ policyData = OSDynamicCast(OSData, prop);
+ if (!policyData || (policyData->getLength() <= sizeof(IOPMSystemSleepPolicyTable)))
+ goto done;
+
+ pt = (const IOPMSystemSleepPolicyTable *) policyData->getBytesNoCopy();
+ if ((pt->signature != kIOPMSystemSleepPolicySignature) ||
+ (pt->version != 1) || (0 == pt->entryCount))
+ goto done;
+
+ if (((policyData->getLength() - sizeof(IOPMSystemSleepPolicyTable)) !=
+ (sizeof(IOPMSystemSleepPolicyEntry) * pt->entryCount)))
+ goto done;
+
+ for (uint32_t i = 0; i < pt->entryCount; i++)
+ {
+ const IOPMSystemSleepPolicyEntry * entry = &pt->entries[i];
+ mismatch = (((uint32_t)currentFactors ^ entry->factorBits) & entry->factorMask);
+
+ DLOG("mask 0x%08x, bits 0x%08x, flags 0x%08x, wake 0x%08x, mismatch 0x%08x\n",
+ entry->factorMask, entry->factorBits,
+ entry->sleepFlags, entry->wakeEvents, mismatch);
+ if (mismatch)
+ continue;
+
+ DLOG("^ found match\n");
+ found = true;
+
+ params->version = kIOPMSystemSleepParametersVersion;
+ params->reserved1 = 1;
+ if (entry->sleepFlags & kIOPMSleepFlagHibernate)
+ params->sleepType = kIOPMSleepTypeStandby;
+ else
+ params->sleepType = kIOPMSleepTypeNormalSleep;
+
+ params->ecWakeEvents = entry->wakeEvents;
+ if (entry->sleepFlags & kIOPMSleepFlagSleepTimerEnable)
+ {
+ if (kIOPMSleepPhase2 == sleepPhase)
+ {
+ clock_sec_t now_secs = gIOLastSleepTime.tv_sec;
+
+ if (!_standbyTimerResetSeconds ||
+ (now_secs <= _standbyTimerResetSeconds))
+ {
+ // Reset standby timer adjustment
+ _standbyTimerResetSeconds = now_secs;
+ DLOG("standby delay %u, reset %u\n",
+ standbyDelay, (uint32_t) _standbyTimerResetSeconds);
+ }
+ else if (standbyDelay)
+ {
+ // Shorten the standby delay timer
+ clock_sec_t elapsed = now_secs - _standbyTimerResetSeconds;
+ if (standbyDelay > elapsed)
+ standbyDelay -= elapsed;
+ else
+ standbyDelay = 1; // must be > 0
+
+ DLOG("standby delay %u, elapsed %u\n",
+ standbyDelay, (uint32_t) elapsed);
+ }
+ }
+ params->ecWakeTimer = standbyDelay;
+ }
+ else if (kIOPMSleepPhase2 == sleepPhase)
+ {
+ // A sleep that does not enable the sleep timer will reset
+ // the standby delay adjustment.
+ _standbyTimerResetSeconds = 0;
+ }
+ break;
+ }
+
+done:
+ if (prop)
+ prop->release();
+
+ return found;
+}
+
+static IOPMSystemSleepParameters gEarlySystemSleepParams;
+
+void IOPMrootDomain::evaluateSystemSleepPolicyEarly( void )
+{
+ // Evaluate early (priority interest phase), before drivers sleep.
+
+ DLOG("%s\n", __FUNCTION__);
+ removeProperty(kIOPMSystemSleepParametersKey);
+
+ // Full wake resets the standby timer delay adjustment
+ if (_highestCapability & kIOPMSystemCapabilityGraphics)
+ _standbyTimerResetSeconds = 0;
+
+ hibernateDisabled = false;
+ hibernateMode = 0;
+ getSleepOption(kIOHibernateModeKey, &hibernateMode);
+
+ // Save for late evaluation if sleep is aborted
+ bzero(&gEarlySystemSleepParams, sizeof(gEarlySystemSleepParams));
+
+ if (evaluateSystemSleepPolicy(&gEarlySystemSleepParams, kIOPMSleepPhase1,
+ &hibernateMode))
+ {
+ if (!hibernateRetry &&
+ ((getSleepTypeAttributes(gEarlySystemSleepParams.sleepType) &
+ kIOPMSleepAttributeHibernateSetup) == 0))
+ {
+ // skip hibernate setup
+ hibernateDisabled = true;
+ }
+ }
+
+ // Publish IOPMSystemSleepType
+ uint32_t sleepType = gEarlySystemSleepParams.sleepType;
+ if (sleepType == kIOPMSleepTypeInvalid)
+ {
+ // no sleep policy
+ sleepType = kIOPMSleepTypeNormalSleep;
+ if (hibernateMode & kIOHibernateModeOn)
+ sleepType = (hibernateMode & kIOHibernateModeSleep) ?
+ kIOPMSleepTypeSafeSleep : kIOPMSleepTypeHibernate;
+ }
+ else if ((sleepType == kIOPMSleepTypeStandby) &&
+ (gEarlySystemSleepParams.ecPoweroffTimer))
+ {
+ // report the lowest possible sleep state
+ sleepType = kIOPMSleepTypePowerOff;
+ }
+
+ setProperty(kIOPMSystemSleepTypeKey, sleepType, 32);
+}
+
+void IOPMrootDomain::evaluateSystemSleepPolicyFinal( void )
+{
+ IOPMSystemSleepParameters params;
+ OSData * paramsData;
+ bool wakeNow;
+ // Evaluate sleep policy after sleeping drivers but before platform sleep.
+
+ DLOG("%s\n", __FUNCTION__);
+
+ bzero(¶ms, sizeof(params));
+ wakeNow = false;
+ if (evaluateSystemSleepPolicy(¶ms, kIOPMSleepPhase2, &hibernateMode))
+ {
+ if ((kIOPMSleepTypeStandby == params.sleepType)
+ && gIOHibernateStandbyDisabled && gSleepPolicyVars
+ && (!(kIOPMSleepFactorStandbyForced & gSleepPolicyVars->sleepFactors)))
+ {
+ standbyNixed = true;
+ wakeNow = true;
+ }
+ if (wakeNow
+ || ((hibernateDisabled || hibernateAborted) &&
+ (getSleepTypeAttributes(params.sleepType) &
+ kIOPMSleepAttributeHibernateSetup)))
+ {
+ // Final evaluation picked a state requiring hibernation,
+ // but hibernate isn't going to proceed. Arm a short sleep using
+ // the early non-hibernate sleep parameters.
+ bcopy(&gEarlySystemSleepParams, ¶ms, sizeof(params));
+ params.sleepType = kIOPMSleepTypeAbortedSleep;
+ params.ecWakeTimer = 1;
+ if (standbyNixed)
+ {
+ resetTimers = true;
+ }
+ else
+ {
+ // Set hibernateRetry flag to force hibernate setup on the
+ // next sleep.
+ hibernateRetry = true;
+ }
+ DLOG("wake in %u secs for hibernateDisabled %d, hibernateAborted %d, standbyNixed %d\n",
+ params.ecWakeTimer, hibernateDisabled, hibernateAborted, standbyNixed);
+ }
+ else
+ {
+ hibernateRetry = false;
+ }
+
+ if (kIOPMSleepTypeAbortedSleep != params.sleepType)
+ {
+ resetTimers = false;
+ }
+
+ paramsData = OSData::withBytes(¶ms, sizeof(params));
+ if (paramsData)
+ {
+ setProperty(kIOPMSystemSleepParametersKey, paramsData);
+ paramsData->release();
+ }
+
+ if (getSleepTypeAttributes(params.sleepType) &
+ kIOPMSleepAttributeHibernateSleep)
+ {
+ // Disable sleep to force hibernation
+ gIOHibernateMode &= ~kIOHibernateModeSleep;
+ }
+ }
+}
+
+bool IOPMrootDomain::getHibernateSettings(
+ uint32_t * hibernateModePtr,
+ uint32_t * hibernateFreeRatio,
+ uint32_t * hibernateFreeTime )
+{
+ // Called by IOHibernateSystemSleep() after evaluateSystemSleepPolicyEarly()
+ // has updated the hibernateDisabled flag.
+
+ bool ok = getSleepOption(kIOHibernateModeKey, hibernateModePtr);
+ getSleepOption(kIOHibernateFreeRatioKey, hibernateFreeRatio);
+ getSleepOption(kIOHibernateFreeTimeKey, hibernateFreeTime);
+ if (hibernateDisabled)
+ *hibernateModePtr = 0;
+ else if (gSleepPolicyHandler)
+ *hibernateModePtr = hibernateMode;
+ DLOG("hibernateMode 0x%x\n", *hibernateModePtr);
+ return ok;
+}
+
+bool IOPMrootDomain::getSleepOption( const char * key, uint32_t * option )
+{
+ OSObject * optionsProp;
+ OSDictionary * optionsDict;
+ OSObject * obj = 0;
+ OSNumber * num;
+ bool ok = false;
+
+ optionsProp = copyProperty(kRootDomainSleepOptionsKey);
+ optionsDict = OSDynamicCast(OSDictionary, optionsProp);
+
+ if (optionsDict)
+ {
+ obj = optionsDict->getObject(key);
+ if (obj) obj->retain();
+ }
+ if (!obj)
+ {
+ obj = copyProperty(key);
+ }
+ if (obj)
+ {
+ if ((num = OSDynamicCast(OSNumber, obj)))
+ {
+ *option = num->unsigned32BitValue();
+ ok = true;
+ }
+ else if (OSDynamicCast(OSBoolean, obj))
+ {
+ *option = (obj == kOSBooleanTrue) ? 1 : 0;
+ ok = true;
+ }
+ }
+
+ if (obj)
+ obj->release();
+ if (optionsProp)
+ optionsProp->release();
+
+ return ok;
+}
+#endif /* HIBERNATION */
+
+IOReturn IOPMrootDomain::getSystemSleepType( uint32_t * sleepType, uint32_t * standbyTimer )
+{
+#if HIBERNATION
+ IOPMSystemSleepParameters params;
+ uint32_t hibMode = 0;
+ bool ok;
+
+ if (gIOPMWorkLoop->inGate() == false)
+ {
+ IOReturn ret = gIOPMWorkLoop->runAction(
+ OSMemberFunctionCast(IOWorkLoop::Action, this,
+ &IOPMrootDomain::getSystemSleepType),
+ (OSObject *) this,
+ (void *) sleepType, (void *) standbyTimer);
+ return ret;
+ }
+
+ getSleepOption(kIOHibernateModeKey, &hibMode);
+ bzero(¶ms, sizeof(params));
+
+ ok = evaluateSystemSleepPolicy(¶ms, kIOPMSleepPhase0, &hibMode);
+ if (ok)
+ {
+ *sleepType = params.sleepType;
+ if (!getSleepOption(kIOPMDeepSleepTimerKey, standbyTimer) &&
+ !getSleepOption(kIOPMDeepSleepDelayKey, standbyTimer)) {
+ DLOG("Standby delay is not set\n");
+ *standbyTimer = 0;
+ }
+ return kIOReturnSuccess;
+ }
+#endif
+
+ return kIOReturnUnsupported;
+}
+
+// MARK: -
+// MARK: Shutdown and Restart
+
+//******************************************************************************
+// handlePlatformHaltRestart
+//
+//******************************************************************************
+
+struct HaltRestartApplierContext {
+ IOPMrootDomain * RootDomain;
+ unsigned long PowerState;
+ IOPMPowerFlags PowerFlags;
+ UInt32 MessageType;
+ UInt32 Counter;
+ const char * LogString;
+};
+
+static void
+platformHaltRestartApplier( OSObject * object, void * context )
+{
+ IOPowerStateChangeNotification notify;
+ HaltRestartApplierContext * ctx;
+ AbsoluteTime startTime, elapsedTime;
+ uint32_t deltaTime;
+
+ ctx = (HaltRestartApplierContext *) context;
+
+ memset(¬ify, 0, sizeof(notify));
+ notify.powerRef = (void *)(uintptr_t)ctx->Counter;
+ notify.returnValue = 0;
+ notify.stateNumber = ctx->PowerState;
+ notify.stateFlags = ctx->PowerFlags;
+
+ clock_get_uptime(&startTime);
+ ctx->RootDomain->messageClient( ctx->MessageType, object, (void *)¬ify );
+ deltaTime = computeDeltaTimeMS(&startTime, &elapsedTime);
+
+ if ((deltaTime > kPMHaltTimeoutMS) ||
+ (gIOKitDebug & kIOLogPMRootDomain))
+ {
+ _IOServiceInterestNotifier * notifier;
+ notifier = OSDynamicCast(_IOServiceInterestNotifier, object);
+
+ // IOService children of IOPMrootDomain are not instrumented.
+ // Only IORootParent currently falls under that group.
+
+ if (notifier)
+ {
+ LOG("%s handler %p took %u ms\n",
+ ctx->LogString, OBFUSCATE(notifier->handler), deltaTime);
+ halt_log_enter(ctx->LogString, (const void *) notifier->handler, elapsedTime);
+ }
+ }
+
+ ctx->Counter++;
+}
+
+static void quiescePowerTreeCallback( void * target, void * param )
+{
+ IOLockLock(gPMHaltLock);
+ gPMQuiesced = true;
+ thread_wakeup(param);
+ IOLockUnlock(gPMHaltLock);
+}
+
+void IOPMrootDomain::handlePlatformHaltRestart( UInt32 pe_type )
+{
+ HaltRestartApplierContext ctx;
+ AbsoluteTime startTime, elapsedTime;
+ uint32_t deltaTime;
+
+ memset(&ctx, 0, sizeof(ctx));
+ ctx.RootDomain = this;
+
+ clock_get_uptime(&startTime);
+ switch (pe_type)
+ {
+ case kPEHaltCPU:
+ case kPEUPSDelayHaltCPU:
+ ctx.PowerState = OFF_STATE;
+ ctx.MessageType = kIOMessageSystemWillPowerOff;
+ ctx.LogString = "PowerOff";
+ break;
+
+ case kPERestartCPU:
+ ctx.PowerState = RESTART_STATE;
+ ctx.MessageType = kIOMessageSystemWillRestart;
+ ctx.LogString = "Restart";
+ break;
+
+ case kPEPagingOff:
+ ctx.PowerState = ON_STATE;
+ ctx.MessageType = kIOMessageSystemPagingOff;
+ ctx.LogString = "PagingOff";
+ IOService::updateConsoleUsers(NULL, kIOMessageSystemPagingOff);
+#if HIBERNATION
+ IOHibernateSystemRestart();
+#endif
+ break;
+
+ default:
+ return;
+ }
+
+ // Notify legacy clients
+ applyToInterested(gIOPriorityPowerStateInterest, platformHaltRestartApplier, &ctx);
+
+ // For normal shutdown, turn off File Server Mode.
+ if (kPEHaltCPU == pe_type)
+ {
+ const OSSymbol * setting = OSSymbol::withCString(kIOPMSettingRestartOnPowerLossKey);
+ OSNumber * num = OSNumber::withNumber((unsigned long long) 0, 32);
+ if (setting && num)
+ {
+ setPMSetting(setting, num);
+ setting->release();
+ num->release();
+ }
+ }
+
+ if (kPEPagingOff != pe_type)
+ {
+ // Notify in power tree order
+ notifySystemShutdown(this, ctx.MessageType);
+ }
+
+ IOCPURunPlatformHaltRestartActions(pe_type);
+
+ // Wait for PM to quiesce
+ if ((kPEPagingOff != pe_type) && gPMHaltLock)
+ {
+ AbsoluteTime quiesceTime = mach_absolute_time();
+
+ IOLockLock(gPMHaltLock);
+ gPMQuiesced = false;
+ if (quiescePowerTree(this, &quiescePowerTreeCallback, &gPMQuiesced) ==
+ kIOReturnSuccess)
+ {
+ while (!gPMQuiesced)
+ {
+ IOLockSleep(gPMHaltLock, &gPMQuiesced, THREAD_UNINT);
+ }
+ }
+ IOLockUnlock(gPMHaltLock);
+ deltaTime = computeDeltaTimeMS(&quiesceTime, &elapsedTime);
+ DLOG("PM quiesce took %u ms\n", deltaTime);
+ halt_log_enter("Quiesce", NULL, elapsedTime);
+ }
+
+ deltaTime = computeDeltaTimeMS(&startTime, &elapsedTime);
+ LOG("%s all drivers took %u ms\n", ctx.LogString, deltaTime);
+
+ halt_log_enter(ctx.LogString, NULL, elapsedTime);
+ if (gHaltLog) gHaltLog[gHaltLogPos] = 0;
+
+ deltaTime = computeDeltaTimeMS(&gHaltStartTime, &elapsedTime);
+ LOG("%s total %u ms\n", ctx.LogString, deltaTime);
+
+ if (gHaltLog && gHaltTimeMaxLog && (deltaTime >= gHaltTimeMaxLog))
+ {
+ printf("%s total %d ms:%s\n", ctx.LogString, deltaTime, gHaltLog);
+ }
+ if (gHaltLog && gHaltTimeMaxPanic && (deltaTime >= gHaltTimeMaxPanic))
+ {
+ panic("%s total %d ms:%s\n", ctx.LogString, deltaTime, gHaltLog);
+ }
+}
+
+//******************************************************************************
+// shutdownSystem
+//
+//******************************************************************************
+
+IOReturn IOPMrootDomain::shutdownSystem( void )
+{
+ return kIOReturnUnsupported;
+}
+
+//******************************************************************************
+// restartSystem
+//
+//******************************************************************************
+
+IOReturn IOPMrootDomain::restartSystem( void )
+{
+ return kIOReturnUnsupported;
+}
+
+// MARK: -
+// MARK: System Capability
+
+//******************************************************************************
+// tagPowerPlaneService
+//
+// Running on PM work loop thread.
+//******************************************************************************
+
+void IOPMrootDomain::tagPowerPlaneService(
+ IOService * service,
+ IOPMActions * actions )
+{
+ uint32_t flags = 0;
+ bool isDisplayWrangler;
+
+ memset(actions, 0, sizeof(*actions));
+ actions->target = this;
+
+ if (service == this)
+ {
+ actions->actionPowerChangeStart =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeStart, this,
+ &IOPMrootDomain::handleOurPowerChangeStart);
+
+ actions->actionPowerChangeDone =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeDone, this,
+ &IOPMrootDomain::handleOurPowerChangeDone);
+
+ actions->actionPowerChangeOverride =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeOverride, this,
+ &IOPMrootDomain::overrideOurPowerChange);
+ return;
+ }
+
+#if !NO_KERNEL_HID
+ isDisplayWrangler = (0 != service->metaCast("IODisplayWrangler"));
+ if (isDisplayWrangler)
+ {
+ wrangler = service;
+ }
+#else
+ isDisplayWrangler = false;
+#endif
+
+#if defined(__i386__) || defined(__x86_64__)
+ if (isDisplayWrangler)
+ flags |= kPMActionsFlagIsDisplayWrangler;
+ if (service->getProperty("IOPMStrictTreeOrder"))
+ flags |= kPMActionsFlagIsGraphicsDevice;
+ if (service->getProperty("IOPMUnattendedWakePowerState"))
+ flags |= kPMActionsFlagIsAudioDevice;
+#endif
+
+ // Find the power connection object that is a child of the PCI host
+ // bridge, and has a graphics/audio device attached below. Mark the
+ // power branch for delayed child notifications.
+
+ if (flags)
+ {
+ IORegistryEntry * child = service;
+ IORegistryEntry * parent = child->getParentEntry(gIOPowerPlane);
+
+ while (child != this)
+ {
+ if ((parent == pciHostBridgeDriver) ||
+ (parent == this))
+ {
+ if (OSDynamicCast(IOPowerConnection, child))
+ {
+ IOPowerConnection * conn = (IOPowerConnection *) child;
+ conn->delayChildNotification = true;
+ }
+ break;
+ }
+ child = parent;
+ parent = child->getParentEntry(gIOPowerPlane);
+ }
+ }
+
+ if (flags)
+ {
+ DLOG("%s tag flags %x\n", service->getName(), flags);
+ actions->parameter |= flags;
+ actions->actionPowerChangeOverride =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeOverride, this,
+ &IOPMrootDomain::overridePowerChangeForUIService);
+
+ if (flags & kPMActionsFlagIsDisplayWrangler)
+ {
+ actions->actionActivityTickle =
+ OSMemberFunctionCast(
+ IOPMActionActivityTickle, this,
+ &IOPMrootDomain::handleActivityTickleForDisplayWrangler);
+
+ actions->actionUpdatePowerClient =
+ OSMemberFunctionCast(
+ IOPMActionUpdatePowerClient, this,
+ &IOPMrootDomain::handleUpdatePowerClientForDisplayWrangler);
+ }
+ return;
+ }
+
+ // Locate the first PCI host bridge for PMTrace.
+ if (!pciHostBridgeDevice && service->metaCast("IOPCIBridge"))
+ {
+ IOService * provider = service->getProvider();
+ if (OSDynamicCast(IOPlatformDevice, provider) &&
+ provider->inPlane(gIODTPlane))
+ {
+ pciHostBridgeDevice = provider;
+ pciHostBridgeDriver = service;
+ DLOG("PMTrace found PCI host bridge %s->%s\n",
+ provider->getName(), service->getName());
+ }
+ }
+
+ // Tag top-level PCI devices. The order of PMinit() call does not
+ // change across boots and is used as the PCI bit number.
+ if (pciHostBridgeDevice && service->metaCast("IOPCIDevice"))
+ {
+ // Would prefer to check built-in property, but tagPowerPlaneService()
+ // is called before pciDevice->registerService().
+ IORegistryEntry * parent = service->getParentEntry(gIODTPlane);
+ if ((parent == pciHostBridgeDevice) && service->getProperty("acpi-device"))
+ {
+ int bit = pmTracer->recordTopLevelPCIDevice( service );
+ if (bit >= 0)
+ {
+ // Save the assigned bit for fast lookup.
+ actions->parameter |= (bit & kPMActionsPCIBitNumberMask);
+
+ actions->actionPowerChangeStart =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeStart, this,
+ &IOPMrootDomain::handlePowerChangeStartForPCIDevice);
+
+ actions->actionPowerChangeDone =
+ OSMemberFunctionCast(
+ IOPMActionPowerChangeDone, this,
+ &IOPMrootDomain::handlePowerChangeDoneForPCIDevice);
+ }
+ }
+ }
+}
+
+//******************************************************************************
+// PM actions for root domain
+//******************************************************************************
+
+void IOPMrootDomain::overrideOurPowerChange(
+ IOService * service,
+ IOPMActions * actions,
+ IOPMPowerStateIndex * inOutPowerState,
+ IOPMPowerChangeFlags * inOutChangeFlags,
+ IOPMRequestTag requestTag )
+{
+ uint32_t powerState = (uint32_t) *inOutPowerState;
+ uint32_t changeFlags = *inOutChangeFlags;
+ uint32_t currentPowerState = (uint32_t) getPowerState();
+
+ if (changeFlags & kIOPMParentInitiated)
+ {
+ // Root parent is permanently pegged at max power,
+ // a parent initiated power change is unexpected.
+ *inOutChangeFlags |= kIOPMNotDone;
+ return;
+ }
+
+ if (powerState < currentPowerState)
+ {
+ if (CAP_CURRENT(kIOPMSystemCapabilityGraphics))
+ {
+ // Root domain is dropping power state ON->SLEEP.
+ // If system is in full wake, first enter dark wake by
+ // converting the power drop to a capability change.
+ // Once in dark wake, transition to sleep state ASAP.
+
+ darkWakeToSleepASAP = true;
+
+ // Drop graphics and audio capability
+ _desiredCapability &= ~(
+ kIOPMSystemCapabilityGraphics |
+ kIOPMSystemCapabilityAudio );
+
+ // Convert to capability change (ON->ON)
+ *inOutPowerState = ON_STATE;
+ *inOutChangeFlags |= kIOPMSynchronize;
+
+ // Revert device desire from SLEEP to ON
+ changePowerStateToPriv(ON_STATE);
+ }
+ else
+ {
+ // System is in dark wake, ok to drop power state.
+ // Broadcast root powering down to entire tree.
+ *inOutChangeFlags |= kIOPMRootChangeDown;
+ }
+ }
+ else if (powerState > currentPowerState)
+ {
+ if ((_currentCapability & kIOPMSystemCapabilityCPU) == 0)
+ {
+ // Broadcast power up when waking from sleep, but not for the
+ // initial power change at boot by checking for cpu capability.
+ *inOutChangeFlags |= kIOPMRootChangeUp;
+ }
+ }
+}
+
+void IOPMrootDomain::handleOurPowerChangeStart(
+ IOService * service,
+ IOPMActions * actions,
+ IOPMPowerStateIndex powerState,
+ IOPMPowerChangeFlags * inOutChangeFlags,
+ IOPMRequestTag requestTag )
+{
+ uint32_t changeFlags = *inOutChangeFlags;
+ uint32_t currentPowerState = (uint32_t) getPowerState();
+ uint32_t sleepReason = requestTag ? requestTag : kIOPMSleepReasonIdle;
+ bool publishSleepReason = false;
+
+ _systemTransitionType = kSystemTransitionNone;
+ _systemMessageClientMask = 0;
+ capabilityLoss = false;
+ toldPowerdCapWillChange = false;
+
+ if (lowBatteryCondition)
+ {
+ // Low battery notification may arrive after the initial sleep request
+ // has been queued. Override the sleep reason so powerd and others can
+ // treat this as an emergency sleep.
+ sleepReason = kIOPMSleepReasonLowPower;
+ }
+
+ // 1. Explicit capability change.
+
+ if (changeFlags & kIOPMSynchronize)
+ {
+ if (powerState == ON_STATE)
+ {
+ if (changeFlags & kIOPMSyncNoChildNotify)
+ _systemTransitionType = kSystemTransitionNewCapClient;
+ else
+ _systemTransitionType = kSystemTransitionCapability;
+ }
+ }
+
+ // 2. Going to sleep (cancellation still possible).
+
+ else if (powerState < currentPowerState)
+ _systemTransitionType = kSystemTransitionSleep;
+
+ // 3. Woke from (idle or demand) sleep.
+
+ else if (!systemBooting &&
+ (changeFlags & kIOPMSelfInitiated) &&
+ (powerState > currentPowerState))
+ {
+ _systemTransitionType = kSystemTransitionWake;
+ _desiredCapability = kIOPMSystemCapabilityCPU |
+ kIOPMSystemCapabilityNetwork;
+
+ // Early exit from dark wake to full (e.g. LID open)
+ if (kFullWakeReasonNone != fullWakeReason)
+ {
+ _desiredCapability |= (
+ kIOPMSystemCapabilityGraphics |
+ kIOPMSystemCapabilityAudio );
+ }
+#if HIBERNATION
+ IOHibernateSetWakeCapabilities(_desiredCapability);
+#endif
+ }
+
+ // Update pending wake capability at the beginning of every
+ // state transition (including synchronize). This will become
+ // the current capability at the end of the transition.
+
+ if (kSystemTransitionSleep == _systemTransitionType)
+ {
+ _pendingCapability = 0;
+ capabilityLoss = true;
+
+ }
+ else if (kSystemTransitionNewCapClient != _systemTransitionType)
+ {
+ _pendingCapability = _desiredCapability |
+ kIOPMSystemCapabilityCPU |
+ kIOPMSystemCapabilityNetwork;
+
+ if (_pendingCapability & kIOPMSystemCapabilityGraphics)
+ _pendingCapability |= kIOPMSystemCapabilityAudio;
+
+ if ((kSystemTransitionCapability == _systemTransitionType) &&
+ (_pendingCapability == _currentCapability))
+ {
+ // Cancel the PM state change.
+ _systemTransitionType = kSystemTransitionNone;
+ *inOutChangeFlags |= kIOPMNotDone;
+ }
+ if (__builtin_popcount(_pendingCapability) <
+ __builtin_popcount(_currentCapability))
+ capabilityLoss = true;
+ }
+
+ // 1. Capability change.
+
+ if (kSystemTransitionCapability == _systemTransitionType)
+ {
+ // Dark to Full transition.
+ if (CAP_GAIN(kIOPMSystemCapabilityGraphics))
+ {
+ tracePoint( kIOPMTracePointDarkWakeExit );
+
+ willEnterFullWake();
+ }
+
+ // Full to Dark transition.
+ if (CAP_LOSS(kIOPMSystemCapabilityGraphics))
+ {
+ // Clear previous stats
+ IOLockLock(pmStatsLock);
+ if (pmStatsAppResponses)
+ {
+ pmStatsAppResponses->release();
+ pmStatsAppResponses = OSArray::withCapacity(5);
+ }
+ IOLockUnlock(pmStatsLock);
+
+
+ tracePoint( kIOPMTracePointDarkWakeEntry );
+ *inOutChangeFlags |= kIOPMSyncTellPowerDown;
+ _systemMessageClientMask = kSystemMessageClientPowerd |
+ kSystemMessageClientLegacyApp;
+
+
+ // rdar://15971327
+ // Prevent user active transitions before notifying clients
+ // that system will sleep.
+ preventTransitionToUserActive(true);
+
+ IOService::setAdvisoryTickleEnable( false );
+
+ // Publish the sleep reason for full to dark wake
+ publishSleepReason = true;
+ lastSleepReason = fullToDarkReason = sleepReason;
+
+ // Publish a UUID for the Sleep --> Wake cycle
+ handlePublishSleepWakeUUID(true);
+ if (sleepDelaysReport) {
+ clock_get_uptime(&ts_sleepStart);
+ DLOG("sleepDelaysReport f->9 start at 0x%llx\n", ts_sleepStart);
+ }
+
+ wranglerTickled = false;
+ }
+ }
+
+ // 2. System sleep.
+
+ else if (kSystemTransitionSleep == _systemTransitionType)
+ {
+ // Beginning of a system sleep transition.
+ // Cancellation is still possible.
+ tracePoint( kIOPMTracePointSleepStarted );
+
+ _systemMessageClientMask = kSystemMessageClientAll;
+ if ((_currentCapability & kIOPMSystemCapabilityGraphics) == 0)
+ _systemMessageClientMask &= ~kSystemMessageClientLegacyApp;
+ if ((_highestCapability & kIOPMSystemCapabilityGraphics) == 0)
+ _systemMessageClientMask &= ~kSystemMessageClientKernel;
+#if HIBERNATION
+ gIOHibernateState = 0;
+#endif
+
+ // Record the reason for dark wake back to sleep
+ // System may not have ever achieved full wake
+
+ publishSleepReason = true;
+ lastSleepReason = sleepReason;
+ if (sleepDelaysReport) {
+ clock_get_uptime(&ts_sleepStart);
+ DLOG("sleepDelaysReport 9->0 start at 0x%llx\n", ts_sleepStart);
+ }
+ }
+
+ // 3. System wake.
+
+ else if (kSystemTransitionWake == _systemTransitionType)
+ {
+ tracePoint( kIOPMTracePointWakeWillPowerOnClients );
+ // Clear stats about sleep
+
+ if (_pendingCapability & kIOPMSystemCapabilityGraphics)
+ {
+ willEnterFullWake();
+ }
+ else
+ {
+ // Message powerd only
+ _systemMessageClientMask = kSystemMessageClientPowerd;
+ tellClients(kIOMessageSystemWillPowerOn);
+ }
+ }
+
+ // The only location where the sleep reason is published. At this point
+ // sleep can still be cancelled, but sleep reason should be published
+ // early for logging purposes.
+
+ if (publishSleepReason)
+ {
+ static const char * IOPMSleepReasons[] =
+ {
+ kIOPMClamshellSleepKey,
+ kIOPMPowerButtonSleepKey,
+ kIOPMSoftwareSleepKey,
+ kIOPMOSSwitchHibernationKey,
+ kIOPMIdleSleepKey,
+ kIOPMLowPowerSleepKey,
+ kIOPMThermalEmergencySleepKey,
+ kIOPMMaintenanceSleepKey,
+ kIOPMSleepServiceExitKey,
+ kIOPMDarkWakeThermalEmergencyKey
+ };
+
+ // Record sleep cause in IORegistry
+ uint32_t reasonIndex = sleepReason - kIOPMSleepReasonClamshell;
+ if (reasonIndex < sizeof(IOPMSleepReasons)/sizeof(IOPMSleepReasons[0])) {
+ DLOG("sleep reason %s\n", IOPMSleepReasons[reasonIndex]);
+ setProperty(kRootDomainSleepReasonKey, IOPMSleepReasons[reasonIndex]);
+ }
+ }
+
+ if ((kSystemTransitionNone != _systemTransitionType) &&
+ (kSystemTransitionNewCapClient != _systemTransitionType))
+ {
+ _systemStateGeneration++;
+ systemDarkWake = false;
+
+ DLOG("=== START (%u->%u, 0x%x) type %u, gen %u, msg %x, "
+ "dcp %x:%x:%x\n",
+ currentPowerState, (uint32_t) powerState, *inOutChangeFlags,
+ _systemTransitionType, _systemStateGeneration,
+ _systemMessageClientMask,
+ _desiredCapability, _currentCapability, _pendingCapability);
+ }
+}
+
+void IOPMrootDomain::handleOurPowerChangeDone(
+ IOService * service,
+ IOPMActions * actions,
+ IOPMPowerStateIndex powerState,
+ IOPMPowerChangeFlags changeFlags,
+ IOPMRequestTag requestTag __unused )
+{
+ if (kSystemTransitionNewCapClient == _systemTransitionType)
+ {
+ _systemTransitionType = kSystemTransitionNone;
+ return;
+ }
+
+ if (_systemTransitionType != kSystemTransitionNone)
+ {
+ uint32_t currentPowerState = (uint32_t) getPowerState();
+
+ if (changeFlags & kIOPMNotDone)
+ {
+ // Power down was cancelled or vetoed.
+ _pendingCapability = _currentCapability;
+ lastSleepReason = 0;
+
+ if (!CAP_CURRENT(kIOPMSystemCapabilityGraphics) &&
+ CAP_CURRENT(kIOPMSystemCapabilityCPU))
+ {
+#if !CONFIG_EMBEDDED
+ pmPowerStateQueue->submitPowerEvent(
+ kPowerEventPolicyStimulus,
+ (void *) kStimulusDarkWakeReentry,
+ _systemStateGeneration );
+#else
+ // On embedded, there are no factors that can prolong a
+ // "darkWake" when a power down is vetoed. We need to
+ // promote to "fullWake" at least once so that factors
+ // that prevent idle sleep can assert themselves if required
+ pmPowerStateQueue->submitPowerEvent(
+ kPowerEventPolicyStimulus,
+ (void *) kStimulusDarkWakeActivityTickle);
+#endif
+ }
+
+ // Revert device desire to max.
+ changePowerStateToPriv(ON_STATE);
+ }
+ else
+ {
+ // Send message on dark wake to full wake promotion.
+ // tellChangeUp() handles the normal SLEEP->ON case.
+
+ if (kSystemTransitionCapability == _systemTransitionType)
+ {
+ if (CAP_GAIN(kIOPMSystemCapabilityGraphics))
+ {
+ lastSleepReason = 0; // stop logging wrangler tickles
+ tellClients(kIOMessageSystemHasPoweredOn);
+ }
+ if (CAP_LOSS(kIOPMSystemCapabilityGraphics))
+ {
+ // Going dark, reset full wake state
+ // userIsActive will be cleared by wrangler powering down
+ fullWakeReason = kFullWakeReasonNone;
+
+ if (ts_sleepStart) {
+ clock_get_uptime(&wake2DarkwakeDelay);
+ SUB_ABSOLUTETIME(&wake2DarkwakeDelay, &ts_sleepStart);
+ DLOG("sleepDelaysReport f->9 end 0x%llx\n", wake2DarkwakeDelay);
+ ts_sleepStart = 0;
+ }
+ }
+ }
+
+ // Reset state after exiting from dark wake.
+
+ if (CAP_GAIN(kIOPMSystemCapabilityGraphics) ||
+ CAP_LOSS(kIOPMSystemCapabilityCPU))
+ {
+ darkWakeMaintenance = false;
+ darkWakeToSleepASAP = false;
+ pciCantSleepValid = false;
+ darkWakeSleepService = false;
+
+ if (CAP_LOSS(kIOPMSystemCapabilityCPU))
+ {
+ // Remove the influence of display power assertion
+ // before next system wake.
+ if (wrangler) wrangler->changePowerStateForRootDomain(
+ kWranglerPowerStateMin );
+ removeProperty(gIOPMUserTriggeredFullWakeKey);
+ }
+ }
+
+ // Entered dark mode.
+
+ if (((_pendingCapability & kIOPMSystemCapabilityGraphics) == 0) &&
+ (_pendingCapability & kIOPMSystemCapabilityCPU))
+ {
+ // Queue an evaluation of whether to remain in dark wake,
+ // and for how long. This serves the purpose of draining
+ // any assertions from the queue.
+
+ pmPowerStateQueue->submitPowerEvent(
+ kPowerEventPolicyStimulus,
+ (void *) kStimulusDarkWakeEntry,
+ _systemStateGeneration );
+ }
+ }
+
+ DLOG("=== FINISH (%u->%u, 0x%x) type %u, gen %u, msg %x, "
+ "dcp %x:%x:%x, dbgtimer %u\n",
+ currentPowerState, (uint32_t) powerState, changeFlags,
+ _systemTransitionType, _systemStateGeneration,
+ _systemMessageClientMask,
+ _desiredCapability, _currentCapability, _pendingCapability,
+ _lastDebugWakeSeconds);
+
+ if (_pendingCapability & kIOPMSystemCapabilityGraphics)
+ {
+ displayWakeCnt++;
+#if DARK_TO_FULL_EVALUATE_CLAMSHELL
+ if (clamshellExists && fullWakeThreadCall &&
+ CAP_HIGHEST(kIOPMSystemCapabilityGraphics))
+ {
+ // Not the initial graphics full power, graphics won't
+ // send a power notification to trigger a lid state
+ // evaluation.
+
+ AbsoluteTime deadline;
+ clock_interval_to_deadline(45, kSecondScale, &deadline);
+ thread_call_enter_delayed(fullWakeThreadCall, deadline);
+ }
+#endif
+ }
+ else if (CAP_GAIN(kIOPMSystemCapabilityCPU))
+ darkWakeCnt++;
+
+ // Update current system capability.
+ if (_currentCapability != _pendingCapability)
+ _currentCapability = _pendingCapability;
+
+ // Update highest system capability.
+
+ _highestCapability |= _currentCapability;
+
+ if (darkWakePostTickle &&
+ (kSystemTransitionWake == _systemTransitionType) &&
+ (gDarkWakeFlags & kDarkWakeFlagHIDTickleMask) ==
+ kDarkWakeFlagHIDTickleLate)
+ {
+ darkWakePostTickle = false;
+ reportUserInput();
+ }
+ else if (wranglerTickled) {
+ requestFullWake( kFullWakeReasonLocalUser );
+ }
+
+ // Reset tracepoint at completion of capability change,
+ // completion of wake transition, and aborted sleep transition.
+
+ if ((_systemTransitionType == kSystemTransitionCapability) ||
+ (_systemTransitionType == kSystemTransitionWake) ||
+ ((_systemTransitionType == kSystemTransitionSleep) &&
+ (changeFlags & kIOPMNotDone)))
+ {
+ setProperty(kIOPMSystemCapabilitiesKey, _currentCapability, 64);
+ tracePoint( kIOPMTracePointSystemUp );
+ }
+
+ _systemTransitionType = kSystemTransitionNone;
+ _systemMessageClientMask = 0;
+ toldPowerdCapWillChange = false;
+
+ logGraphicsClamp = false;
+
+ if (lowBatteryCondition) {
+ privateSleepSystem (kIOPMSleepReasonLowPower);
+ }
+ else if ((fullWakeReason == kFullWakeReasonDisplayOn) && (!displayPowerOnRequested)) {
+ // Request for full wake is removed while system is waking up to full wake
+ DLOG("DisplayOn fullwake request is removed\n");
+ handleDisplayPowerOn();
+ }
+
+ }
+}
+
+//******************************************************************************
+// PM actions for graphics and audio.
+//******************************************************************************
+
+void IOPMrootDomain::overridePowerChangeForUIService(
+ IOService * service,
+ IOPMActions * actions,
+ IOPMPowerStateIndex * inOutPowerState,
+ IOPMPowerChangeFlags * inOutChangeFlags )
+{
+ uint32_t powerState = (uint32_t) *inOutPowerState;
+ uint32_t changeFlags = (uint32_t) *inOutChangeFlags;
+
+ if (kSystemTransitionNone == _systemTransitionType)
+ {
+ // Not in midst of a system transition.
+ // Do not modify power limit enable state.
+ }
+ else if ((actions->parameter & kPMActionsFlagLimitPower) == 0)
+ {
+ // Activate power limiter.
+
+ if ((actions->parameter & kPMActionsFlagIsDisplayWrangler) &&
+ ((_pendingCapability & kIOPMSystemCapabilityGraphics) == 0) &&
+ (changeFlags & kIOPMSynchronize))
+ {
+ actions->parameter |= kPMActionsFlagLimitPower;
+ }
+ else if ((actions->parameter & kPMActionsFlagIsAudioDevice) &&
+ ((gDarkWakeFlags & kDarkWakeFlagAudioNotSuppressed) == 0) &&
+ ((_pendingCapability & kIOPMSystemCapabilityAudio) == 0) &&
+ (changeFlags & kIOPMSynchronize))
+ {
+ actions->parameter |= kPMActionsFlagLimitPower;
+ }
+ else if ((actions->parameter & kPMActionsFlagIsGraphicsDevice) &&
+ (_systemTransitionType == kSystemTransitionSleep))
+ {
+ // For graphics devices, arm the limiter when entering
+ // system sleep. Not when dropping to dark wake.
+ actions->parameter |= kPMActionsFlagLimitPower;
+ }
+
+ if (actions->parameter & kPMActionsFlagLimitPower)
+ {
+ DLOG("+ plimit %s %p\n",
+ service->getName(), OBFUSCATE(service));
+ }
+ }
+ else
+ {
+ // Remove power limit.
+
+ if ((actions->parameter & (
+ kPMActionsFlagIsDisplayWrangler |
+ kPMActionsFlagIsGraphicsDevice )) &&
+ (_pendingCapability & kIOPMSystemCapabilityGraphics))
+ {
+ actions->parameter &= ~kPMActionsFlagLimitPower;
+ }
+ else if ((actions->parameter & kPMActionsFlagIsAudioDevice) &&
+ (_pendingCapability & kIOPMSystemCapabilityAudio))
+ {
+ actions->parameter &= ~kPMActionsFlagLimitPower;
+ }
+
+ if ((actions->parameter & kPMActionsFlagLimitPower) == 0)
+ {
+ DLOG("- plimit %s %p\n",
+ service->getName(), OBFUSCATE(service));
+ }
+ }
+
+ if (actions->parameter & kPMActionsFlagLimitPower)
+ {
+ uint32_t maxPowerState = (uint32_t)(-1);
projects / apple / xnu.git / blobdiff