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| /* | ||
| * Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved. | ||
| * | ||
| * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | ||
| * | ||
| * This file contains Original Code and/or Modifications of Original Code | ||
| * as defined in and that are subject to the Apple Public Source License | ||
| * Version 2.0 (the 'License'). You may not use this file except in | ||
| * compliance with the License. The rights granted to you under the License | ||
| * may not be used to create, or enable the creation or redistribution of, | ||
| * unlawful or unlicensed copies of an Apple operating system, or to | ||
| * circumvent, violate, or enable the circumvention or violation of, any | ||
| * terms of an Apple operating system software license agreement. | ||
| * | ||
| * Please obtain a copy of the License at | ||
| * http://www.opensource.apple.com/apsl/ and read it before using this file. | ||
| * | ||
| * The Original Code and all software distributed under the License are | ||
| * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | ||
| * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | ||
| * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | ||
| * Please see the License for the specific language governing rights and | ||
| * limitations under the License. | ||
| * | ||
| * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | ||
| */ | ||
| #ifndef _IOKIT_ROOTDOMAIN_H | ||
| #define _IOKIT_ROOTDOMAIN_H | ||
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| #include <IOKit/IOService.h> | ||
| #include <IOKit/pwr_mgt/IOPM.h> | ||
| #include <IOKit/IOBufferMemoryDescriptor.h> | ||
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| /*! | ||
| * Types for PM Assertions | ||
| * For creating, releasing, and getting PM assertion levels. | ||
| */ | ||
|
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| /*! IOPMDriverAssertionType | ||
| * A bitfield describing a set of assertions. May be used to specify which assertions | ||
| * to set with <link>IOPMrootDomain::createPMAssertion</link>; or to query which | ||
| * assertions are set with <link>IOPMrootDomain::releasePMAssertion</link>. | ||
| */ | ||
| typedef uint64_t IOPMDriverAssertionType; | ||
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| /* IOPMDriverAssertionID | ||
| * Drivers may create PM assertions to request system behavior (keep the system awake, | ||
| * or keep the display awake). When a driver creates an assertion via | ||
| * <link>IOPMrootDomain::createPMAssertion</link>, PM returns a handle to | ||
| * the assertion of type IOPMDriverAssertionID. | ||
| */ | ||
| typedef uint64_t IOPMDriverAssertionID; | ||
| #define kIOPMUndefinedDriverAssertionID 0 | ||
|
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| /* IOPMDriverAssertionLevel | ||
| * Possible values for IOPMDriverAssertionLevel are <link>kIOPMDriverAssertionLevelOff</link> | ||
| * and <link>kIOPMDriverAssertionLevelOn</link> | ||
| */ | ||
| typedef uint32_t IOPMDriverAssertionLevel; | ||
| #define kIOPMDriverAssertionLevelOff 0 | ||
| #define kIOPMDriverAssertionLevelOn 255 | ||
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| /* | ||
| * Flags for get/setSleepSupported() | ||
| */ | ||
| enum { | ||
| kRootDomainSleepNotSupported = 0x00000000, | ||
| kRootDomainSleepSupported = 0x00000001, | ||
| kFrameBufferDeepSleepSupported = 0x00000002, | ||
| kPCICantSleep = 0x00000004 | ||
| }; | ||
|
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| /* | ||
| *IOPMrootDomain registry property keys | ||
| */ | ||
| #define kRootDomainSupportedFeatures "Supported Features" | ||
| #define kRootDomainSleepReasonKey "Last Sleep Reason" | ||
| #define kRootDomainSleepOptionsKey "Last Sleep Options" | ||
| #define kIOPMRootDomainWakeReasonKey "Wake Reason" | ||
| #define kIOPMRootDomainWakeTypeKey "Wake Type" | ||
| #define kIOPMRootDomainPowerStatusKey "Power Status" | ||
|
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| /* | ||
| * Possible sleep reasons found under kRootDomainSleepReasonsKey | ||
| */ | ||
| #define kIOPMClamshellSleepKey "Clamshell Sleep" | ||
| #define kIOPMPowerButtonSleepKey "Power Button Sleep" | ||
| #define kIOPMSoftwareSleepKey "Software Sleep" | ||
| #define kIOPMOSSwitchHibernationKey "OS Switch Sleep" | ||
| #define kIOPMIdleSleepKey "Idle Sleep" | ||
| #define kIOPMLowPowerSleepKey "Low Power Sleep" | ||
| #define kIOPMThermalEmergencySleepKey "Thermal Emergency Sleep" | ||
| #define kIOPMMaintenanceSleepKey "Maintenance Sleep" | ||
|
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| /* | ||
| * String constants for communication with PM CPU | ||
| */ | ||
| #define kIOPMRootDomainLidCloseCString "LidClose" | ||
| #define kIOPMRootDomainBatPowerCString "BatPower" | ||
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| /* | ||
| * Supported Feature bitfields for IOPMrootDomain::publishFeature() | ||
| */ | ||
| enum { | ||
| kIOPMSupportedOnAC = (1<<0), | ||
| kIOPMSupportedOnBatt = (1<<1), | ||
| kIOPMSupportedOnUPS = (1<<2) | ||
| }; | ||
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| typedef IOReturn (*IOPMSettingControllerCallback) | ||
| (OSObject *target, const OSSymbol *type, | ||
| OSObject *val, uintptr_t refcon); | ||
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| __BEGIN_DECLS | ||
| IONotifier * registerSleepWakeInterest( | ||
| IOServiceInterestHandler, void *, void * = 0); | ||
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| IONotifier * registerPrioritySleepWakeInterest( | ||
| IOServiceInterestHandler handler, | ||
| void * self, void * ref = 0); | ||
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| IOReturn acknowledgeSleepWakeNotification(void * ); | ||
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| IOReturn vetoSleepWakeNotification(void * PMrefcon); | ||
| __END_DECLS | ||
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| #define IOPM_ROOTDOMAIN_REV 2 | ||
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| class IOPMrootDomain: public IOService | ||
| { | ||
| OSDeclareFinalStructors(IOPMrootDomain) | ||
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| public: | ||
| static IOPMrootDomain * construct( void ); | ||
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| virtual bool start( IOService * provider ) override; | ||
| virtual IOReturn setAggressiveness( unsigned long, unsigned long ) override; | ||
| virtual IOReturn getAggressiveness( unsigned long, unsigned long * ) override; | ||
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| virtual IOReturn sleepSystem( void ); | ||
| IOReturn sleepSystemOptions( OSDictionary *options ); | ||
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| virtual IOReturn setProperties( OSObject * ) override; | ||
| virtual bool serializeProperties( OSSerialize * s ) const override; | ||
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| /*! @function systemPowerEventOccurred | ||
| @abstract Other drivers may inform IOPMrootDomain of system PM events | ||
| @discussion systemPowerEventOccurred is a richer alternative to receivePowerNotification() | ||
| Only Apple-owned kexts should have reason to call systemPowerEventOccurred. | ||
| @param event An OSSymbol describing the type of power event. | ||
| @param value A 32-bit integer value associated with the event. | ||
| @param shouldUpdate indicates whether the root domain should send a notification | ||
| to interested parties. Pass false if you're calling systemPowerEventOccurred | ||
| several times in succession; and pass true only on the last invocatino. | ||
| @result kIOReturnSuccess on success */ | ||
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| IOReturn systemPowerEventOccurred( | ||
| const OSSymbol *event, | ||
| uint32_t intValue ); | ||
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| IOReturn systemPowerEventOccurred( | ||
| const OSSymbol *event, | ||
| OSObject *value ); | ||
|
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| virtual IOReturn receivePowerNotification( UInt32 msg ); | ||
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| virtual void setSleepSupported( IOOptionBits flags ); | ||
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| virtual IOOptionBits getSleepSupported( void ); | ||
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| void wakeFromDoze( void ); | ||
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| // KEXT driver announces support of power management feature | ||
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| void publishFeature( const char *feature ); | ||
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| // KEXT driver announces support of power management feature | ||
| // And specifies power sources with kIOPMSupportedOn{AC/Batt/UPS} bitfield. | ||
| // Returns a unique uint32_t identifier for later removing support for this | ||
| // feature. | ||
| // NULL is acceptable for uniqueFeatureID for kexts without plans to unload. | ||
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| void publishFeature( const char *feature, | ||
| uint32_t supportedWhere, | ||
| uint32_t *uniqueFeatureID); | ||
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| // KEXT driver announces removal of a previously published power management | ||
| // feature. Pass 'uniqueFeatureID' returned from publishFeature() | ||
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| IOReturn removePublishedFeature( uint32_t removeFeatureID ); | ||
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| /*! @function copyPMSetting | ||
| @abstract Copy the current value for a PM setting. Returns an OSNumber or | ||
| OSData depending on the setting. | ||
| @param whichSetting Name of the desired setting. | ||
| @result OSObject value if valid, NULL otherwise. */ | ||
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| OSObject * copyPMSetting( OSSymbol *whichSetting ); | ||
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| /*! @function registerPMSettingController | ||
| @abstract Register for callbacks on changes to certain PM settings. | ||
| @param settings NULL terminated array of C strings, each string for a PM | ||
| setting that the caller is interested in and wants to get callbacks for. | ||
| @param callout C function ptr or member function cast as such. | ||
| @param target The target of the callback, usually 'this' | ||
| @param refcon Will be passed to caller in callback; for caller's use. | ||
| @param handle Caller should keep the OSObject * returned here. If non-NULL, | ||
| handle will have a retain count of 1 on return. To deregister, pass to | ||
| unregisterPMSettingController() | ||
| @result kIOReturnSuccess on success. */ | ||
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| IOReturn registerPMSettingController( | ||
| const OSSymbol *settings[], | ||
| IOPMSettingControllerCallback callout, | ||
| OSObject *target, | ||
| uintptr_t refcon, | ||
| OSObject **handle); // out param | ||
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| /*! @function registerPMSettingController | ||
| @abstract Register for callbacks on changes to certain PM settings. | ||
| @param settings NULL terminated array of C strings, each string for a PM | ||
| setting that the caller is interested in and wants to get callbacks for. | ||
| @param supportedPowerSources bitfield indicating which power sources these | ||
| settings are supported for (kIOPMSupportedOnAC, etc.) | ||
| @param callout C function ptr or member function cast as such. | ||
| @param target The target of the callback, usually 'this' | ||
| @param refcon Will be passed to caller in callback; for caller's use. | ||
| @param handle Caller should keep the OSObject * returned here. If non-NULL, | ||
| handle will have a retain count of 1 on return. To deregister, pass to | ||
| unregisterPMSettingController() | ||
| @result kIOReturnSuccess on success. */ | ||
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| IOReturn registerPMSettingController( | ||
| const OSSymbol *settings[], | ||
| uint32_t supportedPowerSources, | ||
| IOPMSettingControllerCallback callout, | ||
| OSObject *target, | ||
| uintptr_t refcon, | ||
| OSObject **handle); // out param | ||
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| virtual IONotifier * registerInterest( | ||
| const OSSymbol * typeOfInterest, | ||
| IOServiceInterestHandler handler, | ||
| void * target, void * ref = 0 ) override; | ||
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| virtual IOReturn callPlatformFunction( | ||
| const OSSymbol *functionName, | ||
| bool waitForFunction, | ||
| void *param1, void *param2, | ||
| void *param3, void *param4 ) override; | ||
|
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| /*! @function createPMAssertion | ||
| @abstract Creates an assertion to influence system power behavior. | ||
| @param whichAssertionBits A bitfield specify the assertion that the caller requests. | ||
| @param assertionLevel An integer detailing the initial assertion level, kIOPMDriverAssertionLevelOn | ||
| or kIOPMDriverAssertionLevelOff. | ||
| @param ownerService A pointer to the caller's IOService class, for tracking. | ||
| @param ownerDescription A reverse-DNS string describing the caller's identity and reason. | ||
| @result On success, returns a new assertion of type IOPMDriverAssertionID | ||
| */ | ||
| IOPMDriverAssertionID createPMAssertion( | ||
| IOPMDriverAssertionType whichAssertionsBits, | ||
| IOPMDriverAssertionLevel assertionLevel, | ||
| IOService *ownerService, | ||
| const char *ownerDescription); | ||
|
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| /* @function setPMAssertionLevel | ||
| @abstract Modify the level of a pre-existing assertion. | ||
| @discussion Change the value of a PM assertion to influence system behavior, | ||
| without undergoing the work required to create or destroy an assertion. Suggested | ||
| for clients who will assert and de-assert needs for PM behavior several times over | ||
| their lifespan. | ||
| @param assertionID An assertion ID previously returned by <link>createPMAssertion</link> | ||
| @param assertionLevel The new assertion level. | ||
| @result kIOReturnSuccess if it worked; kIOReturnNotFound or other IOReturn error on failure. | ||
| */ | ||
| IOReturn setPMAssertionLevel(IOPMDriverAssertionID assertionID, IOPMDriverAssertionLevel assertionLevel); | ||
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| /*! @function getPMAssertionLevel | ||
| @absract Returns the active level of the specified assertion(s). | ||
| @discussion Returns <link>kIOPMDriverAssertionLevelOff</link> or | ||
| <link>kIOPMDriverAssertionLevelOn</link>. If multiple assertions are specified | ||
| in the bitfield, only returns <link>kIOPMDriverAssertionLevelOn</link> | ||
| if all assertions are active. | ||
| @param whichAssertionBits Bits defining the assertion or assertions the caller is interested in | ||
| the level of. If in doubt, pass <link>kIOPMDriverAssertionCPUBit</link> as the argument. | ||
| @result Returns <link>kIOPMDriverAssertionLevelOff</link> or | ||
| <link>kIOPMDriverAssertionLevelOn</link> indicating the specified assertion's levels, if available. | ||
| If the assertions aren't supported on this machine, or aren't recognized by the OS, the | ||
| result is undefined. | ||
| */ | ||
| IOPMDriverAssertionLevel getPMAssertionLevel(IOPMDriverAssertionType whichAssertionBits); | ||
|
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| /*! @function releasePMAssertion | ||
| @abstract Removes an assertion to influence system power behavior. | ||
| @result On success, returns a new assertion of type IOPMDriverAssertionID * | ||
| */ | ||
| IOReturn releasePMAssertion(IOPMDriverAssertionID releaseAssertion); | ||
|
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| private: | ||
| virtual IOReturn changePowerStateTo( unsigned long ordinal ); | ||
| virtual IOReturn changePowerStateToPriv( unsigned long ordinal ); | ||
| virtual IOReturn requestPowerDomainState( IOPMPowerFlags, IOPowerConnection *, unsigned long ) override; | ||
| virtual void powerChangeDone( unsigned long ) override; | ||
| virtual bool tellChangeDown( unsigned long ) override; | ||
| virtual bool askChangeDown( unsigned long ) override; | ||
| virtual void tellChangeUp( unsigned long ) override; | ||
| virtual void tellNoChangeDown( unsigned long ) override; | ||
| }; | ||
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| #endif /* _IOKIT_ROOTDOMAIN_H */ |
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