/*
* Copyright (c) 1998-2000 Apple Computer, Inc. All rights reserved.
*
- * @APPLE_LICENSE_HEADER_START@
+ * @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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
+ * 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
* Please see the License for the specific language governing rights and
* limitations under the License.
*
- * @APPLE_LICENSE_HEADER_END@
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
-extern "C" {
-#include <kern/thread_call.h>
-}
+#ifndef _IOKIT_IOSERVICEPM_H
+#define _IOKIT_IOSERVICEPM_H
-#include <libkern/c++/OSObject.h>
-#include <IOKit/IOLocks.h>
-class IOPMinformee;
-class IOPMinformeeList;
-class IOPMchangeNoteList;
-class IOPMpmChild;
+#include <IOKit/pwr_mgt/IOPM.h>
+
+class IOService;
+class IOServicePM;
+class IOPowerConnection;
class IOWorkLoop;
-class IOCommandQueue;
class IOCommandGate;
class IOTimerEventSource;
class IOPlatformExpert;
-#include <IOKit/pwr_mgt/IOPM.h>
-
-
-/*!
-@defined ACK_TIMER_PERIOD
-@discussion When an IOService is waiting for acknowledgement to a power state change
-notification from an interested driver or the controlling driver its ack timer is ticking every tenth of a second.
-(100000000 nanoseconds are one tenth of a second).
-*/
- #define ACK_TIMER_PERIOD 100000000
-
-
-
-/*!
-@class IOPMpriv
-@abstract Private power management private instance variables for IOService objects.
-*/
-class IOPMpriv : public OSObject
-{
- friend class IOService;
-
- OSDeclareDefaultStructors(IOPMpriv)
-
- public:
-
-/*! @var we_are_root
- TRUE if this device is the root power domain.
-*/
- bool we_are_root;
-
- /*! @var interestedDrivers
- List of interested drivers.
- */
- IOPMinformeeList * interestedDrivers;
-
- /*! @var children
- List of power domain children.
- */
- IOPMinformeeList * children;
-
- /*! @var changeList
- List of pending power state changes.
- */
- IOPMchangeNoteList * changeList;
-
- /*! @var driver_timer
- Timeout on waiting for controlling driver to acknowledgeSetPowerState.
- */
- IOReturn driver_timer;
-
- /*! @var ackTimer */
- thread_call_t ackTimer;
-
- /*! @var settleTimer */
- thread_call_t settleTimer;
-
- /*! @var machine_state
- State number of state machine processing current change note.
- */
- unsigned long machine_state;
-
- /*! @var settle_time
- Settle timer after changing power state.
- */
- unsigned long settle_time;
-
- /*! @var head_note
- Ordinal of change note currently being processed.
- */
- long head_note;
-
- /*! @var head_note_flags
- Copy of flags field in change note currently being processed.
- */
- unsigned long head_note_flags;
-
- /*! @var head_note_state
- Copy of newStateNumberfield in change note currently being processed.
- */
- unsigned long head_note_state;
-
- /*! @var head_note_outputFlags
- OutputPowerCharacter field from change note currently being processed.
- */
- unsigned long head_note_outputFlags;
-
- /*! @var head_note_domainState
- Power domain flags from parent... (only on parent change).
- */
- unsigned long head_note_domainState;
-
- /*! @var head_note_parent
- Pointer to initiating parent... (only on parent change).
- */
- IOPowerConnection * head_note_parent;
-
- /*! @var head_note_capabilityFlags
- Copy of capabilityFlags field in change note currently being processed.
- */
- unsigned long head_note_capabilityFlags;
-
- /*! @var head_note_pendingAcks
- Number of acks we are waiting for during notification.
- */
- unsigned long head_note_pendingAcks;
-
- /*! @var our_lock
- Used to control access to head_note_pendingAcks and driver_timer.
- */
- IOLock * our_lock;
-
- /*! @var flags_lock
- Used to control access to response flags array.
- */
- IOLock * flags_lock;
-
- /*! @var queue_lock
- Used to control access to change note queue.
- */
- IOLock * queue_lock;
-
- /*! @var initial_change
- True forces first state to be broadcast even if it isn't a change.
- */
- bool initial_change;
-
- /*! @var need_to_become_usable
- Someone called makeUsable before we had a controlling driver.
- */
- bool need_to_become_usable;
-
- /*! @var device_overrides
- State changes are made based only on subclass's desire.
- */
- bool device_overrides;
-
- /*! @var clampOn
- Domain is clamped on till first child registers.
- */
- bool clampOn;
-
- /*! @var owner
- Points to object which made this struct. Used for debug output only.
- */
- IOService * owner;
-
- /*! @var activityLock
- Used to protect activity flag.
- */
- IOLock * activityLock;
-
- /*! @var timerEventSrc
- An idle timer.
- */
- IOTimerEventSource * timerEventSrc;
-
- /*! @var idle_timer_period
- Timer's period in seconds.
- */
- unsigned long idle_timer_period;
-
- /*! @var clampTimerEventSrc
- Timer for clamping power on.
- */
- IOTimerEventSource * clampTimerEventSrc;
-
- /*! @var device_active
- True: there has been device activity since last idle timer expiration.
- */
- bool device_active;
-
- /*! @var device_active_timestamp
- Time in ticks of last activity.
- */
- AbsoluteTime device_active_timestamp;
-
- /*! @var driverDesire
- This is the power state desired by our controlling driver. It is initialized to myCurrentState and is changed
- when the controlling driver calls changePowerStateTo. A change in driverDesire may cause a change in ourDesiredPowerState.
-*/
- unsigned long driverDesire;
-
-
-
- /*! @var deviceDesire
- This is the power state desired by a subclassed device object. It is initialized to myCurrentState and is changed when the subclassed object calls changePowerStateToPriv. A change in deviceDesire may cause a change in ourDesiredPowerState.
-*/
- unsigned long deviceDesire;
-
-
-
- /*! @var ourDesiredPowerState
-This is the power state we desire currently. If equal to myCurrentState, we're happy.
-Otherwise, we're waiting for the parent to raise the power domain to at least this level.
-
-If this is a power domain, this is the maximum of all our children's desires, driverDesire, and deviceDesire.
-It increases when:
-a child asks for more power via requestDomainState,
-the controlling driver asks for more power via changePowerStateTo
-
-It decreases when:
-we lose a child and the child had the highest power need of all our children,
-the child with the highest power need suggests a lower power domain state,
-the controlling driver asks for lower power for some reason via changePowerStateTo
-
-If this is not a power domain, ourDesiredPowerState represents the greater of driverDesire and deviceDesire.
-It increases when:
-the controlling driver asks for more power via changePowerStateTo
-some driver calls makeUsable
-a subclassed object asks for more power via changePowerStateToPriv
-
-It decreases when:
-the controlling driver asks for lower power for some reason via changePowerStateTo
-a subclassed object asks for lower power for some reason via changePowerStateToPriv
-*/
- unsigned long ourDesiredPowerState;
-
-
- /*! @var previousRequest
-This is a reminder of what our parent thinks our need is. Whenever it changes,
-we call requestDomainState in the parent to keep it current. It is usually equal to ourDesiredPowerState
-except while a power change is in progress.
-*/
- unsigned long previousRequest;
-
-
- /*! @var askingFor
- Not used.
-*/
- unsigned long askingFor;
-
-
- /*! @var imminentState
- Usually the same as myCurrentState, except right after calling powerStateWillChangeTo.
-*/
- unsigned long imminentState;
-
- /*! @function serialize
- Serialize private instance variables for debug output (IORegistryDumper).
-*/
- virtual bool serialize(OSSerialize *s) const;
-
+#ifdef XNU_KERNEL_PRIVATE
+class IOPMinformee;
+class IOPMinformeeList;
+class IOPMWorkQueue;
+class IOPMRequest;
+class IOPMRequestQueue;
+class IOPMCompletionQueue;
+
+typedef unsigned long IOPMPowerStateIndex;
+typedef uint32_t IOPMPowerChangeFlags;
+
+struct IOPMDriverCallEntry {
+ queue_chain_t link;
+ thread_t thread;
+ IOService * target;
};
+/* Binary compatibility with drivers that access pm_vars */
+#ifdef __LP64__
+#define PM_VARS_SUPPORT 0
+#else
+#define PM_VARS_SUPPORT 1
+#endif
-
-
-/*!
-@class IOPMprott
-@abstract Protected power management instance variables for IOService objects.
-*/
-class IOPMprot : public OSObject //management
+#if PM_VARS_SUPPORT
+/* Deprecated in version 10.5 */
+class IOPMprot : public OSObject
{
friend class IOService;
OSDeclareDefaultStructors(IOPMprot)
- public:
-
- /*! @var ourName
- From getName(), used in logging.
- */
- const char * ourName;
-
- /*! @var thePlatform
- From getPlatform, used in logging and registering.
- */
- IOPlatformExpert * thePlatform;
-
- /*! @var theNumberOfPowerStates
- The number of states in the array.
- */
- unsigned long theNumberOfPowerStates; // the number of states in the array
-
- /*! @var thePowerStates
- The array.
- */
- IOPMPowerState thePowerStates[IOPMMaxPowerStates];
-
- /*! @var theControllingDriver
- Points to the controlling driver.
- */
- IOService * theControllingDriver;
-
- /*! @var aggressiveness
- Current value of power management aggressiveness.
- */
- unsigned long aggressiveness;
-
- /*! @var current_aggressiveness_values
- Array of aggressiveness values.
- */
- unsigned long current_aggressiveness_values [kMaxType+1];
-
- /*! @var current_aggressiveness_validity
- True for values that are currently valid.
- */
- bool current_aggressiveness_valid [kMaxType+1];
-
- /*! @var myCurrentState
- The ordinal of our current power state.
- */
- unsigned long myCurrentState;
-
- /*! @var parentsKnowState
- True if all our parents know the state of their power domain.
- */
- bool parentsKnowState;
-
- /*! @var parentsCurrentPowerFlags
- Logical OR of power flags for the current state of each power domainparent.
- */
- IOPMPowerFlags parentsCurrentPowerFlags;
-
- /*! @var maxCapability
- Ordinal of highest state we can achieve in current power domain state.
- */
- unsigned long maxCapability;
-
- /*! @var PMworkloop
- Points to the single power management workloop.
- */
- IOWorkLoop * PMworkloop;
-
- /*! @var commandQueue
- Used to serialize idle-power-down and busy-power-up.
- */
- IOCommandQueue * commandQueue;
-
- /*! @var PMcommandGate
- Used to serialize timer expirations and incoming acknowledgements.
- */
- IOCommandGate * PMcommandGate;
-
- /*! @var myCharacterFlags
- Logical OR of all output power character flags in the array.
- */
- IOPMPowerFlags myCharacterFlags;
-
- /*! @var serialNumber
- Used to uniquely identify power management notification to apps and clients.
- */
- UInt16 serialNumber;
-
- /*! @var responseFlags
- Points to an OSArray which manages responses from notified apps and clients.
- */
- OSArray* responseFlags;
-
- /*! @var doNotPowerDown
- Keeps track of any negative responses from notified apps and clients.
- */
- bool doNotPowerDown;
-
- /*! @var childLock
- Used to serialize scanning the children.
- */
- IOLock * childLock;
-
- /*! @var parentLock
- Used to serialize scanning the parents.
- */
- IOLock * parentLock;
-
- /*! @var outofbandparameter
- Used to communicate desired function to tellClientsWithResponse().
- This is used because it avoids changing the signatures of the affected virtual methods.
- */
- int outofbandparameter;
-
- /*! @function serialize
-Serialize protected instance variables for debug output (IORegistryDumper).
-*/
- virtual bool serialize(OSSerialize *s) const;
-
+public:
+ const char * ourName;
+ IOPlatformExpert * thePlatform;
+ unsigned long theNumberOfPowerStates;
+ IOPMPowerState thePowerStates[IOPMMaxPowerStates];
+ IOService * theControllingDriver;
+ unsigned long aggressiveness;
+ unsigned long current_aggressiveness_values[kMaxType+1];
+ bool current_aggressiveness_valid[kMaxType+1];
+ unsigned long myCurrentState;
};
-
+#endif /* PM_VARS_SUPPORT */
+#endif /* XNU_KERNEL_PRIVATE */
+#endif /* !_IOKIT_IOSERVICEPM_H */
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