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	1	/*
	2	* Copyright (c) 1998-2019 Apple Inc. All rights reserved.
	3	*
	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
	5	*
	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
	25	*
	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
	27	*/
	28
	29	#ifndef _IOKIT_IOSERVICEPM_H
	30	#define _IOKIT_IOSERVICEPM_H
	31
	32	#include <IOKit/pwr_mgt/IOPM.h>
	33
	34	class IOService;
	35	class IOServicePM;
	36	class IOPowerConnection;
	37	class IOWorkLoop;
	38	class IOCommandGate;
	39	class IOTimerEventSource;
	40	class IOPlatformExpert;
	41
	42	#ifdef XNU_KERNEL_PRIVATE
	43	class IOPMinformee;
	44	class IOPMinformeeList;
	45	class IOPMWorkQueue;
	46	class IOPMRequest;
	47	class IOPMRequestQueue;
	48	class IOPMCompletionQueue;
	49
	50	typedef void (IOPMCompletionAction)(void target, void * param);
	51
	52	// PM channels for IOReporting
	53	#ifndef kPMPowerStatesChID
	54	#define kPMPowerStatesChID IOREPORT_MAKEID('P','M','S','t','H','i','s','t')
	55	#endif
	56
	57	#ifndef kPMCurrStateChID
	58	#define kPMCurrStateChID IOREPORT_MAKEID( 'P','M','C','u','r','S','t','\0' )
	59	#endif
	60
	61	// state_id details in PM channels
	62	#define kPMReportPowerOn 0x01
	63	#define kPMReportDeviceUsable 0x02
	64	#define kPMReportLowPower 0x04
	65
	66
	67	typedef unsigned long IOPMPowerStateIndex;
	68	typedef uint32_t IOPMPowerChangeFlags;
	69	typedef uint32_t IOPMRequestTag;
	70
	71	struct IOPMDriverCallEntry {
	72	queue_chain_t link;
	73	thread_t thread;
	74	IOService * target;
	75	const void *callMethod;
	76	};
	77
	78	// Power clients (desires)
	79	extern const OSSymbol * gIOPMPowerClientDevice;
	80	extern const OSSymbol * gIOPMPowerClientDriver;
	81	extern const OSSymbol * gIOPMPowerClientChildProxy;
	82	extern const OSSymbol * gIOPMPowerClientChildren;
	83	extern const OSSymbol * gIOPMPowerClientRootDomain;
	84
	85	/* Binary compatibility with drivers that access pm_vars */
	86	#ifdef __LP64__
	87	#define PM_VARS_SUPPORT 0
	88	#else
	89	#define PM_VARS_SUPPORT 1
	90	#endif
	91
	92	#if PM_VARS_SUPPORT
	93	/* Deprecated in version 10.5 */
	94	class IOPMprot : public OSObject
	95	{
	96	friend class IOService;
	97
	98	OSDeclareDefaultStructors(IOPMprot);
	99
	100	public:
	101	const char * ourName;
	102	IOPlatformExpert * thePlatform;
	103	unsigned long theNumberOfPowerStates;
	104	IOPMPowerState thePowerStates[IOPMMaxPowerStates];
	105	IOService * theControllingDriver;
	106	unsigned long aggressiveness;
	107	unsigned long current_aggressiveness_values[kMaxType + 1];
	108	bool current_aggressiveness_valid[kMaxType + 1];
	109	unsigned long myCurrentState;
	110	};
	111	#endif /* PM_VARS_SUPPORT */
	112	#endif /* XNU_KERNEL_PRIVATE */
	113	#endif /* !_IOKIT_IOSERVICEPM_H */