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	1	/*
	2	* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	#ifdef KERNEL_PRIVATE
	23	#ifndef _I386_PMCPU_H_
	24	#define _I386_PMCPU_H_
	25
	26	#include <kern/pms.h>
	27
	28	#ifndef ASSEMBLER
	29
	30	typedef enum { C1, C2, C3, C4, Hlt, C3Res, All, Cnum } pm_Cstate_t;
	31	typedef struct pmStats {
	32	uint64_t pmNapCnt[Cnum]; /* Total nap calls for states */
	33	uint64_t pmNapTime[Cnum]; /* Total nap time for states */
	34	uint64_t pmNapC2HPET; /* Total nap time for C2 using HPET for stats */
	35	uint64_t pmNapC4HPET; /* Total nap time for C4 using HPET for stats */
	36	uint64_t pmNapHPETPops; /* Number of times we detect HPET popping */
	37	uint64_t pmHPETRupt; /* Number of HPET interruptions */
	38	uint32_t pmCurC3Res; /* Current value of the C3 residency timer */
	39	uint32_t pmLastApic; /* Last value of apic timer */
	40	uint32_t pmNewApic; /* New value of apic timer */
	41	uint64_t pmHpetTim; /* Time to next interrupt in HPET ticks */
	42	uint64_t pmHpetCmp; /* HPET comparator */
	43	uint64_t pmHpetCfg; /* HPET configuration */
	44	uint64_t pmLSNs; /* (TEST) Last set nanotime */
	45	uint64_t pmLLHpet; /* (TEST) Last loaded HPET */
	46	} pmStats_t;
	47
	48	#define MAX_PSTATES 32 /* architectural limit */
	49
	50	typedef enum { Cn1, Cn2, Cn3, Cn4, Cnmax } Cstate_number_t;
	51	typedef struct {
	52	Cstate_number_t number;
	53	uint32_t hint;
	54	} Cstate_hint_t;
	55
	56
	57	struct pmData {
	58	uint8_t pad[93];
	59	};
	60	typedef struct pmData pmData_t;
	61
	62	#define pmNapHalt 0x00000010
	63	#define pmNapC1 0x00000008
	64	#define pmNapC2 0x00000004
	65	#define pmNapC3 0x00000002
	66	#define pmNapC4 0x00000001
	67	#define pmNapMask 0x000000FF
	68
	69	#define cfgAdr 0xCF8
	70	#define cfgDat 0xCFC
	71	#define lpcCfg (0x80000000 \| (0 << 16) \| (31 << 11) \| (0 << 8))
	72
	73	/*
	74	* Dispatch table for functions that get installed when the power
	75	* management KEXT loads.
	76	*/
	77	typedef struct
	78	{
	79	/*
	80	* The following are the stepper table interfaces.
	81	*/
	82	void (*pmsCPUMachineInit)(void);
	83	void (*pmsCPUInit)(void);
	84	void (*pmsCPUSet)(uint32_t sel);
	85	void (*pmsCPUConf)(void);
	86	void (*pmsCPURun)(uint32_t nstep);
	87	uint32_t (*pmsCPUQuery)(void);
	88	uint32_t (*pmsCPUPackageQuery)(void);
	89	void (*pmsCPUYellowFlag)(void);
	90	void (*pmsCPUGreenFlag)(void);
	91	kern_return_t (pmsCPULoadVIDTable)(uint16_t tablep, int nstates);
	92	kern_return_t (*pmsCPUSetPStateLimit)(uint32_t limit);
	93
	94	/*
	95	* The following are the 'C' State interfaces.
	96	*/
	97	void (*cstateInit)(void);
	98	void (*cstateMachineIdle)(uint32_t napCtl);
	99	kern_return_t (cstateTableSet)(Cstate_hint_t tablep, unsigned int nstates);
	100	uint32_t (*cstateNapPolicy)(uint32_t forcenap, uint32_t napCtl);
	101	} pmDispatch_t;
	102
	103	typedef struct {
	104	uint32_t PState;
	105	uint32_t PLimit;
	106	uint16_t VIDTable[MAX_PSTATES];
	107	uint32_t VIDTableCount;
	108	Cstate_hint_t CStates[Cnmax];
	109	uint32_t CStatesCount;
	110	} pmInitState_t;
	111
	112	typedef struct {
	113	void (*Park)(void);
	114	void (*Run)(uint32_t nstep);
	115	void (*RunLocal)(uint32_t nstep);
	116	void (*SetStep)(uint32_t nstep, int dir);
	117	void (*NapPolicy)(void);
	118	kern_return_t (Build)(pmsDef pd, uint32_t pdsize, pmsSetFunc_t *functab, uint32_t platformData, pmsQueryFunc_t queryFunc);
	119	pmStats_t (Stats)(void);
	120	pmsd (StepperData)(void);
	121	uint64_t (HPETAddr)(void);
	122	pmInitState_t *InitState;
	123	void (*resetPop)(void);
	124	} pmCallBacks_t;
	125
	126	extern pmDispatch_t *pmDispatch;
	127
	128	extern uint32_t maxBusDelay;
	129	extern uint32_t C4C2SnoopDelay;
	130	extern uint32_t forcenap;
	131
	132	void power_management_init(void);
	133	void machine_nap_policy(void);
	134	kern_return_t Cstate_table_set(Cstate_hint_t *tablep, unsigned int nstates);
	135	void machine_idle_cstate(void);
	136	void pmRegister(pmDispatch_t cpuFuncs, pmCallBacks_t callbacks);
	137	void pmUnRegister(pmDispatch_t *cpuFuncs);
	138
	139	#endif /* ASSEMBLER */
	140	#endif /* _I386_PMCPU_H_ */
	141	#endif /* KERNEL_PRIVATE */