/* * Copyright (c) 2006 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@ */ #ifdef KERNEL_PRIVATE #ifndef _I386_HPET_H_ #define _I386_HPET_H_ /* * HPET kernel functions to support the HPET KEXT and the * power management KEXT. */ /* * Memory mapped registers for the HPET */ typedef struct hpetReg { uint64_t GCAP_ID; /* General capabilities */ uint64_t rsv1; uint64_t GEN_CONF; /* General configuration */ uint64_t rsv2; uint64_t GINTR_STA; /* General Interrupt status */ uint64_t rsv3[25]; uint64_t MAIN_CNT; /* Main counter */ uint64_t rsv4; uint64_t TIM0_CONF; /* Timer 0 config and cap */ #define TIM_CONF 0 #define Tn_INT_ENB_CNF 4 uint64_t TIM0_COMP; /* Timer 0 comparator */ #define TIM_COMP 8 uint64_t rsv5[2]; uint64_t TIM1_CONF; /* Timer 1 config and cap */ uint64_t TIM1_COMP; /* Timer 1 comparator */ uint64_t rsv6[2]; uint64_t TIM2_CONF; /* Timer 2 config and cap */ uint64_t TIM2_COMP; /* Timer 2 comparator */ uint64_t rsv7[2]; } hpetReg; typedef struct hpetReg hpetReg_t; typedef struct hpetTimer { uint64_t Config; /* Timer config and capabilities */ uint64_t Compare; /* Timer comparitor */ } hpetTimer_t; struct hpetInfo { uint64_t hpetCvtt2n; uint64_t hpetCvtn2t; uint64_t tsc2hpet; uint64_t hpet2tsc; uint64_t bus2hpet; uint64_t hpet2bus; uint32_t rcbaArea; uint32_t rcbaAreap; }; typedef struct hpetInfo hpetInfo_t; struct hpetRequest { uint32_t flags; uint32_t hpetOffset; uint32_t hpetVector; }; typedef struct hpetRequest hpetRequest_t; #define HPET_REQFL_64BIT 0x00000001 /* Timer is 64 bits */ extern uint64_t hpetFemto; extern uint64_t hpetFreq; extern uint64_t hpetCvtt2n; extern uint64_t hpetCvtn2t; extern uint64_t tsc2hpet; extern uint64_t hpet2tsc; extern uint64_t bus2hpet; extern uint64_t hpet2bus; extern vm_offset_t rcbaArea; extern uint32_t rcbaAreap; extern void map_rcbaAread(void); extern void hpet_init(void); extern void hpet_save(void); extern void hpet_restore(void); #ifdef XNU_KERNEL_PRIVATE extern int HPETInterrupt(void); #endif extern int hpet_register_callback(int (*hpet_reqst)(uint32_t apicid, void *arg, hpetRequest_t *hpet), void *arg); extern int hpet_request(uint32_t cpu); extern uint64_t rdHPET(void); extern void hpet_get_info(hpetInfo_t *info); #define hpetAddr 0xFED00000 #define hptcAE 0x80 #endif /* _I386_HPET_H_ */ #endif /* KERNEL_PRIVATE */