1 /* 2 * Copyright (c) 2010 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 * @OSF_COPYRIGHT@ 30 */ 31 /* 32 * @APPLE_FREE_COPYRIGHT@ 33 */ 34 /* 35 * File: rtclock_protos.h 36 * Purpose: C Routines for handling the machine dependent 37 * real-time clock. 38 */ 39 40 #ifndef _I386_RTCLOCK_PROTOS_H_ 41 #define _I386_RTCLOCK_PROTOS_H_ 42 43 typedef struct pal_rtc_nanotime pal_rtc_nanotime_t; 44 extern uint64_t tsc_rebase_abs_time; 45 46 extern void _rtc_nanotime_adjust( 47 uint64_t tsc_base_delta, 48 pal_rtc_nanotime_t *dst); 49 50 extern uint64_t _rtc_nanotime_read( 51 pal_rtc_nanotime_t *rntp); 52 53 extern uint64_t _rtc_tsc_to_nanoseconds( 54 uint64_t value, 55 pal_rtc_nanotime_t *rntp); 56 57 extern int rtclock_intr(x86_saved_state_t *regs); 58 59 60 /* 61 * Timer control. 62 */ 63 typedef struct { 64 void (*rtc_config)(void); 65 uint64_t (*rtc_set)(uint64_t, uint64_t); 66 } rtc_timer_t; 67 extern rtc_timer_t *rtc_timer; 68 69 extern void rtc_timer_init(void); 70 71 extern void rtclock_early_init(void); 72 extern void rtc_nanotime_init(uint64_t); 73 extern void rtc_decrementer_configure(void); 74 #endif /* _I386_RTCLOCK_PROTOS_H_ */ 75