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
43typedef struct pal_rtc_nanotime pal_rtc_nanotime_t;
44extern uint64_t tsc_rebase_abs_time;
45
46extern void _rtc_nanotime_adjust(
47 uint64_t tsc_base_delta,
48 pal_rtc_nanotime_t *dst);
49
50extern uint64_t _rtc_nanotime_read(
51 pal_rtc_nanotime_t *rntp);
52
53extern uint64_t _rtc_tsc_to_nanoseconds(
54 uint64_t value,
55 pal_rtc_nanotime_t *rntp);
56
57extern void rtclock_intr(x86_saved_state_t *regs);
58
59
60/*
61 * Timer control.
62 */
63typedef struct {
64 void (*rtc_config)(void);
65 uint64_t (*rtc_set) (uint64_t, uint64_t);
66} rtc_timer_t;
67extern rtc_timer_t *rtc_timer;
68
69extern void rtc_timer_init(void);
70
71extern void rtclock_early_init(void);
72extern void rtc_nanotime_init(uint64_t);
73extern void rtc_decrementer_configure(void);
74#endif /* _I386_RTCLOCK_PROTOS_H_ */
75