1/*-
2 * Copyright (c) 2014, Bryan Venteicher <bryanv@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29#ifndef X86_PVCLOCK
30#define X86_PVCLOCK
31
32struct pvclock_vcpu_time_info {
33	uint32_t	version;
34	uint32_t	pad0;
35	uint64_t	tsc_timestamp;
36	uint64_t	system_time;
37	uint32_t	tsc_to_system_mul;
38	int8_t		tsc_shift;
39	uint8_t		flags;
40	uint8_t		pad[2];
41};
42
43#define PVCLOCK_FLAG_TSC_STABLE		0x01
44#define PVCLOCK_FLAG_GUEST_PASUED	0x02
45
46struct pvclock_wall_clock {
47	uint32_t	version;
48	uint32_t	sec;
49	uint32_t	nsec;
50};
51
52void		pvclock_resume(void);
53uint64_t	pvclock_get_last_cycles(void);
54uint64_t	pvclock_tsc_freq(struct pvclock_vcpu_time_info *ti);
55uint64_t	pvclock_get_timecount(struct pvclock_vcpu_time_info *ti);
56void		pvclock_get_wallclock(struct pvclock_wall_clock *wc,
57		    struct timespec *ts);
58
59#endif
60