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: releng/11.2/sys/x86/include/pvclock.h 278184 2015-02-04 08:33:04Z bryanv $
27 */
28
29 #ifndef X86_PVCLOCK
30 #define X86_PVCLOCK
31
32 struct 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
46 struct pvclock_wall_clock {
47 uint32_t version;
48 uint32_t sec;
49 uint32_t nsec;
50 };
51
52 void pvclock_resume(void);
53 uint64_t pvclock_get_last_cycles(void);
54 uint64_t pvclock_tsc_freq(struct pvclock_vcpu_time_info *ti);
55 uint64_t pvclock_get_timecount(struct pvclock_vcpu_time_info *ti);
56 void pvclock_get_wallclock(struct pvclock_wall_clock *wc,
57 struct timespec *ts);
58
59 #endif
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