hyperv.h revision 311223 
1/*-
2 * Copyright (c) 2009-2012,2016 Microsoft Corp.
3 * Copyright (c) 2012 NetApp Inc.
4 * Copyright (c) 2012 Citrix Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice unmodified, this list of conditions, and the following
12 *    disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * $FreeBSD: stable/10/sys/dev/hyperv/include/hyperv.h 311223 2017-01-04 01:58:38Z sephe $
29 */
30
31#ifndef _HYPERV_H_
32#define _HYPERV_H_
33
34#ifdef _KERNEL
35
36#include <sys/param.h>
37#include <sys/systm.h>
38
39#define MSR_HV_TIME_REF_COUNT		0x40000020
40
41#define CPUID_HV_MSR_TIME_REFCNT	0x0002	/* MSR_HV_TIME_REF_COUNT */
42#define CPUID_HV_MSR_SYNIC		0x0004	/* MSRs for SynIC */
43#define CPUID_HV_MSR_SYNTIMER		0x0008	/* MSRs for SynTimer */
44#define CPUID_HV_MSR_APIC		0x0010	/* MSR_HV_{EOI,ICR,TPR} */
45#define CPUID_HV_MSR_HYPERCALL		0x0020	/* MSR_HV_GUEST_OS_ID
46						 * MSR_HV_HYPERCALL */
47#define CPUID_HV_MSR_VP_INDEX		0x0040	/* MSR_HV_VP_INDEX */
48#define CPUID_HV_MSR_REFERENCE_TSC	0x0200	/* MSR_HV_REFERENCE_TSC */
49#define CPUID_HV_MSR_GUEST_IDLE		0x0400	/* MSR_HV_GUEST_IDLE */
50
51#ifndef NANOSEC
52#define NANOSEC				1000000000ULL
53#endif
54#define HYPERV_TIMER_NS_FACTOR		100ULL
55#define HYPERV_TIMER_FREQ		(NANOSEC / HYPERV_TIMER_NS_FACTOR)
56
57#endif	/* _KERNEL */
58
59#define HYPERV_REFTSC_DEVNAME		"hv_tsc"
60
61/*
62 * Hyper-V Reference TSC
63 */
64struct hyperv_reftsc {
65	volatile uint32_t		tsc_seq;
66	volatile uint32_t		tsc_rsvd1;
67	volatile uint64_t		tsc_scale;
68	volatile int64_t		tsc_ofs;
69} __packed __aligned(PAGE_SIZE);
70#ifdef CTASSERT
71CTASSERT(sizeof(struct hyperv_reftsc) == PAGE_SIZE);
72#endif
73
74#ifdef _KERNEL
75
76struct hyperv_guid {
77	uint8_t				hv_guid[16];
78} __packed;
79
80#define HYPERV_GUID_STRLEN		40
81
82int		hyperv_guid2str(const struct hyperv_guid *, char *, size_t);
83
84extern u_int	hyperv_features;	/* CPUID_HV_MSR_ */
85
86#endif	/* _KERNEL */
87
88#endif  /* _HYPERV_H_ */
89