5f62cf7ec4
MFC after: 1 week Sponsored by: Microsoft Differential Revision: https://reviews.freebsd.org/D9057
97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*-
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* Copyright (c) 2009-2012,2016 Microsoft Corp.
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* Copyright (c) 2012 NetApp Inc.
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* Copyright (c) 2012 Citrix Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _HYPERV_H_
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#define _HYPERV_H_
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/systm.h>
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#define MSR_HV_TIME_REF_COUNT 0x40000020
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#define CPUID_HV_MSR_TIME_REFCNT 0x0002 /* MSR_HV_TIME_REF_COUNT */
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#define CPUID_HV_MSR_SYNIC 0x0004 /* MSRs for SynIC */
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#define CPUID_HV_MSR_SYNTIMER 0x0008 /* MSRs for SynTimer */
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#define CPUID_HV_MSR_APIC 0x0010 /* MSR_HV_{EOI,ICR,TPR} */
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#define CPUID_HV_MSR_HYPERCALL 0x0020 /* MSR_HV_GUEST_OS_ID
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* MSR_HV_HYPERCALL */
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#define CPUID_HV_MSR_VP_INDEX 0x0040 /* MSR_HV_VP_INDEX */
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#define CPUID_HV_MSR_REFERENCE_TSC 0x0200 /* MSR_HV_REFERENCE_TSC */
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#define CPUID_HV_MSR_GUEST_IDLE 0x0400 /* MSR_HV_GUEST_IDLE */
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#ifndef NANOSEC
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#define NANOSEC 1000000000ULL
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#endif
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#define HYPERV_TIMER_NS_FACTOR 100ULL
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#define HYPERV_TIMER_FREQ (NANOSEC / HYPERV_TIMER_NS_FACTOR)
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#endif /* _KERNEL */
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#define HYPERV_REFTSC_DEVNAME "hv_tsc"
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/*
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* Hyper-V Reference TSC
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*/
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struct hyperv_reftsc {
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volatile uint32_t tsc_seq;
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volatile uint32_t tsc_rsvd1;
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volatile uint64_t tsc_scale;
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volatile int64_t tsc_ofs;
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} __packed __aligned(PAGE_SIZE);
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#ifdef CTASSERT
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CTASSERT(sizeof(struct hyperv_reftsc) == PAGE_SIZE);
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#endif
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#ifdef _KERNEL
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struct hyperv_guid {
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uint8_t hv_guid[16];
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} __packed;
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#define HYPERV_GUID_STRLEN 40
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typedef uint64_t (*hyperv_tc64_t)(void);
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int hyperv_guid2str(const struct hyperv_guid *, char *,
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size_t);
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/*
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* hyperv_tc64 could be NULL, if there were no suitable Hyper-V
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* specific timecounter.
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*/
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extern hyperv_tc64_t hyperv_tc64;
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extern u_int hyperv_features; /* CPUID_HV_MSR_ */
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#endif /* _KERNEL */
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#endif /* _HYPERV_H_ */
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