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