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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2012 NetApp, 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, 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 NETAPP, INC ``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 NETAPP, INC OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*
* Copyright 2013 Pluribus Networks Inc.
* Copyright 2017 Joyent, Inc.
*/
#ifndef _VMM_HOST_H_
#define _VMM_HOST_H_
#ifndef __FreeBSD__
#include <sys/cpuvar.h>
#endif
#ifndef _KERNEL
#error "no user-serviceable parts inside"
#endif
struct xsave_limits {
int xsave_enabled;
uint64_t xcr0_allowed;
uint32_t xsave_max_size;
};
void vmm_host_state_init(void);
uint64_t vmm_get_host_pat(void);
uint64_t vmm_get_host_efer(void);
uint64_t vmm_get_host_cr0(void);
uint64_t vmm_get_host_cr4(void);
uint64_t vmm_get_host_xcr0(void);
uint64_t vmm_get_host_datasel(void);
uint64_t vmm_get_host_codesel(void);
uint64_t vmm_get_host_tsssel(void);
uint64_t vmm_get_host_fsbase(void);
uint64_t vmm_get_host_idtrbase(void);
const struct xsave_limits *vmm_get_xsave_limits(void);
/*
* Inline access to host state that is used on every VM entry
*/
static __inline uint64_t
vmm_get_host_trbase(void)
{
#ifdef __FreeBSD__
return ((uint64_t)PCPU_GET(tssp));
#else
return ((u_long)CPU->cpu_tss);
#endif
}
static __inline uint64_t
vmm_get_host_gdtrbase(void)
{
#ifdef __FreeBSD__
return ((uint64_t)&gdt[NGDT * curcpu]);
#else
desctbr_t gdtr;
rd_gdtr(&gdtr);
return (gdtr.dtr_base);
#endif
}
#ifdef __FreeBSD__
struct pcpu;
extern struct pcpu __pcpu[];
#endif
static __inline uint64_t
vmm_get_host_gsbase(void)
{
#ifdef __FreeBSD__
return ((uint64_t)&__pcpu[curcpu]);
#else
return (rdmsr(MSR_GSBASE));
#endif
}
#ifndef __FreeBSD__
static __inline uint64_t
vmm_get_host_fssel(void)
{
return (KFS_SEL);
}
static __inline uint64_t
vmm_get_host_gssel(void)
{
return (KGS_SEL);
}
#endif
#endif
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