1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 NetApp, 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, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 /* 31 * This file and its contents are supplied under the terms of the 32 * Common Development and Distribution License ("CDDL"), version 1.0. 33 * You may only use this file in accordance with the terms of version 34 * 1.0 of the CDDL. 35 * 36 * A full copy of the text of the CDDL should have accompanied this 37 * source. A copy of the CDDL is also available via the Internet at 38 * http://www.illumos.org/license/CDDL. 39 * 40 * Copyright 2013 Pluribus Networks Inc. 41 * Copyright 2017 Joyent, Inc. 42 */ 43 44 #ifndef _VMM_HOST_H_ 45 #define _VMM_HOST_H_ 46 47 #ifndef __FreeBSD__ 48 #include <sys/cpuvar.h> 49 #endif 50 51 #ifndef _KERNEL 52 #error "no user-serviceable parts inside" 53 #endif 54 55 struct xsave_limits { 56 int xsave_enabled; 57 uint64_t xcr0_allowed; 58 uint32_t xsave_max_size; 59 }; 60 61 void vmm_host_state_init(void); 62 63 uint64_t vmm_get_host_pat(void); 64 uint64_t vmm_get_host_efer(void); 65 uint64_t vmm_get_host_cr0(void); 66 uint64_t vmm_get_host_cr4(void); 67 uint64_t vmm_get_host_xcr0(void); 68 uint64_t vmm_get_host_datasel(void); 69 uint64_t vmm_get_host_codesel(void); 70 uint64_t vmm_get_host_tsssel(void); 71 uint64_t vmm_get_host_fsbase(void); 72 uint64_t vmm_get_host_idtrbase(void); 73 const struct xsave_limits *vmm_get_xsave_limits(void); 74 75 /* 76 * Inline access to host state that is used on every VM entry 77 */ 78 static __inline uint64_t 79 vmm_get_host_trbase(void) 80 { 81 return ((uint64_t)CPU->cpu_tss); 82 } 83 84 static __inline uint64_t 85 vmm_get_host_gdtrbase(void) 86 { 87 88 #ifdef __FreeBSD__ 89 return ((uint64_t)*PCPU_PTR(gdt)); 90 #else 91 desctbr_t gdtr; 92 93 rd_gdtr(&gdtr); 94 return (gdtr.dtr_base); 95 #endif 96 } 97 98 static __inline uint64_t 99 vmm_get_host_gsbase(void) 100 { 101 102 #ifdef __FreeBSD__ 103 return ((uint64_t)get_pcpu()); 104 #else 105 return (rdmsr(MSR_GSBASE)); 106 #endif 107 } 108 109 #ifndef __FreeBSD__ 110 static __inline uint64_t 111 vmm_get_host_fssel(void) 112 { 113 return (KFS_SEL); 114 } 115 116 static __inline uint64_t 117 vmm_get_host_gssel(void) 118 { 119 return (KGS_SEL); 120 } 121 #endif 122 #endif 123