1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com) 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 * $FreeBSD$ 29 */ 30 31 #ifndef _SVM_SOFTC_H_ 32 #define _SVM_SOFTC_H_ 33 34 #include "x86.h" 35 36 #define SVM_IO_BITMAP_SIZE (3 * PAGE_SIZE) 37 #define SVM_MSR_BITMAP_SIZE (2 * PAGE_SIZE) 38 39 struct asid { 40 uint64_t gen; /* range is [1, ~0UL] */ 41 uint32_t num; /* range is [1, nasid - 1] */ 42 }; 43 44 /* 45 * XXX separate out 'struct vmcb' from 'svm_vcpu' to avoid wasting space 46 * due to VMCB alignment requirements. 47 */ 48 struct svm_vcpu { 49 struct vmcb vmcb; /* hardware saved vcpu context */ 50 struct svm_regctx swctx; /* software saved vcpu context */ 51 uint64_t vmcb_pa; /* VMCB physical address */ 52 uint64_t nextrip; /* next instruction to be executed by guest */ 53 int lastcpu; /* host cpu that the vcpu last ran on */ 54 uint32_t dirty; /* state cache bits that must be cleared */ 55 long eptgen; /* pmap->pm_eptgen when the vcpu last ran */ 56 struct asid asid; 57 } __aligned(PAGE_SIZE); 58 59 /* 60 * SVM softc, one per virtual machine. 61 */ 62 struct svm_softc { 63 uint8_t apic_page[VM_MAXCPU][PAGE_SIZE]; 64 struct svm_vcpu vcpu[VM_MAXCPU]; 65 vm_offset_t nptp; /* nested page table */ 66 uint8_t *iopm_bitmap; /* shared by all vcpus */ 67 uint8_t *msr_bitmap; /* shared by all vcpus */ 68 struct vm *vm; 69 struct vm_mtrr mtrr[VM_MAXCPU]; 70 }; 71 72 CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0); 73 74 static __inline struct svm_vcpu * 75 svm_get_vcpu(struct svm_softc *sc, int vcpu) 76 { 77 78 return (&(sc->vcpu[vcpu])); 79 } 80 81 static __inline struct vmcb * 82 svm_get_vmcb(struct svm_softc *sc, int vcpu) 83 { 84 85 return (&(sc->vcpu[vcpu].vmcb)); 86 } 87 88 static __inline struct vmcb_state * 89 svm_get_vmcb_state(struct svm_softc *sc, int vcpu) 90 { 91 92 return (&(sc->vcpu[vcpu].vmcb.state)); 93 } 94 95 static __inline struct vmcb_ctrl * 96 svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu) 97 { 98 99 return (&(sc->vcpu[vcpu].vmcb.ctrl)); 100 } 101 102 static __inline struct svm_regctx * 103 svm_get_guest_regctx(struct svm_softc *sc, int vcpu) 104 { 105 106 return (&(sc->vcpu[vcpu].swctx)); 107 } 108 109 static __inline void 110 svm_set_dirty(struct svm_softc *sc, int vcpu, uint32_t dirtybits) 111 { 112 struct svm_vcpu *vcpustate; 113 114 vcpustate = svm_get_vcpu(sc, vcpu); 115 116 vcpustate->dirty |= dirtybits; 117 } 118 119 #endif /* _SVM_SOFTC_H_ */ 120