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