1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
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
29 #ifndef _SVM_SOFTC_H_
30 #define _SVM_SOFTC_H_
31
32 #include "x86.h"
33
34 #define SVM_IO_BITMAP_SIZE (3 * PAGE_SIZE)
35 #define SVM_MSR_BITMAP_SIZE (2 * PAGE_SIZE)
36
37 struct svm_softc;
38
39 struct dbg {
40 uint32_t rflags_tf; /* saved RFLAGS.TF value when single-stepping a vcpu */
41 bool popf_sstep; /* indicates that we've stepped over popf */
42 bool pushf_sstep; /* indicates that we've stepped over pushf */
43 };
44
45 struct asid {
46 uint64_t gen; /* range is [1, ~0UL] */
47 uint32_t num; /* range is [1, nasid - 1] */
48 };
49
50 struct svm_vcpu {
51 struct svm_softc *sc;
52 struct vcpu *vcpu;
53 struct vmcb *vmcb; /* hardware saved vcpu context */
54 struct svm_regctx swctx; /* software saved vcpu context */
55 uint64_t vmcb_pa; /* VMCB physical address */
56 uint64_t nextrip; /* next instruction to be executed by guest */
57 int lastcpu; /* host cpu that the vcpu last ran on */
58 uint32_t dirty; /* state cache bits that must be cleared */
59 long eptgen; /* pmap->pm_eptgen when the vcpu last ran */
60 struct asid asid;
61 struct vm_mtrr mtrr;
62 int vcpuid;
63 struct dbg dbg;
64 int caps; /* optional vm capabilities */
65 };
66
67 /*
68 * SVM softc, one per virtual machine.
69 */
70 struct svm_softc {
71 vm_paddr_t nptp; /* nested page table */
72 uint8_t *iopm_bitmap; /* shared by all vcpus */
73 uint8_t *msr_bitmap; /* shared by all vcpus */
74 struct vm *vm;
75 };
76
77 #define SVM_CTR0(vcpu, format) \
78 VCPU_CTR0((vcpu)->sc->vm, (vcpu)->vcpuid, format)
79
80 #define SVM_CTR1(vcpu, format, p1) \
81 VCPU_CTR1((vcpu)->sc->vm, (vcpu)->vcpuid, format, p1)
82
83 #define SVM_CTR2(vcpu, format, p1, p2) \
84 VCPU_CTR2((vcpu)->sc->vm, (vcpu)->vcpuid, format, p1, p2)
85
86 #define SVM_CTR3(vcpu, format, p1, p2, p3) \
87 VCPU_CTR3((vcpu)->sc->vm, (vcpu)->vcpuid, format, p1, p2, p3)
88
89 #define SVM_CTR4(vcpu, format, p1, p2, p3, p4) \
90 VCPU_CTR4((vcpu)->sc->vm, (vcpu)->vcpuid, format, p1, p2, p3, p4)
91
92 static __inline struct vmcb *
svm_get_vmcb(struct svm_vcpu * vcpu)93 svm_get_vmcb(struct svm_vcpu *vcpu)
94 {
95
96 return (vcpu->vmcb);
97 }
98
99 static __inline struct vmcb_state *
svm_get_vmcb_state(struct svm_vcpu * vcpu)100 svm_get_vmcb_state(struct svm_vcpu *vcpu)
101 {
102
103 return (&vcpu->vmcb->state);
104 }
105
106 static __inline struct vmcb_ctrl *
svm_get_vmcb_ctrl(struct svm_vcpu * vcpu)107 svm_get_vmcb_ctrl(struct svm_vcpu *vcpu)
108 {
109
110 return (&vcpu->vmcb->ctrl);
111 }
112
113 static __inline struct svm_regctx *
svm_get_guest_regctx(struct svm_vcpu * vcpu)114 svm_get_guest_regctx(struct svm_vcpu *vcpu)
115 {
116
117 return (&vcpu->swctx);
118 }
119
120 static __inline void
svm_set_dirty(struct svm_vcpu * vcpu,uint32_t dirtybits)121 svm_set_dirty(struct svm_vcpu *vcpu, uint32_t dirtybits)
122 {
123
124 vcpu->dirty |= dirtybits;
125 }
126
127 #endif /* _SVM_SOFTC_H_ */
128