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 #define SVM_IO_BITMAP_SIZE (3 * PAGE_SIZE)
33 #define SVM_MSR_BITMAP_SIZE (2 * PAGE_SIZE)
34
35 #include <sys/hma.h>
36
37 /* This must match HOST_MSR_NUM in svm_msr.c (where it is CTASSERTed) */
38 #define SVM_HOST_MSR_NUM 4
39
40 /*
41 * XXX separate out 'struct vmcb' from 'svm_vcpu' to avoid wasting space
42 * due to VMCB alignment requirements.
43 */
44 struct svm_vcpu {
45 struct vmcb vmcb; /* hardware saved vcpu context */
46 struct svm_regctx swctx; /* software saved vcpu context */
47 uint64_t vmcb_pa; /* VMCB physical address */
48 uint64_t nextrip; /* next instruction to be executed by guest */
49 int lastcpu; /* host cpu that the vcpu last ran on */
50 uint32_t dirty; /* state cache bits that must be cleared */
51 uint64_t nptgen; /* page table gen when the vcpu last ran */
52 hma_svm_asid_t hma_asid;
53 boolean_t loaded;
54 } __aligned(PAGE_SIZE);
55
56 /*
57 * SVM softc, one per virtual machine.
58 */
59 struct svm_softc {
60 uint8_t apic_page[VM_MAXCPU][PAGE_SIZE];
61 struct svm_vcpu vcpu[VM_MAXCPU];
62 uint64_t nptp; /* nested page table (host PA) */
63 uint8_t *iopm_bitmap; /* shared by all vcpus */
64 uint8_t *msr_bitmap; /* shared by all vcpus */
65 struct vm *vm;
66 uint64_t host_msrs[VM_MAXCPU][SVM_HOST_MSR_NUM];
67 };
68
69 CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0);
70
71 static __inline struct svm_vcpu *
svm_get_vcpu(struct svm_softc * sc,int 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 *
svm_get_vmcb(struct svm_softc * sc,int vcpu)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 *
svm_get_vmcb_state(struct svm_softc * sc,int vcpu)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 *
svm_get_vmcb_ctrl(struct svm_softc * sc,int vcpu)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 *
svm_get_guest_regctx(struct svm_softc * sc,int vcpu)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
svm_set_dirty(struct svm_softc * sc,int vcpu,uint32_t dirtybits)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 vcpustate->dirty |= dirtybits;
113 }
114
115 #endif /* _SVM_SOFTC_H_ */
116