svm_softc.h revision 271203 
1/*-
2 * Copyright (c) 2013 Anish Gupta (akgupt3@gmail.com)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice unmodified, this list of conditions, and the following
10 *    disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: projects/bhyve_svm/sys/amd64/vmm/amd/svm_softc.h 271203 2014-09-06 19:02:52Z neel $
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
35struct asid {
36	uint64_t	gen;	/* range is [1, ~0UL] */
37	uint32_t	num;	/* range is [1, nasid - 1] */
38};
39
40/*
41 * svm_vpcu contains SVM VMCB state and vcpu register state.
42 */
43struct svm_vcpu {
44	struct vmcb	vmcb;	 /* hardware saved vcpu context */
45	struct svm_regctx swctx; /* software saved vcpu context */
46	uint64_t	vmcb_pa; /* VMCB physical address */
47	uint64_t	loop;	 /* loop count for vcpu */
48        int		lastcpu; /* host cpu that the vcpu last ran on */
49	uint32_t	dirty;	 /* state cache bits that must be cleared */
50	long		eptgen;	 /* pmap->pm_eptgen when the vcpu last ran */
51	struct asid	asid;
52} __aligned(PAGE_SIZE);
53
54/*
55 * SVM softc, one per virtual machine.
56 */
57struct svm_softc {
58	/*
59	 * IO permission map, VMCB.ctrl.iopm_base_pa should point to this.
60	 * If a bit is set, access to I/O port is intercepted.
61	 */
62	uint8_t iopm_bitmap[SVM_IO_BITMAP_SIZE];
63
64	/*
65	 * MSR permission bitmap, VMCB.ctrl.msrpm_base_pa should point to this.
66	 * Two bits are used for each MSR with the LSB used for read access
67	 * and the MSB used for write access. A value of '1' indicates that
68	 * the operation is intercepted.
69	 */
70	uint8_t	msr_bitmap[SVM_MSR_BITMAP_SIZE];
71
72	uint8_t apic_page[VM_MAXCPU][PAGE_SIZE];
73	/* Nested Paging */
74	vm_offset_t 	nptp;
75
76	/* Virtual machine pointer. */
77	struct vm	*vm;
78
79	/* Guest VCPU h/w and s/w context. */
80	struct svm_vcpu vcpu[VM_MAXCPU];
81
82	uint32_t	svm_feature;	/* SVM features from CPUID.*/
83
84	int 		vcpu_cnt;	/* number of VCPUs for this guest.*/
85} __aligned(PAGE_SIZE);
86
87CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0);
88
89static __inline struct svm_vcpu *
90svm_get_vcpu(struct svm_softc *sc, int vcpu)
91{
92
93	return (&(sc->vcpu[vcpu]));
94}
95
96static __inline struct vmcb *
97svm_get_vmcb(struct svm_softc *sc, int vcpu)
98{
99
100	return (&(sc->vcpu[vcpu].vmcb));
101}
102
103static __inline struct vmcb_state *
104svm_get_vmcb_state(struct svm_softc *sc, int vcpu)
105{
106
107	return (&(sc->vcpu[vcpu].vmcb.state));
108}
109
110static __inline struct vmcb_ctrl *
111svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu)
112{
113
114	return (&(sc->vcpu[vcpu].vmcb.ctrl));
115}
116
117static __inline struct svm_regctx *
118svm_get_guest_regctx(struct svm_softc *sc, int vcpu)
119{
120
121	return (&(sc->vcpu[vcpu].swctx));
122}
123
124void svm_dump_vmcb(struct svm_softc *svm_sc, int vcpu);
125#endif /* _SVM_SOFTC_H_ */
126