svm_softc.h revision 249967 
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 249967 2013-04-27 04:49:51Z 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
35/*
36 * svm_vpcu contains SVM VMCB state and vcpu register state.
37 */
38struct svm_vcpu {
39	struct vmcb	 vmcb;	  /* hardware saved vcpu context */
40	struct svm_regctx swctx;  /* software saved vcpu context */
41	uint64_t	 vmcb_pa; /* VMCB physical address */
42	uint64_t	 loop;	  /* loop count for vcpu */
43        int		 lastcpu; /* host cpu that the vcpu last ran on */
44} __aligned(PAGE_SIZE);
45
46/*
47 * SVM softc, one per virtual machine.
48 */
49struct svm_softc {
50	/*
51	 * IO permission map, VMCB.ctrl.iopm_base_pa should point to this.
52	 * If a bit is set, access to I/O port is intercepted.
53	 */
54	uint8_t iopm_bitmap[SVM_IO_BITMAP_SIZE];
55
56	/*
57	 * MSR permission bitmap, VMCB.ctrl.msrpm_base_pa should point to this.
58	 * Two bits are used for each MSR with the LSB used for read access
59	 * and the MSB used for write access. A value of '1' indicates that
60	 * the operation is intercepted.
61	 */
62	uint8_t	msr_bitmap[SVM_MSR_BITMAP_SIZE];
63
64	/* Nested Paging */
65	pml4_entry_t	np_pml4[NPML4EPG];
66
67	/* Virtual machine pointer. */
68	struct vm	*vm;
69
70	/* Guest VCPU h/w and s/w context. */
71	struct svm_vcpu vcpu[VM_MAXCPU];
72
73	uint32_t	svm_feature;	/* SVM features from CPUID.*/
74
75	int		asid;		/* Guest Address Space Identifier */
76	int 		vcpu_cnt;	/* number of VCPUs for this guest.*/
77} __aligned(PAGE_SIZE);
78
79CTASSERT((offsetof(struct svm_softc, np_pml4) & PAGE_MASK) == 0);
80
81static __inline struct svm_vcpu *
82svm_get_vcpu(struct svm_softc *sc, int vcpu)
83{
84
85	return (&(sc->vcpu[vcpu]));
86}
87
88static __inline struct vmcb *
89svm_get_vmcb(struct svm_softc *sc, int vcpu)
90{
91
92	return (&(sc->vcpu[vcpu].vmcb));
93}
94
95static __inline struct vmcb_state *
96svm_get_vmcb_state(struct svm_softc *sc, int vcpu)
97{
98
99	return (&(sc->vcpu[vcpu].vmcb.state));
100}
101
102static __inline struct vmcb_ctrl *
103svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu)
104{
105
106	return (&(sc->vcpu[vcpu].vmcb.ctrl));
107}
108
109static __inline struct svm_regctx *
110svm_get_guest_regctx(struct svm_softc *sc, int vcpu)
111{
112
113	return (&(sc->vcpu[vcpu].swctx));
114}
115
116void svm_dump_vmcb(struct svm_softc *svm_sc, int vcpu);
117#endif /* _SVM_SOFTC_H_ */
118