svm_softc.h revision 276403 
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: stable/10/sys/amd64/vmm/amd/svm_softc.h 276403 2014-12-30 08:24:14Z 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 * XXX separate out 'struct vmcb' from 'svm_vcpu' to avoid wasting space
42 * due to VMCB alignment requirements.
43 */
44struct 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        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	uint8_t iopm_bitmap[SVM_IO_BITMAP_SIZE];    /* shared by all vcpus */
59	uint8_t msr_bitmap[SVM_MSR_BITMAP_SIZE];    /* shared by all vcpus */
60	uint8_t apic_page[VM_MAXCPU][PAGE_SIZE];
61	struct svm_vcpu vcpu[VM_MAXCPU];
62	vm_offset_t 	nptp;			    /* nested page table */
63	struct vm	*vm;
64} __aligned(PAGE_SIZE);
65
66CTASSERT((offsetof(struct svm_softc, nptp) & PAGE_MASK) == 0);
67
68static __inline struct svm_vcpu *
69svm_get_vcpu(struct svm_softc *sc, int vcpu)
70{
71
72	return (&(sc->vcpu[vcpu]));
73}
74
75static __inline struct vmcb *
76svm_get_vmcb(struct svm_softc *sc, int vcpu)
77{
78
79	return (&(sc->vcpu[vcpu].vmcb));
80}
81
82static __inline struct vmcb_state *
83svm_get_vmcb_state(struct svm_softc *sc, int vcpu)
84{
85
86	return (&(sc->vcpu[vcpu].vmcb.state));
87}
88
89static __inline struct vmcb_ctrl *
90svm_get_vmcb_ctrl(struct svm_softc *sc, int vcpu)
91{
92
93	return (&(sc->vcpu[vcpu].vmcb.ctrl));
94}
95
96static __inline struct svm_regctx *
97svm_get_guest_regctx(struct svm_softc *sc, int vcpu)
98{
99
100	return (&(sc->vcpu[vcpu].swctx));
101}
102
103static __inline void
104svm_set_dirty(struct svm_softc *sc, int vcpu, uint32_t dirtybits)
105{
106        struct svm_vcpu *vcpustate;
107
108        vcpustate = svm_get_vcpu(sc, vcpu);
109
110        vcpustate->dirty |= dirtybits;
111}
112
113#endif /* _SVM_SOFTC_H_ */
114