1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/* $OpenBSD: pvbus.c,v 1.5 2015/07/29 17:08:46 mikeb Exp $ */
/*
* Copyright (c) 2015 Reyk Floeter <reyk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#if !defined(__i386__) && !defined(__amd64__)
#error pvbus(4) is currently only supported on i386 and amd64
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/timeout.h>
#include <sys/signalvar.h>
#include <sys/syslog.h>
#include <sys/proc.h>
#include <sys/socket.h>
#include <machine/specialreg.h>
#include <dev/rndvar.h>
#include <dev/pv/pvvar.h>
#include <dev/pv/pvreg.h>
#include "vmt.h"
int has_hv_cpuid = 0;
extern void rdrand(void *);
int pvbus_activate(struct device *, int);
int pvbus_match(struct device *, void *, void *);
void pvbus_attach(struct device *, struct device *, void *);
int pvbus_print(void *, const char *);
int pvbus_search(struct device *, void *, void *);
void pvbus_kvm(struct pvbus_softc *, struct pvbus_hv *);
void pvbus_hyperv(struct pvbus_softc *, struct pvbus_hv *);
void pvbus_xen(struct pvbus_softc *, struct pvbus_hv *);
struct cfattach pvbus_ca = {
sizeof(struct pvbus_softc),
pvbus_match,
pvbus_attach,
NULL,
pvbus_activate
};
struct cfdriver pvbus_cd = {
NULL,
"pvbus",
DV_DULL
};
struct pvbus_type {
const char *signature;
const char *name;
void (*init)(struct pvbus_softc *, struct pvbus_hv *);
} pvbus_types[PVBUS_MAX] = {
{ "KVMKVMKVM\0\0\0", "KVM", pvbus_kvm },
{ "Microsoft Hv", "Hyper-V", pvbus_hyperv },
{ "VMwareVMware", "VMware", NULL },
{ "XenVMMXenVMM", "Xen", pvbus_xen },
{ "bhyve bhyve ", "bhyve", NULL }
};
int
pvbus_probe(void)
{
/* Must be set in identcpu */
if (!has_hv_cpuid)
return (0);
return (1);
}
int
pvbus_match(struct device *parent, void *match, void *aux)
{
const char **busname = (const char **)aux;
return (strcmp(*busname, pvbus_cd.cd_name) == 0);
}
void
pvbus_attach(struct device *parent, struct device *self, void *aux)
{
struct pvbus_softc *sc = (struct pvbus_softc *)self;
struct pvbus_hv *hv;
uint32_t reg0, base;
union {
uint32_t regs[3];
char str[CPUID_HV_SIGNATURE_STRLEN];
} r;
int i, cnt;
printf(":");
for (base = CPUID_HV_SIGNATURE_START, cnt = 0;
base < CPUID_HV_SIGNATURE_END;
base += CPUID_HV_SIGNATURE_STEP) {
CPUID(base, reg0, r.regs[0], r.regs[1], r.regs[2]);
for (i = 0; i < 4; i++) {
/*
* Check if first 4 chars are printable ASCII as
* minimal validity check
*/
if (r.str[i] < 32 || r.str[i] > 126)
goto out;
}
for (i = 0; i < PVBUS_MAX; i++) {
if (memcmp(pvbus_types[i].signature, r.str,
CPUID_HV_SIGNATURE_STRLEN) != 0)
continue;
hv = &sc->pvbus_hv[i];
hv->hv_base = base;
if (cnt++)
printf(",");
printf(" %s", pvbus_types[i].name);
if (pvbus_types[i].init != NULL)
(pvbus_types[i].init)(sc, hv);
}
}
out:
printf("\n");
config_search(pvbus_search, self, sc);
}
int
pvbus_activate(struct device *self, int act)
{
int rv = 0;
switch (act) {
case DVACT_SUSPEND:
rv = config_activate_children(self, act);
break;
case DVACT_RESUME:
rv = config_activate_children(self, act);
break;
case DVACT_POWERDOWN:
rv = config_activate_children(self, act);
break;
default:
rv = config_activate_children(self, act);
break;
}
return (rv);
}
int
pvbus_search(struct device *parent, void *arg, void *aux)
{
struct pvbus_softc *sc = (struct pvbus_softc *)aux;
struct cfdata *cf = arg;
struct pv_attach_args pva;
pva.pva_busname = cf->cf_driver->cd_name;
pva.pva_hv = sc->pvbus_hv;
if (cf->cf_attach->ca_match(parent, cf, &pva) > 0)
config_attach(parent, cf, &pva, pvbus_print);
return (0);
}
int
pvbus_print(void *aux, const char *pnp)
{
struct pv_attach_args *pva = aux;
if (pnp)
printf("%s at %s", pva->pva_busname, pnp);
return (UNCONF);
}
void
pvbus_kvm(struct pvbus_softc *sc, struct pvbus_hv *hv)
{
uint32_t regs[4];
CPUID(hv->hv_base + CPUID_OFFSET_KVM_FEATURES,
regs[0], regs[1], regs[2], regs[3]);
hv->hv_features = regs[0];
}
void
pvbus_hyperv(struct pvbus_softc *sc, struct pvbus_hv *hv)
{
uint32_t regs[4];
CPUID(hv->hv_base + CPUID_OFFSET_HYPERV_FEATURES,
regs[0], regs[1], regs[2], regs[3]);
hv->hv_features = regs[0];
CPUID(hv->hv_base + CPUID_OFFSET_HYPERV_VERSION,
regs[0], regs[1], regs[2], regs[3]);
hv->hv_version = regs[1];
printf(" %u.%u.%u",
(regs[1] & HYPERV_VERSION_EBX_MAJOR_M) >>
HYPERV_VERSION_EBX_MAJOR_S,
(regs[1] & HYPERV_VERSION_EBX_MINOR_M) >>
HYPERV_VERSION_EBX_MINOR_S,
regs[0]);
}
void
pvbus_xen(struct pvbus_softc *sc, struct pvbus_hv *hv)
{
uint32_t regs[4];
CPUID(hv->hv_base + CPUID_OFFSET_XEN_VERSION,
regs[0], regs[1], regs[2], regs[3]);
hv->hv_version = regs[0];
printf(" %u.%u", regs[0] >> XEN_VERSION_MAJOR_S,
regs[0] & XEN_VERSION_MINOR_M);
}
|
