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
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
/*********************************************************
* Copyright (C) 1999 VMware, Inc. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation version 2.1 and no later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the Lesser GNU General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
*********************************************************/
/*
* backdoor.c --
*
* First layer of the internal communication channel between guest
* applications and vmware
*
* This is the backdoor. By using special ports of the virtual I/O space,
* and the virtual CPU registers, a guest application can send a
* synchroneous basic request to vmware, and vmware can reply to it.
*/
#ifdef __cplusplus
extern "C" {
#endif
#if defined(__KERNEL__) || defined(_KERNEL)
#else
# include "debug.h"
#endif
#include "backdoor_def.h"
#include "backdoor.h"
#include "backdoorInt.h"
#if defined(BACKDOOR_DEBUG) && defined(USERLEVEL)
# include <stdio.h>
# define BACKDOOR_LOG(args) Debug args
# define BACKDOOR_LOG_PROTO_STRUCT(x) BackdoorPrintProtoStruct((x))
# define BACKDOOR_LOG_HB_PROTO_STRUCT(x) BackdoorPrintHbProtoStruct((x))
/*
*----------------------------------------------------------------------------
*
* BackdoorPrintProtoStruct --
* BackdoorPrintHbProtoStruct --
*
* Print the contents of the specified backdoor protocol structure via
* printf.
*
* Results:
* None.
*
* Side effects:
* Output to stdout.
*
*----------------------------------------------------------------------------
*/
void
BackdoorPrintProtoStruct(Backdoor_proto *myBp)
{
Debug("magic 0x%08x, command %d, size %"FMTSZ"u, port %d\n",
myBp->in.ax.word, myBp->in.cx.halfs.low,
myBp->in.size, myBp->in.dx.halfs.low);
#ifndef VM_X86_64
Debug("ax %#x, "
"bx %#x, "
"cx %#x, "
"dx %#x, "
"si %#x, "
"di %#x\n",
myBp->out.ax.word,
myBp->out.bx.word,
myBp->out.cx.word,
myBp->out.dx.word,
myBp->out.si.word,
myBp->out.di.word);
#else
Debug("ax %#"FMT64"x, "
"bx %#"FMT64"x, "
"cx %#"FMT64"x, "
"dx %#"FMT64"x, "
"si %#"FMT64"x, "
"di %#"FMT64"x\n",
myBp->out.ax.quad,
myBp->out.bx.quad,
myBp->out.cx.quad,
myBp->out.dx.quad,
myBp->out.si.quad,
myBp->out.di.quad);
#endif
}
void
BackdoorPrintHbProtoStruct(Backdoor_proto_hb *myBp)
{
Debug("magic 0x%08x, command %d, size %"FMTSZ"u, port %d, "
"srcAddr %"FMTSZ"u, dstAddr %"FMTSZ"u\n",
myBp->in.ax.word, myBp->in.bx.halfs.low, myBp->in.size,
myBp->in.dx.halfs.low, myBp->in.srcAddr, myBp->in.dstAddr);
#ifndef VM_X86_64
Debug("ax %#x, "
"bx %#x, "
"cx %#x, "
"dx %#x, "
"si %#x, "
"di %#x, "
"bp %#x\n",
myBp->out.ax.word,
myBp->out.bx.word,
myBp->out.cx.word,
myBp->out.dx.word,
myBp->out.si.word,
myBp->out.di.word,
myBp->out.bp.word);
#else
Debug("ax %#"FMT64"x, "
"bx %#"FMT64"x, "
"cx %#"FMT64"x, "
"dx %#"FMT64"x, "
"si %#"FMT64"x, "
"di %#"FMT64"x, "
"bp %#"FMT64"x\n",
myBp->out.ax.quad,
myBp->out.bx.quad,
myBp->out.cx.quad,
myBp->out.dx.quad,
myBp->out.si.quad,
myBp->out.di.quad,
myBp->out.bp.quad);
#endif
}
#else
# define BACKDOOR_LOG(args)
# define BACKDOOR_LOG_PROTO_STRUCT(x)
# define BACKDOOR_LOG_HB_PROTO_STRUCT(x)
#endif
/*
*-----------------------------------------------------------------------------
*
* Backdoor --
*
* Send a low-bandwidth basic request (16 bytes) to vmware, and return its
* reply (24 bytes).
*
* Result:
* None
*
* Side-effects:
* None
*
*-----------------------------------------------------------------------------
*/
void
Backdoor(Backdoor_proto *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOOR_PORT;
BACKDOOR_LOG(("Backdoor: before "));
BACKDOOR_LOG_PROTO_STRUCT(myBp);
Backdoor_InOut(myBp);
BACKDOOR_LOG(("Backdoor: after "));
BACKDOOR_LOG_PROTO_STRUCT(myBp);
}
/*
*-----------------------------------------------------------------------------
*
* Backdoor_HbOut --
*
* Send a high-bandwidth basic request to vmware, and return its
* reply.
*
* Result:
* The host-side response is returned via the IN/OUT parameter.
*
* Side-effects:
* Pokes the high-bandwidth backdoor.
*
*-----------------------------------------------------------------------------
*/
void
Backdoor_HbOut(Backdoor_proto_hb *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOORHB_PORT;
BACKDOOR_LOG(("Backdoor_HbOut: before "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
BackdoorHbOut(myBp);
BACKDOOR_LOG(("Backdoor_HbOut: after "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
}
/*
*-----------------------------------------------------------------------------
*
* Backdoor_HbIn --
*
* Send a basic request to vmware, and return its high-bandwidth
* reply
*
* Result:
* Host-side response returned via the IN/OUT parameter.
*
* Side-effects:
* Pokes the high-bandwidth backdoor.
*
*-----------------------------------------------------------------------------
*/
void
Backdoor_HbIn(Backdoor_proto_hb *myBp) // IN/OUT
{
ASSERT(myBp);
myBp->in.ax.word = BDOOR_MAGIC;
myBp->in.dx.halfs.low = BDOORHB_PORT;
BACKDOOR_LOG(("Backdoor_HbIn: before "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
BackdoorHbIn(myBp);
BACKDOOR_LOG(("Backdoor_HbIn: after "));
BACKDOOR_LOG_HB_PROTO_STRUCT(myBp);
}
#ifdef __cplusplus
}
#endif
|
