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
|
/*
* Copyright (C) 2006-2017 Oracle Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "vbox_drv.h"
#include "vbox_err.h"
#include "vboxvideo_guest.h"
#include "vboxvideo_vbe.h"
#include "hgsmi_channels.h"
#include "hgsmi_ch_setup.h"
/**
* Inform the host of the location of the host flags in VRAM via an HGSMI cmd.
* @param ctx the context of the guest heap to use.
* @param location the offset chosen for the flags within guest VRAM.
* @returns 0 on success, -errno on failure
*/
int hgsmi_report_flags_location(struct gen_pool *ctx, u32 location)
{
struct hgsmi_buffer_location *p;
p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_HGSMI,
HGSMI_CC_HOST_FLAGS_LOCATION);
if (!p)
return -ENOMEM;
p->buf_location = location;
p->buf_len = sizeof(struct hgsmi_host_flags);
hgsmi_buffer_submit(ctx, p);
hgsmi_buffer_free(ctx, p);
return 0;
}
/**
* Notify the host of HGSMI-related guest capabilities via an HGSMI command.
* @param ctx the context of the guest heap to use.
* @param caps the capabilities to report, see vbva_caps.
* @returns 0 on success, -errno on failure
*/
int hgsmi_send_caps_info(struct gen_pool *ctx, u32 caps)
{
struct vbva_caps *p;
p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA, VBVA_INFO_CAPS);
if (!p)
return -ENOMEM;
p->rc = VERR_NOT_IMPLEMENTED;
p->caps = caps;
hgsmi_buffer_submit(ctx, p);
WARN_ON_ONCE(RT_FAILURE(p->rc));
hgsmi_buffer_free(ctx, p);
return 0;
}
int hgsmi_test_query_conf(struct gen_pool *ctx)
{
u32 value = 0;
int ret;
ret = hgsmi_query_conf(ctx, U32_MAX, &value);
if (ret)
return ret;
return value == U32_MAX ? 0 : -EIO;
}
/**
* Query the host for an HGSMI configuration parameter via an HGSMI command.
* @param ctx the context containing the heap used
* @param index the index of the parameter to query,
* @see vbva_conf32::index
* @param value_ret where to store the value of the parameter on success
* @returns 0 on success, -errno on failure
*/
int hgsmi_query_conf(struct gen_pool *ctx, u32 index, u32 *value_ret)
{
struct vbva_conf32 *p;
p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
VBVA_QUERY_CONF32);
if (!p)
return -ENOMEM;
p->index = index;
p->value = U32_MAX;
hgsmi_buffer_submit(ctx, p);
*value_ret = p->value;
hgsmi_buffer_free(ctx, p);
return 0;
}
/**
* Pass the host a new mouse pointer shape via an HGSMI command.
*
* @param ctx the context containing the heap to be used
* @param flags cursor flags, @see VMMDevReqMousePointer::flags
* @param hot_x horizontal position of the hot spot
* @param hot_y vertical position of the hot spot
* @param width width in pixels of the cursor
* @param height height in pixels of the cursor
* @param pixels pixel data, @see VMMDevReqMousePointer for the format
* @param len size in bytes of the pixel data
* @returns 0 on success, -errno on failure
*/
int hgsmi_update_pointer_shape(struct gen_pool *ctx, u32 flags,
u32 hot_x, u32 hot_y, u32 width, u32 height,
u8 *pixels, u32 len)
{
struct vbva_mouse_pointer_shape *p;
u32 pixel_len = 0;
int rc;
if (flags & VBOX_MOUSE_POINTER_SHAPE) {
/*
* Size of the pointer data:
* sizeof (AND mask) + sizeof (XOR_MASK)
*/
pixel_len = ((((width + 7) / 8) * height + 3) & ~3) +
width * 4 * height;
if (pixel_len > len)
return -EINVAL;
/*
* If shape is supplied, then always create the pointer visible.
* See comments in 'vboxUpdatePointerShape'
*/
flags |= VBOX_MOUSE_POINTER_VISIBLE;
}
p = hgsmi_buffer_alloc(ctx, sizeof(*p) + pixel_len, HGSMI_CH_VBVA,
VBVA_MOUSE_POINTER_SHAPE);
if (!p)
return -ENOMEM;
p->result = VINF_SUCCESS;
p->flags = flags;
p->hot_X = hot_x;
p->hot_y = hot_y;
p->width = width;
p->height = height;
if (pixel_len)
memcpy(p->data, pixels, pixel_len);
hgsmi_buffer_submit(ctx, p);
switch (p->result) {
case VINF_SUCCESS:
rc = 0;
break;
case VERR_NO_MEMORY:
rc = -ENOMEM;
break;
case VERR_NOT_SUPPORTED:
rc = -EBUSY;
break;
default:
rc = -EINVAL;
}
hgsmi_buffer_free(ctx, p);
return rc;
}
/**
* Report the guest cursor position. The host may wish to use this information
* to re-position its own cursor (though this is currently unlikely). The
* current host cursor position is returned.
* @param ctx The context containing the heap used.
* @param report_position Are we reporting a position?
* @param x Guest cursor X position.
* @param y Guest cursor Y position.
* @param x_host Host cursor X position is stored here. Optional.
* @param y_host Host cursor Y position is stored here. Optional.
* @returns 0 on success, -errno on failure
*/
int hgsmi_cursor_position(struct gen_pool *ctx, bool report_position,
u32 x, u32 y, u32 *x_host, u32 *y_host)
{
struct vbva_cursor_position *p;
p = hgsmi_buffer_alloc(ctx, sizeof(*p), HGSMI_CH_VBVA,
VBVA_CURSOR_POSITION);
if (!p)
return -ENOMEM;
p->report_position = report_position;
p->x = x;
p->y = y;
hgsmi_buffer_submit(ctx, p);
*x_host = p->x;
*y_host = p->y;
hgsmi_buffer_free(ctx, p);
return 0;
}
/**
* @todo Mouse pointer position to be read from VMMDev memory, address of the
* memory region can be queried from VMMDev via an IOCTL. This VMMDev memory
* region will contain host information which is needed by the guest.
*
* Reading will not cause a switch to the host.
*
* Have to take into account:
* * synchronization: host must write to the memory only from EMT,
* large structures must be read under flag, which tells the host
* that the guest is currently reading the memory (OWNER flag?).
* * guest writes: may be allocate a page for the host info and make
* the page readonly for the guest.
* * the information should be available only for additions drivers.
* * VMMDev additions driver will inform the host which version of the info
* it expects, host must support all versions.
*/
|
