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
|
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#ifdef XSERVER_PLATFORM_BUS
#include <xf86drm.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
/* Linux platform device support */
#include "xf86_OSproc.h"
#include "xf86.h"
#include "xf86platformBus.h"
#include "xf86Bus.h"
#include "hotplug.h"
#include "systemd-logind.h"
static Bool
get_drm_info(struct OdevAttributes *attribs, char *path, int delayed_index)
{
drmSetVersion sv;
char *buf;
int major, minor, fd;
int err = 0;
Bool paused, server_fd = FALSE;
major = config_odev_get_int_attribute(attribs, ODEV_ATTRIB_MAJOR, 0);
minor = config_odev_get_int_attribute(attribs, ODEV_ATTRIB_MINOR, 0);
fd = systemd_logind_take_fd(major, minor, path, &paused);
if (fd != -1) {
if (paused) {
LogMessage(X_ERROR,
"Error systemd-logind returned paused fd for drm node\n");
systemd_logind_release_fd(major, minor, -1);
return FALSE;
}
config_odev_add_int_attribute(attribs, ODEV_ATTRIB_FD, fd);
server_fd = TRUE;
}
if (fd == -1)
fd = open(path, O_RDWR, O_CLOEXEC);
if (fd == -1)
return FALSE;
sv.drm_di_major = 1;
sv.drm_di_minor = 4;
sv.drm_dd_major = -1; /* Don't care */
sv.drm_dd_minor = -1; /* Don't care */
err = drmSetInterfaceVersion(fd, &sv);
if (err) {
ErrorF("setversion 1.4 failed: %s\n", strerror(-err));
goto out;
}
/* for a delayed probe we've already added the device */
if (delayed_index == -1) {
xf86_add_platform_device(attribs, FALSE);
delayed_index = xf86_num_platform_devices - 1;
}
if (server_fd)
xf86_platform_devices[delayed_index].flags |= XF86_PDEV_SERVER_FD;
buf = drmGetBusid(fd);
xf86_add_platform_device_attrib(delayed_index,
ODEV_ATTRIB_BUSID, buf);
drmFreeBusid(buf);
out:
if (!server_fd)
close(fd);
return (err == 0);
}
Bool
xf86PlatformDeviceCheckBusID(struct xf86_platform_device *device, const char *busid)
{
struct OdevAttribute *attrib;
const char *syspath = NULL;
BusType bustype;
const char *id;
xorg_list_for_each_entry(attrib, &device->attribs->list, member) {
if (attrib->attrib_id == ODEV_ATTRIB_SYSPATH) {
syspath = attrib->attrib_name;
break;
}
}
if (!syspath)
return FALSE;
bustype = StringToBusType(busid, &id);
if (bustype == BUS_PCI) {
struct pci_device *pPci = device->pdev;
if (xf86ComparePciBusString(busid,
((pPci->domain << 8)
| pPci->bus),
pPci->dev, pPci->func)) {
return TRUE;
}
}
else if (bustype == BUS_PLATFORM) {
/* match on the minimum string */
int len = strlen(id);
if (strlen(syspath) < strlen(id))
len = strlen(syspath);
if (strncmp(id, syspath, len))
return FALSE;
return TRUE;
}
return FALSE;
}
void
xf86PlatformReprobeDevice(int index, struct OdevAttributes *attribs)
{
Bool ret;
char *dpath;
dpath = xf86_get_platform_attrib(index, ODEV_ATTRIB_PATH);
ret = get_drm_info(attribs, dpath, index);
if (ret == FALSE) {
xf86_remove_platform_device(index);
return;
}
ret = xf86platformAddDevice(index);
if (ret == -1)
xf86_remove_platform_device(index);
}
void
xf86PlatformDeviceProbe(struct OdevAttributes *attribs)
{
int i;
char *path = NULL;
Bool ret;
path = config_odev_get_attribute(attribs, ODEV_ATTRIB_PATH);
if (!path)
goto out_free;
for (i = 0; i < xf86_num_platform_devices; i++) {
char *dpath;
dpath = xf86_get_platform_attrib(i, ODEV_ATTRIB_PATH);
if (!strcmp(path, dpath))
break;
}
if (i != xf86_num_platform_devices)
goto out_free;
LogMessage(X_INFO, "xfree86: Adding drm device (%s)\n", path);
if (!xf86VTOwner()) {
/* if we don't currently own the VT then don't probe the device,
just mark it as unowned for later use */
xf86_add_platform_device(attribs, TRUE);
return;
}
ret = get_drm_info(attribs, path, -1);
if (ret == FALSE)
goto out_free;
return;
out_free:
config_odev_free_attribute_list(attribs);
}
void NewGPUDeviceRequest(struct OdevAttributes *attribs)
{
int old_num = xf86_num_platform_devices;
int ret;
xf86PlatformDeviceProbe(attribs);
if (old_num == xf86_num_platform_devices)
return;
if (xf86_get_platform_device_unowned(xf86_num_platform_devices - 1) == TRUE)
return;
ret = xf86platformAddDevice(xf86_num_platform_devices-1);
if (ret == -1)
xf86_remove_platform_device(xf86_num_platform_devices-1);
ErrorF("xf86: found device %d\n", xf86_num_platform_devices);
return;
}
void DeleteGPUDeviceRequest(struct OdevAttributes *attribs)
{
struct OdevAttribute *attrib;
int index;
char *syspath = NULL;
xorg_list_for_each_entry(attrib, &attribs->list, member) {
if (attrib->attrib_id == ODEV_ATTRIB_SYSPATH) {
syspath = attrib->attrib_name;
break;
}
}
for (index = 0; index < xf86_num_platform_devices; index++) {
char *dspath;
dspath = xf86_get_platform_attrib(index, ODEV_ATTRIB_SYSPATH);
if (!strcmp(syspath, dspath))
break;
}
if (index == xf86_num_platform_devices)
goto out;
ErrorF("xf86: remove device %d %s\n", index, syspath);
if (xf86_get_platform_device_unowned(index) == TRUE)
xf86_remove_platform_device(index);
else
xf86platformRemoveDevice(index);
out:
config_odev_free_attribute_list(attribs);
}
#endif
|
