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a09e091a JB |
1 | #ifdef HAVE_XORG_CONFIG_H |
2 | #include <xorg-config.h> | |
3 | #endif | |
4 | ||
5 | #ifdef XSERVER_PLATFORM_BUS | |
6 | ||
7 | #include <xf86drm.h> | |
8 | #include <fcntl.h> | |
9 | #include <unistd.h> | |
10 | #include <errno.h> | |
11 | #include <string.h> | |
12 | ||
13 | /* Linux platform device support */ | |
14 | #include "xf86_OSproc.h" | |
15 | ||
16 | #include "xf86.h" | |
17 | #include "xf86platformBus.h" | |
18 | #include "xf86Bus.h" | |
19 | ||
20 | #include "hotplug.h" | |
21 | ||
22 | static Bool | |
23 | get_drm_info(struct OdevAttributes *attribs, char *path, int delayed_index) | |
24 | { | |
25 | drmSetVersion sv; | |
26 | char *buf; | |
27 | int fd; | |
28 | int err = 0; | |
29 | ||
30 | fd = open(path, O_RDWR, O_CLOEXEC); | |
31 | if (fd == -1) | |
32 | return FALSE; | |
33 | ||
34 | sv.drm_di_major = 1; | |
35 | sv.drm_di_minor = 4; | |
36 | sv.drm_dd_major = -1; /* Don't care */ | |
37 | sv.drm_dd_minor = -1; /* Don't care */ | |
38 | ||
39 | err = drmSetInterfaceVersion(fd, &sv); | |
40 | if (err) { | |
41 | ErrorF("setversion 1.4 failed: %s\n", strerror(-err)); | |
42 | goto out; | |
43 | } | |
44 | ||
45 | /* for a delayed probe we've already added the device */ | |
46 | if (delayed_index == -1) { | |
47 | xf86_add_platform_device(attribs); | |
48 | delayed_index = xf86_num_platform_devices - 1; | |
49 | } | |
50 | ||
51 | buf = drmGetBusid(fd); | |
52 | xf86_add_platform_device_attrib(delayed_index, | |
53 | ODEV_ATTRIB_BUSID, buf); | |
54 | drmFreeBusid(buf); | |
55 | out: | |
56 | close(fd); | |
57 | return (err == 0); | |
58 | } | |
59 | ||
60 | Bool | |
61 | xf86PlatformDeviceCheckBusID(struct xf86_platform_device *device, const char *busid) | |
62 | { | |
63 | struct OdevAttribute *attrib; | |
64 | const char *syspath = NULL; | |
65 | BusType bustype; | |
66 | const char *id; | |
67 | xorg_list_for_each_entry(attrib, &device->attribs->list, member) { | |
68 | if (attrib->attrib_id == ODEV_ATTRIB_SYSPATH) { | |
69 | syspath = attrib->attrib_name; | |
70 | break; | |
71 | } | |
72 | } | |
73 | ||
74 | if (!syspath) | |
75 | return FALSE; | |
76 | ||
77 | bustype = StringToBusType(busid, &id); | |
78 | if (bustype == BUS_PCI) { | |
79 | struct pci_device *pPci = device->pdev; | |
80 | if (xf86ComparePciBusString(busid, | |
81 | ((pPci->domain << 8) | |
82 | | pPci->bus), | |
83 | pPci->dev, pPci->func)) { | |
84 | return TRUE; | |
85 | } | |
86 | } | |
87 | else if (bustype == BUS_PLATFORM) { | |
88 | /* match on the minimum string */ | |
89 | int len = strlen(id); | |
90 | ||
91 | if (strlen(syspath) < strlen(id)) | |
92 | len = strlen(syspath); | |
93 | ||
94 | if (strncmp(id, syspath, len)) | |
95 | return FALSE; | |
96 | return TRUE; | |
97 | } | |
98 | return FALSE; | |
99 | } | |
100 | ||
101 | void | |
102 | xf86PlatformReprobeDevice(int index, struct OdevAttributes *attribs) | |
103 | { | |
104 | Bool ret; | |
105 | char *dpath; | |
106 | dpath = xf86_get_platform_attrib(index, ODEV_ATTRIB_PATH); | |
107 | ||
108 | ret = get_drm_info(attribs, dpath, index); | |
109 | if (ret == FALSE) { | |
110 | xf86_remove_platform_device(index); | |
111 | return; | |
112 | } | |
113 | ret = xf86platformAddDevice(index); | |
114 | if (ret == -1) | |
115 | xf86_remove_platform_device(index); | |
116 | } | |
117 | ||
118 | void | |
119 | xf86PlatformDeviceProbe(struct OdevAttributes *attribs) | |
120 | { | |
121 | struct OdevAttribute *attrib; | |
122 | int i; | |
123 | char *path = NULL; | |
124 | Bool ret; | |
125 | ||
126 | xorg_list_for_each_entry(attrib, &attribs->list, member) { | |
127 | if (attrib->attrib_id == ODEV_ATTRIB_PATH) { | |
128 | path = attrib->attrib_name; | |
129 | break; | |
130 | } | |
131 | } | |
132 | if (!path) | |
133 | goto out_free; | |
134 | ||
135 | for (i = 0; i < xf86_num_platform_devices; i++) { | |
136 | char *dpath; | |
137 | dpath = xf86_get_platform_attrib(i, ODEV_ATTRIB_PATH); | |
138 | ||
139 | if (!strcmp(path, dpath)) | |
140 | break; | |
141 | } | |
142 | ||
143 | if (i != xf86_num_platform_devices) | |
144 | goto out_free; | |
145 | ||
146 | LogMessage(X_INFO, "xfree86: Adding drm device (%s)\n", path); | |
147 | ||
148 | if (!xf86VTOwner()) { | |
149 | /* if we don't currently own the VT then don't probe the device, | |
150 | just mark it as unowned for later use */ | |
151 | attribs->unowned = TRUE; | |
152 | xf86_add_platform_device(attribs); | |
153 | return; | |
154 | } | |
155 | ||
156 | ret = get_drm_info(attribs, path, -1); | |
157 | if (ret == FALSE) | |
158 | goto out_free; | |
159 | ||
160 | return; | |
161 | ||
162 | out_free: | |
163 | config_odev_free_attribute_list(attribs); | |
164 | } | |
165 | ||
166 | void NewGPUDeviceRequest(struct OdevAttributes *attribs) | |
167 | { | |
168 | int old_num = xf86_num_platform_devices; | |
169 | int ret; | |
170 | xf86PlatformDeviceProbe(attribs); | |
171 | ||
172 | if (old_num == xf86_num_platform_devices) | |
173 | return; | |
174 | ||
175 | if (xf86_get_platform_device_unowned(xf86_num_platform_devices - 1) == TRUE) | |
176 | return; | |
177 | ||
178 | ret = xf86platformAddDevice(xf86_num_platform_devices-1); | |
179 | if (ret == -1) | |
180 | xf86_remove_platform_device(xf86_num_platform_devices-1); | |
181 | ||
182 | ErrorF("xf86: found device %d\n", xf86_num_platform_devices); | |
183 | return; | |
184 | } | |
185 | ||
186 | void DeleteGPUDeviceRequest(struct OdevAttributes *attribs) | |
187 | { | |
188 | struct OdevAttribute *attrib; | |
189 | int index; | |
190 | char *syspath = NULL; | |
191 | ||
192 | xorg_list_for_each_entry(attrib, &attribs->list, member) { | |
193 | if (attrib->attrib_id == ODEV_ATTRIB_SYSPATH) { | |
194 | syspath = attrib->attrib_name; | |
195 | break; | |
196 | } | |
197 | } | |
198 | ||
199 | for (index = 0; index < xf86_num_platform_devices; index++) { | |
200 | char *dspath; | |
201 | dspath = xf86_get_platform_attrib(index, ODEV_ATTRIB_SYSPATH); | |
202 | if (!strcmp(syspath, dspath)) | |
203 | break; | |
204 | } | |
205 | ||
206 | if (index == xf86_num_platform_devices) | |
207 | goto out; | |
208 | ||
209 | ErrorF("xf86: remove device %d %s\n", index, syspath); | |
210 | ||
211 | if (xf86_get_platform_device_unowned(index) == TRUE) | |
212 | xf86_remove_platform_device(index); | |
213 | else | |
214 | xf86platformRemoveDevice(index); | |
215 | out: | |
216 | config_odev_free_attribute_list(attribs); | |
217 | } | |
218 | ||
219 | #endif |