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36#include <drm/drmP.h>
37#include <drm/drm_core.h>
38
39#include <linux/pci.h>
40#include <linux/export.h>
41
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44
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51
52
53int drm_getunique(struct drm_device *dev, void *data,
54 struct drm_file *file_priv)
55{
56 struct drm_unique *u = data;
57 struct drm_master *master = file_priv->master;
58
59 if (u->unique_len >= master->unique_len) {
60 if (copy_to_user(u->unique, master->unique, master->unique_len))
61 return -EFAULT;
62 }
63 u->unique_len = master->unique_len;
64
65 return 0;
66}
67
68static void
69drm_unset_busid(struct drm_device *dev,
70 struct drm_master *master)
71{
72 kfree(dev->devname);
73 dev->devname = NULL;
74
75 kfree(master->unique);
76 master->unique = NULL;
77 master->unique_len = 0;
78 master->unique_size = 0;
79}
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94
95int drm_setunique(struct drm_device *dev, void *data,
96 struct drm_file *file_priv)
97{
98 struct drm_unique *u = data;
99 struct drm_master *master = file_priv->master;
100 int ret;
101
102 if (master->unique_len || master->unique)
103 return -EBUSY;
104
105 if (!u->unique_len || u->unique_len > 1024)
106 return -EINVAL;
107
108 if (!dev->driver->bus->set_unique)
109 return -EINVAL;
110
111 ret = dev->driver->bus->set_unique(dev, master, u);
112 if (ret)
113 goto err;
114
115 return 0;
116
117err:
118 drm_unset_busid(dev, master);
119 return ret;
120}
121
122static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
123{
124 struct drm_master *master = file_priv->master;
125 int ret;
126
127 if (master->unique != NULL)
128 drm_unset_busid(dev, master);
129
130 ret = dev->driver->bus->set_busid(dev, master);
131 if (ret)
132 goto err;
133 return 0;
134err:
135 drm_unset_busid(dev, master);
136 return ret;
137}
138
139
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150
151
152int drm_getmap(struct drm_device *dev, void *data,
153 struct drm_file *file_priv)
154{
155 struct drm_map *map = data;
156 struct drm_map_list *r_list = NULL;
157 struct list_head *list;
158 int idx;
159 int i;
160
161 idx = map->offset;
162 if (idx < 0)
163 return -EINVAL;
164
165 i = 0;
166 mutex_lock(&dev->struct_mutex);
167 list_for_each(list, &dev->maplist) {
168 if (i == idx) {
169 r_list = list_entry(list, struct drm_map_list, head);
170 break;
171 }
172 i++;
173 }
174 if (!r_list || !r_list->map) {
175 mutex_unlock(&dev->struct_mutex);
176 return -EINVAL;
177 }
178
179 map->offset = r_list->map->offset;
180 map->size = r_list->map->size;
181 map->type = r_list->map->type;
182 map->flags = r_list->map->flags;
183 map->handle = (void *)(unsigned long) r_list->user_token;
184 map->mtrr = r_list->map->mtrr;
185 mutex_unlock(&dev->struct_mutex);
186
187 return 0;
188}
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202
203int drm_getclient(struct drm_device *dev, void *data,
204 struct drm_file *file_priv)
205{
206 struct drm_client *client = data;
207 struct drm_file *pt;
208 int idx;
209 int i;
210
211 idx = client->idx;
212 i = 0;
213
214 mutex_lock(&dev->struct_mutex);
215 list_for_each_entry(pt, &dev->filelist, lhead) {
216 if (i++ >= idx) {
217 client->auth = pt->authenticated;
218 client->pid = pid_vnr(pt->pid);
219 client->uid = from_kuid_munged(current_user_ns(), pt->uid);
220 client->magic = pt->magic;
221 client->iocs = pt->ioctl_count;
222 mutex_unlock(&dev->struct_mutex);
223
224 return 0;
225 }
226 }
227 mutex_unlock(&dev->struct_mutex);
228
229 return -EINVAL;
230}
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241
242int drm_getstats(struct drm_device *dev, void *data,
243 struct drm_file *file_priv)
244{
245 struct drm_stats *stats = data;
246 int i;
247
248 memset(stats, 0, sizeof(*stats));
249
250 for (i = 0; i < dev->counters; i++) {
251 if (dev->types[i] == _DRM_STAT_LOCK)
252 stats->data[i].value =
253 (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0);
254 else
255 stats->data[i].value = atomic_read(&dev->counts[i]);
256 stats->data[i].type = dev->types[i];
257 }
258
259 stats->count = dev->counters;
260
261 return 0;
262}
263
264
265
266
267int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
268{
269 struct drm_get_cap *req = data;
270
271 req->value = 0;
272 switch (req->capability) {
273 case DRM_CAP_DUMB_BUFFER:
274 if (dev->driver->dumb_create)
275 req->value = 1;
276 break;
277 case DRM_CAP_VBLANK_HIGH_CRTC:
278 req->value = 1;
279 break;
280 case DRM_CAP_DUMB_PREFERRED_DEPTH:
281 req->value = dev->mode_config.preferred_depth;
282 break;
283 case DRM_CAP_DUMB_PREFER_SHADOW:
284 req->value = dev->mode_config.prefer_shadow;
285 break;
286 case DRM_CAP_PRIME:
287 req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0;
288 req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0;
289 break;
290 case DRM_CAP_TIMESTAMP_MONOTONIC:
291 req->value = drm_timestamp_monotonic;
292 break;
293 default:
294 return -EINVAL;
295 }
296 return 0;
297}
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309
310int drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_priv)
311{
312 struct drm_set_version *sv = data;
313 int if_version, retcode = 0;
314
315 if (sv->drm_di_major != -1) {
316 if (sv->drm_di_major != DRM_IF_MAJOR ||
317 sv->drm_di_minor < 0 || sv->drm_di_minor > DRM_IF_MINOR) {
318 retcode = -EINVAL;
319 goto done;
320 }
321 if_version = DRM_IF_VERSION(sv->drm_di_major,
322 sv->drm_di_minor);
323 dev->if_version = max(if_version, dev->if_version);
324 if (sv->drm_di_minor >= 1) {
325
326
327
328
329 retcode = drm_set_busid(dev, file_priv);
330 if (retcode)
331 goto done;
332 }
333 }
334
335 if (sv->drm_dd_major != -1) {
336 if (sv->drm_dd_major != dev->driver->major ||
337 sv->drm_dd_minor < 0 || sv->drm_dd_minor >
338 dev->driver->minor) {
339 retcode = -EINVAL;
340 goto done;
341 }
342
343 if (dev->driver->set_version)
344 dev->driver->set_version(dev, sv);
345 }
346
347done:
348 sv->drm_di_major = DRM_IF_MAJOR;
349 sv->drm_di_minor = DRM_IF_MINOR;
350 sv->drm_dd_major = dev->driver->major;
351 sv->drm_dd_minor = dev->driver->minor;
352
353 return retcode;
354}
355
356
357int drm_noop(struct drm_device *dev, void *data,
358 struct drm_file *file_priv)
359{
360 DRM_DEBUG("\n");
361 return 0;
362}
363EXPORT_SYMBOL(drm_noop);
364