3 * IOCTL processing for DRM
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
10 * Created: Fri Jan 8 09:01:26 1999 by faith@valinux.com
12 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
13 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
14 * All Rights Reserved.
16 * Permission is hereby granted, free of charge, to any person obtaining a
17 * copy of this software and associated documentation files (the "Software"),
18 * to deal in the Software without restriction, including without limitation
19 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
20 * and/or sell copies of the Software, and to permit persons to whom the
21 * Software is furnished to do so, subject to the following conditions:
23 * The above copyright notice and this permission notice (including the next
24 * paragraph) shall be included in all copies or substantial portions of the
27 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
28 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
29 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
30 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
31 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
32 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
33 * OTHER DEALINGS IN THE SOFTWARE.
36 #include <sys/cdefs.h>
37 #include <dev/drm2/drmP.h>
38 #include <dev/drm2/drm_core.h>
43 * \param inode device inode.
44 * \param file_priv DRM file private.
46 * \param arg user argument, pointing to a drm_unique structure.
47 * \return zero on success or a negative number on failure.
49 * Copies the bus id from drm_device::unique into user space.
51 int drm_getunique(struct drm_device *dev, void *data,
52 struct drm_file *file_priv)
54 struct drm_unique *u = data;
55 struct drm_master *master = file_priv->master;
57 if (u->unique_len >= master->unique_len) {
58 if (copy_to_user(u->unique, master->unique, master->unique_len))
61 u->unique_len = master->unique_len;
67 drm_unset_busid(struct drm_device *dev,
68 struct drm_master *master)
71 free(master->unique, DRM_MEM_DRIVER);
72 master->unique = NULL;
73 master->unique_len = 0;
74 master->unique_size = 0;
80 * \param inode device inode.
81 * \param file_priv DRM file private.
83 * \param arg user argument, pointing to a drm_unique structure.
84 * \return zero on success or a negative number on failure.
86 * Copies the bus id from userspace into drm_device::unique, and verifies that
87 * it matches the device this DRM is attached to (EINVAL otherwise). Deprecated
88 * in interface version 1.1 and will return EBUSY when setversion has requested
89 * version 1.1 or greater.
91 int drm_setunique(struct drm_device *dev, void *data,
92 struct drm_file *file_priv)
94 struct drm_unique *u = data;
95 struct drm_master *master = file_priv->master;
98 if (master->unique_len || master->unique)
101 if (!u->unique_len || u->unique_len > 1024)
104 if (!dev->driver->bus->set_unique)
107 ret = dev->driver->bus->set_unique(dev, master, u);
114 drm_unset_busid(dev, master);
118 static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv)
120 struct drm_master *master = file_priv->master;
123 if (master->unique != NULL)
124 drm_unset_busid(dev, master);
126 ret = dev->driver->bus->set_busid(dev, master);
131 drm_unset_busid(dev, master);
136 * Get a mapping information.
138 * \param inode device inode.
139 * \param file_priv DRM file private.
140 * \param cmd command.
141 * \param arg user argument, pointing to a drm_map structure.
143 * \return zero on success or a negative number on failure.
145 * Searches for the mapping with the specified offset and copies its information
148 int drm_getmap(struct drm_device *dev, void *data,
149 struct drm_file *file_priv)
151 struct drm_map *map = data;
152 struct drm_map_list *r_list = NULL;
153 struct list_head *list;
163 list_for_each(list, &dev->maplist) {
165 r_list = list_entry(list, struct drm_map_list, head);
170 if (!r_list || !r_list->map) {
175 map->offset = r_list->map->offset;
176 map->size = r_list->map->size;
177 map->type = r_list->map->type;
178 map->flags = r_list->map->flags;
179 map->handle = (void *)(unsigned long) r_list->user_token;
180 map->mtrr = r_list->map->mtrr;
187 * Get client information.
189 * \param inode device inode.
190 * \param file_priv DRM file private.
191 * \param cmd command.
192 * \param arg user argument, pointing to a drm_client structure.
194 * \return zero on success or a negative number on failure.
196 * Searches for the client with the specified index and copies its information
199 int drm_getclient(struct drm_device *dev, void *data,
200 struct drm_file *file_priv)
202 struct drm_client *client = data;
211 list_for_each_entry(pt, &dev->filelist, lhead) {
213 client->auth = pt->authenticated;
214 client->pid = pt->pid;
215 client->uid = pt->uid;
216 client->magic = pt->magic;
217 client->iocs = pt->ioctl_count;
229 * Get statistics information.
231 * \param inode device inode.
232 * \param file_priv DRM file private.
233 * \param cmd command.
234 * \param arg user argument, pointing to a drm_stats structure.
236 * \return zero on success or a negative number on failure.
238 int drm_getstats(struct drm_device *dev, void *data,
239 struct drm_file *file_priv)
241 struct drm_stats *stats = data;
244 memset(stats, 0, sizeof(*stats));
246 for (i = 0; i < dev->counters; i++) {
247 if (dev->types[i] == _DRM_STAT_LOCK)
248 stats->data[i].value =
249 (file_priv->master->lock.hw_lock ? file_priv->master->lock.hw_lock->lock : 0);
251 stats->data[i].value = atomic_read(&dev->counts[i]);
252 stats->data[i].type = dev->types[i];
255 stats->count = dev->counters;
261 * Get device/driver capabilities
263 int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
265 struct drm_get_cap *req = data;
268 switch (req->capability) {
269 case DRM_CAP_DUMB_BUFFER:
270 if (dev->driver->dumb_create)
273 case DRM_CAP_VBLANK_HIGH_CRTC:
276 case DRM_CAP_DUMB_PREFERRED_DEPTH:
277 req->value = dev->mode_config.preferred_depth;
279 case DRM_CAP_DUMB_PREFER_SHADOW:
280 req->value = dev->mode_config.prefer_shadow;
283 req->value |= false /* XXXKIB dev->driver->prime_fd_to_handle */ ? DRM_PRIME_CAP_IMPORT : 0;
284 req->value |= false /* XXXKIB dev->driver->prime_handle_to_fd */ ? DRM_PRIME_CAP_EXPORT : 0;
286 case DRM_CAP_TIMESTAMP_MONOTONIC:
287 req->value = drm_timestamp_monotonic;
298 * \param inode device inode.
299 * \param file_priv DRM file private.
300 * \param cmd command.
301 * \param arg user argument, pointing to a drm_lock structure.
302 * \return zero on success or negative number on failure.
304 * Sets the requested interface version
306 int drm_setversion(struct drm_device *dev, void *data, struct drm_file *file_priv)
308 struct drm_set_version *sv = data;
309 int if_version, retcode = 0;
311 if (sv->drm_di_major != -1) {
312 if (sv->drm_di_major != DRM_IF_MAJOR ||
313 sv->drm_di_minor < 0 || sv->drm_di_minor > DRM_IF_MINOR) {
317 if_version = DRM_IF_VERSION(sv->drm_di_major,
319 dev->if_version = max(if_version, dev->if_version);
320 if (sv->drm_di_minor >= 1) {
322 * Version 1.1 includes tying of DRM to specific device
323 * Version 1.4 has proper PCI domain support
325 retcode = drm_set_busid(dev, file_priv);
331 if (sv->drm_dd_major != -1) {
332 if (sv->drm_dd_major != dev->driver->major ||
333 sv->drm_dd_minor < 0 || sv->drm_dd_minor >
334 dev->driver->minor) {
339 if (dev->driver->set_version)
340 dev->driver->set_version(dev, sv);
344 sv->drm_di_major = DRM_IF_MAJOR;
345 sv->drm_di_minor = DRM_IF_MINOR;
346 sv->drm_dd_major = dev->driver->major;
347 sv->drm_dd_minor = dev->driver->minor;
353 int drm_noop(struct drm_device *dev, void *data,
354 struct drm_file *file_priv)
359 EXPORT_SYMBOL(drm_noop);