3 * Generic driver template
5 * \author Rickard E. (Rik) Faith <faith@valinux.com>
6 * \author Gareth Hughes <gareth@valinux.com>
8 * To use this template, you must at least define the following (samples
9 * given for the MGA driver):
12 * #define DRIVER_AUTHOR "VA Linux Systems, Inc."
14 * #define DRIVER_NAME "mga"
15 * #define DRIVER_DESC "Matrox G200/G400"
16 * #define DRIVER_DATE "20001127"
18 * #define DRIVER_IOCTL_COUNT DRM_ARRAY_SIZE( mga_ioctls )
20 * #define drm_x mga_##x
25 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
27 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
28 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
29 * All Rights Reserved.
31 * Permission is hereby granted, free of charge, to any person obtaining a
32 * copy of this software and associated documentation files (the "Software"),
33 * to deal in the Software without restriction, including without limitation
34 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
35 * and/or sell copies of the Software, and to permit persons to whom the
36 * Software is furnished to do so, subject to the following conditions:
38 * The above copyright notice and this permission notice (including the next
39 * paragraph) shall be included in all copies or substantial portions of the
42 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
43 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
44 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
45 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
46 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
47 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
48 * OTHER DEALINGS IN THE SOFTWARE.
54 static int drm_version(struct inode *inode, struct file *filp,
55 unsigned int cmd, unsigned long arg);
58 static drm_ioctl_desc_t drm_ioctls[] = {
59 [DRM_IOCTL_NR(DRM_IOCTL_VERSION)] = {drm_version, 0},
60 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE)] = {drm_getunique, 0},
61 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAGIC)] = {drm_getmagic, 0},
62 [DRM_IOCTL_NR(DRM_IOCTL_IRQ_BUSID)] = {drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY},
63 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP)] = {drm_getmap, 0},
64 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT)] = {drm_getclient, 0},
65 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS)] = {drm_getstats, 0},
66 [DRM_IOCTL_NR(DRM_IOCTL_SET_VERSION)] = {drm_setversion, DRM_MASTER|DRM_ROOT_ONLY},
67 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE)] = {drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
68 [DRM_IOCTL_NR(DRM_IOCTL_BLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
69 [DRM_IOCTL_NR(DRM_IOCTL_UNBLOCK)] = {drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
70 [DRM_IOCTL_NR(DRM_IOCTL_AUTH_MAGIC)] = {drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
72 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP)] = {drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
73 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP)] = {drm_rmmap_ioctl, DRM_AUTH},
75 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX)] = {drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
76 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX)] = {drm_getsareactx, DRM_AUTH},
78 [DRM_IOCTL_NR(DRM_IOCTL_ADD_CTX)] = {drm_addctx, DRM_AUTH|DRM_ROOT_ONLY},
79 [DRM_IOCTL_NR(DRM_IOCTL_RM_CTX)] = {drm_rmctx, DRM_AUTH|DRM_ROOT_ONLY},
80 [DRM_IOCTL_NR(DRM_IOCTL_MOD_CTX)] = {drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
81 [DRM_IOCTL_NR(DRM_IOCTL_GET_CTX)] = {drm_getctx, DRM_AUTH},
82 [DRM_IOCTL_NR(DRM_IOCTL_SWITCH_CTX)] = {drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
83 [DRM_IOCTL_NR(DRM_IOCTL_NEW_CTX)] = {drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
84 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX)] = {drm_resctx, DRM_AUTH},
86 [DRM_IOCTL_NR(DRM_IOCTL_ADD_DRAW)] = {drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
87 [DRM_IOCTL_NR(DRM_IOCTL_RM_DRAW)] = {drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
89 [DRM_IOCTL_NR(DRM_IOCTL_LOCK)] = {drm_lock, DRM_AUTH},
90 [DRM_IOCTL_NR(DRM_IOCTL_UNLOCK)] = {drm_unlock, DRM_AUTH},
92 [DRM_IOCTL_NR(DRM_IOCTL_FINISH)] = {drm_noop, DRM_AUTH},
94 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS)] = {drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
95 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS)] = {drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
96 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS)] = {drm_infobufs, DRM_AUTH},
97 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS)] = {drm_mapbufs, DRM_AUTH},
98 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS)] = {drm_freebufs, DRM_AUTH},
99 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
100 [DRM_IOCTL_NR(DRM_IOCTL_DMA)] = {NULL, DRM_AUTH},
102 [DRM_IOCTL_NR(DRM_IOCTL_CONTROL)] = {drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
105 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ACQUIRE)] = {drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
106 [DRM_IOCTL_NR(DRM_IOCTL_AGP_RELEASE)] = {drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
107 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE)] = {drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
108 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO)] = {drm_agp_info_ioctl, DRM_AUTH},
109 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC)] = {drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
110 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE)] = {drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
111 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND)] = {drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
112 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND)] = {drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
115 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC)] = {drm_sg_alloc, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
116 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE)] = {drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
118 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK)] = {drm_wait_vblank, 0},
120 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW)] = {drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY},
123 #define DRIVER_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
126 * Take down the DRM device.
128 * \param dev DRM device structure.
130 * Frees every resource in \p dev.
134 int drm_lastclose(drm_device_t * dev)
136 drm_magic_entry_t *pt, *next;
137 drm_map_list_t *r_list;
138 drm_vma_entry_t *vma, *vma_next;
143 if (dev->driver->lastclose)
144 dev->driver->lastclose(dev);
145 DRM_DEBUG("driver lastclose completed\n");
148 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
153 if (dev->irq_enabled)
154 drm_irq_uninstall(dev);
156 /* Free drawable information memory */
157 for (i = 0; i < dev->drw_bitfield_length / sizeof(*dev->drw_bitfield);
159 drm_drawable_info_t *info = drm_get_drawable_info(dev, i);
162 drm_free(info->rects, info->num_rects *
163 sizeof(drm_clip_rect_t), DRM_MEM_BUFS);
164 drm_free(info, sizeof(*info), DRM_MEM_BUFS);
168 mutex_lock(&dev->struct_mutex);
169 del_timer(&dev->timer);
172 if (dev->magicfree.next) {
173 list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
175 drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
176 drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
178 drm_ht_remove(&dev->magiclist);
181 /* Clear AGP information */
182 if (drm_core_has_AGP(dev) && dev->agp) {
183 drm_agp_mem_t *entry;
184 drm_agp_mem_t *nexte;
186 /* Remove AGP resources, but leave dev->agp
187 intact until drv_cleanup is called. */
188 for (entry = dev->agp->memory; entry; entry = nexte) {
191 drm_unbind_agp(entry->memory);
192 drm_free_agp(entry->memory, entry->pages);
193 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
195 dev->agp->memory = NULL;
197 if (dev->agp->acquired)
198 drm_agp_release(dev);
200 dev->agp->acquired = 0;
201 dev->agp->enabled = 0;
203 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
204 drm_sg_cleanup(dev->sg);
208 /* Clear vma list (only built for debugging) */
210 for (vma = dev->vmalist; vma; vma = vma_next) {
211 vma_next = vma->next;
212 drm_free(vma, sizeof(*vma), DRM_MEM_VMAS);
218 while (!list_empty(&dev->maplist->head)) {
219 struct list_head *list = dev->maplist->head.next;
220 r_list = list_entry(list, drm_map_list_t, head);
221 drm_rmmap_locked(dev, r_list->map);
225 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
226 for (i = 0; i < dev->queue_count; i++) {
227 if (dev->queuelist[i]) {
228 drm_free(dev->queuelist[i],
229 sizeof(*dev->queuelist[0]),
231 dev->queuelist[i] = NULL;
234 drm_free(dev->queuelist,
235 dev->queue_slots * sizeof(*dev->queuelist),
237 dev->queuelist = NULL;
239 dev->queue_count = 0;
241 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
242 drm_dma_takedown(dev);
244 if (dev->lock.hw_lock) {
245 dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
246 dev->lock.filp = NULL;
247 wake_up_interruptible(&dev->lock.lock_queue);
249 mutex_unlock(&dev->struct_mutex);
251 DRM_DEBUG("lastclose completed\n");
256 * Module initialization. Called via init_module at module load time, or via
257 * linux/init/main.c (this is not currently supported).
259 * \return zero on success or a negative number on failure.
261 * Initializes an array of drm_device structures, and attempts to
262 * initialize all available devices, using consecutive minors, registering the
263 * stubs and initializing the AGP device.
265 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
266 * after the initialization for driver customization.
268 int drm_init(struct drm_driver *driver)
270 struct pci_dev *pdev = NULL;
271 struct pci_device_id *pid;
278 for (i = 0; driver->pci_driver.id_table[i].vendor != 0; i++) {
279 pid = (struct pci_device_id *)&driver->pci_driver.id_table[i];
282 /* pass back in pdev to account for multiple identical cards */
284 pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
285 pid->subdevice, pdev)) != NULL) {
286 /* stealth mode requires a manual probe */
288 drm_get_dev(pdev, pid, driver);
294 EXPORT_SYMBOL(drm_init);
297 * Called via cleanup_module() at module unload time.
299 * Cleans up all DRM device, calling drm_lastclose().
303 static void drm_cleanup(drm_device_t * dev)
308 DRM_ERROR("cleanup called no dev\n");
315 drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
317 drm_ht_remove(&dev->map_hash);
320 drm_ctxbitmap_cleanup(dev);
322 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) &&
323 dev->agp && dev->agp->agp_mtrr >= 0) {
325 retval = mtrr_del(dev->agp->agp_mtrr,
326 dev->agp->agp_info.aper_base,
327 dev->agp->agp_info.aper_size * 1024 * 1024);
328 DRM_DEBUG("mtrr_del=%d\n", retval);
331 if (drm_core_has_AGP(dev) && dev->agp) {
332 drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
336 if (dev->driver->unload)
337 dev->driver->unload(dev);
339 drm_put_head(&dev->primary);
340 if (drm_put_dev(dev))
341 DRM_ERROR("Cannot unload module\n");
344 void drm_exit(struct drm_driver *driver)
347 drm_device_t *dev = NULL;
352 for (i = 0; i < drm_cards_limit; i++) {
358 if (head->dev->driver != driver)
362 /* release the pci driver */
364 pci_dev_put(dev->pdev);
368 DRM_INFO("Module unloaded\n");
371 EXPORT_SYMBOL(drm_exit);
373 /** File operations structure */
374 static const struct file_operations drm_stub_fops = {
375 .owner = THIS_MODULE,
376 .open = drm_stub_open
379 static int __init drm_core_init(void)
385 DRM_MAX_MINOR + 1 ? drm_cards_limit : DRM_MAX_MINOR + 1);
387 drm_calloc(drm_cards_limit, sizeof(*drm_heads), DRM_MEM_STUB);
391 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
394 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
395 if (IS_ERR(drm_class)) {
396 printk(KERN_ERR "DRM: Error creating drm class.\n");
397 ret = PTR_ERR(drm_class);
401 drm_proc_root = proc_mkdir("dri", NULL);
402 if (!drm_proc_root) {
403 DRM_ERROR("Cannot create /proc/dri\n");
408 DRM_INFO("Initialized %s %d.%d.%d %s\n",
409 CORE_NAME, CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
412 drm_sysfs_destroy(drm_class);
414 unregister_chrdev(DRM_MAJOR, "drm");
415 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
420 static void __exit drm_core_exit(void)
422 remove_proc_entry("dri", NULL);
423 drm_sysfs_destroy(drm_class);
425 unregister_chrdev(DRM_MAJOR, "drm");
427 drm_free(drm_heads, sizeof(*drm_heads) * drm_cards_limit, DRM_MEM_STUB);
430 module_init(drm_core_init);
431 module_exit(drm_core_exit);
434 * Get version information
436 * \param inode device inode.
437 * \param filp file pointer.
438 * \param cmd command.
439 * \param arg user argument, pointing to a drm_version structure.
440 * \return zero on success or negative number on failure.
442 * Fills in the version information in \p arg.
444 static int drm_version(struct inode *inode, struct file *filp,
445 unsigned int cmd, unsigned long arg)
447 drm_file_t *priv = filp->private_data;
448 drm_device_t *dev = priv->head->dev;
449 drm_version_t __user *argp = (void __user *)arg;
450 drm_version_t version;
453 if (copy_from_user(&version, argp, sizeof(version)))
456 version.version_major = dev->driver->major;
457 version.version_minor = dev->driver->minor;
458 version.version_patchlevel = dev->driver->patchlevel;
459 DRM_COPY(version.name, dev->driver->name);
460 DRM_COPY(version.date, dev->driver->date);
461 DRM_COPY(version.desc, dev->driver->desc);
463 if (copy_to_user(argp, &version, sizeof(version)))
469 * Called whenever a process performs an ioctl on /dev/drm.
471 * \param inode device inode.
472 * \param filp file pointer.
473 * \param cmd command.
474 * \param arg user argument.
475 * \return zero on success or negative number on failure.
477 * Looks up the ioctl function in the ::ioctls table, checking for root
478 * previleges if so required, and dispatches to the respective function.
480 int drm_ioctl(struct inode *inode, struct file *filp,
481 unsigned int cmd, unsigned long arg)
483 drm_file_t *priv = filp->private_data;
484 drm_device_t *dev = priv->head->dev;
485 drm_ioctl_desc_t *ioctl;
487 unsigned int nr = DRM_IOCTL_NR(cmd);
488 int retcode = -EINVAL;
490 atomic_inc(&dev->ioctl_count);
491 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
494 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
495 current->pid, cmd, nr,
496 (long)old_encode_dev(priv->head->device),
497 priv->authenticated);
499 if (nr < DRIVER_IOCTL_COUNT)
500 ioctl = &drm_ioctls[nr];
501 else if ((nr >= DRM_COMMAND_BASE)
502 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
503 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
508 /* is there a local override? */
509 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
510 func = dev->driver->dma_ioctl;
513 DRM_DEBUG("no function\n");
515 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
516 ((ioctl->flags & DRM_AUTH) && !priv->authenticated) ||
517 ((ioctl->flags & DRM_MASTER) && !priv->master)) {
520 retcode = func(inode, filp, cmd, arg);
524 atomic_dec(&dev->ioctl_count);
526 DRM_DEBUG("ret = %x\n", retcode);
530 EXPORT_SYMBOL(drm_ioctl);