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 drm_x mga_##x
23 * Created: Thu Nov 23 03:10:50 2000 by gareth@valinux.com
25 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
26 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
27 * All Rights Reserved.
29 * Permission is hereby granted, free of charge, to any person obtaining a
30 * copy of this software and associated documentation files (the "Software"),
31 * to deal in the Software without restriction, including without limitation
32 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
33 * and/or sell copies of the Software, and to permit persons to whom the
34 * Software is furnished to do so, subject to the following conditions:
36 * The above copyright notice and this permission notice (including the next
37 * paragraph) shall be included in all copies or substantial portions of the
40 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
41 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
42 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
43 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
44 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
45 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
46 * OTHER DEALINGS IN THE SOFTWARE.
51 static void drm_cleanup(struct drm_device * dev);
52 int drm_fb_loaded = 0;
54 static int drm_version(struct drm_device *dev, void *data,
55 struct drm_file *file_priv);
58 static struct drm_ioctl_desc drm_ioctls[] = {
59 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
60 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
61 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
62 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
63 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
65 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
66 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
68 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
69 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
70 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
71 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
73 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
74 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
76 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
77 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
79 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
80 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
81 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
82 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
83 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
84 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
85 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
87 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
88 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
90 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
91 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
93 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
95 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
96 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
97 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
98 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
99 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
100 /* The DRM_IOCTL_DMA ioctl should be defined by the driver. */
101 DRM_IOCTL_DEF(DRM_IOCTL_DMA, NULL, DRM_AUTH),
103 DRM_IOCTL_DEF(DRM_IOCTL_CONTROL, drm_control, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
106 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ACQUIRE, drm_agp_acquire_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
107 DRM_IOCTL_DEF(DRM_IOCTL_AGP_RELEASE, drm_agp_release_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
108 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ENABLE, drm_agp_enable_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
109 DRM_IOCTL_DEF(DRM_IOCTL_AGP_INFO, drm_agp_info_ioctl, DRM_AUTH),
110 DRM_IOCTL_DEF(DRM_IOCTL_AGP_ALLOC, drm_agp_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
111 DRM_IOCTL_DEF(DRM_IOCTL_AGP_FREE, drm_agp_free_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
112 DRM_IOCTL_DEF(DRM_IOCTL_AGP_BIND, drm_agp_bind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
113 DRM_IOCTL_DEF(DRM_IOCTL_AGP_UNBIND, drm_agp_unbind_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
118 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
120 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
122 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_drawable_info, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
124 DRM_IOCTL_DEF(DRM_IOCTL_MM_INIT, drm_mm_init_ioctl,
125 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
126 DRM_IOCTL_DEF(DRM_IOCTL_MM_TAKEDOWN, drm_mm_takedown_ioctl,
127 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
128 DRM_IOCTL_DEF(DRM_IOCTL_MM_LOCK, drm_mm_lock_ioctl,
129 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
130 DRM_IOCTL_DEF(DRM_IOCTL_MM_UNLOCK, drm_mm_unlock_ioctl,
131 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
133 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_CREATE, drm_fence_create_ioctl, DRM_AUTH),
134 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_REFERENCE, drm_fence_reference_ioctl, DRM_AUTH),
135 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_UNREFERENCE, drm_fence_unreference_ioctl, DRM_AUTH),
136 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_SIGNALED, drm_fence_signaled_ioctl, DRM_AUTH),
137 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_FLUSH, drm_fence_flush_ioctl, DRM_AUTH),
138 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_WAIT, drm_fence_wait_ioctl, DRM_AUTH),
139 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_EMIT, drm_fence_emit_ioctl, DRM_AUTH),
140 DRM_IOCTL_DEF(DRM_IOCTL_FENCE_BUFFERS, drm_fence_buffers_ioctl, DRM_AUTH),
142 DRM_IOCTL_DEF(DRM_IOCTL_BO_CREATE, drm_bo_create_ioctl, DRM_AUTH),
143 DRM_IOCTL_DEF(DRM_IOCTL_BO_MAP, drm_bo_map_ioctl, DRM_AUTH),
144 DRM_IOCTL_DEF(DRM_IOCTL_BO_UNMAP, drm_bo_unmap_ioctl, DRM_AUTH),
145 DRM_IOCTL_DEF(DRM_IOCTL_BO_REFERENCE, drm_bo_reference_ioctl, DRM_AUTH),
146 DRM_IOCTL_DEF(DRM_IOCTL_BO_UNREFERENCE, drm_bo_unreference_ioctl, DRM_AUTH),
147 DRM_IOCTL_DEF(DRM_IOCTL_BO_SETSTATUS, drm_bo_setstatus_ioctl, DRM_AUTH),
148 DRM_IOCTL_DEF(DRM_IOCTL_BO_INFO, drm_bo_info_ioctl, DRM_AUTH),
149 DRM_IOCTL_DEF(DRM_IOCTL_BO_WAIT_IDLE, drm_bo_wait_idle_ioctl, DRM_AUTH),
150 DRM_IOCTL_DEF(DRM_IOCTL_BO_VERSION, drm_bo_version_ioctl, 0),
152 DRM_IOCTL_DEF(DRM_IOCTL_MM_INFO, drm_mm_info_ioctl, 0),
154 DRM_IOCTL_DEF(DRM_IOCTL_GEM_ALLOC, drm_gem_alloc_ioctl, 0),
155 DRM_IOCTL_DEF(DRM_IOCTL_GEM_UNREFERENCE, drm_gem_unreference_ioctl, 0),
156 DRM_IOCTL_DEF(DRM_IOCTL_GEM_PREAD, drm_gem_pread_ioctl, 0),
157 DRM_IOCTL_DEF(DRM_IOCTL_GEM_PWRITE, drm_gem_pwrite_ioctl, 0),
158 DRM_IOCTL_DEF(DRM_IOCTL_GEM_MMAP, drm_gem_mmap_ioctl, 0),
159 DRM_IOCTL_DEF(DRM_IOCTL_GEM_NAME, drm_gem_name_ioctl, DRM_AUTH),
160 DRM_IOCTL_DEF(DRM_IOCTL_GEM_OPEN, drm_gem_open_ioctl, DRM_AUTH),
163 #define DRM_CORE_IOCTL_COUNT ARRAY_SIZE( drm_ioctls )
167 * Take down the DRM device.
169 * \param dev DRM device structure.
171 * Frees every resource in \p dev.
175 int drm_lastclose(struct drm_device * dev)
177 struct drm_magic_entry *pt, *next;
178 struct drm_map_list *r_list, *list_t;
179 struct drm_vma_entry *vma, *vma_temp;
185 * We can't do much about this function failing.
188 drm_bo_driver_finish(dev);
190 if (dev->driver->lastclose)
191 dev->driver->lastclose(dev);
192 DRM_DEBUG("driver lastclose completed\n");
195 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
200 if (dev->irq_enabled)
201 drm_irq_uninstall(dev);
203 /* Free drawable information memory */
204 mutex_lock(&dev->struct_mutex);
206 drm_drawable_free_all(dev);
207 del_timer(&dev->timer);
210 drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
215 if (dev->magicfree.next) {
216 list_for_each_entry_safe(pt, next, &dev->magicfree, head) {
218 drm_ht_remove_item(&dev->magiclist, &pt->hash_item);
219 drm_free(pt, sizeof(*pt), DRM_MEM_MAGIC);
221 drm_ht_remove(&dev->magiclist);
225 /* Clear AGP information */
226 if (drm_core_has_AGP(dev) && dev->agp) {
227 struct drm_agp_mem *entry, *tempe;
229 /* Remove AGP resources, but leave dev->agp
230 intact until drv_cleanup is called. */
231 list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
233 drm_unbind_agp(entry->memory);
234 drm_free_agp(entry->memory, entry->pages);
235 drm_free(entry, sizeof(*entry), DRM_MEM_AGPLISTS);
237 INIT_LIST_HEAD(&dev->agp->memory);
239 if (dev->agp->acquired)
240 drm_agp_release(dev);
242 dev->agp->acquired = 0;
243 dev->agp->enabled = 0;
245 if (drm_core_check_feature(dev, DRIVER_SG) && dev->sg) {
246 drm_sg_cleanup(dev->sg);
250 /* Clear vma list (only built for debugging) */
251 list_for_each_entry_safe(vma, vma_temp, &dev->vmalist, head) {
252 list_del(&vma->head);
253 drm_ctl_free(vma, sizeof(*vma), DRM_MEM_VMAS);
256 list_for_each_entry_safe(r_list, list_t, &dev->maplist, head) {
257 if (!(r_list->map->flags & _DRM_DRIVER)) {
258 drm_rmmap_locked(dev, r_list->map);
263 if (drm_core_check_feature(dev, DRIVER_DMA_QUEUE) && dev->queuelist) {
264 for (i = 0; i < dev->queue_count; i++) {
266 if (dev->queuelist[i]) {
267 drm_free(dev->queuelist[i],
268 sizeof(*dev->queuelist[0]),
270 dev->queuelist[i] = NULL;
273 drm_free(dev->queuelist,
274 dev->queue_slots * sizeof(*dev->queuelist),
276 dev->queuelist = NULL;
278 dev->queue_count = 0;
280 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA))
281 drm_dma_takedown(dev);
283 if (dev->lock.hw_lock) {
284 dev->sigdata.lock = dev->lock.hw_lock = NULL; /* SHM removed */
285 dev->lock.file_priv = NULL;
286 wake_up_interruptible(&dev->lock.lock_queue);
288 dev->dev_mapping = NULL;
289 mutex_unlock(&dev->struct_mutex);
291 DRM_DEBUG("lastclose completed\n");
295 void drm_cleanup_pci(struct pci_dev *pdev)
297 struct drm_device *dev = pci_get_drvdata(pdev);
299 pci_set_drvdata(pdev, NULL);
300 pci_release_regions(pdev);
304 EXPORT_SYMBOL(drm_cleanup_pci);
307 * Module initialization. Called via init_module at module load time, or via
308 * linux/init/main.c (this is not currently supported).
310 * \return zero on success or a negative number on failure.
312 * Initializes an array of drm_device structures, and attempts to
313 * initialize all available devices, using consecutive minors, registering the
314 * stubs and initializing the AGP device.
316 * Expands the \c DRIVER_PREINIT and \c DRIVER_POST_INIT macros before and
317 * after the initialization for driver customization.
319 int drm_init(struct drm_driver *driver,
320 struct pci_device_id *pciidlist)
322 struct pci_dev *pdev;
323 struct pci_device_id *pid;
328 for (i = 0; (pciidlist[i].vendor != 0) && !drm_fb_loaded; i++) {
332 /* pass back in pdev to account for multiple identical cards */
334 pci_get_subsys(pid->vendor, pid->device, pid->subvendor,
335 pid->subdevice, pdev))) {
336 /* Are there device class requirements? */
337 if ((pid->class != 0)
338 && ((pdev->class & pid->class_mask) != pid->class)) {
341 /* is there already a driver loaded, or (short circuit saves work) */
342 /* does something like VesaFB have control of the memory region? */
343 if (pci_dev_driver(pdev)
344 || pci_request_regions(pdev, "DRM scan")) {
345 /* go into stealth mode */
350 /* no fbdev or vesadev, put things back and wait for normal probe */
351 pci_release_regions(pdev);
356 return pci_register_driver(&driver->pci_driver);
358 for (i = 0; pciidlist[i].vendor != 0; i++) {
362 /* pass back in pdev to account for multiple identical cards */
364 pci_get_subsys(pid->vendor, pid->device,
365 pid->subvendor, pid->subdevice,
367 /* Are there device class requirements? */
368 if ((pid->class != 0)
369 && ((pdev->class & pid->class_mask) != pid->class)) {
372 /* stealth mode requires a manual probe */
374 if ((rc = drm_get_dev(pdev, &pciidlist[i], driver))) {
380 DRM_INFO("Used old pci detect: framebuffer loaded\n");
384 EXPORT_SYMBOL(drm_init);
387 * Called via cleanup_module() at module unload time.
389 * Cleans up all DRM device, calling drm_lastclose().
393 static void drm_cleanup(struct drm_device * dev)
398 DRM_ERROR("cleanup called no dev\n");
403 drm_fence_manager_takedown(dev);
405 if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp
406 && dev->agp->agp_mtrr >= 0) {
408 retval = mtrr_del(dev->agp->agp_mtrr,
409 dev->agp->agp_info.aper_base,
410 dev->agp->agp_info.aper_size * 1024 * 1024);
411 DRM_DEBUG("mtrr_del=%d\n", retval);
414 if (drm_core_has_AGP(dev) && dev->agp) {
415 drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
418 if (dev->driver->unload)
419 dev->driver->unload(dev);
422 pci_disable_device(dev->pdev);
424 drm_ctxbitmap_cleanup(dev);
425 drm_ht_remove(&dev->map_hash);
426 drm_memrange_takedown(&dev->offset_manager);
427 drm_ht_remove(&dev->object_hash);
429 drm_put_minor(&dev->primary);
430 if (drm_put_dev(dev))
431 DRM_ERROR("Cannot unload module\n");
434 int drm_minors_cleanup(int id, void *ptr, void *data)
436 struct drm_minor *minor = ptr;
437 struct drm_device *dev;
438 struct drm_driver *driver = data;
441 if (minor->dev->driver != driver)
444 if (minor->type != DRM_MINOR_LEGACY)
448 pci_dev_put(dev->pdev);
453 void drm_exit(struct drm_driver *driver)
457 idr_for_each(&drm_minors_idr, &drm_minors_cleanup, driver);
459 pci_unregister_driver(&driver->pci_driver);
460 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15))
463 DRM_INFO("Module unloaded\n");
465 EXPORT_SYMBOL(drm_exit);
467 /** File operations structure */
468 static const struct file_operations drm_stub_fops = {
469 .owner = THIS_MODULE,
470 .open = drm_stub_open
473 static int __init drm_core_init(void)
477 unsigned long avail_memctl_mem;
478 unsigned long max_memctl_mem;
480 idr_init(&drm_minors_idr);
484 * AGP only allows low / DMA32 memory ATM.
487 avail_memctl_mem = si.totalram - si.totalhigh;
493 max_memctl_mem = 1UL << (32 - PAGE_SHIFT);
494 max_memctl_mem = (max_memctl_mem / si.mem_unit) * PAGE_SIZE;
496 if (avail_memctl_mem >= max_memctl_mem)
497 avail_memctl_mem = max_memctl_mem;
499 drm_init_memctl(avail_memctl_mem/2, avail_memctl_mem*3/4, si.mem_unit);
503 if (register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops))
506 drm_class = drm_sysfs_create(THIS_MODULE, "drm");
507 if (IS_ERR(drm_class)) {
508 printk(KERN_ERR "DRM: Error creating drm class.\n");
509 ret = PTR_ERR(drm_class);
513 drm_proc_root = proc_mkdir("dri", NULL);
514 if (!drm_proc_root) {
515 DRM_ERROR("Cannot create /proc/dri\n");
522 DRM_INFO("Initialized %s %d.%d.%d %s\n",
524 CORE_MAJOR, CORE_MINOR, CORE_PATCHLEVEL, CORE_DATE);
529 unregister_chrdev(DRM_MAJOR, "drm");
531 idr_destroy(&drm_minors_idr);
536 static void __exit drm_core_exit(void)
538 remove_proc_entry("dri", NULL);
541 unregister_chrdev(DRM_MAJOR, "drm");
543 idr_destroy(&drm_minors_idr);
546 module_init(drm_core_init);
547 module_exit(drm_core_exit);
550 * Get version information
552 * \param inode device inode.
553 * \param file_priv DRM file private.
554 * \param cmd command.
555 * \param arg user argument, pointing to a drm_version structure.
556 * \return zero on success or negative number on failure.
558 * Fills in the version information in \p arg.
560 static int drm_version(struct drm_device *dev, void *data,
561 struct drm_file *file_priv)
563 struct drm_version *version = data;
566 version->version_major = dev->driver->major;
567 version->version_minor = dev->driver->minor;
568 version->version_patchlevel = dev->driver->patchlevel;
569 DRM_COPY(version->name, dev->driver->name);
570 DRM_COPY(version->date, dev->driver->date);
571 DRM_COPY(version->desc, dev->driver->desc);
577 * Called whenever a process performs an ioctl on /dev/drm.
579 * \param inode device inode.
580 * \param file_priv DRM file private.
581 * \param cmd command.
582 * \param arg user argument.
583 * \return zero on success or negative number on failure.
585 * Looks up the ioctl function in the ::ioctls table, checking for root
586 * previleges if so required, and dispatches to the respective function.
588 * Copies data in and out according to the size and direction given in cmd,
589 * which must match the ioctl cmd known by the kernel. The kernel uses a 512
590 * byte stack buffer to store the ioctl arguments in kernel space. Should we
591 * ever need much larger ioctl arguments, we may need to allocate memory.
593 int drm_ioctl(struct inode *inode, struct file *filp,
594 unsigned int cmd, unsigned long arg)
596 return drm_unlocked_ioctl(filp, cmd, arg);
598 EXPORT_SYMBOL(drm_ioctl);
600 long drm_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
602 struct drm_file *file_priv = filp->private_data;
603 struct drm_device *dev = file_priv->minor->dev;
604 struct drm_ioctl_desc *ioctl;
606 unsigned int nr = DRM_IOCTL_NR(cmd);
607 int retcode = -EINVAL;
610 atomic_inc(&dev->ioctl_count);
611 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
612 ++file_priv->ioctl_count;
614 DRM_DEBUG("pid=%d, cmd=0x%02x, nr=0x%02x, dev 0x%lx, auth=%d\n",
615 current->pid, cmd, nr, (long)old_encode_dev(file_priv->minor->device),
616 file_priv->authenticated);
618 if ((nr >= DRM_CORE_IOCTL_COUNT) &&
619 ((nr < DRM_COMMAND_BASE) || (nr >= DRM_COMMAND_END)))
621 if ((nr >= DRM_COMMAND_BASE) && (nr < DRM_COMMAND_END)
622 && (nr < DRM_COMMAND_BASE + dev->driver->num_ioctls))
623 ioctl = &dev->driver->ioctls[nr - DRM_COMMAND_BASE];
624 else if ((nr >= DRM_COMMAND_END) || (nr < DRM_COMMAND_BASE))
625 ioctl = &drm_ioctls[nr];
632 * This check is disabled, because driver private ioctl->cmd
633 * are not the ioctl commands with size and direction bits but
634 * just the indices. The DRM core ioctl->cmd are the proper ioctl
635 * commands. The drivers' ioctl tables need to be fixed.
637 if (ioctl->cmd != cmd) {
643 /* is there a local override? */
644 if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)
645 func = dev->driver->dma_ioctl;
648 if (copy_from_user(kdata, (void __user *)arg,
649 _IOC_SIZE(cmd)) != 0) {
656 DRM_DEBUG("no function\n");
658 } else if (((ioctl->flags & DRM_ROOT_ONLY) && !capable(CAP_SYS_ADMIN)) ||
659 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
660 ((ioctl->flags & DRM_MASTER) && !file_priv->master)) {
663 retcode = func(dev, kdata, file_priv);
666 if ((retcode == 0) && (cmd & IOC_OUT)) {
667 if (copy_to_user((void __user *)arg, kdata,
668 _IOC_SIZE(cmd)) != 0)
673 atomic_dec(&dev->ioctl_count);
675 DRM_DEBUG("ret = %d\n", retcode);
678 EXPORT_SYMBOL(drm_unlocked_ioctl);
680 drm_local_map_t *drm_getsarea(struct drm_device *dev)
682 struct drm_map_list *entry;
684 list_for_each_entry(entry, &dev->maplist, head) {
685 if (entry->map && entry->map->type == _DRM_SHM &&
686 (entry->map->flags & _DRM_CONTAINS_LOCK)) {
692 EXPORT_SYMBOL(drm_getsarea);