2 * Copyright 1999, 2000 Precision Insight, Inc., Cedar Park, Texas.
3 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
26 * Rickard E. (Rik) Faith <faith@valinux.com>
27 * Gareth Hughes <gareth@valinux.com>
32 * The catch-all file for DRM device support, including module setup/teardown,
33 * open/close, and ioctl dispatch.
36 #include <machine/limits.h>
37 #include "dev/drm/drmP.h"
38 #include "dev/drm/drm.h"
39 #include "dev/drm/drm_sarea.h"
41 #ifdef DRM_DEBUG_DEFAULT_ON
42 int drm_debug_flag = 1;
44 int drm_debug_flag = 0;
47 static int drm_load(struct drm_device *dev);
48 static void drm_unload(struct drm_device *dev);
49 static drm_pci_id_list_t *drm_find_description(int vendor, int device,
50 drm_pci_id_list_t *idlist);
52 #define DRIVER_SOFTC(unit) \
53 ((struct drm_device *)devclass_get_softc(drm_devclass, unit))
55 MODULE_VERSION(drm, 1);
56 MODULE_DEPEND(drm, agp, 1, 1, 1);
57 MODULE_DEPEND(drm, pci, 1, 1, 1);
58 MODULE_DEPEND(drm, mem, 1, 1, 1);
60 static drm_ioctl_desc_t drm_ioctls[256] = {
61 DRM_IOCTL_DEF(DRM_IOCTL_VERSION, drm_version, 0),
62 DRM_IOCTL_DEF(DRM_IOCTL_GET_UNIQUE, drm_getunique, 0),
63 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAGIC, drm_getmagic, 0),
64 DRM_IOCTL_DEF(DRM_IOCTL_IRQ_BUSID, drm_irq_by_busid, DRM_MASTER|DRM_ROOT_ONLY),
65 DRM_IOCTL_DEF(DRM_IOCTL_GET_MAP, drm_getmap, 0),
66 DRM_IOCTL_DEF(DRM_IOCTL_GET_CLIENT, drm_getclient, 0),
67 DRM_IOCTL_DEF(DRM_IOCTL_GET_STATS, drm_getstats, 0),
68 DRM_IOCTL_DEF(DRM_IOCTL_SET_VERSION, drm_setversion, DRM_MASTER|DRM_ROOT_ONLY),
70 DRM_IOCTL_DEF(DRM_IOCTL_SET_UNIQUE, drm_setunique, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
71 DRM_IOCTL_DEF(DRM_IOCTL_BLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
72 DRM_IOCTL_DEF(DRM_IOCTL_UNBLOCK, drm_noop, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
73 DRM_IOCTL_DEF(DRM_IOCTL_AUTH_MAGIC, drm_authmagic, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
75 DRM_IOCTL_DEF(DRM_IOCTL_ADD_MAP, drm_addmap_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
76 DRM_IOCTL_DEF(DRM_IOCTL_RM_MAP, drm_rmmap_ioctl, DRM_AUTH),
78 DRM_IOCTL_DEF(DRM_IOCTL_SET_SAREA_CTX, drm_setsareactx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
79 DRM_IOCTL_DEF(DRM_IOCTL_GET_SAREA_CTX, drm_getsareactx, DRM_AUTH),
81 DRM_IOCTL_DEF(DRM_IOCTL_ADD_CTX, drm_addctx, DRM_AUTH|DRM_ROOT_ONLY),
82 DRM_IOCTL_DEF(DRM_IOCTL_RM_CTX, drm_rmctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
83 DRM_IOCTL_DEF(DRM_IOCTL_MOD_CTX, drm_modctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
84 DRM_IOCTL_DEF(DRM_IOCTL_GET_CTX, drm_getctx, DRM_AUTH),
85 DRM_IOCTL_DEF(DRM_IOCTL_SWITCH_CTX, drm_switchctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
86 DRM_IOCTL_DEF(DRM_IOCTL_NEW_CTX, drm_newctx, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
87 DRM_IOCTL_DEF(DRM_IOCTL_RES_CTX, drm_resctx, DRM_AUTH),
89 DRM_IOCTL_DEF(DRM_IOCTL_ADD_DRAW, drm_adddraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
90 DRM_IOCTL_DEF(DRM_IOCTL_RM_DRAW, drm_rmdraw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
92 DRM_IOCTL_DEF(DRM_IOCTL_LOCK, drm_lock, DRM_AUTH),
93 DRM_IOCTL_DEF(DRM_IOCTL_UNLOCK, drm_unlock, DRM_AUTH),
95 DRM_IOCTL_DEF(DRM_IOCTL_FINISH, drm_noop, DRM_AUTH),
97 DRM_IOCTL_DEF(DRM_IOCTL_ADD_BUFS, drm_addbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
98 DRM_IOCTL_DEF(DRM_IOCTL_MARK_BUFS, drm_markbufs, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
99 DRM_IOCTL_DEF(DRM_IOCTL_INFO_BUFS, drm_infobufs, DRM_AUTH),
100 DRM_IOCTL_DEF(DRM_IOCTL_MAP_BUFS, drm_mapbufs, DRM_AUTH),
101 DRM_IOCTL_DEF(DRM_IOCTL_FREE_BUFS, drm_freebufs, DRM_AUTH),
102 DRM_IOCTL_DEF(DRM_IOCTL_DMA, drm_dma, DRM_AUTH),
104 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),
115 DRM_IOCTL_DEF(DRM_IOCTL_SG_ALLOC, drm_sg_alloc_ioctl, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
116 DRM_IOCTL_DEF(DRM_IOCTL_SG_FREE, drm_sg_free, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
117 DRM_IOCTL_DEF(DRM_IOCTL_WAIT_VBLANK, drm_wait_vblank, 0),
118 DRM_IOCTL_DEF(DRM_IOCTL_MODESET_CTL, drm_modeset_ctl, 0),
119 DRM_IOCTL_DEF(DRM_IOCTL_UPDATE_DRAW, drm_update_draw, DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY),
122 static struct dev_ops drm_cdevsw = {
123 { "drm", 145, D_TRACKCLOSE },
125 .d_close = drm_close,
127 .d_ioctl = drm_ioctl,
132 int drm_msi = 1; /* Enable by default. */
133 TUNABLE_INT("hw.drm.msi", &drm_msi);
135 static struct drm_msi_blacklist_entry drm_msi_blacklist[] = {
136 {0x8086, 0x2772}, /* Intel i945G */ \
137 {0x8086, 0x27A2}, /* Intel i945GM */ \
138 {0x8086, 0x27AE}, /* Intel i945GME */ \
142 static int drm_msi_is_blacklisted(int vendor, int device)
146 for (i = 0; drm_msi_blacklist[i].vendor != 0; i++) {
147 if ((drm_msi_blacklist[i].vendor == vendor) &&
148 (drm_msi_blacklist[i].device == device)) {
156 int drm_probe(device_t kdev, drm_pci_id_list_t *idlist)
158 drm_pci_id_list_t *id_entry;
162 if (!strcmp(device_get_name(kdev), "drmsub"))
163 realdev = device_get_parent(kdev);
166 vendor = pci_get_vendor(realdev);
167 device = pci_get_device(realdev);
170 if (pci_get_class(kdev) != PCIC_DISPLAY
171 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
175 id_entry = drm_find_description(vendor, device, idlist);
176 if (id_entry != NULL) {
177 if (!device_get_desc(kdev)) {
178 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
179 device_set_desc(kdev, id_entry->name);
187 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
189 struct drm_device *dev;
190 drm_pci_id_list_t *id_entry;
196 unit = device_get_unit(kdev);
197 dev = device_get_softc(kdev);
199 if (!strcmp(device_get_name(kdev), "drmsub"))
200 dev->device = device_get_parent(kdev);
204 dev_ops_add(&drm_cdevsw, -1, unit);
205 dev->devnode = make_dev(&drm_cdevsw,
213 dev->pci_bus = pci_get_bus(dev->device);
214 dev->pci_slot = pci_get_slot(dev->device);
215 dev->pci_func = pci_get_function(dev->device);
217 dev->pci_vendor = pci_get_vendor(dev->device);
218 dev->pci_device = pci_get_device(dev->device);
221 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
223 msicount = pci_msi_count(dev->device);
224 DRM_DEBUG("MSI count = %d\n", msicount);
228 if (pci_alloc_msi(dev->device, &msicount) == 0) {
229 DRM_INFO("MSI enabled %d message(s)\n", msicount);
230 dev->msi_enabled = 1;
236 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
237 &dev->irqrid, RF_SHAREABLE);
242 dev->irq = (int) rman_get_start(dev->irqr);
244 DRM_SPININIT(&dev->dev_lock, "drmdev");
245 lwkt_serialize_init(&dev->irq_lock);
246 DRM_SPININIT(&dev->vbl_lock, "drmvbl");
247 DRM_SPININIT(&dev->drw_lock, "drmdrw");
249 id_entry = drm_find_description(dev->pci_vendor,
250 dev->pci_device, idlist);
251 dev->id_entry = id_entry;
253 return drm_load(dev);
256 int drm_detach(device_t kdev)
258 struct drm_device *dev;
260 dev = device_get_softc(kdev);
264 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid, dev->irqr);
267 if (dev->msi_enabled) {
268 pci_release_msi(dev->device);
269 DRM_INFO("MSI released\n");
277 #define DRM_DEV_NAME "drm"
280 devclass_t drm_devclass;
282 drm_pci_id_list_t *drm_find_description(int vendor, int device,
283 drm_pci_id_list_t *idlist)
287 for (i = 0; idlist[i].vendor != 0; i++) {
288 if ((idlist[i].vendor == vendor) &&
289 ((idlist[i].device == device) ||
290 (idlist[i].device == 0))) {
297 static int drm_firstopen(struct drm_device *dev)
299 drm_local_map_t *map;
302 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
304 /* prebuild the SAREA */
305 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
306 _DRM_CONTAINS_LOCK, &map);
310 if (dev->driver->firstopen)
311 dev->driver->firstopen(dev);
315 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
316 i = drm_dma_setup(dev);
321 for (i = 0; i < DRM_HASH_SIZE; i++) {
322 dev->magiclist[i].head = NULL;
323 dev->magiclist[i].tail = NULL;
326 dev->lock.lock_queue = 0;
327 dev->irq_enabled = 0;
328 dev->context_flag = 0;
329 dev->last_context = 0;
332 dev->buf_sigio = NULL;
339 static int drm_lastclose(struct drm_device *dev)
341 drm_magic_entry_t *pt, *next;
342 drm_local_map_t *map, *mapsave;
345 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
349 if (dev->driver->lastclose != NULL)
350 dev->driver->lastclose(dev);
352 if (dev->irq_enabled)
353 drm_irq_uninstall(dev);
356 free(dev->unique, DRM_MEM_DRIVER);
361 for (i = 0; i < DRM_HASH_SIZE; i++) {
362 for (pt = dev->magiclist[i].head; pt; pt = next) {
364 free(pt, DRM_MEM_MAGIC);
366 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
370 drm_drawable_free_all(dev);
373 /* Clear AGP information */
375 drm_agp_mem_t *entry;
376 drm_agp_mem_t *nexte;
378 /* Remove AGP resources, but leave dev->agp intact until
379 * drm_unload is called.
381 for (entry = dev->agp->memory; entry; entry = nexte) {
384 drm_agp_unbind_memory(entry->handle);
385 drm_agp_free_memory(entry->handle);
386 free(entry, DRM_MEM_AGPLISTS);
388 dev->agp->memory = NULL;
390 if (dev->agp->acquired)
391 drm_agp_release(dev);
393 dev->agp->acquired = 0;
394 dev->agp->enabled = 0;
396 if (dev->sg != NULL) {
397 drm_sg_cleanup(dev->sg);
401 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
402 if (!(map->flags & _DRM_DRIVER))
406 drm_dma_takedown(dev);
407 if (dev->lock.hw_lock) {
408 dev->lock.hw_lock = NULL; /* SHM removed */
409 dev->lock.file_priv = NULL;
410 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
416 static int drm_load(struct drm_device *dev)
422 TAILQ_INIT(&dev->maplist);
425 drm_sysctl_init(dev);
426 TAILQ_INIT(&dev->files);
429 dev->types[0] = _DRM_STAT_LOCK;
430 dev->types[1] = _DRM_STAT_OPENS;
431 dev->types[2] = _DRM_STAT_CLOSES;
432 dev->types[3] = _DRM_STAT_IOCTLS;
433 dev->types[4] = _DRM_STAT_LOCKS;
434 dev->types[5] = _DRM_STAT_UNLOCKS;
436 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
437 atomic_set(&dev->counts[i], 0);
439 if (dev->driver->load != NULL) {
441 /* Shared code returns -errno. */
442 retcode = -dev->driver->load(dev,
443 dev->id_entry->driver_private);
444 pci_enable_busmaster(dev->device);
450 if (drm_core_has_AGP(dev)) {
451 if (drm_device_is_agp(dev))
452 dev->agp = drm_agp_init();
453 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
455 DRM_ERROR("Card isn't AGP, or couldn't initialize "
460 if (dev->agp != NULL) {
461 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
462 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
467 retcode = drm_ctxbitmap_init(dev);
469 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
473 DRM_INFO("Initialized %s %d.%d.%d %s\n",
477 dev->driver->patchlevel,
483 drm_sysctl_cleanup(dev);
487 destroy_dev(dev->devnode);
489 DRM_SPINUNINIT(&dev->drw_lock);
490 DRM_SPINUNINIT(&dev->vbl_lock);
491 DRM_SPINUNINIT(&dev->dev_lock);
496 static void drm_unload(struct drm_device *dev)
502 drm_sysctl_cleanup(dev);
503 destroy_dev(dev->devnode);
505 drm_ctxbitmap_cleanup(dev);
507 if (dev->agp && dev->agp->mtrr) {
508 int __unused retcode;
510 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
511 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
512 DRM_DEBUG("mtrr_del = %d", retcode);
515 drm_vblank_cleanup(dev);
521 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
522 * worried about resource consumption while the DRM is inactive (between
523 * lastclose and firstopen or unload) because these aren't actually
524 * taking up KVA, just keeping the PCI resource allocated.
526 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
527 if (dev->pcir[i] == NULL)
529 bus_release_resource(dev->device, SYS_RES_MEMORY,
530 dev->pcirid[i], dev->pcir[i]);
535 free(dev->agp, DRM_MEM_AGPLISTS);
539 if (dev->driver->unload != NULL) {
541 dev->driver->unload(dev);
547 pci_disable_busmaster(dev->device);
549 DRM_SPINUNINIT(&dev->drw_lock);
550 DRM_SPINUNINIT(&dev->vbl_lock);
551 DRM_SPINUNINIT(&dev->dev_lock);
554 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
556 struct drm_version *version = data;
559 #define DRM_COPY( name, value ) \
560 len = strlen( value ); \
561 if ( len > name##_len ) len = name##_len; \
562 name##_len = strlen( value ); \
563 if ( len && name ) { \
564 if ( DRM_COPY_TO_USER( name, value, len ) ) \
568 version->version_major = dev->driver->major;
569 version->version_minor = dev->driver->minor;
570 version->version_patchlevel = dev->driver->patchlevel;
572 DRM_COPY(version->name, dev->driver->name);
573 DRM_COPY(version->date, dev->driver->date);
574 DRM_COPY(version->desc, dev->driver->desc);
579 int drm_open(struct dev_open_args *ap)
581 struct cdev *kdev = ap->a_head.a_dev;
582 int flags = ap->a_oflags;
584 struct thread *p = curthread;
585 struct drm_device *dev = NULL;
588 dev = DRIVER_SOFTC(minor(kdev));
590 DRM_DEBUG("open_count = %d\n", dev->open_count);
592 retcode = drm_open_helper(kdev, flags, fmt, p, dev);
595 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
597 device_busy(dev->device);
598 if (!dev->open_count++)
599 retcode = drm_firstopen(dev);
606 int drm_close(struct dev_close_args *ap)
608 struct cdev *kdev = ap->a_head.a_dev;
609 struct drm_file *file_priv;
610 struct drm_device *dev;
613 dev = DRIVER_SOFTC(minor(kdev));
614 file_priv = drm_find_file_by_proc(dev, curthread);
616 DRM_DEBUG("open_count = %d\n", dev->open_count);
620 if (--file_priv->refs != 0)
623 if (dev->driver->preclose != NULL)
624 dev->driver->preclose(dev, file_priv);
626 /* ========================================================
627 * Begin inline drm_release
630 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
631 DRM_CURRENTPID, (long)dev->device, dev->open_count);
633 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
634 && dev->lock.file_priv == file_priv) {
635 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
637 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
638 if (dev->driver->reclaim_buffers_locked != NULL)
639 dev->driver->reclaim_buffers_locked(dev, file_priv);
641 drm_lock_free(&dev->lock,
642 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
644 /* FIXME: may require heavy-handed reset of
645 hardware at this point, possibly
646 processed via a callback to the X
648 } else if (dev->driver->reclaim_buffers_locked != NULL &&
649 dev->lock.hw_lock != NULL) {
650 /* The lock is required to reclaim buffers */
652 if (!dev->lock.hw_lock) {
653 /* Device has been unregistered */
657 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
658 dev->lock.file_priv = file_priv;
659 dev->lock.lock_time = jiffies;
660 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
661 break; /* Got lock */
665 tsleep_interlock((void *)&dev->lock.lock_queue);
667 retcode = tsleep((void *)&dev->lock.lock_queue,
668 PCATCH, "drmlk2", 0);
675 dev->driver->reclaim_buffers_locked(dev, file_priv);
676 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
680 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
681 !dev->driver->reclaim_buffers_locked)
682 drm_reclaim_buffers(dev, file_priv);
684 funsetown(dev->buf_sigio);
686 if (dev->driver->postclose != NULL)
687 dev->driver->postclose(dev, file_priv);
688 TAILQ_REMOVE(&dev->files, file_priv, link);
689 free(file_priv, DRM_MEM_FILES);
691 /* ========================================================
692 * End inline drm_release
695 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
696 device_unbusy(dev->device);
697 if (--dev->open_count == 0) {
698 retcode = drm_lastclose(dev);
706 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
708 int drm_ioctl(struct dev_ioctl_args *ap)
710 struct cdev *kdev = ap->a_head.a_dev;
711 u_long cmd = ap->a_cmd;
712 caddr_t data = ap->a_data;
713 struct thread *p = curthread;
714 struct drm_device *dev = drm_get_device_from_kdev(kdev);
716 drm_ioctl_desc_t *ioctl;
717 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
718 int nr = DRM_IOCTL_NR(cmd);
719 int is_driver_ioctl = 0;
720 struct drm_file *file_priv;
722 file_priv = drm_find_file_by_proc(dev, p);
724 DRM_ERROR("can't find authenticator\n");
728 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
729 ++file_priv->ioctl_count;
731 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
732 DRM_CURRENTPID, cmd, nr, (long)dev->device,
733 file_priv->authenticated);
741 return fsetown(*(int *)data, &dev->buf_sigio);
744 *(int *) data = fgetown(dev->buf_sigio);
748 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
749 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
753 ioctl = &drm_ioctls[nr];
754 /* It's not a core DRM ioctl, try driver-specific. */
755 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
756 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
757 nr -= DRM_COMMAND_BASE;
758 if (nr > dev->driver->max_ioctl) {
759 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
760 nr, dev->driver->max_ioctl);
763 ioctl = &dev->driver->ioctls[nr];
769 DRM_DEBUG("no function\n");
773 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
774 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
775 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
778 if (is_driver_ioctl) {
780 /* shared code returns -errno */
781 retcode = -func(dev, data, file_priv);
784 retcode = func(dev, data, file_priv);
788 DRM_DEBUG(" returning %d\n", retcode);
793 drm_local_map_t *drm_getsarea(struct drm_device *dev)
795 drm_local_map_t *map;
797 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
798 TAILQ_FOREACH(map, &dev->maplist, link) {
799 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
808 #include <sys/sysproto.h>
810 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
812 #define LINUX_IOCTL_DRM_MIN 0x6400
813 #define LINUX_IOCTL_DRM_MAX 0x64ff
815 static linux_ioctl_function_t drm_linux_ioctl;
816 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
817 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
819 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
820 linux_ioctl_register_handler, &drm_handler);
821 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
822 linux_ioctl_unregister_handler, &drm_handler);
824 /* The bits for in/out are switched on Linux */
825 #define LINUX_IOC_IN IOC_OUT
826 #define LINUX_IOC_OUT IOC_IN
829 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
834 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
835 if (cmd & LINUX_IOC_IN)
837 if (cmd & LINUX_IOC_OUT)
838 args->cmd |= IOC_OUT;
840 error = ioctl(p, (struct ioctl_args *)args);
844 #endif /* DRM_LINUX */