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 static 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;
161 vendor = pci_get_vendor(kdev);
162 device = pci_get_device(kdev);
164 if (pci_get_class(kdev) != PCIC_DISPLAY
165 || pci_get_subclass(kdev) != PCIS_DISPLAY_VGA)
168 id_entry = drm_find_description(vendor, device, idlist);
169 if (id_entry != NULL) {
170 if (!device_get_desc(kdev)) {
171 DRM_DEBUG("desc : %s\n", device_get_desc(kdev));
172 device_set_desc(kdev, id_entry->name);
180 int drm_attach(device_t kdev, drm_pci_id_list_t *idlist)
182 struct drm_device *dev;
183 drm_pci_id_list_t *id_entry;
189 unit = device_get_unit(kdev);
190 dev = device_get_softc(kdev);
192 if (!strcmp(device_get_name(kdev), "drmsub"))
193 dev->device = device_get_parent(kdev);
197 dev->devnode = make_dev(&drm_cdevsw, unit, DRM_DEV_UID, DRM_DEV_GID,
198 DRM_DEV_MODE, "dri/card%d", unit);
201 dev->pci_bus = pci_get_bus(dev->device);
202 dev->pci_slot = pci_get_slot(dev->device);
203 dev->pci_func = pci_get_function(dev->device);
205 dev->pci_vendor = pci_get_vendor(dev->device);
206 dev->pci_device = pci_get_device(dev->device);
208 if (drm_core_check_feature(dev, DRIVER_HAVE_IRQ)) {
210 !drm_msi_is_blacklisted(dev->pci_vendor, dev->pci_device)) {
212 msicount = pci_msi_count(dev->device);
213 DRM_DEBUG("MSI count = %d\n", msicount);
217 if (pci_alloc_msi(dev->device, &msicount) == 0) {
218 DRM_INFO("MSI enabled %d message(s)\n",
220 dev->msi_enabled = 1;
226 dev->irqr = bus_alloc_resource_any(dev->device, SYS_RES_IRQ,
227 &dev->irqrid, RF_SHAREABLE);
232 dev->irq = (int) rman_get_start(dev->irqr);
235 DRM_SPININIT(&dev->dev_lock, "drmdev");
236 lwkt_serialize_init(&dev->irq_lock);
237 DRM_SPININIT(&dev->vbl_lock, "drmvbl");
238 DRM_SPININIT(&dev->drw_lock, "drmdrw");
240 id_entry = drm_find_description(dev->pci_vendor,
241 dev->pci_device, idlist);
242 dev->id_entry = id_entry;
244 return drm_load(dev);
247 int drm_detach(device_t kdev)
249 struct drm_device *dev;
251 dev = device_get_softc(kdev);
256 bus_release_resource(dev->device, SYS_RES_IRQ, dev->irqrid,
260 if (dev->msi_enabled) {
261 pci_release_msi(dev->device);
262 DRM_INFO("MSI released\n");
271 #define DRM_DEV_NAME "drm"
274 devclass_t drm_devclass;
276 drm_pci_id_list_t *drm_find_description(int vendor, int device,
277 drm_pci_id_list_t *idlist)
281 for (i = 0; idlist[i].vendor != 0; i++) {
282 if ((idlist[i].vendor == vendor) &&
283 ((idlist[i].device == device) ||
284 (idlist[i].device == 0))) {
291 static int drm_firstopen(struct drm_device *dev)
293 drm_local_map_t *map;
296 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
298 /* prebuild the SAREA */
299 i = drm_addmap(dev, 0, SAREA_MAX, _DRM_SHM,
300 _DRM_CONTAINS_LOCK, &map);
304 if (dev->driver->firstopen)
305 dev->driver->firstopen(dev);
309 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA)) {
310 i = drm_dma_setup(dev);
315 for (i = 0; i < DRM_HASH_SIZE; i++) {
316 dev->magiclist[i].head = NULL;
317 dev->magiclist[i].tail = NULL;
320 dev->lock.lock_queue = 0;
321 dev->irq_enabled = 0;
322 dev->context_flag = 0;
323 dev->last_context = 0;
326 dev->buf_sigio = NULL;
333 static int drm_lastclose(struct drm_device *dev)
335 drm_magic_entry_t *pt, *next;
336 drm_local_map_t *map, *mapsave;
339 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
343 if (dev->driver->lastclose != NULL)
344 dev->driver->lastclose(dev);
346 if (dev->irq_enabled)
347 drm_irq_uninstall(dev);
350 free(dev->unique, DRM_MEM_DRIVER);
355 for (i = 0; i < DRM_HASH_SIZE; i++) {
356 for (pt = dev->magiclist[i].head; pt; pt = next) {
358 free(pt, DRM_MEM_MAGIC);
360 dev->magiclist[i].head = dev->magiclist[i].tail = NULL;
364 drm_drawable_free_all(dev);
367 /* Clear AGP information */
369 drm_agp_mem_t *entry;
370 drm_agp_mem_t *nexte;
372 /* Remove AGP resources, but leave dev->agp intact until
373 * drm_unload is called.
375 for (entry = dev->agp->memory; entry; entry = nexte) {
378 drm_agp_unbind_memory(entry->handle);
379 drm_agp_free_memory(entry->handle);
380 free(entry, DRM_MEM_AGPLISTS);
382 dev->agp->memory = NULL;
384 if (dev->agp->acquired)
385 drm_agp_release(dev);
387 dev->agp->acquired = 0;
388 dev->agp->enabled = 0;
390 if (dev->sg != NULL) {
391 drm_sg_cleanup(dev->sg);
395 TAILQ_FOREACH_MUTABLE(map, &dev->maplist, link, mapsave) {
396 if (!(map->flags & _DRM_DRIVER))
400 drm_dma_takedown(dev);
401 if (dev->lock.hw_lock) {
402 dev->lock.hw_lock = NULL; /* SHM removed */
403 dev->lock.file_priv = NULL;
404 DRM_WAKEUP_INT((void *)&dev->lock.lock_queue);
410 static int drm_load(struct drm_device *dev)
416 TAILQ_INIT(&dev->maplist);
419 drm_sysctl_init(dev);
420 TAILQ_INIT(&dev->files);
423 dev->types[0] = _DRM_STAT_LOCK;
424 dev->types[1] = _DRM_STAT_OPENS;
425 dev->types[2] = _DRM_STAT_CLOSES;
426 dev->types[3] = _DRM_STAT_IOCTLS;
427 dev->types[4] = _DRM_STAT_LOCKS;
428 dev->types[5] = _DRM_STAT_UNLOCKS;
430 for (i = 0; i < DRM_ARRAY_SIZE(dev->counts); i++)
431 atomic_set(&dev->counts[i], 0);
433 if (dev->driver->load != NULL) {
435 /* Shared code returns -errno. */
436 retcode = -dev->driver->load(dev,
437 dev->id_entry->driver_private);
438 pci_enable_busmaster(dev->device);
444 if (drm_core_has_AGP(dev)) {
445 if (drm_device_is_agp(dev))
446 dev->agp = drm_agp_init();
447 if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP) &&
449 DRM_ERROR("Card isn't AGP, or couldn't initialize "
454 if (dev->agp != NULL) {
455 if (drm_mtrr_add(dev->agp->info.ai_aperture_base,
456 dev->agp->info.ai_aperture_size, DRM_MTRR_WC) == 0)
461 retcode = drm_ctxbitmap_init(dev);
463 DRM_ERROR("Cannot allocate memory for context bitmap.\n");
467 DRM_INFO("Initialized %s %d.%d.%d %s\n",
471 dev->driver->patchlevel,
477 drm_sysctl_cleanup(dev);
481 destroy_dev(dev->devnode);
483 DRM_SPINUNINIT(&dev->drw_lock);
484 DRM_SPINUNINIT(&dev->vbl_lock);
485 DRM_SPINUNINIT(&dev->dev_lock);
490 static void drm_unload(struct drm_device *dev)
496 drm_sysctl_cleanup(dev);
497 destroy_dev(dev->devnode);
499 drm_ctxbitmap_cleanup(dev);
501 if (dev->agp && dev->agp->mtrr) {
502 int __unused retcode;
504 retcode = drm_mtrr_del(0, dev->agp->info.ai_aperture_base,
505 dev->agp->info.ai_aperture_size, DRM_MTRR_WC);
506 DRM_DEBUG("mtrr_del = %d", retcode);
509 drm_vblank_cleanup(dev);
515 /* Clean up PCI resources allocated by drm_bufs.c. We're not really
516 * worried about resource consumption while the DRM is inactive (between
517 * lastclose and firstopen or unload) because these aren't actually
518 * taking up KVA, just keeping the PCI resource allocated.
520 for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
521 if (dev->pcir[i] == NULL)
523 bus_release_resource(dev->device, SYS_RES_MEMORY,
524 dev->pcirid[i], dev->pcir[i]);
529 free(dev->agp, DRM_MEM_AGPLISTS);
533 if (dev->driver->unload != NULL) {
535 dev->driver->unload(dev);
541 pci_disable_busmaster(dev->device);
543 DRM_SPINUNINIT(&dev->drw_lock);
544 DRM_SPINUNINIT(&dev->vbl_lock);
545 DRM_SPINUNINIT(&dev->dev_lock);
548 int drm_version(struct drm_device *dev, void *data, struct drm_file *file_priv)
550 struct drm_version *version = data;
553 #define DRM_COPY( name, value ) \
554 len = strlen( value ); \
555 if ( len > name##_len ) len = name##_len; \
556 name##_len = strlen( value ); \
557 if ( len && name ) { \
558 if ( DRM_COPY_TO_USER( name, value, len ) ) \
562 version->version_major = dev->driver->major;
563 version->version_minor = dev->driver->minor;
564 version->version_patchlevel = dev->driver->patchlevel;
566 DRM_COPY(version->name, dev->driver->name);
567 DRM_COPY(version->date, dev->driver->date);
568 DRM_COPY(version->desc, dev->driver->desc);
573 int drm_open(struct dev_open_args *ap)
575 struct cdev *kdev = ap->a_head.a_dev;
576 int flags = ap->a_oflags;
578 struct thread *p = curthread;
579 struct drm_device *dev = NULL;
582 dev = DRIVER_SOFTC(minor(kdev));
584 DRM_DEBUG("open_count = %d\n", dev->open_count);
586 retcode = drm_open_helper(kdev, flags, fmt, p, dev);
589 atomic_inc(&dev->counts[_DRM_STAT_OPENS]);
591 device_busy(dev->device);
592 if (!dev->open_count++)
593 retcode = drm_firstopen(dev);
600 int drm_close(struct dev_close_args *ap)
602 struct cdev *kdev = ap->a_head.a_dev;
603 struct drm_file *file_priv;
604 struct drm_device *dev;
607 dev = DRIVER_SOFTC(minor(kdev));
608 file_priv = drm_find_file_by_proc(dev, curthread);
610 DRM_DEBUG("open_count = %d\n", dev->open_count);
614 if (--file_priv->refs != 0)
617 if (dev->driver->preclose != NULL)
618 dev->driver->preclose(dev, file_priv);
620 /* ========================================================
621 * Begin inline drm_release
624 DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
625 DRM_CURRENTPID, (long)dev->device, dev->open_count);
627 if (dev->lock.hw_lock && _DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)
628 && dev->lock.file_priv == file_priv) {
629 DRM_DEBUG("Process %d dead, freeing lock for context %d\n",
631 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
632 if (dev->driver->reclaim_buffers_locked != NULL)
633 dev->driver->reclaim_buffers_locked(dev, file_priv);
635 drm_lock_free(&dev->lock,
636 _DRM_LOCKING_CONTEXT(dev->lock.hw_lock->lock));
638 /* FIXME: may require heavy-handed reset of
639 hardware at this point, possibly
640 processed via a callback to the X
642 } else if (dev->driver->reclaim_buffers_locked != NULL &&
643 dev->lock.hw_lock != NULL) {
644 /* The lock is required to reclaim buffers */
646 if (!dev->lock.hw_lock) {
647 /* Device has been unregistered */
651 if (drm_lock_take(&dev->lock, DRM_KERNEL_CONTEXT)) {
652 dev->lock.file_priv = file_priv;
653 dev->lock.lock_time = jiffies;
654 atomic_inc(&dev->counts[_DRM_STAT_LOCKS]);
655 break; /* Got lock */
658 tsleep_interlock((void *)&dev->lock.lock_queue, PCATCH);
660 retcode = tsleep((void *)&dev->lock.lock_queue,
661 PCATCH | PINTERLOCKED, "drmlk2", 0);
667 dev->driver->reclaim_buffers_locked(dev, file_priv);
668 drm_lock_free(&dev->lock, DRM_KERNEL_CONTEXT);
672 if (drm_core_check_feature(dev, DRIVER_HAVE_DMA) &&
673 !dev->driver->reclaim_buffers_locked)
674 drm_reclaim_buffers(dev, file_priv);
676 funsetown(dev->buf_sigio);
678 if (dev->driver->postclose != NULL)
679 dev->driver->postclose(dev, file_priv);
680 TAILQ_REMOVE(&dev->files, file_priv, link);
681 free(file_priv, DRM_MEM_FILES);
683 /* ========================================================
684 * End inline drm_release
687 atomic_inc(&dev->counts[_DRM_STAT_CLOSES]);
688 device_unbusy(dev->device);
689 if (--dev->open_count == 0) {
690 retcode = drm_lastclose(dev);
698 /* drm_ioctl is called whenever a process performs an ioctl on /dev/drm.
700 int drm_ioctl(struct dev_ioctl_args *ap)
702 struct cdev *kdev = ap->a_head.a_dev;
703 u_long cmd = ap->a_cmd;
704 caddr_t data = ap->a_data;
705 struct thread *p = curthread;
706 struct drm_device *dev = drm_get_device_from_kdev(kdev);
708 drm_ioctl_desc_t *ioctl;
709 int (*func)(struct drm_device *dev, void *data, struct drm_file *file_priv);
710 int nr = DRM_IOCTL_NR(cmd);
711 int is_driver_ioctl = 0;
712 struct drm_file *file_priv;
714 file_priv = drm_find_file_by_proc(dev, p);
716 DRM_ERROR("can't find authenticator\n");
720 atomic_inc(&dev->counts[_DRM_STAT_IOCTLS]);
721 ++file_priv->ioctl_count;
723 DRM_DEBUG("pid=%d, cmd=0x%02lx, nr=0x%02x, dev 0x%lx, auth=%d\n",
724 DRM_CURRENTPID, cmd, nr, (long)dev->device,
725 file_priv->authenticated);
733 return fsetown(*(int *)data, &dev->buf_sigio);
736 *(int *) data = fgetown(dev->buf_sigio);
740 if (IOCGROUP(cmd) != DRM_IOCTL_BASE) {
741 DRM_DEBUG("Bad ioctl group 0x%x\n", (int)IOCGROUP(cmd));
745 ioctl = &drm_ioctls[nr];
746 /* It's not a core DRM ioctl, try driver-specific. */
747 if (ioctl->func == NULL && nr >= DRM_COMMAND_BASE) {
748 /* The array entries begin at DRM_COMMAND_BASE ioctl nr */
749 nr -= DRM_COMMAND_BASE;
750 if (nr > dev->driver->max_ioctl) {
751 DRM_DEBUG("Bad driver ioctl number, 0x%x (of 0x%x)\n",
752 nr, dev->driver->max_ioctl);
755 ioctl = &dev->driver->ioctls[nr];
761 DRM_DEBUG("no function\n");
765 if (((ioctl->flags & DRM_ROOT_ONLY) && !DRM_SUSER(p)) ||
766 ((ioctl->flags & DRM_AUTH) && !file_priv->authenticated) ||
767 ((ioctl->flags & DRM_MASTER) && !file_priv->master))
770 if (is_driver_ioctl) {
772 /* shared code returns -errno */
773 retcode = -func(dev, data, file_priv);
776 retcode = func(dev, data, file_priv);
780 DRM_DEBUG(" returning %d\n", retcode);
785 drm_local_map_t *drm_getsarea(struct drm_device *dev)
787 drm_local_map_t *map;
789 DRM_SPINLOCK_ASSERT(&dev->dev_lock);
790 TAILQ_FOREACH(map, &dev->maplist, link) {
791 if (map->type == _DRM_SHM && (map->flags & _DRM_CONTAINS_LOCK))
800 #include <sys/sysproto.h>
802 MODULE_DEPEND(DRIVER_NAME, linux, 1, 1, 1);
804 #define LINUX_IOCTL_DRM_MIN 0x6400
805 #define LINUX_IOCTL_DRM_MAX 0x64ff
807 static linux_ioctl_function_t drm_linux_ioctl;
808 static struct linux_ioctl_handler drm_handler = {drm_linux_ioctl,
809 LINUX_IOCTL_DRM_MIN, LINUX_IOCTL_DRM_MAX};
811 SYSINIT(drm_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
812 linux_ioctl_register_handler, &drm_handler);
813 SYSUNINIT(drm_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
814 linux_ioctl_unregister_handler, &drm_handler);
816 /* The bits for in/out are switched on Linux */
817 #define LINUX_IOC_IN IOC_OUT
818 #define LINUX_IOC_OUT IOC_IN
821 drm_linux_ioctl(DRM_STRUCTPROC *p, struct linux_ioctl_args* args)
826 args->cmd &= ~(LINUX_IOC_IN | LINUX_IOC_OUT);
827 if (cmd & LINUX_IOC_IN)
829 if (cmd & LINUX_IOC_OUT)
830 args->cmd |= IOC_OUT;
832 error = ioctl(p, (struct ioctl_args *)args);
836 #endif /* DRM_LINUX */