Lines Matching +full:b +full:- +full:facing
35 #include <linux/dma-fence.h>
70 * The deprecated ->load callback must be called after the driver is in drm_dev_needs_global_mutex()
75 if (dev->driver->load || dev->driver->unload) in drm_dev_needs_global_mutex()
84 if (dev->driver->lastclose) in drm_dev_needs_global_mutex()
110 * For the driver-side event interface see drm_event_reserve_init() and
115 * function, modern drivers should use one of the provided memory-manager
116 * specific implementations. For GEM-based drivers this is drm_gem_mmap(), and
140 * For driver-private IOCTL handling see the more detailed discussion in
145 * drm_file_alloc - allocate file context
157 struct drm_device *dev = minor->dev; in drm_file_alloc()
163 return ERR_PTR(-ENOMEM); in drm_file_alloc()
165 file->pid = get_pid(task_pid(current)); in drm_file_alloc()
166 file->minor = minor; in drm_file_alloc()
169 file->authenticated = capable(CAP_SYS_ADMIN); in drm_file_alloc()
171 INIT_LIST_HEAD(&file->lhead); in drm_file_alloc()
172 INIT_LIST_HEAD(&file->fbs); in drm_file_alloc()
173 mutex_init(&file->fbs_lock); in drm_file_alloc()
174 INIT_LIST_HEAD(&file->blobs); in drm_file_alloc()
175 INIT_LIST_HEAD(&file->pending_event_list); in drm_file_alloc()
176 INIT_LIST_HEAD(&file->event_list); in drm_file_alloc()
177 init_waitqueue_head(&file->event_wait); in drm_file_alloc()
178 file->event_space = 4096; /* set aside 4k for event buffer */ in drm_file_alloc()
180 spin_lock_init(&file->master_lookup_lock); in drm_file_alloc()
181 mutex_init(&file->event_read_lock); in drm_file_alloc()
189 drm_prime_init_file_private(&file->prime); in drm_file_alloc()
191 if (dev->driver->open) { in drm_file_alloc()
192 ret = dev->driver->open(dev, file); in drm_file_alloc()
200 drm_prime_destroy_file_private(&file->prime); in drm_file_alloc()
205 put_pid(file->pid); in drm_file_alloc()
213 struct drm_device *dev = file_priv->minor->dev; in drm_events_release()
217 spin_lock_irqsave(&dev->event_lock, flags); in drm_events_release()
220 list_for_each_entry_safe(e, et, &file_priv->pending_event_list, in drm_events_release()
222 list_del(&e->pending_link); in drm_events_release()
223 e->file_priv = NULL; in drm_events_release()
227 list_for_each_entry_safe(e, et, &file_priv->event_list, link) { in drm_events_release()
228 list_del(&e->link); in drm_events_release()
232 spin_unlock_irqrestore(&dev->event_lock, flags); in drm_events_release()
236 * drm_file_free - free file context
243 * If NULL is passed, this is a no-op.
255 dev = file->minor->dev; in drm_file_free()
258 current->comm, task_pid_nr(current), in drm_file_free()
259 (long)old_encode_dev(file->minor->kdev->devt), in drm_file_free()
260 atomic_read(&dev->open_count)); in drm_file_free()
263 dev->driver->preclose) in drm_file_free()
264 dev->driver->preclose(dev, file); in drm_file_free()
267 drm_legacy_lock_release(dev, file->filp); in drm_file_free()
290 if (dev->driver->postclose) in drm_file_free()
291 dev->driver->postclose(dev, file); in drm_file_free()
293 drm_prime_destroy_file_private(&file->prime); in drm_file_free()
295 WARN_ON(!list_empty(&file->event_list)); in drm_file_free()
297 put_pid(file->pid); in drm_file_free()
303 struct drm_file *file_priv = filp->private_data; in drm_close_helper()
304 struct drm_device *dev = file_priv->minor->dev; in drm_close_helper()
306 mutex_lock(&dev->filelist_mutex); in drm_close_helper()
307 list_del(&file_priv->lhead); in drm_close_helper()
308 mutex_unlock(&dev->filelist_mutex); in drm_close_helper()
316 * \return non-zero if the DRI will run on this CPU, or zero otherwise.
330 * \param minor acquired minor-object.
338 struct drm_device *dev = minor->dev; in drm_open_helper()
342 if (filp->f_flags & O_EXCL) in drm_open_helper()
343 return -EBUSY; /* No exclusive opens */ in drm_open_helper()
345 return -EINVAL; in drm_open_helper()
346 if (dev->switch_power_state != DRM_SWITCH_POWER_ON && in drm_open_helper()
347 dev->switch_power_state != DRM_SWITCH_POWER_DYNAMIC_OFF) in drm_open_helper()
348 return -EINVAL; in drm_open_helper()
350 DRM_DEBUG("comm=\"%s\", pid=%d, minor=%d\n", current->comm, in drm_open_helper()
351 task_pid_nr(current), minor->index); in drm_open_helper()
365 filp->private_data = priv; in drm_open_helper()
366 filp->f_mode |= FMODE_UNSIGNED_OFFSET; in drm_open_helper()
367 priv->filp = filp; in drm_open_helper()
369 mutex_lock(&dev->filelist_mutex); in drm_open_helper()
370 list_add(&priv->lhead, &dev->filelist); in drm_open_helper()
371 mutex_unlock(&dev->filelist_mutex); in drm_open_helper()
377 if (!dev->hose) { in drm_open_helper()
382 dev->hose = pci_dev->sysdata; in drm_open_helper()
385 if (!dev->hose) { in drm_open_helper()
386 struct pci_bus *b = list_entry(pci_root_buses.next, in drm_open_helper() local
388 if (b) in drm_open_helper()
389 dev->hose = b->sysdata; in drm_open_helper()
398 * drm_open - open method for DRM file
403 * It looks up the correct DRM device and instantiates all the per-file
421 dev = minor->dev; in drm_open()
425 if (!atomic_fetch_inc(&dev->open_count)) in drm_open()
428 /* share address_space across all char-devs of a single device */ in drm_open()
429 filp->f_mapping = dev->anon_inode->i_mapping; in drm_open()
448 atomic_dec(&dev->open_count); in drm_open()
460 if (dev->driver->lastclose) in drm_lastclose()
461 dev->driver->lastclose(dev); in drm_lastclose()
471 * drm_release - release method for DRM file
486 struct drm_file *file_priv = filp->private_data; in drm_release()
487 struct drm_minor *minor = file_priv->minor; in drm_release()
488 struct drm_device *dev = minor->dev; in drm_release()
493 DRM_DEBUG("open_count = %d\n", atomic_read(&dev->open_count)); in drm_release()
497 if (atomic_dec_and_test(&dev->open_count)) in drm_release()
510 * drm_release_noglobal - release method for DRM file
526 struct drm_file *file_priv = filp->private_data; in drm_release_noglobal()
527 struct drm_minor *minor = file_priv->minor; in drm_release_noglobal()
528 struct drm_device *dev = minor->dev; in drm_release_noglobal()
532 if (atomic_dec_and_mutex_lock(&dev->open_count, &drm_global_mutex)) { in drm_release_noglobal()
544 * drm_read - read method for DRM file
572 struct drm_file *file_priv = filp->private_data; in drm_read()
573 struct drm_device *dev = file_priv->minor->dev; in drm_read()
576 ret = mutex_lock_interruptible(&file_priv->event_read_lock); in drm_read()
583 spin_lock_irq(&dev->event_lock); in drm_read()
584 if (!list_empty(&file_priv->event_list)) { in drm_read()
585 e = list_first_entry(&file_priv->event_list, in drm_read()
587 file_priv->event_space += e->event->length; in drm_read()
588 list_del(&e->link); in drm_read()
590 spin_unlock_irq(&dev->event_lock); in drm_read()
596 if (filp->f_flags & O_NONBLOCK) { in drm_read()
597 ret = -EAGAIN; in drm_read()
601 mutex_unlock(&file_priv->event_read_lock); in drm_read()
602 ret = wait_event_interruptible(file_priv->event_wait, in drm_read()
603 !list_empty(&file_priv->event_list)); in drm_read()
605 ret = mutex_lock_interruptible(&file_priv->event_read_lock); in drm_read()
609 unsigned length = e->event->length; in drm_read()
611 if (length > count - ret) { in drm_read()
613 spin_lock_irq(&dev->event_lock); in drm_read()
614 file_priv->event_space -= length; in drm_read()
615 list_add(&e->link, &file_priv->event_list); in drm_read()
616 spin_unlock_irq(&dev->event_lock); in drm_read()
617 wake_up_interruptible_poll(&file_priv->event_wait, in drm_read()
622 if (copy_to_user(buffer + ret, e->event, length)) { in drm_read()
624 ret = -EFAULT; in drm_read()
632 mutex_unlock(&file_priv->event_read_lock); in drm_read()
639 * drm_poll - poll method for DRM file
656 struct drm_file *file_priv = filp->private_data; in drm_poll()
659 poll_wait(filp, &file_priv->event_wait, wait); in drm_poll()
661 if (!list_empty(&file_priv->event_list)) in drm_poll()
669 * drm_event_reserve_init_locked - init a DRM event and reserve space for it
697 if (file_priv->event_space < e->length) in drm_event_reserve_init_locked()
698 return -ENOMEM; in drm_event_reserve_init_locked()
700 file_priv->event_space -= e->length; in drm_event_reserve_init_locked()
702 p->event = e; in drm_event_reserve_init_locked()
703 list_add(&p->pending_link, &file_priv->pending_event_list); in drm_event_reserve_init_locked()
704 p->file_priv = file_priv; in drm_event_reserve_init_locked()
711 * drm_event_reserve_init - init a DRM event and reserve space for it
742 spin_lock_irqsave(&dev->event_lock, flags); in drm_event_reserve_init()
744 spin_unlock_irqrestore(&dev->event_lock, flags); in drm_event_reserve_init()
751 * drm_event_cancel_free - free a DRM event and release its space
764 spin_lock_irqsave(&dev->event_lock, flags); in drm_event_cancel_free()
765 if (p->file_priv) { in drm_event_cancel_free()
766 p->file_priv->event_space += p->event->length; in drm_event_cancel_free()
767 list_del(&p->pending_link); in drm_event_cancel_free()
769 spin_unlock_irqrestore(&dev->event_lock, flags); in drm_event_cancel_free()
771 if (p->fence) in drm_event_cancel_free()
772 dma_fence_put(p->fence); in drm_event_cancel_free()
779 * drm_send_event_locked - send DRM event to file descriptor
794 assert_spin_locked(&dev->event_lock); in drm_send_event_locked()
796 if (e->completion) { in drm_send_event_locked()
797 complete_all(e->completion); in drm_send_event_locked()
798 e->completion_release(e->completion); in drm_send_event_locked()
799 e->completion = NULL; in drm_send_event_locked()
802 if (e->fence) { in drm_send_event_locked()
803 dma_fence_signal(e->fence); in drm_send_event_locked()
804 dma_fence_put(e->fence); in drm_send_event_locked()
807 if (!e->file_priv) { in drm_send_event_locked()
812 list_del(&e->pending_link); in drm_send_event_locked()
813 list_add_tail(&e->link, in drm_send_event_locked()
814 &e->file_priv->event_list); in drm_send_event_locked()
815 wake_up_interruptible_poll(&e->file_priv->event_wait, in drm_send_event_locked()
821 * drm_send_event - send DRM event to file descriptor
839 spin_lock_irqsave(&dev->event_lock, irqflags); in drm_send_event()
841 spin_unlock_irqrestore(&dev->event_lock, irqflags); in drm_send_event()
846 * mock_drm_getfile - Create a new struct file for the drm device
854 * to userspace facing functions as an internal/anonymous client.
861 struct drm_device *dev = minor->dev; in mock_drm_getfile()
869 file = anon_inode_getfile("drm", dev->driver->fops, priv, flags); in mock_drm_getfile()
876 file->f_mapping = dev->anon_inode->i_mapping; in mock_drm_getfile()
879 priv->filp = file; in mock_drm_getfile()
902 offset = (pgoff << PAGE_SHIFT) & (huge_size - 1); in drm_addr_inflate()
905 if ((addr & (huge_size - 1)) == offset) in drm_addr_inflate()
908 inflated_len = len + huge_size - PAGE_SIZE; in drm_addr_inflate()
914 inflated_addr = current->mm->get_unmapped_area(NULL, 0, inflated_len, in drm_addr_inflate()
921 inflated_offset = inflated_addr & (huge_size - 1); in drm_addr_inflate()
922 inflated_addr += offset - inflated_offset; in drm_addr_inflate()
926 if (inflated_addr > TASK_SIZE - len) in drm_addr_inflate()
933 * drm_get_unmapped_area() - Get an unused user-space virtual memory area
936 * @uaddr: Start address suggested by user-space.
944 * This function attempts to find an unused user-space virtual memory area
950 * (system- or coherent memory). Adapted from shmem_get_unmapped_area.
952 * Return: aligned user-space address.
964 return -ENOMEM; in drm_get_unmapped_area()
967 * @pgoff is the file page-offset the huge page boundaries of in drm_get_unmapped_area()
977 pgoff -= node->vm_node.start; in drm_get_unmapped_area()
980 addr = current->mm->get_unmapped_area(file, uaddr, len, pgoff, flags); in drm_get_unmapped_area()
985 if (addr > TASK_SIZE - len) in drm_get_unmapped_area()
1015 return current->mm->get_unmapped_area(file, uaddr, len, pgoff, flags); in drm_get_unmapped_area()