26 static struct urb *udl_get_urb_locked(struct udl_device *udl, long timeout);
28 static int udl_parse_vendor_descriptor(struct udl_device *udl)  in udl_parse_vendor_descriptor()  argument
30 	struct usb_device *udev = udl_to_usb_device(udl);  in udl_parse_vendor_descriptor()
73 				udl->sku_pixel_limit = max_area;  in udl_parse_vendor_descriptor()
97 int udl_select_std_channel(struct udl_device *udl)  in udl_select_std_channel()  argument
106 	struct usb_device *udev = udl_to_usb_device(udl);  in udl_select_std_channel()
124 	struct udl_device *udl = unode->dev;  in udl_urb_completion()  local
138 	urb->transfer_buffer_length = udl->urbs.size; /* reset to actual */  in udl_urb_completion()
140 	spin_lock_irqsave(&udl->urbs.lock, flags);  in udl_urb_completion()
141 	list_add_tail(&unode->entry, &udl->urbs.list);  in udl_urb_completion()
142 	udl->urbs.available++;  in udl_urb_completion()
143 	spin_unlock_irqrestore(&udl->urbs.lock, flags);  in udl_urb_completion()
145 	wake_up(&udl->urbs.sleep);  in udl_urb_completion()
150 	struct udl_device *udl = to_udl(dev);  in udl_free_urb_list()  local
157 	while (udl->urbs.count) {  in udl_free_urb_list()
158 		spin_lock_irq(&udl->urbs.lock);  in udl_free_urb_list()
159 		urb = udl_get_urb_locked(udl, MAX_SCHEDULE_TIMEOUT);  in udl_free_urb_list()
160 		udl->urbs.count--;  in udl_free_urb_list()
161 		spin_unlock_irq(&udl->urbs.lock);  in udl_free_urb_list()
166 		usb_free_coherent(urb->dev, udl->urbs.size,  in udl_free_urb_list()
172 	wake_up_all(&udl->urbs.sleep);  in udl_free_urb_list()
177 	struct udl_device *udl = to_udl(dev);  in udl_alloc_urb_list()  local
182 	struct usb_device *udev = udl_to_usb_device(udl);  in udl_alloc_urb_list()
184 	spin_lock_init(&udl->urbs.lock);  in udl_alloc_urb_list()
185 	INIT_LIST_HEAD(&udl->urbs.list);  in udl_alloc_urb_list()
186 	init_waitqueue_head(&udl->urbs.sleep);  in udl_alloc_urb_list()
187 	udl->urbs.count = 0;  in udl_alloc_urb_list()
188 	udl->urbs.available = 0;  in udl_alloc_urb_list()
191 	udl->urbs.size = size;  in udl_alloc_urb_list()
193 	while (udl->urbs.count * size < wanted_size) {  in udl_alloc_urb_list()
197 		unode->dev = udl;  in udl_alloc_urb_list()
224 		list_add_tail(&unode->entry, &udl->urbs.list);  in udl_alloc_urb_list()
226 		udl->urbs.count++;  in udl_alloc_urb_list()
227 		udl->urbs.available++;  in udl_alloc_urb_list()
230 	DRM_DEBUG("allocated %d %d byte urbs\n", udl->urbs.count, (int) size);  in udl_alloc_urb_list()
232 	return udl->urbs.count;  in udl_alloc_urb_list()
235 static struct urb *udl_get_urb_locked(struct udl_device *udl, long timeout)  in udl_get_urb_locked()  argument
239 	assert_spin_locked(&udl->urbs.lock);  in udl_get_urb_locked()
242 	if (!wait_event_lock_irq_timeout(udl->urbs.sleep,  in udl_get_urb_locked()
243 					 !udl->urbs.count ||  in udl_get_urb_locked()
244 					 !list_empty(&udl->urbs.list),  in udl_get_urb_locked()
245 					 udl->urbs.lock, timeout)) {  in udl_get_urb_locked()
247 			 udl->urbs.available);  in udl_get_urb_locked()
251 	if (!udl->urbs.count)  in udl_get_urb_locked()
254 	unode = list_first_entry(&udl->urbs.list, struct urb_node, entry);  in udl_get_urb_locked()
256 	udl->urbs.available--;  in udl_get_urb_locked()
264 	struct udl_device *udl = to_udl(dev);  in udl_get_urb()  local
267 	spin_lock_irq(&udl->urbs.lock);  in udl_get_urb()
268 	urb = udl_get_urb_locked(udl, GET_URB_TIMEOUT);  in udl_get_urb()
269 	spin_unlock_irq(&udl->urbs.lock);  in udl_get_urb()
275 	struct udl_device *udl = to_udl(dev);  in udl_submit_urb()  local
278 	if (WARN_ON(len > udl->urbs.size)) {  in udl_submit_urb()
295 	struct udl_device *udl = to_udl(dev);  in udl_sync_pending_urbs()  local
297 	spin_lock_irq(&udl->urbs.lock);  in udl_sync_pending_urbs()
299 	if (!wait_event_lock_irq_timeout(udl->urbs.sleep,  in udl_sync_pending_urbs()
300 					 udl->urbs.available == udl->urbs.count,  in udl_sync_pending_urbs()
301 					 udl->urbs.lock,  in udl_sync_pending_urbs()
304 	spin_unlock_irq(&udl->urbs.lock);  in udl_sync_pending_urbs()
307 int udl_init(struct udl_device *udl)  in udl_init()  argument
309 	struct drm_device *dev = &udl->drm;  in udl_init()
314 	udl->dmadev = usb_intf_get_dma_device(to_usb_interface(dev->dev));  in udl_init()
315 	if (!udl->dmadev)  in udl_init()
318 	mutex_init(&udl->gem_lock);  in udl_init()
320 	if (!udl_parse_vendor_descriptor(udl)) {  in udl_init()
326 	if (udl_select_std_channel(udl))  in udl_init()
344 	if (udl->urbs.count)  in udl_init()
346 	put_device(udl->dmadev);  in udl_init()
353 	struct udl_device *udl = to_udl(dev);  in udl_drop_usb()  local
356 	put_device(udl->dmadev);  in udl_drop_usb()
357 	udl->dmadev = NULL;  in udl_drop_usb()