89 	struct xillyusb_dev *xdev;  member
118 	struct xillyusb_dev *xdev;  member
487 *endpoint_alloc(struct xillyusb_dev *xdev,  in endpoint_alloc()  argument
516 	ep->xdev = xdev;  in endpoint_alloc()
548 	struct xillyusb_dev *xdev =  in cleanup_dev()  local
551 	if (xdev->in_ep)  in cleanup_dev()
552 		endpoint_dealloc(xdev->in_ep);  in cleanup_dev()
554 	if (xdev->msg_ep)  in cleanup_dev()
555 		endpoint_dealloc(xdev->msg_ep);  in cleanup_dev()
557 	if (xdev->workq)  in cleanup_dev()
558 		destroy_workqueue(xdev->workq);  in cleanup_dev()
560 	usb_put_dev(xdev->udev);  in cleanup_dev()
561 	kfree(xdev->channels); /* Argument may be NULL, and that's fine */  in cleanup_dev()
562 	kfree(xdev);  in cleanup_dev()
581 	struct xillyusb_dev *xdev = container_of(work, struct xillyusb_dev,  in wakeup_all()  local
584 	mutex_lock(&xdev->process_in_mutex);  in wakeup_all()
586 	for (i = 0; i < xdev->num_channels; i++) {  in wakeup_all()
587 		struct xillyusb_channel *chan = &xdev->channels[i];  in wakeup_all()
608 	mutex_unlock(&xdev->process_in_mutex);  in wakeup_all()
610 	wake_up_interruptible(&xdev->msg_ep->fifo.waitq);  in wakeup_all()
612 	kref_put(&xdev->kref, cleanup_dev);  in wakeup_all()
615 static void report_io_error(struct xillyusb_dev *xdev,  in report_io_error()  argument
621 	spin_lock_irqsave(&xdev->error_lock, flags);  in report_io_error()
622 	if (!xdev->error) {  in report_io_error()
623 		xdev->error = errcode;  in report_io_error()
626 	spin_unlock_irqrestore(&xdev->error_lock, flags);  in report_io_error()
629 		kref_get(&xdev->kref); /* xdev is used by work item */  in report_io_error()
630 		queue_work(xdev->workq, &xdev->wakeup_workitem);  in report_io_error()
646 	flush_work(&chan->xdev->in_ep->workitem);  in safely_assign_in_fifo()
659 			report_io_error(ep->xdev, -EIO);  in bulk_in_completer()
676 		queue_work(ep->xdev->workq, &ep->workitem);  in bulk_in_completer()
689 		report_io_error(ep->xdev, -EIO);  in bulk_out_completer()
697 		queue_work(ep->xdev->workq, &ep->workitem);  in bulk_out_completer()
702 	struct xillyusb_dev *xdev = ep->xdev;  in try_queue_bulk_in()  local
712 	if (ep->shutting_down || xdev->error)  in try_queue_bulk_in()
731 			report_io_error(xdev, -ENOMEM);  in try_queue_bulk_in()
735 		usb_fill_bulk_urb(urb, xdev->udev,  in try_queue_bulk_in()
736 				  usb_rcvbulkpipe(xdev->udev, ep->ep_num),  in try_queue_bulk_in()
744 			report_io_error(xdev, (rc == -ENOMEM) ? -ENOMEM :  in try_queue_bulk_in()
769 	struct xillyusb_dev *xdev = ep->xdev;  in try_queue_bulk_out()  local
780 	if (ep->shutting_down || xdev->error)  in try_queue_bulk_out()
835 			report_io_error(xdev, -ENOMEM);  in try_queue_bulk_out()
839 		usb_fill_bulk_urb(urb, xdev->udev,  in try_queue_bulk_out()
840 				  usb_sndbulkpipe(xdev->udev, ep->ep_num),  in try_queue_bulk_out()
848 			report_io_error(xdev, (rc == -ENOMEM) ? -ENOMEM :  in try_queue_bulk_out()
884 static int process_in_opcode(struct xillyusb_dev *xdev,  in process_in_opcode()  argument
889 	struct device *dev = xdev->dev;  in process_in_opcode()
892 	if (chan_idx >= xdev->num_channels) {  in process_in_opcode()
898 	chan = &xdev->channels[chan_idx];  in process_in_opcode()
940 	struct xillyusb_dev *xdev = ep->xdev;  in process_bulk_in()  local
941 	struct device *dev = xdev->dev;  in process_bulk_in()
959 	if (xdev->in_bytes_left) {  in process_bulk_in()
960 		bytes = min(xdev->in_bytes_left, dws << 2);  in process_bulk_in()
961 		in_bytes_left = xdev->in_bytes_left - bytes;  in process_bulk_in()
962 		chan_num = xdev->leftover_chan_num;  in process_bulk_in()
975 			unsigned int in_counter = xdev->in_counter++ & 0x3ff;  in process_bulk_in()
983 			rc = process_in_opcode(xdev, opcode, chan_num);  in process_bulk_in()
997 		if (!(chan_num & 1) || chan_idx >= xdev->num_channels ||  in process_bulk_in()
998 		    !xdev->channels[chan_idx].read_data_ok) {  in process_bulk_in()
1003 		chan = &xdev->channels[chan_idx];  in process_bulk_in()
1022 	xdev->in_bytes_left = in_bytes_left;  in process_bulk_in()
1023 	xdev->leftover_chan_num = chan_num;  in process_bulk_in()
1031 	struct xillyusb_dev *xdev = ep->xdev;  in bulk_in_work()  local
1037 	mutex_lock(&xdev->process_in_mutex);  in bulk_in_work()
1044 			mutex_unlock(&xdev->process_in_mutex);  in bulk_in_work()
1047 				report_io_error(xdev, rc);  in bulk_in_work()
1062 		if (!xdev->error)  in bulk_in_work()
1071 static int xillyusb_send_opcode(struct xillyusb_dev *xdev,  in xillyusb_send_opcode()  argument
1074 	struct xillyusb_endpoint *ep = xdev->msg_ep;  in xillyusb_send_opcode()
1084 	mutex_lock(&xdev->msg_mutex);  in xillyusb_send_opcode()
1096 					xdev->error))  in xillyusb_send_opcode()
1099 	if (xdev->error) {  in xillyusb_send_opcode()
1100 		rc = xdev->error;  in xillyusb_send_opcode()
1109 	mutex_unlock(&xdev->msg_mutex);  in xillyusb_send_opcode()
1133 	struct xillyusb_dev *xdev = chan->xdev;  in flush_downstream()  local
1147 		rc = xillyusb_send_opcode(xdev, chan_num,  in flush_downstream()
1158 				report_io_error(xdev, -EIO);  in flush_downstream()
1164 							      xdev->error,  in flush_downstream()
1167 			if (xdev->error)  in flush_downstream()
1168 				return xdev->error;  in flush_downstream()
1181 	rc = xillyusb_send_opcode(xdev, chan_num,  in flush_downstream()
1193 						      xdev->error);  in flush_downstream()
1194 			if (xdev->error)  in flush_downstream()
1195 				return xdev->error;  in flush_downstream()
1212 						      xdev->error,  in flush_downstream()
1215 		if (xdev->error)  in flush_downstream()
1216 			return xdev->error;  in flush_downstream()
1231 	struct xillyusb_dev *xdev = chan->xdev;  in request_read_anything()  local
1236 	return xillyusb_send_opcode(xdev, chan_num, opcode, mercy >> sh);  in request_read_anything()
1241 	struct xillyusb_dev *xdev;  in xillyusb_open()  local
1250 	rc = xillybus_find_inode(inode, (void **)&xdev, &index);  in xillyusb_open()
1256 	kref_get(&xdev->kref);  in xillyusb_open()
1259 	chan = &xdev->channels[index];  in xillyusb_open()
1266 	if (xdev->error)  in xillyusb_open()
1275 		dev_err(xdev->dev,  in xillyusb_open()
1282 		dev_err(xdev->dev,  in xillyusb_open()
1302 		out_ep = endpoint_alloc(xdev,  in xillyusb_open()
1334 			report_io_error(xdev, rc);  in xillyusb_open()
1376 		rc = xillyusb_send_opcode(xdev, (chan->chan_idx << 1) | 1,  in xillyusb_open()
1424 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_open()
1429 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_open()
1438 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_read()  local
1517 			rc = xillyusb_send_opcode(xdev, chan_num,  in xillyusb_read()
1546 		if (xdev->error) {  in xillyusb_read()
1547 			rc = xdev->error;  in xillyusb_read()
1557 			rc = xillyusb_send_opcode(xdev, chan_num,  in xillyusb_read()
1633 		struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_flush()  local
1636 		if (!xdev->error)  in xillyusb_flush()
1637 			dev_warn(xdev->dev,  in xillyusb_flush()
1649 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_write()  local
1659 		if (xdev->error) {  in xillyusb_write()
1660 			rc = xdev->error;  in xillyusb_write()
1680 		     fifo->fill != fifo->size || xdev->error)) {  in xillyusb_write()
1712 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_release()  local
1718 		rc_read = xillyusb_send_opcode(xdev, (chan->chan_idx << 1) | 1,  in xillyusb_release()
1767 		rc_write = xillyusb_send_opcode(xdev, chan->chan_idx << 1,  in xillyusb_release()
1775 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_release()
1788 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_llseek()  local
1825 	rc = xillyusb_send_opcode(xdev, chan->chan_idx << 1,  in xillyusb_llseek()
1890 	if (chan->xdev->error)  in xillyusb_poll()
1907 static int xillyusb_setup_base_eps(struct xillyusb_dev *xdev)  in xillyusb_setup_base_eps()  argument
1909 	xdev->msg_ep = endpoint_alloc(xdev, MSG_EP_NUM | USB_DIR_OUT,  in xillyusb_setup_base_eps()
1911 	if (!xdev->msg_ep)  in xillyusb_setup_base_eps()
1914 	if (fifo_init(&xdev->msg_ep->fifo, 13)) /* 8 kiB */  in xillyusb_setup_base_eps()
1917 	xdev->msg_ep->fill_mask = -8; /* 8 bytes granularity */  in xillyusb_setup_base_eps()
1919 	xdev->in_ep = endpoint_alloc(xdev, IN_EP_NUM | USB_DIR_IN,  in xillyusb_setup_base_eps()
1921 	if (!xdev->in_ep)  in xillyusb_setup_base_eps()
1924 	try_queue_bulk_in(xdev->in_ep);  in xillyusb_setup_base_eps()
1929 	endpoint_dealloc(xdev->msg_ep); /* Also frees FIFO mem if allocated */  in xillyusb_setup_base_eps()
1930 	xdev->msg_ep = NULL;  in xillyusb_setup_base_eps()
1934 static int setup_channels(struct xillyusb_dev *xdev,  in setup_channels()  argument
1945 	xdev->channels = chan;  in setup_channels()
1951 		chan->xdev = xdev;  in setup_channels()
1989 	struct xillyusb_dev *xdev = usb_get_intfdata(interface);  in xillyusb_discovery()  local
1997 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_discovery()
2010 	rc = setup_channels(xdev, bogus_chandesc, 1);  in xillyusb_discovery()
2020 	chan = xdev->channels;  in xillyusb_discovery()
2025 	xdev->num_channels = 1;  in xillyusb_discovery()
2027 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_REQ_IDT, 0);  in xillyusb_discovery()
2038 	if (xdev->error) {  in xillyusb_discovery()
2039 		rc = xdev->error;  in xillyusb_discovery()
2089 	rc = setup_channels(xdev, (void *)idt + 3, num_channels);  in xillyusb_discovery()
2101 	flush_workqueue(xdev->workq);  in xillyusb_discovery()
2103 	xdev->num_channels = num_channels;  in xillyusb_discovery()
2109 				  THIS_MODULE, xdev,  in xillyusb_discovery()
2132 	struct xillyusb_dev *xdev;  in xillyusb_probe()  local
2135 	xdev = kzalloc(sizeof(*xdev), GFP_KERNEL);  in xillyusb_probe()
2136 	if (!xdev)  in xillyusb_probe()
2139 	kref_init(&xdev->kref);  in xillyusb_probe()
2140 	mutex_init(&xdev->process_in_mutex);  in xillyusb_probe()
2141 	mutex_init(&xdev->msg_mutex);  in xillyusb_probe()
2143 	xdev->udev = usb_get_dev(interface_to_usbdev(interface));  in xillyusb_probe()
2144 	xdev->dev = &interface->dev;  in xillyusb_probe()
2145 	xdev->error = 0;  in xillyusb_probe()
2146 	spin_lock_init(&xdev->error_lock);  in xillyusb_probe()
2147 	xdev->in_counter = 0;  in xillyusb_probe()
2148 	xdev->in_bytes_left = 0;  in xillyusb_probe()
2149 	xdev->workq = alloc_workqueue(xillyname, WQ_HIGHPRI, 0);  in xillyusb_probe()
2151 	if (!xdev->workq) {  in xillyusb_probe()
2157 	INIT_WORK(&xdev->wakeup_workitem, wakeup_all);  in xillyusb_probe()
2159 	usb_set_intfdata(interface, xdev);  in xillyusb_probe()
2161 	rc = xillyusb_setup_base_eps(xdev);  in xillyusb_probe()
2172 	endpoint_quiesce(xdev->in_ep);  in xillyusb_probe()
2173 	endpoint_quiesce(xdev->msg_ep);  in xillyusb_probe()
2177 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_probe()
2183 	struct xillyusb_dev *xdev = usb_get_intfdata(interface);  in xillyusb_disconnect()  local
2184 	struct xillyusb_endpoint *msg_ep = xdev->msg_ep;  in xillyusb_disconnect()
2189 	xillybus_cleanup_chrdev(xdev, &interface->dev);  in xillyusb_disconnect()
2197 	xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_disconnect()
2207 					      msg_ep->drained || xdev->error,  in xillyusb_disconnect()
2214 	report_io_error(xdev, -ENODEV); /* Discourage further activity */  in xillyusb_disconnect()
2223 	for (i = 0; i < xdev->num_channels; i++) {  in xillyusb_disconnect()
2224 		struct xillyusb_channel *chan = &xdev->channels[i];  in xillyusb_disconnect()
2237 	endpoint_quiesce(xdev->in_ep);  in xillyusb_disconnect()
2238 	endpoint_quiesce(xdev->msg_ep);  in xillyusb_disconnect()
2242 	xdev->dev = NULL;  in xillyusb_disconnect()
2245 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_disconnect()