89 	struct xillyusb_dev *xdev;  member
118 	struct xillyusb_dev *xdev;  member
479 *endpoint_alloc(struct xillyusb_dev *xdev,  in endpoint_alloc()  argument
508 	ep->xdev = xdev;  in endpoint_alloc()
540 	struct xillyusb_dev *xdev =  in cleanup_dev()  local
543 	if (xdev->in_ep)  in cleanup_dev()
544 		endpoint_dealloc(xdev->in_ep);  in cleanup_dev()
546 	if (xdev->msg_ep)  in cleanup_dev()
547 		endpoint_dealloc(xdev->msg_ep);  in cleanup_dev()
549 	if (xdev->workq)  in cleanup_dev()
550 		destroy_workqueue(xdev->workq);  in cleanup_dev()
552 	kfree(xdev->channels); /* Argument may be NULL, and that's fine */  in cleanup_dev()
553 	kfree(xdev);  in cleanup_dev()
572 	struct xillyusb_dev *xdev = container_of(work, struct xillyusb_dev,  in wakeup_all()  local
575 	mutex_lock(&xdev->process_in_mutex);  in wakeup_all()
577 	for (i = 0; i < xdev->num_channels; i++) {  in wakeup_all()
578 		struct xillyusb_channel *chan = &xdev->channels[i];  in wakeup_all()
599 	mutex_unlock(&xdev->process_in_mutex);  in wakeup_all()
601 	wake_up_interruptible(&xdev->msg_ep->fifo.waitq);  in wakeup_all()
603 	kref_put(&xdev->kref, cleanup_dev);  in wakeup_all()
606 static void report_io_error(struct xillyusb_dev *xdev,  in report_io_error()  argument
612 	spin_lock_irqsave(&xdev->error_lock, flags);  in report_io_error()
613 	if (!xdev->error) {  in report_io_error()
614 		xdev->error = errcode;  in report_io_error()
617 	spin_unlock_irqrestore(&xdev->error_lock, flags);  in report_io_error()
620 		kref_get(&xdev->kref); /* xdev is used by work item */  in report_io_error()
621 		queue_work(xdev->workq, &xdev->wakeup_workitem);  in report_io_error()
637 	flush_work(&chan->xdev->in_ep->workitem);  in safely_assign_in_fifo()
650 			report_io_error(ep->xdev, -EIO);  in bulk_in_completer()
667 		queue_work(ep->xdev->workq, &ep->workitem);  in bulk_in_completer()
680 		report_io_error(ep->xdev, -EIO);  in bulk_out_completer()
688 		queue_work(ep->xdev->workq, &ep->workitem);  in bulk_out_completer()
693 	struct xillyusb_dev *xdev = ep->xdev;  in try_queue_bulk_in()  local
703 	if (ep->shutting_down || xdev->error)  in try_queue_bulk_in()
722 			report_io_error(xdev, -ENOMEM);  in try_queue_bulk_in()
726 		usb_fill_bulk_urb(urb, xdev->udev,  in try_queue_bulk_in()
727 				  usb_rcvbulkpipe(xdev->udev, ep->ep_num),  in try_queue_bulk_in()
735 			report_io_error(xdev, (rc == -ENOMEM) ? -ENOMEM :  in try_queue_bulk_in()
760 	struct xillyusb_dev *xdev = ep->xdev;  in try_queue_bulk_out()  local
771 	if (ep->shutting_down || xdev->error)  in try_queue_bulk_out()
826 			report_io_error(xdev, -ENOMEM);  in try_queue_bulk_out()
830 		usb_fill_bulk_urb(urb, xdev->udev,  in try_queue_bulk_out()
831 				  usb_sndbulkpipe(xdev->udev, ep->ep_num),  in try_queue_bulk_out()
839 			report_io_error(xdev, (rc == -ENOMEM) ? -ENOMEM :  in try_queue_bulk_out()
875 static int process_in_opcode(struct xillyusb_dev *xdev,  in process_in_opcode()  argument
880 	struct device *dev = xdev->dev;  in process_in_opcode()
883 	if (chan_idx >= xdev->num_channels) {  in process_in_opcode()
889 	chan = &xdev->channels[chan_idx];  in process_in_opcode()
931 	struct xillyusb_dev *xdev = ep->xdev;  in process_bulk_in()  local
932 	struct device *dev = xdev->dev;  in process_bulk_in()
950 	if (xdev->in_bytes_left) {  in process_bulk_in()
951 		bytes = min(xdev->in_bytes_left, dws << 2);  in process_bulk_in()
952 		in_bytes_left = xdev->in_bytes_left - bytes;  in process_bulk_in()
953 		chan_num = xdev->leftover_chan_num;  in process_bulk_in()
966 			unsigned int in_counter = xdev->in_counter++ & 0x3ff;  in process_bulk_in()
974 			rc = process_in_opcode(xdev, opcode, chan_num);  in process_bulk_in()
988 		if (!(chan_num & 1) || chan_idx >= xdev->num_channels ||  in process_bulk_in()
989 		    !xdev->channels[chan_idx].read_data_ok) {  in process_bulk_in()
994 		chan = &xdev->channels[chan_idx];  in process_bulk_in()
1013 	xdev->in_bytes_left = in_bytes_left;  in process_bulk_in()
1014 	xdev->leftover_chan_num = chan_num;  in process_bulk_in()
1022 	struct xillyusb_dev *xdev = ep->xdev;  in bulk_in_work()  local
1028 	mutex_lock(&xdev->process_in_mutex);  in bulk_in_work()
1035 			mutex_unlock(&xdev->process_in_mutex);  in bulk_in_work()
1038 				report_io_error(xdev, rc);  in bulk_in_work()
1053 		if (!xdev->error)  in bulk_in_work()
1062 static int xillyusb_send_opcode(struct xillyusb_dev *xdev,  in xillyusb_send_opcode()  argument
1065 	struct xillyusb_endpoint *ep = xdev->msg_ep;  in xillyusb_send_opcode()
1075 	mutex_lock(&xdev->msg_mutex);  in xillyusb_send_opcode()
1087 					xdev->error))  in xillyusb_send_opcode()
1090 	if (xdev->error) {  in xillyusb_send_opcode()
1091 		rc = xdev->error;  in xillyusb_send_opcode()
1100 	mutex_unlock(&xdev->msg_mutex);  in xillyusb_send_opcode()
1124 	struct xillyusb_dev *xdev = chan->xdev;  in flush_downstream()  local
1138 		rc = xillyusb_send_opcode(xdev, chan_num,  in flush_downstream()
1149 				report_io_error(xdev, -EIO);  in flush_downstream()
1155 							      xdev->error,  in flush_downstream()
1158 			if (xdev->error)  in flush_downstream()
1159 				return xdev->error;  in flush_downstream()
1172 	rc = xillyusb_send_opcode(xdev, chan_num,  in flush_downstream()
1184 						      xdev->error);  in flush_downstream()
1185 			if (xdev->error)  in flush_downstream()
1186 				return xdev->error;  in flush_downstream()
1203 						      xdev->error,  in flush_downstream()
1206 		if (xdev->error)  in flush_downstream()
1207 			return xdev->error;  in flush_downstream()
1222 	struct xillyusb_dev *xdev = chan->xdev;  in request_read_anything()  local
1227 	return xillyusb_send_opcode(xdev, chan_num, opcode, mercy >> sh);  in request_read_anything()
1232 	struct xillyusb_dev *xdev;  in xillyusb_open()  local
1239 	rc = xillybus_find_inode(inode, (void **)&xdev, &index);  in xillyusb_open()
1243 	chan = &xdev->channels[index];  in xillyusb_open()
1250 	if (xdev->error)  in xillyusb_open()
1259 		dev_err(xdev->dev,  in xillyusb_open()
1266 		dev_err(xdev->dev,  in xillyusb_open()
1277 	kref_get(&xdev->kref);  in xillyusb_open()
1288 		out_ep = endpoint_alloc(xdev,  in xillyusb_open()
1320 			report_io_error(xdev, rc);  in xillyusb_open()
1362 		rc = xillyusb_send_opcode(xdev, (chan->chan_idx << 1) | 1,  in xillyusb_open()
1410 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_open()
1423 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_read()  local
1502 			rc = xillyusb_send_opcode(xdev, chan_num,  in xillyusb_read()
1531 		if (xdev->error) {  in xillyusb_read()
1532 			rc = xdev->error;  in xillyusb_read()
1542 			rc = xillyusb_send_opcode(xdev, chan_num,  in xillyusb_read()
1618 		struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_flush()  local
1621 		if (!xdev->error)  in xillyusb_flush()
1622 			dev_warn(xdev->dev,  in xillyusb_flush()
1634 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_write()  local
1644 		if (xdev->error) {  in xillyusb_write()
1645 			rc = xdev->error;  in xillyusb_write()
1665 		     fifo->fill != fifo->size || xdev->error)) {  in xillyusb_write()
1697 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_release()  local
1703 		rc_read = xillyusb_send_opcode(xdev, (chan->chan_idx << 1) | 1,  in xillyusb_release()
1752 		rc_write = xillyusb_send_opcode(xdev, chan->chan_idx << 1,  in xillyusb_release()
1760 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_release()
1773 	struct xillyusb_dev *xdev = chan->xdev;  in xillyusb_llseek()  local
1810 	rc = xillyusb_send_opcode(xdev, chan->chan_idx << 1,  in xillyusb_llseek()
1875 	if (chan->xdev->error)  in xillyusb_poll()
1892 static int xillyusb_setup_base_eps(struct xillyusb_dev *xdev)  in xillyusb_setup_base_eps()  argument
1894 	xdev->msg_ep = endpoint_alloc(xdev, MSG_EP_NUM | USB_DIR_OUT,  in xillyusb_setup_base_eps()
1896 	if (!xdev->msg_ep)  in xillyusb_setup_base_eps()
1899 	if (fifo_init(&xdev->msg_ep->fifo, 13)) /* 8 kiB */  in xillyusb_setup_base_eps()
1902 	xdev->msg_ep->fill_mask = -8; /* 8 bytes granularity */  in xillyusb_setup_base_eps()
1904 	xdev->in_ep = endpoint_alloc(xdev, IN_EP_NUM | USB_DIR_IN,  in xillyusb_setup_base_eps()
1906 	if (!xdev->in_ep)  in xillyusb_setup_base_eps()
1909 	try_queue_bulk_in(xdev->in_ep);  in xillyusb_setup_base_eps()
1914 	endpoint_dealloc(xdev->msg_ep); /* Also frees FIFO mem if allocated */  in xillyusb_setup_base_eps()
1918 static int setup_channels(struct xillyusb_dev *xdev,  in setup_channels()  argument
1929 	xdev->channels = chan;  in setup_channels()
1935 		chan->xdev = xdev;  in setup_channels()
1973 	struct xillyusb_dev *xdev = usb_get_intfdata(interface);  in xillyusb_discovery()  local
1981 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_discovery()
1994 	rc = setup_channels(xdev, bogus_chandesc, 1);  in xillyusb_discovery()
2004 	chan = xdev->channels;  in xillyusb_discovery()
2009 	xdev->num_channels = 1;  in xillyusb_discovery()
2011 	rc = xillyusb_send_opcode(xdev, ~0, OPCODE_REQ_IDT, 0);  in xillyusb_discovery()
2022 	if (xdev->error) {  in xillyusb_discovery()
2023 		rc = xdev->error;  in xillyusb_discovery()
2073 	rc = setup_channels(xdev, (void *)idt + 3, num_channels);  in xillyusb_discovery()
2085 	flush_workqueue(xdev->workq);  in xillyusb_discovery()
2087 	xdev->num_channels = num_channels;  in xillyusb_discovery()
2093 				  THIS_MODULE, xdev,  in xillyusb_discovery()
2116 	struct xillyusb_dev *xdev;  in xillyusb_probe()  local
2119 	xdev = kzalloc(sizeof(*xdev), GFP_KERNEL);  in xillyusb_probe()
2120 	if (!xdev)  in xillyusb_probe()
2123 	kref_init(&xdev->kref);  in xillyusb_probe()
2124 	mutex_init(&xdev->process_in_mutex);  in xillyusb_probe()
2125 	mutex_init(&xdev->msg_mutex);  in xillyusb_probe()
2127 	xdev->udev = usb_get_dev(interface_to_usbdev(interface));  in xillyusb_probe()
2128 	xdev->dev = &interface->dev;  in xillyusb_probe()
2129 	xdev->error = 0;  in xillyusb_probe()
2130 	spin_lock_init(&xdev->error_lock);  in xillyusb_probe()
2131 	xdev->in_counter = 0;  in xillyusb_probe()
2132 	xdev->in_bytes_left = 0;  in xillyusb_probe()
2133 	xdev->workq = alloc_workqueue(xillyname, WQ_HIGHPRI, 0);  in xillyusb_probe()
2135 	if (!xdev->workq) {  in xillyusb_probe()
2141 	INIT_WORK(&xdev->wakeup_workitem, wakeup_all);  in xillyusb_probe()
2143 	usb_set_intfdata(interface, xdev);  in xillyusb_probe()
2145 	rc = xillyusb_setup_base_eps(xdev);  in xillyusb_probe()
2156 	endpoint_quiesce(xdev->in_ep);  in xillyusb_probe()
2157 	endpoint_quiesce(xdev->msg_ep);  in xillyusb_probe()
2161 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_probe()
2167 	struct xillyusb_dev *xdev = usb_get_intfdata(interface);  in xillyusb_disconnect()  local
2168 	struct xillyusb_endpoint *msg_ep = xdev->msg_ep;  in xillyusb_disconnect()
2173 	xillybus_cleanup_chrdev(xdev, &interface->dev);  in xillyusb_disconnect()
2181 	xillyusb_send_opcode(xdev, ~0, OPCODE_QUIESCE, 0);  in xillyusb_disconnect()
2191 					      msg_ep->drained || xdev->error,  in xillyusb_disconnect()
2198 	report_io_error(xdev, -ENODEV); /* Discourage further activity */  in xillyusb_disconnect()
2207 	for (i = 0; i < xdev->num_channels; i++) {  in xillyusb_disconnect()
2208 		struct xillyusb_channel *chan = &xdev->channels[i];  in xillyusb_disconnect()
2221 	endpoint_quiesce(xdev->in_ep);  in xillyusb_disconnect()
2222 	endpoint_quiesce(xdev->msg_ep);  in xillyusb_disconnect()
2226 	xdev->dev = NULL;  in xillyusb_disconnect()
2228 	kref_put(&xdev->kref, cleanup_dev);  in xillyusb_disconnect()