276 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr);
277 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,
279 static int  send_iosp_ext_cmd(struct edgeport_port *edge_port, __u8 command,
283 				struct edgeport_port *edge_port,
285 static int  send_cmd_write_uart_register(struct edgeport_port *edge_port,
287 static int  write_cmd_usb(struct edgeport_port *edge_port,
290 				struct edgeport_port *edge_port);
571 	struct edgeport_port *edge_port;  in edge_interrupt_callback()  local
642 				edge_port = usb_get_serial_port_data(port);  in edge_interrupt_callback()
643 				if (edge_port && edge_port->open) {  in edge_interrupt_callback()
644 					spin_lock_irqsave(&edge_port->ep_lock,  in edge_interrupt_callback()
646 					edge_port->txCredits += txCredits;  in edge_interrupt_callback()
647 					spin_unlock_irqrestore(&edge_port->ep_lock,  in edge_interrupt_callback()
651 						edge_port->txCredits);  in edge_interrupt_callback()
655 					tty_port_tty_wakeup(&edge_port->port->port);  in edge_interrupt_callback()
659 								edge_port);  in edge_interrupt_callback()
744 	struct edgeport_port *edge_port = urb->context;  in edge_bulk_out_data_callback()  local
753 	if (edge_port->open)  in edge_bulk_out_data_callback()
754 		tty_port_tty_wakeup(&edge_port->port->port);  in edge_bulk_out_data_callback()
757 	edge_port->write_in_progress = false;  in edge_bulk_out_data_callback()
761 		(usb_get_serial_data(edge_port->port->serial)), edge_port);  in edge_bulk_out_data_callback()
772 	struct edgeport_port *edge_port = urb->context;  in edge_bulk_out_cmd_callback()  local
794 	if (edge_port->open)  in edge_bulk_out_cmd_callback()
795 		tty_port_tty_wakeup(&edge_port->port->port);  in edge_bulk_out_cmd_callback()
798 	edge_port->commandPending = false;  in edge_bulk_out_cmd_callback()
799 	wake_up(&edge_port->wait_command);  in edge_bulk_out_cmd_callback()
815 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_open()  local
821 	if (edge_port == NULL)  in edge_open()
877 	init_waitqueue_head(&edge_port->wait_open);  in edge_open()
878 	init_waitqueue_head(&edge_port->wait_chase);  in edge_open()
879 	init_waitqueue_head(&edge_port->wait_command);  in edge_open()
882 	edge_port->txCredits = 0;	/* Can't send any data yet */  in edge_open()
884 	edge_port->shadowMCR = MCR_MASTER_IE;  in edge_open()
885 	edge_port->chaseResponsePending = false;  in edge_open()
888 	edge_port->openPending = true;  in edge_open()
889 	edge_port->open        = false;  in edge_open()
890 	response = send_iosp_ext_cmd(edge_port, IOSP_CMD_OPEN_PORT, 0);  in edge_open()
894 		edge_port->openPending = false;  in edge_open()
899 	wait_event_timeout(edge_port->wait_open, !edge_port->openPending,  in edge_open()
902 	if (!edge_port->open) {  in edge_open()
905 		edge_port->openPending = false;  in edge_open()
910 	edge_port->txfifo.head	= 0;  in edge_open()
911 	edge_port->txfifo.tail	= 0;  in edge_open()
912 	edge_port->txfifo.count	= 0;  in edge_open()
913 	edge_port->txfifo.size	= edge_port->maxTxCredits;  in edge_open()
914 	edge_port->txfifo.fifo	= kmalloc(edge_port->maxTxCredits, GFP_KERNEL);  in edge_open()
916 	if (!edge_port->txfifo.fifo) {  in edge_open()
922 	edge_port->write_urb = usb_alloc_urb(0, GFP_KERNEL);  in edge_open()
923 	edge_port->write_in_progress = false;  in edge_open()
925 	if (!edge_port->write_urb) {  in edge_open()
931 		__func__, edge_port->maxTxCredits);  in edge_open()
947 static void block_until_chase_response(struct edgeport_port *edge_port)  in block_until_chase_response()  argument
949 	struct device *dev = &edge_port->port->dev;  in block_until_chase_response()
957 		lastCredits = edge_port->txCredits;  in block_until_chase_response()
960 		if (!edge_port->chaseResponsePending) {  in block_until_chase_response()
964 			if (edge_port->txCredits == edge_port->maxTxCredits) {  in block_until_chase_response()
971 		prepare_to_wait(&edge_port->wait_chase, &wait,  in block_until_chase_response()
974 		finish_wait(&edge_port->wait_chase, &wait);  in block_until_chase_response()
976 		if (lastCredits == edge_port->txCredits) {  in block_until_chase_response()
980 				edge_port->chaseResponsePending = false;  in block_until_chase_response()
987 					lastCredits, edge_port->txCredits);  in block_until_chase_response()
1004 static void block_until_tx_empty(struct edgeport_port *edge_port)  in block_until_tx_empty()  argument
1006 	struct device *dev = &edge_port->port->dev;  in block_until_tx_empty()
1008 	struct TxFifo *fifo = &edge_port->txfifo;  in block_until_tx_empty()
1024 		prepare_to_wait(&edge_port->wait_chase, &wait,  in block_until_tx_empty()
1027 		finish_wait(&edge_port->wait_chase, &wait);  in block_until_tx_empty()
1053 	struct edgeport_port *edge_port;  in edge_close()  local
1057 	edge_port = usb_get_serial_port_data(port);  in edge_close()
1058 	if (edge_serial == NULL || edge_port == NULL)  in edge_close()
1062 	block_until_tx_empty(edge_port);  in edge_close()
1064 	edge_port->closePending = true;  in edge_close()
1069 		edge_port->chaseResponsePending = true;  in edge_close()
1072 		status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);  in edge_close()
1075 			block_until_chase_response(edge_port);  in edge_close()
1077 			edge_port->chaseResponsePending = false;  in edge_close()
1084 		send_iosp_ext_cmd(edge_port, IOSP_CMD_CLOSE_PORT, 0);  in edge_close()
1088 	edge_port->closePending = false;  in edge_close()
1089 	edge_port->open = false;  in edge_close()
1090 	edge_port->openPending = false;  in edge_close()
1092 	usb_kill_urb(edge_port->write_urb);  in edge_close()
1094 	if (edge_port->write_urb) {  in edge_close()
1097 		kfree(edge_port->write_urb->transfer_buffer);  in edge_close()
1098 		usb_free_urb(edge_port->write_urb);  in edge_close()
1099 		edge_port->write_urb = NULL;  in edge_close()
1101 	kfree(edge_port->txfifo.fifo);  in edge_close()
1102 	edge_port->txfifo.fifo = NULL;  in edge_close()
1115 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_write()  local
1123 	if (edge_port == NULL)  in edge_write()
1127 	fifo = &edge_port->txfifo;  in edge_write()
1129 	spin_lock_irqsave(&edge_port->ep_lock, flags);  in edge_write()
1133 				(edge_port->txCredits - fifo->count));  in edge_write()
1136 		__func__, count, edge_port->txCredits - fifo->count, copySize);  in edge_write()
1184 	spin_unlock_irqrestore(&edge_port->ep_lock, flags);  in edge_write()
1187 			usb_get_serial_data(port->serial), edge_port);  in edge_write()
1190 		__func__, copySize, edge_port->txCredits, fifo->count);  in edge_write()
1210 					struct edgeport_port *edge_port)  in send_more_port_data()  argument
1212 	struct TxFifo	*fifo = &edge_port->txfifo;  in send_more_port_data()
1213 	struct device	*dev = &edge_port->port->dev;  in send_more_port_data()
1223 	spin_lock_irqsave(&edge_port->ep_lock, flags);  in send_more_port_data()
1225 	if (edge_port->write_in_progress ||  in send_more_port_data()
1226 	    !edge_port->open             ||  in send_more_port_data()
1229 			__func__, fifo->count, edge_port->write_in_progress);  in send_more_port_data()
1240 …if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits, EDGE_FW_…  in send_more_port_data()
1242 			__func__, fifo->count, edge_port->txCredits);  in send_more_port_data()
1247 	edge_port->write_in_progress = true;  in send_more_port_data()
1250 	urb = edge_port->write_urb;  in send_more_port_data()
1261 		edge_port->write_in_progress = false;  in send_more_port_data()
1264 	buffer[0] = IOSP_BUILD_DATA_HDR1(edge_port->port->port_number, count);  in send_more_port_data()
1265 	buffer[1] = IOSP_BUILD_DATA_HDR2(edge_port->port->port_number, count);  in send_more_port_data()
1285 		usb_serial_debug_data(&edge_port->port->dev, __func__, count, &buffer[2]);  in send_more_port_data()
1292 			edge_bulk_out_data_callback, edge_port);  in send_more_port_data()
1295 	edge_port->txCredits -= count;  in send_more_port_data()
1296 	edge_port->port->icount.tx += count;  in send_more_port_data()
1301 		dev_err_console(edge_port->port,  in send_more_port_data()
1304 		edge_port->write_in_progress = false;  in send_more_port_data()
1307 		edge_port->txCredits += count;  in send_more_port_data()
1308 		edge_port->port->icount.tx -= count;  in send_more_port_data()
1311 		__func__, count, edge_port->txCredits, fifo->count);  in send_more_port_data()
1314 	spin_unlock_irqrestore(&edge_port->ep_lock, flags);  in send_more_port_data()
1326 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_write_room()  local
1331 	spin_lock_irqsave(&edge_port->ep_lock, flags);  in edge_write_room()
1332 	room = edge_port->txCredits - edge_port->txfifo.count;  in edge_write_room()
1333 	spin_unlock_irqrestore(&edge_port->ep_lock, flags);  in edge_write_room()
1349 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_chars_in_buffer()  local
1353 	spin_lock_irqsave(&edge_port->ep_lock, flags);  in edge_chars_in_buffer()
1354 	num_chars = edge_port->maxTxCredits - edge_port->txCredits +  in edge_chars_in_buffer()
1355 						edge_port->txfifo.count;  in edge_chars_in_buffer()
1356 	spin_unlock_irqrestore(&edge_port->ep_lock, flags);  in edge_chars_in_buffer()
1373 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_throttle()  local
1376 	if (edge_port == NULL)  in edge_throttle()
1379 	if (!edge_port->open) {  in edge_throttle()
1394 		edge_port->shadowMCR &= ~MCR_RTS;  in edge_throttle()
1395 		status = send_cmd_write_uart_register(edge_port, MCR,  in edge_throttle()
1396 							edge_port->shadowMCR);  in edge_throttle()
1411 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_unthrottle()  local
1414 	if (edge_port == NULL)  in edge_unthrottle()
1417 	if (!edge_port->open) {  in edge_unthrottle()
1431 		edge_port->shadowMCR |= MCR_RTS;  in edge_unthrottle()
1432 		send_cmd_write_uart_register(edge_port, MCR,  in edge_unthrottle()
1433 						edge_port->shadowMCR);  in edge_unthrottle()
1447 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_set_termios()  local
1449 	if (edge_port == NULL)  in edge_set_termios()
1452 	if (!edge_port->open) {  in edge_set_termios()
1458 	change_port_settings(tty, edge_port, old_termios);  in edge_set_termios()
1472 static int get_lsr_info(struct edgeport_port *edge_port,  in get_lsr_info()  argument
1478 	spin_lock_irqsave(&edge_port->ep_lock, flags);  in get_lsr_info()
1479 	if (edge_port->maxTxCredits == edge_port->txCredits &&  in get_lsr_info()
1480 	    edge_port->txfifo.count == 0) {  in get_lsr_info()
1481 		dev_dbg(&edge_port->port->dev, "%s -- Empty\n", __func__);  in get_lsr_info()
1484 	spin_unlock_irqrestore(&edge_port->ep_lock, flags);  in get_lsr_info()
1495 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_tiocmset()  local
1498 	mcr = edge_port->shadowMCR;  in edge_tiocmset()
1513 	edge_port->shadowMCR = mcr;  in edge_tiocmset()
1515 	send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);  in edge_tiocmset()
1523 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_tiocmget()  local
1528 	msr = edge_port->shadowMSR;  in edge_tiocmget()
1529 	mcr = edge_port->shadowMCR;  in edge_tiocmget()
1548 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_ioctl()  local
1553 		return get_lsr_info(edge_port, (unsigned int __user *) arg);  in edge_ioctl()
1566 	struct edgeport_port *edge_port = usb_get_serial_port_data(port);  in edge_break()  local
1573 		edge_port->chaseResponsePending = true;  in edge_break()
1576 		status = send_iosp_ext_cmd(edge_port, IOSP_CMD_CHASE_PORT, 0);  in edge_break()
1579 			block_until_chase_response(edge_port);  in edge_break()
1581 			edge_port->chaseResponsePending = false;  in edge_break()
1589 			status = send_iosp_ext_cmd(edge_port,  in edge_break()
1593 			status = send_iosp_ext_cmd(edge_port,  in edge_break()
1615 	struct edgeport_port *edge_port;  in process_rcvd_data()  local
1711 				edge_port = usb_get_serial_port_data(port);  in process_rcvd_data()
1712 				if (edge_port && edge_port->open) {  in process_rcvd_data()
1716 					edge_tty_recv(edge_port->port, buffer,  in process_rcvd_data()
1718 					edge_port->port->icount.rx += rxLen;  in process_rcvd_data()
1750 	struct edgeport_port *edge_port;  in process_rcvd_status()  local
1759 	edge_port = usb_get_serial_port_data(port);  in process_rcvd_status()
1760 	if (edge_port == NULL) {  in process_rcvd_status()
1784 			edge_port->chaseResponsePending = false;  in process_rcvd_status()
1785 			wake_up(&edge_port->wait_chase);  in process_rcvd_status()
1797 		edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);  in process_rcvd_status()
1798 		edge_port->maxTxCredits = edge_port->txCredits;  in process_rcvd_status()
1800 			__func__, edge_serial->rxPort, byte2, edge_port->txCredits);  in process_rcvd_status()
1801 		handle_new_msr(edge_port, byte2);  in process_rcvd_status()
1805 		tty = tty_port_tty_get(&edge_port->port->port);  in process_rcvd_status()
1808 				edge_port, &tty->termios);  in process_rcvd_status()
1813 		edge_port->openPending = false;  in process_rcvd_status()
1814 		edge_port->open = true;  in process_rcvd_status()
1815 		wake_up(&edge_port->wait_open);  in process_rcvd_status()
1823 	if (!edge_port->open || edge_port->closePending)  in process_rcvd_status()
1831 		handle_new_lsr(edge_port, false, byte2, 0);  in process_rcvd_status()
1839 		handle_new_lsr(edge_port, true, byte2, byte3);  in process_rcvd_status()
1855 		handle_new_msr(edge_port, byte2);  in process_rcvd_status()
1890 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)  in handle_new_msr()  argument
1896 		icount = &edge_port->port->icount;  in handle_new_msr()
1907 		wake_up_interruptible(&edge_port->port->port.delta_msr_wait);  in handle_new_msr()
1911 	edge_port->shadowMSR = newMsr & 0xf0;  in handle_new_msr()
1919 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData,  in handle_new_lsr()  argument
1926 	edge_port->shadowLSR = lsr;  in handle_new_lsr()
1939 		edge_tty_recv(edge_port->port, &data, 1);  in handle_new_lsr()
1942 	icount = &edge_port->port->icount;  in handle_new_lsr()
2095 static int send_iosp_ext_cmd(struct edgeport_port *edge_port,  in send_iosp_ext_cmd()  argument
2109 	MAKE_CMD_EXT_CMD(&currentCommand, &length, edge_port->port->port_number,  in send_iosp_ext_cmd()
2112 	status = write_cmd_usb(edge_port, buffer, length);  in send_iosp_ext_cmd()
2126 static int write_cmd_usb(struct edgeport_port *edge_port,  in write_cmd_usb()  argument
2130 				usb_get_serial_data(edge_port->port->serial);  in write_cmd_usb()
2131 	struct device *dev = &edge_port->port->dev;  in write_cmd_usb()
2149 			buffer, length, edge_bulk_out_cmd_callback, edge_port);  in write_cmd_usb()
2151 	edge_port->commandPending = true;  in write_cmd_usb()
2164 	wait_event(&edge_port->wait_command, !edge_port->commandPending);  in write_cmd_usb()
2166 	if (edge_port->commandPending) {  in write_cmd_usb()
2181 static int send_cmd_write_baud_rate(struct edgeport_port *edge_port,  in send_cmd_write_baud_rate()  argument
2185 				usb_get_serial_data(edge_port->port->serial);  in send_cmd_write_baud_rate()
2186 	struct device *dev = &edge_port->port->dev;  in send_cmd_write_baud_rate()
2192 	u32 number = edge_port->port->port_number;  in send_cmd_write_baud_rate()
2225 						edge_port->shadowLCR);  in send_cmd_write_baud_rate()
2227 	status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);  in send_cmd_write_baud_rate()
2275 static int send_cmd_write_uart_register(struct edgeport_port *edge_port,  in send_cmd_write_uart_register()  argument
2279 				usb_get_serial_data(edge_port->port->serial);  in send_cmd_write_uart_register()
2280 	struct device *dev = &edge_port->port->dev;  in send_cmd_write_uart_register()
2311 	MAKE_CMD_WRITE_REG(&currCmd, &cmdLen, edge_port->port->port_number,  in send_cmd_write_uart_register()
2314 	status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);  in send_cmd_write_uart_register()
2331 	struct edgeport_port *edge_port, const struct ktermios *old_termios)  in change_port_settings()  argument
2333 	struct device *dev = &edge_port->port->dev;  in change_port_settings()
2335 			usb_get_serial_data(edge_port->port->serial);  in change_port_settings()
2346 	if (!edge_port->open &&  in change_port_settings()
2347 	    !edge_port->openPending) {  in change_port_settings()
2421 			send_iosp_ext_cmd(edge_port,  in change_port_settings()
2423 			send_iosp_ext_cmd(edge_port,  in change_port_settings()
2449 		send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);  in change_port_settings()
2452 		send_iosp_ext_cmd(edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);  in change_port_settings()
2455 	edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);  in change_port_settings()
2456 	edge_port->shadowLCR |= (lData | lParity | lStop);  in change_port_settings()
2458 	edge_port->validDataMask = mask;  in change_port_settings()
2461 	status = send_cmd_write_uart_register(edge_port, LCR,  in change_port_settings()
2462 							edge_port->shadowLCR);  in change_port_settings()
2467 	edge_port->shadowMCR = MCR_MASTER_IE;  in change_port_settings()
2469 		edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);  in change_port_settings()
2471 	status = send_cmd_write_uart_register(edge_port, MCR,  in change_port_settings()
2472 						edge_port->shadowMCR);  in change_port_settings()
2484 	status = send_cmd_write_baud_rate(edge_port, baud);  in change_port_settings()
2957 	struct edgeport_port *edge_port;  in edge_port_probe()  local
2959 	edge_port = kzalloc(sizeof(*edge_port), GFP_KERNEL);  in edge_port_probe()
2960 	if (!edge_port)  in edge_port_probe()
2963 	spin_lock_init(&edge_port->ep_lock);  in edge_port_probe()
2964 	edge_port->port = port;  in edge_port_probe()
2966 	usb_set_serial_port_data(port, edge_port);  in edge_port_probe()
2973 	struct edgeport_port *edge_port;  in edge_port_remove()  local
2975 	edge_port = usb_get_serial_port_data(port);  in edge_port_remove()
2976 	kfree(edge_port);  in edge_port_remove()