468 static void handle_new_msr		(struct edgeport_port *edge_port, __u8 newMsr);
469 static void handle_new_lsr		(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data);
470 static int  send_iosp_ext_cmd		(struct edgeport_port *edge_port, __u8 command, __u8 param);
472 static int  send_cmd_write_baud_rate	(struct edgeport_port *edge_port, int baudRate);
473 static void change_port_settings	(struct edgeport_port *edge_port, struct termios *old_termios);
474 static int  send_cmd_write_uart_register	(struct edgeport_port *edge_port, __u8 regNum, __u8 regVal…
475 static int  write_cmd_usb		(struct edgeport_port *edge_port, unsigned char *buffer, int writeLength…
476 …c void send_more_port_data		(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port);
757 	struct edgeport_port *edge_port;  in edge_interrupt_callback()  local
809 					edge_port = (struct edgeport_port *)port->private;  in edge_interrupt_callback()
810 					if (edge_port->open) {  in edge_interrupt_callback()
811 						edge_port->txCredits += txCredits;  in edge_interrupt_callback()
812 						dbg("%s - txcredits for port%d = %d", __FUNCTION__, portNumber, edge_port->txCredits);  in edge_interrupt_callback()
815 						if (edge_port->port->tty)  in edge_interrupt_callback()
816 							wake_up_interruptible(&edge_port->port->tty->write_wait);  in edge_interrupt_callback()
819 						send_more_port_data(edge_serial, edge_port);  in edge_interrupt_callback()
888 	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;  in edge_bulk_out_data_callback()  local
893 	if (port_paranoia_check (edge_port->port, __FUNCTION__)) {  in edge_bulk_out_data_callback()
901 	tty = edge_port->port->tty;  in edge_bulk_out_data_callback()
903 	if (tty && edge_port->open) {  in edge_bulk_out_data_callback()
909 	edge_port->write_in_progress = FALSE;  in edge_bulk_out_data_callback()
912 	send_more_port_data((struct edgeport_serial *)(edge_port->port->serial->private), edge_port);  in edge_bulk_out_data_callback()
923 	struct edgeport_port *edge_port = (struct edgeport_port *)urb->context;  in edge_bulk_out_cmd_callback()  local
942 	if (port_paranoia_check (edge_port->port, __FUNCTION__)) {  in edge_bulk_out_cmd_callback()
952 	tty = edge_port->port->tty;  in edge_bulk_out_cmd_callback()
955 	if (tty && edge_port->open)  in edge_bulk_out_cmd_callback()
959 	edge_port->commandPending = FALSE;  in edge_bulk_out_cmd_callback()
960 	wake_up_interruptible(&edge_port->wait_command);  in edge_bulk_out_cmd_callback()
976 	struct edgeport_port *edge_port = (struct edgeport_port *)port->private;  in edge_open()  local
987 	if (edge_port == NULL)  in edge_open()
1041 	init_waitqueue_head(&edge_port->wait_open);  in edge_open()
1042 	init_waitqueue_head(&edge_port->wait_chase);  in edge_open()
1043 	init_waitqueue_head(&edge_port->delta_msr_wait);  in edge_open()
1044 	init_waitqueue_head(&edge_port->wait_command);  in edge_open()
1047 	memset (&(edge_port->icount), 0x00, sizeof(edge_port->icount));  in edge_open()
1050 	edge_port->txCredits            = 0;			/* Can't send any data yet */  in edge_open()
1051 	edge_port->shadowMCR            = MCR_MASTER_IE;	/* Must always set this bit to enable ints! */  in edge_open()
1052 	edge_port->chaseResponsePending = FALSE;  in edge_open()
1055 	edge_port->openPending = TRUE;  in edge_open()
1056 	edge_port->open        = FALSE;  in edge_open()
1057 	response = send_iosp_ext_cmd (edge_port, IOSP_CMD_OPEN_PORT, 0);  in edge_open()
1061 		edge_port->openPending = FALSE;  in edge_open()
1067 	while (timeout && edge_port->openPending == TRUE) {  in edge_open()
1068 		timeout = interruptible_sleep_on_timeout (&edge_port->wait_open, timeout);  in edge_open()
1071 	if (edge_port->open == FALSE) {  in edge_open()
1074 		edge_port->openPending = FALSE;  in edge_open()
1079 	edge_port->txfifo.head	= 0;  in edge_open()
1080 	edge_port->txfifo.tail	= 0;  in edge_open()
1081 	edge_port->txfifo.count	= 0;  in edge_open()
1082 	edge_port->txfifo.size	= edge_port->maxTxCredits;  in edge_open()
1083 	edge_port->txfifo.fifo	= kmalloc (edge_port->maxTxCredits, GFP_KERNEL);  in edge_open()
1085 	if (!edge_port->txfifo.fifo) {  in edge_open()
1092 	edge_port->write_urb = usb_alloc_urb (0);  in edge_open()
1094 	if (!edge_port->write_urb) {  in edge_open()
1100 …dbg("%s(%d) - Initialize TX fifo to %d bytes", __FUNCTION__, port->number, edge_port->maxTxCredits…  in edge_open()
1118 static void block_until_chase_response(struct edgeport_port *edge_port)  in block_until_chase_response()  argument
1126 		lastCredits = edge_port->txCredits;  in block_until_chase_response()
1129 		if (edge_port->chaseResponsePending == FALSE) {  in block_until_chase_response()
1133 			if (edge_port->txCredits == edge_port->maxTxCredits ) {  in block_until_chase_response()
1140 		interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);  in block_until_chase_response()
1142 		if (lastCredits == edge_port->txCredits) {  in block_until_chase_response()
1146 				edge_port->chaseResponsePending = FALSE;  in block_until_chase_response()
1152 			dbg("%s - Last %d, Current %d", __FUNCTION__, lastCredits, edge_port->txCredits);  in block_until_chase_response()
1169 static void block_until_tx_empty (struct edgeport_port *edge_port)  in block_until_tx_empty()  argument
1171 	struct TxFifo *fifo = &edge_port->txfifo;  in block_until_tx_empty()
1187 		interruptible_sleep_on_timeout (&edge_port->wait_chase, timeout);  in block_until_tx_empty()
1214 	struct edgeport_port *edge_port;  in edge_close()  local
1227 	edge_port = (struct edgeport_port *)port->private;  in edge_close()
1228 	if ((edge_serial == NULL) || (edge_port == NULL))  in edge_close()
1233 		block_until_tx_empty(edge_port);  in edge_close()
1235 		edge_port->closePending = TRUE;  in edge_close()
1238 		edge_port->chaseResponsePending = TRUE;  in edge_close()
1241 		status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);  in edge_close()
1244 			block_until_chase_response(edge_port);  in edge_close()
1246 			edge_port->chaseResponsePending = FALSE;  in edge_close()
1251 		send_iosp_ext_cmd (edge_port, IOSP_CMD_CLOSE_PORT, 0);  in edge_close()
1254 		edge_port->closePending = FALSE;  in edge_close()
1255 		edge_port->open = FALSE;  in edge_close()
1256 		edge_port->openPending = FALSE;  in edge_close()
1258 		if (edge_port->write_urb) {  in edge_close()
1259 			usb_unlink_urb (edge_port->write_urb);  in edge_close()
1263 	if (edge_port->write_urb) {  in edge_close()
1265 		if (edge_port->write_urb->transfer_buffer != NULL) {  in edge_close()
1266 			kfree(edge_port->write_urb->transfer_buffer);  in edge_close()
1268 		usb_free_urb   (edge_port->write_urb);  in edge_close()
1270 	if (edge_port->txfifo.fifo) {  in edge_close()
1271 		kfree(edge_port->txfifo.fifo);  in edge_close()
1286         struct edgeport_port *edge_port = (struct edgeport_port *)port->private;  in edge_write()  local
1295 	if (edge_port == NULL)  in edge_write()
1299 	fifo = &edge_port->txfifo;  in edge_write()
1302 	copySize = min ((unsigned int)count, (edge_port->txCredits - fifo->count));  in edge_write()
1305 	    port->number, count, edge_port->txCredits - fifo->count, copySize);  in edge_write()
1360 	send_more_port_data((struct edgeport_serial *)port->serial->private, edge_port);  in edge_write()
1362 …dbg("%s wrote %d byte(s) TxCredits %d, Fifo %d", __FUNCTION__, copySize, edge_port->txCredits, fif…  in edge_write()
1381 …atic void send_more_port_data(struct edgeport_serial *edge_serial, struct edgeport_port *edge_port)  in send_more_port_data()  argument
1383 	struct TxFifo	*fifo = &edge_port->txfifo;  in send_more_port_data()
1392 	dbg("%s(%d)", __FUNCTION__, edge_port->port->number);  in send_more_port_data()
1394 	if (edge_port->write_in_progress ||  in send_more_port_data()
1395 	    !edge_port->open             ||  in send_more_port_data()
1397 …d) EXIT - fifo %d, PendingWrite = %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_po…  in send_more_port_data()
1408 	if (edge_port->txCredits < EDGE_FW_GET_TX_CREDITS_SEND_THRESHOLD(edge_port->maxTxCredits)) {  in send_more_port_data()
1409 … enough credit - fifo %d TxCredit %d", __FUNCTION__, edge_port->port->number, fifo->count, edge_po…  in send_more_port_data()
1414 	edge_port->write_in_progress = TRUE;  in send_more_port_data()
1417 	urb = edge_port->write_urb;  in send_more_port_data()
1430 		edge_port->write_in_progress = FALSE;  in send_more_port_data()
1433 	buffer[0] = IOSP_BUILD_DATA_HDR1 (edge_port->port->number - edge_port->port->serial->minor, count);  in send_more_port_data()
1434 	buffer[1] = IOSP_BUILD_DATA_HDR2 (edge_port->port->number - edge_port->port->serial->minor, count);  in send_more_port_data()
1460 		       buffer, count+2, edge_bulk_out_data_callback, edge_port);  in send_more_port_data()
1467 	edge_port->txCredits -= count;  in send_more_port_data()
1468 	edge_port->icount.tx += count;  in send_more_port_data()
1474 		edge_port->write_in_progress = FALSE;  in send_more_port_data()
1477 		edge_port->txCredits += count;  in send_more_port_data()
1478 		edge_port->icount.tx -= count;  in send_more_port_data()
1480 …dbg("%s wrote %d byte(s) TxCredit %d, Fifo %d", __FUNCTION__, count, edge_port->txCredits, fifo->c…  in send_more_port_data()
1494 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_write_room()  local
1499 	if (edge_port == NULL)  in edge_write_room()
1501 	if (edge_port->closePending == TRUE)  in edge_write_room()
1506 	if (!edge_port->open) {  in edge_write_room()
1512 	room = edge_port->txCredits - edge_port->txfifo.count;  in edge_write_room()
1530 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_chars_in_buffer()  local
1535 	if (edge_port == NULL)  in edge_chars_in_buffer()
1537 	if (edge_port->closePending == TRUE)  in edge_chars_in_buffer()
1540 	if (!edge_port->open) {  in edge_chars_in_buffer()
1545 	num_chars = edge_port->maxTxCredits - edge_port->txCredits + edge_port->txfifo.count;  in edge_chars_in_buffer()
1561 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_throttle()  local
1567 	if (edge_port == NULL)  in edge_throttle()
1570 	if (!edge_port->open) {  in edge_throttle()
1592 		edge_port->shadowMCR &= ~MCR_RTS;  in edge_throttle()
1593 		status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);  in edge_throttle()
1610 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_unthrottle()  local
1616 	if (edge_port == NULL)  in edge_unthrottle()
1619 	if (!edge_port->open) {  in edge_unthrottle()
1641 		edge_port->shadowMCR |= MCR_RTS;  in edge_unthrottle()
1642 		status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);  in edge_unthrottle()
1658 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_set_termios()  local
1688 	if (edge_port == NULL)  in edge_set_termios()
1691 	if (!edge_port->open) {  in edge_set_termios()
1697 	change_port_settings (edge_port, old_termios);  in edge_set_termios()
1713 static int get_lsr_info(struct edgeport_port *edge_port, unsigned int *value)  in get_lsr_info()  argument
1717 	if (edge_port->maxTxCredits == edge_port->txCredits &&  in get_lsr_info()
1718 	    edge_port->txfifo.count == 0) {  in get_lsr_info()
1728 static int get_number_bytes_avail(struct edgeport_port *edge_port, unsigned int *value)  in get_number_bytes_avail()  argument
1731 	struct tty_struct *tty = edge_port->port->tty;  in get_number_bytes_avail()
1738 	dbg("%s(%d) = %d", __FUNCTION__,  edge_port->port->number, result);  in get_number_bytes_avail()
1745 static int set_modem_info(struct edgeport_port *edge_port, unsigned int cmd, unsigned int *value)  in set_modem_info()  argument
1747 	unsigned int mcr = edge_port->shadowMCR;  in set_modem_info()
1782 	edge_port->shadowMCR = mcr;  in set_modem_info()
1784 	send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);  in set_modem_info()
1789 static int get_modem_info(struct edgeport_port *edge_port, unsigned int *value)  in get_modem_info()  argument
1792 	unsigned int msr = edge_port->shadowMSR;  in get_modem_info()
1793 	unsigned int mcr = edge_port->shadowMCR;  in get_modem_info()
1812 static int get_serial_info(struct edgeport_port *edge_port, struct serial_struct * retinfo)  in get_serial_info()  argument
1822 	tmp.line		= edge_port->port->serial->minor;  in get_serial_info()
1823 	tmp.port		= edge_port->port->number;  in get_serial_info()
1826 	tmp.xmit_fifo_size	= edge_port->maxTxCredits;  in get_serial_info()
1848 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_ioctl()  local
1860 			return get_number_bytes_avail(edge_port, (unsigned int *) arg);  in edge_ioctl()
1865 			return get_lsr_info(edge_port, (unsigned int *) arg);  in edge_ioctl()
1872 			return set_modem_info(edge_port, cmd, (unsigned int *) arg);  in edge_ioctl()
1876 			return get_modem_info(edge_port, (unsigned int *) arg);  in edge_ioctl()
1880 			return get_serial_info(edge_port, (struct serial_struct *) arg);  in edge_ioctl()
1888 			cprev = edge_port->icount;  in edge_ioctl()
1890 				interruptible_sleep_on(&edge_port->delta_msr_wait);  in edge_ioctl()
1894 				cnow = edge_port->icount;  in edge_ioctl()
1910 			cnow = edge_port->icount;  in edge_ioctl()
1940 	struct edgeport_port *edge_port = (struct edgeport_port *)(port->private);  in edge_break()  local
1944 	edge_port->chaseResponsePending = TRUE;  in edge_break()
1947 	status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CHASE_PORT, 0);  in edge_break()
1950 		block_until_chase_response(edge_port);  in edge_break()
1952 		edge_port->chaseResponsePending = FALSE;  in edge_break()
1957 		status = send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_BREAK, 0);  in edge_break()
1960 		status = send_iosp_ext_cmd (edge_port, IOSP_CMD_CLEAR_BREAK, 0);  in edge_break()
1977 	struct edgeport_port *edge_port;  in process_rcvd_data()  local
2073 						edge_port = (struct edgeport_port *)port->private;  in process_rcvd_data()
2074 						if (edge_port->open) {  in process_rcvd_data()
2075 							tty = edge_port->port->tty;  in process_rcvd_data()
2088 							edge_port->icount.rx += rxLen;  in process_rcvd_data()
2120 	struct edgeport_port *edge_port;  in process_rcvd_status()  local
2128 	edge_port = (struct edgeport_port *)port->private;  in process_rcvd_status()
2129 	if (edge_port == NULL) {  in process_rcvd_status()
2146 				edge_port->chaseResponsePending = FALSE;  in process_rcvd_status()
2147 				wake_up_interruptible (&edge_port->wait_chase);  in process_rcvd_status()
2158 		edge_port->txCredits = GET_TX_BUFFER_SIZE(byte3);  in process_rcvd_status()
2159 		edge_port->maxTxCredits = edge_port->txCredits;  in process_rcvd_status()
2160 …tal MSR = %02x TxBufferSize = %d", __FUNCTION__, edge_serial->rxPort, byte2, edge_port->txCredits);  in process_rcvd_status()
2161 		handle_new_msr (edge_port, byte2);  in process_rcvd_status()
2164 		if (edge_port->port->tty)  in process_rcvd_status()
2165 			change_port_settings (edge_port, edge_port->port->tty->termios);  in process_rcvd_status()
2168 		edge_port->openPending = FALSE;  in process_rcvd_status()
2169 		edge_port->open = TRUE;  in process_rcvd_status()
2170 		wake_up_interruptible(&edge_port->wait_open);  in process_rcvd_status()
2177 	if ((!edge_port->open ) || (edge_port->closePending)) {  in process_rcvd_status()
2185 			handle_new_lsr (edge_port, FALSE, byte2, 0);  in process_rcvd_status()
2192 			handle_new_lsr (edge_port, TRUE, byte2, byte3);  in process_rcvd_status()
2205 			handle_new_msr(edge_port, byte2);  in process_rcvd_status()
2221 static void handle_new_msr(struct edgeport_port *edge_port, __u8 newMsr)  in handle_new_msr()  argument
2228 		icount = &edge_port->icount;  in handle_new_msr()
2243 		wake_up_interruptible(&edge_port->delta_msr_wait);  in handle_new_msr()
2247 	edge_port->shadowMSR = newMsr & 0xf0;  in handle_new_msr()
2257 static void handle_new_lsr(struct edgeport_port *edge_port, __u8 lsrData, __u8 lsr, __u8 data)  in handle_new_lsr()  argument
2264 	edge_port->shadowLSR = lsr;  in handle_new_lsr()
2276 	if (lsrData && edge_port->port->tty) {  in handle_new_lsr()
2277 		tty_insert_flip_char(edge_port->port->tty, data, 0);  in handle_new_lsr()
2278 		tty_flip_buffer_push(edge_port->port->tty);  in handle_new_lsr()
2282 	icount = &edge_port->icount;  in handle_new_lsr()
2439 static int send_iosp_ext_cmd (struct edgeport_port *edge_port, __u8 command, __u8 param)  in send_iosp_ext_cmd()  argument
2457 			  edge_port->port->number - edge_port->port->serial->minor,  in send_iosp_ext_cmd()
2460 	status = write_cmd_usb (edge_port, buffer, length);  in send_iosp_ext_cmd()
2474 static int write_cmd_usb (struct edgeport_port *edge_port, unsigned char *buffer, int length)  in write_cmd_usb()  argument
2476 	struct edgeport_serial *edge_serial = (struct edgeport_serial *)edge_port->port->serial->private;  in write_cmd_usb()
2493 		       buffer, length, edge_bulk_out_cmd_callback, edge_port);  in write_cmd_usb()
2498 	edge_port->commandPending = TRUE;  in write_cmd_usb()
2512 	while (timeout && edge_port->commandPending == TRUE) {  in write_cmd_usb()
2513 		timeout = interruptible_sleep_on_timeout (&edge_port->wait_command, timeout);  in write_cmd_usb()
2516 	if (edge_port->commandPending == TRUE) {  in write_cmd_usb()
2531 static int send_cmd_write_baud_rate (struct edgeport_port *edge_port, int baudRate)  in send_cmd_write_baud_rate()  argument
2538 	unsigned char number = edge_port->port->number - edge_port->port->serial->minor;  in send_cmd_write_baud_rate()
2540 	dbg("%s - port = %d, baud = %d", __FUNCTION__, edge_port->port->number, baudRate);  in send_cmd_write_baud_rate()
2564 	MAKE_CMD_WRITE_REG( &currCmd, &cmdLen, number, LCR, edge_port->shadowLCR);  in send_cmd_write_baud_rate()
2566 	status = write_cmd_usb(edge_port, cmdBuffer, cmdLen );  in send_cmd_write_baud_rate()
2625 static int send_cmd_write_uart_register (struct edgeport_port *edge_port, __u8 regNum, __u8 regValu…  in send_cmd_write_uart_register()  argument
2644 			    edge_port->port->number - edge_port->port->serial->minor,  in send_cmd_write_uart_register()
2647 	status = write_cmd_usb(edge_port, cmdBuffer, cmdLen);  in send_cmd_write_uart_register()
2662 static void change_port_settings (struct edgeport_port *edge_port, struct termios *old_termios)  in change_port_settings()  argument
2675 	dbg("%s - port %d", __FUNCTION__, edge_port->port->number);  in change_port_settings()
2677 	if ((!edge_port->open) &&  in change_port_settings()
2678 	    (!edge_port->openPending)) {  in change_port_settings()
2683 	tty = edge_port->port->tty;  in change_port_settings()
2736 		send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XON_CHAR, start_char);  in change_port_settings()
2737 		send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_XOFF_CHAR, stop_char);  in change_port_settings()
2757 	send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_RX_FLOW, rxFlow);  in change_port_settings()
2758 	send_iosp_ext_cmd (edge_port, IOSP_CMD_SET_TX_FLOW, txFlow);  in change_port_settings()
2761 	edge_port->shadowLCR &= ~(LCR_BITS_MASK | LCR_STOP_MASK | LCR_PAR_MASK);  in change_port_settings()
2762 	edge_port->shadowLCR |= (lData | lParity | lStop);  in change_port_settings()
2764 	edge_port->validDataMask = mask;  in change_port_settings()
2767 	status = send_cmd_write_uart_register(edge_port, LCR, edge_port->shadowLCR);  in change_port_settings()
2773 	edge_port->shadowMCR = MCR_MASTER_IE;  in change_port_settings()
2775 		edge_port->shadowMCR |= (MCR_DTR | MCR_RTS);  in change_port_settings()
2777 	status = send_cmd_write_uart_register(edge_port, MCR, edge_port->shadowMCR);  in change_port_settings()
2790 	status = send_cmd_write_baud_rate (edge_port, baud);  in change_port_settings()
2960 	struct edgeport_port *edge_port;  in edge_startup()  local
3023 		edge_port = kmalloc (sizeof(struct edgeport_port), GFP_KERNEL);  in edge_startup()
3024 		if (edge_port == NULL) {  in edge_startup()
3028 		memset (edge_port, 0, sizeof(struct edgeport_port));  in edge_startup()
3029 		edge_port->port = &serial->port[i];  in edge_startup()
3030 		serial->port[i].private = edge_port;  in edge_startup()