[deliverable/linux.git] / net / irda / ircomm / ircomm_tty_ioctl.c

/*********************************************************************
 *
 * Filename:      ircomm_tty_ioctl.c
 * Version:
 * Description:
 * Status:        Experimental.
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Thu Jun 10 14:39:09 1999
 * Modified at:   Wed Jan  5 14:45:43 2000
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 *
 *     Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
 *
 *     This program is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License as
 *     published by the Free Software Foundation; either version 2 of
 *     the License, or (at your option) any later version.
 *
 *     This program is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 *     GNU General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with this program; if not, see <http://www.gnu.org/licenses/>.
 *
 ********************************************************************/

#include <linux/init.h>
#include <linux/fs.h>
#include <linux/termios.h>
#include <linux/tty.h>
#include <linux/serial.h>

#include <asm/uaccess.h>

#include <net/irda/irda.h>
#include <net/irda/irmod.h>

#include <net/irda/ircomm_core.h>
#include <net/irda/ircomm_param.h>
#include <net/irda/ircomm_tty_attach.h>
#include <net/irda/ircomm_tty.h>

#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))

/*
 * Function ircomm_tty_change_speed (driver)
 *
 *    Change speed of the driver. If the remote device is a DCE, then this
 *    should make it change the speed of its serial port
 */
static void ircomm_tty_change_speed(struct ircomm_tty_cb *self,
		struct tty_struct *tty)
{
	unsigned int cflag, cval;
	int baud;

	if (!self->ircomm)
		return;

	cflag = tty->termios.c_cflag;

	/*  byte size and parity */
	switch (cflag & CSIZE) {
	case CS5: cval = IRCOMM_WSIZE_5; break;
	case CS6: cval = IRCOMM_WSIZE_6; break;
	case CS7: cval = IRCOMM_WSIZE_7; break;
	case CS8: cval = IRCOMM_WSIZE_8; break;
	default:  cval = IRCOMM_WSIZE_5; break;
	}
	if (cflag & CSTOPB)
		cval |= IRCOMM_2_STOP_BIT;

	if (cflag & PARENB)
		cval |= IRCOMM_PARITY_ENABLE;
	if (!(cflag & PARODD))
		cval |= IRCOMM_PARITY_EVEN;

	/* Determine divisor based on baud rate */
	baud = tty_get_baud_rate(tty);
	if (!baud)
		baud = 9600;	/* B0 transition handled in rs_set_termios */

	self->settings.data_rate = baud;
	ircomm_param_request(self, IRCOMM_DATA_RATE, FALSE);

	/* CTS flow control flag and modem status interrupts */
	if (cflag & CRTSCTS) {
		self->port.flags |= ASYNC_CTS_FLOW;
		self->settings.flow_control |= IRCOMM_RTS_CTS_IN;
		/* This got me. Bummer. Jean II */
		if (self->service_type == IRCOMM_3_WIRE_RAW)
			net_warn_ratelimited("%s(), enabling RTS/CTS on link that doesn't support it (3-wire-raw)\n",
					     __func__);
	} else {
		self->port.flags &= ~ASYNC_CTS_FLOW;
		self->settings.flow_control &= ~IRCOMM_RTS_CTS_IN;
	}
	if (cflag & CLOCAL)
		self->port.flags &= ~ASYNC_CHECK_CD;
	else
		self->port.flags |= ASYNC_CHECK_CD;
#if 0
	/*
	 * Set up parity check flag
	 */

	if (I_INPCK(self->tty))
		driver->read_status_mask |= LSR_FE | LSR_PE;
	if (I_BRKINT(driver->tty) || I_PARMRK(driver->tty))
		driver->read_status_mask |= LSR_BI;

	/*
	 * Characters to ignore
	 */
	driver->ignore_status_mask = 0;
	if (I_IGNPAR(driver->tty))
		driver->ignore_status_mask |= LSR_PE | LSR_FE;

	if (I_IGNBRK(self->tty)) {
		self->ignore_status_mask |= LSR_BI;
		/*
		 * If we're ignore parity and break indicators, ignore
		 * overruns too. (For real raw support).
		 */
		if (I_IGNPAR(self->tty))
			self->ignore_status_mask |= LSR_OE;
	}
#endif
	self->settings.data_format = cval;

	ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE);
	ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE);
}

/*
 * Function ircomm_tty_set_termios (tty, old_termios)
 *
 *    This routine allows the tty driver to be notified when device's
 *    termios settings have changed.  Note that a well-designed tty driver
 *    should be prepared to accept the case where old == NULL, and try to
 *    do something rational.
 */
void ircomm_tty_set_termios(struct tty_struct *tty,
			    struct ktermios *old_termios)
{
	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
	unsigned int cflag = tty->termios.c_cflag;

	if ((cflag == old_termios->c_cflag) &&
	    (RELEVANT_IFLAG(tty->termios.c_iflag) ==
	     RELEVANT_IFLAG(old_termios->c_iflag)))
	{
		return;
	}

	ircomm_tty_change_speed(self, tty);

	/* Handle transition to B0 status */
	if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
		self->settings.dte &= ~(IRCOMM_DTR|IRCOMM_RTS);
		ircomm_param_request(self, IRCOMM_DTE, TRUE);
	}

	/* Handle transition away from B0 status */
	if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
		self->settings.dte |= IRCOMM_DTR;
		if (!C_CRTSCTS(tty) || !test_bit(TTY_THROTTLED, &tty->flags))
			self->settings.dte |= IRCOMM_RTS;
		ircomm_param_request(self, IRCOMM_DTE, TRUE);
	}

	/* Handle turning off CRTSCTS */
	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
	{
		tty->hw_stopped = 0;
		ircomm_tty_start(tty);
	}
}

/*
 * Function ircomm_tty_tiocmget (tty)
 *
 *
 *
 */
int ircomm_tty_tiocmget(struct tty_struct *tty)
{
	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
	unsigned int result;

	if (tty->flags & (1 << TTY_IO_ERROR))
		return -EIO;

	result =  ((self->settings.dte & IRCOMM_RTS) ? TIOCM_RTS : 0)
		| ((self->settings.dte & IRCOMM_DTR) ? TIOCM_DTR : 0)
		| ((self->settings.dce & IRCOMM_CD)  ? TIOCM_CAR : 0)
		| ((self->settings.dce & IRCOMM_RI)  ? TIOCM_RNG : 0)
		| ((self->settings.dce & IRCOMM_DSR) ? TIOCM_DSR : 0)
		| ((self->settings.dce & IRCOMM_CTS) ? TIOCM_CTS : 0);
	return result;
}

/*
 * Function ircomm_tty_tiocmset (tty, set, clear)
 *
 *
 *
 */
int ircomm_tty_tiocmset(struct tty_struct *tty,
			unsigned int set, unsigned int clear)
{
	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;

	if (tty->flags & (1 << TTY_IO_ERROR))
		return -EIO;

	IRDA_ASSERT(self != NULL, return -1;);
	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);

	if (set & TIOCM_RTS)
		self->settings.dte |= IRCOMM_RTS;
	if (set & TIOCM_DTR)
		self->settings.dte |= IRCOMM_DTR;

	if (clear & TIOCM_RTS)
		self->settings.dte &= ~IRCOMM_RTS;
	if (clear & TIOCM_DTR)
		self->settings.dte &= ~IRCOMM_DTR;

	if ((set|clear) & TIOCM_RTS)
		self->settings.dte |= IRCOMM_DELTA_RTS;
	if ((set|clear) & TIOCM_DTR)
		self->settings.dte |= IRCOMM_DELTA_DTR;

	ircomm_param_request(self, IRCOMM_DTE, TRUE);

	return 0;
}

/*
 * Function get_serial_info (driver, retinfo)
 *
 *
 *
 */
static int ircomm_tty_get_serial_info(struct ircomm_tty_cb *self,
				      struct serial_struct __user *retinfo)
{
	struct serial_struct info;

	if (!retinfo)
		return -EFAULT;

	memset(&info, 0, sizeof(info));
	info.line = self->line;
	info.flags = self->port.flags;
	info.baud_base = self->settings.data_rate;
	info.close_delay = self->port.close_delay;
	info.closing_wait = self->port.closing_wait;

	/* For compatibility  */
	info.type = PORT_16550A;
	info.port = 0;
	info.irq = 0;
	info.xmit_fifo_size = 0;
	info.hub6 = 0;
	info.custom_divisor = 0;

	if (copy_to_user(retinfo, &info, sizeof(*retinfo)))
		return -EFAULT;

	return 0;
}

/*
 * Function set_serial_info (driver, new_info)
 *
 *
 *
 */
static int ircomm_tty_set_serial_info(struct ircomm_tty_cb *self,
				      struct serial_struct __user *new_info)
{
#if 0
	struct serial_struct new_serial;
	struct ircomm_tty_cb old_state, *state;

	if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
		return -EFAULT;


	state = self
	old_state = *self;

	if (!capable(CAP_SYS_ADMIN)) {
		if ((new_serial.baud_base != state->settings.data_rate) ||
		    (new_serial.close_delay != state->close_delay) ||
		    ((new_serial.flags & ~ASYNC_USR_MASK) !=
		     (self->flags & ~ASYNC_USR_MASK)))
			return -EPERM;
		state->flags = ((state->flags & ~ASYNC_USR_MASK) |
				 (new_serial.flags & ASYNC_USR_MASK));
		self->flags = ((self->flags & ~ASYNC_USR_MASK) |
			       (new_serial.flags & ASYNC_USR_MASK));
		/* self->custom_divisor = new_serial.custom_divisor; */
		goto check_and_exit;
	}

	/*
	 * OK, past this point, all the error checking has been done.
	 * At this point, we start making changes.....
	 */

	if (self->settings.data_rate != new_serial.baud_base) {
		self->settings.data_rate = new_serial.baud_base;
		ircomm_param_request(self, IRCOMM_DATA_RATE, TRUE);
	}

	self->close_delay = new_serial.close_delay * HZ/100;
	self->closing_wait = new_serial.closing_wait * HZ/100;
	/* self->custom_divisor = new_serial.custom_divisor; */

	self->flags = ((self->flags & ~ASYNC_FLAGS) |
		       (new_serial.flags & ASYNC_FLAGS));
	self->tty->low_latency = (self->flags & ASYNC_LOW_LATENCY) ? 1 : 0;

 check_and_exit:

	if (self->flags & ASYNC_INITIALIZED) {
		if (((old_state.flags & ASYNC_SPD_MASK) !=
		     (self->flags & ASYNC_SPD_MASK)) ||
		    (old_driver.custom_divisor != driver->custom_divisor)) {
			if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
				driver->tty->alt_speed = 57600;
			if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
				driver->tty->alt_speed = 115200;
			if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
				driver->tty->alt_speed = 230400;
			if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
				driver->tty->alt_speed = 460800;
			ircomm_tty_change_speed(driver);
		}
	}
#endif
	return 0;
}

/*
 * Function ircomm_tty_ioctl (tty, cmd, arg)
 *
 *
 *
 */
int ircomm_tty_ioctl(struct tty_struct *tty,
		     unsigned int cmd, unsigned long arg)
{
	struct ircomm_tty_cb *self = (struct ircomm_tty_cb *) tty->driver_data;
	int ret = 0;

	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
	    (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
	    (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
		if (tty->flags & (1 << TTY_IO_ERROR))
		    return -EIO;
	}

	switch (cmd) {
	case TIOCGSERIAL:
		ret = ircomm_tty_get_serial_info(self, (struct serial_struct __user *) arg);
		break;
	case TIOCSSERIAL:
		ret = ircomm_tty_set_serial_info(self, (struct serial_struct __user *) arg);
		break;
	case TIOCMIWAIT:
		pr_debug("(), TIOCMIWAIT, not impl!\n");
		break;

	case TIOCGICOUNT:
		pr_debug("%s(), TIOCGICOUNT not impl!\n", __func__);
#if 0
		save_flags(flags); cli();
		cnow = driver->icount;
		restore_flags(flags);
		p_cuser = (struct serial_icounter_struct __user *) arg;
		if (put_user(cnow.cts, &p_cuser->cts) ||
		    put_user(cnow.dsr, &p_cuser->dsr) ||
		    put_user(cnow.rng, &p_cuser->rng) ||
		    put_user(cnow.dcd, &p_cuser->dcd) ||
		    put_user(cnow.rx, &p_cuser->rx) ||
		    put_user(cnow.tx, &p_cuser->tx) ||
		    put_user(cnow.frame, &p_cuser->frame) ||
		    put_user(cnow.overrun, &p_cuser->overrun) ||
		    put_user(cnow.parity, &p_cuser->parity) ||
		    put_user(cnow.brk, &p_cuser->brk) ||
		    put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
			return -EFAULT;
#endif
		return 0;
	default:
		ret = -ENOIOCTLCMD;  /* ioctls which we must ignore */
	}
	return ret;
}
Commit	Line	Data
1da177e4	1	/*********************************************************************
6819bc2e	2	*
1da177e4	3	* Filename: ircomm_tty_ioctl.c
6819bc2e YH	4	* Version:
6819bc2e YH	5	* Description:
1da177e4 LT	6	* Status: Experimental.
	7	* Author: Dag Brattli <dagb@cs.uit.no>
	8	* Created at: Thu Jun 10 14:39:09 1999
	9	* Modified at: Wed Jan 5 14:45:43 2000
	10	* Modified by: Dag Brattli <dagb@cs.uit.no>
6819bc2e	11	*
1da177e4	12	* Copyright (c) 1999-2000 Dag Brattli, All Rights Reserved.
6819bc2e YH	13	*
	14	* This program is free software; you can redistribute it and/or
	15	* modify it under the terms of the GNU General Public License as
	16	* published by the Free Software Foundation; either version 2 of
1da177e4	17	* the License, or (at your option) any later version.
6819bc2e	18	*
1da177e4 LT	19	* This program is distributed in the hope that it will be useful,
	20	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	21	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	22	* GNU General Public License for more details.
6819bc2e YH	23	*
6819bc2e YH	24	* You should have received a copy of the GNU General Public License
d3770509	25	* along with this program; if not, see <http://www.gnu.org/licenses/>.
6819bc2e	26	*
1da177e4 LT	27	********************************************************************/
	28
	29	#include <linux/init.h>
	30	#include <linux/fs.h>
1da177e4 LT	31	#include <linux/termios.h>
	32	#include <linux/tty.h>
	33	#include <linux/serial.h>
	34
	35	#include <asm/uaccess.h>
	36
	37	#include <net/irda/irda.h>
	38	#include <net/irda/irmod.h>
	39
	40	#include <net/irda/ircomm_core.h>
	41	#include <net/irda/ircomm_param.h>
	42	#include <net/irda/ircomm_tty_attach.h>
	43	#include <net/irda/ircomm_tty.h>
	44
	45	#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK\|BRKINT\|IGNPAR\|PARMRK\|INPCK))
	46
	47	/*
	48	* Function ircomm_tty_change_speed (driver)
	49	*
	50	* Change speed of the driver. If the remote device is a DCE, then this
	51	* should make it change the speed of its serial port
	52	*/
62f228ac JS	53	static void ircomm_tty_change_speed(struct ircomm_tty_cb *self,
62f228ac JS	54	struct tty_struct *tty)
1da177e4	55	{
95c96174	56	unsigned int cflag, cval;
1da177e4 LT	57	int baud;
1da177e4 LT	58
62f228ac	59	if (!self->ircomm)
1da177e4 LT	60	return;
1da177e4 LT	61
adc8d746	62	cflag = tty->termios.c_cflag;
1da177e4 LT	63
	64	/* byte size and parity */
	65	switch (cflag & CSIZE) {
	66	case CS5: cval = IRCOMM_WSIZE_5; break;
	67	case CS6: cval = IRCOMM_WSIZE_6; break;
	68	case CS7: cval = IRCOMM_WSIZE_7; break;
	69	case CS8: cval = IRCOMM_WSIZE_8; break;
	70	default: cval = IRCOMM_WSIZE_5; break;
	71	}
	72	if (cflag & CSTOPB)
	73	cval \|= IRCOMM_2_STOP_BIT;
6819bc2e	74
1da177e4 LT	75	if (cflag & PARENB)
	76	cval \|= IRCOMM_PARITY_ENABLE;
	77	if (!(cflag & PARODD))
	78	cval \|= IRCOMM_PARITY_EVEN;
	79
	80	/* Determine divisor based on baud rate */
62f228ac	81	baud = tty_get_baud_rate(tty);
1da177e4 LT	82	if (!baud)
	83	baud = 9600; /* B0 transition handled in rs_set_termios */
	84
	85	self->settings.data_rate = baud;
	86	ircomm_param_request(self, IRCOMM_DATA_RATE, FALSE);
6819bc2e	87
1da177e4 LT	88	/* CTS flow control flag and modem status interrupts */
1da177e4 LT	89	if (cflag & CRTSCTS) {
849d5a99	90	self->port.flags \|= ASYNC_CTS_FLOW;
1da177e4 LT	91	self->settings.flow_control \|= IRCOMM_RTS_CTS_IN;
	92	/* This got me. Bummer. Jean II */
	93	if (self->service_type == IRCOMM_3_WIRE_RAW)
6c91023d JP	94	net_warn_ratelimited("%s(), enabling RTS/CTS on link that doesn't support it (3-wire-raw)\n",
6c91023d JP	95	__func__);
1da177e4	96	} else {
849d5a99	97	self->port.flags &= ~ASYNC_CTS_FLOW;
1da177e4 LT	98	self->settings.flow_control &= ~IRCOMM_RTS_CTS_IN;
	99	}
	100	if (cflag & CLOCAL)
849d5a99	101	self->port.flags &= ~ASYNC_CHECK_CD;
1da177e4	102	else
849d5a99	103	self->port.flags \|= ASYNC_CHECK_CD;
6819bc2e	104	#if 0
1da177e4 LT	105	/*
	106	* Set up parity check flag
	107	*/
	108
	109	if (I_INPCK(self->tty))
	110	driver->read_status_mask \|= LSR_FE \| LSR_PE;
	111	if (I_BRKINT(driver->tty) \|\| I_PARMRK(driver->tty))
	112	driver->read_status_mask \|= LSR_BI;
6819bc2e	113
1da177e4 LT	114	/*
	115	* Characters to ignore
	116	*/
	117	driver->ignore_status_mask = 0;
	118	if (I_IGNPAR(driver->tty))
	119	driver->ignore_status_mask \|= LSR_PE \| LSR_FE;
	120
	121	if (I_IGNBRK(self->tty)) {
	122	self->ignore_status_mask \|= LSR_BI;
	123	/*
6819bc2e	124	* If we're ignore parity and break indicators, ignore
1da177e4 LT	125	* overruns too. (For real raw support).
1da177e4 LT	126	*/
6819bc2e	127	if (I_IGNPAR(self->tty))
1da177e4 LT	128	self->ignore_status_mask \|= LSR_OE;
	129	}
	130	#endif
	131	self->settings.data_format = cval;
	132
	133	ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE);
6819bc2e	134	ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE);
1da177e4 LT	135	}
	136
	137	/*
	138	* Function ircomm_tty_set_termios (tty, old_termios)
	139	*
	140	* This routine allows the tty driver to be notified when device's
	141	* termios settings have changed. Note that a well-designed tty driver
	142	* should be prepared to accept the case where old == NULL, and try to
	143	* do something rational.
	144	*/
6819bc2e	145	void ircomm_tty_set_termios(struct tty_struct *tty,
edc6afc5	146	struct ktermios *old_termios)
1da177e4 LT	147	{
1da177e4 LT	148	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
adc8d746	149	unsigned int cflag = tty->termios.c_cflag;
1da177e4	150
6819bc2e	151	if ((cflag == old_termios->c_cflag) &&
adc8d746	152	(RELEVANT_IFLAG(tty->termios.c_iflag) ==
1da177e4 LT	153	RELEVANT_IFLAG(old_termios->c_iflag)))
	154	{
	155	return;
	156	}
	157
62f228ac	158	ircomm_tty_change_speed(self, tty);
1da177e4 LT	159
1da177e4 LT	160	/* Handle transition to B0 status */
9db276f8	161	if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
1da177e4 LT	162	self->settings.dte &= ~(IRCOMM_DTR\|IRCOMM_RTS);
	163	ircomm_param_request(self, IRCOMM_DTE, TRUE);
	164	}
6819bc2e	165
1da177e4	166	/* Handle transition away from B0 status */
9db276f8	167	if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
1da177e4	168	self->settings.dte \|= IRCOMM_DTR;
9db276f8	169	if (!C_CRTSCTS(tty) \|\| !test_bit(TTY_THROTTLED, &tty->flags))
1da177e4	170	self->settings.dte \|= IRCOMM_RTS;
1da177e4 LT	171	ircomm_param_request(self, IRCOMM_DTE, TRUE);
1da177e4 LT	172	}
6819bc2e	173
1da177e4	174	/* Handle turning off CRTSCTS */
9db276f8	175	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
1da177e4 LT	176	{
	177	tty->hw_stopped = 0;
	178	ircomm_tty_start(tty);
	179	}
	180	}
	181
	182	/*
60b33c13	183	* Function ircomm_tty_tiocmget (tty)
1da177e4	184	*
6819bc2e	185	*
1da177e4 LT	186	*
1da177e4 LT	187	*/
60b33c13	188	int ircomm_tty_tiocmget(struct tty_struct *tty)
1da177e4 LT	189	{
	190	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	191	unsigned int result;
	192
1da177e4 LT	193	if (tty->flags & (1 << TTY_IO_ERROR))
	194	return -EIO;
	195
	196	result = ((self->settings.dte & IRCOMM_RTS) ? TIOCM_RTS : 0)
	197	\| ((self->settings.dte & IRCOMM_DTR) ? TIOCM_DTR : 0)
	198	\| ((self->settings.dce & IRCOMM_CD) ? TIOCM_CAR : 0)
	199	\| ((self->settings.dce & IRCOMM_RI) ? TIOCM_RNG : 0)
	200	\| ((self->settings.dce & IRCOMM_DSR) ? TIOCM_DSR : 0)
	201	\| ((self->settings.dce & IRCOMM_CTS) ? TIOCM_CTS : 0);
	202	return result;
	203	}
	204
	205	/*
20b9d177	206	* Function ircomm_tty_tiocmset (tty, set, clear)
1da177e4	207	*
6819bc2e	208	*
1da177e4 LT	209	*
1da177e4 LT	210	*/
20b9d177	211	int ircomm_tty_tiocmset(struct tty_struct *tty,
1da177e4	212	unsigned int set, unsigned int clear)
6819bc2e	213	{
1da177e4 LT	214	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
1da177e4 LT	215
1da177e4 LT	216	if (tty->flags & (1 << TTY_IO_ERROR))
	217	return -EIO;
	218
	219	IRDA_ASSERT(self != NULL, return -1;);
	220	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
	221
	222	if (set & TIOCM_RTS)
	223	self->settings.dte \|= IRCOMM_RTS;
	224	if (set & TIOCM_DTR)
	225	self->settings.dte \|= IRCOMM_DTR;
	226
	227	if (clear & TIOCM_RTS)
	228	self->settings.dte &= ~IRCOMM_RTS;
	229	if (clear & TIOCM_DTR)
	230	self->settings.dte &= ~IRCOMM_DTR;
	231
	232	if ((set\|clear) & TIOCM_RTS)
	233	self->settings.dte \|= IRCOMM_DELTA_RTS;
	234	if ((set\|clear) & TIOCM_DTR)
	235	self->settings.dte \|= IRCOMM_DELTA_DTR;
	236
	237	ircomm_param_request(self, IRCOMM_DTE, TRUE);
6819bc2e	238
1da177e4 LT	239	return 0;
	240	}
	241
	242	/*
	243	* Function get_serial_info (driver, retinfo)
	244	*
6819bc2e	245	*
1da177e4 LT	246	*
	247	*/
	248	static int ircomm_tty_get_serial_info(struct ircomm_tty_cb *self,
	249	struct serial_struct __user *retinfo)
	250	{
	251	struct serial_struct info;
6819bc2e	252
1da177e4 LT	253	if (!retinfo)
	254	return -EFAULT;
	255
1da177e4 LT	256	memset(&info, 0, sizeof(info));
1da177e4 LT	257	info.line = self->line;
849d5a99	258	info.flags = self->port.flags;
1da177e4	259	info.baud_base = self->settings.data_rate;
2a0213cb JS	260	info.close_delay = self->port.close_delay;
2a0213cb JS	261	info.closing_wait = self->port.closing_wait;
1da177e4 LT	262
1da177e4 LT	263	/* For compatibility */
6819bc2e YH	264	info.type = PORT_16550A;
	265	info.port = 0;
	266	info.irq = 0;
1da177e4	267	info.xmit_fifo_size = 0;
6819bc2e	268	info.hub6 = 0;
1da177e4 LT	269	info.custom_divisor = 0;
	270
	271	if (copy_to_user(retinfo, &info, sizeof(*retinfo)))
	272	return -EFAULT;
	273
	274	return 0;
	275	}
	276
	277	/*
	278	* Function set_serial_info (driver, new_info)
	279	*
6819bc2e	280	*
1da177e4 LT	281	*
	282	*/
	283	static int ircomm_tty_set_serial_info(struct ircomm_tty_cb *self,
	284	struct serial_struct __user *new_info)
	285	{
	286	#if 0
	287	struct serial_struct new_serial;
	288	struct ircomm_tty_cb old_state, *state;
	289
1da177e4 LT	290	if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
	291	return -EFAULT;
	292
	293
	294	state = self
	295	old_state = *self;
6819bc2e	296
1da177e4 LT	297	if (!capable(CAP_SYS_ADMIN)) {
	298	if ((new_serial.baud_base != state->settings.data_rate) \|\|
	299	(new_serial.close_delay != state->close_delay) \|\|
	300	((new_serial.flags & ~ASYNC_USR_MASK) !=
	301	(self->flags & ~ASYNC_USR_MASK)))
	302	return -EPERM;
	303	state->flags = ((state->flags & ~ASYNC_USR_MASK) \|
	304	(new_serial.flags & ASYNC_USR_MASK));
	305	self->flags = ((self->flags & ~ASYNC_USR_MASK) \|
	306	(new_serial.flags & ASYNC_USR_MASK));
	307	/* self->custom_divisor = new_serial.custom_divisor; */
	308	goto check_and_exit;
	309	}
	310
	311	/*
	312	* OK, past this point, all the error checking has been done.
	313	* At this point, we start making changes.....
	314	*/
	315
	316	if (self->settings.data_rate != new_serial.baud_base) {
	317	self->settings.data_rate = new_serial.baud_base;
	318	ircomm_param_request(self, IRCOMM_DATA_RATE, TRUE);
	319	}
	320
	321	self->close_delay = new_serial.close_delay * HZ/100;
	322	self->closing_wait = new_serial.closing_wait * HZ/100;
	323	/* self->custom_divisor = new_serial.custom_divisor; */
	324
	325	self->flags = ((self->flags & ~ASYNC_FLAGS) \|
	326	(new_serial.flags & ASYNC_FLAGS));
	327	self->tty->low_latency = (self->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
	328
	329	check_and_exit:
	330
	331	if (self->flags & ASYNC_INITIALIZED) {
	332	if (((old_state.flags & ASYNC_SPD_MASK) !=
	333	(self->flags & ASYNC_SPD_MASK)) \|\|
	334	(old_driver.custom_divisor != driver->custom_divisor)) {
	335	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
	336	driver->tty->alt_speed = 57600;
	337	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
	338	driver->tty->alt_speed = 115200;
	339	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
	340	driver->tty->alt_speed = 230400;
	341	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
	342	driver->tty->alt_speed = 460800;
	343	ircomm_tty_change_speed(driver);
	344	}
	345	}
	346	#endif
	347	return 0;
	348	}
	349
	350	/*
6caa76b7	351	* Function ircomm_tty_ioctl (tty, cmd, arg)
1da177e4	352	*
6819bc2e	353	*
1da177e4 LT	354	*
1da177e4 LT	355	*/
6caa76b7	356	int ircomm_tty_ioctl(struct tty_struct *tty,
1da177e4 LT	357	unsigned int cmd, unsigned long arg)
	358	{
	359	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	360	int ret = 0;
	361
1da177e4 LT	362	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
	363	(cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
	364	(cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
	365	if (tty->flags & (1 << TTY_IO_ERROR))
	366	return -EIO;
	367	}
	368
	369	switch (cmd) {
	370	case TIOCGSERIAL:
	371	ret = ircomm_tty_get_serial_info(self, (struct serial_struct __user *) arg);
	372	break;
	373	case TIOCSSERIAL:
	374	ret = ircomm_tty_set_serial_info(self, (struct serial_struct __user *) arg);
	375	break;
	376	case TIOCMIWAIT:
955a9d20	377	pr_debug("(), TIOCMIWAIT, not impl!\n");
1da177e4 LT	378	break;
	379
	380	case TIOCGICOUNT:
955a9d20	381	pr_debug("%s(), TIOCGICOUNT not impl!\n", __func__);
1da177e4 LT	382	#if 0
	383	save_flags(flags); cli();
	384	cnow = driver->icount;
	385	restore_flags(flags);
	386	p_cuser = (struct serial_icounter_struct __user *) arg;
	387	if (put_user(cnow.cts, &p_cuser->cts) \|\|
	388	put_user(cnow.dsr, &p_cuser->dsr) \|\|
	389	put_user(cnow.rng, &p_cuser->rng) \|\|
	390	put_user(cnow.dcd, &p_cuser->dcd) \|\|
	391	put_user(cnow.rx, &p_cuser->rx) \|\|
	392	put_user(cnow.tx, &p_cuser->tx) \|\|
	393	put_user(cnow.frame, &p_cuser->frame) \|\|
	394	put_user(cnow.overrun, &p_cuser->overrun) \|\|
	395	put_user(cnow.parity, &p_cuser->parity) \|\|
	396	put_user(cnow.brk, &p_cuser->brk) \|\|
	397	put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
	398	return -EFAULT;
6819bc2e	399	#endif
1da177e4 LT	400	return 0;
	401	default:
	402	ret = -ENOIOCTLCMD; /* ioctls which we must ignore */
	403	}
	404	return ret;
	405	}
	406
	407
	408