[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 (!(tty->termios.c_cflag & CRTSCTS) ||
		    !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) &&
	    !(tty->termios.c_cflag & CRTSCTS))
	{
		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
	160	/* Handle transition to B0 status */
	161	if ((old_termios->c_cflag & CBAUD) &&
	162	!(cflag & CBAUD)) {
	163	self->settings.dte &= ~(IRCOMM_DTR\|IRCOMM_RTS);
	164	ircomm_param_request(self, IRCOMM_DTE, TRUE);
	165	}
6819bc2e	166
1da177e4 LT	167	/* Handle transition away from B0 status */
	168	if (!(old_termios->c_cflag & CBAUD) &&
	169	(cflag & CBAUD)) {
	170	self->settings.dte \|= IRCOMM_DTR;
adc8d746	171	if (!(tty->termios.c_cflag & CRTSCTS) \|\|
1da177e4 LT	172	!test_bit(TTY_THROTTLED, &tty->flags)) {
	173	self->settings.dte \|= IRCOMM_RTS;
	174	}
	175	ircomm_param_request(self, IRCOMM_DTE, TRUE);
	176	}
6819bc2e	177
1da177e4 LT	178	/* Handle turning off CRTSCTS */
1da177e4 LT	179	if ((old_termios->c_cflag & CRTSCTS) &&
adc8d746	180	!(tty->termios.c_cflag & CRTSCTS))
1da177e4 LT	181	{
	182	tty->hw_stopped = 0;
	183	ircomm_tty_start(tty);
	184	}
	185	}
	186
	187	/*
60b33c13	188	* Function ircomm_tty_tiocmget (tty)
1da177e4	189	*
6819bc2e	190	*
1da177e4 LT	191	*
1da177e4 LT	192	*/
60b33c13	193	int ircomm_tty_tiocmget(struct tty_struct *tty)
1da177e4 LT	194	{
	195	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	196	unsigned int result;
	197
1da177e4 LT	198	if (tty->flags & (1 << TTY_IO_ERROR))
	199	return -EIO;
	200
	201	result = ((self->settings.dte & IRCOMM_RTS) ? TIOCM_RTS : 0)
	202	\| ((self->settings.dte & IRCOMM_DTR) ? TIOCM_DTR : 0)
	203	\| ((self->settings.dce & IRCOMM_CD) ? TIOCM_CAR : 0)
	204	\| ((self->settings.dce & IRCOMM_RI) ? TIOCM_RNG : 0)
	205	\| ((self->settings.dce & IRCOMM_DSR) ? TIOCM_DSR : 0)
	206	\| ((self->settings.dce & IRCOMM_CTS) ? TIOCM_CTS : 0);
	207	return result;
	208	}
	209
	210	/*
20b9d177	211	* Function ircomm_tty_tiocmset (tty, set, clear)
1da177e4	212	*
6819bc2e	213	*
1da177e4 LT	214	*
1da177e4 LT	215	*/
20b9d177	216	int ircomm_tty_tiocmset(struct tty_struct *tty,
1da177e4	217	unsigned int set, unsigned int clear)
6819bc2e	218	{
1da177e4 LT	219	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
1da177e4 LT	220
1da177e4 LT	221	if (tty->flags & (1 << TTY_IO_ERROR))
	222	return -EIO;
	223
	224	IRDA_ASSERT(self != NULL, return -1;);
	225	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
	226
	227	if (set & TIOCM_RTS)
	228	self->settings.dte \|= IRCOMM_RTS;
	229	if (set & TIOCM_DTR)
	230	self->settings.dte \|= IRCOMM_DTR;
	231
	232	if (clear & TIOCM_RTS)
	233	self->settings.dte &= ~IRCOMM_RTS;
	234	if (clear & TIOCM_DTR)
	235	self->settings.dte &= ~IRCOMM_DTR;
	236
	237	if ((set\|clear) & TIOCM_RTS)
	238	self->settings.dte \|= IRCOMM_DELTA_RTS;
	239	if ((set\|clear) & TIOCM_DTR)
	240	self->settings.dte \|= IRCOMM_DELTA_DTR;
	241
	242	ircomm_param_request(self, IRCOMM_DTE, TRUE);
6819bc2e	243
1da177e4 LT	244	return 0;
	245	}
	246
	247	/*
	248	* Function get_serial_info (driver, retinfo)
	249	*
6819bc2e	250	*
1da177e4 LT	251	*
	252	*/
	253	static int ircomm_tty_get_serial_info(struct ircomm_tty_cb *self,
	254	struct serial_struct __user *retinfo)
	255	{
	256	struct serial_struct info;
6819bc2e	257
1da177e4 LT	258	if (!retinfo)
	259	return -EFAULT;
	260
1da177e4 LT	261	memset(&info, 0, sizeof(info));
1da177e4 LT	262	info.line = self->line;
849d5a99	263	info.flags = self->port.flags;
1da177e4	264	info.baud_base = self->settings.data_rate;
2a0213cb JS	265	info.close_delay = self->port.close_delay;
2a0213cb JS	266	info.closing_wait = self->port.closing_wait;
1da177e4 LT	267
1da177e4 LT	268	/* For compatibility */
6819bc2e YH	269	info.type = PORT_16550A;
	270	info.port = 0;
	271	info.irq = 0;
1da177e4	272	info.xmit_fifo_size = 0;
6819bc2e	273	info.hub6 = 0;
1da177e4 LT	274	info.custom_divisor = 0;
	275
	276	if (copy_to_user(retinfo, &info, sizeof(*retinfo)))
	277	return -EFAULT;
	278
	279	return 0;
	280	}
	281
	282	/*
	283	* Function set_serial_info (driver, new_info)
	284	*
6819bc2e	285	*
1da177e4 LT	286	*
	287	*/
	288	static int ircomm_tty_set_serial_info(struct ircomm_tty_cb *self,
	289	struct serial_struct __user *new_info)
	290	{
	291	#if 0
	292	struct serial_struct new_serial;
	293	struct ircomm_tty_cb old_state, *state;
	294
1da177e4 LT	295	if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
	296	return -EFAULT;
	297
	298
	299	state = self
	300	old_state = *self;
6819bc2e	301
1da177e4 LT	302	if (!capable(CAP_SYS_ADMIN)) {
	303	if ((new_serial.baud_base != state->settings.data_rate) \|\|
	304	(new_serial.close_delay != state->close_delay) \|\|
	305	((new_serial.flags & ~ASYNC_USR_MASK) !=
	306	(self->flags & ~ASYNC_USR_MASK)))
	307	return -EPERM;
	308	state->flags = ((state->flags & ~ASYNC_USR_MASK) \|
	309	(new_serial.flags & ASYNC_USR_MASK));
	310	self->flags = ((self->flags & ~ASYNC_USR_MASK) \|
	311	(new_serial.flags & ASYNC_USR_MASK));
	312	/* self->custom_divisor = new_serial.custom_divisor; */
	313	goto check_and_exit;
	314	}
	315
	316	/*
	317	* OK, past this point, all the error checking has been done.
	318	* At this point, we start making changes.....
	319	*/
	320
	321	if (self->settings.data_rate != new_serial.baud_base) {
	322	self->settings.data_rate = new_serial.baud_base;
	323	ircomm_param_request(self, IRCOMM_DATA_RATE, TRUE);
	324	}
	325
	326	self->close_delay = new_serial.close_delay * HZ/100;
	327	self->closing_wait = new_serial.closing_wait * HZ/100;
	328	/* self->custom_divisor = new_serial.custom_divisor; */
	329
	330	self->flags = ((self->flags & ~ASYNC_FLAGS) \|
	331	(new_serial.flags & ASYNC_FLAGS));
	332	self->tty->low_latency = (self->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
	333
	334	check_and_exit:
	335
	336	if (self->flags & ASYNC_INITIALIZED) {
	337	if (((old_state.flags & ASYNC_SPD_MASK) !=
	338	(self->flags & ASYNC_SPD_MASK)) \|\|
	339	(old_driver.custom_divisor != driver->custom_divisor)) {
	340	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
	341	driver->tty->alt_speed = 57600;
	342	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
	343	driver->tty->alt_speed = 115200;
	344	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
	345	driver->tty->alt_speed = 230400;
	346	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
	347	driver->tty->alt_speed = 460800;
	348	ircomm_tty_change_speed(driver);
	349	}
	350	}
	351	#endif
	352	return 0;
	353	}
	354
	355	/*
6caa76b7	356	* Function ircomm_tty_ioctl (tty, cmd, arg)
1da177e4	357	*
6819bc2e	358	*
1da177e4 LT	359	*
1da177e4 LT	360	*/
6caa76b7	361	int ircomm_tty_ioctl(struct tty_struct *tty,
1da177e4 LT	362	unsigned int cmd, unsigned long arg)
	363	{
	364	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	365	int ret = 0;
	366
1da177e4 LT	367	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
	368	(cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
	369	(cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
	370	if (tty->flags & (1 << TTY_IO_ERROR))
	371	return -EIO;
	372	}
	373
	374	switch (cmd) {
	375	case TIOCGSERIAL:
	376	ret = ircomm_tty_get_serial_info(self, (struct serial_struct __user *) arg);
	377	break;
	378	case TIOCSSERIAL:
	379	ret = ircomm_tty_set_serial_info(self, (struct serial_struct __user *) arg);
	380	break;
	381	case TIOCMIWAIT:
955a9d20	382	pr_debug("(), TIOCMIWAIT, not impl!\n");
1da177e4 LT	383	break;
	384
	385	case TIOCGICOUNT:
955a9d20	386	pr_debug("%s(), TIOCGICOUNT not impl!\n", __func__);
1da177e4 LT	387	#if 0
	388	save_flags(flags); cli();
	389	cnow = driver->icount;
	390	restore_flags(flags);
	391	p_cuser = (struct serial_icounter_struct __user *) arg;
	392	if (put_user(cnow.cts, &p_cuser->cts) \|\|
	393	put_user(cnow.dsr, &p_cuser->dsr) \|\|
	394	put_user(cnow.rng, &p_cuser->rng) \|\|
	395	put_user(cnow.dcd, &p_cuser->dcd) \|\|
	396	put_user(cnow.rx, &p_cuser->rx) \|\|
	397	put_user(cnow.tx, &p_cuser->tx) \|\|
	398	put_user(cnow.frame, &p_cuser->frame) \|\|
	399	put_user(cnow.overrun, &p_cuser->overrun) \|\|
	400	put_user(cnow.parity, &p_cuser->parity) \|\|
	401	put_user(cnow.brk, &p_cuser->brk) \|\|
	402	put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
	403	return -EFAULT;
6819bc2e	404	#endif
1da177e4 LT	405	return 0;
	406	default:
	407	ret = -ENOIOCTLCMD; /* ioctls which we must ignore */
	408	}
	409	return ret;
	410	}
	411
	412
	413