[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 */
	tty_port_set_cts_flow(&self->port, cflag & CRTSCTS);
	if (cflag & CRTSCTS) {
		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->settings.flow_control &= ~IRCOMM_RTS_CTS_IN;
	}
	tty_port_set_check_carrier(&self->port, ~cflag & CLOCAL);
#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) || !tty_throttled(tty))
			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_io_error(tty))
		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_io_error(tty))
		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;

	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;

	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 (tty_port_initialized(self)) {
		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_io_error(tty))
		    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	88	/* CTS flow control flag and modem status interrupts */
5604a98e	89	tty_port_set_cts_flow(&self->port, cflag & CRTSCTS);
1da177e4	90	if (cflag & CRTSCTS) {
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 {
1da177e4 LT	97	self->settings.flow_control &= ~IRCOMM_RTS_CTS_IN;
1da177e4 LT	98	}
2d68655d	99	tty_port_set_check_carrier(&self->port, ~cflag & CLOCAL);
6819bc2e	100	#if 0
1da177e4 LT	101	/*
	102	* Set up parity check flag
	103	*/
	104
	105	if (I_INPCK(self->tty))
	106	driver->read_status_mask \|= LSR_FE \| LSR_PE;
	107	if (I_BRKINT(driver->tty) \|\| I_PARMRK(driver->tty))
	108	driver->read_status_mask \|= LSR_BI;
6819bc2e	109
1da177e4 LT	110	/*
	111	* Characters to ignore
	112	*/
	113	driver->ignore_status_mask = 0;
	114	if (I_IGNPAR(driver->tty))
	115	driver->ignore_status_mask \|= LSR_PE \| LSR_FE;
	116
	117	if (I_IGNBRK(self->tty)) {
	118	self->ignore_status_mask \|= LSR_BI;
	119	/*
6819bc2e	120	* If we're ignore parity and break indicators, ignore
1da177e4 LT	121	* overruns too. (For real raw support).
1da177e4 LT	122	*/
6819bc2e	123	if (I_IGNPAR(self->tty))
1da177e4 LT	124	self->ignore_status_mask \|= LSR_OE;
	125	}
	126	#endif
	127	self->settings.data_format = cval;
	128
	129	ircomm_param_request(self, IRCOMM_DATA_FORMAT, FALSE);
6819bc2e	130	ircomm_param_request(self, IRCOMM_FLOW_CONTROL, TRUE);
1da177e4 LT	131	}
	132
	133	/*
	134	* Function ircomm_tty_set_termios (tty, old_termios)
	135	*
	136	* This routine allows the tty driver to be notified when device's
	137	* termios settings have changed. Note that a well-designed tty driver
	138	* should be prepared to accept the case where old == NULL, and try to
	139	* do something rational.
	140	*/
6819bc2e	141	void ircomm_tty_set_termios(struct tty_struct *tty,
edc6afc5	142	struct ktermios *old_termios)
1da177e4 LT	143	{
1da177e4 LT	144	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
adc8d746	145	unsigned int cflag = tty->termios.c_cflag;
1da177e4	146
6819bc2e	147	if ((cflag == old_termios->c_cflag) &&
adc8d746	148	(RELEVANT_IFLAG(tty->termios.c_iflag) ==
1da177e4 LT	149	RELEVANT_IFLAG(old_termios->c_iflag)))
	150	{
	151	return;
	152	}
	153
62f228ac	154	ircomm_tty_change_speed(self, tty);
1da177e4 LT	155
1da177e4 LT	156	/* Handle transition to B0 status */
9db276f8	157	if ((old_termios->c_cflag & CBAUD) && !(cflag & CBAUD)) {
1da177e4 LT	158	self->settings.dte &= ~(IRCOMM_DTR\|IRCOMM_RTS);
	159	ircomm_param_request(self, IRCOMM_DTE, TRUE);
	160	}
6819bc2e	161
1da177e4	162	/* Handle transition away from B0 status */
9db276f8	163	if (!(old_termios->c_cflag & CBAUD) && (cflag & CBAUD)) {
1da177e4	164	self->settings.dte \|= IRCOMM_DTR;
97ef38b8	165	if (!C_CRTSCTS(tty) \|\| !tty_throttled(tty))
1da177e4	166	self->settings.dte \|= IRCOMM_RTS;
1da177e4 LT	167	ircomm_param_request(self, IRCOMM_DTE, TRUE);
1da177e4 LT	168	}
6819bc2e	169
1da177e4	170	/* Handle turning off CRTSCTS */
9db276f8	171	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty))
1da177e4 LT	172	{
	173	tty->hw_stopped = 0;
	174	ircomm_tty_start(tty);
	175	}
	176	}
	177
	178	/*
60b33c13	179	* Function ircomm_tty_tiocmget (tty)
1da177e4	180	*
6819bc2e	181	*
1da177e4 LT	182	*
1da177e4 LT	183	*/
60b33c13	184	int ircomm_tty_tiocmget(struct tty_struct *tty)
1da177e4 LT	185	{
	186	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	187	unsigned int result;
	188
18900ca6	189	if (tty_io_error(tty))
1da177e4 LT	190	return -EIO;
	191
	192	result = ((self->settings.dte & IRCOMM_RTS) ? TIOCM_RTS : 0)
	193	\| ((self->settings.dte & IRCOMM_DTR) ? TIOCM_DTR : 0)
	194	\| ((self->settings.dce & IRCOMM_CD) ? TIOCM_CAR : 0)
	195	\| ((self->settings.dce & IRCOMM_RI) ? TIOCM_RNG : 0)
	196	\| ((self->settings.dce & IRCOMM_DSR) ? TIOCM_DSR : 0)
	197	\| ((self->settings.dce & IRCOMM_CTS) ? TIOCM_CTS : 0);
	198	return result;
	199	}
	200
	201	/*
20b9d177	202	* Function ircomm_tty_tiocmset (tty, set, clear)
1da177e4	203	*
6819bc2e	204	*
1da177e4 LT	205	*
1da177e4 LT	206	*/
20b9d177	207	int ircomm_tty_tiocmset(struct tty_struct *tty,
1da177e4	208	unsigned int set, unsigned int clear)
6819bc2e	209	{
1da177e4 LT	210	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
1da177e4 LT	211
18900ca6	212	if (tty_io_error(tty))
1da177e4 LT	213	return -EIO;
	214
	215	IRDA_ASSERT(self != NULL, return -1;);
	216	IRDA_ASSERT(self->magic == IRCOMM_TTY_MAGIC, return -1;);
	217
	218	if (set & TIOCM_RTS)
	219	self->settings.dte \|= IRCOMM_RTS;
	220	if (set & TIOCM_DTR)
	221	self->settings.dte \|= IRCOMM_DTR;
	222
	223	if (clear & TIOCM_RTS)
	224	self->settings.dte &= ~IRCOMM_RTS;
	225	if (clear & TIOCM_DTR)
	226	self->settings.dte &= ~IRCOMM_DTR;
	227
	228	if ((set\|clear) & TIOCM_RTS)
	229	self->settings.dte \|= IRCOMM_DELTA_RTS;
	230	if ((set\|clear) & TIOCM_DTR)
	231	self->settings.dte \|= IRCOMM_DELTA_DTR;
	232
	233	ircomm_param_request(self, IRCOMM_DTE, TRUE);
6819bc2e	234
1da177e4 LT	235	return 0;
	236	}
	237
	238	/*
	239	* Function get_serial_info (driver, retinfo)
	240	*
6819bc2e	241	*
1da177e4 LT	242	*
	243	*/
	244	static int ircomm_tty_get_serial_info(struct ircomm_tty_cb *self,
	245	struct serial_struct __user *retinfo)
	246	{
	247	struct serial_struct info;
6819bc2e	248
1da177e4 LT	249	memset(&info, 0, sizeof(info));
1da177e4 LT	250	info.line = self->line;
849d5a99	251	info.flags = self->port.flags;
1da177e4	252	info.baud_base = self->settings.data_rate;
2a0213cb JS	253	info.close_delay = self->port.close_delay;
2a0213cb JS	254	info.closing_wait = self->port.closing_wait;
1da177e4 LT	255
1da177e4 LT	256	/* For compatibility */
6819bc2e	257	info.type = PORT_16550A;
1da177e4 LT	258
	259	if (copy_to_user(retinfo, &info, sizeof(*retinfo)))
	260	return -EFAULT;
	261
	262	return 0;
	263	}
	264
	265	/*
	266	* Function set_serial_info (driver, new_info)
	267	*
6819bc2e	268	*
1da177e4 LT	269	*
	270	*/
	271	static int ircomm_tty_set_serial_info(struct ircomm_tty_cb *self,
	272	struct serial_struct __user *new_info)
	273	{
	274	#if 0
	275	struct serial_struct new_serial;
	276	struct ircomm_tty_cb old_state, *state;
	277
1da177e4 LT	278	if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
	279	return -EFAULT;
	280
	281
	282	state = self
	283	old_state = *self;
6819bc2e	284
1da177e4 LT	285	if (!capable(CAP_SYS_ADMIN)) {
	286	if ((new_serial.baud_base != state->settings.data_rate) \|\|
	287	(new_serial.close_delay != state->close_delay) \|\|
	288	((new_serial.flags & ~ASYNC_USR_MASK) !=
	289	(self->flags & ~ASYNC_USR_MASK)))
	290	return -EPERM;
	291	state->flags = ((state->flags & ~ASYNC_USR_MASK) \|
	292	(new_serial.flags & ASYNC_USR_MASK));
	293	self->flags = ((self->flags & ~ASYNC_USR_MASK) \|
	294	(new_serial.flags & ASYNC_USR_MASK));
	295	/* self->custom_divisor = new_serial.custom_divisor; */
	296	goto check_and_exit;
	297	}
	298
	299	/*
	300	* OK, past this point, all the error checking has been done.
	301	* At this point, we start making changes.....
	302	*/
	303
	304	if (self->settings.data_rate != new_serial.baud_base) {
	305	self->settings.data_rate = new_serial.baud_base;
	306	ircomm_param_request(self, IRCOMM_DATA_RATE, TRUE);
	307	}
	308
	309	self->close_delay = new_serial.close_delay * HZ/100;
	310	self->closing_wait = new_serial.closing_wait * HZ/100;
	311	/* self->custom_divisor = new_serial.custom_divisor; */
	312
	313	self->flags = ((self->flags & ~ASYNC_FLAGS) \|
	314	(new_serial.flags & ASYNC_FLAGS));
	315	self->tty->low_latency = (self->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
	316
	317	check_and_exit:
	318
d41861ca	319	if (tty_port_initialized(self)) {
1da177e4 LT	320	if (((old_state.flags & ASYNC_SPD_MASK) !=
	321	(self->flags & ASYNC_SPD_MASK)) \|\|
	322	(old_driver.custom_divisor != driver->custom_divisor)) {
	323	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
	324	driver->tty->alt_speed = 57600;
	325	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
	326	driver->tty->alt_speed = 115200;
	327	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
	328	driver->tty->alt_speed = 230400;
	329	if ((driver->flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
	330	driver->tty->alt_speed = 460800;
	331	ircomm_tty_change_speed(driver);
	332	}
	333	}
	334	#endif
	335	return 0;
	336	}
	337
	338	/*
6caa76b7	339	* Function ircomm_tty_ioctl (tty, cmd, arg)
1da177e4	340	*
6819bc2e	341	*
1da177e4 LT	342	*
1da177e4 LT	343	*/
6caa76b7	344	int ircomm_tty_ioctl(struct tty_struct *tty,
1da177e4 LT	345	unsigned int cmd, unsigned long arg)
	346	{
	347	struct ircomm_tty_cb self = (struct ircomm_tty_cb ) tty->driver_data;
	348	int ret = 0;
	349
1da177e4 LT	350	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
	351	(cmd != TIOCSERCONFIG) && (cmd != TIOCSERGSTRUCT) &&
	352	(cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
18900ca6	353	if (tty_io_error(tty))
1da177e4 LT	354	return -EIO;
	355	}
	356
	357	switch (cmd) {
	358	case TIOCGSERIAL:
	359	ret = ircomm_tty_get_serial_info(self, (struct serial_struct __user *) arg);
	360	break;
	361	case TIOCSSERIAL:
	362	ret = ircomm_tty_set_serial_info(self, (struct serial_struct __user *) arg);
	363	break;
	364	case TIOCMIWAIT:
955a9d20	365	pr_debug("(), TIOCMIWAIT, not impl!\n");
1da177e4 LT	366	break;
	367
	368	case TIOCGICOUNT:
955a9d20	369	pr_debug("%s(), TIOCGICOUNT not impl!\n", __func__);
1da177e4 LT	370	#if 0
	371	save_flags(flags); cli();
	372	cnow = driver->icount;
	373	restore_flags(flags);
	374	p_cuser = (struct serial_icounter_struct __user *) arg;
	375	if (put_user(cnow.cts, &p_cuser->cts) \|\|
	376	put_user(cnow.dsr, &p_cuser->dsr) \|\|
	377	put_user(cnow.rng, &p_cuser->rng) \|\|
	378	put_user(cnow.dcd, &p_cuser->dcd) \|\|
	379	put_user(cnow.rx, &p_cuser->rx) \|\|
	380	put_user(cnow.tx, &p_cuser->tx) \|\|
	381	put_user(cnow.frame, &p_cuser->frame) \|\|
	382	put_user(cnow.overrun, &p_cuser->overrun) \|\|
	383	put_user(cnow.parity, &p_cuser->parity) \|\|
	384	put_user(cnow.brk, &p_cuser->brk) \|\|
	385	put_user(cnow.buf_overrun, &p_cuser->buf_overrun))
	386	return -EFAULT;
6819bc2e	387	#endif
1da177e4 LT	388	return 0;
	389	default:
	390	ret = -ENOIOCTLCMD; /* ioctls which we must ignore */
	391	}
	392	return ret;
	393	}
	394
	395
	396