Commit e60a1084 authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
Browse files

rocket: use tty_port 



Switch the rocketport to use the new tty_port structure

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 0ad9e7d1

drivers/char/rocket.c

+58 −58
Original line number Diff line number Diff line
@@ -434,15 +434,15 @@ static void rp_do_transmit(struct r_port *info) 
#endif

	if (!info)

		return;

	if (!info->tty) {

	if (!info->port.tty) {

		printk(KERN_WARNING "rp: WARNING %s called with "

				"info->tty==NULL\n", __func__);

				"info->port.tty==NULL\n", __func__);

		clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);

		return;

	}



	spin_lock_irqsave(&info->slock, flags);

	tty = info->tty;

	tty = info->port.tty;

	info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);



	/*  Loop sending data to FIFO until done or FIFO full */
@@ -502,13 +502,13 @@ static void rp_handle_port(struct r_port *info) 
				"info->flags & NOT_INIT\n");

		return;

	}

	if (!info->tty) {

	if (!info->port.tty) {

		printk(KERN_WARNING "rp: WARNING: rp_handle_port called with "

				"info->tty==NULL\n");

				"info->port.tty==NULL\n");

		return;

	}

	cp = &info->channel;

	tty = info->tty;

	tty = info->port.tty;



	IntMask = sGetChanIntID(cp) & info->intmask;

#ifdef ROCKET_DEBUG_INTR
@@ -530,7 +530,7 @@ static void rp_handle_port(struct r_port *info) 
			tty_hangup(tty);

		}

		info->cd_status = (ChanStatus & CD_ACT) ? 1 : 0;

		wake_up_interruptible(&info->open_wait);

		wake_up_interruptible(&info->port.open_wait);

	}

#ifdef ROCKET_DEBUG_INTR

	if (IntMask & DELTA_CTS) {	/* CTS change */
@@ -650,7 +650,7 @@ static void init_r_port(int board, int aiop, int chan, struct pci_dev *pci_dev) 
	info->chan = chan;

	info->closing_wait = 3000;

	info->close_delay = 50;

	init_waitqueue_head(&info->open_wait);

	init_waitqueue_head(&info->port.open_wait);

	init_completion(&info->close_wait);

	info->flags &= ~ROCKET_MODE_MASK;

	switch (pc104[board][line]) {
@@ -717,7 +717,7 @@ static void configure_r_port(struct r_port *info, 
	unsigned rocketMode;

	int bits, baud, divisor;

	CHANNEL_t *cp;

	struct ktermios *t = info->tty->termios;

	struct ktermios *t = info->port.tty->termios;



	cp = &info->channel;

	cflag = t->c_cflag;
@@ -750,7 +750,7 @@ static void configure_r_port(struct r_port *info, 
	}



	/* baud rate */

	baud = tty_get_baud_rate(info->tty);

	baud = tty_get_baud_rate(info->port.tty);

	if (!baud)

		baud = 9600;

	divisor = ((rp_baud_base[info->board] + (baud >> 1)) / baud) - 1;
@@ -768,7 +768,7 @@ static void configure_r_port(struct r_port *info, 
	sSetBaud(cp, divisor);



	/* FIXME: Should really back compute a baud rate from the divisor */

	tty_encode_baud_rate(info->tty, baud, baud);

	tty_encode_baud_rate(info->port.tty, baud, baud);



	if (cflag & CRTSCTS) {

		info->intmask |= DELTA_CTS;
@@ -793,15 +793,15 @@ static void configure_r_port(struct r_port *info, 
	 * Handle software flow control in the board

	 */

#ifdef ROCKET_SOFT_FLOW

	if (I_IXON(info->tty)) {

	if (I_IXON(info->port.tty)) {

		sEnTxSoftFlowCtl(cp);

		if (I_IXANY(info->tty)) {

		if (I_IXANY(info->port.tty)) {

			sEnIXANY(cp);

		} else {

			sDisIXANY(cp);

		}

		sSetTxXONChar(cp, START_CHAR(info->tty));

		sSetTxXOFFChar(cp, STOP_CHAR(info->tty));

		sSetTxXONChar(cp, START_CHAR(info->port.tty));

		sSetTxXOFFChar(cp, STOP_CHAR(info->port.tty));

	} else {

		sDisTxSoftFlowCtl(cp);

		sDisIXANY(cp);
@@ -813,24 +813,24 @@ static void configure_r_port(struct r_port *info, 
	 * Set up ignore/read mask words

	 */

	info->read_status_mask = STMRCVROVRH | 0xFF;

	if (I_INPCK(info->tty))

	if (I_INPCK(info->port.tty))

		info->read_status_mask |= STMFRAMEH | STMPARITYH;

	if (I_BRKINT(info->tty) || I_PARMRK(info->tty))

	if (I_BRKINT(info->port.tty) || I_PARMRK(info->port.tty))

		info->read_status_mask |= STMBREAKH;



	/*

	 * Characters to ignore

	 */

	info->ignore_status_mask = 0;

	if (I_IGNPAR(info->tty))

	if (I_IGNPAR(info->port.tty))

		info->ignore_status_mask |= STMFRAMEH | STMPARITYH;

	if (I_IGNBRK(info->tty)) {

	if (I_IGNBRK(info->port.tty)) {

		info->ignore_status_mask |= STMBREAKH;

		/*

		 * If we're ignoring parity and break indicators,

		 * ignore overruns too.  (For real raw support).

		 */

		if (I_IGNPAR(info->tty))

		if (I_IGNPAR(info->port.tty))

			info->ignore_status_mask |= STMRCVROVRH;

	}
@@ -863,7 +863,7 @@ static void configure_r_port(struct r_port *info, 
	}

}



/*  info->count is considered critical, protected by spinlocks.  */

/*  info->port.count is considered critical, protected by spinlocks.  */

static int block_til_ready(struct tty_struct *tty, struct file *filp,

			   struct r_port *info)

{
@@ -897,13 +897,13 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, 


	/*

	 * Block waiting for the carrier detect and the line to become free.  While we are in

	 * this loop, info->count is dropped by one, so that rp_close() knows when to free things.  

	 * this loop, info->port.count is dropped by one, so that rp_close() knows when to free things.

         * We restore it upon exit, either normal or abnormal.

	 */

	retval = 0;

	add_wait_queue(&info->open_wait, &wait);

	add_wait_queue(&info->port.open_wait, &wait);

#ifdef ROCKET_DEBUG_OPEN

	printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->count);

	printk(KERN_INFO "block_til_ready before block: ttyR%d, count = %d\n", info->line, info->port.count);

#endif

	spin_lock_irqsave(&info->slock, flags);
@@ -912,10 +912,10 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, 
#else

	if (!tty_hung_up_p(filp)) {

		extra_count = 1;

		info->count--;

		info->port.count--;

	}

#endif

	info->blocked_open++;

	info->port.blocked_open++;



	spin_unlock_irqrestore(&info->slock, flags);
@@ -940,24 +940,24 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp, 
		}

#ifdef ROCKET_DEBUG_OPEN

		printk(KERN_INFO "block_til_ready blocking: ttyR%d, count = %d, flags=0x%0x\n",

		     info->line, info->count, info->flags);

		     info->line, info->port.count, info->flags);

#endif

		schedule();	/*  Don't hold spinlock here, will hang PC */

	}

	__set_current_state(TASK_RUNNING);

	remove_wait_queue(&info->open_wait, &wait);

	remove_wait_queue(&info->port.open_wait, &wait);



	spin_lock_irqsave(&info->slock, flags);



	if (extra_count)

		info->count++;

	info->blocked_open--;

		info->port.count++;

	info->port.blocked_open--;



	spin_unlock_irqrestore(&info->slock, flags);



#ifdef ROCKET_DEBUG_OPEN

	printk(KERN_INFO "block_til_ready after blocking: ttyR%d, count = %d\n",

	       info->line, info->count);

	       info->line, info->port.count);

#endif

	if (retval)

		return retval;
@@ -1001,9 +1001,9 @@ static int rp_open(struct tty_struct *tty, struct file *filp) 
		info->xmit_buf = (unsigned char *) page;



	tty->driver_data = info;

	info->tty = tty;

	info->port.tty = tty;



	if (info->count++ == 0) {

	if (info->port.count++ == 0) {

		atomic_inc(&rp_num_ports_open);



#ifdef ROCKET_DEBUG_OPEN
@@ -1012,7 +1012,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp) 
#endif

	}

#ifdef ROCKET_DEBUG_OPEN

	printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->count);

	printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);

#endif



	/*
@@ -1048,13 +1048,13 @@ static int rp_open(struct tty_struct *tty, struct file *filp) 
		 * Set up the tty->alt_speed kludge

		 */

		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)

			info->tty->alt_speed = 57600;

			info->port.tty->alt_speed = 57600;

		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)

			info->tty->alt_speed = 115200;

			info->port.tty->alt_speed = 115200;

		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)

			info->tty->alt_speed = 230400;

			info->port.tty->alt_speed = 230400;

		if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)

			info->tty->alt_speed = 460800;

			info->port.tty->alt_speed = 460800;



		configure_r_port(info, NULL);

		if (tty->termios->c_cflag & CBAUD) {
@@ -1076,7 +1076,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp) 
}



/*

 *  Exception handler that closes a serial port. info->count is considered critical. 

 *  Exception handler that closes a serial port. info->port.count is considered critical.

 */

static void rp_close(struct tty_struct *tty, struct file *filp)

{
@@ -1089,14 +1089,14 @@ static void rp_close(struct tty_struct *tty, struct file *filp) 
		return;



#ifdef ROCKET_DEBUG_OPEN

	printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->count);

	printk(KERN_INFO "rp_close ttyR%d, count = %d\n", info->line, info->port.count);

#endif



	if (tty_hung_up_p(filp))

		return;

	spin_lock_irqsave(&info->slock, flags);



	if ((tty->count == 1) && (info->count != 1)) {

	if ((tty->count == 1) && (info->port.count != 1)) {

		/*

		 * Uh, oh.  tty->count is 1, which means that the tty

		 * structure will be freed.  Info->count should always
@@ -1105,15 +1105,15 @@ static void rp_close(struct tty_struct *tty, struct file *filp) 
		 * serial port won't be shutdown.

		 */

		printk(KERN_WARNING "rp_close: bad serial port count; "

			"tty->count is 1, info->count is %d\n", info->count);

		info->count = 1;

			"tty->count is 1, info->port.count is %d\n", info->port.count);

		info->port.count = 1;

	}

	if (--info->count < 0) {

	if (--info->port.count < 0) {

		printk(KERN_WARNING "rp_close: bad serial port count for "

				"ttyR%d: %d\n", info->line, info->count);

		info->count = 0;

				"ttyR%d: %d\n", info->line, info->port.count);

		info->port.count = 0;

	}

	if (info->count) {

	if (info->port.count) {

		spin_unlock_irqrestore(&info->slock, flags);

		return;

	}
@@ -1167,11 +1167,11 @@ static void rp_close(struct tty_struct *tty, struct file *filp) 


	clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);



	if (info->blocked_open) {

	if (info->port.blocked_open) {

		if (info->close_delay) {

			msleep_interruptible(jiffies_to_msecs(info->close_delay));

		}

		wake_up_interruptible(&info->open_wait);

		wake_up_interruptible(&info->port.open_wait);

	} else {

		if (info->xmit_buf) {

			free_page((unsigned long) info->xmit_buf);
@@ -1357,13 +1357,13 @@ static int set_config(struct r_port *info, struct rocket_config __user *new_info 
	info->closing_wait = new_serial.closing_wait;



	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_HI)

		info->tty->alt_speed = 57600;

		info->port.tty->alt_speed = 57600;

	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_VHI)

		info->tty->alt_speed = 115200;

		info->port.tty->alt_speed = 115200;

	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_SHI)

		info->tty->alt_speed = 230400;

		info->port.tty->alt_speed = 230400;

	if ((info->flags & ROCKET_SPD_MASK) == ROCKET_SPD_WARP)

		info->tty->alt_speed = 460800;

		info->port.tty->alt_speed = 460800;



	configure_r_port(info, NULL);

	return 0;
@@ -1636,13 +1636,13 @@ static void rp_hangup(struct tty_struct *tty) 
	rp_flush_buffer(tty);

	if (info->flags & ROCKET_CLOSING)

		return;

	if (info->count) 

	if (info->port.count)

		atomic_dec(&rp_num_ports_open);

	clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);



	info->count = 0;

	info->port.count = 0;

	info->flags &= ~ROCKET_NORMAL_ACTIVE;

	info->tty = NULL;

	info->port.tty = NULL;



	cp = &info->channel;

	sDisRxFIFO(cp);
@@ -1653,7 +1653,7 @@ static void rp_hangup(struct tty_struct *tty) 
	sClrTxXOFF(cp);

	info->flags &= ~ROCKET_INITIALIZED;



	wake_up_interruptible(&info->open_wait);

	wake_up_interruptible(&info->port.open_wait);

}



/*
@@ -1762,7 +1762,7 @@ static int rp_write(struct tty_struct *tty, 


	/*  Write remaining data into the port's xmit_buf */

	while (1) {

		if (!info->tty)		/* Seemingly obligatory check... */

		if (!info->port.tty)		/* Seemingly obligatory check... */

			goto end;

		c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);

		c = min(c, XMIT_BUF_SIZE - info->xmit_head);

drivers/char/rocket_int.h

+3 −6
Original line number Diff line number Diff line
@@ -1125,11 +1125,9 @@ Warnings: This function writes the data byte without checking to see if 


struct r_port {

	int magic;

	struct tty_port port;

	int line;

	int flags;

	int count;

	int blocked_open;

	struct tty_struct *tty;

	int flags;		/* Don't yet match the ASY_ flags!! */

	unsigned int board:3;

	unsigned int aiop:2;

	unsigned int chan:3;
@@ -1148,8 +1146,7 @@ struct r_port { 
	int read_status_mask;

	int cps;



	wait_queue_head_t open_wait;

	struct completion close_wait;

	struct completion close_wait;	/* Not yet matching the core */

	spinlock_t slock;

	struct mutex write_mtx;

};

CRA Git | Maintained and supported by SUSTech CRA and CCSE