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Commit a6176eea authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
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[PATCH] Remove #if 0 and other long dead code from rio_tty



Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 925d70d6
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+0 −583
Original line number Diff line number Diff line
@@ -89,16 +89,9 @@ static char *_riotty_c_sccs_ = "@(#)riotty.c 1.3";
#include "list.h"
#include "sam.h"

#if 0
static void ttyseth_pv(struct Port *, struct ttystatics *, struct termios *sg, int);
#endif

static void RIOClearUp(struct Port *PortP);
int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len, int arg);

#if 0
static int RIOCookMode(struct ttystatics *);
#endif

extern int conv_vb[];		/* now defined in ttymgr.c */
extern int conv_bv[];		/* now defined in ttymgr.c */
@@ -226,33 +219,6 @@ int riotopen(struct tty_struct *tty, struct file *filp)
	 ** until the RTA is present then we must spin here waiting for
	 ** the RTA to boot.
	 */
#if 0
	if (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) {
		if (PortP->WaitUntilBooted) {
			rio_dprintk(RIO_DEBUG_TTY, "Waiting for RTA to boot\n");
			do {
				if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
					rio_dprintk(RIO_DEBUG_TTY, "RTA EINTR in delay \n");
					func_exit();
					return -EINTR;
				}
				if (repeat_this-- <= 0) {
					rio_dprintk(RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n");
					RIOPreemptiveCmd(p, PortP, FCLOSE);
					pseterr(EINTR);
					func_exit();
					return -EIO;
				}
			} while (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED));
			rio_dprintk(RIO_DEBUG_TTY, "RTA has been booted\n");
		} else {
			rio_dprintk(RIO_DEBUG_TTY, "RTA never booted\n");
			pseterr(ENXIO);
			func_exit();
			return 0;
		}
	}
#else
	/* I find the above code a bit hairy. I find the below code
	   easier to read and shorter. Now, if it works too that would
	   be great... -- REW 
@@ -281,21 +247,10 @@ int riotopen(struct tty_struct *tty, struct file *filp)
		}
	}
	rio_dprintk(RIO_DEBUG_TTY, "RTA has been booted\n");
#endif
#if 0
	tp = PortP->TtyP;	/* get tty struct */
#endif
	rio_spin_lock_irqsave(&PortP->portSem, flags);
	if (p->RIOHalted) {
		goto bombout;
	}
#if 0
	retval = gs_init_port(&PortP->gs);
	if (retval) {
		func_exit();
		return retval;
	}
#endif

	/*
	 ** If the port is in the final throws of being closed,
@@ -363,11 +318,6 @@ int riotopen(struct tty_struct *tty, struct file *filp)
		   command piggybacks the parameters immediately.
		   -- REW */
		RIOParam(PortP, OPEN, Modem, OK_TO_SLEEP);	/* Open the port */
#if 0
		/* This delay of 1 second was annoying. I removed it. -- REW */
		RIODelay(PortP, HUNDRED_MS * 10);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);	/* Config the port */
#endif
		rio_spin_lock_irqsave(&PortP->portSem, flags);

		/*
@@ -439,9 +389,6 @@ int riotopen(struct tty_struct *tty, struct file *filp)
				PortP->State |= RIO_WOPEN;
				rio_spin_unlock_irqrestore(&PortP->portSem, flags);
				if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL)
#if 0
					if (sleep((caddr_t) & tp->tm.c_canqo, TTIPRI | PCATCH))
#endif
					{
						/*
						 ** ACTION: verify that this is a good thing
@@ -505,10 +452,6 @@ int riotopen(struct tty_struct *tty, struct file *filp)
*/
int riotclose(void *ptr)
{
#if 0
	register uint SysPort = dev;
	struct ttystatics *tp;	/* pointer to our ttystruct */
#endif
	struct Port *PortP = ptr;	/* pointer to the port structure */
	int deleted = 0;
	int try = -1;		/* Disable the timeouts by setting them to -1 */
@@ -534,13 +477,6 @@ int riotclose(void *ptr)
		end_time = jiffies + MAX_SCHEDULE_TIMEOUT;

	Modem = rio_ismodem(tty);
#if 0
	/* What F.CKING cache? Even then, a higly idle multiprocessor,
	   system with large caches this won't work . Better find out when 
	   this doesn't work asap, and fix the cause.  -- REW */

	RIODelay(PortP, HUNDRED_MS * 10);	/* To flush the cache */
#endif
	rio_spin_lock_irqsave(&PortP->portSem, flags);

	/*
@@ -703,45 +639,6 @@ int riotclose(void *ptr)
}


/*
** decide if we need to use the line discipline.
** This routine can return one of three values:
** COOK_RAW if no processing has to be done by the line discipline or the card
** COOK_WELL if the line discipline must be used to do the processing
** COOK_MEDIUM if the card can do all the processing necessary.
*/
#if 0
static int RIOCookMode(struct ttystatics *tp)
{
	/*
	 ** We can't handle tm.c_mstate != 0 on SCO
	 ** We can't handle mapping
	 ** We can't handle non-ttwrite line disc.
	 ** We can't handle lflag XCASE
	 ** We can handle oflag OPOST & (OCRNL, ONLCR, TAB3)
	 */

#ifdef CHECK
	CheckTtyP(tp);
#endif
	if (!(tp->tm.c_oflag & OPOST))	/* No post processing */
		return COOK_RAW;	/* Raw mode o/p */

	if (tp->tm.c_lflag & XCASE)
		return COOK_WELL;	/* Use line disc */

	if (tp->tm.c_oflag & ~(OPOST | ONLCR | OCRNL | TAB3))
		return COOK_WELL;	/* Use line disc for strange modes */

	if (tp->tm.c_oflag == OPOST)	/* If only OPOST is set, do RAW */
		return COOK_RAW;

	/*
	 ** So, we need to output process!
	 */
	return COOK_MEDIUM;
}
#endif

static void RIOClearUp(PortP)
struct Port *PortP;
@@ -776,11 +673,6 @@ int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len
	unsigned long flags;

	rio_dprintk(RIO_DEBUG_TTY, "entering shortcommand.\n");
#ifdef CHECK
	CheckPortP(PortP);
	if (len < 1 || len > 2)
		cprintf(("STUPID LENGTH %d\n", len));
#endif

	if (PortP->State & RIO_DELETED) {
		rio_dprintk(RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n");
@@ -852,478 +744,3 @@ int RIOShortCommand(struct rio_info *p, struct Port *PortP, int command, int len
}

#if 0
/*
** This is an ioctl interface. This is the twentieth century. You know what
** its all about.
*/
int riotioctl(struct rio_info *p, struct tty_struct *tty, int cmd, caddr_t arg)
{
	register struct Port *PortP;
	register struct ttystatics *tp;
	int current;
	int ParamSemIncremented = 0;
	int old_oflag, old_cflag, old_iflag, changed, oldcook;
	int i;
	unsigned char sio_regs[5];	/* Here be magic */
	short vpix_cflag;
	short divisor;
	int baud;
	uint SysPort = rio_minor(tty);
	int Modem = rio_ismodem(tty);
	int ioctl_processed;

	rio_dprintk(RIO_DEBUG_TTY, "port ioctl SysPort %d command 0x%x argument 0x%x %s\n", SysPort, cmd, arg, Modem ? "Modem" : "tty");

	if (SysPort >= RIO_PORTS) {
		rio_dprintk(RIO_DEBUG_TTY, "Bad port number %d\n", SysPort);
		return -ENXIO;
	}

	PortP = p->RIOPortp[SysPort];
	tp = PortP->TtyP;

	rio_spin_lock_irqsave(&PortP->portSem, flags);

#ifdef STATS
	PortP->Stat.IoctlCnt++;
#endif

	if (PortP->State & RIO_DELETED) {
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return -EIO;
	}


	if (p->RIOHalted) {
		RIOClearUp(PortP);
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return -EIO;
	}

	/*
	 ** Count ioctls for port statistics reporting
	 */
	if (PortP->statsGather)
		PortP->ioctls++;

	/*
	 ** Specialix RIO Ioctl calls
	 */
	switch (cmd) {

	case TCRIOTRIAD:
		if (arg)
			PortP->State |= RIO_TRIAD_MODE;
		else
			PortP->State &= ~RIO_TRIAD_MODE;
		/*
		 ** Normally, when istrip is set on a port, a config is
		 ** sent to the RTA instructing the CD1400 to do the
		 ** stripping. In TRIAD mode, the interrupt receive routine
		 ** must do the stripping instead, since it has to detect
		 ** an 8 bit function key sequence. If istrip is set with
		 ** TRIAD mode on(off), and 8 bit data is being read by
		 ** the port, the user then turns TRIAD mode off(on), the RTA
		 ** must be reconfigured (not) to do the stripping.
		 ** Hence we call RIOParam here.
		 */
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

	case TCRIOTSTATE:
		rio_dprintk(RIO_DEBUG_TTY, "tbusy/tstop monitoring %sabled\n", arg ? "en" : "dis");
		/* MonitorTstate = 0 ; */
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

	case TCRIOSTATE:	/* current state of Modem input pins */
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOSTATE\n");
		if (RIOPreemptiveCmd(p, PortP, MGET) == RIO_FAIL)
			rio_dprintk(RIO_DEBUG_TTY, "TCRIOSTATE command failed\n");
		PortP->State |= RIO_BUSY;
		current = PortP->ModemState;
		if (copyout((caddr_t) & current, (int) arg, sizeof(current)) == COPYFAIL) {
			rio_dprintk(RIO_DEBUG_TTY, "Copyout failed\n");
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			pseterr(EFAULT);
		}
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOMBIS:	/* Set modem lines */
	case TCRIOMBIC:	/* Clear modem lines */
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOMBIS/TCRIOMBIC\n");
		if (cmd == TCRIOMBIS) {
			uint state;
			state = (uint) arg;
			PortP->ModemState |= (ushort) state;
			PortP->ModemLines = (ulong) arg;
			if (RIOPreemptiveCmd(p, PortP, MBIS) == RIO_FAIL)
				rio_dprintk(RIO_DEBUG_TTY, "TCRIOMBIS command failed\n");
		} else {
			uint state;

			state = (uint) arg;
			PortP->ModemState &= ~(ushort) state;
			PortP->ModemLines = (ulong) arg;
			if (RIOPreemptiveCmd(p, PortP, MBIC) == RIO_FAIL)
				rio_dprintk(RIO_DEBUG_TTY, "TCRIOMBIC command failed\n");
		}
		PortP->State |= RIO_BUSY;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOXPON:	/* set Xprint ON string */
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOXPON\n");
		if (copyin((int) arg, (caddr_t) PortP->Xprint.XpOn, MAX_XP_CTRL_LEN) == COPYFAIL) {
			rio_dprintk(RIO_DEBUG_TTY, "Copyin failed\n");
			PortP->Xprint.XpOn[0] = '\0';
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			pseterr(EFAULT);
		}
		PortP->Xprint.XpOn[MAX_XP_CTRL_LEN - 1] = '\0';
		PortP->Xprint.XpLen = strlen(PortP->Xprint.XpOn) + strlen(PortP->Xprint.XpOff);
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOXPOFF:	/* set Xprint OFF string */
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOXPOFF\n");
		if (copyin((int) arg, (caddr_t) PortP->Xprint.XpOff, MAX_XP_CTRL_LEN) == COPYFAIL) {
			rio_dprintk(RIO_DEBUG_TTY, "Copyin failed\n");
			PortP->Xprint.XpOff[0] = '\0';
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			pseterr(EFAULT);
		}
		PortP->Xprint.XpOff[MAX_XP_CTRL_LEN - 1] = '\0';
		PortP->Xprint.XpLen = strlen(PortP->Xprint.XpOn) + strlen(PortP->Xprint.XpOff);
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOXPCPS:	/* set Xprint CPS string */
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOXPCPS\n");
		if ((uint) arg > p->RIOConf.MaxXpCps || (uint) arg < p->RIOConf.MinXpCps) {
			rio_dprintk(RIO_DEBUG_TTY, "%d CPS out of range\n", arg);
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			pseterr(EINVAL);
			return 0;
		}
		PortP->Xprint.XpCps = (uint) arg;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOXPRINT:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOXPRINT\n");
		if (copyout((caddr_t) & PortP->Xprint, (int) arg, sizeof(struct Xprint)) == COPYFAIL) {
			rio_spin_unlock_irqrestore(&PortP->portSem, flags);
			pseterr(EFAULT);
		}
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOIXANYON:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOIXANYON\n");
		PortP->Config |= RIO_IXANY;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOIXANYOFF:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOIXANYOFF\n");
		PortP->Config &= ~RIO_IXANY;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOIXONON:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOIXONON\n");
		PortP->Config |= RIO_IXON;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

	case TCRIOIXONOFF:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOIXONOFF\n");
		PortP->Config &= ~RIO_IXON;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		return 0;

/*
** 15.10.1998 ARG - ESIL 0761 part fix
** Added support for CTS and RTS flow control ioctls :
*/
	case TCRIOCTSFLOWEN:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOCTSFLOWEN\n");
		PortP->Config |= RIO_CTSFLOW;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

	case TCRIOCTSFLOWDIS:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIOCTSFLOWDIS\n");
		PortP->Config &= ~RIO_CTSFLOW;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

	case TCRIORTSFLOWEN:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIORTSFLOWEN\n");
		PortP->Config |= RIO_RTSFLOW;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

	case TCRIORTSFLOWDIS:
		rio_dprintk(RIO_DEBUG_TTY, "TCRIORTSFLOWDIS\n");
		PortP->Config &= ~RIO_RTSFLOW;
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		return 0;

/* end ESIL 0761 part fix */

	}


	/* Lynx IOCTLS */
	switch (cmd) {
	case TIOCSETP:
	case TIOCSETN:
	case OTIOCSETP:
	case OTIOCSETN:
		ioctl_processed++;
		ttyseth(PortP, tp, (struct old_sgttyb *) arg);
		break;
	case TCSETA:
	case TCSETAW:
	case TCSETAF:
		ioctl_processed++;
		rio_dprintk(RIO_DEBUG_TTY, "NON POSIX ioctl\n");
		ttyseth_pv(PortP, tp, (struct termios *) arg, 0);
		break;
	case TCSETAP:		/* posix tcsetattr() */
	case TCSETAWP:		/* posix tcsetattr() */
	case TCSETAFP:		/* posix tcsetattr() */
		rio_dprintk(RIO_DEBUG_TTY, "NON POSIX SYSV ioctl\n");
		ttyseth_pv(PortP, tp, (struct termios *) arg, 1);
		ioctl_processed++;
		break;
	}

	/*
	 ** If its any of the commands that require the port to be in the
	 ** non-busy state wait until all output has drained
	 */
	if (!ioctl_processed)
		switch (cmd) {
		case TCSETAW:
		case TCSETAF:
		case TCSETA:
		case TCSBRK:
#define OLD_POSIX ('x' << 8)
#define OLD_POSIX_SETA (OLD_POSIX | 2)
#define OLD_POSIX_SETAW (OLD_POSIX | 3)
#define OLD_POSIX_SETAF (OLD_POSIX | 4)
#define NEW_POSIX (('i' << 24) | ('X' << 16))
#define NEW_POSIX_SETA (NEW_POSIX | 2)
#define NEW_POSIX_SETAW (NEW_POSIX | 3)
#define NEW_POSIX_SETAF (NEW_POSIX | 4)
		case OLD_POSIX_SETA:
		case OLD_POSIX_SETAW:
		case OLD_POSIX_SETAF:
		case NEW_POSIX_SETA:
		case NEW_POSIX_SETAW:
		case NEW_POSIX_SETAF:
#ifdef TIOCSETP
		case TIOCSETP:
#endif
		case TIOCSETD:
		case TIOCSETN:
			rio_dprintk(RIO_DEBUG_TTY, "wait for non-BUSY, semaphore set\n");
			/*
			 ** Wait for drain here, at least as far as the double buffer
			 ** being empty.
			 */
			/* XXX Does the above comment mean that this has
			   still to be implemented? -- REW */
			/* XXX Is the locking OK together with locking
			   in txenable? (Deadlock?) -- REW */

			RIOTxEnable((char *) PortP);
			break;
		default:
			break;
		}

	old_cflag = tp->tm.c_cflag;
	old_iflag = tp->tm.c_iflag;
	old_oflag = tp->tm.c_oflag;
	oldcook = PortP->CookMode;

	if (p->RIOHalted) {
		RIOClearUp(PortP);
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		pseterr(EIO);
		return 0;
	}

	PortP->FlushCmdBodge = 0;

	/*
	 ** If the port is locked, and it is reconfigured, we want
	 ** to restore the state of the tty structure so the change is NOT
	 ** made.
	 */
	if (PortP->Lock) {
		tp->tm.c_iflag = PortP->StoredTty.iflag;
		tp->tm.c_oflag = PortP->StoredTty.oflag;
		tp->tm.c_cflag = PortP->StoredTty.cflag;
		tp->tm.c_lflag = PortP->StoredTty.lflag;
		tp->tm.c_line = PortP->StoredTty.line;
		for (i = 0; i < NCC + 1; i++)
			tp->tm.c_cc[i] = PortP->StoredTty.cc[i];
	} else {
		/*
		 ** If the port is set to store the parameters, and it is
		 ** reconfigured, we want to save the current tty struct so it
		 ** may be restored on the next open.
		 */
		if (PortP->Store) {
			PortP->StoredTty.iflag = tp->tm.c_iflag;
			PortP->StoredTty.oflag = tp->tm.c_oflag;
			PortP->StoredTty.cflag = tp->tm.c_cflag;
			PortP->StoredTty.lflag = tp->tm.c_lflag;
			PortP->StoredTty.line = tp->tm.c_line;
			for (i = 0; i < NCC + 1; i++)
				PortP->StoredTty.cc[i] = tp->tm.c_cc[i];
		}
	}

	changed = (tp->tm.c_cflag != old_cflag) || (tp->tm.c_iflag != old_iflag) || (tp->tm.c_oflag != old_oflag);

	PortP->CookMode = RIOCookMode(tp);	/* Set new cooking mode */

	rio_dprintk(RIO_DEBUG_TTY, "RIOIoctl changed %d newcook %d oldcook %d\n", changed, PortP->CookMode, oldcook);

#ifdef MODEM_SUPPORT
	/*
	 ** kludge to force CARR_ON if CLOCAL set
	 */
	if ((tp->tm.c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD)) {
		tp->tm.c_state |= CARR_ON;
		wakeup((caddr_t) & tp->tm.c_canq);
	}
#endif

	if (p->RIOHalted) {
		RIOClearUp(PortP);
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		pseterr(EIO);
		return 0;
	}
	/*
	 ** Re-configure if modes or cooking have changed
	 */
	if (changed || oldcook != PortP->CookMode || (ioctl_processed)) {
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		rio_dprintk(RIO_DEBUG_TTY, "Ioctl changing the PORT settings\n");
		RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
		rio_spin_lock_irqsave(&PortP->portSem, flags);
	}

	if (p->RIOHalted) {
		rio_spin_unlock_irqrestore(&PortP->portSem, flags);
		RIOClearUp(PortP);
		pseterr(EIO);
		return 0;
	}
	rio_spin_unlock_irqrestore(&PortP->portSem, flags);
	return 0;
}

/*
	ttyseth -- set hardware dependent tty settings
*/
void ttyseth(PortP, s, sg)
struct Port *PortP;
struct ttystatics *s;
struct old_sgttyb *sg;
{
	struct old_sgttyb *tsg;
	struct termios *tp = &s->tm;

	tsg = &s->sg;

	if (sg->sg_flags & (EVENP | ODDP)) {
		tp->c_cflag &= PARENB;
		if (sg->sg_flags & EVENP) {
			if (sg->sg_flags & ODDP) {
				tp->c_cflag &= V_CS7;
				tp->c_cflag &= ~PARENB;
			} else {
				tp->c_cflag &= V_CS7;
				tp->c_cflag &= PARENB;
				tp->c_cflag &= PARODD;
			}
		} else if (sg->sg_flags & ODDP) {
			tp->c_cflag &= V_CS7;
			tp->c_cflag &= PARENB;
			tp->c_cflag &= PARODD;
		} else {
			tp->c_cflag &= V_CS7;
			tp->c_cflag &= PARENB;
		}
	}
/*
 * Use ispeed as the desired speed.  Most implementations don't handle 
 * separate input and output speeds very well. If the RIO handles this, 
 * I will have to use separate sets of flags to store them in the 
 * Port structure.
 */
	if (!sg->sg_ospeed)
		sg->sg_ospeed = sg->sg_ispeed;
	else
		sg->sg_ispeed = sg->sg_ospeed;
	if (sg->sg_ispeed > V_EXTB)
		sg->sg_ispeed = V_EXTB;
	if (sg->sg_ispeed < V_B0)
		sg->sg_ispeed = V_B0;
	*tsg = *sg;
	tp->c_cflag = (tp->c_cflag & ~V_CBAUD) | conv_bv[(int) sg->sg_ispeed];
}

/*
	ttyseth_pv -- set hardware dependent tty settings using either the
			POSIX termios structure or the System V termio structure.
				sysv = 0 => (POSIX):	 struct termios *sg
				sysv != 0 => (System V): struct termio *sg
*/
static void ttyseth_pv(PortP, s, sg, sysv)
struct Port *PortP;
struct ttystatics *s;
struct termios *sg;
int sysv;
{
	int speed;
	unsigned char csize;
	unsigned char cread;
	unsigned int lcr_flags;
	int ps;

	if (sysv) {
		/* sg points to a System V termio structure */
		csize = ((struct termio *) sg)->c_cflag & CSIZE;
		cread = ((struct termio *) sg)->c_cflag & CREAD;
		speed = conv_vb[((struct termio *) sg)->c_cflag & V_CBAUD];
	} else {
		/* sg points to a POSIX termios structure */
		csize = sg->c_cflag & CSIZE;
		cread = sg->c_cflag & CREAD;
		speed = conv_vb[sg->c_cflag & V_CBAUD];
	}
	if (s->sg.sg_ispeed != speed || s->sg.sg_ospeed != speed) {
		s->sg.sg_ispeed = speed;
		s->sg.sg_ospeed = speed;
		s->tm.c_cflag = (s->tm.c_cflag & ~V_CBAUD) | conv_bv[(int) s->sg.sg_ispeed];
	}
}
#endif