2 ** -----------------------------------------------------------------------------
4 ** Perle Specialix driver for Linux
5 ** Ported from existing RIO Driver for SCO sources.
7 * (C) 1990 - 2000 Specialix International Ltd., Byfleet, Surrey, UK.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 ** Last Modified : 11/6/98 10:33:47
26 ** Retrieved : 11/6/98 10:33:50
28 ** ident @(#)riotty.c 1.3
30 ** -----------------------------------------------------------------------------
33 static char *_riotty_c_sccs_ = "@(#)riotty.c 1.3";
37 #define __EXPLICIT_DEF_H__
39 #include <linux/module.h>
40 #include <linux/slab.h>
41 #include <linux/errno.h>
42 #include <linux/tty.h>
44 #include <asm/system.h>
45 #include <asm/string.h>
46 #include <asm/semaphore.h>
47 #include <asm/uaccess.h>
49 #include <linux/termios.h>
51 #include <linux/serial.h>
53 #include <linux/generic_serial.h>
56 #include "linux_compat.h"
57 #include "rio_linux.h"
92 static void ttyseth_pv(struct Port *, struct ttystatics *,
93 struct termios *sg, int);
96 static void RIOClearUp(struct Port *PortP);
97 int RIOShortCommand(struct rio_info *p, struct Port *PortP,
98 int command, int len, int arg);
101 extern int conv_vb[]; /* now defined in ttymgr.c */
102 extern int conv_bv[]; /* now defined in ttymgr.c */
105 ** 16.09.1998 ARG - Fix to build riotty.k.o for Modular Kernel Support
107 ** ep.def.h is necessary for Modular Kernel Support
108 ** DO NOT place any kernel 'extern's after this line
109 ** or this source file will not build riotty.k.o
116 static struct old_sgttyb
119 B19200, B19200, /* input and output speed */
120 'H' - '@', /* erase char */
121 -1, /* 2nd erase char */
122 'U' - '@', /* kill char */
123 ECHO | CRMOD, /* mode */
124 'C' - '@', /* interrupt character */
125 '\\' - '@', /* quit char */
126 'Q' - '@', /* start char */
127 'S' - '@', /* stop char */
130 (LCRTBS | LCRTERA | LCRTKIL | LCTLECH), /* local mode word */
131 'Z' - '@', /* process stop */
132 'Y' - '@', /* delayed stop */
133 'R' - '@', /* reprint line */
134 'O' - '@', /* flush output */
135 'W' - '@', /* word erase */
136 'V' - '@' /* literal next char */
141 extern struct rio_info *p;
145 riotopen(struct tty_struct * tty, struct file * filp)
147 register uint SysPort;
149 int repeat_this = 250;
150 struct Port *PortP; /* pointer to the port structure */
156 /* Make sure driver_data is NULL in case the rio isn't booted jet. Else gs_close
159 tty->driver_data = NULL;
161 SysPort = rio_minor(tty);
162 Modem = rio_ismodem(tty);
164 if ( p->RIOFailed ) {
165 rio_dprintk (RIO_DEBUG_TTY, "System initialisation failed\n");
171 rio_dprintk (RIO_DEBUG_TTY, "port open SysPort %d (%s) (mapped:%d)\n",
172 SysPort, Modem ? "Modem" : "tty",
173 p->RIOPortp[SysPort]->Mapped);
176 ** Validate that we have received a legitimate request.
177 ** Currently, just check that we are opening a port on
178 ** a host card that actually exists, and that the port
179 ** has been mapped onto a host.
181 if (SysPort >= RIO_PORTS) { /* out of range ? */
182 rio_dprintk (RIO_DEBUG_TTY, "Illegal port number %d\n",SysPort);
189 ** Grab pointer to the port stucture
191 PortP = p->RIOPortp[SysPort]; /* Get control struc */
192 rio_dprintk (RIO_DEBUG_TTY, "PortP: %p\n", PortP);
193 if ( !PortP->Mapped ) { /* we aren't mapped yet! */
195 ** The system doesn't know which RTA this port
198 rio_dprintk (RIO_DEBUG_TTY, "port not mapped into system\n");
204 tty->driver_data = PortP;
209 rio_dprintk (RIO_DEBUG_TTY, "%d bytes in tx buffer\n",
212 retval = gs_init_port (&PortP->gs);
218 ** If the host hasn't been booted yet, then
221 if ( (PortP->HostP->Flags & RUN_STATE) != RC_RUNNING ) {
222 rio_dprintk (RIO_DEBUG_TTY, "Host not running\n");
229 ** If the RTA has not booted yet and the user has choosen to block
230 ** until the RTA is present then we must spin here waiting for
234 if (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) {
235 if (PortP->WaitUntilBooted) {
236 rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot\n");
238 if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
239 rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n");
243 if (repeat_this -- <= 0) {
244 rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n");
245 RIOPreemptiveCmd(p, PortP, FCLOSE );
250 } while(!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED));
251 rio_dprintk (RIO_DEBUG_TTY, "RTA has been booted\n");
253 rio_dprintk (RIO_DEBUG_TTY, "RTA never booted\n");
260 /* I find the above code a bit hairy. I find the below code
261 easier to read and shorter. Now, if it works too that would
264 rio_dprintk (RIO_DEBUG_TTY, "Checking if RTA has booted... \n");
265 while (!(PortP->HostP->Mapping[PortP->RupNum].Flags & RTA_BOOTED)) {
266 if (!PortP->WaitUntilBooted) {
267 rio_dprintk (RIO_DEBUG_TTY, "RTA never booted\n");
272 /* Under Linux you'd normally use a wait instead of this
273 busy-waiting. I'll stick with the old implementation for
276 if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
277 rio_dprintk (RIO_DEBUG_TTY, "RTA_wait_for_boot: EINTR in delay \n");
281 if (repeat_this -- <= 0) {
282 rio_dprintk (RIO_DEBUG_TTY, "Waiting for RTA to boot timeout\n");
287 rio_dprintk (RIO_DEBUG_TTY, "RTA has been booted\n");
290 tp = PortP->TtyP; /* get tty struct */
292 rio_spin_lock_irqsave(&PortP->portSem, flags);
293 if ( p->RIOHalted ) {
297 retval = gs_init_port(&PortP->gs);
305 ** If the port is in the final throws of being closed,
306 ** we should wait here (politely), waiting
307 ** for it to finish, so that it doesn't close us!
309 while ( (PortP->State & RIO_CLOSING) && !p->RIOHalted ) {
310 rio_dprintk (RIO_DEBUG_TTY, "Waiting for RIO_CLOSING to go away\n");
311 if (repeat_this -- <= 0) {
312 rio_dprintk (RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n");
313 RIOPreemptiveCmd(p, PortP, FCLOSE );
317 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
318 if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
319 rio_spin_lock_irqsave(&PortP->portSem, flags);
323 rio_spin_lock_irqsave(&PortP->portSem, flags);
326 if ( !PortP->Mapped ) {
327 rio_dprintk (RIO_DEBUG_TTY, "Port unmapped while closing!\n");
328 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
334 if ( p->RIOHalted ) {
339 ** 15.10.1998 ARG - ESIL 0761 part fix
340 ** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure,
341 ** we need to make sure that the flags are clear when the port is opened.
343 /* Uh? Suppose I turn these on and then another process opens
344 the port again? The flags get cleared! Not good. -- REW */
345 if ( !(PortP->State & (RIO_LOPEN | RIO_MOPEN)) ) {
346 PortP->Config &= ~(RIO_CTSFLOW|RIO_RTSFLOW);
349 if (!(PortP->firstOpen)) { /* First time ? */
350 rio_dprintk (RIO_DEBUG_TTY, "First open for this port\n");
354 PortP->CookMode = 0; /* XXX RIOCookMode(tp); */
355 PortP->InUse = NOT_INUSE;
357 /* Tentative fix for bug PR27. Didn't work. */
358 /* PortP->gs.xmit_cnt = 0; */
360 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
362 ttyseth(PortP, tp, (struct old_sgttyb *)&default_sg);
365 /* Someone explain to me why this delay/config is
366 here. If I read the docs correctly the "open"
367 command piggybacks the parameters immediately.
369 RIOParam(PortP,OPEN,Modem,OK_TO_SLEEP); /* Open the port */
371 /* This delay of 1 second was annoying. I removed it. -- REW */
372 RIODelay(PortP, HUNDRED_MS*10);
373 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP); /* Config the port */
375 rio_spin_lock_irqsave(&PortP->portSem, flags);
378 ** wait for the port to be not closed.
380 while ( !(PortP->PortState & PORT_ISOPEN) && !p->RIOHalted ) {
381 rio_dprintk (RIO_DEBUG_TTY, "Waiting for PORT_ISOPEN-currently %x\n",PortP->PortState);
383 ** 15.10.1998 ARG - ESIL 0759
384 ** (Part) fix for port being trashed when opened whilst RTA "disconnected"
385 ** Take out the limited wait - now wait for ever or until user
388 if (repeat_this -- <= 0) {
389 rio_dprint(RIO_DEBUG_TTY, ("Waiting for open to finish timed out.\n"));
390 RIOPreemptiveCmd(p, PortP, FCLOSE );
391 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
396 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
397 if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
398 rio_dprintk (RIO_DEBUG_TTY, "Waiting for open to finish broken by signal\n");
399 RIOPreemptiveCmd(p, PortP, FCLOSE );
403 rio_spin_lock_irqsave(&PortP->portSem, flags);
406 if ( p->RIOHalted ) {
409 /* RIOClearUp( PortP ); */
410 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
413 rio_dprintk (RIO_DEBUG_TTY, "PORT_ISOPEN found\n");
418 rio_dprintk (RIO_DEBUG_TTY, "Modem - test for carrier\n");
421 ** insert test for carrier here. -- ???
422 ** I already see that test here. What's the deal? -- REW
424 if ((PortP->gs.tty->termios->c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD))
426 rio_dprintk (RIO_DEBUG_TTY, "open(%d) Modem carr on\n", SysPort);
428 tp->tm.c_state |= CARR_ON;
429 wakeup((caddr_t) &tp->tm.c_canq);
431 PortP->State |= RIO_CARR_ON;
432 wake_up_interruptible (&PortP->gs.open_wait);
434 else /* no carrier - wait for DCD */
437 while (!(PortP->gs.tty->termios->c_state & CARR_ON) &&
438 !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted )
440 while (!(PortP->State & RIO_CARR_ON) &&
441 !(filp->f_flags & O_NONBLOCK) && !p->RIOHalted ) {
443 rio_dprintk (RIO_DEBUG_TTY, "open(%d) sleeping for carr on\n",SysPort);
445 PortP->gs.tty->termios->c_state |= WOPEN;
447 PortP->State |= RIO_WOPEN;
448 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
449 if (RIODelay (PortP, HUNDRED_MS) == RIO_FAIL)
451 if ( sleep((caddr_t)&tp->tm.c_canqo, TTIPRI|PCATCH))
455 ** ACTION: verify that this is a good thing
456 ** to do here. -- ???
457 ** I think it's OK. -- REW
459 rio_dprintk (RIO_DEBUG_TTY, "open(%d) sleeping for carr broken by signal\n",
461 RIOPreemptiveCmd( p, PortP, FCLOSE );
463 tp->tm.c_state &= ~WOPEN;
465 PortP->State &= ~RIO_WOPEN;
466 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
471 PortP->State &= ~RIO_WOPEN;
475 rio_dprintk (RIO_DEBUG_TTY, "Setting RIO_MOPEN\n");
476 PortP->State |= RIO_MOPEN;
483 ** Direct line open - force carrier (will probably mean
484 ** that sleeping Modem line fubar)
486 PortP->State |= RIO_LOPEN;
489 if ( p->RIOHalted ) {
493 rio_dprintk (RIO_DEBUG_TTY, "high level open done\n");
496 PortP->Stat.OpenCnt++;
499 ** Count opens for port statistics reporting
501 if (PortP->statsGather)
504 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
505 rio_dprintk (RIO_DEBUG_TTY, "Returning from open\n");
511 ** RIOClose the port.
512 ** The operating system thinks that this is last close for the device.
513 ** As there are two interfaces to the port (Modem and tty), we need to
514 ** check that both are closed before we close the device.
520 register uint SysPort = dev;
521 struct ttystatics *tp; /* pointer to our ttystruct */
523 struct Port *PortP =ptr; /* pointer to the port structure */
525 int try = -1; /* Disable the timeouts by setting them to -1 */
526 int repeat_this = -1; /* Congrats to those having 15 years of
527 uptime! (You get to break the driver.) */
529 struct tty_struct * tty;
534 rio_dprintk (RIO_DEBUG_TTY, "port close SysPort %d\n",PortP->PortNum);
536 /* PortP = p->RIOPortp[SysPort]; */
537 rio_dprintk (RIO_DEBUG_TTY, "Port is at address 0x%x\n",(int)PortP);
538 /* tp = PortP->TtyP;*/ /* Get tty */
540 rio_dprintk (RIO_DEBUG_TTY, "TTY is at address 0x%x\n",(int)tty);
542 if (PortP->gs.closing_wait)
543 end_time = jiffies + PortP->gs.closing_wait;
545 end_time = jiffies + MAX_SCHEDULE_TIMEOUT;
547 Modem = rio_ismodem(tty);
549 /* What F.CKING cache? Even then, a higly idle multiprocessor,
550 system with large caches this won't work . Better find out when
551 this doesn't work asap, and fix the cause. -- REW */
553 RIODelay(PortP, HUNDRED_MS*10); /* To flush the cache */
555 rio_spin_lock_irqsave(&PortP->portSem, flags);
558 ** Setting this flag will make any process trying to open
559 ** this port block until we are complete closing it.
561 PortP->State |= RIO_CLOSING;
563 if ( (PortP->State & RIO_DELETED) ) {
564 rio_dprintk (RIO_DEBUG_TTY, "Close on deleted RTA\n");
568 if ( p->RIOHalted ) {
574 rio_dprintk (RIO_DEBUG_TTY, "Clear bits\n");
576 ** clear the open bits for this device
578 PortP->State &= (Modem ? ~RIO_MOPEN : ~RIO_LOPEN);
579 PortP->State &= ~RIO_CARR_ON;
580 PortP->ModemState &= ~MSVR1_CD;
582 ** If the device was open as both a Modem and a tty line
583 ** then we need to wimp out here, as the port has not really
584 ** been finally closed (gee, whizz!) The test here uses the
585 ** bit for the OTHER mode of operation, to see if THAT is
588 if ( (PortP->State & (RIO_LOPEN|RIO_MOPEN)) ) {
590 ** The port is still open for the other task -
591 ** return, pretending that we are still active.
593 rio_dprintk (RIO_DEBUG_TTY, "Channel %d still open !\n",PortP->PortNum);
594 PortP->State &= ~RIO_CLOSING;
595 if (PortP->firstOpen)
597 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
601 rio_dprintk (RIO_DEBUG_TTY, "Closing down - everything must go!\n");
603 PortP->State &= ~RIO_DYNOROD;
606 ** This is where we wait for the port
607 ** to drain down before closing. Bye-bye....
608 ** (We never meant to do this)
610 rio_dprintk (RIO_DEBUG_TTY, "Timeout 1 starts\n");
613 while ( (PortP->InUse != NOT_INUSE) && !p->RIOHalted &&
614 (PortP->TxBufferIn != PortP->TxBufferOut) ) {
615 cprintf("Need to flush the ttyport\n");
616 if (repeat_this -- <= 0) {
618 rio_dprintk (RIO_DEBUG_TTY, "Waiting for not idle closed broken by signal\n");
619 RIOPreemptiveCmd(p, PortP, FCLOSE );
622 rio_dprintk (RIO_DEBUG_TTY, "Calling timeout to flush in closing\n");
623 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
624 if (RIODelay_ni(PortP, HUNDRED_MS*10) == RIO_FAIL) {
625 rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n");
627 rio_spin_lock_irqsave(&PortP->portSem, flags);
630 rio_spin_lock_irqsave(&PortP->portSem, flags);
633 PortP->TxBufferIn = PortP->TxBufferOut = 0;
637 if ( (PortP->State & (RIO_LOPEN|RIO_MOPEN)) ) {
639 ** The port has been re-opened for the other task -
640 ** return, pretending that we are still active.
642 rio_dprintk (RIO_DEBUG_TTY, "Channel %d re-open!\n", PortP->PortNum);
643 PortP->State &= ~RIO_CLOSING;
644 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
645 if (PortP->firstOpen)
650 if ( p->RIOHalted ) {
657 /* Can't call RIOShortCommand with the port locked. */
658 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
660 if (RIOShortCommand(p, PortP, CLOSE, 1, 0) == RIO_FAIL) {
661 RIOPreemptiveCmd(p, PortP,FCLOSE);
666 while (try && (PortP->PortState & PORT_ISOPEN)) {
668 if (time_after (jiffies, end_time)) {
669 rio_dprintk (RIO_DEBUG_TTY, "Run out of tries - force the bugger shut!\n" );
670 RIOPreemptiveCmd(p, PortP,FCLOSE);
673 rio_dprintk (RIO_DEBUG_TTY, "Close: PortState:ISOPEN is %d\n",
674 PortP->PortState & PORT_ISOPEN);
676 if ( p->RIOHalted ) {
680 if (RIODelay(PortP, HUNDRED_MS) == RIO_FAIL) {
681 rio_dprintk (RIO_DEBUG_TTY, "RTA EINTR in delay \n");
682 RIOPreemptiveCmd(p, PortP,FCLOSE);
686 rio_spin_lock_irqsave(&PortP->portSem, flags);
687 rio_dprintk (RIO_DEBUG_TTY, "Close: try was %d on completion\n", try );
689 /* RIOPreemptiveCmd(p, PortP, FCLOSE); */
692 ** 15.10.1998 ARG - ESIL 0761 part fix
693 ** RIO has it's own CTSFLOW and RTSFLOW flags in 'Config' in the port structure,** we need to make sure that the flags are clear when the port is opened.
695 PortP->Config &= ~(RIO_CTSFLOW|RIO_RTSFLOW);
699 PortP->Stat.CloseCnt++;
702 ** Count opens for port statistics reporting
704 if (PortP->statsGather)
708 /* XXX: Why would a "DELETED" flag be reset here? I'd have
709 thought that a "deleted" flag means that the port was
710 permanently gone, but here we can make it reappear by it
711 being in close during the "deletion".
713 PortP->State &= ~(RIO_CLOSING|RIO_DELETED);
714 if (PortP->firstOpen)
716 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
717 rio_dprintk (RIO_DEBUG_TTY, "Return from close\n");
723 ** decide if we need to use the line discipline.
724 ** This routine can return one of three values:
725 ** COOK_RAW if no processing has to be done by the line discipline or the card
726 ** COOK_WELL if the line discipline must be used to do the processing
727 ** COOK_MEDIUM if the card can do all the processing necessary.
730 RIOCookMode(struct ttystatics *tp)
733 ** We can't handle tm.c_mstate != 0 on SCO
734 ** We can't handle mapping
735 ** We can't handle non-ttwrite line disc.
736 ** We can't handle lflag XCASE
737 ** We can handle oflag OPOST & (OCRNL, ONLCR, TAB3)
743 if (!(tp->tm.c_oflag & OPOST)) /* No post processing */
744 return COOK_RAW; /* Raw mode o/p */
746 if ( tp->tm.c_lflag & XCASE )
747 return COOK_WELL; /* Use line disc */
749 if (tp->tm.c_oflag & ~(OPOST | ONLCR | OCRNL | TAB3 ) )
750 return COOK_WELL; /* Use line disc for strange modes */
752 if ( tp->tm.c_oflag == OPOST ) /* If only OPOST is set, do RAW */
756 ** So, we need to output process!
766 rio_dprintk (RIO_DEBUG_TTY, "RIOHalted set\n");
767 PortP->Config = 0; /* Direct semaphore */
768 PortP->PortState = 0;
769 PortP->firstOpen = 0;
770 PortP->FlushCmdBodge = 0;
771 PortP->ModemState = PortP->CookMode = 0;
773 PortP->WflushFlag = 0;
774 PortP->MagicFlags = 0;
775 PortP->RxDataStart = 0;
776 PortP->TxBufferIn = 0;
777 PortP->TxBufferOut = 0;
781 ** Put a command onto a port.
782 ** The PortPointer, command, length and arg are passed.
783 ** The len is the length *inclusive* of the command byte,
784 ** and so for a command that takes no data, len==1.
785 ** The arg is a single byte, and is only used if len==2.
786 ** Other values of len aren't allowed, and will cause
789 int RIOShortCommand(struct rio_info *p, struct Port *PortP,
790 int command, int len, int arg)
793 int retries = 20; /* at 10 per second -> 2 seconds */
796 rio_dprintk (RIO_DEBUG_TTY, "entering shortcommand.\n");
799 if ( len < 1 || len > 2 )
800 cprintf(("STUPID LENGTH %d\n",len));
803 if ( PortP->State & RIO_DELETED ) {
804 rio_dprintk (RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n");
807 rio_spin_lock_irqsave(&PortP->portSem, flags);
810 ** If the port is in use for pre-emptive command, then wait for it to
813 while ( (PortP->InUse != NOT_INUSE) && !p->RIOHalted ) {
814 rio_dprintk (RIO_DEBUG_TTY, "Waiting for not in use (%d)\n",
816 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
817 if (retries-- <= 0) {
820 if (RIODelay_ni(PortP, HUNDRED_MS) == RIO_FAIL) {
823 rio_spin_lock_irqsave(&PortP->portSem, flags);
825 if ( PortP->State & RIO_DELETED ) {
826 rio_dprintk (RIO_DEBUG_TTY, "Short command to deleted RTA ignored\n");
827 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
831 while ( !can_add_transmit(&PacketP,PortP) && !p->RIOHalted ) {
832 rio_dprintk (RIO_DEBUG_TTY, "Waiting to add short command to queue (%d)\n", retries);
833 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
834 if (retries-- <= 0) {
835 rio_dprintk (RIO_DEBUG_TTY, "out of tries. Failing\n");
838 if ( RIODelay_ni(PortP, HUNDRED_MS)==RIO_FAIL ) {
841 rio_spin_lock_irqsave(&PortP->portSem, flags);
844 if ( p->RIOHalted ) {
845 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
850 ** set the command byte and the argument byte
852 WBYTE(PacketP->data[0] , command);
855 WBYTE(PacketP->data[1] , arg);
858 ** set the length of the packet and set the command bit.
860 WBYTE(PacketP->len , PKT_CMD_BIT | len);
864 ** Count characters transmitted for port statistics reporting
866 if (PortP->statsGather)
867 PortP->txchars += len;
869 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
870 return p->RIOHalted ? RIO_FAIL : ~RIO_FAIL;
876 ** This is an ioctl interface. This is the twentieth century. You know what
880 riotioctl(struct rio_info *p, struct tty_struct *tty, int cmd, caddr_t arg)
882 register struct Port *PortP;
883 register struct ttystatics *tp;
885 int ParamSemIncremented = 0;
886 int old_oflag, old_cflag, old_iflag, changed, oldcook;
888 unsigned char sio_regs[5]; /* Here be magic */
892 uint SysPort = rio_minor(tty);
893 int Modem = rio_ismodem(tty);
896 rio_dprintk (RIO_DEBUG_TTY, "port ioctl SysPort %d command 0x%x argument 0x%x %s\n",
897 SysPort, cmd, arg, Modem?"Modem":"tty") ;
899 if ( SysPort >= RIO_PORTS ) {
900 rio_dprintk (RIO_DEBUG_TTY, "Bad port number %d\n", SysPort);
904 PortP = p->RIOPortp[SysPort];
907 rio_spin_lock_irqsave(&PortP->portSem, flags);
910 PortP->Stat.IoctlCnt++;
913 if ( PortP->State & RIO_DELETED ) {
914 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
919 if ( p->RIOHalted ) {
921 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
926 ** Count ioctls for port statistics reporting
928 if (PortP->statsGather)
932 ** Specialix RIO Ioctl calls
938 PortP->State |= RIO_TRIAD_MODE;
940 PortP->State &= ~RIO_TRIAD_MODE;
942 ** Normally, when istrip is set on a port, a config is
943 ** sent to the RTA instructing the CD1400 to do the
944 ** stripping. In TRIAD mode, the interrupt receive routine
945 ** must do the stripping instead, since it has to detect
946 ** an 8 bit function key sequence. If istrip is set with
947 ** TRIAD mode on(off), and 8 bit data is being read by
948 ** the port, the user then turns TRIAD mode off(on), the RTA
949 ** must be reconfigured (not) to do the stripping.
950 ** Hence we call RIOParam here.
952 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
953 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
957 rio_dprintk (RIO_DEBUG_TTY, "tbusy/tstop monitoring %sabled\n",
959 /* MonitorTstate = 0 ;*/
960 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
961 RIOParam(PortP, CONFIG, Modem, OK_TO_SLEEP);
964 case TCRIOSTATE: /* current state of Modem input pins */
965 rio_dprintk (RIO_DEBUG_TTY, "TCRIOSTATE\n");
966 if (RIOPreemptiveCmd(p, PortP, MGET) == RIO_FAIL)
967 rio_dprintk (RIO_DEBUG_TTY, "TCRIOSTATE command failed\n");
968 PortP->State |= RIO_BUSY;
969 current = PortP->ModemState;
970 if ( copyout((caddr_t)¤t, (int)arg,
971 sizeof(current))==COPYFAIL ) {
972 rio_dprintk (RIO_DEBUG_TTY, "Copyout failed\n");
973 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
976 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
979 case TCRIOMBIS: /* Set modem lines */
980 case TCRIOMBIC: /* Clear modem lines */
981 rio_dprintk (RIO_DEBUG_TTY, "TCRIOMBIS/TCRIOMBIC\n");
982 if (cmd == TCRIOMBIS) {
985 PortP->ModemState |= (ushort)state;
986 PortP->ModemLines = (ulong) arg;
987 if (RIOPreemptiveCmd(p, PortP, MBIS) == RIO_FAIL)
988 rio_dprintk (RIO_DEBUG_TTY,
989 "TCRIOMBIS command failed\n");
995 PortP->ModemState &= ~(ushort)state;
996 PortP->ModemLines = (ulong) arg;
997 if (RIOPreemptiveCmd(p, PortP, MBIC) == RIO_FAIL)
998 rio_dprintk (RIO_DEBUG_TTY, "TCRIOMBIC command failed\n");
1000 PortP->State |= RIO_BUSY;
1001 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1004 case TCRIOXPON: /* set Xprint ON string */
1005 rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPON\n");
1006 if ( copyin((int)arg, (caddr_t)PortP->Xprint.XpOn,
1007 MAX_XP_CTRL_LEN)==COPYFAIL ) {
1008 rio_dprintk (RIO_DEBUG_TTY, "Copyin failed\n");
1009 PortP->Xprint.XpOn[0] = '\0';
1010 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1013 PortP->Xprint.XpOn[MAX_XP_CTRL_LEN-1] = '\0';
1014 PortP->Xprint.XpLen = RIOStrlen(PortP->Xprint.XpOn)+
1015 RIOStrlen(PortP->Xprint.XpOff);
1016 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1019 case TCRIOXPOFF: /* set Xprint OFF string */
1020 rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPOFF\n");
1021 if ( copyin( (int)arg, (caddr_t)PortP->Xprint.XpOff,
1022 MAX_XP_CTRL_LEN)==COPYFAIL ) {
1023 rio_dprintk (RIO_DEBUG_TTY, "Copyin failed\n");
1024 PortP->Xprint.XpOff[0] = '\0';
1025 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1028 PortP->Xprint.XpOff[MAX_XP_CTRL_LEN-1] = '\0';
1029 PortP->Xprint.XpLen = RIOStrlen(PortP->Xprint.XpOn)+
1030 RIOStrlen(PortP->Xprint.XpOff);
1031 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1034 case TCRIOXPCPS: /* set Xprint CPS string */
1035 rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPCPS\n");
1036 if ( (uint)arg > p->RIOConf.MaxXpCps ||
1037 (uint)arg < p->RIOConf.MinXpCps ) {
1038 rio_dprintk (RIO_DEBUG_TTY, "%d CPS out of range\n",arg);
1039 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1043 PortP->Xprint.XpCps = (uint)arg;
1044 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1048 rio_dprintk (RIO_DEBUG_TTY, "TCRIOXPRINT\n");
1049 if ( copyout((caddr_t)&PortP->Xprint, (int)arg,
1050 sizeof(struct Xprint))==COPYFAIL ) {
1051 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1054 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1058 rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXANYON\n");
1059 PortP->Config |= RIO_IXANY;
1060 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1064 rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXANYOFF\n");
1065 PortP->Config &= ~RIO_IXANY;
1066 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1070 rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXONON\n");
1071 PortP->Config |= RIO_IXON;
1072 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1076 rio_dprintk (RIO_DEBUG_TTY, "TCRIOIXONOFF\n");
1077 PortP->Config &= ~RIO_IXON;
1078 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1082 ** 15.10.1998 ARG - ESIL 0761 part fix
1083 ** Added support for CTS and RTS flow control ioctls :
1085 case TCRIOCTSFLOWEN:
1086 rio_dprintk (RIO_DEBUG_TTY, "TCRIOCTSFLOWEN\n");
1087 PortP->Config |= RIO_CTSFLOW;
1088 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1089 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
1092 case TCRIOCTSFLOWDIS:
1093 rio_dprintk (RIO_DEBUG_TTY, "TCRIOCTSFLOWDIS\n");
1094 PortP->Config &= ~RIO_CTSFLOW;
1095 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1096 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
1099 case TCRIORTSFLOWEN:
1100 rio_dprintk (RIO_DEBUG_TTY, "TCRIORTSFLOWEN\n");
1101 PortP->Config |= RIO_RTSFLOW;
1102 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1103 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
1106 case TCRIORTSFLOWDIS:
1107 rio_dprintk (RIO_DEBUG_TTY, "TCRIORTSFLOWDIS\n");
1108 PortP->Config &= ~RIO_RTSFLOW;
1109 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1110 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
1113 /* end ESIL 0761 part fix */
1125 ttyseth(PortP, tp, (struct old_sgttyb *)arg);
1131 rio_dprintk (RIO_DEBUG_TTY, "NON POSIX ioctl\n");
1132 ttyseth_pv(PortP, tp, (struct termios *)arg, 0);
1134 case TCSETAP: /* posix tcsetattr() */
1135 case TCSETAWP: /* posix tcsetattr() */
1136 case TCSETAFP: /* posix tcsetattr() */
1137 rio_dprintk (RIO_DEBUG_TTY, "NON POSIX SYSV ioctl\n");
1138 ttyseth_pv(PortP, tp, (struct termios *)arg, 1);
1144 ** If its any of the commands that require the port to be in the
1145 ** non-busy state wait until all output has drained
1147 if (!ioctl_processed)
1153 #define OLD_POSIX ('x' << 8)
1154 #define OLD_POSIX_SETA (OLD_POSIX | 2)
1155 #define OLD_POSIX_SETAW (OLD_POSIX | 3)
1156 #define OLD_POSIX_SETAF (OLD_POSIX | 4)
1157 #define NEW_POSIX (('i' << 24) | ('X' << 16))
1158 #define NEW_POSIX_SETA (NEW_POSIX | 2)
1159 #define NEW_POSIX_SETAW (NEW_POSIX | 3)
1160 #define NEW_POSIX_SETAF (NEW_POSIX | 4)
1161 case OLD_POSIX_SETA:
1162 case OLD_POSIX_SETAW:
1163 case OLD_POSIX_SETAF:
1164 case NEW_POSIX_SETA:
1165 case NEW_POSIX_SETAW:
1166 case NEW_POSIX_SETAF:
1172 rio_dprintk (RIO_DEBUG_TTY, "wait for non-BUSY, semaphore set\n");
1174 ** Wait for drain here, at least as far as the double buffer
1177 /* XXX Does the above comment mean that this has
1178 still to be implemented? -- REW */
1179 /* XXX Is the locking OK together with locking
1180 in txenable? (Deadlock?) -- REW */
1182 RIOTxEnable((char *)PortP);
1188 old_cflag = tp->tm.c_cflag;
1189 old_iflag = tp->tm.c_iflag;
1190 old_oflag = tp->tm.c_oflag;
1191 oldcook = PortP->CookMode;
1193 if ( p->RIOHalted ) {
1194 RIOClearUp( PortP );
1195 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1200 PortP->FlushCmdBodge = 0;
1203 ** If the port is locked, and it is reconfigured, we want
1204 ** to restore the state of the tty structure so the change is NOT
1208 tp->tm.c_iflag = PortP->StoredTty.iflag;
1209 tp->tm.c_oflag = PortP->StoredTty.oflag;
1210 tp->tm.c_cflag = PortP->StoredTty.cflag;
1211 tp->tm.c_lflag = PortP->StoredTty.lflag;
1212 tp->tm.c_line = PortP->StoredTty.line;
1213 for (i = 0; i < NCC + 1; i++)
1214 tp->tm.c_cc[i] = PortP->StoredTty.cc[i];
1218 ** If the port is set to store the parameters, and it is
1219 ** reconfigured, we want to save the current tty struct so it
1220 ** may be restored on the next open.
1223 PortP->StoredTty.iflag = tp->tm.c_iflag;
1224 PortP->StoredTty.oflag = tp->tm.c_oflag;
1225 PortP->StoredTty.cflag = tp->tm.c_cflag;
1226 PortP->StoredTty.lflag = tp->tm.c_lflag;
1227 PortP->StoredTty.line = tp->tm.c_line;
1228 for (i = 0; i < NCC + 1; i++)
1229 PortP->StoredTty.cc[i] = tp->tm.c_cc[i];
1233 changed = (tp->tm.c_cflag != old_cflag) ||
1234 (tp->tm.c_iflag != old_iflag) ||
1235 (tp->tm.c_oflag != old_oflag);
1237 PortP->CookMode = RIOCookMode(tp); /* Set new cooking mode */
1239 rio_dprintk (RIO_DEBUG_TTY, "RIOIoctl changed %d newcook %d oldcook %d\n",
1240 changed,PortP->CookMode,oldcook);
1242 #ifdef MODEM_SUPPORT
1244 ** kludge to force CARR_ON if CLOCAL set
1246 if ((tp->tm.c_cflag & CLOCAL) || (PortP->ModemState & MSVR1_CD)) {
1247 tp->tm.c_state |= CARR_ON;
1248 wakeup ((caddr_t)&tp->tm.c_canq);
1252 if ( p->RIOHalted ) {
1253 RIOClearUp( PortP );
1254 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1259 ** Re-configure if modes or cooking have changed
1261 if (changed || oldcook != PortP->CookMode || (ioctl_processed)) {
1262 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1263 rio_dprintk (RIO_DEBUG_TTY, "Ioctl changing the PORT settings\n");
1264 RIOParam(PortP,CONFIG,Modem,OK_TO_SLEEP);
1265 rio_spin_lock_irqsave(&PortP->portSem, flags);
1269 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1270 RIOClearUp( PortP );
1274 rio_spin_unlock_irqrestore(&PortP->portSem, flags);
1279 ttyseth -- set hardware dependent tty settings
1282 ttyseth(PortP, s, sg)
1283 struct Port * PortP;
1284 struct ttystatics * s;
1285 struct old_sgttyb *sg;
1287 struct old_sgttyb * tsg;
1288 struct termios *tp = &s->tm;
1292 if (sg->sg_flags & (EVENP|ODDP)) {
1293 tp->c_cflag &= PARENB;
1294 if (sg->sg_flags & EVENP) {
1295 if (sg->sg_flags & ODDP) {
1296 tp->c_cflag &= V_CS7;
1297 tp->c_cflag &= ~PARENB;
1300 tp->c_cflag &= V_CS7;
1301 tp->c_cflag &= PARENB;
1302 tp->c_cflag &= PARODD;
1305 else if (sg->sg_flags & ODDP) {
1306 tp->c_cflag &= V_CS7;
1307 tp->c_cflag &= PARENB;
1308 tp->c_cflag &= PARODD;
1311 tp->c_cflag &= V_CS7;
1312 tp->c_cflag &= PARENB;
1316 * Use ispeed as the desired speed. Most implementations don't handle
1317 * separate input and output speeds very well. If the RIO handles this,
1318 * I will have to use separate sets of flags to store them in the
1321 if ( !sg->sg_ospeed )
1322 sg->sg_ospeed = sg->sg_ispeed;
1324 sg->sg_ispeed = sg->sg_ospeed;
1325 if (sg->sg_ispeed > V_EXTB )
1326 sg->sg_ispeed = V_EXTB;
1327 if (sg->sg_ispeed < V_B0)
1328 sg->sg_ispeed = V_B0;
1330 tp->c_cflag = (tp->c_cflag & ~V_CBAUD) | conv_bv[(int)sg->sg_ispeed];
1334 ttyseth_pv -- set hardware dependent tty settings using either the
1335 POSIX termios structure or the System V termio structure.
1336 sysv = 0 => (POSIX): struct termios *sg
1337 sysv != 0 => (System V): struct termio *sg
1340 ttyseth_pv(PortP, s, sg, sysv)
1342 struct ttystatics *s;
1347 unsigned char csize;
1348 unsigned char cread;
1349 unsigned int lcr_flags;
1353 /* sg points to a System V termio structure */
1354 csize = ((struct termio *)sg)->c_cflag & CSIZE;
1355 cread = ((struct termio *)sg)->c_cflag & CREAD;
1356 speed = conv_vb[((struct termio *)sg)->c_cflag & V_CBAUD];
1359 /* sg points to a POSIX termios structure */
1360 csize = sg->c_cflag & CSIZE;
1361 cread = sg->c_cflag & CREAD;
1362 speed = conv_vb[sg->c_cflag & V_CBAUD];
1364 if (s->sg.sg_ispeed != speed || s->sg.sg_ospeed != speed) {
1365 s->sg.sg_ispeed = speed;
1366 s->sg.sg_ospeed = speed;
1367 s->tm.c_cflag = (s->tm.c_cflag & ~V_CBAUD) |
1368 conv_bv[(int)s->sg.sg_ispeed];