2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
4 * Copyright (C) 1990, 1992, 1998 Specialix International,
5 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk>
6 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au>
8 * Originally derived from: SunOS 4.x version
9 * Ported from BSDI version to FreeBSD by Peter Wemm.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notices, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notices, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. All advertising materials mentioning features or use of this software
20 * must display the following acknowledgement:
21 * This product includes software developed by Andy Rutter of
22 * Advanced Methods and Tools Ltd. based on original information
23 * from Specialix International.
24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix
25 * International may be used to endorse or promote products derived from
26 * this software without specific prior written permission.
28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED
29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
31 * NO EVENT SHALL THE AUTHORS BE LIABLE.
33 * $FreeBSD: src/sys/dev/si/si.c,v 1.101.2.1 2001/02/26 04:23:06 jlemon Exp $
34 * $DragonFly: src/sys/dev/serial/si/si.c,v 1.15 2005/06/08 08:25:50 okumoto Exp $
38 static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998",
39 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993",
40 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000";
43 #include "opt_compat.h"
44 #include "opt_debug_si.h"
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
49 #include <sys/ioctl_compat.h>
54 #include <sys/fcntl.h>
55 #include <sys/dkstat.h>
56 #include <sys/kernel.h>
57 #include <sys/malloc.h>
58 #include <sys/sysctl.h>
60 #include <sys/thread2.h>
61 #include <machine/bus.h>
63 #include <machine/resource.h>
65 #include <machine/clock.h>
70 #include <machine/stdarg.h>
77 * This device driver is designed to interface the Specialix International
78 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
79 * EISA or PCI bus machine.
81 * The controller is interfaced to the host via dual port RAM
84 * The code for the Host 1 (very old ISA cards) has not been tested.
87 #define POLL /* turn on poller to scan for lost interrupts */
88 #define REALPOLL /* on each poll, scan for work regardless */
89 #define POLLHZ (hz/10) /* 10 times per second */
90 #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE)
91 #define INT_COUNT 25000 /* max of 125 ints per second */
92 #define JET_INT_COUNT 100 /* max of 100 ints per second */
93 #define RXINT_COUNT 1 /* one rxint per 10 milliseconds */
95 enum si_mctl { GET, SET, BIS, BIC };
97 static void si_command(struct si_port *, int, int);
98 static int si_modem(struct si_port *, enum si_mctl, int);
99 static void si_write_enable(struct si_port *, int);
100 static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *);
101 static void si_start(struct tty *);
102 static void si_stop(struct tty *, int);
103 static timeout_t si_lstart;
104 static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
105 static void sihardclose(struct si_port *pp);
106 static void sidtrwakeup(void *chan);
109 static char *si_mctl2str(enum si_mctl cmd);
112 static int siparam(struct tty *, struct termios *);
114 static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
115 static char * si_modulename(int host_type, int uart_type);
117 static d_open_t siopen;
118 static d_close_t siclose;
119 static d_write_t siwrite;
120 static d_ioctl_t siioctl;
122 #define CDEV_MAJOR 68
123 static struct cdevsw si_cdevsw = {
125 /* maj */ CDEV_MAJOR,
126 /* flags */ D_TTY | D_KQFILTER,
137 /* strategy */ nostrategy,
140 /* kqfilter */ ttykqfilter
143 static int si_Nports;
144 static int si_Nmodules;
145 static int si_debug = 0; /* data, not bss, so it's patchable */
147 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
149 static struct tty *si__tty;
151 static int si_numunits;
152 static struct callout poll_ch;
154 devclass_t si_devclass;
156 #ifndef B2000 /* not standard, but the hardware knows it. */
159 static struct speedtab bdrates[] = {
160 { B75, CLK75, }, /* 0x0 */
161 { B110, CLK110, }, /* 0x1 */
162 { B150, CLK150, }, /* 0x3 */
163 { B300, CLK300, }, /* 0x4 */
164 { B600, CLK600, }, /* 0x5 */
165 { B1200, CLK1200, }, /* 0x6 */
166 { B2000, CLK2000, }, /* 0x7 */
167 { B2400, CLK2400, }, /* 0x8 */
168 { B4800, CLK4800, }, /* 0x9 */
169 { B9600, CLK9600, }, /* 0xb */
170 { B19200, CLK19200, }, /* 0xc */
171 { B38400, CLK38400, }, /* 0x2 (out of order!) */
172 { B57600, CLK57600, }, /* 0xd */
173 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
178 /* populated with approx character/sec rates - translated at card
179 * initialisation time to chars per tick of the clock */
180 static int done_chartimes = 0;
181 static struct speedtab chartimes[] = {
198 static volatile int in_intr = 0; /* Inside interrupt handler? */
201 static int si_pollrate; /* in addition to irq */
202 static int si_realpoll = 0; /* poll HW on timer */
204 SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
205 SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
207 static int init_finished = 0;
208 static void si_poll(void *);
212 * Array of adapter types and the corresponding RAM size. The order of
213 * entries here MUST match the ordinal of the adapter type.
215 static char *si_type[] = {
218 "SIMCA", /* FreeBSD does not support Microchannel */
227 * We have to make an 8 bit version of bcopy, since some cards can't
228 * deal with 32 bit I/O
231 si_bcopy(const void *src, void *dst, size_t len)
233 const uint8_t *src_byte = (const uint8_t *)src;
234 uint8_t *dst_byte = (uint8_t *)dst;
237 *dst_byte++ = *src_byte++;
241 si_vbcopy(const volatile void *src, void *dst, size_t len)
243 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
244 uint8_t *dst_byte = (uint8_t *)dst;
247 *dst_byte++ = *src_byte++;
251 si_bcopyv(const void *src, volatile void *dst, size_t len)
253 const uint8_t *src_byte = (const uint8_t *)src;
254 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
257 *dst_byte++ = *src_byte++;
261 * Attach the device. Initialize the card.
264 siattach(device_t dev)
269 volatile struct si_channel *ccbp;
270 volatile struct si_reg *regp;
271 volatile caddr_t maddr;
272 struct si_module *modp;
274 struct speedtab *spt;
275 int nmodule, nport, x, y;
279 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
280 callout_init(&poll_ch);
282 sc = device_get_softc(dev);
283 unit = device_get_unit(dev);
285 sc->sc_typename = si_type[sc->sc_type];
286 if (si_numunits < unit + 1)
287 si_numunits = unit + 1;
289 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
292 if (si_pollrate == 0) {
293 si_pollrate = POLLHZ; /* in addition to irq */
295 si_realpoll = 1; /* scan always */
300 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
301 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
303 sc->sc_ports = NULL; /* mark as uninitialised */
305 maddr = sc->sc_maddr;
307 /* Stop the CPU first so it won't stomp around while we load */
309 switch (sc->sc_type) {
311 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
314 *(maddr+SIPCIRESET) = 0;
316 case SIJETPCI: /* fall through to JET ISA */
318 *(maddr+SIJETCONFIG) = 0;
321 *(maddr+SIPLRESET) = 0;
324 *(maddr+SIRESET) = 0;
326 default: /* this should never happen */
327 printf("si%d: unsupported configuration\n", unit);
332 /* OK, now lets download the download code */
334 if (SI_ISJET(sc->sc_type)) {
335 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
336 unit, si3_t225_dsize));
337 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
339 DPRINT((0, DBG_DOWNLOAD,
340 "si%d: jet_bootstrap: nbytes %d -> %x\n",
341 unit, si3_t225_bsize, si3_t225_bootloadaddr));
342 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
345 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
346 unit, si2_z280_dsize));
347 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
351 /* Now start the CPU */
353 switch (sc->sc_type) {
355 /* modify the download code to tell it that it's on an EISA */
357 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
358 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
361 /* modify the download code to tell it that it's on a PCI */
363 *(maddr+SIPCIRESET) = 1;
364 *(maddr+SIPCIINTCL) = 0;
367 *(maddr+SIJETRESET) = 0;
368 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
371 *(maddr+SIJETRESET) = 0;
372 switch (sc->sc_irq) {
374 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
377 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
380 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
383 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
386 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
391 *(maddr+SIRESET_CL) = 0;
392 *(maddr+SIINTCL_CL) = 0;
395 *(maddr+SIPLRESET) = 0x10;
396 switch (sc->sc_irq) {
398 *(maddr+SIPLIRQ11) = 0x10;
401 *(maddr+SIPLIRQ12) = 0x10;
404 *(maddr+SIPLIRQ15) = 0x10;
407 *(maddr+SIPLIRQCLR) = 0x10;
409 default: /* this should _REALLY_ never happen */
410 printf("si%d: Uh, it was supported a second ago...\n", unit);
414 DELAY(1000000); /* wait around for a second */
416 regp = (struct si_reg *)maddr;
418 /* wait max of 5 sec for init OK */
419 while (regp->initstat == 0 && y++ < 10) {
422 switch (regp->initstat) {
424 printf("si%d: startup timeout - aborting\n", unit);
425 sc->sc_type = SIEMPTY;
428 if (SI_ISJET(sc->sc_type)) {
429 /* set throttle to 100 times per second */
430 regp->int_count = JET_INT_COUNT;
431 /* rx_intr_count is a NOP in Jet */
433 /* set throttle to 125 times per second */
434 regp->int_count = INT_COUNT;
435 /* rx intr max of 25 times per second */
436 regp->rx_int_count = RXINT_COUNT;
438 regp->int_pending = 0; /* no intr pending */
439 regp->int_scounter = 0; /* reset counter */
443 * No modules found, so give up on this one.
445 printf("si%d: %s - no ports found\n", unit,
446 si_type[sc->sc_type]);
449 printf("si%d: download code version error - initstat %x\n",
450 unit, regp->initstat);
455 * First time around the ports just count them in order
456 * to allocate some memory.
459 modp = (struct si_module *)(maddr + 0x80);
461 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
462 switch (modp->sm_type) {
464 DPRINT((0, DBG_DOWNLOAD,
465 "si%d: Found old TA4 module, 4 ports\n",
470 DPRINT((0, DBG_DOWNLOAD,
471 "si%d: Found old TA8 module, 8 ports\n",
476 DPRINT((0, DBG_DOWNLOAD,
477 "si%d: Found ASIC TA4 module, 4 ports\n",
482 DPRINT((0, DBG_DOWNLOAD,
483 "si%d: Found ASIC TA8 module, 8 ports\n",
488 DPRINT((0, DBG_DOWNLOAD,
489 "si%d: Found CD1400 module, 8 ports\n",
494 DPRINT((0, DBG_DOWNLOAD,
495 "si%d: Found SXDC module, 8 ports\n",
500 printf("si%d: unknown module type %d\n",
501 unit, modp->sm_type);
505 /* this was limited in firmware and is also a driver issue */
506 if ((nport + x) > SI_MAXPORTPERCARD) {
507 printf("si%d: extra ports ignored\n", unit);
516 if (modp->sm_next == 0)
518 modp = (struct si_module *)
519 (maddr + (unsigned)(modp->sm_next & 0x7fff));
521 sc->sc_ports = malloc(sizeof(struct si_port) * nport,
522 M_DEVBUF, M_WAITOK | M_ZERO);
523 sc->sc_nport = nport;
524 for (n = 0; n < nport; ++n) {
525 callout_init(&sc->sc_ports[n].lstart_ch);
526 callout_init(&sc->sc_ports[n].dtr_ch);
530 * allocate tty structures for ports
532 tp = malloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
536 * Scan round the ports again, this time initialising.
540 modp = (struct si_module *)(maddr + 0x80);
541 uart_type = 1000; /* arbitary, > uchar_max */
543 switch (modp->sm_type) {
566 ccbp = (struct si_channel *)((char *)modp + 0x100);
567 if (uart_type == 1000)
568 uart_type = ccbp->type;
569 else if (uart_type != ccbp->type)
570 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
572 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
573 uart_type, si_modulename(sc->sc_type, uart_type));
575 for (x = 0; x < nport; x++, pp++, ccbp++) {
576 pp->sp_ccb = ccbp; /* save the address */
578 pp->sp_pend = IDLE_CLOSE;
579 pp->sp_state = 0; /* internal flag */
580 pp->sp_dtr_wait = 3 * hz;
581 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
582 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
583 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
584 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
585 termioschars(&pp->sp_iin);
586 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
588 pp->sp_iout = pp->sp_iin;
591 if (modp->sm_next == 0) {
592 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
598 si_modulename(sc->sc_type, uart_type));
601 modp = (struct si_module *)
602 (maddr + (unsigned)(modp->sm_next & 0x7fff));
604 if (done_chartimes == 0) {
605 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
606 if ((spt->sp_code /= hz) == 0)
612 cdevsw_add(&si_cdevsw, 0x7f, unit);
613 /* path name devsw minor type uid gid perm*/
614 for (x = 0; x < sc->sc_nport; x++) {
615 /* sync with the manuals that start at 1 */
616 y = x + 1 + unit * (1 << SI_CARDSHIFT);
617 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y);
618 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
619 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
620 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
621 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
622 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
624 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control");
629 siopen(dev_t dev, int flag, int mode, struct thread *td)
635 volatile struct si_channel *ccbp;
637 int mynor = minor(dev);
639 /* quickly let in /dev/si_control */
640 if (IS_CONTROLDEV(mynor)) {
641 if ((error = suser(td)))
646 card = SI_CARD(mynor);
647 sc = devclass_get_softc(si_devclass, card);
651 if (sc->sc_type == SIEMPTY) {
652 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
653 card, sc->sc_typename));
657 port = SI_PORT(mynor);
658 if (port >= sc->sc_nport) {
659 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
660 card, sc->sc_nport));
666 * We've now got a device, so start the poller.
668 if (init_finished == 0) {
669 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
674 /* initial/lock device */
675 if (IS_STATE(mynor)) {
679 pp = sc->sc_ports + port;
680 tp = pp->sp_tty; /* the "real" tty */
682 ccbp = pp->sp_ccb; /* Find control block */
683 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n",
684 devtoname(dev), flag, mode, td));
686 crit_enter(); /* Keep others out */
690 while (pp->sp_state & SS_DTR_OFF) {
691 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
696 if (tp->t_state & TS_ISOPEN) {
698 * The device is open, so everything has been initialised.
701 if (IS_CALLOUT(mynor)) {
702 if (!pp->sp_active_out) {
707 if (pp->sp_active_out) {
708 if (flag & O_NONBLOCK) {
712 error = tsleep(&pp->sp_active_out,
719 if (tp->t_state & TS_XCLUDE &&
721 DPRINT((pp, DBG_OPEN|DBG_FAIL,
722 "already open and EXCLUSIVE set\n"));
728 * The device isn't open, so there are no conflicts.
729 * Initialize it. Avoid sleep... :-)
731 DPRINT((pp, DBG_OPEN, "first open\n"));
732 tp->t_oproc = si_start;
733 tp->t_stop = si_stop;
734 tp->t_param = siparam;
736 tp->t_termios = mynor & SI_CALLOUT_MASK
737 ? pp->sp_iout : pp->sp_iin;
739 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
741 ++pp->sp_wopeners; /* in case of sleep in siparam */
743 error = siparam(tp, &tp->t_termios);
748 /* XXX: we should goto_top if siparam slept */
750 /* set initial DCD state */
751 pp->sp_last_hi_ip = ccbp->hi_ip;
752 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
753 (*linesw[tp->t_line].l_modem)(tp, 1);
757 /* whoops! we beat the close! */
758 if (pp->sp_state & SS_CLOSING) {
759 /* try and stop it from proceeding to bash the hardware */
760 pp->sp_state &= ~SS_CLOSING;
764 * Wait for DCD if necessary
766 if (!(tp->t_state & TS_CARR_ON) &&
767 !IS_CALLOUT(mynor) &&
768 !(tp->t_cflag & CLOCAL) &&
769 !(flag & O_NONBLOCK)) {
771 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
772 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
779 error = (*linesw[tp->t_line].l_open)(dev, tp);
780 si_disc_optim(tp, &tp->t_termios, pp);
781 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
782 pp->sp_active_out = TRUE;
784 pp->sp_state |= SS_OPEN; /* made it! */
789 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
791 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
798 siclose(dev_t dev, int flag, int mode, struct thread *td)
803 int mynor = minor(dev);
805 if (IS_SPECIAL(mynor))
810 pp = MINOR2PP(mynor);
813 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n",
814 devtoname(dev), flag, mode, td, pp->sp_state));
816 /* did we sleep and loose a race? */
817 if (pp->sp_state & SS_CLOSING) {
818 /* error = ESOMETING? */
822 /* begin race detection.. */
823 pp->sp_state |= SS_CLOSING;
825 si_write_enable(pp, 0); /* block writes for ttywait() */
827 /* THIS MAY SLEEP IN TTYWAIT!!! */
828 (*linesw[tp->t_line].l_close)(tp, flag);
830 si_write_enable(pp, 1);
832 /* did we sleep and somebody started another open? */
833 if (!(pp->sp_state & SS_CLOSING)) {
834 /* error = ESOMETING? */
837 /* ok. we are now still on the right track.. nuke the hardware */
839 if (pp->sp_state & SS_LSTART) {
840 callout_stop(&pp->lstart_ch);
841 pp->sp_state &= ~SS_LSTART;
844 si_stop(tp, FREAD | FWRITE);
848 pp->sp_state &= ~SS_OPEN;
851 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
857 sihardclose(struct si_port *pp)
860 volatile struct si_channel *ccbp;
865 ccbp = pp->sp_ccb; /* Find control block */
866 if (tp->t_cflag & HUPCL ||
867 (!pp->sp_active_out &&
868 !(ccbp->hi_ip & IP_DCD) &&
869 !(pp->sp_iin.c_cflag && CLOCAL)) ||
870 !(tp->t_state & TS_ISOPEN)) {
872 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
873 (void) si_command(pp, FCLOSE, SI_NOWAIT);
875 if (pp->sp_dtr_wait != 0) {
876 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
878 pp->sp_state |= SS_DTR_OFF;
882 pp->sp_active_out = FALSE;
883 wakeup((caddr_t)&pp->sp_active_out);
884 wakeup(TSA_CARR_ON(tp));
891 * called at splsoftclock()...
894 sidtrwakeup(void *chan)
900 pp = (struct si_port *)chan;
901 pp->sp_state &= ~SS_DTR_OFF;
902 wakeup(&pp->sp_dtr_wait);
908 siwrite(dev_t dev, struct uio *uio, int flag)
913 int mynor = minor(dev);
915 if (IS_SPECIAL(mynor)) {
916 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
919 pp = MINOR2PP(mynor);
921 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag));
925 * If writes are currently blocked, wait on the "real" tty
927 while (pp->sp_state & SS_BLOCKWRITE) {
928 pp->sp_state |= SS_WAITWRITE;
929 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
930 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
931 "siwrite", tp->t_timeout))) {
932 if (error == EWOULDBLOCK)
938 error = (*linesw[tp->t_line].l_write)(tp, uio, flag);
946 siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
951 int mynor = minor(dev);
953 #if defined(COMPAT_43)
958 if (IS_SI_IOCTL(cmd))
959 return(si_Sioctl(dev, cmd, data, flag, td));
961 pp = MINOR2PP(mynor);
964 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
965 devtoname(dev), cmd, data, flag));
966 if (IS_STATE(mynor)) {
969 switch (mynor & SI_STATE_MASK) {
970 case SI_INIT_STATE_MASK:
971 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
973 case SI_LOCK_STATE_MASK:
974 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
984 *ct = *(struct termios *)data;
987 *(struct termios *)data = *ct;
990 *(int *)data = TTYDISC;
993 bzero(data, sizeof(struct winsize));
1000 * Do the old-style ioctl compat routines...
1002 #if defined(COMPAT_43)
1003 term = tp->t_termios;
1005 error = ttsetcompat(tp, &cmd, data, &term);
1009 data = (caddr_t)&term;
1012 * Do the initial / lock state business
1014 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1016 struct termios *dt = (struct termios *)data;
1017 struct termios *lt = mynor & SI_CALLOUT_MASK
1018 ? &pp->sp_lout : &pp->sp_lin;
1020 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1021 (dt->c_iflag & ~lt->c_iflag);
1022 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1023 (dt->c_oflag & ~lt->c_oflag);
1024 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1025 (dt->c_cflag & ~lt->c_cflag);
1026 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1027 (dt->c_lflag & ~lt->c_lflag);
1028 for (cc = 0; cc < NCCS; ++cc)
1029 if (lt->c_cc[cc] != 0)
1030 dt->c_cc[cc] = tp->t_cc[cc];
1031 if (lt->c_ispeed != 0)
1032 dt->c_ispeed = tp->t_ispeed;
1033 if (lt->c_ospeed != 0)
1034 dt->c_ospeed = tp->t_ospeed;
1038 * Block user-level writes to give the ttywait()
1039 * a chance to completely drain for commands
1040 * that require the port to be in a quiescent state.
1049 blocked++; /* block writes for ttywait() and siparam() */
1050 si_write_enable(pp, 0);
1053 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td);
1054 if (error != ENOIOCTL)
1059 error = ttioctl(tp, cmd, data, flag);
1060 si_disc_optim(tp, &tp->t_termios, pp);
1061 if (error != ENOIOCTL) {
1069 si_command(pp, SBREAK, SI_WAIT);
1072 si_command(pp, EBREAK, SI_WAIT);
1075 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1078 (void) si_modem(pp, SET, 0);
1081 (void) si_modem(pp, SET, *(int *)data);
1084 (void) si_modem(pp, BIS, *(int *)data);
1087 (void) si_modem(pp, BIC, *(int *)data);
1090 *(int *)data = si_modem(pp, GET, 0);
1093 /* must be root since the wait applies to following logins */
1096 pp->sp_dtr_wait = *(int *)data * hz / 100;
1099 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1107 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1109 si_write_enable(pp, 1);
1114 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1117 si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td)
1119 struct si_softc *xsc;
1120 struct si_port *xpp;
1121 volatile struct si_reg *regp;
1123 struct si_pstat *sps;
1126 int mynor = minor(dev);
1128 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1129 devtoname(dev), cmd, data, flag));
1132 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1133 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1134 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1137 if (!IS_CONTROLDEV(mynor)) {
1138 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1142 crit_enter(); /* better safe than sorry */
1146 #define SUCHECK if ((error = suser(td))) goto out
1164 * Check that a controller for this port exists
1167 /* may also be a struct si_pstat, a superset of si_tcsi */
1169 dp = (struct si_tcsi *)data;
1170 sps = (struct si_pstat *)data;
1172 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1173 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1178 * And check that a port exists
1181 if (port < 0 || port >= xsc->sc_nport) {
1185 xpp = xsc->sc_ports + port;
1186 regp = (struct si_reg *)xsc->sc_maddr;
1196 xpp->sp_debug = DBG_ALL;
1197 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1198 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1205 case TCSISDBG_LEVEL:
1206 case TCSIGDBG_LEVEL:
1208 if (cmd == TCSIGDBG_LEVEL) {
1209 dp->tc_dbglvl = xpp->sp_debug;
1212 xpp->sp_debug = dp->tc_dbglvl;
1220 dp->tc_int = regp->rx_int_count;
1224 regp->rx_int_count = dp->tc_int;
1227 dp->tc_int = regp->int_count;
1231 regp->int_count = dp->tc_int;
1234 dp->tc_int = xpp->sp_ccb->hi_ip;
1236 /* these next three use a different structure */
1239 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1243 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1247 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1255 return(error); /* success */
1259 * siparam() : Configure line params
1260 * called at spltty();
1261 * this may sleep, does not flush, nor wait for drain, nor block writes
1262 * caller must arrange this if it's important..
1265 siparam(struct tty *tp, struct termios *t)
1267 struct si_port *pp = TP2PP(tp);
1268 volatile struct si_channel *ccbp;
1269 int cflag, iflag, oflag, lflag;
1270 int error = 0; /* shutup gcc */
1271 int ispeed = 0; /* shutup gcc */
1272 int ospeed = 0; /* shutup gcc */
1275 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1280 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1281 oflag, cflag, iflag, lflag));
1283 /* XXX - if Jet host and SXDC module, use extended baud rates */
1285 /* if not hung up.. */
1286 if (t->c_ospeed != 0) {
1287 /* translate baud rate to firmware values */
1288 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1289 ispeed = t->c_ispeed ?
1290 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1292 /* enforce legit baud rate */
1293 if (ospeed < 0 || ispeed < 0)
1301 /* ========== set hi_break ========== */
1303 if (iflag & IGNBRK) /* Breaks */
1305 if (iflag & BRKINT) /* Interrupt on break? */
1307 if (iflag & PARMRK) /* Parity mark? */
1309 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1311 ccbp->hi_break = val;
1313 /* ========== set hi_csr ========== */
1314 /* if not hung up.. */
1315 if (t->c_ospeed != 0) {
1316 /* Set I/O speeds */
1317 val = (ispeed << 4) | ospeed;
1321 /* ========== set hi_mr2 ========== */
1323 if (cflag & CSTOPB) /* Stop bits */
1328 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1329 * a DCE, hence the reverse sense of RTS and CTS
1331 /* Output Flow - RTS must be raised before data can be sent */
1332 if (cflag & CCTS_OFLOW)
1337 /* ========== set hi_mr1 ========== */
1339 if (!(cflag & PARENB)) /* Parity */
1346 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1348 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1350 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1352 } else { /* Must be 5 */
1356 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1357 * a DCE, hence the reverse sense of RTS and CTS
1359 /* Input Flow - CTS is raised when port is ready to receive data */
1360 if (cflag & CRTS_IFLOW)
1365 /* ========== set hi_mask ========== */
1367 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1369 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1371 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1373 } else { /* Must be 5 */
1379 ccbp->hi_mask = val;
1381 /* ========== set hi_prtcl ========== */
1382 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1392 ccbp->hi_prtcl = val;
1395 /* ========== set hi_{rx|tx}{on|off} ========== */
1396 /* XXX: the card TOTALLY shields us from the flow control... */
1397 ccbp->hi_txon = t->c_cc[VSTART];
1398 ccbp->hi_txoff = t->c_cc[VSTOP];
1400 ccbp->hi_rxon = t->c_cc[VSTART];
1401 ccbp->hi_rxoff = t->c_cc[VSTOP];
1403 /* ========== send settings to the card ========== */
1404 /* potential sleep here */
1405 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1406 si_command(pp, LOPEN, SI_WAIT); /* open it */
1408 si_command(pp, CONFIG, SI_WAIT); /* change params */
1410 /* ========== set DTR etc ========== */
1411 /* Hangup if ospeed == 0 */
1412 if (t->c_ospeed == 0) {
1413 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1416 * If the previous speed was 0, may need to re-enable
1419 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1422 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1423 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1430 * Enable or Disable the writes to this channel...
1431 * "state" -> enabled = 1; disabled = 0;
1434 si_write_enable(struct si_port *pp, int state)
1440 pp->sp_state &= ~SS_BLOCKWRITE;
1441 if (pp->sp_state & SS_WAITWRITE) {
1442 pp->sp_state &= ~SS_WAITWRITE;
1444 wakeup((caddr_t)pp);
1447 pp->sp_state |= SS_BLOCKWRITE;
1454 * Set/Get state of modem control lines.
1455 * Due to DCE-like behaviour of the adapter, some signals need translation:
1460 si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1462 volatile struct si_channel *ccbp;
1465 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1466 ccbp = pp->sp_ccb; /* Find channel address */
1471 if (x & IP_DCD) bits |= TIOCM_CAR;
1472 if (x & IP_DTR) bits |= TIOCM_DTR;
1473 if (x & IP_RTS) bits |= TIOCM_RTS;
1474 if (x & IP_RI) bits |= TIOCM_RI;
1477 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1481 if (bits & TIOCM_DTR)
1483 if (bits & TIOCM_RTS)
1488 if (bits & TIOCM_DTR)
1489 ccbp->hi_op &= ~OP_DSR;
1490 if (bits & TIOCM_RTS)
1491 ccbp->hi_op &= ~OP_CTS;
1497 * Handle change of modem state
1500 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1502 /* if a modem dev */
1503 if (hi_ip & IP_DCD) {
1504 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1505 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1507 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1510 if (pp->sp_last_hi_ip & IP_DCD) {
1511 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1512 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1513 (void) si_modem(pp, SET, 0);
1516 pp->sp_last_hi_ip = hi_ip;
1521 * Poller to catch missed interrupts.
1523 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1524 * better response. We could really use a "periodic" version timeout(). :-)
1528 si_poll(void *nothing)
1530 struct si_softc *sc;
1532 volatile struct si_reg *regp;
1536 DPRINT((0, DBG_POLL, "si_poll()\n"));
1541 for (i = 0; i < si_numunits; i++) {
1542 sc = devclass_get_softc(si_devclass, i);
1543 if (sc == NULL || sc->sc_type == SIEMPTY)
1545 regp = (struct si_reg *)sc->sc_maddr;
1548 * See if there has been a pending interrupt for 2 seconds
1549 * or so. The test (int_scounter >= 200) won't correspond
1550 * to 2 seconds if int_count gets changed.
1552 if (regp->int_pending != 0) {
1553 if (regp->int_scounter >= 200 &&
1554 regp->initstat == 1) {
1555 printf("si%d: lost intr\n", i);
1559 regp->int_scounter = 0;
1563 * gripe about no input flow control..
1566 for (port = 0; port < sc->sc_nport; pp++, port++) {
1567 if (pp->sp_delta_overflows > 0) {
1568 printf("si%d: %d tty level buffer overflows\n",
1569 i, pp->sp_delta_overflows);
1570 pp->sp_delta_overflows = 0;
1574 if (lost || si_realpoll)
1575 si_intr(NULL); /* call intr with fake vector */
1579 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
1581 #endif /* ifdef POLL */
1584 * The interrupt handler polls ALL ports on ALL adapters each time
1588 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1589 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1594 struct si_softc *sc;
1596 volatile struct si_channel *ccbp;
1598 volatile caddr_t maddr;
1600 int x, card, port, n, i, isopen;
1606 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1612 * When we get an int we poll all the channels and do ALL pending
1613 * work, not just the first one we find. This allows all cards to
1614 * share the same vector.
1616 * XXX - But if we're sharing the vector with something that's NOT
1617 * a SI/XIO/SX card, we may be making more work for ourselves.
1619 for (card = 0; card < si_numunits; card++) {
1620 sc = devclass_get_softc(si_devclass, card);
1621 if (sc == NULL || sc->sc_type == SIEMPTY)
1625 * First, clear the interrupt
1627 switch(sc->sc_type) {
1629 maddr = sc->sc_maddr;
1630 ((volatile struct si_reg *)maddr)->int_pending = 0;
1631 /* flag nothing pending */
1632 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1633 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1636 maddr = sc->sc_maddr;
1637 ((volatile struct si_reg *)maddr)->int_pending = 0;
1638 *(maddr+SIPLIRQCLR) = 0x00;
1639 *(maddr+SIPLIRQCLR) = 0x10;
1642 maddr = sc->sc_maddr;
1643 ((volatile struct si_reg *)maddr)->int_pending = 0;
1644 *(maddr+SIPCIINTCL) = 0x0;
1646 case SIJETPCI: /* fall through to JETISA case */
1648 maddr = sc->sc_maddr;
1649 ((volatile struct si_reg *)maddr)->int_pending = 0;
1650 *(maddr+SIJETINTCL) = 0x0;
1653 maddr = sc->sc_maddr;
1654 ((volatile struct si_reg *)maddr)->int_pending = 0;
1655 (void)inb(sc->sc_iobase + 3);
1661 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1666 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1672 * See if a command has completed ?
1674 if (ccbp->hi_stat != pp->sp_pend) {
1675 DPRINT((pp, DBG_INTR,
1676 "si_intr hi_stat = 0x%x, pend = %d\n",
1677 ccbp->hi_stat, pp->sp_pend));
1678 switch(pp->sp_pend) {
1685 pp->sp_pend = ccbp->hi_stat;
1686 /* sleeping in si_command */
1687 wakeup(&pp->sp_state);
1690 pp->sp_pend = ccbp->hi_stat;
1695 * Continue on if it's closed
1697 if (ccbp->hi_stat == IDLE_CLOSE) {
1702 * Do modem state change if not a local device
1704 si_modem_state(pp, tp, ccbp->hi_ip);
1707 * Check to see if we should 'receive' characters.
1709 if (tp->t_state & TS_CONNECTED &&
1710 tp->t_state & TS_ISOPEN)
1716 * Do input break processing
1718 if (ccbp->hi_state & ST_BREAK) {
1720 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1722 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1723 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1727 * Do RX stuff - if not open then dump any characters.
1728 * XXX: This is VERY messy and needs to be cleaned up.
1730 * XXX: can we leave data in the host adapter buffer
1731 * when the clists are full? That may be dangerous
1732 * if the user cannot get an interrupt signal through.
1735 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1738 ccbp->hi_rxopos = ccbp->hi_rxipos;
1743 * If the tty input buffers are blocked, stop emptying
1744 * the incoming buffers and let the auto flow control
1747 if (tp->t_state & TS_TBLOCK) {
1752 * Process read characters if not skipped above
1754 op = ccbp->hi_rxopos;
1755 ip = ccbp->hi_rxipos;
1765 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1769 * Suck characters out of host card buffer into the
1770 * "input staging buffer" - so that we dont leave the
1771 * host card in limbo while we're possibly echoing
1772 * characters and possibly flushing input inside the
1773 * ldisc l_rint() routine.
1775 if (n <= SI_BUFFERSIZE - op) {
1777 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1778 z = ccbp->hi_rxbuf + op;
1779 si_vbcopy(z, si_rxbuf, n);
1783 x = SI_BUFFERSIZE - op;
1785 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1786 z = ccbp->hi_rxbuf + op;
1787 si_vbcopy(z, si_rxbuf, x);
1789 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1792 si_vbcopy(z, si_rxbuf + x, n - x);
1797 /* clear collected characters from buffer */
1798 ccbp->hi_rxopos = op;
1800 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1805 * n = number of chars placed in si_rxbuf
1809 * Avoid the grotesquely inefficient lineswitch
1810 * routine (ttyinput) in "raw" mode. It usually
1811 * takes about 450 instructions (that's without
1812 * canonical processing or echo!). slinput is
1813 * reasonably fast (usually 40 instructions
1814 * plus call overhead).
1816 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1818 /* block if the driver supports it */
1819 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1820 (tp->t_cflag & CRTS_IFLOW ||
1821 tp->t_iflag & IXOFF) &&
1822 !(tp->t_state & TS_TBLOCK))
1829 pp->sp_delta_overflows +=
1830 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1833 if (tp->t_state & TS_TTSTOP &&
1834 (tp->t_iflag & IXANY ||
1835 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1836 tp->t_state &= ~TS_TTSTOP;
1837 tp->t_lflag &= ~FLUSHO;
1842 * It'd be nice to not have to go through the
1843 * function call overhead for each char here.
1844 * It'd be nice to block input it, saving a
1845 * loop here and the call/return overhead.
1847 for(x = 0; x < n; x++) {
1849 if ((*linesw[tp->t_line].l_rint)(i, tp)
1851 pp->sp_delta_overflows++;
1854 * doesn't seem to be much point doing
1855 * this here.. this driver has no
1856 * softtty processing! ??
1858 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1863 goto more_rx; /* try for more until RXbuf is empty */
1865 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1870 (*linesw[tp->t_line].l_start)(tp);
1872 } /* end of for (all ports on this controller) */
1873 } /* end of for (all controllers) */
1876 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1880 * Nudge the transmitter...
1882 * XXX: I inherited some funny code here. It implies the host card only
1883 * interrupts when the transmit buffer reaches the low-water-mark, and does
1884 * not interrupt when it's actually hits empty. In some cases, we have
1885 * processes waiting for complete drain, and we need to simulate an interrupt
1886 * about when we think the buffer is going to be empty (and retry if not).
1887 * I really am not certain about this... I *need* the hardware manuals.
1890 si_start(struct tty *tp)
1893 volatile struct si_channel *ccbp;
1897 int count, n, amount, buffer_full;
1904 DPRINT((pp, DBG_ENTRY|DBG_START,
1905 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1906 tp, tp->t_state, pp->sp_state, qp->c_cc));
1908 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1914 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1915 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1917 while ((nchar = qp->c_cc) > 0) {
1918 if ((BYTE)count >= 255) {
1922 amount = min(nchar, (255 - (BYTE)count));
1923 ipos = (unsigned int)ccbp->hi_txipos;
1924 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1925 /* will it fit in one lump? */
1926 if ((SI_BUFFERSIZE - ipos) >= n) {
1927 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1929 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1930 SI_BUFFERSIZE - ipos);
1931 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1932 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1934 ccbp->hi_txipos += n;
1935 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1938 if (count != 0 && nchar == 0) {
1939 tp->t_state |= TS_BUSY;
1941 tp->t_state &= ~TS_BUSY;
1947 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1948 (BYTE)count, nchar, tp->t_state));
1950 if (tp->t_state & TS_BUSY)
1954 time = ttspeedtab(tp->t_ospeed, chartimes);
1958 time = nchar / time;
1962 DPRINT((pp, DBG_START,
1963 "bad char time value! %d\n", time));
1967 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1968 callout_stop(&pp->lstart_ch);
1970 pp->sp_state |= SS_LSTART;
1972 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1973 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
1978 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1982 * Note: called at splsoftclock from the timeout code
1983 * This has to deal with two things... cause wakeups while waiting for
1984 * tty drains on last process exit, and call l_start at about the right
1985 * time for protocols like ppp.
1988 si_lstart(void *arg)
1990 struct si_port *pp = arg;
1993 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1998 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
2002 pp->sp_state &= ~SS_LSTART;
2003 pp->sp_state |= SS_INLSTART;
2007 /* deal with the process exit case */
2010 /* nudge protocols - eg: ppp */
2011 (*linesw[tp->t_line].l_start)(tp);
2013 pp->sp_state &= ~SS_INLSTART;
2018 * Stop output on a line. called at spltty();
2021 si_stop(struct tty *tp, int rw)
2023 volatile struct si_channel *ccbp;
2029 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2031 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2033 /* what level are we meant to be flushing anyway? */
2034 if (tp->t_state & TS_BUSY) {
2035 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2036 tp->t_state &= ~TS_BUSY;
2037 ttwwakeup(tp); /* Bruce???? */
2040 #if 1 /* XXX: this doesn't work right yet.. */
2041 /* XXX: this may have been failing because we used to call l_rint()
2042 * while we were looping based on these two counters. Now, we collect
2043 * the data and then loop stuffing it into l_rint(), making this
2044 * useless. Should we cause this to blow away the staging buffer?
2047 ccbp->hi_rxopos = ccbp->hi_rxipos;
2053 * Issue a command to the host card CPU.
2057 si_command(struct si_port *pp, int cmd, int waitflag)
2059 volatile struct si_channel *ccbp = pp->sp_ccb;
2062 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2063 pp, cmd, waitflag, ccbp->hi_stat));
2065 crit_enter(); /* Keep others out */
2067 /* wait until it's finished what it was doing.. */
2068 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2070 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2074 if (in_intr) { /* Prevent sleep in intr */
2075 DPRINT((pp, DBG_PARAM,
2076 "cmd intr collision - completing %d\trequested %d\n",
2080 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2086 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2088 /* if there was a pending command, cause a state-change wakeup */
2089 switch(pp->sp_pend) {
2096 wakeup(&pp->sp_state);
2102 pp->sp_pend = cmd; /* New command pending */
2103 ccbp->hi_stat = cmd; /* Post it */
2106 if (in_intr) { /* If in interrupt handler */
2107 DPRINT((pp, DBG_PARAM,
2108 "attempt to sleep in si_intr - cmd req %d\n",
2112 } else while(ccbp->hi_stat != IDLE_OPEN &&
2113 ccbp->hi_stat != IDLE_BREAK) {
2114 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2123 si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2126 * XXX can skip a lot more cases if Smarts. Maybe
2127 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2128 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2130 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2131 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2132 (!(t->c_iflag & PARMRK) ||
2133 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2134 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2135 linesw[tp->t_line].l_rint == ttyinput)
2136 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2138 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2139 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2140 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2141 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2149 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2153 if ((pp == NULL && (si_debug&flags)) ||
2154 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2156 printf("%ci%d(%d): ", 's',
2157 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2158 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2159 __va_start(ap, fmt);
2166 si_mctl2str(enum si_mctl cmd)
2184 si_modulename(int host_type, int uart_type)
2186 switch (host_type) {
2187 /* Z280 based cards */
2192 switch (uart_type) {
2199 /* T225 based hosts */
2202 switch (uart_type) {