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 1.19 2006/09/05 03:48:11 dillon 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 ucred *);
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 dev_ops si_ops = {
124 { "si", CDEV_MAJOR, D_TTY | D_KQFILTER },
131 .d_kqfilter = ttykqfilter
134 static int si_Nports;
135 static int si_Nmodules;
136 static int si_debug = 0; /* data, not bss, so it's patchable */
138 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
140 static struct tty *si__tty;
142 static int si_numunits;
143 static struct callout poll_ch;
145 devclass_t si_devclass;
147 #ifndef B2000 /* not standard, but the hardware knows it. */
150 static struct speedtab bdrates[] = {
151 { B75, CLK75, }, /* 0x0 */
152 { B110, CLK110, }, /* 0x1 */
153 { B150, CLK150, }, /* 0x3 */
154 { B300, CLK300, }, /* 0x4 */
155 { B600, CLK600, }, /* 0x5 */
156 { B1200, CLK1200, }, /* 0x6 */
157 { B2000, CLK2000, }, /* 0x7 */
158 { B2400, CLK2400, }, /* 0x8 */
159 { B4800, CLK4800, }, /* 0x9 */
160 { B9600, CLK9600, }, /* 0xb */
161 { B19200, CLK19200, }, /* 0xc */
162 { B38400, CLK38400, }, /* 0x2 (out of order!) */
163 { B57600, CLK57600, }, /* 0xd */
164 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
169 /* populated with approx character/sec rates - translated at card
170 * initialisation time to chars per tick of the clock */
171 static int done_chartimes = 0;
172 static struct speedtab chartimes[] = {
189 static volatile int in_intr = 0; /* Inside interrupt handler? */
192 static int si_pollrate; /* in addition to irq */
193 static int si_realpoll = 0; /* poll HW on timer */
195 SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
196 SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
198 static int init_finished = 0;
199 static void si_poll(void *);
203 * Array of adapter types and the corresponding RAM size. The order of
204 * entries here MUST match the ordinal of the adapter type.
206 static char *si_type[] = {
209 "SIMCA", /* FreeBSD does not support Microchannel */
218 * We have to make an 8 bit version of bcopy, since some cards can't
219 * deal with 32 bit I/O
222 si_bcopy(const void *src, void *dst, size_t len)
224 const uint8_t *src_byte = (const uint8_t *)src;
225 uint8_t *dst_byte = (uint8_t *)dst;
228 *dst_byte++ = *src_byte++;
232 si_vbcopy(const volatile void *src, void *dst, size_t len)
234 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
235 uint8_t *dst_byte = (uint8_t *)dst;
238 *dst_byte++ = *src_byte++;
242 si_bcopyv(const void *src, volatile void *dst, size_t len)
244 const uint8_t *src_byte = (const uint8_t *)src;
245 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
248 *dst_byte++ = *src_byte++;
252 * Attach the device. Initialize the card.
255 siattach(device_t dev)
260 volatile struct si_channel *ccbp;
261 volatile struct si_reg *regp;
262 volatile caddr_t maddr;
263 struct si_module *modp;
265 struct speedtab *spt;
266 int nmodule, nport, x, y;
270 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
271 callout_init(&poll_ch);
273 sc = device_get_softc(dev);
274 unit = device_get_unit(dev);
276 sc->sc_typename = si_type[sc->sc_type];
277 if (si_numunits < unit + 1)
278 si_numunits = unit + 1;
280 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
283 if (si_pollrate == 0) {
284 si_pollrate = POLLHZ; /* in addition to irq */
286 si_realpoll = 1; /* scan always */
291 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
292 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
294 sc->sc_ports = NULL; /* mark as uninitialised */
296 maddr = sc->sc_maddr;
298 /* Stop the CPU first so it won't stomp around while we load */
300 switch (sc->sc_type) {
302 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
305 *(maddr+SIPCIRESET) = 0;
307 case SIJETPCI: /* fall through to JET ISA */
309 *(maddr+SIJETCONFIG) = 0;
312 *(maddr+SIPLRESET) = 0;
315 *(maddr+SIRESET) = 0;
317 default: /* this should never happen */
318 printf("si%d: unsupported configuration\n", unit);
323 /* OK, now lets download the download code */
325 if (SI_ISJET(sc->sc_type)) {
326 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
327 unit, si3_t225_dsize));
328 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
330 DPRINT((0, DBG_DOWNLOAD,
331 "si%d: jet_bootstrap: nbytes %d -> %x\n",
332 unit, si3_t225_bsize, si3_t225_bootloadaddr));
333 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
336 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
337 unit, si2_z280_dsize));
338 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
342 /* Now start the CPU */
344 switch (sc->sc_type) {
346 /* modify the download code to tell it that it's on an EISA */
348 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
349 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
352 /* modify the download code to tell it that it's on a PCI */
354 *(maddr+SIPCIRESET) = 1;
355 *(maddr+SIPCIINTCL) = 0;
358 *(maddr+SIJETRESET) = 0;
359 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
362 *(maddr+SIJETRESET) = 0;
363 switch (sc->sc_irq) {
365 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
368 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
371 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
374 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
377 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
382 *(maddr+SIRESET_CL) = 0;
383 *(maddr+SIINTCL_CL) = 0;
386 *(maddr+SIPLRESET) = 0x10;
387 switch (sc->sc_irq) {
389 *(maddr+SIPLIRQ11) = 0x10;
392 *(maddr+SIPLIRQ12) = 0x10;
395 *(maddr+SIPLIRQ15) = 0x10;
398 *(maddr+SIPLIRQCLR) = 0x10;
400 default: /* this should _REALLY_ never happen */
401 printf("si%d: Uh, it was supported a second ago...\n", unit);
405 DELAY(1000000); /* wait around for a second */
407 regp = (struct si_reg *)maddr;
409 /* wait max of 5 sec for init OK */
410 while (regp->initstat == 0 && y++ < 10) {
413 switch (regp->initstat) {
415 printf("si%d: startup timeout - aborting\n", unit);
416 sc->sc_type = SIEMPTY;
419 if (SI_ISJET(sc->sc_type)) {
420 /* set throttle to 100 times per second */
421 regp->int_count = JET_INT_COUNT;
422 /* rx_intr_count is a NOP in Jet */
424 /* set throttle to 125 times per second */
425 regp->int_count = INT_COUNT;
426 /* rx intr max of 25 times per second */
427 regp->rx_int_count = RXINT_COUNT;
429 regp->int_pending = 0; /* no intr pending */
430 regp->int_scounter = 0; /* reset counter */
434 * No modules found, so give up on this one.
436 printf("si%d: %s - no ports found\n", unit,
437 si_type[sc->sc_type]);
440 printf("si%d: download code version error - initstat %x\n",
441 unit, regp->initstat);
446 * First time around the ports just count them in order
447 * to allocate some memory.
450 modp = (struct si_module *)(maddr + 0x80);
452 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
453 switch (modp->sm_type) {
455 DPRINT((0, DBG_DOWNLOAD,
456 "si%d: Found old TA4 module, 4 ports\n",
461 DPRINT((0, DBG_DOWNLOAD,
462 "si%d: Found old TA8 module, 8 ports\n",
467 DPRINT((0, DBG_DOWNLOAD,
468 "si%d: Found ASIC TA4 module, 4 ports\n",
473 DPRINT((0, DBG_DOWNLOAD,
474 "si%d: Found ASIC TA8 module, 8 ports\n",
479 DPRINT((0, DBG_DOWNLOAD,
480 "si%d: Found CD1400 module, 8 ports\n",
485 DPRINT((0, DBG_DOWNLOAD,
486 "si%d: Found SXDC module, 8 ports\n",
491 printf("si%d: unknown module type %d\n",
492 unit, modp->sm_type);
496 /* this was limited in firmware and is also a driver issue */
497 if ((nport + x) > SI_MAXPORTPERCARD) {
498 printf("si%d: extra ports ignored\n", unit);
507 if (modp->sm_next == 0)
509 modp = (struct si_module *)
510 (maddr + (unsigned)(modp->sm_next & 0x7fff));
512 sc->sc_ports = kmalloc(sizeof(struct si_port) * nport,
513 M_DEVBUF, M_WAITOK | M_ZERO);
514 sc->sc_nport = nport;
515 for (n = 0; n < nport; ++n) {
516 callout_init(&sc->sc_ports[n].lstart_ch);
517 callout_init(&sc->sc_ports[n].dtr_ch);
521 * allocate tty structures for ports
523 tp = kmalloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
527 * Scan round the ports again, this time initialising.
531 modp = (struct si_module *)(maddr + 0x80);
532 uart_type = 1000; /* arbitary, > uchar_max */
534 switch (modp->sm_type) {
557 ccbp = (struct si_channel *)((char *)modp + 0x100);
558 if (uart_type == 1000)
559 uart_type = ccbp->type;
560 else if (uart_type != ccbp->type)
561 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
563 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
564 uart_type, si_modulename(sc->sc_type, uart_type));
566 for (x = 0; x < nport; x++, pp++, ccbp++) {
567 pp->sp_ccb = ccbp; /* save the address */
569 pp->sp_pend = IDLE_CLOSE;
570 pp->sp_state = 0; /* internal flag */
571 pp->sp_dtr_wait = 3 * hz;
572 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
573 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
574 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
575 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
576 termioschars(&pp->sp_iin);
577 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
579 pp->sp_iout = pp->sp_iin;
582 if (modp->sm_next == 0) {
583 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
589 si_modulename(sc->sc_type, uart_type));
592 modp = (struct si_module *)
593 (maddr + (unsigned)(modp->sm_next & 0x7fff));
595 if (done_chartimes == 0) {
596 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
597 if ((spt->sp_code /= hz) == 0)
603 dev_ops_add(&si_ops, 0x7f, unit);
604 /* path name devsw minor type uid gid perm*/
605 for (x = 0; x < sc->sc_nport; x++) {
606 /* sync with the manuals that start at 1 */
607 y = x + 1 + unit * (1 << SI_CARDSHIFT);
608 make_dev(&si_ops, x, 0, 0, 0600, "ttyA%02d", y);
609 make_dev(&si_ops, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
610 make_dev(&si_ops, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
611 make_dev(&si_ops, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
612 make_dev(&si_ops, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
613 make_dev(&si_ops, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
615 make_dev(&si_ops, 0x40000, 0, 0, 0600, "si_control");
620 siopen(struct dev_open_args *ap)
622 dev_t dev = ap->a_head.a_dev;
627 volatile struct si_channel *ccbp;
629 int mynor = minor(dev);
631 /* quickly let in /dev/si_control */
632 if (IS_CONTROLDEV(mynor)) {
633 if ((error = suser_cred(ap->a_cred, 0)))
638 card = SI_CARD(mynor);
639 sc = devclass_get_softc(si_devclass, card);
643 if (sc->sc_type == SIEMPTY) {
644 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
645 card, sc->sc_typename));
649 port = SI_PORT(mynor);
650 if (port >= sc->sc_nport) {
651 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
652 card, sc->sc_nport));
658 * We've now got a device, so start the poller.
660 if (init_finished == 0) {
661 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
666 /* initial/lock device */
667 if (IS_STATE(mynor)) {
671 pp = sc->sc_ports + port;
672 tp = pp->sp_tty; /* the "real" tty */
674 ccbp = pp->sp_ccb; /* Find control block */
675 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x)\n",
676 devtoname(dev), ap->a_oflags, ap->a_devtype));
678 crit_enter(); /* Keep others out */
682 while (pp->sp_state & SS_DTR_OFF) {
683 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
688 if (tp->t_state & TS_ISOPEN) {
690 * The device is open, so everything has been initialised.
693 if (IS_CALLOUT(mynor)) {
694 if (!pp->sp_active_out) {
699 if (pp->sp_active_out) {
700 if (ap->a_oflags & O_NONBLOCK) {
704 error = tsleep(&pp->sp_active_out,
711 if (tp->t_state & TS_XCLUDE &&
712 suser_cred(ap->a_cred, 0)) {
713 DPRINT((pp, DBG_OPEN|DBG_FAIL,
714 "already open and EXCLUSIVE set\n"));
720 * The device isn't open, so there are no conflicts.
721 * Initialize it. Avoid sleep... :-)
723 DPRINT((pp, DBG_OPEN, "first open\n"));
724 tp->t_oproc = si_start;
725 tp->t_stop = si_stop;
726 tp->t_param = siparam;
728 tp->t_termios = mynor & SI_CALLOUT_MASK
729 ? pp->sp_iout : pp->sp_iin;
731 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
733 ++pp->sp_wopeners; /* in case of sleep in siparam */
735 error = siparam(tp, &tp->t_termios);
740 /* XXX: we should goto_top if siparam slept */
742 /* set initial DCD state */
743 pp->sp_last_hi_ip = ccbp->hi_ip;
744 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
745 (*linesw[tp->t_line].l_modem)(tp, 1);
749 /* whoops! we beat the close! */
750 if (pp->sp_state & SS_CLOSING) {
751 /* try and stop it from proceeding to bash the hardware */
752 pp->sp_state &= ~SS_CLOSING;
756 * Wait for DCD if necessary
758 if (!(tp->t_state & TS_CARR_ON) &&
759 !IS_CALLOUT(mynor) &&
760 !(tp->t_cflag & CLOCAL) &&
761 !(ap->a_oflags & O_NONBLOCK)) {
763 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
764 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
771 error = (*linesw[tp->t_line].l_open)(dev, tp);
772 si_disc_optim(tp, &tp->t_termios, pp);
773 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
774 pp->sp_active_out = TRUE;
776 pp->sp_state |= SS_OPEN; /* made it! */
781 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
783 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
790 siclose(struct dev_close_args *ap)
792 dev_t dev = ap->a_head.a_dev;
796 int mynor = minor(dev);
798 if (IS_SPECIAL(mynor))
803 pp = MINOR2PP(mynor);
806 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x) sp_state:%x\n",
807 devtoname(dev), ap->a_fflag, ap->a_devtype, pp->sp_state));
809 /* did we sleep and loose a race? */
810 if (pp->sp_state & SS_CLOSING) {
811 /* error = ESOMETING? */
815 /* begin race detection.. */
816 pp->sp_state |= SS_CLOSING;
818 si_write_enable(pp, 0); /* block writes for ttywait() */
820 /* THIS MAY SLEEP IN TTYWAIT!!! */
821 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
823 si_write_enable(pp, 1);
825 /* did we sleep and somebody started another open? */
826 if (!(pp->sp_state & SS_CLOSING)) {
827 /* error = ESOMETING? */
830 /* ok. we are now still on the right track.. nuke the hardware */
832 if (pp->sp_state & SS_LSTART) {
833 callout_stop(&pp->lstart_ch);
834 pp->sp_state &= ~SS_LSTART;
837 si_stop(tp, FREAD | FWRITE);
841 pp->sp_state &= ~SS_OPEN;
844 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
850 sihardclose(struct si_port *pp)
853 volatile struct si_channel *ccbp;
858 ccbp = pp->sp_ccb; /* Find control block */
859 if (tp->t_cflag & HUPCL ||
860 (!pp->sp_active_out &&
861 !(ccbp->hi_ip & IP_DCD) &&
862 !(pp->sp_iin.c_cflag && CLOCAL)) ||
863 !(tp->t_state & TS_ISOPEN)) {
865 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
866 (void) si_command(pp, FCLOSE, SI_NOWAIT);
868 if (pp->sp_dtr_wait != 0) {
869 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
871 pp->sp_state |= SS_DTR_OFF;
875 pp->sp_active_out = FALSE;
876 wakeup((caddr_t)&pp->sp_active_out);
877 wakeup(TSA_CARR_ON(tp));
884 * called at splsoftclock()...
887 sidtrwakeup(void *chan)
893 pp = (struct si_port *)chan;
894 pp->sp_state &= ~SS_DTR_OFF;
895 wakeup(&pp->sp_dtr_wait);
901 siwrite(struct dev_write_args *ap)
903 dev_t dev = ap->a_head.a_dev;
907 int mynor = minor(dev);
909 if (IS_SPECIAL(mynor)) {
910 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
913 pp = MINOR2PP(mynor);
915 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), ap->a_uio, ap->a_ioflag));
919 * If writes are currently blocked, wait on the "real" tty
921 while (pp->sp_state & SS_BLOCKWRITE) {
922 pp->sp_state |= SS_WAITWRITE;
923 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
924 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
925 "siwrite", tp->t_timeout))) {
926 if (error == EWOULDBLOCK)
932 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
940 siioctl(struct dev_ioctl_args *ap)
942 dev_t dev = ap->a_head.a_dev;
943 caddr_t data = ap->a_data;
944 u_long cmd = ap->a_cmd;
948 int mynor = minor(dev);
950 #if defined(COMPAT_43)
955 if (IS_SI_IOCTL(cmd))
956 return(si_Sioctl(dev, cmd, data, ap->a_fflag, ap->a_cred));
958 pp = MINOR2PP(mynor);
961 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
962 devtoname(dev), cmd, data, ap->a_fflag));
963 if (IS_STATE(mynor)) {
966 switch (mynor & SI_STATE_MASK) {
967 case SI_INIT_STATE_MASK:
968 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
970 case SI_LOCK_STATE_MASK:
971 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
978 error = suser_cred(ap->a_cred, 0);
981 *ct = *(struct termios *)data;
984 *(struct termios *)data = *ct;
987 *(int *)data = TTYDISC;
990 bzero(data, sizeof(struct winsize));
997 * Do the old-style ioctl compat routines...
999 #if defined(COMPAT_43)
1000 term = tp->t_termios;
1002 error = ttsetcompat(tp, &cmd, data, &term);
1006 data = (caddr_t)&term;
1009 * Do the initial / lock state business
1011 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1013 struct termios *dt = (struct termios *)data;
1014 struct termios *lt = mynor & SI_CALLOUT_MASK
1015 ? &pp->sp_lout : &pp->sp_lin;
1017 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1018 (dt->c_iflag & ~lt->c_iflag);
1019 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1020 (dt->c_oflag & ~lt->c_oflag);
1021 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1022 (dt->c_cflag & ~lt->c_cflag);
1023 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1024 (dt->c_lflag & ~lt->c_lflag);
1025 for (cc = 0; cc < NCCS; ++cc)
1026 if (lt->c_cc[cc] != 0)
1027 dt->c_cc[cc] = tp->t_cc[cc];
1028 if (lt->c_ispeed != 0)
1029 dt->c_ispeed = tp->t_ispeed;
1030 if (lt->c_ospeed != 0)
1031 dt->c_ospeed = tp->t_ospeed;
1035 * Block user-level writes to give the ttywait()
1036 * a chance to completely drain for commands
1037 * that require the port to be in a quiescent state.
1046 blocked++; /* block writes for ttywait() and siparam() */
1047 si_write_enable(pp, 0);
1050 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1051 ap->a_fflag, ap->a_cred);
1052 if (error != ENOIOCTL)
1057 error = ttioctl(tp, cmd, data, ap->a_fflag);
1058 si_disc_optim(tp, &tp->t_termios, pp);
1059 if (error != ENOIOCTL) {
1067 si_command(pp, SBREAK, SI_WAIT);
1070 si_command(pp, EBREAK, SI_WAIT);
1073 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1076 (void) si_modem(pp, SET, 0);
1079 (void) si_modem(pp, SET, *(int *)data);
1082 (void) si_modem(pp, BIS, *(int *)data);
1085 (void) si_modem(pp, BIC, *(int *)data);
1088 *(int *)data = si_modem(pp, GET, 0);
1091 /* must be root since the wait applies to following logins */
1092 error = suser_cred(ap->a_cred, 0);
1094 pp->sp_dtr_wait = *(int *)data * hz / 100;
1097 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1105 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1107 si_write_enable(pp, 1);
1112 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1115 si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct ucred *cred)
1117 struct si_softc *xsc;
1118 struct si_port *xpp;
1119 volatile struct si_reg *regp;
1121 struct si_pstat *sps;
1124 int mynor = minor(dev);
1126 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1127 devtoname(dev), cmd, data, flag));
1130 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1131 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1132 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1135 if (!IS_CONTROLDEV(mynor)) {
1136 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1140 crit_enter(); /* better safe than sorry */
1144 #define SUCHECK if ((error = suser_cred(cred, 0))) goto out
1162 * Check that a controller for this port exists
1165 /* may also be a struct si_pstat, a superset of si_tcsi */
1167 dp = (struct si_tcsi *)data;
1168 sps = (struct si_pstat *)data;
1170 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1171 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1176 * And check that a port exists
1179 if (port < 0 || port >= xsc->sc_nport) {
1183 xpp = xsc->sc_ports + port;
1184 regp = (struct si_reg *)xsc->sc_maddr;
1194 xpp->sp_debug = DBG_ALL;
1195 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1196 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1203 case TCSISDBG_LEVEL:
1204 case TCSIGDBG_LEVEL:
1206 if (cmd == TCSIGDBG_LEVEL) {
1207 dp->tc_dbglvl = xpp->sp_debug;
1210 xpp->sp_debug = dp->tc_dbglvl;
1218 dp->tc_int = regp->rx_int_count;
1222 regp->rx_int_count = dp->tc_int;
1225 dp->tc_int = regp->int_count;
1229 regp->int_count = dp->tc_int;
1232 dp->tc_int = xpp->sp_ccb->hi_ip;
1234 /* these next three use a different structure */
1237 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1241 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1245 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1253 return(error); /* success */
1257 * siparam() : Configure line params
1258 * called at spltty();
1259 * this may sleep, does not flush, nor wait for drain, nor block writes
1260 * caller must arrange this if it's important..
1263 siparam(struct tty *tp, struct termios *t)
1265 struct si_port *pp = TP2PP(tp);
1266 volatile struct si_channel *ccbp;
1267 int cflag, iflag, oflag, lflag;
1268 int error = 0; /* shutup gcc */
1269 int ispeed = 0; /* shutup gcc */
1270 int ospeed = 0; /* shutup gcc */
1273 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1278 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1279 oflag, cflag, iflag, lflag));
1281 /* XXX - if Jet host and SXDC module, use extended baud rates */
1283 /* if not hung up.. */
1284 if (t->c_ospeed != 0) {
1285 /* translate baud rate to firmware values */
1286 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1287 ispeed = t->c_ispeed ?
1288 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1290 /* enforce legit baud rate */
1291 if (ospeed < 0 || ispeed < 0)
1299 /* ========== set hi_break ========== */
1301 if (iflag & IGNBRK) /* Breaks */
1303 if (iflag & BRKINT) /* Interrupt on break? */
1305 if (iflag & PARMRK) /* Parity mark? */
1307 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1309 ccbp->hi_break = val;
1311 /* ========== set hi_csr ========== */
1312 /* if not hung up.. */
1313 if (t->c_ospeed != 0) {
1314 /* Set I/O speeds */
1315 val = (ispeed << 4) | ospeed;
1319 /* ========== set hi_mr2 ========== */
1321 if (cflag & CSTOPB) /* Stop bits */
1326 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1327 * a DCE, hence the reverse sense of RTS and CTS
1329 /* Output Flow - RTS must be raised before data can be sent */
1330 if (cflag & CCTS_OFLOW)
1335 /* ========== set hi_mr1 ========== */
1337 if (!(cflag & PARENB)) /* Parity */
1344 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1346 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1348 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1350 } else { /* Must be 5 */
1354 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1355 * a DCE, hence the reverse sense of RTS and CTS
1357 /* Input Flow - CTS is raised when port is ready to receive data */
1358 if (cflag & CRTS_IFLOW)
1363 /* ========== set hi_mask ========== */
1365 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1367 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1369 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1371 } else { /* Must be 5 */
1377 ccbp->hi_mask = val;
1379 /* ========== set hi_prtcl ========== */
1380 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1390 ccbp->hi_prtcl = val;
1393 /* ========== set hi_{rx|tx}{on|off} ========== */
1394 /* XXX: the card TOTALLY shields us from the flow control... */
1395 ccbp->hi_txon = t->c_cc[VSTART];
1396 ccbp->hi_txoff = t->c_cc[VSTOP];
1398 ccbp->hi_rxon = t->c_cc[VSTART];
1399 ccbp->hi_rxoff = t->c_cc[VSTOP];
1401 /* ========== send settings to the card ========== */
1402 /* potential sleep here */
1403 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1404 si_command(pp, LOPEN, SI_WAIT); /* open it */
1406 si_command(pp, CONFIG, SI_WAIT); /* change params */
1408 /* ========== set DTR etc ========== */
1409 /* Hangup if ospeed == 0 */
1410 if (t->c_ospeed == 0) {
1411 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1414 * If the previous speed was 0, may need to re-enable
1417 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1420 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1421 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1428 * Enable or Disable the writes to this channel...
1429 * "state" -> enabled = 1; disabled = 0;
1432 si_write_enable(struct si_port *pp, int state)
1438 pp->sp_state &= ~SS_BLOCKWRITE;
1439 if (pp->sp_state & SS_WAITWRITE) {
1440 pp->sp_state &= ~SS_WAITWRITE;
1442 wakeup((caddr_t)pp);
1445 pp->sp_state |= SS_BLOCKWRITE;
1452 * Set/Get state of modem control lines.
1453 * Due to DCE-like behaviour of the adapter, some signals need translation:
1458 si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1460 volatile struct si_channel *ccbp;
1463 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1464 ccbp = pp->sp_ccb; /* Find channel address */
1469 if (x & IP_DCD) bits |= TIOCM_CAR;
1470 if (x & IP_DTR) bits |= TIOCM_DTR;
1471 if (x & IP_RTS) bits |= TIOCM_RTS;
1472 if (x & IP_RI) bits |= TIOCM_RI;
1475 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1479 if (bits & TIOCM_DTR)
1481 if (bits & TIOCM_RTS)
1486 if (bits & TIOCM_DTR)
1487 ccbp->hi_op &= ~OP_DSR;
1488 if (bits & TIOCM_RTS)
1489 ccbp->hi_op &= ~OP_CTS;
1495 * Handle change of modem state
1498 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1500 /* if a modem dev */
1501 if (hi_ip & IP_DCD) {
1502 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1503 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1505 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1508 if (pp->sp_last_hi_ip & IP_DCD) {
1509 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1510 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1511 (void) si_modem(pp, SET, 0);
1514 pp->sp_last_hi_ip = hi_ip;
1519 * Poller to catch missed interrupts.
1521 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1522 * better response. We could really use a "periodic" version timeout(). :-)
1526 si_poll(void *nothing)
1528 struct si_softc *sc;
1530 volatile struct si_reg *regp;
1534 DPRINT((0, DBG_POLL, "si_poll()\n"));
1539 for (i = 0; i < si_numunits; i++) {
1540 sc = devclass_get_softc(si_devclass, i);
1541 if (sc == NULL || sc->sc_type == SIEMPTY)
1543 regp = (struct si_reg *)sc->sc_maddr;
1546 * See if there has been a pending interrupt for 2 seconds
1547 * or so. The test (int_scounter >= 200) won't correspond
1548 * to 2 seconds if int_count gets changed.
1550 if (regp->int_pending != 0) {
1551 if (regp->int_scounter >= 200 &&
1552 regp->initstat == 1) {
1553 printf("si%d: lost intr\n", i);
1557 regp->int_scounter = 0;
1561 * gripe about no input flow control..
1564 for (port = 0; port < sc->sc_nport; pp++, port++) {
1565 if (pp->sp_delta_overflows > 0) {
1566 printf("si%d: %d tty level buffer overflows\n",
1567 i, pp->sp_delta_overflows);
1568 pp->sp_delta_overflows = 0;
1572 if (lost || si_realpoll)
1573 si_intr(NULL); /* call intr with fake vector */
1577 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
1579 #endif /* ifdef POLL */
1582 * The interrupt handler polls ALL ports on ALL adapters each time
1586 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1587 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1592 struct si_softc *sc;
1594 volatile struct si_channel *ccbp;
1596 volatile caddr_t maddr;
1598 int x, card, port, n, i, isopen;
1604 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1610 * When we get an int we poll all the channels and do ALL pending
1611 * work, not just the first one we find. This allows all cards to
1612 * share the same vector.
1614 * XXX - But if we're sharing the vector with something that's NOT
1615 * a SI/XIO/SX card, we may be making more work for ourselves.
1617 for (card = 0; card < si_numunits; card++) {
1618 sc = devclass_get_softc(si_devclass, card);
1619 if (sc == NULL || sc->sc_type == SIEMPTY)
1623 * First, clear the interrupt
1625 switch(sc->sc_type) {
1627 maddr = sc->sc_maddr;
1628 ((volatile struct si_reg *)maddr)->int_pending = 0;
1629 /* flag nothing pending */
1630 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1631 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1634 maddr = sc->sc_maddr;
1635 ((volatile struct si_reg *)maddr)->int_pending = 0;
1636 *(maddr+SIPLIRQCLR) = 0x00;
1637 *(maddr+SIPLIRQCLR) = 0x10;
1640 maddr = sc->sc_maddr;
1641 ((volatile struct si_reg *)maddr)->int_pending = 0;
1642 *(maddr+SIPCIINTCL) = 0x0;
1644 case SIJETPCI: /* fall through to JETISA case */
1646 maddr = sc->sc_maddr;
1647 ((volatile struct si_reg *)maddr)->int_pending = 0;
1648 *(maddr+SIJETINTCL) = 0x0;
1651 maddr = sc->sc_maddr;
1652 ((volatile struct si_reg *)maddr)->int_pending = 0;
1653 (void)inb(sc->sc_iobase + 3);
1659 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1664 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1670 * See if a command has completed ?
1672 if (ccbp->hi_stat != pp->sp_pend) {
1673 DPRINT((pp, DBG_INTR,
1674 "si_intr hi_stat = 0x%x, pend = %d\n",
1675 ccbp->hi_stat, pp->sp_pend));
1676 switch(pp->sp_pend) {
1683 pp->sp_pend = ccbp->hi_stat;
1684 /* sleeping in si_command */
1685 wakeup(&pp->sp_state);
1688 pp->sp_pend = ccbp->hi_stat;
1693 * Continue on if it's closed
1695 if (ccbp->hi_stat == IDLE_CLOSE) {
1700 * Do modem state change if not a local device
1702 si_modem_state(pp, tp, ccbp->hi_ip);
1705 * Check to see if we should 'receive' characters.
1707 if (tp->t_state & TS_CONNECTED &&
1708 tp->t_state & TS_ISOPEN)
1714 * Do input break processing
1716 if (ccbp->hi_state & ST_BREAK) {
1718 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1720 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1721 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1725 * Do RX stuff - if not open then dump any characters.
1726 * XXX: This is VERY messy and needs to be cleaned up.
1728 * XXX: can we leave data in the host adapter buffer
1729 * when the clists are full? That may be dangerous
1730 * if the user cannot get an interrupt signal through.
1733 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1736 ccbp->hi_rxopos = ccbp->hi_rxipos;
1741 * If the tty input buffers are blocked, stop emptying
1742 * the incoming buffers and let the auto flow control
1745 if (tp->t_state & TS_TBLOCK) {
1750 * Process read characters if not skipped above
1752 op = ccbp->hi_rxopos;
1753 ip = ccbp->hi_rxipos;
1763 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1767 * Suck characters out of host card buffer into the
1768 * "input staging buffer" - so that we dont leave the
1769 * host card in limbo while we're possibly echoing
1770 * characters and possibly flushing input inside the
1771 * ldisc l_rint() routine.
1773 if (n <= SI_BUFFERSIZE - op) {
1775 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1776 z = ccbp->hi_rxbuf + op;
1777 si_vbcopy(z, si_rxbuf, n);
1781 x = SI_BUFFERSIZE - op;
1783 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1784 z = ccbp->hi_rxbuf + op;
1785 si_vbcopy(z, si_rxbuf, x);
1787 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1790 si_vbcopy(z, si_rxbuf + x, n - x);
1795 /* clear collected characters from buffer */
1796 ccbp->hi_rxopos = op;
1798 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1803 * n = number of chars placed in si_rxbuf
1807 * Avoid the grotesquely inefficient lineswitch
1808 * routine (ttyinput) in "raw" mode. It usually
1809 * takes about 450 instructions (that's without
1810 * canonical processing or echo!). slinput is
1811 * reasonably fast (usually 40 instructions
1812 * plus call overhead).
1814 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1816 /* block if the driver supports it */
1817 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1818 (tp->t_cflag & CRTS_IFLOW ||
1819 tp->t_iflag & IXOFF) &&
1820 !(tp->t_state & TS_TBLOCK))
1827 pp->sp_delta_overflows +=
1828 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1831 if (tp->t_state & TS_TTSTOP &&
1832 (tp->t_iflag & IXANY ||
1833 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1834 tp->t_state &= ~TS_TTSTOP;
1835 tp->t_lflag &= ~FLUSHO;
1840 * It'd be nice to not have to go through the
1841 * function call overhead for each char here.
1842 * It'd be nice to block input it, saving a
1843 * loop here and the call/return overhead.
1845 for(x = 0; x < n; x++) {
1847 if ((*linesw[tp->t_line].l_rint)(i, tp)
1849 pp->sp_delta_overflows++;
1852 * doesn't seem to be much point doing
1853 * this here.. this driver has no
1854 * softtty processing! ??
1856 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1861 goto more_rx; /* try for more until RXbuf is empty */
1863 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1868 (*linesw[tp->t_line].l_start)(tp);
1870 } /* end of for (all ports on this controller) */
1871 } /* end of for (all controllers) */
1874 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1878 * Nudge the transmitter...
1880 * XXX: I inherited some funny code here. It implies the host card only
1881 * interrupts when the transmit buffer reaches the low-water-mark, and does
1882 * not interrupt when it's actually hits empty. In some cases, we have
1883 * processes waiting for complete drain, and we need to simulate an interrupt
1884 * about when we think the buffer is going to be empty (and retry if not).
1885 * I really am not certain about this... I *need* the hardware manuals.
1888 si_start(struct tty *tp)
1891 volatile struct si_channel *ccbp;
1895 int count, n, amount, buffer_full;
1902 DPRINT((pp, DBG_ENTRY|DBG_START,
1903 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1904 tp, tp->t_state, pp->sp_state, qp->c_cc));
1906 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1912 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1913 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1915 while ((nchar = qp->c_cc) > 0) {
1916 if ((BYTE)count >= 255) {
1920 amount = min(nchar, (255 - (BYTE)count));
1921 ipos = (unsigned int)ccbp->hi_txipos;
1922 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1923 /* will it fit in one lump? */
1924 if ((SI_BUFFERSIZE - ipos) >= n) {
1925 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1927 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1928 SI_BUFFERSIZE - ipos);
1929 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1930 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1932 ccbp->hi_txipos += n;
1933 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1936 if (count != 0 && nchar == 0) {
1937 tp->t_state |= TS_BUSY;
1939 tp->t_state &= ~TS_BUSY;
1945 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1946 (BYTE)count, nchar, tp->t_state));
1948 if (tp->t_state & TS_BUSY)
1952 time = ttspeedtab(tp->t_ospeed, chartimes);
1956 time = nchar / time;
1960 DPRINT((pp, DBG_START,
1961 "bad char time value! %d\n", time));
1965 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1966 callout_stop(&pp->lstart_ch);
1968 pp->sp_state |= SS_LSTART;
1970 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1971 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
1976 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1980 * Note: called at splsoftclock from the timeout code
1981 * This has to deal with two things... cause wakeups while waiting for
1982 * tty drains on last process exit, and call l_start at about the right
1983 * time for protocols like ppp.
1986 si_lstart(void *arg)
1988 struct si_port *pp = arg;
1991 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1996 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
2000 pp->sp_state &= ~SS_LSTART;
2001 pp->sp_state |= SS_INLSTART;
2005 /* deal with the process exit case */
2008 /* nudge protocols - eg: ppp */
2009 (*linesw[tp->t_line].l_start)(tp);
2011 pp->sp_state &= ~SS_INLSTART;
2016 * Stop output on a line. called at spltty();
2019 si_stop(struct tty *tp, int rw)
2021 volatile struct si_channel *ccbp;
2027 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2029 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2031 /* what level are we meant to be flushing anyway? */
2032 if (tp->t_state & TS_BUSY) {
2033 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2034 tp->t_state &= ~TS_BUSY;
2035 ttwwakeup(tp); /* Bruce???? */
2038 #if 1 /* XXX: this doesn't work right yet.. */
2039 /* XXX: this may have been failing because we used to call l_rint()
2040 * while we were looping based on these two counters. Now, we collect
2041 * the data and then loop stuffing it into l_rint(), making this
2042 * useless. Should we cause this to blow away the staging buffer?
2045 ccbp->hi_rxopos = ccbp->hi_rxipos;
2051 * Issue a command to the host card CPU.
2055 si_command(struct si_port *pp, int cmd, int waitflag)
2057 volatile struct si_channel *ccbp = pp->sp_ccb;
2060 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2061 pp, cmd, waitflag, ccbp->hi_stat));
2063 crit_enter(); /* Keep others out */
2065 /* wait until it's finished what it was doing.. */
2066 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2068 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2072 if (in_intr) { /* Prevent sleep in intr */
2073 DPRINT((pp, DBG_PARAM,
2074 "cmd intr collision - completing %d\trequested %d\n",
2078 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2084 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2086 /* if there was a pending command, cause a state-change wakeup */
2087 switch(pp->sp_pend) {
2094 wakeup(&pp->sp_state);
2100 pp->sp_pend = cmd; /* New command pending */
2101 ccbp->hi_stat = cmd; /* Post it */
2104 if (in_intr) { /* If in interrupt handler */
2105 DPRINT((pp, DBG_PARAM,
2106 "attempt to sleep in si_intr - cmd req %d\n",
2110 } else while(ccbp->hi_stat != IDLE_OPEN &&
2111 ccbp->hi_stat != IDLE_BREAK) {
2112 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2121 si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2124 * XXX can skip a lot more cases if Smarts. Maybe
2125 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2126 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2128 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2129 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2130 (!(t->c_iflag & PARMRK) ||
2131 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2132 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2133 linesw[tp->t_line].l_rint == ttyinput)
2134 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2136 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2137 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2138 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2139 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2147 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2151 if ((pp == NULL && (si_debug&flags)) ||
2152 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2154 printf("%ci%d(%d): ", 's',
2155 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2156 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2157 __va_start(ap, fmt);
2164 si_mctl2str(enum si_mctl cmd)
2182 si_modulename(int host_type, int uart_type)
2184 switch (host_type) {
2185 /* Z280 based cards */
2190 switch (uart_type) {
2197 /* T225 based hosts */
2200 switch (uart_type) {