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 1.23 2006/12/22 23:26:24 swildner 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>
55 #include <sys/fcntl.h>
56 #include <sys/dkstat.h>
57 #include <sys/kernel.h>
58 #include <sys/malloc.h>
59 #include <sys/sysctl.h>
62 #include <sys/thread2.h>
64 #include <machine/clock.h>
69 #include <machine/stdarg.h>
76 * This device driver is designed to interface the Specialix International
77 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA,
78 * EISA or PCI bus machine.
80 * The controller is interfaced to the host via dual port RAM
83 * The code for the Host 1 (very old ISA cards) has not been tested.
86 #define POLL /* turn on poller to scan for lost interrupts */
87 #define REALPOLL /* on each poll, scan for work regardless */
88 #define POLLHZ (hz/10) /* 10 times per second */
89 #define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE)
90 #define INT_COUNT 25000 /* max of 125 ints per second */
91 #define JET_INT_COUNT 100 /* max of 100 ints per second */
92 #define RXINT_COUNT 1 /* one rxint per 10 milliseconds */
94 enum si_mctl { GET, SET, BIS, BIC };
96 static void si_command(struct si_port *, int, int);
97 static int si_modem(struct si_port *, enum si_mctl, int);
98 static void si_write_enable(struct si_port *, int);
99 static int si_Sioctl(cdev_t, u_long, caddr_t, int, struct ucred *);
100 static void si_start(struct tty *);
101 static void si_stop(struct tty *, int);
102 static timeout_t si_lstart;
103 static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
104 static void sihardclose(struct si_port *pp);
105 static void sidtrwakeup(void *chan);
108 static char *si_mctl2str(enum si_mctl cmd);
111 static int siparam(struct tty *, struct termios *);
113 static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
114 static char * si_modulename(int host_type, int uart_type);
116 static d_open_t siopen;
117 static d_close_t siclose;
118 static d_write_t siwrite;
119 static d_ioctl_t siioctl;
121 #define CDEV_MAJOR 68
122 static struct dev_ops si_ops = {
123 { "si", CDEV_MAJOR, D_TTY | D_KQFILTER },
129 .d_kqfilter = ttykqfilter,
130 .d_revoke = ttyrevoke
133 static int si_Nports;
134 static int si_Nmodules;
135 static int si_debug = 0; /* data, not bss, so it's patchable */
137 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
139 static struct tty *si__tty;
141 static int si_numunits;
142 static struct callout poll_ch;
144 devclass_t si_devclass;
146 #ifndef B2000 /* not standard, but the hardware knows it. */
149 static struct speedtab bdrates[] = {
150 { B75, CLK75, }, /* 0x0 */
151 { B110, CLK110, }, /* 0x1 */
152 { B150, CLK150, }, /* 0x3 */
153 { B300, CLK300, }, /* 0x4 */
154 { B600, CLK600, }, /* 0x5 */
155 { B1200, CLK1200, }, /* 0x6 */
156 { B2000, CLK2000, }, /* 0x7 */
157 { B2400, CLK2400, }, /* 0x8 */
158 { B4800, CLK4800, }, /* 0x9 */
159 { B9600, CLK9600, }, /* 0xb */
160 { B19200, CLK19200, }, /* 0xc */
161 { B38400, CLK38400, }, /* 0x2 (out of order!) */
162 { B57600, CLK57600, }, /* 0xd */
163 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */
168 /* populated with approx character/sec rates - translated at card
169 * initialisation time to chars per tick of the clock */
170 static int done_chartimes = 0;
171 static struct speedtab chartimes[] = {
188 static volatile int in_intr = 0; /* Inside interrupt handler? */
191 static int si_pollrate; /* in addition to irq */
192 static int si_realpoll = 0; /* poll HW on timer */
194 SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
195 SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
197 static int init_finished = 0;
198 static void si_poll(void *);
202 * Array of adapter types and the corresponding RAM size. The order of
203 * entries here MUST match the ordinal of the adapter type.
205 static char *si_type[] = {
208 "SIMCA", /* FreeBSD does not support Microchannel */
217 * We have to make an 8 bit version of bcopy, since some cards can't
218 * deal with 32 bit I/O
221 si_bcopy(const void *src, void *dst, size_t len)
223 const uint8_t *src_byte = (const uint8_t *)src;
224 uint8_t *dst_byte = (uint8_t *)dst;
227 *dst_byte++ = *src_byte++;
231 si_vbcopy(const volatile void *src, void *dst, size_t len)
233 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
234 uint8_t *dst_byte = (uint8_t *)dst;
237 *dst_byte++ = *src_byte++;
241 si_bcopyv(const void *src, volatile void *dst, size_t len)
243 const uint8_t *src_byte = (const uint8_t *)src;
244 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
247 *dst_byte++ = *src_byte++;
251 * Attach the device. Initialize the card.
254 siattach(device_t dev)
259 volatile struct si_channel *ccbp;
260 volatile struct si_reg *regp;
261 volatile caddr_t maddr;
262 struct si_module *modp;
264 struct speedtab *spt;
265 int nmodule, nport, x, y;
269 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
270 callout_init(&poll_ch);
272 sc = device_get_softc(dev);
273 unit = device_get_unit(dev);
275 sc->sc_typename = si_type[sc->sc_type];
276 if (si_numunits < unit + 1)
277 si_numunits = unit + 1;
279 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
282 if (si_pollrate == 0) {
283 si_pollrate = POLLHZ; /* in addition to irq */
285 si_realpoll = 1; /* scan always */
290 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit,
291 sc->sc_typename, sc->sc_paddr, sc->sc_maddr));
293 sc->sc_ports = NULL; /* mark as uninitialised */
295 maddr = sc->sc_maddr;
297 /* Stop the CPU first so it won't stomp around while we load */
299 switch (sc->sc_type) {
301 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
304 *(maddr+SIPCIRESET) = 0;
306 case SIJETPCI: /* fall through to JET ISA */
308 *(maddr+SIJETCONFIG) = 0;
311 *(maddr+SIPLRESET) = 0;
314 *(maddr+SIRESET) = 0;
316 default: /* this should never happen */
317 kprintf("si%d: unsupported configuration\n", unit);
322 /* OK, now lets download the download code */
324 if (SI_ISJET(sc->sc_type)) {
325 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n",
326 unit, si3_t225_dsize));
327 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr,
329 DPRINT((0, DBG_DOWNLOAD,
330 "si%d: jet_bootstrap: nbytes %d -> %x\n",
331 unit, si3_t225_bsize, si3_t225_bootloadaddr));
332 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr,
335 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n",
336 unit, si2_z280_dsize));
337 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr,
341 /* Now start the CPU */
343 switch (sc->sc_type) {
345 /* modify the download code to tell it that it's on an EISA */
347 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
348 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
351 /* modify the download code to tell it that it's on a PCI */
353 *(maddr+SIPCIRESET) = 1;
354 *(maddr+SIPCIINTCL) = 0;
357 *(maddr+SIJETRESET) = 0;
358 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
361 *(maddr+SIJETRESET) = 0;
362 switch (sc->sc_irq) {
364 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
367 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
370 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
373 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
376 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
381 *(maddr+SIRESET_CL) = 0;
382 *(maddr+SIINTCL_CL) = 0;
385 *(maddr+SIPLRESET) = 0x10;
386 switch (sc->sc_irq) {
388 *(maddr+SIPLIRQ11) = 0x10;
391 *(maddr+SIPLIRQ12) = 0x10;
394 *(maddr+SIPLIRQ15) = 0x10;
397 *(maddr+SIPLIRQCLR) = 0x10;
399 default: /* this should _REALLY_ never happen */
400 kprintf("si%d: Uh, it was supported a second ago...\n", unit);
404 DELAY(1000000); /* wait around for a second */
406 regp = (struct si_reg *)maddr;
408 /* wait max of 5 sec for init OK */
409 while (regp->initstat == 0 && y++ < 10) {
412 switch (regp->initstat) {
414 kprintf("si%d: startup timeout - aborting\n", unit);
415 sc->sc_type = SIEMPTY;
418 if (SI_ISJET(sc->sc_type)) {
419 /* set throttle to 100 times per second */
420 regp->int_count = JET_INT_COUNT;
421 /* rx_intr_count is a NOP in Jet */
423 /* set throttle to 125 times per second */
424 regp->int_count = INT_COUNT;
425 /* rx intr max of 25 times per second */
426 regp->rx_int_count = RXINT_COUNT;
428 regp->int_pending = 0; /* no intr pending */
429 regp->int_scounter = 0; /* reset counter */
433 * No modules found, so give up on this one.
435 kprintf("si%d: %s - no ports found\n", unit,
436 si_type[sc->sc_type]);
439 kprintf("si%d: download code version error - initstat %x\n",
440 unit, regp->initstat);
445 * First time around the ports just count them in order
446 * to allocate some memory.
449 modp = (struct si_module *)(maddr + 0x80);
451 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
452 switch (modp->sm_type) {
454 DPRINT((0, DBG_DOWNLOAD,
455 "si%d: Found old TA4 module, 4 ports\n",
460 DPRINT((0, DBG_DOWNLOAD,
461 "si%d: Found old TA8 module, 8 ports\n",
466 DPRINT((0, DBG_DOWNLOAD,
467 "si%d: Found ASIC TA4 module, 4 ports\n",
472 DPRINT((0, DBG_DOWNLOAD,
473 "si%d: Found ASIC TA8 module, 8 ports\n",
478 DPRINT((0, DBG_DOWNLOAD,
479 "si%d: Found CD1400 module, 8 ports\n",
484 DPRINT((0, DBG_DOWNLOAD,
485 "si%d: Found SXDC module, 8 ports\n",
490 kprintf("si%d: unknown module type %d\n",
491 unit, modp->sm_type);
495 /* this was limited in firmware and is also a driver issue */
496 if ((nport + x) > SI_MAXPORTPERCARD) {
497 kprintf("si%d: extra ports ignored\n", unit);
506 if (modp->sm_next == 0)
508 modp = (struct si_module *)
509 (maddr + (unsigned)(modp->sm_next & 0x7fff));
511 sc->sc_ports = kmalloc(sizeof(struct si_port) * nport,
512 M_DEVBUF, M_WAITOK | M_ZERO);
513 sc->sc_nport = nport;
514 for (n = 0; n < nport; ++n) {
515 callout_init(&sc->sc_ports[n].lstart_ch);
516 callout_init(&sc->sc_ports[n].dtr_ch);
520 * allocate tty structures for ports
522 tp = kmalloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
526 * Scan round the ports again, this time initialising.
530 modp = (struct si_module *)(maddr + 0x80);
531 uart_type = 1000; /* arbitary, > uchar_max */
533 switch (modp->sm_type) {
556 ccbp = (struct si_channel *)((char *)modp + 0x100);
557 if (uart_type == 1000)
558 uart_type = ccbp->type;
559 else if (uart_type != ccbp->type)
560 kprintf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
562 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
563 uart_type, si_modulename(sc->sc_type, uart_type));
565 for (x = 0; x < nport; x++, pp++, ccbp++) {
566 pp->sp_ccb = ccbp; /* save the address */
568 pp->sp_pend = IDLE_CLOSE;
569 pp->sp_state = 0; /* internal flag */
570 pp->sp_dtr_wait = 3 * hz;
571 pp->sp_iin.c_iflag = TTYDEF_IFLAG;
572 pp->sp_iin.c_oflag = TTYDEF_OFLAG;
573 pp->sp_iin.c_cflag = TTYDEF_CFLAG;
574 pp->sp_iin.c_lflag = TTYDEF_LFLAG;
575 termioschars(&pp->sp_iin);
576 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed =
578 pp->sp_iout = pp->sp_iin;
581 if (modp->sm_next == 0) {
582 kprintf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
588 si_modulename(sc->sc_type, uart_type));
591 modp = (struct si_module *)
592 (maddr + (unsigned)(modp->sm_next & 0x7fff));
594 if (done_chartimes == 0) {
595 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
596 if ((spt->sp_code /= hz) == 0)
602 for (x = 0; x < sc->sc_nport; x++) {
603 /* sync with the manuals that start at 1 */
604 y = x + 1 + unit * (1 << SI_CARDSHIFT);
605 make_dev(&si_ops, x, 0, 0, 0600, "ttyA%02d", y);
606 make_dev(&si_ops, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
607 make_dev(&si_ops, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
608 make_dev(&si_ops, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
609 make_dev(&si_ops, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
610 make_dev(&si_ops, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
612 make_dev(&si_ops, 0x40000, 0, 0, 0600, "si_control");
617 siopen(struct dev_open_args *ap)
619 cdev_t dev = ap->a_head.a_dev;
624 volatile struct si_channel *ccbp;
626 int mynor = minor(dev);
628 /* quickly let in /dev/si_control */
629 if (IS_CONTROLDEV(mynor)) {
630 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)))
635 card = SI_CARD(mynor);
636 sc = devclass_get_softc(si_devclass, card);
640 if (sc->sc_type == SIEMPTY) {
641 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
642 card, sc->sc_typename));
646 port = SI_PORT(mynor);
647 if (port >= sc->sc_nport) {
648 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
649 card, sc->sc_nport));
655 * We've now got a device, so start the poller.
657 if (init_finished == 0) {
658 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
663 /* initial/lock device */
664 if (IS_STATE(mynor)) {
668 pp = sc->sc_ports + port;
669 tp = pp->sp_tty; /* the "real" tty */
671 ccbp = pp->sp_ccb; /* Find control block */
672 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x)\n",
673 devtoname(dev), ap->a_oflags, ap->a_devtype));
675 crit_enter(); /* Keep others out */
679 while (pp->sp_state & SS_DTR_OFF) {
680 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
685 if (tp->t_state & TS_ISOPEN) {
687 * The device is open, so everything has been initialised.
690 if (IS_CALLOUT(mynor)) {
691 if (!pp->sp_active_out) {
696 if (pp->sp_active_out) {
697 if (ap->a_oflags & O_NONBLOCK) {
701 error = tsleep(&pp->sp_active_out,
708 if (tp->t_state & TS_XCLUDE &&
709 priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
710 DPRINT((pp, DBG_OPEN|DBG_FAIL,
711 "already open and EXCLUSIVE set\n"));
717 * The device isn't open, so there are no conflicts.
718 * Initialize it. Avoid sleep... :-)
720 DPRINT((pp, DBG_OPEN, "first open\n"));
721 tp->t_oproc = si_start;
722 tp->t_stop = si_stop;
723 tp->t_param = siparam;
725 tp->t_termios = mynor & SI_CALLOUT_MASK
726 ? pp->sp_iout : pp->sp_iin;
728 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
730 ++pp->sp_wopeners; /* in case of sleep in siparam */
732 error = siparam(tp, &tp->t_termios);
737 /* XXX: we should goto_top if siparam slept */
739 /* set initial DCD state */
740 pp->sp_last_hi_ip = ccbp->hi_ip;
741 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
742 (*linesw[tp->t_line].l_modem)(tp, 1);
746 /* whoops! we beat the close! */
747 if (pp->sp_state & SS_CLOSING) {
748 /* try and stop it from proceeding to bash the hardware */
749 pp->sp_state &= ~SS_CLOSING;
753 * Wait for DCD if necessary
755 if (!(tp->t_state & TS_CARR_ON) &&
756 !IS_CALLOUT(mynor) &&
757 !(tp->t_cflag & CLOCAL) &&
758 !(ap->a_oflags & O_NONBLOCK)) {
760 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
761 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
768 error = (*linesw[tp->t_line].l_open)(dev, tp);
769 si_disc_optim(tp, &tp->t_termios, pp);
770 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
771 pp->sp_active_out = TRUE;
773 pp->sp_state |= SS_OPEN; /* made it! */
778 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
780 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
787 siclose(struct dev_close_args *ap)
789 cdev_t dev = ap->a_head.a_dev;
793 int mynor = minor(dev);
795 if (IS_SPECIAL(mynor))
800 pp = MINOR2PP(mynor);
803 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x) sp_state:%x\n",
804 devtoname(dev), ap->a_fflag, ap->a_devtype, pp->sp_state));
806 /* did we sleep and loose a race? */
807 if (pp->sp_state & SS_CLOSING) {
808 /* error = ESOMETING? */
812 /* begin race detection.. */
813 pp->sp_state |= SS_CLOSING;
815 si_write_enable(pp, 0); /* block writes for ttywait() */
817 /* THIS MAY SLEEP IN TTYWAIT!!! */
818 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
820 si_write_enable(pp, 1);
822 /* did we sleep and somebody started another open? */
823 if (!(pp->sp_state & SS_CLOSING)) {
824 /* error = ESOMETING? */
827 /* ok. we are now still on the right track.. nuke the hardware */
829 if (pp->sp_state & SS_LSTART) {
830 callout_stop(&pp->lstart_ch);
831 pp->sp_state &= ~SS_LSTART;
834 si_stop(tp, FREAD | FWRITE);
838 pp->sp_state &= ~SS_OPEN;
841 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
847 sihardclose(struct si_port *pp)
850 volatile struct si_channel *ccbp;
855 ccbp = pp->sp_ccb; /* Find control block */
856 if (tp->t_cflag & HUPCL ||
857 (!pp->sp_active_out &&
858 !(ccbp->hi_ip & IP_DCD) &&
859 !(pp->sp_iin.c_cflag & CLOCAL)) ||
860 !(tp->t_state & TS_ISOPEN)) {
862 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
863 (void) si_command(pp, FCLOSE, SI_NOWAIT);
865 if (pp->sp_dtr_wait != 0) {
866 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
868 pp->sp_state |= SS_DTR_OFF;
872 pp->sp_active_out = FALSE;
873 wakeup((caddr_t)&pp->sp_active_out);
874 wakeup(TSA_CARR_ON(tp));
881 * called at splsoftclock()...
884 sidtrwakeup(void *chan)
890 pp = (struct si_port *)chan;
891 pp->sp_state &= ~SS_DTR_OFF;
892 wakeup(&pp->sp_dtr_wait);
898 siwrite(struct dev_write_args *ap)
900 cdev_t dev = ap->a_head.a_dev;
904 int mynor = minor(dev);
906 if (IS_SPECIAL(mynor)) {
907 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
910 pp = MINOR2PP(mynor);
912 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), ap->a_uio, ap->a_ioflag));
916 * If writes are currently blocked, wait on the "real" tty
918 while (pp->sp_state & SS_BLOCKWRITE) {
919 pp->sp_state |= SS_WAITWRITE;
920 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
921 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
922 "siwrite", tp->t_timeout))) {
923 if (error == EWOULDBLOCK)
929 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
937 siioctl(struct dev_ioctl_args *ap)
939 cdev_t dev = ap->a_head.a_dev;
940 caddr_t data = ap->a_data;
941 u_long cmd = ap->a_cmd;
945 int mynor = minor(dev);
947 #if defined(COMPAT_43)
952 if (IS_SI_IOCTL(cmd))
953 return(si_Sioctl(dev, cmd, data, ap->a_fflag, ap->a_cred));
955 pp = MINOR2PP(mynor);
958 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
959 devtoname(dev), cmd, data, ap->a_fflag));
960 if (IS_STATE(mynor)) {
963 switch (mynor & SI_STATE_MASK) {
964 case SI_INIT_STATE_MASK:
965 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
967 case SI_LOCK_STATE_MASK:
968 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
975 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
978 *ct = *(struct termios *)data;
981 *(struct termios *)data = *ct;
984 *(int *)data = TTYDISC;
987 bzero(data, sizeof(struct winsize));
994 * Do the old-style ioctl compat routines...
996 #if defined(COMPAT_43)
997 term = tp->t_termios;
999 error = ttsetcompat(tp, &cmd, data, &term);
1003 data = (caddr_t)&term;
1006 * Do the initial / lock state business
1008 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1010 struct termios *dt = (struct termios *)data;
1011 struct termios *lt = mynor & SI_CALLOUT_MASK
1012 ? &pp->sp_lout : &pp->sp_lin;
1014 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1015 (dt->c_iflag & ~lt->c_iflag);
1016 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1017 (dt->c_oflag & ~lt->c_oflag);
1018 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1019 (dt->c_cflag & ~lt->c_cflag);
1020 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1021 (dt->c_lflag & ~lt->c_lflag);
1022 for (cc = 0; cc < NCCS; ++cc)
1023 if (lt->c_cc[cc] != 0)
1024 dt->c_cc[cc] = tp->t_cc[cc];
1025 if (lt->c_ispeed != 0)
1026 dt->c_ispeed = tp->t_ispeed;
1027 if (lt->c_ospeed != 0)
1028 dt->c_ospeed = tp->t_ospeed;
1032 * Block user-level writes to give the ttywait()
1033 * a chance to completely drain for commands
1034 * that require the port to be in a quiescent state.
1043 blocked++; /* block writes for ttywait() and siparam() */
1044 si_write_enable(pp, 0);
1047 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1048 ap->a_fflag, ap->a_cred);
1049 if (error != ENOIOCTL)
1054 error = ttioctl(tp, cmd, data, ap->a_fflag);
1055 si_disc_optim(tp, &tp->t_termios, pp);
1056 if (error != ENOIOCTL) {
1064 si_command(pp, SBREAK, SI_WAIT);
1067 si_command(pp, EBREAK, SI_WAIT);
1070 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1073 (void) si_modem(pp, SET, 0);
1076 (void) si_modem(pp, SET, *(int *)data);
1079 (void) si_modem(pp, BIS, *(int *)data);
1082 (void) si_modem(pp, BIC, *(int *)data);
1085 *(int *)data = si_modem(pp, GET, 0);
1088 /* must be root since the wait applies to following logins */
1089 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
1091 pp->sp_dtr_wait = *(int *)data * hz / 100;
1094 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1102 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1104 si_write_enable(pp, 1);
1109 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1112 si_Sioctl(cdev_t dev, u_long cmd, caddr_t data, int flag, struct ucred *cred)
1114 struct si_softc *xsc;
1115 struct si_port *xpp;
1116 volatile struct si_reg *regp;
1118 struct si_pstat *sps;
1121 int mynor = minor(dev);
1123 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1124 devtoname(dev), cmd, data, flag));
1127 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1128 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1129 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1132 if (!IS_CONTROLDEV(mynor)) {
1133 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1137 crit_enter(); /* better safe than sorry */
1141 #define SUCHECK if ((error = priv_check_cred(cred, PRIV_ROOT, 0))) goto out
1159 * Check that a controller for this port exists
1162 /* may also be a struct si_pstat, a superset of si_tcsi */
1164 dp = (struct si_tcsi *)data;
1165 sps = (struct si_pstat *)data;
1167 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1168 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1173 * And check that a port exists
1176 if (port < 0 || port >= xsc->sc_nport) {
1180 xpp = xsc->sc_ports + port;
1181 regp = (struct si_reg *)xsc->sc_maddr;
1191 xpp->sp_debug = DBG_ALL;
1192 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1193 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1200 case TCSISDBG_LEVEL:
1201 case TCSIGDBG_LEVEL:
1203 if (cmd == TCSIGDBG_LEVEL) {
1204 dp->tc_dbglvl = xpp->sp_debug;
1207 xpp->sp_debug = dp->tc_dbglvl;
1215 dp->tc_int = regp->rx_int_count;
1219 regp->rx_int_count = dp->tc_int;
1222 dp->tc_int = regp->int_count;
1226 regp->int_count = dp->tc_int;
1229 dp->tc_int = xpp->sp_ccb->hi_ip;
1231 /* these next three use a different structure */
1234 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1238 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1242 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1250 return(error); /* success */
1254 * siparam() : Configure line params
1255 * called at spltty();
1256 * this may sleep, does not flush, nor wait for drain, nor block writes
1257 * caller must arrange this if it's important..
1260 siparam(struct tty *tp, struct termios *t)
1262 struct si_port *pp = TP2PP(tp);
1263 volatile struct si_channel *ccbp;
1264 int cflag, iflag, oflag, lflag;
1265 int error = 0; /* shutup gcc */
1266 int ispeed = 0; /* shutup gcc */
1267 int ospeed = 0; /* shutup gcc */
1270 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1275 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1276 oflag, cflag, iflag, lflag));
1278 /* XXX - if Jet host and SXDC module, use extended baud rates */
1280 /* if not hung up.. */
1281 if (t->c_ospeed != 0) {
1282 /* translate baud rate to firmware values */
1283 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1284 ispeed = t->c_ispeed ?
1285 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1287 /* enforce legit baud rate */
1288 if (ospeed < 0 || ispeed < 0)
1296 /* ========== set hi_break ========== */
1298 if (iflag & IGNBRK) /* Breaks */
1300 if (iflag & BRKINT) /* Interrupt on break? */
1302 if (iflag & PARMRK) /* Parity mark? */
1304 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1306 ccbp->hi_break = val;
1308 /* ========== set hi_csr ========== */
1309 /* if not hung up.. */
1310 if (t->c_ospeed != 0) {
1311 /* Set I/O speeds */
1312 val = (ispeed << 4) | ospeed;
1316 /* ========== set hi_mr2 ========== */
1318 if (cflag & CSTOPB) /* Stop bits */
1323 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1324 * a DCE, hence the reverse sense of RTS and CTS
1326 /* Output Flow - RTS must be raised before data can be sent */
1327 if (cflag & CCTS_OFLOW)
1332 /* ========== set hi_mr1 ========== */
1334 if (!(cflag & PARENB)) /* Parity */
1341 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1343 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1345 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1347 } else { /* Must be 5 */
1351 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1352 * a DCE, hence the reverse sense of RTS and CTS
1354 /* Input Flow - CTS is raised when port is ready to receive data */
1355 if (cflag & CRTS_IFLOW)
1360 /* ========== set hi_mask ========== */
1362 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1364 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1366 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1368 } else { /* Must be 5 */
1374 ccbp->hi_mask = val;
1376 /* ========== set hi_prtcl ========== */
1377 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1387 ccbp->hi_prtcl = val;
1390 /* ========== set hi_{rx|tx}{on|off} ========== */
1391 /* XXX: the card TOTALLY shields us from the flow control... */
1392 ccbp->hi_txon = t->c_cc[VSTART];
1393 ccbp->hi_txoff = t->c_cc[VSTOP];
1395 ccbp->hi_rxon = t->c_cc[VSTART];
1396 ccbp->hi_rxoff = t->c_cc[VSTOP];
1398 /* ========== send settings to the card ========== */
1399 /* potential sleep here */
1400 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1401 si_command(pp, LOPEN, SI_WAIT); /* open it */
1403 si_command(pp, CONFIG, SI_WAIT); /* change params */
1405 /* ========== set DTR etc ========== */
1406 /* Hangup if ospeed == 0 */
1407 if (t->c_ospeed == 0) {
1408 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1411 * If the previous speed was 0, may need to re-enable
1414 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1417 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1418 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1425 * Enable or Disable the writes to this channel...
1426 * "state" -> enabled = 1; disabled = 0;
1429 si_write_enable(struct si_port *pp, int state)
1435 pp->sp_state &= ~SS_BLOCKWRITE;
1436 if (pp->sp_state & SS_WAITWRITE) {
1437 pp->sp_state &= ~SS_WAITWRITE;
1439 wakeup((caddr_t)pp);
1442 pp->sp_state |= SS_BLOCKWRITE;
1449 * Set/Get state of modem control lines.
1450 * Due to DCE-like behaviour of the adapter, some signals need translation:
1455 si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1457 volatile struct si_channel *ccbp;
1460 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1461 ccbp = pp->sp_ccb; /* Find channel address */
1466 if (x & IP_DCD) bits |= TIOCM_CAR;
1467 if (x & IP_DTR) bits |= TIOCM_DTR;
1468 if (x & IP_RTS) bits |= TIOCM_RTS;
1469 if (x & IP_RI) bits |= TIOCM_RI;
1472 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1476 if (bits & TIOCM_DTR)
1478 if (bits & TIOCM_RTS)
1483 if (bits & TIOCM_DTR)
1484 ccbp->hi_op &= ~OP_DSR;
1485 if (bits & TIOCM_RTS)
1486 ccbp->hi_op &= ~OP_CTS;
1492 * Handle change of modem state
1495 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1497 /* if a modem dev */
1498 if (hi_ip & IP_DCD) {
1499 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1500 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1502 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1505 if (pp->sp_last_hi_ip & IP_DCD) {
1506 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1507 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1508 (void) si_modem(pp, SET, 0);
1511 pp->sp_last_hi_ip = hi_ip;
1516 * Poller to catch missed interrupts.
1518 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1519 * better response. We could really use a "periodic" version timeout(). :-)
1523 si_poll(void *nothing)
1525 struct si_softc *sc;
1527 volatile struct si_reg *regp;
1531 DPRINT((0, DBG_POLL, "si_poll()\n"));
1536 for (i = 0; i < si_numunits; i++) {
1537 sc = devclass_get_softc(si_devclass, i);
1538 if (sc == NULL || sc->sc_type == SIEMPTY)
1540 regp = (struct si_reg *)sc->sc_maddr;
1543 * See if there has been a pending interrupt for 2 seconds
1544 * or so. The test (int_scounter >= 200) won't correspond
1545 * to 2 seconds if int_count gets changed.
1547 if (regp->int_pending != 0) {
1548 if (regp->int_scounter >= 200 &&
1549 regp->initstat == 1) {
1550 kprintf("si%d: lost intr\n", i);
1554 regp->int_scounter = 0;
1558 * gripe about no input flow control..
1561 for (port = 0; port < sc->sc_nport; pp++, port++) {
1562 if (pp->sp_delta_overflows > 0) {
1563 kprintf("si%d: %d tty level buffer overflows\n",
1564 i, pp->sp_delta_overflows);
1565 pp->sp_delta_overflows = 0;
1569 if (lost || si_realpoll)
1570 si_intr(NULL); /* call intr with fake vector */
1574 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
1576 #endif /* ifdef POLL */
1579 * The interrupt handler polls ALL ports on ALL adapters each time
1583 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1584 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1589 struct si_softc *sc;
1591 volatile struct si_channel *ccbp;
1593 volatile caddr_t maddr;
1595 int x, card, port, n, i, isopen;
1601 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1607 * When we get an int we poll all the channels and do ALL pending
1608 * work, not just the first one we find. This allows all cards to
1609 * share the same vector.
1611 * XXX - But if we're sharing the vector with something that's NOT
1612 * a SI/XIO/SX card, we may be making more work for ourselves.
1614 for (card = 0; card < si_numunits; card++) {
1615 sc = devclass_get_softc(si_devclass, card);
1616 if (sc == NULL || sc->sc_type == SIEMPTY)
1620 * First, clear the interrupt
1622 switch(sc->sc_type) {
1624 maddr = sc->sc_maddr;
1625 ((volatile struct si_reg *)maddr)->int_pending = 0;
1626 /* flag nothing pending */
1627 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1628 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1631 maddr = sc->sc_maddr;
1632 ((volatile struct si_reg *)maddr)->int_pending = 0;
1633 *(maddr+SIPLIRQCLR) = 0x00;
1634 *(maddr+SIPLIRQCLR) = 0x10;
1637 maddr = sc->sc_maddr;
1638 ((volatile struct si_reg *)maddr)->int_pending = 0;
1639 *(maddr+SIPCIINTCL) = 0x0;
1641 case SIJETPCI: /* fall through to JETISA case */
1643 maddr = sc->sc_maddr;
1644 ((volatile struct si_reg *)maddr)->int_pending = 0;
1645 *(maddr+SIJETINTCL) = 0x0;
1648 maddr = sc->sc_maddr;
1649 ((volatile struct si_reg *)maddr)->int_pending = 0;
1650 (void)inb(sc->sc_iobase + 3);
1656 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1661 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1667 * See if a command has completed ?
1669 if (ccbp->hi_stat != pp->sp_pend) {
1670 DPRINT((pp, DBG_INTR,
1671 "si_intr hi_stat = 0x%x, pend = %d\n",
1672 ccbp->hi_stat, pp->sp_pend));
1673 switch(pp->sp_pend) {
1680 pp->sp_pend = ccbp->hi_stat;
1681 /* sleeping in si_command */
1682 wakeup(&pp->sp_state);
1685 pp->sp_pend = ccbp->hi_stat;
1690 * Continue on if it's closed
1692 if (ccbp->hi_stat == IDLE_CLOSE) {
1697 * Do modem state change if not a local device
1699 si_modem_state(pp, tp, ccbp->hi_ip);
1702 * Check to see if we should 'receive' characters.
1704 if (tp->t_state & TS_CONNECTED &&
1705 tp->t_state & TS_ISOPEN)
1711 * Do input break processing
1713 if (ccbp->hi_state & ST_BREAK) {
1715 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1717 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1718 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1722 * Do RX stuff - if not open then dump any characters.
1723 * XXX: This is VERY messy and needs to be cleaned up.
1725 * XXX: can we leave data in the host adapter buffer
1726 * when the clists are full? That may be dangerous
1727 * if the user cannot get an interrupt signal through.
1730 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1733 ccbp->hi_rxopos = ccbp->hi_rxipos;
1738 * If the tty input buffers are blocked, stop emptying
1739 * the incoming buffers and let the auto flow control
1742 if (tp->t_state & TS_TBLOCK) {
1747 * Process read characters if not skipped above
1749 op = ccbp->hi_rxopos;
1750 ip = ccbp->hi_rxipos;
1760 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1764 * Suck characters out of host card buffer into the
1765 * "input staging buffer" - so that we dont leave the
1766 * host card in limbo while we're possibly echoing
1767 * characters and possibly flushing input inside the
1768 * ldisc l_rint() routine.
1770 if (n <= SI_BUFFERSIZE - op) {
1772 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1773 z = ccbp->hi_rxbuf + op;
1774 si_vbcopy(z, si_rxbuf, n);
1778 x = SI_BUFFERSIZE - op;
1780 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1781 z = ccbp->hi_rxbuf + op;
1782 si_vbcopy(z, si_rxbuf, x);
1784 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1787 si_vbcopy(z, si_rxbuf + x, n - x);
1792 /* clear collected characters from buffer */
1793 ccbp->hi_rxopos = op;
1795 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1800 * n = number of chars placed in si_rxbuf
1804 * Avoid the grotesquely inefficient lineswitch
1805 * routine (ttyinput) in "raw" mode. It usually
1806 * takes about 450 instructions (that's without
1807 * canonical processing or echo!). slinput is
1808 * reasonably fast (usually 40 instructions
1809 * plus call overhead).
1811 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1813 /* block if the driver supports it */
1814 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1815 (tp->t_cflag & CRTS_IFLOW ||
1816 tp->t_iflag & IXOFF) &&
1817 !(tp->t_state & TS_TBLOCK))
1824 pp->sp_delta_overflows +=
1825 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1828 if (tp->t_state & TS_TTSTOP &&
1829 (tp->t_iflag & IXANY ||
1830 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1831 tp->t_state &= ~TS_TTSTOP;
1832 tp->t_lflag &= ~FLUSHO;
1837 * It'd be nice to not have to go through the
1838 * function call overhead for each char here.
1839 * It'd be nice to block input it, saving a
1840 * loop here and the call/return overhead.
1842 for(x = 0; x < n; x++) {
1844 if ((*linesw[tp->t_line].l_rint)(i, tp)
1846 pp->sp_delta_overflows++;
1849 * doesn't seem to be much point doing
1850 * this here.. this driver has no
1851 * softtty processing! ??
1853 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1858 goto more_rx; /* try for more until RXbuf is empty */
1860 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1865 (*linesw[tp->t_line].l_start)(tp);
1867 } /* end of for (all ports on this controller) */
1868 } /* end of for (all controllers) */
1871 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1875 * Nudge the transmitter...
1877 * XXX: I inherited some funny code here. It implies the host card only
1878 * interrupts when the transmit buffer reaches the low-water-mark, and does
1879 * not interrupt when it's actually hits empty. In some cases, we have
1880 * processes waiting for complete drain, and we need to simulate an interrupt
1881 * about when we think the buffer is going to be empty (and retry if not).
1882 * I really am not certain about this... I *need* the hardware manuals.
1885 si_start(struct tty *tp)
1888 volatile struct si_channel *ccbp;
1892 int count, n, amount, buffer_full;
1899 DPRINT((pp, DBG_ENTRY|DBG_START,
1900 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1901 tp, tp->t_state, pp->sp_state, qp->c_cc));
1903 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1909 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1910 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1912 while ((nchar = qp->c_cc) > 0) {
1913 if ((BYTE)count >= 255) {
1917 amount = min(nchar, (255 - (BYTE)count));
1918 ipos = (unsigned int)ccbp->hi_txipos;
1919 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1920 /* will it fit in one lump? */
1921 if ((SI_BUFFERSIZE - ipos) >= n) {
1922 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1924 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1925 SI_BUFFERSIZE - ipos);
1926 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1927 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1929 ccbp->hi_txipos += n;
1930 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1933 if (count != 0 && nchar == 0) {
1934 tp->t_state |= TS_BUSY;
1936 tp->t_state &= ~TS_BUSY;
1942 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1943 (BYTE)count, nchar, tp->t_state));
1945 if (tp->t_state & TS_BUSY)
1949 time = ttspeedtab(tp->t_ospeed, chartimes);
1953 time = nchar / time;
1957 DPRINT((pp, DBG_START,
1958 "bad char time value! %d\n", time));
1962 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1963 callout_stop(&pp->lstart_ch);
1965 pp->sp_state |= SS_LSTART;
1967 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1968 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
1973 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1977 * Note: called at splsoftclock from the timeout code
1978 * This has to deal with two things... cause wakeups while waiting for
1979 * tty drains on last process exit, and call l_start at about the right
1980 * time for protocols like ppp.
1983 si_lstart(void *arg)
1985 struct si_port *pp = arg;
1988 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1993 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
1997 pp->sp_state &= ~SS_LSTART;
1998 pp->sp_state |= SS_INLSTART;
2002 /* deal with the process exit case */
2005 /* nudge protocols - eg: ppp */
2006 (*linesw[tp->t_line].l_start)(tp);
2008 pp->sp_state &= ~SS_INLSTART;
2013 * Stop output on a line. called at spltty();
2016 si_stop(struct tty *tp, int rw)
2018 volatile struct si_channel *ccbp;
2024 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2026 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2028 /* what level are we meant to be flushing anyway? */
2029 if (tp->t_state & TS_BUSY) {
2030 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2031 tp->t_state &= ~TS_BUSY;
2032 ttwwakeup(tp); /* Bruce???? */
2035 #if 1 /* XXX: this doesn't work right yet.. */
2036 /* XXX: this may have been failing because we used to call l_rint()
2037 * while we were looping based on these two counters. Now, we collect
2038 * the data and then loop stuffing it into l_rint(), making this
2039 * useless. Should we cause this to blow away the staging buffer?
2042 ccbp->hi_rxopos = ccbp->hi_rxipos;
2048 * Issue a command to the host card CPU.
2052 si_command(struct si_port *pp, int cmd, int waitflag)
2054 volatile struct si_channel *ccbp = pp->sp_ccb;
2057 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2058 pp, cmd, waitflag, ccbp->hi_stat));
2060 crit_enter(); /* Keep others out */
2062 /* wait until it's finished what it was doing.. */
2063 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2065 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2069 if (in_intr) { /* Prevent sleep in intr */
2070 DPRINT((pp, DBG_PARAM,
2071 "cmd intr collision - completing %d\trequested %d\n",
2075 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2081 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2083 /* if there was a pending command, cause a state-change wakeup */
2084 switch(pp->sp_pend) {
2091 wakeup(&pp->sp_state);
2097 pp->sp_pend = cmd; /* New command pending */
2098 ccbp->hi_stat = cmd; /* Post it */
2101 if (in_intr) { /* If in interrupt handler */
2102 DPRINT((pp, DBG_PARAM,
2103 "attempt to sleep in si_intr - cmd req %d\n",
2107 } else while(ccbp->hi_stat != IDLE_OPEN &&
2108 ccbp->hi_stat != IDLE_BREAK) {
2109 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2118 si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2121 * XXX can skip a lot more cases if Smarts. Maybe
2122 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2123 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2125 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2126 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2127 (!(t->c_iflag & PARMRK) ||
2128 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2129 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2130 linesw[tp->t_line].l_rint == ttyinput)
2131 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2133 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2134 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2135 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2136 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2144 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2148 if ((pp == NULL && (si_debug&flags)) ||
2149 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2151 kprintf("%ci%d(%d): ", 's',
2152 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2153 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2154 __va_start(ap, fmt);
2161 si_mctl2str(enum si_mctl cmd)
2179 si_modulename(int host_type, int uart_type)
2181 switch (host_type) {
2182 /* Z280 based cards */
2187 switch (uart_type) {
2194 /* T225 based hosts */
2197 switch (uart_type) {