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suser_* to priv_* conversion
[dragonfly.git] / sys / dev / serial / si / si.c
blob3a19c35302758f17bee4fab11d0d489b2616f228
1 /*
2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors.
3 *
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>
7 *
8 * Originally derived from: SunOS 4.x version
9 * Ported from BSDI version to FreeBSD by Peter Wemm.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
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.
27 *
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.
32 *
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 $
35 */
36
37 #ifndef lint
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";
41 #endif /* not lint */
42
43 #include "opt_compat.h"
44 #include "opt_debug_si.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
49 #include <sys/ioctl_compat.h>
50 #endif
51 #include <sys/tty.h>
52 #include <sys/proc.h>
53 #include <sys/priv.h>
54 #include <sys/conf.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>
60 #include <sys/bus.h>
61 #include <sys/rman.h>
62 #include <sys/thread2.h>
63
64 #include <machine/clock.h>
65
66 #include <vm/vm.h>
67 #include <vm/pmap.h>
68
69 #include <machine/stdarg.h>
70
71 #include "sireg.h"
72 #include "sivar.h"
73 #include "si.h"
74
75 /*
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.
79 *
80 * The controller is interfaced to the host via dual port RAM
81 * and an interrupt.
82 *
83 * The code for the Host 1 (very old ISA cards) has not been tested.
84 */
85
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 */
93
94 enum si_mctl { GET, SET, BIS, BIC };
95
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);
106
107 #ifdef SI_DEBUG
108 static char *si_mctl2str(enum si_mctl cmd);
109 #endif
110
111 static int siparam(struct tty *, struct termios *);
112
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);
115
116 static d_open_t siopen;
117 static d_close_t siclose;
118 static d_write_t siwrite;
119 static d_ioctl_t siioctl;
120
121 #define CDEV_MAJOR 68
122 static struct dev_ops si_ops = {
123 { "si", CDEV_MAJOR, D_TTY | D_KQFILTER },
124 .d_open = siopen,
125 .d_close = siclose,
126 .d_read = ttyread,
127 .d_write = siwrite,
128 .d_ioctl = siioctl,
129 .d_poll = ttypoll,
130 .d_kqfilter = ttykqfilter
131 };
132
133 static int si_Nports;
134 static int si_Nmodules;
135 static int si_debug = 0; /* data, not bss, so it's patchable */
136
137 SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
138
139 static struct tty *si__tty;
140
141 static int si_numunits;
142 static struct callout poll_ch;
143
144 devclass_t si_devclass;
145
146 #ifndef B2000 /* not standard, but the hardware knows it. */
147 # define B2000 2000
148 #endif
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") */
164 { -1, -1 },
165 };
166
167
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[] = {
172 { B75, 8, },
173 { B110, 11, },
174 { B150, 15, },
175 { B300, 30, },
176 { B600, 60, },
177 { B1200, 120, },
178 { B2000, 200, },
179 { B2400, 240, },
180 { B4800, 480, },
181 { B9600, 960, },
182 { B19200, 1920, },
183 { B38400, 3840, },
184 { B57600, 5760, },
185 { B115200, 11520, },
186 { -1, -1 },
187 };
188 static volatile int in_intr = 0; /* Inside interrupt handler? */
189
190 #ifdef POLL
191 static int si_pollrate; /* in addition to irq */
192 static int si_realpoll = 0; /* poll HW on timer */
193
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, "");
196
197 static int init_finished = 0;
198 static void si_poll(void *);
199 #endif
200
201 /*
202 * Array of adapter types and the corresponding RAM size. The order of
203 * entries here MUST match the ordinal of the adapter type.
204 */
205 static char *si_type[] = {
206 "EMPTY",
207 "SIHOST",
208 "SIMCA", /* FreeBSD does not support Microchannel */
209 "SIHOST2",
210 "SIEISA",
211 "SIPCI",
212 "SXPCI",
213 "SXISA",
214 };
215
216 /*
217 * We have to make an 8 bit version of bcopy, since some cards can't
218 * deal with 32 bit I/O
219 */
220 static void __inline
221 si_bcopy(const void *src, void *dst, size_t len)
222 {
223 const uint8_t *src_byte = (const uint8_t *)src;
224 uint8_t *dst_byte = (uint8_t *)dst;
225
226 while (len--)
227 *dst_byte++ = *src_byte++;
228 }
229
230 static void __inline
231 si_vbcopy(const volatile void *src, void *dst, size_t len)
232 {
233 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
234 uint8_t *dst_byte = (uint8_t *)dst;
235
236 while (len--)
237 *dst_byte++ = *src_byte++;
238 }
239
240 static void __inline
241 si_bcopyv(const void *src, volatile void *dst, size_t len)
242 {
243 const uint8_t *src_byte = (const uint8_t *)src;
244 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
245
246 while (len--)
247 *dst_byte++ = *src_byte++;
248 }
249
250 /*
251 * Attach the device. Initialize the card.
252 */
253 int
254 siattach(device_t dev)
255 {
256 int unit;
257 struct si_softc *sc;
258 struct si_port *pp;
259 volatile struct si_channel *ccbp;
260 volatile struct si_reg *regp;
261 volatile caddr_t maddr;
262 struct si_module *modp;
263 struct tty *tp;
264 struct speedtab *spt;
265 int nmodule, nport, x, y;
266 int uart_type;
267 int n;
268
269 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
270 callout_init(&poll_ch);
271
272 sc = device_get_softc(dev);
273 unit = device_get_unit(dev);
274
275 sc->sc_typename = si_type[sc->sc_type];
276 if (si_numunits < unit + 1)
277 si_numunits = unit + 1;
278
279 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit));
280
281 #ifdef POLL
282 if (si_pollrate == 0) {
283 si_pollrate = POLLHZ; /* in addition to irq */
284 #ifdef REALPOLL
285 si_realpoll = 1; /* scan always */
286 #endif
287 }
288 #endif
289
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));
292
293 sc->sc_ports = NULL; /* mark as uninitialised */
294
295 maddr = sc->sc_maddr;
296
297 /* Stop the CPU first so it won't stomp around while we load */
298
299 switch (sc->sc_type) {
300 case SIEISA:
301 outb(sc->sc_iobase + 2, sc->sc_irq << 4);
302 break;
303 case SIPCI:
304 *(maddr+SIPCIRESET) = 0;
305 break;
306 case SIJETPCI: /* fall through to JET ISA */
307 case SIJETISA:
308 *(maddr+SIJETCONFIG) = 0;
309 break;
310 case SIHOST2:
311 *(maddr+SIPLRESET) = 0;
312 break;
313 case SIHOST:
314 *(maddr+SIRESET) = 0;
315 break;
316 default: /* this should never happen */
317 kprintf("si%d: unsupported configuration\n", unit);
318 return EINVAL;
319 break;
320 }
321
322 /* OK, now lets download the download code */
323
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,
328 si3_t225_dsize);
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,
333 si3_t225_bsize);
334 } else {
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,
338 si2_z280_dsize);
339 }
340
341 /* Now start the CPU */
342
343 switch (sc->sc_type) {
344 case SIEISA:
345 /* modify the download code to tell it that it's on an EISA */
346 *(maddr + 0x42) = 1;
347 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4);
348 (void)inb(sc->sc_iobase + 3); /* reset interrupt */
349 break;
350 case SIPCI:
351 /* modify the download code to tell it that it's on a PCI */
352 *(maddr+0x42) = 1;
353 *(maddr+SIPCIRESET) = 1;
354 *(maddr+SIPCIINTCL) = 0;
355 break;
356 case SIJETPCI:
357 *(maddr+SIJETRESET) = 0;
358 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN;
359 break;
360 case SIJETISA:
361 *(maddr+SIJETRESET) = 0;
362 switch (sc->sc_irq) {
363 case 9:
364 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90;
365 break;
366 case 10:
367 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0;
368 break;
369 case 11:
370 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0;
371 break;
372 case 12:
373 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0;
374 break;
375 case 15:
376 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0;
377 break;
378 }
379 break;
380 case SIHOST:
381 *(maddr+SIRESET_CL) = 0;
382 *(maddr+SIINTCL_CL) = 0;
383 break;
384 case SIHOST2:
385 *(maddr+SIPLRESET) = 0x10;
386 switch (sc->sc_irq) {
387 case 11:
388 *(maddr+SIPLIRQ11) = 0x10;
389 break;
390 case 12:
391 *(maddr+SIPLIRQ12) = 0x10;
392 break;
393 case 15:
394 *(maddr+SIPLIRQ15) = 0x10;
395 break;
396 }
397 *(maddr+SIPLIRQCLR) = 0x10;
398 break;
399 default: /* this should _REALLY_ never happen */
400 kprintf("si%d: Uh, it was supported a second ago...\n", unit);
401 return EINVAL;
402 }
403
404 DELAY(1000000); /* wait around for a second */
405
406 regp = (struct si_reg *)maddr;
407 y = 0;
408 /* wait max of 5 sec for init OK */
409 while (regp->initstat == 0 && y++ < 10) {
410 DELAY(500000);
411 }
412 switch (regp->initstat) {
413 case 0:
414 kprintf("si%d: startup timeout - aborting\n", unit);
415 sc->sc_type = SIEMPTY;
416 return EINVAL;
417 case 1:
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 */
422 } else {
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;
427 }
428 regp->int_pending = 0; /* no intr pending */
429 regp->int_scounter = 0; /* reset counter */
430 break;
431 case 0xff:
432 /*
433 * No modules found, so give up on this one.
434 */
435 kprintf("si%d: %s - no ports found\n", unit,
436 si_type[sc->sc_type]);
437 return 0;
438 default:
439 kprintf("si%d: download code version error - initstat %x\n",
440 unit, regp->initstat);
441 return EINVAL;
442 }
443
444 /*
445 * First time around the ports just count them in order
446 * to allocate some memory.
447 */
448 nport = 0;
449 modp = (struct si_module *)(maddr + 0x80);
450 for (;;) {
451 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp));
452 switch (modp->sm_type) {
453 case TA4:
454 DPRINT((0, DBG_DOWNLOAD,
455 "si%d: Found old TA4 module, 4 ports\n",
456 unit));
457 x = 4;
458 break;
459 case TA8:
460 DPRINT((0, DBG_DOWNLOAD,
461 "si%d: Found old TA8 module, 8 ports\n",
462 unit));
463 x = 8;
464 break;
465 case TA4_ASIC:
466 DPRINT((0, DBG_DOWNLOAD,
467 "si%d: Found ASIC TA4 module, 4 ports\n",
468 unit));
469 x = 4;
470 break;
471 case TA8_ASIC:
472 DPRINT((0, DBG_DOWNLOAD,
473 "si%d: Found ASIC TA8 module, 8 ports\n",
474 unit));
475 x = 8;
476 break;
477 case MTA:
478 DPRINT((0, DBG_DOWNLOAD,
479 "si%d: Found CD1400 module, 8 ports\n",
480 unit));
481 x = 8;
482 break;
483 case SXDC:
484 DPRINT((0, DBG_DOWNLOAD,
485 "si%d: Found SXDC module, 8 ports\n",
486 unit));
487 x = 8;
488 break;
489 default:
490 kprintf("si%d: unknown module type %d\n",
491 unit, modp->sm_type);
492 goto try_next;
493 }
494
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);
498 goto try_next;
499 }
500
501 nport += x;
502 si_Nports += x;
503 si_Nmodules++;
504
505 try_next:
506 if (modp->sm_next == 0)
507 break;
508 modp = (struct si_module *)
509 (maddr + (unsigned)(modp->sm_next & 0x7fff));
510 }
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);
517 }
518
519 /*
520 * allocate tty structures for ports
521 */
522 tp = kmalloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
523 si__tty = tp;
524
525 /*
526 * Scan round the ports again, this time initialising.
527 */
528 pp = sc->sc_ports;
529 nmodule = 0;
530 modp = (struct si_module *)(maddr + 0x80);
531 uart_type = 1000; /* arbitary, > uchar_max */
532 for (;;) {
533 switch (modp->sm_type) {
534 case TA4:
535 nport = 4;
536 break;
537 case TA8:
538 nport = 8;
539 break;
540 case TA4_ASIC:
541 nport = 4;
542 break;
543 case TA8_ASIC:
544 nport = 8;
545 break;
546 case MTA:
547 nport = 8;
548 break;
549 case SXDC:
550 nport = 8;
551 break;
552 default:
553 goto try_next2;
554 }
555 nmodule++;
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",
561 unit, nmodule,
562 ccbp->type, si_modulename(sc->sc_type, ccbp->type),
563 uart_type, si_modulename(sc->sc_type, uart_type));
564
565 for (x = 0; x < nport; x++, pp++, ccbp++) {
566 pp->sp_ccb = ccbp; /* save the address */
567 pp->sp_tty = tp++;
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 =
577 TTYDEF_SPEED;
578 pp->sp_iout = pp->sp_iin;
579 }
580 try_next2:
581 if (modp->sm_next == 0) {
582 kprintf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
583 unit,
584 sc->sc_typename,
585 sc->sc_nport,
586 nmodule,
587 uart_type,
588 si_modulename(sc->sc_type, uart_type));
589 break;
590 }
591 modp = (struct si_module *)
592 (maddr + (unsigned)(modp->sm_next & 0x7fff));
593 }
594 if (done_chartimes == 0) {
595 for (spt = chartimes ; spt->sp_speed != -1; spt++) {
596 if ((spt->sp_code /= hz) == 0)
597 spt->sp_code = 1;
598 }
599 done_chartimes = 1;
600 }
601
602 dev_ops_add(&si_ops, 0x7f, unit);
603 /* path name devsw minor type uid gid perm*/
604 for (x = 0; x < sc->sc_nport; x++) {
605 /* sync with the manuals that start at 1 */
606 y = x + 1 + unit * (1 << SI_CARDSHIFT);
607 make_dev(&si_ops, x, 0, 0, 0600, "ttyA%02d", y);
608 make_dev(&si_ops, x + 0x00080, 0, 0, 0600, "cuaA%02d", y);
609 make_dev(&si_ops, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y);
610 make_dev(&si_ops, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y);
611 make_dev(&si_ops, x + 0x20000, 0, 0, 0600, "ttylA%02d", y);
612 make_dev(&si_ops, x + 0x20080, 0, 0, 0600, "cualA%02d", y);
613 }
614 make_dev(&si_ops, 0x40000, 0, 0, 0600, "si_control");
615 return (0);
616 }
617
618 static int
619 siopen(struct dev_open_args *ap)
620 {
621 cdev_t dev = ap->a_head.a_dev;
622 int error;
623 int card, port;
624 struct si_softc *sc;
625 struct tty *tp;
626 volatile struct si_channel *ccbp;
627 struct si_port *pp;
628 int mynor = minor(dev);
629
630 /* quickly let in /dev/si_control */
631 if (IS_CONTROLDEV(mynor)) {
632 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)))
633 return(error);
634 return(0);
635 }
636
637 card = SI_CARD(mynor);
638 sc = devclass_get_softc(si_devclass, card);
639 if (sc == NULL)
640 return (ENXIO);
641
642 if (sc->sc_type == SIEMPTY) {
643 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
644 card, sc->sc_typename));
645 return(ENXIO);
646 }
647
648 port = SI_PORT(mynor);
649 if (port >= sc->sc_nport) {
650 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n",
651 card, sc->sc_nport));
652 return(ENXIO);
653 }
654
655 #ifdef POLL
656 /*
657 * We've now got a device, so start the poller.
658 */
659 if (init_finished == 0) {
660 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
661 init_finished = 1;
662 }
663 #endif
664
665 /* initial/lock device */
666 if (IS_STATE(mynor)) {
667 return(0);
668 }
669
670 pp = sc->sc_ports + port;
671 tp = pp->sp_tty; /* the "real" tty */
672 dev->si_tty = tp;
673 ccbp = pp->sp_ccb; /* Find control block */
674 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x)\n",
675 devtoname(dev), ap->a_oflags, ap->a_devtype));
676
677 crit_enter(); /* Keep others out */
678 error = 0;
679
680 open_top:
681 while (pp->sp_state & SS_DTR_OFF) {
682 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
683 if (error != 0)
684 goto out;
685 }
686
687 if (tp->t_state & TS_ISOPEN) {
688 /*
689 * The device is open, so everything has been initialised.
690 * handle conflicts.
691 */
692 if (IS_CALLOUT(mynor)) {
693 if (!pp->sp_active_out) {
694 error = EBUSY;
695 goto out;
696 }
697 } else {
698 if (pp->sp_active_out) {
699 if (ap->a_oflags & O_NONBLOCK) {
700 error = EBUSY;
701 goto out;
702 }
703 error = tsleep(&pp->sp_active_out,
704 PCATCH, "sibi", 0);
705 if (error != 0)
706 goto out;
707 goto open_top;
708 }
709 }
710 if (tp->t_state & TS_XCLUDE &&
711 priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
712 DPRINT((pp, DBG_OPEN|DBG_FAIL,
713 "already open and EXCLUSIVE set\n"));
714 error = EBUSY;
715 goto out;
716 }
717 } else {
718 /*
719 * The device isn't open, so there are no conflicts.
720 * Initialize it. Avoid sleep... :-)
721 */
722 DPRINT((pp, DBG_OPEN, "first open\n"));
723 tp->t_oproc = si_start;
724 tp->t_stop = si_stop;
725 tp->t_param = siparam;
726 tp->t_dev = dev;
727 tp->t_termios = mynor & SI_CALLOUT_MASK
728 ? pp->sp_iout : pp->sp_iin;
729
730 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
731
732 ++pp->sp_wopeners; /* in case of sleep in siparam */
733
734 error = siparam(tp, &tp->t_termios);
735
736 --pp->sp_wopeners;
737 if (error != 0)
738 goto out;
739 /* XXX: we should goto_top if siparam slept */
740
741 /* set initial DCD state */
742 pp->sp_last_hi_ip = ccbp->hi_ip;
743 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) {
744 (*linesw[tp->t_line].l_modem)(tp, 1);
745 }
746 }
747
748 /* whoops! we beat the close! */
749 if (pp->sp_state & SS_CLOSING) {
750 /* try and stop it from proceeding to bash the hardware */
751 pp->sp_state &= ~SS_CLOSING;
752 }
753
754 /*
755 * Wait for DCD if necessary
756 */
757 if (!(tp->t_state & TS_CARR_ON) &&
758 !IS_CALLOUT(mynor) &&
759 !(tp->t_cflag & CLOCAL) &&
760 !(ap->a_oflags & O_NONBLOCK)) {
761 ++pp->sp_wopeners;
762 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
763 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
764 --pp->sp_wopeners;
765 if (error != 0)
766 goto out;
767 goto open_top;
768 }
769
770 error = (*linesw[tp->t_line].l_open)(dev, tp);
771 si_disc_optim(tp, &tp->t_termios, pp);
772 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor))
773 pp->sp_active_out = TRUE;
774
775 pp->sp_state |= SS_OPEN; /* made it! */
776
777 out:
778 crit_exit();
779
780 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
781
782 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
783 sihardclose(pp);
784
785 return(error);
786 }
787
788 static int
789 siclose(struct dev_close_args *ap)
790 {
791 cdev_t dev = ap->a_head.a_dev;
792 struct si_port *pp;
793 struct tty *tp;
794 int error = 0;
795 int mynor = minor(dev);
796
797 if (IS_SPECIAL(mynor))
798 return(0);
799
800 crit_enter();
801
802 pp = MINOR2PP(mynor);
803 tp = pp->sp_tty;
804
805 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x) sp_state:%x\n",
806 devtoname(dev), ap->a_fflag, ap->a_devtype, pp->sp_state));
807
808 /* did we sleep and loose a race? */
809 if (pp->sp_state & SS_CLOSING) {
810 /* error = ESOMETING? */
811 goto out;
812 }
813
814 /* begin race detection.. */
815 pp->sp_state |= SS_CLOSING;
816
817 si_write_enable(pp, 0); /* block writes for ttywait() */
818
819 /* THIS MAY SLEEP IN TTYWAIT!!! */
820 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
821
822 si_write_enable(pp, 1);
823
824 /* did we sleep and somebody started another open? */
825 if (!(pp->sp_state & SS_CLOSING)) {
826 /* error = ESOMETING? */
827 goto out;
828 }
829 /* ok. we are now still on the right track.. nuke the hardware */
830
831 if (pp->sp_state & SS_LSTART) {
832 callout_stop(&pp->lstart_ch);
833 pp->sp_state &= ~SS_LSTART;
834 }
835
836 si_stop(tp, FREAD | FWRITE);
837
838 sihardclose(pp);
839 ttyclose(tp);
840 pp->sp_state &= ~SS_OPEN;
841
842 out:
843 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
844 crit_exit();
845 return(error);
846 }
847
848 static void
849 sihardclose(struct si_port *pp)
850 {
851 struct tty *tp;
852 volatile struct si_channel *ccbp;
853
854 crit_enter();
855
856 tp = pp->sp_tty;
857 ccbp = pp->sp_ccb; /* Find control block */
858 if (tp->t_cflag & HUPCL ||
859 (!pp->sp_active_out &&
860 !(ccbp->hi_ip & IP_DCD) &&
861 !(pp->sp_iin.c_cflag && CLOCAL)) ||
862 !(tp->t_state & TS_ISOPEN)) {
863
864 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
865 (void) si_command(pp, FCLOSE, SI_NOWAIT);
866
867 if (pp->sp_dtr_wait != 0) {
868 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
869 sidtrwakeup, pp);
870 pp->sp_state |= SS_DTR_OFF;
871 }
872
873 }
874 pp->sp_active_out = FALSE;
875 wakeup((caddr_t)&pp->sp_active_out);
876 wakeup(TSA_CARR_ON(tp));
877
878 crit_exit();
879 }
880
881
882 /*
883 * called at splsoftclock()...
884 */
885 static void
886 sidtrwakeup(void *chan)
887 {
888 struct si_port *pp;
889
890 crit_enter();
891
892 pp = (struct si_port *)chan;
893 pp->sp_state &= ~SS_DTR_OFF;
894 wakeup(&pp->sp_dtr_wait);
895
896 crit_exit();
897 }
898
899 static int
900 siwrite(struct dev_write_args *ap)
901 {
902 cdev_t dev = ap->a_head.a_dev;
903 struct si_port *pp;
904 struct tty *tp;
905 int error = 0;
906 int mynor = minor(dev);
907
908 if (IS_SPECIAL(mynor)) {
909 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
910 return(ENODEV);
911 }
912 pp = MINOR2PP(mynor);
913 tp = pp->sp_tty;
914 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), ap->a_uio, ap->a_ioflag));
915
916 crit_enter();
917 /*
918 * If writes are currently blocked, wait on the "real" tty
919 */
920 while (pp->sp_state & SS_BLOCKWRITE) {
921 pp->sp_state |= SS_WAITWRITE;
922 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n"));
923 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
924 "siwrite", tp->t_timeout))) {
925 if (error == EWOULDBLOCK)
926 error = EIO;
927 goto out;
928 }
929 }
930
931 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
932 out:
933 crit_exit();
934 return (error);
935 }
936
937
938 static int
939 siioctl(struct dev_ioctl_args *ap)
940 {
941 cdev_t dev = ap->a_head.a_dev;
942 caddr_t data = ap->a_data;
943 u_long cmd = ap->a_cmd;
944 struct si_port *pp;
945 struct tty *tp;
946 int error;
947 int mynor = minor(dev);
948 int blocked = 0;
949 #if defined(COMPAT_43)
950 u_long oldcmd;
951 struct termios term;
952 #endif
953
954 if (IS_SI_IOCTL(cmd))
955 return(si_Sioctl(dev, cmd, data, ap->a_fflag, ap->a_cred));
956
957 pp = MINOR2PP(mynor);
958 tp = pp->sp_tty;
959
960 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
961 devtoname(dev), cmd, data, ap->a_fflag));
962 if (IS_STATE(mynor)) {
963 struct termios *ct;
964
965 switch (mynor & SI_STATE_MASK) {
966 case SI_INIT_STATE_MASK:
967 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
968 break;
969 case SI_LOCK_STATE_MASK:
970 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
971 break;
972 default:
973 return (ENODEV);
974 }
975 switch (cmd) {
976 case TIOCSETA:
977 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
978 if (error != 0)
979 return (error);
980 *ct = *(struct termios *)data;
981 return (0);
982 case TIOCGETA:
983 *(struct termios *)data = *ct;
984 return (0);
985 case TIOCGETD:
986 *(int *)data = TTYDISC;
987 return (0);
988 case TIOCGWINSZ:
989 bzero(data, sizeof(struct winsize));
990 return (0);
991 default:
992 return (ENOTTY);
993 }
994 }
995 /*
996 * Do the old-style ioctl compat routines...
997 */
998 #if defined(COMPAT_43)
999 term = tp->t_termios;
1000 oldcmd = cmd;
1001 error = ttsetcompat(tp, &cmd, data, &term);
1002 if (error != 0)
1003 return (error);
1004 if (cmd != oldcmd)
1005 data = (caddr_t)&term;
1006 #endif
1007 /*
1008 * Do the initial / lock state business
1009 */
1010 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1011 int cc;
1012 struct termios *dt = (struct termios *)data;
1013 struct termios *lt = mynor & SI_CALLOUT_MASK
1014 ? &pp->sp_lout : &pp->sp_lin;
1015
1016 dt->c_iflag = (tp->t_iflag & lt->c_iflag) |
1017 (dt->c_iflag & ~lt->c_iflag);
1018 dt->c_oflag = (tp->t_oflag & lt->c_oflag) |
1019 (dt->c_oflag & ~lt->c_oflag);
1020 dt->c_cflag = (tp->t_cflag & lt->c_cflag) |
1021 (dt->c_cflag & ~lt->c_cflag);
1022 dt->c_lflag = (tp->t_lflag & lt->c_lflag) |
1023 (dt->c_lflag & ~lt->c_lflag);
1024 for (cc = 0; cc < NCCS; ++cc)
1025 if (lt->c_cc[cc] != 0)
1026 dt->c_cc[cc] = tp->t_cc[cc];
1027 if (lt->c_ispeed != 0)
1028 dt->c_ispeed = tp->t_ispeed;
1029 if (lt->c_ospeed != 0)
1030 dt->c_ospeed = tp->t_ospeed;
1031 }
1032
1033 /*
1034 * Block user-level writes to give the ttywait()
1035 * a chance to completely drain for commands
1036 * that require the port to be in a quiescent state.
1037 */
1038 switch (cmd) {
1039 case TIOCSETAW:
1040 case TIOCSETAF:
1041 case TIOCDRAIN:
1042 #ifdef COMPAT_43
1043 case TIOCSETP:
1044 #endif
1045 blocked++; /* block writes for ttywait() and siparam() */
1046 si_write_enable(pp, 0);
1047 }
1048
1049 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1050 ap->a_fflag, ap->a_cred);
1051 if (error != ENOIOCTL)
1052 goto out;
1053
1054 crit_enter();
1055
1056 error = ttioctl(tp, cmd, data, ap->a_fflag);
1057 si_disc_optim(tp, &tp->t_termios, pp);
1058 if (error != ENOIOCTL) {
1059 crit_exit();
1060 goto out;
1061 }
1062
1063 error = 0;
1064 switch (cmd) {
1065 case TIOCSBRK:
1066 si_command(pp, SBREAK, SI_WAIT);
1067 break;
1068 case TIOCCBRK:
1069 si_command(pp, EBREAK, SI_WAIT);
1070 break;
1071 case TIOCSDTR:
1072 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1073 break;
1074 case TIOCCDTR:
1075 (void) si_modem(pp, SET, 0);
1076 break;
1077 case TIOCMSET:
1078 (void) si_modem(pp, SET, *(int *)data);
1079 break;
1080 case TIOCMBIS:
1081 (void) si_modem(pp, BIS, *(int *)data);
1082 break;
1083 case TIOCMBIC:
1084 (void) si_modem(pp, BIC, *(int *)data);
1085 break;
1086 case TIOCMGET:
1087 *(int *)data = si_modem(pp, GET, 0);
1088 break;
1089 case TIOCMSDTRWAIT:
1090 /* must be root since the wait applies to following logins */
1091 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
1092 if (error == 0)
1093 pp->sp_dtr_wait = *(int *)data * hz / 100;
1094 break;
1095 case TIOCMGDTRWAIT:
1096 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1097 break;
1098 default:
1099 error = ENOTTY;
1100 }
1101 crit_exit();
1102
1103 out:
1104 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1105 if (blocked)
1106 si_write_enable(pp, 1);
1107 return(error);
1108 }
1109
1110 /*
1111 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1112 */
1113 static int
1114 si_Sioctl(cdev_t dev, u_long cmd, caddr_t data, int flag, struct ucred *cred)
1115 {
1116 struct si_softc *xsc;
1117 struct si_port *xpp;
1118 volatile struct si_reg *regp;
1119 struct si_tcsi *dp;
1120 struct si_pstat *sps;
1121 int *ip, error = 0;
1122 int card, port;
1123 int mynor = minor(dev);
1124
1125 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1126 devtoname(dev), cmd, data, flag));
1127
1128 #if 1
1129 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT));
1130 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB));
1131 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY));
1132 #endif
1133
1134 if (!IS_CONTROLDEV(mynor)) {
1135 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1136 return(ENODEV);
1137 }
1138
1139 crit_enter(); /* better safe than sorry */
1140
1141 ip = (int *)data;
1142
1143 #define SUCHECK if ((error = priv_check_cred(cred, PRIV_ROOT, 0))) goto out
1144
1145 switch (cmd) {
1146 case TCSIPORTS:
1147 *ip = si_Nports;
1148 goto out;
1149 case TCSIMODULES:
1150 *ip = si_Nmodules;
1151 goto out;
1152 case TCSISDBG_ALL:
1153 SUCHECK;
1154 si_debug = *ip;
1155 goto out;
1156 case TCSIGDBG_ALL:
1157 *ip = si_debug;
1158 goto out;
1159 default:
1160 /*
1161 * Check that a controller for this port exists
1162 */
1163
1164 /* may also be a struct si_pstat, a superset of si_tcsi */
1165
1166 dp = (struct si_tcsi *)data;
1167 sps = (struct si_pstat *)data;
1168 card = dp->tc_card;
1169 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1170 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1171 error = ENOENT;
1172 goto out;
1173 }
1174 /*
1175 * And check that a port exists
1176 */
1177 port = dp->tc_port;
1178 if (port < 0 || port >= xsc->sc_nport) {
1179 error = ENOENT;
1180 goto out;
1181 }
1182 xpp = xsc->sc_ports + port;
1183 regp = (struct si_reg *)xsc->sc_maddr;
1184 }
1185
1186 switch (cmd) {
1187 case TCSIDEBUG:
1188 #ifdef SI_DEBUG
1189 SUCHECK;
1190 if (xpp->sp_debug)
1191 xpp->sp_debug = 0;
1192 else {
1193 xpp->sp_debug = DBG_ALL;
1194 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1195 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1196 }
1197 break;
1198 #else
1199 error = ENODEV;
1200 goto out;
1201 #endif
1202 case TCSISDBG_LEVEL:
1203 case TCSIGDBG_LEVEL:
1204 #ifdef SI_DEBUG
1205 if (cmd == TCSIGDBG_LEVEL) {
1206 dp->tc_dbglvl = xpp->sp_debug;
1207 } else {
1208 SUCHECK;
1209 xpp->sp_debug = dp->tc_dbglvl;
1210 }
1211 break;
1212 #else
1213 error = ENODEV;
1214 goto out;
1215 #endif
1216 case TCSIGRXIT:
1217 dp->tc_int = regp->rx_int_count;
1218 break;
1219 case TCSIRXIT:
1220 SUCHECK;
1221 regp->rx_int_count = dp->tc_int;
1222 break;
1223 case TCSIGIT:
1224 dp->tc_int = regp->int_count;
1225 break;
1226 case TCSIIT:
1227 SUCHECK;
1228 regp->int_count = dp->tc_int;
1229 break;
1230 case TCSISTATE:
1231 dp->tc_int = xpp->sp_ccb->hi_ip;
1232 break;
1233 /* these next three use a different structure */
1234 case TCSI_PORT:
1235 SUCHECK;
1236 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1237 break;
1238 case TCSI_CCB:
1239 SUCHECK;
1240 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1241 break;
1242 case TCSI_TTY:
1243 SUCHECK;
1244 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1245 break;
1246 default:
1247 error = EINVAL;
1248 goto out;
1249 }
1250 out:
1251 crit_exit();
1252 return(error); /* success */
1253 }
1254
1255 /*
1256 * siparam() : Configure line params
1257 * called at spltty();
1258 * this may sleep, does not flush, nor wait for drain, nor block writes
1259 * caller must arrange this if it's important..
1260 */
1261 static int
1262 siparam(struct tty *tp, struct termios *t)
1263 {
1264 struct si_port *pp = TP2PP(tp);
1265 volatile struct si_channel *ccbp;
1266 int cflag, iflag, oflag, lflag;
1267 int error = 0; /* shutup gcc */
1268 int ispeed = 0; /* shutup gcc */
1269 int ospeed = 0; /* shutup gcc */
1270 BYTE val;
1271
1272 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1273 cflag = t->c_cflag;
1274 iflag = t->c_iflag;
1275 oflag = t->c_oflag;
1276 lflag = t->c_lflag;
1277 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1278 oflag, cflag, iflag, lflag));
1279
1280 /* XXX - if Jet host and SXDC module, use extended baud rates */
1281
1282 /* if not hung up.. */
1283 if (t->c_ospeed != 0) {
1284 /* translate baud rate to firmware values */
1285 ospeed = ttspeedtab(t->c_ospeed, bdrates);
1286 ispeed = t->c_ispeed ?
1287 ttspeedtab(t->c_ispeed, bdrates) : ospeed;
1288
1289 /* enforce legit baud rate */
1290 if (ospeed < 0 || ispeed < 0)
1291 return (EINVAL);
1292 }
1293
1294 crit_enter();
1295
1296 ccbp = pp->sp_ccb;
1297
1298 /* ========== set hi_break ========== */
1299 val = 0;
1300 if (iflag & IGNBRK) /* Breaks */
1301 val |= BR_IGN;
1302 if (iflag & BRKINT) /* Interrupt on break? */
1303 val |= BR_INT;
1304 if (iflag & PARMRK) /* Parity mark? */
1305 val |= BR_PARMRK;
1306 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1307 val |= BR_PARIGN;
1308 ccbp->hi_break = val;
1309
1310 /* ========== set hi_csr ========== */
1311 /* if not hung up.. */
1312 if (t->c_ospeed != 0) {
1313 /* Set I/O speeds */
1314 val = (ispeed << 4) | ospeed;
1315 }
1316 ccbp->hi_csr = val;
1317
1318 /* ========== set hi_mr2 ========== */
1319 val = 0;
1320 if (cflag & CSTOPB) /* Stop bits */
1321 val |= MR2_2_STOP;
1322 else
1323 val |= MR2_1_STOP;
1324 /*
1325 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1326 * a DCE, hence the reverse sense of RTS and CTS
1327 */
1328 /* Output Flow - RTS must be raised before data can be sent */
1329 if (cflag & CCTS_OFLOW)
1330 val |= MR2_RTSCONT;
1331
1332 ccbp->hi_mr2 = val;
1333
1334 /* ========== set hi_mr1 ========== */
1335 val = 0;
1336 if (!(cflag & PARENB)) /* Parity */
1337 val |= MR1_NONE;
1338 else
1339 val |= MR1_WITH;
1340 if (cflag & PARODD)
1341 val |= MR1_ODD;
1342
1343 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1344 val |= MR1_8_BITS;
1345 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1346 val |= MR1_7_BITS;
1347 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1348 val |= MR1_6_BITS;
1349 } else { /* Must be 5 */
1350 val |= MR1_5_BITS;
1351 }
1352 /*
1353 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1354 * a DCE, hence the reverse sense of RTS and CTS
1355 */
1356 /* Input Flow - CTS is raised when port is ready to receive data */
1357 if (cflag & CRTS_IFLOW)
1358 val |= MR1_CTSCONT;
1359
1360 ccbp->hi_mr1 = val;
1361
1362 /* ========== set hi_mask ========== */
1363 val = 0xff;
1364 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1365 val &= 0xFF;
1366 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1367 val &= 0x7F;
1368 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1369 val &= 0x3F;
1370 } else { /* Must be 5 */
1371 val &= 0x1F;
1372 }
1373 if (iflag & ISTRIP)
1374 val &= 0x7F;
1375
1376 ccbp->hi_mask = val;
1377
1378 /* ========== set hi_prtcl ========== */
1379 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1380 if (iflag & IXANY)
1381 val |= SP_TANY;
1382 if (iflag & IXON)
1383 val |= SP_TXEN;
1384 if (iflag & IXOFF)
1385 val |= SP_RXEN;
1386 if (iflag & INPCK)
1387 val |= SP_PAEN;
1388
1389 ccbp->hi_prtcl = val;
1390
1391
1392 /* ========== set hi_{rx|tx}{on|off} ========== */
1393 /* XXX: the card TOTALLY shields us from the flow control... */
1394 ccbp->hi_txon = t->c_cc[VSTART];
1395 ccbp->hi_txoff = t->c_cc[VSTOP];
1396
1397 ccbp->hi_rxon = t->c_cc[VSTART];
1398 ccbp->hi_rxoff = t->c_cc[VSTOP];
1399
1400 /* ========== send settings to the card ========== */
1401 /* potential sleep here */
1402 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */
1403 si_command(pp, LOPEN, SI_WAIT); /* open it */
1404 else
1405 si_command(pp, CONFIG, SI_WAIT); /* change params */
1406
1407 /* ========== set DTR etc ========== */
1408 /* Hangup if ospeed == 0 */
1409 if (t->c_ospeed == 0) {
1410 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
1411 } else {
1412 /*
1413 * If the previous speed was 0, may need to re-enable
1414 * the modem signals
1415 */
1416 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1417 }
1418
1419 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n",
1420 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break));
1421
1422 crit_exit();
1423 return(error);
1424 }
1425
1426 /*
1427 * Enable or Disable the writes to this channel...
1428 * "state" -> enabled = 1; disabled = 0;
1429 */
1430 static void
1431 si_write_enable(struct si_port *pp, int state)
1432 {
1433
1434 crit_enter();
1435
1436 if (state) {
1437 pp->sp_state &= ~SS_BLOCKWRITE;
1438 if (pp->sp_state & SS_WAITWRITE) {
1439 pp->sp_state &= ~SS_WAITWRITE;
1440 /* thunder away! */
1441 wakeup((caddr_t)pp);
1442 }
1443 } else {
1444 pp->sp_state |= SS_BLOCKWRITE;
1445 }
1446
1447 crit_exit();
1448 }
1449
1450 /*
1451 * Set/Get state of modem control lines.
1452 * Due to DCE-like behaviour of the adapter, some signals need translation:
1453 * TIOCM_DTR DSR
1454 * TIOCM_RTS CTS
1455 */
1456 static int
1457 si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1458 {
1459 volatile struct si_channel *ccbp;
1460 int x;
1461
1462 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits));
1463 ccbp = pp->sp_ccb; /* Find channel address */
1464 switch (cmd) {
1465 case GET:
1466 x = ccbp->hi_ip;
1467 bits = TIOCM_LE;
1468 if (x & IP_DCD) bits |= TIOCM_CAR;
1469 if (x & IP_DTR) bits |= TIOCM_DTR;
1470 if (x & IP_RTS) bits |= TIOCM_RTS;
1471 if (x & IP_RI) bits |= TIOCM_RI;
1472 return(bits);
1473 case SET:
1474 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1475 /* fall through */
1476 case BIS:
1477 x = 0;
1478 if (bits & TIOCM_DTR)
1479 x |= OP_DSR;
1480 if (bits & TIOCM_RTS)
1481 x |= OP_CTS;
1482 ccbp->hi_op |= x;
1483 break;
1484 case BIC:
1485 if (bits & TIOCM_DTR)
1486 ccbp->hi_op &= ~OP_DSR;
1487 if (bits & TIOCM_RTS)
1488 ccbp->hi_op &= ~OP_CTS;
1489 }
1490 return 0;
1491 }
1492
1493 /*
1494 * Handle change of modem state
1495 */
1496 static void
1497 si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1498 {
1499 /* if a modem dev */
1500 if (hi_ip & IP_DCD) {
1501 if (!(pp->sp_last_hi_ip & IP_DCD)) {
1502 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n",
1503 tp->t_line));
1504 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1505 }
1506 } else {
1507 if (pp->sp_last_hi_ip & IP_DCD) {
1508 DPRINT((pp, DBG_INTR, "modem carr off\n"));
1509 if ((*linesw[tp->t_line].l_modem)(tp, 0))
1510 (void) si_modem(pp, SET, 0);
1511 }
1512 }
1513 pp->sp_last_hi_ip = hi_ip;
1514
1515 }
1516
1517 /*
1518 * Poller to catch missed interrupts.
1519 *
1520 * Note that the SYSV Specialix drivers poll at 100 times per second to get
1521 * better response. We could really use a "periodic" version timeout(). :-)
1522 */
1523 #ifdef POLL
1524 static void
1525 si_poll(void *nothing)
1526 {
1527 struct si_softc *sc;
1528 int i;
1529 volatile struct si_reg *regp;
1530 struct si_port *pp;
1531 int lost, port;
1532
1533 DPRINT((0, DBG_POLL, "si_poll()\n"));
1534 crit_enter();
1535 if (in_intr)
1536 goto out;
1537 lost = 0;
1538 for (i = 0; i < si_numunits; i++) {
1539 sc = devclass_get_softc(si_devclass, i);
1540 if (sc == NULL || sc->sc_type == SIEMPTY)
1541 continue;
1542 regp = (struct si_reg *)sc->sc_maddr;
1543
1544 /*
1545 * See if there has been a pending interrupt for 2 seconds
1546 * or so. The test (int_scounter >= 200) won't correspond
1547 * to 2 seconds if int_count gets changed.
1548 */
1549 if (regp->int_pending != 0) {
1550 if (regp->int_scounter >= 200 &&
1551 regp->initstat == 1) {
1552 kprintf("si%d: lost intr\n", i);
1553 lost++;
1554 }
1555 } else {
1556 regp->int_scounter = 0;
1557 }
1558
1559 /*
1560 * gripe about no input flow control..
1561 */
1562 pp = sc->sc_ports;
1563 for (port = 0; port < sc->sc_nport; pp++, port++) {
1564 if (pp->sp_delta_overflows > 0) {
1565 kprintf("si%d: %d tty level buffer overflows\n",
1566 i, pp->sp_delta_overflows);
1567 pp->sp_delta_overflows = 0;
1568 }
1569 }
1570 }
1571 if (lost || si_realpoll)
1572 si_intr(NULL); /* call intr with fake vector */
1573 out:
1574 crit_exit();
1575
1576 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
1577 }
1578 #endif /* ifdef POLL */
1579
1580 /*
1581 * The interrupt handler polls ALL ports on ALL adapters each time
1582 * it is called.
1583 */
1584
1585 static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1586 static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1587
1588 void
1589 si_intr(void *arg)
1590 {
1591 struct si_softc *sc;
1592 struct si_port *pp;
1593 volatile struct si_channel *ccbp;
1594 struct tty *tp;
1595 volatile caddr_t maddr;
1596 BYTE op, ip;
1597 int x, card, port, n, i, isopen;
1598 volatile BYTE *z;
1599 BYTE c;
1600
1601 sc = arg;
1602
1603 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1604 if (in_intr)
1605 return;
1606 in_intr = 1;
1607
1608 /*
1609 * When we get an int we poll all the channels and do ALL pending
1610 * work, not just the first one we find. This allows all cards to
1611 * share the same vector.
1612 *
1613 * XXX - But if we're sharing the vector with something that's NOT
1614 * a SI/XIO/SX card, we may be making more work for ourselves.
1615 */
1616 for (card = 0; card < si_numunits; card++) {
1617 sc = devclass_get_softc(si_devclass, card);
1618 if (sc == NULL || sc->sc_type == SIEMPTY)
1619 continue;
1620
1621 /*
1622 * First, clear the interrupt
1623 */
1624 switch(sc->sc_type) {
1625 case SIHOST:
1626 maddr = sc->sc_maddr;
1627 ((volatile struct si_reg *)maddr)->int_pending = 0;
1628 /* flag nothing pending */
1629 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */
1630 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */
1631 break;
1632 case SIHOST2:
1633 maddr = sc->sc_maddr;
1634 ((volatile struct si_reg *)maddr)->int_pending = 0;
1635 *(maddr+SIPLIRQCLR) = 0x00;
1636 *(maddr+SIPLIRQCLR) = 0x10;
1637 break;
1638 case SIPCI:
1639 maddr = sc->sc_maddr;
1640 ((volatile struct si_reg *)maddr)->int_pending = 0;
1641 *(maddr+SIPCIINTCL) = 0x0;
1642 break;
1643 case SIJETPCI: /* fall through to JETISA case */
1644 case SIJETISA:
1645 maddr = sc->sc_maddr;
1646 ((volatile struct si_reg *)maddr)->int_pending = 0;
1647 *(maddr+SIJETINTCL) = 0x0;
1648 break;
1649 case SIEISA:
1650 maddr = sc->sc_maddr;
1651 ((volatile struct si_reg *)maddr)->int_pending = 0;
1652 (void)inb(sc->sc_iobase + 3);
1653 break;
1654 case SIEMPTY:
1655 default:
1656 continue;
1657 }
1658 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1659
1660 /*
1661 * check each port
1662 */
1663 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1664 pp++, port++) {
1665 ccbp = pp->sp_ccb;
1666 tp = pp->sp_tty;
1667
1668 /*
1669 * See if a command has completed ?
1670 */
1671 if (ccbp->hi_stat != pp->sp_pend) {
1672 DPRINT((pp, DBG_INTR,
1673 "si_intr hi_stat = 0x%x, pend = %d\n",
1674 ccbp->hi_stat, pp->sp_pend));
1675 switch(pp->sp_pend) {
1676 case LOPEN:
1677 case MPEND:
1678 case MOPEN:
1679 case CONFIG:
1680 case SBREAK:
1681 case EBREAK:
1682 pp->sp_pend = ccbp->hi_stat;
1683 /* sleeping in si_command */
1684 wakeup(&pp->sp_state);
1685 break;
1686 default:
1687 pp->sp_pend = ccbp->hi_stat;
1688 }
1689 }
1690
1691 /*
1692 * Continue on if it's closed
1693 */
1694 if (ccbp->hi_stat == IDLE_CLOSE) {
1695 continue;
1696 }
1697
1698 /*
1699 * Do modem state change if not a local device
1700 */
1701 si_modem_state(pp, tp, ccbp->hi_ip);
1702
1703 /*
1704 * Check to see if we should 'receive' characters.
1705 */
1706 if (tp->t_state & TS_CONNECTED &&
1707 tp->t_state & TS_ISOPEN)
1708 isopen = 1;
1709 else
1710 isopen = 0;
1711
1712 /*
1713 * Do input break processing
1714 */
1715 if (ccbp->hi_state & ST_BREAK) {
1716 if (isopen) {
1717 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1718 }
1719 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1720 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1721 }
1722
1723 /*
1724 * Do RX stuff - if not open then dump any characters.
1725 * XXX: This is VERY messy and needs to be cleaned up.
1726 *
1727 * XXX: can we leave data in the host adapter buffer
1728 * when the clists are full? That may be dangerous
1729 * if the user cannot get an interrupt signal through.
1730 */
1731
1732 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1733
1734 if (!isopen) {
1735 ccbp->hi_rxopos = ccbp->hi_rxipos;
1736 goto end_rx;
1737 }
1738
1739 /*
1740 * If the tty input buffers are blocked, stop emptying
1741 * the incoming buffers and let the auto flow control
1742 * assert..
1743 */
1744 if (tp->t_state & TS_TBLOCK) {
1745 goto end_rx;
1746 }
1747
1748 /*
1749 * Process read characters if not skipped above
1750 */
1751 op = ccbp->hi_rxopos;
1752 ip = ccbp->hi_rxipos;
1753 c = ip - op;
1754 if (c == 0) {
1755 goto end_rx;
1756 }
1757
1758 n = c & 0xff;
1759 if (n > 250)
1760 n = 250;
1761
1762 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1763 n, op, ip));
1764
1765 /*
1766 * Suck characters out of host card buffer into the
1767 * "input staging buffer" - so that we dont leave the
1768 * host card in limbo while we're possibly echoing
1769 * characters and possibly flushing input inside the
1770 * ldisc l_rint() routine.
1771 */
1772 if (n <= SI_BUFFERSIZE - op) {
1773
1774 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1775 z = ccbp->hi_rxbuf + op;
1776 si_vbcopy(z, si_rxbuf, n);
1777
1778 op += n;
1779 } else {
1780 x = SI_BUFFERSIZE - op;
1781
1782 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1783 z = ccbp->hi_rxbuf + op;
1784 si_vbcopy(z, si_rxbuf, x);
1785
1786 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1787 n - x));
1788 z = ccbp->hi_rxbuf;
1789 si_vbcopy(z, si_rxbuf + x, n - x);
1790
1791 op += n;
1792 }
1793
1794 /* clear collected characters from buffer */
1795 ccbp->hi_rxopos = op;
1796
1797 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1798 n, op, ip));
1799
1800 /*
1801 * at this point...
1802 * n = number of chars placed in si_rxbuf
1803 */
1804
1805 /*
1806 * Avoid the grotesquely inefficient lineswitch
1807 * routine (ttyinput) in "raw" mode. It usually
1808 * takes about 450 instructions (that's without
1809 * canonical processing or echo!). slinput is
1810 * reasonably fast (usually 40 instructions
1811 * plus call overhead).
1812 */
1813 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1814
1815 /* block if the driver supports it */
1816 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER &&
1817 (tp->t_cflag & CRTS_IFLOW ||
1818 tp->t_iflag & IXOFF) &&
1819 !(tp->t_state & TS_TBLOCK))
1820 ttyblock(tp);
1821
1822 tk_nin += n;
1823 tk_rawcc += n;
1824 tp->t_rawcc += n;
1825
1826 pp->sp_delta_overflows +=
1827 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1828
1829 ttwakeup(tp);
1830 if (tp->t_state & TS_TTSTOP &&
1831 (tp->t_iflag & IXANY ||
1832 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) {
1833 tp->t_state &= ~TS_TTSTOP;
1834 tp->t_lflag &= ~FLUSHO;
1835 si_start(tp);
1836 }
1837 } else {
1838 /*
1839 * It'd be nice to not have to go through the
1840 * function call overhead for each char here.
1841 * It'd be nice to block input it, saving a
1842 * loop here and the call/return overhead.
1843 */
1844 for(x = 0; x < n; x++) {
1845 i = si_rxbuf[x];
1846 if ((*linesw[tp->t_line].l_rint)(i, tp)
1847 == -1) {
1848 pp->sp_delta_overflows++;
1849 }
1850 /*
1851 * doesn't seem to be much point doing
1852 * this here.. this driver has no
1853 * softtty processing! ??
1854 */
1855 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1856 setsofttty();
1857 }
1858 }
1859 }
1860 goto more_rx; /* try for more until RXbuf is empty */
1861
1862 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1863
1864 /*
1865 * Do TX stuff
1866 */
1867 (*linesw[tp->t_line].l_start)(tp);
1868
1869 } /* end of for (all ports on this controller) */
1870 } /* end of for (all controllers) */
1871
1872 in_intr = 0;
1873 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1874 }
1875
1876 /*
1877 * Nudge the transmitter...
1878 *
1879 * XXX: I inherited some funny code here. It implies the host card only
1880 * interrupts when the transmit buffer reaches the low-water-mark, and does
1881 * not interrupt when it's actually hits empty. In some cases, we have
1882 * processes waiting for complete drain, and we need to simulate an interrupt
1883 * about when we think the buffer is going to be empty (and retry if not).
1884 * I really am not certain about this... I *need* the hardware manuals.
1885 */
1886 static void
1887 si_start(struct tty *tp)
1888 {
1889 struct si_port *pp;
1890 volatile struct si_channel *ccbp;
1891 struct clist *qp;
1892 BYTE ipos;
1893 int nchar;
1894 int count, n, amount, buffer_full;
1895
1896 crit_enter();
1897
1898 qp = &tp->t_outq;
1899 pp = TP2PP(tp);
1900
1901 DPRINT((pp, DBG_ENTRY|DBG_START,
1902 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n",
1903 tp, tp->t_state, pp->sp_state, qp->c_cc));
1904
1905 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1906 goto out;
1907
1908 buffer_full = 0;
1909 ccbp = pp->sp_ccb;
1910
1911 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1912 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1913
1914 while ((nchar = qp->c_cc) > 0) {
1915 if ((BYTE)count >= 255) {
1916 buffer_full++;
1917 break;
1918 }
1919 amount = min(nchar, (255 - (BYTE)count));
1920 ipos = (unsigned int)ccbp->hi_txipos;
1921 n = q_to_b(&tp->t_outq, si_txbuf, amount);
1922 /* will it fit in one lump? */
1923 if ((SI_BUFFERSIZE - ipos) >= n) {
1924 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n);
1925 } else {
1926 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos],
1927 SI_BUFFERSIZE - ipos);
1928 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos),
1929 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos));
1930 }
1931 ccbp->hi_txipos += n;
1932 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1933 }
1934
1935 if (count != 0 && nchar == 0) {
1936 tp->t_state |= TS_BUSY;
1937 } else {
1938 tp->t_state &= ~TS_BUSY;
1939 }
1940
1941 /* wakeup time? */
1942 ttwwakeup(tp);
1943
1944 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1945 (BYTE)count, nchar, tp->t_state));
1946
1947 if (tp->t_state & TS_BUSY)
1948 {
1949 int time;
1950
1951 time = ttspeedtab(tp->t_ospeed, chartimes);
1952
1953 if (time > 0) {
1954 if (time < nchar)
1955 time = nchar / time;
1956 else
1957 time = 2;
1958 } else {
1959 DPRINT((pp, DBG_START,
1960 "bad char time value! %d\n", time));
1961 time = hz/10;
1962 }
1963
1964 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
1965 callout_stop(&pp->lstart_ch);
1966 } else {
1967 pp->sp_state |= SS_LSTART;
1968 }
1969 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
1970 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
1971 }
1972
1973 out:
1974 crit_exit();
1975 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1976 }
1977
1978 /*
1979 * Note: called at splsoftclock from the timeout code
1980 * This has to deal with two things... cause wakeups while waiting for
1981 * tty drains on last process exit, and call l_start at about the right
1982 * time for protocols like ppp.
1983 */
1984 static void
1985 si_lstart(void *arg)
1986 {
1987 struct si_port *pp = arg;
1988 struct tty *tp;
1989
1990 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1991 pp, pp->sp_state));
1992
1993 crit_enter();
1994
1995 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
1996 crit_exit();
1997 return;
1998 }
1999 pp->sp_state &= ~SS_LSTART;
2000 pp->sp_state |= SS_INLSTART;
2001
2002 tp = pp->sp_tty;
2003
2004 /* deal with the process exit case */
2005 ttwwakeup(tp);
2006
2007 /* nudge protocols - eg: ppp */
2008 (*linesw[tp->t_line].l_start)(tp);
2009
2010 pp->sp_state &= ~SS_INLSTART;
2011 crit_exit();
2012 }
2013
2014 /*
2015 * Stop output on a line. called at spltty();
2016 */
2017 void
2018 si_stop(struct tty *tp, int rw)
2019 {
2020 volatile struct si_channel *ccbp;
2021 struct si_port *pp;
2022
2023 pp = TP2PP(tp);
2024 ccbp = pp->sp_ccb;
2025
2026 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2027
2028 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2029 if (rw & FWRITE) {
2030 /* what level are we meant to be flushing anyway? */
2031 if (tp->t_state & TS_BUSY) {
2032 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT);
2033 tp->t_state &= ~TS_BUSY;
2034 ttwwakeup(tp); /* Bruce???? */
2035 }
2036 }
2037 #if 1 /* XXX: this doesn't work right yet.. */
2038 /* XXX: this may have been failing because we used to call l_rint()
2039 * while we were looping based on these two counters. Now, we collect
2040 * the data and then loop stuffing it into l_rint(), making this
2041 * useless. Should we cause this to blow away the staging buffer?
2042 */
2043 if (rw & FREAD) {
2044 ccbp->hi_rxopos = ccbp->hi_rxipos;
2045 }
2046 #endif
2047 }
2048
2049 /*
2050 * Issue a command to the host card CPU.
2051 */
2052
2053 static void
2054 si_command(struct si_port *pp, int cmd, int waitflag)
2055 {
2056 volatile struct si_channel *ccbp = pp->sp_ccb;
2057 int x;
2058
2059 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2060 pp, cmd, waitflag, ccbp->hi_stat));
2061
2062 crit_enter(); /* Keep others out */
2063
2064 /* wait until it's finished what it was doing.. */
2065 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2066 * is turned off. */
2067 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2068 x != IDLE_CLOSE &&
2069 x != IDLE_BREAK &&
2070 x != cmd) {
2071 if (in_intr) { /* Prevent sleep in intr */
2072 DPRINT((pp, DBG_PARAM,
2073 "cmd intr collision - completing %d\trequested %d\n",
2074 x, cmd));
2075 crit_exit();
2076 return;
2077 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2078 "sicmd1", 1)) {
2079 crit_exit();
2080 return;
2081 }
2082 }
2083 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2084
2085 /* if there was a pending command, cause a state-change wakeup */
2086 switch(pp->sp_pend) {
2087 case LOPEN:
2088 case MPEND:
2089 case MOPEN:
2090 case CONFIG:
2091 case SBREAK:
2092 case EBREAK:
2093 wakeup(&pp->sp_state);
2094 break;
2095 default:
2096 break;
2097 }
2098
2099 pp->sp_pend = cmd; /* New command pending */
2100 ccbp->hi_stat = cmd; /* Post it */
2101
2102 if (waitflag) {
2103 if (in_intr) { /* If in interrupt handler */
2104 DPRINT((pp, DBG_PARAM,
2105 "attempt to sleep in si_intr - cmd req %d\n",
2106 cmd));
2107 crit_exit();
2108 return;
2109 } else while(ccbp->hi_stat != IDLE_OPEN &&
2110 ccbp->hi_stat != IDLE_BREAK) {
2111 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
2112 "sicmd2", 0))
2113 break;
2114 }
2115 }
2116 crit_exit();
2117 }
2118
2119 static void
2120 si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2121 {
2122 /*
2123 * XXX can skip a lot more cases if Smarts. Maybe
2124 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we
2125 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state.
2126 */
2127 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) &&
2128 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) &&
2129 (!(t->c_iflag & PARMRK) ||
2130 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) &&
2131 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) &&
2132 linesw[tp->t_line].l_rint == ttyinput)
2133 tp->t_state |= TS_CAN_BYPASS_L_RINT;
2134 else
2135 tp->t_state &= ~TS_CAN_BYPASS_L_RINT;
2136 pp->sp_hotchar = linesw[tp->t_line].l_hotchar;
2137 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n",
2138 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off",
2139 pp->sp_hotchar));
2140 }
2141
2142
2143 #ifdef SI_DEBUG
2144
2145 void
2146 si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2147 {
2148 __va_list ap;
2149
2150 if ((pp == NULL && (si_debug&flags)) ||
2151 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2152 if (pp != NULL)
2153 kprintf("%ci%d(%d): ", 's',
2154 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2155 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
2156 __va_start(ap, fmt);
2157 kvprintf(fmt, ap);
2158 __va_end(ap);
2159 }
2160 }
2161
2162 static char *
2163 si_mctl2str(enum si_mctl cmd)
2164 {
2165 switch (cmd) {
2166 case GET:
2167 return("GET");
2168 case SET:
2169 return("SET");
2170 case BIS:
2171 return("BIS");
2172 case BIC:
2173 return("BIC");
2174 }
2175 return("BAD");
2176 }
2177
2178 #endif /* DEBUG */
2179
2180 static char *
2181 si_modulename(int host_type, int uart_type)
2182 {
2183 switch (host_type) {
2184 /* Z280 based cards */
2185 case SIEISA:
2186 case SIHOST2:
2187 case SIHOST:
2188 case SIPCI:
2189 switch (uart_type) {
2190 case 0:
2191 return(" (XIO)");
2192 case 1:
2193 return(" (SI)");
2194 }
2195 break;
2196 /* T225 based hosts */
2197 case SIJETPCI:
2198 case SIJETISA:
2199 switch (uart_type) {
2200 case 0:
2201 return(" (SI)");
2202 case 40:
2203 return(" (XIO)");
2204 case 72:
2205 return(" (SXDC)");
2206 }
2207 break;
2208 }
2209 return("");
2210 }
DragonFly BSD