kernel - Remove D_KQFILTER flag
[dragonfly.git] / sys / dev / serial / si / si.c
CommitLineData
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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 $
e3869ec7 34 * $DragonFly: src/sys/dev/serial/si/si.c,v 1.23 2006/12/22 23:26:24 swildner Exp $
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35 */
36
37#ifndef lint
38static 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>
895c1f85 53#include <sys/priv.h>
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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>
984263bc 61#include <sys/rman.h>
1f7ab7c9 62#include <sys/thread2.h>
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63
64#include <machine/clock.h>
65
66#include <vm/vm.h>
67#include <vm/pmap.h>
68
69#include <machine/stdarg.h>
70
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71#include "sireg.h"
72#include "sivar.h"
73#include "si.h"
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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
94enum si_mctl { GET, SET, BIS, BIC };
95
96static void si_command(struct si_port *, int, int);
97static int si_modem(struct si_port *, enum si_mctl, int);
98static void si_write_enable(struct si_port *, int);
b13267a5 99static int si_Sioctl(cdev_t, u_long, caddr_t, int, struct ucred *);
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100static void si_start(struct tty *);
101static void si_stop(struct tty *, int);
102static timeout_t si_lstart;
103static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp);
104static void sihardclose(struct si_port *pp);
105static void sidtrwakeup(void *chan);
106
107#ifdef SI_DEBUG
108static char *si_mctl2str(enum si_mctl cmd);
109#endif
110
111static int siparam(struct tty *, struct termios *);
112
113static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip);
114static char * si_modulename(int host_type, int uart_type);
115
116static d_open_t siopen;
117static d_close_t siclose;
118static d_write_t siwrite;
119static d_ioctl_t siioctl;
120
121#define CDEV_MAJOR 68
fef8985e 122static struct dev_ops si_ops = {
d4b8aec4 123 { "si", CDEV_MAJOR, D_TTY },
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124 .d_open = siopen,
125 .d_close = siclose,
126 .d_read = ttyread,
127 .d_write = siwrite,
128 .d_ioctl = siioctl,
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129 .d_kqfilter = ttykqfilter,
130 .d_revoke = ttyrevoke
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131};
132
133static int si_Nports;
134static int si_Nmodules;
135static int si_debug = 0; /* data, not bss, so it's patchable */
136
137SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, "");
138
139static struct tty *si__tty;
140
141static int si_numunits;
9a5ed89e 142static struct callout poll_ch;
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143
144devclass_t si_devclass;
145
146#ifndef B2000 /* not standard, but the hardware knows it. */
147# define B2000 2000
148#endif
149static 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 */
170static int done_chartimes = 0;
171static 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};
188static volatile int in_intr = 0; /* Inside interrupt handler? */
189
190#ifdef POLL
191static int si_pollrate; /* in addition to irq */
192static int si_realpoll = 0; /* poll HW on timer */
193
194SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, "");
195SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, "");
196
197static int init_finished = 0;
198static 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 */
205static 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 */
220static void __inline
221si_bcopy(const void *src, void *dst, size_t len)
222{
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223 const uint8_t *src_byte = (const uint8_t *)src;
224 uint8_t *dst_byte = (uint8_t *)dst;
225
984263bc 226 while (len--)
7e2c1a6b 227 *dst_byte++ = *src_byte++;
984263bc 228}
7e2c1a6b 229
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230static void __inline
231si_vbcopy(const volatile void *src, void *dst, size_t len)
232{
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233 volatile const uint8_t *src_byte = (volatile const uint8_t *)src;
234 uint8_t *dst_byte = (uint8_t *)dst;
235
984263bc 236 while (len--)
7e2c1a6b 237 *dst_byte++ = *src_byte++;
984263bc 238}
7e2c1a6b 239
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240static void __inline
241si_bcopyv(const void *src, volatile void *dst, size_t len)
242{
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243 const uint8_t *src_byte = (const uint8_t *)src;
244 volatile uint8_t *dst_byte = (volatile uint8_t *)dst;
245
984263bc 246 while (len--)
7e2c1a6b 247 *dst_byte++ = *src_byte++;
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248}
249
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250/*
251 * Attach the device. Initialize the card.
252 */
253int
254siattach(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;
54607efb 267 int n;
984263bc 268
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269 if ((poll_ch.c_flags & CALLOUT_DID_INIT) == 0)
270 callout_init(&poll_ch);
271
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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 */
e3869ec7 317 kprintf("si%d: unsupported configuration\n", unit);
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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 */
e3869ec7 400 kprintf("si%d: Uh, it was supported a second ago...\n", unit);
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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:
e3869ec7 414 kprintf("si%d: startup timeout - aborting\n", unit);
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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 */
e3869ec7 435 kprintf("si%d: %s - no ports found\n", unit,
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436 si_type[sc->sc_type]);
437 return 0;
438 default:
e3869ec7 439 kprintf("si%d: download code version error - initstat %x\n",
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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:
e3869ec7 490 kprintf("si%d: unknown module type %d\n",
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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) {
e3869ec7 497 kprintf("si%d: extra ports ignored\n", unit);
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498 goto try_next;
499 }
500
501 nport += x;
502 si_Nports += x;
503 si_Nmodules++;
504
505try_next:
506 if (modp->sm_next == 0)
507 break;
508 modp = (struct si_module *)
509 (maddr + (unsigned)(modp->sm_next & 0x7fff));
510 }
77652cad 511 sc->sc_ports = kmalloc(sizeof(struct si_port) * nport,
20a0f9a3 512 M_DEVBUF, M_WAITOK | M_ZERO);
984263bc 513 sc->sc_nport = nport;
9a5ed89e 514 for (n = 0; n < nport; ++n) {
54607efb 515 callout_init(&sc->sc_ports[n].lstart_ch);
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516 callout_init(&sc->sc_ports[n].dtr_ch);
517 }
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518
519 /*
520 * allocate tty structures for ports
521 */
efda3bd0 522 tp = kmalloc(sizeof(*tp) * nport, M_DEVBUF, M_WAITOK | M_ZERO);
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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)
e3869ec7 560 kprintf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n",
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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 =
fc6d0222 577 TTYDEF_SPEED;
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578 pp->sp_iout = pp->sp_iin;
579 }
580try_next2:
581 if (modp->sm_next == 0) {
e3869ec7 582 kprintf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n",
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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
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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);
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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);
984263bc 611 }
fef8985e 612 make_dev(&si_ops, 0x40000, 0, 0, 0600, "si_control");
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613 return (0);
614}
615
616static int
fef8985e 617siopen(struct dev_open_args *ap)
984263bc 618{
b13267a5 619 cdev_t dev = ap->a_head.a_dev;
8d77660e 620 int error;
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621 int card, port;
622 struct si_softc *sc;
623 struct tty *tp;
624 volatile struct si_channel *ccbp;
625 struct si_port *pp;
626 int mynor = minor(dev);
627
628 /* quickly let in /dev/si_control */
629 if (IS_CONTROLDEV(mynor)) {
895c1f85 630 if ((error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0)))
984263bc
MD
631 return(error);
632 return(0);
633 }
634
635 card = SI_CARD(mynor);
636 sc = devclass_get_softc(si_devclass, card);
637 if (sc == NULL)
638 return (ENXIO);
639
640 if (sc->sc_type == SIEMPTY) {
641 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n",
642 card, sc->sc_typename));
643 return(ENXIO);
644 }
645
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));
650 return(ENXIO);
651 }
652
653#ifdef POLL
654 /*
655 * We've now got a device, so start the poller.
656 */
657 if (init_finished == 0) {
9a5ed89e 658 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD
659 init_finished = 1;
660 }
661#endif
662
663 /* initial/lock device */
664 if (IS_STATE(mynor)) {
665 return(0);
666 }
667
668 pp = sc->sc_ports + port;
669 tp = pp->sp_tty; /* the "real" tty */
670 dev->si_tty = tp;
671 ccbp = pp->sp_ccb; /* Find control block */
fef8985e
MD
672 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x)\n",
673 devtoname(dev), ap->a_oflags, ap->a_devtype));
984263bc 674
8d77660e 675 crit_enter(); /* Keep others out */
984263bc
MD
676 error = 0;
677
678open_top:
679 while (pp->sp_state & SS_DTR_OFF) {
377d4740 680 error = tsleep(&pp->sp_dtr_wait, PCATCH, "sidtr", 0);
984263bc
MD
681 if (error != 0)
682 goto out;
683 }
684
685 if (tp->t_state & TS_ISOPEN) {
686 /*
687 * The device is open, so everything has been initialised.
688 * handle conflicts.
689 */
690 if (IS_CALLOUT(mynor)) {
691 if (!pp->sp_active_out) {
692 error = EBUSY;
693 goto out;
694 }
695 } else {
696 if (pp->sp_active_out) {
fef8985e 697 if (ap->a_oflags & O_NONBLOCK) {
984263bc
MD
698 error = EBUSY;
699 goto out;
700 }
701 error = tsleep(&pp->sp_active_out,
377d4740 702 PCATCH, "sibi", 0);
984263bc
MD
703 if (error != 0)
704 goto out;
705 goto open_top;
706 }
707 }
708 if (tp->t_state & TS_XCLUDE &&
895c1f85 709 priv_check_cred(ap->a_cred, PRIV_ROOT, 0)) {
984263bc
MD
710 DPRINT((pp, DBG_OPEN|DBG_FAIL,
711 "already open and EXCLUSIVE set\n"));
712 error = EBUSY;
713 goto out;
714 }
715 } else {
716 /*
717 * The device isn't open, so there are no conflicts.
718 * Initialize it. Avoid sleep... :-)
719 */
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;
724 tp->t_dev = dev;
725 tp->t_termios = mynor & SI_CALLOUT_MASK
726 ? pp->sp_iout : pp->sp_iin;
727
728 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
729
730 ++pp->sp_wopeners; /* in case of sleep in siparam */
731
732 error = siparam(tp, &tp->t_termios);
733
734 --pp->sp_wopeners;
735 if (error != 0)
736 goto out;
737 /* XXX: we should goto_top if siparam slept */
738
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);
743 }
744 }
745
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;
750 }
751
752 /*
753 * Wait for DCD if necessary
754 */
755 if (!(tp->t_state & TS_CARR_ON) &&
756 !IS_CALLOUT(mynor) &&
757 !(tp->t_cflag & CLOCAL) &&
fef8985e 758 !(ap->a_oflags & O_NONBLOCK)) {
984263bc
MD
759 ++pp->sp_wopeners;
760 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n"));
377d4740 761 error = tsleep(TSA_CARR_ON(tp), PCATCH, "sidcd", 0);
984263bc
MD
762 --pp->sp_wopeners;
763 if (error != 0)
764 goto out;
765 goto open_top;
766 }
767
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;
772
773 pp->sp_state |= SS_OPEN; /* made it! */
774
775out:
8d77660e 776 crit_exit();
984263bc
MD
777
778 DPRINT((pp, DBG_OPEN, "leaving siopen\n"));
779
780 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0)
781 sihardclose(pp);
782
783 return(error);
784}
785
786static int
fef8985e 787siclose(struct dev_close_args *ap)
984263bc 788{
b13267a5 789 cdev_t dev = ap->a_head.a_dev;
984263bc
MD
790 struct si_port *pp;
791 struct tty *tp;
984263bc
MD
792 int error = 0;
793 int mynor = minor(dev);
794
795 if (IS_SPECIAL(mynor))
796 return(0);
797
8d77660e 798 crit_enter();
984263bc
MD
799
800 pp = MINOR2PP(mynor);
801 tp = pp->sp_tty;
802
fef8985e
MD
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));
984263bc
MD
805
806 /* did we sleep and loose a race? */
807 if (pp->sp_state & SS_CLOSING) {
808 /* error = ESOMETING? */
809 goto out;
810 }
811
812 /* begin race detection.. */
813 pp->sp_state |= SS_CLOSING;
814
815 si_write_enable(pp, 0); /* block writes for ttywait() */
816
817 /* THIS MAY SLEEP IN TTYWAIT!!! */
fef8985e 818 (*linesw[tp->t_line].l_close)(tp, ap->a_fflag);
984263bc
MD
819
820 si_write_enable(pp, 1);
821
822 /* did we sleep and somebody started another open? */
823 if (!(pp->sp_state & SS_CLOSING)) {
824 /* error = ESOMETING? */
825 goto out;
826 }
827 /* ok. we are now still on the right track.. nuke the hardware */
828
829 if (pp->sp_state & SS_LSTART) {
54607efb 830 callout_stop(&pp->lstart_ch);
984263bc
MD
831 pp->sp_state &= ~SS_LSTART;
832 }
833
834 si_stop(tp, FREAD | FWRITE);
835
836 sihardclose(pp);
837 ttyclose(tp);
838 pp->sp_state &= ~SS_OPEN;
839
840out:
841 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n"));
8d77660e 842 crit_exit();
984263bc
MD
843 return(error);
844}
845
846static void
847sihardclose(struct si_port *pp)
848{
984263bc
MD
849 struct tty *tp;
850 volatile struct si_channel *ccbp;
851
8d77660e 852 crit_enter();
984263bc
MD
853
854 tp = pp->sp_tty;
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) &&
d78296fa 859 !(pp->sp_iin.c_cflag & CLOCAL)) ||
984263bc
MD
860 !(tp->t_state & TS_ISOPEN)) {
861
862 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS);
863 (void) si_command(pp, FCLOSE, SI_NOWAIT);
864
865 if (pp->sp_dtr_wait != 0) {
9a5ed89e
MD
866 callout_reset(&pp->dtr_ch, pp->sp_dtr_wait,
867 sidtrwakeup, pp);
984263bc
MD
868 pp->sp_state |= SS_DTR_OFF;
869 }
870
871 }
872 pp->sp_active_out = FALSE;
873 wakeup((caddr_t)&pp->sp_active_out);
874 wakeup(TSA_CARR_ON(tp));
875
8d77660e 876 crit_exit();
984263bc
MD
877}
878
879
880/*
881 * called at splsoftclock()...
882 */
883static void
884sidtrwakeup(void *chan)
885{
886 struct si_port *pp;
984263bc 887
8d77660e 888 crit_enter();
984263bc
MD
889
890 pp = (struct si_port *)chan;
891 pp->sp_state &= ~SS_DTR_OFF;
892 wakeup(&pp->sp_dtr_wait);
893
8d77660e 894 crit_exit();
984263bc
MD
895}
896
897static int
fef8985e 898siwrite(struct dev_write_args *ap)
984263bc 899{
b13267a5 900 cdev_t dev = ap->a_head.a_dev;
984263bc
MD
901 struct si_port *pp;
902 struct tty *tp;
903 int error = 0;
904 int mynor = minor(dev);
984263bc
MD
905
906 if (IS_SPECIAL(mynor)) {
907 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n"));
908 return(ENODEV);
909 }
910 pp = MINOR2PP(mynor);
911 tp = pp->sp_tty;
fef8985e 912 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), ap->a_uio, ap->a_ioflag));
984263bc 913
8d77660e 914 crit_enter();
984263bc
MD
915 /*
916 * If writes are currently blocked, wait on the "real" tty
917 */
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"));
377d4740 921 if ((error = ttysleep(tp, (caddr_t)pp, PCATCH,
984263bc
MD
922 "siwrite", tp->t_timeout))) {
923 if (error == EWOULDBLOCK)
924 error = EIO;
925 goto out;
926 }
927 }
928
fef8985e 929 error = (*linesw[tp->t_line].l_write)(tp, ap->a_uio, ap->a_ioflag);
984263bc 930out:
8d77660e 931 crit_exit();
984263bc
MD
932 return (error);
933}
934
935
936static int
fef8985e 937siioctl(struct dev_ioctl_args *ap)
984263bc 938{
b13267a5 939 cdev_t dev = ap->a_head.a_dev;
fef8985e
MD
940 caddr_t data = ap->a_data;
941 u_long cmd = ap->a_cmd;
984263bc
MD
942 struct si_port *pp;
943 struct tty *tp;
944 int error;
945 int mynor = minor(dev);
984263bc
MD
946 int blocked = 0;
947#if defined(COMPAT_43)
948 u_long oldcmd;
949 struct termios term;
950#endif
951
952 if (IS_SI_IOCTL(cmd))
fef8985e 953 return(si_Sioctl(dev, cmd, data, ap->a_fflag, ap->a_cred));
984263bc
MD
954
955 pp = MINOR2PP(mynor);
956 tp = pp->sp_tty;
957
958 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n",
fef8985e 959 devtoname(dev), cmd, data, ap->a_fflag));
984263bc
MD
960 if (IS_STATE(mynor)) {
961 struct termios *ct;
962
963 switch (mynor & SI_STATE_MASK) {
964 case SI_INIT_STATE_MASK:
965 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin;
966 break;
967 case SI_LOCK_STATE_MASK:
968 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin;
969 break;
970 default:
971 return (ENODEV);
972 }
973 switch (cmd) {
974 case TIOCSETA:
895c1f85 975 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
984263bc
MD
976 if (error != 0)
977 return (error);
978 *ct = *(struct termios *)data;
979 return (0);
980 case TIOCGETA:
981 *(struct termios *)data = *ct;
982 return (0);
983 case TIOCGETD:
984 *(int *)data = TTYDISC;
985 return (0);
986 case TIOCGWINSZ:
987 bzero(data, sizeof(struct winsize));
988 return (0);
989 default:
990 return (ENOTTY);
991 }
992 }
993 /*
994 * Do the old-style ioctl compat routines...
995 */
996#if defined(COMPAT_43)
997 term = tp->t_termios;
998 oldcmd = cmd;
999 error = ttsetcompat(tp, &cmd, data, &term);
1000 if (error != 0)
1001 return (error);
1002 if (cmd != oldcmd)
1003 data = (caddr_t)&term;
1004#endif
1005 /*
1006 * Do the initial / lock state business
1007 */
1008 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) {
1009 int cc;
1010 struct termios *dt = (struct termios *)data;
1011 struct termios *lt = mynor & SI_CALLOUT_MASK
1012 ? &pp->sp_lout : &pp->sp_lin;
1013
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;
1029 }
1030
1031 /*
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.
1035 */
1036 switch (cmd) {
1037 case TIOCSETAW:
1038 case TIOCSETAF:
1039 case TIOCDRAIN:
1040#ifdef COMPAT_43
1041 case TIOCSETP:
1042#endif
1043 blocked++; /* block writes for ttywait() and siparam() */
1044 si_write_enable(pp, 0);
1045 }
1046
fef8985e
MD
1047 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data,
1048 ap->a_fflag, ap->a_cred);
984263bc
MD
1049 if (error != ENOIOCTL)
1050 goto out;
1051
8d77660e 1052 crit_enter();
984263bc 1053
fef8985e 1054 error = ttioctl(tp, cmd, data, ap->a_fflag);
984263bc
MD
1055 si_disc_optim(tp, &tp->t_termios, pp);
1056 if (error != ENOIOCTL) {
8d77660e 1057 crit_exit();
984263bc
MD
1058 goto out;
1059 }
1060
1061 error = 0;
1062 switch (cmd) {
1063 case TIOCSBRK:
1064 si_command(pp, SBREAK, SI_WAIT);
1065 break;
1066 case TIOCCBRK:
1067 si_command(pp, EBREAK, SI_WAIT);
1068 break;
1069 case TIOCSDTR:
1070 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1071 break;
1072 case TIOCCDTR:
1073 (void) si_modem(pp, SET, 0);
1074 break;
1075 case TIOCMSET:
1076 (void) si_modem(pp, SET, *(int *)data);
1077 break;
1078 case TIOCMBIS:
1079 (void) si_modem(pp, BIS, *(int *)data);
1080 break;
1081 case TIOCMBIC:
1082 (void) si_modem(pp, BIC, *(int *)data);
1083 break;
1084 case TIOCMGET:
1085 *(int *)data = si_modem(pp, GET, 0);
1086 break;
1087 case TIOCMSDTRWAIT:
1088 /* must be root since the wait applies to following logins */
895c1f85 1089 error = priv_check_cred(ap->a_cred, PRIV_ROOT, 0);
984263bc
MD
1090 if (error == 0)
1091 pp->sp_dtr_wait = *(int *)data * hz / 100;
1092 break;
1093 case TIOCMGDTRWAIT:
1094 *(int *)data = pp->sp_dtr_wait * 100 / hz;
1095 break;
1096 default:
1097 error = ENOTTY;
1098 }
8d77660e 1099 crit_exit();
984263bc
MD
1100
1101out:
1102 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error));
1103 if (blocked)
1104 si_write_enable(pp, 1);
1105 return(error);
1106}
1107
1108/*
1109 * Handle the Specialix ioctls. All MUST be called via the CONTROL device
1110 */
1111static int
b13267a5 1112si_Sioctl(cdev_t dev, u_long cmd, caddr_t data, int flag, struct ucred *cred)
984263bc
MD
1113{
1114 struct si_softc *xsc;
1115 struct si_port *xpp;
1116 volatile struct si_reg *regp;
1117 struct si_tcsi *dp;
1118 struct si_pstat *sps;
1119 int *ip, error = 0;
984263bc
MD
1120 int card, port;
1121 int mynor = minor(dev);
1122
1123 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n",
1124 devtoname(dev), cmd, data, flag));
1125
1126#if 1
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));
1130#endif
1131
1132 if (!IS_CONTROLDEV(mynor)) {
1133 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n"));
1134 return(ENODEV);
1135 }
1136
8d77660e 1137 crit_enter(); /* better safe than sorry */
984263bc
MD
1138
1139 ip = (int *)data;
1140
895c1f85 1141#define SUCHECK if ((error = priv_check_cred(cred, PRIV_ROOT, 0))) goto out
984263bc
MD
1142
1143 switch (cmd) {
1144 case TCSIPORTS:
1145 *ip = si_Nports;
1146 goto out;
1147 case TCSIMODULES:
1148 *ip = si_Nmodules;
1149 goto out;
1150 case TCSISDBG_ALL:
1151 SUCHECK;
1152 si_debug = *ip;
1153 goto out;
1154 case TCSIGDBG_ALL:
1155 *ip = si_debug;
1156 goto out;
1157 default:
1158 /*
1159 * Check that a controller for this port exists
1160 */
1161
1162 /* may also be a struct si_pstat, a superset of si_tcsi */
1163
1164 dp = (struct si_tcsi *)data;
1165 sps = (struct si_pstat *)data;
1166 card = dp->tc_card;
1167 xsc = devclass_get_softc(si_devclass, card); /* check.. */
1168 if (xsc == NULL || xsc->sc_type == SIEMPTY) {
1169 error = ENOENT;
1170 goto out;
1171 }
1172 /*
1173 * And check that a port exists
1174 */
1175 port = dp->tc_port;
1176 if (port < 0 || port >= xsc->sc_nport) {
1177 error = ENOENT;
1178 goto out;
1179 }
1180 xpp = xsc->sc_ports + port;
1181 regp = (struct si_reg *)xsc->sc_maddr;
1182 }
1183
1184 switch (cmd) {
1185 case TCSIDEBUG:
1186#ifdef SI_DEBUG
1187 SUCHECK;
1188 if (xpp->sp_debug)
1189 xpp->sp_debug = 0;
1190 else {
1191 xpp->sp_debug = DBG_ALL;
1192 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n",
1193 (xpp->sp_debug&DBG_ALL)?"ON":"OFF"));
1194 }
1195 break;
1196#else
1197 error = ENODEV;
1198 goto out;
1199#endif
1200 case TCSISDBG_LEVEL:
1201 case TCSIGDBG_LEVEL:
1202#ifdef SI_DEBUG
1203 if (cmd == TCSIGDBG_LEVEL) {
1204 dp->tc_dbglvl = xpp->sp_debug;
1205 } else {
1206 SUCHECK;
1207 xpp->sp_debug = dp->tc_dbglvl;
1208 }
1209 break;
1210#else
1211 error = ENODEV;
1212 goto out;
1213#endif
1214 case TCSIGRXIT:
1215 dp->tc_int = regp->rx_int_count;
1216 break;
1217 case TCSIRXIT:
1218 SUCHECK;
1219 regp->rx_int_count = dp->tc_int;
1220 break;
1221 case TCSIGIT:
1222 dp->tc_int = regp->int_count;
1223 break;
1224 case TCSIIT:
1225 SUCHECK;
1226 regp->int_count = dp->tc_int;
1227 break;
1228 case TCSISTATE:
1229 dp->tc_int = xpp->sp_ccb->hi_ip;
1230 break;
1231 /* these next three use a different structure */
1232 case TCSI_PORT:
1233 SUCHECK;
1234 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport));
1235 break;
1236 case TCSI_CCB:
1237 SUCHECK;
1238 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb));
1239 break;
1240 case TCSI_TTY:
1241 SUCHECK;
1242 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty));
1243 break;
1244 default:
1245 error = EINVAL;
1246 goto out;
1247 }
1248out:
8d77660e 1249 crit_exit();
984263bc
MD
1250 return(error); /* success */
1251}
1252
1253/*
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..
1258 */
1259static int
1260siparam(struct tty *tp, struct termios *t)
1261{
1262 struct si_port *pp = TP2PP(tp);
1263 volatile struct si_channel *ccbp;
8d77660e 1264 int cflag, iflag, oflag, lflag;
984263bc
MD
1265 int error = 0; /* shutup gcc */
1266 int ispeed = 0; /* shutup gcc */
1267 int ospeed = 0; /* shutup gcc */
1268 BYTE val;
1269
1270 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t));
1271 cflag = t->c_cflag;
1272 iflag = t->c_iflag;
1273 oflag = t->c_oflag;
1274 lflag = t->c_lflag;
1275 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n",
1276 oflag, cflag, iflag, lflag));
1277
1278 /* XXX - if Jet host and SXDC module, use extended baud rates */
1279
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;
1286
1287 /* enforce legit baud rate */
1288 if (ospeed < 0 || ispeed < 0)
1289 return (EINVAL);
1290 }
1291
8d77660e 1292 crit_enter();
984263bc
MD
1293
1294 ccbp = pp->sp_ccb;
1295
1296 /* ========== set hi_break ========== */
1297 val = 0;
1298 if (iflag & IGNBRK) /* Breaks */
1299 val |= BR_IGN;
1300 if (iflag & BRKINT) /* Interrupt on break? */
1301 val |= BR_INT;
1302 if (iflag & PARMRK) /* Parity mark? */
1303 val |= BR_PARMRK;
1304 if (iflag & IGNPAR) /* Ignore chars with parity errors? */
1305 val |= BR_PARIGN;
1306 ccbp->hi_break = val;
1307
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;
1313 }
1314 ccbp->hi_csr = val;
1315
1316 /* ========== set hi_mr2 ========== */
1317 val = 0;
1318 if (cflag & CSTOPB) /* Stop bits */
1319 val |= MR2_2_STOP;
1320 else
1321 val |= MR2_1_STOP;
1322 /*
1323 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1324 * a DCE, hence the reverse sense of RTS and CTS
1325 */
1326 /* Output Flow - RTS must be raised before data can be sent */
1327 if (cflag & CCTS_OFLOW)
1328 val |= MR2_RTSCONT;
1329
1330 ccbp->hi_mr2 = val;
1331
1332 /* ========== set hi_mr1 ========== */
1333 val = 0;
1334 if (!(cflag & PARENB)) /* Parity */
1335 val |= MR1_NONE;
1336 else
1337 val |= MR1_WITH;
1338 if (cflag & PARODD)
1339 val |= MR1_ODD;
1340
1341 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1342 val |= MR1_8_BITS;
1343 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1344 val |= MR1_7_BITS;
1345 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1346 val |= MR1_6_BITS;
1347 } else { /* Must be 5 */
1348 val |= MR1_5_BITS;
1349 }
1350 /*
1351 * Enable H/W RTS/CTS handshaking. The default TA/MTA is
1352 * a DCE, hence the reverse sense of RTS and CTS
1353 */
1354 /* Input Flow - CTS is raised when port is ready to receive data */
1355 if (cflag & CRTS_IFLOW)
1356 val |= MR1_CTSCONT;
1357
1358 ccbp->hi_mr1 = val;
1359
1360 /* ========== set hi_mask ========== */
1361 val = 0xff;
1362 if ((cflag & CS8) == CS8) { /* 8 data bits? */
1363 val &= 0xFF;
1364 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */
1365 val &= 0x7F;
1366 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */
1367 val &= 0x3F;
1368 } else { /* Must be 5 */
1369 val &= 0x1F;
1370 }
1371 if (iflag & ISTRIP)
1372 val &= 0x7F;
1373
1374 ccbp->hi_mask = val;
1375
1376 /* ========== set hi_prtcl ========== */
1377 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */
1378 if (iflag & IXANY)
1379 val |= SP_TANY;
1380 if (iflag & IXON)
1381 val |= SP_TXEN;
1382 if (iflag & IXOFF)
1383 val |= SP_RXEN;
1384 if (iflag & INPCK)
1385 val |= SP_PAEN;
1386
1387 ccbp->hi_prtcl = val;
1388
1389
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];
1394
1395 ccbp->hi_rxon = t->c_cc[VSTART];
1396 ccbp->hi_rxoff = t->c_cc[VSTOP];
1397
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 */
1402 else
1403 si_command(pp, CONFIG, SI_WAIT); /* change params */
1404
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);
1409 } else {
1410 /*
1411 * If the previous speed was 0, may need to re-enable
1412 * the modem signals
1413 */
1414 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS);
1415 }
1416
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));
1419
8d77660e 1420 crit_exit();
984263bc
MD
1421 return(error);
1422}
1423
1424/*
1425 * Enable or Disable the writes to this channel...
1426 * "state" -> enabled = 1; disabled = 0;
1427 */
1428static void
1429si_write_enable(struct si_port *pp, int state)
1430{
984263bc 1431
8d77660e 1432 crit_enter();
984263bc
MD
1433
1434 if (state) {
1435 pp->sp_state &= ~SS_BLOCKWRITE;
1436 if (pp->sp_state & SS_WAITWRITE) {
1437 pp->sp_state &= ~SS_WAITWRITE;
1438 /* thunder away! */
1439 wakeup((caddr_t)pp);
1440 }
1441 } else {
1442 pp->sp_state |= SS_BLOCKWRITE;
1443 }
1444
8d77660e 1445 crit_exit();
984263bc
MD
1446}
1447
1448/*
1449 * Set/Get state of modem control lines.
1450 * Due to DCE-like behaviour of the adapter, some signals need translation:
1451 * TIOCM_DTR DSR
1452 * TIOCM_RTS CTS
1453 */
1454static int
1455si_modem(struct si_port *pp, enum si_mctl cmd, int bits)
1456{
1457 volatile struct si_channel *ccbp;
1458 int x;
1459
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 */
1462 switch (cmd) {
1463 case GET:
1464 x = ccbp->hi_ip;
1465 bits = TIOCM_LE;
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;
1470 return(bits);
1471 case SET:
1472 ccbp->hi_op &= ~(OP_DSR|OP_CTS);
1473 /* fall through */
1474 case BIS:
1475 x = 0;
1476 if (bits & TIOCM_DTR)
1477 x |= OP_DSR;
1478 if (bits & TIOCM_RTS)
1479 x |= OP_CTS;
1480 ccbp->hi_op |= x;
1481 break;
1482 case BIC:
1483 if (bits & TIOCM_DTR)
1484 ccbp->hi_op &= ~OP_DSR;
1485 if (bits & TIOCM_RTS)
1486 ccbp->hi_op &= ~OP_CTS;
1487 }
1488 return 0;
1489}
1490
1491/*
1492 * Handle change of modem state
1493 */
1494static void
1495si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip)
1496{
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",
1501 tp->t_line));
1502 (void)(*linesw[tp->t_line].l_modem)(tp, 1);
1503 }
1504 } else {
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);
1509 }
1510 }
1511 pp->sp_last_hi_ip = hi_ip;
1512
1513}
1514
1515/*
1516 * Poller to catch missed interrupts.
1517 *
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(). :-)
1520 */
1521#ifdef POLL
1522static void
1523si_poll(void *nothing)
1524{
1525 struct si_softc *sc;
1526 int i;
1527 volatile struct si_reg *regp;
1528 struct si_port *pp;
8d77660e 1529 int lost, port;
984263bc
MD
1530
1531 DPRINT((0, DBG_POLL, "si_poll()\n"));
8d77660e 1532 crit_enter();
984263bc
MD
1533 if (in_intr)
1534 goto out;
1535 lost = 0;
1536 for (i = 0; i < si_numunits; i++) {
1537 sc = devclass_get_softc(si_devclass, i);
1538 if (sc == NULL || sc->sc_type == SIEMPTY)
1539 continue;
1540 regp = (struct si_reg *)sc->sc_maddr;
1541
1542 /*
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.
1546 */
1547 if (regp->int_pending != 0) {
1548 if (regp->int_scounter >= 200 &&
1549 regp->initstat == 1) {
e3869ec7 1550 kprintf("si%d: lost intr\n", i);
984263bc
MD
1551 lost++;
1552 }
1553 } else {
1554 regp->int_scounter = 0;
1555 }
1556
1557 /*
1558 * gripe about no input flow control..
1559 */
1560 pp = sc->sc_ports;
1561 for (port = 0; port < sc->sc_nport; pp++, port++) {
1562 if (pp->sp_delta_overflows > 0) {
e3869ec7 1563 kprintf("si%d: %d tty level buffer overflows\n",
984263bc
MD
1564 i, pp->sp_delta_overflows);
1565 pp->sp_delta_overflows = 0;
1566 }
1567 }
1568 }
1569 if (lost || si_realpoll)
1570 si_intr(NULL); /* call intr with fake vector */
1571out:
8d77660e 1572 crit_exit();
984263bc 1573
9a5ed89e 1574 callout_reset(&poll_ch, si_pollrate, si_poll, NULL);
984263bc
MD
1575}
1576#endif /* ifdef POLL */
1577
1578/*
1579 * The interrupt handler polls ALL ports on ALL adapters each time
1580 * it is called.
1581 */
1582
1583static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */
1584static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */
1585
1586void
1587si_intr(void *arg)
1588{
1589 struct si_softc *sc;
1590 struct si_port *pp;
1591 volatile struct si_channel *ccbp;
1592 struct tty *tp;
1593 volatile caddr_t maddr;
1594 BYTE op, ip;
1595 int x, card, port, n, i, isopen;
1596 volatile BYTE *z;
1597 BYTE c;
1598
1599 sc = arg;
1600
1601 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n"));
1602 if (in_intr)
1603 return;
1604 in_intr = 1;
1605
1606 /*
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.
1610 *
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.
1613 */
1614 for (card = 0; card < si_numunits; card++) {
1615 sc = devclass_get_softc(si_devclass, card);
1616 if (sc == NULL || sc->sc_type == SIEMPTY)
1617 continue;
1618
1619 /*
1620 * First, clear the interrupt
1621 */
1622 switch(sc->sc_type) {
1623 case SIHOST:
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 */
1629 break;
1630 case SIHOST2:
1631 maddr = sc->sc_maddr;
1632 ((volatile struct si_reg *)maddr)->int_pending = 0;
1633 *(maddr+SIPLIRQCLR) = 0x00;
1634 *(maddr+SIPLIRQCLR) = 0x10;
1635 break;
1636 case SIPCI:
1637 maddr = sc->sc_maddr;
1638 ((volatile struct si_reg *)maddr)->int_pending = 0;
1639 *(maddr+SIPCIINTCL) = 0x0;
1640 break;
1641 case SIJETPCI: /* fall through to JETISA case */
1642 case SIJETISA:
1643 maddr = sc->sc_maddr;
1644 ((volatile struct si_reg *)maddr)->int_pending = 0;
1645 *(maddr+SIJETINTCL) = 0x0;
1646 break;
1647 case SIEISA:
1648 maddr = sc->sc_maddr;
1649 ((volatile struct si_reg *)maddr)->int_pending = 0;
1650 (void)inb(sc->sc_iobase + 3);
1651 break;
1652 case SIEMPTY:
1653 default:
1654 continue;
1655 }
1656 ((volatile struct si_reg *)maddr)->int_scounter = 0;
1657
1658 /*
1659 * check each port
1660 */
1661 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport;
1662 pp++, port++) {
1663 ccbp = pp->sp_ccb;
1664 tp = pp->sp_tty;
1665
1666 /*
1667 * See if a command has completed ?
1668 */
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) {
1674 case LOPEN:
1675 case MPEND:
1676 case MOPEN:
1677 case CONFIG:
1678 case SBREAK:
1679 case EBREAK:
1680 pp->sp_pend = ccbp->hi_stat;
1681 /* sleeping in si_command */
1682 wakeup(&pp->sp_state);
1683 break;
1684 default:
1685 pp->sp_pend = ccbp->hi_stat;
1686 }
1687 }
1688
1689 /*
1690 * Continue on if it's closed
1691 */
1692 if (ccbp->hi_stat == IDLE_CLOSE) {
1693 continue;
1694 }
1695
1696 /*
1697 * Do modem state change if not a local device
1698 */
1699 si_modem_state(pp, tp, ccbp->hi_ip);
1700
1701 /*
1702 * Check to see if we should 'receive' characters.
1703 */
1704 if (tp->t_state & TS_CONNECTED &&
1705 tp->t_state & TS_ISOPEN)
1706 isopen = 1;
1707 else
1708 isopen = 0;
1709
1710 /*
1711 * Do input break processing
1712 */
1713 if (ccbp->hi_state & ST_BREAK) {
1714 if (isopen) {
1715 (*linesw[tp->t_line].l_rint)(TTY_BI, tp);
1716 }
1717 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */
1718 DPRINT((pp, DBG_INTR, "si_intr break\n"));
1719 }
1720
1721 /*
1722 * Do RX stuff - if not open then dump any characters.
1723 * XXX: This is VERY messy and needs to be cleaned up.
1724 *
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.
1728 */
1729
1730 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */
1731
1732 if (!isopen) {
1733 ccbp->hi_rxopos = ccbp->hi_rxipos;
1734 goto end_rx;
1735 }
1736
1737 /*
1738 * If the tty input buffers are blocked, stop emptying
1739 * the incoming buffers and let the auto flow control
1740 * assert..
1741 */
1742 if (tp->t_state & TS_TBLOCK) {
1743 goto end_rx;
1744 }
1745
1746 /*
1747 * Process read characters if not skipped above
1748 */
1749 op = ccbp->hi_rxopos;
1750 ip = ccbp->hi_rxipos;
1751 c = ip - op;
1752 if (c == 0) {
1753 goto end_rx;
1754 }
1755
1756 n = c & 0xff;
1757 if (n > 250)
1758 n = 250;
1759
1760 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1761 n, op, ip));
1762
1763 /*
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.
1769 */
1770 if (n <= SI_BUFFERSIZE - op) {
1771
1772 DPRINT((pp, DBG_INTR, "\tsingle copy\n"));
1773 z = ccbp->hi_rxbuf + op;
1774 si_vbcopy(z, si_rxbuf, n);
1775
1776 op += n;
1777 } else {
1778 x = SI_BUFFERSIZE - op;
1779
1780 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x));
1781 z = ccbp->hi_rxbuf + op;
1782 si_vbcopy(z, si_rxbuf, x);
1783
1784 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n",
1785 n - x));
1786 z = ccbp->hi_rxbuf;
1787 si_vbcopy(z, si_rxbuf + x, n - x);
1788
1789 op += n;
1790 }
1791
1792 /* clear collected characters from buffer */
1793 ccbp->hi_rxopos = op;
1794
1795 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n",
1796 n, op, ip));
1797
1798 /*
1799 * at this point...
1800 * n = number of chars placed in si_rxbuf
1801 */
1802
1803 /*
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).
1810 */
1811 if (tp->t_state & TS_CAN_BYPASS_L_RINT) {
1812
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))
1818 ttyblock(tp);
1819
1820 tk_nin += n;
1821 tk_rawcc += n;
1822 tp->t_rawcc += n;
1823
1824 pp->sp_delta_overflows +=
1825 b_to_q((char *)si_rxbuf, n, &tp->t_rawq);
1826
1827 ttwakeup(tp);
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;
1833 si_start(tp);
1834 }
1835 } else {
1836 /*
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.
1841 */
1842 for(x = 0; x < n; x++) {
1843 i = si_rxbuf[x];
1844 if ((*linesw[tp->t_line].l_rint)(i, tp)
1845 == -1) {
1846 pp->sp_delta_overflows++;
1847 }
1848 /*
1849 * doesn't seem to be much point doing
1850 * this here.. this driver has no
1851 * softtty processing! ??
1852 */
1853 if (pp->sp_hotchar && i == pp->sp_hotchar) {
1854 setsofttty();
1855 }
1856 }
1857 }
1858 goto more_rx; /* try for more until RXbuf is empty */
1859
1860 end_rx: /* XXX: Again, sorry about the gotos.. :-) */
1861
1862 /*
1863 * Do TX stuff
1864 */
1865 (*linesw[tp->t_line].l_start)(tp);
1866
1867 } /* end of for (all ports on this controller) */
1868 } /* end of for (all controllers) */
1869
1870 in_intr = 0;
1871 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n"));
1872}
1873
1874/*
1875 * Nudge the transmitter...
1876 *
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.
1883 */
1884static void
1885si_start(struct tty *tp)
1886{
1887 struct si_port *pp;
1888 volatile struct si_channel *ccbp;
1889 struct clist *qp;
1890 BYTE ipos;
1891 int nchar;
8d77660e 1892 int count, n, amount, buffer_full;
984263bc 1893
8d77660e 1894 crit_enter();
984263bc
MD
1895
1896 qp = &tp->t_outq;
1897 pp = TP2PP(tp);
1898
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));
1902
1903 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP))
1904 goto out;
1905
1906 buffer_full = 0;
1907 ccbp = pp->sp_ccb;
1908
1909 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1910 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count));
1911
1912 while ((nchar = qp->c_cc) > 0) {
1913 if ((BYTE)count >= 255) {
1914 buffer_full++;
1915 break;
1916 }
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);
1923 } else {
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));
1928 }
1929 ccbp->hi_txipos += n;
1930 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos;
1931 }
1932
1933 if (count != 0 && nchar == 0) {
1934 tp->t_state |= TS_BUSY;
1935 } else {
1936 tp->t_state &= ~TS_BUSY;
1937 }
1938
1939 /* wakeup time? */
1940 ttwwakeup(tp);
1941
1942 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n",
1943 (BYTE)count, nchar, tp->t_state));
1944
1945 if (tp->t_state & TS_BUSY)
1946 {
1947 int time;
1948
1949 time = ttspeedtab(tp->t_ospeed, chartimes);
1950
1951 if (time > 0) {
1952 if (time < nchar)
1953 time = nchar / time;
1954 else
1955 time = 2;
1956 } else {
1957 DPRINT((pp, DBG_START,
1958 "bad char time value! %d\n", time));
1959 time = hz/10;
1960 }
1961
1962 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) {
54607efb 1963 callout_stop(&pp->lstart_ch);
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1964 } else {
1965 pp->sp_state |= SS_LSTART;
1966 }
1967 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time));
54607efb 1968 callout_reset(&pp->lstart_ch, time, si_lstart, (void *)pp);
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1969 }
1970
1971out:
8d77660e 1972 crit_exit();
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1973 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n"));
1974}
1975
1976/*
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.
1981 */
1982static void
1983si_lstart(void *arg)
1984{
1985 struct si_port *pp = arg;
1986 struct tty *tp;
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1987
1988 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n",
1989 pp, pp->sp_state));
1990
8d77660e 1991 crit_enter();
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1992
1993 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) {
8d77660e 1994 crit_exit();
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1995 return;
1996 }
1997 pp->sp_state &= ~SS_LSTART;
1998 pp->sp_state |= SS_INLSTART;
1999
2000 tp = pp->sp_tty;
2001
2002 /* deal with the process exit case */
2003 ttwwakeup(tp);
2004
2005 /* nudge protocols - eg: ppp */
2006 (*linesw[tp->t_line].l_start)(tp);
2007
2008 pp->sp_state &= ~SS_INLSTART;
8d77660e 2009 crit_exit();
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2010}
2011
2012/*
2013 * Stop output on a line. called at spltty();
2014 */
2015void
2016si_stop(struct tty *tp, int rw)
2017{
2018 volatile struct si_channel *ccbp;
2019 struct si_port *pp;
2020
2021 pp = TP2PP(tp);
2022 ccbp = pp->sp_ccb;
2023
2024 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw));
2025
2026 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */
2027 if (rw & FWRITE) {
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???? */
2033 }
2034 }
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?
2040 */
2041 if (rw & FREAD) {
2042 ccbp->hi_rxopos = ccbp->hi_rxipos;
2043 }
2044#endif
2045}
2046
2047/*
2048 * Issue a command to the host card CPU.
2049 */
2050
2051static void
2052si_command(struct si_port *pp, int cmd, int waitflag)
2053{
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2054 volatile struct si_channel *ccbp = pp->sp_ccb;
2055 int x;
2056
2057 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n",
2058 pp, cmd, waitflag, ccbp->hi_stat));
2059
8d77660e 2060 crit_enter(); /* Keep others out */
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2061
2062 /* wait until it's finished what it was doing.. */
2063 /* XXX: sits in IDLE_BREAK until something disturbs it or break
2064 * is turned off. */
2065 while((x = ccbp->hi_stat) != IDLE_OPEN &&
2066 x != IDLE_CLOSE &&
2067 x != IDLE_BREAK &&
2068 x != cmd) {
2069 if (in_intr) { /* Prevent sleep in intr */
2070 DPRINT((pp, DBG_PARAM,
2071 "cmd intr collision - completing %d\trequested %d\n",
2072 x, cmd));
8d77660e 2073 crit_exit();
984263bc 2074 return;
377d4740 2075 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
984263bc 2076 "sicmd1", 1)) {
8d77660e 2077 crit_exit();
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2078 return;
2079 }
2080 }
2081 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */
2082
2083 /* if there was a pending command, cause a state-change wakeup */
2084 switch(pp->sp_pend) {
2085 case LOPEN:
2086 case MPEND:
2087 case MOPEN:
2088 case CONFIG:
2089 case SBREAK:
2090 case EBREAK:
2091 wakeup(&pp->sp_state);
2092 break;
2093 default:
2094 break;
2095 }
2096
2097 pp->sp_pend = cmd; /* New command pending */
2098 ccbp->hi_stat = cmd; /* Post it */
2099
2100 if (waitflag) {
2101 if (in_intr) { /* If in interrupt handler */
2102 DPRINT((pp, DBG_PARAM,
2103 "attempt to sleep in si_intr - cmd req %d\n",
2104 cmd));
8d77660e 2105 crit_exit();
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2106 return;
2107 } else while(ccbp->hi_stat != IDLE_OPEN &&
2108 ccbp->hi_stat != IDLE_BREAK) {
377d4740 2109 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, PCATCH,
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2110 "sicmd2", 0))
2111 break;
2112 }
2113 }
8d77660e 2114 crit_exit();
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2115}
2116
2117static void
2118si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp)
2119{
2120 /*
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.
2124 */
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;
2132 else
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",
2137 pp->sp_hotchar));
2138}
2139
2140
2141#ifdef SI_DEBUG
2142
2143void
2144si_dprintf(struct si_port *pp, int flags, const char *fmt, ...)
2145{
e2565a42 2146 __va_list ap;
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2147
2148 if ((pp == NULL && (si_debug&flags)) ||
2149 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) {
2150 if (pp != NULL)
e3869ec7 2151 kprintf("%ci%d(%d): ", 's',
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2152 (int)SI_CARD(minor(pp->sp_tty->t_dev)),
2153 (int)SI_PORT(minor(pp->sp_tty->t_dev)));
e2565a42 2154 __va_start(ap, fmt);
379210cb 2155 kvprintf(fmt, ap);
e2565a42 2156 __va_end(ap);
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2157 }
2158}
2159
2160static char *
2161si_mctl2str(enum si_mctl cmd)
2162{
2163 switch (cmd) {
2164 case GET:
2165 return("GET");
2166 case SET:
2167 return("SET");
2168 case BIS:
2169 return("BIS");
2170 case BIC:
2171 return("BIC");
2172 }
2173 return("BAD");
2174}
2175
2176#endif /* DEBUG */
2177
2178static char *
2179si_modulename(int host_type, int uart_type)
2180{
2181 switch (host_type) {
2182 /* Z280 based cards */
2183 case SIEISA:
2184 case SIHOST2:
2185 case SIHOST:
2186 case SIPCI:
2187 switch (uart_type) {
2188 case 0:
2189 return(" (XIO)");
2190 case 1:
2191 return(" (SI)");
2192 }
2193 break;
2194 /* T225 based hosts */
2195 case SIJETPCI:
2196 case SIJETISA:
2197 switch (uart_type) {
2198 case 0:
2199 return(" (SI)");
2200 case 40:
2201 return(" (XIO)");
2202 case 72:
2203 return(" (SXDC)");
2204 }
2205 break;
2206 }
2207 return("");
2208}