si.c revision 126080
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 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: head/sys/dev/si/si.c 126080 2004-02-21 21:10:55Z phk $"); 37 38#ifndef lint 39static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", 40 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", 41 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; 42#endif /* not lint */ 43 44#include "opt_compat.h" 45#include "opt_debug_si.h" 46#include "opt_tty.h" 47 48#include <sys/param.h> 49#include <sys/systm.h> 50#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 51#include <sys/ioctl_compat.h> 52#endif 53#include <sys/tty.h> 54#include <sys/conf.h> 55#include <sys/fcntl.h> 56#include <sys/kernel.h> 57#include <sys/malloc.h> 58#include <sys/sysctl.h> 59#include <sys/bus.h> 60#include <machine/bus.h> 61#include <sys/rman.h> 62#include <machine/resource.h> 63 64 65#include <vm/vm.h> 66#include <vm/pmap.h> 67 68#include <machine/stdarg.h> 69 70#include <dev/si/sireg.h> 71#include <dev/si/sivar.h> 72#include <dev/si/si.h> 73 74/* 75 * This device driver is designed to interface the Specialix International 76 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, 77 * EISA or PCI bus machine. 78 * 79 * The controller is interfaced to the host via dual port RAM 80 * and an interrupt. 81 * 82 * The code for the Host 1 (very old ISA cards) has not been tested. 83 */ 84 85#define POLL /* turn on poller to scan for lost interrupts */ 86#define REALPOLL /* on each poll, scan for work regardless */ 87#define POLLHZ (hz/10) /* 10 times per second */ 88#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) 89#define INT_COUNT 25000 /* max of 125 ints per second */ 90#define JET_INT_COUNT 100 /* max of 100 ints per second */ 91#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ 92 93enum si_mctl { GET, SET, BIS, BIC }; 94 95static void si_command(struct si_port *, int, int); 96static int si_modem(struct si_port *, enum si_mctl, int); 97static void si_write_enable(struct si_port *, int); 98static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *); 99static void si_start(struct tty *); 100static void si_stop(struct tty *, int); 101static timeout_t si_lstart; 102static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp); 103static void sihardclose(struct si_port *pp); 104static void sidtrwakeup(void *chan); 105 106#ifdef SI_DEBUG 107static char *si_mctl2str(enum si_mctl cmd); 108#endif 109 110static int siparam(struct tty *, struct termios *); 111 112static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); 113static char * si_modulename(int host_type, int uart_type); 114 115static d_open_t siopen; 116static d_close_t siclose; 117static d_write_t siwrite; 118static d_ioctl_t siioctl; 119 120static struct cdevsw si_cdevsw = { 121 .d_version = D_VERSION, 122 .d_open = siopen, 123 .d_close = siclose, 124 .d_write = siwrite, 125 .d_ioctl = siioctl, 126 .d_name = "si", 127 .d_flags = D_TTY | D_NEEDGIANT, 128}; 129 130static int si_Nports; 131static int si_Nmodules; 132static int si_debug = 0; /* data, not bss, so it's patchable */ 133 134SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 135TUNABLE_INT("machdep.si_debug", &si_debug); 136 137static int si_numunits; 138 139devclass_t si_devclass; 140 141#ifndef B2000 /* not standard, but the hardware knows it. */ 142# define B2000 2000 143#endif 144static struct speedtab bdrates[] = { 145 { B75, CLK75, }, /* 0x0 */ 146 { B110, CLK110, }, /* 0x1 */ 147 { B150, CLK150, }, /* 0x3 */ 148 { B300, CLK300, }, /* 0x4 */ 149 { B600, CLK600, }, /* 0x5 */ 150 { B1200, CLK1200, }, /* 0x6 */ 151 { B2000, CLK2000, }, /* 0x7 */ 152 { B2400, CLK2400, }, /* 0x8 */ 153 { B4800, CLK4800, }, /* 0x9 */ 154 { B9600, CLK9600, }, /* 0xb */ 155 { B19200, CLK19200, }, /* 0xc */ 156 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 157 { B57600, CLK57600, }, /* 0xd */ 158 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 159 { -1, -1 }, 160}; 161 162 163/* populated with approx character/sec rates - translated at card 164 * initialisation time to chars per tick of the clock */ 165static int done_chartimes = 0; 166static struct speedtab chartimes[] = { 167 { B75, 8, }, 168 { B110, 11, }, 169 { B150, 15, }, 170 { B300, 30, }, 171 { B600, 60, }, 172 { B1200, 120, }, 173 { B2000, 200, }, 174 { B2400, 240, }, 175 { B4800, 480, }, 176 { B9600, 960, }, 177 { B19200, 1920, }, 178 { B38400, 3840, }, 179 { B57600, 5760, }, 180 { B115200, 11520, }, 181 { -1, -1 }, 182}; 183static volatile int in_intr = 0; /* Inside interrupt handler? */ 184 185#ifdef POLL 186static int si_pollrate; /* in addition to irq */ 187static int si_realpoll = 0; /* poll HW on timer */ 188 189SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 190SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 191 192static int init_finished = 0; 193static void si_poll(void *); 194#endif 195 196/* 197 * Array of adapter types and the corresponding RAM size. The order of 198 * entries here MUST match the ordinal of the adapter type. 199 */ 200static char *si_type[] = { 201 "EMPTY", 202 "SIHOST", 203 "SIMCA", /* FreeBSD does not support Microchannel */ 204 "SIHOST2", 205 "SIEISA", 206 "SIPCI", 207 "SXPCI", 208 "SXISA", 209}; 210 211/* 212 * We have to make an 8 bit version of bcopy, since some cards can't 213 * deal with 32 bit I/O 214 */ 215static void __inline 216si_bcopy(const void *src, void *dst, size_t len) 217{ 218 while (len--) 219 *(((u_char *)dst)++) = *(((const u_char *)src)++); 220} 221static void __inline 222si_vbcopy(const volatile void *src, void *dst, size_t len) 223{ 224 while (len--) 225 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++); 226} 227static void __inline 228si_bcopyv(const void *src, volatile void *dst, size_t len) 229{ 230 while (len--) 231 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++); 232} 233 234 235/* 236 * Attach the device. Initialize the card. 237 */ 238int 239siattach(device_t dev) 240{ 241 int unit; 242 struct si_softc *sc; 243 struct si_port *pp; 244 volatile struct si_channel *ccbp; 245 volatile struct si_reg *regp; 246 volatile caddr_t maddr; 247 struct si_module *modp; 248 struct speedtab *spt; 249 int nmodule, nport, x, y; 250 int uart_type; 251 252 sc = device_get_softc(dev); 253 unit = device_get_unit(dev); 254 255 sc->sc_typename = si_type[sc->sc_type]; 256 if (si_numunits < unit + 1) 257 si_numunits = unit + 1; 258 259 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 260 261#ifdef POLL 262 if (si_pollrate == 0) { 263 si_pollrate = POLLHZ; /* in addition to irq */ 264#ifdef REALPOLL 265 si_realpoll = 1; /* scan always */ 266#endif 267 } 268#endif 269 270 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 271 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 272 273 sc->sc_ports = NULL; /* mark as uninitialised */ 274 275 maddr = sc->sc_maddr; 276 277 /* Stop the CPU first so it won't stomp around while we load */ 278 279 switch (sc->sc_type) { 280 case SIEISA: 281 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 282 break; 283 case SIPCI: 284 *(maddr+SIPCIRESET) = 0; 285 break; 286 case SIJETPCI: /* fall through to JET ISA */ 287 case SIJETISA: 288 *(maddr+SIJETCONFIG) = 0; 289 break; 290 case SIHOST2: 291 *(maddr+SIPLRESET) = 0; 292 break; 293 case SIHOST: 294 *(maddr+SIRESET) = 0; 295 break; 296 default: /* this should never happen */ 297 printf("si%d: unsupported configuration\n", unit); 298 return EINVAL; 299 break; 300 } 301 302 /* OK, now lets download the download code */ 303 304 if (SI_ISJET(sc->sc_type)) { 305 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 306 unit, si3_t225_dsize)); 307 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 308 si3_t225_dsize); 309 DPRINT((0, DBG_DOWNLOAD, 310 "si%d: jet_bootstrap: nbytes %d -> %x\n", 311 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 312 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 313 si3_t225_bsize); 314 } else { 315 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 316 unit, si2_z280_dsize)); 317 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 318 si2_z280_dsize); 319 } 320 321 /* Now start the CPU */ 322 323 switch (sc->sc_type) { 324 case SIEISA: 325 /* modify the download code to tell it that it's on an EISA */ 326 *(maddr + 0x42) = 1; 327 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 328 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 329 break; 330 case SIPCI: 331 /* modify the download code to tell it that it's on a PCI */ 332 *(maddr+0x42) = 1; 333 *(maddr+SIPCIRESET) = 1; 334 *(maddr+SIPCIINTCL) = 0; 335 break; 336 case SIJETPCI: 337 *(maddr+SIJETRESET) = 0; 338 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 339 break; 340 case SIJETISA: 341 *(maddr+SIJETRESET) = 0; 342 switch (sc->sc_irq) { 343 case 9: 344 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 345 break; 346 case 10: 347 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 348 break; 349 case 11: 350 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 351 break; 352 case 12: 353 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 354 break; 355 case 15: 356 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 357 break; 358 } 359 break; 360 case SIHOST: 361 *(maddr+SIRESET_CL) = 0; 362 *(maddr+SIINTCL_CL) = 0; 363 break; 364 case SIHOST2: 365 *(maddr+SIPLRESET) = 0x10; 366 switch (sc->sc_irq) { 367 case 11: 368 *(maddr+SIPLIRQ11) = 0x10; 369 break; 370 case 12: 371 *(maddr+SIPLIRQ12) = 0x10; 372 break; 373 case 15: 374 *(maddr+SIPLIRQ15) = 0x10; 375 break; 376 } 377 *(maddr+SIPLIRQCLR) = 0x10; 378 break; 379 default: /* this should _REALLY_ never happen */ 380 printf("si%d: Uh, it was supported a second ago...\n", unit); 381 return EINVAL; 382 } 383 384 DELAY(1000000); /* wait around for a second */ 385 386 regp = (struct si_reg *)maddr; 387 y = 0; 388 /* wait max of 5 sec for init OK */ 389 while (regp->initstat == 0 && y++ < 10) { 390 DELAY(500000); 391 } 392 switch (regp->initstat) { 393 case 0: 394 printf("si%d: startup timeout - aborting\n", unit); 395 sc->sc_type = SIEMPTY; 396 return EINVAL; 397 case 1: 398 if (SI_ISJET(sc->sc_type)) { 399 /* set throttle to 100 times per second */ 400 regp->int_count = JET_INT_COUNT; 401 /* rx_intr_count is a NOP in Jet */ 402 } else { 403 /* set throttle to 125 times per second */ 404 regp->int_count = INT_COUNT; 405 /* rx intr max of 25 times per second */ 406 regp->rx_int_count = RXINT_COUNT; 407 } 408 regp->int_pending = 0; /* no intr pending */ 409 regp->int_scounter = 0; /* reset counter */ 410 break; 411 case 0xff: 412 /* 413 * No modules found, so give up on this one. 414 */ 415 printf("si%d: %s - no ports found\n", unit, 416 si_type[sc->sc_type]); 417 return 0; 418 default: 419 printf("si%d: download code version error - initstat %x\n", 420 unit, regp->initstat); 421 return EINVAL; 422 } 423 424 /* 425 * First time around the ports just count them in order 426 * to allocate some memory. 427 */ 428 nport = 0; 429 modp = (struct si_module *)(maddr + 0x80); 430 for (;;) { 431 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 432 switch (modp->sm_type) { 433 case TA4: 434 DPRINT((0, DBG_DOWNLOAD, 435 "si%d: Found old TA4 module, 4 ports\n", 436 unit)); 437 x = 4; 438 break; 439 case TA8: 440 DPRINT((0, DBG_DOWNLOAD, 441 "si%d: Found old TA8 module, 8 ports\n", 442 unit)); 443 x = 8; 444 break; 445 case TA4_ASIC: 446 DPRINT((0, DBG_DOWNLOAD, 447 "si%d: Found ASIC TA4 module, 4 ports\n", 448 unit)); 449 x = 4; 450 break; 451 case TA8_ASIC: 452 DPRINT((0, DBG_DOWNLOAD, 453 "si%d: Found ASIC TA8 module, 8 ports\n", 454 unit)); 455 x = 8; 456 break; 457 case MTA: 458 DPRINT((0, DBG_DOWNLOAD, 459 "si%d: Found CD1400 module, 8 ports\n", 460 unit)); 461 x = 8; 462 break; 463 case SXDC: 464 DPRINT((0, DBG_DOWNLOAD, 465 "si%d: Found SXDC module, 8 ports\n", 466 unit)); 467 x = 8; 468 break; 469 default: 470 printf("si%d: unknown module type %d\n", 471 unit, modp->sm_type); 472 goto try_next; 473 } 474 475 /* this was limited in firmware and is also a driver issue */ 476 if ((nport + x) > SI_MAXPORTPERCARD) { 477 printf("si%d: extra ports ignored\n", unit); 478 goto try_next; 479 } 480 481 nport += x; 482 si_Nports += x; 483 si_Nmodules++; 484 485try_next: 486 if (modp->sm_next == 0) 487 break; 488 modp = (struct si_module *) 489 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 490 } 491 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 492 M_DEVBUF, M_NOWAIT | M_ZERO); 493 if (sc->sc_ports == 0) { 494 printf("si%d: fail to malloc memory for port structs\n", 495 unit); 496 return EINVAL; 497 } 498 sc->sc_nport = nport; 499 500 /* 501 * Scan round the ports again, this time initialising. 502 */ 503 pp = sc->sc_ports; 504 nmodule = 0; 505 modp = (struct si_module *)(maddr + 0x80); 506 uart_type = 1000; /* arbitary, > uchar_max */ 507 for (;;) { 508 switch (modp->sm_type) { 509 case TA4: 510 nport = 4; 511 break; 512 case TA8: 513 nport = 8; 514 break; 515 case TA4_ASIC: 516 nport = 4; 517 break; 518 case TA8_ASIC: 519 nport = 8; 520 break; 521 case MTA: 522 nport = 8; 523 break; 524 case SXDC: 525 nport = 8; 526 break; 527 default: 528 goto try_next2; 529 } 530 nmodule++; 531 ccbp = (struct si_channel *)((char *)modp + 0x100); 532 if (uart_type == 1000) 533 uart_type = ccbp->type; 534 else if (uart_type != ccbp->type) 535 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 536 unit, nmodule, 537 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 538 uart_type, si_modulename(sc->sc_type, uart_type)); 539 540 for (x = 0; x < nport; x++, pp++, ccbp++) { 541 pp->sp_ccb = ccbp; /* save the address */ 542 pp->sp_tty = ttymalloc(NULL); 543 pp->sp_pend = IDLE_CLOSE; 544 pp->sp_state = 0; /* internal flag */ 545 pp->sp_dtr_wait = 3 * hz; 546 pp->sp_iin.c_iflag = TTYDEF_IFLAG; 547 pp->sp_iin.c_oflag = TTYDEF_OFLAG; 548 pp->sp_iin.c_cflag = TTYDEF_CFLAG; 549 pp->sp_iin.c_lflag = TTYDEF_LFLAG; 550 termioschars(&pp->sp_iin); 551 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = 552 TTYDEF_SPEED;; 553 pp->sp_iout = pp->sp_iin; 554 } 555try_next2: 556 if (modp->sm_next == 0) { 557 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 558 unit, 559 sc->sc_typename, 560 sc->sc_nport, 561 nmodule, 562 uart_type, 563 si_modulename(sc->sc_type, uart_type)); 564 break; 565 } 566 modp = (struct si_module *) 567 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 568 } 569 if (done_chartimes == 0) { 570 for (spt = chartimes ; spt->sp_speed != -1; spt++) { 571 if ((spt->sp_code /= hz) == 0) 572 spt->sp_code = 1; 573 } 574 done_chartimes = 1; 575 } 576 577/* path name devsw minor type uid gid perm*/ 578 for (x = 0; x < sc->sc_nport; x++) { 579 /* sync with the manuals that start at 1 */ 580 y = x + 1 + unit * (1 << SI_CARDSHIFT); 581 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); 582 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); 583 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); 584 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); 585 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); 586 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); 587 } 588 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); 589 return (0); 590} 591 592static int 593siopen(dev_t dev, int flag, int mode, struct thread *td) 594{ 595 int oldspl, error; 596 int card, port; 597 struct si_softc *sc; 598 struct tty *tp; 599 volatile struct si_channel *ccbp; 600 struct si_port *pp; 601 int mynor = minor(dev); 602 603 /* quickly let in /dev/si_control */ 604 if (IS_CONTROLDEV(mynor)) { 605 if ((error = suser(td))) 606 return(error); 607 return(0); 608 } 609 610 card = SI_CARD(mynor); 611 sc = devclass_get_softc(si_devclass, card); 612 if (sc == NULL) 613 return (ENXIO); 614 615 if (sc->sc_type == SIEMPTY) { 616 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", 617 card, sc->sc_typename)); 618 return(ENXIO); 619 } 620 621 port = SI_PORT(mynor); 622 if (port >= sc->sc_nport) { 623 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", 624 card, sc->sc_nport)); 625 return(ENXIO); 626 } 627 628#ifdef POLL 629 /* 630 * We've now got a device, so start the poller. 631 */ 632 if (init_finished == 0) { 633 timeout(si_poll, (caddr_t)0L, si_pollrate); 634 init_finished = 1; 635 } 636#endif 637 638 /* initial/lock device */ 639 if (IS_STATE(mynor)) { 640 return(0); 641 } 642 643 pp = sc->sc_ports + port; 644 tp = pp->sp_tty; /* the "real" tty */ 645 dev->si_tty = tp; 646 ccbp = pp->sp_ccb; /* Find control block */ 647 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", 648 devtoname(dev), flag, mode, td)); 649 650 oldspl = spltty(); /* Keep others out */ 651 error = 0; 652 653open_top: 654 while (pp->sp_state & SS_DTR_OFF) { 655 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0); 656 if (error != 0) 657 goto out; 658 } 659 660 if (tp->t_state & TS_ISOPEN) { 661 /* 662 * The device is open, so everything has been initialised. 663 * handle conflicts. 664 */ 665 if (IS_CALLOUT(mynor)) { 666 if (!pp->sp_active_out) { 667 error = EBUSY; 668 goto out; 669 } 670 } else { 671 if (pp->sp_active_out) { 672 if (flag & O_NONBLOCK) { 673 error = EBUSY; 674 goto out; 675 } 676 error = tsleep(&pp->sp_active_out, 677 TTIPRI|PCATCH, "sibi", 0); 678 if (error != 0) 679 goto out; 680 goto open_top; 681 } 682 } 683 if (tp->t_state & TS_XCLUDE && 684 suser(td)) { 685 DPRINT((pp, DBG_OPEN|DBG_FAIL, 686 "already open and EXCLUSIVE set\n")); 687 error = EBUSY; 688 goto out; 689 } 690 } else { 691 /* 692 * The device isn't open, so there are no conflicts. 693 * Initialize it. Avoid sleep... :-) 694 */ 695 DPRINT((pp, DBG_OPEN, "first open\n")); 696 tp->t_oproc = si_start; 697 tp->t_stop = si_stop; 698 tp->t_param = siparam; 699 tp->t_dev = dev; 700 tp->t_termios = mynor & SI_CALLOUT_MASK 701 ? pp->sp_iout : pp->sp_iin; 702 703 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 704 705 ++pp->sp_wopeners; /* in case of sleep in siparam */ 706 707 error = siparam(tp, &tp->t_termios); 708 709 --pp->sp_wopeners; 710 if (error != 0) 711 goto out; 712 /* XXX: we should goto_top if siparam slept */ 713 714 /* set initial DCD state */ 715 pp->sp_last_hi_ip = ccbp->hi_ip; 716 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { 717 (*linesw[tp->t_line].l_modem)(tp, 1); 718 } 719 } 720 721 /* whoops! we beat the close! */ 722 if (pp->sp_state & SS_CLOSING) { 723 /* try and stop it from proceeding to bash the hardware */ 724 pp->sp_state &= ~SS_CLOSING; 725 } 726 727 /* 728 * Wait for DCD if necessary 729 */ 730 if (!(tp->t_state & TS_CARR_ON) && 731 !IS_CALLOUT(mynor) && 732 !(tp->t_cflag & CLOCAL) && 733 !(flag & O_NONBLOCK)) { 734 ++pp->sp_wopeners; 735 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); 736 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); 737 --pp->sp_wopeners; 738 if (error != 0) 739 goto out; 740 goto open_top; 741 } 742 743 error = (*linesw[tp->t_line].l_open)(dev, tp); 744 si_disc_optim(tp, &tp->t_termios, pp); 745 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) 746 pp->sp_active_out = TRUE; 747 748 pp->sp_state |= SS_OPEN; /* made it! */ 749 750out: 751 splx(oldspl); 752 753 DPRINT((pp, DBG_OPEN, "leaving siopen\n")); 754 755 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) 756 sihardclose(pp); 757 758 return(error); 759} 760 761static int 762siclose(dev_t dev, int flag, int mode, struct thread *td) 763{ 764 struct si_port *pp; 765 struct tty *tp; 766 int oldspl; 767 int error = 0; 768 int mynor = minor(dev); 769 770 if (IS_SPECIAL(mynor)) 771 return(0); 772 773 oldspl = spltty(); 774 775 pp = MINOR2PP(mynor); 776 tp = pp->sp_tty; 777 778 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", 779 devtoname(dev), flag, mode, td, pp->sp_state)); 780 781 /* did we sleep and loose a race? */ 782 if (pp->sp_state & SS_CLOSING) { 783 /* error = ESOMETING? */ 784 goto out; 785 } 786 787 /* begin race detection.. */ 788 pp->sp_state |= SS_CLOSING; 789 790 si_write_enable(pp, 0); /* block writes for ttywait() */ 791 792 /* THIS MAY SLEEP IN TTYWAIT!!! */ 793 (*linesw[tp->t_line].l_close)(tp, flag); 794 795 si_write_enable(pp, 1); 796 797 /* did we sleep and somebody started another open? */ 798 if (!(pp->sp_state & SS_CLOSING)) { 799 /* error = ESOMETING? */ 800 goto out; 801 } 802 /* ok. we are now still on the right track.. nuke the hardware */ 803 804 if (pp->sp_state & SS_LSTART) { 805 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 806 pp->sp_state &= ~SS_LSTART; 807 } 808 809 si_stop(tp, FREAD | FWRITE); 810 811 sihardclose(pp); 812 ttyclose(tp); 813 pp->sp_state &= ~SS_OPEN; 814 815out: 816 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 817 splx(oldspl); 818 return(error); 819} 820 821static void 822sihardclose(struct si_port *pp) 823{ 824 int oldspl; 825 struct tty *tp; 826 volatile struct si_channel *ccbp; 827 828 oldspl = spltty(); 829 830 tp = pp->sp_tty; 831 ccbp = pp->sp_ccb; /* Find control block */ 832 if (tp->t_cflag & HUPCL || 833 (!pp->sp_active_out && 834 !(ccbp->hi_ip & IP_DCD) && 835 !(pp->sp_iin.c_cflag && CLOCAL)) || 836 !(tp->t_state & TS_ISOPEN)) { 837 838 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 839 (void) si_command(pp, FCLOSE, SI_NOWAIT); 840 841 if (pp->sp_dtr_wait != 0) { 842 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 843 pp->sp_state |= SS_DTR_OFF; 844 } 845 846 } 847 pp->sp_active_out = FALSE; 848 wakeup(&pp->sp_active_out); 849 wakeup(TSA_CARR_ON(tp)); 850 851 splx(oldspl); 852} 853 854 855/* 856 * called at splsoftclock()... 857 */ 858static void 859sidtrwakeup(void *chan) 860{ 861 struct si_port *pp; 862 int oldspl; 863 864 oldspl = spltty(); 865 866 pp = (struct si_port *)chan; 867 pp->sp_state &= ~SS_DTR_OFF; 868 wakeup(&pp->sp_dtr_wait); 869 870 splx(oldspl); 871} 872 873static int 874siwrite(dev_t dev, struct uio *uio, int flag) 875{ 876 struct si_port *pp; 877 struct tty *tp; 878 int error = 0; 879 int mynor = minor(dev); 880 int oldspl; 881 882 if (IS_SPECIAL(mynor)) { 883 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 884 return(ENODEV); 885 } 886 pp = MINOR2PP(mynor); 887 tp = pp->sp_tty; 888 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 889 890 oldspl = spltty(); 891 /* 892 * If writes are currently blocked, wait on the "real" tty 893 */ 894 while (pp->sp_state & SS_BLOCKWRITE) { 895 pp->sp_state |= SS_WAITWRITE; 896 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 897 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 898 "siwrite", tp->t_timeout))) { 899 if (error == EWOULDBLOCK) 900 error = EIO; 901 goto out; 902 } 903 } 904 905 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 906out: 907 splx(oldspl); 908 return (error); 909} 910 911 912static int 913siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 914{ 915 struct si_port *pp; 916 struct tty *tp; 917 int error; 918 int mynor = minor(dev); 919 int oldspl; 920 int blocked = 0; 921#if defined(COMPAT_43) 922 u_long oldcmd; 923 struct termios term; 924#endif 925 926 if (IS_SI_IOCTL(cmd)) 927 return(si_Sioctl(dev, cmd, data, flag, td)); 928 929 pp = MINOR2PP(mynor); 930 tp = pp->sp_tty; 931 932 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 933 devtoname(dev), cmd, data, flag)); 934 if (IS_STATE(mynor)) { 935 struct termios *ct; 936 937 switch (mynor & SI_STATE_MASK) { 938 case SI_INIT_STATE_MASK: 939 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 940 break; 941 case SI_LOCK_STATE_MASK: 942 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 943 break; 944 default: 945 return (ENODEV); 946 } 947 switch (cmd) { 948 case TIOCSETA: 949 error = suser(td); 950 if (error != 0) 951 return (error); 952 *ct = *(struct termios *)data; 953 return (0); 954 case TIOCGETA: 955 *(struct termios *)data = *ct; 956 return (0); 957 case TIOCGETD: 958 *(int *)data = TTYDISC; 959 return (0); 960 case TIOCGWINSZ: 961 bzero(data, sizeof(struct winsize)); 962 return (0); 963 default: 964 return (ENOTTY); 965 } 966 } 967 /* 968 * Do the old-style ioctl compat routines... 969 */ 970#if defined(COMPAT_43) 971 term = tp->t_termios; 972 oldcmd = cmd; 973 error = ttsetcompat(tp, &cmd, data, &term); 974 if (error != 0) 975 return (error); 976 if (cmd != oldcmd) 977 data = (caddr_t)&term; 978#endif 979 /* 980 * Do the initial / lock state business 981 */ 982 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 983 int cc; 984 struct termios *dt = (struct termios *)data; 985 struct termios *lt = mynor & SI_CALLOUT_MASK 986 ? &pp->sp_lout : &pp->sp_lin; 987 988 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 989 (dt->c_iflag & ~lt->c_iflag); 990 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 991 (dt->c_oflag & ~lt->c_oflag); 992 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 993 (dt->c_cflag & ~lt->c_cflag); 994 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 995 (dt->c_lflag & ~lt->c_lflag); 996 for (cc = 0; cc < NCCS; ++cc) 997 if (lt->c_cc[cc] != 0) 998 dt->c_cc[cc] = tp->t_cc[cc]; 999 if (lt->c_ispeed != 0) 1000 dt->c_ispeed = tp->t_ispeed; 1001 if (lt->c_ospeed != 0) 1002 dt->c_ospeed = tp->t_ospeed; 1003 } 1004 1005 /* 1006 * Block user-level writes to give the ttywait() 1007 * a chance to completely drain for commands 1008 * that require the port to be in a quiescent state. 1009 */ 1010 switch (cmd) { 1011 case TIOCSETAW: 1012 case TIOCSETAF: 1013 case TIOCDRAIN: 1014#ifdef COMPAT_43 1015 case TIOCSETP: 1016#endif 1017 blocked++; /* block writes for ttywait() and siparam() */ 1018 si_write_enable(pp, 0); 1019 } 1020 1021 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 1022 if (error != ENOIOCTL) 1023 goto out; 1024 1025 oldspl = spltty(); 1026 1027 error = ttioctl(tp, cmd, data, flag); 1028 si_disc_optim(tp, &tp->t_termios, pp); 1029 if (error != ENOIOCTL) { 1030 splx(oldspl); 1031 goto out; 1032 } 1033 1034 error = 0; 1035 switch (cmd) { 1036 case TIOCSBRK: 1037 si_command(pp, SBREAK, SI_WAIT); 1038 break; 1039 case TIOCCBRK: 1040 si_command(pp, EBREAK, SI_WAIT); 1041 break; 1042 case TIOCSDTR: 1043 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1044 break; 1045 case TIOCCDTR: 1046 (void) si_modem(pp, SET, 0); 1047 break; 1048 case TIOCMSET: 1049 (void) si_modem(pp, SET, *(int *)data); 1050 break; 1051 case TIOCMBIS: 1052 (void) si_modem(pp, BIS, *(int *)data); 1053 break; 1054 case TIOCMBIC: 1055 (void) si_modem(pp, BIC, *(int *)data); 1056 break; 1057 case TIOCMGET: 1058 *(int *)data = si_modem(pp, GET, 0); 1059 break; 1060 case TIOCMSDTRWAIT: 1061 /* must be root since the wait applies to following logins */ 1062 error = suser(td); 1063 if (error == 0) 1064 pp->sp_dtr_wait = *(int *)data * hz / 100; 1065 break; 1066 case TIOCMGDTRWAIT: 1067 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1068 break; 1069 default: 1070 error = ENOTTY; 1071 } 1072 splx(oldspl); 1073 1074out: 1075 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1076 if (blocked) 1077 si_write_enable(pp, 1); 1078 return(error); 1079} 1080 1081/* 1082 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1083 */ 1084static int 1085si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1086{ 1087 struct si_softc *xsc; 1088 struct si_port *xpp; 1089 volatile struct si_reg *regp; 1090 struct si_tcsi *dp; 1091 struct si_pstat *sps; 1092 int *ip, error = 0; 1093 int oldspl; 1094 int card, port; 1095 int mynor = minor(dev); 1096 1097 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1098 devtoname(dev), cmd, data, flag)); 1099 1100#if 1 1101 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1102 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1103 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1104#endif 1105 1106 if (!IS_CONTROLDEV(mynor)) { 1107 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1108 return(ENODEV); 1109 } 1110 1111 oldspl = spltty(); /* better safe than sorry */ 1112 1113 ip = (int *)data; 1114 1115#define SUCHECK if ((error = suser(td))) goto out 1116 1117 switch (cmd) { 1118 case TCSIPORTS: 1119 *ip = si_Nports; 1120 goto out; 1121 case TCSIMODULES: 1122 *ip = si_Nmodules; 1123 goto out; 1124 case TCSISDBG_ALL: 1125 SUCHECK; 1126 si_debug = *ip; 1127 goto out; 1128 case TCSIGDBG_ALL: 1129 *ip = si_debug; 1130 goto out; 1131 default: 1132 /* 1133 * Check that a controller for this port exists 1134 */ 1135 1136 /* may also be a struct si_pstat, a superset of si_tcsi */ 1137 1138 dp = (struct si_tcsi *)data; 1139 sps = (struct si_pstat *)data; 1140 card = dp->tc_card; 1141 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1142 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1143 error = ENOENT; 1144 goto out; 1145 } 1146 /* 1147 * And check that a port exists 1148 */ 1149 port = dp->tc_port; 1150 if (port < 0 || port >= xsc->sc_nport) { 1151 error = ENOENT; 1152 goto out; 1153 } 1154 xpp = xsc->sc_ports + port; 1155 regp = (struct si_reg *)xsc->sc_maddr; 1156 } 1157 1158 switch (cmd) { 1159 case TCSIDEBUG: 1160#ifdef SI_DEBUG 1161 SUCHECK; 1162 if (xpp->sp_debug) 1163 xpp->sp_debug = 0; 1164 else { 1165 xpp->sp_debug = DBG_ALL; 1166 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1167 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1168 } 1169 break; 1170#else 1171 error = ENODEV; 1172 goto out; 1173#endif 1174 case TCSISDBG_LEVEL: 1175 case TCSIGDBG_LEVEL: 1176#ifdef SI_DEBUG 1177 if (cmd == TCSIGDBG_LEVEL) { 1178 dp->tc_dbglvl = xpp->sp_debug; 1179 } else { 1180 SUCHECK; 1181 xpp->sp_debug = dp->tc_dbglvl; 1182 } 1183 break; 1184#else 1185 error = ENODEV; 1186 goto out; 1187#endif 1188 case TCSIGRXIT: 1189 dp->tc_int = regp->rx_int_count; 1190 break; 1191 case TCSIRXIT: 1192 SUCHECK; 1193 regp->rx_int_count = dp->tc_int; 1194 break; 1195 case TCSIGIT: 1196 dp->tc_int = regp->int_count; 1197 break; 1198 case TCSIIT: 1199 SUCHECK; 1200 regp->int_count = dp->tc_int; 1201 break; 1202 case TCSISTATE: 1203 dp->tc_int = xpp->sp_ccb->hi_ip; 1204 break; 1205 /* these next three use a different structure */ 1206 case TCSI_PORT: 1207 SUCHECK; 1208 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1209 break; 1210 case TCSI_CCB: 1211 SUCHECK; 1212 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1213 break; 1214 case TCSI_TTY: 1215 SUCHECK; 1216 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1217 break; 1218 default: 1219 error = EINVAL; 1220 goto out; 1221 } 1222out: 1223 splx(oldspl); 1224 return(error); /* success */ 1225} 1226 1227/* 1228 * siparam() : Configure line params 1229 * called at spltty(); 1230 * this may sleep, does not flush, nor wait for drain, nor block writes 1231 * caller must arrange this if it's important.. 1232 */ 1233static int 1234siparam(struct tty *tp, struct termios *t) 1235{ 1236 struct si_port *pp = TP2PP(tp); 1237 volatile struct si_channel *ccbp; 1238 int oldspl, cflag, iflag, oflag, lflag; 1239 int error = 0; /* shutup gcc */ 1240 int ispeed = 0; /* shutup gcc */ 1241 int ospeed = 0; /* shutup gcc */ 1242 BYTE val; 1243 1244 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1245 cflag = t->c_cflag; 1246 iflag = t->c_iflag; 1247 oflag = t->c_oflag; 1248 lflag = t->c_lflag; 1249 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1250 oflag, cflag, iflag, lflag)); 1251 1252 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1253 1254 /* if not hung up.. */ 1255 if (t->c_ospeed != 0) { 1256 /* translate baud rate to firmware values */ 1257 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1258 ispeed = t->c_ispeed ? 1259 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1260 1261 /* enforce legit baud rate */ 1262 if (ospeed < 0 || ispeed < 0) 1263 return (EINVAL); 1264 } 1265 1266 oldspl = spltty(); 1267 1268 ccbp = pp->sp_ccb; 1269 1270 /* ========== set hi_break ========== */ 1271 val = 0; 1272 if (iflag & IGNBRK) /* Breaks */ 1273 val |= BR_IGN; 1274 if (iflag & BRKINT) /* Interrupt on break? */ 1275 val |= BR_INT; 1276 if (iflag & PARMRK) /* Parity mark? */ 1277 val |= BR_PARMRK; 1278 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1279 val |= BR_PARIGN; 1280 ccbp->hi_break = val; 1281 1282 /* ========== set hi_csr ========== */ 1283 /* if not hung up.. */ 1284 if (t->c_ospeed != 0) { 1285 /* Set I/O speeds */ 1286 val = (ispeed << 4) | ospeed; 1287 } 1288 ccbp->hi_csr = val; 1289 1290 /* ========== set hi_mr2 ========== */ 1291 val = 0; 1292 if (cflag & CSTOPB) /* Stop bits */ 1293 val |= MR2_2_STOP; 1294 else 1295 val |= MR2_1_STOP; 1296 /* 1297 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1298 * a DCE, hence the reverse sense of RTS and CTS 1299 */ 1300 /* Output Flow - RTS must be raised before data can be sent */ 1301 if (cflag & CCTS_OFLOW) 1302 val |= MR2_RTSCONT; 1303 1304 ccbp->hi_mr2 = val; 1305 1306 /* ========== set hi_mr1 ========== */ 1307 val = 0; 1308 if (!(cflag & PARENB)) /* Parity */ 1309 val |= MR1_NONE; 1310 else 1311 val |= MR1_WITH; 1312 if (cflag & PARODD) 1313 val |= MR1_ODD; 1314 1315 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1316 val |= MR1_8_BITS; 1317 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1318 val |= MR1_7_BITS; 1319 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1320 val |= MR1_6_BITS; 1321 } else { /* Must be 5 */ 1322 val |= MR1_5_BITS; 1323 } 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 /* Input Flow - CTS is raised when port is ready to receive data */ 1329 if (cflag & CRTS_IFLOW) 1330 val |= MR1_CTSCONT; 1331 1332 ccbp->hi_mr1 = val; 1333 1334 /* ========== set hi_mask ========== */ 1335 val = 0xff; 1336 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1337 val &= 0xFF; 1338 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1339 val &= 0x7F; 1340 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1341 val &= 0x3F; 1342 } else { /* Must be 5 */ 1343 val &= 0x1F; 1344 } 1345 if (iflag & ISTRIP) 1346 val &= 0x7F; 1347 1348 ccbp->hi_mask = val; 1349 1350 /* ========== set hi_prtcl ========== */ 1351 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1352 if (iflag & IXANY) 1353 val |= SP_TANY; 1354 if (iflag & IXON) 1355 val |= SP_TXEN; 1356 if (iflag & IXOFF) 1357 val |= SP_RXEN; 1358 if (iflag & INPCK) 1359 val |= SP_PAEN; 1360 1361 ccbp->hi_prtcl = val; 1362 1363 1364 /* ========== set hi_{rx|tx}{on|off} ========== */ 1365 /* XXX: the card TOTALLY shields us from the flow control... */ 1366 ccbp->hi_txon = t->c_cc[VSTART]; 1367 ccbp->hi_txoff = t->c_cc[VSTOP]; 1368 1369 ccbp->hi_rxon = t->c_cc[VSTART]; 1370 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1371 1372 /* ========== send settings to the card ========== */ 1373 /* potential sleep here */ 1374 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1375 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1376 else 1377 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1378 1379 /* ========== set DTR etc ========== */ 1380 /* Hangup if ospeed == 0 */ 1381 if (t->c_ospeed == 0) { 1382 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1383 } else { 1384 /* 1385 * If the previous speed was 0, may need to re-enable 1386 * the modem signals 1387 */ 1388 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1389 } 1390 1391 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1392 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1393 1394 splx(oldspl); 1395 return(error); 1396} 1397 1398/* 1399 * Enable or Disable the writes to this channel... 1400 * "state" -> enabled = 1; disabled = 0; 1401 */ 1402static void 1403si_write_enable(struct si_port *pp, int state) 1404{ 1405 int oldspl; 1406 1407 oldspl = spltty(); 1408 1409 if (state) { 1410 pp->sp_state &= ~SS_BLOCKWRITE; 1411 if (pp->sp_state & SS_WAITWRITE) { 1412 pp->sp_state &= ~SS_WAITWRITE; 1413 /* thunder away! */ 1414 wakeup(pp); 1415 } 1416 } else { 1417 pp->sp_state |= SS_BLOCKWRITE; 1418 } 1419 1420 splx(oldspl); 1421} 1422 1423/* 1424 * Set/Get state of modem control lines. 1425 * Due to DCE-like behaviour of the adapter, some signals need translation: 1426 * TIOCM_DTR DSR 1427 * TIOCM_RTS CTS 1428 */ 1429static int 1430si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1431{ 1432 volatile struct si_channel *ccbp; 1433 int x; 1434 1435 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1436 ccbp = pp->sp_ccb; /* Find channel address */ 1437 switch (cmd) { 1438 case GET: 1439 x = ccbp->hi_ip; 1440 bits = TIOCM_LE; 1441 if (x & IP_DCD) bits |= TIOCM_CAR; 1442 if (x & IP_DTR) bits |= TIOCM_DTR; 1443 if (x & IP_RTS) bits |= TIOCM_RTS; 1444 if (x & IP_RI) bits |= TIOCM_RI; 1445 return(bits); 1446 case SET: 1447 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1448 /* fall through */ 1449 case BIS: 1450 x = 0; 1451 if (bits & TIOCM_DTR) 1452 x |= OP_DSR; 1453 if (bits & TIOCM_RTS) 1454 x |= OP_CTS; 1455 ccbp->hi_op |= x; 1456 break; 1457 case BIC: 1458 if (bits & TIOCM_DTR) 1459 ccbp->hi_op &= ~OP_DSR; 1460 if (bits & TIOCM_RTS) 1461 ccbp->hi_op &= ~OP_CTS; 1462 } 1463 return 0; 1464} 1465 1466/* 1467 * Handle change of modem state 1468 */ 1469static void 1470si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1471{ 1472 /* if a modem dev */ 1473 if (hi_ip & IP_DCD) { 1474 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1475 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1476 tp->t_line)); 1477 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1478 } 1479 } else { 1480 if (pp->sp_last_hi_ip & IP_DCD) { 1481 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1482 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1483 (void) si_modem(pp, SET, 0); 1484 } 1485 } 1486 pp->sp_last_hi_ip = hi_ip; 1487 1488} 1489 1490/* 1491 * Poller to catch missed interrupts. 1492 * 1493 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1494 * better response. We could really use a "periodic" version timeout(). :-) 1495 */ 1496#ifdef POLL 1497static void 1498si_poll(void *nothing) 1499{ 1500 struct si_softc *sc; 1501 int i; 1502 volatile struct si_reg *regp; 1503 struct si_port *pp; 1504 int lost, oldspl, port; 1505 1506 DPRINT((0, DBG_POLL, "si_poll()\n")); 1507 oldspl = spltty(); 1508 if (in_intr) 1509 goto out; 1510 lost = 0; 1511 for (i = 0; i < si_numunits; i++) { 1512 sc = devclass_get_softc(si_devclass, i); 1513 if (sc == NULL || sc->sc_type == SIEMPTY) 1514 continue; 1515 regp = (struct si_reg *)sc->sc_maddr; 1516 1517 /* 1518 * See if there has been a pending interrupt for 2 seconds 1519 * or so. The test (int_scounter >= 200) won't correspond 1520 * to 2 seconds if int_count gets changed. 1521 */ 1522 if (regp->int_pending != 0) { 1523 if (regp->int_scounter >= 200 && 1524 regp->initstat == 1) { 1525 printf("si%d: lost intr\n", i); 1526 lost++; 1527 } 1528 } else { 1529 regp->int_scounter = 0; 1530 } 1531 1532 /* 1533 * gripe about no input flow control.. 1534 */ 1535 pp = sc->sc_ports; 1536 for (port = 0; port < sc->sc_nport; pp++, port++) { 1537 if (pp->sp_delta_overflows > 0) { 1538 printf("si%d: %d tty level buffer overflows\n", 1539 i, pp->sp_delta_overflows); 1540 pp->sp_delta_overflows = 0; 1541 } 1542 } 1543 } 1544 if (lost || si_realpoll) 1545 si_intr(NULL); /* call intr with fake vector */ 1546out: 1547 splx(oldspl); 1548 1549 timeout(si_poll, (caddr_t)0L, si_pollrate); 1550} 1551#endif /* ifdef POLL */ 1552 1553/* 1554 * The interrupt handler polls ALL ports on ALL adapters each time 1555 * it is called. 1556 */ 1557 1558static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1559static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1560 1561void 1562si_intr(void *arg) 1563{ 1564 struct si_softc *sc; 1565 struct si_port *pp; 1566 volatile struct si_channel *ccbp; 1567 struct tty *tp; 1568 volatile caddr_t maddr; 1569 BYTE op, ip; 1570 int x, card, port, n, i, isopen; 1571 volatile BYTE *z; 1572 BYTE c; 1573 1574 sc = arg; 1575 1576 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1577 if (in_intr) 1578 return; 1579 in_intr = 1; 1580 1581 /* 1582 * When we get an int we poll all the channels and do ALL pending 1583 * work, not just the first one we find. This allows all cards to 1584 * share the same vector. 1585 * 1586 * XXX - But if we're sharing the vector with something that's NOT 1587 * a SI/XIO/SX card, we may be making more work for ourselves. 1588 */ 1589 for (card = 0; card < si_numunits; card++) { 1590 sc = devclass_get_softc(si_devclass, card); 1591 if (sc == NULL || sc->sc_type == SIEMPTY) 1592 continue; 1593 1594 /* 1595 * First, clear the interrupt 1596 */ 1597 switch(sc->sc_type) { 1598 case SIHOST: 1599 maddr = sc->sc_maddr; 1600 ((volatile struct si_reg *)maddr)->int_pending = 0; 1601 /* flag nothing pending */ 1602 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1603 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1604 break; 1605 case SIHOST2: 1606 maddr = sc->sc_maddr; 1607 ((volatile struct si_reg *)maddr)->int_pending = 0; 1608 *(maddr+SIPLIRQCLR) = 0x00; 1609 *(maddr+SIPLIRQCLR) = 0x10; 1610 break; 1611 case SIPCI: 1612 maddr = sc->sc_maddr; 1613 ((volatile struct si_reg *)maddr)->int_pending = 0; 1614 *(maddr+SIPCIINTCL) = 0x0; 1615 break; 1616 case SIJETPCI: /* fall through to JETISA case */ 1617 case SIJETISA: 1618 maddr = sc->sc_maddr; 1619 ((volatile struct si_reg *)maddr)->int_pending = 0; 1620 *(maddr+SIJETINTCL) = 0x0; 1621 break; 1622 case SIEISA: 1623 maddr = sc->sc_maddr; 1624 ((volatile struct si_reg *)maddr)->int_pending = 0; 1625 (void)inb(sc->sc_iobase + 3); 1626 break; 1627 case SIEMPTY: 1628 default: 1629 continue; 1630 } 1631 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1632 1633 /* 1634 * check each port 1635 */ 1636 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1637 pp++, port++) { 1638 ccbp = pp->sp_ccb; 1639 tp = pp->sp_tty; 1640 1641 /* 1642 * See if a command has completed ? 1643 */ 1644 if (ccbp->hi_stat != pp->sp_pend) { 1645 DPRINT((pp, DBG_INTR, 1646 "si_intr hi_stat = 0x%x, pend = %d\n", 1647 ccbp->hi_stat, pp->sp_pend)); 1648 switch(pp->sp_pend) { 1649 case LOPEN: 1650 case MPEND: 1651 case MOPEN: 1652 case CONFIG: 1653 case SBREAK: 1654 case EBREAK: 1655 pp->sp_pend = ccbp->hi_stat; 1656 /* sleeping in si_command */ 1657 wakeup(&pp->sp_state); 1658 break; 1659 default: 1660 pp->sp_pend = ccbp->hi_stat; 1661 } 1662 } 1663 1664 /* 1665 * Continue on if it's closed 1666 */ 1667 if (ccbp->hi_stat == IDLE_CLOSE) { 1668 continue; 1669 } 1670 1671 /* 1672 * Do modem state change if not a local device 1673 */ 1674 si_modem_state(pp, tp, ccbp->hi_ip); 1675 1676 /* 1677 * Check to see if we should 'receive' characters. 1678 */ 1679 if (tp->t_state & TS_CONNECTED && 1680 tp->t_state & TS_ISOPEN) 1681 isopen = 1; 1682 else 1683 isopen = 0; 1684 1685 /* 1686 * Do input break processing 1687 */ 1688 if (ccbp->hi_state & ST_BREAK) { 1689 if (isopen) { 1690 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1691 } 1692 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1693 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1694 } 1695 1696 /* 1697 * Do RX stuff - if not open then dump any characters. 1698 * XXX: This is VERY messy and needs to be cleaned up. 1699 * 1700 * XXX: can we leave data in the host adapter buffer 1701 * when the clists are full? That may be dangerous 1702 * if the user cannot get an interrupt signal through. 1703 */ 1704 1705 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1706 1707 if (!isopen) { 1708 ccbp->hi_rxopos = ccbp->hi_rxipos; 1709 goto end_rx; 1710 } 1711 1712 /* 1713 * If the tty input buffers are blocked, stop emptying 1714 * the incoming buffers and let the auto flow control 1715 * assert.. 1716 */ 1717 if (tp->t_state & TS_TBLOCK) { 1718 goto end_rx; 1719 } 1720 1721 /* 1722 * Process read characters if not skipped above 1723 */ 1724 op = ccbp->hi_rxopos; 1725 ip = ccbp->hi_rxipos; 1726 c = ip - op; 1727 if (c == 0) { 1728 goto end_rx; 1729 } 1730 1731 n = c & 0xff; 1732 if (n > 250) 1733 n = 250; 1734 1735 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1736 n, op, ip)); 1737 1738 /* 1739 * Suck characters out of host card buffer into the 1740 * "input staging buffer" - so that we dont leave the 1741 * host card in limbo while we're possibly echoing 1742 * characters and possibly flushing input inside the 1743 * ldisc l_rint() routine. 1744 */ 1745 if (n <= SI_BUFFERSIZE - op) { 1746 1747 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1748 z = ccbp->hi_rxbuf + op; 1749 si_vbcopy(z, si_rxbuf, n); 1750 1751 op += n; 1752 } else { 1753 x = SI_BUFFERSIZE - op; 1754 1755 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1756 z = ccbp->hi_rxbuf + op; 1757 si_vbcopy(z, si_rxbuf, x); 1758 1759 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1760 n - x)); 1761 z = ccbp->hi_rxbuf; 1762 si_vbcopy(z, si_rxbuf + x, n - x); 1763 1764 op += n; 1765 } 1766 1767 /* clear collected characters from buffer */ 1768 ccbp->hi_rxopos = op; 1769 1770 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1771 n, op, ip)); 1772 1773 /* 1774 * at this point... 1775 * n = number of chars placed in si_rxbuf 1776 */ 1777 1778 /* 1779 * Avoid the grotesquely inefficient lineswitch 1780 * routine (ttyinput) in "raw" mode. It usually 1781 * takes about 450 instructions (that's without 1782 * canonical processing or echo!). slinput is 1783 * reasonably fast (usually 40 instructions 1784 * plus call overhead). 1785 */ 1786 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1787 1788 /* block if the driver supports it */ 1789 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1790 (tp->t_cflag & CRTS_IFLOW || 1791 tp->t_iflag & IXOFF) && 1792 !(tp->t_state & TS_TBLOCK)) 1793 ttyblock(tp); 1794 1795 tk_nin += n; 1796 tk_rawcc += n; 1797 tp->t_rawcc += n; 1798 1799 pp->sp_delta_overflows += 1800 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1801 1802 ttwakeup(tp); 1803 if (tp->t_state & TS_TTSTOP && 1804 (tp->t_iflag & IXANY || 1805 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1806 tp->t_state &= ~TS_TTSTOP; 1807 tp->t_lflag &= ~FLUSHO; 1808 si_start(tp); 1809 } 1810 } else { 1811 /* 1812 * It'd be nice to not have to go through the 1813 * function call overhead for each char here. 1814 * It'd be nice to block input it, saving a 1815 * loop here and the call/return overhead. 1816 */ 1817 for(x = 0; x < n; x++) { 1818 i = si_rxbuf[x]; 1819 if ((*linesw[tp->t_line].l_rint)(i, tp) 1820 == -1) { 1821 pp->sp_delta_overflows++; 1822 } 1823 } 1824 } 1825 goto more_rx; /* try for more until RXbuf is empty */ 1826 1827 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1828 1829 /* 1830 * Do TX stuff 1831 */ 1832 (*linesw[tp->t_line].l_start)(tp); 1833 1834 } /* end of for (all ports on this controller) */ 1835 } /* end of for (all controllers) */ 1836 1837 in_intr = 0; 1838 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1839} 1840 1841/* 1842 * Nudge the transmitter... 1843 * 1844 * XXX: I inherited some funny code here. It implies the host card only 1845 * interrupts when the transmit buffer reaches the low-water-mark, and does 1846 * not interrupt when it's actually hits empty. In some cases, we have 1847 * processes waiting for complete drain, and we need to simulate an interrupt 1848 * about when we think the buffer is going to be empty (and retry if not). 1849 * I really am not certain about this... I *need* the hardware manuals. 1850 */ 1851static void 1852si_start(struct tty *tp) 1853{ 1854 struct si_port *pp; 1855 volatile struct si_channel *ccbp; 1856 struct clist *qp; 1857 BYTE ipos; 1858 int nchar; 1859 int oldspl, count, n, amount, buffer_full; 1860 1861 oldspl = spltty(); 1862 1863 qp = &tp->t_outq; 1864 pp = TP2PP(tp); 1865 1866 DPRINT((pp, DBG_ENTRY|DBG_START, 1867 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1868 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1869 1870 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1871 goto out; 1872 1873 buffer_full = 0; 1874 ccbp = pp->sp_ccb; 1875 1876 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1877 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1878 1879 while ((nchar = qp->c_cc) > 0) { 1880 if ((BYTE)count >= 255) { 1881 buffer_full++; 1882 break; 1883 } 1884 amount = min(nchar, (255 - (BYTE)count)); 1885 ipos = (unsigned int)ccbp->hi_txipos; 1886 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1887 /* will it fit in one lump? */ 1888 if ((SI_BUFFERSIZE - ipos) >= n) { 1889 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1890 } else { 1891 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1892 SI_BUFFERSIZE - ipos); 1893 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1894 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1895 } 1896 ccbp->hi_txipos += n; 1897 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1898 } 1899 1900 if (count != 0 && nchar == 0) { 1901 tp->t_state |= TS_BUSY; 1902 } else { 1903 tp->t_state &= ~TS_BUSY; 1904 } 1905 1906 /* wakeup time? */ 1907 ttwwakeup(tp); 1908 1909 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1910 (BYTE)count, nchar, tp->t_state)); 1911 1912 if (tp->t_state & TS_BUSY) 1913 { 1914 int time; 1915 1916 time = ttspeedtab(tp->t_ospeed, chartimes); 1917 1918 if (time > 0) { 1919 if (time < nchar) 1920 time = nchar / time; 1921 else 1922 time = 2; 1923 } else { 1924 DPRINT((pp, DBG_START, 1925 "bad char time value! %d\n", time)); 1926 time = hz/10; 1927 } 1928 1929 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1930 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1931 } else { 1932 pp->sp_state |= SS_LSTART; 1933 } 1934 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1935 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1936 } 1937 1938out: 1939 splx(oldspl); 1940 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1941} 1942 1943/* 1944 * Note: called at splsoftclock from the timeout code 1945 * This has to deal with two things... cause wakeups while waiting for 1946 * tty drains on last process exit, and call l_start at about the right 1947 * time for protocols like ppp. 1948 */ 1949static void 1950si_lstart(void *arg) 1951{ 1952 struct si_port *pp = arg; 1953 struct tty *tp; 1954 int oldspl; 1955 1956 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1957 pp, pp->sp_state)); 1958 1959 oldspl = spltty(); 1960 1961 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1962 splx(oldspl); 1963 return; 1964 } 1965 pp->sp_state &= ~SS_LSTART; 1966 pp->sp_state |= SS_INLSTART; 1967 1968 tp = pp->sp_tty; 1969 1970 /* deal with the process exit case */ 1971 ttwwakeup(tp); 1972 1973 /* nudge protocols - eg: ppp */ 1974 (*linesw[tp->t_line].l_start)(tp); 1975 1976 pp->sp_state &= ~SS_INLSTART; 1977 splx(oldspl); 1978} 1979 1980/* 1981 * Stop output on a line. called at spltty(); 1982 */ 1983static void 1984si_stop(struct tty *tp, int rw) 1985{ 1986 volatile struct si_channel *ccbp; 1987 struct si_port *pp; 1988 1989 pp = TP2PP(tp); 1990 ccbp = pp->sp_ccb; 1991 1992 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1993 1994 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1995 if (rw & FWRITE) { 1996 /* what level are we meant to be flushing anyway? */ 1997 if (tp->t_state & TS_BUSY) { 1998 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 1999 tp->t_state &= ~TS_BUSY; 2000 ttwwakeup(tp); /* Bruce???? */ 2001 } 2002 } 2003#if 1 /* XXX: this doesn't work right yet.. */ 2004 /* XXX: this may have been failing because we used to call l_rint() 2005 * while we were looping based on these two counters. Now, we collect 2006 * the data and then loop stuffing it into l_rint(), making this 2007 * useless. Should we cause this to blow away the staging buffer? 2008 */ 2009 if (rw & FREAD) { 2010 ccbp->hi_rxopos = ccbp->hi_rxipos; 2011 } 2012#endif 2013} 2014 2015/* 2016 * Issue a command to the host card CPU. 2017 */ 2018 2019static void 2020si_command(struct si_port *pp, int cmd, int waitflag) 2021{ 2022 int oldspl; 2023 volatile struct si_channel *ccbp = pp->sp_ccb; 2024 int x; 2025 2026 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2027 pp, cmd, waitflag, ccbp->hi_stat)); 2028 2029 oldspl = spltty(); /* Keep others out */ 2030 2031 /* wait until it's finished what it was doing.. */ 2032 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2033 * is turned off. */ 2034 while((x = ccbp->hi_stat) != IDLE_OPEN && 2035 x != IDLE_CLOSE && 2036 x != IDLE_BREAK && 2037 x != cmd) { 2038 if (in_intr) { /* Prevent sleep in intr */ 2039 DPRINT((pp, DBG_PARAM, 2040 "cmd intr collision - completing %d\trequested %d\n", 2041 x, cmd)); 2042 splx(oldspl); 2043 return; 2044 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2045 "sicmd1", 1)) { 2046 splx(oldspl); 2047 return; 2048 } 2049 } 2050 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2051 2052 /* if there was a pending command, cause a state-change wakeup */ 2053 switch(pp->sp_pend) { 2054 case LOPEN: 2055 case MPEND: 2056 case MOPEN: 2057 case CONFIG: 2058 case SBREAK: 2059 case EBREAK: 2060 wakeup(&pp->sp_state); 2061 break; 2062 default: 2063 break; 2064 } 2065 2066 pp->sp_pend = cmd; /* New command pending */ 2067 ccbp->hi_stat = cmd; /* Post it */ 2068 2069 if (waitflag) { 2070 if (in_intr) { /* If in interrupt handler */ 2071 DPRINT((pp, DBG_PARAM, 2072 "attempt to sleep in si_intr - cmd req %d\n", 2073 cmd)); 2074 splx(oldspl); 2075 return; 2076 } else while(ccbp->hi_stat != IDLE_OPEN && 2077 ccbp->hi_stat != IDLE_BREAK) { 2078 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2079 "sicmd2", 0)) 2080 break; 2081 } 2082 } 2083 splx(oldspl); 2084} 2085 2086static void 2087si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2088{ 2089 /* 2090 * XXX can skip a lot more cases if Smarts. Maybe 2091 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2092 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2093 */ 2094 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2095 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2096 (!(t->c_iflag & PARMRK) || 2097 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2098 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2099 linesw[tp->t_line].l_rint == ttyinput) 2100 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2101 else 2102 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2103 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2104 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2105 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2106 pp->sp_hotchar)); 2107} 2108 2109 2110#ifdef SI_DEBUG 2111 2112void 2113si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2114{ 2115 va_list ap; 2116 2117 if ((pp == NULL && (si_debug&flags)) || 2118 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2119 if (pp != NULL) 2120 printf("%ci%d(%d): ", 's', 2121 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2122 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2123 va_start(ap, fmt); 2124 vprintf(fmt, ap); 2125 va_end(ap); 2126 } 2127} 2128 2129static char * 2130si_mctl2str(enum si_mctl cmd) 2131{ 2132 switch (cmd) { 2133 case GET: 2134 return("GET"); 2135 case SET: 2136 return("SET"); 2137 case BIS: 2138 return("BIS"); 2139 case BIC: 2140 return("BIC"); 2141 } 2142 return("BAD"); 2143} 2144 2145#endif /* DEBUG */ 2146 2147static char * 2148si_modulename(int host_type, int uart_type) 2149{ 2150 switch (host_type) { 2151 /* Z280 based cards */ 2152 case SIEISA: 2153 case SIHOST2: 2154 case SIHOST: 2155 case SIPCI: 2156 switch (uart_type) { 2157 case 0: 2158 return(" (XIO)"); 2159 case 1: 2160 return(" (SI)"); 2161 } 2162 break; 2163 /* T225 based hosts */ 2164 case SIJETPCI: 2165 case SIJETISA: 2166 switch (uart_type) { 2167 case 0: 2168 return(" (SI)"); 2169 case 40: 2170 return(" (XIO)"); 2171 case 72: 2172 return(" (SXDC)"); 2173 } 2174 break; 2175 } 2176 return(""); 2177} 2178