si.c revision 130057
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 130057 2004-06-04 08:02:37Z 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 sihardclose(pp); 810 ttyclose(tp); 811 pp->sp_state &= ~SS_OPEN; 812 813out: 814 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 815 splx(oldspl); 816 return(error); 817} 818 819static void 820sihardclose(struct si_port *pp) 821{ 822 int oldspl; 823 struct tty *tp; 824 volatile struct si_channel *ccbp; 825 826 oldspl = spltty(); 827 828 tp = pp->sp_tty; 829 ccbp = pp->sp_ccb; /* Find control block */ 830 if (tp->t_cflag & HUPCL || 831 (!pp->sp_active_out && 832 !(ccbp->hi_ip & IP_DCD) && 833 !(pp->sp_iin.c_cflag && CLOCAL)) || 834 !(tp->t_state & TS_ISOPEN)) { 835 836 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 837 (void) si_command(pp, FCLOSE, SI_NOWAIT); 838 839 if (pp->sp_dtr_wait != 0) { 840 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 841 pp->sp_state |= SS_DTR_OFF; 842 } 843 844 } 845 pp->sp_active_out = FALSE; 846 wakeup(&pp->sp_active_out); 847 wakeup(TSA_CARR_ON(tp)); 848 849 splx(oldspl); 850} 851 852 853/* 854 * called at splsoftclock()... 855 */ 856static void 857sidtrwakeup(void *chan) 858{ 859 struct si_port *pp; 860 int oldspl; 861 862 oldspl = spltty(); 863 864 pp = (struct si_port *)chan; 865 pp->sp_state &= ~SS_DTR_OFF; 866 wakeup(&pp->sp_dtr_wait); 867 868 splx(oldspl); 869} 870 871static int 872siwrite(dev_t dev, struct uio *uio, int flag) 873{ 874 struct si_port *pp; 875 struct tty *tp; 876 int error = 0; 877 int mynor = minor(dev); 878 int oldspl; 879 880 if (IS_SPECIAL(mynor)) { 881 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 882 return(ENODEV); 883 } 884 pp = MINOR2PP(mynor); 885 tp = pp->sp_tty; 886 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 887 888 oldspl = spltty(); 889 /* 890 * If writes are currently blocked, wait on the "real" tty 891 */ 892 while (pp->sp_state & SS_BLOCKWRITE) { 893 pp->sp_state |= SS_WAITWRITE; 894 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 895 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 896 "siwrite", tp->t_timeout))) { 897 if (error == EWOULDBLOCK) 898 error = EIO; 899 goto out; 900 } 901 } 902 903 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 904out: 905 splx(oldspl); 906 return (error); 907} 908 909 910static int 911siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 912{ 913 struct si_port *pp; 914 struct tty *tp; 915 int error; 916 int mynor = minor(dev); 917 int oldspl; 918 int blocked = 0; 919#if defined(COMPAT_43) 920 u_long oldcmd; 921 struct termios term; 922#endif 923 924 if (IS_SI_IOCTL(cmd)) 925 return(si_Sioctl(dev, cmd, data, flag, td)); 926 927 pp = MINOR2PP(mynor); 928 tp = pp->sp_tty; 929 930 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 931 devtoname(dev), cmd, data, flag)); 932 if (IS_STATE(mynor)) { 933 struct termios *ct; 934 935 switch (mynor & SI_STATE_MASK) { 936 case SI_INIT_STATE_MASK: 937 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 938 break; 939 case SI_LOCK_STATE_MASK: 940 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 941 break; 942 default: 943 return (ENODEV); 944 } 945 switch (cmd) { 946 case TIOCSETA: 947 error = suser(td); 948 if (error != 0) 949 return (error); 950 *ct = *(struct termios *)data; 951 return (0); 952 case TIOCGETA: 953 *(struct termios *)data = *ct; 954 return (0); 955 case TIOCGETD: 956 *(int *)data = TTYDISC; 957 return (0); 958 case TIOCGWINSZ: 959 bzero(data, sizeof(struct winsize)); 960 return (0); 961 default: 962 return (ENOTTY); 963 } 964 } 965 /* 966 * Do the old-style ioctl compat routines... 967 */ 968#if defined(COMPAT_43) 969 term = tp->t_termios; 970 oldcmd = cmd; 971 error = ttsetcompat(tp, &cmd, data, &term); 972 if (error != 0) 973 return (error); 974 if (cmd != oldcmd) 975 data = (caddr_t)&term; 976#endif 977 /* 978 * Do the initial / lock state business 979 */ 980 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 981 int cc; 982 struct termios *dt = (struct termios *)data; 983 struct termios *lt = mynor & SI_CALLOUT_MASK 984 ? &pp->sp_lout : &pp->sp_lin; 985 986 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 987 (dt->c_iflag & ~lt->c_iflag); 988 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 989 (dt->c_oflag & ~lt->c_oflag); 990 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 991 (dt->c_cflag & ~lt->c_cflag); 992 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 993 (dt->c_lflag & ~lt->c_lflag); 994 for (cc = 0; cc < NCCS; ++cc) 995 if (lt->c_cc[cc] != 0) 996 dt->c_cc[cc] = tp->t_cc[cc]; 997 if (lt->c_ispeed != 0) 998 dt->c_ispeed = tp->t_ispeed; 999 if (lt->c_ospeed != 0) 1000 dt->c_ospeed = tp->t_ospeed; 1001 } 1002 1003 /* 1004 * Block user-level writes to give the ttywait() 1005 * a chance to completely drain for commands 1006 * that require the port to be in a quiescent state. 1007 */ 1008 switch (cmd) { 1009 case TIOCSETAW: 1010 case TIOCSETAF: 1011 case TIOCDRAIN: 1012#ifdef COMPAT_43 1013 case TIOCSETP: 1014#endif 1015 blocked++; /* block writes for ttywait() and siparam() */ 1016 si_write_enable(pp, 0); 1017 } 1018 1019 error = ttyioctl(dev, cmd, data, flag, td); 1020 si_disc_optim(tp, &tp->t_termios, pp); 1021 if (error != ENOTTY) 1022 goto out; 1023 1024 oldspl = spltty(); 1025 1026 error = 0; 1027 switch (cmd) { 1028 case TIOCSBRK: 1029 si_command(pp, SBREAK, SI_WAIT); 1030 break; 1031 case TIOCCBRK: 1032 si_command(pp, EBREAK, SI_WAIT); 1033 break; 1034 case TIOCSDTR: 1035 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1036 break; 1037 case TIOCCDTR: 1038 (void) si_modem(pp, SET, 0); 1039 break; 1040 case TIOCMSET: 1041 (void) si_modem(pp, SET, *(int *)data); 1042 break; 1043 case TIOCMBIS: 1044 (void) si_modem(pp, BIS, *(int *)data); 1045 break; 1046 case TIOCMBIC: 1047 (void) si_modem(pp, BIC, *(int *)data); 1048 break; 1049 case TIOCMGET: 1050 *(int *)data = si_modem(pp, GET, 0); 1051 break; 1052 case TIOCMSDTRWAIT: 1053 /* must be root since the wait applies to following logins */ 1054 error = suser(td); 1055 if (error == 0) 1056 pp->sp_dtr_wait = *(int *)data * hz / 100; 1057 break; 1058 case TIOCMGDTRWAIT: 1059 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1060 break; 1061 default: 1062 error = ENOTTY; 1063 } 1064 splx(oldspl); 1065 1066out: 1067 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1068 if (blocked) 1069 si_write_enable(pp, 1); 1070 return(error); 1071} 1072 1073/* 1074 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1075 */ 1076static int 1077si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1078{ 1079 struct si_softc *xsc; 1080 struct si_port *xpp; 1081 volatile struct si_reg *regp; 1082 struct si_tcsi *dp; 1083 struct si_pstat *sps; 1084 int *ip, error = 0; 1085 int oldspl; 1086 int card, port; 1087 int mynor = minor(dev); 1088 1089 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1090 devtoname(dev), cmd, data, flag)); 1091 1092#if 1 1093 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1094 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1095 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1096#endif 1097 1098 if (!IS_CONTROLDEV(mynor)) { 1099 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1100 return(ENODEV); 1101 } 1102 1103 oldspl = spltty(); /* better safe than sorry */ 1104 1105 ip = (int *)data; 1106 1107#define SUCHECK if ((error = suser(td))) goto out 1108 1109 switch (cmd) { 1110 case TCSIPORTS: 1111 *ip = si_Nports; 1112 goto out; 1113 case TCSIMODULES: 1114 *ip = si_Nmodules; 1115 goto out; 1116 case TCSISDBG_ALL: 1117 SUCHECK; 1118 si_debug = *ip; 1119 goto out; 1120 case TCSIGDBG_ALL: 1121 *ip = si_debug; 1122 goto out; 1123 default: 1124 /* 1125 * Check that a controller for this port exists 1126 */ 1127 1128 /* may also be a struct si_pstat, a superset of si_tcsi */ 1129 1130 dp = (struct si_tcsi *)data; 1131 sps = (struct si_pstat *)data; 1132 card = dp->tc_card; 1133 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1134 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1135 error = ENOENT; 1136 goto out; 1137 } 1138 /* 1139 * And check that a port exists 1140 */ 1141 port = dp->tc_port; 1142 if (port < 0 || port >= xsc->sc_nport) { 1143 error = ENOENT; 1144 goto out; 1145 } 1146 xpp = xsc->sc_ports + port; 1147 regp = (struct si_reg *)xsc->sc_maddr; 1148 } 1149 1150 switch (cmd) { 1151 case TCSIDEBUG: 1152#ifdef SI_DEBUG 1153 SUCHECK; 1154 if (xpp->sp_debug) 1155 xpp->sp_debug = 0; 1156 else { 1157 xpp->sp_debug = DBG_ALL; 1158 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1159 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1160 } 1161 break; 1162#else 1163 error = ENODEV; 1164 goto out; 1165#endif 1166 case TCSISDBG_LEVEL: 1167 case TCSIGDBG_LEVEL: 1168#ifdef SI_DEBUG 1169 if (cmd == TCSIGDBG_LEVEL) { 1170 dp->tc_dbglvl = xpp->sp_debug; 1171 } else { 1172 SUCHECK; 1173 xpp->sp_debug = dp->tc_dbglvl; 1174 } 1175 break; 1176#else 1177 error = ENODEV; 1178 goto out; 1179#endif 1180 case TCSIGRXIT: 1181 dp->tc_int = regp->rx_int_count; 1182 break; 1183 case TCSIRXIT: 1184 SUCHECK; 1185 regp->rx_int_count = dp->tc_int; 1186 break; 1187 case TCSIGIT: 1188 dp->tc_int = regp->int_count; 1189 break; 1190 case TCSIIT: 1191 SUCHECK; 1192 regp->int_count = dp->tc_int; 1193 break; 1194 case TCSISTATE: 1195 dp->tc_int = xpp->sp_ccb->hi_ip; 1196 break; 1197 /* these next three use a different structure */ 1198 case TCSI_PORT: 1199 SUCHECK; 1200 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1201 break; 1202 case TCSI_CCB: 1203 SUCHECK; 1204 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1205 break; 1206 case TCSI_TTY: 1207 SUCHECK; 1208 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1209 break; 1210 default: 1211 error = EINVAL; 1212 goto out; 1213 } 1214out: 1215 splx(oldspl); 1216 return(error); /* success */ 1217} 1218 1219/* 1220 * siparam() : Configure line params 1221 * called at spltty(); 1222 * this may sleep, does not flush, nor wait for drain, nor block writes 1223 * caller must arrange this if it's important.. 1224 */ 1225static int 1226siparam(struct tty *tp, struct termios *t) 1227{ 1228 struct si_port *pp = TP2PP(tp); 1229 volatile struct si_channel *ccbp; 1230 int oldspl, cflag, iflag, oflag, lflag; 1231 int error = 0; /* shutup gcc */ 1232 int ispeed = 0; /* shutup gcc */ 1233 int ospeed = 0; /* shutup gcc */ 1234 BYTE val; 1235 1236 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1237 cflag = t->c_cflag; 1238 iflag = t->c_iflag; 1239 oflag = t->c_oflag; 1240 lflag = t->c_lflag; 1241 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1242 oflag, cflag, iflag, lflag)); 1243 1244 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1245 1246 /* if not hung up.. */ 1247 if (t->c_ospeed != 0) { 1248 /* translate baud rate to firmware values */ 1249 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1250 ispeed = t->c_ispeed ? 1251 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1252 1253 /* enforce legit baud rate */ 1254 if (ospeed < 0 || ispeed < 0) 1255 return (EINVAL); 1256 } 1257 1258 oldspl = spltty(); 1259 1260 ccbp = pp->sp_ccb; 1261 1262 /* ========== set hi_break ========== */ 1263 val = 0; 1264 if (iflag & IGNBRK) /* Breaks */ 1265 val |= BR_IGN; 1266 if (iflag & BRKINT) /* Interrupt on break? */ 1267 val |= BR_INT; 1268 if (iflag & PARMRK) /* Parity mark? */ 1269 val |= BR_PARMRK; 1270 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1271 val |= BR_PARIGN; 1272 ccbp->hi_break = val; 1273 1274 /* ========== set hi_csr ========== */ 1275 /* if not hung up.. */ 1276 if (t->c_ospeed != 0) { 1277 /* Set I/O speeds */ 1278 val = (ispeed << 4) | ospeed; 1279 } 1280 ccbp->hi_csr = val; 1281 1282 /* ========== set hi_mr2 ========== */ 1283 val = 0; 1284 if (cflag & CSTOPB) /* Stop bits */ 1285 val |= MR2_2_STOP; 1286 else 1287 val |= MR2_1_STOP; 1288 /* 1289 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1290 * a DCE, hence the reverse sense of RTS and CTS 1291 */ 1292 /* Output Flow - RTS must be raised before data can be sent */ 1293 if (cflag & CCTS_OFLOW) 1294 val |= MR2_RTSCONT; 1295 1296 ccbp->hi_mr2 = val; 1297 1298 /* ========== set hi_mr1 ========== */ 1299 val = 0; 1300 if (!(cflag & PARENB)) /* Parity */ 1301 val |= MR1_NONE; 1302 else 1303 val |= MR1_WITH; 1304 if (cflag & PARODD) 1305 val |= MR1_ODD; 1306 1307 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1308 val |= MR1_8_BITS; 1309 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1310 val |= MR1_7_BITS; 1311 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1312 val |= MR1_6_BITS; 1313 } else { /* Must be 5 */ 1314 val |= MR1_5_BITS; 1315 } 1316 /* 1317 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1318 * a DCE, hence the reverse sense of RTS and CTS 1319 */ 1320 /* Input Flow - CTS is raised when port is ready to receive data */ 1321 if (cflag & CRTS_IFLOW) 1322 val |= MR1_CTSCONT; 1323 1324 ccbp->hi_mr1 = val; 1325 1326 /* ========== set hi_mask ========== */ 1327 val = 0xff; 1328 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1329 val &= 0xFF; 1330 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1331 val &= 0x7F; 1332 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1333 val &= 0x3F; 1334 } else { /* Must be 5 */ 1335 val &= 0x1F; 1336 } 1337 if (iflag & ISTRIP) 1338 val &= 0x7F; 1339 1340 ccbp->hi_mask = val; 1341 1342 /* ========== set hi_prtcl ========== */ 1343 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1344 if (iflag & IXANY) 1345 val |= SP_TANY; 1346 if (iflag & IXON) 1347 val |= SP_TXEN; 1348 if (iflag & IXOFF) 1349 val |= SP_RXEN; 1350 if (iflag & INPCK) 1351 val |= SP_PAEN; 1352 1353 ccbp->hi_prtcl = val; 1354 1355 1356 /* ========== set hi_{rx|tx}{on|off} ========== */ 1357 /* XXX: the card TOTALLY shields us from the flow control... */ 1358 ccbp->hi_txon = t->c_cc[VSTART]; 1359 ccbp->hi_txoff = t->c_cc[VSTOP]; 1360 1361 ccbp->hi_rxon = t->c_cc[VSTART]; 1362 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1363 1364 /* ========== send settings to the card ========== */ 1365 /* potential sleep here */ 1366 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1367 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1368 else 1369 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1370 1371 /* ========== set DTR etc ========== */ 1372 /* Hangup if ospeed == 0 */ 1373 if (t->c_ospeed == 0) { 1374 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1375 } else { 1376 /* 1377 * If the previous speed was 0, may need to re-enable 1378 * the modem signals 1379 */ 1380 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1381 } 1382 1383 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1384 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1385 1386 splx(oldspl); 1387 return(error); 1388} 1389 1390/* 1391 * Enable or Disable the writes to this channel... 1392 * "state" -> enabled = 1; disabled = 0; 1393 */ 1394static void 1395si_write_enable(struct si_port *pp, int state) 1396{ 1397 int oldspl; 1398 1399 oldspl = spltty(); 1400 1401 if (state) { 1402 pp->sp_state &= ~SS_BLOCKWRITE; 1403 if (pp->sp_state & SS_WAITWRITE) { 1404 pp->sp_state &= ~SS_WAITWRITE; 1405 /* thunder away! */ 1406 wakeup(pp); 1407 } 1408 } else { 1409 pp->sp_state |= SS_BLOCKWRITE; 1410 } 1411 1412 splx(oldspl); 1413} 1414 1415/* 1416 * Set/Get state of modem control lines. 1417 * Due to DCE-like behaviour of the adapter, some signals need translation: 1418 * TIOCM_DTR DSR 1419 * TIOCM_RTS CTS 1420 */ 1421static int 1422si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1423{ 1424 volatile struct si_channel *ccbp; 1425 int x; 1426 1427 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1428 ccbp = pp->sp_ccb; /* Find channel address */ 1429 switch (cmd) { 1430 case GET: 1431 x = ccbp->hi_ip; 1432 bits = TIOCM_LE; 1433 if (x & IP_DCD) bits |= TIOCM_CAR; 1434 if (x & IP_DTR) bits |= TIOCM_DTR; 1435 if (x & IP_RTS) bits |= TIOCM_RTS; 1436 if (x & IP_RI) bits |= TIOCM_RI; 1437 return(bits); 1438 case SET: 1439 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1440 /* fall through */ 1441 case BIS: 1442 x = 0; 1443 if (bits & TIOCM_DTR) 1444 x |= OP_DSR; 1445 if (bits & TIOCM_RTS) 1446 x |= OP_CTS; 1447 ccbp->hi_op |= x; 1448 break; 1449 case BIC: 1450 if (bits & TIOCM_DTR) 1451 ccbp->hi_op &= ~OP_DSR; 1452 if (bits & TIOCM_RTS) 1453 ccbp->hi_op &= ~OP_CTS; 1454 } 1455 return 0; 1456} 1457 1458/* 1459 * Handle change of modem state 1460 */ 1461static void 1462si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1463{ 1464 /* if a modem dev */ 1465 if (hi_ip & IP_DCD) { 1466 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1467 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1468 tp->t_line)); 1469 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1470 } 1471 } else { 1472 if (pp->sp_last_hi_ip & IP_DCD) { 1473 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1474 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1475 (void) si_modem(pp, SET, 0); 1476 } 1477 } 1478 pp->sp_last_hi_ip = hi_ip; 1479 1480} 1481 1482/* 1483 * Poller to catch missed interrupts. 1484 * 1485 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1486 * better response. We could really use a "periodic" version timeout(). :-) 1487 */ 1488#ifdef POLL 1489static void 1490si_poll(void *nothing) 1491{ 1492 struct si_softc *sc; 1493 int i; 1494 volatile struct si_reg *regp; 1495 struct si_port *pp; 1496 int lost, oldspl, port; 1497 1498 DPRINT((0, DBG_POLL, "si_poll()\n")); 1499 oldspl = spltty(); 1500 if (in_intr) 1501 goto out; 1502 lost = 0; 1503 for (i = 0; i < si_numunits; i++) { 1504 sc = devclass_get_softc(si_devclass, i); 1505 if (sc == NULL || sc->sc_type == SIEMPTY) 1506 continue; 1507 regp = (struct si_reg *)sc->sc_maddr; 1508 1509 /* 1510 * See if there has been a pending interrupt for 2 seconds 1511 * or so. The test (int_scounter >= 200) won't correspond 1512 * to 2 seconds if int_count gets changed. 1513 */ 1514 if (regp->int_pending != 0) { 1515 if (regp->int_scounter >= 200 && 1516 regp->initstat == 1) { 1517 printf("si%d: lost intr\n", i); 1518 lost++; 1519 } 1520 } else { 1521 regp->int_scounter = 0; 1522 } 1523 1524 /* 1525 * gripe about no input flow control.. 1526 */ 1527 pp = sc->sc_ports; 1528 for (port = 0; port < sc->sc_nport; pp++, port++) { 1529 if (pp->sp_delta_overflows > 0) { 1530 printf("si%d: %d tty level buffer overflows\n", 1531 i, pp->sp_delta_overflows); 1532 pp->sp_delta_overflows = 0; 1533 } 1534 } 1535 } 1536 if (lost || si_realpoll) 1537 si_intr(NULL); /* call intr with fake vector */ 1538out: 1539 splx(oldspl); 1540 1541 timeout(si_poll, (caddr_t)0L, si_pollrate); 1542} 1543#endif /* ifdef POLL */ 1544 1545/* 1546 * The interrupt handler polls ALL ports on ALL adapters each time 1547 * it is called. 1548 */ 1549 1550static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1551static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1552 1553void 1554si_intr(void *arg) 1555{ 1556 struct si_softc *sc; 1557 struct si_port *pp; 1558 volatile struct si_channel *ccbp; 1559 struct tty *tp; 1560 volatile caddr_t maddr; 1561 BYTE op, ip; 1562 int x, card, port, n, i, isopen; 1563 volatile BYTE *z; 1564 BYTE c; 1565 1566 sc = arg; 1567 1568 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1569 if (in_intr) 1570 return; 1571 in_intr = 1; 1572 1573 /* 1574 * When we get an int we poll all the channels and do ALL pending 1575 * work, not just the first one we find. This allows all cards to 1576 * share the same vector. 1577 * 1578 * XXX - But if we're sharing the vector with something that's NOT 1579 * a SI/XIO/SX card, we may be making more work for ourselves. 1580 */ 1581 for (card = 0; card < si_numunits; card++) { 1582 sc = devclass_get_softc(si_devclass, card); 1583 if (sc == NULL || sc->sc_type == SIEMPTY) 1584 continue; 1585 1586 /* 1587 * First, clear the interrupt 1588 */ 1589 switch(sc->sc_type) { 1590 case SIHOST: 1591 maddr = sc->sc_maddr; 1592 ((volatile struct si_reg *)maddr)->int_pending = 0; 1593 /* flag nothing pending */ 1594 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1595 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1596 break; 1597 case SIHOST2: 1598 maddr = sc->sc_maddr; 1599 ((volatile struct si_reg *)maddr)->int_pending = 0; 1600 *(maddr+SIPLIRQCLR) = 0x00; 1601 *(maddr+SIPLIRQCLR) = 0x10; 1602 break; 1603 case SIPCI: 1604 maddr = sc->sc_maddr; 1605 ((volatile struct si_reg *)maddr)->int_pending = 0; 1606 *(maddr+SIPCIINTCL) = 0x0; 1607 break; 1608 case SIJETPCI: /* fall through to JETISA case */ 1609 case SIJETISA: 1610 maddr = sc->sc_maddr; 1611 ((volatile struct si_reg *)maddr)->int_pending = 0; 1612 *(maddr+SIJETINTCL) = 0x0; 1613 break; 1614 case SIEISA: 1615 maddr = sc->sc_maddr; 1616 ((volatile struct si_reg *)maddr)->int_pending = 0; 1617 (void)inb(sc->sc_iobase + 3); 1618 break; 1619 case SIEMPTY: 1620 default: 1621 continue; 1622 } 1623 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1624 1625 /* 1626 * check each port 1627 */ 1628 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1629 pp++, port++) { 1630 ccbp = pp->sp_ccb; 1631 tp = pp->sp_tty; 1632 1633 /* 1634 * See if a command has completed ? 1635 */ 1636 if (ccbp->hi_stat != pp->sp_pend) { 1637 DPRINT((pp, DBG_INTR, 1638 "si_intr hi_stat = 0x%x, pend = %d\n", 1639 ccbp->hi_stat, pp->sp_pend)); 1640 switch(pp->sp_pend) { 1641 case LOPEN: 1642 case MPEND: 1643 case MOPEN: 1644 case CONFIG: 1645 case SBREAK: 1646 case EBREAK: 1647 pp->sp_pend = ccbp->hi_stat; 1648 /* sleeping in si_command */ 1649 wakeup(&pp->sp_state); 1650 break; 1651 default: 1652 pp->sp_pend = ccbp->hi_stat; 1653 } 1654 } 1655 1656 /* 1657 * Continue on if it's closed 1658 */ 1659 if (ccbp->hi_stat == IDLE_CLOSE) { 1660 continue; 1661 } 1662 1663 /* 1664 * Do modem state change if not a local device 1665 */ 1666 si_modem_state(pp, tp, ccbp->hi_ip); 1667 1668 /* 1669 * Check to see if we should 'receive' characters. 1670 */ 1671 if (tp->t_state & TS_CONNECTED && 1672 tp->t_state & TS_ISOPEN) 1673 isopen = 1; 1674 else 1675 isopen = 0; 1676 1677 /* 1678 * Do input break processing 1679 */ 1680 if (ccbp->hi_state & ST_BREAK) { 1681 if (isopen) { 1682 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1683 } 1684 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1685 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1686 } 1687 1688 /* 1689 * Do RX stuff - if not open then dump any characters. 1690 * XXX: This is VERY messy and needs to be cleaned up. 1691 * 1692 * XXX: can we leave data in the host adapter buffer 1693 * when the clists are full? That may be dangerous 1694 * if the user cannot get an interrupt signal through. 1695 */ 1696 1697 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1698 1699 if (!isopen) { 1700 ccbp->hi_rxopos = ccbp->hi_rxipos; 1701 goto end_rx; 1702 } 1703 1704 /* 1705 * If the tty input buffers are blocked, stop emptying 1706 * the incoming buffers and let the auto flow control 1707 * assert.. 1708 */ 1709 if (tp->t_state & TS_TBLOCK) { 1710 goto end_rx; 1711 } 1712 1713 /* 1714 * Process read characters if not skipped above 1715 */ 1716 op = ccbp->hi_rxopos; 1717 ip = ccbp->hi_rxipos; 1718 c = ip - op; 1719 if (c == 0) { 1720 goto end_rx; 1721 } 1722 1723 n = c & 0xff; 1724 if (n > 250) 1725 n = 250; 1726 1727 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1728 n, op, ip)); 1729 1730 /* 1731 * Suck characters out of host card buffer into the 1732 * "input staging buffer" - so that we dont leave the 1733 * host card in limbo while we're possibly echoing 1734 * characters and possibly flushing input inside the 1735 * ldisc l_rint() routine. 1736 */ 1737 if (n <= SI_BUFFERSIZE - op) { 1738 1739 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1740 z = ccbp->hi_rxbuf + op; 1741 si_vbcopy(z, si_rxbuf, n); 1742 1743 op += n; 1744 } else { 1745 x = SI_BUFFERSIZE - op; 1746 1747 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1748 z = ccbp->hi_rxbuf + op; 1749 si_vbcopy(z, si_rxbuf, x); 1750 1751 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1752 n - x)); 1753 z = ccbp->hi_rxbuf; 1754 si_vbcopy(z, si_rxbuf + x, n - x); 1755 1756 op += n; 1757 } 1758 1759 /* clear collected characters from buffer */ 1760 ccbp->hi_rxopos = op; 1761 1762 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1763 n, op, ip)); 1764 1765 /* 1766 * at this point... 1767 * n = number of chars placed in si_rxbuf 1768 */ 1769 1770 /* 1771 * Avoid the grotesquely inefficient lineswitch 1772 * routine (ttyinput) in "raw" mode. It usually 1773 * takes about 450 instructions (that's without 1774 * canonical processing or echo!). slinput is 1775 * reasonably fast (usually 40 instructions 1776 * plus call overhead). 1777 */ 1778 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1779 1780 /* block if the driver supports it */ 1781 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1782 (tp->t_cflag & CRTS_IFLOW || 1783 tp->t_iflag & IXOFF) && 1784 !(tp->t_state & TS_TBLOCK)) 1785 ttyblock(tp); 1786 1787 tk_nin += n; 1788 tk_rawcc += n; 1789 tp->t_rawcc += n; 1790 1791 pp->sp_delta_overflows += 1792 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1793 1794 ttwakeup(tp); 1795 if (tp->t_state & TS_TTSTOP && 1796 (tp->t_iflag & IXANY || 1797 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1798 tp->t_state &= ~TS_TTSTOP; 1799 tp->t_lflag &= ~FLUSHO; 1800 si_start(tp); 1801 } 1802 } else { 1803 /* 1804 * It'd be nice to not have to go through the 1805 * function call overhead for each char here. 1806 * It'd be nice to block input it, saving a 1807 * loop here and the call/return overhead. 1808 */ 1809 for(x = 0; x < n; x++) { 1810 i = si_rxbuf[x]; 1811 if ((*linesw[tp->t_line].l_rint)(i, tp) 1812 == -1) { 1813 pp->sp_delta_overflows++; 1814 } 1815 } 1816 } 1817 goto more_rx; /* try for more until RXbuf is empty */ 1818 1819 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1820 1821 /* 1822 * Do TX stuff 1823 */ 1824 (*linesw[tp->t_line].l_start)(tp); 1825 1826 } /* end of for (all ports on this controller) */ 1827 } /* end of for (all controllers) */ 1828 1829 in_intr = 0; 1830 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1831} 1832 1833/* 1834 * Nudge the transmitter... 1835 * 1836 * XXX: I inherited some funny code here. It implies the host card only 1837 * interrupts when the transmit buffer reaches the low-water-mark, and does 1838 * not interrupt when it's actually hits empty. In some cases, we have 1839 * processes waiting for complete drain, and we need to simulate an interrupt 1840 * about when we think the buffer is going to be empty (and retry if not). 1841 * I really am not certain about this... I *need* the hardware manuals. 1842 */ 1843static void 1844si_start(struct tty *tp) 1845{ 1846 struct si_port *pp; 1847 volatile struct si_channel *ccbp; 1848 struct clist *qp; 1849 BYTE ipos; 1850 int nchar; 1851 int oldspl, count, n, amount, buffer_full; 1852 1853 oldspl = spltty(); 1854 1855 qp = &tp->t_outq; 1856 pp = TP2PP(tp); 1857 1858 DPRINT((pp, DBG_ENTRY|DBG_START, 1859 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1860 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1861 1862 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1863 goto out; 1864 1865 buffer_full = 0; 1866 ccbp = pp->sp_ccb; 1867 1868 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1869 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1870 1871 while ((nchar = qp->c_cc) > 0) { 1872 if ((BYTE)count >= 255) { 1873 buffer_full++; 1874 break; 1875 } 1876 amount = min(nchar, (255 - (BYTE)count)); 1877 ipos = (unsigned int)ccbp->hi_txipos; 1878 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1879 /* will it fit in one lump? */ 1880 if ((SI_BUFFERSIZE - ipos) >= n) { 1881 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1882 } else { 1883 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1884 SI_BUFFERSIZE - ipos); 1885 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1886 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1887 } 1888 ccbp->hi_txipos += n; 1889 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1890 } 1891 1892 if (count != 0 && nchar == 0) { 1893 tp->t_state |= TS_BUSY; 1894 } else { 1895 tp->t_state &= ~TS_BUSY; 1896 } 1897 1898 /* wakeup time? */ 1899 ttwwakeup(tp); 1900 1901 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1902 (BYTE)count, nchar, tp->t_state)); 1903 1904 if (tp->t_state & TS_BUSY) 1905 { 1906 int time; 1907 1908 time = ttspeedtab(tp->t_ospeed, chartimes); 1909 1910 if (time > 0) { 1911 if (time < nchar) 1912 time = nchar / time; 1913 else 1914 time = 2; 1915 } else { 1916 DPRINT((pp, DBG_START, 1917 "bad char time value! %d\n", time)); 1918 time = hz/10; 1919 } 1920 1921 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1922 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1923 } else { 1924 pp->sp_state |= SS_LSTART; 1925 } 1926 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1927 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1928 } 1929 1930out: 1931 splx(oldspl); 1932 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1933} 1934 1935/* 1936 * Note: called at splsoftclock from the timeout code 1937 * This has to deal with two things... cause wakeups while waiting for 1938 * tty drains on last process exit, and call l_start at about the right 1939 * time for protocols like ppp. 1940 */ 1941static void 1942si_lstart(void *arg) 1943{ 1944 struct si_port *pp = arg; 1945 struct tty *tp; 1946 int oldspl; 1947 1948 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1949 pp, pp->sp_state)); 1950 1951 oldspl = spltty(); 1952 1953 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1954 splx(oldspl); 1955 return; 1956 } 1957 pp->sp_state &= ~SS_LSTART; 1958 pp->sp_state |= SS_INLSTART; 1959 1960 tp = pp->sp_tty; 1961 1962 /* deal with the process exit case */ 1963 ttwwakeup(tp); 1964 1965 /* nudge protocols - eg: ppp */ 1966 (*linesw[tp->t_line].l_start)(tp); 1967 1968 pp->sp_state &= ~SS_INLSTART; 1969 splx(oldspl); 1970} 1971 1972/* 1973 * Stop output on a line. called at spltty(); 1974 */ 1975static void 1976si_stop(struct tty *tp, int rw) 1977{ 1978 volatile struct si_channel *ccbp; 1979 struct si_port *pp; 1980 1981 pp = TP2PP(tp); 1982 ccbp = pp->sp_ccb; 1983 1984 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1985 1986 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1987 if (rw & FWRITE) { 1988 /* what level are we meant to be flushing anyway? */ 1989 if (tp->t_state & TS_BUSY) { 1990 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 1991 tp->t_state &= ~TS_BUSY; 1992 ttwwakeup(tp); /* Bruce???? */ 1993 } 1994 } 1995#if 1 /* XXX: this doesn't work right yet.. */ 1996 /* XXX: this may have been failing because we used to call l_rint() 1997 * while we were looping based on these two counters. Now, we collect 1998 * the data and then loop stuffing it into l_rint(), making this 1999 * useless. Should we cause this to blow away the staging buffer? 2000 */ 2001 if (rw & FREAD) { 2002 ccbp->hi_rxopos = ccbp->hi_rxipos; 2003 } 2004#endif 2005} 2006 2007/* 2008 * Issue a command to the host card CPU. 2009 */ 2010 2011static void 2012si_command(struct si_port *pp, int cmd, int waitflag) 2013{ 2014 int oldspl; 2015 volatile struct si_channel *ccbp = pp->sp_ccb; 2016 int x; 2017 2018 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2019 pp, cmd, waitflag, ccbp->hi_stat)); 2020 2021 oldspl = spltty(); /* Keep others out */ 2022 2023 /* wait until it's finished what it was doing.. */ 2024 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2025 * is turned off. */ 2026 while((x = ccbp->hi_stat) != IDLE_OPEN && 2027 x != IDLE_CLOSE && 2028 x != IDLE_BREAK && 2029 x != cmd) { 2030 if (in_intr) { /* Prevent sleep in intr */ 2031 DPRINT((pp, DBG_PARAM, 2032 "cmd intr collision - completing %d\trequested %d\n", 2033 x, cmd)); 2034 splx(oldspl); 2035 return; 2036 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2037 "sicmd1", 1)) { 2038 splx(oldspl); 2039 return; 2040 } 2041 } 2042 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2043 2044 /* if there was a pending command, cause a state-change wakeup */ 2045 switch(pp->sp_pend) { 2046 case LOPEN: 2047 case MPEND: 2048 case MOPEN: 2049 case CONFIG: 2050 case SBREAK: 2051 case EBREAK: 2052 wakeup(&pp->sp_state); 2053 break; 2054 default: 2055 break; 2056 } 2057 2058 pp->sp_pend = cmd; /* New command pending */ 2059 ccbp->hi_stat = cmd; /* Post it */ 2060 2061 if (waitflag) { 2062 if (in_intr) { /* If in interrupt handler */ 2063 DPRINT((pp, DBG_PARAM, 2064 "attempt to sleep in si_intr - cmd req %d\n", 2065 cmd)); 2066 splx(oldspl); 2067 return; 2068 } else while(ccbp->hi_stat != IDLE_OPEN && 2069 ccbp->hi_stat != IDLE_BREAK) { 2070 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2071 "sicmd2", 0)) 2072 break; 2073 } 2074 } 2075 splx(oldspl); 2076} 2077 2078static void 2079si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2080{ 2081 /* 2082 * XXX can skip a lot more cases if Smarts. Maybe 2083 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2084 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2085 */ 2086 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2087 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2088 (!(t->c_iflag & PARMRK) || 2089 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2090 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2091 linesw[tp->t_line].l_rint == ttyinput) 2092 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2093 else 2094 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2095 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2096 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2097 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2098 pp->sp_hotchar)); 2099} 2100 2101 2102#ifdef SI_DEBUG 2103 2104void 2105si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2106{ 2107 va_list ap; 2108 2109 if ((pp == NULL && (si_debug&flags)) || 2110 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2111 if (pp != NULL) 2112 printf("%ci%d(%d): ", 's', 2113 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2114 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2115 va_start(ap, fmt); 2116 vprintf(fmt, ap); 2117 va_end(ap); 2118 } 2119} 2120 2121static char * 2122si_mctl2str(enum si_mctl cmd) 2123{ 2124 switch (cmd) { 2125 case GET: 2126 return("GET"); 2127 case SET: 2128 return("SET"); 2129 case BIS: 2130 return("BIS"); 2131 case BIC: 2132 return("BIC"); 2133 } 2134 return("BAD"); 2135} 2136 2137#endif /* DEBUG */ 2138 2139static char * 2140si_modulename(int host_type, int uart_type) 2141{ 2142 switch (host_type) { 2143 /* Z280 based cards */ 2144 case SIEISA: 2145 case SIHOST2: 2146 case SIHOST: 2147 case SIPCI: 2148 switch (uart_type) { 2149 case 0: 2150 return(" (XIO)"); 2151 case 1: 2152 return(" (SI)"); 2153 } 2154 break; 2155 /* T225 based hosts */ 2156 case SIJETPCI: 2157 case SIJETISA: 2158 switch (uart_type) { 2159 case 0: 2160 return(" (SI)"); 2161 case 40: 2162 return(" (XIO)"); 2163 case 72: 2164 return(" (SXDC)"); 2165 } 2166 break; 2167 } 2168 return(""); 2169} 2170