si.c revision 105215
1/* 2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors. 3 * 4 * Copyright (C) 1990, 1992, 1998 Specialix International, 5 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk> 6 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au> 7 * 8 * Originally derived from: SunOS 4.x version 9 * Ported from BSDI version to FreeBSD by Peter Wemm. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notices, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notices, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Andy Rutter of 22 * Advanced Methods and Tools Ltd. based on original information 23 * from Specialix International. 24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix 25 * International may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 31 * NO EVENT SHALL THE AUTHORS BE LIABLE. 32 * 33 * $FreeBSD: head/sys/dev/si/si.c 105215 2002-10-16 08:48:39Z phk $ 34 */ 35 36#ifndef lint 37static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", 38 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", 39 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; 40#endif /* not lint */ 41 42#include "opt_compat.h" 43#include "opt_debug_si.h" 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 48#include <sys/ioctl_compat.h> 49#endif 50#include <sys/tty.h> 51#include <sys/conf.h> 52#include <sys/fcntl.h> 53#include <sys/dkstat.h> 54#include <sys/kernel.h> 55#include <sys/malloc.h> 56#include <sys/sysctl.h> 57#include <sys/bus.h> 58#include <machine/bus.h> 59#include <sys/rman.h> 60#include <machine/resource.h> 61 62 63#include <vm/vm.h> 64#include <vm/pmap.h> 65 66#include <machine/stdarg.h> 67 68#include <dev/si/sireg.h> 69#include <dev/si/sivar.h> 70#include <dev/si/si.h> 71 72/* 73 * This device driver is designed to interface the Specialix International 74 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, 75 * EISA or PCI bus machine. 76 * 77 * The controller is interfaced to the host via dual port RAM 78 * and an interrupt. 79 * 80 * The code for the Host 1 (very old ISA cards) has not been tested. 81 */ 82 83#define POLL /* turn on poller to scan for lost interrupts */ 84#define REALPOLL /* on each poll, scan for work regardless */ 85#define POLLHZ (hz/10) /* 10 times per second */ 86#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) 87#define INT_COUNT 25000 /* max of 125 ints per second */ 88#define JET_INT_COUNT 100 /* max of 100 ints per second */ 89#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ 90 91enum si_mctl { GET, SET, BIS, BIC }; 92 93static void si_command(struct si_port *, int, int); 94static int si_modem(struct si_port *, enum si_mctl, int); 95static void si_write_enable(struct si_port *, int); 96static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *); 97static void si_start(struct tty *); 98static void si_stop(struct tty *, int); 99static timeout_t si_lstart; 100static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp); 101static void sihardclose(struct si_port *pp); 102static void sidtrwakeup(void *chan); 103 104#ifdef SI_DEBUG 105static char *si_mctl2str(enum si_mctl cmd); 106#endif 107 108static int siparam(struct tty *, struct termios *); 109 110static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); 111static char * si_modulename(int host_type, int uart_type); 112 113static d_open_t siopen; 114static d_close_t siclose; 115static d_write_t siwrite; 116static d_ioctl_t siioctl; 117 118#define CDEV_MAJOR 68 119static struct cdevsw si_cdevsw = { 120 /* open */ siopen, 121 /* close */ siclose, 122 /* read */ ttyread, 123 /* write */ siwrite, 124 /* ioctl */ siioctl, 125 /* poll */ ttypoll, 126 /* mmap */ nommap, 127 /* strategy */ nostrategy, 128 /* name */ "si", 129 /* maj */ CDEV_MAJOR, 130 /* dump */ nodump, 131 /* psize */ nopsize, 132 /* flags */ D_TTY | D_KQFILTER, 133 /* kqfilter */ ttykqfilter, 134}; 135 136static int si_Nports; 137static int si_Nmodules; 138static int si_debug = 0; /* data, not bss, so it's patchable */ 139 140SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 141TUNABLE_INT("machdep.si_debug", &si_debug); 142 143static int si_numunits; 144 145devclass_t si_devclass; 146 147#ifndef B2000 /* not standard, but the hardware knows it. */ 148# define B2000 2000 149#endif 150static struct speedtab bdrates[] = { 151 { B75, CLK75, }, /* 0x0 */ 152 { B110, CLK110, }, /* 0x1 */ 153 { B150, CLK150, }, /* 0x3 */ 154 { B300, CLK300, }, /* 0x4 */ 155 { B600, CLK600, }, /* 0x5 */ 156 { B1200, CLK1200, }, /* 0x6 */ 157 { B2000, CLK2000, }, /* 0x7 */ 158 { B2400, CLK2400, }, /* 0x8 */ 159 { B4800, CLK4800, }, /* 0x9 */ 160 { B9600, CLK9600, }, /* 0xb */ 161 { B19200, CLK19200, }, /* 0xc */ 162 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 163 { B57600, CLK57600, }, /* 0xd */ 164 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 165 { -1, -1 }, 166}; 167 168 169/* populated with approx character/sec rates - translated at card 170 * initialisation time to chars per tick of the clock */ 171static int done_chartimes = 0; 172static struct speedtab chartimes[] = { 173 { B75, 8, }, 174 { B110, 11, }, 175 { B150, 15, }, 176 { B300, 30, }, 177 { B600, 60, }, 178 { B1200, 120, }, 179 { B2000, 200, }, 180 { B2400, 240, }, 181 { B4800, 480, }, 182 { B9600, 960, }, 183 { B19200, 1920, }, 184 { B38400, 3840, }, 185 { B57600, 5760, }, 186 { B115200, 11520, }, 187 { -1, -1 }, 188}; 189static volatile int in_intr = 0; /* Inside interrupt handler? */ 190 191#ifdef POLL 192static int si_pollrate; /* in addition to irq */ 193static int si_realpoll = 0; /* poll HW on timer */ 194 195SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 196SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 197 198static int init_finished = 0; 199static void si_poll(void *); 200#endif 201 202/* 203 * Array of adapter types and the corresponding RAM size. The order of 204 * entries here MUST match the ordinal of the adapter type. 205 */ 206static char *si_type[] = { 207 "EMPTY", 208 "SIHOST", 209 "SIMCA", /* FreeBSD does not support Microchannel */ 210 "SIHOST2", 211 "SIEISA", 212 "SIPCI", 213 "SXPCI", 214 "SXISA", 215}; 216 217/* 218 * We have to make an 8 bit version of bcopy, since some cards can't 219 * deal with 32 bit I/O 220 */ 221static void __inline 222si_bcopy(const void *src, void *dst, size_t len) 223{ 224 while (len--) 225 *(((u_char *)dst)++) = *(((const u_char *)src)++); 226} 227static void __inline 228si_vbcopy(const volatile void *src, void *dst, size_t len) 229{ 230 while (len--) 231 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++); 232} 233static void __inline 234si_bcopyv(const void *src, volatile void *dst, size_t len) 235{ 236 while (len--) 237 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++); 238} 239 240 241/* 242 * Attach the device. Initialize the card. 243 */ 244int 245siattach(device_t dev) 246{ 247 int unit; 248 struct si_softc *sc; 249 struct si_port *pp; 250 volatile struct si_channel *ccbp; 251 volatile struct si_reg *regp; 252 volatile caddr_t maddr; 253 struct si_module *modp; 254 struct speedtab *spt; 255 int nmodule, nport, x, y; 256 int uart_type; 257 258 sc = device_get_softc(dev); 259 unit = device_get_unit(dev); 260 261 sc->sc_typename = si_type[sc->sc_type]; 262 if (si_numunits < unit + 1) 263 si_numunits = unit + 1; 264 265 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 266 267#ifdef POLL 268 if (si_pollrate == 0) { 269 si_pollrate = POLLHZ; /* in addition to irq */ 270#ifdef REALPOLL 271 si_realpoll = 1; /* scan always */ 272#endif 273 } 274#endif 275 276 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 277 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 278 279 sc->sc_ports = NULL; /* mark as uninitialised */ 280 281 maddr = sc->sc_maddr; 282 283 /* Stop the CPU first so it won't stomp around while we load */ 284 285 switch (sc->sc_type) { 286 case SIEISA: 287 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 288 break; 289 case SIPCI: 290 *(maddr+SIPCIRESET) = 0; 291 break; 292 case SIJETPCI: /* fall through to JET ISA */ 293 case SIJETISA: 294 *(maddr+SIJETCONFIG) = 0; 295 break; 296 case SIHOST2: 297 *(maddr+SIPLRESET) = 0; 298 break; 299 case SIHOST: 300 *(maddr+SIRESET) = 0; 301 break; 302 default: /* this should never happen */ 303 printf("si%d: unsupported configuration\n", unit); 304 return EINVAL; 305 break; 306 } 307 308 /* OK, now lets download the download code */ 309 310 if (SI_ISJET(sc->sc_type)) { 311 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 312 unit, si3_t225_dsize)); 313 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 314 si3_t225_dsize); 315 DPRINT((0, DBG_DOWNLOAD, 316 "si%d: jet_bootstrap: nbytes %d -> %x\n", 317 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 318 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 319 si3_t225_bsize); 320 } else { 321 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 322 unit, si2_z280_dsize)); 323 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 324 si2_z280_dsize); 325 } 326 327 /* Now start the CPU */ 328 329 switch (sc->sc_type) { 330 case SIEISA: 331 /* modify the download code to tell it that it's on an EISA */ 332 *(maddr + 0x42) = 1; 333 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 334 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 335 break; 336 case SIPCI: 337 /* modify the download code to tell it that it's on a PCI */ 338 *(maddr+0x42) = 1; 339 *(maddr+SIPCIRESET) = 1; 340 *(maddr+SIPCIINTCL) = 0; 341 break; 342 case SIJETPCI: 343 *(maddr+SIJETRESET) = 0; 344 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 345 break; 346 case SIJETISA: 347 *(maddr+SIJETRESET) = 0; 348 switch (sc->sc_irq) { 349 case 9: 350 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 351 break; 352 case 10: 353 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 354 break; 355 case 11: 356 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 357 break; 358 case 12: 359 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 360 break; 361 case 15: 362 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 363 break; 364 } 365 break; 366 case SIHOST: 367 *(maddr+SIRESET_CL) = 0; 368 *(maddr+SIINTCL_CL) = 0; 369 break; 370 case SIHOST2: 371 *(maddr+SIPLRESET) = 0x10; 372 switch (sc->sc_irq) { 373 case 11: 374 *(maddr+SIPLIRQ11) = 0x10; 375 break; 376 case 12: 377 *(maddr+SIPLIRQ12) = 0x10; 378 break; 379 case 15: 380 *(maddr+SIPLIRQ15) = 0x10; 381 break; 382 } 383 *(maddr+SIPLIRQCLR) = 0x10; 384 break; 385 default: /* this should _REALLY_ never happen */ 386 printf("si%d: Uh, it was supported a second ago...\n", unit); 387 return EINVAL; 388 } 389 390 DELAY(1000000); /* wait around for a second */ 391 392 regp = (struct si_reg *)maddr; 393 y = 0; 394 /* wait max of 5 sec for init OK */ 395 while (regp->initstat == 0 && y++ < 10) { 396 DELAY(500000); 397 } 398 switch (regp->initstat) { 399 case 0: 400 printf("si%d: startup timeout - aborting\n", unit); 401 sc->sc_type = SIEMPTY; 402 return EINVAL; 403 case 1: 404 if (SI_ISJET(sc->sc_type)) { 405 /* set throttle to 100 times per second */ 406 regp->int_count = JET_INT_COUNT; 407 /* rx_intr_count is a NOP in Jet */ 408 } else { 409 /* set throttle to 125 times per second */ 410 regp->int_count = INT_COUNT; 411 /* rx intr max of 25 times per second */ 412 regp->rx_int_count = RXINT_COUNT; 413 } 414 regp->int_pending = 0; /* no intr pending */ 415 regp->int_scounter = 0; /* reset counter */ 416 break; 417 case 0xff: 418 /* 419 * No modules found, so give up on this one. 420 */ 421 printf("si%d: %s - no ports found\n", unit, 422 si_type[sc->sc_type]); 423 return 0; 424 default: 425 printf("si%d: download code version error - initstat %x\n", 426 unit, regp->initstat); 427 return EINVAL; 428 } 429 430 /* 431 * First time around the ports just count them in order 432 * to allocate some memory. 433 */ 434 nport = 0; 435 modp = (struct si_module *)(maddr + 0x80); 436 for (;;) { 437 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 438 switch (modp->sm_type) { 439 case TA4: 440 DPRINT((0, DBG_DOWNLOAD, 441 "si%d: Found old TA4 module, 4 ports\n", 442 unit)); 443 x = 4; 444 break; 445 case TA8: 446 DPRINT((0, DBG_DOWNLOAD, 447 "si%d: Found old TA8 module, 8 ports\n", 448 unit)); 449 x = 8; 450 break; 451 case TA4_ASIC: 452 DPRINT((0, DBG_DOWNLOAD, 453 "si%d: Found ASIC TA4 module, 4 ports\n", 454 unit)); 455 x = 4; 456 break; 457 case TA8_ASIC: 458 DPRINT((0, DBG_DOWNLOAD, 459 "si%d: Found ASIC TA8 module, 8 ports\n", 460 unit)); 461 x = 8; 462 break; 463 case MTA: 464 DPRINT((0, DBG_DOWNLOAD, 465 "si%d: Found CD1400 module, 8 ports\n", 466 unit)); 467 x = 8; 468 break; 469 case SXDC: 470 DPRINT((0, DBG_DOWNLOAD, 471 "si%d: Found SXDC module, 8 ports\n", 472 unit)); 473 x = 8; 474 break; 475 default: 476 printf("si%d: unknown module type %d\n", 477 unit, modp->sm_type); 478 goto try_next; 479 } 480 481 /* this was limited in firmware and is also a driver issue */ 482 if ((nport + x) > SI_MAXPORTPERCARD) { 483 printf("si%d: extra ports ignored\n", unit); 484 goto try_next; 485 } 486 487 nport += x; 488 si_Nports += x; 489 si_Nmodules++; 490 491try_next: 492 if (modp->sm_next == 0) 493 break; 494 modp = (struct si_module *) 495 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 496 } 497 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 498 M_DEVBUF, M_NOWAIT | M_ZERO); 499 if (sc->sc_ports == 0) { 500 printf("si%d: fail to malloc memory for port structs\n", 501 unit); 502 return EINVAL; 503 } 504 sc->sc_nport = nport; 505 506 /* 507 * Scan round the ports again, this time initialising. 508 */ 509 pp = sc->sc_ports; 510 nmodule = 0; 511 modp = (struct si_module *)(maddr + 0x80); 512 uart_type = 1000; /* arbitary, > uchar_max */ 513 for (;;) { 514 switch (modp->sm_type) { 515 case TA4: 516 nport = 4; 517 break; 518 case TA8: 519 nport = 8; 520 break; 521 case TA4_ASIC: 522 nport = 4; 523 break; 524 case TA8_ASIC: 525 nport = 8; 526 break; 527 case MTA: 528 nport = 8; 529 break; 530 case SXDC: 531 nport = 8; 532 break; 533 default: 534 goto try_next2; 535 } 536 nmodule++; 537 ccbp = (struct si_channel *)((char *)modp + 0x100); 538 if (uart_type == 1000) 539 uart_type = ccbp->type; 540 else if (uart_type != ccbp->type) 541 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 542 unit, nmodule, 543 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 544 uart_type, si_modulename(sc->sc_type, uart_type)); 545 546 for (x = 0; x < nport; x++, pp++, ccbp++) { 547 pp->sp_ccb = ccbp; /* save the address */ 548 pp->sp_tty = ttymalloc(NULL); 549 pp->sp_pend = IDLE_CLOSE; 550 pp->sp_state = 0; /* internal flag */ 551 pp->sp_dtr_wait = 3 * hz; 552 pp->sp_iin.c_iflag = TTYDEF_IFLAG; 553 pp->sp_iin.c_oflag = TTYDEF_OFLAG; 554 pp->sp_iin.c_cflag = TTYDEF_CFLAG; 555 pp->sp_iin.c_lflag = TTYDEF_LFLAG; 556 termioschars(&pp->sp_iin); 557 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = 558 TTYDEF_SPEED;; 559 pp->sp_iout = pp->sp_iin; 560 } 561try_next2: 562 if (modp->sm_next == 0) { 563 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 564 unit, 565 sc->sc_typename, 566 sc->sc_nport, 567 nmodule, 568 uart_type, 569 si_modulename(sc->sc_type, uart_type)); 570 break; 571 } 572 modp = (struct si_module *) 573 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 574 } 575 if (done_chartimes == 0) { 576 for (spt = chartimes ; spt->sp_speed != -1; spt++) { 577 if ((spt->sp_code /= hz) == 0) 578 spt->sp_code = 1; 579 } 580 done_chartimes = 1; 581 } 582 583/* path name devsw minor type uid gid perm*/ 584 for (x = 0; x < sc->sc_nport; x++) { 585 /* sync with the manuals that start at 1 */ 586 y = x + 1 + unit * (1 << SI_CARDSHIFT); 587 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); 588 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); 589 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); 590 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); 591 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); 592 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); 593 } 594 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); 595 return (0); 596} 597 598static int 599siopen(dev_t dev, int flag, int mode, struct thread *td) 600{ 601 int oldspl, error; 602 int card, port; 603 struct si_softc *sc; 604 struct tty *tp; 605 volatile struct si_channel *ccbp; 606 struct si_port *pp; 607 int mynor = minor(dev); 608 609 /* quickly let in /dev/si_control */ 610 if (IS_CONTROLDEV(mynor)) { 611 if ((error = suser(td))) 612 return(error); 613 return(0); 614 } 615 616 card = SI_CARD(mynor); 617 sc = devclass_get_softc(si_devclass, card); 618 if (sc == NULL) 619 return (ENXIO); 620 621 if (sc->sc_type == SIEMPTY) { 622 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", 623 card, sc->sc_typename)); 624 return(ENXIO); 625 } 626 627 port = SI_PORT(mynor); 628 if (port >= sc->sc_nport) { 629 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", 630 card, sc->sc_nport)); 631 return(ENXIO); 632 } 633 634#ifdef POLL 635 /* 636 * We've now got a device, so start the poller. 637 */ 638 if (init_finished == 0) { 639 timeout(si_poll, (caddr_t)0L, si_pollrate); 640 init_finished = 1; 641 } 642#endif 643 644 /* initial/lock device */ 645 if (IS_STATE(mynor)) { 646 return(0); 647 } 648 649 pp = sc->sc_ports + port; 650 tp = pp->sp_tty; /* the "real" tty */ 651 dev->si_tty = tp; 652 ccbp = pp->sp_ccb; /* Find control block */ 653 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", 654 devtoname(dev), flag, mode, td)); 655 656 oldspl = spltty(); /* Keep others out */ 657 error = 0; 658 659open_top: 660 while (pp->sp_state & SS_DTR_OFF) { 661 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0); 662 if (error != 0) 663 goto out; 664 } 665 666 if (tp->t_state & TS_ISOPEN) { 667 /* 668 * The device is open, so everything has been initialised. 669 * handle conflicts. 670 */ 671 if (IS_CALLOUT(mynor)) { 672 if (!pp->sp_active_out) { 673 error = EBUSY; 674 goto out; 675 } 676 } else { 677 if (pp->sp_active_out) { 678 if (flag & O_NONBLOCK) { 679 error = EBUSY; 680 goto out; 681 } 682 error = tsleep(&pp->sp_active_out, 683 TTIPRI|PCATCH, "sibi", 0); 684 if (error != 0) 685 goto out; 686 goto open_top; 687 } 688 } 689 if (tp->t_state & TS_XCLUDE && 690 suser(td)) { 691 DPRINT((pp, DBG_OPEN|DBG_FAIL, 692 "already open and EXCLUSIVE set\n")); 693 error = EBUSY; 694 goto out; 695 } 696 } else { 697 /* 698 * The device isn't open, so there are no conflicts. 699 * Initialize it. Avoid sleep... :-) 700 */ 701 DPRINT((pp, DBG_OPEN, "first open\n")); 702 tp->t_oproc = si_start; 703 tp->t_stop = si_stop; 704 tp->t_param = siparam; 705 tp->t_dev = dev; 706 tp->t_termios = mynor & SI_CALLOUT_MASK 707 ? pp->sp_iout : pp->sp_iin; 708 709 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 710 711 ++pp->sp_wopeners; /* in case of sleep in siparam */ 712 713 error = siparam(tp, &tp->t_termios); 714 715 --pp->sp_wopeners; 716 if (error != 0) 717 goto out; 718 /* XXX: we should goto_top if siparam slept */ 719 720 /* set initial DCD state */ 721 pp->sp_last_hi_ip = ccbp->hi_ip; 722 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { 723 (*linesw[tp->t_line].l_modem)(tp, 1); 724 } 725 } 726 727 /* whoops! we beat the close! */ 728 if (pp->sp_state & SS_CLOSING) { 729 /* try and stop it from proceeding to bash the hardware */ 730 pp->sp_state &= ~SS_CLOSING; 731 } 732 733 /* 734 * Wait for DCD if necessary 735 */ 736 if (!(tp->t_state & TS_CARR_ON) && 737 !IS_CALLOUT(mynor) && 738 !(tp->t_cflag & CLOCAL) && 739 !(flag & O_NONBLOCK)) { 740 ++pp->sp_wopeners; 741 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); 742 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); 743 --pp->sp_wopeners; 744 if (error != 0) 745 goto out; 746 goto open_top; 747 } 748 749 error = (*linesw[tp->t_line].l_open)(dev, tp); 750 si_disc_optim(tp, &tp->t_termios, pp); 751 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) 752 pp->sp_active_out = TRUE; 753 754 pp->sp_state |= SS_OPEN; /* made it! */ 755 756out: 757 splx(oldspl); 758 759 DPRINT((pp, DBG_OPEN, "leaving siopen\n")); 760 761 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) 762 sihardclose(pp); 763 764 return(error); 765} 766 767static int 768siclose(dev_t dev, int flag, int mode, struct thread *td) 769{ 770 struct si_port *pp; 771 struct tty *tp; 772 int oldspl; 773 int error = 0; 774 int mynor = minor(dev); 775 776 if (IS_SPECIAL(mynor)) 777 return(0); 778 779 oldspl = spltty(); 780 781 pp = MINOR2PP(mynor); 782 tp = pp->sp_tty; 783 784 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", 785 devtoname(dev), flag, mode, td, pp->sp_state)); 786 787 /* did we sleep and loose a race? */ 788 if (pp->sp_state & SS_CLOSING) { 789 /* error = ESOMETING? */ 790 goto out; 791 } 792 793 /* begin race detection.. */ 794 pp->sp_state |= SS_CLOSING; 795 796 si_write_enable(pp, 0); /* block writes for ttywait() */ 797 798 /* THIS MAY SLEEP IN TTYWAIT!!! */ 799 (*linesw[tp->t_line].l_close)(tp, flag); 800 801 si_write_enable(pp, 1); 802 803 /* did we sleep and somebody started another open? */ 804 if (!(pp->sp_state & SS_CLOSING)) { 805 /* error = ESOMETING? */ 806 goto out; 807 } 808 /* ok. we are now still on the right track.. nuke the hardware */ 809 810 if (pp->sp_state & SS_LSTART) { 811 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 812 pp->sp_state &= ~SS_LSTART; 813 } 814 815 si_stop(tp, FREAD | FWRITE); 816 817 sihardclose(pp); 818 ttyclose(tp); 819 pp->sp_state &= ~SS_OPEN; 820 821out: 822 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 823 splx(oldspl); 824 return(error); 825} 826 827static void 828sihardclose(struct si_port *pp) 829{ 830 int oldspl; 831 struct tty *tp; 832 volatile struct si_channel *ccbp; 833 834 oldspl = spltty(); 835 836 tp = pp->sp_tty; 837 ccbp = pp->sp_ccb; /* Find control block */ 838 if (tp->t_cflag & HUPCL || 839 (!pp->sp_active_out && 840 !(ccbp->hi_ip & IP_DCD) && 841 !(pp->sp_iin.c_cflag && CLOCAL)) || 842 !(tp->t_state & TS_ISOPEN)) { 843 844 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 845 (void) si_command(pp, FCLOSE, SI_NOWAIT); 846 847 if (pp->sp_dtr_wait != 0) { 848 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 849 pp->sp_state |= SS_DTR_OFF; 850 } 851 852 } 853 pp->sp_active_out = FALSE; 854 wakeup((caddr_t)&pp->sp_active_out); 855 wakeup(TSA_CARR_ON(tp)); 856 857 splx(oldspl); 858} 859 860 861/* 862 * called at splsoftclock()... 863 */ 864static void 865sidtrwakeup(void *chan) 866{ 867 struct si_port *pp; 868 int oldspl; 869 870 oldspl = spltty(); 871 872 pp = (struct si_port *)chan; 873 pp->sp_state &= ~SS_DTR_OFF; 874 wakeup(&pp->sp_dtr_wait); 875 876 splx(oldspl); 877} 878 879static int 880siwrite(dev_t dev, struct uio *uio, int flag) 881{ 882 struct si_port *pp; 883 struct tty *tp; 884 int error = 0; 885 int mynor = minor(dev); 886 int oldspl; 887 888 if (IS_SPECIAL(mynor)) { 889 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 890 return(ENODEV); 891 } 892 pp = MINOR2PP(mynor); 893 tp = pp->sp_tty; 894 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 895 896 oldspl = spltty(); 897 /* 898 * If writes are currently blocked, wait on the "real" tty 899 */ 900 while (pp->sp_state & SS_BLOCKWRITE) { 901 pp->sp_state |= SS_WAITWRITE; 902 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 903 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 904 "siwrite", tp->t_timeout))) { 905 if (error == EWOULDBLOCK) 906 error = EIO; 907 goto out; 908 } 909 } 910 911 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 912out: 913 splx(oldspl); 914 return (error); 915} 916 917 918static int 919siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 920{ 921 struct si_port *pp; 922 struct tty *tp; 923 int error; 924 int mynor = minor(dev); 925 int oldspl; 926 int blocked = 0; 927#if defined(COMPAT_43) 928 u_long oldcmd; 929 struct termios term; 930#endif 931 932 if (IS_SI_IOCTL(cmd)) 933 return(si_Sioctl(dev, cmd, data, flag, td)); 934 935 pp = MINOR2PP(mynor); 936 tp = pp->sp_tty; 937 938 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 939 devtoname(dev), cmd, data, flag)); 940 if (IS_STATE(mynor)) { 941 struct termios *ct; 942 943 switch (mynor & SI_STATE_MASK) { 944 case SI_INIT_STATE_MASK: 945 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 946 break; 947 case SI_LOCK_STATE_MASK: 948 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 949 break; 950 default: 951 return (ENODEV); 952 } 953 switch (cmd) { 954 case TIOCSETA: 955 error = suser(td); 956 if (error != 0) 957 return (error); 958 *ct = *(struct termios *)data; 959 return (0); 960 case TIOCGETA: 961 *(struct termios *)data = *ct; 962 return (0); 963 case TIOCGETD: 964 *(int *)data = TTYDISC; 965 return (0); 966 case TIOCGWINSZ: 967 bzero(data, sizeof(struct winsize)); 968 return (0); 969 default: 970 return (ENOTTY); 971 } 972 } 973 /* 974 * Do the old-style ioctl compat routines... 975 */ 976#if defined(COMPAT_43) 977 term = tp->t_termios; 978 oldcmd = cmd; 979 error = ttsetcompat(tp, &cmd, data, &term); 980 if (error != 0) 981 return (error); 982 if (cmd != oldcmd) 983 data = (caddr_t)&term; 984#endif 985 /* 986 * Do the initial / lock state business 987 */ 988 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 989 int cc; 990 struct termios *dt = (struct termios *)data; 991 struct termios *lt = mynor & SI_CALLOUT_MASK 992 ? &pp->sp_lout : &pp->sp_lin; 993 994 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 995 (dt->c_iflag & ~lt->c_iflag); 996 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 997 (dt->c_oflag & ~lt->c_oflag); 998 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 999 (dt->c_cflag & ~lt->c_cflag); 1000 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 1001 (dt->c_lflag & ~lt->c_lflag); 1002 for (cc = 0; cc < NCCS; ++cc) 1003 if (lt->c_cc[cc] != 0) 1004 dt->c_cc[cc] = tp->t_cc[cc]; 1005 if (lt->c_ispeed != 0) 1006 dt->c_ispeed = tp->t_ispeed; 1007 if (lt->c_ospeed != 0) 1008 dt->c_ospeed = tp->t_ospeed; 1009 } 1010 1011 /* 1012 * Block user-level writes to give the ttywait() 1013 * a chance to completely drain for commands 1014 * that require the port to be in a quiescent state. 1015 */ 1016 switch (cmd) { 1017 case TIOCSETAW: 1018 case TIOCSETAF: 1019 case TIOCDRAIN: 1020#ifdef COMPAT_43 1021 case TIOCSETP: 1022#endif 1023 blocked++; /* block writes for ttywait() and siparam() */ 1024 si_write_enable(pp, 0); 1025 } 1026 1027 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 1028 if (error != ENOIOCTL) 1029 goto out; 1030 1031 oldspl = spltty(); 1032 1033 error = ttioctl(tp, cmd, data, flag); 1034 si_disc_optim(tp, &tp->t_termios, pp); 1035 if (error != ENOIOCTL) { 1036 splx(oldspl); 1037 goto out; 1038 } 1039 1040 error = 0; 1041 switch (cmd) { 1042 case TIOCSBRK: 1043 si_command(pp, SBREAK, SI_WAIT); 1044 break; 1045 case TIOCCBRK: 1046 si_command(pp, EBREAK, SI_WAIT); 1047 break; 1048 case TIOCSDTR: 1049 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1050 break; 1051 case TIOCCDTR: 1052 (void) si_modem(pp, SET, 0); 1053 break; 1054 case TIOCMSET: 1055 (void) si_modem(pp, SET, *(int *)data); 1056 break; 1057 case TIOCMBIS: 1058 (void) si_modem(pp, BIS, *(int *)data); 1059 break; 1060 case TIOCMBIC: 1061 (void) si_modem(pp, BIC, *(int *)data); 1062 break; 1063 case TIOCMGET: 1064 *(int *)data = si_modem(pp, GET, 0); 1065 break; 1066 case TIOCMSDTRWAIT: 1067 /* must be root since the wait applies to following logins */ 1068 error = suser(td); 1069 if (error == 0) 1070 pp->sp_dtr_wait = *(int *)data * hz / 100; 1071 break; 1072 case TIOCMGDTRWAIT: 1073 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1074 break; 1075 default: 1076 error = ENOTTY; 1077 } 1078 splx(oldspl); 1079 1080out: 1081 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1082 if (blocked) 1083 si_write_enable(pp, 1); 1084 return(error); 1085} 1086 1087/* 1088 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1089 */ 1090static int 1091si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1092{ 1093 struct si_softc *xsc; 1094 struct si_port *xpp; 1095 volatile struct si_reg *regp; 1096 struct si_tcsi *dp; 1097 struct si_pstat *sps; 1098 int *ip, error = 0; 1099 int oldspl; 1100 int card, port; 1101 int mynor = minor(dev); 1102 1103 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1104 devtoname(dev), cmd, data, flag)); 1105 1106#if 1 1107 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1108 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1109 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1110#endif 1111 1112 if (!IS_CONTROLDEV(mynor)) { 1113 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1114 return(ENODEV); 1115 } 1116 1117 oldspl = spltty(); /* better safe than sorry */ 1118 1119 ip = (int *)data; 1120 1121#define SUCHECK if ((error = suser(td))) goto out 1122 1123 switch (cmd) { 1124 case TCSIPORTS: 1125 *ip = si_Nports; 1126 goto out; 1127 case TCSIMODULES: 1128 *ip = si_Nmodules; 1129 goto out; 1130 case TCSISDBG_ALL: 1131 SUCHECK; 1132 si_debug = *ip; 1133 goto out; 1134 case TCSIGDBG_ALL: 1135 *ip = si_debug; 1136 goto out; 1137 default: 1138 /* 1139 * Check that a controller for this port exists 1140 */ 1141 1142 /* may also be a struct si_pstat, a superset of si_tcsi */ 1143 1144 dp = (struct si_tcsi *)data; 1145 sps = (struct si_pstat *)data; 1146 card = dp->tc_card; 1147 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1148 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1149 error = ENOENT; 1150 goto out; 1151 } 1152 /* 1153 * And check that a port exists 1154 */ 1155 port = dp->tc_port; 1156 if (port < 0 || port >= xsc->sc_nport) { 1157 error = ENOENT; 1158 goto out; 1159 } 1160 xpp = xsc->sc_ports + port; 1161 regp = (struct si_reg *)xsc->sc_maddr; 1162 } 1163 1164 switch (cmd) { 1165 case TCSIDEBUG: 1166#ifdef SI_DEBUG 1167 SUCHECK; 1168 if (xpp->sp_debug) 1169 xpp->sp_debug = 0; 1170 else { 1171 xpp->sp_debug = DBG_ALL; 1172 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1173 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1174 } 1175 break; 1176#else 1177 error = ENODEV; 1178 goto out; 1179#endif 1180 case TCSISDBG_LEVEL: 1181 case TCSIGDBG_LEVEL: 1182#ifdef SI_DEBUG 1183 if (cmd == TCSIGDBG_LEVEL) { 1184 dp->tc_dbglvl = xpp->sp_debug; 1185 } else { 1186 SUCHECK; 1187 xpp->sp_debug = dp->tc_dbglvl; 1188 } 1189 break; 1190#else 1191 error = ENODEV; 1192 goto out; 1193#endif 1194 case TCSIGRXIT: 1195 dp->tc_int = regp->rx_int_count; 1196 break; 1197 case TCSIRXIT: 1198 SUCHECK; 1199 regp->rx_int_count = dp->tc_int; 1200 break; 1201 case TCSIGIT: 1202 dp->tc_int = regp->int_count; 1203 break; 1204 case TCSIIT: 1205 SUCHECK; 1206 regp->int_count = dp->tc_int; 1207 break; 1208 case TCSISTATE: 1209 dp->tc_int = xpp->sp_ccb->hi_ip; 1210 break; 1211 /* these next three use a different structure */ 1212 case TCSI_PORT: 1213 SUCHECK; 1214 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1215 break; 1216 case TCSI_CCB: 1217 SUCHECK; 1218 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1219 break; 1220 case TCSI_TTY: 1221 SUCHECK; 1222 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1223 break; 1224 default: 1225 error = EINVAL; 1226 goto out; 1227 } 1228out: 1229 splx(oldspl); 1230 return(error); /* success */ 1231} 1232 1233/* 1234 * siparam() : Configure line params 1235 * called at spltty(); 1236 * this may sleep, does not flush, nor wait for drain, nor block writes 1237 * caller must arrange this if it's important.. 1238 */ 1239static int 1240siparam(struct tty *tp, struct termios *t) 1241{ 1242 struct si_port *pp = TP2PP(tp); 1243 volatile struct si_channel *ccbp; 1244 int oldspl, cflag, iflag, oflag, lflag; 1245 int error = 0; /* shutup gcc */ 1246 int ispeed = 0; /* shutup gcc */ 1247 int ospeed = 0; /* shutup gcc */ 1248 BYTE val; 1249 1250 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1251 cflag = t->c_cflag; 1252 iflag = t->c_iflag; 1253 oflag = t->c_oflag; 1254 lflag = t->c_lflag; 1255 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1256 oflag, cflag, iflag, lflag)); 1257 1258 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1259 1260 /* if not hung up.. */ 1261 if (t->c_ospeed != 0) { 1262 /* translate baud rate to firmware values */ 1263 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1264 ispeed = t->c_ispeed ? 1265 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1266 1267 /* enforce legit baud rate */ 1268 if (ospeed < 0 || ispeed < 0) 1269 return (EINVAL); 1270 } 1271 1272 oldspl = spltty(); 1273 1274 ccbp = pp->sp_ccb; 1275 1276 /* ========== set hi_break ========== */ 1277 val = 0; 1278 if (iflag & IGNBRK) /* Breaks */ 1279 val |= BR_IGN; 1280 if (iflag & BRKINT) /* Interrupt on break? */ 1281 val |= BR_INT; 1282 if (iflag & PARMRK) /* Parity mark? */ 1283 val |= BR_PARMRK; 1284 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1285 val |= BR_PARIGN; 1286 ccbp->hi_break = val; 1287 1288 /* ========== set hi_csr ========== */ 1289 /* if not hung up.. */ 1290 if (t->c_ospeed != 0) { 1291 /* Set I/O speeds */ 1292 val = (ispeed << 4) | ospeed; 1293 } 1294 ccbp->hi_csr = val; 1295 1296 /* ========== set hi_mr2 ========== */ 1297 val = 0; 1298 if (cflag & CSTOPB) /* Stop bits */ 1299 val |= MR2_2_STOP; 1300 else 1301 val |= MR2_1_STOP; 1302 /* 1303 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1304 * a DCE, hence the reverse sense of RTS and CTS 1305 */ 1306 /* Output Flow - RTS must be raised before data can be sent */ 1307 if (cflag & CCTS_OFLOW) 1308 val |= MR2_RTSCONT; 1309 1310 ccbp->hi_mr2 = val; 1311 1312 /* ========== set hi_mr1 ========== */ 1313 val = 0; 1314 if (!(cflag & PARENB)) /* Parity */ 1315 val |= MR1_NONE; 1316 else 1317 val |= MR1_WITH; 1318 if (cflag & PARODD) 1319 val |= MR1_ODD; 1320 1321 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1322 val |= MR1_8_BITS; 1323 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1324 val |= MR1_7_BITS; 1325 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1326 val |= MR1_6_BITS; 1327 } else { /* Must be 5 */ 1328 val |= MR1_5_BITS; 1329 } 1330 /* 1331 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1332 * a DCE, hence the reverse sense of RTS and CTS 1333 */ 1334 /* Input Flow - CTS is raised when port is ready to receive data */ 1335 if (cflag & CRTS_IFLOW) 1336 val |= MR1_CTSCONT; 1337 1338 ccbp->hi_mr1 = val; 1339 1340 /* ========== set hi_mask ========== */ 1341 val = 0xff; 1342 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1343 val &= 0xFF; 1344 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1345 val &= 0x7F; 1346 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1347 val &= 0x3F; 1348 } else { /* Must be 5 */ 1349 val &= 0x1F; 1350 } 1351 if (iflag & ISTRIP) 1352 val &= 0x7F; 1353 1354 ccbp->hi_mask = val; 1355 1356 /* ========== set hi_prtcl ========== */ 1357 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1358 if (iflag & IXANY) 1359 val |= SP_TANY; 1360 if (iflag & IXON) 1361 val |= SP_TXEN; 1362 if (iflag & IXOFF) 1363 val |= SP_RXEN; 1364 if (iflag & INPCK) 1365 val |= SP_PAEN; 1366 1367 ccbp->hi_prtcl = val; 1368 1369 1370 /* ========== set hi_{rx|tx}{on|off} ========== */ 1371 /* XXX: the card TOTALLY shields us from the flow control... */ 1372 ccbp->hi_txon = t->c_cc[VSTART]; 1373 ccbp->hi_txoff = t->c_cc[VSTOP]; 1374 1375 ccbp->hi_rxon = t->c_cc[VSTART]; 1376 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1377 1378 /* ========== send settings to the card ========== */ 1379 /* potential sleep here */ 1380 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1381 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1382 else 1383 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1384 1385 /* ========== set DTR etc ========== */ 1386 /* Hangup if ospeed == 0 */ 1387 if (t->c_ospeed == 0) { 1388 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1389 } else { 1390 /* 1391 * If the previous speed was 0, may need to re-enable 1392 * the modem signals 1393 */ 1394 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1395 } 1396 1397 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1398 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1399 1400 splx(oldspl); 1401 return(error); 1402} 1403 1404/* 1405 * Enable or Disable the writes to this channel... 1406 * "state" -> enabled = 1; disabled = 0; 1407 */ 1408static void 1409si_write_enable(struct si_port *pp, int state) 1410{ 1411 int oldspl; 1412 1413 oldspl = spltty(); 1414 1415 if (state) { 1416 pp->sp_state &= ~SS_BLOCKWRITE; 1417 if (pp->sp_state & SS_WAITWRITE) { 1418 pp->sp_state &= ~SS_WAITWRITE; 1419 /* thunder away! */ 1420 wakeup((caddr_t)pp); 1421 } 1422 } else { 1423 pp->sp_state |= SS_BLOCKWRITE; 1424 } 1425 1426 splx(oldspl); 1427} 1428 1429/* 1430 * Set/Get state of modem control lines. 1431 * Due to DCE-like behaviour of the adapter, some signals need translation: 1432 * TIOCM_DTR DSR 1433 * TIOCM_RTS CTS 1434 */ 1435static int 1436si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1437{ 1438 volatile struct si_channel *ccbp; 1439 int x; 1440 1441 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1442 ccbp = pp->sp_ccb; /* Find channel address */ 1443 switch (cmd) { 1444 case GET: 1445 x = ccbp->hi_ip; 1446 bits = TIOCM_LE; 1447 if (x & IP_DCD) bits |= TIOCM_CAR; 1448 if (x & IP_DTR) bits |= TIOCM_DTR; 1449 if (x & IP_RTS) bits |= TIOCM_RTS; 1450 if (x & IP_RI) bits |= TIOCM_RI; 1451 return(bits); 1452 case SET: 1453 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1454 /* fall through */ 1455 case BIS: 1456 x = 0; 1457 if (bits & TIOCM_DTR) 1458 x |= OP_DSR; 1459 if (bits & TIOCM_RTS) 1460 x |= OP_CTS; 1461 ccbp->hi_op |= x; 1462 break; 1463 case BIC: 1464 if (bits & TIOCM_DTR) 1465 ccbp->hi_op &= ~OP_DSR; 1466 if (bits & TIOCM_RTS) 1467 ccbp->hi_op &= ~OP_CTS; 1468 } 1469 return 0; 1470} 1471 1472/* 1473 * Handle change of modem state 1474 */ 1475static void 1476si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1477{ 1478 /* if a modem dev */ 1479 if (hi_ip & IP_DCD) { 1480 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1481 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1482 tp->t_line)); 1483 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1484 } 1485 } else { 1486 if (pp->sp_last_hi_ip & IP_DCD) { 1487 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1488 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1489 (void) si_modem(pp, SET, 0); 1490 } 1491 } 1492 pp->sp_last_hi_ip = hi_ip; 1493 1494} 1495 1496/* 1497 * Poller to catch missed interrupts. 1498 * 1499 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1500 * better response. We could really use a "periodic" version timeout(). :-) 1501 */ 1502#ifdef POLL 1503static void 1504si_poll(void *nothing) 1505{ 1506 struct si_softc *sc; 1507 int i; 1508 volatile struct si_reg *regp; 1509 struct si_port *pp; 1510 int lost, oldspl, port; 1511 1512 DPRINT((0, DBG_POLL, "si_poll()\n")); 1513 oldspl = spltty(); 1514 if (in_intr) 1515 goto out; 1516 lost = 0; 1517 for (i = 0; i < si_numunits; i++) { 1518 sc = devclass_get_softc(si_devclass, i); 1519 if (sc == NULL || sc->sc_type == SIEMPTY) 1520 continue; 1521 regp = (struct si_reg *)sc->sc_maddr; 1522 1523 /* 1524 * See if there has been a pending interrupt for 2 seconds 1525 * or so. The test (int_scounter >= 200) won't correspond 1526 * to 2 seconds if int_count gets changed. 1527 */ 1528 if (regp->int_pending != 0) { 1529 if (regp->int_scounter >= 200 && 1530 regp->initstat == 1) { 1531 printf("si%d: lost intr\n", i); 1532 lost++; 1533 } 1534 } else { 1535 regp->int_scounter = 0; 1536 } 1537 1538 /* 1539 * gripe about no input flow control.. 1540 */ 1541 pp = sc->sc_ports; 1542 for (port = 0; port < sc->sc_nport; pp++, port++) { 1543 if (pp->sp_delta_overflows > 0) { 1544 printf("si%d: %d tty level buffer overflows\n", 1545 i, pp->sp_delta_overflows); 1546 pp->sp_delta_overflows = 0; 1547 } 1548 } 1549 } 1550 if (lost || si_realpoll) 1551 si_intr(NULL); /* call intr with fake vector */ 1552out: 1553 splx(oldspl); 1554 1555 timeout(si_poll, (caddr_t)0L, si_pollrate); 1556} 1557#endif /* ifdef POLL */ 1558 1559/* 1560 * The interrupt handler polls ALL ports on ALL adapters each time 1561 * it is called. 1562 */ 1563 1564static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1565static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1566 1567void 1568si_intr(void *arg) 1569{ 1570 struct si_softc *sc; 1571 struct si_port *pp; 1572 volatile struct si_channel *ccbp; 1573 struct tty *tp; 1574 volatile caddr_t maddr; 1575 BYTE op, ip; 1576 int x, card, port, n, i, isopen; 1577 volatile BYTE *z; 1578 BYTE c; 1579 1580 sc = arg; 1581 1582 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1583 if (in_intr) 1584 return; 1585 in_intr = 1; 1586 1587 /* 1588 * When we get an int we poll all the channels and do ALL pending 1589 * work, not just the first one we find. This allows all cards to 1590 * share the same vector. 1591 * 1592 * XXX - But if we're sharing the vector with something that's NOT 1593 * a SI/XIO/SX card, we may be making more work for ourselves. 1594 */ 1595 for (card = 0; card < si_numunits; card++) { 1596 sc = devclass_get_softc(si_devclass, card); 1597 if (sc == NULL || sc->sc_type == SIEMPTY) 1598 continue; 1599 1600 /* 1601 * First, clear the interrupt 1602 */ 1603 switch(sc->sc_type) { 1604 case SIHOST: 1605 maddr = sc->sc_maddr; 1606 ((volatile struct si_reg *)maddr)->int_pending = 0; 1607 /* flag nothing pending */ 1608 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1609 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1610 break; 1611 case SIHOST2: 1612 maddr = sc->sc_maddr; 1613 ((volatile struct si_reg *)maddr)->int_pending = 0; 1614 *(maddr+SIPLIRQCLR) = 0x00; 1615 *(maddr+SIPLIRQCLR) = 0x10; 1616 break; 1617 case SIPCI: 1618 maddr = sc->sc_maddr; 1619 ((volatile struct si_reg *)maddr)->int_pending = 0; 1620 *(maddr+SIPCIINTCL) = 0x0; 1621 break; 1622 case SIJETPCI: /* fall through to JETISA case */ 1623 case SIJETISA: 1624 maddr = sc->sc_maddr; 1625 ((volatile struct si_reg *)maddr)->int_pending = 0; 1626 *(maddr+SIJETINTCL) = 0x0; 1627 break; 1628 case SIEISA: 1629 maddr = sc->sc_maddr; 1630 ((volatile struct si_reg *)maddr)->int_pending = 0; 1631 (void)inb(sc->sc_iobase + 3); 1632 break; 1633 case SIEMPTY: 1634 default: 1635 continue; 1636 } 1637 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1638 1639 /* 1640 * check each port 1641 */ 1642 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1643 pp++, port++) { 1644 ccbp = pp->sp_ccb; 1645 tp = pp->sp_tty; 1646 1647 /* 1648 * See if a command has completed ? 1649 */ 1650 if (ccbp->hi_stat != pp->sp_pend) { 1651 DPRINT((pp, DBG_INTR, 1652 "si_intr hi_stat = 0x%x, pend = %d\n", 1653 ccbp->hi_stat, pp->sp_pend)); 1654 switch(pp->sp_pend) { 1655 case LOPEN: 1656 case MPEND: 1657 case MOPEN: 1658 case CONFIG: 1659 case SBREAK: 1660 case EBREAK: 1661 pp->sp_pend = ccbp->hi_stat; 1662 /* sleeping in si_command */ 1663 wakeup(&pp->sp_state); 1664 break; 1665 default: 1666 pp->sp_pend = ccbp->hi_stat; 1667 } 1668 } 1669 1670 /* 1671 * Continue on if it's closed 1672 */ 1673 if (ccbp->hi_stat == IDLE_CLOSE) { 1674 continue; 1675 } 1676 1677 /* 1678 * Do modem state change if not a local device 1679 */ 1680 si_modem_state(pp, tp, ccbp->hi_ip); 1681 1682 /* 1683 * Check to see if we should 'receive' characters. 1684 */ 1685 if (tp->t_state & TS_CONNECTED && 1686 tp->t_state & TS_ISOPEN) 1687 isopen = 1; 1688 else 1689 isopen = 0; 1690 1691 /* 1692 * Do input break processing 1693 */ 1694 if (ccbp->hi_state & ST_BREAK) { 1695 if (isopen) { 1696 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1697 } 1698 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1699 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1700 } 1701 1702 /* 1703 * Do RX stuff - if not open then dump any characters. 1704 * XXX: This is VERY messy and needs to be cleaned up. 1705 * 1706 * XXX: can we leave data in the host adapter buffer 1707 * when the clists are full? That may be dangerous 1708 * if the user cannot get an interrupt signal through. 1709 */ 1710 1711 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1712 1713 if (!isopen) { 1714 ccbp->hi_rxopos = ccbp->hi_rxipos; 1715 goto end_rx; 1716 } 1717 1718 /* 1719 * If the tty input buffers are blocked, stop emptying 1720 * the incoming buffers and let the auto flow control 1721 * assert.. 1722 */ 1723 if (tp->t_state & TS_TBLOCK) { 1724 goto end_rx; 1725 } 1726 1727 /* 1728 * Process read characters if not skipped above 1729 */ 1730 op = ccbp->hi_rxopos; 1731 ip = ccbp->hi_rxipos; 1732 c = ip - op; 1733 if (c == 0) { 1734 goto end_rx; 1735 } 1736 1737 n = c & 0xff; 1738 if (n > 250) 1739 n = 250; 1740 1741 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1742 n, op, ip)); 1743 1744 /* 1745 * Suck characters out of host card buffer into the 1746 * "input staging buffer" - so that we dont leave the 1747 * host card in limbo while we're possibly echoing 1748 * characters and possibly flushing input inside the 1749 * ldisc l_rint() routine. 1750 */ 1751 if (n <= SI_BUFFERSIZE - op) { 1752 1753 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1754 z = ccbp->hi_rxbuf + op; 1755 si_vbcopy(z, si_rxbuf, n); 1756 1757 op += n; 1758 } else { 1759 x = SI_BUFFERSIZE - op; 1760 1761 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1762 z = ccbp->hi_rxbuf + op; 1763 si_vbcopy(z, si_rxbuf, x); 1764 1765 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1766 n - x)); 1767 z = ccbp->hi_rxbuf; 1768 si_vbcopy(z, si_rxbuf + x, n - x); 1769 1770 op += n; 1771 } 1772 1773 /* clear collected characters from buffer */ 1774 ccbp->hi_rxopos = op; 1775 1776 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1777 n, op, ip)); 1778 1779 /* 1780 * at this point... 1781 * n = number of chars placed in si_rxbuf 1782 */ 1783 1784 /* 1785 * Avoid the grotesquely inefficient lineswitch 1786 * routine (ttyinput) in "raw" mode. It usually 1787 * takes about 450 instructions (that's without 1788 * canonical processing or echo!). slinput is 1789 * reasonably fast (usually 40 instructions 1790 * plus call overhead). 1791 */ 1792 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1793 1794 /* block if the driver supports it */ 1795 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1796 (tp->t_cflag & CRTS_IFLOW || 1797 tp->t_iflag & IXOFF) && 1798 !(tp->t_state & TS_TBLOCK)) 1799 ttyblock(tp); 1800 1801 tk_nin += n; 1802 tk_rawcc += n; 1803 tp->t_rawcc += n; 1804 1805 pp->sp_delta_overflows += 1806 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1807 1808 ttwakeup(tp); 1809 if (tp->t_state & TS_TTSTOP && 1810 (tp->t_iflag & IXANY || 1811 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1812 tp->t_state &= ~TS_TTSTOP; 1813 tp->t_lflag &= ~FLUSHO; 1814 si_start(tp); 1815 } 1816 } else { 1817 /* 1818 * It'd be nice to not have to go through the 1819 * function call overhead for each char here. 1820 * It'd be nice to block input it, saving a 1821 * loop here and the call/return overhead. 1822 */ 1823 for(x = 0; x < n; x++) { 1824 i = si_rxbuf[x]; 1825 if ((*linesw[tp->t_line].l_rint)(i, tp) 1826 == -1) { 1827 pp->sp_delta_overflows++; 1828 } 1829 } 1830 } 1831 goto more_rx; /* try for more until RXbuf is empty */ 1832 1833 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1834 1835 /* 1836 * Do TX stuff 1837 */ 1838 (*linesw[tp->t_line].l_start)(tp); 1839 1840 } /* end of for (all ports on this controller) */ 1841 } /* end of for (all controllers) */ 1842 1843 in_intr = 0; 1844 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1845} 1846 1847/* 1848 * Nudge the transmitter... 1849 * 1850 * XXX: I inherited some funny code here. It implies the host card only 1851 * interrupts when the transmit buffer reaches the low-water-mark, and does 1852 * not interrupt when it's actually hits empty. In some cases, we have 1853 * processes waiting for complete drain, and we need to simulate an interrupt 1854 * about when we think the buffer is going to be empty (and retry if not). 1855 * I really am not certain about this... I *need* the hardware manuals. 1856 */ 1857static void 1858si_start(struct tty *tp) 1859{ 1860 struct si_port *pp; 1861 volatile struct si_channel *ccbp; 1862 struct clist *qp; 1863 BYTE ipos; 1864 int nchar; 1865 int oldspl, count, n, amount, buffer_full; 1866 1867 oldspl = spltty(); 1868 1869 qp = &tp->t_outq; 1870 pp = TP2PP(tp); 1871 1872 DPRINT((pp, DBG_ENTRY|DBG_START, 1873 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1874 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1875 1876 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1877 goto out; 1878 1879 buffer_full = 0; 1880 ccbp = pp->sp_ccb; 1881 1882 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1883 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1884 1885 while ((nchar = qp->c_cc) > 0) { 1886 if ((BYTE)count >= 255) { 1887 buffer_full++; 1888 break; 1889 } 1890 amount = min(nchar, (255 - (BYTE)count)); 1891 ipos = (unsigned int)ccbp->hi_txipos; 1892 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1893 /* will it fit in one lump? */ 1894 if ((SI_BUFFERSIZE - ipos) >= n) { 1895 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1896 } else { 1897 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1898 SI_BUFFERSIZE - ipos); 1899 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1900 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1901 } 1902 ccbp->hi_txipos += n; 1903 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1904 } 1905 1906 if (count != 0 && nchar == 0) { 1907 tp->t_state |= TS_BUSY; 1908 } else { 1909 tp->t_state &= ~TS_BUSY; 1910 } 1911 1912 /* wakeup time? */ 1913 ttwwakeup(tp); 1914 1915 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1916 (BYTE)count, nchar, tp->t_state)); 1917 1918 if (tp->t_state & TS_BUSY) 1919 { 1920 int time; 1921 1922 time = ttspeedtab(tp->t_ospeed, chartimes); 1923 1924 if (time > 0) { 1925 if (time < nchar) 1926 time = nchar / time; 1927 else 1928 time = 2; 1929 } else { 1930 DPRINT((pp, DBG_START, 1931 "bad char time value! %d\n", time)); 1932 time = hz/10; 1933 } 1934 1935 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1936 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1937 } else { 1938 pp->sp_state |= SS_LSTART; 1939 } 1940 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1941 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1942 } 1943 1944out: 1945 splx(oldspl); 1946 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1947} 1948 1949/* 1950 * Note: called at splsoftclock from the timeout code 1951 * This has to deal with two things... cause wakeups while waiting for 1952 * tty drains on last process exit, and call l_start at about the right 1953 * time for protocols like ppp. 1954 */ 1955static void 1956si_lstart(void *arg) 1957{ 1958 struct si_port *pp = arg; 1959 struct tty *tp; 1960 int oldspl; 1961 1962 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1963 pp, pp->sp_state)); 1964 1965 oldspl = spltty(); 1966 1967 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1968 splx(oldspl); 1969 return; 1970 } 1971 pp->sp_state &= ~SS_LSTART; 1972 pp->sp_state |= SS_INLSTART; 1973 1974 tp = pp->sp_tty; 1975 1976 /* deal with the process exit case */ 1977 ttwwakeup(tp); 1978 1979 /* nudge protocols - eg: ppp */ 1980 (*linesw[tp->t_line].l_start)(tp); 1981 1982 pp->sp_state &= ~SS_INLSTART; 1983 splx(oldspl); 1984} 1985 1986/* 1987 * Stop output on a line. called at spltty(); 1988 */ 1989static void 1990si_stop(struct tty *tp, int rw) 1991{ 1992 volatile struct si_channel *ccbp; 1993 struct si_port *pp; 1994 1995 pp = TP2PP(tp); 1996 ccbp = pp->sp_ccb; 1997 1998 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1999 2000 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 2001 if (rw & FWRITE) { 2002 /* what level are we meant to be flushing anyway? */ 2003 if (tp->t_state & TS_BUSY) { 2004 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 2005 tp->t_state &= ~TS_BUSY; 2006 ttwwakeup(tp); /* Bruce???? */ 2007 } 2008 } 2009#if 1 /* XXX: this doesn't work right yet.. */ 2010 /* XXX: this may have been failing because we used to call l_rint() 2011 * while we were looping based on these two counters. Now, we collect 2012 * the data and then loop stuffing it into l_rint(), making this 2013 * useless. Should we cause this to blow away the staging buffer? 2014 */ 2015 if (rw & FREAD) { 2016 ccbp->hi_rxopos = ccbp->hi_rxipos; 2017 } 2018#endif 2019} 2020 2021/* 2022 * Issue a command to the host card CPU. 2023 */ 2024 2025static void 2026si_command(struct si_port *pp, int cmd, int waitflag) 2027{ 2028 int oldspl; 2029 volatile struct si_channel *ccbp = pp->sp_ccb; 2030 int x; 2031 2032 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2033 pp, cmd, waitflag, ccbp->hi_stat)); 2034 2035 oldspl = spltty(); /* Keep others out */ 2036 2037 /* wait until it's finished what it was doing.. */ 2038 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2039 * is turned off. */ 2040 while((x = ccbp->hi_stat) != IDLE_OPEN && 2041 x != IDLE_CLOSE && 2042 x != IDLE_BREAK && 2043 x != cmd) { 2044 if (in_intr) { /* Prevent sleep in intr */ 2045 DPRINT((pp, DBG_PARAM, 2046 "cmd intr collision - completing %d\trequested %d\n", 2047 x, cmd)); 2048 splx(oldspl); 2049 return; 2050 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2051 "sicmd1", 1)) { 2052 splx(oldspl); 2053 return; 2054 } 2055 } 2056 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2057 2058 /* if there was a pending command, cause a state-change wakeup */ 2059 switch(pp->sp_pend) { 2060 case LOPEN: 2061 case MPEND: 2062 case MOPEN: 2063 case CONFIG: 2064 case SBREAK: 2065 case EBREAK: 2066 wakeup(&pp->sp_state); 2067 break; 2068 default: 2069 break; 2070 } 2071 2072 pp->sp_pend = cmd; /* New command pending */ 2073 ccbp->hi_stat = cmd; /* Post it */ 2074 2075 if (waitflag) { 2076 if (in_intr) { /* If in interrupt handler */ 2077 DPRINT((pp, DBG_PARAM, 2078 "attempt to sleep in si_intr - cmd req %d\n", 2079 cmd)); 2080 splx(oldspl); 2081 return; 2082 } else while(ccbp->hi_stat != IDLE_OPEN && 2083 ccbp->hi_stat != IDLE_BREAK) { 2084 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2085 "sicmd2", 0)) 2086 break; 2087 } 2088 } 2089 splx(oldspl); 2090} 2091 2092static void 2093si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2094{ 2095 /* 2096 * XXX can skip a lot more cases if Smarts. Maybe 2097 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2098 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2099 */ 2100 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2101 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2102 (!(t->c_iflag & PARMRK) || 2103 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2104 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2105 linesw[tp->t_line].l_rint == ttyinput) 2106 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2107 else 2108 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2109 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2110 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2111 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2112 pp->sp_hotchar)); 2113} 2114 2115 2116#ifdef SI_DEBUG 2117 2118void 2119si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2120{ 2121 va_list ap; 2122 2123 if ((pp == NULL && (si_debug&flags)) || 2124 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2125 if (pp != NULL) 2126 printf("%ci%d(%d): ", 's', 2127 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2128 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2129 va_start(ap, fmt); 2130 vprintf(fmt, ap); 2131 va_end(ap); 2132 } 2133} 2134 2135static char * 2136si_mctl2str(enum si_mctl cmd) 2137{ 2138 switch (cmd) { 2139 case GET: 2140 return("GET"); 2141 case SET: 2142 return("SET"); 2143 case BIS: 2144 return("BIS"); 2145 case BIC: 2146 return("BIC"); 2147 } 2148 return("BAD"); 2149} 2150 2151#endif /* DEBUG */ 2152 2153static char * 2154si_modulename(int host_type, int uart_type) 2155{ 2156 switch (host_type) { 2157 /* Z280 based cards */ 2158 case SIEISA: 2159 case SIHOST2: 2160 case SIHOST: 2161 case SIPCI: 2162 switch (uart_type) { 2163 case 0: 2164 return(" (XIO)"); 2165 case 1: 2166 return(" (SI)"); 2167 } 2168 break; 2169 /* T225 based hosts */ 2170 case SIJETPCI: 2171 case SIJETISA: 2172 switch (uart_type) { 2173 case 0: 2174 return(" (SI)"); 2175 case 40: 2176 return(" (XIO)"); 2177 case 72: 2178 return(" (SXDC)"); 2179 } 2180 break; 2181 } 2182 return(""); 2183} 2184