si.c revision 119419
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 119419 2003-08-24 18:03:45Z obrien $"); 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; 119 120#define CDEV_MAJOR 68 121static struct cdevsw si_cdevsw = { 122 .d_open = siopen, 123 .d_close = siclose, 124 .d_read = ttyread, 125 .d_write = siwrite, 126 .d_ioctl = siioctl, 127 .d_poll = ttypoll, 128 .d_name = "si", 129 .d_maj = CDEV_MAJOR, 130 .d_flags = D_TTY, 131 .d_kqfilter = ttykqfilter, 132}; 133 134static int si_Nports; 135static int si_Nmodules; 136static int si_debug = 0; /* data, not bss, so it's patchable */ 137 138SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 139TUNABLE_INT("machdep.si_debug", &si_debug); 140 141static int si_numunits; 142 143devclass_t si_devclass; 144 145#ifndef B2000 /* not standard, but the hardware knows it. */ 146# define B2000 2000 147#endif 148static struct speedtab bdrates[] = { 149 { B75, CLK75, }, /* 0x0 */ 150 { B110, CLK110, }, /* 0x1 */ 151 { B150, CLK150, }, /* 0x3 */ 152 { B300, CLK300, }, /* 0x4 */ 153 { B600, CLK600, }, /* 0x5 */ 154 { B1200, CLK1200, }, /* 0x6 */ 155 { B2000, CLK2000, }, /* 0x7 */ 156 { B2400, CLK2400, }, /* 0x8 */ 157 { B4800, CLK4800, }, /* 0x9 */ 158 { B9600, CLK9600, }, /* 0xb */ 159 { B19200, CLK19200, }, /* 0xc */ 160 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 161 { B57600, CLK57600, }, /* 0xd */ 162 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 163 { -1, -1 }, 164}; 165 166 167/* populated with approx character/sec rates - translated at card 168 * initialisation time to chars per tick of the clock */ 169static int done_chartimes = 0; 170static struct speedtab chartimes[] = { 171 { B75, 8, }, 172 { B110, 11, }, 173 { B150, 15, }, 174 { B300, 30, }, 175 { B600, 60, }, 176 { B1200, 120, }, 177 { B2000, 200, }, 178 { B2400, 240, }, 179 { B4800, 480, }, 180 { B9600, 960, }, 181 { B19200, 1920, }, 182 { B38400, 3840, }, 183 { B57600, 5760, }, 184 { B115200, 11520, }, 185 { -1, -1 }, 186}; 187static volatile int in_intr = 0; /* Inside interrupt handler? */ 188 189#ifdef POLL 190static int si_pollrate; /* in addition to irq */ 191static int si_realpoll = 0; /* poll HW on timer */ 192 193SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 194SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 195 196static int init_finished = 0; 197static void si_poll(void *); 198#endif 199 200/* 201 * Array of adapter types and the corresponding RAM size. The order of 202 * entries here MUST match the ordinal of the adapter type. 203 */ 204static char *si_type[] = { 205 "EMPTY", 206 "SIHOST", 207 "SIMCA", /* FreeBSD does not support Microchannel */ 208 "SIHOST2", 209 "SIEISA", 210 "SIPCI", 211 "SXPCI", 212 "SXISA", 213}; 214 215/* 216 * We have to make an 8 bit version of bcopy, since some cards can't 217 * deal with 32 bit I/O 218 */ 219static void __inline 220si_bcopy(const void *src, void *dst, size_t len) 221{ 222 while (len--) 223 *(((u_char *)dst)++) = *(((const u_char *)src)++); 224} 225static void __inline 226si_vbcopy(const volatile void *src, void *dst, size_t len) 227{ 228 while (len--) 229 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++); 230} 231static void __inline 232si_bcopyv(const void *src, volatile void *dst, size_t len) 233{ 234 while (len--) 235 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++); 236} 237 238 239/* 240 * Attach the device. Initialize the card. 241 */ 242int 243siattach(device_t dev) 244{ 245 int unit; 246 struct si_softc *sc; 247 struct si_port *pp; 248 volatile struct si_channel *ccbp; 249 volatile struct si_reg *regp; 250 volatile caddr_t maddr; 251 struct si_module *modp; 252 struct speedtab *spt; 253 int nmodule, nport, x, y; 254 int uart_type; 255 256 sc = device_get_softc(dev); 257 unit = device_get_unit(dev); 258 259 sc->sc_typename = si_type[sc->sc_type]; 260 if (si_numunits < unit + 1) 261 si_numunits = unit + 1; 262 263 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 264 265#ifdef POLL 266 if (si_pollrate == 0) { 267 si_pollrate = POLLHZ; /* in addition to irq */ 268#ifdef REALPOLL 269 si_realpoll = 1; /* scan always */ 270#endif 271 } 272#endif 273 274 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 275 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 276 277 sc->sc_ports = NULL; /* mark as uninitialised */ 278 279 maddr = sc->sc_maddr; 280 281 /* Stop the CPU first so it won't stomp around while we load */ 282 283 switch (sc->sc_type) { 284 case SIEISA: 285 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 286 break; 287 case SIPCI: 288 *(maddr+SIPCIRESET) = 0; 289 break; 290 case SIJETPCI: /* fall through to JET ISA */ 291 case SIJETISA: 292 *(maddr+SIJETCONFIG) = 0; 293 break; 294 case SIHOST2: 295 *(maddr+SIPLRESET) = 0; 296 break; 297 case SIHOST: 298 *(maddr+SIRESET) = 0; 299 break; 300 default: /* this should never happen */ 301 printf("si%d: unsupported configuration\n", unit); 302 return EINVAL; 303 break; 304 } 305 306 /* OK, now lets download the download code */ 307 308 if (SI_ISJET(sc->sc_type)) { 309 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 310 unit, si3_t225_dsize)); 311 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 312 si3_t225_dsize); 313 DPRINT((0, DBG_DOWNLOAD, 314 "si%d: jet_bootstrap: nbytes %d -> %x\n", 315 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 316 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 317 si3_t225_bsize); 318 } else { 319 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 320 unit, si2_z280_dsize)); 321 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 322 si2_z280_dsize); 323 } 324 325 /* Now start the CPU */ 326 327 switch (sc->sc_type) { 328 case SIEISA: 329 /* modify the download code to tell it that it's on an EISA */ 330 *(maddr + 0x42) = 1; 331 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 332 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 333 break; 334 case SIPCI: 335 /* modify the download code to tell it that it's on a PCI */ 336 *(maddr+0x42) = 1; 337 *(maddr+SIPCIRESET) = 1; 338 *(maddr+SIPCIINTCL) = 0; 339 break; 340 case SIJETPCI: 341 *(maddr+SIJETRESET) = 0; 342 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 343 break; 344 case SIJETISA: 345 *(maddr+SIJETRESET) = 0; 346 switch (sc->sc_irq) { 347 case 9: 348 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 349 break; 350 case 10: 351 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 352 break; 353 case 11: 354 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 355 break; 356 case 12: 357 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 358 break; 359 case 15: 360 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 361 break; 362 } 363 break; 364 case SIHOST: 365 *(maddr+SIRESET_CL) = 0; 366 *(maddr+SIINTCL_CL) = 0; 367 break; 368 case SIHOST2: 369 *(maddr+SIPLRESET) = 0x10; 370 switch (sc->sc_irq) { 371 case 11: 372 *(maddr+SIPLIRQ11) = 0x10; 373 break; 374 case 12: 375 *(maddr+SIPLIRQ12) = 0x10; 376 break; 377 case 15: 378 *(maddr+SIPLIRQ15) = 0x10; 379 break; 380 } 381 *(maddr+SIPLIRQCLR) = 0x10; 382 break; 383 default: /* this should _REALLY_ never happen */ 384 printf("si%d: Uh, it was supported a second ago...\n", unit); 385 return EINVAL; 386 } 387 388 DELAY(1000000); /* wait around for a second */ 389 390 regp = (struct si_reg *)maddr; 391 y = 0; 392 /* wait max of 5 sec for init OK */ 393 while (regp->initstat == 0 && y++ < 10) { 394 DELAY(500000); 395 } 396 switch (regp->initstat) { 397 case 0: 398 printf("si%d: startup timeout - aborting\n", unit); 399 sc->sc_type = SIEMPTY; 400 return EINVAL; 401 case 1: 402 if (SI_ISJET(sc->sc_type)) { 403 /* set throttle to 100 times per second */ 404 regp->int_count = JET_INT_COUNT; 405 /* rx_intr_count is a NOP in Jet */ 406 } else { 407 /* set throttle to 125 times per second */ 408 regp->int_count = INT_COUNT; 409 /* rx intr max of 25 times per second */ 410 regp->rx_int_count = RXINT_COUNT; 411 } 412 regp->int_pending = 0; /* no intr pending */ 413 regp->int_scounter = 0; /* reset counter */ 414 break; 415 case 0xff: 416 /* 417 * No modules found, so give up on this one. 418 */ 419 printf("si%d: %s - no ports found\n", unit, 420 si_type[sc->sc_type]); 421 return 0; 422 default: 423 printf("si%d: download code version error - initstat %x\n", 424 unit, regp->initstat); 425 return EINVAL; 426 } 427 428 /* 429 * First time around the ports just count them in order 430 * to allocate some memory. 431 */ 432 nport = 0; 433 modp = (struct si_module *)(maddr + 0x80); 434 for (;;) { 435 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 436 switch (modp->sm_type) { 437 case TA4: 438 DPRINT((0, DBG_DOWNLOAD, 439 "si%d: Found old TA4 module, 4 ports\n", 440 unit)); 441 x = 4; 442 break; 443 case TA8: 444 DPRINT((0, DBG_DOWNLOAD, 445 "si%d: Found old TA8 module, 8 ports\n", 446 unit)); 447 x = 8; 448 break; 449 case TA4_ASIC: 450 DPRINT((0, DBG_DOWNLOAD, 451 "si%d: Found ASIC TA4 module, 4 ports\n", 452 unit)); 453 x = 4; 454 break; 455 case TA8_ASIC: 456 DPRINT((0, DBG_DOWNLOAD, 457 "si%d: Found ASIC TA8 module, 8 ports\n", 458 unit)); 459 x = 8; 460 break; 461 case MTA: 462 DPRINT((0, DBG_DOWNLOAD, 463 "si%d: Found CD1400 module, 8 ports\n", 464 unit)); 465 x = 8; 466 break; 467 case SXDC: 468 DPRINT((0, DBG_DOWNLOAD, 469 "si%d: Found SXDC module, 8 ports\n", 470 unit)); 471 x = 8; 472 break; 473 default: 474 printf("si%d: unknown module type %d\n", 475 unit, modp->sm_type); 476 goto try_next; 477 } 478 479 /* this was limited in firmware and is also a driver issue */ 480 if ((nport + x) > SI_MAXPORTPERCARD) { 481 printf("si%d: extra ports ignored\n", unit); 482 goto try_next; 483 } 484 485 nport += x; 486 si_Nports += x; 487 si_Nmodules++; 488 489try_next: 490 if (modp->sm_next == 0) 491 break; 492 modp = (struct si_module *) 493 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 494 } 495 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 496 M_DEVBUF, M_NOWAIT | M_ZERO); 497 if (sc->sc_ports == 0) { 498 printf("si%d: fail to malloc memory for port structs\n", 499 unit); 500 return EINVAL; 501 } 502 sc->sc_nport = nport; 503 504 /* 505 * Scan round the ports again, this time initialising. 506 */ 507 pp = sc->sc_ports; 508 nmodule = 0; 509 modp = (struct si_module *)(maddr + 0x80); 510 uart_type = 1000; /* arbitary, > uchar_max */ 511 for (;;) { 512 switch (modp->sm_type) { 513 case TA4: 514 nport = 4; 515 break; 516 case TA8: 517 nport = 8; 518 break; 519 case TA4_ASIC: 520 nport = 4; 521 break; 522 case TA8_ASIC: 523 nport = 8; 524 break; 525 case MTA: 526 nport = 8; 527 break; 528 case SXDC: 529 nport = 8; 530 break; 531 default: 532 goto try_next2; 533 } 534 nmodule++; 535 ccbp = (struct si_channel *)((char *)modp + 0x100); 536 if (uart_type == 1000) 537 uart_type = ccbp->type; 538 else if (uart_type != ccbp->type) 539 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 540 unit, nmodule, 541 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 542 uart_type, si_modulename(sc->sc_type, uart_type)); 543 544 for (x = 0; x < nport; x++, pp++, ccbp++) { 545 pp->sp_ccb = ccbp; /* save the address */ 546 pp->sp_tty = ttymalloc(NULL); 547 pp->sp_pend = IDLE_CLOSE; 548 pp->sp_state = 0; /* internal flag */ 549 pp->sp_dtr_wait = 3 * hz; 550 pp->sp_iin.c_iflag = TTYDEF_IFLAG; 551 pp->sp_iin.c_oflag = TTYDEF_OFLAG; 552 pp->sp_iin.c_cflag = TTYDEF_CFLAG; 553 pp->sp_iin.c_lflag = TTYDEF_LFLAG; 554 termioschars(&pp->sp_iin); 555 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = 556 TTYDEF_SPEED;; 557 pp->sp_iout = pp->sp_iin; 558 } 559try_next2: 560 if (modp->sm_next == 0) { 561 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 562 unit, 563 sc->sc_typename, 564 sc->sc_nport, 565 nmodule, 566 uart_type, 567 si_modulename(sc->sc_type, uart_type)); 568 break; 569 } 570 modp = (struct si_module *) 571 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 572 } 573 if (done_chartimes == 0) { 574 for (spt = chartimes ; spt->sp_speed != -1; spt++) { 575 if ((spt->sp_code /= hz) == 0) 576 spt->sp_code = 1; 577 } 578 done_chartimes = 1; 579 } 580 581/* path name devsw minor type uid gid perm*/ 582 for (x = 0; x < sc->sc_nport; x++) { 583 /* sync with the manuals that start at 1 */ 584 y = x + 1 + unit * (1 << SI_CARDSHIFT); 585 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); 586 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); 587 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); 588 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); 589 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); 590 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); 591 } 592 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); 593 return (0); 594} 595 596static int 597siopen(dev_t dev, int flag, int mode, struct thread *td) 598{ 599 int oldspl, error; 600 int card, port; 601 struct si_softc *sc; 602 struct tty *tp; 603 volatile struct si_channel *ccbp; 604 struct si_port *pp; 605 int mynor = minor(dev); 606 607 /* quickly let in /dev/si_control */ 608 if (IS_CONTROLDEV(mynor)) { 609 if ((error = suser(td))) 610 return(error); 611 return(0); 612 } 613 614 card = SI_CARD(mynor); 615 sc = devclass_get_softc(si_devclass, card); 616 if (sc == NULL) 617 return (ENXIO); 618 619 if (sc->sc_type == SIEMPTY) { 620 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", 621 card, sc->sc_typename)); 622 return(ENXIO); 623 } 624 625 port = SI_PORT(mynor); 626 if (port >= sc->sc_nport) { 627 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", 628 card, sc->sc_nport)); 629 return(ENXIO); 630 } 631 632#ifdef POLL 633 /* 634 * We've now got a device, so start the poller. 635 */ 636 if (init_finished == 0) { 637 timeout(si_poll, (caddr_t)0L, si_pollrate); 638 init_finished = 1; 639 } 640#endif 641 642 /* initial/lock device */ 643 if (IS_STATE(mynor)) { 644 return(0); 645 } 646 647 pp = sc->sc_ports + port; 648 tp = pp->sp_tty; /* the "real" tty */ 649 dev->si_tty = tp; 650 ccbp = pp->sp_ccb; /* Find control block */ 651 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", 652 devtoname(dev), flag, mode, td)); 653 654 oldspl = spltty(); /* Keep others out */ 655 error = 0; 656 657open_top: 658 while (pp->sp_state & SS_DTR_OFF) { 659 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0); 660 if (error != 0) 661 goto out; 662 } 663 664 if (tp->t_state & TS_ISOPEN) { 665 /* 666 * The device is open, so everything has been initialised. 667 * handle conflicts. 668 */ 669 if (IS_CALLOUT(mynor)) { 670 if (!pp->sp_active_out) { 671 error = EBUSY; 672 goto out; 673 } 674 } else { 675 if (pp->sp_active_out) { 676 if (flag & O_NONBLOCK) { 677 error = EBUSY; 678 goto out; 679 } 680 error = tsleep(&pp->sp_active_out, 681 TTIPRI|PCATCH, "sibi", 0); 682 if (error != 0) 683 goto out; 684 goto open_top; 685 } 686 } 687 if (tp->t_state & TS_XCLUDE && 688 suser(td)) { 689 DPRINT((pp, DBG_OPEN|DBG_FAIL, 690 "already open and EXCLUSIVE set\n")); 691 error = EBUSY; 692 goto out; 693 } 694 } else { 695 /* 696 * The device isn't open, so there are no conflicts. 697 * Initialize it. Avoid sleep... :-) 698 */ 699 DPRINT((pp, DBG_OPEN, "first open\n")); 700 tp->t_oproc = si_start; 701 tp->t_stop = si_stop; 702 tp->t_param = siparam; 703 tp->t_dev = dev; 704 tp->t_termios = mynor & SI_CALLOUT_MASK 705 ? pp->sp_iout : pp->sp_iin; 706 707 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 708 709 ++pp->sp_wopeners; /* in case of sleep in siparam */ 710 711 error = siparam(tp, &tp->t_termios); 712 713 --pp->sp_wopeners; 714 if (error != 0) 715 goto out; 716 /* XXX: we should goto_top if siparam slept */ 717 718 /* set initial DCD state */ 719 pp->sp_last_hi_ip = ccbp->hi_ip; 720 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { 721 (*linesw[tp->t_line].l_modem)(tp, 1); 722 } 723 } 724 725 /* whoops! we beat the close! */ 726 if (pp->sp_state & SS_CLOSING) { 727 /* try and stop it from proceeding to bash the hardware */ 728 pp->sp_state &= ~SS_CLOSING; 729 } 730 731 /* 732 * Wait for DCD if necessary 733 */ 734 if (!(tp->t_state & TS_CARR_ON) && 735 !IS_CALLOUT(mynor) && 736 !(tp->t_cflag & CLOCAL) && 737 !(flag & O_NONBLOCK)) { 738 ++pp->sp_wopeners; 739 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); 740 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); 741 --pp->sp_wopeners; 742 if (error != 0) 743 goto out; 744 goto open_top; 745 } 746 747 error = (*linesw[tp->t_line].l_open)(dev, tp); 748 si_disc_optim(tp, &tp->t_termios, pp); 749 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) 750 pp->sp_active_out = TRUE; 751 752 pp->sp_state |= SS_OPEN; /* made it! */ 753 754out: 755 splx(oldspl); 756 757 DPRINT((pp, DBG_OPEN, "leaving siopen\n")); 758 759 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) 760 sihardclose(pp); 761 762 return(error); 763} 764 765static int 766siclose(dev_t dev, int flag, int mode, struct thread *td) 767{ 768 struct si_port *pp; 769 struct tty *tp; 770 int oldspl; 771 int error = 0; 772 int mynor = minor(dev); 773 774 if (IS_SPECIAL(mynor)) 775 return(0); 776 777 oldspl = spltty(); 778 779 pp = MINOR2PP(mynor); 780 tp = pp->sp_tty; 781 782 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", 783 devtoname(dev), flag, mode, td, pp->sp_state)); 784 785 /* did we sleep and loose a race? */ 786 if (pp->sp_state & SS_CLOSING) { 787 /* error = ESOMETING? */ 788 goto out; 789 } 790 791 /* begin race detection.. */ 792 pp->sp_state |= SS_CLOSING; 793 794 si_write_enable(pp, 0); /* block writes for ttywait() */ 795 796 /* THIS MAY SLEEP IN TTYWAIT!!! */ 797 (*linesw[tp->t_line].l_close)(tp, flag); 798 799 si_write_enable(pp, 1); 800 801 /* did we sleep and somebody started another open? */ 802 if (!(pp->sp_state & SS_CLOSING)) { 803 /* error = ESOMETING? */ 804 goto out; 805 } 806 /* ok. we are now still on the right track.. nuke the hardware */ 807 808 if (pp->sp_state & SS_LSTART) { 809 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 810 pp->sp_state &= ~SS_LSTART; 811 } 812 813 si_stop(tp, FREAD | FWRITE); 814 815 sihardclose(pp); 816 ttyclose(tp); 817 pp->sp_state &= ~SS_OPEN; 818 819out: 820 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 821 splx(oldspl); 822 return(error); 823} 824 825static void 826sihardclose(struct si_port *pp) 827{ 828 int oldspl; 829 struct tty *tp; 830 volatile struct si_channel *ccbp; 831 832 oldspl = spltty(); 833 834 tp = pp->sp_tty; 835 ccbp = pp->sp_ccb; /* Find control block */ 836 if (tp->t_cflag & HUPCL || 837 (!pp->sp_active_out && 838 !(ccbp->hi_ip & IP_DCD) && 839 !(pp->sp_iin.c_cflag && CLOCAL)) || 840 !(tp->t_state & TS_ISOPEN)) { 841 842 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 843 (void) si_command(pp, FCLOSE, SI_NOWAIT); 844 845 if (pp->sp_dtr_wait != 0) { 846 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 847 pp->sp_state |= SS_DTR_OFF; 848 } 849 850 } 851 pp->sp_active_out = FALSE; 852 wakeup(&pp->sp_active_out); 853 wakeup(TSA_CARR_ON(tp)); 854 855 splx(oldspl); 856} 857 858 859/* 860 * called at splsoftclock()... 861 */ 862static void 863sidtrwakeup(void *chan) 864{ 865 struct si_port *pp; 866 int oldspl; 867 868 oldspl = spltty(); 869 870 pp = (struct si_port *)chan; 871 pp->sp_state &= ~SS_DTR_OFF; 872 wakeup(&pp->sp_dtr_wait); 873 874 splx(oldspl); 875} 876 877static int 878siwrite(dev_t dev, struct uio *uio, int flag) 879{ 880 struct si_port *pp; 881 struct tty *tp; 882 int error = 0; 883 int mynor = minor(dev); 884 int oldspl; 885 886 if (IS_SPECIAL(mynor)) { 887 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 888 return(ENODEV); 889 } 890 pp = MINOR2PP(mynor); 891 tp = pp->sp_tty; 892 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 893 894 oldspl = spltty(); 895 /* 896 * If writes are currently blocked, wait on the "real" tty 897 */ 898 while (pp->sp_state & SS_BLOCKWRITE) { 899 pp->sp_state |= SS_WAITWRITE; 900 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 901 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 902 "siwrite", tp->t_timeout))) { 903 if (error == EWOULDBLOCK) 904 error = EIO; 905 goto out; 906 } 907 } 908 909 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 910out: 911 splx(oldspl); 912 return (error); 913} 914 915 916static int 917siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 918{ 919 struct si_port *pp; 920 struct tty *tp; 921 int error; 922 int mynor = minor(dev); 923 int oldspl; 924 int blocked = 0; 925#if defined(COMPAT_43) 926 u_long oldcmd; 927 struct termios term; 928#endif 929 930 if (IS_SI_IOCTL(cmd)) 931 return(si_Sioctl(dev, cmd, data, flag, td)); 932 933 pp = MINOR2PP(mynor); 934 tp = pp->sp_tty; 935 936 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 937 devtoname(dev), cmd, data, flag)); 938 if (IS_STATE(mynor)) { 939 struct termios *ct; 940 941 switch (mynor & SI_STATE_MASK) { 942 case SI_INIT_STATE_MASK: 943 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 944 break; 945 case SI_LOCK_STATE_MASK: 946 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 947 break; 948 default: 949 return (ENODEV); 950 } 951 switch (cmd) { 952 case TIOCSETA: 953 error = suser(td); 954 if (error != 0) 955 return (error); 956 *ct = *(struct termios *)data; 957 return (0); 958 case TIOCGETA: 959 *(struct termios *)data = *ct; 960 return (0); 961 case TIOCGETD: 962 *(int *)data = TTYDISC; 963 return (0); 964 case TIOCGWINSZ: 965 bzero(data, sizeof(struct winsize)); 966 return (0); 967 default: 968 return (ENOTTY); 969 } 970 } 971 /* 972 * Do the old-style ioctl compat routines... 973 */ 974#if defined(COMPAT_43) 975 term = tp->t_termios; 976 oldcmd = cmd; 977 error = ttsetcompat(tp, &cmd, data, &term); 978 if (error != 0) 979 return (error); 980 if (cmd != oldcmd) 981 data = (caddr_t)&term; 982#endif 983 /* 984 * Do the initial / lock state business 985 */ 986 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 987 int cc; 988 struct termios *dt = (struct termios *)data; 989 struct termios *lt = mynor & SI_CALLOUT_MASK 990 ? &pp->sp_lout : &pp->sp_lin; 991 992 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 993 (dt->c_iflag & ~lt->c_iflag); 994 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 995 (dt->c_oflag & ~lt->c_oflag); 996 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 997 (dt->c_cflag & ~lt->c_cflag); 998 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 999 (dt->c_lflag & ~lt->c_lflag); 1000 for (cc = 0; cc < NCCS; ++cc) 1001 if (lt->c_cc[cc] != 0) 1002 dt->c_cc[cc] = tp->t_cc[cc]; 1003 if (lt->c_ispeed != 0) 1004 dt->c_ispeed = tp->t_ispeed; 1005 if (lt->c_ospeed != 0) 1006 dt->c_ospeed = tp->t_ospeed; 1007 } 1008 1009 /* 1010 * Block user-level writes to give the ttywait() 1011 * a chance to completely drain for commands 1012 * that require the port to be in a quiescent state. 1013 */ 1014 switch (cmd) { 1015 case TIOCSETAW: 1016 case TIOCSETAF: 1017 case TIOCDRAIN: 1018#ifdef COMPAT_43 1019 case TIOCSETP: 1020#endif 1021 blocked++; /* block writes for ttywait() and siparam() */ 1022 si_write_enable(pp, 0); 1023 } 1024 1025 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 1026 if (error != ENOIOCTL) 1027 goto out; 1028 1029 oldspl = spltty(); 1030 1031 error = ttioctl(tp, cmd, data, flag); 1032 si_disc_optim(tp, &tp->t_termios, pp); 1033 if (error != ENOIOCTL) { 1034 splx(oldspl); 1035 goto out; 1036 } 1037 1038 error = 0; 1039 switch (cmd) { 1040 case TIOCSBRK: 1041 si_command(pp, SBREAK, SI_WAIT); 1042 break; 1043 case TIOCCBRK: 1044 si_command(pp, EBREAK, SI_WAIT); 1045 break; 1046 case TIOCSDTR: 1047 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1048 break; 1049 case TIOCCDTR: 1050 (void) si_modem(pp, SET, 0); 1051 break; 1052 case TIOCMSET: 1053 (void) si_modem(pp, SET, *(int *)data); 1054 break; 1055 case TIOCMBIS: 1056 (void) si_modem(pp, BIS, *(int *)data); 1057 break; 1058 case TIOCMBIC: 1059 (void) si_modem(pp, BIC, *(int *)data); 1060 break; 1061 case TIOCMGET: 1062 *(int *)data = si_modem(pp, GET, 0); 1063 break; 1064 case TIOCMSDTRWAIT: 1065 /* must be root since the wait applies to following logins */ 1066 error = suser(td); 1067 if (error == 0) 1068 pp->sp_dtr_wait = *(int *)data * hz / 100; 1069 break; 1070 case TIOCMGDTRWAIT: 1071 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1072 break; 1073 default: 1074 error = ENOTTY; 1075 } 1076 splx(oldspl); 1077 1078out: 1079 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1080 if (blocked) 1081 si_write_enable(pp, 1); 1082 return(error); 1083} 1084 1085/* 1086 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1087 */ 1088static int 1089si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1090{ 1091 struct si_softc *xsc; 1092 struct si_port *xpp; 1093 volatile struct si_reg *regp; 1094 struct si_tcsi *dp; 1095 struct si_pstat *sps; 1096 int *ip, error = 0; 1097 int oldspl; 1098 int card, port; 1099 int mynor = minor(dev); 1100 1101 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1102 devtoname(dev), cmd, data, flag)); 1103 1104#if 1 1105 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1106 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1107 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1108#endif 1109 1110 if (!IS_CONTROLDEV(mynor)) { 1111 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1112 return(ENODEV); 1113 } 1114 1115 oldspl = spltty(); /* better safe than sorry */ 1116 1117 ip = (int *)data; 1118 1119#define SUCHECK if ((error = suser(td))) goto out 1120 1121 switch (cmd) { 1122 case TCSIPORTS: 1123 *ip = si_Nports; 1124 goto out; 1125 case TCSIMODULES: 1126 *ip = si_Nmodules; 1127 goto out; 1128 case TCSISDBG_ALL: 1129 SUCHECK; 1130 si_debug = *ip; 1131 goto out; 1132 case TCSIGDBG_ALL: 1133 *ip = si_debug; 1134 goto out; 1135 default: 1136 /* 1137 * Check that a controller for this port exists 1138 */ 1139 1140 /* may also be a struct si_pstat, a superset of si_tcsi */ 1141 1142 dp = (struct si_tcsi *)data; 1143 sps = (struct si_pstat *)data; 1144 card = dp->tc_card; 1145 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1146 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1147 error = ENOENT; 1148 goto out; 1149 } 1150 /* 1151 * And check that a port exists 1152 */ 1153 port = dp->tc_port; 1154 if (port < 0 || port >= xsc->sc_nport) { 1155 error = ENOENT; 1156 goto out; 1157 } 1158 xpp = xsc->sc_ports + port; 1159 regp = (struct si_reg *)xsc->sc_maddr; 1160 } 1161 1162 switch (cmd) { 1163 case TCSIDEBUG: 1164#ifdef SI_DEBUG 1165 SUCHECK; 1166 if (xpp->sp_debug) 1167 xpp->sp_debug = 0; 1168 else { 1169 xpp->sp_debug = DBG_ALL; 1170 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1171 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1172 } 1173 break; 1174#else 1175 error = ENODEV; 1176 goto out; 1177#endif 1178 case TCSISDBG_LEVEL: 1179 case TCSIGDBG_LEVEL: 1180#ifdef SI_DEBUG 1181 if (cmd == TCSIGDBG_LEVEL) { 1182 dp->tc_dbglvl = xpp->sp_debug; 1183 } else { 1184 SUCHECK; 1185 xpp->sp_debug = dp->tc_dbglvl; 1186 } 1187 break; 1188#else 1189 error = ENODEV; 1190 goto out; 1191#endif 1192 case TCSIGRXIT: 1193 dp->tc_int = regp->rx_int_count; 1194 break; 1195 case TCSIRXIT: 1196 SUCHECK; 1197 regp->rx_int_count = dp->tc_int; 1198 break; 1199 case TCSIGIT: 1200 dp->tc_int = regp->int_count; 1201 break; 1202 case TCSIIT: 1203 SUCHECK; 1204 regp->int_count = dp->tc_int; 1205 break; 1206 case TCSISTATE: 1207 dp->tc_int = xpp->sp_ccb->hi_ip; 1208 break; 1209 /* these next three use a different structure */ 1210 case TCSI_PORT: 1211 SUCHECK; 1212 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1213 break; 1214 case TCSI_CCB: 1215 SUCHECK; 1216 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1217 break; 1218 case TCSI_TTY: 1219 SUCHECK; 1220 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1221 break; 1222 default: 1223 error = EINVAL; 1224 goto out; 1225 } 1226out: 1227 splx(oldspl); 1228 return(error); /* success */ 1229} 1230 1231/* 1232 * siparam() : Configure line params 1233 * called at spltty(); 1234 * this may sleep, does not flush, nor wait for drain, nor block writes 1235 * caller must arrange this if it's important.. 1236 */ 1237static int 1238siparam(struct tty *tp, struct termios *t) 1239{ 1240 struct si_port *pp = TP2PP(tp); 1241 volatile struct si_channel *ccbp; 1242 int oldspl, cflag, iflag, oflag, lflag; 1243 int error = 0; /* shutup gcc */ 1244 int ispeed = 0; /* shutup gcc */ 1245 int ospeed = 0; /* shutup gcc */ 1246 BYTE val; 1247 1248 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1249 cflag = t->c_cflag; 1250 iflag = t->c_iflag; 1251 oflag = t->c_oflag; 1252 lflag = t->c_lflag; 1253 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1254 oflag, cflag, iflag, lflag)); 1255 1256 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1257 1258 /* if not hung up.. */ 1259 if (t->c_ospeed != 0) { 1260 /* translate baud rate to firmware values */ 1261 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1262 ispeed = t->c_ispeed ? 1263 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1264 1265 /* enforce legit baud rate */ 1266 if (ospeed < 0 || ispeed < 0) 1267 return (EINVAL); 1268 } 1269 1270 oldspl = spltty(); 1271 1272 ccbp = pp->sp_ccb; 1273 1274 /* ========== set hi_break ========== */ 1275 val = 0; 1276 if (iflag & IGNBRK) /* Breaks */ 1277 val |= BR_IGN; 1278 if (iflag & BRKINT) /* Interrupt on break? */ 1279 val |= BR_INT; 1280 if (iflag & PARMRK) /* Parity mark? */ 1281 val |= BR_PARMRK; 1282 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1283 val |= BR_PARIGN; 1284 ccbp->hi_break = val; 1285 1286 /* ========== set hi_csr ========== */ 1287 /* if not hung up.. */ 1288 if (t->c_ospeed != 0) { 1289 /* Set I/O speeds */ 1290 val = (ispeed << 4) | ospeed; 1291 } 1292 ccbp->hi_csr = val; 1293 1294 /* ========== set hi_mr2 ========== */ 1295 val = 0; 1296 if (cflag & CSTOPB) /* Stop bits */ 1297 val |= MR2_2_STOP; 1298 else 1299 val |= MR2_1_STOP; 1300 /* 1301 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1302 * a DCE, hence the reverse sense of RTS and CTS 1303 */ 1304 /* Output Flow - RTS must be raised before data can be sent */ 1305 if (cflag & CCTS_OFLOW) 1306 val |= MR2_RTSCONT; 1307 1308 ccbp->hi_mr2 = val; 1309 1310 /* ========== set hi_mr1 ========== */ 1311 val = 0; 1312 if (!(cflag & PARENB)) /* Parity */ 1313 val |= MR1_NONE; 1314 else 1315 val |= MR1_WITH; 1316 if (cflag & PARODD) 1317 val |= MR1_ODD; 1318 1319 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1320 val |= MR1_8_BITS; 1321 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1322 val |= MR1_7_BITS; 1323 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1324 val |= MR1_6_BITS; 1325 } else { /* Must be 5 */ 1326 val |= MR1_5_BITS; 1327 } 1328 /* 1329 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1330 * a DCE, hence the reverse sense of RTS and CTS 1331 */ 1332 /* Input Flow - CTS is raised when port is ready to receive data */ 1333 if (cflag & CRTS_IFLOW) 1334 val |= MR1_CTSCONT; 1335 1336 ccbp->hi_mr1 = val; 1337 1338 /* ========== set hi_mask ========== */ 1339 val = 0xff; 1340 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1341 val &= 0xFF; 1342 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1343 val &= 0x7F; 1344 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1345 val &= 0x3F; 1346 } else { /* Must be 5 */ 1347 val &= 0x1F; 1348 } 1349 if (iflag & ISTRIP) 1350 val &= 0x7F; 1351 1352 ccbp->hi_mask = val; 1353 1354 /* ========== set hi_prtcl ========== */ 1355 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1356 if (iflag & IXANY) 1357 val |= SP_TANY; 1358 if (iflag & IXON) 1359 val |= SP_TXEN; 1360 if (iflag & IXOFF) 1361 val |= SP_RXEN; 1362 if (iflag & INPCK) 1363 val |= SP_PAEN; 1364 1365 ccbp->hi_prtcl = val; 1366 1367 1368 /* ========== set hi_{rx|tx}{on|off} ========== */ 1369 /* XXX: the card TOTALLY shields us from the flow control... */ 1370 ccbp->hi_txon = t->c_cc[VSTART]; 1371 ccbp->hi_txoff = t->c_cc[VSTOP]; 1372 1373 ccbp->hi_rxon = t->c_cc[VSTART]; 1374 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1375 1376 /* ========== send settings to the card ========== */ 1377 /* potential sleep here */ 1378 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1379 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1380 else 1381 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1382 1383 /* ========== set DTR etc ========== */ 1384 /* Hangup if ospeed == 0 */ 1385 if (t->c_ospeed == 0) { 1386 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1387 } else { 1388 /* 1389 * If the previous speed was 0, may need to re-enable 1390 * the modem signals 1391 */ 1392 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1393 } 1394 1395 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1396 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1397 1398 splx(oldspl); 1399 return(error); 1400} 1401 1402/* 1403 * Enable or Disable the writes to this channel... 1404 * "state" -> enabled = 1; disabled = 0; 1405 */ 1406static void 1407si_write_enable(struct si_port *pp, int state) 1408{ 1409 int oldspl; 1410 1411 oldspl = spltty(); 1412 1413 if (state) { 1414 pp->sp_state &= ~SS_BLOCKWRITE; 1415 if (pp->sp_state & SS_WAITWRITE) { 1416 pp->sp_state &= ~SS_WAITWRITE; 1417 /* thunder away! */ 1418 wakeup(pp); 1419 } 1420 } else { 1421 pp->sp_state |= SS_BLOCKWRITE; 1422 } 1423 1424 splx(oldspl); 1425} 1426 1427/* 1428 * Set/Get state of modem control lines. 1429 * Due to DCE-like behaviour of the adapter, some signals need translation: 1430 * TIOCM_DTR DSR 1431 * TIOCM_RTS CTS 1432 */ 1433static int 1434si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1435{ 1436 volatile struct si_channel *ccbp; 1437 int x; 1438 1439 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1440 ccbp = pp->sp_ccb; /* Find channel address */ 1441 switch (cmd) { 1442 case GET: 1443 x = ccbp->hi_ip; 1444 bits = TIOCM_LE; 1445 if (x & IP_DCD) bits |= TIOCM_CAR; 1446 if (x & IP_DTR) bits |= TIOCM_DTR; 1447 if (x & IP_RTS) bits |= TIOCM_RTS; 1448 if (x & IP_RI) bits |= TIOCM_RI; 1449 return(bits); 1450 case SET: 1451 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1452 /* fall through */ 1453 case BIS: 1454 x = 0; 1455 if (bits & TIOCM_DTR) 1456 x |= OP_DSR; 1457 if (bits & TIOCM_RTS) 1458 x |= OP_CTS; 1459 ccbp->hi_op |= x; 1460 break; 1461 case BIC: 1462 if (bits & TIOCM_DTR) 1463 ccbp->hi_op &= ~OP_DSR; 1464 if (bits & TIOCM_RTS) 1465 ccbp->hi_op &= ~OP_CTS; 1466 } 1467 return 0; 1468} 1469 1470/* 1471 * Handle change of modem state 1472 */ 1473static void 1474si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1475{ 1476 /* if a modem dev */ 1477 if (hi_ip & IP_DCD) { 1478 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1479 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1480 tp->t_line)); 1481 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1482 } 1483 } else { 1484 if (pp->sp_last_hi_ip & IP_DCD) { 1485 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1486 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1487 (void) si_modem(pp, SET, 0); 1488 } 1489 } 1490 pp->sp_last_hi_ip = hi_ip; 1491 1492} 1493 1494/* 1495 * Poller to catch missed interrupts. 1496 * 1497 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1498 * better response. We could really use a "periodic" version timeout(). :-) 1499 */ 1500#ifdef POLL 1501static void 1502si_poll(void *nothing) 1503{ 1504 struct si_softc *sc; 1505 int i; 1506 volatile struct si_reg *regp; 1507 struct si_port *pp; 1508 int lost, oldspl, port; 1509 1510 DPRINT((0, DBG_POLL, "si_poll()\n")); 1511 oldspl = spltty(); 1512 if (in_intr) 1513 goto out; 1514 lost = 0; 1515 for (i = 0; i < si_numunits; i++) { 1516 sc = devclass_get_softc(si_devclass, i); 1517 if (sc == NULL || sc->sc_type == SIEMPTY) 1518 continue; 1519 regp = (struct si_reg *)sc->sc_maddr; 1520 1521 /* 1522 * See if there has been a pending interrupt for 2 seconds 1523 * or so. The test (int_scounter >= 200) won't correspond 1524 * to 2 seconds if int_count gets changed. 1525 */ 1526 if (regp->int_pending != 0) { 1527 if (regp->int_scounter >= 200 && 1528 regp->initstat == 1) { 1529 printf("si%d: lost intr\n", i); 1530 lost++; 1531 } 1532 } else { 1533 regp->int_scounter = 0; 1534 } 1535 1536 /* 1537 * gripe about no input flow control.. 1538 */ 1539 pp = sc->sc_ports; 1540 for (port = 0; port < sc->sc_nport; pp++, port++) { 1541 if (pp->sp_delta_overflows > 0) { 1542 printf("si%d: %d tty level buffer overflows\n", 1543 i, pp->sp_delta_overflows); 1544 pp->sp_delta_overflows = 0; 1545 } 1546 } 1547 } 1548 if (lost || si_realpoll) 1549 si_intr(NULL); /* call intr with fake vector */ 1550out: 1551 splx(oldspl); 1552 1553 timeout(si_poll, (caddr_t)0L, si_pollrate); 1554} 1555#endif /* ifdef POLL */ 1556 1557/* 1558 * The interrupt handler polls ALL ports on ALL adapters each time 1559 * it is called. 1560 */ 1561 1562static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1563static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1564 1565void 1566si_intr(void *arg) 1567{ 1568 struct si_softc *sc; 1569 struct si_port *pp; 1570 volatile struct si_channel *ccbp; 1571 struct tty *tp; 1572 volatile caddr_t maddr; 1573 BYTE op, ip; 1574 int x, card, port, n, i, isopen; 1575 volatile BYTE *z; 1576 BYTE c; 1577 1578 sc = arg; 1579 1580 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1581 if (in_intr) 1582 return; 1583 in_intr = 1; 1584 1585 /* 1586 * When we get an int we poll all the channels and do ALL pending 1587 * work, not just the first one we find. This allows all cards to 1588 * share the same vector. 1589 * 1590 * XXX - But if we're sharing the vector with something that's NOT 1591 * a SI/XIO/SX card, we may be making more work for ourselves. 1592 */ 1593 for (card = 0; card < si_numunits; card++) { 1594 sc = devclass_get_softc(si_devclass, card); 1595 if (sc == NULL || sc->sc_type == SIEMPTY) 1596 continue; 1597 1598 /* 1599 * First, clear the interrupt 1600 */ 1601 switch(sc->sc_type) { 1602 case SIHOST: 1603 maddr = sc->sc_maddr; 1604 ((volatile struct si_reg *)maddr)->int_pending = 0; 1605 /* flag nothing pending */ 1606 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1607 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1608 break; 1609 case SIHOST2: 1610 maddr = sc->sc_maddr; 1611 ((volatile struct si_reg *)maddr)->int_pending = 0; 1612 *(maddr+SIPLIRQCLR) = 0x00; 1613 *(maddr+SIPLIRQCLR) = 0x10; 1614 break; 1615 case SIPCI: 1616 maddr = sc->sc_maddr; 1617 ((volatile struct si_reg *)maddr)->int_pending = 0; 1618 *(maddr+SIPCIINTCL) = 0x0; 1619 break; 1620 case SIJETPCI: /* fall through to JETISA case */ 1621 case SIJETISA: 1622 maddr = sc->sc_maddr; 1623 ((volatile struct si_reg *)maddr)->int_pending = 0; 1624 *(maddr+SIJETINTCL) = 0x0; 1625 break; 1626 case SIEISA: 1627 maddr = sc->sc_maddr; 1628 ((volatile struct si_reg *)maddr)->int_pending = 0; 1629 (void)inb(sc->sc_iobase + 3); 1630 break; 1631 case SIEMPTY: 1632 default: 1633 continue; 1634 } 1635 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1636 1637 /* 1638 * check each port 1639 */ 1640 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1641 pp++, port++) { 1642 ccbp = pp->sp_ccb; 1643 tp = pp->sp_tty; 1644 1645 /* 1646 * See if a command has completed ? 1647 */ 1648 if (ccbp->hi_stat != pp->sp_pend) { 1649 DPRINT((pp, DBG_INTR, 1650 "si_intr hi_stat = 0x%x, pend = %d\n", 1651 ccbp->hi_stat, pp->sp_pend)); 1652 switch(pp->sp_pend) { 1653 case LOPEN: 1654 case MPEND: 1655 case MOPEN: 1656 case CONFIG: 1657 case SBREAK: 1658 case EBREAK: 1659 pp->sp_pend = ccbp->hi_stat; 1660 /* sleeping in si_command */ 1661 wakeup(&pp->sp_state); 1662 break; 1663 default: 1664 pp->sp_pend = ccbp->hi_stat; 1665 } 1666 } 1667 1668 /* 1669 * Continue on if it's closed 1670 */ 1671 if (ccbp->hi_stat == IDLE_CLOSE) { 1672 continue; 1673 } 1674 1675 /* 1676 * Do modem state change if not a local device 1677 */ 1678 si_modem_state(pp, tp, ccbp->hi_ip); 1679 1680 /* 1681 * Check to see if we should 'receive' characters. 1682 */ 1683 if (tp->t_state & TS_CONNECTED && 1684 tp->t_state & TS_ISOPEN) 1685 isopen = 1; 1686 else 1687 isopen = 0; 1688 1689 /* 1690 * Do input break processing 1691 */ 1692 if (ccbp->hi_state & ST_BREAK) { 1693 if (isopen) { 1694 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1695 } 1696 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1697 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1698 } 1699 1700 /* 1701 * Do RX stuff - if not open then dump any characters. 1702 * XXX: This is VERY messy and needs to be cleaned up. 1703 * 1704 * XXX: can we leave data in the host adapter buffer 1705 * when the clists are full? That may be dangerous 1706 * if the user cannot get an interrupt signal through. 1707 */ 1708 1709 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1710 1711 if (!isopen) { 1712 ccbp->hi_rxopos = ccbp->hi_rxipos; 1713 goto end_rx; 1714 } 1715 1716 /* 1717 * If the tty input buffers are blocked, stop emptying 1718 * the incoming buffers and let the auto flow control 1719 * assert.. 1720 */ 1721 if (tp->t_state & TS_TBLOCK) { 1722 goto end_rx; 1723 } 1724 1725 /* 1726 * Process read characters if not skipped above 1727 */ 1728 op = ccbp->hi_rxopos; 1729 ip = ccbp->hi_rxipos; 1730 c = ip - op; 1731 if (c == 0) { 1732 goto end_rx; 1733 } 1734 1735 n = c & 0xff; 1736 if (n > 250) 1737 n = 250; 1738 1739 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1740 n, op, ip)); 1741 1742 /* 1743 * Suck characters out of host card buffer into the 1744 * "input staging buffer" - so that we dont leave the 1745 * host card in limbo while we're possibly echoing 1746 * characters and possibly flushing input inside the 1747 * ldisc l_rint() routine. 1748 */ 1749 if (n <= SI_BUFFERSIZE - op) { 1750 1751 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1752 z = ccbp->hi_rxbuf + op; 1753 si_vbcopy(z, si_rxbuf, n); 1754 1755 op += n; 1756 } else { 1757 x = SI_BUFFERSIZE - op; 1758 1759 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1760 z = ccbp->hi_rxbuf + op; 1761 si_vbcopy(z, si_rxbuf, x); 1762 1763 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1764 n - x)); 1765 z = ccbp->hi_rxbuf; 1766 si_vbcopy(z, si_rxbuf + x, n - x); 1767 1768 op += n; 1769 } 1770 1771 /* clear collected characters from buffer */ 1772 ccbp->hi_rxopos = op; 1773 1774 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1775 n, op, ip)); 1776 1777 /* 1778 * at this point... 1779 * n = number of chars placed in si_rxbuf 1780 */ 1781 1782 /* 1783 * Avoid the grotesquely inefficient lineswitch 1784 * routine (ttyinput) in "raw" mode. It usually 1785 * takes about 450 instructions (that's without 1786 * canonical processing or echo!). slinput is 1787 * reasonably fast (usually 40 instructions 1788 * plus call overhead). 1789 */ 1790 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1791 1792 /* block if the driver supports it */ 1793 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1794 (tp->t_cflag & CRTS_IFLOW || 1795 tp->t_iflag & IXOFF) && 1796 !(tp->t_state & TS_TBLOCK)) 1797 ttyblock(tp); 1798 1799 tk_nin += n; 1800 tk_rawcc += n; 1801 tp->t_rawcc += n; 1802 1803 pp->sp_delta_overflows += 1804 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1805 1806 ttwakeup(tp); 1807 if (tp->t_state & TS_TTSTOP && 1808 (tp->t_iflag & IXANY || 1809 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1810 tp->t_state &= ~TS_TTSTOP; 1811 tp->t_lflag &= ~FLUSHO; 1812 si_start(tp); 1813 } 1814 } else { 1815 /* 1816 * It'd be nice to not have to go through the 1817 * function call overhead for each char here. 1818 * It'd be nice to block input it, saving a 1819 * loop here and the call/return overhead. 1820 */ 1821 for(x = 0; x < n; x++) { 1822 i = si_rxbuf[x]; 1823 if ((*linesw[tp->t_line].l_rint)(i, tp) 1824 == -1) { 1825 pp->sp_delta_overflows++; 1826 } 1827 } 1828 } 1829 goto more_rx; /* try for more until RXbuf is empty */ 1830 1831 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1832 1833 /* 1834 * Do TX stuff 1835 */ 1836 (*linesw[tp->t_line].l_start)(tp); 1837 1838 } /* end of for (all ports on this controller) */ 1839 } /* end of for (all controllers) */ 1840 1841 in_intr = 0; 1842 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1843} 1844 1845/* 1846 * Nudge the transmitter... 1847 * 1848 * XXX: I inherited some funny code here. It implies the host card only 1849 * interrupts when the transmit buffer reaches the low-water-mark, and does 1850 * not interrupt when it's actually hits empty. In some cases, we have 1851 * processes waiting for complete drain, and we need to simulate an interrupt 1852 * about when we think the buffer is going to be empty (and retry if not). 1853 * I really am not certain about this... I *need* the hardware manuals. 1854 */ 1855static void 1856si_start(struct tty *tp) 1857{ 1858 struct si_port *pp; 1859 volatile struct si_channel *ccbp; 1860 struct clist *qp; 1861 BYTE ipos; 1862 int nchar; 1863 int oldspl, count, n, amount, buffer_full; 1864 1865 oldspl = spltty(); 1866 1867 qp = &tp->t_outq; 1868 pp = TP2PP(tp); 1869 1870 DPRINT((pp, DBG_ENTRY|DBG_START, 1871 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1872 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1873 1874 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1875 goto out; 1876 1877 buffer_full = 0; 1878 ccbp = pp->sp_ccb; 1879 1880 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1881 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1882 1883 while ((nchar = qp->c_cc) > 0) { 1884 if ((BYTE)count >= 255) { 1885 buffer_full++; 1886 break; 1887 } 1888 amount = min(nchar, (255 - (BYTE)count)); 1889 ipos = (unsigned int)ccbp->hi_txipos; 1890 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1891 /* will it fit in one lump? */ 1892 if ((SI_BUFFERSIZE - ipos) >= n) { 1893 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1894 } else { 1895 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1896 SI_BUFFERSIZE - ipos); 1897 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1898 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1899 } 1900 ccbp->hi_txipos += n; 1901 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1902 } 1903 1904 if (count != 0 && nchar == 0) { 1905 tp->t_state |= TS_BUSY; 1906 } else { 1907 tp->t_state &= ~TS_BUSY; 1908 } 1909 1910 /* wakeup time? */ 1911 ttwwakeup(tp); 1912 1913 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1914 (BYTE)count, nchar, tp->t_state)); 1915 1916 if (tp->t_state & TS_BUSY) 1917 { 1918 int time; 1919 1920 time = ttspeedtab(tp->t_ospeed, chartimes); 1921 1922 if (time > 0) { 1923 if (time < nchar) 1924 time = nchar / time; 1925 else 1926 time = 2; 1927 } else { 1928 DPRINT((pp, DBG_START, 1929 "bad char time value! %d\n", time)); 1930 time = hz/10; 1931 } 1932 1933 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1934 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1935 } else { 1936 pp->sp_state |= SS_LSTART; 1937 } 1938 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1939 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1940 } 1941 1942out: 1943 splx(oldspl); 1944 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1945} 1946 1947/* 1948 * Note: called at splsoftclock from the timeout code 1949 * This has to deal with two things... cause wakeups while waiting for 1950 * tty drains on last process exit, and call l_start at about the right 1951 * time for protocols like ppp. 1952 */ 1953static void 1954si_lstart(void *arg) 1955{ 1956 struct si_port *pp = arg; 1957 struct tty *tp; 1958 int oldspl; 1959 1960 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1961 pp, pp->sp_state)); 1962 1963 oldspl = spltty(); 1964 1965 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1966 splx(oldspl); 1967 return; 1968 } 1969 pp->sp_state &= ~SS_LSTART; 1970 pp->sp_state |= SS_INLSTART; 1971 1972 tp = pp->sp_tty; 1973 1974 /* deal with the process exit case */ 1975 ttwwakeup(tp); 1976 1977 /* nudge protocols - eg: ppp */ 1978 (*linesw[tp->t_line].l_start)(tp); 1979 1980 pp->sp_state &= ~SS_INLSTART; 1981 splx(oldspl); 1982} 1983 1984/* 1985 * Stop output on a line. called at spltty(); 1986 */ 1987static void 1988si_stop(struct tty *tp, int rw) 1989{ 1990 volatile struct si_channel *ccbp; 1991 struct si_port *pp; 1992 1993 pp = TP2PP(tp); 1994 ccbp = pp->sp_ccb; 1995 1996 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1997 1998 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1999 if (rw & FWRITE) { 2000 /* what level are we meant to be flushing anyway? */ 2001 if (tp->t_state & TS_BUSY) { 2002 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 2003 tp->t_state &= ~TS_BUSY; 2004 ttwwakeup(tp); /* Bruce???? */ 2005 } 2006 } 2007#if 1 /* XXX: this doesn't work right yet.. */ 2008 /* XXX: this may have been failing because we used to call l_rint() 2009 * while we were looping based on these two counters. Now, we collect 2010 * the data and then loop stuffing it into l_rint(), making this 2011 * useless. Should we cause this to blow away the staging buffer? 2012 */ 2013 if (rw & FREAD) { 2014 ccbp->hi_rxopos = ccbp->hi_rxipos; 2015 } 2016#endif 2017} 2018 2019/* 2020 * Issue a command to the host card CPU. 2021 */ 2022 2023static void 2024si_command(struct si_port *pp, int cmd, int waitflag) 2025{ 2026 int oldspl; 2027 volatile struct si_channel *ccbp = pp->sp_ccb; 2028 int x; 2029 2030 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2031 pp, cmd, waitflag, ccbp->hi_stat)); 2032 2033 oldspl = spltty(); /* Keep others out */ 2034 2035 /* wait until it's finished what it was doing.. */ 2036 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2037 * is turned off. */ 2038 while((x = ccbp->hi_stat) != IDLE_OPEN && 2039 x != IDLE_CLOSE && 2040 x != IDLE_BREAK && 2041 x != cmd) { 2042 if (in_intr) { /* Prevent sleep in intr */ 2043 DPRINT((pp, DBG_PARAM, 2044 "cmd intr collision - completing %d\trequested %d\n", 2045 x, cmd)); 2046 splx(oldspl); 2047 return; 2048 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2049 "sicmd1", 1)) { 2050 splx(oldspl); 2051 return; 2052 } 2053 } 2054 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2055 2056 /* if there was a pending command, cause a state-change wakeup */ 2057 switch(pp->sp_pend) { 2058 case LOPEN: 2059 case MPEND: 2060 case MOPEN: 2061 case CONFIG: 2062 case SBREAK: 2063 case EBREAK: 2064 wakeup(&pp->sp_state); 2065 break; 2066 default: 2067 break; 2068 } 2069 2070 pp->sp_pend = cmd; /* New command pending */ 2071 ccbp->hi_stat = cmd; /* Post it */ 2072 2073 if (waitflag) { 2074 if (in_intr) { /* If in interrupt handler */ 2075 DPRINT((pp, DBG_PARAM, 2076 "attempt to sleep in si_intr - cmd req %d\n", 2077 cmd)); 2078 splx(oldspl); 2079 return; 2080 } else while(ccbp->hi_stat != IDLE_OPEN && 2081 ccbp->hi_stat != IDLE_BREAK) { 2082 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2083 "sicmd2", 0)) 2084 break; 2085 } 2086 } 2087 splx(oldspl); 2088} 2089 2090static void 2091si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2092{ 2093 /* 2094 * XXX can skip a lot more cases if Smarts. Maybe 2095 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2096 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2097 */ 2098 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2099 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2100 (!(t->c_iflag & PARMRK) || 2101 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2102 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2103 linesw[tp->t_line].l_rint == ttyinput) 2104 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2105 else 2106 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2107 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2108 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2109 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2110 pp->sp_hotchar)); 2111} 2112 2113 2114#ifdef SI_DEBUG 2115 2116void 2117si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2118{ 2119 va_list ap; 2120 2121 if ((pp == NULL && (si_debug&flags)) || 2122 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2123 if (pp != NULL) 2124 printf("%ci%d(%d): ", 's', 2125 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2126 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2127 va_start(ap, fmt); 2128 vprintf(fmt, ap); 2129 va_end(ap); 2130 } 2131} 2132 2133static char * 2134si_mctl2str(enum si_mctl cmd) 2135{ 2136 switch (cmd) { 2137 case GET: 2138 return("GET"); 2139 case SET: 2140 return("SET"); 2141 case BIS: 2142 return("BIS"); 2143 case BIC: 2144 return("BIC"); 2145 } 2146 return("BAD"); 2147} 2148 2149#endif /* DEBUG */ 2150 2151static char * 2152si_modulename(int host_type, int uart_type) 2153{ 2154 switch (host_type) { 2155 /* Z280 based cards */ 2156 case SIEISA: 2157 case SIHOST2: 2158 case SIHOST: 2159 case SIPCI: 2160 switch (uart_type) { 2161 case 0: 2162 return(" (XIO)"); 2163 case 1: 2164 return(" (SI)"); 2165 } 2166 break; 2167 /* T225 based hosts */ 2168 case SIJETPCI: 2169 case SIJETISA: 2170 switch (uart_type) { 2171 case 0: 2172 return(" (SI)"); 2173 case 40: 2174 return(" (XIO)"); 2175 case 72: 2176 return(" (SXDC)"); 2177 } 2178 break; 2179 } 2180 return(""); 2181} 2182