si.c revision 129939
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 129939 2004-06-01 11:57:15Z phk $"); 37 38#ifndef lint 39static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", 40 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", 41 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; 42#endif /* not lint */ 43 44#include "opt_compat.h" 45#include "opt_debug_si.h" 46#include "opt_tty.h" 47 48#include <sys/param.h> 49#include <sys/systm.h> 50#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 51#include <sys/ioctl_compat.h> 52#endif 53#include <sys/tty.h> 54#include <sys/conf.h> 55#include <sys/fcntl.h> 56#include <sys/kernel.h> 57#include <sys/malloc.h> 58#include <sys/sysctl.h> 59#include <sys/bus.h> 60#include <machine/bus.h> 61#include <sys/rman.h> 62#include <machine/resource.h> 63 64 65#include <vm/vm.h> 66#include <vm/pmap.h> 67 68#include <machine/stdarg.h> 69 70#include <dev/si/sireg.h> 71#include <dev/si/sivar.h> 72#include <dev/si/si.h> 73 74/* 75 * This device driver is designed to interface the Specialix International 76 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, 77 * EISA or PCI bus machine. 78 * 79 * The controller is interfaced to the host via dual port RAM 80 * and an interrupt. 81 * 82 * The code for the Host 1 (very old ISA cards) has not been tested. 83 */ 84 85#define POLL /* turn on poller to scan for lost interrupts */ 86#define REALPOLL /* on each poll, scan for work regardless */ 87#define POLLHZ (hz/10) /* 10 times per second */ 88#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) 89#define INT_COUNT 25000 /* max of 125 ints per second */ 90#define JET_INT_COUNT 100 /* max of 100 ints per second */ 91#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ 92 93enum si_mctl { GET, SET, BIS, BIC }; 94 95static void si_command(struct si_port *, int, int); 96static int si_modem(struct si_port *, enum si_mctl, int); 97static void si_write_enable(struct si_port *, int); 98static int si_Sioctl(dev_t, u_long, caddr_t, int, struct thread *); 99static void si_start(struct tty *); 100static void si_stop(struct tty *, int); 101static timeout_t si_lstart; 102static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp); 103static void sihardclose(struct si_port *pp); 104static void sidtrwakeup(void *chan); 105 106#ifdef SI_DEBUG 107static char *si_mctl2str(enum si_mctl cmd); 108#endif 109 110static int siparam(struct tty *, struct termios *); 111 112static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); 113static char * si_modulename(int host_type, int uart_type); 114 115static d_open_t siopen; 116static d_close_t siclose; 117static d_write_t siwrite; 118static d_ioctl_t siioctl; 119 120static struct cdevsw si_cdevsw = { 121 .d_version = D_VERSION, 122 .d_open = siopen, 123 .d_close = siclose, 124 .d_write = siwrite, 125 .d_ioctl = siioctl, 126 .d_name = "si", 127 .d_flags = D_TTY | D_NEEDGIANT, 128}; 129 130static int si_Nports; 131static int si_Nmodules; 132static int si_debug = 0; /* data, not bss, so it's patchable */ 133 134SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 135TUNABLE_INT("machdep.si_debug", &si_debug); 136 137static int si_numunits; 138 139devclass_t si_devclass; 140 141#ifndef B2000 /* not standard, but the hardware knows it. */ 142# define B2000 2000 143#endif 144static struct speedtab bdrates[] = { 145 { B75, CLK75, }, /* 0x0 */ 146 { B110, CLK110, }, /* 0x1 */ 147 { B150, CLK150, }, /* 0x3 */ 148 { B300, CLK300, }, /* 0x4 */ 149 { B600, CLK600, }, /* 0x5 */ 150 { B1200, CLK1200, }, /* 0x6 */ 151 { B2000, CLK2000, }, /* 0x7 */ 152 { B2400, CLK2400, }, /* 0x8 */ 153 { B4800, CLK4800, }, /* 0x9 */ 154 { B9600, CLK9600, }, /* 0xb */ 155 { B19200, CLK19200, }, /* 0xc */ 156 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 157 { B57600, CLK57600, }, /* 0xd */ 158 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 159 { -1, -1 }, 160}; 161 162 163/* populated with approx character/sec rates - translated at card 164 * initialisation time to chars per tick of the clock */ 165static int done_chartimes = 0; 166static struct speedtab chartimes[] = { 167 { B75, 8, }, 168 { B110, 11, }, 169 { B150, 15, }, 170 { B300, 30, }, 171 { B600, 60, }, 172 { B1200, 120, }, 173 { B2000, 200, }, 174 { B2400, 240, }, 175 { B4800, 480, }, 176 { B9600, 960, }, 177 { B19200, 1920, }, 178 { B38400, 3840, }, 179 { B57600, 5760, }, 180 { B115200, 11520, }, 181 { -1, -1 }, 182}; 183static volatile int in_intr = 0; /* Inside interrupt handler? */ 184 185#ifdef POLL 186static int si_pollrate; /* in addition to irq */ 187static int si_realpoll = 0; /* poll HW on timer */ 188 189SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 190SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 191 192static int init_finished = 0; 193static void si_poll(void *); 194#endif 195 196/* 197 * Array of adapter types and the corresponding RAM size. The order of 198 * entries here MUST match the ordinal of the adapter type. 199 */ 200static char *si_type[] = { 201 "EMPTY", 202 "SIHOST", 203 "SIMCA", /* FreeBSD does not support Microchannel */ 204 "SIHOST2", 205 "SIEISA", 206 "SIPCI", 207 "SXPCI", 208 "SXISA", 209}; 210 211/* 212 * We have to make an 8 bit version of bcopy, since some cards can't 213 * deal with 32 bit I/O 214 */ 215static void __inline 216si_bcopy(const void *src, void *dst, size_t len) 217{ 218 while (len--) 219 *(((u_char *)dst)++) = *(((const u_char *)src)++); 220} 221static void __inline 222si_vbcopy(const volatile void *src, void *dst, size_t len) 223{ 224 while (len--) 225 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++); 226} 227static void __inline 228si_bcopyv(const void *src, volatile void *dst, size_t len) 229{ 230 while (len--) 231 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++); 232} 233 234 235/* 236 * Attach the device. Initialize the card. 237 */ 238int 239siattach(device_t dev) 240{ 241 int unit; 242 struct si_softc *sc; 243 struct si_port *pp; 244 volatile struct si_channel *ccbp; 245 volatile struct si_reg *regp; 246 volatile caddr_t maddr; 247 struct si_module *modp; 248 struct speedtab *spt; 249 int nmodule, nport, x, y; 250 int uart_type; 251 252 sc = device_get_softc(dev); 253 unit = device_get_unit(dev); 254 255 sc->sc_typename = si_type[sc->sc_type]; 256 if (si_numunits < unit + 1) 257 si_numunits = unit + 1; 258 259 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 260 261#ifdef POLL 262 if (si_pollrate == 0) { 263 si_pollrate = POLLHZ; /* in addition to irq */ 264#ifdef REALPOLL 265 si_realpoll = 1; /* scan always */ 266#endif 267 } 268#endif 269 270 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 271 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 272 273 sc->sc_ports = NULL; /* mark as uninitialised */ 274 275 maddr = sc->sc_maddr; 276 277 /* Stop the CPU first so it won't stomp around while we load */ 278 279 switch (sc->sc_type) { 280 case SIEISA: 281 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 282 break; 283 case SIPCI: 284 *(maddr+SIPCIRESET) = 0; 285 break; 286 case SIJETPCI: /* fall through to JET ISA */ 287 case SIJETISA: 288 *(maddr+SIJETCONFIG) = 0; 289 break; 290 case SIHOST2: 291 *(maddr+SIPLRESET) = 0; 292 break; 293 case SIHOST: 294 *(maddr+SIRESET) = 0; 295 break; 296 default: /* this should never happen */ 297 printf("si%d: unsupported configuration\n", unit); 298 return EINVAL; 299 break; 300 } 301 302 /* OK, now lets download the download code */ 303 304 if (SI_ISJET(sc->sc_type)) { 305 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 306 unit, si3_t225_dsize)); 307 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 308 si3_t225_dsize); 309 DPRINT((0, DBG_DOWNLOAD, 310 "si%d: jet_bootstrap: nbytes %d -> %x\n", 311 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 312 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 313 si3_t225_bsize); 314 } else { 315 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 316 unit, si2_z280_dsize)); 317 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 318 si2_z280_dsize); 319 } 320 321 /* Now start the CPU */ 322 323 switch (sc->sc_type) { 324 case SIEISA: 325 /* modify the download code to tell it that it's on an EISA */ 326 *(maddr + 0x42) = 1; 327 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 328 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 329 break; 330 case SIPCI: 331 /* modify the download code to tell it that it's on a PCI */ 332 *(maddr+0x42) = 1; 333 *(maddr+SIPCIRESET) = 1; 334 *(maddr+SIPCIINTCL) = 0; 335 break; 336 case SIJETPCI: 337 *(maddr+SIJETRESET) = 0; 338 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 339 break; 340 case SIJETISA: 341 *(maddr+SIJETRESET) = 0; 342 switch (sc->sc_irq) { 343 case 9: 344 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 345 break; 346 case 10: 347 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 348 break; 349 case 11: 350 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 351 break; 352 case 12: 353 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 354 break; 355 case 15: 356 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 357 break; 358 } 359 break; 360 case SIHOST: 361 *(maddr+SIRESET_CL) = 0; 362 *(maddr+SIINTCL_CL) = 0; 363 break; 364 case SIHOST2: 365 *(maddr+SIPLRESET) = 0x10; 366 switch (sc->sc_irq) { 367 case 11: 368 *(maddr+SIPLIRQ11) = 0x10; 369 break; 370 case 12: 371 *(maddr+SIPLIRQ12) = 0x10; 372 break; 373 case 15: 374 *(maddr+SIPLIRQ15) = 0x10; 375 break; 376 } 377 *(maddr+SIPLIRQCLR) = 0x10; 378 break; 379 default: /* this should _REALLY_ never happen */ 380 printf("si%d: Uh, it was supported a second ago...\n", unit); 381 return EINVAL; 382 } 383 384 DELAY(1000000); /* wait around for a second */ 385 386 regp = (struct si_reg *)maddr; 387 y = 0; 388 /* wait max of 5 sec for init OK */ 389 while (regp->initstat == 0 && y++ < 10) { 390 DELAY(500000); 391 } 392 switch (regp->initstat) { 393 case 0: 394 printf("si%d: startup timeout - aborting\n", unit); 395 sc->sc_type = SIEMPTY; 396 return EINVAL; 397 case 1: 398 if (SI_ISJET(sc->sc_type)) { 399 /* set throttle to 100 times per second */ 400 regp->int_count = JET_INT_COUNT; 401 /* rx_intr_count is a NOP in Jet */ 402 } else { 403 /* set throttle to 125 times per second */ 404 regp->int_count = INT_COUNT; 405 /* rx intr max of 25 times per second */ 406 regp->rx_int_count = RXINT_COUNT; 407 } 408 regp->int_pending = 0; /* no intr pending */ 409 regp->int_scounter = 0; /* reset counter */ 410 break; 411 case 0xff: 412 /* 413 * No modules found, so give up on this one. 414 */ 415 printf("si%d: %s - no ports found\n", unit, 416 si_type[sc->sc_type]); 417 return 0; 418 default: 419 printf("si%d: download code version error - initstat %x\n", 420 unit, regp->initstat); 421 return EINVAL; 422 } 423 424 /* 425 * First time around the ports just count them in order 426 * to allocate some memory. 427 */ 428 nport = 0; 429 modp = (struct si_module *)(maddr + 0x80); 430 for (;;) { 431 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 432 switch (modp->sm_type) { 433 case TA4: 434 DPRINT((0, DBG_DOWNLOAD, 435 "si%d: Found old TA4 module, 4 ports\n", 436 unit)); 437 x = 4; 438 break; 439 case TA8: 440 DPRINT((0, DBG_DOWNLOAD, 441 "si%d: Found old TA8 module, 8 ports\n", 442 unit)); 443 x = 8; 444 break; 445 case TA4_ASIC: 446 DPRINT((0, DBG_DOWNLOAD, 447 "si%d: Found ASIC TA4 module, 4 ports\n", 448 unit)); 449 x = 4; 450 break; 451 case TA8_ASIC: 452 DPRINT((0, DBG_DOWNLOAD, 453 "si%d: Found ASIC TA8 module, 8 ports\n", 454 unit)); 455 x = 8; 456 break; 457 case MTA: 458 DPRINT((0, DBG_DOWNLOAD, 459 "si%d: Found CD1400 module, 8 ports\n", 460 unit)); 461 x = 8; 462 break; 463 case SXDC: 464 DPRINT((0, DBG_DOWNLOAD, 465 "si%d: Found SXDC module, 8 ports\n", 466 unit)); 467 x = 8; 468 break; 469 default: 470 printf("si%d: unknown module type %d\n", 471 unit, modp->sm_type); 472 goto try_next; 473 } 474 475 /* this was limited in firmware and is also a driver issue */ 476 if ((nport + x) > SI_MAXPORTPERCARD) { 477 printf("si%d: extra ports ignored\n", unit); 478 goto try_next; 479 } 480 481 nport += x; 482 si_Nports += x; 483 si_Nmodules++; 484 485try_next: 486 if (modp->sm_next == 0) 487 break; 488 modp = (struct si_module *) 489 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 490 } 491 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 492 M_DEVBUF, M_NOWAIT | M_ZERO); 493 if (sc->sc_ports == 0) { 494 printf("si%d: fail to malloc memory for port structs\n", 495 unit); 496 return EINVAL; 497 } 498 sc->sc_nport = nport; 499 500 /* 501 * Scan round the ports again, this time initialising. 502 */ 503 pp = sc->sc_ports; 504 nmodule = 0; 505 modp = (struct si_module *)(maddr + 0x80); 506 uart_type = 1000; /* arbitary, > uchar_max */ 507 for (;;) { 508 switch (modp->sm_type) { 509 case TA4: 510 nport = 4; 511 break; 512 case TA8: 513 nport = 8; 514 break; 515 case TA4_ASIC: 516 nport = 4; 517 break; 518 case TA8_ASIC: 519 nport = 8; 520 break; 521 case MTA: 522 nport = 8; 523 break; 524 case SXDC: 525 nport = 8; 526 break; 527 default: 528 goto try_next2; 529 } 530 nmodule++; 531 ccbp = (struct si_channel *)((char *)modp + 0x100); 532 if (uart_type == 1000) 533 uart_type = ccbp->type; 534 else if (uart_type != ccbp->type) 535 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 536 unit, nmodule, 537 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 538 uart_type, si_modulename(sc->sc_type, uart_type)); 539 540 for (x = 0; x < nport; x++, pp++, ccbp++) { 541 pp->sp_ccb = ccbp; /* save the address */ 542 pp->sp_tty = ttymalloc(NULL); 543 pp->sp_pend = IDLE_CLOSE; 544 pp->sp_state = 0; /* internal flag */ 545 pp->sp_dtr_wait = 3 * hz; 546 pp->sp_iin.c_iflag = TTYDEF_IFLAG; 547 pp->sp_iin.c_oflag = TTYDEF_OFLAG; 548 pp->sp_iin.c_cflag = TTYDEF_CFLAG; 549 pp->sp_iin.c_lflag = TTYDEF_LFLAG; 550 termioschars(&pp->sp_iin); 551 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = 552 TTYDEF_SPEED;; 553 pp->sp_iout = pp->sp_iin; 554 } 555try_next2: 556 if (modp->sm_next == 0) { 557 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 558 unit, 559 sc->sc_typename, 560 sc->sc_nport, 561 nmodule, 562 uart_type, 563 si_modulename(sc->sc_type, uart_type)); 564 break; 565 } 566 modp = (struct si_module *) 567 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 568 } 569 if (done_chartimes == 0) { 570 for (spt = chartimes ; spt->sp_speed != -1; spt++) { 571 if ((spt->sp_code /= hz) == 0) 572 spt->sp_code = 1; 573 } 574 done_chartimes = 1; 575 } 576 577/* path name devsw minor type uid gid perm*/ 578 for (x = 0; x < sc->sc_nport; x++) { 579 /* sync with the manuals that start at 1 */ 580 y = x + 1 + unit * (1 << SI_CARDSHIFT); 581 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); 582 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); 583 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); 584 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); 585 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); 586 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); 587 } 588 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); 589 return (0); 590} 591 592static int 593siopen(dev_t dev, int flag, int mode, struct thread *td) 594{ 595 int oldspl, error; 596 int card, port; 597 struct si_softc *sc; 598 struct tty *tp; 599 volatile struct si_channel *ccbp; 600 struct si_port *pp; 601 int mynor = minor(dev); 602 603 /* quickly let in /dev/si_control */ 604 if (IS_CONTROLDEV(mynor)) { 605 if ((error = suser(td))) 606 return(error); 607 return(0); 608 } 609 610 card = SI_CARD(mynor); 611 sc = devclass_get_softc(si_devclass, card); 612 if (sc == NULL) 613 return (ENXIO); 614 615 if (sc->sc_type == SIEMPTY) { 616 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", 617 card, sc->sc_typename)); 618 return(ENXIO); 619 } 620 621 port = SI_PORT(mynor); 622 if (port >= sc->sc_nport) { 623 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", 624 card, sc->sc_nport)); 625 return(ENXIO); 626 } 627 628#ifdef POLL 629 /* 630 * We've now got a device, so start the poller. 631 */ 632 if (init_finished == 0) { 633 timeout(si_poll, (caddr_t)0L, si_pollrate); 634 init_finished = 1; 635 } 636#endif 637 638 /* initial/lock device */ 639 if (IS_STATE(mynor)) { 640 return(0); 641 } 642 643 pp = sc->sc_ports + port; 644 tp = pp->sp_tty; /* the "real" tty */ 645 dev->si_tty = tp; 646 ccbp = pp->sp_ccb; /* Find control block */ 647 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", 648 devtoname(dev), flag, mode, td)); 649 650 oldspl = spltty(); /* Keep others out */ 651 error = 0; 652 653open_top: 654 while (pp->sp_state & SS_DTR_OFF) { 655 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0); 656 if (error != 0) 657 goto out; 658 } 659 660 if (tp->t_state & TS_ISOPEN) { 661 /* 662 * The device is open, so everything has been initialised. 663 * handle conflicts. 664 */ 665 if (IS_CALLOUT(mynor)) { 666 if (!pp->sp_active_out) { 667 error = EBUSY; 668 goto out; 669 } 670 } else { 671 if (pp->sp_active_out) { 672 if (flag & O_NONBLOCK) { 673 error = EBUSY; 674 goto out; 675 } 676 error = tsleep(&pp->sp_active_out, 677 TTIPRI|PCATCH, "sibi", 0); 678 if (error != 0) 679 goto out; 680 goto open_top; 681 } 682 } 683 if (tp->t_state & TS_XCLUDE && 684 suser(td)) { 685 DPRINT((pp, DBG_OPEN|DBG_FAIL, 686 "already open and EXCLUSIVE set\n")); 687 error = EBUSY; 688 goto out; 689 } 690 } else { 691 /* 692 * The device isn't open, so there are no conflicts. 693 * Initialize it. Avoid sleep... :-) 694 */ 695 DPRINT((pp, DBG_OPEN, "first open\n")); 696 tp->t_oproc = si_start; 697 tp->t_stop = si_stop; 698 tp->t_param = siparam; 699 tp->t_dev = dev; 700 tp->t_termios = mynor & SI_CALLOUT_MASK 701 ? pp->sp_iout : pp->sp_iin; 702 703 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 704 705 ++pp->sp_wopeners; /* in case of sleep in siparam */ 706 707 error = siparam(tp, &tp->t_termios); 708 709 --pp->sp_wopeners; 710 if (error != 0) 711 goto out; 712 /* XXX: we should goto_top if siparam slept */ 713 714 /* set initial DCD state */ 715 pp->sp_last_hi_ip = ccbp->hi_ip; 716 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { 717 (*linesw[tp->t_line].l_modem)(tp, 1); 718 } 719 } 720 721 /* whoops! we beat the close! */ 722 if (pp->sp_state & SS_CLOSING) { 723 /* try and stop it from proceeding to bash the hardware */ 724 pp->sp_state &= ~SS_CLOSING; 725 } 726 727 /* 728 * Wait for DCD if necessary 729 */ 730 if (!(tp->t_state & TS_CARR_ON) && 731 !IS_CALLOUT(mynor) && 732 !(tp->t_cflag & CLOCAL) && 733 !(flag & O_NONBLOCK)) { 734 ++pp->sp_wopeners; 735 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); 736 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); 737 --pp->sp_wopeners; 738 if (error != 0) 739 goto out; 740 goto open_top; 741 } 742 743 error = (*linesw[tp->t_line].l_open)(dev, tp); 744 si_disc_optim(tp, &tp->t_termios, pp); 745 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) 746 pp->sp_active_out = TRUE; 747 748 pp->sp_state |= SS_OPEN; /* made it! */ 749 750out: 751 splx(oldspl); 752 753 DPRINT((pp, DBG_OPEN, "leaving siopen\n")); 754 755 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) 756 sihardclose(pp); 757 758 return(error); 759} 760 761static int 762siclose(dev_t dev, int flag, int mode, struct thread *td) 763{ 764 struct si_port *pp; 765 struct tty *tp; 766 int oldspl; 767 int error = 0; 768 int mynor = minor(dev); 769 770 if (IS_SPECIAL(mynor)) 771 return(0); 772 773 oldspl = spltty(); 774 775 pp = MINOR2PP(mynor); 776 tp = pp->sp_tty; 777 778 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", 779 devtoname(dev), flag, mode, td, pp->sp_state)); 780 781 /* did we sleep and loose a race? */ 782 if (pp->sp_state & SS_CLOSING) { 783 /* error = ESOMETING? */ 784 goto out; 785 } 786 787 /* begin race detection.. */ 788 pp->sp_state |= SS_CLOSING; 789 790 si_write_enable(pp, 0); /* block writes for ttywait() */ 791 792 /* THIS MAY SLEEP IN TTYWAIT!!! */ 793 (*linesw[tp->t_line].l_close)(tp, flag); 794 795 si_write_enable(pp, 1); 796 797 /* did we sleep and somebody started another open? */ 798 if (!(pp->sp_state & SS_CLOSING)) { 799 /* error = ESOMETING? */ 800 goto out; 801 } 802 /* ok. we are now still on the right track.. nuke the hardware */ 803 804 if (pp->sp_state & SS_LSTART) { 805 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 806 pp->sp_state &= ~SS_LSTART; 807 } 808 809 sihardclose(pp); 810 ttyclose(tp); 811 pp->sp_state &= ~SS_OPEN; 812 813out: 814 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 815 splx(oldspl); 816 return(error); 817} 818 819static void 820sihardclose(struct si_port *pp) 821{ 822 int oldspl; 823 struct tty *tp; 824 volatile struct si_channel *ccbp; 825 826 oldspl = spltty(); 827 828 tp = pp->sp_tty; 829 ccbp = pp->sp_ccb; /* Find control block */ 830 if (tp->t_cflag & HUPCL || 831 (!pp->sp_active_out && 832 !(ccbp->hi_ip & IP_DCD) && 833 !(pp->sp_iin.c_cflag && CLOCAL)) || 834 !(tp->t_state & TS_ISOPEN)) { 835 836 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 837 (void) si_command(pp, FCLOSE, SI_NOWAIT); 838 839 if (pp->sp_dtr_wait != 0) { 840 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 841 pp->sp_state |= SS_DTR_OFF; 842 } 843 844 } 845 pp->sp_active_out = FALSE; 846 wakeup(&pp->sp_active_out); 847 wakeup(TSA_CARR_ON(tp)); 848 849 splx(oldspl); 850} 851 852 853/* 854 * called at splsoftclock()... 855 */ 856static void 857sidtrwakeup(void *chan) 858{ 859 struct si_port *pp; 860 int oldspl; 861 862 oldspl = spltty(); 863 864 pp = (struct si_port *)chan; 865 pp->sp_state &= ~SS_DTR_OFF; 866 wakeup(&pp->sp_dtr_wait); 867 868 splx(oldspl); 869} 870 871static int 872siwrite(dev_t dev, struct uio *uio, int flag) 873{ 874 struct si_port *pp; 875 struct tty *tp; 876 int error = 0; 877 int mynor = minor(dev); 878 int oldspl; 879 880 if (IS_SPECIAL(mynor)) { 881 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 882 return(ENODEV); 883 } 884 pp = MINOR2PP(mynor); 885 tp = pp->sp_tty; 886 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 887 888 oldspl = spltty(); 889 /* 890 * If writes are currently blocked, wait on the "real" tty 891 */ 892 while (pp->sp_state & SS_BLOCKWRITE) { 893 pp->sp_state |= SS_WAITWRITE; 894 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 895 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 896 "siwrite", tp->t_timeout))) { 897 if (error == EWOULDBLOCK) 898 error = EIO; 899 goto out; 900 } 901 } 902 903 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 904out: 905 splx(oldspl); 906 return (error); 907} 908 909 910static int 911siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 912{ 913 struct si_port *pp; 914 struct tty *tp; 915 int error; 916 int mynor = minor(dev); 917 int oldspl; 918 int blocked = 0; 919#if defined(COMPAT_43) 920 u_long oldcmd; 921 struct termios term; 922#endif 923 924 if (IS_SI_IOCTL(cmd)) 925 return(si_Sioctl(dev, cmd, data, flag, td)); 926 927 pp = MINOR2PP(mynor); 928 tp = pp->sp_tty; 929 930 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 931 devtoname(dev), cmd, data, flag)); 932 if (IS_STATE(mynor)) { 933 struct termios *ct; 934 935 switch (mynor & SI_STATE_MASK) { 936 case SI_INIT_STATE_MASK: 937 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 938 break; 939 case SI_LOCK_STATE_MASK: 940 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 941 break; 942 default: 943 return (ENODEV); 944 } 945 switch (cmd) { 946 case TIOCSETA: 947 error = suser(td); 948 if (error != 0) 949 return (error); 950 *ct = *(struct termios *)data; 951 return (0); 952 case TIOCGETA: 953 *(struct termios *)data = *ct; 954 return (0); 955 case TIOCGETD: 956 *(int *)data = TTYDISC; 957 return (0); 958 case TIOCGWINSZ: 959 bzero(data, sizeof(struct winsize)); 960 return (0); 961 default: 962 return (ENOTTY); 963 } 964 } 965 /* 966 * Do the old-style ioctl compat routines... 967 */ 968#if defined(COMPAT_43) 969 term = tp->t_termios; 970 oldcmd = cmd; 971 error = ttsetcompat(tp, &cmd, data, &term); 972 if (error != 0) 973 return (error); 974 if (cmd != oldcmd) 975 data = (caddr_t)&term; 976#endif 977 /* 978 * Do the initial / lock state business 979 */ 980 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 981 int cc; 982 struct termios *dt = (struct termios *)data; 983 struct termios *lt = mynor & SI_CALLOUT_MASK 984 ? &pp->sp_lout : &pp->sp_lin; 985 986 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 987 (dt->c_iflag & ~lt->c_iflag); 988 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 989 (dt->c_oflag & ~lt->c_oflag); 990 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 991 (dt->c_cflag & ~lt->c_cflag); 992 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 993 (dt->c_lflag & ~lt->c_lflag); 994 for (cc = 0; cc < NCCS; ++cc) 995 if (lt->c_cc[cc] != 0) 996 dt->c_cc[cc] = tp->t_cc[cc]; 997 if (lt->c_ispeed != 0) 998 dt->c_ispeed = tp->t_ispeed; 999 if (lt->c_ospeed != 0) 1000 dt->c_ospeed = tp->t_ospeed; 1001 } 1002 1003 /* 1004 * Block user-level writes to give the ttywait() 1005 * a chance to completely drain for commands 1006 * that require the port to be in a quiescent state. 1007 */ 1008 switch (cmd) { 1009 case TIOCSETAW: 1010 case TIOCSETAF: 1011 case TIOCDRAIN: 1012#ifdef COMPAT_43 1013 case TIOCSETP: 1014#endif 1015 blocked++; /* block writes for ttywait() and siparam() */ 1016 si_write_enable(pp, 0); 1017 } 1018 1019 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, td); 1020 if (error != ENOIOCTL) 1021 goto out; 1022 1023 oldspl = spltty(); 1024 1025 error = ttioctl(tp, cmd, data, flag); 1026 si_disc_optim(tp, &tp->t_termios, pp); 1027 if (error != ENOIOCTL) { 1028 splx(oldspl); 1029 goto out; 1030 } 1031 1032 error = 0; 1033 switch (cmd) { 1034 case TIOCSBRK: 1035 si_command(pp, SBREAK, SI_WAIT); 1036 break; 1037 case TIOCCBRK: 1038 si_command(pp, EBREAK, SI_WAIT); 1039 break; 1040 case TIOCSDTR: 1041 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1042 break; 1043 case TIOCCDTR: 1044 (void) si_modem(pp, SET, 0); 1045 break; 1046 case TIOCMSET: 1047 (void) si_modem(pp, SET, *(int *)data); 1048 break; 1049 case TIOCMBIS: 1050 (void) si_modem(pp, BIS, *(int *)data); 1051 break; 1052 case TIOCMBIC: 1053 (void) si_modem(pp, BIC, *(int *)data); 1054 break; 1055 case TIOCMGET: 1056 *(int *)data = si_modem(pp, GET, 0); 1057 break; 1058 case TIOCMSDTRWAIT: 1059 /* must be root since the wait applies to following logins */ 1060 error = suser(td); 1061 if (error == 0) 1062 pp->sp_dtr_wait = *(int *)data * hz / 100; 1063 break; 1064 case TIOCMGDTRWAIT: 1065 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1066 break; 1067 default: 1068 error = ENOTTY; 1069 } 1070 splx(oldspl); 1071 1072out: 1073 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1074 if (blocked) 1075 si_write_enable(pp, 1); 1076 return(error); 1077} 1078 1079/* 1080 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1081 */ 1082static int 1083si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct thread *td) 1084{ 1085 struct si_softc *xsc; 1086 struct si_port *xpp; 1087 volatile struct si_reg *regp; 1088 struct si_tcsi *dp; 1089 struct si_pstat *sps; 1090 int *ip, error = 0; 1091 int oldspl; 1092 int card, port; 1093 int mynor = minor(dev); 1094 1095 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1096 devtoname(dev), cmd, data, flag)); 1097 1098#if 1 1099 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1100 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1101 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1102#endif 1103 1104 if (!IS_CONTROLDEV(mynor)) { 1105 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1106 return(ENODEV); 1107 } 1108 1109 oldspl = spltty(); /* better safe than sorry */ 1110 1111 ip = (int *)data; 1112 1113#define SUCHECK if ((error = suser(td))) goto out 1114 1115 switch (cmd) { 1116 case TCSIPORTS: 1117 *ip = si_Nports; 1118 goto out; 1119 case TCSIMODULES: 1120 *ip = si_Nmodules; 1121 goto out; 1122 case TCSISDBG_ALL: 1123 SUCHECK; 1124 si_debug = *ip; 1125 goto out; 1126 case TCSIGDBG_ALL: 1127 *ip = si_debug; 1128 goto out; 1129 default: 1130 /* 1131 * Check that a controller for this port exists 1132 */ 1133 1134 /* may also be a struct si_pstat, a superset of si_tcsi */ 1135 1136 dp = (struct si_tcsi *)data; 1137 sps = (struct si_pstat *)data; 1138 card = dp->tc_card; 1139 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1140 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1141 error = ENOENT; 1142 goto out; 1143 } 1144 /* 1145 * And check that a port exists 1146 */ 1147 port = dp->tc_port; 1148 if (port < 0 || port >= xsc->sc_nport) { 1149 error = ENOENT; 1150 goto out; 1151 } 1152 xpp = xsc->sc_ports + port; 1153 regp = (struct si_reg *)xsc->sc_maddr; 1154 } 1155 1156 switch (cmd) { 1157 case TCSIDEBUG: 1158#ifdef SI_DEBUG 1159 SUCHECK; 1160 if (xpp->sp_debug) 1161 xpp->sp_debug = 0; 1162 else { 1163 xpp->sp_debug = DBG_ALL; 1164 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1165 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1166 } 1167 break; 1168#else 1169 error = ENODEV; 1170 goto out; 1171#endif 1172 case TCSISDBG_LEVEL: 1173 case TCSIGDBG_LEVEL: 1174#ifdef SI_DEBUG 1175 if (cmd == TCSIGDBG_LEVEL) { 1176 dp->tc_dbglvl = xpp->sp_debug; 1177 } else { 1178 SUCHECK; 1179 xpp->sp_debug = dp->tc_dbglvl; 1180 } 1181 break; 1182#else 1183 error = ENODEV; 1184 goto out; 1185#endif 1186 case TCSIGRXIT: 1187 dp->tc_int = regp->rx_int_count; 1188 break; 1189 case TCSIRXIT: 1190 SUCHECK; 1191 regp->rx_int_count = dp->tc_int; 1192 break; 1193 case TCSIGIT: 1194 dp->tc_int = regp->int_count; 1195 break; 1196 case TCSIIT: 1197 SUCHECK; 1198 regp->int_count = dp->tc_int; 1199 break; 1200 case TCSISTATE: 1201 dp->tc_int = xpp->sp_ccb->hi_ip; 1202 break; 1203 /* these next three use a different structure */ 1204 case TCSI_PORT: 1205 SUCHECK; 1206 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1207 break; 1208 case TCSI_CCB: 1209 SUCHECK; 1210 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1211 break; 1212 case TCSI_TTY: 1213 SUCHECK; 1214 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1215 break; 1216 default: 1217 error = EINVAL; 1218 goto out; 1219 } 1220out: 1221 splx(oldspl); 1222 return(error); /* success */ 1223} 1224 1225/* 1226 * siparam() : Configure line params 1227 * called at spltty(); 1228 * this may sleep, does not flush, nor wait for drain, nor block writes 1229 * caller must arrange this if it's important.. 1230 */ 1231static int 1232siparam(struct tty *tp, struct termios *t) 1233{ 1234 struct si_port *pp = TP2PP(tp); 1235 volatile struct si_channel *ccbp; 1236 int oldspl, cflag, iflag, oflag, lflag; 1237 int error = 0; /* shutup gcc */ 1238 int ispeed = 0; /* shutup gcc */ 1239 int ospeed = 0; /* shutup gcc */ 1240 BYTE val; 1241 1242 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1243 cflag = t->c_cflag; 1244 iflag = t->c_iflag; 1245 oflag = t->c_oflag; 1246 lflag = t->c_lflag; 1247 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1248 oflag, cflag, iflag, lflag)); 1249 1250 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1251 1252 /* if not hung up.. */ 1253 if (t->c_ospeed != 0) { 1254 /* translate baud rate to firmware values */ 1255 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1256 ispeed = t->c_ispeed ? 1257 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1258 1259 /* enforce legit baud rate */ 1260 if (ospeed < 0 || ispeed < 0) 1261 return (EINVAL); 1262 } 1263 1264 oldspl = spltty(); 1265 1266 ccbp = pp->sp_ccb; 1267 1268 /* ========== set hi_break ========== */ 1269 val = 0; 1270 if (iflag & IGNBRK) /* Breaks */ 1271 val |= BR_IGN; 1272 if (iflag & BRKINT) /* Interrupt on break? */ 1273 val |= BR_INT; 1274 if (iflag & PARMRK) /* Parity mark? */ 1275 val |= BR_PARMRK; 1276 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1277 val |= BR_PARIGN; 1278 ccbp->hi_break = val; 1279 1280 /* ========== set hi_csr ========== */ 1281 /* if not hung up.. */ 1282 if (t->c_ospeed != 0) { 1283 /* Set I/O speeds */ 1284 val = (ispeed << 4) | ospeed; 1285 } 1286 ccbp->hi_csr = val; 1287 1288 /* ========== set hi_mr2 ========== */ 1289 val = 0; 1290 if (cflag & CSTOPB) /* Stop bits */ 1291 val |= MR2_2_STOP; 1292 else 1293 val |= MR2_1_STOP; 1294 /* 1295 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1296 * a DCE, hence the reverse sense of RTS and CTS 1297 */ 1298 /* Output Flow - RTS must be raised before data can be sent */ 1299 if (cflag & CCTS_OFLOW) 1300 val |= MR2_RTSCONT; 1301 1302 ccbp->hi_mr2 = val; 1303 1304 /* ========== set hi_mr1 ========== */ 1305 val = 0; 1306 if (!(cflag & PARENB)) /* Parity */ 1307 val |= MR1_NONE; 1308 else 1309 val |= MR1_WITH; 1310 if (cflag & PARODD) 1311 val |= MR1_ODD; 1312 1313 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1314 val |= MR1_8_BITS; 1315 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1316 val |= MR1_7_BITS; 1317 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1318 val |= MR1_6_BITS; 1319 } else { /* Must be 5 */ 1320 val |= MR1_5_BITS; 1321 } 1322 /* 1323 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1324 * a DCE, hence the reverse sense of RTS and CTS 1325 */ 1326 /* Input Flow - CTS is raised when port is ready to receive data */ 1327 if (cflag & CRTS_IFLOW) 1328 val |= MR1_CTSCONT; 1329 1330 ccbp->hi_mr1 = val; 1331 1332 /* ========== set hi_mask ========== */ 1333 val = 0xff; 1334 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1335 val &= 0xFF; 1336 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1337 val &= 0x7F; 1338 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1339 val &= 0x3F; 1340 } else { /* Must be 5 */ 1341 val &= 0x1F; 1342 } 1343 if (iflag & ISTRIP) 1344 val &= 0x7F; 1345 1346 ccbp->hi_mask = val; 1347 1348 /* ========== set hi_prtcl ========== */ 1349 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1350 if (iflag & IXANY) 1351 val |= SP_TANY; 1352 if (iflag & IXON) 1353 val |= SP_TXEN; 1354 if (iflag & IXOFF) 1355 val |= SP_RXEN; 1356 if (iflag & INPCK) 1357 val |= SP_PAEN; 1358 1359 ccbp->hi_prtcl = val; 1360 1361 1362 /* ========== set hi_{rx|tx}{on|off} ========== */ 1363 /* XXX: the card TOTALLY shields us from the flow control... */ 1364 ccbp->hi_txon = t->c_cc[VSTART]; 1365 ccbp->hi_txoff = t->c_cc[VSTOP]; 1366 1367 ccbp->hi_rxon = t->c_cc[VSTART]; 1368 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1369 1370 /* ========== send settings to the card ========== */ 1371 /* potential sleep here */ 1372 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1373 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1374 else 1375 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1376 1377 /* ========== set DTR etc ========== */ 1378 /* Hangup if ospeed == 0 */ 1379 if (t->c_ospeed == 0) { 1380 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1381 } else { 1382 /* 1383 * If the previous speed was 0, may need to re-enable 1384 * the modem signals 1385 */ 1386 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1387 } 1388 1389 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1390 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1391 1392 splx(oldspl); 1393 return(error); 1394} 1395 1396/* 1397 * Enable or Disable the writes to this channel... 1398 * "state" -> enabled = 1; disabled = 0; 1399 */ 1400static void 1401si_write_enable(struct si_port *pp, int state) 1402{ 1403 int oldspl; 1404 1405 oldspl = spltty(); 1406 1407 if (state) { 1408 pp->sp_state &= ~SS_BLOCKWRITE; 1409 if (pp->sp_state & SS_WAITWRITE) { 1410 pp->sp_state &= ~SS_WAITWRITE; 1411 /* thunder away! */ 1412 wakeup(pp); 1413 } 1414 } else { 1415 pp->sp_state |= SS_BLOCKWRITE; 1416 } 1417 1418 splx(oldspl); 1419} 1420 1421/* 1422 * Set/Get state of modem control lines. 1423 * Due to DCE-like behaviour of the adapter, some signals need translation: 1424 * TIOCM_DTR DSR 1425 * TIOCM_RTS CTS 1426 */ 1427static int 1428si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1429{ 1430 volatile struct si_channel *ccbp; 1431 int x; 1432 1433 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1434 ccbp = pp->sp_ccb; /* Find channel address */ 1435 switch (cmd) { 1436 case GET: 1437 x = ccbp->hi_ip; 1438 bits = TIOCM_LE; 1439 if (x & IP_DCD) bits |= TIOCM_CAR; 1440 if (x & IP_DTR) bits |= TIOCM_DTR; 1441 if (x & IP_RTS) bits |= TIOCM_RTS; 1442 if (x & IP_RI) bits |= TIOCM_RI; 1443 return(bits); 1444 case SET: 1445 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1446 /* fall through */ 1447 case BIS: 1448 x = 0; 1449 if (bits & TIOCM_DTR) 1450 x |= OP_DSR; 1451 if (bits & TIOCM_RTS) 1452 x |= OP_CTS; 1453 ccbp->hi_op |= x; 1454 break; 1455 case BIC: 1456 if (bits & TIOCM_DTR) 1457 ccbp->hi_op &= ~OP_DSR; 1458 if (bits & TIOCM_RTS) 1459 ccbp->hi_op &= ~OP_CTS; 1460 } 1461 return 0; 1462} 1463 1464/* 1465 * Handle change of modem state 1466 */ 1467static void 1468si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1469{ 1470 /* if a modem dev */ 1471 if (hi_ip & IP_DCD) { 1472 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1473 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1474 tp->t_line)); 1475 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1476 } 1477 } else { 1478 if (pp->sp_last_hi_ip & IP_DCD) { 1479 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1480 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1481 (void) si_modem(pp, SET, 0); 1482 } 1483 } 1484 pp->sp_last_hi_ip = hi_ip; 1485 1486} 1487 1488/* 1489 * Poller to catch missed interrupts. 1490 * 1491 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1492 * better response. We could really use a "periodic" version timeout(). :-) 1493 */ 1494#ifdef POLL 1495static void 1496si_poll(void *nothing) 1497{ 1498 struct si_softc *sc; 1499 int i; 1500 volatile struct si_reg *regp; 1501 struct si_port *pp; 1502 int lost, oldspl, port; 1503 1504 DPRINT((0, DBG_POLL, "si_poll()\n")); 1505 oldspl = spltty(); 1506 if (in_intr) 1507 goto out; 1508 lost = 0; 1509 for (i = 0; i < si_numunits; i++) { 1510 sc = devclass_get_softc(si_devclass, i); 1511 if (sc == NULL || sc->sc_type == SIEMPTY) 1512 continue; 1513 regp = (struct si_reg *)sc->sc_maddr; 1514 1515 /* 1516 * See if there has been a pending interrupt for 2 seconds 1517 * or so. The test (int_scounter >= 200) won't correspond 1518 * to 2 seconds if int_count gets changed. 1519 */ 1520 if (regp->int_pending != 0) { 1521 if (regp->int_scounter >= 200 && 1522 regp->initstat == 1) { 1523 printf("si%d: lost intr\n", i); 1524 lost++; 1525 } 1526 } else { 1527 regp->int_scounter = 0; 1528 } 1529 1530 /* 1531 * gripe about no input flow control.. 1532 */ 1533 pp = sc->sc_ports; 1534 for (port = 0; port < sc->sc_nport; pp++, port++) { 1535 if (pp->sp_delta_overflows > 0) { 1536 printf("si%d: %d tty level buffer overflows\n", 1537 i, pp->sp_delta_overflows); 1538 pp->sp_delta_overflows = 0; 1539 } 1540 } 1541 } 1542 if (lost || si_realpoll) 1543 si_intr(NULL); /* call intr with fake vector */ 1544out: 1545 splx(oldspl); 1546 1547 timeout(si_poll, (caddr_t)0L, si_pollrate); 1548} 1549#endif /* ifdef POLL */ 1550 1551/* 1552 * The interrupt handler polls ALL ports on ALL adapters each time 1553 * it is called. 1554 */ 1555 1556static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1557static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1558 1559void 1560si_intr(void *arg) 1561{ 1562 struct si_softc *sc; 1563 struct si_port *pp; 1564 volatile struct si_channel *ccbp; 1565 struct tty *tp; 1566 volatile caddr_t maddr; 1567 BYTE op, ip; 1568 int x, card, port, n, i, isopen; 1569 volatile BYTE *z; 1570 BYTE c; 1571 1572 sc = arg; 1573 1574 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1575 if (in_intr) 1576 return; 1577 in_intr = 1; 1578 1579 /* 1580 * When we get an int we poll all the channels and do ALL pending 1581 * work, not just the first one we find. This allows all cards to 1582 * share the same vector. 1583 * 1584 * XXX - But if we're sharing the vector with something that's NOT 1585 * a SI/XIO/SX card, we may be making more work for ourselves. 1586 */ 1587 for (card = 0; card < si_numunits; card++) { 1588 sc = devclass_get_softc(si_devclass, card); 1589 if (sc == NULL || sc->sc_type == SIEMPTY) 1590 continue; 1591 1592 /* 1593 * First, clear the interrupt 1594 */ 1595 switch(sc->sc_type) { 1596 case SIHOST: 1597 maddr = sc->sc_maddr; 1598 ((volatile struct si_reg *)maddr)->int_pending = 0; 1599 /* flag nothing pending */ 1600 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1601 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1602 break; 1603 case SIHOST2: 1604 maddr = sc->sc_maddr; 1605 ((volatile struct si_reg *)maddr)->int_pending = 0; 1606 *(maddr+SIPLIRQCLR) = 0x00; 1607 *(maddr+SIPLIRQCLR) = 0x10; 1608 break; 1609 case SIPCI: 1610 maddr = sc->sc_maddr; 1611 ((volatile struct si_reg *)maddr)->int_pending = 0; 1612 *(maddr+SIPCIINTCL) = 0x0; 1613 break; 1614 case SIJETPCI: /* fall through to JETISA case */ 1615 case SIJETISA: 1616 maddr = sc->sc_maddr; 1617 ((volatile struct si_reg *)maddr)->int_pending = 0; 1618 *(maddr+SIJETINTCL) = 0x0; 1619 break; 1620 case SIEISA: 1621 maddr = sc->sc_maddr; 1622 ((volatile struct si_reg *)maddr)->int_pending = 0; 1623 (void)inb(sc->sc_iobase + 3); 1624 break; 1625 case SIEMPTY: 1626 default: 1627 continue; 1628 } 1629 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1630 1631 /* 1632 * check each port 1633 */ 1634 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1635 pp++, port++) { 1636 ccbp = pp->sp_ccb; 1637 tp = pp->sp_tty; 1638 1639 /* 1640 * See if a command has completed ? 1641 */ 1642 if (ccbp->hi_stat != pp->sp_pend) { 1643 DPRINT((pp, DBG_INTR, 1644 "si_intr hi_stat = 0x%x, pend = %d\n", 1645 ccbp->hi_stat, pp->sp_pend)); 1646 switch(pp->sp_pend) { 1647 case LOPEN: 1648 case MPEND: 1649 case MOPEN: 1650 case CONFIG: 1651 case SBREAK: 1652 case EBREAK: 1653 pp->sp_pend = ccbp->hi_stat; 1654 /* sleeping in si_command */ 1655 wakeup(&pp->sp_state); 1656 break; 1657 default: 1658 pp->sp_pend = ccbp->hi_stat; 1659 } 1660 } 1661 1662 /* 1663 * Continue on if it's closed 1664 */ 1665 if (ccbp->hi_stat == IDLE_CLOSE) { 1666 continue; 1667 } 1668 1669 /* 1670 * Do modem state change if not a local device 1671 */ 1672 si_modem_state(pp, tp, ccbp->hi_ip); 1673 1674 /* 1675 * Check to see if we should 'receive' characters. 1676 */ 1677 if (tp->t_state & TS_CONNECTED && 1678 tp->t_state & TS_ISOPEN) 1679 isopen = 1; 1680 else 1681 isopen = 0; 1682 1683 /* 1684 * Do input break processing 1685 */ 1686 if (ccbp->hi_state & ST_BREAK) { 1687 if (isopen) { 1688 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1689 } 1690 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1691 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1692 } 1693 1694 /* 1695 * Do RX stuff - if not open then dump any characters. 1696 * XXX: This is VERY messy and needs to be cleaned up. 1697 * 1698 * XXX: can we leave data in the host adapter buffer 1699 * when the clists are full? That may be dangerous 1700 * if the user cannot get an interrupt signal through. 1701 */ 1702 1703 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1704 1705 if (!isopen) { 1706 ccbp->hi_rxopos = ccbp->hi_rxipos; 1707 goto end_rx; 1708 } 1709 1710 /* 1711 * If the tty input buffers are blocked, stop emptying 1712 * the incoming buffers and let the auto flow control 1713 * assert.. 1714 */ 1715 if (tp->t_state & TS_TBLOCK) { 1716 goto end_rx; 1717 } 1718 1719 /* 1720 * Process read characters if not skipped above 1721 */ 1722 op = ccbp->hi_rxopos; 1723 ip = ccbp->hi_rxipos; 1724 c = ip - op; 1725 if (c == 0) { 1726 goto end_rx; 1727 } 1728 1729 n = c & 0xff; 1730 if (n > 250) 1731 n = 250; 1732 1733 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1734 n, op, ip)); 1735 1736 /* 1737 * Suck characters out of host card buffer into the 1738 * "input staging buffer" - so that we dont leave the 1739 * host card in limbo while we're possibly echoing 1740 * characters and possibly flushing input inside the 1741 * ldisc l_rint() routine. 1742 */ 1743 if (n <= SI_BUFFERSIZE - op) { 1744 1745 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1746 z = ccbp->hi_rxbuf + op; 1747 si_vbcopy(z, si_rxbuf, n); 1748 1749 op += n; 1750 } else { 1751 x = SI_BUFFERSIZE - op; 1752 1753 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1754 z = ccbp->hi_rxbuf + op; 1755 si_vbcopy(z, si_rxbuf, x); 1756 1757 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1758 n - x)); 1759 z = ccbp->hi_rxbuf; 1760 si_vbcopy(z, si_rxbuf + x, n - x); 1761 1762 op += n; 1763 } 1764 1765 /* clear collected characters from buffer */ 1766 ccbp->hi_rxopos = op; 1767 1768 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1769 n, op, ip)); 1770 1771 /* 1772 * at this point... 1773 * n = number of chars placed in si_rxbuf 1774 */ 1775 1776 /* 1777 * Avoid the grotesquely inefficient lineswitch 1778 * routine (ttyinput) in "raw" mode. It usually 1779 * takes about 450 instructions (that's without 1780 * canonical processing or echo!). slinput is 1781 * reasonably fast (usually 40 instructions 1782 * plus call overhead). 1783 */ 1784 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1785 1786 /* block if the driver supports it */ 1787 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1788 (tp->t_cflag & CRTS_IFLOW || 1789 tp->t_iflag & IXOFF) && 1790 !(tp->t_state & TS_TBLOCK)) 1791 ttyblock(tp); 1792 1793 tk_nin += n; 1794 tk_rawcc += n; 1795 tp->t_rawcc += n; 1796 1797 pp->sp_delta_overflows += 1798 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1799 1800 ttwakeup(tp); 1801 if (tp->t_state & TS_TTSTOP && 1802 (tp->t_iflag & IXANY || 1803 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1804 tp->t_state &= ~TS_TTSTOP; 1805 tp->t_lflag &= ~FLUSHO; 1806 si_start(tp); 1807 } 1808 } else { 1809 /* 1810 * It'd be nice to not have to go through the 1811 * function call overhead for each char here. 1812 * It'd be nice to block input it, saving a 1813 * loop here and the call/return overhead. 1814 */ 1815 for(x = 0; x < n; x++) { 1816 i = si_rxbuf[x]; 1817 if ((*linesw[tp->t_line].l_rint)(i, tp) 1818 == -1) { 1819 pp->sp_delta_overflows++; 1820 } 1821 } 1822 } 1823 goto more_rx; /* try for more until RXbuf is empty */ 1824 1825 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1826 1827 /* 1828 * Do TX stuff 1829 */ 1830 (*linesw[tp->t_line].l_start)(tp); 1831 1832 } /* end of for (all ports on this controller) */ 1833 } /* end of for (all controllers) */ 1834 1835 in_intr = 0; 1836 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1837} 1838 1839/* 1840 * Nudge the transmitter... 1841 * 1842 * XXX: I inherited some funny code here. It implies the host card only 1843 * interrupts when the transmit buffer reaches the low-water-mark, and does 1844 * not interrupt when it's actually hits empty. In some cases, we have 1845 * processes waiting for complete drain, and we need to simulate an interrupt 1846 * about when we think the buffer is going to be empty (and retry if not). 1847 * I really am not certain about this... I *need* the hardware manuals. 1848 */ 1849static void 1850si_start(struct tty *tp) 1851{ 1852 struct si_port *pp; 1853 volatile struct si_channel *ccbp; 1854 struct clist *qp; 1855 BYTE ipos; 1856 int nchar; 1857 int oldspl, count, n, amount, buffer_full; 1858 1859 oldspl = spltty(); 1860 1861 qp = &tp->t_outq; 1862 pp = TP2PP(tp); 1863 1864 DPRINT((pp, DBG_ENTRY|DBG_START, 1865 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1866 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1867 1868 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1869 goto out; 1870 1871 buffer_full = 0; 1872 ccbp = pp->sp_ccb; 1873 1874 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1875 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1876 1877 while ((nchar = qp->c_cc) > 0) { 1878 if ((BYTE)count >= 255) { 1879 buffer_full++; 1880 break; 1881 } 1882 amount = min(nchar, (255 - (BYTE)count)); 1883 ipos = (unsigned int)ccbp->hi_txipos; 1884 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1885 /* will it fit in one lump? */ 1886 if ((SI_BUFFERSIZE - ipos) >= n) { 1887 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1888 } else { 1889 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1890 SI_BUFFERSIZE - ipos); 1891 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1892 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1893 } 1894 ccbp->hi_txipos += n; 1895 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1896 } 1897 1898 if (count != 0 && nchar == 0) { 1899 tp->t_state |= TS_BUSY; 1900 } else { 1901 tp->t_state &= ~TS_BUSY; 1902 } 1903 1904 /* wakeup time? */ 1905 ttwwakeup(tp); 1906 1907 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1908 (BYTE)count, nchar, tp->t_state)); 1909 1910 if (tp->t_state & TS_BUSY) 1911 { 1912 int time; 1913 1914 time = ttspeedtab(tp->t_ospeed, chartimes); 1915 1916 if (time > 0) { 1917 if (time < nchar) 1918 time = nchar / time; 1919 else 1920 time = 2; 1921 } else { 1922 DPRINT((pp, DBG_START, 1923 "bad char time value! %d\n", time)); 1924 time = hz/10; 1925 } 1926 1927 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1928 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1929 } else { 1930 pp->sp_state |= SS_LSTART; 1931 } 1932 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1933 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1934 } 1935 1936out: 1937 splx(oldspl); 1938 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1939} 1940 1941/* 1942 * Note: called at splsoftclock from the timeout code 1943 * This has to deal with two things... cause wakeups while waiting for 1944 * tty drains on last process exit, and call l_start at about the right 1945 * time for protocols like ppp. 1946 */ 1947static void 1948si_lstart(void *arg) 1949{ 1950 struct si_port *pp = arg; 1951 struct tty *tp; 1952 int oldspl; 1953 1954 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1955 pp, pp->sp_state)); 1956 1957 oldspl = spltty(); 1958 1959 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1960 splx(oldspl); 1961 return; 1962 } 1963 pp->sp_state &= ~SS_LSTART; 1964 pp->sp_state |= SS_INLSTART; 1965 1966 tp = pp->sp_tty; 1967 1968 /* deal with the process exit case */ 1969 ttwwakeup(tp); 1970 1971 /* nudge protocols - eg: ppp */ 1972 (*linesw[tp->t_line].l_start)(tp); 1973 1974 pp->sp_state &= ~SS_INLSTART; 1975 splx(oldspl); 1976} 1977 1978/* 1979 * Stop output on a line. called at spltty(); 1980 */ 1981static void 1982si_stop(struct tty *tp, int rw) 1983{ 1984 volatile struct si_channel *ccbp; 1985 struct si_port *pp; 1986 1987 pp = TP2PP(tp); 1988 ccbp = pp->sp_ccb; 1989 1990 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 1991 1992 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 1993 if (rw & FWRITE) { 1994 /* what level are we meant to be flushing anyway? */ 1995 if (tp->t_state & TS_BUSY) { 1996 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 1997 tp->t_state &= ~TS_BUSY; 1998 ttwwakeup(tp); /* Bruce???? */ 1999 } 2000 } 2001#if 1 /* XXX: this doesn't work right yet.. */ 2002 /* XXX: this may have been failing because we used to call l_rint() 2003 * while we were looping based on these two counters. Now, we collect 2004 * the data and then loop stuffing it into l_rint(), making this 2005 * useless. Should we cause this to blow away the staging buffer? 2006 */ 2007 if (rw & FREAD) { 2008 ccbp->hi_rxopos = ccbp->hi_rxipos; 2009 } 2010#endif 2011} 2012 2013/* 2014 * Issue a command to the host card CPU. 2015 */ 2016 2017static void 2018si_command(struct si_port *pp, int cmd, int waitflag) 2019{ 2020 int oldspl; 2021 volatile struct si_channel *ccbp = pp->sp_ccb; 2022 int x; 2023 2024 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2025 pp, cmd, waitflag, ccbp->hi_stat)); 2026 2027 oldspl = spltty(); /* Keep others out */ 2028 2029 /* wait until it's finished what it was doing.. */ 2030 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2031 * is turned off. */ 2032 while((x = ccbp->hi_stat) != IDLE_OPEN && 2033 x != IDLE_CLOSE && 2034 x != IDLE_BREAK && 2035 x != cmd) { 2036 if (in_intr) { /* Prevent sleep in intr */ 2037 DPRINT((pp, DBG_PARAM, 2038 "cmd intr collision - completing %d\trequested %d\n", 2039 x, cmd)); 2040 splx(oldspl); 2041 return; 2042 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2043 "sicmd1", 1)) { 2044 splx(oldspl); 2045 return; 2046 } 2047 } 2048 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2049 2050 /* if there was a pending command, cause a state-change wakeup */ 2051 switch(pp->sp_pend) { 2052 case LOPEN: 2053 case MPEND: 2054 case MOPEN: 2055 case CONFIG: 2056 case SBREAK: 2057 case EBREAK: 2058 wakeup(&pp->sp_state); 2059 break; 2060 default: 2061 break; 2062 } 2063 2064 pp->sp_pend = cmd; /* New command pending */ 2065 ccbp->hi_stat = cmd; /* Post it */ 2066 2067 if (waitflag) { 2068 if (in_intr) { /* If in interrupt handler */ 2069 DPRINT((pp, DBG_PARAM, 2070 "attempt to sleep in si_intr - cmd req %d\n", 2071 cmd)); 2072 splx(oldspl); 2073 return; 2074 } else while(ccbp->hi_stat != IDLE_OPEN && 2075 ccbp->hi_stat != IDLE_BREAK) { 2076 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2077 "sicmd2", 0)) 2078 break; 2079 } 2080 } 2081 splx(oldspl); 2082} 2083 2084static void 2085si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2086{ 2087 /* 2088 * XXX can skip a lot more cases if Smarts. Maybe 2089 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2090 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2091 */ 2092 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2093 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2094 (!(t->c_iflag & PARMRK) || 2095 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2096 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2097 linesw[tp->t_line].l_rint == ttyinput) 2098 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2099 else 2100 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2101 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2102 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2103 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2104 pp->sp_hotchar)); 2105} 2106 2107 2108#ifdef SI_DEBUG 2109 2110void 2111si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2112{ 2113 va_list ap; 2114 2115 if ((pp == NULL && (si_debug&flags)) || 2116 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2117 if (pp != NULL) 2118 printf("%ci%d(%d): ", 's', 2119 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2120 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2121 va_start(ap, fmt); 2122 vprintf(fmt, ap); 2123 va_end(ap); 2124 } 2125} 2126 2127static char * 2128si_mctl2str(enum si_mctl cmd) 2129{ 2130 switch (cmd) { 2131 case GET: 2132 return("GET"); 2133 case SET: 2134 return("SET"); 2135 case BIS: 2136 return("BIS"); 2137 case BIC: 2138 return("BIC"); 2139 } 2140 return("BAD"); 2141} 2142 2143#endif /* DEBUG */ 2144 2145static char * 2146si_modulename(int host_type, int uart_type) 2147{ 2148 switch (host_type) { 2149 /* Z280 based cards */ 2150 case SIEISA: 2151 case SIHOST2: 2152 case SIHOST: 2153 case SIPCI: 2154 switch (uart_type) { 2155 case 0: 2156 return(" (XIO)"); 2157 case 1: 2158 return(" (SI)"); 2159 } 2160 break; 2161 /* T225 based hosts */ 2162 case SIJETPCI: 2163 case SIJETISA: 2164 switch (uart_type) { 2165 case 0: 2166 return(" (SI)"); 2167 case 40: 2168 return(" (XIO)"); 2169 case 72: 2170 return(" (SXDC)"); 2171 } 2172 break; 2173 } 2174 return(""); 2175} 2176