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