si.c revision 69781
1/* 2 * Device driver for Specialix range (SI/XIO) of serial line multiplexors. 3 * 4 * Copyright (C) 1990, 1992, 1998 Specialix International, 5 * Copyright (C) 1993, Andy Rutter <andy@acronym.co.uk> 6 * Copyright (C) 2000, Peter Wemm <peter@netplex.com.au> 7 * 8 * Originally derived from: SunOS 4.x version 9 * Ported from BSDI version to FreeBSD by Peter Wemm. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notices, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notices, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by Andy Rutter of 22 * Advanced Methods and Tools Ltd. based on original information 23 * from Specialix International. 24 * 4. Neither the name of Advanced Methods and Tools, nor Specialix 25 * International may be used to endorse or promote products derived from 26 * this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY ``AS IS'' AND ANY EXPRESS OR IMPLIED 29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 30 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 31 * NO EVENT SHALL THE AUTHORS BE LIABLE. 32 * 33 * $FreeBSD: head/sys/dev/si/si.c 69781 2000-12-08 21:51:06Z dwmalone $ 34 */ 35 36#ifndef lint 37static const char si_copyright1[] = "@(#) Copyright (C) Specialix International, 1990,1992,1998", 38 si_copyright2[] = "@(#) Copyright (C) Andy Rutter 1993", 39 si_copyright3[] = "@(#) Copyright (C) Peter Wemm 2000"; 40#endif /* not lint */ 41 42#include "opt_compat.h" 43#include "opt_debug_si.h" 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#if defined(COMPAT_43) || defined(COMPAT_SUNOS) 48#include <sys/ioctl_compat.h> 49#endif 50#include <sys/tty.h> 51#include <sys/conf.h> 52#include <sys/fcntl.h> 53#include <sys/dkstat.h> 54#include <sys/kernel.h> 55#include <sys/malloc.h> 56#include <sys/sysctl.h> 57#include <sys/bus.h> 58#include <machine/bus.h> 59#include <sys/rman.h> 60#include <machine/resource.h> 61 62 63#include <vm/vm.h> 64#include <vm/pmap.h> 65 66#include <machine/stdarg.h> 67 68#include <dev/si/sireg.h> 69#include <dev/si/sivar.h> 70#include <dev/si/si.h> 71 72/* 73 * This device driver is designed to interface the Specialix International 74 * SI, XIO and SX range of serial multiplexor cards to FreeBSD on an ISA, 75 * EISA or PCI bus machine. 76 * 77 * The controller is interfaced to the host via dual port RAM 78 * and an interrupt. 79 * 80 * The code for the Host 1 (very old ISA cards) has not been tested. 81 */ 82 83#define POLL /* turn on poller to scan for lost interrupts */ 84#define REALPOLL /* on each poll, scan for work regardless */ 85#define POLLHZ (hz/10) /* 10 times per second */ 86#define SI_I_HIGH_WATER (TTYHOG - 2 * SI_BUFFERSIZE) 87#define INT_COUNT 25000 /* max of 125 ints per second */ 88#define JET_INT_COUNT 100 /* max of 100 ints per second */ 89#define RXINT_COUNT 1 /* one rxint per 10 milliseconds */ 90 91enum si_mctl { GET, SET, BIS, BIC }; 92 93static void si_command(struct si_port *, int, int); 94static int si_modem(struct si_port *, enum si_mctl, int); 95static void si_write_enable(struct si_port *, int); 96static int si_Sioctl(dev_t, u_long, caddr_t, int, struct proc *); 97static void si_start(struct tty *); 98static void si_stop(struct tty *, int); 99static timeout_t si_lstart; 100static void si_disc_optim(struct tty *tp, struct termios *t,struct si_port *pp); 101static void sihardclose(struct si_port *pp); 102static void sidtrwakeup(void *chan); 103 104#ifdef SI_DEBUG 105static char *si_mctl2str(enum si_mctl cmd); 106#endif 107 108static int siparam(struct tty *, struct termios *); 109 110static void si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip); 111static char * si_modulename(int host_type, int uart_type); 112 113static d_open_t siopen; 114static d_close_t siclose; 115static d_write_t siwrite; 116static d_ioctl_t siioctl; 117 118#define CDEV_MAJOR 68 119static struct cdevsw si_cdevsw = { 120 /* open */ siopen, 121 /* close */ siclose, 122 /* read */ ttyread, 123 /* write */ siwrite, 124 /* ioctl */ siioctl, 125 /* poll */ ttypoll, 126 /* mmap */ nommap, 127 /* strategy */ nostrategy, 128 /* name */ "si", 129 /* maj */ CDEV_MAJOR, 130 /* dump */ nodump, 131 /* psize */ nopsize, 132 /* flags */ D_TTY, 133 /* bmaj */ -1 134}; 135 136static int si_Nports; 137static int si_Nmodules; 138static int si_debug = 0; /* data, not bss, so it's patchable */ 139 140SYSCTL_INT(_machdep, OID_AUTO, si_debug, CTLFLAG_RW, &si_debug, 0, ""); 141 142static struct tty *si__tty; 143 144static int si_numunits; 145 146devclass_t si_devclass; 147 148#ifndef B2000 /* not standard, but the hardware knows it. */ 149# define B2000 2000 150#endif 151static struct speedtab bdrates[] = { 152 { B75, CLK75, }, /* 0x0 */ 153 { B110, CLK110, }, /* 0x1 */ 154 { B150, CLK150, }, /* 0x3 */ 155 { B300, CLK300, }, /* 0x4 */ 156 { B600, CLK600, }, /* 0x5 */ 157 { B1200, CLK1200, }, /* 0x6 */ 158 { B2000, CLK2000, }, /* 0x7 */ 159 { B2400, CLK2400, }, /* 0x8 */ 160 { B4800, CLK4800, }, /* 0x9 */ 161 { B9600, CLK9600, }, /* 0xb */ 162 { B19200, CLK19200, }, /* 0xc */ 163 { B38400, CLK38400, }, /* 0x2 (out of order!) */ 164 { B57600, CLK57600, }, /* 0xd */ 165 { B115200, CLK110, }, /* 0x1 (dupe!, 110 baud on "si") */ 166 { -1, -1 }, 167}; 168 169 170/* populated with approx character/sec rates - translated at card 171 * initialisation time to chars per tick of the clock */ 172static int done_chartimes = 0; 173static struct speedtab chartimes[] = { 174 { B75, 8, }, 175 { B110, 11, }, 176 { B150, 15, }, 177 { B300, 30, }, 178 { B600, 60, }, 179 { B1200, 120, }, 180 { B2000, 200, }, 181 { B2400, 240, }, 182 { B4800, 480, }, 183 { B9600, 960, }, 184 { B19200, 1920, }, 185 { B38400, 3840, }, 186 { B57600, 5760, }, 187 { B115200, 11520, }, 188 { -1, -1 }, 189}; 190static volatile int in_intr = 0; /* Inside interrupt handler? */ 191 192#ifdef POLL 193static int si_pollrate; /* in addition to irq */ 194static int si_realpoll = 0; /* poll HW on timer */ 195 196SYSCTL_INT(_machdep, OID_AUTO, si_pollrate, CTLFLAG_RW, &si_pollrate, 0, ""); 197SYSCTL_INT(_machdep, OID_AUTO, si_realpoll, CTLFLAG_RW, &si_realpoll, 0, ""); 198 199static int init_finished = 0; 200static void si_poll(void *); 201#endif 202 203/* 204 * Array of adapter types and the corresponding RAM size. The order of 205 * entries here MUST match the ordinal of the adapter type. 206 */ 207static char *si_type[] = { 208 "EMPTY", 209 "SIHOST", 210 "SIMCA", /* FreeBSD does not support Microchannel */ 211 "SIHOST2", 212 "SIEISA", 213 "SIPCI", 214 "SXPCI", 215 "SXISA", 216}; 217 218/* 219 * We have to make an 8 bit version of bcopy, since some cards can't 220 * deal with 32 bit I/O 221 */ 222static void __inline 223si_bcopy(const void *src, void *dst, size_t len) 224{ 225 while (len--) 226 *(((u_char *)dst)++) = *(((const u_char *)src)++); 227} 228static void __inline 229si_vbcopy(const volatile void *src, void *dst, size_t len) 230{ 231 while (len--) 232 *(((u_char *)dst)++) = *(((const volatile u_char *)src)++); 233} 234static void __inline 235si_bcopyv(const void *src, volatile void *dst, size_t len) 236{ 237 while (len--) 238 *(((volatile u_char *)dst)++) = *(((const u_char *)src)++); 239} 240 241 242/* 243 * Attach the device. Initialize the card. 244 */ 245int 246siattach(device_t dev) 247{ 248 int unit; 249 struct si_softc *sc; 250 struct si_port *pp; 251 volatile struct si_channel *ccbp; 252 volatile struct si_reg *regp; 253 volatile caddr_t maddr; 254 struct si_module *modp; 255 struct tty *tp; 256 struct speedtab *spt; 257 int nmodule, nport, x, y; 258 int uart_type; 259 260 sc = device_get_softc(dev); 261 unit = device_get_unit(dev); 262 263 sc->sc_typename = si_type[sc->sc_type]; 264 if (si_numunits < unit + 1) 265 si_numunits = unit + 1; 266 267 DPRINT((0, DBG_AUTOBOOT, "si%d: siattach\n", unit)); 268 269#ifdef POLL 270 if (si_pollrate == 0) { 271 si_pollrate = POLLHZ; /* in addition to irq */ 272#ifdef REALPOLL 273 si_realpoll = 1; /* scan always */ 274#endif 275 } 276#endif 277 278 DPRINT((0, DBG_AUTOBOOT, "si%d: type: %s paddr: %x maddr: %x\n", unit, 279 sc->sc_typename, sc->sc_paddr, sc->sc_maddr)); 280 281 sc->sc_ports = NULL; /* mark as uninitialised */ 282 283 maddr = sc->sc_maddr; 284 285 /* Stop the CPU first so it won't stomp around while we load */ 286 287 switch (sc->sc_type) { 288 case SIEISA: 289 outb(sc->sc_iobase + 2, sc->sc_irq << 4); 290 break; 291 case SIPCI: 292 *(maddr+SIPCIRESET) = 0; 293 break; 294 case SIJETPCI: /* fall through to JET ISA */ 295 case SIJETISA: 296 *(maddr+SIJETCONFIG) = 0; 297 break; 298 case SIHOST2: 299 *(maddr+SIPLRESET) = 0; 300 break; 301 case SIHOST: 302 *(maddr+SIRESET) = 0; 303 break; 304 default: /* this should never happen */ 305 printf("si%d: unsupported configuration\n", unit); 306 return EINVAL; 307 break; 308 } 309 310 /* OK, now lets download the download code */ 311 312 if (SI_ISJET(sc->sc_type)) { 313 DPRINT((0, DBG_DOWNLOAD, "si%d: jet_download: nbytes %d\n", 314 unit, si3_t225_dsize)); 315 si_bcopy(si3_t225_download, maddr + si3_t225_downloadaddr, 316 si3_t225_dsize); 317 DPRINT((0, DBG_DOWNLOAD, 318 "si%d: jet_bootstrap: nbytes %d -> %x\n", 319 unit, si3_t225_bsize, si3_t225_bootloadaddr)); 320 si_bcopy(si3_t225_bootstrap, maddr + si3_t225_bootloadaddr, 321 si3_t225_bsize); 322 } else { 323 DPRINT((0, DBG_DOWNLOAD, "si%d: si_download: nbytes %d\n", 324 unit, si2_z280_dsize)); 325 si_bcopy(si2_z280_download, maddr + si2_z280_downloadaddr, 326 si2_z280_dsize); 327 } 328 329 /* Now start the CPU */ 330 331 switch (sc->sc_type) { 332 case SIEISA: 333 /* modify the download code to tell it that it's on an EISA */ 334 *(maddr + 0x42) = 1; 335 outb(sc->sc_iobase + 2, (sc->sc_irq << 4) | 4); 336 (void)inb(sc->sc_iobase + 3); /* reset interrupt */ 337 break; 338 case SIPCI: 339 /* modify the download code to tell it that it's on a PCI */ 340 *(maddr+0x42) = 1; 341 *(maddr+SIPCIRESET) = 1; 342 *(maddr+SIPCIINTCL) = 0; 343 break; 344 case SIJETPCI: 345 *(maddr+SIJETRESET) = 0; 346 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN; 347 break; 348 case SIJETISA: 349 *(maddr+SIJETRESET) = 0; 350 switch (sc->sc_irq) { 351 case 9: 352 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0x90; 353 break; 354 case 10: 355 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xa0; 356 break; 357 case 11: 358 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xb0; 359 break; 360 case 12: 361 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xc0; 362 break; 363 case 15: 364 *(maddr+SIJETCONFIG) = SIJETBUSEN|SIJETIRQEN|0xf0; 365 break; 366 } 367 break; 368 case SIHOST: 369 *(maddr+SIRESET_CL) = 0; 370 *(maddr+SIINTCL_CL) = 0; 371 break; 372 case SIHOST2: 373 *(maddr+SIPLRESET) = 0x10; 374 switch (sc->sc_irq) { 375 case 11: 376 *(maddr+SIPLIRQ11) = 0x10; 377 break; 378 case 12: 379 *(maddr+SIPLIRQ12) = 0x10; 380 break; 381 case 15: 382 *(maddr+SIPLIRQ15) = 0x10; 383 break; 384 } 385 *(maddr+SIPLIRQCLR) = 0x10; 386 break; 387 default: /* this should _REALLY_ never happen */ 388 printf("si%d: Uh, it was supported a second ago...\n", unit); 389 return EINVAL; 390 } 391 392 DELAY(1000000); /* wait around for a second */ 393 394 regp = (struct si_reg *)maddr; 395 y = 0; 396 /* wait max of 5 sec for init OK */ 397 while (regp->initstat == 0 && y++ < 10) { 398 DELAY(500000); 399 } 400 switch (regp->initstat) { 401 case 0: 402 printf("si%d: startup timeout - aborting\n", unit); 403 sc->sc_type = SIEMPTY; 404 return EINVAL; 405 case 1: 406 if (SI_ISJET(sc->sc_type)) { 407 /* set throttle to 100 times per second */ 408 regp->int_count = JET_INT_COUNT; 409 /* rx_intr_count is a NOP in Jet */ 410 } else { 411 /* set throttle to 125 times per second */ 412 regp->int_count = INT_COUNT; 413 /* rx intr max of 25 times per second */ 414 regp->rx_int_count = RXINT_COUNT; 415 } 416 regp->int_pending = 0; /* no intr pending */ 417 regp->int_scounter = 0; /* reset counter */ 418 break; 419 case 0xff: 420 /* 421 * No modules found, so give up on this one. 422 */ 423 printf("si%d: %s - no ports found\n", unit, 424 si_type[sc->sc_type]); 425 return 0; 426 default: 427 printf("si%d: download code version error - initstat %x\n", 428 unit, regp->initstat); 429 return EINVAL; 430 } 431 432 /* 433 * First time around the ports just count them in order 434 * to allocate some memory. 435 */ 436 nport = 0; 437 modp = (struct si_module *)(maddr + 0x80); 438 for (;;) { 439 DPRINT((0, DBG_DOWNLOAD, "si%d: ccb addr 0x%x\n", unit, modp)); 440 switch (modp->sm_type) { 441 case TA4: 442 DPRINT((0, DBG_DOWNLOAD, 443 "si%d: Found old TA4 module, 4 ports\n", 444 unit)); 445 x = 4; 446 break; 447 case TA8: 448 DPRINT((0, DBG_DOWNLOAD, 449 "si%d: Found old TA8 module, 8 ports\n", 450 unit)); 451 x = 8; 452 break; 453 case TA4_ASIC: 454 DPRINT((0, DBG_DOWNLOAD, 455 "si%d: Found ASIC TA4 module, 4 ports\n", 456 unit)); 457 x = 4; 458 break; 459 case TA8_ASIC: 460 DPRINT((0, DBG_DOWNLOAD, 461 "si%d: Found ASIC TA8 module, 8 ports\n", 462 unit)); 463 x = 8; 464 break; 465 case MTA: 466 DPRINT((0, DBG_DOWNLOAD, 467 "si%d: Found CD1400 module, 8 ports\n", 468 unit)); 469 x = 8; 470 break; 471 case SXDC: 472 DPRINT((0, DBG_DOWNLOAD, 473 "si%d: Found SXDC module, 8 ports\n", 474 unit)); 475 x = 8; 476 break; 477 default: 478 printf("si%d: unknown module type %d\n", 479 unit, modp->sm_type); 480 goto try_next; 481 } 482 483 /* this was limited in firmware and is also a driver issue */ 484 if ((nport + x) > SI_MAXPORTPERCARD) { 485 printf("si%d: extra ports ignored\n", unit); 486 goto try_next; 487 } 488 489 nport += x; 490 si_Nports += x; 491 si_Nmodules++; 492 493try_next: 494 if (modp->sm_next == 0) 495 break; 496 modp = (struct si_module *) 497 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 498 } 499 sc->sc_ports = (struct si_port *)malloc(sizeof(struct si_port) * nport, 500 M_DEVBUF, M_NOWAIT | M_ZERO); 501 if (sc->sc_ports == 0) { 502mem_fail: 503 printf("si%d: fail to malloc memory for port structs\n", 504 unit); 505 return EINVAL; 506 } 507 sc->sc_nport = nport; 508 509 /* 510 * allocate tty structures for ports 511 */ 512 tp = (struct tty *)malloc(sizeof(*tp) * nport, M_DEVBUF, 513 M_NOWAIT | M_ZERO); 514 if (tp == 0) 515 goto mem_fail; 516 si__tty = tp; 517 518 /* 519 * Scan round the ports again, this time initialising. 520 */ 521 pp = sc->sc_ports; 522 nmodule = 0; 523 modp = (struct si_module *)(maddr + 0x80); 524 uart_type = 1000; /* arbitary, > uchar_max */ 525 for (;;) { 526 switch (modp->sm_type) { 527 case TA4: 528 nport = 4; 529 break; 530 case TA8: 531 nport = 8; 532 break; 533 case TA4_ASIC: 534 nport = 4; 535 break; 536 case TA8_ASIC: 537 nport = 8; 538 break; 539 case MTA: 540 nport = 8; 541 break; 542 case SXDC: 543 nport = 8; 544 break; 545 default: 546 goto try_next2; 547 } 548 nmodule++; 549 ccbp = (struct si_channel *)((char *)modp + 0x100); 550 if (uart_type == 1000) 551 uart_type = ccbp->type; 552 else if (uart_type != ccbp->type) 553 printf("si%d: Warning: module %d mismatch! (%d%s != %d%s)\n", 554 unit, nmodule, 555 ccbp->type, si_modulename(sc->sc_type, ccbp->type), 556 uart_type, si_modulename(sc->sc_type, uart_type)); 557 558 for (x = 0; x < nport; x++, pp++, ccbp++) { 559 pp->sp_ccb = ccbp; /* save the address */ 560 pp->sp_tty = tp++; 561 pp->sp_pend = IDLE_CLOSE; 562 pp->sp_state = 0; /* internal flag */ 563 pp->sp_dtr_wait = 3 * hz; 564 pp->sp_iin.c_iflag = TTYDEF_IFLAG; 565 pp->sp_iin.c_oflag = TTYDEF_OFLAG; 566 pp->sp_iin.c_cflag = TTYDEF_CFLAG; 567 pp->sp_iin.c_lflag = TTYDEF_LFLAG; 568 termioschars(&pp->sp_iin); 569 pp->sp_iin.c_ispeed = pp->sp_iin.c_ospeed = 570 TTYDEF_SPEED;; 571 pp->sp_iout = pp->sp_iin; 572 } 573try_next2: 574 if (modp->sm_next == 0) { 575 printf("si%d: card: %s, ports: %d, modules: %d, type: %d%s\n", 576 unit, 577 sc->sc_typename, 578 sc->sc_nport, 579 nmodule, 580 uart_type, 581 si_modulename(sc->sc_type, uart_type)); 582 break; 583 } 584 modp = (struct si_module *) 585 (maddr + (unsigned)(modp->sm_next & 0x7fff)); 586 } 587 if (done_chartimes == 0) { 588 for (spt = chartimes ; spt->sp_speed != -1; spt++) { 589 if ((spt->sp_code /= hz) == 0) 590 spt->sp_code = 1; 591 } 592 done_chartimes = 1; 593 } 594 595/* path name devsw minor type uid gid perm*/ 596 for (x = 0; x < sc->sc_nport; x++) { 597 /* sync with the manuals that start at 1 */ 598 y = x + 1 + unit * (1 << SI_CARDSHIFT); 599 make_dev(&si_cdevsw, x, 0, 0, 0600, "ttyA%02d", y); 600 make_dev(&si_cdevsw, x + 0x00080, 0, 0, 0600, "cuaA%02d", y); 601 make_dev(&si_cdevsw, x + 0x10000, 0, 0, 0600, "ttyiA%02d", y); 602 make_dev(&si_cdevsw, x + 0x10080, 0, 0, 0600, "cuaiA%02d", y); 603 make_dev(&si_cdevsw, x + 0x20000, 0, 0, 0600, "ttylA%02d", y); 604 make_dev(&si_cdevsw, x + 0x20080, 0, 0, 0600, "cualA%02d", y); 605 } 606 make_dev(&si_cdevsw, 0x40000, 0, 0, 0600, "si_control"); 607 return (0); 608} 609 610static int 611siopen(dev_t dev, int flag, int mode, struct proc *p) 612{ 613 int oldspl, error; 614 int card, port; 615 struct si_softc *sc; 616 struct tty *tp; 617 volatile struct si_channel *ccbp; 618 struct si_port *pp; 619 int mynor = minor(dev); 620 621 /* quickly let in /dev/si_control */ 622 if (IS_CONTROLDEV(mynor)) { 623 if ((error = suser(p))) 624 return(error); 625 return(0); 626 } 627 628 card = SI_CARD(mynor); 629 sc = devclass_get_softc(si_devclass, card); 630 if (sc == NULL) 631 return (ENXIO); 632 633 if (sc->sc_type == SIEMPTY) { 634 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: type %s??\n", 635 card, sc->sc_typename)); 636 return(ENXIO); 637 } 638 639 port = SI_PORT(mynor); 640 if (port >= sc->sc_nport) { 641 DPRINT((0, DBG_OPEN|DBG_FAIL, "si%d: nports %d\n", 642 card, sc->sc_nport)); 643 return(ENXIO); 644 } 645 646#ifdef POLL 647 /* 648 * We've now got a device, so start the poller. 649 */ 650 if (init_finished == 0) { 651 timeout(si_poll, (caddr_t)0L, si_pollrate); 652 init_finished = 1; 653 } 654#endif 655 656 /* initial/lock device */ 657 if (IS_STATE(mynor)) { 658 return(0); 659 } 660 661 pp = sc->sc_ports + port; 662 tp = pp->sp_tty; /* the "real" tty */ 663 dev->si_tty = tp; 664 ccbp = pp->sp_ccb; /* Find control block */ 665 DPRINT((pp, DBG_ENTRY|DBG_OPEN, "siopen(%s,%x,%x,%x)\n", 666 devtoname(dev), flag, mode, p)); 667 668 oldspl = spltty(); /* Keep others out */ 669 error = 0; 670 671open_top: 672 while (pp->sp_state & SS_DTR_OFF) { 673 error = tsleep(&pp->sp_dtr_wait, TTIPRI|PCATCH, "sidtr", 0); 674 if (error != 0) 675 goto out; 676 } 677 678 if (tp->t_state & TS_ISOPEN) { 679 /* 680 * The device is open, so everything has been initialised. 681 * handle conflicts. 682 */ 683 if (IS_CALLOUT(mynor)) { 684 if (!pp->sp_active_out) { 685 error = EBUSY; 686 goto out; 687 } 688 } else { 689 if (pp->sp_active_out) { 690 if (flag & O_NONBLOCK) { 691 error = EBUSY; 692 goto out; 693 } 694 error = tsleep(&pp->sp_active_out, 695 TTIPRI|PCATCH, "sibi", 0); 696 if (error != 0) 697 goto out; 698 goto open_top; 699 } 700 } 701 if (tp->t_state & TS_XCLUDE && 702 suser(p)) { 703 DPRINT((pp, DBG_OPEN|DBG_FAIL, 704 "already open and EXCLUSIVE set\n")); 705 error = EBUSY; 706 goto out; 707 } 708 } else { 709 /* 710 * The device isn't open, so there are no conflicts. 711 * Initialize it. Avoid sleep... :-) 712 */ 713 DPRINT((pp, DBG_OPEN, "first open\n")); 714 tp->t_oproc = si_start; 715 tp->t_stop = si_stop; 716 tp->t_param = siparam; 717 tp->t_dev = dev; 718 tp->t_termios = mynor & SI_CALLOUT_MASK 719 ? pp->sp_iout : pp->sp_iin; 720 721 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 722 723 ++pp->sp_wopeners; /* in case of sleep in siparam */ 724 725 error = siparam(tp, &tp->t_termios); 726 727 --pp->sp_wopeners; 728 if (error != 0) 729 goto out; 730 /* XXX: we should goto_top if siparam slept */ 731 732 /* set initial DCD state */ 733 pp->sp_last_hi_ip = ccbp->hi_ip; 734 if ((pp->sp_last_hi_ip & IP_DCD) || IS_CALLOUT(mynor)) { 735 (*linesw[tp->t_line].l_modem)(tp, 1); 736 } 737 } 738 739 /* whoops! we beat the close! */ 740 if (pp->sp_state & SS_CLOSING) { 741 /* try and stop it from proceeding to bash the hardware */ 742 pp->sp_state &= ~SS_CLOSING; 743 } 744 745 /* 746 * Wait for DCD if necessary 747 */ 748 if (!(tp->t_state & TS_CARR_ON) && 749 !IS_CALLOUT(mynor) && 750 !(tp->t_cflag & CLOCAL) && 751 !(flag & O_NONBLOCK)) { 752 ++pp->sp_wopeners; 753 DPRINT((pp, DBG_OPEN, "sleeping for carrier\n")); 754 error = tsleep(TSA_CARR_ON(tp), TTIPRI|PCATCH, "sidcd", 0); 755 --pp->sp_wopeners; 756 if (error != 0) 757 goto out; 758 goto open_top; 759 } 760 761 error = (*linesw[tp->t_line].l_open)(dev, tp); 762 si_disc_optim(tp, &tp->t_termios, pp); 763 if (tp->t_state & TS_ISOPEN && IS_CALLOUT(mynor)) 764 pp->sp_active_out = TRUE; 765 766 pp->sp_state |= SS_OPEN; /* made it! */ 767 768out: 769 splx(oldspl); 770 771 DPRINT((pp, DBG_OPEN, "leaving siopen\n")); 772 773 if (!(tp->t_state & TS_ISOPEN) && pp->sp_wopeners == 0) 774 sihardclose(pp); 775 776 return(error); 777} 778 779static int 780siclose(dev_t dev, int flag, int mode, struct proc *p) 781{ 782 struct si_port *pp; 783 struct tty *tp; 784 int oldspl; 785 int error = 0; 786 int mynor = minor(dev); 787 788 if (IS_SPECIAL(mynor)) 789 return(0); 790 791 oldspl = spltty(); 792 793 pp = MINOR2PP(mynor); 794 tp = pp->sp_tty; 795 796 DPRINT((pp, DBG_ENTRY|DBG_CLOSE, "siclose(%s,%x,%x,%x) sp_state:%x\n", 797 devtoname(dev), flag, mode, p, pp->sp_state)); 798 799 /* did we sleep and loose a race? */ 800 if (pp->sp_state & SS_CLOSING) { 801 /* error = ESOMETING? */ 802 goto out; 803 } 804 805 /* begin race detection.. */ 806 pp->sp_state |= SS_CLOSING; 807 808 si_write_enable(pp, 0); /* block writes for ttywait() */ 809 810 /* THIS MAY SLEEP IN TTYWAIT!!! */ 811 (*linesw[tp->t_line].l_close)(tp, flag); 812 813 si_write_enable(pp, 1); 814 815 /* did we sleep and somebody started another open? */ 816 if (!(pp->sp_state & SS_CLOSING)) { 817 /* error = ESOMETING? */ 818 goto out; 819 } 820 /* ok. we are now still on the right track.. nuke the hardware */ 821 822 if (pp->sp_state & SS_LSTART) { 823 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 824 pp->sp_state &= ~SS_LSTART; 825 } 826 827 si_stop(tp, FREAD | FWRITE); 828 829 sihardclose(pp); 830 ttyclose(tp); 831 pp->sp_state &= ~SS_OPEN; 832 833out: 834 DPRINT((pp, DBG_CLOSE|DBG_EXIT, "close done, returning\n")); 835 splx(oldspl); 836 return(error); 837} 838 839static void 840sihardclose(struct si_port *pp) 841{ 842 int oldspl; 843 struct tty *tp; 844 volatile struct si_channel *ccbp; 845 846 oldspl = spltty(); 847 848 tp = pp->sp_tty; 849 ccbp = pp->sp_ccb; /* Find control block */ 850 if (tp->t_cflag & HUPCL || 851 (!pp->sp_active_out && 852 !(ccbp->hi_ip & IP_DCD) && 853 !(pp->sp_iin.c_cflag && CLOCAL)) || 854 !(tp->t_state & TS_ISOPEN)) { 855 856 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 857 (void) si_command(pp, FCLOSE, SI_NOWAIT); 858 859 if (pp->sp_dtr_wait != 0) { 860 timeout(sidtrwakeup, pp, pp->sp_dtr_wait); 861 pp->sp_state |= SS_DTR_OFF; 862 } 863 864 } 865 pp->sp_active_out = FALSE; 866 wakeup((caddr_t)&pp->sp_active_out); 867 wakeup(TSA_CARR_ON(tp)); 868 869 splx(oldspl); 870} 871 872 873/* 874 * called at splsoftclock()... 875 */ 876static void 877sidtrwakeup(void *chan) 878{ 879 struct si_port *pp; 880 int oldspl; 881 882 oldspl = spltty(); 883 884 pp = (struct si_port *)chan; 885 pp->sp_state &= ~SS_DTR_OFF; 886 wakeup(&pp->sp_dtr_wait); 887 888 splx(oldspl); 889} 890 891static int 892siwrite(dev_t dev, struct uio *uio, int flag) 893{ 894 struct si_port *pp; 895 struct tty *tp; 896 int error = 0; 897 int mynor = minor(dev); 898 int oldspl; 899 900 if (IS_SPECIAL(mynor)) { 901 DPRINT((0, DBG_ENTRY|DBG_FAIL|DBG_WRITE, "siwrite(CONTROLDEV!!)\n")); 902 return(ENODEV); 903 } 904 pp = MINOR2PP(mynor); 905 tp = pp->sp_tty; 906 DPRINT((pp, DBG_WRITE, "siwrite(%s,%x,%x)\n", devtoname(dev), uio, flag)); 907 908 oldspl = spltty(); 909 /* 910 * If writes are currently blocked, wait on the "real" tty 911 */ 912 while (pp->sp_state & SS_BLOCKWRITE) { 913 pp->sp_state |= SS_WAITWRITE; 914 DPRINT((pp, DBG_WRITE, "in siwrite, wait for SS_BLOCKWRITE to clear\n")); 915 if ((error = ttysleep(tp, (caddr_t)pp, TTOPRI|PCATCH, 916 "siwrite", tp->t_timeout))) { 917 if (error == EWOULDBLOCK) 918 error = EIO; 919 goto out; 920 } 921 } 922 923 error = (*linesw[tp->t_line].l_write)(tp, uio, flag); 924out: 925 splx(oldspl); 926 return (error); 927} 928 929 930static int 931siioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 932{ 933 struct si_port *pp; 934 struct tty *tp; 935 int error; 936 int mynor = minor(dev); 937 int oldspl; 938 int blocked = 0; 939#if defined(COMPAT_43) 940 u_long oldcmd; 941 struct termios term; 942#endif 943 944 if (IS_SI_IOCTL(cmd)) 945 return(si_Sioctl(dev, cmd, data, flag, p)); 946 947 pp = MINOR2PP(mynor); 948 tp = pp->sp_tty; 949 950 DPRINT((pp, DBG_ENTRY|DBG_IOCTL, "siioctl(%s,%lx,%x,%x)\n", 951 devtoname(dev), cmd, data, flag)); 952 if (IS_STATE(mynor)) { 953 struct termios *ct; 954 955 switch (mynor & SI_STATE_MASK) { 956 case SI_INIT_STATE_MASK: 957 ct = IS_CALLOUT(mynor) ? &pp->sp_iout : &pp->sp_iin; 958 break; 959 case SI_LOCK_STATE_MASK: 960 ct = IS_CALLOUT(mynor) ? &pp->sp_lout : &pp->sp_lin; 961 break; 962 default: 963 return (ENODEV); 964 } 965 switch (cmd) { 966 case TIOCSETA: 967 error = suser(p); 968 if (error != 0) 969 return (error); 970 *ct = *(struct termios *)data; 971 return (0); 972 case TIOCGETA: 973 *(struct termios *)data = *ct; 974 return (0); 975 case TIOCGETD: 976 *(int *)data = TTYDISC; 977 return (0); 978 case TIOCGWINSZ: 979 bzero(data, sizeof(struct winsize)); 980 return (0); 981 default: 982 return (ENOTTY); 983 } 984 } 985 /* 986 * Do the old-style ioctl compat routines... 987 */ 988#if defined(COMPAT_43) 989 term = tp->t_termios; 990 oldcmd = cmd; 991 error = ttsetcompat(tp, &cmd, data, &term); 992 if (error != 0) 993 return (error); 994 if (cmd != oldcmd) 995 data = (caddr_t)&term; 996#endif 997 /* 998 * Do the initial / lock state business 999 */ 1000 if (cmd == TIOCSETA || cmd == TIOCSETAW || cmd == TIOCSETAF) { 1001 int cc; 1002 struct termios *dt = (struct termios *)data; 1003 struct termios *lt = mynor & SI_CALLOUT_MASK 1004 ? &pp->sp_lout : &pp->sp_lin; 1005 1006 dt->c_iflag = (tp->t_iflag & lt->c_iflag) | 1007 (dt->c_iflag & ~lt->c_iflag); 1008 dt->c_oflag = (tp->t_oflag & lt->c_oflag) | 1009 (dt->c_oflag & ~lt->c_oflag); 1010 dt->c_cflag = (tp->t_cflag & lt->c_cflag) | 1011 (dt->c_cflag & ~lt->c_cflag); 1012 dt->c_lflag = (tp->t_lflag & lt->c_lflag) | 1013 (dt->c_lflag & ~lt->c_lflag); 1014 for (cc = 0; cc < NCCS; ++cc) 1015 if (lt->c_cc[cc] != 0) 1016 dt->c_cc[cc] = tp->t_cc[cc]; 1017 if (lt->c_ispeed != 0) 1018 dt->c_ispeed = tp->t_ispeed; 1019 if (lt->c_ospeed != 0) 1020 dt->c_ospeed = tp->t_ospeed; 1021 } 1022 1023 /* 1024 * Block user-level writes to give the ttywait() 1025 * a chance to completely drain for commands 1026 * that require the port to be in a quiescent state. 1027 */ 1028 switch (cmd) { 1029 case TIOCSETAW: 1030 case TIOCSETAF: 1031 case TIOCDRAIN: 1032#ifdef COMPAT_43 1033 case TIOCSETP: 1034#endif 1035 blocked++; /* block writes for ttywait() and siparam() */ 1036 si_write_enable(pp, 0); 1037 } 1038 1039 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 1040 if (error != ENOIOCTL) 1041 goto out; 1042 1043 oldspl = spltty(); 1044 1045 error = ttioctl(tp, cmd, data, flag); 1046 si_disc_optim(tp, &tp->t_termios, pp); 1047 if (error != ENOIOCTL) { 1048 splx(oldspl); 1049 goto out; 1050 } 1051 1052 error = 0; 1053 switch (cmd) { 1054 case TIOCSBRK: 1055 si_command(pp, SBREAK, SI_WAIT); 1056 break; 1057 case TIOCCBRK: 1058 si_command(pp, EBREAK, SI_WAIT); 1059 break; 1060 case TIOCSDTR: 1061 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1062 break; 1063 case TIOCCDTR: 1064 (void) si_modem(pp, SET, 0); 1065 break; 1066 case TIOCMSET: 1067 (void) si_modem(pp, SET, *(int *)data); 1068 break; 1069 case TIOCMBIS: 1070 (void) si_modem(pp, BIS, *(int *)data); 1071 break; 1072 case TIOCMBIC: 1073 (void) si_modem(pp, BIC, *(int *)data); 1074 break; 1075 case TIOCMGET: 1076 *(int *)data = si_modem(pp, GET, 0); 1077 break; 1078 case TIOCMSDTRWAIT: 1079 /* must be root since the wait applies to following logins */ 1080 error = suser(p); 1081 if (error == 0) 1082 pp->sp_dtr_wait = *(int *)data * hz / 100; 1083 break; 1084 case TIOCMGDTRWAIT: 1085 *(int *)data = pp->sp_dtr_wait * 100 / hz; 1086 break; 1087 default: 1088 error = ENOTTY; 1089 } 1090 splx(oldspl); 1091 1092out: 1093 DPRINT((pp, DBG_IOCTL|DBG_EXIT, "siioctl ret %d\n", error)); 1094 if (blocked) 1095 si_write_enable(pp, 1); 1096 return(error); 1097} 1098 1099/* 1100 * Handle the Specialix ioctls. All MUST be called via the CONTROL device 1101 */ 1102static int 1103si_Sioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 1104{ 1105 struct si_softc *xsc; 1106 struct si_port *xpp; 1107 volatile struct si_reg *regp; 1108 struct si_tcsi *dp; 1109 struct si_pstat *sps; 1110 int *ip, error = 0; 1111 int oldspl; 1112 int card, port; 1113 int mynor = minor(dev); 1114 1115 DPRINT((0, DBG_ENTRY|DBG_IOCTL, "si_Sioctl(%s,%lx,%x,%x)\n", 1116 devtoname(dev), cmd, data, flag)); 1117 1118#if 1 1119 DPRINT((0, DBG_IOCTL, "TCSI_PORT=%x\n", TCSI_PORT)); 1120 DPRINT((0, DBG_IOCTL, "TCSI_CCB=%x\n", TCSI_CCB)); 1121 DPRINT((0, DBG_IOCTL, "TCSI_TTY=%x\n", TCSI_TTY)); 1122#endif 1123 1124 if (!IS_CONTROLDEV(mynor)) { 1125 DPRINT((0, DBG_IOCTL|DBG_FAIL, "not called from control device!\n")); 1126 return(ENODEV); 1127 } 1128 1129 oldspl = spltty(); /* better safe than sorry */ 1130 1131 ip = (int *)data; 1132 1133#define SUCHECK if ((error = suser(p))) goto out 1134 1135 switch (cmd) { 1136 case TCSIPORTS: 1137 *ip = si_Nports; 1138 goto out; 1139 case TCSIMODULES: 1140 *ip = si_Nmodules; 1141 goto out; 1142 case TCSISDBG_ALL: 1143 SUCHECK; 1144 si_debug = *ip; 1145 goto out; 1146 case TCSIGDBG_ALL: 1147 *ip = si_debug; 1148 goto out; 1149 default: 1150 /* 1151 * Check that a controller for this port exists 1152 */ 1153 1154 /* may also be a struct si_pstat, a superset of si_tcsi */ 1155 1156 dp = (struct si_tcsi *)data; 1157 sps = (struct si_pstat *)data; 1158 card = dp->tc_card; 1159 xsc = devclass_get_softc(si_devclass, card); /* check.. */ 1160 if (xsc == NULL || xsc->sc_type == SIEMPTY) { 1161 error = ENOENT; 1162 goto out; 1163 } 1164 /* 1165 * And check that a port exists 1166 */ 1167 port = dp->tc_port; 1168 if (port < 0 || port >= xsc->sc_nport) { 1169 error = ENOENT; 1170 goto out; 1171 } 1172 xpp = xsc->sc_ports + port; 1173 regp = (struct si_reg *)xsc->sc_maddr; 1174 } 1175 1176 switch (cmd) { 1177 case TCSIDEBUG: 1178#ifdef SI_DEBUG 1179 SUCHECK; 1180 if (xpp->sp_debug) 1181 xpp->sp_debug = 0; 1182 else { 1183 xpp->sp_debug = DBG_ALL; 1184 DPRINT((xpp, DBG_IOCTL, "debug toggled %s\n", 1185 (xpp->sp_debug&DBG_ALL)?"ON":"OFF")); 1186 } 1187 break; 1188#else 1189 error = ENODEV; 1190 goto out; 1191#endif 1192 case TCSISDBG_LEVEL: 1193 case TCSIGDBG_LEVEL: 1194#ifdef SI_DEBUG 1195 if (cmd == TCSIGDBG_LEVEL) { 1196 dp->tc_dbglvl = xpp->sp_debug; 1197 } else { 1198 SUCHECK; 1199 xpp->sp_debug = dp->tc_dbglvl; 1200 } 1201 break; 1202#else 1203 error = ENODEV; 1204 goto out; 1205#endif 1206 case TCSIGRXIT: 1207 dp->tc_int = regp->rx_int_count; 1208 break; 1209 case TCSIRXIT: 1210 SUCHECK; 1211 regp->rx_int_count = dp->tc_int; 1212 break; 1213 case TCSIGIT: 1214 dp->tc_int = regp->int_count; 1215 break; 1216 case TCSIIT: 1217 SUCHECK; 1218 regp->int_count = dp->tc_int; 1219 break; 1220 case TCSISTATE: 1221 dp->tc_int = xpp->sp_ccb->hi_ip; 1222 break; 1223 /* these next three use a different structure */ 1224 case TCSI_PORT: 1225 SUCHECK; 1226 si_bcopy(xpp, &sps->tc_siport, sizeof(sps->tc_siport)); 1227 break; 1228 case TCSI_CCB: 1229 SUCHECK; 1230 si_vbcopy(xpp->sp_ccb, &sps->tc_ccb, sizeof(sps->tc_ccb)); 1231 break; 1232 case TCSI_TTY: 1233 SUCHECK; 1234 si_bcopy(xpp->sp_tty, &sps->tc_tty, sizeof(sps->tc_tty)); 1235 break; 1236 default: 1237 error = EINVAL; 1238 goto out; 1239 } 1240out: 1241 splx(oldspl); 1242 return(error); /* success */ 1243} 1244 1245/* 1246 * siparam() : Configure line params 1247 * called at spltty(); 1248 * this may sleep, does not flush, nor wait for drain, nor block writes 1249 * caller must arrange this if it's important.. 1250 */ 1251static int 1252siparam(struct tty *tp, struct termios *t) 1253{ 1254 struct si_port *pp = TP2PP(tp); 1255 volatile struct si_channel *ccbp; 1256 int oldspl, cflag, iflag, oflag, lflag; 1257 int error = 0; /* shutup gcc */ 1258 int ispeed = 0; /* shutup gcc */ 1259 int ospeed = 0; /* shutup gcc */ 1260 BYTE val; 1261 1262 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "siparam(%x,%x)\n", tp, t)); 1263 cflag = t->c_cflag; 1264 iflag = t->c_iflag; 1265 oflag = t->c_oflag; 1266 lflag = t->c_lflag; 1267 DPRINT((pp, DBG_PARAM, "OFLAG 0x%x CFLAG 0x%x IFLAG 0x%x LFLAG 0x%x\n", 1268 oflag, cflag, iflag, lflag)); 1269 1270 /* XXX - if Jet host and SXDC module, use extended baud rates */ 1271 1272 /* if not hung up.. */ 1273 if (t->c_ospeed != 0) { 1274 /* translate baud rate to firmware values */ 1275 ospeed = ttspeedtab(t->c_ospeed, bdrates); 1276 ispeed = t->c_ispeed ? 1277 ttspeedtab(t->c_ispeed, bdrates) : ospeed; 1278 1279 /* enforce legit baud rate */ 1280 if (ospeed < 0 || ispeed < 0) 1281 return (EINVAL); 1282 } 1283 1284 oldspl = spltty(); 1285 1286 ccbp = pp->sp_ccb; 1287 1288 /* ========== set hi_break ========== */ 1289 val = 0; 1290 if (iflag & IGNBRK) /* Breaks */ 1291 val |= BR_IGN; 1292 if (iflag & BRKINT) /* Interrupt on break? */ 1293 val |= BR_INT; 1294 if (iflag & PARMRK) /* Parity mark? */ 1295 val |= BR_PARMRK; 1296 if (iflag & IGNPAR) /* Ignore chars with parity errors? */ 1297 val |= BR_PARIGN; 1298 ccbp->hi_break = val; 1299 1300 /* ========== set hi_csr ========== */ 1301 /* if not hung up.. */ 1302 if (t->c_ospeed != 0) { 1303 /* Set I/O speeds */ 1304 val = (ispeed << 4) | ospeed; 1305 } 1306 ccbp->hi_csr = val; 1307 1308 /* ========== set hi_mr2 ========== */ 1309 val = 0; 1310 if (cflag & CSTOPB) /* Stop bits */ 1311 val |= MR2_2_STOP; 1312 else 1313 val |= MR2_1_STOP; 1314 /* 1315 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1316 * a DCE, hence the reverse sense of RTS and CTS 1317 */ 1318 /* Output Flow - RTS must be raised before data can be sent */ 1319 if (cflag & CCTS_OFLOW) 1320 val |= MR2_RTSCONT; 1321 1322 ccbp->hi_mr2 = val; 1323 1324 /* ========== set hi_mr1 ========== */ 1325 val = 0; 1326 if (!(cflag & PARENB)) /* Parity */ 1327 val |= MR1_NONE; 1328 else 1329 val |= MR1_WITH; 1330 if (cflag & PARODD) 1331 val |= MR1_ODD; 1332 1333 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1334 val |= MR1_8_BITS; 1335 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1336 val |= MR1_7_BITS; 1337 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1338 val |= MR1_6_BITS; 1339 } else { /* Must be 5 */ 1340 val |= MR1_5_BITS; 1341 } 1342 /* 1343 * Enable H/W RTS/CTS handshaking. The default TA/MTA is 1344 * a DCE, hence the reverse sense of RTS and CTS 1345 */ 1346 /* Input Flow - CTS is raised when port is ready to receive data */ 1347 if (cflag & CRTS_IFLOW) 1348 val |= MR1_CTSCONT; 1349 1350 ccbp->hi_mr1 = val; 1351 1352 /* ========== set hi_mask ========== */ 1353 val = 0xff; 1354 if ((cflag & CS8) == CS8) { /* 8 data bits? */ 1355 val &= 0xFF; 1356 } else if ((cflag & CS7) == CS7) { /* 7 data bits? */ 1357 val &= 0x7F; 1358 } else if ((cflag & CS6) == CS6) { /* 6 data bits? */ 1359 val &= 0x3F; 1360 } else { /* Must be 5 */ 1361 val &= 0x1F; 1362 } 1363 if (iflag & ISTRIP) 1364 val &= 0x7F; 1365 1366 ccbp->hi_mask = val; 1367 1368 /* ========== set hi_prtcl ========== */ 1369 val = SP_DCEN; /* Monitor DCD always, or TIOCMGET misses it */ 1370 if (iflag & IXANY) 1371 val |= SP_TANY; 1372 if (iflag & IXON) 1373 val |= SP_TXEN; 1374 if (iflag & IXOFF) 1375 val |= SP_RXEN; 1376 if (iflag & INPCK) 1377 val |= SP_PAEN; 1378 1379 ccbp->hi_prtcl = val; 1380 1381 1382 /* ========== set hi_{rx|tx}{on|off} ========== */ 1383 /* XXX: the card TOTALLY shields us from the flow control... */ 1384 ccbp->hi_txon = t->c_cc[VSTART]; 1385 ccbp->hi_txoff = t->c_cc[VSTOP]; 1386 1387 ccbp->hi_rxon = t->c_cc[VSTART]; 1388 ccbp->hi_rxoff = t->c_cc[VSTOP]; 1389 1390 /* ========== send settings to the card ========== */ 1391 /* potential sleep here */ 1392 if (ccbp->hi_stat == IDLE_CLOSE) /* Not yet open */ 1393 si_command(pp, LOPEN, SI_WAIT); /* open it */ 1394 else 1395 si_command(pp, CONFIG, SI_WAIT); /* change params */ 1396 1397 /* ========== set DTR etc ========== */ 1398 /* Hangup if ospeed == 0 */ 1399 if (t->c_ospeed == 0) { 1400 (void) si_modem(pp, BIC, TIOCM_DTR|TIOCM_RTS); 1401 } else { 1402 /* 1403 * If the previous speed was 0, may need to re-enable 1404 * the modem signals 1405 */ 1406 (void) si_modem(pp, SET, TIOCM_DTR|TIOCM_RTS); 1407 } 1408 1409 DPRINT((pp, DBG_PARAM, "siparam, complete: MR1 %x MR2 %x HI_MASK %x PRTCL %x HI_BREAK %x\n", 1410 ccbp->hi_mr1, ccbp->hi_mr2, ccbp->hi_mask, ccbp->hi_prtcl, ccbp->hi_break)); 1411 1412 splx(oldspl); 1413 return(error); 1414} 1415 1416/* 1417 * Enable or Disable the writes to this channel... 1418 * "state" -> enabled = 1; disabled = 0; 1419 */ 1420static void 1421si_write_enable(struct si_port *pp, int state) 1422{ 1423 int oldspl; 1424 1425 oldspl = spltty(); 1426 1427 if (state) { 1428 pp->sp_state &= ~SS_BLOCKWRITE; 1429 if (pp->sp_state & SS_WAITWRITE) { 1430 pp->sp_state &= ~SS_WAITWRITE; 1431 /* thunder away! */ 1432 wakeup((caddr_t)pp); 1433 } 1434 } else { 1435 pp->sp_state |= SS_BLOCKWRITE; 1436 } 1437 1438 splx(oldspl); 1439} 1440 1441/* 1442 * Set/Get state of modem control lines. 1443 * Due to DCE-like behaviour of the adapter, some signals need translation: 1444 * TIOCM_DTR DSR 1445 * TIOCM_RTS CTS 1446 */ 1447static int 1448si_modem(struct si_port *pp, enum si_mctl cmd, int bits) 1449{ 1450 volatile struct si_channel *ccbp; 1451 int x; 1452 1453 DPRINT((pp, DBG_ENTRY|DBG_MODEM, "si_modem(%x,%s,%x)\n", pp, si_mctl2str(cmd), bits)); 1454 ccbp = pp->sp_ccb; /* Find channel address */ 1455 switch (cmd) { 1456 case GET: 1457 x = ccbp->hi_ip; 1458 bits = TIOCM_LE; 1459 if (x & IP_DCD) bits |= TIOCM_CAR; 1460 if (x & IP_DTR) bits |= TIOCM_DTR; 1461 if (x & IP_RTS) bits |= TIOCM_RTS; 1462 if (x & IP_RI) bits |= TIOCM_RI; 1463 return(bits); 1464 case SET: 1465 ccbp->hi_op &= ~(OP_DSR|OP_CTS); 1466 /* fall through */ 1467 case BIS: 1468 x = 0; 1469 if (bits & TIOCM_DTR) 1470 x |= OP_DSR; 1471 if (bits & TIOCM_RTS) 1472 x |= OP_CTS; 1473 ccbp->hi_op |= x; 1474 break; 1475 case BIC: 1476 if (bits & TIOCM_DTR) 1477 ccbp->hi_op &= ~OP_DSR; 1478 if (bits & TIOCM_RTS) 1479 ccbp->hi_op &= ~OP_CTS; 1480 } 1481 return 0; 1482} 1483 1484/* 1485 * Handle change of modem state 1486 */ 1487static void 1488si_modem_state(struct si_port *pp, struct tty *tp, int hi_ip) 1489{ 1490 /* if a modem dev */ 1491 if (hi_ip & IP_DCD) { 1492 if (!(pp->sp_last_hi_ip & IP_DCD)) { 1493 DPRINT((pp, DBG_INTR, "modem carr on t_line %d\n", 1494 tp->t_line)); 1495 (void)(*linesw[tp->t_line].l_modem)(tp, 1); 1496 } 1497 } else { 1498 if (pp->sp_last_hi_ip & IP_DCD) { 1499 DPRINT((pp, DBG_INTR, "modem carr off\n")); 1500 if ((*linesw[tp->t_line].l_modem)(tp, 0)) 1501 (void) si_modem(pp, SET, 0); 1502 } 1503 } 1504 pp->sp_last_hi_ip = hi_ip; 1505 1506} 1507 1508/* 1509 * Poller to catch missed interrupts. 1510 * 1511 * Note that the SYSV Specialix drivers poll at 100 times per second to get 1512 * better response. We could really use a "periodic" version timeout(). :-) 1513 */ 1514#ifdef POLL 1515static void 1516si_poll(void *nothing) 1517{ 1518 struct si_softc *sc; 1519 int i; 1520 volatile struct si_reg *regp; 1521 struct si_port *pp; 1522 int lost, oldspl, port; 1523 1524 DPRINT((0, DBG_POLL, "si_poll()\n")); 1525 oldspl = spltty(); 1526 if (in_intr) 1527 goto out; 1528 lost = 0; 1529 for (i = 0; i < si_numunits; i++) { 1530 sc = devclass_get_softc(si_devclass, i); 1531 if (sc == NULL || sc->sc_type == SIEMPTY) 1532 continue; 1533 regp = (struct si_reg *)sc->sc_maddr; 1534 1535 /* 1536 * See if there has been a pending interrupt for 2 seconds 1537 * or so. The test (int_scounter >= 200) won't correspond 1538 * to 2 seconds if int_count gets changed. 1539 */ 1540 if (regp->int_pending != 0) { 1541 if (regp->int_scounter >= 200 && 1542 regp->initstat == 1) { 1543 printf("si%d: lost intr\n", i); 1544 lost++; 1545 } 1546 } else { 1547 regp->int_scounter = 0; 1548 } 1549 1550 /* 1551 * gripe about no input flow control.. 1552 */ 1553 pp = sc->sc_ports; 1554 for (port = 0; port < sc->sc_nport; pp++, port++) { 1555 if (pp->sp_delta_overflows > 0) { 1556 printf("si%d: %d tty level buffer overflows\n", 1557 i, pp->sp_delta_overflows); 1558 pp->sp_delta_overflows = 0; 1559 } 1560 } 1561 } 1562 if (lost || si_realpoll) 1563 si_intr(NULL); /* call intr with fake vector */ 1564out: 1565 splx(oldspl); 1566 1567 timeout(si_poll, (caddr_t)0L, si_pollrate); 1568} 1569#endif /* ifdef POLL */ 1570 1571/* 1572 * The interrupt handler polls ALL ports on ALL adapters each time 1573 * it is called. 1574 */ 1575 1576static BYTE si_rxbuf[SI_BUFFERSIZE]; /* input staging area */ 1577static BYTE si_txbuf[SI_BUFFERSIZE]; /* output staging area */ 1578 1579void 1580si_intr(void *arg) 1581{ 1582 struct si_softc *sc; 1583 struct si_port *pp; 1584 volatile struct si_channel *ccbp; 1585 struct tty *tp; 1586 volatile caddr_t maddr; 1587 BYTE op, ip; 1588 int x, card, port, n, i, isopen; 1589 volatile BYTE *z; 1590 BYTE c; 1591 1592 sc = arg; 1593 1594 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "si_intr\n")); 1595 if (in_intr) 1596 return; 1597 in_intr = 1; 1598 1599 /* 1600 * When we get an int we poll all the channels and do ALL pending 1601 * work, not just the first one we find. This allows all cards to 1602 * share the same vector. 1603 * 1604 * XXX - But if we're sharing the vector with something that's NOT 1605 * a SI/XIO/SX card, we may be making more work for ourselves. 1606 */ 1607 for (card = 0; card < si_numunits; card++) { 1608 sc = devclass_get_softc(si_devclass, card); 1609 if (sc == NULL || sc->sc_type == SIEMPTY) 1610 continue; 1611 1612 /* 1613 * First, clear the interrupt 1614 */ 1615 switch(sc->sc_type) { 1616 case SIHOST: 1617 maddr = sc->sc_maddr; 1618 ((volatile struct si_reg *)maddr)->int_pending = 0; 1619 /* flag nothing pending */ 1620 *(maddr+SIINTCL) = 0x00; /* Set IRQ clear */ 1621 *(maddr+SIINTCL_CL) = 0x00; /* Clear IRQ clear */ 1622 break; 1623 case SIHOST2: 1624 maddr = sc->sc_maddr; 1625 ((volatile struct si_reg *)maddr)->int_pending = 0; 1626 *(maddr+SIPLIRQCLR) = 0x00; 1627 *(maddr+SIPLIRQCLR) = 0x10; 1628 break; 1629 case SIPCI: 1630 maddr = sc->sc_maddr; 1631 ((volatile struct si_reg *)maddr)->int_pending = 0; 1632 *(maddr+SIPCIINTCL) = 0x0; 1633 break; 1634 case SIJETPCI: /* fall through to JETISA case */ 1635 case SIJETISA: 1636 maddr = sc->sc_maddr; 1637 ((volatile struct si_reg *)maddr)->int_pending = 0; 1638 *(maddr+SIJETINTCL) = 0x0; 1639 break; 1640 case SIEISA: 1641 maddr = sc->sc_maddr; 1642 ((volatile struct si_reg *)maddr)->int_pending = 0; 1643 (void)inb(sc->sc_iobase + 3); 1644 break; 1645 case SIEMPTY: 1646 default: 1647 continue; 1648 } 1649 ((volatile struct si_reg *)maddr)->int_scounter = 0; 1650 1651 /* 1652 * check each port 1653 */ 1654 for (pp = sc->sc_ports, port = 0; port < sc->sc_nport; 1655 pp++, port++) { 1656 ccbp = pp->sp_ccb; 1657 tp = pp->sp_tty; 1658 1659 /* 1660 * See if a command has completed ? 1661 */ 1662 if (ccbp->hi_stat != pp->sp_pend) { 1663 DPRINT((pp, DBG_INTR, 1664 "si_intr hi_stat = 0x%x, pend = %d\n", 1665 ccbp->hi_stat, pp->sp_pend)); 1666 switch(pp->sp_pend) { 1667 case LOPEN: 1668 case MPEND: 1669 case MOPEN: 1670 case CONFIG: 1671 case SBREAK: 1672 case EBREAK: 1673 pp->sp_pend = ccbp->hi_stat; 1674 /* sleeping in si_command */ 1675 wakeup(&pp->sp_state); 1676 break; 1677 default: 1678 pp->sp_pend = ccbp->hi_stat; 1679 } 1680 } 1681 1682 /* 1683 * Continue on if it's closed 1684 */ 1685 if (ccbp->hi_stat == IDLE_CLOSE) { 1686 continue; 1687 } 1688 1689 /* 1690 * Do modem state change if not a local device 1691 */ 1692 si_modem_state(pp, tp, ccbp->hi_ip); 1693 1694 /* 1695 * Check to see if we should 'receive' characters. 1696 */ 1697 if (tp->t_state & TS_CONNECTED && 1698 tp->t_state & TS_ISOPEN) 1699 isopen = 1; 1700 else 1701 isopen = 0; 1702 1703 /* 1704 * Do input break processing 1705 */ 1706 if (ccbp->hi_state & ST_BREAK) { 1707 if (isopen) { 1708 (*linesw[tp->t_line].l_rint)(TTY_BI, tp); 1709 } 1710 ccbp->hi_state &= ~ST_BREAK; /* A Bit iffy this */ 1711 DPRINT((pp, DBG_INTR, "si_intr break\n")); 1712 } 1713 1714 /* 1715 * Do RX stuff - if not open then dump any characters. 1716 * XXX: This is VERY messy and needs to be cleaned up. 1717 * 1718 * XXX: can we leave data in the host adapter buffer 1719 * when the clists are full? That may be dangerous 1720 * if the user cannot get an interrupt signal through. 1721 */ 1722 1723 more_rx: /* XXX Sorry. the nesting was driving me bats! :-( */ 1724 1725 if (!isopen) { 1726 ccbp->hi_rxopos = ccbp->hi_rxipos; 1727 goto end_rx; 1728 } 1729 1730 /* 1731 * If the tty input buffers are blocked, stop emptying 1732 * the incoming buffers and let the auto flow control 1733 * assert.. 1734 */ 1735 if (tp->t_state & TS_TBLOCK) { 1736 goto end_rx; 1737 } 1738 1739 /* 1740 * Process read characters if not skipped above 1741 */ 1742 op = ccbp->hi_rxopos; 1743 ip = ccbp->hi_rxipos; 1744 c = ip - op; 1745 if (c == 0) { 1746 goto end_rx; 1747 } 1748 1749 n = c & 0xff; 1750 if (n > 250) 1751 n = 250; 1752 1753 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1754 n, op, ip)); 1755 1756 /* 1757 * Suck characters out of host card buffer into the 1758 * "input staging buffer" - so that we dont leave the 1759 * host card in limbo while we're possibly echoing 1760 * characters and possibly flushing input inside the 1761 * ldisc l_rint() routine. 1762 */ 1763 if (n <= SI_BUFFERSIZE - op) { 1764 1765 DPRINT((pp, DBG_INTR, "\tsingle copy\n")); 1766 z = ccbp->hi_rxbuf + op; 1767 si_vbcopy(z, si_rxbuf, n); 1768 1769 op += n; 1770 } else { 1771 x = SI_BUFFERSIZE - op; 1772 1773 DPRINT((pp, DBG_INTR, "\tdouble part 1 %d\n", x)); 1774 z = ccbp->hi_rxbuf + op; 1775 si_vbcopy(z, si_rxbuf, x); 1776 1777 DPRINT((pp, DBG_INTR, "\tdouble part 2 %d\n", 1778 n - x)); 1779 z = ccbp->hi_rxbuf; 1780 si_vbcopy(z, si_rxbuf + x, n - x); 1781 1782 op += n; 1783 } 1784 1785 /* clear collected characters from buffer */ 1786 ccbp->hi_rxopos = op; 1787 1788 DPRINT((pp, DBG_INTR, "n = %d, op = %d, ip = %d\n", 1789 n, op, ip)); 1790 1791 /* 1792 * at this point... 1793 * n = number of chars placed in si_rxbuf 1794 */ 1795 1796 /* 1797 * Avoid the grotesquely inefficient lineswitch 1798 * routine (ttyinput) in "raw" mode. It usually 1799 * takes about 450 instructions (that's without 1800 * canonical processing or echo!). slinput is 1801 * reasonably fast (usually 40 instructions 1802 * plus call overhead). 1803 */ 1804 if (tp->t_state & TS_CAN_BYPASS_L_RINT) { 1805 1806 /* block if the driver supports it */ 1807 if (tp->t_rawq.c_cc + n >= SI_I_HIGH_WATER && 1808 (tp->t_cflag & CRTS_IFLOW || 1809 tp->t_iflag & IXOFF) && 1810 !(tp->t_state & TS_TBLOCK)) 1811 ttyblock(tp); 1812 1813 tk_nin += n; 1814 tk_rawcc += n; 1815 tp->t_rawcc += n; 1816 1817 pp->sp_delta_overflows += 1818 b_to_q((char *)si_rxbuf, n, &tp->t_rawq); 1819 1820 ttwakeup(tp); 1821 if (tp->t_state & TS_TTSTOP && 1822 (tp->t_iflag & IXANY || 1823 tp->t_cc[VSTART] == tp->t_cc[VSTOP])) { 1824 tp->t_state &= ~TS_TTSTOP; 1825 tp->t_lflag &= ~FLUSHO; 1826 si_start(tp); 1827 } 1828 } else { 1829 /* 1830 * It'd be nice to not have to go through the 1831 * function call overhead for each char here. 1832 * It'd be nice to block input it, saving a 1833 * loop here and the call/return overhead. 1834 */ 1835 for(x = 0; x < n; x++) { 1836 i = si_rxbuf[x]; 1837 if ((*linesw[tp->t_line].l_rint)(i, tp) 1838 == -1) { 1839 pp->sp_delta_overflows++; 1840 } 1841 } 1842 } 1843 goto more_rx; /* try for more until RXbuf is empty */ 1844 1845 end_rx: /* XXX: Again, sorry about the gotos.. :-) */ 1846 1847 /* 1848 * Do TX stuff 1849 */ 1850 (*linesw[tp->t_line].l_start)(tp); 1851 1852 } /* end of for (all ports on this controller) */ 1853 } /* end of for (all controllers) */ 1854 1855 in_intr = 0; 1856 DPRINT((0, arg == NULL ? DBG_POLL:DBG_INTR, "end si_intr\n")); 1857} 1858 1859/* 1860 * Nudge the transmitter... 1861 * 1862 * XXX: I inherited some funny code here. It implies the host card only 1863 * interrupts when the transmit buffer reaches the low-water-mark, and does 1864 * not interrupt when it's actually hits empty. In some cases, we have 1865 * processes waiting for complete drain, and we need to simulate an interrupt 1866 * about when we think the buffer is going to be empty (and retry if not). 1867 * I really am not certain about this... I *need* the hardware manuals. 1868 */ 1869static void 1870si_start(struct tty *tp) 1871{ 1872 struct si_port *pp; 1873 volatile struct si_channel *ccbp; 1874 struct clist *qp; 1875 BYTE ipos; 1876 int nchar; 1877 int oldspl, count, n, amount, buffer_full; 1878 1879 oldspl = spltty(); 1880 1881 qp = &tp->t_outq; 1882 pp = TP2PP(tp); 1883 1884 DPRINT((pp, DBG_ENTRY|DBG_START, 1885 "si_start(%x) t_state %x sp_state %x t_outq.c_cc %d\n", 1886 tp, tp->t_state, pp->sp_state, qp->c_cc)); 1887 1888 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 1889 goto out; 1890 1891 buffer_full = 0; 1892 ccbp = pp->sp_ccb; 1893 1894 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1895 DPRINT((pp, DBG_START, "count %d\n", (BYTE)count)); 1896 1897 while ((nchar = qp->c_cc) > 0) { 1898 if ((BYTE)count >= 255) { 1899 buffer_full++; 1900 break; 1901 } 1902 amount = min(nchar, (255 - (BYTE)count)); 1903 ipos = (unsigned int)ccbp->hi_txipos; 1904 n = q_to_b(&tp->t_outq, si_txbuf, amount); 1905 /* will it fit in one lump? */ 1906 if ((SI_BUFFERSIZE - ipos) >= n) { 1907 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], n); 1908 } else { 1909 si_bcopyv(si_txbuf, &ccbp->hi_txbuf[ipos], 1910 SI_BUFFERSIZE - ipos); 1911 si_bcopyv(si_txbuf + (SI_BUFFERSIZE - ipos), 1912 &ccbp->hi_txbuf[0], n - (SI_BUFFERSIZE - ipos)); 1913 } 1914 ccbp->hi_txipos += n; 1915 count = (int)ccbp->hi_txipos - (int)ccbp->hi_txopos; 1916 } 1917 1918 if (count != 0 && nchar == 0) { 1919 tp->t_state |= TS_BUSY; 1920 } else { 1921 tp->t_state &= ~TS_BUSY; 1922 } 1923 1924 /* wakeup time? */ 1925 ttwwakeup(tp); 1926 1927 DPRINT((pp, DBG_START, "count %d, nchar %d, tp->t_state 0x%x\n", 1928 (BYTE)count, nchar, tp->t_state)); 1929 1930 if (tp->t_state & TS_BUSY) 1931 { 1932 int time; 1933 1934 time = ttspeedtab(tp->t_ospeed, chartimes); 1935 1936 if (time > 0) { 1937 if (time < nchar) 1938 time = nchar / time; 1939 else 1940 time = 2; 1941 } else { 1942 DPRINT((pp, DBG_START, 1943 "bad char time value! %d\n", time)); 1944 time = hz/10; 1945 } 1946 1947 if ((pp->sp_state & (SS_LSTART|SS_INLSTART)) == SS_LSTART) { 1948 untimeout(si_lstart, (caddr_t)pp, pp->lstart_ch); 1949 } else { 1950 pp->sp_state |= SS_LSTART; 1951 } 1952 DPRINT((pp, DBG_START, "arming lstart, time=%d\n", time)); 1953 pp->lstart_ch = timeout(si_lstart, (caddr_t)pp, time); 1954 } 1955 1956out: 1957 splx(oldspl); 1958 DPRINT((pp, DBG_EXIT|DBG_START, "leave si_start()\n")); 1959} 1960 1961/* 1962 * Note: called at splsoftclock from the timeout code 1963 * This has to deal with two things... cause wakeups while waiting for 1964 * tty drains on last process exit, and call l_start at about the right 1965 * time for protocols like ppp. 1966 */ 1967static void 1968si_lstart(void *arg) 1969{ 1970 struct si_port *pp = arg; 1971 struct tty *tp; 1972 int oldspl; 1973 1974 DPRINT((pp, DBG_ENTRY|DBG_LSTART, "si_lstart(%x) sp_state %x\n", 1975 pp, pp->sp_state)); 1976 1977 oldspl = spltty(); 1978 1979 if ((pp->sp_state & SS_OPEN) == 0 || (pp->sp_state & SS_LSTART) == 0) { 1980 splx(oldspl); 1981 return; 1982 } 1983 pp->sp_state &= ~SS_LSTART; 1984 pp->sp_state |= SS_INLSTART; 1985 1986 tp = pp->sp_tty; 1987 1988 /* deal with the process exit case */ 1989 ttwwakeup(tp); 1990 1991 /* nudge protocols - eg: ppp */ 1992 (*linesw[tp->t_line].l_start)(tp); 1993 1994 pp->sp_state &= ~SS_INLSTART; 1995 splx(oldspl); 1996} 1997 1998/* 1999 * Stop output on a line. called at spltty(); 2000 */ 2001void 2002si_stop(struct tty *tp, int rw) 2003{ 2004 volatile struct si_channel *ccbp; 2005 struct si_port *pp; 2006 2007 pp = TP2PP(tp); 2008 ccbp = pp->sp_ccb; 2009 2010 DPRINT((TP2PP(tp), DBG_ENTRY|DBG_STOP, "si_stop(%x,%x)\n", tp, rw)); 2011 2012 /* XXX: must check (rw & FWRITE | FREAD) etc flushing... */ 2013 if (rw & FWRITE) { 2014 /* what level are we meant to be flushing anyway? */ 2015 if (tp->t_state & TS_BUSY) { 2016 si_command(TP2PP(tp), WFLUSH, SI_NOWAIT); 2017 tp->t_state &= ~TS_BUSY; 2018 ttwwakeup(tp); /* Bruce???? */ 2019 } 2020 } 2021#if 1 /* XXX: this doesn't work right yet.. */ 2022 /* XXX: this may have been failing because we used to call l_rint() 2023 * while we were looping based on these two counters. Now, we collect 2024 * the data and then loop stuffing it into l_rint(), making this 2025 * useless. Should we cause this to blow away the staging buffer? 2026 */ 2027 if (rw & FREAD) { 2028 ccbp->hi_rxopos = ccbp->hi_rxipos; 2029 } 2030#endif 2031} 2032 2033/* 2034 * Issue a command to the host card CPU. 2035 */ 2036 2037static void 2038si_command(struct si_port *pp, int cmd, int waitflag) 2039{ 2040 int oldspl; 2041 volatile struct si_channel *ccbp = pp->sp_ccb; 2042 int x; 2043 2044 DPRINT((pp, DBG_ENTRY|DBG_PARAM, "si_command(%x,%x,%d): hi_stat 0x%x\n", 2045 pp, cmd, waitflag, ccbp->hi_stat)); 2046 2047 oldspl = spltty(); /* Keep others out */ 2048 2049 /* wait until it's finished what it was doing.. */ 2050 /* XXX: sits in IDLE_BREAK until something disturbs it or break 2051 * is turned off. */ 2052 while((x = ccbp->hi_stat) != IDLE_OPEN && 2053 x != IDLE_CLOSE && 2054 x != IDLE_BREAK && 2055 x != cmd) { 2056 if (in_intr) { /* Prevent sleep in intr */ 2057 DPRINT((pp, DBG_PARAM, 2058 "cmd intr collision - completing %d\trequested %d\n", 2059 x, cmd)); 2060 splx(oldspl); 2061 return; 2062 } else if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2063 "sicmd1", 1)) { 2064 splx(oldspl); 2065 return; 2066 } 2067 } 2068 /* it should now be in IDLE_{OPEN|CLOSE|BREAK}, or "cmd" */ 2069 2070 /* if there was a pending command, cause a state-change wakeup */ 2071 switch(pp->sp_pend) { 2072 case LOPEN: 2073 case MPEND: 2074 case MOPEN: 2075 case CONFIG: 2076 case SBREAK: 2077 case EBREAK: 2078 wakeup(&pp->sp_state); 2079 break; 2080 default: 2081 break; 2082 } 2083 2084 pp->sp_pend = cmd; /* New command pending */ 2085 ccbp->hi_stat = cmd; /* Post it */ 2086 2087 if (waitflag) { 2088 if (in_intr) { /* If in interrupt handler */ 2089 DPRINT((pp, DBG_PARAM, 2090 "attempt to sleep in si_intr - cmd req %d\n", 2091 cmd)); 2092 splx(oldspl); 2093 return; 2094 } else while(ccbp->hi_stat != IDLE_OPEN && 2095 ccbp->hi_stat != IDLE_BREAK) { 2096 if (ttysleep(pp->sp_tty, (caddr_t)&pp->sp_state, TTIPRI|PCATCH, 2097 "sicmd2", 0)) 2098 break; 2099 } 2100 } 2101 splx(oldspl); 2102} 2103 2104static void 2105si_disc_optim(struct tty *tp, struct termios *t, struct si_port *pp) 2106{ 2107 /* 2108 * XXX can skip a lot more cases if Smarts. Maybe 2109 * (IGNCR | ISTRIP | IXON) in c_iflag. But perhaps we 2110 * shouldn't skip if (TS_CNTTB | TS_LNCH) is set in t_state. 2111 */ 2112 if (!(t->c_iflag & (ICRNL | IGNCR | IMAXBEL | INLCR | ISTRIP | IXON)) && 2113 (!(t->c_iflag & BRKINT) || (t->c_iflag & IGNBRK)) && 2114 (!(t->c_iflag & PARMRK) || 2115 (t->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK)) && 2116 !(t->c_lflag & (ECHO | ICANON | IEXTEN | ISIG | PENDIN)) && 2117 linesw[tp->t_line].l_rint == ttyinput) 2118 tp->t_state |= TS_CAN_BYPASS_L_RINT; 2119 else 2120 tp->t_state &= ~TS_CAN_BYPASS_L_RINT; 2121 pp->sp_hotchar = linesw[tp->t_line].l_hotchar; 2122 DPRINT((pp, DBG_OPTIM, "bypass: %s, hotchar: %x\n", 2123 (tp->t_state & TS_CAN_BYPASS_L_RINT) ? "on" : "off", 2124 pp->sp_hotchar)); 2125} 2126 2127 2128#ifdef SI_DEBUG 2129 2130void 2131si_dprintf(struct si_port *pp, int flags, const char *fmt, ...) 2132{ 2133 va_list ap; 2134 2135 if ((pp == NULL && (si_debug&flags)) || 2136 (pp != NULL && ((pp->sp_debug&flags) || (si_debug&flags)))) { 2137 if (pp != NULL) 2138 printf("%ci%d(%d): ", 's', 2139 (int)SI_CARD(minor(pp->sp_tty->t_dev)), 2140 (int)SI_PORT(minor(pp->sp_tty->t_dev))); 2141 va_start(ap, fmt); 2142 vprintf(fmt, ap); 2143 va_end(ap); 2144 } 2145} 2146 2147static char * 2148si_mctl2str(enum si_mctl cmd) 2149{ 2150 switch (cmd) { 2151 case GET: 2152 return("GET"); 2153 case SET: 2154 return("SET"); 2155 case BIS: 2156 return("BIS"); 2157 case BIC: 2158 return("BIC"); 2159 } 2160 return("BAD"); 2161} 2162 2163#endif /* DEBUG */ 2164 2165static char * 2166si_modulename(int host_type, int uart_type) 2167{ 2168 switch (host_type) { 2169 /* Z280 based cards */ 2170 case SIEISA: 2171 case SIHOST2: 2172 case SIHOST: 2173 case SIPCI: 2174 switch (uart_type) { 2175 case 0: 2176 return(" (XIO)"); 2177 case 1: 2178 return(" (SI)"); 2179 } 2180 break; 2181 /* T225 based hosts */ 2182 case SIJETPCI: 2183 case SIJETISA: 2184 switch (uart_type) { 2185 case 0: 2186 return(" (SI)"); 2187 case 40: 2188 return(" (XIO)"); 2189 case 72: 2190 return(" (SXDC)"); 2191 } 2192 break; 2193 } 2194 return(""); 2195} 2196