dhu.c revision 1.37
1 /* $NetBSD: dhu.c,v 1.37 2005/02/04 02:10:47 perry Exp $ */ 2 /* 3 * Copyright (c) 2003, Hugh Graham. 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Ralph Campbell and Rick Macklem. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /* 36 * Copyright (c) 1996 Ken C. Wellsch. All rights reserved. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * Ralph Campbell and Rick Macklem. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the University of 52 * California, Berkeley and its contributors. 53 * 4. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70 #include <sys/cdefs.h> 71 __KERNEL_RCSID(0, "$NetBSD: dhu.c,v 1.37 2005/02/04 02:10:47 perry Exp $"); 72 73 #include <sys/param.h> 74 #include <sys/systm.h> 75 #include <sys/ioctl.h> 76 #include <sys/tty.h> 77 #include <sys/proc.h> 78 #include <sys/buf.h> 79 #include <sys/conf.h> 80 #include <sys/file.h> 81 #include <sys/uio.h> 82 #include <sys/kernel.h> 83 #include <sys/syslog.h> 84 #include <sys/device.h> 85 86 #include <machine/bus.h> 87 #include <machine/scb.h> 88 89 #include <dev/qbus/ubavar.h> 90 91 #include <dev/qbus/dhureg.h> 92 93 #include "ioconf.h" 94 95 /* A DHU-11 has 16 ports while a DHV-11 has only 8. We use 16 by default */ 96 97 #define NDHULINE 16 98 99 #define DHU_M2U(c) ((c)>>4) /* convert minor(dev) to unit # */ 100 #define DHU_LINE(u) ((u)&0xF) /* extract line # from minor(dev) */ 101 102 struct dhu_softc { 103 struct device sc_dev; /* Device struct used by config */ 104 struct evcnt sc_rintrcnt; /* Interrupt statistics */ 105 struct evcnt sc_tintrcnt; /* Interrupt statistics */ 106 int sc_type; /* controller type, DHU or DHV */ 107 int sc_lines; /* number of lines */ 108 bus_space_tag_t sc_iot; 109 bus_space_handle_t sc_ioh; 110 bus_dma_tag_t sc_dmat; 111 struct { 112 struct tty *dhu_tty; /* what we work on */ 113 bus_dmamap_t dhu_dmah; 114 int dhu_state; /* to manage TX output status */ 115 short dhu_cc; /* character count on TX */ 116 short dhu_modem; /* modem bits state */ 117 } sc_dhu[NDHULINE]; 118 }; 119 120 #define IS_DHU 16 /* Unibus DHU-11 board linecount */ 121 #define IS_DHV 8 /* Q-bus DHV-11 or DHQ-11 */ 122 123 #define STATE_IDLE 000 /* no current output in progress */ 124 #define STATE_DMA_RUNNING 001 /* DMA TX in progress */ 125 #define STATE_DMA_STOPPED 002 /* DMA TX was aborted */ 126 #define STATE_TX_ONE_CHAR 004 /* did a single char directly */ 127 128 /* Flags used to monitor modem bits, make them understood outside driver */ 129 130 #define DML_DTR TIOCM_DTR 131 #define DML_RTS TIOCM_RTS 132 #define DML_CTS TIOCM_CTS 133 #define DML_DCD TIOCM_CD 134 #define DML_RI TIOCM_RI 135 #define DML_DSR TIOCM_DSR 136 #define DML_BRK 0100000 /* no equivalent, we will mask */ 137 138 #define DHU_READ_WORD(reg) \ 139 bus_space_read_2(sc->sc_iot, sc->sc_ioh, reg) 140 #define DHU_WRITE_WORD(reg, val) \ 141 bus_space_write_2(sc->sc_iot, sc->sc_ioh, reg, val) 142 #define DHU_READ_BYTE(reg) \ 143 bus_space_read_1(sc->sc_iot, sc->sc_ioh, reg) 144 #define DHU_WRITE_BYTE(reg, val) \ 145 bus_space_write_1(sc->sc_iot, sc->sc_ioh, reg, val) 146 147 148 /* On a stock DHV, channel pairs (0/1, 2/3, etc.) must use */ 149 /* a baud rate from the same group. So limiting to B is likely */ 150 /* best, although clone boards like the ABLE QHV allow all settings. */ 151 152 static const struct speedtab dhuspeedtab[] = { 153 { 0, 0 }, /* Groups */ 154 { 50, DHU_LPR_B50 }, /* A */ 155 { 75, DHU_LPR_B75 }, /* B */ 156 { 110, DHU_LPR_B110 }, /* A and B */ 157 { 134, DHU_LPR_B134 }, /* A and B */ 158 { 150, DHU_LPR_B150 }, /* B */ 159 { 300, DHU_LPR_B300 }, /* A and B */ 160 { 600, DHU_LPR_B600 }, /* A and B */ 161 { 1200, DHU_LPR_B1200 }, /* A and B */ 162 { 1800, DHU_LPR_B1800 }, /* B */ 163 { 2000, DHU_LPR_B2000 }, /* B */ 164 { 2400, DHU_LPR_B2400 }, /* A and B */ 165 { 4800, DHU_LPR_B4800 }, /* A and B */ 166 { 7200, DHU_LPR_B7200 }, /* A */ 167 { 9600, DHU_LPR_B9600 }, /* A and B */ 168 { 19200, DHU_LPR_B19200 }, /* B */ 169 { 38400, DHU_LPR_B38400 }, /* A */ 170 { -1, -1 } 171 }; 172 173 static int dhu_match(struct device *, struct cfdata *, void *); 174 static void dhu_attach(struct device *, struct device *, void *); 175 static void dhurint(void *); 176 static void dhuxint(void *); 177 static void dhustart(struct tty *); 178 static int dhuparam(struct tty *, struct termios *); 179 static int dhuiflow(struct tty *, int); 180 static unsigned dhumctl(struct dhu_softc *,int, int, int); 181 182 CFATTACH_DECL(dhu, sizeof(struct dhu_softc), 183 dhu_match, dhu_attach, NULL, NULL); 184 185 dev_type_open(dhuopen); 186 dev_type_close(dhuclose); 187 dev_type_read(dhuread); 188 dev_type_write(dhuwrite); 189 dev_type_ioctl(dhuioctl); 190 dev_type_stop(dhustop); 191 dev_type_tty(dhutty); 192 dev_type_poll(dhupoll); 193 194 const struct cdevsw dhu_cdevsw = { 195 dhuopen, dhuclose, dhuread, dhuwrite, dhuioctl, 196 dhustop, dhutty, dhupoll, nommap, ttykqfilter, D_TTY 197 }; 198 199 /* Autoconfig handles: setup the controller to interrupt, */ 200 /* then complete the housecleaning for full operation */ 201 202 static int 203 dhu_match(parent, cf, aux) 204 struct device *parent; 205 struct cfdata *cf; 206 void *aux; 207 { 208 struct uba_attach_args *ua = aux; 209 int n; 210 211 /* Reset controller to initialize, enable TX/RX interrupts */ 212 /* to catch floating vector info elsewhere when completed */ 213 214 bus_space_write_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR, 215 DHU_CSR_MASTER_RESET | DHU_CSR_RXIE | DHU_CSR_TXIE); 216 217 /* Now wait up to 3 seconds for self-test to complete. */ 218 219 for (n = 0; n < 300; n++) { 220 DELAY(10000); 221 if ((bus_space_read_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR) & 222 DHU_CSR_MASTER_RESET) == 0) 223 break; 224 } 225 226 /* If the RESET did not clear after 3 seconds, */ 227 /* the controller must be broken. */ 228 229 if (n >= 300) 230 return 0; 231 232 /* Check whether diagnostic run has signalled a failure. */ 233 234 if ((bus_space_read_2(ua->ua_iot, ua->ua_ioh, DHU_UBA_CSR) & 235 DHU_CSR_DIAG_FAIL) != 0) 236 return 0; 237 238 return 1; 239 } 240 241 static void 242 dhu_attach(parent, self, aux) 243 struct device *parent, *self; 244 void *aux; 245 { 246 struct dhu_softc *sc = (void *)self; 247 struct uba_attach_args *ua = aux; 248 unsigned c; 249 int n, i; 250 251 sc->sc_iot = ua->ua_iot; 252 sc->sc_ioh = ua->ua_ioh; 253 sc->sc_dmat = ua->ua_dmat; 254 /* Process the 8 bytes of diagnostic info put into */ 255 /* the FIFO following the master reset operation. */ 256 257 printf("\n%s:", self->dv_xname); 258 for (n = 0; n < 8; n++) { 259 c = DHU_READ_WORD(DHU_UBA_RBUF); 260 261 if ((c&DHU_DIAG_CODE) == DHU_DIAG_CODE) { 262 if ((c&0200) == 0000) 263 printf(" rom(%d) version %d", 264 ((c>>1)&01), ((c>>2)&037)); 265 else if (((c>>2)&07) != 0) 266 printf(" diag-error(proc%d)=%x", 267 ((c>>1)&01), ((c>>2)&07)); 268 } 269 } 270 271 c = DHU_READ_WORD(DHU_UBA_STAT); 272 273 sc->sc_type = (c & DHU_STAT_DHU)? IS_DHU: IS_DHV; 274 275 sc->sc_lines = 8; /* default */ 276 if (sc->sc_type == IS_DHU && (c & DHU_STAT_MDL)) 277 sc->sc_lines = 16; 278 279 printf("\n%s: DH%s-11\n", self->dv_xname, 280 sc->sc_type == IS_DHU ? "U" : "V"); 281 282 for (i = 0; i < sc->sc_lines; i++) { 283 struct tty *tp; 284 tp = sc->sc_dhu[i].dhu_tty = ttymalloc(); 285 sc->sc_dhu[i].dhu_state = STATE_IDLE; 286 bus_dmamap_create(sc->sc_dmat, tp->t_outq.c_cn, 1, 287 tp->t_outq.c_cn, 0, BUS_DMA_ALLOCNOW|BUS_DMA_NOWAIT, 288 &sc->sc_dhu[i].dhu_dmah); 289 bus_dmamap_load(sc->sc_dmat, sc->sc_dhu[i].dhu_dmah, 290 tp->t_outq.c_cs, tp->t_outq.c_cn, 0, BUS_DMA_NOWAIT); 291 292 } 293 294 /* Now establish RX & TX interrupt handlers */ 295 296 uba_intr_establish(ua->ua_icookie, ua->ua_cvec, 297 dhurint, sc, &sc->sc_rintrcnt); 298 uba_intr_establish(ua->ua_icookie, ua->ua_cvec + 4, 299 dhuxint, sc, &sc->sc_tintrcnt); 300 evcnt_attach_dynamic(&sc->sc_rintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 301 sc->sc_dev.dv_xname, "rintr"); 302 evcnt_attach_dynamic(&sc->sc_tintrcnt, EVCNT_TYPE_INTR, ua->ua_evcnt, 303 sc->sc_dev.dv_xname, "tintr"); 304 } 305 306 /* Receiver Interrupt */ 307 308 static void 309 dhurint(arg) 310 void *arg; 311 { 312 struct dhu_softc *sc = arg; 313 struct tty *tp; 314 int cc, line; 315 unsigned c, delta; 316 int overrun = 0; 317 318 while ((c = DHU_READ_WORD(DHU_UBA_RBUF)) & DHU_RBUF_DATA_VALID) { 319 320 /* Ignore diagnostic FIFO entries. */ 321 322 if ((c & DHU_DIAG_CODE) == DHU_DIAG_CODE) 323 continue; 324 325 cc = c & 0xFF; 326 line = DHU_LINE(c>>8); 327 tp = sc->sc_dhu[line].dhu_tty; 328 329 /* LINK.TYPE is set so we get modem control FIFO entries */ 330 331 if ((c & DHU_DIAG_CODE) == DHU_MODEM_CODE) { 332 c = (c << 8); 333 /* Do MDMBUF flow control, wakeup sleeping opens */ 334 if (c & DHU_STAT_DCD) { 335 if (!(tp->t_state & TS_CARR_ON)) 336 (void)(*tp->t_linesw->l_modem)(tp, 1); 337 } 338 else if ((tp->t_state & TS_CARR_ON) && 339 (*tp->t_linesw->l_modem)(tp, 0) == 0) 340 (void) dhumctl(sc, line, 0, DMSET); 341 342 /* Do CRTSCTS flow control */ 343 delta = c ^ sc->sc_dhu[line].dhu_modem; 344 sc->sc_dhu[line].dhu_modem = c; 345 if ((delta & DHU_STAT_CTS) && 346 (tp->t_state & TS_ISOPEN) && 347 (tp->t_cflag & CRTSCTS)) { 348 if (c & DHU_STAT_CTS) { 349 tp->t_state &= ~TS_TTSTOP; 350 ttstart(tp); 351 } else { 352 tp->t_state |= TS_TTSTOP; 353 dhustop(tp, 0); 354 } 355 } 356 continue; 357 } 358 359 if (!(tp->t_state & TS_ISOPEN)) { 360 wakeup((caddr_t)&tp->t_rawq); 361 continue; 362 } 363 364 if ((c & DHU_RBUF_OVERRUN_ERR) && overrun == 0) { 365 log(LOG_WARNING, "%s: silo overflow, line %d\n", 366 sc->sc_dev.dv_xname, line); 367 overrun = 1; 368 } 369 /* A BREAK key will appear as a NULL with a framing error */ 370 if (c & DHU_RBUF_FRAMING_ERR) 371 cc |= TTY_FE; 372 if (c & DHU_RBUF_PARITY_ERR) 373 cc |= TTY_PE; 374 375 (*tp->t_linesw->l_rint)(cc, tp); 376 } 377 } 378 379 /* Transmitter Interrupt */ 380 381 static void 382 dhuxint(arg) 383 void *arg; 384 { 385 struct dhu_softc *sc = arg; 386 struct tty *tp; 387 int line, i; 388 389 while ((i = DHU_READ_BYTE(DHU_UBA_CSR_HI)) & (DHU_CSR_TX_ACTION >> 8)) { 390 391 line = DHU_LINE(i); 392 tp = sc->sc_dhu[line].dhu_tty; 393 394 if (i & (DHU_CSR_TX_DMA_ERROR >> 8)) 395 printf("%s: DMA ERROR on line: %d\n", 396 sc->sc_dev.dv_xname, line); 397 if (i & (DHU_CSR_DIAG_FAIL >> 8)) 398 printf("%s: DIAG FAIL on line: %d\n", 399 sc->sc_dev.dv_xname, line); 400 401 tp->t_state &= ~TS_BUSY; 402 if (tp->t_state & TS_FLUSH) 403 tp->t_state &= ~TS_FLUSH; 404 else { 405 if (sc->sc_dhu[line].dhu_state == STATE_DMA_STOPPED) 406 sc->sc_dhu[line].dhu_cc -= 407 DHU_READ_WORD(DHU_UBA_TBUFCNT); 408 ndflush(&tp->t_outq, sc->sc_dhu[line].dhu_cc); 409 sc->sc_dhu[line].dhu_cc = 0; 410 } 411 412 sc->sc_dhu[line].dhu_state = STATE_IDLE; 413 414 (*tp->t_linesw->l_start)(tp); 415 } 416 } 417 418 int 419 dhuopen(dev, flag, mode, p) 420 dev_t dev; 421 int flag, mode; 422 struct proc *p; 423 { 424 struct tty *tp; 425 int unit, line; 426 struct dhu_softc *sc; 427 int s, error = 0; 428 429 unit = DHU_M2U(minor(dev)); 430 line = DHU_LINE(minor(dev)); 431 432 if (unit >= dhu_cd.cd_ndevs || dhu_cd.cd_devs[unit] == NULL) 433 return (ENXIO); 434 435 sc = dhu_cd.cd_devs[unit]; 436 437 if (line >= sc->sc_lines) 438 return ENXIO; 439 440 if (sc->sc_type == IS_DHU) { 441 s = spltty(); /* CSR 3:0 must be 0 */ 442 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE); 443 DHU_WRITE_BYTE(DHU_UBA_RXTIME, 10); 444 splx(s); /* RX int delay 10ms */ 445 } 446 447 s = spltty(); 448 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line); 449 sc->sc_dhu[line].dhu_modem = DHU_READ_WORD(DHU_UBA_STAT); 450 (void) splx(s); 451 452 tp = sc->sc_dhu[line].dhu_tty; 453 454 tp->t_oproc = dhustart; 455 tp->t_param = dhuparam; 456 tp->t_hwiflow = dhuiflow; 457 tp->t_dev = dev; 458 if ((tp->t_state & TS_ISOPEN) == 0) { 459 ttychars(tp); 460 if (tp->t_ispeed == 0) { 461 tp->t_iflag = TTYDEF_IFLAG; 462 tp->t_oflag = TTYDEF_OFLAG; 463 tp->t_cflag = TTYDEF_CFLAG; 464 tp->t_lflag = TTYDEF_LFLAG; 465 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 466 } 467 (void) dhuparam(tp, &tp->t_termios); 468 ttsetwater(tp); 469 } else if ((tp->t_state & TS_XCLUDE) && curproc->p_ucred->cr_uid != 0) 470 return (EBUSY); 471 /* Use DMBIS and *not* DMSET or else we clobber incoming bits */ 472 if (dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS) & DML_DCD) 473 tp->t_state |= TS_CARR_ON; 474 s = spltty(); 475 while (!(flag & O_NONBLOCK) && !(tp->t_cflag & CLOCAL) && 476 !(tp->t_state & TS_CARR_ON)) { 477 tp->t_wopen++; 478 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 479 TTIPRI | PCATCH, ttopen, 0); 480 tp->t_wopen--; 481 if (error) 482 break; 483 } 484 (void) splx(s); 485 if (error) 486 return (error); 487 return ((*tp->t_linesw->l_open)(dev, tp)); 488 } 489 490 /*ARGSUSED*/ 491 int 492 dhuclose(dev, flag, mode, p) 493 dev_t dev; 494 int flag, mode; 495 struct proc *p; 496 { 497 struct tty *tp; 498 int unit, line; 499 struct dhu_softc *sc; 500 501 unit = DHU_M2U(minor(dev)); 502 line = DHU_LINE(minor(dev)); 503 504 sc = dhu_cd.cd_devs[unit]; 505 506 tp = sc->sc_dhu[line].dhu_tty; 507 508 (*tp->t_linesw->l_close)(tp, flag); 509 510 /* Make sure a BREAK state is not left enabled. */ 511 512 (void) dhumctl(sc, line, DML_BRK, DMBIC); 513 514 /* Do a hangup if so required. */ 515 516 if ((tp->t_cflag & HUPCL) || tp->t_wopen || 517 !(tp->t_state & TS_ISOPEN)) 518 (void) dhumctl(sc, line, 0, DMSET); 519 520 return (ttyclose(tp)); 521 } 522 523 int 524 dhuread(dev, uio, flag) 525 dev_t dev; 526 struct uio *uio; 527 int flag; 528 { 529 struct dhu_softc *sc; 530 struct tty *tp; 531 532 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))]; 533 534 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty; 535 return ((*tp->t_linesw->l_read)(tp, uio, flag)); 536 } 537 538 int 539 dhuwrite(dev, uio, flag) 540 dev_t dev; 541 struct uio *uio; 542 int flag; 543 { 544 struct dhu_softc *sc; 545 struct tty *tp; 546 547 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))]; 548 549 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty; 550 return ((*tp->t_linesw->l_write)(tp, uio, flag)); 551 } 552 553 int 554 dhupoll(dev, events, p) 555 dev_t dev; 556 int events; 557 struct proc *p; 558 { 559 struct dhu_softc *sc; 560 struct tty *tp; 561 562 sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))]; 563 564 tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty; 565 return ((*tp->t_linesw->l_poll)(tp, events, p)); 566 } 567 568 /*ARGSUSED*/ 569 int 570 dhuioctl(dev, cmd, data, flag, p) 571 dev_t dev; 572 u_long cmd; 573 caddr_t data; 574 int flag; 575 struct proc *p; 576 { 577 struct dhu_softc *sc; 578 struct tty *tp; 579 int unit, line; 580 int error; 581 582 unit = DHU_M2U(minor(dev)); 583 line = DHU_LINE(minor(dev)); 584 sc = dhu_cd.cd_devs[unit]; 585 tp = sc->sc_dhu[line].dhu_tty; 586 587 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flag, p); 588 if (error != EPASSTHROUGH) 589 return (error); 590 591 error = ttioctl(tp, cmd, data, flag, p); 592 if (error != EPASSTHROUGH) 593 return (error); 594 595 switch (cmd) { 596 597 case TIOCSBRK: 598 (void) dhumctl(sc, line, DML_BRK, DMBIS); 599 break; 600 601 case TIOCCBRK: 602 (void) dhumctl(sc, line, DML_BRK, DMBIC); 603 break; 604 605 case TIOCSDTR: 606 (void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS); 607 break; 608 609 case TIOCCDTR: 610 (void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIC); 611 break; 612 613 case TIOCMSET: 614 (void) dhumctl(sc, line, *(int *)data, DMSET); 615 break; 616 617 case TIOCMBIS: 618 (void) dhumctl(sc, line, *(int *)data, DMBIS); 619 break; 620 621 case TIOCMBIC: 622 (void) dhumctl(sc, line, *(int *)data, DMBIC); 623 break; 624 625 case TIOCMGET: 626 *(int *)data = (dhumctl(sc, line, 0, DMGET) & ~DML_BRK); 627 break; 628 629 default: 630 return (EPASSTHROUGH); 631 } 632 return (0); 633 } 634 635 struct tty * 636 dhutty(dev) 637 dev_t dev; 638 { 639 struct dhu_softc *sc = dhu_cd.cd_devs[DHU_M2U(minor(dev))]; 640 struct tty *tp = sc->sc_dhu[DHU_LINE(minor(dev))].dhu_tty; 641 return (tp); 642 } 643 644 /*ARGSUSED*/ 645 void 646 dhustop(tp, flag) 647 struct tty *tp; 648 int flag; 649 { 650 struct dhu_softc *sc; 651 int line; 652 int s; 653 654 s = spltty(); 655 656 if (tp->t_state & TS_BUSY) { 657 658 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))]; 659 line = DHU_LINE(minor(tp->t_dev)); 660 661 if (sc->sc_dhu[line].dhu_state == STATE_DMA_RUNNING) { 662 663 sc->sc_dhu[line].dhu_state = STATE_DMA_STOPPED; 664 665 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line); 666 DHU_WRITE_WORD(DHU_UBA_LNCTRL, 667 DHU_READ_WORD(DHU_UBA_LNCTRL) | 668 DHU_LNCTRL_DMA_ABORT); 669 } 670 671 if (!(tp->t_state & TS_TTSTOP)) 672 tp->t_state |= TS_FLUSH; 673 } 674 (void) splx(s); 675 } 676 677 static void 678 dhustart(tp) 679 struct tty *tp; 680 { 681 struct dhu_softc *sc; 682 int line, cc; 683 int addr; 684 int s; 685 686 s = spltty(); 687 if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) 688 goto out; 689 if (tp->t_outq.c_cc <= tp->t_lowat) { 690 if (tp->t_state & TS_ASLEEP) { 691 tp->t_state &= ~TS_ASLEEP; 692 wakeup((caddr_t)&tp->t_outq); 693 } 694 selwakeup(&tp->t_wsel); 695 } 696 if (tp->t_outq.c_cc == 0) 697 goto out; 698 cc = ndqb(&tp->t_outq, 0); 699 if (cc == 0) 700 goto out; 701 702 tp->t_state |= TS_BUSY; 703 704 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))]; 705 706 line = DHU_LINE(minor(tp->t_dev)); 707 708 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line); 709 710 sc->sc_dhu[line].dhu_cc = cc; 711 712 if (cc == 1 && sc->sc_type == IS_DHV) { 713 714 sc->sc_dhu[line].dhu_state = STATE_TX_ONE_CHAR; 715 716 DHU_WRITE_WORD(DHU_UBA_TXCHAR, 717 DHU_TXCHAR_DATA_VALID | *tp->t_outq.c_cf); 718 719 } else { 720 721 sc->sc_dhu[line].dhu_state = STATE_DMA_RUNNING; 722 723 addr = sc->sc_dhu[line].dhu_dmah->dm_segs[0].ds_addr + 724 (tp->t_outq.c_cf - tp->t_outq.c_cs); 725 726 DHU_WRITE_WORD(DHU_UBA_TBUFCNT, cc); 727 DHU_WRITE_WORD(DHU_UBA_TBUFAD1, addr & 0xFFFF); 728 DHU_WRITE_WORD(DHU_UBA_TBUFAD2, ((addr>>16) & 0x3F) | 729 DHU_TBUFAD2_TX_ENABLE); 730 DHU_WRITE_WORD(DHU_UBA_LNCTRL, 731 DHU_READ_WORD(DHU_UBA_LNCTRL) & ~DHU_LNCTRL_DMA_ABORT); 732 DHU_WRITE_WORD(DHU_UBA_TBUFAD2, 733 DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_DMA_START); 734 } 735 out: 736 (void) splx(s); 737 return; 738 } 739 740 static int 741 dhuparam(tp, t) 742 struct tty *tp; 743 struct termios *t; 744 { 745 struct dhu_softc *sc; 746 int cflag = t->c_cflag; 747 int ispeed = ttspeedtab(t->c_ispeed, dhuspeedtab); 748 int ospeed = ttspeedtab(t->c_ospeed, dhuspeedtab); 749 unsigned lpr, lnctrl; 750 int unit, line; 751 int s; 752 753 unit = DHU_M2U(minor(tp->t_dev)); 754 line = DHU_LINE(minor(tp->t_dev)); 755 756 sc = dhu_cd.cd_devs[unit]; 757 758 /* check requested parameters */ 759 if (ospeed < 0 || ispeed < 0) 760 return (EINVAL); 761 762 tp->t_ispeed = t->c_ispeed; 763 tp->t_ospeed = t->c_ospeed; 764 tp->t_cflag = cflag; 765 766 if (ospeed == 0) { 767 (void) dhumctl(sc, line, 0, DMSET); /* hang up line */ 768 return (0); 769 } 770 771 s = spltty(); 772 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line); 773 774 lpr = ((ispeed&017)<<8) | ((ospeed&017)<<12) ; 775 776 switch (cflag & CSIZE) { 777 778 case CS5: 779 lpr |= DHU_LPR_5_BIT_CHAR; 780 break; 781 782 case CS6: 783 lpr |= DHU_LPR_6_BIT_CHAR; 784 break; 785 786 case CS7: 787 lpr |= DHU_LPR_7_BIT_CHAR; 788 break; 789 790 default: 791 lpr |= DHU_LPR_8_BIT_CHAR; 792 break; 793 } 794 795 if (cflag & PARENB) 796 lpr |= DHU_LPR_PARENB; 797 if (!(cflag & PARODD)) 798 lpr |= DHU_LPR_EPAR; 799 if (cflag & CSTOPB) 800 lpr |= DHU_LPR_2_STOP; 801 802 DHU_WRITE_WORD(DHU_UBA_LPR, lpr); 803 804 DHU_WRITE_WORD(DHU_UBA_TBUFAD2, 805 DHU_READ_WORD(DHU_UBA_TBUFAD2) | DHU_TBUFAD2_TX_ENABLE); 806 807 lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL); 808 809 /* Setting LINK.TYPE enables modem signal change interrupts. */ 810 811 lnctrl |= (DHU_LNCTRL_RX_ENABLE | DHU_LNCTRL_LINK_TYPE); 812 813 /* Enable the auto XON/XOFF feature on the controller */ 814 815 if (t->c_iflag & IXON) 816 lnctrl |= DHU_LNCTRL_OAUTO; 817 else 818 lnctrl &= ~DHU_LNCTRL_OAUTO; 819 820 if (t->c_iflag & IXOFF) 821 lnctrl |= DHU_LNCTRL_IAUTO; 822 else 823 lnctrl &= ~DHU_LNCTRL_IAUTO; 824 825 DHU_WRITE_WORD(DHU_UBA_LNCTRL, lnctrl); 826 827 (void) splx(s); 828 return (0); 829 } 830 831 static int 832 dhuiflow(tp, flag) 833 struct tty *tp; 834 int flag; 835 { 836 struct dhu_softc *sc; 837 int line = DHU_LINE(minor(tp->t_dev)); 838 839 if (tp->t_cflag & CRTSCTS) { 840 sc = dhu_cd.cd_devs[DHU_M2U(minor(tp->t_dev))]; 841 (void) dhumctl(sc, line, DML_RTS, ((flag)? DMBIC: DMBIS)); 842 return (1); 843 } 844 return (0); 845 } 846 847 static unsigned 848 dhumctl(sc, line, bits, how) 849 struct dhu_softc *sc; 850 int line, bits, how; 851 { 852 unsigned status; 853 unsigned lnctrl; 854 unsigned mbits; 855 int s; 856 857 s = spltty(); 858 859 DHU_WRITE_BYTE(DHU_UBA_CSR, DHU_CSR_RXIE | line); 860 861 mbits = 0; 862 863 /* external signals as seen from the port */ 864 865 status = DHU_READ_WORD(DHU_UBA_STAT); 866 867 if (status & DHU_STAT_CTS) 868 mbits |= DML_CTS; 869 870 if (status & DHU_STAT_DCD) 871 mbits |= DML_DCD; 872 873 if (status & DHU_STAT_DSR) 874 mbits |= DML_DSR; 875 876 if (status & DHU_STAT_RI) 877 mbits |= DML_RI; 878 879 /* internal signals/state delivered to port */ 880 881 lnctrl = DHU_READ_WORD(DHU_UBA_LNCTRL); 882 883 if (lnctrl & DHU_LNCTRL_RTS) 884 mbits |= DML_RTS; 885 886 if (lnctrl & DHU_LNCTRL_DTR) 887 mbits |= DML_DTR; 888 889 if (lnctrl & DHU_LNCTRL_BREAK) 890 mbits |= DML_BRK; 891 892 switch (how) { 893 894 case DMSET: 895 mbits = bits; 896 break; 897 898 case DMBIS: 899 mbits |= bits; 900 break; 901 902 case DMBIC: 903 mbits &= ~bits; 904 break; 905 906 case DMGET: 907 (void) splx(s); 908 return (mbits); 909 } 910 911 if (mbits & DML_RTS) 912 lnctrl |= DHU_LNCTRL_RTS; 913 else 914 lnctrl &= ~DHU_LNCTRL_RTS; 915 916 if (mbits & DML_DTR) 917 lnctrl |= DHU_LNCTRL_DTR; 918 else 919 lnctrl &= ~DHU_LNCTRL_DTR; 920 921 if (mbits & DML_BRK) 922 lnctrl |= DHU_LNCTRL_BREAK; 923 else 924 lnctrl &= ~DHU_LNCTRL_BREAK; 925 926 DHU_WRITE_WORD(DHU_UBA_LNCTRL, lnctrl); 927 928 (void) splx(s); 929 return (mbits); 930 } 931
Indexes created Wed Sep 24 14:09:57 GMT 2025