1 /* $NetBSD: msc.c,v 1.28 2004/04/25 06:23:41 matt Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * - converted from NetBSD Amiga serial driver to A2232 serial driver 32 * by zik 931207 33 * - added ttyflags hooks rfh 940419 34 * - added new style config support rfh 940601 35 * - added code to halt board during memory load so board doesn't flip 36 * out. /dev/reload works now. Also created mschwiflow function so BSD can 37 * attempt to use board RTS flow control now. rfh 950108 38 * - Integrated work from Jukka Marin <jmarin@jmp.fi> and 39 * Timo Rossi <trossi@jyu.fi> The mscmint() code is Jukka's. 950916 40 * Integrated more bug fixes by Jukka Marin <jmarin@jmp.fi> 950918 41 * Also added Jukka's turbo board code. 950918 42 * - Reformatted to NetBSD style format. 43 * - Rewritten the carrier detect system to prevent lock-ups (jm 951029) 44 */ 45 46 /* 47 * Copyright (c) 1993 Zik. 48 * Copyright (c) 1995 Jukka Marin <jmarin@jmp.fi>. 49 * Copyright (c) 1995 Timo Rossi <trossi@jyu.fi>. 50 * Copyright (c) 1995 Rob Healey <rhealey@kas.helios.mn.org>. 51 * 52 * Redistribution and use in source and binary forms, with or without 53 * modification, are permitted provided that the following conditions 54 * are met: 55 * 1. Redistributions of source code must retain the above copyright 56 * notice, this list of conditions and the following disclaimer. 57 * 2. Redistributions in binary form must reproduce the above copyright 58 * notice, this list of conditions and the following disclaimer in the 59 * documentation and/or other materials provided with the distribution. 60 * 3. All advertising materials mentioning features or use of this software 61 * must display the following acknowledgement: 62 * This product includes software developed by the University of 63 * California, Berkeley and its contributors. 64 * 4. Neither the name of the University nor the names of its contributors 65 * may be used to endorse or promote products derived from this software 66 * without specific prior written permission. 67 * 68 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 69 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 70 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 71 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 72 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 73 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 74 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 75 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 76 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 77 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 78 * SUCH DAMAGE. 79 * 80 * - converted from NetBSD Amiga serial driver to A2232 serial driver 81 * by zik 931207 82 * - added ttyflags hooks rfh 940419 83 * - added new style config support rfh 940601 84 * - added code to halt board during memory load so board doesn't flip 85 * out. /dev/reload works now. Also created mschwiflow function so BSD can 86 * attempt to use board RTS flow control now. rfh 950108 87 * - Integrated work from Jukka Marin <jmarin@jmp.fi> and 88 * Timo Rossi <trossi@jyu.fi> The mscmint() code is Jukka's. 950916 89 * Integrated more bug fixes by Jukka Marin <jmarin@jmp.fi> 950918 90 * Also added Jukka's turbo board code. 950918 91 * - Reformatted to NetBSD style format. 92 * - Rewritten the carrier detect system to prevent lock-ups (jm 951029) 93 */ 94 95 #include <sys/cdefs.h> 96 __KERNEL_RCSID(0, "$NetBSD: msc.c,v 1.28 2004/04/25 06:23:41 matt Exp $"); 97 98 #include "msc.h" 99 100 #if NMSC > 0 101 #include <sys/param.h> 102 #include <sys/systm.h> 103 #include <sys/ioctl.h> 104 #include <sys/tty.h> 105 #include <sys/proc.h> 106 #include <sys/file.h> 107 #include <sys/malloc.h> 108 #include <sys/uio.h> 109 #include <sys/kernel.h> 110 #include <sys/syslog.h> 111 #include <sys/device.h> 112 #include <sys/conf.h> 113 114 #include <amiga/amiga/device.h> 115 #include <amiga/dev/zbusvar.h> 116 #include <amiga/dev/mscreg.h> 117 #include <machine/cpu.h> 118 119 #include <amiga/amiga/custom.h> 120 #include <amiga/amiga/cia.h> 121 #include <amiga/amiga/cc.h> 122 123 /* 6502 code for A2232 card */ 124 #include "msc6502.h" 125 126 /* 127 * Note: These are Zik's original comments: 128 * There is a bit of a "gotcha" concerning the numbering 129 * of msc devices and the specification of the number of serial 130 * lines in the kernel. 131 * 132 * Each board has seven lines, but for programming convenience 133 * and compatibility with Amiga UNIX the boards' minor device 134 * numbers are allocated in groups of sixteen: 135 * 136 * minor device numbers 137 * First board 0 2 4 6 8 10 12 138 * Second board 16 18 20 22 24 26 28 139 * Third board 32 34 36 38 40 42 44 140 * 141 * The intermediate minor device numbers are dialin versions 142 * of the same devices. ie. 10 is dialout line 6 and 11 is 143 * the dialin version of line 6. 144 * 145 * On the other hand, I have made the NMSC config option refer 146 * to the total number of a2232 cards, not the maximum 147 * minor device number. So you might have NMSC=3, in which case 148 * you have three boards with minor device numbers from 0 to 45. 149 */ 150 151 int mscparam(struct tty *, struct termios *); 152 void mscstart(struct tty *); 153 int mschwiflow(struct tty *, int); 154 int mscinitcard(struct zbus_args *); 155 156 int mscdefaultrate = TTYDEF_SPEED; 157 158 struct mscdevice mscdev[MSCSLOTS]; /* device structs for all lines */ 159 struct tty *msc_tty[MSCTTYS]; /* ttys for all lines */ 160 161 struct vbl_node msc_vbl_node[NMSC]; /* vbl interrupt node per board */ 162 163 const struct speedtab mscspeedtab_normal[] = { 164 { 0, 0 }, 165 { 50, MSCPARAM_B50 }, 166 { 75, MSCPARAM_B75 }, 167 { 110, MSCPARAM_B110 }, 168 { 134, MSCPARAM_B134 }, 169 { 150, MSCPARAM_B150 }, 170 { 300, MSCPARAM_B300 }, 171 { 600, MSCPARAM_B600 }, 172 { 1200, MSCPARAM_B1200 }, 173 { 1800, MSCPARAM_B1800 }, 174 { 2400, MSCPARAM_B2400 }, 175 { 3600, MSCPARAM_B3600 }, 176 { 4800, MSCPARAM_B4800 }, 177 { 7200, MSCPARAM_B7200 }, 178 { 9600, MSCPARAM_B9600 }, 179 { 19200, MSCPARAM_B19200 }, 180 { 115200, MSCPARAM_B115200 }, 181 { -1, -1 } 182 }; 183 184 const struct speedtab mscspeedtab_turbo[] = { 185 { 0, 0 }, 186 { 100, MSCPARAM_B50 }, 187 { 150, MSCPARAM_B75 }, 188 { 220, MSCPARAM_B110 }, 189 { 269, MSCPARAM_B134 }, 190 { 300, MSCPARAM_B150 }, 191 { 600, MSCPARAM_B300 }, 192 { 1200, MSCPARAM_B600 }, 193 { 2400, MSCPARAM_B1200 }, 194 { 3600, MSCPARAM_B1800 }, 195 { 4800, MSCPARAM_B2400 }, 196 { 7200, MSCPARAM_B3600 }, 197 { 9600, MSCPARAM_B4800 }, 198 { 14400, MSCPARAM_B7200 }, 199 { 19200, MSCPARAM_B9600 }, 200 { 38400, MSCPARAM_B19200 }, 201 { 230400, MSCPARAM_B115200 }, 202 { -1, -1 } 203 }; 204 205 const struct speedtab *mscspeedtab; 206 207 int mscmctl(dev_t dev, int bits, int howto); 208 void mscmint(register void *data); 209 210 int mscmatch(struct device *, struct cfdata *, void *); 211 void mscattach(struct device *, struct device *, void *); 212 213 #define SWFLAGS(dev) (msc->openflags | (MSCDIALIN(dev) ? 0 : TIOCFLAG_SOFTCAR)) 214 #define DEBUG_CD 0 215 216 CFATTACH_DECL(msc, sizeof(struct device), 217 mscmatch, mscattach, NULL, NULL); 218 219 dev_type_open(mscopen); 220 dev_type_close(mscclose); 221 dev_type_read(mscread); 222 dev_type_write(mscwrite); 223 dev_type_ioctl(mscioctl); 224 dev_type_stop(mscstop); 225 dev_type_tty(msctty); 226 dev_type_poll(mscpoll); 227 228 const struct cdevsw msc_cdevsw = { 229 mscopen, mscclose, mscread, mscwrite, mscioctl, 230 mscstop, msctty, mscpoll, nommap, ttykqfilter, D_TTY 231 }; 232 233 int 234 mscmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 235 { 236 struct zbus_args *zap; 237 238 zap = auxp; 239 if (zap->manid == 514 && (zap->prodid == 70 || zap->prodid == 69)) 240 return(1); 241 242 return (0); 243 } 244 245 void 246 mscattach(struct device *pdp, struct device *dp, void *auxp) 247 { 248 volatile struct mscmemory *mscmem; 249 struct mscdevice *msc; 250 struct zbus_args *zap; 251 int unit; 252 int Count; 253 254 zap = (struct zbus_args *)auxp; 255 unit = dp->dv_unit; 256 257 /* 258 * Make config msgs look nicer. 259 */ 260 printf("\n"); 261 262 if (mscinitcard(zap) != 0) { 263 printf("msc%d: Board initialize failed, bad download code.\n", unit); 264 return; 265 } 266 267 printf("msc%d: Board successfully initialized.\n", unit); 268 269 mscmem = (struct mscmemory *) zap->va; 270 271 if (mscmem->Common.Crystal == MSC_UNKNOWN) { 272 printf("msc%d: Unable to detect crystal frequency.\n", unit); 273 return; 274 } 275 276 if (mscmem->Common.Crystal == MSC_TURBO) { 277 printf("msc%d: Turbo version detected (%02x%02x:%d)\n", unit, 278 mscmem->Common.TimerH, mscmem->Common.TimerL, 279 mscmem->Common.Pad_a); 280 mscspeedtab = mscspeedtab_turbo; 281 } else { 282 printf("msc%d: Normal version detected (%02x%02x:%d)\n", unit, 283 mscmem->Common.TimerH, mscmem->Common.TimerL, 284 mscmem->Common.Pad_a); 285 mscspeedtab = mscspeedtab_normal; 286 } 287 288 mscmem->Common.CDStatus = 0; /* common status for all 7 ports */ 289 290 /* XXX 8 is a constant */ 291 for (Count = 0; Count < 8 && MSCSLOTUL(unit, Count) < MSCSLOTS; Count++) { 292 msc = &mscdev[MSCSLOTUL(unit, Count)]; 293 msc->board = mscmem; 294 msc->port = Count; 295 msc->flags = 0; 296 msc->openflags = 0; 297 msc->active = 1; 298 msc->unit = unit; 299 msc->closing = FALSE; 300 msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, Count))] = NULL; 301 msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, Count)) + 1] = NULL; 302 } 303 304 /* disable the non-existent eighth port */ 305 if (MSCSLOTUL(unit, NUMLINES) < MSCSLOTS) 306 mscdev[MSCSLOTUL(unit, NUMLINES)].active = 0; 307 308 msc_vbl_node[unit].function = (void (*) (void *)) mscmint; 309 msc_vbl_node[unit].data = (void *) unit; 310 311 add_vbl_function (&msc_vbl_node[unit], MSC_VBL_PRIORITY, (void *)unit); 312 313 return; 314 } 315 316 /* ARGSUSED */ 317 int 318 mscopen(dev_t dev, int flag, int mode, struct proc *p) 319 { 320 register struct tty *tp; 321 struct mscdevice *msc; 322 volatile struct mscstatus *ms; 323 int error = 0; 324 int s, slot, ttyn; 325 326 /* get the device structure */ 327 slot = MSCSLOT(dev); 328 ttyn = MSCTTY(dev); 329 330 if (slot >= MSCSLOTS) 331 return ENXIO; 332 333 if (MSCLINE(dev) >= NUMLINES) 334 return ENXIO; 335 336 msc = &mscdev[slot]; 337 ms = &msc->board->Status[msc->port]; 338 339 if (!msc->active) 340 return ENXIO; 341 342 /* 343 * RFH: WHY here? Put down by while like other serial drivers 344 * But if we do that it makes things bomb. 345 */ 346 s = spltty(); 347 348 if (!msc_tty[ttyn]) { 349 350 tp = ttymalloc(); 351 tty_attach(tp); 352 msc_tty[ttyn] = tp; 353 msc_tty[ttyn+1] = (struct tty *)NULL; 354 355 #if 0 356 /* default values are not optimal for this device, increase buffers. */ 357 clfree(&tp->t_rawq); 358 clfree(&tp->t_canq); 359 clfree(&tp->t_outq); 360 clalloc(&tp->t_rawq, 8192, 1); 361 clalloc(&tp->t_canq, 8192, 1); 362 clalloc(&tp->t_outq, 8192, 0); 363 #endif 364 365 } else 366 tp = msc_tty[ttyn]; 367 368 tp->t_oproc = (void (*) (struct tty *)) mscstart; 369 tp->t_param = mscparam; 370 tp->t_dev = dev; 371 tp->t_hwiflow = mschwiflow; 372 373 /* if port is still closing, just bitbucket remaining characters */ 374 if (msc->closing) { 375 ms->OutFlush = TRUE; 376 msc->closing = FALSE; 377 } 378 379 /* initialize tty */ 380 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 381 ttychars(tp); 382 if (tp->t_ispeed == 0) { 383 tp->t_iflag = TTYDEF_IFLAG; 384 tp->t_oflag = TTYDEF_OFLAG; 385 tp->t_cflag = TTYDEF_CFLAG; 386 tp->t_lflag = TTYDEF_LFLAG; 387 tp->t_ispeed = tp->t_ospeed = mscdefaultrate; 388 } 389 390 /* flags changed to be private to every unit by JM */ 391 if (msc->openflags & TIOCFLAG_CLOCAL) 392 tp->t_cflag |= CLOCAL; 393 if (msc->openflags & TIOCFLAG_CRTSCTS) 394 tp->t_cflag |= CRTSCTS; 395 if (msc->openflags & TIOCFLAG_MDMBUF) 396 tp->t_cflag |= MDMBUF; 397 398 mscparam(tp, &tp->t_termios); 399 ttsetwater(tp); 400 401 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 402 403 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 404 (mscmctl(dev, 0, DMGET) & TIOCM_CD)) 405 tp->t_state |= TS_CARR_ON; 406 else 407 tp->t_state &= ~TS_CARR_ON; 408 409 } else { 410 if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) { 411 splx(s); 412 return (EBUSY); 413 } 414 } 415 416 /* 417 * if NONBLOCK requested, ignore carrier 418 */ 419 if (flag & O_NONBLOCK) { 420 #if DEBUG_CD 421 printf("msc%d: %d open nonblock\n", msc->unit, MSCLINE(dev)); 422 #endif 423 goto done; 424 } 425 426 /* 427 * s = spltty(); 428 * 429 * This causes hangs when put here, like other TTY drivers do, rather than 430 * above, WHY? RFH 431 * 432 */ 433 434 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 435 tp->t_wopen++; 436 437 #if DEBUG_CD 438 printf("msc%d: %d waiting for CD\n", msc->unit, MSCLINE(dev)); 439 #endif 440 error = ttysleep(tp, (caddr_t)&tp->t_rawq, TTIPRI | PCATCH, ttopen, 0); 441 tp->t_wopen--; 442 443 if (error) { 444 splx(s); 445 return(error); 446 } 447 } 448 449 #if DEBUG_CD 450 printf("msc%d: %d got CD\n", msc->unit, MSCLINE(dev)); 451 #endif 452 453 done: 454 /* This is a way to handle lost XON characters */ 455 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 456 tp->t_state &= ~TS_TTSTOP; 457 ttstart (tp); 458 } 459 460 splx(s); 461 462 /* 463 * Reset the tty pointer, as there could have been a dialout 464 * use of the tty with a dialin open waiting. 465 */ 466 tp->t_dev = dev; 467 468 return tp->t_linesw->l_open(dev, tp); 469 } 470 471 472 int 473 mscclose(dev_t dev, int flag, int mode, struct proc *p) 474 { 475 register struct tty *tp; 476 int slot; 477 volatile struct mscstatus *ms; 478 struct mscdevice *msc; 479 480 /* get the device structure */ 481 slot = MSCSLOT(dev); 482 483 if (slot >= MSCSLOTS) 484 return ENXIO; 485 486 msc = &mscdev[slot]; 487 488 if (!msc->active) 489 return ENXIO; 490 491 ms = &msc->board->Status[msc->port]; 492 493 tp = msc_tty[MSCTTY(dev)]; 494 tp->t_linesw->l_close(tp, flag); 495 496 (void) mscmctl(dev, 0, DMSET); 497 498 ttyclose(tp); 499 500 if (msc->flags & TIOCM_DTR) 501 msc->closing = TRUE; /* flush remaining characters before dropping DTR */ 502 else 503 ms->OutFlush = TRUE; /* just bitbucket remaining characters */ 504 505 return (0); 506 } 507 508 509 int 510 mscread(dev_t dev, struct uio *uio, int flag) 511 { 512 register struct tty *tp; 513 514 tp = msc_tty[MSCTTY(dev)]; 515 516 if (! tp) 517 return ENXIO; 518 519 return tp->t_linesw->l_read(tp, uio, flag); 520 } 521 522 523 int 524 mscwrite(dev_t dev, struct uio *uio, int flag) 525 { 526 register struct tty *tp; 527 528 tp = msc_tty[MSCTTY(dev)]; 529 530 if (! tp) 531 return ENXIO; 532 533 return tp->t_linesw->l_write(tp, uio, flag); 534 } 535 536 int 537 mscpoll(dev_t dev, int events, struct proc *p) 538 { 539 register struct tty *tp; 540 541 tp = msc_tty[MSCTTY(dev)]; 542 543 if (! tp) 544 return ENXIO; 545 546 return ((*tp->t_linesw->l_poll)(tp, events, p)); 547 } 548 549 /* 550 * This interrupt is periodically invoked in the vertical blank 551 * interrupt. It's used to keep track of the modem control lines 552 * and (new with the fast_int code) to move accumulated data up in 553 * to the tty layer. 554 * 555 * NOTE: MSCCDHACK is an invention of mine for dubious purposes. If you 556 * want to activate it add 557 * options MSCCDHACK 558 * in the kernel conf file. Basically it forces CD->Low transitions 559 * to ALWAYS send a signal to the process, even if the device is in 560 * clocal mode or an outdial device. RFH 561 */ 562 void 563 mscmint(register void *data) 564 { 565 register struct tty *tp; 566 struct mscdevice *msc; 567 volatile struct mscstatus *ms; 568 volatile u_char *ibuf, *cbuf; 569 unsigned char newhead; /* was int */ 570 unsigned char bufpos; /* was int */ 571 unsigned char ncd, ocd, ccd; 572 int unit, slot, maxslot; 573 int s, i; 574 575 unit = (int) data; 576 577 /* check each line on this board */ 578 maxslot = MSCSLOTUL(unit, NUMLINES); 579 if (maxslot > MSCSLOTS) 580 maxslot = MSCSLOTS; 581 582 msc = &mscdev[MSCSLOTUL(unit, 0)]; 583 584 newhead = msc->board->Common.CDHead; 585 bufpos = msc->board->Common.CDTail; 586 if (newhead != bufpos) { /* CD events in queue */ 587 /* set interrupt priority level */ 588 s = spltty(); 589 ocd = msc->board->Common.CDStatus; /* get old status bits */ 590 while (newhead != bufpos) { /* read all events */ 591 ncd = msc->board->CDBuf[bufpos++]; /* get one event */ 592 ccd = ncd ^ ocd; /* mask of changed lines*/ 593 ocd = ncd; /* save new status bits */ 594 #if DEBUG_CD 595 printf("ocd %02x ncd %02x ccd %02x\n", ocd, ncd, ccd); 596 #endif 597 for(i = 0; i < NUMLINES; i++) { /* do for all lines */ 598 if (ccd & 1) { /* this one changed */ 599 msc = &mscdev[MSCSLOTUL(unit, i)]; 600 if (ncd & 1) { /* CD is now OFF */ 601 #if DEBUG_CD 602 printf("msc%d: CD OFF %d\n", unit, msc->port); 603 #endif 604 msc->flags &= ~TIOCM_CD; 605 if ((tp = msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, i))]) && 606 (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 607 608 #ifndef MSCCDHACK 609 if (MSCDIALIN(tp->t_dev)) 610 #endif 611 { 612 if (tp->t_linesw->l_modem(tp, 0) == 0) { 613 /* clear RTS and DTR, bitbucket output */ 614 ms = &msc->board->Status[msc->port]; 615 ms->Command = (ms->Command & ~MSCCMD_CMask) | 616 MSCCMD_Close; 617 ms->Setup = TRUE; 618 msc->flags &= ~(TIOCM_DTR | TIOCM_RTS); 619 ms->OutFlush = TRUE; 620 } 621 } 622 } 623 } else { /* CD is now ON */ 624 #if DEBUG_CD 625 printf("msc%d: CD ON %d\n", unit, msc->port); 626 #endif 627 msc->flags |= TIOCM_CD; 628 if ((tp = msc_tty[MSCTTYSLOT(MSCSLOTUL(unit, i))]) && 629 (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 630 if (MSCDIALIN(tp->t_dev)) 631 tp->t_linesw->l_modem(tp, 1); 632 } /* if tp valid and port open */ 633 } /* CD on/off */ 634 } /* if CD changed for this line */ 635 ccd >>= 1; ncd >>= 1; /* bit for next line */ 636 } /* for every line */ 637 } /* while events in queue */ 638 msc->board->Common.CDStatus = ocd; /* save new status */ 639 msc->board->Common.CDTail = bufpos; /* remove events */ 640 splx(s); 641 } /* if events in CD queue */ 642 643 for (slot = MSCSLOTUL(unit, 0); slot < maxslot; slot++) { 644 msc = &mscdev[slot]; 645 646 if (!msc->active) 647 continue; 648 649 tp = msc_tty[MSCTTYSLOT(slot)]; 650 ms = &msc->board->Status[msc->port]; 651 652 newhead = ms->InHead; /* 65c02 write pointer */ 653 654 /* yoohoo, is the port open? */ 655 if (tp && (tp->t_state & TS_ISOPEN) && tp->t_wopen == 0) { 656 /* port is open, handle all type of events */ 657 658 /* set interrupt priority level */ 659 s = spltty(); 660 661 /* check for input for this port */ 662 if (newhead != (bufpos = ms->InTail)) { 663 /* buffer for input chars/events */ 664 ibuf = &msc->board->InBuf[msc->port][0]; 665 666 /* data types of bytes in ibuf */ 667 cbuf = &msc->board->InCtl[msc->port][0]; 668 669 /* do for all chars, if room */ 670 while (bufpos != newhead) { 671 /* which type of input data? */ 672 switch (cbuf[bufpos]) { 673 /* input event (CD, BREAK, etc.) */ 674 case MSCINCTL_EVENT: 675 switch (ibuf[bufpos++]) { 676 case MSCEVENT_Break: 677 tp->t_linesw->l_rint(TTY_FE, tp); 678 break; 679 680 default: 681 printf("msc%d: unknown event type %d\n", 682 msc->unit, ibuf[(bufpos-1)&0xff]); 683 } /* event type switch */ 684 break; 685 686 case MSCINCTL_CHAR: 687 if (tp->t_state & TS_TBLOCK) { 688 goto NoRoomForYa; 689 } 690 tp->t_linesw->l_rint((int)ibuf[bufpos++], tp); 691 break; 692 693 default: 694 printf("msc%d: unknown data type %d\n", 695 msc->unit, cbuf[bufpos]); 696 bufpos++; 697 } /* switch on input data type */ 698 } /* while there's something in the buffer */ 699 NoRoomForYa: 700 ms->InTail = bufpos; /* tell 65C02 what we've read */ 701 } /* if there was something in the buffer */ 702 703 /* we get here only when the port is open */ 704 /* send output */ 705 if (tp->t_state & (TS_BUSY|TS_FLUSH)) { 706 707 bufpos = ms->OutHead - ms->OutTail; 708 709 /* busy and below low water mark? */ 710 if (tp->t_state & TS_BUSY) { 711 if (bufpos < IOBUFLOWWATER) { 712 tp->t_state &= ~TS_BUSY; /* not busy any more */ 713 if (tp->t_linesw) 714 tp->t_linesw->l_start(tp); 715 else 716 mscstart(tp); 717 } 718 } 719 720 /* waiting for flush and buffer empty? */ 721 if (tp->t_state & TS_FLUSH) { 722 if (bufpos == 0) 723 tp->t_state &= ~TS_FLUSH; /* finished flushing */ 724 } 725 } /* BUSY or FLUSH */ 726 727 splx(s); 728 729 } else { /* End of port open */ 730 /* port is closed, don't pass on the chars from it */ 731 732 /* check for input for this port */ 733 if (newhead != (bufpos = ms->InTail)) { 734 /* buffer for input chars/events */ 735 ibuf = &msc->board->InBuf[msc->port][0]; 736 737 /* data types of bytes in ibuf */ 738 cbuf = &msc->board->InCtl[msc->port][0]; 739 740 /* do for all chars, if room */ 741 while (bufpos != newhead) { 742 /* which type of input data? */ 743 switch (cbuf[bufpos]) { 744 /* input event (BREAK, etc.) */ 745 case MSCINCTL_EVENT: 746 switch (ibuf[bufpos++]) { 747 default: 748 printf("msc: unknown event type %d\n", 749 ibuf[(bufpos-1)&0xff]); 750 } /* event type switch */ 751 break; 752 753 default: 754 bufpos++; 755 } /* switch on input data type */ 756 } /* while there's something in the buffer */ 757 758 ms->InTail = bufpos; /* tell 65C02 what we've read */ 759 } /* if there was something in the buffer */ 760 } /* End of port open/close */ 761 762 /* is this port closing? */ 763 if (msc->closing) { 764 /* if DTR is off, just bitbucket remaining characters */ 765 if ( (msc->flags & TIOCM_DTR) == 0) { 766 ms->OutFlush = TRUE; 767 msc->closing = FALSE; 768 } 769 /* if output has drained, drop DTR */ 770 else if (ms->OutHead == ms->OutTail) { 771 (void) mscmctl(tp->t_dev, 0, DMSET); 772 msc->closing = FALSE; 773 } 774 } 775 } /* For all ports */ 776 } 777 778 779 int 780 mscioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) 781 { 782 register struct tty *tp; 783 register int slot; 784 register int error; 785 struct mscdevice *msc; 786 volatile struct mscstatus *ms; 787 int s; 788 789 /* get the device structure */ 790 slot = MSCSLOT(dev); 791 792 if (slot >= MSCSLOTS) 793 return ENXIO; 794 795 msc = &mscdev[slot]; 796 797 if (!msc->active) 798 return ENXIO; 799 800 ms = &msc->board->Status[msc->port]; 801 if (!(tp = msc_tty[MSCTTY(dev)])) 802 return ENXIO; 803 804 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p); 805 if (error != EPASSTHROUGH) 806 return (error); 807 808 error = ttioctl(tp, cmd, data, flag, p); 809 if (error != EPASSTHROUGH) 810 return (error); 811 812 switch (cmd) { 813 814 /* send break */ 815 case TIOCSBRK: 816 s = spltty(); 817 ms->Command = (ms->Command & (~MSCCMD_RTSMask)) | MSCCMD_Break; 818 ms->Setup = TRUE; 819 splx(s); 820 break; 821 822 /* clear break */ 823 case TIOCCBRK: 824 s = spltty(); 825 ms->Command = (ms->Command & (~MSCCMD_RTSMask)) | MSCCMD_RTSOn; 826 ms->Setup = TRUE; 827 splx(s); 828 break; 829 830 case TIOCSDTR: 831 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 832 break; 833 834 case TIOCCDTR: 835 if (!MSCDIALIN(dev)) /* don't let dialins drop DTR */ 836 (void) mscmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 837 break; 838 839 case TIOCMSET: 840 (void) mscmctl(dev, *(int *)data, DMSET); 841 break; 842 843 case TIOCMBIS: 844 (void) mscmctl(dev, *(int *)data, DMBIS); 845 break; 846 847 case TIOCMBIC: 848 if (MSCDIALIN(dev)) /* don't let dialins drop DTR */ 849 (void) mscmctl(dev, *(int *)data & TIOCM_DTR, DMBIC); 850 else 851 (void) mscmctl(dev, *(int *)data, DMBIC); 852 break; 853 854 case TIOCMGET: 855 *(int *)data = mscmctl(dev, 0, DMGET); 856 break; 857 858 case TIOCGFLAGS: 859 *(int *)data = SWFLAGS(dev); 860 break; 861 862 case TIOCSFLAGS: 863 error = suser(p->p_ucred, &p->p_acflag); 864 if (error != 0) 865 return(EPERM); 866 msc->openflags = *(int *)data; 867 /* only allow valid flags */ 868 msc->openflags &= 869 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 870 break; 871 872 default: 873 return (EPASSTHROUGH); 874 } 875 876 return (0); 877 } 878 879 880 int 881 mscparam(register struct tty *tp, register struct termios *t) 882 { 883 register int cflag = t->c_cflag; 884 struct mscdevice *msc; 885 volatile struct mscstatus *ms; 886 int s, slot; 887 int ospeed = ttspeedtab(t->c_ospeed, mscspeedtab); 888 889 /* get the device structure */ 890 slot = MSCSLOT(tp->t_dev); 891 892 if (slot >= MSCSLOTS) 893 return ENXIO; 894 895 msc = &mscdev[slot]; 896 897 if (!msc->active) 898 return ENXIO; 899 900 ms = &msc->board->Status[msc->port]; 901 902 /* check requested parameters */ 903 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 904 return (EINVAL); 905 906 /* and copy to tty */ 907 tp->t_ispeed = t->c_ispeed; 908 tp->t_ospeed = t->c_ospeed; 909 tp->t_cflag = cflag; 910 911 /* hang up if baud is zero */ 912 if (t->c_ospeed == 0) { 913 if (!MSCDIALIN(tp->t_dev)) /* don't let dialins drop DTR */ 914 (void) mscmctl(tp->t_dev, 0, DMSET); 915 } else { 916 /* set the baud rate */ 917 s = spltty(); 918 ms->Param = (ms->Param & ~MSCPARAM_BaudMask) | ospeed | MSCPARAM_RcvBaud; 919 920 /* 921 * Make sure any previous hangup is undone, ie. reenable DTR. 922 * also mscmctl will cause the speed to be set 923 */ 924 (void) mscmctl (tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 925 926 splx(s); 927 } 928 929 return(0); 930 } 931 932 933 /* 934 * Jukka's code initializes alot of stuff that other drivers don't 935 * I'm including it here so that this code is a common set of work 936 * done by both of us. rfh 937 */ 938 int 939 mschwiflow(struct tty *tp, int flag) 940 { 941 942 /* Rob's version */ 943 #if 1 944 if (flag) 945 mscmctl( tp->t_dev, TIOCM_RTS, DMBIC); /* Clear/Lower RTS */ 946 else 947 mscmctl( tp->t_dev, TIOCM_RTS, DMBIS); /* Set/Raise RTS */ 948 949 #else /* Jukka's version */ 950 951 int s, slot; 952 struct mscdevice *msc; 953 volatile struct mscstatus *ms; 954 955 /* get the device structure */ 956 slot = MSCSLOT(tp->t_dev); 957 if (slot >= MSCSLOTS) 958 return ENXIO; 959 msc = &mscdev[slot]; 960 if (!msc->active) 961 return ENXIO; 962 ms = &msc->board->Status[msc->port]; 963 964 /* Well, we should really _do_ something here, but the 65c02 code 965 * manages the RTS signal on its own now, so... This will probably 966 * change in the future. 967 */ 968 #endif 969 return 1; 970 } 971 972 973 void 974 mscstart(register struct tty *tp) 975 { 976 register int cc; 977 register char *cp; 978 register int mhead; 979 int s, slot; 980 struct mscdevice *msc; 981 volatile struct mscstatus *ms; 982 volatile char *mob; 983 int hiwat = 0; 984 int maxout; 985 986 if (! (tp->t_state & TS_ISOPEN)) 987 return; 988 989 slot = MSCSLOT(tp->t_dev); 990 991 #if 0 992 printf("starting msc%d\n", slot); 993 #endif 994 995 s = spltty(); 996 997 /* don't start if explicitly stopped */ 998 if (tp->t_state & (TS_TIMEOUT|TS_TTSTOP)) 999 goto out; 1000 1001 /* wake up if below low water */ 1002 cc = tp->t_outq.c_cc; 1003 1004 if (cc <= tp->t_lowat) { 1005 if (tp->t_state & TS_ASLEEP) { 1006 tp->t_state &= ~TS_ASLEEP; 1007 wakeup((caddr_t)&tp->t_outq); 1008 } 1009 selwakeup(&tp->t_wsel); 1010 } 1011 1012 /* don't bother if no characters or busy */ 1013 if (cc == 0 || (tp->t_state & TS_BUSY)) 1014 goto out; 1015 1016 /* 1017 * Limit the amount of output we do in one burst 1018 */ 1019 msc = &mscdev[slot]; 1020 ms = &msc->board->Status[msc->port]; 1021 mhead = ms->OutHead; 1022 maxout = mhead - ms->OutTail; 1023 1024 if (maxout < 0) 1025 maxout += IOBUFLEN; 1026 1027 maxout = IOBUFLEN - 1 - maxout; 1028 1029 if (cc >= maxout) { 1030 hiwat++; 1031 cc = maxout; 1032 } 1033 1034 cc = q_to_b (&tp->t_outq, msc->tmpbuf, cc); 1035 1036 if (cc > 0) { 1037 tp->t_state |= TS_BUSY; 1038 1039 mob = &msc->board->OutBuf[msc->port][0]; 1040 cp = &msc->tmpbuf[0]; 1041 1042 /* enable output */ 1043 ms->OutDisable = FALSE; 1044 1045 #if 0 1046 msc->tmpbuf[cc] = 0; 1047 printf("sending '%s'\n", msctmpbuf); 1048 #endif 1049 1050 /* send the first char across to reduce latency */ 1051 mob[mhead++] = *cp++; 1052 mhead &= IOBUFLENMASK; 1053 ms->OutHead = mhead; 1054 cc--; 1055 1056 /* copy the rest of the chars across quickly */ 1057 while (cc > 0) { 1058 mob[mhead++] = *cp++; 1059 mhead &= IOBUFLENMASK; 1060 cc--; 1061 } 1062 ms->OutHead = mhead; 1063 1064 /* leave the device busy if we've filled the buffer */ 1065 if (!hiwat) 1066 tp->t_state &= ~TS_BUSY; 1067 } 1068 1069 out: 1070 splx(s); 1071 } 1072 1073 1074 /* XXX */ 1075 /* 1076 * Stop output on a line. 1077 */ 1078 /*ARGSUSED*/ 1079 void 1080 mscstop(register struct tty *tp, int flag) 1081 /* flag variable defaulted to int anyway */ 1082 { 1083 register int s; 1084 #if 0 1085 struct mscdevice *msc; 1086 volatile struct mscstatus *ms; 1087 #endif 1088 1089 s = spltty(); 1090 if (tp->t_state & TS_BUSY) { 1091 if ((tp->t_state & TS_TTSTOP) == 0) { 1092 tp->t_state |= TS_FLUSH; 1093 #if 0 1094 msc = &mscdev[MSCSLOT(tp->t_dev)]; 1095 ms = &msc->board->Status[msc->port]; 1096 printf("stopped output on msc%d\n", MSCSLOT(tp->t_dev)); 1097 ms->OutDisable = TRUE; 1098 #endif 1099 } 1100 } 1101 splx(s); 1102 } 1103 1104 1105 /* 1106 * bits can be: TIOCM_DTR, TIOCM_RTS, TIOCM_CTS, TIOCM_CD, TIOCM_RI, TIOCM_DSR 1107 */ 1108 int 1109 mscmctl(dev_t dev, int bits, int how) 1110 { 1111 struct mscdevice *msc; 1112 volatile struct mscstatus *ms; 1113 int slot; 1114 int s; 1115 u_char newcmd; 1116 int OldFlags; 1117 1118 /* get the device structure */ 1119 slot = MSCSLOT(dev); 1120 1121 if (slot >= MSCSLOTS) 1122 return ENXIO; 1123 1124 msc = &mscdev[slot]; 1125 1126 if (!msc->active) 1127 return ENXIO; 1128 1129 s = spltty(); 1130 1131 if (how != DMGET) { 1132 OldFlags = msc->flags; 1133 bits &= TIOCM_DTR | TIOCM_RTS; /* can only modify DTR and RTS */ 1134 1135 switch (how) { 1136 case DMSET: 1137 msc->flags = (bits | (msc->flags & ~(TIOCM_DTR | TIOCM_RTS))); 1138 break; 1139 1140 case DMBIC: 1141 msc->flags &= ~bits; 1142 break; 1143 1144 case DMBIS: 1145 msc->flags |= bits; 1146 break; 1147 } 1148 1149 /* modify modem control state */ 1150 ms = &msc->board->Status[msc->port]; 1151 1152 if (msc->flags & TIOCM_RTS) /* was bits & */ 1153 newcmd = MSCCMD_RTSOn; 1154 else /* this doesn't actually work now */ 1155 newcmd = MSCCMD_RTSOff; 1156 1157 if (msc->flags & TIOCM_DTR) /* was bits & */ 1158 newcmd |= MSCCMD_Enable; 1159 1160 ms->Command = (ms->Command & (~MSCCMD_RTSMask & ~MSCCMD_Enable)) | newcmd; 1161 ms->Setup = TRUE; 1162 1163 /* if we've dropped DTR, bitbucket any pending output */ 1164 if ( (OldFlags & TIOCM_DTR) && ((bits & TIOCM_DTR) == 0)) 1165 ms->OutFlush = TRUE; 1166 } 1167 1168 bits = msc->flags; 1169 1170 (void) splx(s); 1171 1172 return(bits); 1173 } 1174 1175 1176 struct tty * 1177 msctty(dev_t dev) 1178 { 1179 return(msc_tty[MSCTTY(dev)]); 1180 } 1181 1182 1183 /* 1184 * Load JM's freely redistributable A2232 6502c code. Let turbo detector 1185 * run for a while too. 1186 */ 1187 1188 int 1189 mscinitcard(struct zbus_args *zap) 1190 { 1191 int bcount; 1192 short start; 1193 u_char *from; 1194 volatile u_char *to; 1195 volatile struct mscmemory *mlm; 1196 1197 mlm = (volatile struct mscmemory *)zap->va; 1198 (void)mlm->Enable6502Reset; 1199 1200 /* copy the code across to the board */ 1201 to = (u_char *)mlm; 1202 from = msc6502code; bcount = sizeof(msc6502code) - 2; 1203 start = *(short *)from; from += sizeof(start); 1204 to += start; 1205 1206 while(bcount--) *to++ = *from++; 1207 1208 mlm->Common.Crystal = MSC_UNKNOWN; /* use automatic speed check */ 1209 1210 /* start 6502 running */ 1211 (void)mlm->ResetBoard; 1212 1213 /* wait until speed detector has finished */ 1214 for (bcount = 0; bcount < 200; bcount++) { 1215 delay(10000); 1216 if (mlm->Common.Crystal) 1217 break; 1218 } 1219 1220 return(0); 1221 } 1222 1223 #endif /* NMSC > 0 */ 1224