mfc.c revision 1.13
1 /* $NetBSD: mfc.c,v 1.13 1996/06/06 04:47:33 mhitch Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Michael L. Hitch 5 * Copyright (c) 1982, 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/param.h> 38 #include <sys/systm.h> 39 #include <sys/kernel.h> 40 #include <sys/device.h> 41 #include <sys/tty.h> 42 #include <sys/proc.h> 43 #include <sys/file.h> 44 #include <sys/malloc.h> 45 #include <sys/uio.h> 46 #include <sys/kernel.h> 47 #include <sys/syslog.h> 48 #include <sys/queue.h> 49 #include <machine/cpu.h> 50 #include <amiga/amiga/device.h> 51 #include <amiga/amiga/isr.h> 52 #include <amiga/amiga/custom.h> 53 #include <amiga/amiga/cia.h> 54 #include <amiga/amiga/cc.h> 55 #include <amiga/dev/zbusvar.h> 56 57 #include <dev/cons.h> 58 59 #include <sys/conf.h> 60 #include <machine/conf.h> 61 62 #include "mfcs.h" 63 64 #ifndef SEROBUF_SIZE 65 #define SEROBUF_SIZE 128 66 #endif 67 #ifndef SERIBUF_SIZE 68 #define SERIBUF_SIZE 1024 69 #endif 70 71 #define splser() spl6() 72 73 /* 74 * 68581 DUART registers 75 */ 76 struct mfc_regs { 77 volatile u_char du_mr1a; 78 #define du_mr2a du_mr1a 79 u_char pad0; 80 volatile u_char du_csra; 81 #define du_sra du_csra 82 u_char pad2; 83 volatile u_char du_cra; 84 u_char pad4; 85 volatile u_char du_tba; 86 #define du_rba du_tba 87 u_char pad6; 88 volatile u_char du_acr; 89 #define du_ipcr du_acr 90 u_char pad8; 91 volatile u_char du_imr; 92 #define du_isr du_imr 93 u_char pad10; 94 volatile u_char du_ctur; 95 #define du_cmsb du_ctur 96 u_char pad12; 97 volatile u_char du_ctlr; 98 #define du_clsb du_ctlr 99 u_char pad14; 100 volatile u_char du_mr1b; 101 #define du_mr2b du_mr1b 102 u_char pad16; 103 volatile u_char du_csrb; 104 #define du_srb du_csrb 105 u_char pad18; 106 volatile u_char du_crb; 107 u_char pad20; 108 volatile u_char du_tbb; 109 #define du_rbb du_tbb 110 u_char pad22; 111 volatile u_char du_ivr; 112 u_char pad24; 113 volatile u_char du_opcr; 114 #define du_ip du_opcr 115 u_char pad26; 116 volatile u_char du_btst; 117 #define du_strc du_btst 118 u_char pad28; 119 volatile u_char du_btrst; 120 #define du_stpc du_btrst 121 u_char pad30; 122 }; 123 124 /* 125 * 68681 DUART serial port registers 126 */ 127 struct duart_regs { 128 volatile u_char ch_mr1; 129 #define ch_mr2 ch_mr1 130 u_char pad0; 131 volatile u_char ch_csr; 132 #define ch_sr ch_csr 133 u_char pad1; 134 volatile u_char ch_cr; 135 u_char pad2; 136 volatile u_char ch_tb; 137 #define ch_rb ch_tb 138 u_char pad3; 139 }; 140 141 struct mfc_softc { 142 struct device sc_dev; 143 struct isr sc_isr; 144 struct mfc_regs *sc_regs; 145 u_long clk_frq; 146 u_short ct_val; 147 u_char ct_usecnt; 148 u_char imask; 149 u_char mfc_iii; 150 u_char last_ip; 151 }; 152 153 #if NMFCS > 0 154 struct mfcs_softc { 155 struct device sc_dev; 156 struct tty *sc_tty; 157 struct duart_regs *sc_duart; 158 struct mfc_regs *sc_regs; 159 struct mfc_softc *sc_mfc; 160 int swflags; 161 long flags; /* XXX */ 162 #define CT_USED 1 /* CT in use */ 163 u_short *rptr, *wptr, incnt, ovfl; 164 u_short inbuf[SERIBUF_SIZE]; 165 char *ptr, *end; 166 char outbuf[SEROBUF_SIZE]; 167 struct vbl_node vbl_node; 168 }; 169 #endif 170 171 #if NMFCP > 0 172 struct mfcp_softc { 173 }; 174 #endif 175 176 struct mfc_args { 177 struct zbus_args zargs; 178 char *subdev; 179 char unit; 180 }; 181 182 int mfcprint __P((void *auxp, char *)); 183 void mfcattach __P((struct device *, struct device *, void *)); 184 int mfcmatch __P((struct device *, void *, void *)); 185 186 #if NMFCS > 0 187 int mfcsmatch __P((struct device *, void *, void *)); 188 void mfcsattach __P((struct device *, struct device *, void *)); 189 int mfcsparam __P(( struct tty *, struct termios *)); 190 int mfcshwiflow __P((struct tty *, int)); 191 void mfcsstart __P((struct tty *)); 192 int mfcsmctl __P((dev_t, int, int)); 193 void mfcsxintr __P((int)); 194 void mfcseint __P((int, int)); 195 void mfcsmint __P((register int)); 196 #endif 197 198 #if NMFCP > 0 199 void mfcpattach __P((struct device *, struct device *, void *)); 200 int mfcpmatch __P((struct device *, void *, void *)); 201 #endif 202 int mfcintr __P((void *)); 203 204 struct cfattach mfc_ca = { 205 sizeof(struct mfc_softc), mfcmatch, mfcattach 206 }; 207 208 struct cfdriver mfc_cd = { 209 NULL, "mfc", DV_DULL, NULL, 0 210 }; 211 212 #if NMFCS > 0 213 struct cfattach mfcs_ca = { 214 sizeof(struct mfcs_softc), mfcsmatch, mfcsattach 215 }; 216 217 struct cfdriver mfcs_cd = { 218 NULL, "mfcs", DV_TTY, NULL, 0 219 }; 220 #endif 221 222 #if NMFCP > 0 223 struct cfattach mfcp_ca = { 224 sizeof(struct mfcp_softc, mfcpmatch, mfcpattach 225 }; 226 227 struct cfdriver mfcp_cd = { 228 NULL, "mfcp", DV_DULL, NULL, 0 229 }; 230 #endif 231 232 233 int mfcs_active; 234 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 235 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 236 237 #ifdef notyet 238 /* 239 * MultiFaceCard III, II+ (not supported yet), and 240 * SerialMaster 500+ (not supported yet) 241 * baud rate tables for BRG set 1 [not used yet] 242 */ 243 244 struct speedtab mfcs3speedtab1[] = { 245 { 0, 0 }, 246 { 100, 0x00 }, 247 { 220, 0x11 }, 248 { 600, 0x44 }, 249 { 1200, 0x55 }, 250 { 2400, 0x66 }, 251 { 4800, 0x88 }, 252 { 9600, 0x99 }, 253 { 19200, 0xbb }, 254 { 115200, 0xcc }, 255 { -1, -1 } 256 }; 257 258 /* 259 * MultiFaceCard II, I, and SerialMaster 500 260 * baud rate tables for BRG set 1 [not used yet] 261 */ 262 263 struct speedtab mfcs2speedtab1[] = { 264 { 0, 0 }, 265 { 50, 0x00 }, 266 { 110, 0x11 }, 267 { 300, 0x44 }, 268 { 600, 0x55 }, 269 { 1200, 0x66 }, 270 { 2400, 0x88 }, 271 { 4800, 0x99 }, 272 { 9600, 0xbb }, 273 { 38400, 0xcc }, 274 { -1, -1 } 275 }; 276 #endif 277 278 /* 279 * MultiFaceCard III, II+ (not supported yet), and 280 * SerialMaster 500+ (not supported yet) 281 * baud rate tables for BRG set 2 282 */ 283 284 struct speedtab mfcs3speedtab2[] = { 285 { 0, 0 }, 286 { 150, 0x00 }, 287 { 200, 0x11 }, 288 { 300, 0x33 }, 289 { 600, 0x44 }, 290 { 1200, 0x55 }, 291 { 2400, 0x66 }, 292 { 4800, 0x88 }, 293 { 9600, 0x99 }, 294 { 19200, 0xbb }, 295 { 38400, 0xcc }, 296 { -1, -1 } 297 }; 298 299 /* 300 * MultiFaceCard II, I, and SerialMaster 500 301 * baud rate tables for BRG set 2 302 */ 303 304 struct speedtab mfcs2speedtab2[] = { 305 { 0, 0 }, 306 { 75, 0x00 }, 307 { 100, 0x11 }, 308 { 150, 0x33 }, 309 { 300, 0x44 }, 310 { 600, 0x55 }, 311 { 1200, 0x66 }, 312 { 2400, 0x88 }, 313 { 4800, 0x99 }, 314 { 9600, 0xbb }, 315 { 19200, 0xcc }, 316 { -1, -1 } 317 }; 318 319 /* 320 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 321 */ 322 int 323 mfcmatch(pdp, match, auxp) 324 struct device *pdp; 325 void *match, *auxp; 326 { 327 struct zbus_args *zap; 328 329 zap = auxp; 330 if (zap->manid == 2092 && 331 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 332 333 return(1); 334 return(0); 335 } 336 337 void 338 mfcattach(pdp, dp, auxp) 339 struct device *pdp, *dp; 340 void *auxp; 341 { 342 struct mfc_softc *scc; 343 struct zbus_args *zap; 344 struct mfc_args ma; 345 int unit; 346 struct mfc_regs *rp; 347 348 zap = auxp; 349 350 printf ("\n"); 351 352 scc = (struct mfc_softc *)dp; 353 unit = scc->sc_dev.dv_unit; 354 scc->sc_regs = rp = zap->va; 355 if (zap->prodid == 18) 356 scc->mfc_iii = 3; 357 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 358 359 rp->du_opcr = 0x00; /* configure output port? */ 360 rp->du_btrst = 0x0f; /* clear modem lines */ 361 rp->du_ivr = 0; /* IVR */ 362 rp->du_imr = 0; /* IMR */ 363 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 364 rp->du_ctur = 0; 365 rp->du_ctlr = 4; 366 rp->du_csra = 0xcc; /* clock select = 38400 */ 367 rp->du_cra = 0x10; /* reset mode register ptr */ 368 rp->du_cra = 0x20; 369 rp->du_cra = 0x30; 370 rp->du_cra = 0x40; 371 rp->du_mr1a = 0x93; /* MRA1 */ 372 rp->du_mr2a = 0x17; /* MRA2 */ 373 rp->du_csrb = 0xcc; /* clock select = 38400 */ 374 rp->du_crb = 0x10; /* reset mode register ptr */ 375 rp->du_crb = 0x20; 376 rp->du_crb = 0x30; 377 rp->du_crb = 0x40; 378 rp->du_mr1b = 0x93; /* MRB1 */ 379 rp->du_mr2b = 0x17; /* MRB2 */ 380 rp->du_cra = 0x05; /* enable A Rx & Tx */ 381 rp->du_crb = 0x05; /* enable B Rx & Tx */ 382 383 scc->sc_isr.isr_intr = mfcintr; 384 scc->sc_isr.isr_arg = scc; 385 scc->sc_isr.isr_ipl = 6; 386 add_isr(&scc->sc_isr); 387 388 /* configure ports */ 389 bcopy(zap, &ma.zargs, sizeof(struct zbus_args)); 390 ma.subdev = "mfcs"; 391 ma.unit = unit * 2; 392 config_found(dp, &ma, mfcprint); 393 ma.unit = unit * 2 + 1; 394 config_found(dp, &ma, mfcprint); 395 ma.subdev = "mfcp"; 396 ma.unit = unit; 397 config_found(dp, &ma, mfcprint); 398 } 399 400 /* 401 * 402 */ 403 int 404 mfcsmatch(pdp, match, auxp) 405 struct device *pdp; 406 void *match, *auxp; 407 { 408 struct mfc_args *ma; 409 410 ma = auxp; 411 if (strcmp(ma->subdev, "mfcs") == 0) 412 return (1); 413 return (0); 414 } 415 416 void 417 mfcsattach(pdp, dp, auxp) 418 struct device *pdp, *dp; 419 void *auxp; 420 { 421 int unit; 422 struct mfcs_softc *sc; 423 struct mfc_softc *scc; 424 struct mfc_args *ma; 425 struct mfc_regs *rp; 426 427 sc = (struct mfcs_softc *) dp; 428 scc = (struct mfc_softc *) pdp; 429 ma = auxp; 430 431 if (dp) { 432 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 433 SEROBUF_SIZE); 434 alloc_sicallback(); 435 } 436 437 unit = ma->unit; 438 mfcs_active |= 1 << unit; 439 sc->rptr = sc->wptr = sc->inbuf; 440 sc->sc_mfc = scc; 441 sc->sc_regs = rp = scc->sc_regs; 442 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? &rp->du_mr1b : 443 &rp->du_mr1a); 444 /* 445 * should have only one vbl routine to handle all ports? 446 */ 447 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 448 sc->vbl_node.data = (void *) unit; 449 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 450 } 451 452 /* 453 * print diag if pnp is NULL else just extra 454 */ 455 int 456 mfcprint(auxp, pnp) 457 void *auxp; 458 char *pnp; 459 { 460 if (pnp == NULL) 461 return(UNCONF); 462 return(QUIET); 463 } 464 465 int 466 mfcsopen(dev, flag, mode, p) 467 dev_t dev; 468 int flag, mode; 469 struct proc *p; 470 { 471 struct tty *tp; 472 struct mfcs_softc *sc; 473 int unit, error, s; 474 475 error = 0; 476 unit = dev & 0x1f; 477 478 if (unit >= mfcs_cd.cd_ndevs || (mfcs_active & (1 << unit)) == 0) 479 return (ENXIO); 480 sc = mfcs_cd.cd_devs[unit]; 481 482 s = spltty(); 483 484 if (sc->sc_tty) 485 tp = sc->sc_tty; 486 else { 487 tp = sc->sc_tty = ttymalloc(); 488 tty_attach(tp); 489 } 490 491 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 492 tp->t_param = mfcsparam; 493 tp->t_dev = dev; 494 tp->t_hwiflow = mfcshwiflow; 495 496 if ((tp->t_state & TS_ISOPEN) == 0) { 497 tp->t_state |= TS_WOPEN; 498 ttychars(tp); 499 if (tp->t_ispeed == 0) { 500 /* 501 * only when cleared do we reset to defaults. 502 */ 503 tp->t_iflag = TTYDEF_IFLAG; 504 tp->t_oflag = TTYDEF_OFLAG; 505 tp->t_cflag = TTYDEF_CFLAG; 506 tp->t_lflag = TTYDEF_LFLAG; 507 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 508 } 509 /* 510 * do these all the time 511 */ 512 if (sc->swflags & TIOCFLAG_CLOCAL) 513 tp->t_cflag |= CLOCAL; 514 if (sc->swflags & TIOCFLAG_CRTSCTS) 515 tp->t_cflag |= CRTSCTS; 516 if (sc->swflags & TIOCFLAG_MDMBUF) 517 tp->t_cflag |= MDMBUF; 518 mfcsparam(tp, &tp->t_termios); 519 ttsetwater(tp); 520 521 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 522 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 523 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 524 tp->t_state |= TS_CARR_ON; 525 else 526 tp->t_state &= ~TS_CARR_ON; 527 } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) { 528 splx(s); 529 return(EBUSY); 530 } 531 532 /* 533 * if NONBLOCK requested, ignore carrier 534 */ 535 if (flag & O_NONBLOCK) 536 goto done; 537 538 /* 539 * block waiting for carrier 540 */ 541 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 542 tp->t_state |= TS_WOPEN; 543 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 544 TTIPRI | PCATCH, ttopen, 0); 545 if (error) { 546 splx(s); 547 return(error); 548 } 549 } 550 done: 551 /* This is a way to handle lost XON characters */ 552 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 553 tp->t_state &= ~TS_TTSTOP; 554 ttstart (tp); 555 } 556 557 splx(s); 558 /* 559 * Reset the tty pointer, as there could have been a dialout 560 * use of the tty with a dialin open waiting. 561 */ 562 tp->t_dev = dev; 563 return((*linesw[tp->t_line].l_open)(dev, tp)); 564 } 565 566 /*ARGSUSED*/ 567 int 568 mfcsclose(dev, flag, mode, p) 569 dev_t dev; 570 int flag, mode; 571 struct proc *p; 572 { 573 struct tty *tp; 574 int unit; 575 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 576 struct mfc_softc *scc= sc->sc_mfc; 577 578 unit = dev & 31; 579 580 tp = sc->sc_tty; 581 (*linesw[tp->t_line].l_close)(tp, flag); 582 sc->sc_duart->ch_cr = 0x70; /* stop break */ 583 584 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 585 scc->sc_regs->du_imr = scc->imask; 586 if (sc->flags & CT_USED) { 587 --scc->ct_usecnt; 588 sc->flags &= ~CT_USED; 589 } 590 591 /* 592 * If the device is closed, it's close, no matter whether we deal with 593 * modem control signals nor not. 594 */ 595 #if 0 596 if (tp->t_cflag & HUPCL || tp->t_state & TS_WOPEN || 597 (tp->t_state & TS_ISOPEN) == 0) 598 #endif 599 (void) mfcsmctl(dev, 0, DMSET); 600 ttyclose(tp); 601 #if not_yet 602 if (tp != &mfcs_cons) { 603 remove_vbl_function(&sc->vbl_node); 604 ttyfree(tp); 605 sc->sc_tty = (struct tty *) NULL; 606 } 607 #endif 608 return (0); 609 } 610 611 int 612 mfcsread(dev, uio, flag) 613 dev_t dev; 614 struct uio *uio; 615 int flag; 616 { 617 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 618 struct tty *tp = sc->sc_tty; 619 if (tp == NULL) 620 return(ENXIO); 621 return((*linesw[tp->t_line].l_read)(tp, uio, flag)); 622 } 623 624 int 625 mfcswrite(dev, uio, flag) 626 dev_t dev; 627 struct uio *uio; 628 int flag; 629 { 630 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 631 struct tty *tp = sc->sc_tty; 632 633 if (tp == NULL) 634 return(ENXIO); 635 return((*linesw[tp->t_line].l_write)(tp, uio, flag)); 636 } 637 638 struct tty * 639 mfcstty(dev) 640 dev_t dev; 641 { 642 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 643 644 return (sc->sc_tty); 645 } 646 647 int 648 mfcsioctl(dev, cmd, data, flag, p) 649 dev_t dev; 650 u_long cmd; 651 caddr_t data; 652 int flag; 653 struct proc *p; 654 { 655 register struct tty *tp; 656 register int error; 657 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 658 659 tp = sc->sc_tty; 660 if (!tp) 661 return ENXIO; 662 663 error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, data, flag, p); 664 if (error >= 0) 665 return(error); 666 667 error = ttioctl(tp, cmd, data, flag, p); 668 if (error >= 0) 669 return(error); 670 671 switch (cmd) { 672 case TIOCSBRK: 673 sc->sc_duart->ch_cr = 0x60; /* start break */ 674 break; 675 676 case TIOCCBRK: 677 sc->sc_duart->ch_cr = 0x70; /* stop break */ 678 break; 679 680 case TIOCSDTR: 681 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 682 break; 683 684 case TIOCCDTR: 685 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 686 break; 687 688 case TIOCMSET: 689 (void) mfcsmctl(dev, *(int *) data, DMSET); 690 break; 691 692 case TIOCMBIS: 693 (void) mfcsmctl(dev, *(int *) data, DMBIS); 694 break; 695 696 case TIOCMBIC: 697 (void) mfcsmctl(dev, *(int *) data, DMBIC); 698 break; 699 700 case TIOCMGET: 701 *(int *)data = mfcsmctl(dev, 0, DMGET); 702 break; 703 case TIOCGFLAGS: 704 *(int *)data = SWFLAGS(dev); 705 break; 706 case TIOCSFLAGS: 707 error = suser(p->p_ucred, &p->p_acflag); 708 if (error != 0) 709 return(EPERM); 710 711 sc->swflags = *(int *)data; 712 sc->swflags &= /* only allow valid flags */ 713 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 714 /* XXXX need to change duart parameters? */ 715 break; 716 default: 717 return(ENOTTY); 718 } 719 720 return(0); 721 } 722 723 int 724 mfcsparam(tp, t) 725 struct tty *tp; 726 struct termios *t; 727 { 728 int cflag, unit, ospeed; 729 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 730 struct mfc_softc *scc= sc->sc_mfc; 731 732 cflag = t->c_cflag; 733 unit = tp->t_dev & 31; 734 if (sc->flags & CT_USED) { 735 --scc->ct_usecnt; 736 sc->flags &= ~CT_USED; 737 } 738 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 739 mfcs2speedtab2); 740 741 /* 742 * If Baud Rate Generator can't generate requested speed, 743 * try to use the counter/timer. 744 */ 745 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 746 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 747 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 748 ospeed = -1; 749 else { 750 scc->sc_regs->du_ctur = ospeed >> 8; 751 scc->sc_regs->du_ctlr = ospeed; 752 scc->ct_val = ospeed; 753 ++scc->ct_usecnt; 754 sc->flags |= CT_USED; 755 ospeed = 0xdd; 756 } 757 } 758 /* XXXX 68681 duart could handle split speeds */ 759 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 760 return(EINVAL); 761 762 /* XXXX handle parity, character size, stop bits, flow control */ 763 764 /* 765 * copy to tty 766 */ 767 tp->t_ispeed = t->c_ispeed; 768 tp->t_ospeed = t->c_ospeed; 769 tp->t_cflag = cflag; 770 771 /* 772 * enable interrupts 773 */ 774 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 775 scc->sc_regs->du_imr = scc->imask; 776 #if defined(DEBUG) && 0 777 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 778 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 779 #endif 780 if (ospeed == 0) 781 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 782 else { 783 /* 784 * (re)enable DTR 785 * and set baud rate. (8 bit mode) 786 */ 787 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 788 sc->sc_duart->ch_csr = ospeed; 789 } 790 return(0); 791 } 792 793 int 794 mfcshwiflow(tp, flag) 795 struct tty *tp; 796 int flag; 797 { 798 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 799 int unit = tp->t_dev & 1; 800 801 if (flag) 802 sc->sc_regs->du_btrst = 1 << unit; 803 else 804 sc->sc_regs->du_btst = 1 << unit; 805 return 1; 806 } 807 808 void 809 mfcsstart(tp) 810 struct tty *tp; 811 { 812 int cc, s, unit; 813 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 814 struct mfc_softc *scc= sc->sc_mfc; 815 816 if ((tp->t_state & TS_ISOPEN) == 0) 817 return; 818 819 unit = tp->t_dev & 1; 820 821 s = splser(); 822 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 823 goto out; 824 825 cc = tp->t_outq.c_cc; 826 if (cc <= tp->t_lowat) { 827 if (tp->t_state & TS_ASLEEP) { 828 tp->t_state &= ~TS_ASLEEP; 829 wakeup((caddr_t) & tp->t_outq); 830 } 831 selwakeup(&tp->t_wsel); 832 } 833 if (cc == 0 || (tp->t_state & TS_BUSY)) 834 goto out; 835 836 /* 837 * We only do bulk transfers if using CTSRTS flow control, not for 838 * (probably sloooow) ixon/ixoff devices. 839 */ 840 if ((tp->t_cflag & CRTSCTS) == 0) 841 cc = 1; 842 843 /* 844 * Limit the amount of output we do in one burst 845 * to prevent hogging the CPU. 846 */ 847 if (cc > SEROBUF_SIZE) 848 cc = SEROBUF_SIZE; 849 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 850 if (cc > 0) { 851 tp->t_state |= TS_BUSY; 852 853 sc->ptr = sc->outbuf; 854 sc->end = sc->outbuf + cc; 855 856 /* 857 * Get first character out, then have TBE-interrupts blow out 858 * further characters, until buffer is empty, and TS_BUSY gets 859 * cleared. 860 */ 861 sc->sc_duart->ch_tb = *sc->ptr++; 862 scc->imask |= 1 << (unit * 4); 863 sc->sc_regs->du_imr = scc->imask; 864 } 865 out: 866 splx(s); 867 } 868 869 /* 870 * Stop output on a line. 871 */ 872 /*ARGSUSED*/ 873 int 874 mfcsstop(tp, flag) 875 struct tty *tp; 876 int flag; 877 { 878 int s; 879 880 s = splser(); 881 if (tp->t_state & TS_BUSY) { 882 if ((tp->t_state & TS_TTSTOP) == 0) 883 tp->t_state |= TS_FLUSH; 884 } 885 splx(s); 886 return 0; 887 } 888 889 int 890 mfcsmctl(dev, bits, how) 891 dev_t dev; 892 int bits, how; 893 { 894 int unit, s; 895 u_char ub = 0; 896 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 897 898 unit = dev & 1; 899 900 /* 901 * convert TIOCM* mask into CIA mask 902 * which is active low 903 */ 904 if (how != DMGET) { 905 /* 906 * need to save current state of DTR & RTS ? 907 */ 908 if (bits & TIOCM_DTR) 909 ub |= 0x04 << unit; 910 if (bits & TIOCM_RTS) 911 ub |= 0x01 << unit; 912 } 913 s = splser(); 914 switch (how) { 915 case DMSET: 916 sc->sc_regs->du_btst = ub; 917 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 918 break; 919 920 case DMBIC: 921 sc->sc_regs->du_btrst = ub; 922 ub = ~sc->sc_regs->du_ip; 923 break; 924 925 case DMBIS: 926 sc->sc_regs->du_btst = ub; 927 ub = ~sc->sc_regs->du_ip; 928 break; 929 930 case DMGET: 931 ub = ~sc->sc_regs->du_ip; 932 break; 933 } 934 (void)splx(s); 935 936 /* XXXX should keep DTR & RTS states in softc? */ 937 bits = TIOCM_DTR | TIOCM_RTS; 938 if (ub & (1 << unit)) 939 bits |= TIOCM_CTS; 940 if (ub & (4 << unit)) 941 bits |= TIOCM_DSR; 942 if (ub & (0x10 << unit)) 943 bits |= TIOCM_CD; 944 /* XXXX RI is not supported on all boards */ 945 if (sc->sc_regs->pad26 & (1 << unit)) 946 bits |= TIOCM_RI; 947 948 return(bits); 949 } 950 951 /* 952 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 953 */ 954 955 int 956 mfcintr(arg) 957 void *arg; 958 { 959 struct mfc_softc *scc = arg; 960 struct mfcs_softc *sc; 961 struct mfc_regs *regs; 962 struct tty *tp; 963 int istat, unit; 964 u_short c; 965 966 regs = scc->sc_regs; 967 istat = regs->du_isr & scc->imask; 968 if (istat == 0) 969 return (0); 970 unit = scc->sc_dev.dv_unit * 2; 971 if (istat & 0x02) { /* channel A receive interrupt */ 972 sc = mfcs_cd.cd_devs[unit]; 973 while (1) { 974 c = regs->du_sra << 8; 975 if ((c & 0x0100) == 0) 976 break; 977 c |= regs->du_rba; 978 if (sc->incnt == SERIBUF_SIZE) 979 ++sc->ovfl; 980 else { 981 *sc->wptr++ = c; 982 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 983 sc->wptr = sc->inbuf; 984 ++sc->incnt; 985 if (sc->incnt > SERIBUF_SIZE - 16) 986 regs->du_btrst = 1; 987 } 988 if (c & 0x1000) 989 regs->du_cra = 0x40; 990 } 991 } 992 if (istat & 0x20) { /* channel B receive interrupt */ 993 sc = mfcs_cd.cd_devs[unit + 1]; 994 while (1) { 995 c = regs->du_srb << 8; 996 if ((c & 0x0100) == 0) 997 break; 998 c |= regs->du_rbb; 999 if (sc->incnt == SERIBUF_SIZE) 1000 ++sc->ovfl; 1001 else { 1002 *sc->wptr++ = c; 1003 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 1004 sc->wptr = sc->inbuf; 1005 ++sc->incnt; 1006 if (sc->incnt > SERIBUF_SIZE - 16) 1007 regs->du_btrst = 2; 1008 } 1009 if (c & 0x1000) 1010 regs->du_crb = 0x40; 1011 } 1012 } 1013 if (istat & 0x01) { /* channel A transmit interrupt */ 1014 sc = mfcs_cd.cd_devs[unit]; 1015 tp = sc->sc_tty; 1016 if (sc->ptr == sc->end) { 1017 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1018 scc->imask &= ~0x01; 1019 regs->du_imr = scc->imask; 1020 add_sicallback (tp->t_line ? 1021 (sifunc_t)linesw[tp->t_line].l_start 1022 : (sifunc_t)mfcsstart, tp, NULL); 1023 1024 } 1025 else 1026 regs->du_tba = *sc->ptr++; 1027 } 1028 if (istat & 0x10) { /* channel B transmit interrupt */ 1029 sc = mfcs_cd.cd_devs[unit + 1]; 1030 tp = sc->sc_tty; 1031 if (sc->ptr == sc->end) { 1032 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1033 scc->imask &= ~0x10; 1034 regs->du_imr = scc->imask; 1035 add_sicallback (tp->t_line ? 1036 (sifunc_t)linesw[tp->t_line].l_start 1037 : (sifunc_t)mfcsstart, tp, NULL); 1038 } 1039 else 1040 regs->du_tbb = *sc->ptr++; 1041 } 1042 if (istat & 0x80) { /* input port change interrupt */ 1043 c = regs->du_ipcr; 1044 printf ("%s: ipcr %02x", scc->sc_dev.dv_xname, c); 1045 } 1046 return(1); 1047 } 1048 1049 void 1050 mfcsxintr(unit) 1051 int unit; 1052 { 1053 int s1, s2, ovfl; 1054 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1055 struct tty *tp = sc->sc_tty; 1056 1057 /* 1058 * Make sure we're not interrupted by another 1059 * vbl, but allow level6 ints 1060 */ 1061 s1 = spltty(); 1062 1063 /* 1064 * pass along any acumulated information 1065 * while input is not blocked 1066 */ 1067 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1068 /* 1069 * no collision with ser_fastint() 1070 */ 1071 mfcseint(unit, *sc->rptr++); 1072 1073 ovfl = 0; 1074 /* lock against mfcs_fastint() */ 1075 s2 = splser(); 1076 --sc->incnt; 1077 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1078 sc->rptr = sc->inbuf; 1079 if (sc->ovfl != 0) { 1080 ovfl = sc->ovfl; 1081 sc->ovfl = 0; 1082 } 1083 splx(s2); 1084 if (ovfl != 0) 1085 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1086 sc->sc_dev.dv_xname, ovfl); 1087 } 1088 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1089 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1090 } 1091 splx(s1); 1092 } 1093 1094 void 1095 mfcseint(unit, stat) 1096 int unit, stat; 1097 { 1098 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1099 struct tty *tp; 1100 u_char ch; 1101 int c; 1102 1103 tp = sc->sc_tty; 1104 ch = stat & 0xff; 1105 c = ch; 1106 1107 if ((tp->t_state & TS_ISOPEN) == 0) { 1108 #ifdef KGDB 1109 /* we don't care about parity errors */ 1110 if (kgdb_dev == makedev(sermajor, unit) && c == FRAME_END) 1111 kgdb_connect(0); /* trap into kgdb */ 1112 #endif 1113 return; 1114 } 1115 1116 /* 1117 * Check for break and (if enabled) parity error. 1118 */ 1119 if (stat & 0xc000) 1120 c |= TTY_FE; 1121 else if (stat & 0x2000) 1122 c |= TTY_PE; 1123 1124 if (stat & 0x1000) 1125 log(LOG_WARNING, "%s: fifo overflow\n", 1126 ((struct mfcs_softc *)mfcs_cd.cd_devs[unit])->sc_dev.dv_xname); 1127 1128 (*linesw[tp->t_line].l_rint)(c, tp); 1129 } 1130 1131 /* 1132 * This interrupt is periodically invoked in the vertical blank 1133 * interrupt. It's used to keep track of the modem control lines 1134 * and (new with the fast_int code) to move accumulated data 1135 * up into the tty layer. 1136 */ 1137 void 1138 mfcsmint(unit) 1139 int unit; 1140 { 1141 struct tty *tp; 1142 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1143 u_char stat, last, istat; 1144 1145 tp = sc->sc_tty; 1146 if (!tp) 1147 return; 1148 1149 if ((tp->t_state & (TS_ISOPEN | TS_WOPEN)) == 0) { 1150 sc->rptr = sc->wptr = sc->inbuf; 1151 sc->incnt = 0; 1152 return; 1153 } 1154 /* 1155 * empty buffer 1156 */ 1157 mfcsxintr(unit); 1158 1159 stat = ~sc->sc_regs->du_ip; 1160 last = sc->sc_mfc->last_ip; 1161 sc->sc_mfc->last_ip = stat; 1162 1163 /* 1164 * check whether any interesting signal changed state 1165 */ 1166 istat = stat ^ last; 1167 1168 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1169 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1170 if (stat & (0x10 << (unit & 1))) 1171 (*linesw[tp->t_line].l_modem)(tp, 1); 1172 else if ((*linesw[tp->t_line].l_modem)(tp, 0) == 0) { 1173 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1174 } 1175 } 1176 } 1177
Indexes created Mon Sep 22 10:09:38 GMT 2025