mfc.c revision 1.22
1 /* $NetBSD: mfc.c,v 1.22 2001/01/13 02:09:27 aymeric 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, const char *)); 183 void mfcattach __P((struct device *, struct device *, void *)); 184 int mfcmatch __P((struct device *, struct cfdata *, void *)); 185 186 #if NMFCS > 0 187 int mfcsmatch __P((struct device *, struct cfdata *, 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 *, struct cfdata *, void *)); 201 #endif 202 int mfcintr __P((void *)); 203 204 struct cfattach mfc_ca = { 205 sizeof(struct mfc_softc), mfcmatch, mfcattach 206 }; 207 208 #if NMFCS > 0 209 struct cfattach mfcs_ca = { 210 sizeof(struct mfcs_softc), mfcsmatch, mfcsattach 211 }; 212 213 extern struct cfdriver mfcs_cd; 214 #endif 215 216 #if NMFCP > 0 217 struct cfattach mfcp_ca = { 218 sizeof(struct mfcp_softc, mfcpmatch, mfcpattach 219 }; 220 #endif 221 222 223 int mfcs_active; 224 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 225 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 226 227 #ifdef notyet 228 /* 229 * MultiFaceCard III, II+ (not supported yet), and 230 * SerialMaster 500+ (not supported yet) 231 * baud rate tables for BRG set 1 [not used yet] 232 */ 233 234 struct speedtab mfcs3speedtab1[] = { 235 { 0, 0 }, 236 { 100, 0x00 }, 237 { 220, 0x11 }, 238 { 600, 0x44 }, 239 { 1200, 0x55 }, 240 { 2400, 0x66 }, 241 { 4800, 0x88 }, 242 { 9600, 0x99 }, 243 { 19200, 0xbb }, 244 { 115200, 0xcc }, 245 { -1, -1 } 246 }; 247 248 /* 249 * MultiFaceCard II, I, and SerialMaster 500 250 * baud rate tables for BRG set 1 [not used yet] 251 */ 252 253 struct speedtab mfcs2speedtab1[] = { 254 { 0, 0 }, 255 { 50, 0x00 }, 256 { 110, 0x11 }, 257 { 300, 0x44 }, 258 { 600, 0x55 }, 259 { 1200, 0x66 }, 260 { 2400, 0x88 }, 261 { 4800, 0x99 }, 262 { 9600, 0xbb }, 263 { 38400, 0xcc }, 264 { -1, -1 } 265 }; 266 #endif 267 268 /* 269 * MultiFaceCard III, II+ (not supported yet), and 270 * SerialMaster 500+ (not supported yet) 271 * baud rate tables for BRG set 2 272 */ 273 274 struct speedtab mfcs3speedtab2[] = { 275 { 0, 0 }, 276 { 150, 0x00 }, 277 { 200, 0x11 }, 278 { 300, 0x33 }, 279 { 600, 0x44 }, 280 { 1200, 0x55 }, 281 { 2400, 0x66 }, 282 { 4800, 0x88 }, 283 { 9600, 0x99 }, 284 { 19200, 0xbb }, 285 { 38400, 0xcc }, 286 { -1, -1 } 287 }; 288 289 /* 290 * MultiFaceCard II, I, and SerialMaster 500 291 * baud rate tables for BRG set 2 292 */ 293 294 struct speedtab mfcs2speedtab2[] = { 295 { 0, 0 }, 296 { 75, 0x00 }, 297 { 100, 0x11 }, 298 { 150, 0x33 }, 299 { 300, 0x44 }, 300 { 600, 0x55 }, 301 { 1200, 0x66 }, 302 { 2400, 0x88 }, 303 { 4800, 0x99 }, 304 { 9600, 0xbb }, 305 { 19200, 0xcc }, 306 { -1, -1 } 307 }; 308 309 /* 310 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 311 */ 312 int 313 mfcmatch(pdp, cfp, auxp) 314 struct device *pdp; 315 struct cfdata *cfp; 316 void *auxp; 317 { 318 struct zbus_args *zap; 319 320 zap = auxp; 321 if (zap->manid == 2092 && 322 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 323 324 return(1); 325 return(0); 326 } 327 328 void 329 mfcattach(pdp, dp, auxp) 330 struct device *pdp, *dp; 331 void *auxp; 332 { 333 struct mfc_softc *scc; 334 struct zbus_args *zap; 335 struct mfc_args ma; 336 int unit; 337 struct mfc_regs *rp; 338 339 zap = auxp; 340 341 printf ("\n"); 342 343 scc = (struct mfc_softc *)dp; 344 unit = scc->sc_dev.dv_unit; 345 scc->sc_regs = rp = zap->va; 346 if (zap->prodid == 18) 347 scc->mfc_iii = 3; 348 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 349 350 rp->du_opcr = 0x00; /* configure output port? */ 351 rp->du_btrst = 0x0f; /* clear modem lines */ 352 rp->du_ivr = 0; /* IVR */ 353 rp->du_imr = 0; /* IMR */ 354 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 355 rp->du_ctur = 0; 356 rp->du_ctlr = 4; 357 rp->du_csra = 0xcc; /* clock select = 38400 */ 358 rp->du_cra = 0x10; /* reset mode register ptr */ 359 rp->du_cra = 0x20; 360 rp->du_cra = 0x30; 361 rp->du_cra = 0x40; 362 rp->du_mr1a = 0x93; /* MRA1 */ 363 rp->du_mr2a = 0x17; /* MRA2 */ 364 rp->du_csrb = 0xcc; /* clock select = 38400 */ 365 rp->du_crb = 0x10; /* reset mode register ptr */ 366 rp->du_crb = 0x20; 367 rp->du_crb = 0x30; 368 rp->du_crb = 0x40; 369 rp->du_mr1b = 0x93; /* MRB1 */ 370 rp->du_mr2b = 0x17; /* MRB2 */ 371 rp->du_cra = 0x05; /* enable A Rx & Tx */ 372 rp->du_crb = 0x05; /* enable B Rx & Tx */ 373 374 scc->sc_isr.isr_intr = mfcintr; 375 scc->sc_isr.isr_arg = scc; 376 scc->sc_isr.isr_ipl = 6; 377 add_isr(&scc->sc_isr); 378 379 /* configure ports */ 380 bcopy(zap, &ma.zargs, sizeof(struct zbus_args)); 381 ma.subdev = "mfcs"; 382 ma.unit = unit * 2; 383 config_found(dp, &ma, mfcprint); 384 ma.unit = unit * 2 + 1; 385 config_found(dp, &ma, mfcprint); 386 ma.subdev = "mfcp"; 387 ma.unit = unit; 388 config_found(dp, &ma, mfcprint); 389 } 390 391 /* 392 * 393 */ 394 int 395 mfcsmatch(pdp, cfp, auxp) 396 struct device *pdp; 397 struct cfdata *cfp; 398 void *auxp; 399 { 400 struct mfc_args *ma; 401 402 ma = auxp; 403 if (strcmp(ma->subdev, "mfcs") == 0) 404 return (1); 405 return (0); 406 } 407 408 void 409 mfcsattach(pdp, dp, auxp) 410 struct device *pdp, *dp; 411 void *auxp; 412 { 413 int unit; 414 struct mfcs_softc *sc; 415 struct mfc_softc *scc; 416 struct mfc_args *ma; 417 struct mfc_regs *rp; 418 419 sc = (struct mfcs_softc *) dp; 420 scc = (struct mfc_softc *) pdp; 421 ma = auxp; 422 423 if (dp) { 424 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 425 SEROBUF_SIZE); 426 alloc_sicallback(); 427 } 428 429 unit = ma->unit; 430 mfcs_active |= 1 << unit; 431 sc->rptr = sc->wptr = sc->inbuf; 432 sc->sc_mfc = scc; 433 sc->sc_regs = rp = scc->sc_regs; 434 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? &rp->du_mr1b : 435 &rp->du_mr1a); 436 /* 437 * should have only one vbl routine to handle all ports? 438 */ 439 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 440 sc->vbl_node.data = (void *) unit; 441 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 442 } 443 444 /* 445 * print diag if pnp is NULL else just extra 446 */ 447 int 448 mfcprint(auxp, pnp) 449 void *auxp; 450 const char *pnp; 451 { 452 if (pnp == NULL) 453 return(UNCONF); 454 return(QUIET); 455 } 456 457 int 458 mfcsopen(dev, flag, mode, p) 459 dev_t dev; 460 int flag, mode; 461 struct proc *p; 462 { 463 struct tty *tp; 464 struct mfcs_softc *sc; 465 int unit, error, s; 466 467 error = 0; 468 unit = dev & 0x1f; 469 470 if (unit >= mfcs_cd.cd_ndevs || (mfcs_active & (1 << unit)) == 0) 471 return (ENXIO); 472 sc = mfcs_cd.cd_devs[unit]; 473 474 s = spltty(); 475 476 if (sc->sc_tty) 477 tp = sc->sc_tty; 478 else { 479 tp = sc->sc_tty = ttymalloc(); 480 tty_attach(tp); 481 } 482 483 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 484 tp->t_param = mfcsparam; 485 tp->t_dev = dev; 486 tp->t_hwiflow = mfcshwiflow; 487 488 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 489 ttychars(tp); 490 if (tp->t_ispeed == 0) { 491 /* 492 * only when cleared do we reset to defaults. 493 */ 494 tp->t_iflag = TTYDEF_IFLAG; 495 tp->t_oflag = TTYDEF_OFLAG; 496 tp->t_cflag = TTYDEF_CFLAG; 497 tp->t_lflag = TTYDEF_LFLAG; 498 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 499 } 500 /* 501 * do these all the time 502 */ 503 if (sc->swflags & TIOCFLAG_CLOCAL) 504 tp->t_cflag |= CLOCAL; 505 if (sc->swflags & TIOCFLAG_CRTSCTS) 506 tp->t_cflag |= CRTSCTS; 507 if (sc->swflags & TIOCFLAG_MDMBUF) 508 tp->t_cflag |= MDMBUF; 509 mfcsparam(tp, &tp->t_termios); 510 ttsetwater(tp); 511 512 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 513 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 514 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 515 tp->t_state |= TS_CARR_ON; 516 else 517 tp->t_state &= ~TS_CARR_ON; 518 } else if (tp->t_state & TS_XCLUDE && p->p_ucred->cr_uid != 0) { 519 splx(s); 520 return(EBUSY); 521 } 522 523 /* 524 * if NONBLOCK requested, ignore carrier 525 */ 526 if (flag & O_NONBLOCK) 527 goto done; 528 529 /* 530 * block waiting for carrier 531 */ 532 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 533 tp->t_wopen++; 534 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 535 TTIPRI | PCATCH, ttopen, 0); 536 tp->t_wopen--; 537 if (error) { 538 splx(s); 539 return(error); 540 } 541 } 542 done: 543 /* This is a way to handle lost XON characters */ 544 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 545 tp->t_state &= ~TS_TTSTOP; 546 ttstart (tp); 547 } 548 549 splx(s); 550 /* 551 * Reset the tty pointer, as there could have been a dialout 552 * use of the tty with a dialin open waiting. 553 */ 554 tp->t_dev = dev; 555 return tp->t_linesw->l_open(dev, tp); 556 } 557 558 /*ARGSUSED*/ 559 int 560 mfcsclose(dev, flag, mode, p) 561 dev_t dev; 562 int flag, mode; 563 struct proc *p; 564 { 565 struct tty *tp; 566 int unit; 567 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 568 struct mfc_softc *scc= sc->sc_mfc; 569 570 unit = dev & 31; 571 572 tp = sc->sc_tty; 573 tp->t_linesw->l_close(tp, flag); 574 sc->sc_duart->ch_cr = 0x70; /* stop break */ 575 576 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 577 scc->sc_regs->du_imr = scc->imask; 578 if (sc->flags & CT_USED) { 579 --scc->ct_usecnt; 580 sc->flags &= ~CT_USED; 581 } 582 583 /* 584 * If the device is closed, it's close, no matter whether we deal with 585 * modem control signals nor not. 586 */ 587 #if 0 588 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 589 (tp->t_state & TS_ISOPEN) == 0) 590 #endif 591 (void) mfcsmctl(dev, 0, DMSET); 592 ttyclose(tp); 593 #if not_yet 594 if (tp != &mfcs_cons) { 595 remove_vbl_function(&sc->vbl_node); 596 ttyfree(tp); 597 sc->sc_tty = (struct tty *) NULL; 598 } 599 #endif 600 return (0); 601 } 602 603 int 604 mfcsread(dev, uio, flag) 605 dev_t dev; 606 struct uio *uio; 607 int flag; 608 { 609 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 610 struct tty *tp = sc->sc_tty; 611 if (tp == NULL) 612 return(ENXIO); 613 return tp->t_linesw->l_read(tp, uio, flag); 614 } 615 616 int 617 mfcswrite(dev, uio, flag) 618 dev_t dev; 619 struct uio *uio; 620 int flag; 621 { 622 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 623 struct tty *tp = sc->sc_tty; 624 625 if (tp == NULL) 626 return(ENXIO); 627 return tp->t_linesw->l_write(tp, uio, flag); 628 } 629 630 struct tty * 631 mfcstty(dev) 632 dev_t dev; 633 { 634 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 635 636 return (sc->sc_tty); 637 } 638 639 int 640 mfcsioctl(dev, cmd, data, flag, p) 641 dev_t dev; 642 u_long cmd; 643 caddr_t data; 644 int flag; 645 struct proc *p; 646 { 647 register struct tty *tp; 648 register int error; 649 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 650 651 tp = sc->sc_tty; 652 if (!tp) 653 return ENXIO; 654 655 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, p); 656 if (error >= 0) 657 return(error); 658 659 error = ttioctl(tp, cmd, data, flag, p); 660 if (error >= 0) 661 return(error); 662 663 switch (cmd) { 664 case TIOCSBRK: 665 sc->sc_duart->ch_cr = 0x60; /* start break */ 666 break; 667 668 case TIOCCBRK: 669 sc->sc_duart->ch_cr = 0x70; /* stop break */ 670 break; 671 672 case TIOCSDTR: 673 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 674 break; 675 676 case TIOCCDTR: 677 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 678 break; 679 680 case TIOCMSET: 681 (void) mfcsmctl(dev, *(int *) data, DMSET); 682 break; 683 684 case TIOCMBIS: 685 (void) mfcsmctl(dev, *(int *) data, DMBIS); 686 break; 687 688 case TIOCMBIC: 689 (void) mfcsmctl(dev, *(int *) data, DMBIC); 690 break; 691 692 case TIOCMGET: 693 *(int *)data = mfcsmctl(dev, 0, DMGET); 694 break; 695 case TIOCGFLAGS: 696 *(int *)data = SWFLAGS(dev); 697 break; 698 case TIOCSFLAGS: 699 error = suser(p->p_ucred, &p->p_acflag); 700 if (error != 0) 701 return(EPERM); 702 703 sc->swflags = *(int *)data; 704 sc->swflags &= /* only allow valid flags */ 705 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 706 /* XXXX need to change duart parameters? */ 707 break; 708 default: 709 return(ENOTTY); 710 } 711 712 return(0); 713 } 714 715 int 716 mfcsparam(tp, t) 717 struct tty *tp; 718 struct termios *t; 719 { 720 int cflag, unit, ospeed; 721 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 722 struct mfc_softc *scc= sc->sc_mfc; 723 724 cflag = t->c_cflag; 725 unit = tp->t_dev & 31; 726 if (sc->flags & CT_USED) { 727 --scc->ct_usecnt; 728 sc->flags &= ~CT_USED; 729 } 730 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 731 mfcs2speedtab2); 732 733 /* 734 * If Baud Rate Generator can't generate requested speed, 735 * try to use the counter/timer. 736 */ 737 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 738 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 739 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 740 ospeed = -1; 741 else { 742 scc->sc_regs->du_ctur = ospeed >> 8; 743 scc->sc_regs->du_ctlr = ospeed; 744 scc->ct_val = ospeed; 745 ++scc->ct_usecnt; 746 sc->flags |= CT_USED; 747 ospeed = 0xdd; 748 } 749 } 750 /* XXXX 68681 duart could handle split speeds */ 751 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 752 return(EINVAL); 753 754 /* XXXX handle parity, character size, stop bits, flow control */ 755 756 /* 757 * copy to tty 758 */ 759 tp->t_ispeed = t->c_ispeed; 760 tp->t_ospeed = t->c_ospeed; 761 tp->t_cflag = cflag; 762 763 /* 764 * enable interrupts 765 */ 766 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 767 scc->sc_regs->du_imr = scc->imask; 768 #if defined(DEBUG) && 0 769 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 770 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 771 #endif 772 if (ospeed == 0) 773 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 774 else { 775 /* 776 * (re)enable DTR 777 * and set baud rate. (8 bit mode) 778 */ 779 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 780 sc->sc_duart->ch_csr = ospeed; 781 } 782 return(0); 783 } 784 785 int 786 mfcshwiflow(tp, flag) 787 struct tty *tp; 788 int flag; 789 { 790 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 791 int unit = tp->t_dev & 1; 792 793 if (flag) 794 sc->sc_regs->du_btrst = 1 << unit; 795 else 796 sc->sc_regs->du_btst = 1 << unit; 797 return 1; 798 } 799 800 void 801 mfcsstart(tp) 802 struct tty *tp; 803 { 804 int cc, s, unit; 805 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 806 struct mfc_softc *scc= sc->sc_mfc; 807 808 if ((tp->t_state & TS_ISOPEN) == 0) 809 return; 810 811 unit = tp->t_dev & 1; 812 813 s = splser(); 814 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 815 goto out; 816 817 cc = tp->t_outq.c_cc; 818 if (cc <= tp->t_lowat) { 819 if (tp->t_state & TS_ASLEEP) { 820 tp->t_state &= ~TS_ASLEEP; 821 wakeup((caddr_t) & tp->t_outq); 822 } 823 selwakeup(&tp->t_wsel); 824 } 825 if (cc == 0 || (tp->t_state & TS_BUSY)) 826 goto out; 827 828 /* 829 * We only do bulk transfers if using CTSRTS flow control, not for 830 * (probably sloooow) ixon/ixoff devices. 831 */ 832 if ((tp->t_cflag & CRTSCTS) == 0) 833 cc = 1; 834 835 /* 836 * Limit the amount of output we do in one burst 837 * to prevent hogging the CPU. 838 */ 839 if (cc > SEROBUF_SIZE) 840 cc = SEROBUF_SIZE; 841 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 842 if (cc > 0) { 843 tp->t_state |= TS_BUSY; 844 845 sc->ptr = sc->outbuf; 846 sc->end = sc->outbuf + cc; 847 848 /* 849 * Get first character out, then have TBE-interrupts blow out 850 * further characters, until buffer is empty, and TS_BUSY gets 851 * cleared. 852 */ 853 sc->sc_duart->ch_tb = *sc->ptr++; 854 scc->imask |= 1 << (unit * 4); 855 sc->sc_regs->du_imr = scc->imask; 856 } 857 out: 858 splx(s); 859 } 860 861 /* 862 * Stop output on a line. 863 */ 864 /*ARGSUSED*/ 865 void 866 mfcsstop(tp, flag) 867 struct tty *tp; 868 int flag; 869 { 870 int s; 871 872 s = splser(); 873 if (tp->t_state & TS_BUSY) { 874 if ((tp->t_state & TS_TTSTOP) == 0) 875 tp->t_state |= TS_FLUSH; 876 } 877 splx(s); 878 } 879 880 int 881 mfcsmctl(dev, bits, how) 882 dev_t dev; 883 int bits, how; 884 { 885 int unit, s; 886 u_char ub = 0; 887 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 888 889 unit = dev & 1; 890 891 /* 892 * convert TIOCM* mask into CIA mask 893 * which is active low 894 */ 895 if (how != DMGET) { 896 /* 897 * need to save current state of DTR & RTS ? 898 */ 899 if (bits & TIOCM_DTR) 900 ub |= 0x04 << unit; 901 if (bits & TIOCM_RTS) 902 ub |= 0x01 << unit; 903 } 904 s = splser(); 905 switch (how) { 906 case DMSET: 907 sc->sc_regs->du_btst = ub; 908 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 909 break; 910 911 case DMBIC: 912 sc->sc_regs->du_btrst = ub; 913 ub = ~sc->sc_regs->du_ip; 914 break; 915 916 case DMBIS: 917 sc->sc_regs->du_btst = ub; 918 ub = ~sc->sc_regs->du_ip; 919 break; 920 921 case DMGET: 922 ub = ~sc->sc_regs->du_ip; 923 break; 924 } 925 (void)splx(s); 926 927 /* XXXX should keep DTR & RTS states in softc? */ 928 bits = TIOCM_DTR | TIOCM_RTS; 929 if (ub & (1 << unit)) 930 bits |= TIOCM_CTS; 931 if (ub & (4 << unit)) 932 bits |= TIOCM_DSR; 933 if (ub & (0x10 << unit)) 934 bits |= TIOCM_CD; 935 /* XXXX RI is not supported on all boards */ 936 if (sc->sc_regs->pad26 & (1 << unit)) 937 bits |= TIOCM_RI; 938 939 return(bits); 940 } 941 942 /* 943 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 944 */ 945 946 int 947 mfcintr(arg) 948 void *arg; 949 { 950 struct mfc_softc *scc = arg; 951 struct mfcs_softc *sc; 952 struct mfc_regs *regs; 953 struct tty *tp; 954 int istat, unit; 955 u_short c; 956 957 regs = scc->sc_regs; 958 istat = regs->du_isr & scc->imask; 959 if (istat == 0) 960 return (0); 961 unit = scc->sc_dev.dv_unit * 2; 962 if (istat & 0x02) { /* channel A receive interrupt */ 963 sc = mfcs_cd.cd_devs[unit]; 964 while (1) { 965 c = regs->du_sra << 8; 966 if ((c & 0x0100) == 0) 967 break; 968 c |= regs->du_rba; 969 if (sc->incnt == SERIBUF_SIZE) 970 ++sc->ovfl; 971 else { 972 *sc->wptr++ = c; 973 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 974 sc->wptr = sc->inbuf; 975 ++sc->incnt; 976 if (sc->incnt > SERIBUF_SIZE - 16) 977 regs->du_btrst = 1; 978 } 979 if (c & 0x1000) 980 regs->du_cra = 0x40; 981 } 982 } 983 if (istat & 0x20) { /* channel B receive interrupt */ 984 sc = mfcs_cd.cd_devs[unit + 1]; 985 while (1) { 986 c = regs->du_srb << 8; 987 if ((c & 0x0100) == 0) 988 break; 989 c |= regs->du_rbb; 990 if (sc->incnt == SERIBUF_SIZE) 991 ++sc->ovfl; 992 else { 993 *sc->wptr++ = c; 994 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 995 sc->wptr = sc->inbuf; 996 ++sc->incnt; 997 if (sc->incnt > SERIBUF_SIZE - 16) 998 regs->du_btrst = 2; 999 } 1000 if (c & 0x1000) 1001 regs->du_crb = 0x40; 1002 } 1003 } 1004 if (istat & 0x01) { /* channel A transmit interrupt */ 1005 sc = mfcs_cd.cd_devs[unit]; 1006 tp = sc->sc_tty; 1007 if (sc->ptr == sc->end) { 1008 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1009 scc->imask &= ~0x01; 1010 regs->du_imr = scc->imask; 1011 add_sicallback (tp->t_linesw ? 1012 (sifunc_t)tp->t_linesw->l_start 1013 : (sifunc_t)mfcsstart, tp, NULL); 1014 1015 } 1016 else 1017 regs->du_tba = *sc->ptr++; 1018 } 1019 if (istat & 0x10) { /* channel B transmit interrupt */ 1020 sc = mfcs_cd.cd_devs[unit + 1]; 1021 tp = sc->sc_tty; 1022 if (sc->ptr == sc->end) { 1023 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1024 scc->imask &= ~0x10; 1025 regs->du_imr = scc->imask; 1026 add_sicallback (tp->t_linesw ? 1027 (sifunc_t)tp->t_linesw->l_start 1028 : (sifunc_t)mfcsstart, tp, NULL); 1029 } 1030 else 1031 regs->du_tbb = *sc->ptr++; 1032 } 1033 if (istat & 0x80) { /* input port change interrupt */ 1034 c = regs->du_ipcr; 1035 printf ("%s: ipcr %02x", scc->sc_dev.dv_xname, c); 1036 } 1037 return(1); 1038 } 1039 1040 void 1041 mfcsxintr(unit) 1042 int unit; 1043 { 1044 int s1, s2, ovfl; 1045 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1046 struct tty *tp = sc->sc_tty; 1047 1048 /* 1049 * Make sure we're not interrupted by another 1050 * vbl, but allow level6 ints 1051 */ 1052 s1 = spltty(); 1053 1054 /* 1055 * pass along any acumulated information 1056 * while input is not blocked 1057 */ 1058 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1059 /* 1060 * no collision with ser_fastint() 1061 */ 1062 mfcseint(unit, *sc->rptr++); 1063 1064 ovfl = 0; 1065 /* lock against mfcs_fastint() */ 1066 s2 = splser(); 1067 --sc->incnt; 1068 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1069 sc->rptr = sc->inbuf; 1070 if (sc->ovfl != 0) { 1071 ovfl = sc->ovfl; 1072 sc->ovfl = 0; 1073 } 1074 splx(s2); 1075 if (ovfl != 0) 1076 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1077 sc->sc_dev.dv_xname, ovfl); 1078 } 1079 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1080 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1081 } 1082 splx(s1); 1083 } 1084 1085 void 1086 mfcseint(unit, stat) 1087 int unit, stat; 1088 { 1089 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1090 struct tty *tp; 1091 u_char ch; 1092 int c; 1093 1094 tp = sc->sc_tty; 1095 ch = stat & 0xff; 1096 c = ch; 1097 1098 if ((tp->t_state & TS_ISOPEN) == 0) { 1099 #ifdef KGDB 1100 /* we don't care about parity errors */ 1101 if (kgdb_dev == makedev(sermajor, unit) && c == FRAME_END) 1102 kgdb_connect(0); /* trap into kgdb */ 1103 #endif 1104 return; 1105 } 1106 1107 /* 1108 * Check for break and (if enabled) parity error. 1109 */ 1110 if (stat & 0xc000) 1111 c |= TTY_FE; 1112 else if (stat & 0x2000) 1113 c |= TTY_PE; 1114 1115 if (stat & 0x1000) 1116 log(LOG_WARNING, "%s: fifo overflow\n", 1117 ((struct mfcs_softc *)mfcs_cd.cd_devs[unit])->sc_dev.dv_xname); 1118 1119 tp->t_linesw->l_rint(c, tp); 1120 } 1121 1122 /* 1123 * This interrupt is periodically invoked in the vertical blank 1124 * interrupt. It's used to keep track of the modem control lines 1125 * and (new with the fast_int code) to move accumulated data 1126 * up into the tty layer. 1127 */ 1128 void 1129 mfcsmint(unit) 1130 int unit; 1131 { 1132 struct tty *tp; 1133 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1134 u_char stat, last, istat; 1135 1136 tp = sc->sc_tty; 1137 if (!tp) 1138 return; 1139 1140 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 1141 sc->rptr = sc->wptr = sc->inbuf; 1142 sc->incnt = 0; 1143 return; 1144 } 1145 /* 1146 * empty buffer 1147 */ 1148 mfcsxintr(unit); 1149 1150 stat = ~sc->sc_regs->du_ip; 1151 last = sc->sc_mfc->last_ip; 1152 sc->sc_mfc->last_ip = stat; 1153 1154 /* 1155 * check whether any interesting signal changed state 1156 */ 1157 istat = stat ^ last; 1158 1159 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1160 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1161 if (stat & (0x10 << (unit & 1))) 1162 tp->t_linesw->l_modem(tp, 1); 1163 else if (tp->t_linesw->l_modem(tp, 0) == 0) { 1164 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1165 } 1166 } 1167 } 1168
Indexes created Tue Sep 23 14:10:03 GMT 2025