1 /* $NetBSD: mfc.c,v 1.38 2005/12/11 12:16:28 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 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 32 #include "opt_kgdb.h" 33 34 /* 35 * Copyright (c) 1994 Michael L. Hitch 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 1. Redistributions of source code must retain the above copyright 41 * notice, this list of conditions and the following disclaimer. 42 * 2. Redistributions in binary form must reproduce the above copyright 43 * notice, this list of conditions and the following disclaimer in the 44 * documentation and/or other materials provided with the distribution. 45 * 46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 47 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 48 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 49 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 50 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 51 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 52 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 53 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 54 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 55 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 56 */ 57 58 #include "opt_kgdb.h" 59 60 #include <sys/cdefs.h> 61 __KERNEL_RCSID(0, "$NetBSD: mfc.c,v 1.38 2005/12/11 12:16:28 christos Exp $"); 62 63 #include <sys/param.h> 64 #include <sys/systm.h> 65 #include <sys/kernel.h> 66 #include <sys/device.h> 67 #include <sys/tty.h> 68 #include <sys/proc.h> 69 #include <sys/file.h> 70 #include <sys/malloc.h> 71 #include <sys/uio.h> 72 #include <sys/kernel.h> 73 #include <sys/syslog.h> 74 #include <sys/queue.h> 75 #include <sys/conf.h> 76 #include <machine/cpu.h> 77 #include <amiga/amiga/device.h> 78 #include <amiga/amiga/isr.h> 79 #include <amiga/amiga/custom.h> 80 #include <amiga/amiga/cia.h> 81 #include <amiga/amiga/cc.h> 82 #include <amiga/dev/zbusvar.h> 83 84 #include <dev/cons.h> 85 86 #include "mfcs.h" 87 88 #ifndef SEROBUF_SIZE 89 #define SEROBUF_SIZE 128 90 #endif 91 #ifndef SERIBUF_SIZE 92 #define SERIBUF_SIZE 1024 93 #endif 94 95 #define splser() spl6() 96 97 /* 98 * 68581 DUART registers 99 */ 100 struct mfc_regs { 101 volatile u_char du_mr1a; 102 #define du_mr2a du_mr1a 103 u_char pad0; 104 volatile u_char du_csra; 105 #define du_sra du_csra 106 u_char pad2; 107 volatile u_char du_cra; 108 u_char pad4; 109 volatile u_char du_tba; 110 #define du_rba du_tba 111 u_char pad6; 112 volatile u_char du_acr; 113 #define du_ipcr du_acr 114 u_char pad8; 115 volatile u_char du_imr; 116 #define du_isr du_imr 117 u_char pad10; 118 volatile u_char du_ctur; 119 #define du_cmsb du_ctur 120 u_char pad12; 121 volatile u_char du_ctlr; 122 #define du_clsb du_ctlr 123 u_char pad14; 124 volatile u_char du_mr1b; 125 #define du_mr2b du_mr1b 126 u_char pad16; 127 volatile u_char du_csrb; 128 #define du_srb du_csrb 129 u_char pad18; 130 volatile u_char du_crb; 131 u_char pad20; 132 volatile u_char du_tbb; 133 #define du_rbb du_tbb 134 u_char pad22; 135 volatile u_char du_ivr; 136 u_char pad24; 137 volatile u_char du_opcr; 138 #define du_ip du_opcr 139 u_char pad26; 140 volatile u_char du_btst; 141 #define du_strc du_btst 142 u_char pad28; 143 volatile u_char du_btrst; 144 #define du_stpc du_btrst 145 u_char pad30; 146 }; 147 148 /* 149 * 68681 DUART serial port registers 150 */ 151 struct duart_regs { 152 volatile u_char ch_mr1; 153 #define ch_mr2 ch_mr1 154 u_char pad0; 155 volatile u_char ch_csr; 156 #define ch_sr ch_csr 157 u_char pad1; 158 volatile u_char ch_cr; 159 u_char pad2; 160 volatile u_char ch_tb; 161 #define ch_rb ch_tb 162 u_char pad3; 163 }; 164 165 struct mfc_softc { 166 struct device sc_dev; 167 struct isr sc_isr; 168 struct mfc_regs *sc_regs; 169 u_long clk_frq; 170 u_short ct_val; 171 u_char ct_usecnt; 172 u_char imask; 173 u_char mfc_iii; 174 u_char last_ip; 175 }; 176 177 #if NMFCS > 0 178 struct mfcs_softc { 179 struct device sc_dev; 180 struct tty *sc_tty; 181 struct duart_regs *sc_duart; 182 struct mfc_regs *sc_regs; 183 struct mfc_softc *sc_mfc; 184 int swflags; 185 long flags; /* XXX */ 186 #define CT_USED 1 /* CT in use */ 187 u_short *rptr, *wptr, incnt, ovfl; 188 u_short inbuf[SERIBUF_SIZE]; 189 char *ptr, *end; 190 char outbuf[SEROBUF_SIZE]; 191 struct vbl_node vbl_node; 192 }; 193 #endif 194 195 #if NMFCP > 0 196 struct mfcp_softc { 197 }; 198 #endif 199 200 struct mfc_args { 201 struct zbus_args zargs; 202 const char *subdev; 203 char unit; 204 }; 205 206 int mfcprint(void *auxp, const char *); 207 void mfcattach(struct device *, struct device *, void *); 208 int mfcmatch(struct device *, struct cfdata *, void *); 209 210 #if NMFCS > 0 211 int mfcsmatch(struct device *, struct cfdata *, void *); 212 void mfcsattach(struct device *, struct device *, void *); 213 int mfcsparam( struct tty *, struct termios *); 214 int mfcshwiflow(struct tty *, int); 215 void mfcsstart(struct tty *); 216 int mfcsmctl(dev_t, int, int); 217 void mfcsxintr(int); 218 void mfcseint(int, int); 219 void mfcsmint(register int); 220 #endif 221 222 #if NMFCP > 0 223 void mfcpattach(struct device *, struct device *, void *); 224 int mfcpmatch(struct device *, struct cfdata *, void *); 225 #endif 226 int mfcintr(void *); 227 228 CFATTACH_DECL(mfc, sizeof(struct mfc_softc), 229 mfcmatch, mfcattach, NULL, NULL); 230 231 #if NMFCS > 0 232 CFATTACH_DECL(mfcs, sizeof(struct mfcs_softc), 233 mfcsmatch, mfcsattach, NULL, NULL); 234 235 extern struct cfdriver mfcs_cd; 236 #endif 237 238 #if NMFCP > 0 239 CFATTACH_DECL(mfcp, sizeof(struct mfcp_softc), 240 mfcpmatch, mfcpattach, NULL, NULL); 241 #endif 242 243 dev_type_open(mfcsopen); 244 dev_type_close(mfcsclose); 245 dev_type_read(mfcsread); 246 dev_type_write(mfcswrite); 247 dev_type_ioctl(mfcsioctl); 248 dev_type_stop(mfcsstop); 249 dev_type_tty(mfcstty); 250 dev_type_poll(mfcspoll); 251 252 const struct cdevsw mfcs_cdevsw = { 253 mfcsopen, mfcsclose, mfcsread, mfcswrite, mfcsioctl, 254 mfcsstop, mfcstty, mfcspoll, nommap, ttykqfilter, D_TTY 255 }; 256 257 int mfcs_active; 258 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 259 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 260 261 #ifdef notyet 262 /* 263 * MultiFaceCard III, II+ (not supported yet), and 264 * SerialMaster 500+ (not supported yet) 265 * baud rate tables for BRG set 1 [not used yet] 266 */ 267 268 const struct speedtab mfcs3speedtab1[] = { 269 { 0, 0 }, 270 { 100, 0x00 }, 271 { 220, 0x11 }, 272 { 600, 0x44 }, 273 { 1200, 0x55 }, 274 { 2400, 0x66 }, 275 { 4800, 0x88 }, 276 { 9600, 0x99 }, 277 { 19200, 0xbb }, 278 { 115200, 0xcc }, 279 { -1, -1 } 280 }; 281 282 /* 283 * MultiFaceCard II, I, and SerialMaster 500 284 * baud rate tables for BRG set 1 [not used yet] 285 */ 286 287 const struct speedtab mfcs2speedtab1[] = { 288 { 0, 0 }, 289 { 50, 0x00 }, 290 { 110, 0x11 }, 291 { 300, 0x44 }, 292 { 600, 0x55 }, 293 { 1200, 0x66 }, 294 { 2400, 0x88 }, 295 { 4800, 0x99 }, 296 { 9600, 0xbb }, 297 { 38400, 0xcc }, 298 { -1, -1 } 299 }; 300 #endif 301 302 /* 303 * MultiFaceCard III, II+ (not supported yet), and 304 * SerialMaster 500+ (not supported yet) 305 * baud rate tables for BRG set 2 306 */ 307 308 const struct speedtab mfcs3speedtab2[] = { 309 { 0, 0 }, 310 { 150, 0x00 }, 311 { 200, 0x11 }, 312 { 300, 0x33 }, 313 { 600, 0x44 }, 314 { 1200, 0x55 }, 315 { 2400, 0x66 }, 316 { 4800, 0x88 }, 317 { 9600, 0x99 }, 318 { 19200, 0xbb }, 319 { 38400, 0xcc }, 320 { -1, -1 } 321 }; 322 323 /* 324 * MultiFaceCard II, I, and SerialMaster 500 325 * baud rate tables for BRG set 2 326 */ 327 328 const struct speedtab mfcs2speedtab2[] = { 329 { 0, 0 }, 330 { 75, 0x00 }, 331 { 100, 0x11 }, 332 { 150, 0x33 }, 333 { 300, 0x44 }, 334 { 600, 0x55 }, 335 { 1200, 0x66 }, 336 { 2400, 0x88 }, 337 { 4800, 0x99 }, 338 { 9600, 0xbb }, 339 { 19200, 0xcc }, 340 { -1, -1 } 341 }; 342 343 /* 344 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 345 */ 346 int 347 mfcmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 348 { 349 struct zbus_args *zap; 350 351 zap = auxp; 352 if (zap->manid == 2092 && 353 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 354 355 return(1); 356 return(0); 357 } 358 359 void 360 mfcattach(struct device *pdp, struct device *dp, void *auxp) 361 { 362 struct mfc_softc *scc; 363 struct zbus_args *zap; 364 struct mfc_args ma; 365 int unit; 366 struct mfc_regs *rp; 367 368 zap = auxp; 369 370 printf ("\n"); 371 372 scc = (struct mfc_softc *)dp; 373 unit = scc->sc_dev.dv_unit; 374 scc->sc_regs = rp = zap->va; 375 if (zap->prodid == 18) 376 scc->mfc_iii = 3; 377 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 378 379 rp->du_opcr = 0x00; /* configure output port? */ 380 rp->du_btrst = 0x0f; /* clear modem lines */ 381 rp->du_ivr = 0; /* IVR */ 382 rp->du_imr = 0; /* IMR */ 383 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 384 rp->du_ctur = 0; 385 rp->du_ctlr = 4; 386 rp->du_csra = 0xcc; /* clock select = 38400 */ 387 rp->du_cra = 0x10; /* reset mode register ptr */ 388 rp->du_cra = 0x20; 389 rp->du_cra = 0x30; 390 rp->du_cra = 0x40; 391 rp->du_mr1a = 0x93; /* MRA1 */ 392 rp->du_mr2a = 0x17; /* MRA2 */ 393 rp->du_csrb = 0xcc; /* clock select = 38400 */ 394 rp->du_crb = 0x10; /* reset mode register ptr */ 395 rp->du_crb = 0x20; 396 rp->du_crb = 0x30; 397 rp->du_crb = 0x40; 398 rp->du_mr1b = 0x93; /* MRB1 */ 399 rp->du_mr2b = 0x17; /* MRB2 */ 400 rp->du_cra = 0x05; /* enable A Rx & Tx */ 401 rp->du_crb = 0x05; /* enable B Rx & Tx */ 402 403 scc->sc_isr.isr_intr = mfcintr; 404 scc->sc_isr.isr_arg = scc; 405 scc->sc_isr.isr_ipl = 6; 406 add_isr(&scc->sc_isr); 407 408 /* configure ports */ 409 bcopy(zap, &ma.zargs, sizeof(struct zbus_args)); 410 ma.subdev = "mfcs"; 411 ma.unit = unit * 2; 412 config_found(dp, &ma, mfcprint); 413 ma.unit = unit * 2 + 1; 414 config_found(dp, &ma, mfcprint); 415 ma.subdev = "mfcp"; 416 ma.unit = unit; 417 config_found(dp, &ma, mfcprint); 418 } 419 420 /* 421 * 422 */ 423 int 424 mfcsmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 425 { 426 struct mfc_args *ma; 427 428 ma = auxp; 429 if (strcmp(ma->subdev, "mfcs") == 0) 430 return (1); 431 return (0); 432 } 433 434 void 435 mfcsattach(struct device *pdp, struct device *dp, void *auxp) 436 { 437 int unit; 438 struct mfcs_softc *sc; 439 struct mfc_softc *scc; 440 struct mfc_args *ma; 441 struct mfc_regs *rp; 442 443 sc = (struct mfcs_softc *) dp; 444 scc = (struct mfc_softc *) pdp; 445 ma = auxp; 446 447 if (dp) { 448 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 449 SEROBUF_SIZE); 450 alloc_sicallback(); 451 } 452 453 unit = ma->unit; 454 mfcs_active |= 1 << unit; 455 sc->rptr = sc->wptr = sc->inbuf; 456 sc->sc_mfc = scc; 457 sc->sc_regs = rp = scc->sc_regs; 458 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? 459 __UNVOLATILE(&rp->du_mr1b) : __UNVOLATILE(&rp->du_mr1a)); 460 /* 461 * should have only one vbl routine to handle all ports? 462 */ 463 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 464 sc->vbl_node.data = (void *) unit; 465 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 466 } 467 468 /* 469 * print diag if pnp is NULL else just extra 470 */ 471 int 472 mfcprint(void *auxp, const char *pnp) 473 { 474 if (pnp == NULL) 475 return(UNCONF); 476 return(QUIET); 477 } 478 479 int 480 mfcsopen(dev_t dev, int flag, int mode, struct lwp *l) 481 { 482 struct tty *tp; 483 struct mfcs_softc *sc; 484 int unit, error, s; 485 486 error = 0; 487 unit = dev & 0x1f; 488 489 if (unit >= mfcs_cd.cd_ndevs || (mfcs_active & (1 << unit)) == 0) 490 return (ENXIO); 491 sc = mfcs_cd.cd_devs[unit]; 492 493 s = spltty(); 494 495 if (sc->sc_tty) 496 tp = sc->sc_tty; 497 else { 498 tp = sc->sc_tty = ttymalloc(); 499 tty_attach(tp); 500 } 501 502 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 503 tp->t_param = mfcsparam; 504 tp->t_dev = dev; 505 tp->t_hwiflow = mfcshwiflow; 506 507 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 508 ttychars(tp); 509 if (tp->t_ispeed == 0) { 510 /* 511 * only when cleared do we reset to defaults. 512 */ 513 tp->t_iflag = TTYDEF_IFLAG; 514 tp->t_oflag = TTYDEF_OFLAG; 515 tp->t_cflag = TTYDEF_CFLAG; 516 tp->t_lflag = TTYDEF_LFLAG; 517 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 518 } 519 /* 520 * do these all the time 521 */ 522 if (sc->swflags & TIOCFLAG_CLOCAL) 523 tp->t_cflag |= CLOCAL; 524 if (sc->swflags & TIOCFLAG_CRTSCTS) 525 tp->t_cflag |= CRTSCTS; 526 if (sc->swflags & TIOCFLAG_MDMBUF) 527 tp->t_cflag |= MDMBUF; 528 mfcsparam(tp, &tp->t_termios); 529 ttsetwater(tp); 530 531 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 532 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 533 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 534 tp->t_state |= TS_CARR_ON; 535 else 536 tp->t_state &= ~TS_CARR_ON; 537 } else if (tp->t_state & TS_XCLUDE && 538 suser(l->l_proc->p_ucred, &l->l_proc->p_acflag) != 0) { 539 splx(s); 540 return(EBUSY); 541 } 542 543 /* 544 * if NONBLOCK requested, ignore carrier 545 */ 546 if (flag & O_NONBLOCK) 547 goto done; 548 549 /* 550 * block waiting for carrier 551 */ 552 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 553 tp->t_wopen++; 554 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 555 TTIPRI | PCATCH, ttopen, 0); 556 tp->t_wopen--; 557 if (error) { 558 splx(s); 559 return(error); 560 } 561 } 562 done: 563 /* This is a way to handle lost XON characters */ 564 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 565 tp->t_state &= ~TS_TTSTOP; 566 ttstart (tp); 567 } 568 569 splx(s); 570 /* 571 * Reset the tty pointer, as there could have been a dialout 572 * use of the tty with a dialin open waiting. 573 */ 574 tp->t_dev = dev; 575 return tp->t_linesw->l_open(dev, tp); 576 } 577 578 /*ARGSUSED*/ 579 int 580 mfcsclose(dev_t dev, int flag, int mode, struct lwp *l) 581 { 582 struct tty *tp; 583 int unit; 584 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 585 struct mfc_softc *scc= sc->sc_mfc; 586 587 unit = dev & 31; 588 589 tp = sc->sc_tty; 590 tp->t_linesw->l_close(tp, flag); 591 sc->sc_duart->ch_cr = 0x70; /* stop break */ 592 593 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 594 scc->sc_regs->du_imr = scc->imask; 595 if (sc->flags & CT_USED) { 596 --scc->ct_usecnt; 597 sc->flags &= ~CT_USED; 598 } 599 600 /* 601 * If the device is closed, it's close, no matter whether we deal with 602 * modem control signals nor not. 603 */ 604 #if 0 605 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 606 (tp->t_state & TS_ISOPEN) == 0) 607 #endif 608 (void) mfcsmctl(dev, 0, DMSET); 609 ttyclose(tp); 610 #if not_yet 611 if (tp != &mfcs_cons) { 612 remove_vbl_function(&sc->vbl_node); 613 ttyfree(tp); 614 sc->sc_tty = (struct tty *) NULL; 615 } 616 #endif 617 return (0); 618 } 619 620 int 621 mfcsread(dev_t dev, struct uio *uio, int flag) 622 { 623 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 624 struct tty *tp = sc->sc_tty; 625 if (tp == NULL) 626 return(ENXIO); 627 return tp->t_linesw->l_read(tp, uio, flag); 628 } 629 630 int 631 mfcswrite(dev_t dev, struct uio *uio, int flag) 632 { 633 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 634 struct tty *tp = sc->sc_tty; 635 636 if (tp == NULL) 637 return(ENXIO); 638 return tp->t_linesw->l_write(tp, uio, flag); 639 } 640 641 int 642 mfcspoll(dev_t dev, int events, struct lwp *l) 643 { 644 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 645 struct tty *tp = sc->sc_tty; 646 647 if (tp == NULL) 648 return(ENXIO); 649 return ((*tp->t_linesw->l_poll)(tp, events, l)); 650 } 651 652 struct tty * 653 mfcstty(dev_t dev) 654 { 655 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 656 657 return (sc->sc_tty); 658 } 659 660 int 661 mfcsioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l) 662 { 663 register struct tty *tp; 664 register int error; 665 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 666 667 tp = sc->sc_tty; 668 if (!tp) 669 return ENXIO; 670 671 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 672 if (error != EPASSTHROUGH) 673 return(error); 674 675 error = ttioctl(tp, cmd, data, flag, l); 676 if (error != EPASSTHROUGH) 677 return(error); 678 679 switch (cmd) { 680 case TIOCSBRK: 681 sc->sc_duart->ch_cr = 0x60; /* start break */ 682 break; 683 684 case TIOCCBRK: 685 sc->sc_duart->ch_cr = 0x70; /* stop break */ 686 break; 687 688 case TIOCSDTR: 689 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 690 break; 691 692 case TIOCCDTR: 693 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 694 break; 695 696 case TIOCMSET: 697 (void) mfcsmctl(dev, *(int *) data, DMSET); 698 break; 699 700 case TIOCMBIS: 701 (void) mfcsmctl(dev, *(int *) data, DMBIS); 702 break; 703 704 case TIOCMBIC: 705 (void) mfcsmctl(dev, *(int *) data, DMBIC); 706 break; 707 708 case TIOCMGET: 709 *(int *)data = mfcsmctl(dev, 0, DMGET); 710 break; 711 case TIOCGFLAGS: 712 *(int *)data = SWFLAGS(dev); 713 break; 714 case TIOCSFLAGS: 715 error = suser(l->l_proc->p_ucred, &l->l_proc->p_acflag); 716 if (error != 0) 717 return(EPERM); 718 719 sc->swflags = *(int *)data; 720 sc->swflags &= /* only allow valid flags */ 721 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 722 /* XXXX need to change duart parameters? */ 723 break; 724 default: 725 return(EPASSTHROUGH); 726 } 727 728 return(0); 729 } 730 731 int 732 mfcsparam(struct tty *tp, struct termios *t) 733 { 734 int cflag, unit, ospeed; 735 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 736 struct mfc_softc *scc= sc->sc_mfc; 737 738 cflag = t->c_cflag; 739 unit = tp->t_dev & 31; 740 if (sc->flags & CT_USED) { 741 --scc->ct_usecnt; 742 sc->flags &= ~CT_USED; 743 } 744 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 745 mfcs2speedtab2); 746 747 /* 748 * If Baud Rate Generator can't generate requested speed, 749 * try to use the counter/timer. 750 */ 751 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 752 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 753 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 754 ospeed = -1; 755 else { 756 scc->sc_regs->du_ctur = ospeed >> 8; 757 scc->sc_regs->du_ctlr = ospeed; 758 scc->ct_val = ospeed; 759 ++scc->ct_usecnt; 760 sc->flags |= CT_USED; 761 ospeed = 0xdd; 762 } 763 } 764 /* XXXX 68681 duart could handle split speeds */ 765 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 766 return(EINVAL); 767 768 /* XXXX handle parity, character size, stop bits, flow control */ 769 770 /* 771 * copy to tty 772 */ 773 tp->t_ispeed = t->c_ispeed; 774 tp->t_ospeed = t->c_ospeed; 775 tp->t_cflag = cflag; 776 777 /* 778 * enable interrupts 779 */ 780 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 781 scc->sc_regs->du_imr = scc->imask; 782 #if defined(DEBUG) && 0 783 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 784 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 785 #endif 786 if (ospeed == 0) 787 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 788 else { 789 /* 790 * (re)enable DTR 791 * and set baud rate. (8 bit mode) 792 */ 793 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 794 sc->sc_duart->ch_csr = ospeed; 795 } 796 return(0); 797 } 798 799 int 800 mfcshwiflow(struct tty *tp, int flag) 801 { 802 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 803 int unit = tp->t_dev & 1; 804 805 if (flag) 806 sc->sc_regs->du_btrst = 1 << unit; 807 else 808 sc->sc_regs->du_btst = 1 << unit; 809 return 1; 810 } 811 812 void 813 mfcsstart(struct tty *tp) 814 { 815 int cc, s, unit; 816 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 817 struct mfc_softc *scc= sc->sc_mfc; 818 819 if ((tp->t_state & TS_ISOPEN) == 0) 820 return; 821 822 unit = tp->t_dev & 1; 823 824 s = splser(); 825 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 826 goto out; 827 828 cc = tp->t_outq.c_cc; 829 if (cc <= tp->t_lowat) { 830 if (tp->t_state & TS_ASLEEP) { 831 tp->t_state &= ~TS_ASLEEP; 832 wakeup((caddr_t) & tp->t_outq); 833 } 834 selwakeup(&tp->t_wsel); 835 } 836 if (cc == 0 || (tp->t_state & TS_BUSY)) 837 goto out; 838 839 /* 840 * We only do bulk transfers if using CTSRTS flow control, not for 841 * (probably sloooow) ixon/ixoff devices. 842 */ 843 if ((tp->t_cflag & CRTSCTS) == 0) 844 cc = 1; 845 846 /* 847 * Limit the amount of output we do in one burst 848 * to prevent hogging the CPU. 849 */ 850 if (cc > SEROBUF_SIZE) 851 cc = SEROBUF_SIZE; 852 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 853 if (cc > 0) { 854 tp->t_state |= TS_BUSY; 855 856 sc->ptr = sc->outbuf; 857 sc->end = sc->outbuf + cc; 858 859 /* 860 * Get first character out, then have TBE-interrupts blow out 861 * further characters, until buffer is empty, and TS_BUSY gets 862 * cleared. 863 */ 864 sc->sc_duart->ch_tb = *sc->ptr++; 865 scc->imask |= 1 << (unit * 4); 866 sc->sc_regs->du_imr = scc->imask; 867 } 868 out: 869 splx(s); 870 } 871 872 /* 873 * Stop output on a line. 874 */ 875 /*ARGSUSED*/ 876 void 877 mfcsstop(struct tty *tp, int flag) 878 { 879 int s; 880 881 s = splser(); 882 if (tp->t_state & TS_BUSY) { 883 if ((tp->t_state & TS_TTSTOP) == 0) 884 tp->t_state |= TS_FLUSH; 885 } 886 splx(s); 887 } 888 889 int 890 mfcsmctl(dev_t dev, int bits, int how) 891 { 892 int unit, s; 893 u_char ub = 0; 894 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 895 896 unit = dev & 1; 897 898 /* 899 * convert TIOCM* mask into CIA mask 900 * which is active low 901 */ 902 if (how != DMGET) { 903 /* 904 * need to save current state of DTR & RTS ? 905 */ 906 if (bits & TIOCM_DTR) 907 ub |= 0x04 << unit; 908 if (bits & TIOCM_RTS) 909 ub |= 0x01 << unit; 910 } 911 s = splser(); 912 switch (how) { 913 case DMSET: 914 sc->sc_regs->du_btst = ub; 915 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 916 break; 917 918 case DMBIC: 919 sc->sc_regs->du_btrst = ub; 920 ub = ~sc->sc_regs->du_ip; 921 break; 922 923 case DMBIS: 924 sc->sc_regs->du_btst = ub; 925 ub = ~sc->sc_regs->du_ip; 926 break; 927 928 case DMGET: 929 ub = ~sc->sc_regs->du_ip; 930 break; 931 } 932 (void)splx(s); 933 934 /* XXXX should keep DTR & RTS states in softc? */ 935 bits = TIOCM_DTR | TIOCM_RTS; 936 if (ub & (1 << unit)) 937 bits |= TIOCM_CTS; 938 if (ub & (4 << unit)) 939 bits |= TIOCM_DSR; 940 if (ub & (0x10 << unit)) 941 bits |= TIOCM_CD; 942 /* XXXX RI is not supported on all boards */ 943 if (sc->sc_regs->pad26 & (1 << unit)) 944 bits |= TIOCM_RI; 945 946 return(bits); 947 } 948 949 /* 950 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 951 */ 952 953 int 954 mfcintr(void *arg) 955 { 956 struct mfc_softc *scc = arg; 957 struct mfcs_softc *sc; 958 struct mfc_regs *regs; 959 struct tty *tp; 960 int istat, unit; 961 u_short c; 962 963 regs = scc->sc_regs; 964 istat = regs->du_isr & scc->imask; 965 if (istat == 0) 966 return (0); 967 unit = scc->sc_dev.dv_unit * 2; 968 if (istat & 0x02) { /* channel A receive interrupt */ 969 sc = mfcs_cd.cd_devs[unit]; 970 while (1) { 971 c = regs->du_sra << 8; 972 if ((c & 0x0100) == 0) 973 break; 974 c |= regs->du_rba; 975 if (sc->incnt == SERIBUF_SIZE) 976 ++sc->ovfl; 977 else { 978 *sc->wptr++ = c; 979 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 980 sc->wptr = sc->inbuf; 981 ++sc->incnt; 982 if (sc->incnt > SERIBUF_SIZE - 16) 983 regs->du_btrst = 1; 984 } 985 if (c & 0x1000) 986 regs->du_cra = 0x40; 987 } 988 } 989 if (istat & 0x20) { /* channel B receive interrupt */ 990 sc = mfcs_cd.cd_devs[unit + 1]; 991 while (1) { 992 c = regs->du_srb << 8; 993 if ((c & 0x0100) == 0) 994 break; 995 c |= regs->du_rbb; 996 if (sc->incnt == SERIBUF_SIZE) 997 ++sc->ovfl; 998 else { 999 *sc->wptr++ = c; 1000 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 1001 sc->wptr = sc->inbuf; 1002 ++sc->incnt; 1003 if (sc->incnt > SERIBUF_SIZE - 16) 1004 regs->du_btrst = 2; 1005 } 1006 if (c & 0x1000) 1007 regs->du_crb = 0x40; 1008 } 1009 } 1010 if (istat & 0x01) { /* channel A transmit interrupt */ 1011 sc = mfcs_cd.cd_devs[unit]; 1012 tp = sc->sc_tty; 1013 if (sc->ptr == sc->end) { 1014 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1015 scc->imask &= ~0x01; 1016 regs->du_imr = scc->imask; 1017 add_sicallback (tp->t_linesw ? 1018 (sifunc_t)tp->t_linesw->l_start 1019 : (sifunc_t)mfcsstart, tp, NULL); 1020 1021 } 1022 else 1023 regs->du_tba = *sc->ptr++; 1024 } 1025 if (istat & 0x10) { /* channel B transmit interrupt */ 1026 sc = mfcs_cd.cd_devs[unit + 1]; 1027 tp = sc->sc_tty; 1028 if (sc->ptr == sc->end) { 1029 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1030 scc->imask &= ~0x10; 1031 regs->du_imr = scc->imask; 1032 add_sicallback (tp->t_linesw ? 1033 (sifunc_t)tp->t_linesw->l_start 1034 : (sifunc_t)mfcsstart, tp, NULL); 1035 } 1036 else 1037 regs->du_tbb = *sc->ptr++; 1038 } 1039 if (istat & 0x80) { /* input port change interrupt */ 1040 c = regs->du_ipcr; 1041 printf ("%s: ipcr %02x", scc->sc_dev.dv_xname, c); 1042 } 1043 return(1); 1044 } 1045 1046 void 1047 mfcsxintr(int unit) 1048 { 1049 int s1, s2, ovfl; 1050 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1051 struct tty *tp = sc->sc_tty; 1052 1053 /* 1054 * Make sure we're not interrupted by another 1055 * vbl, but allow level6 ints 1056 */ 1057 s1 = spltty(); 1058 1059 /* 1060 * pass along any acumulated information 1061 * while input is not blocked 1062 */ 1063 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1064 /* 1065 * no collision with ser_fastint() 1066 */ 1067 mfcseint(unit, *sc->rptr++); 1068 1069 ovfl = 0; 1070 /* lock against mfcs_fastint() */ 1071 s2 = splser(); 1072 --sc->incnt; 1073 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1074 sc->rptr = sc->inbuf; 1075 if (sc->ovfl != 0) { 1076 ovfl = sc->ovfl; 1077 sc->ovfl = 0; 1078 } 1079 splx(s2); 1080 if (ovfl != 0) 1081 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1082 sc->sc_dev.dv_xname, ovfl); 1083 } 1084 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1085 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1086 } 1087 splx(s1); 1088 } 1089 1090 void 1091 mfcseint(int unit, int stat) 1092 { 1093 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1094 struct tty *tp; 1095 u_char ch; 1096 int c; 1097 1098 tp = sc->sc_tty; 1099 ch = stat & 0xff; 1100 c = ch; 1101 1102 if ((tp->t_state & TS_ISOPEN) == 0) { 1103 #ifdef KGDB 1104 extern const struct cdevsw ser_cdevsw; 1105 int maj; 1106 1107 /* we don't care about parity errors */ 1108 maj = cdevsw_lookup_major(&ser_cdevsw); 1109 if (kgdb_dev == makedev(maj, unit) && c == FRAME_END) 1110 kgdb_connect(0); /* trap into kgdb */ 1111 #endif 1112 return; 1113 } 1114 1115 /* 1116 * Check for break and (if enabled) parity error. 1117 */ 1118 if (stat & 0xc000) 1119 c |= TTY_FE; 1120 else if (stat & 0x2000) 1121 c |= TTY_PE; 1122 1123 if (stat & 0x1000) 1124 log(LOG_WARNING, "%s: fifo overflow\n", 1125 ((struct mfcs_softc *)mfcs_cd.cd_devs[unit])->sc_dev.dv_xname); 1126 1127 tp->t_linesw->l_rint(c, tp); 1128 } 1129 1130 /* 1131 * This interrupt is periodically invoked in the vertical blank 1132 * interrupt. It's used to keep track of the modem control lines 1133 * and (new with the fast_int code) to move accumulated data 1134 * up into the tty layer. 1135 */ 1136 void 1137 mfcsmint(int unit) 1138 { 1139 struct tty *tp; 1140 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1141 u_char stat, last, istat; 1142 1143 tp = sc->sc_tty; 1144 if (!tp) 1145 return; 1146 1147 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 1148 sc->rptr = sc->wptr = sc->inbuf; 1149 sc->incnt = 0; 1150 return; 1151 } 1152 /* 1153 * empty buffer 1154 */ 1155 mfcsxintr(unit); 1156 1157 stat = ~sc->sc_regs->du_ip; 1158 last = sc->sc_mfc->last_ip; 1159 sc->sc_mfc->last_ip = stat; 1160 1161 /* 1162 * check whether any interesting signal changed state 1163 */ 1164 istat = stat ^ last; 1165 1166 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1167 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1168 if (stat & (0x10 << (unit & 1))) 1169 tp->t_linesw->l_modem(tp, 1); 1170 else if (tp->t_linesw->l_modem(tp, 0) == 0) { 1171 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1172 } 1173 } 1174 } 1175