mfc.c revision 1.44
1 /* $NetBSD: mfc.c,v 1.44 2006/10/01 20:31:49 elad 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 1.44 2006/10/01 20:31:49 elad 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 <sys/kauth.h> 77 #include <machine/cpu.h> 78 #include <amiga/amiga/device.h> 79 #include <amiga/amiga/isr.h> 80 #include <amiga/amiga/custom.h> 81 #include <amiga/amiga/cia.h> 82 #include <amiga/amiga/cc.h> 83 #include <amiga/dev/zbusvar.h> 84 85 #include <dev/cons.h> 86 87 #include "mfcs.h" 88 89 #ifndef SEROBUF_SIZE 90 #define SEROBUF_SIZE 128 91 #endif 92 #ifndef SERIBUF_SIZE 93 #define SERIBUF_SIZE 1024 94 #endif 95 96 #define splser() spl6() 97 98 /* 99 * 68581 DUART registers 100 */ 101 struct mfc_regs { 102 volatile u_char du_mr1a; 103 #define du_mr2a du_mr1a 104 u_char pad0; 105 volatile u_char du_csra; 106 #define du_sra du_csra 107 u_char pad2; 108 volatile u_char du_cra; 109 u_char pad4; 110 volatile u_char du_tba; 111 #define du_rba du_tba 112 u_char pad6; 113 volatile u_char du_acr; 114 #define du_ipcr du_acr 115 u_char pad8; 116 volatile u_char du_imr; 117 #define du_isr du_imr 118 u_char pad10; 119 volatile u_char du_ctur; 120 #define du_cmsb du_ctur 121 u_char pad12; 122 volatile u_char du_ctlr; 123 #define du_clsb du_ctlr 124 u_char pad14; 125 volatile u_char du_mr1b; 126 #define du_mr2b du_mr1b 127 u_char pad16; 128 volatile u_char du_csrb; 129 #define du_srb du_csrb 130 u_char pad18; 131 volatile u_char du_crb; 132 u_char pad20; 133 volatile u_char du_tbb; 134 #define du_rbb du_tbb 135 u_char pad22; 136 volatile u_char du_ivr; 137 u_char pad24; 138 volatile u_char du_opcr; 139 #define du_ip du_opcr 140 u_char pad26; 141 volatile u_char du_btst; 142 #define du_strc du_btst 143 u_char pad28; 144 volatile u_char du_btrst; 145 #define du_stpc du_btrst 146 u_char pad30; 147 }; 148 149 /* 150 * 68681 DUART serial port registers 151 */ 152 struct duart_regs { 153 volatile u_char ch_mr1; 154 #define ch_mr2 ch_mr1 155 u_char pad0; 156 volatile u_char ch_csr; 157 #define ch_sr ch_csr 158 u_char pad1; 159 volatile u_char ch_cr; 160 u_char pad2; 161 volatile u_char ch_tb; 162 #define ch_rb ch_tb 163 u_char pad3; 164 }; 165 166 struct mfc_softc { 167 struct device sc_dev; 168 struct isr sc_isr; 169 struct mfc_regs *sc_regs; 170 u_long clk_frq; 171 u_short ct_val; 172 u_char ct_usecnt; 173 u_char imask; 174 u_char mfc_iii; 175 u_char last_ip; 176 }; 177 178 #if NMFCS > 0 179 struct mfcs_softc { 180 struct device sc_dev; 181 struct tty *sc_tty; 182 struct duart_regs *sc_duart; 183 struct mfc_regs *sc_regs; 184 struct mfc_softc *sc_mfc; 185 int swflags; 186 long flags; /* XXX */ 187 #define CT_USED 1 /* CT in use */ 188 u_short *rptr, *wptr, incnt, ovfl; 189 u_short inbuf[SERIBUF_SIZE]; 190 char *ptr, *end; 191 char outbuf[SEROBUF_SIZE]; 192 struct vbl_node vbl_node; 193 }; 194 #endif 195 196 #if NMFCP > 0 197 struct mfcp_softc { 198 }; 199 #endif 200 201 struct mfc_args { 202 struct zbus_args zargs; 203 const char *subdev; 204 char unit; 205 }; 206 207 int mfcprint(void *auxp, const char *); 208 void mfcattach(struct device *, struct device *, void *); 209 int mfcmatch(struct device *, struct cfdata *, void *); 210 211 #if NMFCS > 0 212 int mfcsmatch(struct device *, struct cfdata *, void *); 213 void mfcsattach(struct device *, struct device *, void *); 214 int mfcsparam( struct tty *, struct termios *); 215 int mfcshwiflow(struct tty *, int); 216 void mfcsstart(struct tty *); 217 int mfcsmctl(dev_t, int, int); 218 void mfcsxintr(int); 219 void mfcseint(int, int); 220 void mfcsmint(register int); 221 #endif 222 223 #if NMFCP > 0 224 void mfcpattach(struct device *, struct device *, void *); 225 int mfcpmatch(struct device *, struct cfdata *, void *); 226 #endif 227 int mfcintr(void *); 228 229 CFATTACH_DECL(mfc, sizeof(struct mfc_softc), 230 mfcmatch, mfcattach, NULL, NULL); 231 232 #if NMFCS > 0 233 CFATTACH_DECL(mfcs, sizeof(struct mfcs_softc), 234 mfcsmatch, mfcsattach, NULL, NULL); 235 236 extern struct cfdriver mfcs_cd; 237 #endif 238 239 #if NMFCP > 0 240 CFATTACH_DECL(mfcp, sizeof(struct mfcp_softc), 241 mfcpmatch, mfcpattach, NULL, NULL); 242 #endif 243 244 dev_type_open(mfcsopen); 245 dev_type_close(mfcsclose); 246 dev_type_read(mfcsread); 247 dev_type_write(mfcswrite); 248 dev_type_ioctl(mfcsioctl); 249 dev_type_stop(mfcsstop); 250 dev_type_tty(mfcstty); 251 dev_type_poll(mfcspoll); 252 253 const struct cdevsw mfcs_cdevsw = { 254 mfcsopen, mfcsclose, mfcsread, mfcswrite, mfcsioctl, 255 mfcsstop, mfcstty, mfcspoll, nommap, ttykqfilter, D_TTY 256 }; 257 258 int mfcs_active; 259 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 260 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 261 262 #ifdef notyet 263 /* 264 * MultiFaceCard III, II+ (not supported yet), and 265 * SerialMaster 500+ (not supported yet) 266 * baud rate tables for BRG set 1 [not used yet] 267 */ 268 269 const struct speedtab mfcs3speedtab1[] = { 270 { 0, 0 }, 271 { 100, 0x00 }, 272 { 220, 0x11 }, 273 { 600, 0x44 }, 274 { 1200, 0x55 }, 275 { 2400, 0x66 }, 276 { 4800, 0x88 }, 277 { 9600, 0x99 }, 278 { 19200, 0xbb }, 279 { 115200, 0xcc }, 280 { -1, -1 } 281 }; 282 283 /* 284 * MultiFaceCard II, I, and SerialMaster 500 285 * baud rate tables for BRG set 1 [not used yet] 286 */ 287 288 const struct speedtab mfcs2speedtab1[] = { 289 { 0, 0 }, 290 { 50, 0x00 }, 291 { 110, 0x11 }, 292 { 300, 0x44 }, 293 { 600, 0x55 }, 294 { 1200, 0x66 }, 295 { 2400, 0x88 }, 296 { 4800, 0x99 }, 297 { 9600, 0xbb }, 298 { 38400, 0xcc }, 299 { -1, -1 } 300 }; 301 #endif 302 303 /* 304 * MultiFaceCard III, II+ (not supported yet), and 305 * SerialMaster 500+ (not supported yet) 306 * baud rate tables for BRG set 2 307 */ 308 309 const struct speedtab mfcs3speedtab2[] = { 310 { 0, 0 }, 311 { 150, 0x00 }, 312 { 200, 0x11 }, 313 { 300, 0x33 }, 314 { 600, 0x44 }, 315 { 1200, 0x55 }, 316 { 2400, 0x66 }, 317 { 4800, 0x88 }, 318 { 9600, 0x99 }, 319 { 19200, 0xbb }, 320 { 38400, 0xcc }, 321 { -1, -1 } 322 }; 323 324 /* 325 * MultiFaceCard II, I, and SerialMaster 500 326 * baud rate tables for BRG set 2 327 */ 328 329 const struct speedtab mfcs2speedtab2[] = { 330 { 0, 0 }, 331 { 75, 0x00 }, 332 { 100, 0x11 }, 333 { 150, 0x33 }, 334 { 300, 0x44 }, 335 { 600, 0x55 }, 336 { 1200, 0x66 }, 337 { 2400, 0x88 }, 338 { 4800, 0x99 }, 339 { 9600, 0xbb }, 340 { 19200, 0xcc }, 341 { -1, -1 } 342 }; 343 344 /* 345 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 346 */ 347 int 348 mfcmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 349 { 350 struct zbus_args *zap; 351 352 zap = auxp; 353 if (zap->manid == 2092 && 354 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 355 356 return(1); 357 return(0); 358 } 359 360 void 361 mfcattach(struct device *pdp, struct device *dp, void *auxp) 362 { 363 struct mfc_softc *scc; 364 struct zbus_args *zap; 365 struct mfc_args ma; 366 int unit; 367 struct mfc_regs *rp; 368 369 zap = auxp; 370 371 printf ("\n"); 372 373 scc = (struct mfc_softc *)dp; 374 unit = device_unit(&scc->sc_dev); 375 scc->sc_regs = rp = zap->va; 376 if (zap->prodid == 18) 377 scc->mfc_iii = 3; 378 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 379 380 rp->du_opcr = 0x00; /* configure output port? */ 381 rp->du_btrst = 0x0f; /* clear modem lines */ 382 rp->du_ivr = 0; /* IVR */ 383 rp->du_imr = 0; /* IMR */ 384 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 385 rp->du_ctur = 0; 386 rp->du_ctlr = 4; 387 rp->du_csra = 0xcc; /* clock select = 38400 */ 388 rp->du_cra = 0x10; /* reset mode register ptr */ 389 rp->du_cra = 0x20; 390 rp->du_cra = 0x30; 391 rp->du_cra = 0x40; 392 rp->du_mr1a = 0x93; /* MRA1 */ 393 rp->du_mr2a = 0x17; /* MRA2 */ 394 rp->du_csrb = 0xcc; /* clock select = 38400 */ 395 rp->du_crb = 0x10; /* reset mode register ptr */ 396 rp->du_crb = 0x20; 397 rp->du_crb = 0x30; 398 rp->du_crb = 0x40; 399 rp->du_mr1b = 0x93; /* MRB1 */ 400 rp->du_mr2b = 0x17; /* MRB2 */ 401 rp->du_cra = 0x05; /* enable A Rx & Tx */ 402 rp->du_crb = 0x05; /* enable B Rx & Tx */ 403 404 scc->sc_isr.isr_intr = mfcintr; 405 scc->sc_isr.isr_arg = scc; 406 scc->sc_isr.isr_ipl = 6; 407 add_isr(&scc->sc_isr); 408 409 /* configure ports */ 410 bcopy(zap, &ma.zargs, sizeof(struct zbus_args)); 411 ma.subdev = "mfcs"; 412 ma.unit = unit * 2; 413 config_found(dp, &ma, mfcprint); 414 ma.unit = unit * 2 + 1; 415 config_found(dp, &ma, mfcprint); 416 ma.subdev = "mfcp"; 417 ma.unit = unit; 418 config_found(dp, &ma, mfcprint); 419 } 420 421 /* 422 * 423 */ 424 int 425 mfcsmatch(struct device *pdp, struct cfdata *cfp, void *auxp) 426 { 427 struct mfc_args *ma; 428 429 ma = auxp; 430 if (strcmp(ma->subdev, "mfcs") == 0) 431 return (1); 432 return (0); 433 } 434 435 void 436 mfcsattach(struct device *pdp, struct device *dp, void *auxp) 437 { 438 int unit; 439 struct mfcs_softc *sc; 440 struct mfc_softc *scc; 441 struct mfc_args *ma; 442 struct mfc_regs *rp; 443 444 sc = (struct mfcs_softc *) dp; 445 scc = (struct mfc_softc *) pdp; 446 ma = auxp; 447 448 if (dp) { 449 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 450 SEROBUF_SIZE); 451 alloc_sicallback(); 452 } 453 454 unit = ma->unit; 455 mfcs_active |= 1 << unit; 456 sc->rptr = sc->wptr = sc->inbuf; 457 sc->sc_mfc = scc; 458 sc->sc_regs = rp = scc->sc_regs; 459 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? 460 __UNVOLATILE(&rp->du_mr1b) : __UNVOLATILE(&rp->du_mr1a)); 461 /* 462 * should have only one vbl routine to handle all ports? 463 */ 464 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 465 sc->vbl_node.data = (void *) unit; 466 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 467 } 468 469 /* 470 * print diag if pnp is NULL else just extra 471 */ 472 int 473 mfcprint(void *auxp, const char *pnp) 474 { 475 if (pnp == NULL) 476 return(UNCONF); 477 return(QUIET); 478 } 479 480 int 481 mfcsopen(dev_t dev, int flag, int mode, struct lwp *l) 482 { 483 struct tty *tp; 484 struct mfcs_softc *sc; 485 int unit, error, s; 486 487 error = 0; 488 unit = dev & 0x1f; 489 490 if (unit >= mfcs_cd.cd_ndevs || (mfcs_active & (1 << unit)) == 0) 491 return (ENXIO); 492 sc = mfcs_cd.cd_devs[unit]; 493 494 s = spltty(); 495 496 if (sc->sc_tty) 497 tp = sc->sc_tty; 498 else { 499 tp = sc->sc_tty = ttymalloc(); 500 tty_attach(tp); 501 } 502 503 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 504 tp->t_param = mfcsparam; 505 tp->t_dev = dev; 506 tp->t_hwiflow = mfcshwiflow; 507 508 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) { 509 splx(s); 510 return (EBUSY); 511 } 512 513 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 514 ttychars(tp); 515 if (tp->t_ispeed == 0) { 516 /* 517 * only when cleared do we reset to defaults. 518 */ 519 tp->t_iflag = TTYDEF_IFLAG; 520 tp->t_oflag = TTYDEF_OFLAG; 521 tp->t_cflag = TTYDEF_CFLAG; 522 tp->t_lflag = TTYDEF_LFLAG; 523 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 524 } 525 /* 526 * do these all the time 527 */ 528 if (sc->swflags & TIOCFLAG_CLOCAL) 529 tp->t_cflag |= CLOCAL; 530 if (sc->swflags & TIOCFLAG_CRTSCTS) 531 tp->t_cflag |= CRTSCTS; 532 if (sc->swflags & TIOCFLAG_MDMBUF) 533 tp->t_cflag |= MDMBUF; 534 mfcsparam(tp, &tp->t_termios); 535 ttsetwater(tp); 536 537 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 538 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 539 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 540 tp->t_state |= TS_CARR_ON; 541 else 542 tp->t_state &= ~TS_CARR_ON; 543 } 544 545 /* 546 * if NONBLOCK requested, ignore carrier 547 */ 548 if (flag & O_NONBLOCK) 549 goto done; 550 551 /* 552 * block waiting for carrier 553 */ 554 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 555 tp->t_wopen++; 556 error = ttysleep(tp, (caddr_t)&tp->t_rawq, 557 TTIPRI | PCATCH, ttopen, 0); 558 tp->t_wopen--; 559 if (error) { 560 splx(s); 561 return(error); 562 } 563 } 564 done: 565 /* This is a way to handle lost XON characters */ 566 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 567 tp->t_state &= ~TS_TTSTOP; 568 ttstart (tp); 569 } 570 571 splx(s); 572 /* 573 * Reset the tty pointer, as there could have been a dialout 574 * use of the tty with a dialin open waiting. 575 */ 576 tp->t_dev = dev; 577 return tp->t_linesw->l_open(dev, tp); 578 } 579 580 /*ARGSUSED*/ 581 int 582 mfcsclose(dev_t dev, int flag, int mode, struct lwp *l) 583 { 584 struct tty *tp; 585 int unit; 586 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 587 struct mfc_softc *scc= sc->sc_mfc; 588 589 unit = dev & 31; 590 591 tp = sc->sc_tty; 592 tp->t_linesw->l_close(tp, flag); 593 sc->sc_duart->ch_cr = 0x70; /* stop break */ 594 595 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 596 scc->sc_regs->du_imr = scc->imask; 597 if (sc->flags & CT_USED) { 598 --scc->ct_usecnt; 599 sc->flags &= ~CT_USED; 600 } 601 602 /* 603 * If the device is closed, it's close, no matter whether we deal with 604 * modem control signals nor not. 605 */ 606 #if 0 607 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 608 (tp->t_state & TS_ISOPEN) == 0) 609 #endif 610 (void) mfcsmctl(dev, 0, DMSET); 611 ttyclose(tp); 612 #if not_yet 613 if (tp != &mfcs_cons) { 614 remove_vbl_function(&sc->vbl_node); 615 ttyfree(tp); 616 sc->sc_tty = (struct tty *) NULL; 617 } 618 #endif 619 return (0); 620 } 621 622 int 623 mfcsread(dev_t dev, struct uio *uio, int flag) 624 { 625 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 626 struct tty *tp = sc->sc_tty; 627 if (tp == NULL) 628 return(ENXIO); 629 return tp->t_linesw->l_read(tp, uio, flag); 630 } 631 632 int 633 mfcswrite(dev_t dev, struct uio *uio, int flag) 634 { 635 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 636 struct tty *tp = sc->sc_tty; 637 638 if (tp == NULL) 639 return(ENXIO); 640 return tp->t_linesw->l_write(tp, uio, flag); 641 } 642 643 int 644 mfcspoll(dev_t dev, int events, struct lwp *l) 645 { 646 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 647 struct tty *tp = sc->sc_tty; 648 649 if (tp == NULL) 650 return(ENXIO); 651 return ((*tp->t_linesw->l_poll)(tp, events, l)); 652 } 653 654 struct tty * 655 mfcstty(dev_t dev) 656 { 657 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 658 659 return (sc->sc_tty); 660 } 661 662 int 663 mfcsioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct lwp *l) 664 { 665 register struct tty *tp; 666 register int error; 667 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 668 669 tp = sc->sc_tty; 670 if (!tp) 671 return ENXIO; 672 673 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 674 if (error != EPASSTHROUGH) 675 return(error); 676 677 error = ttioctl(tp, cmd, data, flag, l); 678 if (error != EPASSTHROUGH) 679 return(error); 680 681 switch (cmd) { 682 case TIOCSBRK: 683 sc->sc_duart->ch_cr = 0x60; /* start break */ 684 break; 685 686 case TIOCCBRK: 687 sc->sc_duart->ch_cr = 0x70; /* stop break */ 688 break; 689 690 case TIOCSDTR: 691 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 692 break; 693 694 case TIOCCDTR: 695 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 696 break; 697 698 case TIOCMSET: 699 (void) mfcsmctl(dev, *(int *) data, DMSET); 700 break; 701 702 case TIOCMBIS: 703 (void) mfcsmctl(dev, *(int *) data, DMBIS); 704 break; 705 706 case TIOCMBIC: 707 (void) mfcsmctl(dev, *(int *) data, DMBIC); 708 break; 709 710 case TIOCMGET: 711 *(int *)data = mfcsmctl(dev, 0, DMGET); 712 break; 713 case TIOCGFLAGS: 714 *(int *)data = SWFLAGS(dev); 715 break; 716 case TIOCSFLAGS: 717 error = kauth_authorize_device_tty(l->l_cred, 718 KAUTH_DEVICE_TTY_PRIVSET, tp); 719 if (error != 0) 720 return(EPERM); 721 722 sc->swflags = *(int *)data; 723 sc->swflags &= /* only allow valid flags */ 724 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 725 /* XXXX need to change duart parameters? */ 726 break; 727 default: 728 return(EPASSTHROUGH); 729 } 730 731 return(0); 732 } 733 734 int 735 mfcsparam(struct tty *tp, struct termios *t) 736 { 737 int cflag, unit, ospeed; 738 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 739 struct mfc_softc *scc= sc->sc_mfc; 740 741 cflag = t->c_cflag; 742 unit = tp->t_dev & 31; 743 if (sc->flags & CT_USED) { 744 --scc->ct_usecnt; 745 sc->flags &= ~CT_USED; 746 } 747 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 748 mfcs2speedtab2); 749 750 /* 751 * If Baud Rate Generator can't generate requested speed, 752 * try to use the counter/timer. 753 */ 754 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 755 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 756 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 757 ospeed = -1; 758 else { 759 scc->sc_regs->du_ctur = ospeed >> 8; 760 scc->sc_regs->du_ctlr = ospeed; 761 scc->ct_val = ospeed; 762 ++scc->ct_usecnt; 763 sc->flags |= CT_USED; 764 ospeed = 0xdd; 765 } 766 } 767 /* XXXX 68681 duart could handle split speeds */ 768 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 769 return(EINVAL); 770 771 /* XXXX handle parity, character size, stop bits, flow control */ 772 773 /* 774 * copy to tty 775 */ 776 tp->t_ispeed = t->c_ispeed; 777 tp->t_ospeed = t->c_ospeed; 778 tp->t_cflag = cflag; 779 780 /* 781 * enable interrupts 782 */ 783 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 784 scc->sc_regs->du_imr = scc->imask; 785 #if defined(DEBUG) && 0 786 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 787 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 788 #endif 789 if (ospeed == 0) 790 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 791 else { 792 /* 793 * (re)enable DTR 794 * and set baud rate. (8 bit mode) 795 */ 796 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 797 sc->sc_duart->ch_csr = ospeed; 798 } 799 return(0); 800 } 801 802 int 803 mfcshwiflow(struct tty *tp, int flag) 804 { 805 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 806 int unit = tp->t_dev & 1; 807 808 if (flag) 809 sc->sc_regs->du_btrst = 1 << unit; 810 else 811 sc->sc_regs->du_btst = 1 << unit; 812 return 1; 813 } 814 815 void 816 mfcsstart(struct tty *tp) 817 { 818 int cc, s, unit; 819 struct mfcs_softc *sc = mfcs_cd.cd_devs[tp->t_dev & 31]; 820 struct mfc_softc *scc= sc->sc_mfc; 821 822 if ((tp->t_state & TS_ISOPEN) == 0) 823 return; 824 825 unit = tp->t_dev & 1; 826 827 s = splser(); 828 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 829 goto out; 830 831 cc = tp->t_outq.c_cc; 832 if (cc <= tp->t_lowat) { 833 if (tp->t_state & TS_ASLEEP) { 834 tp->t_state &= ~TS_ASLEEP; 835 wakeup((caddr_t) & tp->t_outq); 836 } 837 selwakeup(&tp->t_wsel); 838 } 839 if (cc == 0 || (tp->t_state & TS_BUSY)) 840 goto out; 841 842 /* 843 * We only do bulk transfers if using CTSRTS flow control, not for 844 * (probably sloooow) ixon/ixoff devices. 845 */ 846 if ((tp->t_cflag & CRTSCTS) == 0) 847 cc = 1; 848 849 /* 850 * Limit the amount of output we do in one burst 851 * to prevent hogging the CPU. 852 */ 853 if (cc > SEROBUF_SIZE) 854 cc = SEROBUF_SIZE; 855 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 856 if (cc > 0) { 857 tp->t_state |= TS_BUSY; 858 859 sc->ptr = sc->outbuf; 860 sc->end = sc->outbuf + cc; 861 862 /* 863 * Get first character out, then have TBE-interrupts blow out 864 * further characters, until buffer is empty, and TS_BUSY gets 865 * cleared. 866 */ 867 sc->sc_duart->ch_tb = *sc->ptr++; 868 scc->imask |= 1 << (unit * 4); 869 sc->sc_regs->du_imr = scc->imask; 870 } 871 out: 872 splx(s); 873 } 874 875 /* 876 * Stop output on a line. 877 */ 878 /*ARGSUSED*/ 879 void 880 mfcsstop(struct tty *tp, int flag) 881 { 882 int s; 883 884 s = splser(); 885 if (tp->t_state & TS_BUSY) { 886 if ((tp->t_state & TS_TTSTOP) == 0) 887 tp->t_state |= TS_FLUSH; 888 } 889 splx(s); 890 } 891 892 int 893 mfcsmctl(dev_t dev, int bits, int how) 894 { 895 int unit, s; 896 u_char ub = 0; 897 struct mfcs_softc *sc = mfcs_cd.cd_devs[dev & 31]; 898 899 unit = dev & 1; 900 901 /* 902 * convert TIOCM* mask into CIA mask 903 * which is active low 904 */ 905 if (how != DMGET) { 906 /* 907 * need to save current state of DTR & RTS ? 908 */ 909 if (bits & TIOCM_DTR) 910 ub |= 0x04 << unit; 911 if (bits & TIOCM_RTS) 912 ub |= 0x01 << unit; 913 } 914 s = splser(); 915 switch (how) { 916 case DMSET: 917 sc->sc_regs->du_btst = ub; 918 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 919 break; 920 921 case DMBIC: 922 sc->sc_regs->du_btrst = ub; 923 ub = ~sc->sc_regs->du_ip; 924 break; 925 926 case DMBIS: 927 sc->sc_regs->du_btst = ub; 928 ub = ~sc->sc_regs->du_ip; 929 break; 930 931 case DMGET: 932 ub = ~sc->sc_regs->du_ip; 933 break; 934 } 935 (void)splx(s); 936 937 /* XXXX should keep DTR & RTS states in softc? */ 938 bits = TIOCM_DTR | TIOCM_RTS; 939 if (ub & (1 << unit)) 940 bits |= TIOCM_CTS; 941 if (ub & (4 << unit)) 942 bits |= TIOCM_DSR; 943 if (ub & (0x10 << unit)) 944 bits |= TIOCM_CD; 945 /* XXXX RI is not supported on all boards */ 946 if (sc->sc_regs->pad26 & (1 << unit)) 947 bits |= TIOCM_RI; 948 949 return(bits); 950 } 951 952 /* 953 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 954 */ 955 956 int 957 mfcintr(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 = device_unit(&scc->sc_dev) * 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_linesw ? 1021 (sifunc_t)tp->t_linesw->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_linesw ? 1036 (sifunc_t)tp->t_linesw->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(int unit) 1051 { 1052 int s1, s2, ovfl; 1053 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1054 struct tty *tp = sc->sc_tty; 1055 1056 /* 1057 * Make sure we're not interrupted by another 1058 * vbl, but allow level6 ints 1059 */ 1060 s1 = spltty(); 1061 1062 /* 1063 * pass along any acumulated information 1064 * while input is not blocked 1065 */ 1066 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1067 /* 1068 * no collision with ser_fastint() 1069 */ 1070 mfcseint(unit, *sc->rptr++); 1071 1072 ovfl = 0; 1073 /* lock against mfcs_fastint() */ 1074 s2 = splser(); 1075 --sc->incnt; 1076 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1077 sc->rptr = sc->inbuf; 1078 if (sc->ovfl != 0) { 1079 ovfl = sc->ovfl; 1080 sc->ovfl = 0; 1081 } 1082 splx(s2); 1083 if (ovfl != 0) 1084 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1085 sc->sc_dev.dv_xname, ovfl); 1086 } 1087 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1088 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1089 } 1090 splx(s1); 1091 } 1092 1093 void 1094 mfcseint(int unit, int stat) 1095 { 1096 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1097 struct tty *tp; 1098 u_char ch; 1099 int c; 1100 1101 tp = sc->sc_tty; 1102 ch = stat & 0xff; 1103 c = ch; 1104 1105 if ((tp->t_state & TS_ISOPEN) == 0) { 1106 #ifdef KGDB 1107 extern const struct cdevsw ser_cdevsw; 1108 int maj; 1109 1110 /* we don't care about parity errors */ 1111 maj = cdevsw_lookup_major(&ser_cdevsw); 1112 if (kgdb_dev == makedev(maj, unit) && c == FRAME_END) 1113 kgdb_connect(0); /* trap into kgdb */ 1114 #endif 1115 return; 1116 } 1117 1118 /* 1119 * Check for break and (if enabled) parity error. 1120 */ 1121 if (stat & 0xc000) 1122 c |= TTY_FE; 1123 else if (stat & 0x2000) 1124 c |= TTY_PE; 1125 1126 if (stat & 0x1000) 1127 log(LOG_WARNING, "%s: fifo overflow\n", 1128 ((struct mfcs_softc *)mfcs_cd.cd_devs[unit])->sc_dev.dv_xname); 1129 1130 tp->t_linesw->l_rint(c, tp); 1131 } 1132 1133 /* 1134 * This interrupt is periodically invoked in the vertical blank 1135 * interrupt. It's used to keep track of the modem control lines 1136 * and (new with the fast_int code) to move accumulated data 1137 * up into the tty layer. 1138 */ 1139 void 1140 mfcsmint(int unit) 1141 { 1142 struct tty *tp; 1143 struct mfcs_softc *sc = mfcs_cd.cd_devs[unit]; 1144 u_char stat, last, istat; 1145 1146 tp = sc->sc_tty; 1147 if (!tp) 1148 return; 1149 1150 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 1151 sc->rptr = sc->wptr = sc->inbuf; 1152 sc->incnt = 0; 1153 return; 1154 } 1155 /* 1156 * empty buffer 1157 */ 1158 mfcsxintr(unit); 1159 1160 stat = ~sc->sc_regs->du_ip; 1161 last = sc->sc_mfc->last_ip; 1162 sc->sc_mfc->last_ip = stat; 1163 1164 /* 1165 * check whether any interesting signal changed state 1166 */ 1167 istat = stat ^ last; 1168 1169 if ((istat & (0x10 << (unit & 1))) && /* CD changed */ 1170 (SWFLAGS(tp->t_dev) & TIOCFLAG_SOFTCAR) == 0) { 1171 if (stat & (0x10 << (unit & 1))) 1172 tp->t_linesw->l_modem(tp, 1); 1173 else if (tp->t_linesw->l_modem(tp, 0) == 0) { 1174 sc->sc_regs->du_btrst = 0x0a << (unit & 1); 1175 } 1176 } 1177 } 1178
Indexes created Wed Sep 24 15:09:51 GMT 2025