mfc.c revision 1.56.2.1
1 /* $NetBSD: mfc.c,v 1.56.2.1 2014/08/10 06:53:49 tls 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 * Copyright (c) 1994 Michael L. Hitch 33 * 34 * Redistribution and use in source and binary forms, with or without 35 * modification, are permitted provided that the following conditions 36 * are met: 37 * 1. Redistributions of source code must retain the above copyright 38 * notice, this list of conditions and the following disclaimer. 39 * 2. Redistributions in binary form must reproduce the above copyright 40 * notice, this list of conditions and the following disclaimer in the 41 * documentation and/or other materials provided with the distribution. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 44 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 45 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 46 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 47 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 48 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 52 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53 */ 54 55 #include "opt_kgdb.h" 56 57 #include <sys/cdefs.h> 58 __KERNEL_RCSID(0, "$NetBSD: mfc.c,v 1.56.2.1 2014/08/10 06:53:49 tls Exp $"); 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/device.h> 64 #include <sys/tty.h> 65 #include <sys/proc.h> 66 #include <sys/file.h> 67 #include <sys/uio.h> 68 #include <sys/syslog.h> 69 #include <sys/queue.h> 70 #include <sys/conf.h> 71 #include <sys/kauth.h> 72 #include <machine/cpu.h> 73 #include <amiga/amiga/device.h> 74 #include <amiga/amiga/isr.h> 75 #include <amiga/amiga/custom.h> 76 #include <amiga/amiga/cia.h> 77 #include <amiga/amiga/cc.h> 78 #include <amiga/dev/zbusvar.h> 79 80 #include <dev/cons.h> 81 82 #include "mfcs.h" 83 84 #ifndef SEROBUF_SIZE 85 #define SEROBUF_SIZE 128 86 #endif 87 #ifndef SERIBUF_SIZE 88 #define SERIBUF_SIZE 1024 89 #endif 90 91 #define splser() spl6() 92 93 /* 94 * 68581 DUART registers 95 */ 96 struct mfc_regs { 97 volatile u_char du_mr1a; 98 #define du_mr2a du_mr1a 99 u_char pad0; 100 volatile u_char du_csra; 101 #define du_sra du_csra 102 u_char pad2; 103 volatile u_char du_cra; 104 u_char pad4; 105 volatile u_char du_tba; 106 #define du_rba du_tba 107 u_char pad6; 108 volatile u_char du_acr; 109 #define du_ipcr du_acr 110 u_char pad8; 111 volatile u_char du_imr; 112 #define du_isr du_imr 113 u_char pad10; 114 volatile u_char du_ctur; 115 #define du_cmsb du_ctur 116 u_char pad12; 117 volatile u_char du_ctlr; 118 #define du_clsb du_ctlr 119 u_char pad14; 120 volatile u_char du_mr1b; 121 #define du_mr2b du_mr1b 122 u_char pad16; 123 volatile u_char du_csrb; 124 #define du_srb du_csrb 125 u_char pad18; 126 volatile u_char du_crb; 127 u_char pad20; 128 volatile u_char du_tbb; 129 #define du_rbb du_tbb 130 u_char pad22; 131 volatile u_char du_ivr; 132 u_char pad24; 133 volatile u_char du_opcr; 134 #define du_ip du_opcr 135 u_char pad26; 136 volatile u_char du_btst; 137 #define du_strc du_btst 138 u_char pad28; 139 volatile u_char du_btrst; 140 #define du_stpc du_btrst 141 u_char pad30; 142 }; 143 144 /* 145 * 68681 DUART serial port registers 146 */ 147 struct duart_regs { 148 volatile u_char ch_mr1; 149 #define ch_mr2 ch_mr1 150 u_char pad0; 151 volatile u_char ch_csr; 152 #define ch_sr ch_csr 153 u_char pad1; 154 volatile u_char ch_cr; 155 u_char pad2; 156 volatile u_char ch_tb; 157 #define ch_rb ch_tb 158 u_char pad3; 159 }; 160 161 struct mfc_softc { 162 device_t sc_dev; 163 struct isr sc_isr; 164 struct mfc_regs *sc_regs; 165 u_long clk_frq; 166 u_short ct_val; 167 u_char ct_usecnt; 168 u_char imask; 169 u_char mfc_iii; 170 u_char last_ip; 171 }; 172 173 #if NMFCS > 0 174 struct mfcs_softc { 175 device_t sc_dev; 176 struct tty *sc_tty; 177 struct duart_regs *sc_duart; 178 struct mfc_regs *sc_regs; 179 struct mfc_softc *sc_mfc; 180 int swflags; 181 long flags; /* XXX */ 182 #define CT_USED 1 /* CT in use */ 183 u_short *rptr, *wptr, incnt, ovfl; 184 u_short inbuf[SERIBUF_SIZE]; 185 char *ptr, *end; 186 char outbuf[SEROBUF_SIZE]; 187 struct vbl_node vbl_node; 188 void *mfcs_si; 189 }; 190 #endif 191 192 #if NMFCP > 0 193 struct mfcp_softc { 194 }; 195 #endif 196 197 struct mfc_args { 198 struct zbus_args zargs; 199 const char *subdev; 200 char unit; 201 }; 202 203 int mfcprint(void *, const char *); 204 void mfcattach(device_t, device_t, void *); 205 int mfcmatch(device_t, cfdata_t, void *); 206 207 #if NMFCS > 0 208 int mfcsmatch(device_t, cfdata_t, void *); 209 void mfcsattach(device_t, device_t, void *); 210 int mfcsparam( struct tty *, struct termios *); 211 int mfcshwiflow(struct tty *, int); 212 void mfcsstart(struct tty *); 213 int mfcsmctl(dev_t, int, int); 214 void mfcsxintr(int); 215 void mfcseint(int, int); 216 void mfcsmint(register int); 217 void mfcs_intr_soft(void *); 218 #endif 219 220 #if NMFCP > 0 221 void mfcpattach(device_t, device_t, void *); 222 int mfcpmatch(device_t, cfdata_t, void *); 223 #endif 224 int mfcintr(void *); 225 226 CFATTACH_DECL_NEW(mfc, sizeof(struct mfc_softc), 227 mfcmatch, mfcattach, NULL, NULL); 228 229 #if NMFCS > 0 230 CFATTACH_DECL_NEW(mfcs, sizeof(struct mfcs_softc), 231 mfcsmatch, mfcsattach, NULL, NULL); 232 233 extern struct cfdriver mfcs_cd; 234 #endif 235 236 #if NMFCP > 0 237 CFATTACH_DECL_NEW(mfcp, sizeof(struct mfcp_softc), 238 mfcpmatch, mfcpattach, NULL, NULL); 239 #endif 240 241 dev_type_open(mfcsopen); 242 dev_type_close(mfcsclose); 243 dev_type_read(mfcsread); 244 dev_type_write(mfcswrite); 245 dev_type_ioctl(mfcsioctl); 246 dev_type_stop(mfcsstop); 247 dev_type_tty(mfcstty); 248 dev_type_poll(mfcspoll); 249 250 const struct cdevsw mfcs_cdevsw = { 251 .d_open = mfcsopen, 252 .d_close = mfcsclose, 253 .d_read = mfcsread, 254 .d_write = mfcswrite, 255 .d_ioctl = mfcsioctl, 256 .d_stop = mfcsstop, 257 .d_tty = mfcstty, 258 .d_poll = mfcspoll, 259 .d_mmap = nommap, 260 .d_kqfilter = ttykqfilter, 261 .d_discard = nodiscard, 262 .d_flag = D_TTY 263 }; 264 265 int mfcs_active; 266 int mfcsdefaultrate = 38400 /*TTYDEF_SPEED*/; 267 #define SWFLAGS(dev) (sc->swflags | (((dev) & 0x80) == 0 ? TIOCFLAG_SOFTCAR : 0)) 268 269 #ifdef notyet 270 /* 271 * MultiFaceCard III, II+ (not supported yet), and 272 * SerialMaster 500+ (not supported yet) 273 * baud rate tables for BRG set 1 [not used yet] 274 */ 275 276 const struct speedtab mfcs3speedtab1[] = { 277 { 0, 0 }, 278 { 100, 0x00 }, 279 { 220, 0x11 }, 280 { 600, 0x44 }, 281 { 1200, 0x55 }, 282 { 2400, 0x66 }, 283 { 4800, 0x88 }, 284 { 9600, 0x99 }, 285 { 19200, 0xbb }, 286 { 115200, 0xcc }, 287 { -1, -1 } 288 }; 289 290 /* 291 * MultiFaceCard II, I, and SerialMaster 500 292 * baud rate tables for BRG set 1 [not used yet] 293 */ 294 295 const struct speedtab mfcs2speedtab1[] = { 296 { 0, 0 }, 297 { 50, 0x00 }, 298 { 110, 0x11 }, 299 { 300, 0x44 }, 300 { 600, 0x55 }, 301 { 1200, 0x66 }, 302 { 2400, 0x88 }, 303 { 4800, 0x99 }, 304 { 9600, 0xbb }, 305 { 38400, 0xcc }, 306 { -1, -1 } 307 }; 308 #endif 309 310 /* 311 * MultiFaceCard III, II+ (not supported yet), and 312 * SerialMaster 500+ (not supported yet) 313 * baud rate tables for BRG set 2 314 */ 315 316 const struct speedtab mfcs3speedtab2[] = { 317 { 0, 0 }, 318 { 150, 0x00 }, 319 { 200, 0x11 }, 320 { 300, 0x33 }, 321 { 600, 0x44 }, 322 { 1200, 0x55 }, 323 { 2400, 0x66 }, 324 { 4800, 0x88 }, 325 { 9600, 0x99 }, 326 { 19200, 0xbb }, 327 { 38400, 0xcc }, 328 { -1, -1 } 329 }; 330 331 /* 332 * MultiFaceCard II, I, and SerialMaster 500 333 * baud rate tables for BRG set 2 334 */ 335 336 const struct speedtab mfcs2speedtab2[] = { 337 { 0, 0 }, 338 { 75, 0x00 }, 339 { 100, 0x11 }, 340 { 150, 0x33 }, 341 { 300, 0x44 }, 342 { 600, 0x55 }, 343 { 1200, 0x66 }, 344 { 2400, 0x88 }, 345 { 4800, 0x99 }, 346 { 9600, 0xbb }, 347 { 19200, 0xcc }, 348 { -1, -1 } 349 }; 350 351 /* 352 * if we are an bsc/Alf Data MultFaceCard (I, II, and III) 353 */ 354 int 355 mfcmatch(device_t parent, cfdata_t cf, void *aux) 356 { 357 struct zbus_args *zap; 358 359 zap = aux; 360 if (zap->manid == 2092 && 361 (zap->prodid == 16 || zap->prodid == 17 || zap->prodid == 18)) 362 363 return(1); 364 return(0); 365 } 366 367 void 368 mfcattach(device_t parent, device_t self, void *aux) 369 { 370 struct mfc_softc *scc; 371 struct zbus_args *zap; 372 struct mfc_args ma; 373 int unit; 374 struct mfc_regs *rp; 375 376 zap = aux; 377 378 printf ("\n"); 379 380 scc = device_private(self); 381 scc->sc_dev = self; 382 unit = device_unit(self); 383 scc->sc_regs = rp = zap->va; 384 if (zap->prodid == 18) 385 scc->mfc_iii = 3; 386 scc->clk_frq = scc->mfc_iii ? 230400 : 115200; 387 388 rp->du_opcr = 0x00; /* configure output port? */ 389 rp->du_btrst = 0x0f; /* clear modem lines */ 390 rp->du_ivr = 0; /* IVR */ 391 rp->du_imr = 0; /* IMR */ 392 rp->du_acr = 0xe0; /* baud rate generate set 2 */ 393 rp->du_ctur = 0; 394 rp->du_ctlr = 4; 395 rp->du_csra = 0xcc; /* clock select = 38400 */ 396 rp->du_cra = 0x10; /* reset mode register ptr */ 397 rp->du_cra = 0x20; 398 rp->du_cra = 0x30; 399 rp->du_cra = 0x40; 400 rp->du_mr1a = 0x93; /* MRA1 */ 401 rp->du_mr2a = 0x17; /* MRA2 */ 402 rp->du_csrb = 0xcc; /* clock select = 38400 */ 403 rp->du_crb = 0x10; /* reset mode register ptr */ 404 rp->du_crb = 0x20; 405 rp->du_crb = 0x30; 406 rp->du_crb = 0x40; 407 rp->du_mr1b = 0x93; /* MRB1 */ 408 rp->du_mr2b = 0x17; /* MRB2 */ 409 rp->du_cra = 0x05; /* enable A Rx & Tx */ 410 rp->du_crb = 0x05; /* enable B Rx & Tx */ 411 412 scc->sc_isr.isr_intr = mfcintr; 413 scc->sc_isr.isr_arg = scc; 414 scc->sc_isr.isr_ipl = 6; 415 add_isr(&scc->sc_isr); 416 417 /* configure ports */ 418 memcpy(&ma.zargs, zap, sizeof(struct zbus_args)); 419 ma.subdev = "mfcs"; 420 ma.unit = unit * 2; 421 config_found(self, &ma, mfcprint); 422 ma.unit = unit * 2 + 1; 423 config_found(self, &ma, mfcprint); 424 ma.subdev = "mfcp"; 425 ma.unit = unit; 426 config_found(self, &ma, mfcprint); 427 } 428 429 /* 430 * 431 */ 432 int 433 mfcsmatch(device_t parent, cfdata_t cf, void *aux) 434 { 435 struct mfc_args *ma; 436 437 ma = aux; 438 if (strcmp(ma->subdev, "mfcs") == 0) 439 return (1); 440 return (0); 441 } 442 443 void 444 mfcsattach(device_t parent, device_t self, void *aux) 445 { 446 int unit; 447 struct mfcs_softc *sc; 448 struct mfc_softc *scc; 449 struct mfc_args *ma; 450 struct mfc_regs *rp; 451 452 sc = device_private(self); 453 sc->sc_dev = self; 454 scc = device_private(parent); 455 ma = aux; 456 457 printf (": input fifo %d output fifo %d\n", SERIBUF_SIZE, 458 SEROBUF_SIZE); 459 460 unit = ma->unit; 461 mfcs_active |= 1 << unit; 462 sc->rptr = sc->wptr = sc->inbuf; 463 sc->sc_mfc = scc; 464 sc->sc_regs = rp = scc->sc_regs; 465 sc->sc_duart = (struct duart_regs *) ((unit & 1) ? 466 __UNVOLATILE(&rp->du_mr1b) : __UNVOLATILE(&rp->du_mr1a)); 467 sc->mfcs_si = softint_establish(SOFTINT_SERIAL, mfcs_intr_soft, sc); 468 /* 469 * should have only one vbl routine to handle all ports? 470 */ 471 sc->vbl_node.function = (void (*) (void *)) mfcsmint; 472 sc->vbl_node.data = (void *) unit; 473 add_vbl_function(&sc->vbl_node, 1, (void *) unit); 474 } 475 476 /* 477 * print diag if pnp is NULL else just extra 478 */ 479 int 480 mfcprint(void *aux, const char *pnp) 481 { 482 if (pnp == NULL) 483 return(UNCONF); 484 return(QUIET); 485 } 486 487 int 488 mfcsopen(dev_t dev, int flag, int mode, struct lwp *l) 489 { 490 struct tty *tp; 491 struct mfcs_softc *sc; 492 int unit, error; 493 494 error = 0; 495 unit = dev & 0x1f; 496 497 sc = device_lookup_private(&mfcs_cd, unit); 498 if (sc == NULL || (mfcs_active & (1 << unit)) == 0) 499 return (ENXIO); 500 501 if (sc->sc_tty) 502 tp = sc->sc_tty; 503 else { 504 tp = sc->sc_tty = tty_alloc(); 505 tty_attach(tp); 506 } 507 508 tp->t_oproc = (void (*) (struct tty *)) mfcsstart; 509 tp->t_param = mfcsparam; 510 tp->t_dev = dev; 511 tp->t_hwiflow = mfcshwiflow; 512 513 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 514 return (EBUSY); 515 516 mutex_spin_enter(&tty_lock); 517 if ((tp->t_state & TS_ISOPEN) == 0 && tp->t_wopen == 0) { 518 ttychars(tp); 519 if (tp->t_ispeed == 0) { 520 /* 521 * only when cleared do we reset to defaults. 522 */ 523 tp->t_iflag = TTYDEF_IFLAG; 524 tp->t_oflag = TTYDEF_OFLAG; 525 tp->t_cflag = TTYDEF_CFLAG; 526 tp->t_lflag = TTYDEF_LFLAG; 527 tp->t_ispeed = tp->t_ospeed = mfcsdefaultrate; 528 } 529 /* 530 * do these all the time 531 */ 532 if (sc->swflags & TIOCFLAG_CLOCAL) 533 tp->t_cflag |= CLOCAL; 534 if (sc->swflags & TIOCFLAG_CRTSCTS) 535 tp->t_cflag |= CRTSCTS; 536 if (sc->swflags & TIOCFLAG_MDMBUF) 537 tp->t_cflag |= MDMBUF; 538 mfcsparam(tp, &tp->t_termios); 539 ttsetwater(tp); 540 541 (void)mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMSET); 542 if ((SWFLAGS(dev) & TIOCFLAG_SOFTCAR) || 543 (mfcsmctl(dev, 0, DMGET) & TIOCM_CD)) 544 tp->t_state |= TS_CARR_ON; 545 else 546 tp->t_state &= ~TS_CARR_ON; 547 } 548 549 /* 550 * if NONBLOCK requested, ignore carrier 551 */ 552 if (flag & O_NONBLOCK) 553 goto done; 554 555 /* 556 * block waiting for carrier 557 */ 558 while ((tp->t_state & TS_CARR_ON) == 0 && (tp->t_cflag & CLOCAL) == 0) { 559 tp->t_wopen++; 560 error = ttysleep(tp, &tp->t_rawcv, true, 0); 561 tp->t_wopen--; 562 if (error) { 563 mutex_spin_exit(&tty_lock); 564 return(error); 565 } 566 } 567 done: 568 /* This is a way to handle lost XON characters */ 569 if ((flag & O_TRUNC) && (tp->t_state & TS_TTSTOP)) { 570 tp->t_state &= ~TS_TTSTOP; 571 ttstart (tp); 572 } 573 /* 574 * Reset the tty pointer, as there could have been a dialout 575 * use of the tty with a dialin open waiting. 576 */ 577 tp->t_dev = dev; 578 mutex_spin_exit(&tty_lock); 579 return tp->t_linesw->l_open(dev, tp); 580 } 581 582 /*ARGSUSED*/ 583 int 584 mfcsclose(dev_t dev, int flag, int mode, struct lwp *l) 585 { 586 struct tty *tp; 587 int unit; 588 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 589 struct mfc_softc *scc= sc->sc_mfc; 590 591 unit = dev & 31; 592 593 tp = sc->sc_tty; 594 tp->t_linesw->l_close(tp, flag); 595 sc->sc_duart->ch_cr = 0x70; /* stop break */ 596 597 scc->imask &= ~(0x7 << ((unit & 1) * 4)); 598 scc->sc_regs->du_imr = scc->imask; 599 if (sc->flags & CT_USED) { 600 --scc->ct_usecnt; 601 sc->flags &= ~CT_USED; 602 } 603 604 /* 605 * If the device is closed, it's close, no matter whether we deal with 606 * modem control signals nor not. 607 */ 608 #if 0 609 if (tp->t_cflag & HUPCL || tp->t_wopen != 0 || 610 (tp->t_state & TS_ISOPEN) == 0) 611 #endif 612 (void) mfcsmctl(dev, 0, DMSET); 613 ttyclose(tp); 614 #if not_yet 615 if (tp != &mfcs_cons) { 616 remove_vbl_function(&sc->vbl_node); 617 tty_free(tp); 618 sc->sc_tty = (struct tty *) NULL; 619 } 620 #endif 621 return (0); 622 } 623 624 int 625 mfcsread(dev_t dev, struct uio *uio, int flag) 626 { 627 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 628 struct tty *tp = sc->sc_tty; 629 if (tp == NULL) 630 return(ENXIO); 631 return tp->t_linesw->l_read(tp, uio, flag); 632 } 633 634 int 635 mfcswrite(dev_t dev, struct uio *uio, int flag) 636 { 637 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 638 struct tty *tp = sc->sc_tty; 639 640 if (tp == NULL) 641 return(ENXIO); 642 return tp->t_linesw->l_write(tp, uio, flag); 643 } 644 645 int 646 mfcspoll(dev_t dev, int events, struct lwp *l) 647 { 648 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 649 struct tty *tp = sc->sc_tty; 650 651 if (tp == NULL) 652 return(ENXIO); 653 return ((*tp->t_linesw->l_poll)(tp, events, l)); 654 } 655 656 struct tty * 657 mfcstty(dev_t dev) 658 { 659 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 660 661 return (sc->sc_tty); 662 } 663 664 int 665 mfcsioctl(dev_t dev, u_long cmd, void *data, int flag, struct lwp *l) 666 { 667 register struct tty *tp; 668 register int error; 669 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 670 671 tp = sc->sc_tty; 672 if (!tp) 673 return ENXIO; 674 675 error = tp->t_linesw->l_ioctl(tp, cmd, data, flag, l); 676 if (error != EPASSTHROUGH) 677 return(error); 678 679 error = ttioctl(tp, cmd, data, flag, l); 680 if (error != EPASSTHROUGH) 681 return(error); 682 683 switch (cmd) { 684 case TIOCSBRK: 685 sc->sc_duart->ch_cr = 0x60; /* start break */ 686 break; 687 688 case TIOCCBRK: 689 sc->sc_duart->ch_cr = 0x70; /* stop break */ 690 break; 691 692 case TIOCSDTR: 693 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIS); 694 break; 695 696 case TIOCCDTR: 697 (void) mfcsmctl(dev, TIOCM_DTR | TIOCM_RTS, DMBIC); 698 break; 699 700 case TIOCMSET: 701 (void) mfcsmctl(dev, *(int *) data, DMSET); 702 break; 703 704 case TIOCMBIS: 705 (void) mfcsmctl(dev, *(int *) data, DMBIS); 706 break; 707 708 case TIOCMBIC: 709 (void) mfcsmctl(dev, *(int *) data, DMBIC); 710 break; 711 712 case TIOCMGET: 713 *(int *)data = mfcsmctl(dev, 0, DMGET); 714 break; 715 case TIOCGFLAGS: 716 *(int *)data = SWFLAGS(dev); 717 break; 718 case TIOCSFLAGS: 719 error = kauth_authorize_device_tty(l->l_cred, 720 KAUTH_DEVICE_TTY_PRIVSET, tp); 721 if (error != 0) 722 return(EPERM); 723 724 sc->swflags = *(int *)data; 725 sc->swflags &= /* only allow valid flags */ 726 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | TIOCFLAG_CRTSCTS); 727 /* XXXX need to change duart parameters? */ 728 break; 729 default: 730 return(EPASSTHROUGH); 731 } 732 733 return(0); 734 } 735 736 int 737 mfcsparam(struct tty *tp, struct termios *t) 738 { 739 int cflag, unit, ospeed; 740 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 741 struct mfc_softc *scc= sc->sc_mfc; 742 743 cflag = t->c_cflag; 744 unit = tp->t_dev & 31; 745 if (sc->flags & CT_USED) { 746 --scc->ct_usecnt; 747 sc->flags &= ~CT_USED; 748 } 749 ospeed = ttspeedtab(t->c_ospeed, scc->mfc_iii ? mfcs3speedtab2 : 750 mfcs2speedtab2); 751 752 /* 753 * If Baud Rate Generator can't generate requested speed, 754 * try to use the counter/timer. 755 */ 756 if (ospeed < 0 && (scc->clk_frq % t->c_ospeed) == 0) { 757 ospeed = scc->clk_frq / t->c_ospeed; /* divisor */ 758 if (scc->ct_usecnt > 0 && scc->ct_val != ospeed) 759 ospeed = -1; 760 else { 761 scc->sc_regs->du_ctur = ospeed >> 8; 762 scc->sc_regs->du_ctlr = ospeed; 763 scc->ct_val = ospeed; 764 ++scc->ct_usecnt; 765 sc->flags |= CT_USED; 766 ospeed = 0xdd; 767 } 768 } 769 /* XXXX 68681 duart could handle split speeds */ 770 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 771 return(EINVAL); 772 773 /* XXXX handle parity, character size, stop bits, flow control */ 774 775 /* 776 * copy to tty 777 */ 778 tp->t_ispeed = t->c_ispeed; 779 tp->t_ospeed = t->c_ospeed; 780 tp->t_cflag = cflag; 781 782 /* 783 * enable interrupts 784 */ 785 scc->imask |= (0x2 << ((unit & 1) * 4)) | 0x80; 786 scc->sc_regs->du_imr = scc->imask; 787 #if defined(DEBUG) && 0 788 printf("mfcsparam: speed %d => %x ct %d imask %x cflag %x\n", 789 t->c_ospeed, ospeed, scc->ct_val, scc->imask, cflag); 790 #endif 791 if (ospeed == 0) 792 (void)mfcsmctl(tp->t_dev, 0, DMSET); /* hang up line */ 793 else { 794 /* 795 * (re)enable DTR 796 * and set baud rate. (8 bit mode) 797 */ 798 (void)mfcsmctl(tp->t_dev, TIOCM_DTR | TIOCM_RTS, DMSET); 799 sc->sc_duart->ch_csr = ospeed; 800 } 801 return(0); 802 } 803 804 int 805 mfcshwiflow(struct tty *tp, int flag) 806 { 807 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 808 int unit = tp->t_dev & 1; 809 810 if (flag) 811 sc->sc_regs->du_btrst = 1 << unit; 812 else 813 sc->sc_regs->du_btst = 1 << unit; 814 return 1; 815 } 816 817 void 818 mfcsstart(struct tty *tp) 819 { 820 int cc, s, unit; 821 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, tp->t_dev & 31); 822 struct mfc_softc *scc= sc->sc_mfc; 823 824 if ((tp->t_state & TS_ISOPEN) == 0) 825 return; 826 827 unit = tp->t_dev & 1; 828 829 s = splser(); 830 if (tp->t_state & (TS_TIMEOUT | TS_TTSTOP)) 831 goto out; 832 833 cc = tp->t_outq.c_cc; 834 if (!ttypull(tp) || (tp->t_state & TS_BUSY)) 835 goto out; 836 837 /* 838 * We only do bulk transfers if using CTSRTS flow control, not for 839 * (probably sloooow) ixon/ixoff devices. 840 */ 841 if ((tp->t_cflag & CRTSCTS) == 0) 842 cc = 1; 843 844 /* 845 * Limit the amount of output we do in one burst 846 * to prevent hogging the CPU. 847 */ 848 if (cc > SEROBUF_SIZE) 849 cc = SEROBUF_SIZE; 850 cc = q_to_b(&tp->t_outq, sc->outbuf, cc); 851 if (cc > 0) { 852 tp->t_state |= TS_BUSY; 853 854 sc->ptr = sc->outbuf; 855 sc->end = sc->outbuf + cc; 856 857 /* 858 * Get first character out, then have TBE-interrupts blow out 859 * further characters, until buffer is empty, and TS_BUSY gets 860 * cleared. 861 */ 862 sc->sc_duart->ch_tb = *sc->ptr++; 863 scc->imask |= 1 << (unit * 4); 864 sc->sc_regs->du_imr = scc->imask; 865 } 866 out: 867 splx(s); 868 } 869 870 /* 871 * Stop output on a line. 872 */ 873 /*ARGSUSED*/ 874 void 875 mfcsstop(struct tty *tp, int flag) 876 { 877 int s; 878 879 s = splser(); 880 if (tp->t_state & TS_BUSY) { 881 if ((tp->t_state & TS_TTSTOP) == 0) 882 tp->t_state |= TS_FLUSH; 883 } 884 splx(s); 885 } 886 887 int 888 mfcsmctl(dev_t dev, int bits, int how) 889 { 890 int unit, s; 891 u_char ub = 0; 892 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, dev & 31); 893 894 unit = dev & 1; 895 896 /* 897 * convert TIOCM* mask into CIA mask 898 * which is active low 899 */ 900 if (how != DMGET) { 901 /* 902 * need to save current state of DTR & RTS ? 903 */ 904 if (bits & TIOCM_DTR) 905 ub |= 0x04 << unit; 906 if (bits & TIOCM_RTS) 907 ub |= 0x01 << unit; 908 } 909 s = splser(); 910 switch (how) { 911 case DMSET: 912 sc->sc_regs->du_btst = ub; 913 sc->sc_regs->du_btrst = ub ^ (0x05 << unit); 914 break; 915 916 case DMBIC: 917 sc->sc_regs->du_btrst = ub; 918 ub = ~sc->sc_regs->du_ip; 919 break; 920 921 case DMBIS: 922 sc->sc_regs->du_btst = ub; 923 ub = ~sc->sc_regs->du_ip; 924 break; 925 926 case DMGET: 927 ub = ~sc->sc_regs->du_ip; 928 break; 929 } 930 (void)splx(s); 931 932 /* XXXX should keep DTR & RTS states in softc? */ 933 bits = TIOCM_DTR | TIOCM_RTS; 934 if (ub & (1 << unit)) 935 bits |= TIOCM_CTS; 936 if (ub & (4 << unit)) 937 bits |= TIOCM_DSR; 938 if (ub & (0x10 << unit)) 939 bits |= TIOCM_CD; 940 /* XXXX RI is not supported on all boards */ 941 if (sc->sc_regs->pad26 & (1 << unit)) 942 bits |= TIOCM_RI; 943 944 return(bits); 945 } 946 947 /* 948 * Level 6 interrupt processing for the MultiFaceCard 68681 DUART 949 */ 950 951 int 952 mfcintr(void *arg) 953 { 954 struct mfc_softc *scc = arg; 955 struct mfcs_softc *sc; 956 struct mfc_regs *regs; 957 struct tty *tp; 958 int istat, unit; 959 u_short c; 960 961 regs = scc->sc_regs; 962 istat = regs->du_isr & scc->imask; 963 if (istat == 0) 964 return (0); 965 unit = device_unit(scc->sc_dev) * 2; 966 if (istat & 0x02) { /* channel A receive interrupt */ 967 sc = device_lookup_private(&mfcs_cd, unit); 968 while (1) { 969 c = regs->du_sra << 8; 970 if ((c & 0x0100) == 0) 971 break; 972 c |= regs->du_rba; 973 if (sc->incnt == SERIBUF_SIZE) 974 ++sc->ovfl; 975 else { 976 *sc->wptr++ = c; 977 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 978 sc->wptr = sc->inbuf; 979 ++sc->incnt; 980 if (sc->incnt > SERIBUF_SIZE - 16) 981 regs->du_btrst = 1; 982 } 983 if (c & 0x1000) 984 regs->du_cra = 0x40; 985 } 986 } 987 if (istat & 0x20) { /* channel B receive interrupt */ 988 sc = device_lookup_private(&mfcs_cd, unit + 1); 989 while (1) { 990 c = regs->du_srb << 8; 991 if ((c & 0x0100) == 0) 992 break; 993 c |= regs->du_rbb; 994 if (sc->incnt == SERIBUF_SIZE) 995 ++sc->ovfl; 996 else { 997 *sc->wptr++ = c; 998 if (sc->wptr == sc->inbuf + SERIBUF_SIZE) 999 sc->wptr = sc->inbuf; 1000 ++sc->incnt; 1001 if (sc->incnt > SERIBUF_SIZE - 16) 1002 regs->du_btrst = 2; 1003 } 1004 if (c & 0x1000) 1005 regs->du_crb = 0x40; 1006 } 1007 } 1008 if (istat & 0x01) { /* channel A transmit interrupt */ 1009 sc = device_lookup_private(&mfcs_cd, unit); 1010 tp = sc->sc_tty; 1011 if (sc->ptr == sc->end) { 1012 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1013 scc->imask &= ~0x01; 1014 regs->du_imr = scc->imask; 1015 softint_schedule(sc->mfcs_si); 1016 } 1017 else 1018 regs->du_tba = *sc->ptr++; 1019 } 1020 if (istat & 0x10) { /* channel B transmit interrupt */ 1021 sc = device_lookup_private(&mfcs_cd, unit + 1); 1022 tp = sc->sc_tty; 1023 if (sc->ptr == sc->end) { 1024 tp->t_state &= ~(TS_BUSY | TS_FLUSH); 1025 scc->imask &= ~0x10; 1026 regs->du_imr = scc->imask; 1027 softint_schedule(sc->mfcs_si); 1028 } 1029 else 1030 regs->du_tbb = *sc->ptr++; 1031 } 1032 if (istat & 0x80) { /* input port change interrupt */ 1033 c = regs->du_ipcr; 1034 printf ("%s: ipcr %02x", device_xname(scc->sc_dev), c); 1035 } 1036 return(1); 1037 } 1038 1039 void 1040 mfcsxintr(int unit) 1041 { 1042 int s1, s2, ovfl; 1043 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, unit); 1044 struct tty *tp = sc->sc_tty; 1045 1046 /* 1047 * Make sure we're not interrupted by another 1048 * vbl, but allow level6 ints 1049 */ 1050 s1 = spltty(); 1051 1052 /* 1053 * pass along any acumulated information 1054 * while input is not blocked 1055 */ 1056 while (sc->incnt && (tp->t_state & TS_TBLOCK) == 0) { 1057 /* 1058 * no collision with ser_fastint() 1059 */ 1060 mfcseint(unit, *sc->rptr++); 1061 1062 ovfl = 0; 1063 /* lock against mfcs_fastint() */ 1064 s2 = splser(); 1065 --sc->incnt; 1066 if (sc->rptr == sc->inbuf + SERIBUF_SIZE) 1067 sc->rptr = sc->inbuf; 1068 if (sc->ovfl != 0) { 1069 ovfl = sc->ovfl; 1070 sc->ovfl = 0; 1071 } 1072 splx(s2); 1073 if (ovfl != 0) 1074 log(LOG_WARNING, "%s: %d buffer overflow!\n", 1075 device_xname(sc->sc_dev), ovfl); 1076 } 1077 if (sc->incnt == 0 && (tp->t_state & TS_TBLOCK) == 0) { 1078 sc->sc_regs->du_btst = 1 << unit; /* XXXX */ 1079 } 1080 splx(s1); 1081 } 1082 1083 void 1084 mfcseint(int unit, int stat) 1085 { 1086 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, unit); 1087 struct tty *tp; 1088 u_char ch; 1089 int c; 1090 1091 tp = sc->sc_tty; 1092 ch = stat & 0xff; 1093 c = ch; 1094 1095 if ((tp->t_state & TS_ISOPEN) == 0) { 1096 #ifdef KGDB 1097 extern const struct cdevsw ser_cdevsw; 1098 int maj; 1099 1100 /* we don't care about parity errors */ 1101 maj = cdevsw_lookup_major(&ser_cdevsw); 1102 if (kgdb_dev == makedev(maj, unit) && c == FRAME_END) 1103 kgdb_connect(0); /* trap into kgdb */ 1104 #endif 1105 return; 1106 } 1107 1108 /* 1109 * Check for break and (if enabled) parity error. 1110 */ 1111 if (stat & 0xc000) 1112 c |= TTY_FE; 1113 else if (stat & 0x2000) 1114 c |= TTY_PE; 1115 1116 if (stat & 0x1000) 1117 log(LOG_WARNING, "%s: fifo overflow\n", 1118 device_xname(device_lookup_private(&mfcs_cd, unit))); 1119 1120 tp->t_linesw->l_rint(c, tp); 1121 } 1122 1123 /* 1124 * This interrupt is periodically invoked in the vertical blank 1125 * interrupt. It's used to keep track of the modem control lines 1126 * and (new with the fast_int code) to move accumulated data 1127 * up into the tty layer. 1128 */ 1129 void 1130 mfcsmint(int unit) 1131 { 1132 struct tty *tp; 1133 struct mfcs_softc *sc = device_lookup_private(&mfcs_cd, 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 1169 void 1170 mfcs_intr_soft(void *arg) 1171 { 1172 struct mfcs_softc *sc = (struct mfcs_softc *)arg; 1173 struct tty *tp = sc->sc_tty; 1174 1175 if (tp->t_linesw) 1176 tp->t_linesw->l_start(tp); 1177 else 1178 mfcsstart(tp); 1179 } 1180
Indexes created Thu Oct 02 01:09:59 GMT 2025