sab.c revision 1.19
1 /* $NetBSD: sab.c,v 1.19 2004/07/19 00:28:42 heas Exp $ */ 2 /* $OpenBSD: sab.c,v 1.7 2002/04/08 17:49:42 jason Exp $ */ 3 4 /* 5 * Copyright (c) 2001 Jason L. Wright (jason (at) thought.net) 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 Jason L. Wright 19 * 4. The name of the author may not be used to endorse or promote products 20 * derived from this software without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 25 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 26 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 27 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 28 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 30 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 * 34 * Effort sponsored in part by the Defense Advanced Research Projects 35 * Agency (DARPA) and Air Force Research Laboratory, Air Force 36 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 37 * 38 */ 39 40 /* 41 * SAB82532 Dual UART driver 42 */ 43 44 #include <sys/cdefs.h> 45 __KERNEL_RCSID(0, "$NetBSD: sab.c,v 1.19 2004/07/19 00:28:42 heas Exp $"); 46 47 #include <sys/types.h> 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/device.h> 51 #include <sys/conf.h> 52 #include <sys/file.h> 53 #include <sys/ioctl.h> 54 #include <sys/kernel.h> 55 #include <sys/proc.h> 56 #include <sys/tty.h> 57 #include <sys/syslog.h> 58 59 #include <machine/autoconf.h> 60 #include <machine/openfirm.h> 61 62 #include <dev/cons.h> 63 64 #include <dev/ebus/ebusreg.h> 65 #include <dev/ebus/ebusvar.h> 66 #include <sparc64/dev/sab82532reg.h> 67 68 #define SABUNIT(x) (minor(x) & 0x7ffff) 69 #define SABDIALOUT(x) (minor(x) & 0x80000) 70 71 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 72 73 struct sab_softc { 74 struct device sc_dv; 75 struct intrhand * sc_ih; 76 bus_space_tag_t sc_bt; 77 bus_space_handle_t sc_bh; 78 struct sabtty_softc * sc_child[SAB_NCHAN]; 79 u_int sc_nchild; 80 void * sc_softintr; 81 int sc_node; 82 }; 83 84 struct sabtty_attach_args { 85 u_int sbt_portno; 86 }; 87 88 struct sabtty_softc { 89 struct device sc_dv; 90 struct sab_softc * sc_parent; 91 bus_space_tag_t sc_bt; 92 bus_space_handle_t sc_bh; 93 struct tty * sc_tty; 94 u_int sc_portno; 95 u_int8_t sc_pvr_dtr, sc_pvr_dsr; 96 u_int8_t sc_imr0, sc_imr1; 97 int sc_openflags; 98 u_char * sc_txp; 99 int sc_txc; 100 int sc_flags; 101 #define SABTTYF_STOP 0x01 102 #define SABTTYF_DONE 0x02 103 #define SABTTYF_RINGOVERFLOW 0x04 104 #define SABTTYF_CDCHG 0x08 105 #define SABTTYF_CONS_IN 0x10 106 #define SABTTYF_CONS_OUT 0x20 107 #define SABTTYF_TXDRAIN 0x40 108 #define SABTTYF_DONTDDB 0x80 109 u_int8_t sc_rbuf[SABTTY_RBUF_SIZE]; 110 u_int8_t *sc_rend, *sc_rput, *sc_rget; 111 u_int8_t sc_polling, sc_pollrfc; 112 }; 113 114 struct sabtty_softc *sabtty_cons_input; 115 struct sabtty_softc *sabtty_cons_output; 116 117 #define SAB_READ(sc,r) \ 118 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 119 #define SAB_WRITE(sc,r,v) \ 120 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 121 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 122 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 123 124 int sab_match(struct device *, struct cfdata *, void *); 125 void sab_attach(struct device *, struct device *, void *); 126 int sab_print(void *, const char *); 127 int sab_intr(void *); 128 129 void sab_softintr(void *); 130 void sab_cnputc(dev_t, int); 131 int sab_cngetc(dev_t); 132 void sab_cnpollc(dev_t, int); 133 134 int sabtty_match(struct device *, struct cfdata *, void *); 135 void sabtty_attach(struct device *, struct device *, void *); 136 void sabtty_start(struct tty *); 137 int sabtty_param(struct tty *, struct termios *); 138 int sabtty_intr(struct sabtty_softc *, int *); 139 void sabtty_softintr(struct sabtty_softc *); 140 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 141 void sabtty_cec_wait(struct sabtty_softc *); 142 void sabtty_tec_wait(struct sabtty_softc *); 143 void sabtty_reset(struct sabtty_softc *); 144 void sabtty_flush(struct sabtty_softc *); 145 int sabtty_speed(int); 146 void sabtty_console_flags(struct sabtty_softc *); 147 void sabtty_cnpollc(struct sabtty_softc *, int); 148 void sabtty_shutdown(void *); 149 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 150 151 void sabtty_cnputc(struct sabtty_softc *, int); 152 int sabtty_cngetc(struct sabtty_softc *); 153 154 CFATTACH_DECL(sab, sizeof(struct sab_softc), 155 sab_match, sab_attach, NULL, NULL); 156 157 extern struct cfdriver sab_cd; 158 159 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 160 sabtty_match, sabtty_attach, NULL, NULL); 161 162 extern struct cfdriver sabtty_cd; 163 164 dev_type_open(sabopen); 165 dev_type_close(sabclose); 166 dev_type_read(sabread); 167 dev_type_write(sabwrite); 168 dev_type_ioctl(sabioctl); 169 dev_type_stop(sabstop); 170 dev_type_tty(sabtty); 171 dev_type_poll(sabpoll); 172 173 static struct cnm_state sabtty_cnm_state; 174 175 const struct cdevsw sabtty_cdevsw = { 176 sabopen, sabclose, sabread, sabwrite, sabioctl, 177 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 178 }; 179 180 struct sabtty_rate { 181 int baud; 182 int n, m; 183 }; 184 185 struct sabtty_rate sabtty_baudtable[] = { 186 { 50, 35, 10 }, 187 { 75, 47, 9 }, 188 { 110, 32, 9 }, 189 { 134, 53, 8 }, 190 { 150, 47, 8 }, 191 { 200, 35, 8 }, 192 { 300, 47, 7 }, 193 { 600, 47, 6 }, 194 { 1200, 47, 5 }, 195 { 1800, 31, 5 }, 196 { 2400, 47, 4 }, 197 { 4800, 47, 3 }, 198 { 9600, 47, 2 }, 199 { 19200, 47, 1 }, 200 { 38400, 23, 1 }, 201 { 57600, 15, 1 }, 202 { 115200, 7, 1 }, 203 { 230400, 3, 1 }, 204 { 460800, 1, 1 }, 205 { 76800, 11, 1 }, 206 { 153600, 5, 1 }, 207 { 307200, 3, 1 }, 208 { 614400, 3, 0 }, 209 { 921600, 0, 1 }, 210 }; 211 212 int 213 sab_match(parent, match, aux) 214 struct device *parent; 215 struct cfdata *match; 216 void *aux; 217 { 218 struct ebus_attach_args *ea = aux; 219 char *compat; 220 221 if (strcmp(ea->ea_name, "se") == 0) 222 return (1); 223 224 compat = prom_getpropstring(ea->ea_node, "compatible"); 225 if (compat != NULL && !strcmp(compat, "sab82532")) 226 return (1); 227 228 return (0); 229 } 230 231 void 232 sab_attach(parent, self, aux) 233 struct device *parent; 234 struct device *self; 235 void *aux; 236 { 237 struct sab_softc *sc = (struct sab_softc *)self; 238 struct ebus_attach_args *ea = aux; 239 u_int8_t r; 240 u_int i; 241 242 sc->sc_bt = ea->ea_bustag; 243 sc->sc_node = ea->ea_node; 244 245 /* Use prom mapping, if available. */ 246 if (ea->ea_nvaddr) 247 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], &sc->sc_bh); 248 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 249 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 250 printf(": can't map register space\n"); 251 return; 252 } 253 254 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 255 IPL_TTY, sab_intr, sc); 256 if (sc->sc_ih == NULL) { 257 printf(": can't map interrupt\n"); 258 return; 259 } 260 261 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 262 if (sc->sc_softintr == NULL) { 263 printf(": can't get soft intr\n"); 264 return; 265 } 266 267 aprint_normal(": rev "); 268 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 269 switch (r) { 270 case SAB_VSTR_V_1: 271 aprint_normal("1"); 272 break; 273 case SAB_VSTR_V_2: 274 aprint_normal("2"); 275 break; 276 case SAB_VSTR_V_32: 277 aprint_normal("3.2"); 278 break; 279 default: 280 aprint_normal("unknown(0x%x)", r); 281 break; 282 } 283 aprint_normal("\n"); 284 285 /* Let current output drain */ 286 DELAY(100000); 287 288 /* Set all pins, except DTR pins to be inputs */ 289 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 290 /* Disable port interrupts */ 291 SAB_WRITE(sc, SAB_PIM, 0xff); 292 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 293 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 294 295 for (i = 0; i < SAB_NCHAN; i++) { 296 struct sabtty_attach_args sta; 297 298 sta.sbt_portno = i; 299 sc->sc_child[i] = (struct sabtty_softc *)config_found_sm(self, 300 &sta, sab_print, sabtty_match); 301 if (sc->sc_child[i] != NULL) 302 sc->sc_nchild++; 303 } 304 } 305 306 int 307 sab_print(args, name) 308 void *args; 309 const char *name; 310 { 311 struct sabtty_attach_args *sa = args; 312 313 if (name) 314 aprint_normal("sabtty at %s", name); 315 aprint_normal(" port %u", sa->sbt_portno); 316 return (UNCONF); 317 } 318 319 int 320 sab_intr(vsc) 321 void *vsc; 322 { 323 struct sab_softc *sc = vsc; 324 int r = 0, needsoft = 0; 325 u_int8_t gis; 326 327 gis = SAB_READ(sc, SAB_GIS); 328 329 /* channel A */ 330 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 331 sc->sc_child[0]->sc_tty) 332 r |= sabtty_intr(sc->sc_child[0], &needsoft); 333 334 /* channel B */ 335 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 336 sc->sc_child[1]->sc_tty) 337 r |= sabtty_intr(sc->sc_child[1], &needsoft); 338 339 if (needsoft) 340 softintr_schedule(sc->sc_softintr); 341 342 return (r); 343 } 344 345 void 346 sab_softintr(vsc) 347 void *vsc; 348 { 349 struct sab_softc *sc = vsc; 350 351 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 352 sabtty_softintr(sc->sc_child[0]); 353 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 354 sabtty_softintr(sc->sc_child[1]); 355 } 356 357 int 358 sabtty_match(parent, match, aux) 359 struct device *parent; 360 struct cfdata *match; 361 void *aux; 362 { 363 struct sabtty_attach_args *sa = aux; 364 365 if (sa->sbt_portno < SAB_NCHAN) 366 return (1); 367 return (0); 368 } 369 370 void 371 sabtty_attach(parent, self, aux) 372 struct device *parent; 373 struct device *self; 374 void *aux; 375 { 376 struct sabtty_softc *sc = (struct sabtty_softc *)self; 377 struct sabtty_attach_args *sa = aux; 378 int r; 379 int maj; 380 381 sc->sc_tty = ttymalloc(); 382 if (sc->sc_tty == NULL) { 383 aprint_normal(": failed to allocate tty\n"); 384 return; 385 } 386 tty_attach(sc->sc_tty); 387 sc->sc_tty->t_oproc = sabtty_start; 388 sc->sc_tty->t_param = sabtty_param; 389 390 sc->sc_parent = (struct sab_softc *)parent; 391 sc->sc_bt = sc->sc_parent->sc_bt; 392 sc->sc_portno = sa->sbt_portno; 393 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 394 395 switch (sa->sbt_portno) { 396 case 0: /* port A */ 397 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 398 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 399 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 400 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 401 break; 402 case 1: /* port B */ 403 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 404 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 405 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 406 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 407 break; 408 default: 409 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 410 return; 411 } 412 if (r != 0) { 413 aprint_normal(": failed to allocate register subregion\n"); 414 return; 415 } 416 417 sabtty_console_flags(sc); 418 419 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 420 struct termios t; 421 char *acc; 422 423 /* Let residual prom output drain */ 424 DELAY(100000); 425 426 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 427 case SABTTYF_CONS_IN: 428 acc = "input"; 429 break; 430 case SABTTYF_CONS_OUT: 431 acc = "output"; 432 break; 433 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 434 default: 435 acc = "i/o"; 436 break; 437 } 438 439 t.c_ispeed= 0; 440 t.c_ospeed = 9600; 441 t.c_cflag = CREAD | CS8 | HUPCL; 442 sc->sc_tty->t_ospeed = 0; 443 sabttyparam(sc, sc->sc_tty, &t); 444 445 if (sc->sc_flags & SABTTYF_CONS_IN) { 446 sabtty_cons_input = sc; 447 cn_tab->cn_pollc = sab_cnpollc; 448 cn_tab->cn_getc = sab_cngetc; 449 maj = cdevsw_lookup_major(&sabtty_cdevsw); 450 cn_tab->cn_dev = makedev(maj, self->dv_unit); 451 shutdownhook_establish(sabtty_shutdown, sc); 452 cn_init_magic(&sabtty_cnm_state); 453 cn_set_magic("\047\001"); /* default magic is BREAK */ 454 } 455 456 if (sc->sc_flags & SABTTYF_CONS_OUT) { 457 sabtty_tec_wait(sc); 458 sabtty_cons_output = sc; 459 cn_tab->cn_putc = sab_cnputc; 460 maj = cdevsw_lookup_major(&sabtty_cdevsw); 461 cn_tab->cn_dev = makedev(maj, self->dv_unit); 462 } 463 aprint_normal(": console %s", acc); 464 } else { 465 /* Not a console... */ 466 sabtty_reset(sc); 467 } 468 469 aprint_normal("\n"); 470 } 471 472 int 473 sabtty_intr(sc, needsoftp) 474 struct sabtty_softc *sc; 475 int *needsoftp; 476 { 477 u_int8_t isr0, isr1; 478 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 479 480 isr0 = SAB_READ(sc, SAB_ISR0); 481 isr1 = SAB_READ(sc, SAB_ISR1); 482 483 if (isr0 || isr1) 484 r = 1; 485 486 if (isr0 & SAB_ISR0_RPF) { 487 len = 32; 488 clearfifo = 1; 489 } 490 if (isr0 & SAB_ISR0_TCD) { 491 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 492 clearfifo = 1; 493 } 494 if (isr0 & SAB_ISR0_TIME) { 495 sabtty_cec_wait(sc); 496 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 497 } 498 if (isr0 & SAB_ISR0_RFO) { 499 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 500 clearfifo = 1; 501 } 502 if (len != 0) { 503 u_int8_t *ptr, b; 504 505 ptr = sc->sc_rput; 506 for (i = 0; i < len; i++) { 507 b = SAB_READ(sc, SAB_RFIFO); 508 if (i % 2 == 0) /* skip status byte */ 509 cn_check_magic(sc->sc_tty->t_dev, 510 b, sabtty_cnm_state); 511 *ptr++ = b; 512 if (ptr == sc->sc_rend) 513 ptr = sc->sc_rbuf; 514 if (ptr == sc->sc_rget) { 515 if (ptr == sc->sc_rbuf) 516 ptr = sc->sc_rend; 517 ptr--; 518 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 519 } 520 } 521 sc->sc_rput = ptr; 522 needsoft = 1; 523 } 524 525 if (clearfifo) { 526 sabtty_cec_wait(sc); 527 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 528 } 529 530 if (isr0 & SAB_ISR0_CDSC) { 531 sc->sc_flags |= SABTTYF_CDCHG; 532 needsoft = 1; 533 } 534 535 if (isr1 & SAB_ISR1_BRKT) 536 cn_check_magic(sc->sc_tty->t_dev, 537 CNC_BREAK, sabtty_cnm_state); 538 539 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 540 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 541 (sc->sc_flags & SABTTYF_STOP) == 0) { 542 if (sc->sc_txc < 32) 543 len = sc->sc_txc; 544 else 545 len = 32; 546 547 if (len > 0) { 548 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 549 sc->sc_txp += len; 550 sc->sc_txc -= len; 551 552 sabtty_cec_wait(sc); 553 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 554 555 /* 556 * Prevent the false end of xmit from 557 * confusing things below. 558 */ 559 isr1 &= ~SAB_ISR1_ALLS; 560 } 561 } 562 563 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 564 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 565 sc->sc_imr1 |= SAB_IMR1_XPR; 566 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 567 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 568 } 569 } 570 } 571 572 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 573 (sc->sc_flags & SABTTYF_STOP))) { 574 if (sc->sc_flags & SABTTYF_TXDRAIN) 575 wakeup(sc); 576 sc->sc_flags &= ~SABTTYF_STOP; 577 sc->sc_flags |= SABTTYF_DONE; 578 sc->sc_imr1 |= SAB_IMR1_ALLS; 579 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 580 needsoft = 1; 581 } 582 583 if (needsoft) 584 *needsoftp = needsoft; 585 return (r); 586 } 587 588 void 589 sabtty_softintr(sc) 590 struct sabtty_softc *sc; 591 { 592 struct tty *tp = sc->sc_tty; 593 int s, flags; 594 u_int8_t r; 595 596 if (tp == NULL) 597 return; 598 599 if ((tp->t_state & TS_ISOPEN) == 0) 600 return; 601 602 while (sc->sc_rget != sc->sc_rput) { 603 int data; 604 u_int8_t stat; 605 606 data = sc->sc_rget[0]; 607 stat = sc->sc_rget[1]; 608 sc->sc_rget += 2; 609 if (stat & SAB_RSTAT_PE) 610 data |= TTY_PE; 611 if (stat & SAB_RSTAT_FE) 612 data |= TTY_FE; 613 if (sc->sc_rget == sc->sc_rend) 614 sc->sc_rget = sc->sc_rbuf; 615 616 (*tp->t_linesw->l_rint)(data, tp); 617 } 618 619 s = splhigh(); 620 flags = sc->sc_flags; 621 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 622 splx(s); 623 624 if (flags & SABTTYF_CDCHG) { 625 s = spltty(); 626 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 627 splx(s); 628 629 (*tp->t_linesw->l_modem)(tp, r); 630 } 631 632 if (flags & SABTTYF_RINGOVERFLOW) 633 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 634 635 if (flags & SABTTYF_DONE) { 636 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 637 tp->t_state &= ~TS_BUSY; 638 (*tp->t_linesw->l_start)(tp); 639 } 640 } 641 642 int 643 sabopen(dev, flags, mode, p) 644 dev_t dev; 645 int flags, mode; 646 struct proc *p; 647 { 648 struct sabtty_softc *sc; 649 struct tty *tp; 650 int s, s1; 651 652 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 653 if (sc == NULL) 654 return (ENXIO); 655 656 tp = sc->sc_tty; 657 tp->t_dev = dev; 658 659 if ((tp->t_state & TS_ISOPEN) == 0) { 660 ttychars(tp); 661 tp->t_iflag = TTYDEF_IFLAG; 662 tp->t_oflag = TTYDEF_OFLAG; 663 tp->t_cflag = TTYDEF_CFLAG; 664 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 665 tp->t_cflag |= CLOCAL; 666 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 667 tp->t_cflag |= CRTSCTS; 668 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 669 tp->t_cflag |= MDMBUF; 670 tp->t_lflag = TTYDEF_LFLAG; 671 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 672 673 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 674 675 s = spltty(); 676 677 ttsetwater(tp); 678 679 s1 = splhigh(); 680 sabtty_reset(sc); 681 sabtty_param(tp, &tp->t_termios); 682 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 683 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 684 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 685 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 686 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 687 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 688 sabtty_cec_wait(sc); 689 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 690 sabtty_cec_wait(sc); 691 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 692 sabtty_cec_wait(sc); 693 splx(s1); 694 695 sabtty_flush(sc); 696 697 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 698 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 699 tp->t_state |= TS_CARR_ON; 700 else 701 tp->t_state &= ~TS_CARR_ON; 702 } else if ((tp->t_state & TS_XCLUDE) && 703 (!suser(p->p_ucred, &p->p_acflag))) { 704 return (EBUSY); 705 } else { 706 s = spltty(); 707 } 708 709 if ((flags & O_NONBLOCK) == 0) { 710 while ((tp->t_cflag & CLOCAL) == 0 && 711 (tp->t_state & TS_CARR_ON) == 0) { 712 int error; 713 714 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 715 "sabttycd", 0); 716 if (error != 0) { 717 splx(s); 718 return (error); 719 } 720 } 721 } 722 723 splx(s); 724 725 s = (*tp->t_linesw->l_open)(dev, tp); 726 if (s != 0) { 727 if (tp->t_state & TS_ISOPEN) 728 return (s); 729 730 if (tp->t_cflag & HUPCL) { 731 sabtty_mdmctrl(sc, 0, DMSET); 732 (void)tsleep(sc, TTIPRI, ttclos, hz); 733 } 734 735 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 736 /* Flush and power down if we're not the console */ 737 sabtty_flush(sc); 738 sabtty_reset(sc); 739 } 740 } 741 return (s); 742 } 743 744 int 745 sabclose(dev, flags, mode, p) 746 dev_t dev; 747 int flags, mode; 748 struct proc *p; 749 { 750 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 751 struct sab_softc *bc = sc->sc_parent; 752 struct tty *tp = sc->sc_tty; 753 int s; 754 755 (*tp->t_linesw->l_close)(tp, flags); 756 757 s = spltty(); 758 759 if ((tp->t_state & TS_ISOPEN) == 0) { 760 /* Wait for output drain */ 761 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 762 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 763 sc->sc_flags |= SABTTYF_TXDRAIN; 764 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 765 sc->sc_imr1 |= SAB_IMR1_ALLS; 766 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 767 sc->sc_flags &= ~SABTTYF_TXDRAIN; 768 769 if (tp->t_cflag & HUPCL) { 770 sabtty_mdmctrl(sc, 0, DMSET); 771 (void)tsleep(bc, TTIPRI, ttclos, hz); 772 } 773 774 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 775 /* Flush and power down if we're not the console */ 776 sabtty_flush(sc); 777 sabtty_reset(sc); 778 } 779 } 780 781 ttyclose(tp); 782 splx(s); 783 784 return (0); 785 } 786 787 int 788 sabread(dev, uio, flags) 789 dev_t dev; 790 struct uio *uio; 791 int flags; 792 { 793 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 794 struct tty *tp = sc->sc_tty; 795 796 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 797 } 798 799 int 800 sabwrite(dev, uio, flags) 801 dev_t dev; 802 struct uio *uio; 803 int flags; 804 { 805 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 806 struct tty *tp = sc->sc_tty; 807 808 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 809 } 810 811 int 812 sabioctl(dev, cmd, data, flags, p) 813 dev_t dev; 814 u_long cmd; 815 caddr_t data; 816 int flags; 817 struct proc *p; 818 { 819 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 820 struct tty *tp = sc->sc_tty; 821 int error; 822 823 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 824 if (error >= 0) 825 return (error); 826 827 error = ttioctl(tp, cmd, data, flags, p); 828 if (error >= 0) 829 return (error); 830 831 error = 0; 832 833 switch (cmd) { 834 case TIOCSBRK: 835 SAB_WRITE(sc, SAB_DAFO, 836 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 837 break; 838 case TIOCCBRK: 839 SAB_WRITE(sc, SAB_DAFO, 840 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 841 break; 842 case TIOCSDTR: 843 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 844 break; 845 case TIOCCDTR: 846 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 847 break; 848 case TIOCMBIS: 849 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 850 break; 851 case TIOCMBIC: 852 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 853 break; 854 case TIOCMGET: 855 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 856 break; 857 case TIOCMSET: 858 sabtty_mdmctrl(sc, *((int *)data), DMSET); 859 break; 860 case TIOCGFLAGS: 861 *((int *)data) = sc->sc_openflags; 862 break; 863 case TIOCSFLAGS: 864 if (suser(p->p_ucred, &p->p_acflag)) 865 error = EPERM; 866 else 867 sc->sc_openflags = *((int *)data) & 868 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 869 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 870 break; 871 default: 872 error = ENOTTY; 873 } 874 875 return (error); 876 } 877 878 struct tty * 879 sabtty(dev) 880 dev_t dev; 881 { 882 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 883 884 return (sc->sc_tty); 885 } 886 887 void 888 sabstop(tp, flag) 889 struct tty *tp; 890 int flag; 891 { 892 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 893 int s; 894 895 s = spltty(); 896 if (tp->t_state & TS_BUSY) { 897 if ((tp->t_state & TS_TTSTOP) == 0) 898 tp->t_state |= TS_FLUSH; 899 sc->sc_flags |= SABTTYF_STOP; 900 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 901 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 902 } 903 splx(s); 904 } 905 906 int 907 sabpoll(dev, events, p) 908 dev_t dev; 909 int events; 910 struct proc *p; 911 { 912 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 913 struct tty *tp = sc->sc_tty; 914 915 return ((*tp->t_linesw->l_poll)(tp, events, p)); 916 } 917 918 int 919 sabtty_mdmctrl(sc, bits, how) 920 struct sabtty_softc *sc; 921 int bits, how; 922 { 923 u_int8_t r; 924 int s; 925 926 s = spltty(); 927 switch (how) { 928 case DMGET: 929 bits = 0; 930 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 931 bits |= TIOCM_CTS; 932 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 933 bits |= TIOCM_CD; 934 935 r = SAB_READ(sc, SAB_PVR); 936 if ((r & sc->sc_pvr_dtr) == 0) 937 bits |= TIOCM_DTR; 938 if ((r & sc->sc_pvr_dsr) == 0) 939 bits |= TIOCM_DSR; 940 941 r = SAB_READ(sc, SAB_MODE); 942 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 943 bits |= TIOCM_RTS; 944 break; 945 case DMSET: 946 r = SAB_READ(sc, SAB_MODE); 947 if (bits & TIOCM_RTS) { 948 r &= ~SAB_MODE_FRTS; 949 r |= SAB_MODE_RTS; 950 } else 951 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 952 SAB_WRITE(sc, SAB_MODE, r); 953 954 r = SAB_READ(sc, SAB_PVR); 955 if (bits & TIOCM_DTR) 956 r &= ~sc->sc_pvr_dtr; 957 else 958 r |= sc->sc_pvr_dtr; 959 SAB_WRITE(sc, SAB_PVR, r); 960 break; 961 case DMBIS: 962 if (bits & TIOCM_RTS) { 963 r = SAB_READ(sc, SAB_MODE); 964 r &= ~SAB_MODE_FRTS; 965 r |= SAB_MODE_RTS; 966 SAB_WRITE(sc, SAB_MODE, r); 967 } 968 if (bits & TIOCM_DTR) { 969 r = SAB_READ(sc, SAB_PVR); 970 r &= ~sc->sc_pvr_dtr; 971 SAB_WRITE(sc, SAB_PVR, r); 972 } 973 break; 974 case DMBIC: 975 if (bits & TIOCM_RTS) { 976 r = SAB_READ(sc, SAB_MODE); 977 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 978 SAB_WRITE(sc, SAB_MODE, r); 979 } 980 if (bits & TIOCM_DTR) { 981 r = SAB_READ(sc, SAB_PVR); 982 r |= sc->sc_pvr_dtr; 983 SAB_WRITE(sc, SAB_PVR, r); 984 } 985 break; 986 } 987 splx(s); 988 return (bits); 989 } 990 991 int 992 sabttyparam(sc, tp, t) 993 struct sabtty_softc *sc; 994 struct tty *tp; 995 struct termios *t; 996 { 997 int s, ospeed; 998 tcflag_t cflag; 999 u_int8_t dafo, r; 1000 1001 ospeed = sabtty_speed(t->c_ospeed); 1002 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1003 return (EINVAL); 1004 1005 s = spltty(); 1006 1007 /* hang up line if ospeed is zero, otherwise raise dtr */ 1008 sabtty_mdmctrl(sc, TIOCM_DTR, 1009 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1010 1011 dafo = SAB_READ(sc, SAB_DAFO); 1012 1013 cflag = t->c_cflag; 1014 1015 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1016 cflag |= CLOCAL; 1017 cflag &= ~HUPCL; 1018 } 1019 1020 if (cflag & CSTOPB) 1021 dafo |= SAB_DAFO_STOP; 1022 else 1023 dafo &= ~SAB_DAFO_STOP; 1024 1025 dafo &= ~SAB_DAFO_CHL_CSIZE; 1026 switch (cflag & CSIZE) { 1027 case CS5: 1028 dafo |= SAB_DAFO_CHL_CS5; 1029 break; 1030 case CS6: 1031 dafo |= SAB_DAFO_CHL_CS6; 1032 break; 1033 case CS7: 1034 dafo |= SAB_DAFO_CHL_CS7; 1035 break; 1036 default: 1037 dafo |= SAB_DAFO_CHL_CS8; 1038 break; 1039 } 1040 1041 dafo &= ~SAB_DAFO_PARMASK; 1042 if (cflag & PARENB) { 1043 if (cflag & PARODD) 1044 dafo |= SAB_DAFO_PAR_ODD; 1045 else 1046 dafo |= SAB_DAFO_PAR_EVEN; 1047 } else 1048 dafo |= SAB_DAFO_PAR_NONE; 1049 1050 if (ospeed != 0) { 1051 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1052 r = SAB_READ(sc, SAB_CCR2); 1053 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1054 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1055 SAB_WRITE(sc, SAB_CCR2, r); 1056 } 1057 1058 r = SAB_READ(sc, SAB_MODE); 1059 r |= SAB_MODE_RAC; 1060 if (cflag & CRTSCTS) { 1061 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1062 r |= SAB_MODE_FRTS; 1063 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1064 } else { 1065 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1066 r &= ~SAB_MODE_FRTS; 1067 sc->sc_imr1 |= SAB_IMR1_CSC; 1068 } 1069 SAB_WRITE(sc, SAB_MODE, r); 1070 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1071 1072 tp->t_cflag = cflag; 1073 1074 splx(s); 1075 return (0); 1076 } 1077 1078 int 1079 sabtty_param(tp, t) 1080 struct tty *tp; 1081 struct termios *t; 1082 { 1083 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1084 1085 return (sabttyparam(sc, tp, t)); 1086 } 1087 1088 void 1089 sabtty_start(tp) 1090 struct tty *tp; 1091 { 1092 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1093 int s; 1094 1095 s = spltty(); 1096 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1097 if (tp->t_outq.c_cc <= tp->t_lowat) { 1098 if (tp->t_state & TS_ASLEEP) { 1099 tp->t_state &= ~TS_ASLEEP; 1100 wakeup(&tp->t_outq); 1101 } 1102 selwakeup(&tp->t_wsel); 1103 } 1104 if (tp->t_outq.c_cc) { 1105 sc->sc_txc = ndqb(&tp->t_outq, 0); 1106 sc->sc_txp = tp->t_outq.c_cf; 1107 tp->t_state |= TS_BUSY; 1108 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1109 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1110 } 1111 } 1112 splx(s); 1113 } 1114 1115 void 1116 sabtty_cec_wait(sc) 1117 struct sabtty_softc *sc; 1118 { 1119 int i = 50000; 1120 1121 for (;;) { 1122 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1123 return; 1124 if (--i == 0) 1125 break; 1126 DELAY(1); 1127 } 1128 } 1129 1130 void 1131 sabtty_tec_wait(sc) 1132 struct sabtty_softc *sc; 1133 { 1134 int i = 200000; 1135 1136 for (;;) { 1137 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1138 return; 1139 if (--i == 0) 1140 break; 1141 DELAY(1); 1142 } 1143 } 1144 1145 void 1146 sabtty_reset(sc) 1147 struct sabtty_softc *sc; 1148 { 1149 /* power down */ 1150 SAB_WRITE(sc, SAB_CCR0, 0); 1151 1152 /* set basic configuration */ 1153 SAB_WRITE(sc, SAB_CCR0, 1154 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1155 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1156 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1157 SAB_WRITE(sc, SAB_CCR3, 0); 1158 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1159 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1160 SAB_WRITE(sc, SAB_RFC, 1161 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1162 1163 /* clear interrupts */ 1164 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1165 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1166 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1167 SAB_READ(sc, SAB_ISR0); 1168 SAB_READ(sc, SAB_ISR1); 1169 } 1170 1171 void 1172 sabtty_flush(sc) 1173 struct sabtty_softc *sc; 1174 { 1175 /* clear rx fifo */ 1176 sabtty_cec_wait(sc); 1177 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1178 1179 /* clear tx fifo */ 1180 sabtty_cec_wait(sc); 1181 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1182 } 1183 1184 int 1185 sabtty_speed(rate) 1186 int rate; 1187 { 1188 int i, len, r; 1189 1190 if (rate == 0) 1191 return (0); 1192 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1193 for (i = 0; i < len; i++) { 1194 if (rate == sabtty_baudtable[i].baud) { 1195 r = sabtty_baudtable[i].n | 1196 (sabtty_baudtable[i].m << 6); 1197 return (r); 1198 } 1199 } 1200 return (-1); 1201 } 1202 1203 void 1204 sabtty_cnputc(sc, c) 1205 struct sabtty_softc *sc; 1206 int c; 1207 { 1208 sabtty_tec_wait(sc); 1209 SAB_WRITE(sc, SAB_TIC, c); 1210 sabtty_tec_wait(sc); 1211 } 1212 1213 int 1214 sabtty_cngetc(sc) 1215 struct sabtty_softc *sc; 1216 { 1217 u_int8_t r, len; 1218 1219 again: 1220 do { 1221 r = SAB_READ(sc, SAB_STAR); 1222 } while ((r & SAB_STAR_RFNE) == 0); 1223 1224 /* 1225 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1226 * (I hate this chip... hate hate hate). 1227 */ 1228 sabtty_cec_wait(sc); 1229 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1230 1231 /* Wait for RFIFO to come ready */ 1232 do { 1233 r = SAB_READ(sc, SAB_ISR0); 1234 } while ((r & SAB_ISR0_TCD) == 0); 1235 1236 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1237 if (len == 0) 1238 goto again; /* Shouldn't happen... */ 1239 1240 r = SAB_READ(sc, SAB_RFIFO); 1241 1242 /* 1243 * Blow away everything left in the FIFO... 1244 */ 1245 sabtty_cec_wait(sc); 1246 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1247 return (r); 1248 } 1249 1250 void 1251 sabtty_cnpollc(sc, on) 1252 struct sabtty_softc *sc; 1253 int on; 1254 { 1255 u_int8_t r; 1256 1257 if (on) { 1258 if (sc->sc_polling) 1259 return; 1260 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1261 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1262 r &= ~(SAB_RFC_RFDF); 1263 SAB_WRITE(sc, SAB_RFC, r); 1264 sabtty_cec_wait(sc); 1265 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1266 sc->sc_polling = 1; 1267 } else { 1268 if (!sc->sc_polling) 1269 return; 1270 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1271 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1272 sabtty_cec_wait(sc); 1273 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1274 sc->sc_polling = 0; 1275 } 1276 } 1277 1278 void 1279 sab_cnputc(dev, c) 1280 dev_t dev; 1281 int c; 1282 { 1283 struct sabtty_softc *sc = sabtty_cons_output; 1284 1285 if (sc == NULL) 1286 return; 1287 sabtty_cnputc(sc, c); 1288 } 1289 1290 void 1291 sab_cnpollc(dev, on) 1292 dev_t dev; 1293 int on; 1294 { 1295 struct sabtty_softc *sc = sabtty_cons_input; 1296 1297 sabtty_cnpollc(sc, on); 1298 } 1299 1300 int 1301 sab_cngetc(dev) 1302 dev_t dev; 1303 { 1304 struct sabtty_softc *sc = sabtty_cons_input; 1305 1306 if (sc == NULL) 1307 return (-1); 1308 return (sabtty_cngetc(sc)); 1309 } 1310 1311 void 1312 sabtty_console_flags(sc) 1313 struct sabtty_softc *sc; 1314 { 1315 int node, channel, cookie; 1316 char buf[255]; 1317 1318 node = sc->sc_parent->sc_node; 1319 channel = sc->sc_portno; 1320 1321 /* Default to channel 0 if there are no explicit prom args */ 1322 cookie = 0; 1323 1324 if (node == prom_instance_to_package(prom_stdin())) { 1325 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1326 strcmp("ttyb", buf) == 0) 1327 cookie = 1; 1328 1329 if (channel == cookie) 1330 sc->sc_flags |= SABTTYF_CONS_IN; 1331 } 1332 1333 /* Default to same channel if there are no explicit prom args */ 1334 1335 if (node == prom_instance_to_package(prom_stdout())) { 1336 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1337 strcmp("ttyb", buf) == 0) 1338 cookie = 1; 1339 1340 if (channel == cookie) 1341 sc->sc_flags |= SABTTYF_CONS_OUT; 1342 } 1343 } 1344 1345 void 1346 sabtty_shutdown(vsc) 1347 void *vsc; 1348 { 1349 struct sabtty_softc *sc = vsc; 1350 1351 /* Have to put the chip back into single char mode */ 1352 sc->sc_flags |= SABTTYF_DONTDDB; 1353 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1354 sabtty_cec_wait(sc); 1355 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1356 sabtty_cec_wait(sc); 1357 } 1358
Indexes created Fri Sep 26 08:10:20 GMT 2025