sab.c revision 1.23
1 /* $NetBSD: sab.c,v 1.23 2005/08/26 11:49:13 drochner 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 1.23 2005/08/26 11:49:13 drochner 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 #include "locators.h" 69 70 #define SABUNIT(x) (minor(x) & 0x7ffff) 71 #define SABDIALOUT(x) (minor(x) & 0x80000) 72 73 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 74 75 struct sab_softc { 76 struct device sc_dv; 77 struct intrhand * sc_ih; 78 bus_space_tag_t sc_bt; 79 bus_space_handle_t sc_bh; 80 struct sabtty_softc * sc_child[SAB_NCHAN]; 81 u_int sc_nchild; 82 void * sc_softintr; 83 int sc_node; 84 }; 85 86 struct sabtty_attach_args { 87 u_int sbt_portno; 88 }; 89 90 struct sabtty_softc { 91 struct device sc_dv; 92 struct sab_softc * sc_parent; 93 bus_space_tag_t sc_bt; 94 bus_space_handle_t sc_bh; 95 struct tty * sc_tty; 96 u_int sc_portno; 97 u_int8_t sc_pvr_dtr, sc_pvr_dsr; 98 u_int8_t sc_imr0, sc_imr1; 99 int sc_openflags; 100 u_char * sc_txp; 101 int sc_txc; 102 int sc_flags; 103 #define SABTTYF_STOP 0x01 104 #define SABTTYF_DONE 0x02 105 #define SABTTYF_RINGOVERFLOW 0x04 106 #define SABTTYF_CDCHG 0x08 107 #define SABTTYF_CONS_IN 0x10 108 #define SABTTYF_CONS_OUT 0x20 109 #define SABTTYF_TXDRAIN 0x40 110 #define SABTTYF_DONTDDB 0x80 111 u_int8_t sc_rbuf[SABTTY_RBUF_SIZE]; 112 u_int8_t *sc_rend, *sc_rput, *sc_rget; 113 u_int8_t sc_polling, sc_pollrfc; 114 }; 115 116 struct sabtty_softc *sabtty_cons_input; 117 struct sabtty_softc *sabtty_cons_output; 118 119 #define SAB_READ(sc,r) \ 120 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 121 #define SAB_WRITE(sc,r,v) \ 122 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 123 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 124 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 125 126 int sab_match(struct device *, struct cfdata *, void *); 127 void sab_attach(struct device *, struct device *, void *); 128 int sab_print(void *, const char *); 129 int sab_intr(void *); 130 131 void sab_softintr(void *); 132 void sab_cnputc(dev_t, int); 133 int sab_cngetc(dev_t); 134 void sab_cnpollc(dev_t, int); 135 136 int sabtty_match(struct device *, struct cfdata *, void *); 137 void sabtty_attach(struct device *, struct device *, void *); 138 void sabtty_start(struct tty *); 139 int sabtty_param(struct tty *, struct termios *); 140 int sabtty_intr(struct sabtty_softc *, int *); 141 void sabtty_softintr(struct sabtty_softc *); 142 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 143 void sabtty_cec_wait(struct sabtty_softc *); 144 void sabtty_tec_wait(struct sabtty_softc *); 145 void sabtty_reset(struct sabtty_softc *); 146 void sabtty_flush(struct sabtty_softc *); 147 int sabtty_speed(int); 148 void sabtty_console_flags(struct sabtty_softc *); 149 void sabtty_cnpollc(struct sabtty_softc *, int); 150 void sabtty_shutdown(void *); 151 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 152 153 void sabtty_cnputc(struct sabtty_softc *, int); 154 int sabtty_cngetc(struct sabtty_softc *); 155 156 CFATTACH_DECL(sab, sizeof(struct sab_softc), 157 sab_match, sab_attach, NULL, NULL); 158 159 extern struct cfdriver sab_cd; 160 161 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 162 sabtty_match, sabtty_attach, NULL, NULL); 163 164 extern struct cfdriver sabtty_cd; 165 166 dev_type_open(sabopen); 167 dev_type_close(sabclose); 168 dev_type_read(sabread); 169 dev_type_write(sabwrite); 170 dev_type_ioctl(sabioctl); 171 dev_type_stop(sabstop); 172 dev_type_tty(sabtty); 173 dev_type_poll(sabpoll); 174 175 static struct cnm_state sabtty_cnm_state; 176 177 const struct cdevsw sabtty_cdevsw = { 178 sabopen, sabclose, sabread, sabwrite, sabioctl, 179 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 180 }; 181 182 struct sabtty_rate { 183 int baud; 184 int n, m; 185 }; 186 187 struct sabtty_rate sabtty_baudtable[] = { 188 { 50, 35, 10 }, 189 { 75, 47, 9 }, 190 { 110, 32, 9 }, 191 { 134, 53, 8 }, 192 { 150, 47, 8 }, 193 { 200, 35, 8 }, 194 { 300, 47, 7 }, 195 { 600, 47, 6 }, 196 { 1200, 47, 5 }, 197 { 1800, 31, 5 }, 198 { 2400, 47, 4 }, 199 { 4800, 47, 3 }, 200 { 9600, 47, 2 }, 201 { 19200, 47, 1 }, 202 { 38400, 23, 1 }, 203 { 57600, 15, 1 }, 204 { 115200, 7, 1 }, 205 { 230400, 3, 1 }, 206 { 460800, 1, 1 }, 207 { 76800, 11, 1 }, 208 { 153600, 5, 1 }, 209 { 307200, 3, 1 }, 210 { 614400, 3, 0 }, 211 { 921600, 0, 1 }, 212 }; 213 214 int 215 sab_match(parent, match, aux) 216 struct device *parent; 217 struct cfdata *match; 218 void *aux; 219 { 220 struct ebus_attach_args *ea = aux; 221 char *compat; 222 223 if (strcmp(ea->ea_name, "se") == 0) 224 return (1); 225 226 compat = prom_getpropstring(ea->ea_node, "compatible"); 227 if (compat != NULL && !strcmp(compat, "sab82532")) 228 return (1); 229 230 return (0); 231 } 232 233 void 234 sab_attach(parent, self, aux) 235 struct device *parent; 236 struct device *self; 237 void *aux; 238 { 239 struct sab_softc *sc = (struct sab_softc *)self; 240 struct ebus_attach_args *ea = aux; 241 u_int8_t r; 242 u_int i; 243 int locs[SABCF_NLOCS]; 244 245 sc->sc_bt = ea->ea_bustag; 246 sc->sc_node = ea->ea_node; 247 248 /* Use prom mapping, if available. */ 249 if (ea->ea_nvaddr) 250 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], &sc->sc_bh); 251 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 252 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 253 printf(": can't map register space\n"); 254 return; 255 } 256 257 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 258 IPL_TTY, sab_intr, sc); 259 if (sc->sc_ih == NULL) { 260 printf(": can't map interrupt\n"); 261 return; 262 } 263 264 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 265 if (sc->sc_softintr == NULL) { 266 printf(": can't get soft intr\n"); 267 return; 268 } 269 270 aprint_normal(": rev "); 271 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 272 switch (r) { 273 case SAB_VSTR_V_1: 274 aprint_normal("1"); 275 break; 276 case SAB_VSTR_V_2: 277 aprint_normal("2"); 278 break; 279 case SAB_VSTR_V_32: 280 aprint_normal("3.2"); 281 break; 282 default: 283 aprint_normal("unknown(0x%x)", r); 284 break; 285 } 286 aprint_normal("\n"); 287 288 /* Let current output drain */ 289 DELAY(100000); 290 291 /* Set all pins, except DTR pins to be inputs */ 292 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 293 /* Disable port interrupts */ 294 SAB_WRITE(sc, SAB_PIM, 0xff); 295 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 296 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 297 298 for (i = 0; i < SAB_NCHAN; i++) { 299 struct sabtty_attach_args stax; 300 301 stax.sbt_portno = i; 302 303 locs[SABCF_CHANNEL] = i; 304 305 sc->sc_child[i] = 306 (struct sabtty_softc *)config_found_sm_loc(self, 307 "sab", locs, &stax, sab_print, config_stdsubmatch); 308 if (sc->sc_child[i] != NULL) 309 sc->sc_nchild++; 310 } 311 } 312 313 int 314 sab_print(args, name) 315 void *args; 316 const char *name; 317 { 318 struct sabtty_attach_args *sa = args; 319 320 if (name) 321 aprint_normal("sabtty at %s", name); 322 aprint_normal(" port %u", sa->sbt_portno); 323 return (UNCONF); 324 } 325 326 int 327 sab_intr(vsc) 328 void *vsc; 329 { 330 struct sab_softc *sc = vsc; 331 int r = 0, needsoft = 0; 332 u_int8_t gis; 333 334 gis = SAB_READ(sc, SAB_GIS); 335 336 /* channel A */ 337 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 338 sc->sc_child[0]->sc_tty) 339 r |= sabtty_intr(sc->sc_child[0], &needsoft); 340 341 /* channel B */ 342 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 343 sc->sc_child[1]->sc_tty) 344 r |= sabtty_intr(sc->sc_child[1], &needsoft); 345 346 if (needsoft) 347 softintr_schedule(sc->sc_softintr); 348 349 return (r); 350 } 351 352 void 353 sab_softintr(vsc) 354 void *vsc; 355 { 356 struct sab_softc *sc = vsc; 357 358 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 359 sabtty_softintr(sc->sc_child[0]); 360 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 361 sabtty_softintr(sc->sc_child[1]); 362 } 363 364 int 365 sabtty_match(parent, match, aux) 366 struct device *parent; 367 struct cfdata *match; 368 void *aux; 369 { 370 371 return (1); 372 } 373 374 void 375 sabtty_attach(parent, self, aux) 376 struct device *parent; 377 struct device *self; 378 void *aux; 379 { 380 struct sabtty_softc *sc = (struct sabtty_softc *)self; 381 struct sabtty_attach_args *sa = aux; 382 int r; 383 int maj; 384 385 sc->sc_tty = ttymalloc(); 386 if (sc->sc_tty == NULL) { 387 aprint_normal(": failed to allocate tty\n"); 388 return; 389 } 390 tty_attach(sc->sc_tty); 391 sc->sc_tty->t_oproc = sabtty_start; 392 sc->sc_tty->t_param = sabtty_param; 393 394 sc->sc_parent = (struct sab_softc *)parent; 395 sc->sc_bt = sc->sc_parent->sc_bt; 396 sc->sc_portno = sa->sbt_portno; 397 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 398 399 switch (sa->sbt_portno) { 400 case 0: /* port A */ 401 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 402 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 403 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 404 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 405 break; 406 case 1: /* port B */ 407 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 408 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 409 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 410 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 411 break; 412 default: 413 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 414 return; 415 } 416 if (r != 0) { 417 aprint_normal(": failed to allocate register subregion\n"); 418 return; 419 } 420 421 sabtty_console_flags(sc); 422 423 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 424 struct termios t; 425 const char *acc; 426 427 /* Let residual prom output drain */ 428 DELAY(100000); 429 430 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 431 case SABTTYF_CONS_IN: 432 acc = "input"; 433 break; 434 case SABTTYF_CONS_OUT: 435 acc = "output"; 436 break; 437 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 438 default: 439 acc = "i/o"; 440 break; 441 } 442 443 t.c_ispeed= 0; 444 t.c_ospeed = 9600; 445 t.c_cflag = CREAD | CS8 | HUPCL; 446 sc->sc_tty->t_ospeed = 0; 447 sabttyparam(sc, sc->sc_tty, &t); 448 449 if (sc->sc_flags & SABTTYF_CONS_IN) { 450 sabtty_cons_input = sc; 451 cn_tab->cn_pollc = sab_cnpollc; 452 cn_tab->cn_getc = sab_cngetc; 453 maj = cdevsw_lookup_major(&sabtty_cdevsw); 454 cn_tab->cn_dev = makedev(maj, self->dv_unit); 455 shutdownhook_establish(sabtty_shutdown, sc); 456 cn_init_magic(&sabtty_cnm_state); 457 cn_set_magic("\047\001"); /* default magic is BREAK */ 458 } 459 460 if (sc->sc_flags & SABTTYF_CONS_OUT) { 461 sabtty_tec_wait(sc); 462 sabtty_cons_output = sc; 463 cn_tab->cn_putc = sab_cnputc; 464 maj = cdevsw_lookup_major(&sabtty_cdevsw); 465 cn_tab->cn_dev = makedev(maj, self->dv_unit); 466 } 467 aprint_normal(": console %s", acc); 468 } else { 469 /* Not a console... */ 470 sabtty_reset(sc); 471 } 472 473 aprint_normal("\n"); 474 } 475 476 int 477 sabtty_intr(sc, needsoftp) 478 struct sabtty_softc *sc; 479 int *needsoftp; 480 { 481 u_int8_t isr0, isr1; 482 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 483 484 isr0 = SAB_READ(sc, SAB_ISR0); 485 isr1 = SAB_READ(sc, SAB_ISR1); 486 487 if (isr0 || isr1) 488 r = 1; 489 490 if (isr0 & SAB_ISR0_RPF) { 491 len = 32; 492 clearfifo = 1; 493 } 494 if (isr0 & SAB_ISR0_TCD) { 495 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 496 clearfifo = 1; 497 } 498 if (isr0 & SAB_ISR0_TIME) { 499 sabtty_cec_wait(sc); 500 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 501 } 502 if (isr0 & SAB_ISR0_RFO) { 503 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 504 clearfifo = 1; 505 } 506 if (len != 0) { 507 u_int8_t *ptr, b; 508 509 ptr = sc->sc_rput; 510 for (i = 0; i < len; i++) { 511 b = SAB_READ(sc, SAB_RFIFO); 512 if (i % 2 == 0) /* skip status byte */ 513 cn_check_magic(sc->sc_tty->t_dev, 514 b, sabtty_cnm_state); 515 *ptr++ = b; 516 if (ptr == sc->sc_rend) 517 ptr = sc->sc_rbuf; 518 if (ptr == sc->sc_rget) { 519 if (ptr == sc->sc_rbuf) 520 ptr = sc->sc_rend; 521 ptr--; 522 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 523 } 524 } 525 sc->sc_rput = ptr; 526 needsoft = 1; 527 } 528 529 if (clearfifo) { 530 sabtty_cec_wait(sc); 531 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 532 } 533 534 if (isr0 & SAB_ISR0_CDSC) { 535 sc->sc_flags |= SABTTYF_CDCHG; 536 needsoft = 1; 537 } 538 539 if (isr1 & SAB_ISR1_BRKT) 540 cn_check_magic(sc->sc_tty->t_dev, 541 CNC_BREAK, sabtty_cnm_state); 542 543 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 544 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 545 (sc->sc_flags & SABTTYF_STOP) == 0) { 546 if (sc->sc_txc < 32) 547 len = sc->sc_txc; 548 else 549 len = 32; 550 551 if (len > 0) { 552 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 553 sc->sc_txp += len; 554 sc->sc_txc -= len; 555 556 sabtty_cec_wait(sc); 557 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 558 559 /* 560 * Prevent the false end of xmit from 561 * confusing things below. 562 */ 563 isr1 &= ~SAB_ISR1_ALLS; 564 } 565 } 566 567 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 568 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 569 sc->sc_imr1 |= SAB_IMR1_XPR; 570 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 571 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 572 } 573 } 574 } 575 576 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 577 (sc->sc_flags & SABTTYF_STOP))) { 578 if (sc->sc_flags & SABTTYF_TXDRAIN) 579 wakeup(sc); 580 sc->sc_flags &= ~SABTTYF_STOP; 581 sc->sc_flags |= SABTTYF_DONE; 582 sc->sc_imr1 |= SAB_IMR1_ALLS; 583 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 584 needsoft = 1; 585 } 586 587 if (needsoft) 588 *needsoftp = needsoft; 589 return (r); 590 } 591 592 void 593 sabtty_softintr(sc) 594 struct sabtty_softc *sc; 595 { 596 struct tty *tp = sc->sc_tty; 597 int s, flags; 598 u_int8_t r; 599 600 if (tp == NULL) 601 return; 602 603 if ((tp->t_state & TS_ISOPEN) == 0) 604 return; 605 606 while (sc->sc_rget != sc->sc_rput) { 607 int data; 608 u_int8_t stat; 609 610 data = sc->sc_rget[0]; 611 stat = sc->sc_rget[1]; 612 sc->sc_rget += 2; 613 if (stat & SAB_RSTAT_PE) 614 data |= TTY_PE; 615 if (stat & SAB_RSTAT_FE) 616 data |= TTY_FE; 617 if (sc->sc_rget == sc->sc_rend) 618 sc->sc_rget = sc->sc_rbuf; 619 620 (*tp->t_linesw->l_rint)(data, tp); 621 } 622 623 s = splhigh(); 624 flags = sc->sc_flags; 625 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 626 splx(s); 627 628 if (flags & SABTTYF_CDCHG) { 629 s = spltty(); 630 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 631 splx(s); 632 633 (*tp->t_linesw->l_modem)(tp, r); 634 } 635 636 if (flags & SABTTYF_RINGOVERFLOW) 637 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 638 639 if (flags & SABTTYF_DONE) { 640 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 641 tp->t_state &= ~TS_BUSY; 642 (*tp->t_linesw->l_start)(tp); 643 } 644 } 645 646 int 647 sabopen(dev, flags, mode, p) 648 dev_t dev; 649 int flags, mode; 650 struct proc *p; 651 { 652 struct sabtty_softc *sc; 653 struct tty *tp; 654 int s, s1; 655 656 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 657 if (sc == NULL) 658 return (ENXIO); 659 660 tp = sc->sc_tty; 661 tp->t_dev = dev; 662 663 if ((tp->t_state & TS_ISOPEN) == 0) { 664 ttychars(tp); 665 tp->t_iflag = TTYDEF_IFLAG; 666 tp->t_oflag = TTYDEF_OFLAG; 667 tp->t_cflag = TTYDEF_CFLAG; 668 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 669 tp->t_cflag |= CLOCAL; 670 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 671 tp->t_cflag |= CRTSCTS; 672 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 673 tp->t_cflag |= MDMBUF; 674 tp->t_lflag = TTYDEF_LFLAG; 675 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 676 677 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 678 679 s = spltty(); 680 681 ttsetwater(tp); 682 683 s1 = splhigh(); 684 sabtty_reset(sc); 685 sabtty_param(tp, &tp->t_termios); 686 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 687 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 688 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 689 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 690 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 691 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 692 sabtty_cec_wait(sc); 693 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 694 sabtty_cec_wait(sc); 695 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 696 sabtty_cec_wait(sc); 697 splx(s1); 698 699 sabtty_flush(sc); 700 701 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 702 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 703 tp->t_state |= TS_CARR_ON; 704 else 705 tp->t_state &= ~TS_CARR_ON; 706 } else if ((tp->t_state & TS_XCLUDE) && 707 (!suser(p->p_ucred, &p->p_acflag))) { 708 return (EBUSY); 709 } else { 710 s = spltty(); 711 } 712 713 if ((flags & O_NONBLOCK) == 0) { 714 while ((tp->t_cflag & CLOCAL) == 0 && 715 (tp->t_state & TS_CARR_ON) == 0) { 716 int error; 717 718 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 719 "sabttycd", 0); 720 if (error != 0) { 721 splx(s); 722 return (error); 723 } 724 } 725 } 726 727 splx(s); 728 729 s = (*tp->t_linesw->l_open)(dev, tp); 730 if (s != 0) { 731 if (tp->t_state & TS_ISOPEN) 732 return (s); 733 734 if (tp->t_cflag & HUPCL) { 735 sabtty_mdmctrl(sc, 0, DMSET); 736 (void)tsleep(sc, TTIPRI, ttclos, hz); 737 } 738 739 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 740 /* Flush and power down if we're not the console */ 741 sabtty_flush(sc); 742 sabtty_reset(sc); 743 } 744 } 745 return (s); 746 } 747 748 int 749 sabclose(dev, flags, mode, p) 750 dev_t dev; 751 int flags, mode; 752 struct proc *p; 753 { 754 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 755 struct sab_softc *bc = sc->sc_parent; 756 struct tty *tp = sc->sc_tty; 757 int s; 758 759 (*tp->t_linesw->l_close)(tp, flags); 760 761 s = spltty(); 762 763 if ((tp->t_state & TS_ISOPEN) == 0) { 764 /* Wait for output drain */ 765 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 766 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 767 sc->sc_flags |= SABTTYF_TXDRAIN; 768 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 769 sc->sc_imr1 |= SAB_IMR1_ALLS; 770 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 771 sc->sc_flags &= ~SABTTYF_TXDRAIN; 772 773 if (tp->t_cflag & HUPCL) { 774 sabtty_mdmctrl(sc, 0, DMSET); 775 (void)tsleep(bc, TTIPRI, ttclos, hz); 776 } 777 778 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 779 /* Flush and power down if we're not the console */ 780 sabtty_flush(sc); 781 sabtty_reset(sc); 782 } 783 } 784 785 ttyclose(tp); 786 splx(s); 787 788 return (0); 789 } 790 791 int 792 sabread(dev, uio, flags) 793 dev_t dev; 794 struct uio *uio; 795 int flags; 796 { 797 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 798 struct tty *tp = sc->sc_tty; 799 800 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 801 } 802 803 int 804 sabwrite(dev, uio, flags) 805 dev_t dev; 806 struct uio *uio; 807 int flags; 808 { 809 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 810 struct tty *tp = sc->sc_tty; 811 812 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 813 } 814 815 int 816 sabioctl(dev, cmd, data, flags, p) 817 dev_t dev; 818 u_long cmd; 819 caddr_t data; 820 int flags; 821 struct proc *p; 822 { 823 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 824 struct tty *tp = sc->sc_tty; 825 int error; 826 827 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 828 if (error >= 0) 829 return (error); 830 831 error = ttioctl(tp, cmd, data, flags, p); 832 if (error >= 0) 833 return (error); 834 835 error = 0; 836 837 switch (cmd) { 838 case TIOCSBRK: 839 SAB_WRITE(sc, SAB_DAFO, 840 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 841 break; 842 case TIOCCBRK: 843 SAB_WRITE(sc, SAB_DAFO, 844 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 845 break; 846 case TIOCSDTR: 847 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 848 break; 849 case TIOCCDTR: 850 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 851 break; 852 case TIOCMBIS: 853 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 854 break; 855 case TIOCMBIC: 856 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 857 break; 858 case TIOCMGET: 859 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 860 break; 861 case TIOCMSET: 862 sabtty_mdmctrl(sc, *((int *)data), DMSET); 863 break; 864 case TIOCGFLAGS: 865 *((int *)data) = sc->sc_openflags; 866 break; 867 case TIOCSFLAGS: 868 if (suser(p->p_ucred, &p->p_acflag)) 869 error = EPERM; 870 else 871 sc->sc_openflags = *((int *)data) & 872 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 873 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 874 break; 875 default: 876 error = ENOTTY; 877 } 878 879 return (error); 880 } 881 882 struct tty * 883 sabtty(dev) 884 dev_t dev; 885 { 886 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 887 888 return (sc->sc_tty); 889 } 890 891 void 892 sabstop(tp, flag) 893 struct tty *tp; 894 int flag; 895 { 896 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 897 int s; 898 899 s = spltty(); 900 if (tp->t_state & TS_BUSY) { 901 if ((tp->t_state & TS_TTSTOP) == 0) 902 tp->t_state |= TS_FLUSH; 903 sc->sc_flags |= SABTTYF_STOP; 904 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 905 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 906 } 907 splx(s); 908 } 909 910 int 911 sabpoll(dev, events, p) 912 dev_t dev; 913 int events; 914 struct proc *p; 915 { 916 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 917 struct tty *tp = sc->sc_tty; 918 919 return ((*tp->t_linesw->l_poll)(tp, events, p)); 920 } 921 922 int 923 sabtty_mdmctrl(sc, bits, how) 924 struct sabtty_softc *sc; 925 int bits, how; 926 { 927 u_int8_t r; 928 int s; 929 930 s = spltty(); 931 switch (how) { 932 case DMGET: 933 bits = 0; 934 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 935 bits |= TIOCM_CTS; 936 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 937 bits |= TIOCM_CD; 938 939 r = SAB_READ(sc, SAB_PVR); 940 if ((r & sc->sc_pvr_dtr) == 0) 941 bits |= TIOCM_DTR; 942 if ((r & sc->sc_pvr_dsr) == 0) 943 bits |= TIOCM_DSR; 944 945 r = SAB_READ(sc, SAB_MODE); 946 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 947 bits |= TIOCM_RTS; 948 break; 949 case DMSET: 950 r = SAB_READ(sc, SAB_MODE); 951 if (bits & TIOCM_RTS) { 952 r &= ~SAB_MODE_FRTS; 953 r |= SAB_MODE_RTS; 954 } else 955 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 956 SAB_WRITE(sc, SAB_MODE, r); 957 958 r = SAB_READ(sc, SAB_PVR); 959 if (bits & TIOCM_DTR) 960 r &= ~sc->sc_pvr_dtr; 961 else 962 r |= sc->sc_pvr_dtr; 963 SAB_WRITE(sc, SAB_PVR, r); 964 break; 965 case DMBIS: 966 if (bits & TIOCM_RTS) { 967 r = SAB_READ(sc, SAB_MODE); 968 r &= ~SAB_MODE_FRTS; 969 r |= SAB_MODE_RTS; 970 SAB_WRITE(sc, SAB_MODE, r); 971 } 972 if (bits & TIOCM_DTR) { 973 r = SAB_READ(sc, SAB_PVR); 974 r &= ~sc->sc_pvr_dtr; 975 SAB_WRITE(sc, SAB_PVR, r); 976 } 977 break; 978 case DMBIC: 979 if (bits & TIOCM_RTS) { 980 r = SAB_READ(sc, SAB_MODE); 981 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 982 SAB_WRITE(sc, SAB_MODE, r); 983 } 984 if (bits & TIOCM_DTR) { 985 r = SAB_READ(sc, SAB_PVR); 986 r |= sc->sc_pvr_dtr; 987 SAB_WRITE(sc, SAB_PVR, r); 988 } 989 break; 990 } 991 splx(s); 992 return (bits); 993 } 994 995 int 996 sabttyparam(sc, tp, t) 997 struct sabtty_softc *sc; 998 struct tty *tp; 999 struct termios *t; 1000 { 1001 int s, ospeed; 1002 tcflag_t cflag; 1003 u_int8_t dafo, r; 1004 1005 ospeed = sabtty_speed(t->c_ospeed); 1006 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1007 return (EINVAL); 1008 1009 s = spltty(); 1010 1011 /* hang up line if ospeed is zero, otherwise raise dtr */ 1012 sabtty_mdmctrl(sc, TIOCM_DTR, 1013 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1014 1015 dafo = SAB_READ(sc, SAB_DAFO); 1016 1017 cflag = t->c_cflag; 1018 1019 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1020 cflag |= CLOCAL; 1021 cflag &= ~HUPCL; 1022 } 1023 1024 if (cflag & CSTOPB) 1025 dafo |= SAB_DAFO_STOP; 1026 else 1027 dafo &= ~SAB_DAFO_STOP; 1028 1029 dafo &= ~SAB_DAFO_CHL_CSIZE; 1030 switch (cflag & CSIZE) { 1031 case CS5: 1032 dafo |= SAB_DAFO_CHL_CS5; 1033 break; 1034 case CS6: 1035 dafo |= SAB_DAFO_CHL_CS6; 1036 break; 1037 case CS7: 1038 dafo |= SAB_DAFO_CHL_CS7; 1039 break; 1040 default: 1041 dafo |= SAB_DAFO_CHL_CS8; 1042 break; 1043 } 1044 1045 dafo &= ~SAB_DAFO_PARMASK; 1046 if (cflag & PARENB) { 1047 if (cflag & PARODD) 1048 dafo |= SAB_DAFO_PAR_ODD; 1049 else 1050 dafo |= SAB_DAFO_PAR_EVEN; 1051 } else 1052 dafo |= SAB_DAFO_PAR_NONE; 1053 1054 if (ospeed != 0) { 1055 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1056 r = SAB_READ(sc, SAB_CCR2); 1057 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1058 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1059 SAB_WRITE(sc, SAB_CCR2, r); 1060 } 1061 1062 r = SAB_READ(sc, SAB_MODE); 1063 r |= SAB_MODE_RAC; 1064 if (cflag & CRTSCTS) { 1065 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1066 r |= SAB_MODE_FRTS; 1067 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1068 } else { 1069 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1070 r &= ~SAB_MODE_FRTS; 1071 sc->sc_imr1 |= SAB_IMR1_CSC; 1072 } 1073 SAB_WRITE(sc, SAB_MODE, r); 1074 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1075 1076 tp->t_cflag = cflag; 1077 1078 splx(s); 1079 return (0); 1080 } 1081 1082 int 1083 sabtty_param(tp, t) 1084 struct tty *tp; 1085 struct termios *t; 1086 { 1087 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1088 1089 return (sabttyparam(sc, tp, t)); 1090 } 1091 1092 void 1093 sabtty_start(tp) 1094 struct tty *tp; 1095 { 1096 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1097 int s; 1098 1099 s = spltty(); 1100 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1101 if (tp->t_outq.c_cc <= tp->t_lowat) { 1102 if (tp->t_state & TS_ASLEEP) { 1103 tp->t_state &= ~TS_ASLEEP; 1104 wakeup(&tp->t_outq); 1105 } 1106 selwakeup(&tp->t_wsel); 1107 } 1108 if (tp->t_outq.c_cc) { 1109 sc->sc_txc = ndqb(&tp->t_outq, 0); 1110 sc->sc_txp = tp->t_outq.c_cf; 1111 tp->t_state |= TS_BUSY; 1112 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1113 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1114 } 1115 } 1116 splx(s); 1117 } 1118 1119 void 1120 sabtty_cec_wait(sc) 1121 struct sabtty_softc *sc; 1122 { 1123 int i = 50000; 1124 1125 for (;;) { 1126 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1127 return; 1128 if (--i == 0) 1129 break; 1130 DELAY(1); 1131 } 1132 } 1133 1134 void 1135 sabtty_tec_wait(sc) 1136 struct sabtty_softc *sc; 1137 { 1138 int i = 200000; 1139 1140 for (;;) { 1141 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1142 return; 1143 if (--i == 0) 1144 break; 1145 DELAY(1); 1146 } 1147 } 1148 1149 void 1150 sabtty_reset(sc) 1151 struct sabtty_softc *sc; 1152 { 1153 /* power down */ 1154 SAB_WRITE(sc, SAB_CCR0, 0); 1155 1156 /* set basic configuration */ 1157 SAB_WRITE(sc, SAB_CCR0, 1158 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1159 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1160 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1161 SAB_WRITE(sc, SAB_CCR3, 0); 1162 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1163 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1164 SAB_WRITE(sc, SAB_RFC, 1165 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1166 1167 /* clear interrupts */ 1168 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1169 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1170 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1171 SAB_READ(sc, SAB_ISR0); 1172 SAB_READ(sc, SAB_ISR1); 1173 } 1174 1175 void 1176 sabtty_flush(sc) 1177 struct sabtty_softc *sc; 1178 { 1179 /* clear rx fifo */ 1180 sabtty_cec_wait(sc); 1181 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1182 1183 /* clear tx fifo */ 1184 sabtty_cec_wait(sc); 1185 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1186 } 1187 1188 int 1189 sabtty_speed(rate) 1190 int rate; 1191 { 1192 int i, len, r; 1193 1194 if (rate == 0) 1195 return (0); 1196 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1197 for (i = 0; i < len; i++) { 1198 if (rate == sabtty_baudtable[i].baud) { 1199 r = sabtty_baudtable[i].n | 1200 (sabtty_baudtable[i].m << 6); 1201 return (r); 1202 } 1203 } 1204 return (-1); 1205 } 1206 1207 void 1208 sabtty_cnputc(sc, c) 1209 struct sabtty_softc *sc; 1210 int c; 1211 { 1212 sabtty_tec_wait(sc); 1213 SAB_WRITE(sc, SAB_TIC, c); 1214 sabtty_tec_wait(sc); 1215 } 1216 1217 int 1218 sabtty_cngetc(sc) 1219 struct sabtty_softc *sc; 1220 { 1221 u_int8_t r, len; 1222 1223 again: 1224 do { 1225 r = SAB_READ(sc, SAB_STAR); 1226 } while ((r & SAB_STAR_RFNE) == 0); 1227 1228 /* 1229 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1230 * (I hate this chip... hate hate hate). 1231 */ 1232 sabtty_cec_wait(sc); 1233 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1234 1235 /* Wait for RFIFO to come ready */ 1236 do { 1237 r = SAB_READ(sc, SAB_ISR0); 1238 } while ((r & SAB_ISR0_TCD) == 0); 1239 1240 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1241 if (len == 0) 1242 goto again; /* Shouldn't happen... */ 1243 1244 r = SAB_READ(sc, SAB_RFIFO); 1245 1246 /* 1247 * Blow away everything left in the FIFO... 1248 */ 1249 sabtty_cec_wait(sc); 1250 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1251 return (r); 1252 } 1253 1254 void 1255 sabtty_cnpollc(sc, on) 1256 struct sabtty_softc *sc; 1257 int on; 1258 { 1259 u_int8_t r; 1260 1261 if (on) { 1262 if (sc->sc_polling) 1263 return; 1264 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1265 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1266 r &= ~(SAB_RFC_RFDF); 1267 SAB_WRITE(sc, SAB_RFC, r); 1268 sabtty_cec_wait(sc); 1269 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1270 sc->sc_polling = 1; 1271 } else { 1272 if (!sc->sc_polling) 1273 return; 1274 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1275 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1276 sabtty_cec_wait(sc); 1277 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1278 sc->sc_polling = 0; 1279 } 1280 } 1281 1282 void 1283 sab_cnputc(dev, c) 1284 dev_t dev; 1285 int c; 1286 { 1287 struct sabtty_softc *sc = sabtty_cons_output; 1288 1289 if (sc == NULL) 1290 return; 1291 sabtty_cnputc(sc, c); 1292 } 1293 1294 void 1295 sab_cnpollc(dev, on) 1296 dev_t dev; 1297 int on; 1298 { 1299 struct sabtty_softc *sc = sabtty_cons_input; 1300 1301 sabtty_cnpollc(sc, on); 1302 } 1303 1304 int 1305 sab_cngetc(dev) 1306 dev_t dev; 1307 { 1308 struct sabtty_softc *sc = sabtty_cons_input; 1309 1310 if (sc == NULL) 1311 return (-1); 1312 return (sabtty_cngetc(sc)); 1313 } 1314 1315 void 1316 sabtty_console_flags(sc) 1317 struct sabtty_softc *sc; 1318 { 1319 int node, channel, cookie; 1320 char buf[255]; 1321 1322 node = sc->sc_parent->sc_node; 1323 channel = sc->sc_portno; 1324 1325 /* Default to channel 0 if there are no explicit prom args */ 1326 cookie = 0; 1327 1328 if (node == prom_instance_to_package(prom_stdin())) { 1329 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1330 strcmp("ttyb", buf) == 0) 1331 cookie = 1; 1332 1333 if (channel == cookie) 1334 sc->sc_flags |= SABTTYF_CONS_IN; 1335 } 1336 1337 /* Default to same channel if there are no explicit prom args */ 1338 1339 if (node == prom_instance_to_package(prom_stdout())) { 1340 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1341 strcmp("ttyb", buf) == 0) 1342 cookie = 1; 1343 1344 if (channel == cookie) 1345 sc->sc_flags |= SABTTYF_CONS_OUT; 1346 } 1347 } 1348 1349 void 1350 sabtty_shutdown(vsc) 1351 void *vsc; 1352 { 1353 struct sabtty_softc *sc = vsc; 1354 1355 /* Have to put the chip back into single char mode */ 1356 sc->sc_flags |= SABTTYF_DONTDDB; 1357 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1358 sabtty_cec_wait(sc); 1359 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1360 sabtty_cec_wait(sc); 1361 } 1362
Indexes created Thu Sep 25 16:09:42 GMT 2025