sab.c revision 1.21
1 /* $NetBSD: sab.c,v 1.21 2005/05/31 00:50:28 christos 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 1.21 2005/05/31 00:50:28 christos 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_submatch(struct device *, struct cfdata *, 129 const locdesc_t *, void *); 130 int sab_print(void *, const char *); 131 int sab_intr(void *); 132 133 void sab_softintr(void *); 134 void sab_cnputc(dev_t, int); 135 int sab_cngetc(dev_t); 136 void sab_cnpollc(dev_t, int); 137 138 int sabtty_match(struct device *, struct cfdata *, void *); 139 void sabtty_attach(struct device *, struct device *, void *); 140 void sabtty_start(struct tty *); 141 int sabtty_param(struct tty *, struct termios *); 142 int sabtty_intr(struct sabtty_softc *, int *); 143 void sabtty_softintr(struct sabtty_softc *); 144 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 145 void sabtty_cec_wait(struct sabtty_softc *); 146 void sabtty_tec_wait(struct sabtty_softc *); 147 void sabtty_reset(struct sabtty_softc *); 148 void sabtty_flush(struct sabtty_softc *); 149 int sabtty_speed(int); 150 void sabtty_console_flags(struct sabtty_softc *); 151 void sabtty_cnpollc(struct sabtty_softc *, int); 152 void sabtty_shutdown(void *); 153 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 154 155 void sabtty_cnputc(struct sabtty_softc *, int); 156 int sabtty_cngetc(struct sabtty_softc *); 157 158 CFATTACH_DECL(sab, sizeof(struct sab_softc), 159 sab_match, sab_attach, NULL, NULL); 160 161 extern struct cfdriver sab_cd; 162 163 CFATTACH_DECL(sabtty, sizeof(struct sabtty_softc), 164 sabtty_match, sabtty_attach, NULL, NULL); 165 166 extern struct cfdriver sabtty_cd; 167 168 dev_type_open(sabopen); 169 dev_type_close(sabclose); 170 dev_type_read(sabread); 171 dev_type_write(sabwrite); 172 dev_type_ioctl(sabioctl); 173 dev_type_stop(sabstop); 174 dev_type_tty(sabtty); 175 dev_type_poll(sabpoll); 176 177 static struct cnm_state sabtty_cnm_state; 178 179 const struct cdevsw sabtty_cdevsw = { 180 sabopen, sabclose, sabread, sabwrite, sabioctl, 181 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 182 }; 183 184 struct sabtty_rate { 185 int baud; 186 int n, m; 187 }; 188 189 struct sabtty_rate sabtty_baudtable[] = { 190 { 50, 35, 10 }, 191 { 75, 47, 9 }, 192 { 110, 32, 9 }, 193 { 134, 53, 8 }, 194 { 150, 47, 8 }, 195 { 200, 35, 8 }, 196 { 300, 47, 7 }, 197 { 600, 47, 6 }, 198 { 1200, 47, 5 }, 199 { 1800, 31, 5 }, 200 { 2400, 47, 4 }, 201 { 4800, 47, 3 }, 202 { 9600, 47, 2 }, 203 { 19200, 47, 1 }, 204 { 38400, 23, 1 }, 205 { 57600, 15, 1 }, 206 { 115200, 7, 1 }, 207 { 230400, 3, 1 }, 208 { 460800, 1, 1 }, 209 { 76800, 11, 1 }, 210 { 153600, 5, 1 }, 211 { 307200, 3, 1 }, 212 { 614400, 3, 0 }, 213 { 921600, 0, 1 }, 214 }; 215 216 int 217 sab_match(parent, match, aux) 218 struct device *parent; 219 struct cfdata *match; 220 void *aux; 221 { 222 struct ebus_attach_args *ea = aux; 223 char *compat; 224 225 if (strcmp(ea->ea_name, "se") == 0) 226 return (1); 227 228 compat = prom_getpropstring(ea->ea_node, "compatible"); 229 if (compat != NULL && !strcmp(compat, "sab82532")) 230 return (1); 231 232 return (0); 233 } 234 235 void 236 sab_attach(parent, self, aux) 237 struct device *parent; 238 struct device *self; 239 void *aux; 240 { 241 struct sab_softc *sc = (struct sab_softc *)self; 242 struct ebus_attach_args *ea = aux; 243 u_int8_t r; 244 u_int i; 245 int help[2]; 246 locdesc_t *ldesc = (void *)help; /* XXX */ 247 248 sc->sc_bt = ea->ea_bustag; 249 sc->sc_node = ea->ea_node; 250 251 /* Use prom mapping, if available. */ 252 if (ea->ea_nvaddr) 253 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], &sc->sc_bh); 254 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 255 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 256 printf(": can't map register space\n"); 257 return; 258 } 259 260 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 261 IPL_TTY, sab_intr, sc); 262 if (sc->sc_ih == NULL) { 263 printf(": can't map interrupt\n"); 264 return; 265 } 266 267 sc->sc_softintr = softintr_establish(IPL_TTY, sab_softintr, sc); 268 if (sc->sc_softintr == NULL) { 269 printf(": can't get soft intr\n"); 270 return; 271 } 272 273 aprint_normal(": rev "); 274 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 275 switch (r) { 276 case SAB_VSTR_V_1: 277 aprint_normal("1"); 278 break; 279 case SAB_VSTR_V_2: 280 aprint_normal("2"); 281 break; 282 case SAB_VSTR_V_32: 283 aprint_normal("3.2"); 284 break; 285 default: 286 aprint_normal("unknown(0x%x)", r); 287 break; 288 } 289 aprint_normal("\n"); 290 291 /* Let current output drain */ 292 DELAY(100000); 293 294 /* Set all pins, except DTR pins to be inputs */ 295 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 296 /* Disable port interrupts */ 297 SAB_WRITE(sc, SAB_PIM, 0xff); 298 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 299 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 300 301 for (i = 0; i < SAB_NCHAN; i++) { 302 struct sabtty_attach_args stax; 303 304 stax.sbt_portno = i; 305 306 ldesc->len = 1; 307 ldesc->locs[SABCF_CHANNEL] = i; 308 309 sc->sc_child[i] = 310 (struct sabtty_softc *)config_found_sm_loc(self, 311 "sab", ldesc, &stax, sab_print, sab_submatch); 312 if (sc->sc_child[i] != NULL) 313 sc->sc_nchild++; 314 } 315 } 316 317 int 318 sab_submatch(struct device *parent, struct cfdata *cf, 319 const locdesc_t *ldesc, void *aux) 320 { 321 322 if (cf->cf_loc[SABCF_CHANNEL] != SABCF_CHANNEL_DEFAULT && 323 cf->cf_loc[SABCF_CHANNEL] != ldesc->locs[SABCF_CHANNEL]) 324 return (0); 325 326 return (config_match(parent, cf, aux)); 327 } 328 329 int 330 sab_print(args, name) 331 void *args; 332 const char *name; 333 { 334 struct sabtty_attach_args *sa = args; 335 336 if (name) 337 aprint_normal("sabtty at %s", name); 338 aprint_normal(" port %u", sa->sbt_portno); 339 return (UNCONF); 340 } 341 342 int 343 sab_intr(vsc) 344 void *vsc; 345 { 346 struct sab_softc *sc = vsc; 347 int r = 0, needsoft = 0; 348 u_int8_t gis; 349 350 gis = SAB_READ(sc, SAB_GIS); 351 352 /* channel A */ 353 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 354 sc->sc_child[0]->sc_tty) 355 r |= sabtty_intr(sc->sc_child[0], &needsoft); 356 357 /* channel B */ 358 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 359 sc->sc_child[1]->sc_tty) 360 r |= sabtty_intr(sc->sc_child[1], &needsoft); 361 362 if (needsoft) 363 softintr_schedule(sc->sc_softintr); 364 365 return (r); 366 } 367 368 void 369 sab_softintr(vsc) 370 void *vsc; 371 { 372 struct sab_softc *sc = vsc; 373 374 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 375 sabtty_softintr(sc->sc_child[0]); 376 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 377 sabtty_softintr(sc->sc_child[1]); 378 } 379 380 int 381 sabtty_match(parent, match, aux) 382 struct device *parent; 383 struct cfdata *match; 384 void *aux; 385 { 386 387 return (1); 388 } 389 390 void 391 sabtty_attach(parent, self, aux) 392 struct device *parent; 393 struct device *self; 394 void *aux; 395 { 396 struct sabtty_softc *sc = (struct sabtty_softc *)self; 397 struct sabtty_attach_args *sa = aux; 398 int r; 399 int maj; 400 401 sc->sc_tty = ttymalloc(); 402 if (sc->sc_tty == NULL) { 403 aprint_normal(": failed to allocate tty\n"); 404 return; 405 } 406 tty_attach(sc->sc_tty); 407 sc->sc_tty->t_oproc = sabtty_start; 408 sc->sc_tty->t_param = sabtty_param; 409 410 sc->sc_parent = (struct sab_softc *)parent; 411 sc->sc_bt = sc->sc_parent->sc_bt; 412 sc->sc_portno = sa->sbt_portno; 413 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 414 415 switch (sa->sbt_portno) { 416 case 0: /* port A */ 417 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 418 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 419 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 420 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 421 break; 422 case 1: /* port B */ 423 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 424 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 425 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 426 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 427 break; 428 default: 429 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 430 return; 431 } 432 if (r != 0) { 433 aprint_normal(": failed to allocate register subregion\n"); 434 return; 435 } 436 437 sabtty_console_flags(sc); 438 439 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 440 struct termios t; 441 const char *acc; 442 443 /* Let residual prom output drain */ 444 DELAY(100000); 445 446 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 447 case SABTTYF_CONS_IN: 448 acc = "input"; 449 break; 450 case SABTTYF_CONS_OUT: 451 acc = "output"; 452 break; 453 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 454 default: 455 acc = "i/o"; 456 break; 457 } 458 459 t.c_ispeed= 0; 460 t.c_ospeed = 9600; 461 t.c_cflag = CREAD | CS8 | HUPCL; 462 sc->sc_tty->t_ospeed = 0; 463 sabttyparam(sc, sc->sc_tty, &t); 464 465 if (sc->sc_flags & SABTTYF_CONS_IN) { 466 sabtty_cons_input = sc; 467 cn_tab->cn_pollc = sab_cnpollc; 468 cn_tab->cn_getc = sab_cngetc; 469 maj = cdevsw_lookup_major(&sabtty_cdevsw); 470 cn_tab->cn_dev = makedev(maj, self->dv_unit); 471 shutdownhook_establish(sabtty_shutdown, sc); 472 cn_init_magic(&sabtty_cnm_state); 473 cn_set_magic("\047\001"); /* default magic is BREAK */ 474 } 475 476 if (sc->sc_flags & SABTTYF_CONS_OUT) { 477 sabtty_tec_wait(sc); 478 sabtty_cons_output = sc; 479 cn_tab->cn_putc = sab_cnputc; 480 maj = cdevsw_lookup_major(&sabtty_cdevsw); 481 cn_tab->cn_dev = makedev(maj, self->dv_unit); 482 } 483 aprint_normal(": console %s", acc); 484 } else { 485 /* Not a console... */ 486 sabtty_reset(sc); 487 } 488 489 aprint_normal("\n"); 490 } 491 492 int 493 sabtty_intr(sc, needsoftp) 494 struct sabtty_softc *sc; 495 int *needsoftp; 496 { 497 u_int8_t isr0, isr1; 498 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 499 500 isr0 = SAB_READ(sc, SAB_ISR0); 501 isr1 = SAB_READ(sc, SAB_ISR1); 502 503 if (isr0 || isr1) 504 r = 1; 505 506 if (isr0 & SAB_ISR0_RPF) { 507 len = 32; 508 clearfifo = 1; 509 } 510 if (isr0 & SAB_ISR0_TCD) { 511 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 512 clearfifo = 1; 513 } 514 if (isr0 & SAB_ISR0_TIME) { 515 sabtty_cec_wait(sc); 516 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 517 } 518 if (isr0 & SAB_ISR0_RFO) { 519 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 520 clearfifo = 1; 521 } 522 if (len != 0) { 523 u_int8_t *ptr, b; 524 525 ptr = sc->sc_rput; 526 for (i = 0; i < len; i++) { 527 b = SAB_READ(sc, SAB_RFIFO); 528 if (i % 2 == 0) /* skip status byte */ 529 cn_check_magic(sc->sc_tty->t_dev, 530 b, sabtty_cnm_state); 531 *ptr++ = b; 532 if (ptr == sc->sc_rend) 533 ptr = sc->sc_rbuf; 534 if (ptr == sc->sc_rget) { 535 if (ptr == sc->sc_rbuf) 536 ptr = sc->sc_rend; 537 ptr--; 538 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 539 } 540 } 541 sc->sc_rput = ptr; 542 needsoft = 1; 543 } 544 545 if (clearfifo) { 546 sabtty_cec_wait(sc); 547 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 548 } 549 550 if (isr0 & SAB_ISR0_CDSC) { 551 sc->sc_flags |= SABTTYF_CDCHG; 552 needsoft = 1; 553 } 554 555 if (isr1 & SAB_ISR1_BRKT) 556 cn_check_magic(sc->sc_tty->t_dev, 557 CNC_BREAK, sabtty_cnm_state); 558 559 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 560 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 561 (sc->sc_flags & SABTTYF_STOP) == 0) { 562 if (sc->sc_txc < 32) 563 len = sc->sc_txc; 564 else 565 len = 32; 566 567 if (len > 0) { 568 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 569 sc->sc_txp += len; 570 sc->sc_txc -= len; 571 572 sabtty_cec_wait(sc); 573 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 574 575 /* 576 * Prevent the false end of xmit from 577 * confusing things below. 578 */ 579 isr1 &= ~SAB_ISR1_ALLS; 580 } 581 } 582 583 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 584 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 585 sc->sc_imr1 |= SAB_IMR1_XPR; 586 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 587 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 588 } 589 } 590 } 591 592 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 593 (sc->sc_flags & SABTTYF_STOP))) { 594 if (sc->sc_flags & SABTTYF_TXDRAIN) 595 wakeup(sc); 596 sc->sc_flags &= ~SABTTYF_STOP; 597 sc->sc_flags |= SABTTYF_DONE; 598 sc->sc_imr1 |= SAB_IMR1_ALLS; 599 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 600 needsoft = 1; 601 } 602 603 if (needsoft) 604 *needsoftp = needsoft; 605 return (r); 606 } 607 608 void 609 sabtty_softintr(sc) 610 struct sabtty_softc *sc; 611 { 612 struct tty *tp = sc->sc_tty; 613 int s, flags; 614 u_int8_t r; 615 616 if (tp == NULL) 617 return; 618 619 if ((tp->t_state & TS_ISOPEN) == 0) 620 return; 621 622 while (sc->sc_rget != sc->sc_rput) { 623 int data; 624 u_int8_t stat; 625 626 data = sc->sc_rget[0]; 627 stat = sc->sc_rget[1]; 628 sc->sc_rget += 2; 629 if (stat & SAB_RSTAT_PE) 630 data |= TTY_PE; 631 if (stat & SAB_RSTAT_FE) 632 data |= TTY_FE; 633 if (sc->sc_rget == sc->sc_rend) 634 sc->sc_rget = sc->sc_rbuf; 635 636 (*tp->t_linesw->l_rint)(data, tp); 637 } 638 639 s = splhigh(); 640 flags = sc->sc_flags; 641 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 642 splx(s); 643 644 if (flags & SABTTYF_CDCHG) { 645 s = spltty(); 646 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 647 splx(s); 648 649 (*tp->t_linesw->l_modem)(tp, r); 650 } 651 652 if (flags & SABTTYF_RINGOVERFLOW) 653 log(LOG_WARNING, "%s: ring overflow\n", sc->sc_dv.dv_xname); 654 655 if (flags & SABTTYF_DONE) { 656 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 657 tp->t_state &= ~TS_BUSY; 658 (*tp->t_linesw->l_start)(tp); 659 } 660 } 661 662 int 663 sabopen(dev, flags, mode, p) 664 dev_t dev; 665 int flags, mode; 666 struct proc *p; 667 { 668 struct sabtty_softc *sc; 669 struct tty *tp; 670 int s, s1; 671 672 sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 673 if (sc == NULL) 674 return (ENXIO); 675 676 tp = sc->sc_tty; 677 tp->t_dev = dev; 678 679 if ((tp->t_state & TS_ISOPEN) == 0) { 680 ttychars(tp); 681 tp->t_iflag = TTYDEF_IFLAG; 682 tp->t_oflag = TTYDEF_OFLAG; 683 tp->t_cflag = TTYDEF_CFLAG; 684 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 685 tp->t_cflag |= CLOCAL; 686 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 687 tp->t_cflag |= CRTSCTS; 688 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 689 tp->t_cflag |= MDMBUF; 690 tp->t_lflag = TTYDEF_LFLAG; 691 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 692 693 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 694 695 s = spltty(); 696 697 ttsetwater(tp); 698 699 s1 = splhigh(); 700 sabtty_reset(sc); 701 sabtty_param(tp, &tp->t_termios); 702 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 703 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 704 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 705 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 706 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 707 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 708 sabtty_cec_wait(sc); 709 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 710 sabtty_cec_wait(sc); 711 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 712 sabtty_cec_wait(sc); 713 splx(s1); 714 715 sabtty_flush(sc); 716 717 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 718 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 719 tp->t_state |= TS_CARR_ON; 720 else 721 tp->t_state &= ~TS_CARR_ON; 722 } else if ((tp->t_state & TS_XCLUDE) && 723 (!suser(p->p_ucred, &p->p_acflag))) { 724 return (EBUSY); 725 } else { 726 s = spltty(); 727 } 728 729 if ((flags & O_NONBLOCK) == 0) { 730 while ((tp->t_cflag & CLOCAL) == 0 && 731 (tp->t_state & TS_CARR_ON) == 0) { 732 int error; 733 734 error = ttysleep(tp, &tp->t_rawq, TTIPRI | PCATCH, 735 "sabttycd", 0); 736 if (error != 0) { 737 splx(s); 738 return (error); 739 } 740 } 741 } 742 743 splx(s); 744 745 s = (*tp->t_linesw->l_open)(dev, tp); 746 if (s != 0) { 747 if (tp->t_state & TS_ISOPEN) 748 return (s); 749 750 if (tp->t_cflag & HUPCL) { 751 sabtty_mdmctrl(sc, 0, DMSET); 752 (void)tsleep(sc, TTIPRI, ttclos, hz); 753 } 754 755 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 756 /* Flush and power down if we're not the console */ 757 sabtty_flush(sc); 758 sabtty_reset(sc); 759 } 760 } 761 return (s); 762 } 763 764 int 765 sabclose(dev, flags, mode, p) 766 dev_t dev; 767 int flags, mode; 768 struct proc *p; 769 { 770 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 771 struct sab_softc *bc = sc->sc_parent; 772 struct tty *tp = sc->sc_tty; 773 int s; 774 775 (*tp->t_linesw->l_close)(tp, flags); 776 777 s = spltty(); 778 779 if ((tp->t_state & TS_ISOPEN) == 0) { 780 /* Wait for output drain */ 781 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 782 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 783 sc->sc_flags |= SABTTYF_TXDRAIN; 784 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 785 sc->sc_imr1 |= SAB_IMR1_ALLS; 786 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 787 sc->sc_flags &= ~SABTTYF_TXDRAIN; 788 789 if (tp->t_cflag & HUPCL) { 790 sabtty_mdmctrl(sc, 0, DMSET); 791 (void)tsleep(bc, TTIPRI, ttclos, hz); 792 } 793 794 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 795 /* Flush and power down if we're not the console */ 796 sabtty_flush(sc); 797 sabtty_reset(sc); 798 } 799 } 800 801 ttyclose(tp); 802 splx(s); 803 804 return (0); 805 } 806 807 int 808 sabread(dev, uio, flags) 809 dev_t dev; 810 struct uio *uio; 811 int flags; 812 { 813 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 814 struct tty *tp = sc->sc_tty; 815 816 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 817 } 818 819 int 820 sabwrite(dev, uio, flags) 821 dev_t dev; 822 struct uio *uio; 823 int flags; 824 { 825 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 826 struct tty *tp = sc->sc_tty; 827 828 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 829 } 830 831 int 832 sabioctl(dev, cmd, data, flags, p) 833 dev_t dev; 834 u_long cmd; 835 caddr_t data; 836 int flags; 837 struct proc *p; 838 { 839 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 840 struct tty *tp = sc->sc_tty; 841 int error; 842 843 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, p); 844 if (error >= 0) 845 return (error); 846 847 error = ttioctl(tp, cmd, data, flags, p); 848 if (error >= 0) 849 return (error); 850 851 error = 0; 852 853 switch (cmd) { 854 case TIOCSBRK: 855 SAB_WRITE(sc, SAB_DAFO, 856 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 857 break; 858 case TIOCCBRK: 859 SAB_WRITE(sc, SAB_DAFO, 860 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 861 break; 862 case TIOCSDTR: 863 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 864 break; 865 case TIOCCDTR: 866 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 867 break; 868 case TIOCMBIS: 869 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 870 break; 871 case TIOCMBIC: 872 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 873 break; 874 case TIOCMGET: 875 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 876 break; 877 case TIOCMSET: 878 sabtty_mdmctrl(sc, *((int *)data), DMSET); 879 break; 880 case TIOCGFLAGS: 881 *((int *)data) = sc->sc_openflags; 882 break; 883 case TIOCSFLAGS: 884 if (suser(p->p_ucred, &p->p_acflag)) 885 error = EPERM; 886 else 887 sc->sc_openflags = *((int *)data) & 888 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 889 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 890 break; 891 default: 892 error = ENOTTY; 893 } 894 895 return (error); 896 } 897 898 struct tty * 899 sabtty(dev) 900 dev_t dev; 901 { 902 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 903 904 return (sc->sc_tty); 905 } 906 907 void 908 sabstop(tp, flag) 909 struct tty *tp; 910 int flag; 911 { 912 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 913 int s; 914 915 s = spltty(); 916 if (tp->t_state & TS_BUSY) { 917 if ((tp->t_state & TS_TTSTOP) == 0) 918 tp->t_state |= TS_FLUSH; 919 sc->sc_flags |= SABTTYF_STOP; 920 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 921 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 922 } 923 splx(s); 924 } 925 926 int 927 sabpoll(dev, events, p) 928 dev_t dev; 929 int events; 930 struct proc *p; 931 { 932 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(dev)); 933 struct tty *tp = sc->sc_tty; 934 935 return ((*tp->t_linesw->l_poll)(tp, events, p)); 936 } 937 938 int 939 sabtty_mdmctrl(sc, bits, how) 940 struct sabtty_softc *sc; 941 int bits, how; 942 { 943 u_int8_t r; 944 int s; 945 946 s = spltty(); 947 switch (how) { 948 case DMGET: 949 bits = 0; 950 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 951 bits |= TIOCM_CTS; 952 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 953 bits |= TIOCM_CD; 954 955 r = SAB_READ(sc, SAB_PVR); 956 if ((r & sc->sc_pvr_dtr) == 0) 957 bits |= TIOCM_DTR; 958 if ((r & sc->sc_pvr_dsr) == 0) 959 bits |= TIOCM_DSR; 960 961 r = SAB_READ(sc, SAB_MODE); 962 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 963 bits |= TIOCM_RTS; 964 break; 965 case DMSET: 966 r = SAB_READ(sc, SAB_MODE); 967 if (bits & TIOCM_RTS) { 968 r &= ~SAB_MODE_FRTS; 969 r |= SAB_MODE_RTS; 970 } else 971 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 972 SAB_WRITE(sc, SAB_MODE, r); 973 974 r = SAB_READ(sc, SAB_PVR); 975 if (bits & TIOCM_DTR) 976 r &= ~sc->sc_pvr_dtr; 977 else 978 r |= sc->sc_pvr_dtr; 979 SAB_WRITE(sc, SAB_PVR, r); 980 break; 981 case DMBIS: 982 if (bits & TIOCM_RTS) { 983 r = SAB_READ(sc, SAB_MODE); 984 r &= ~SAB_MODE_FRTS; 985 r |= SAB_MODE_RTS; 986 SAB_WRITE(sc, SAB_MODE, r); 987 } 988 if (bits & TIOCM_DTR) { 989 r = SAB_READ(sc, SAB_PVR); 990 r &= ~sc->sc_pvr_dtr; 991 SAB_WRITE(sc, SAB_PVR, r); 992 } 993 break; 994 case DMBIC: 995 if (bits & TIOCM_RTS) { 996 r = SAB_READ(sc, SAB_MODE); 997 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 998 SAB_WRITE(sc, SAB_MODE, r); 999 } 1000 if (bits & TIOCM_DTR) { 1001 r = SAB_READ(sc, SAB_PVR); 1002 r |= sc->sc_pvr_dtr; 1003 SAB_WRITE(sc, SAB_PVR, r); 1004 } 1005 break; 1006 } 1007 splx(s); 1008 return (bits); 1009 } 1010 1011 int 1012 sabttyparam(sc, tp, t) 1013 struct sabtty_softc *sc; 1014 struct tty *tp; 1015 struct termios *t; 1016 { 1017 int s, ospeed; 1018 tcflag_t cflag; 1019 u_int8_t dafo, r; 1020 1021 ospeed = sabtty_speed(t->c_ospeed); 1022 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1023 return (EINVAL); 1024 1025 s = spltty(); 1026 1027 /* hang up line if ospeed is zero, otherwise raise dtr */ 1028 sabtty_mdmctrl(sc, TIOCM_DTR, 1029 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1030 1031 dafo = SAB_READ(sc, SAB_DAFO); 1032 1033 cflag = t->c_cflag; 1034 1035 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1036 cflag |= CLOCAL; 1037 cflag &= ~HUPCL; 1038 } 1039 1040 if (cflag & CSTOPB) 1041 dafo |= SAB_DAFO_STOP; 1042 else 1043 dafo &= ~SAB_DAFO_STOP; 1044 1045 dafo &= ~SAB_DAFO_CHL_CSIZE; 1046 switch (cflag & CSIZE) { 1047 case CS5: 1048 dafo |= SAB_DAFO_CHL_CS5; 1049 break; 1050 case CS6: 1051 dafo |= SAB_DAFO_CHL_CS6; 1052 break; 1053 case CS7: 1054 dafo |= SAB_DAFO_CHL_CS7; 1055 break; 1056 default: 1057 dafo |= SAB_DAFO_CHL_CS8; 1058 break; 1059 } 1060 1061 dafo &= ~SAB_DAFO_PARMASK; 1062 if (cflag & PARENB) { 1063 if (cflag & PARODD) 1064 dafo |= SAB_DAFO_PAR_ODD; 1065 else 1066 dafo |= SAB_DAFO_PAR_EVEN; 1067 } else 1068 dafo |= SAB_DAFO_PAR_NONE; 1069 1070 if (ospeed != 0) { 1071 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1072 r = SAB_READ(sc, SAB_CCR2); 1073 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1074 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1075 SAB_WRITE(sc, SAB_CCR2, r); 1076 } 1077 1078 r = SAB_READ(sc, SAB_MODE); 1079 r |= SAB_MODE_RAC; 1080 if (cflag & CRTSCTS) { 1081 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1082 r |= SAB_MODE_FRTS; 1083 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1084 } else { 1085 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1086 r &= ~SAB_MODE_FRTS; 1087 sc->sc_imr1 |= SAB_IMR1_CSC; 1088 } 1089 SAB_WRITE(sc, SAB_MODE, r); 1090 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1091 1092 tp->t_cflag = cflag; 1093 1094 splx(s); 1095 return (0); 1096 } 1097 1098 int 1099 sabtty_param(tp, t) 1100 struct tty *tp; 1101 struct termios *t; 1102 { 1103 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1104 1105 return (sabttyparam(sc, tp, t)); 1106 } 1107 1108 void 1109 sabtty_start(tp) 1110 struct tty *tp; 1111 { 1112 struct sabtty_softc *sc = device_lookup(&sabtty_cd, SABUNIT(tp->t_dev)); 1113 int s; 1114 1115 s = spltty(); 1116 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1117 if (tp->t_outq.c_cc <= tp->t_lowat) { 1118 if (tp->t_state & TS_ASLEEP) { 1119 tp->t_state &= ~TS_ASLEEP; 1120 wakeup(&tp->t_outq); 1121 } 1122 selwakeup(&tp->t_wsel); 1123 } 1124 if (tp->t_outq.c_cc) { 1125 sc->sc_txc = ndqb(&tp->t_outq, 0); 1126 sc->sc_txp = tp->t_outq.c_cf; 1127 tp->t_state |= TS_BUSY; 1128 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1129 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1130 } 1131 } 1132 splx(s); 1133 } 1134 1135 void 1136 sabtty_cec_wait(sc) 1137 struct sabtty_softc *sc; 1138 { 1139 int i = 50000; 1140 1141 for (;;) { 1142 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1143 return; 1144 if (--i == 0) 1145 break; 1146 DELAY(1); 1147 } 1148 } 1149 1150 void 1151 sabtty_tec_wait(sc) 1152 struct sabtty_softc *sc; 1153 { 1154 int i = 200000; 1155 1156 for (;;) { 1157 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1158 return; 1159 if (--i == 0) 1160 break; 1161 DELAY(1); 1162 } 1163 } 1164 1165 void 1166 sabtty_reset(sc) 1167 struct sabtty_softc *sc; 1168 { 1169 /* power down */ 1170 SAB_WRITE(sc, SAB_CCR0, 0); 1171 1172 /* set basic configuration */ 1173 SAB_WRITE(sc, SAB_CCR0, 1174 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1175 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1176 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1177 SAB_WRITE(sc, SAB_CCR3, 0); 1178 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG); 1179 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1180 SAB_WRITE(sc, SAB_RFC, 1181 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1182 1183 /* clear interrupts */ 1184 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1185 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1186 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1187 SAB_READ(sc, SAB_ISR0); 1188 SAB_READ(sc, SAB_ISR1); 1189 } 1190 1191 void 1192 sabtty_flush(sc) 1193 struct sabtty_softc *sc; 1194 { 1195 /* clear rx fifo */ 1196 sabtty_cec_wait(sc); 1197 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1198 1199 /* clear tx fifo */ 1200 sabtty_cec_wait(sc); 1201 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1202 } 1203 1204 int 1205 sabtty_speed(rate) 1206 int rate; 1207 { 1208 int i, len, r; 1209 1210 if (rate == 0) 1211 return (0); 1212 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1213 for (i = 0; i < len; i++) { 1214 if (rate == sabtty_baudtable[i].baud) { 1215 r = sabtty_baudtable[i].n | 1216 (sabtty_baudtable[i].m << 6); 1217 return (r); 1218 } 1219 } 1220 return (-1); 1221 } 1222 1223 void 1224 sabtty_cnputc(sc, c) 1225 struct sabtty_softc *sc; 1226 int c; 1227 { 1228 sabtty_tec_wait(sc); 1229 SAB_WRITE(sc, SAB_TIC, c); 1230 sabtty_tec_wait(sc); 1231 } 1232 1233 int 1234 sabtty_cngetc(sc) 1235 struct sabtty_softc *sc; 1236 { 1237 u_int8_t r, len; 1238 1239 again: 1240 do { 1241 r = SAB_READ(sc, SAB_STAR); 1242 } while ((r & SAB_STAR_RFNE) == 0); 1243 1244 /* 1245 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1246 * (I hate this chip... hate hate hate). 1247 */ 1248 sabtty_cec_wait(sc); 1249 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1250 1251 /* Wait for RFIFO to come ready */ 1252 do { 1253 r = SAB_READ(sc, SAB_ISR0); 1254 } while ((r & SAB_ISR0_TCD) == 0); 1255 1256 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1257 if (len == 0) 1258 goto again; /* Shouldn't happen... */ 1259 1260 r = SAB_READ(sc, SAB_RFIFO); 1261 1262 /* 1263 * Blow away everything left in the FIFO... 1264 */ 1265 sabtty_cec_wait(sc); 1266 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1267 return (r); 1268 } 1269 1270 void 1271 sabtty_cnpollc(sc, on) 1272 struct sabtty_softc *sc; 1273 int on; 1274 { 1275 u_int8_t r; 1276 1277 if (on) { 1278 if (sc->sc_polling) 1279 return; 1280 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1281 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1282 r &= ~(SAB_RFC_RFDF); 1283 SAB_WRITE(sc, SAB_RFC, r); 1284 sabtty_cec_wait(sc); 1285 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1286 sc->sc_polling = 1; 1287 } else { 1288 if (!sc->sc_polling) 1289 return; 1290 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1291 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1292 sabtty_cec_wait(sc); 1293 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1294 sc->sc_polling = 0; 1295 } 1296 } 1297 1298 void 1299 sab_cnputc(dev, c) 1300 dev_t dev; 1301 int c; 1302 { 1303 struct sabtty_softc *sc = sabtty_cons_output; 1304 1305 if (sc == NULL) 1306 return; 1307 sabtty_cnputc(sc, c); 1308 } 1309 1310 void 1311 sab_cnpollc(dev, on) 1312 dev_t dev; 1313 int on; 1314 { 1315 struct sabtty_softc *sc = sabtty_cons_input; 1316 1317 sabtty_cnpollc(sc, on); 1318 } 1319 1320 int 1321 sab_cngetc(dev) 1322 dev_t dev; 1323 { 1324 struct sabtty_softc *sc = sabtty_cons_input; 1325 1326 if (sc == NULL) 1327 return (-1); 1328 return (sabtty_cngetc(sc)); 1329 } 1330 1331 void 1332 sabtty_console_flags(sc) 1333 struct sabtty_softc *sc; 1334 { 1335 int node, channel, cookie; 1336 char buf[255]; 1337 1338 node = sc->sc_parent->sc_node; 1339 channel = sc->sc_portno; 1340 1341 /* Default to channel 0 if there are no explicit prom args */ 1342 cookie = 0; 1343 1344 if (node == prom_instance_to_package(prom_stdin())) { 1345 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1346 strcmp("ttyb", buf) == 0) 1347 cookie = 1; 1348 1349 if (channel == cookie) 1350 sc->sc_flags |= SABTTYF_CONS_IN; 1351 } 1352 1353 /* Default to same channel if there are no explicit prom args */ 1354 1355 if (node == prom_instance_to_package(prom_stdout())) { 1356 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1357 strcmp("ttyb", buf) == 0) 1358 cookie = 1; 1359 1360 if (channel == cookie) 1361 sc->sc_flags |= SABTTYF_CONS_OUT; 1362 } 1363 } 1364 1365 void 1366 sabtty_shutdown(vsc) 1367 void *vsc; 1368 { 1369 struct sabtty_softc *sc = vsc; 1370 1371 /* Have to put the chip back into single char mode */ 1372 sc->sc_flags |= SABTTYF_DONTDDB; 1373 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1374 sabtty_cec_wait(sc); 1375 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1376 sabtty_cec_wait(sc); 1377 } 1378
Indexes created Thu Sep 25 16:09:42 GMT 2025