sab.c revision 1.48
1 /* $NetBSD: sab.c,v 1.48 2011/06/02 00:24:23 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 1.48 2011/06/02 00:24:23 christos Exp $"); 46 47 #include "opt_kgdb.h" 48 #include <sys/types.h> 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/device.h> 52 #include <sys/conf.h> 53 #include <sys/file.h> 54 #include <sys/ioctl.h> 55 #include <sys/kernel.h> 56 #include <sys/proc.h> 57 #include <sys/tty.h> 58 #include <sys/syslog.h> 59 #include <sys/kauth.h> 60 #include <sys/kgdb.h> 61 #include <sys/intr.h> 62 63 #include <machine/autoconf.h> 64 #include <machine/openfirm.h> 65 66 #include <dev/cons.h> 67 68 #include <dev/ebus/ebusreg.h> 69 #include <dev/ebus/ebusvar.h> 70 #include <sparc64/dev/sab82532reg.h> 71 72 #include "locators.h" 73 74 #define SABUNIT(x) (minor(x) & 0x7ffff) 75 #define SABDIALOUT(x) (minor(x) & 0x80000) 76 77 #define SABTTY_RBUF_SIZE 1024 /* must be divisible by 2 */ 78 79 struct sab_softc { 80 device_t sc_dev; 81 struct intrhand * sc_ih; 82 bus_space_tag_t sc_bt; 83 bus_space_handle_t sc_bh; 84 struct sabtty_softc * sc_child[SAB_NCHAN]; 85 u_int sc_nchild; 86 void * sc_softintr; 87 int sc_node; 88 }; 89 90 struct sabtty_attach_args { 91 u_int sbt_portno; 92 }; 93 94 struct sabtty_softc { 95 device_t sc_dev; 96 struct sab_softc * sc_parent; 97 bus_space_tag_t sc_bt; 98 bus_space_handle_t sc_bh; 99 struct tty * sc_tty; 100 u_int sc_portno; 101 uint8_t sc_pvr_dtr, sc_pvr_dsr; 102 uint8_t sc_imr0, sc_imr1; 103 int sc_openflags; 104 u_char * sc_txp; 105 int sc_txc; 106 int sc_flags; 107 #define SABTTYF_STOP 0x0001 108 #define SABTTYF_DONE 0x0002 109 #define SABTTYF_RINGOVERFLOW 0x0004 110 #define SABTTYF_CDCHG 0x0008 111 #define SABTTYF_CONS_IN 0x0010 112 #define SABTTYF_CONS_OUT 0x0020 113 #define SABTTYF_TXDRAIN 0x0040 114 #define SABTTYF_DONTDDB 0x0080 115 #define SABTTYF_IS_RSC 0x0100 116 uint8_t sc_rbuf[SABTTY_RBUF_SIZE]; 117 uint8_t *sc_rend, *sc_rput, *sc_rget; 118 uint8_t sc_polling, sc_pollrfc; 119 }; 120 121 struct sabtty_softc *sabtty_cons_input; 122 struct sabtty_softc *sabtty_cons_output; 123 124 #define SAB_READ(sc,r) \ 125 bus_space_read_1((sc)->sc_bt, (sc)->sc_bh, (r)) 126 #define SAB_WRITE(sc,r,v) \ 127 bus_space_write_1((sc)->sc_bt, (sc)->sc_bh, (r), (v)) 128 #define SAB_WRITE_BLOCK(sc,r,p,c) \ 129 bus_space_write_region_1((sc)->sc_bt, (sc)->sc_bh, (r), (p), (c)) 130 131 int sab_match(device_t, cfdata_t, void *); 132 void sab_attach(device_t, device_t, void *); 133 int sab_print(void *, const char *); 134 int sab_intr(void *); 135 136 void sab_softintr(void *); 137 void sab_cnputc(dev_t, int); 138 int sab_cngetc(dev_t); 139 void sab_cnpollc(dev_t, int); 140 141 int sabtty_match(device_t, cfdata_t, void *); 142 void sabtty_attach(device_t, device_t, void *); 143 void sabtty_start(struct tty *); 144 int sabtty_param(struct tty *, struct termios *); 145 int sabtty_intr(struct sabtty_softc *, int *); 146 void sabtty_softintr(struct sabtty_softc *); 147 int sabtty_mdmctrl(struct sabtty_softc *, int, int); 148 void sabtty_cec_wait(struct sabtty_softc *); 149 void sabtty_tec_wait(struct sabtty_softc *); 150 void sabtty_reset(struct sabtty_softc *); 151 void sabtty_flush(struct sabtty_softc *); 152 int sabtty_speed(int); 153 void sabtty_console_flags(struct sabtty_softc *); 154 void sabtty_cnpollc(struct sabtty_softc *, int); 155 void sabtty_shutdown(void *); 156 int sabttyparam(struct sabtty_softc *, struct tty *, struct termios *); 157 158 #ifdef KGDB 159 int sab_kgdb_check(struct sabtty_softc *); 160 void sab_kgdb_init(struct sabtty_softc *); 161 #endif 162 163 void sabtty_cnputc(struct sabtty_softc *, int); 164 int sabtty_cngetc(struct sabtty_softc *); 165 166 CFATTACH_DECL_NEW(sab, sizeof(struct sab_softc), 167 sab_match, sab_attach, NULL, NULL); 168 169 extern struct cfdriver sab_cd; 170 171 CFATTACH_DECL_NEW(sabtty, sizeof(struct sabtty_softc), 172 sabtty_match, sabtty_attach, NULL, NULL); 173 174 extern struct cfdriver sabtty_cd; 175 176 dev_type_open(sabopen); 177 dev_type_close(sabclose); 178 dev_type_read(sabread); 179 dev_type_write(sabwrite); 180 dev_type_ioctl(sabioctl); 181 dev_type_stop(sabstop); 182 dev_type_tty(sabtty); 183 dev_type_poll(sabpoll); 184 185 static struct cnm_state sabtty_cnm_state; 186 187 const struct cdevsw sabtty_cdevsw = { 188 sabopen, sabclose, sabread, sabwrite, sabioctl, 189 sabstop, sabtty, sabpoll, nommap, ttykqfilter, D_TTY 190 }; 191 192 struct sabtty_rate { 193 int baud; 194 int n, m; 195 }; 196 197 struct sabtty_rate sabtty_baudtable[] = { 198 { 50, 35, 10 }, 199 { 75, 47, 9 }, 200 { 110, 32, 9 }, 201 { 134, 53, 8 }, 202 { 150, 47, 8 }, 203 { 200, 35, 8 }, 204 { 300, 47, 7 }, 205 { 600, 47, 6 }, 206 { 1200, 47, 5 }, 207 { 1800, 31, 5 }, 208 { 2400, 47, 4 }, 209 { 4800, 47, 3 }, 210 { 9600, 47, 2 }, 211 { 19200, 47, 1 }, 212 { 38400, 23, 1 }, 213 { 57600, 15, 1 }, 214 { 115200, 7, 1 }, 215 { 230400, 3, 1 }, 216 { 460800, 1, 1 }, 217 { 76800, 11, 1 }, 218 { 153600, 5, 1 }, 219 { 307200, 3, 1 }, 220 { 614400, 3, 0 }, 221 { 921600, 0, 1 }, 222 }; 223 224 int 225 sab_match(device_t parent, cfdata_t match, void *aux) 226 { 227 struct ebus_attach_args *ea = aux; 228 char *compat; 229 230 if (strcmp(ea->ea_name, "se") == 0 || 231 strcmp(ea->ea_name, "FJSV,se") == 0) 232 return (1); 233 234 compat = prom_getpropstring(ea->ea_node, "compatible"); 235 if (compat != NULL && !strcmp(compat, "sab82532")) 236 return (1); 237 238 return (0); 239 } 240 241 void 242 sab_attach(device_t parent, device_t self, void *aux) 243 { 244 struct sab_softc *sc = device_private(self); 245 struct ebus_attach_args *ea = aux; 246 uint8_t r; 247 u_int i; 248 int locs[SABCF_NLOCS]; 249 250 sc->sc_dev = self; 251 sc->sc_bt = ea->ea_bustag; 252 sc->sc_node = ea->ea_node; 253 254 /* Use prom mapping, if available. */ 255 if (ea->ea_nvaddr) 256 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], 257 &sc->sc_bh); 258 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 259 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 260 printf(": can't map register space\n"); 261 return; 262 } 263 264 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 265 IPL_TTY, sab_intr, sc); 266 if (sc->sc_ih == NULL) { 267 printf(": can't map interrupt\n"); 268 return; 269 } 270 271 sc->sc_softintr = softint_establish(SOFTINT_SERIAL, sab_softintr, sc); 272 if (sc->sc_softintr == NULL) { 273 printf(": can't get soft intr\n"); 274 return; 275 } 276 277 aprint_normal(": rev "); 278 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 279 switch (r) { 280 case SAB_VSTR_V_1: 281 aprint_normal("1"); 282 break; 283 case SAB_VSTR_V_2: 284 aprint_normal("2"); 285 break; 286 case SAB_VSTR_V_32: 287 aprint_normal("3.2"); 288 break; 289 default: 290 aprint_normal("unknown(0x%x)", r); 291 break; 292 } 293 aprint_normal("\n"); 294 aprint_naive(": Serial controller\n"); 295 296 /* Let current output drain */ 297 DELAY(100000); 298 299 /* Set all pins, except DTR pins to be inputs */ 300 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 301 /* Disable port interrupts */ 302 SAB_WRITE(sc, SAB_PIM, 0xff); 303 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 304 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 305 306 for (i = 0; i < SAB_NCHAN; i++) { 307 struct sabtty_attach_args stax; 308 309 stax.sbt_portno = i; 310 311 locs[SABCF_CHANNEL] = i; 312 313 sc->sc_child[i] = device_private(config_found_sm_loc(self, 314 "sab", locs, &stax, sab_print, config_stdsubmatch)); 315 if (sc->sc_child[i] != NULL) 316 sc->sc_nchild++; 317 } 318 } 319 320 int 321 sab_print(void *args, const char *name) 322 { 323 struct sabtty_attach_args *sa = args; 324 325 if (name) 326 aprint_normal("sabtty at %s", name); 327 aprint_normal(" port %u", sa->sbt_portno); 328 return (UNCONF); 329 } 330 331 int 332 sab_intr(void *vsc) 333 { 334 struct sab_softc *sc = vsc; 335 int r = 0, needsoft = 0; 336 uint8_t gis; 337 338 gis = SAB_READ(sc, SAB_GIS); 339 340 /* channel A */ 341 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 342 sc->sc_child[0]->sc_tty) 343 r |= sabtty_intr(sc->sc_child[0], &needsoft); 344 345 /* channel B */ 346 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 347 sc->sc_child[1]->sc_tty) 348 r |= sabtty_intr(sc->sc_child[1], &needsoft); 349 350 if (needsoft) 351 softint_schedule(sc->sc_softintr); 352 353 return (r); 354 } 355 356 void 357 sab_softintr(void *vsc) 358 { 359 struct sab_softc *sc = vsc; 360 361 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 362 sabtty_softintr(sc->sc_child[0]); 363 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 364 sabtty_softintr(sc->sc_child[1]); 365 } 366 367 int 368 sabtty_match(device_t parent, cfdata_t match, void *aux) 369 { 370 371 return (1); 372 } 373 374 void 375 sabtty_attach(device_t parent, device_t self, void *aux) 376 { 377 struct sabtty_softc *sc = device_private(self); 378 struct sabtty_attach_args *sa = aux; 379 int r; 380 int maj; 381 int is_kgdb = 0; 382 383 sc->sc_dev = self; 384 #ifdef KGDB 385 is_kgdb = sab_kgdb_check(sc); 386 #endif 387 388 if (!is_kgdb) { 389 sc->sc_tty = tty_alloc(); 390 if (sc->sc_tty == NULL) { 391 aprint_normal(": failed to allocate tty\n"); 392 return; 393 } 394 tty_attach(sc->sc_tty); 395 sc->sc_tty->t_oproc = sabtty_start; 396 sc->sc_tty->t_param = sabtty_param; 397 } 398 399 sc->sc_parent = device_private(parent); 400 sc->sc_bt = sc->sc_parent->sc_bt; 401 sc->sc_portno = sa->sbt_portno; 402 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 403 404 switch (sa->sbt_portno) { 405 case 0: /* port A */ 406 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 407 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 408 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 409 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 410 break; 411 case 1: /* port B */ 412 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 413 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 414 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 415 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 416 break; 417 default: 418 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 419 return; 420 } 421 if (r != 0) { 422 aprint_normal(": failed to allocate register subregion\n"); 423 return; 424 } 425 426 sabtty_console_flags(sc); 427 428 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 429 struct termios t; 430 const char *acc; 431 432 /* Let residual prom output drain */ 433 DELAY(100000); 434 435 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 436 case SABTTYF_CONS_IN: 437 acc = "input"; 438 break; 439 case SABTTYF_CONS_OUT: 440 acc = "output"; 441 break; 442 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 443 default: 444 acc = "i/o"; 445 break; 446 } 447 448 t.c_ispeed= 0; 449 if (sc->sc_flags & SABTTYF_IS_RSC) 450 t.c_ospeed = 115200; 451 else 452 t.c_ospeed = 9600; 453 t.c_cflag = CREAD | CS8 | HUPCL; 454 sc->sc_tty->t_ospeed = 0; 455 sabttyparam(sc, sc->sc_tty, &t); 456 457 if (sc->sc_flags & SABTTYF_CONS_IN) { 458 sabtty_cons_input = sc; 459 cn_tab->cn_pollc = sab_cnpollc; 460 cn_tab->cn_getc = sab_cngetc; 461 maj = cdevsw_lookup_major(&sabtty_cdevsw); 462 cn_tab->cn_dev = makedev(maj, device_unit(self)); 463 shutdownhook_establish(sabtty_shutdown, sc); 464 cn_init_magic(&sabtty_cnm_state); 465 cn_set_magic("\047\001"); /* default magic is BREAK */ 466 } 467 468 if (sc->sc_flags & SABTTYF_CONS_OUT) { 469 sabtty_tec_wait(sc); 470 sabtty_cons_output = sc; 471 cn_tab->cn_putc = sab_cnputc; 472 maj = cdevsw_lookup_major(&sabtty_cdevsw); 473 cn_tab->cn_dev = makedev(maj, device_unit(self)); 474 } 475 aprint_normal(": console %s", acc); 476 } else { 477 /* Not a console... */ 478 sabtty_reset(sc); 479 480 #ifdef KGDB 481 if (is_kgdb) { 482 sab_kgdb_init(sc); 483 aprint_normal(": kgdb"); 484 } 485 #endif 486 } 487 488 aprint_normal("\n"); 489 aprint_naive(": Serial port\n"); 490 } 491 492 int 493 sabtty_intr(struct sabtty_softc *sc, int *needsoftp) 494 { 495 uint8_t isr0, isr1; 496 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 497 498 isr0 = SAB_READ(sc, SAB_ISR0); 499 isr1 = SAB_READ(sc, SAB_ISR1); 500 501 if (isr0 || isr1) 502 r = 1; 503 504 if (isr0 & SAB_ISR0_RPF) { 505 len = 32; 506 clearfifo = 1; 507 } 508 if (isr0 & SAB_ISR0_TCD) { 509 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 510 clearfifo = 1; 511 } 512 if (isr0 & SAB_ISR0_TIME) { 513 sabtty_cec_wait(sc); 514 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 515 } 516 if (isr0 & SAB_ISR0_RFO) { 517 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 518 clearfifo = 1; 519 } 520 if (len != 0) { 521 uint8_t *ptr, b; 522 523 ptr = sc->sc_rput; 524 for (i = 0; i < len; i++) { 525 b = SAB_READ(sc, SAB_RFIFO); 526 if (i % 2 == 0) /* skip status byte */ 527 cn_check_magic(sc->sc_tty->t_dev, 528 b, sabtty_cnm_state); 529 *ptr++ = b; 530 if (ptr == sc->sc_rend) 531 ptr = sc->sc_rbuf; 532 if (ptr == sc->sc_rget) { 533 if (ptr == sc->sc_rbuf) 534 ptr = sc->sc_rend; 535 ptr--; 536 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 537 } 538 } 539 sc->sc_rput = ptr; 540 needsoft = 1; 541 } 542 543 if (clearfifo) { 544 sabtty_cec_wait(sc); 545 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 546 } 547 548 if (isr0 & SAB_ISR0_CDSC) { 549 sc->sc_flags |= SABTTYF_CDCHG; 550 needsoft = 1; 551 } 552 553 if (isr1 & SAB_ISR1_BRKT) 554 cn_check_magic(sc->sc_tty->t_dev, 555 CNC_BREAK, sabtty_cnm_state); 556 557 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 558 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 559 (sc->sc_flags & SABTTYF_STOP) == 0) { 560 if (sc->sc_txc < 32) 561 len = sc->sc_txc; 562 else 563 len = 32; 564 565 if (len > 0) { 566 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 567 sc->sc_txp += len; 568 sc->sc_txc -= len; 569 570 sabtty_cec_wait(sc); 571 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 572 573 /* 574 * Prevent the false end of xmit from 575 * confusing things below. 576 */ 577 isr1 &= ~SAB_ISR1_ALLS; 578 } 579 } 580 581 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 582 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 583 sc->sc_imr1 |= SAB_IMR1_XPR; 584 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 585 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 586 } 587 } 588 } 589 590 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 591 (sc->sc_flags & SABTTYF_STOP))) { 592 if (sc->sc_flags & SABTTYF_TXDRAIN) 593 wakeup(sc); 594 sc->sc_flags &= ~SABTTYF_STOP; 595 sc->sc_flags |= SABTTYF_DONE; 596 sc->sc_imr1 |= SAB_IMR1_ALLS; 597 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 598 needsoft = 1; 599 } 600 601 if (needsoft) 602 *needsoftp = needsoft; 603 return (r); 604 } 605 606 void 607 sabtty_softintr(struct sabtty_softc *sc) 608 { 609 struct tty *tp = sc->sc_tty; 610 int s, flags; 611 uint8_t r; 612 613 if (tp == NULL) 614 return; 615 616 if ((tp->t_state & TS_ISOPEN) == 0) 617 return; 618 619 while (sc->sc_rget != sc->sc_rput) { 620 int data; 621 uint8_t stat; 622 623 data = sc->sc_rget[0]; 624 stat = sc->sc_rget[1]; 625 sc->sc_rget += 2; 626 if (stat & SAB_RSTAT_PE) 627 data |= TTY_PE; 628 if (stat & SAB_RSTAT_FE) 629 data |= TTY_FE; 630 if (sc->sc_rget == sc->sc_rend) 631 sc->sc_rget = sc->sc_rbuf; 632 633 (*tp->t_linesw->l_rint)(data, tp); 634 } 635 636 s = splhigh(); 637 flags = sc->sc_flags; 638 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 639 splx(s); 640 641 if (flags & SABTTYF_CDCHG) { 642 s = spltty(); 643 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 644 splx(s); 645 646 (*tp->t_linesw->l_modem)(tp, r); 647 } 648 649 if (flags & SABTTYF_RINGOVERFLOW) 650 log(LOG_WARNING, "%s: ring overflow\n", 651 device_xname(sc->sc_dev)); 652 653 if (flags & SABTTYF_DONE) { 654 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 655 tp->t_state &= ~TS_BUSY; 656 (*tp->t_linesw->l_start)(tp); 657 } 658 } 659 660 int 661 sabopen(dev_t dev, int flags, int mode, struct lwp *l) 662 { 663 struct sabtty_softc *sc; 664 struct tty *tp; 665 struct proc *p; 666 int s, s1; 667 668 sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 669 if (sc == NULL) 670 return (ENXIO); 671 672 tp = sc->sc_tty; 673 tp->t_dev = dev; 674 p = l->l_proc; 675 676 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 677 return (EBUSY); 678 679 mutex_spin_enter(&tty_lock); 680 if ((tp->t_state & TS_ISOPEN) == 0) { 681 ttychars(tp); 682 tp->t_iflag = TTYDEF_IFLAG; 683 tp->t_oflag = TTYDEF_OFLAG; 684 tp->t_cflag = TTYDEF_CFLAG; 685 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 686 tp->t_cflag |= CLOCAL; 687 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 688 tp->t_cflag |= CRTSCTS; 689 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 690 tp->t_cflag |= MDMBUF; 691 tp->t_lflag = TTYDEF_LFLAG; 692 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 693 694 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 695 696 ttsetwater(tp); 697 698 s1 = splhigh(); 699 sabtty_reset(sc); 700 sabtty_param(tp, &tp->t_termios); 701 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 702 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 703 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 704 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 705 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 706 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 707 sabtty_cec_wait(sc); 708 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 709 sabtty_cec_wait(sc); 710 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 711 sabtty_cec_wait(sc); 712 splx(s1); 713 714 sabtty_flush(sc); 715 716 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 717 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 718 tp->t_state |= TS_CARR_ON; 719 else 720 tp->t_state &= ~TS_CARR_ON; 721 } 722 723 if ((flags & O_NONBLOCK) == 0) { 724 while ((tp->t_cflag & CLOCAL) == 0 && 725 (tp->t_state & TS_CARR_ON) == 0) { 726 int error; 727 728 error = ttysleep(tp, &tp->t_rawcv, true, 0); 729 if (error != 0) { 730 mutex_spin_exit(&tty_lock); 731 return (error); 732 } 733 } 734 } 735 736 mutex_spin_exit(&tty_lock); 737 738 s = (*tp->t_linesw->l_open)(dev, tp); 739 if (s != 0) { 740 mutex_spin_enter(&tty_lock); 741 if (tp->t_state & TS_ISOPEN) { 742 mutex_spin_exit(&tty_lock); 743 return (s); 744 } 745 if (tp->t_cflag & HUPCL) { 746 sabtty_mdmctrl(sc, 0, DMSET); 747 cv_wait(&lbolt, &tty_lock); 748 } 749 750 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 751 /* Flush and power down if we're not the console */ 752 sabtty_flush(sc); 753 sabtty_reset(sc); 754 } 755 mutex_spin_exit(&tty_lock); 756 } 757 return (s); 758 } 759 760 int 761 sabclose(dev_t dev, int flags, int mode, struct lwp *l) 762 { 763 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 764 struct sab_softc *bc = sc->sc_parent; 765 struct tty *tp = sc->sc_tty; 766 int s; 767 768 (*tp->t_linesw->l_close)(tp, flags); 769 770 s = spltty(); 771 772 if ((tp->t_state & TS_ISOPEN) == 0) { 773 /* Wait for output drain */ 774 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 775 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 776 sc->sc_flags |= SABTTYF_TXDRAIN; 777 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 778 sc->sc_imr1 |= SAB_IMR1_ALLS; 779 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 780 sc->sc_flags &= ~SABTTYF_TXDRAIN; 781 782 if (tp->t_cflag & HUPCL) { 783 sabtty_mdmctrl(sc, 0, DMSET); 784 (void)tsleep(bc, TTIPRI, ttclos, hz); 785 } 786 787 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 788 /* Flush and power down if we're not the console */ 789 sabtty_flush(sc); 790 sabtty_reset(sc); 791 } 792 } 793 794 ttyclose(tp); 795 splx(s); 796 797 return (0); 798 } 799 800 int 801 sabread(dev_t dev, struct uio *uio, int flags) 802 { 803 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 804 struct tty *tp = sc->sc_tty; 805 806 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 807 } 808 809 int 810 sabwrite(dev_t dev, struct uio *uio, int flags) 811 { 812 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 813 struct tty *tp = sc->sc_tty; 814 815 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 816 } 817 818 int 819 sabioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 820 { 821 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 822 struct tty *tp = sc->sc_tty; 823 int error; 824 825 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 826 if (error >= 0) 827 return (error); 828 829 error = ttioctl(tp, cmd, data, flags, l); 830 if (error >= 0) 831 return (error); 832 833 error = 0; 834 835 switch (cmd) { 836 case TIOCSBRK: 837 SAB_WRITE(sc, SAB_DAFO, 838 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 839 break; 840 case TIOCCBRK: 841 SAB_WRITE(sc, SAB_DAFO, 842 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 843 break; 844 case TIOCSDTR: 845 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 846 break; 847 case TIOCCDTR: 848 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 849 break; 850 case TIOCMBIS: 851 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 852 break; 853 case TIOCMBIC: 854 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 855 break; 856 case TIOCMGET: 857 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 858 break; 859 case TIOCMSET: 860 sabtty_mdmctrl(sc, *((int *)data), DMSET); 861 break; 862 case TIOCGFLAGS: 863 *((int *)data) = sc->sc_openflags; 864 break; 865 case TIOCSFLAGS: 866 if (kauth_authorize_device_tty(l->l_cred, 867 KAUTH_DEVICE_TTY_PRIVSET, tp)) 868 error = EPERM; 869 else 870 sc->sc_openflags = *((int *)data) & 871 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 872 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 873 break; 874 default: 875 error = ENOTTY; 876 } 877 878 return (error); 879 } 880 881 struct tty * 882 sabtty(dev_t dev) 883 { 884 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 885 886 return (sc->sc_tty); 887 } 888 889 void 890 sabstop(struct tty *tp, int flag) 891 { 892 struct sabtty_softc *sc = device_lookup_private(&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_t dev, int events, struct lwp *l) 908 { 909 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 910 struct tty *tp = sc->sc_tty; 911 912 return ((*tp->t_linesw->l_poll)(tp, events, l)); 913 } 914 915 int 916 sabtty_mdmctrl(struct sabtty_softc *sc, int bits, int how) 917 { 918 uint8_t r; 919 int s; 920 921 s = spltty(); 922 switch (how) { 923 case DMGET: 924 bits = 0; 925 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 926 bits |= TIOCM_CTS; 927 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 928 bits |= TIOCM_CD; 929 930 r = SAB_READ(sc, SAB_PVR); 931 if ((r & sc->sc_pvr_dtr) == 0) 932 bits |= TIOCM_DTR; 933 if ((r & sc->sc_pvr_dsr) == 0) 934 bits |= TIOCM_DSR; 935 936 r = SAB_READ(sc, SAB_MODE); 937 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 938 bits |= TIOCM_RTS; 939 break; 940 case DMSET: 941 r = SAB_READ(sc, SAB_MODE); 942 if (bits & TIOCM_RTS) { 943 r &= ~SAB_MODE_FRTS; 944 r |= SAB_MODE_RTS; 945 } else 946 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 947 SAB_WRITE(sc, SAB_MODE, r); 948 949 r = SAB_READ(sc, SAB_PVR); 950 if (bits & TIOCM_DTR) 951 r &= ~sc->sc_pvr_dtr; 952 else 953 r |= sc->sc_pvr_dtr; 954 SAB_WRITE(sc, SAB_PVR, r); 955 break; 956 case DMBIS: 957 if (bits & TIOCM_RTS) { 958 r = SAB_READ(sc, SAB_MODE); 959 r &= ~SAB_MODE_FRTS; 960 r |= SAB_MODE_RTS; 961 SAB_WRITE(sc, SAB_MODE, r); 962 } 963 if (bits & TIOCM_DTR) { 964 r = SAB_READ(sc, SAB_PVR); 965 r &= ~sc->sc_pvr_dtr; 966 SAB_WRITE(sc, SAB_PVR, r); 967 } 968 break; 969 case DMBIC: 970 if (bits & TIOCM_RTS) { 971 r = SAB_READ(sc, SAB_MODE); 972 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 973 SAB_WRITE(sc, SAB_MODE, r); 974 } 975 if (bits & TIOCM_DTR) { 976 r = SAB_READ(sc, SAB_PVR); 977 r |= sc->sc_pvr_dtr; 978 SAB_WRITE(sc, SAB_PVR, r); 979 } 980 break; 981 } 982 splx(s); 983 return (bits); 984 } 985 986 int 987 sabttyparam(struct sabtty_softc *sc, struct tty *tp, struct termios *t) 988 { 989 int s, ospeed; 990 tcflag_t cflag; 991 uint8_t dafo, r; 992 993 ospeed = sabtty_speed(t->c_ospeed); 994 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 995 return (EINVAL); 996 997 s = spltty(); 998 999 /* hang up line if ospeed is zero, otherwise raise dtr */ 1000 sabtty_mdmctrl(sc, TIOCM_DTR, 1001 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1002 1003 dafo = SAB_READ(sc, SAB_DAFO); 1004 1005 cflag = t->c_cflag; 1006 1007 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1008 cflag |= CLOCAL; 1009 cflag &= ~HUPCL; 1010 } 1011 1012 if (cflag & CSTOPB) 1013 dafo |= SAB_DAFO_STOP; 1014 else 1015 dafo &= ~SAB_DAFO_STOP; 1016 1017 dafo &= ~SAB_DAFO_CHL_CSIZE; 1018 switch (cflag & CSIZE) { 1019 case CS5: 1020 dafo |= SAB_DAFO_CHL_CS5; 1021 break; 1022 case CS6: 1023 dafo |= SAB_DAFO_CHL_CS6; 1024 break; 1025 case CS7: 1026 dafo |= SAB_DAFO_CHL_CS7; 1027 break; 1028 default: 1029 dafo |= SAB_DAFO_CHL_CS8; 1030 break; 1031 } 1032 1033 dafo &= ~SAB_DAFO_PARMASK; 1034 if (cflag & PARENB) { 1035 if (cflag & PARODD) 1036 dafo |= SAB_DAFO_PAR_ODD; 1037 else 1038 dafo |= SAB_DAFO_PAR_EVEN; 1039 } else 1040 dafo |= SAB_DAFO_PAR_NONE; 1041 SAB_WRITE(sc, SAB_DAFO, dafo); 1042 1043 if (!(sc->sc_flags & SABTTYF_IS_RSC) && ospeed != 0) { 1044 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1045 r = SAB_READ(sc, SAB_CCR2); 1046 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1047 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1048 SAB_WRITE(sc, SAB_CCR2, r); 1049 } 1050 1051 r = SAB_READ(sc, SAB_MODE); 1052 r |= SAB_MODE_RAC; 1053 if (cflag & CRTSCTS) { 1054 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1055 r |= SAB_MODE_FRTS; 1056 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1057 } else { 1058 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1059 r &= ~SAB_MODE_FRTS; 1060 sc->sc_imr1 |= SAB_IMR1_CSC; 1061 } 1062 SAB_WRITE(sc, SAB_MODE, r); 1063 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1064 1065 tp->t_cflag = cflag; 1066 1067 splx(s); 1068 return (0); 1069 } 1070 1071 int 1072 sabtty_param(struct tty *tp, struct termios *t) 1073 { 1074 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 1075 1076 return (sabttyparam(sc, tp, t)); 1077 } 1078 1079 void 1080 sabtty_start(struct tty *tp) 1081 { 1082 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 1083 int s; 1084 1085 s = spltty(); 1086 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1087 if (ttypull(tp)) { 1088 sc->sc_txc = ndqb(&tp->t_outq, 0); 1089 sc->sc_txp = tp->t_outq.c_cf; 1090 tp->t_state |= TS_BUSY; 1091 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1092 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1093 } 1094 } 1095 splx(s); 1096 } 1097 1098 void 1099 sabtty_cec_wait(struct sabtty_softc *sc) 1100 { 1101 int i = 50000; 1102 1103 for (;;) { 1104 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1105 return; 1106 if (--i == 0) 1107 break; 1108 DELAY(1); 1109 } 1110 } 1111 1112 void 1113 sabtty_tec_wait(struct sabtty_softc *sc) 1114 { 1115 int i = 200000; 1116 1117 for (;;) { 1118 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1119 return; 1120 if (--i == 0) 1121 break; 1122 DELAY(1); 1123 } 1124 } 1125 1126 void 1127 sabtty_reset(struct sabtty_softc *sc) 1128 { 1129 /* power down */ 1130 SAB_WRITE(sc, SAB_CCR0, 0); 1131 1132 /* set basic configuration */ 1133 SAB_WRITE(sc, SAB_CCR0, 1134 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1135 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1136 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1137 SAB_WRITE(sc, SAB_CCR3, 0); 1138 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG | SAB_CCR4_ICD); 1139 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1140 SAB_WRITE(sc, SAB_RFC, 1141 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1142 1143 /* clear interrupts */ 1144 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1145 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1146 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1147 (void)SAB_READ(sc, SAB_ISR0); 1148 (void)SAB_READ(sc, SAB_ISR1); 1149 } 1150 1151 void 1152 sabtty_flush(struct sabtty_softc *sc) 1153 { 1154 /* clear rx fifo */ 1155 sabtty_cec_wait(sc); 1156 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1157 1158 /* clear tx fifo */ 1159 sabtty_cec_wait(sc); 1160 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1161 } 1162 1163 int 1164 sabtty_speed(int rate) 1165 { 1166 int i, len, r; 1167 1168 if (rate == 0) 1169 return (0); 1170 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1171 for (i = 0; i < len; i++) { 1172 if (rate == sabtty_baudtable[i].baud) { 1173 r = sabtty_baudtable[i].n | 1174 (sabtty_baudtable[i].m << 6); 1175 return (r); 1176 } 1177 } 1178 return (-1); 1179 } 1180 1181 void 1182 sabtty_cnputc(struct sabtty_softc *sc, int c) 1183 { 1184 sabtty_tec_wait(sc); 1185 SAB_WRITE(sc, SAB_TIC, c); 1186 sabtty_tec_wait(sc); 1187 } 1188 1189 int 1190 sabtty_cngetc(struct sabtty_softc *sc) 1191 { 1192 uint8_t r, len; 1193 1194 again: 1195 do { 1196 r = SAB_READ(sc, SAB_STAR); 1197 } while ((r & SAB_STAR_RFNE) == 0); 1198 1199 /* 1200 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1201 * (I hate this chip... hate hate hate). 1202 */ 1203 sabtty_cec_wait(sc); 1204 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1205 1206 /* Wait for RFIFO to come ready */ 1207 do { 1208 r = SAB_READ(sc, SAB_ISR0); 1209 } while ((r & SAB_ISR0_TCD) == 0); 1210 1211 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1212 if (len == 0) 1213 goto again; /* Shouldn't happen... */ 1214 1215 r = SAB_READ(sc, SAB_RFIFO); 1216 1217 /* 1218 * Blow away everything left in the FIFO... 1219 */ 1220 sabtty_cec_wait(sc); 1221 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1222 return (r); 1223 } 1224 1225 void 1226 sabtty_cnpollc(struct sabtty_softc *sc, int on) 1227 { 1228 uint8_t r; 1229 1230 if (on) { 1231 if (sc->sc_polling) 1232 return; 1233 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1234 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1235 r &= ~(SAB_RFC_RFDF); 1236 SAB_WRITE(sc, SAB_RFC, r); 1237 sabtty_cec_wait(sc); 1238 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1239 sc->sc_polling = 1; 1240 } else { 1241 if (!sc->sc_polling) 1242 return; 1243 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1244 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1245 sabtty_cec_wait(sc); 1246 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1247 sc->sc_polling = 0; 1248 } 1249 } 1250 1251 void 1252 sab_cnputc(dev_t dev, int c) 1253 { 1254 struct sabtty_softc *sc = sabtty_cons_output; 1255 1256 if (sc == NULL) 1257 return; 1258 sabtty_cnputc(sc, c); 1259 } 1260 1261 void 1262 sab_cnpollc(dev_t dev, int on) 1263 { 1264 struct sabtty_softc *sc = sabtty_cons_input; 1265 1266 sabtty_cnpollc(sc, on); 1267 } 1268 1269 int 1270 sab_cngetc(dev_t dev) 1271 { 1272 struct sabtty_softc *sc = sabtty_cons_input; 1273 1274 if (sc == NULL) 1275 return (-1); 1276 return (sabtty_cngetc(sc)); 1277 } 1278 1279 void 1280 sabtty_console_flags(struct sabtty_softc *sc) 1281 { 1282 int node, channel, cookie; 1283 char buf[255]; 1284 1285 node = sc->sc_parent->sc_node; 1286 channel = sc->sc_portno; 1287 1288 /* Default to channel 0 if there are no explicit prom args */ 1289 cookie = 0; 1290 1291 if (node == prom_instance_to_package(prom_stdin())) { 1292 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1293 strcmp("ttyb", buf) == 0) 1294 cookie = 1; 1295 1296 if (channel == cookie) 1297 sc->sc_flags |= SABTTYF_CONS_IN; 1298 } 1299 1300 /* Default to same channel if there are no explicit prom args */ 1301 1302 if (node == prom_instance_to_package(prom_stdout())) { 1303 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1304 strcmp("ttyb", buf) == 0) 1305 cookie = 1; 1306 1307 if (channel == cookie) 1308 sc->sc_flags |= SABTTYF_CONS_OUT; 1309 } 1310 /* Are we connected to an E250 RSC? */ 1311 if (channel == prom_getpropint(node, "ssp-console", -1) || 1312 channel == prom_getpropint(node, "ssp-control", -1)) 1313 sc->sc_flags |= SABTTYF_IS_RSC; 1314 } 1315 1316 void 1317 sabtty_shutdown(void *vsc) 1318 { 1319 struct sabtty_softc *sc = vsc; 1320 1321 /* Have to put the chip back into single char mode */ 1322 sc->sc_flags |= SABTTYF_DONTDDB; 1323 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1324 sabtty_cec_wait(sc); 1325 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1326 sabtty_cec_wait(sc); 1327 } 1328 1329 #ifdef KGDB 1330 static int 1331 sab_kgdb_getc(void *arg) 1332 { 1333 struct sabtty_softc *sc = arg; 1334 1335 return sabtty_cngetc(sc); 1336 } 1337 1338 static void 1339 sab_kgdb_putc(void *arg, int c) 1340 { 1341 struct sabtty_softc *sc = arg; 1342 1343 return sabtty_cnputc(sc, c); 1344 } 1345 1346 #ifndef KGDB_DEVRATE 1347 #define KGDB_DEVRATE 9600 1348 #endif 1349 1350 int 1351 sab_kgdb_check(struct sabtty_softc *sc) 1352 { 1353 return strcmp(device_xname(sc->sc_dev), KGDB_DEVNAME) == 0; 1354 } 1355 1356 void 1357 sab_kgdb_init(struct sabtty_softc *sc) 1358 { 1359 int sp; 1360 uint8_t dafo, r; 1361 extern int kgdb_break_at_attach; 1362 1363 kgdb_attach(sab_kgdb_getc, sab_kgdb_putc, sc); 1364 kgdb_dev = 123; /* not used, but checked against NODEV */ 1365 1366 /* 1367 * Configure the port to speed/8n1 1368 */ 1369 dafo = SAB_READ(sc, SAB_DAFO); 1370 dafo &= ~(SAB_DAFO_STOP|SAB_DAFO_CHL_CSIZE|SAB_DAFO_PARMASK); 1371 dafo |= SAB_DAFO_CHL_CS8|SAB_DAFO_PAR_NONE; 1372 SAB_WRITE(sc, SAB_DAFO, dafo); 1373 sp = sabtty_speed(KGDB_DEVRATE); 1374 SAB_WRITE(sc, SAB_BGR, sp & 0xff); 1375 r = SAB_READ(sc, SAB_CCR2); 1376 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1377 r |= (sp >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1378 SAB_WRITE(sc, SAB_CCR2, r); 1379 1380 /* 1381 * If we are booting with -d, break into kgdb now 1382 */ 1383 if (kgdb_break_at_attach) 1384 kgdb_connect(1); 1385 } 1386 #endif 1387
Indexes created Thu Sep 25 16:09:42 GMT 2025