sab.c revision 1.55
1 /* $NetBSD: sab.c,v 1.55 2017/10/31 10:45:19 martin 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 1.55 2017/10/31 10:45:19 martin 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) TTUNIT(x) 75 #define SABDIALOUT(x) TTDIALOUT(x) 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 bool sabtty_shutdown(device_t, int); 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 .d_open = sabopen, 189 .d_close = sabclose, 190 .d_read = sabread, 191 .d_write = sabwrite, 192 .d_ioctl = sabioctl, 193 .d_stop = sabstop, 194 .d_tty = sabtty, 195 .d_poll = sabpoll, 196 .d_mmap = nommap, 197 .d_kqfilter = ttykqfilter, 198 .d_discard = nodiscard, 199 .d_flag = D_TTY 200 }; 201 202 struct sabtty_rate { 203 int baud; 204 int n, m; 205 }; 206 207 struct sabtty_rate sabtty_baudtable[] = { 208 { 50, 35, 10 }, 209 { 75, 47, 9 }, 210 { 110, 32, 9 }, 211 { 134, 53, 8 }, 212 { 150, 47, 8 }, 213 { 200, 35, 8 }, 214 { 300, 47, 7 }, 215 { 600, 47, 6 }, 216 { 1200, 47, 5 }, 217 { 1800, 31, 5 }, 218 { 2400, 47, 4 }, 219 { 4800, 47, 3 }, 220 { 9600, 47, 2 }, 221 { 19200, 47, 1 }, 222 { 38400, 23, 1 }, 223 { 57600, 15, 1 }, 224 { 115200, 7, 1 }, 225 { 230400, 3, 1 }, 226 { 460800, 1, 1 }, 227 { 76800, 11, 1 }, 228 { 153600, 5, 1 }, 229 { 307200, 3, 1 }, 230 { 614400, 3, 0 }, 231 { 921600, 0, 1 }, 232 }; 233 234 int 235 sab_match(device_t parent, cfdata_t match, void *aux) 236 { 237 struct ebus_attach_args *ea = aux; 238 char *compat; 239 240 if (strcmp(ea->ea_name, "se") == 0 || 241 strcmp(ea->ea_name, "FJSV,se") == 0) 242 return (1); 243 244 compat = prom_getpropstring(ea->ea_node, "compatible"); 245 if (compat != NULL && !strcmp(compat, "sab82532")) 246 return (1); 247 248 return (0); 249 } 250 251 void 252 sab_attach(device_t parent, device_t self, void *aux) 253 { 254 struct sab_softc *sc = device_private(self); 255 struct ebus_attach_args *ea = aux; 256 uint8_t r; 257 u_int i; 258 int locs[SABCF_NLOCS]; 259 260 sc->sc_dev = self; 261 sc->sc_bt = ea->ea_bustag; 262 sc->sc_node = ea->ea_node; 263 264 /* Use prom mapping, if available. */ 265 if (ea->ea_nvaddr) 266 sparc_promaddr_to_handle(sc->sc_bt, ea->ea_vaddr[0], 267 &sc->sc_bh); 268 else if (bus_space_map(sc->sc_bt, EBUS_ADDR_FROM_REG(&ea->ea_reg[0]), 269 ea->ea_reg[0].size, 0, &sc->sc_bh) != 0) { 270 printf(": can't map register space\n"); 271 return; 272 } 273 274 sc->sc_ih = bus_intr_establish(ea->ea_bustag, ea->ea_intr[0], 275 IPL_TTY, sab_intr, sc); 276 if (sc->sc_ih == NULL) { 277 printf(": can't map interrupt\n"); 278 return; 279 } 280 281 sc->sc_softintr = softint_establish(SOFTINT_SERIAL, sab_softintr, sc); 282 if (sc->sc_softintr == NULL) { 283 printf(": can't get soft intr\n"); 284 return; 285 } 286 287 aprint_normal(": rev "); 288 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_VMASK; 289 switch (r) { 290 case SAB_VSTR_V_1: 291 aprint_normal("1"); 292 break; 293 case SAB_VSTR_V_2: 294 aprint_normal("2"); 295 break; 296 case SAB_VSTR_V_32: 297 aprint_normal("3.2"); 298 break; 299 default: 300 aprint_normal("unknown(0x%x)", r); 301 break; 302 } 303 aprint_normal("\n"); 304 aprint_naive(": Serial controller\n"); 305 306 /* Let current output drain */ 307 DELAY(100000); 308 309 /* Set all pins, except DTR pins to be inputs */ 310 SAB_WRITE(sc, SAB_PCR, ~(SAB_PVR_DTR_A | SAB_PVR_DTR_B)); 311 /* Disable port interrupts */ 312 SAB_WRITE(sc, SAB_PIM, 0xff); 313 SAB_WRITE(sc, SAB_PVR, SAB_PVR_DTR_A | SAB_PVR_DTR_B | SAB_PVR_MAGIC); 314 SAB_WRITE(sc, SAB_IPC, SAB_IPC_ICPL); 315 316 for (i = 0; i < SAB_NCHAN; i++) { 317 struct sabtty_attach_args stax; 318 319 stax.sbt_portno = i; 320 321 locs[SABCF_CHANNEL] = i; 322 323 sc->sc_child[i] = device_private(config_found_sm_loc(self, 324 "sab", locs, &stax, sab_print, config_stdsubmatch)); 325 if (sc->sc_child[i] != NULL) 326 sc->sc_nchild++; 327 } 328 } 329 330 int 331 sab_print(void *args, const char *name) 332 { 333 struct sabtty_attach_args *sa = args; 334 335 if (name) 336 aprint_normal("sabtty at %s", name); 337 aprint_normal(" port %u", sa->sbt_portno); 338 return (UNCONF); 339 } 340 341 int 342 sab_intr(void *vsc) 343 { 344 struct sab_softc *sc = vsc; 345 int r = 0, needsoft = 0; 346 uint8_t gis; 347 348 gis = SAB_READ(sc, SAB_GIS); 349 350 /* channel A */ 351 if ((gis & (SAB_GIS_ISA1 | SAB_GIS_ISA0)) && sc->sc_child[0] && 352 sc->sc_child[0]->sc_tty) 353 r |= sabtty_intr(sc->sc_child[0], &needsoft); 354 355 /* channel B */ 356 if ((gis & (SAB_GIS_ISB1 | SAB_GIS_ISB0)) && sc->sc_child[1] && 357 sc->sc_child[1]->sc_tty) 358 r |= sabtty_intr(sc->sc_child[1], &needsoft); 359 360 if (needsoft) 361 softint_schedule(sc->sc_softintr); 362 363 return (r); 364 } 365 366 void 367 sab_softintr(void *vsc) 368 { 369 struct sab_softc *sc = vsc; 370 371 if (sc->sc_child[0] && sc->sc_child[0]->sc_tty) 372 sabtty_softintr(sc->sc_child[0]); 373 if (sc->sc_child[1] && sc->sc_child[1]->sc_tty) 374 sabtty_softintr(sc->sc_child[1]); 375 } 376 377 int 378 sabtty_match(device_t parent, cfdata_t match, void *aux) 379 { 380 381 return (1); 382 } 383 384 void 385 sabtty_attach(device_t parent, device_t self, void *aux) 386 { 387 struct sabtty_softc *sc = device_private(self); 388 struct sabtty_attach_args *sa = aux; 389 int r; 390 int maj; 391 int is_kgdb = 0; 392 393 sc->sc_dev = self; 394 #ifdef KGDB 395 is_kgdb = sab_kgdb_check(sc); 396 #endif 397 398 if (!is_kgdb) { 399 sc->sc_tty = tty_alloc(); 400 if (sc->sc_tty == NULL) { 401 aprint_normal(": failed to allocate tty\n"); 402 return; 403 } 404 tty_attach(sc->sc_tty); 405 sc->sc_tty->t_oproc = sabtty_start; 406 sc->sc_tty->t_param = sabtty_param; 407 } 408 409 sc->sc_parent = device_private(parent); 410 sc->sc_bt = sc->sc_parent->sc_bt; 411 sc->sc_portno = sa->sbt_portno; 412 sc->sc_rend = sc->sc_rbuf + SABTTY_RBUF_SIZE; 413 414 switch (sa->sbt_portno) { 415 case 0: /* port A */ 416 sc->sc_pvr_dtr = SAB_PVR_DTR_A; 417 sc->sc_pvr_dsr = SAB_PVR_DSR_A; 418 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 419 SAB_CHAN_A, SAB_CHANLEN, &sc->sc_bh); 420 break; 421 case 1: /* port B */ 422 sc->sc_pvr_dtr = SAB_PVR_DTR_B; 423 sc->sc_pvr_dsr = SAB_PVR_DSR_B; 424 r = bus_space_subregion(sc->sc_bt, sc->sc_parent->sc_bh, 425 SAB_CHAN_B, SAB_CHANLEN, &sc->sc_bh); 426 break; 427 default: 428 aprint_normal(": invalid channel: %u\n", sa->sbt_portno); 429 return; 430 } 431 if (r != 0) { 432 aprint_normal(": failed to allocate register subregion\n"); 433 return; 434 } 435 436 sabtty_console_flags(sc); 437 438 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 439 struct termios t; 440 const char *acc; 441 442 /* Let residual prom output drain */ 443 DELAY(100000); 444 445 switch (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 446 case SABTTYF_CONS_IN: 447 acc = "input"; 448 break; 449 case SABTTYF_CONS_OUT: 450 acc = "output"; 451 break; 452 case SABTTYF_CONS_IN|SABTTYF_CONS_OUT: 453 default: 454 acc = "i/o"; 455 break; 456 } 457 458 t.c_ispeed= 0; 459 if (sc->sc_flags & SABTTYF_IS_RSC) 460 t.c_ospeed = 115200; 461 else 462 t.c_ospeed = 9600; 463 t.c_cflag = CREAD | CS8 | HUPCL; 464 sc->sc_tty->t_ospeed = 0; 465 sabttyparam(sc, sc->sc_tty, &t); 466 467 if (sc->sc_flags & SABTTYF_CONS_IN) { 468 sabtty_cons_input = sc; 469 cn_tab->cn_pollc = sab_cnpollc; 470 cn_tab->cn_getc = sab_cngetc; 471 maj = cdevsw_lookup_major(&sabtty_cdevsw); 472 cn_tab->cn_dev = makedev(maj, device_unit(self)); 473 pmf_device_register1(self, NULL, NULL, sabtty_shutdown); 474 cn_init_magic(&sabtty_cnm_state); 475 cn_set_magic("\047\001"); /* default magic is BREAK */ 476 } 477 478 if (sc->sc_flags & SABTTYF_CONS_OUT) { 479 sabtty_tec_wait(sc); 480 sabtty_cons_output = sc; 481 cn_tab->cn_putc = sab_cnputc; 482 maj = cdevsw_lookup_major(&sabtty_cdevsw); 483 cn_tab->cn_dev = makedev(maj, device_unit(self)); 484 } 485 aprint_normal(": console %s", acc); 486 } else { 487 /* Not a console... */ 488 sabtty_reset(sc); 489 490 #ifdef KGDB 491 if (is_kgdb) { 492 sab_kgdb_init(sc); 493 aprint_normal(": kgdb"); 494 } 495 #endif 496 } 497 498 aprint_normal("\n"); 499 aprint_naive(": Serial port\n"); 500 } 501 502 int 503 sabtty_intr(struct sabtty_softc *sc, int *needsoftp) 504 { 505 uint8_t isr0, isr1; 506 int i, len = 0, needsoft = 0, r = 0, clearfifo = 0; 507 508 isr0 = SAB_READ(sc, SAB_ISR0); 509 isr1 = SAB_READ(sc, SAB_ISR1); 510 511 if (isr0 || isr1) 512 r = 1; 513 514 if (isr0 & SAB_ISR0_RPF) { 515 len = 32; 516 clearfifo = 1; 517 } 518 if (isr0 & SAB_ISR0_TCD) { 519 len = (32 - 1) & SAB_READ(sc, SAB_RBCL); 520 clearfifo = 1; 521 } 522 if (isr0 & SAB_ISR0_TIME) { 523 sabtty_cec_wait(sc); 524 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 525 } 526 if (isr0 & SAB_ISR0_RFO) { 527 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 528 clearfifo = 1; 529 } 530 if (len != 0) { 531 uint8_t *ptr, b; 532 533 ptr = sc->sc_rput; 534 for (i = 0; i < len; i++) { 535 b = SAB_READ(sc, SAB_RFIFO); 536 if (i % 2 == 0) /* skip status byte */ 537 cn_check_magic(sc->sc_tty->t_dev, 538 b, sabtty_cnm_state); 539 *ptr++ = b; 540 if (ptr == sc->sc_rend) 541 ptr = sc->sc_rbuf; 542 if (ptr == sc->sc_rget) { 543 if (ptr == sc->sc_rbuf) 544 ptr = sc->sc_rend; 545 ptr--; 546 sc->sc_flags |= SABTTYF_RINGOVERFLOW; 547 } 548 } 549 sc->sc_rput = ptr; 550 needsoft = 1; 551 } 552 553 if (clearfifo) { 554 sabtty_cec_wait(sc); 555 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 556 } 557 558 if (isr0 & SAB_ISR0_CDSC) { 559 sc->sc_flags |= SABTTYF_CDCHG; 560 needsoft = 1; 561 } 562 563 if (isr1 & SAB_ISR1_BRKT) 564 cn_check_magic(sc->sc_tty->t_dev, 565 CNC_BREAK, sabtty_cnm_state); 566 567 if (isr1 & (SAB_ISR1_XPR | SAB_ISR1_ALLS)) { 568 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_XFW) && 569 (sc->sc_flags & SABTTYF_STOP) == 0) { 570 if (sc->sc_txc < 32) 571 len = sc->sc_txc; 572 else 573 len = 32; 574 575 if (len > 0) { 576 SAB_WRITE_BLOCK(sc, SAB_XFIFO, sc->sc_txp, len); 577 sc->sc_txp += len; 578 sc->sc_txc -= len; 579 580 sabtty_cec_wait(sc); 581 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XF); 582 583 /* 584 * Prevent the false end of xmit from 585 * confusing things below. 586 */ 587 isr1 &= ~SAB_ISR1_ALLS; 588 } 589 } 590 591 if ((sc->sc_txc == 0) || (sc->sc_flags & SABTTYF_STOP)) { 592 if ((sc->sc_imr1 & SAB_IMR1_XPR) == 0) { 593 sc->sc_imr1 |= SAB_IMR1_XPR; 594 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 595 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 596 } 597 } 598 } 599 600 if ((isr1 & SAB_ISR1_ALLS) && ((sc->sc_txc == 0) || 601 (sc->sc_flags & SABTTYF_STOP))) { 602 if (sc->sc_flags & SABTTYF_TXDRAIN) 603 wakeup(sc); 604 sc->sc_flags &= ~SABTTYF_STOP; 605 sc->sc_flags |= SABTTYF_DONE; 606 sc->sc_imr1 |= SAB_IMR1_ALLS; 607 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 608 needsoft = 1; 609 } 610 611 if (needsoft) 612 *needsoftp = needsoft; 613 return (r); 614 } 615 616 void 617 sabtty_softintr(struct sabtty_softc *sc) 618 { 619 struct tty *tp = sc->sc_tty; 620 int s, flags; 621 uint8_t r; 622 623 if (tp == NULL) 624 return; 625 626 if ((tp->t_state & TS_ISOPEN) == 0) 627 return; 628 629 while (sc->sc_rget != sc->sc_rput) { 630 int data; 631 uint8_t stat; 632 633 data = sc->sc_rget[0]; 634 stat = sc->sc_rget[1]; 635 sc->sc_rget += 2; 636 if (stat & SAB_RSTAT_PE) 637 data |= TTY_PE; 638 if (stat & SAB_RSTAT_FE) 639 data |= TTY_FE; 640 if (sc->sc_rget == sc->sc_rend) 641 sc->sc_rget = sc->sc_rbuf; 642 643 (*tp->t_linesw->l_rint)(data, tp); 644 } 645 646 s = splhigh(); 647 flags = sc->sc_flags; 648 sc->sc_flags &= ~(SABTTYF_DONE|SABTTYF_CDCHG|SABTTYF_RINGOVERFLOW); 649 splx(s); 650 651 if (flags & SABTTYF_CDCHG) { 652 s = spltty(); 653 r = SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD; 654 splx(s); 655 656 (*tp->t_linesw->l_modem)(tp, r); 657 } 658 659 if (flags & SABTTYF_RINGOVERFLOW) 660 log(LOG_WARNING, "%s: ring overflow\n", 661 device_xname(sc->sc_dev)); 662 663 if (flags & SABTTYF_DONE) { 664 ndflush(&tp->t_outq, sc->sc_txp - tp->t_outq.c_cf); 665 tp->t_state &= ~TS_BUSY; 666 (*tp->t_linesw->l_start)(tp); 667 } 668 } 669 670 int 671 sabopen(dev_t dev, int flags, int mode, struct lwp *l) 672 { 673 struct sabtty_softc *sc; 674 struct tty *tp; 675 int s, s1; 676 677 sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 678 if (sc == NULL) 679 return (ENXIO); 680 681 tp = sc->sc_tty; 682 tp->t_dev = dev; 683 684 /* 685 * If the device is exclusively for kernel use, deny userland 686 * open. 687 */ 688 if (ISSET(tp->t_state, TS_KERN_ONLY)) 689 return (EBUSY); 690 691 if (kauth_authorize_device_tty(l->l_cred, KAUTH_DEVICE_TTY_OPEN, tp)) 692 return (EBUSY); 693 694 mutex_spin_enter(&tty_lock); 695 if (!ISSET(tp->t_state, TS_ISOPEN) && tp->t_wopen == 0) { 696 ttychars(tp); 697 tp->t_iflag = TTYDEF_IFLAG; 698 tp->t_oflag = TTYDEF_OFLAG; 699 tp->t_cflag = TTYDEF_CFLAG; 700 if (sc->sc_openflags & TIOCFLAG_CLOCAL) 701 tp->t_cflag |= CLOCAL; 702 if (sc->sc_openflags & TIOCFLAG_CRTSCTS) 703 tp->t_cflag |= CRTSCTS; 704 if (sc->sc_openflags & TIOCFLAG_MDMBUF) 705 tp->t_cflag |= MDMBUF; 706 tp->t_lflag = TTYDEF_LFLAG; 707 tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED; 708 709 sc->sc_rput = sc->sc_rget = sc->sc_rbuf; 710 711 ttsetwater(tp); 712 713 s1 = splhigh(); 714 sabtty_reset(sc); 715 sabtty_param(tp, &tp->t_termios); 716 sc->sc_imr0 = SAB_IMR0_PERR | SAB_IMR0_FERR | SAB_IMR0_PLLA; 717 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 718 sc->sc_imr1 = SAB_IMR1_BRK | SAB_IMR1_ALLS | SAB_IMR1_XDU | 719 SAB_IMR1_TIN | SAB_IMR1_CSC | SAB_IMR1_XMR | SAB_IMR1_XPR; 720 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 721 SAB_WRITE(sc, SAB_CCR0, SAB_READ(sc, SAB_CCR0) | SAB_CCR0_PU); 722 sabtty_cec_wait(sc); 723 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 724 sabtty_cec_wait(sc); 725 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 726 sabtty_cec_wait(sc); 727 splx(s1); 728 729 sabtty_flush(sc); 730 731 if ((sc->sc_openflags & TIOCFLAG_SOFTCAR) || 732 (SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD)) 733 tp->t_state |= TS_CARR_ON; 734 else 735 tp->t_state &= ~TS_CARR_ON; 736 } 737 738 if ((flags & O_NONBLOCK) == 0) { 739 while ((tp->t_cflag & CLOCAL) == 0 && 740 (tp->t_state & TS_CARR_ON) == 0) { 741 int error; 742 743 error = ttysleep(tp, &tp->t_rawcv, true, 0); 744 if (error != 0) { 745 mutex_spin_exit(&tty_lock); 746 return (error); 747 } 748 } 749 } 750 751 mutex_spin_exit(&tty_lock); 752 753 s = (*tp->t_linesw->l_open)(dev, tp); 754 if (s != 0) { 755 mutex_spin_enter(&tty_lock); 756 if (tp->t_state & TS_ISOPEN) { 757 mutex_spin_exit(&tty_lock); 758 return (s); 759 } 760 if (tp->t_cflag & HUPCL) { 761 sabtty_mdmctrl(sc, 0, DMSET); 762 cv_wait(&lbolt, &tty_lock); 763 } 764 765 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 766 /* Flush and power down if we're not the console */ 767 sabtty_flush(sc); 768 sabtty_reset(sc); 769 } 770 mutex_spin_exit(&tty_lock); 771 } 772 return (s); 773 } 774 775 int 776 sabclose(dev_t dev, int flags, int mode, struct lwp *l) 777 { 778 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 779 struct sab_softc *bc = sc->sc_parent; 780 struct tty *tp = sc->sc_tty; 781 int s; 782 783 (*tp->t_linesw->l_close)(tp, flags); 784 785 s = spltty(); 786 787 if ((tp->t_state & TS_ISOPEN) == 0) { 788 /* Wait for output drain */ 789 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 790 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 791 sc->sc_flags |= SABTTYF_TXDRAIN; 792 (void)tsleep(sc, TTIPRI, ttclos, 5 * hz); 793 sc->sc_imr1 |= SAB_IMR1_ALLS; 794 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 795 sc->sc_flags &= ~SABTTYF_TXDRAIN; 796 797 if (tp->t_cflag & HUPCL) { 798 sabtty_mdmctrl(sc, 0, DMSET); 799 (void)tsleep(bc, TTIPRI, ttclos, hz); 800 } 801 802 if ((sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) == 0) { 803 /* Flush and power down if we're not the console */ 804 sabtty_flush(sc); 805 sabtty_reset(sc); 806 } 807 } 808 809 ttyclose(tp); 810 splx(s); 811 812 return (0); 813 } 814 815 int 816 sabread(dev_t dev, struct uio *uio, int flags) 817 { 818 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 819 struct tty *tp = sc->sc_tty; 820 821 return ((*tp->t_linesw->l_read)(tp, uio, flags)); 822 } 823 824 int 825 sabwrite(dev_t dev, struct uio *uio, int flags) 826 { 827 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 828 struct tty *tp = sc->sc_tty; 829 830 return ((*tp->t_linesw->l_write)(tp, uio, flags)); 831 } 832 833 int 834 sabioctl(dev_t dev, u_long cmd, void *data, int flags, struct lwp *l) 835 { 836 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 837 struct tty *tp = sc->sc_tty; 838 int error; 839 840 error = (*tp->t_linesw->l_ioctl)(tp, cmd, data, flags, l); 841 if (error >= 0) 842 return (error); 843 844 error = ttioctl(tp, cmd, data, flags, l); 845 if (error >= 0) 846 return (error); 847 848 error = 0; 849 850 switch (cmd) { 851 case TIOCSBRK: 852 SAB_WRITE(sc, SAB_DAFO, 853 SAB_READ(sc, SAB_DAFO) | SAB_DAFO_XBRK); 854 break; 855 case TIOCCBRK: 856 SAB_WRITE(sc, SAB_DAFO, 857 SAB_READ(sc, SAB_DAFO) & ~SAB_DAFO_XBRK); 858 break; 859 case TIOCSDTR: 860 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIS); 861 break; 862 case TIOCCDTR: 863 sabtty_mdmctrl(sc, TIOCM_DTR, DMBIC); 864 break; 865 case TIOCMBIS: 866 sabtty_mdmctrl(sc, *((int *)data), DMBIS); 867 break; 868 case TIOCMBIC: 869 sabtty_mdmctrl(sc, *((int *)data), DMBIC); 870 break; 871 case TIOCMGET: 872 *((int *)data) = sabtty_mdmctrl(sc, 0, DMGET); 873 break; 874 case TIOCMSET: 875 sabtty_mdmctrl(sc, *((int *)data), DMSET); 876 break; 877 case TIOCGFLAGS: 878 *((int *)data) = sc->sc_openflags; 879 break; 880 case TIOCSFLAGS: 881 if (kauth_authorize_device_tty(l->l_cred, 882 KAUTH_DEVICE_TTY_PRIVSET, tp)) 883 error = EPERM; 884 else 885 sc->sc_openflags = *((int *)data) & 886 (TIOCFLAG_SOFTCAR | TIOCFLAG_CLOCAL | 887 TIOCFLAG_CRTSCTS | TIOCFLAG_MDMBUF); 888 break; 889 default: 890 error = ENOTTY; 891 } 892 893 return (error); 894 } 895 896 struct tty * 897 sabtty(dev_t dev) 898 { 899 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 900 901 return (sc->sc_tty); 902 } 903 904 void 905 sabstop(struct tty *tp, int flag) 906 { 907 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 908 int s; 909 910 s = spltty(); 911 if (tp->t_state & TS_BUSY) { 912 if ((tp->t_state & TS_TTSTOP) == 0) 913 tp->t_state |= TS_FLUSH; 914 sc->sc_flags |= SABTTYF_STOP; 915 sc->sc_imr1 &= ~SAB_IMR1_ALLS; 916 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 917 } 918 splx(s); 919 } 920 921 int 922 sabpoll(dev_t dev, int events, struct lwp *l) 923 { 924 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(dev)); 925 struct tty *tp = sc->sc_tty; 926 927 return ((*tp->t_linesw->l_poll)(tp, events, l)); 928 } 929 930 int 931 sabtty_mdmctrl(struct sabtty_softc *sc, int bits, int how) 932 { 933 uint8_t r; 934 int s; 935 936 s = spltty(); 937 switch (how) { 938 case DMGET: 939 bits = 0; 940 if (SAB_READ(sc, SAB_STAR) & SAB_STAR_CTS) 941 bits |= TIOCM_CTS; 942 if ((SAB_READ(sc, SAB_VSTR) & SAB_VSTR_CD) == 0) 943 bits |= TIOCM_CD; 944 945 r = SAB_READ(sc, SAB_PVR); 946 if ((r & sc->sc_pvr_dtr) == 0) 947 bits |= TIOCM_DTR; 948 if ((r & sc->sc_pvr_dsr) == 0) 949 bits |= TIOCM_DSR; 950 951 r = SAB_READ(sc, SAB_MODE); 952 if ((r & (SAB_MODE_RTS|SAB_MODE_FRTS)) == SAB_MODE_RTS) 953 bits |= TIOCM_RTS; 954 break; 955 case DMSET: 956 r = SAB_READ(sc, SAB_MODE); 957 if (bits & TIOCM_RTS) { 958 r &= ~SAB_MODE_FRTS; 959 r |= SAB_MODE_RTS; 960 } else 961 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 962 SAB_WRITE(sc, SAB_MODE, r); 963 964 r = SAB_READ(sc, SAB_PVR); 965 if (bits & TIOCM_DTR) 966 r &= ~sc->sc_pvr_dtr; 967 else 968 r |= sc->sc_pvr_dtr; 969 SAB_WRITE(sc, SAB_PVR, r); 970 break; 971 case DMBIS: 972 if (bits & TIOCM_RTS) { 973 r = SAB_READ(sc, SAB_MODE); 974 r &= ~SAB_MODE_FRTS; 975 r |= SAB_MODE_RTS; 976 SAB_WRITE(sc, SAB_MODE, r); 977 } 978 if (bits & TIOCM_DTR) { 979 r = SAB_READ(sc, SAB_PVR); 980 r &= ~sc->sc_pvr_dtr; 981 SAB_WRITE(sc, SAB_PVR, r); 982 } 983 break; 984 case DMBIC: 985 if (bits & TIOCM_RTS) { 986 r = SAB_READ(sc, SAB_MODE); 987 r |= SAB_MODE_FRTS | SAB_MODE_RTS; 988 SAB_WRITE(sc, SAB_MODE, r); 989 } 990 if (bits & TIOCM_DTR) { 991 r = SAB_READ(sc, SAB_PVR); 992 r |= sc->sc_pvr_dtr; 993 SAB_WRITE(sc, SAB_PVR, r); 994 } 995 break; 996 } 997 splx(s); 998 return (bits); 999 } 1000 1001 int 1002 sabttyparam(struct sabtty_softc *sc, struct tty *tp, struct termios *t) 1003 { 1004 int s, ospeed; 1005 tcflag_t cflag; 1006 uint8_t dafo, r; 1007 1008 ospeed = sabtty_speed(t->c_ospeed); 1009 if (ospeed < 0 || (t->c_ispeed && t->c_ispeed != t->c_ospeed)) 1010 return (EINVAL); 1011 1012 s = spltty(); 1013 1014 /* hang up line if ospeed is zero, otherwise raise dtr */ 1015 sabtty_mdmctrl(sc, TIOCM_DTR, 1016 (t->c_ospeed == 0) ? DMBIC : DMBIS); 1017 1018 dafo = SAB_READ(sc, SAB_DAFO); 1019 1020 cflag = t->c_cflag; 1021 1022 if (sc->sc_flags & (SABTTYF_CONS_IN | SABTTYF_CONS_OUT)) { 1023 cflag |= CLOCAL; 1024 cflag &= ~HUPCL; 1025 } 1026 1027 if (cflag & CSTOPB) 1028 dafo |= SAB_DAFO_STOP; 1029 else 1030 dafo &= ~SAB_DAFO_STOP; 1031 1032 dafo &= ~SAB_DAFO_CHL_CSIZE; 1033 switch (cflag & CSIZE) { 1034 case CS5: 1035 dafo |= SAB_DAFO_CHL_CS5; 1036 break; 1037 case CS6: 1038 dafo |= SAB_DAFO_CHL_CS6; 1039 break; 1040 case CS7: 1041 dafo |= SAB_DAFO_CHL_CS7; 1042 break; 1043 default: 1044 dafo |= SAB_DAFO_CHL_CS8; 1045 break; 1046 } 1047 1048 dafo &= ~SAB_DAFO_PARMASK; 1049 if (cflag & PARENB) { 1050 if (cflag & PARODD) 1051 dafo |= SAB_DAFO_PAR_ODD; 1052 else 1053 dafo |= SAB_DAFO_PAR_EVEN; 1054 } else 1055 dafo |= SAB_DAFO_PAR_NONE; 1056 SAB_WRITE(sc, SAB_DAFO, dafo); 1057 1058 if (!(sc->sc_flags & SABTTYF_IS_RSC) && ospeed != 0) { 1059 SAB_WRITE(sc, SAB_BGR, ospeed & 0xff); 1060 r = SAB_READ(sc, SAB_CCR2); 1061 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1062 r |= (ospeed >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1063 SAB_WRITE(sc, SAB_CCR2, r); 1064 } 1065 1066 r = SAB_READ(sc, SAB_MODE); 1067 r |= SAB_MODE_RAC; 1068 if (cflag & CRTSCTS) { 1069 r &= ~(SAB_MODE_RTS | SAB_MODE_FCTS); 1070 r |= SAB_MODE_FRTS; 1071 sc->sc_imr1 &= ~SAB_IMR1_CSC; 1072 } else { 1073 r |= SAB_MODE_RTS | SAB_MODE_FCTS; 1074 r &= ~SAB_MODE_FRTS; 1075 sc->sc_imr1 |= SAB_IMR1_CSC; 1076 } 1077 SAB_WRITE(sc, SAB_MODE, r); 1078 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1079 1080 tp->t_cflag = cflag; 1081 1082 splx(s); 1083 return (0); 1084 } 1085 1086 int 1087 sabtty_param(struct tty *tp, struct termios *t) 1088 { 1089 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 1090 1091 return (sabttyparam(sc, tp, t)); 1092 } 1093 1094 void 1095 sabtty_start(struct tty *tp) 1096 { 1097 struct sabtty_softc *sc = device_lookup_private(&sabtty_cd, SABUNIT(tp->t_dev)); 1098 int s; 1099 1100 s = spltty(); 1101 if ((tp->t_state & (TS_TTSTOP | TS_TIMEOUT | TS_BUSY)) == 0) { 1102 if (ttypull(tp)) { 1103 sc->sc_txc = ndqb(&tp->t_outq, 0); 1104 sc->sc_txp = tp->t_outq.c_cf; 1105 tp->t_state |= TS_BUSY; 1106 sc->sc_imr1 &= ~(SAB_ISR1_XPR | SAB_ISR1_ALLS); 1107 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1108 } 1109 } 1110 splx(s); 1111 } 1112 1113 void 1114 sabtty_cec_wait(struct sabtty_softc *sc) 1115 { 1116 int i = 50000; 1117 1118 for (;;) { 1119 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_CEC) == 0) 1120 return; 1121 if (--i == 0) 1122 break; 1123 DELAY(1); 1124 } 1125 } 1126 1127 void 1128 sabtty_tec_wait(struct sabtty_softc *sc) 1129 { 1130 int i = 200000; 1131 1132 for (;;) { 1133 if ((SAB_READ(sc, SAB_STAR) & SAB_STAR_TEC) == 0) 1134 return; 1135 if (--i == 0) 1136 break; 1137 DELAY(1); 1138 } 1139 } 1140 1141 void 1142 sabtty_reset(struct sabtty_softc *sc) 1143 { 1144 /* power down */ 1145 SAB_WRITE(sc, SAB_CCR0, 0); 1146 1147 /* set basic configuration */ 1148 SAB_WRITE(sc, SAB_CCR0, 1149 SAB_CCR0_MCE | SAB_CCR0_SC_NRZ | SAB_CCR0_SM_ASYNC); 1150 SAB_WRITE(sc, SAB_CCR1, SAB_CCR1_ODS | SAB_CCR1_BCR | SAB_CCR1_CM_7); 1151 SAB_WRITE(sc, SAB_CCR2, SAB_CCR2_BDF | SAB_CCR2_SSEL | SAB_CCR2_TOE); 1152 SAB_WRITE(sc, SAB_CCR3, 0); 1153 SAB_WRITE(sc, SAB_CCR4, SAB_CCR4_MCK4 | SAB_CCR4_EBRG | SAB_CCR4_ICD); 1154 SAB_WRITE(sc, SAB_MODE, SAB_MODE_RTS | SAB_MODE_FCTS | SAB_MODE_RAC); 1155 SAB_WRITE(sc, SAB_RFC, 1156 SAB_RFC_DPS | SAB_RFC_RFDF | SAB_RFC_RFTH_32CHAR); 1157 1158 /* clear interrupts */ 1159 sc->sc_imr0 = sc->sc_imr1 = 0xff; 1160 SAB_WRITE(sc, SAB_IMR0, sc->sc_imr0); 1161 SAB_WRITE(sc, SAB_IMR1, sc->sc_imr1); 1162 (void)SAB_READ(sc, SAB_ISR0); 1163 (void)SAB_READ(sc, SAB_ISR1); 1164 } 1165 1166 void 1167 sabtty_flush(struct sabtty_softc *sc) 1168 { 1169 /* clear rx fifo */ 1170 sabtty_cec_wait(sc); 1171 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1172 1173 /* clear tx fifo */ 1174 sabtty_cec_wait(sc); 1175 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_XRES); 1176 } 1177 1178 int 1179 sabtty_speed(int rate) 1180 { 1181 int i, len, r; 1182 1183 if (rate == 0) 1184 return (0); 1185 len = sizeof(sabtty_baudtable)/sizeof(sabtty_baudtable[0]); 1186 for (i = 0; i < len; i++) { 1187 if (rate == sabtty_baudtable[i].baud) { 1188 r = sabtty_baudtable[i].n | 1189 (sabtty_baudtable[i].m << 6); 1190 return (r); 1191 } 1192 } 1193 return (-1); 1194 } 1195 1196 void 1197 sabtty_cnputc(struct sabtty_softc *sc, int c) 1198 { 1199 sabtty_tec_wait(sc); 1200 SAB_WRITE(sc, SAB_TIC, c); 1201 sabtty_tec_wait(sc); 1202 } 1203 1204 int 1205 sabtty_cngetc(struct sabtty_softc *sc) 1206 { 1207 uint8_t r, len; 1208 1209 again: 1210 do { 1211 r = SAB_READ(sc, SAB_STAR); 1212 } while ((r & SAB_STAR_RFNE) == 0); 1213 1214 /* 1215 * Ok, at least one byte in RFIFO, ask for permission to access RFIFO 1216 * (I hate this chip... hate hate hate). 1217 */ 1218 sabtty_cec_wait(sc); 1219 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RFRD); 1220 1221 /* Wait for RFIFO to come ready */ 1222 do { 1223 r = SAB_READ(sc, SAB_ISR0); 1224 } while ((r & SAB_ISR0_TCD) == 0); 1225 1226 len = SAB_READ(sc, SAB_RBCL) & (32 - 1); 1227 if (len == 0) 1228 goto again; /* Shouldn't happen... */ 1229 1230 r = SAB_READ(sc, SAB_RFIFO); 1231 1232 /* 1233 * Blow away everything left in the FIFO... 1234 */ 1235 sabtty_cec_wait(sc); 1236 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RMC); 1237 return (r); 1238 } 1239 1240 void 1241 sabtty_cnpollc(struct sabtty_softc *sc, int on) 1242 { 1243 uint8_t r; 1244 1245 if (on) { 1246 if (sc->sc_polling) 1247 return; 1248 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) | SAB_IPC_VIS); 1249 r = sc->sc_pollrfc = SAB_READ(sc, SAB_RFC); 1250 r &= ~(SAB_RFC_RFDF); 1251 SAB_WRITE(sc, SAB_RFC, r); 1252 sabtty_cec_wait(sc); 1253 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1254 sc->sc_polling = 1; 1255 } else { 1256 if (!sc->sc_polling) 1257 return; 1258 SAB_WRITE(sc, SAB_IPC, SAB_READ(sc, SAB_IPC) & ~SAB_IPC_VIS); 1259 SAB_WRITE(sc, SAB_RFC, sc->sc_pollrfc); 1260 sabtty_cec_wait(sc); 1261 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1262 sc->sc_polling = 0; 1263 } 1264 } 1265 1266 void 1267 sab_cnputc(dev_t dev, int c) 1268 { 1269 struct sabtty_softc *sc = sabtty_cons_output; 1270 1271 if (sc == NULL) 1272 return; 1273 sabtty_cnputc(sc, c); 1274 } 1275 1276 void 1277 sab_cnpollc(dev_t dev, int on) 1278 { 1279 struct sabtty_softc *sc = sabtty_cons_input; 1280 1281 sabtty_cnpollc(sc, on); 1282 } 1283 1284 int 1285 sab_cngetc(dev_t dev) 1286 { 1287 struct sabtty_softc *sc = sabtty_cons_input; 1288 1289 if (sc == NULL) 1290 return (-1); 1291 return (sabtty_cngetc(sc)); 1292 } 1293 1294 void 1295 sabtty_console_flags(struct sabtty_softc *sc) 1296 { 1297 int node, channel, cookie; 1298 char buf[255]; 1299 1300 node = sc->sc_parent->sc_node; 1301 channel = sc->sc_portno; 1302 1303 /* Default to channel 0 if there are no explicit prom args */ 1304 cookie = 0; 1305 1306 if (node == prom_instance_to_package(prom_stdin())) { 1307 if (prom_getoption("input-device", buf, sizeof buf) == 0 && 1308 strcmp("ttyb", buf) == 0) 1309 cookie = 1; 1310 1311 if (channel == cookie) 1312 sc->sc_flags |= SABTTYF_CONS_IN; 1313 } 1314 1315 /* Default to same channel if there are no explicit prom args */ 1316 1317 if (node == prom_instance_to_package(prom_stdout())) { 1318 if (prom_getoption("output-device", buf, sizeof buf) == 0 && 1319 strcmp("ttyb", buf) == 0) 1320 cookie = 1; 1321 1322 if (channel == cookie) 1323 sc->sc_flags |= SABTTYF_CONS_OUT; 1324 } 1325 /* Are we connected to an E250 RSC? */ 1326 if (channel == prom_getpropint(node, "ssp-console", -1) || 1327 channel == prom_getpropint(node, "ssp-control", -1)) 1328 sc->sc_flags |= SABTTYF_IS_RSC; 1329 } 1330 1331 bool 1332 sabtty_shutdown(device_t dev, int how) 1333 { 1334 struct sabtty_softc *sc = device_private(dev); 1335 1336 /* Have to put the chip back into single char mode */ 1337 sc->sc_flags |= SABTTYF_DONTDDB; 1338 SAB_WRITE(sc, SAB_RFC, SAB_READ(sc, SAB_RFC) & ~SAB_RFC_RFDF); 1339 sabtty_cec_wait(sc); 1340 SAB_WRITE(sc, SAB_CMDR, SAB_CMDR_RRES); 1341 sabtty_cec_wait(sc); 1342 return true; 1343 } 1344 1345 #ifdef KGDB 1346 static int 1347 sab_kgdb_getc(void *arg) 1348 { 1349 struct sabtty_softc *sc = arg; 1350 1351 return sabtty_cngetc(sc); 1352 } 1353 1354 static void 1355 sab_kgdb_putc(void *arg, int c) 1356 { 1357 struct sabtty_softc *sc = arg; 1358 1359 return sabtty_cnputc(sc, c); 1360 } 1361 1362 #ifndef KGDB_DEVRATE 1363 #define KGDB_DEVRATE 9600 1364 #endif 1365 1366 int 1367 sab_kgdb_check(struct sabtty_softc *sc) 1368 { 1369 return strcmp(device_xname(sc->sc_dev), KGDB_DEVNAME) == 0; 1370 } 1371 1372 void 1373 sab_kgdb_init(struct sabtty_softc *sc) 1374 { 1375 int sp; 1376 uint8_t dafo, r; 1377 extern int kgdb_break_at_attach; 1378 1379 kgdb_attach(sab_kgdb_getc, sab_kgdb_putc, sc); 1380 kgdb_dev = 123; /* not used, but checked against NODEV */ 1381 1382 /* 1383 * Configure the port to speed/8n1 1384 */ 1385 dafo = SAB_READ(sc, SAB_DAFO); 1386 dafo &= ~(SAB_DAFO_STOP|SAB_DAFO_CHL_CSIZE|SAB_DAFO_PARMASK); 1387 dafo |= SAB_DAFO_CHL_CS8|SAB_DAFO_PAR_NONE; 1388 SAB_WRITE(sc, SAB_DAFO, dafo); 1389 sp = sabtty_speed(KGDB_DEVRATE); 1390 SAB_WRITE(sc, SAB_BGR, sp & 0xff); 1391 r = SAB_READ(sc, SAB_CCR2); 1392 r &= ~(SAB_CCR2_BR9 | SAB_CCR2_BR8); 1393 r |= (sp >> 2) & (SAB_CCR2_BR9 | SAB_CCR2_BR8); 1394 SAB_WRITE(sc, SAB_CCR2, r); 1395 1396 /* 1397 * If we are booting with -d, break into kgdb now 1398 */ 1399 if (kgdb_break_at_attach) 1400 kgdb_connect(1); 1401 } 1402 #endif 1403
Indexes created Thu Sep 25 16:09:42 GMT 2025