1 /* 2 * Copyright (C) 2003 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 18 * 4. Neither the name of the author nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $Id: dconschat.c,v 1.76 2003/10/23 06:21:13 simokawa Exp $ 35 * $FreeBSD$ 36 */ 37 38 #include <sys/param.h> 39 #include <sys/types.h> 40 #include <sys/uio.h> 41 #include <unistd.h> 42 #include <fcntl.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <termios.h> 46 #include <dev/dcons/dcons.h> 47 48 #include <sys/socket.h> 49 #include <netinet/in.h> 50 #include <netdb.h> 51 #include <err.h> 52 #include <string.h> 53 #include <sys/eui64.h> 54 #include <sys/event.h> 55 #include <sys/time.h> 56 #include <arpa/telnet.h> 57 58 #include <sys/ioccom.h> 59 #include <dev/firewire/firewire.h> 60 #include <dev/firewire/iec13213.h> 61 62 #include <kvm.h> 63 #include <nlist.h> 64 65 #include <sys/errno.h> 66 67 #define DCONS_POLL_HZ 100 68 #define DCONS_POLL_OFFLINE 2 /* sec */ 69 70 #define RETRY 3 71 72 #ifdef CSRVAL_VENDOR_PRIVATE 73 #define USE_CROM 1 74 #else 75 #define USE_CROM 0 76 #endif 77 78 int verbose = 0; 79 int tc_set = 0; 80 int poll_hz = DCONS_POLL_HZ; 81 82 #define IS_CONSOLE(p) ((p)->port == 0) 83 #define IS_GDB(p) ((p)->port == 1) 84 85 static struct dcons_state { 86 int fd; 87 kvm_t *kd; 88 int kq; 89 off_t paddr; 90 #define F_READY (1 << 1) 91 #define F_RD_ONLY (1 << 2) 92 #define F_ALT_BREAK (1 << 3) 93 #define F_TELNET (1 << 4) 94 #define F_USE_CROM (1 << 5) 95 #define F_ONE_SHOT (1 << 6) 96 #define F_REPLAY (1 << 7) 97 int flags; 98 enum { 99 TYPE_KVM, 100 TYPE_FW 101 } type; 102 int escape_state; 103 struct dcons_port { 104 int port; 105 struct dcons_ch o; 106 struct dcons_ch i; 107 u_int32_t optr; 108 u_int32_t iptr; 109 int s; 110 int infd; 111 int outfd; 112 struct addrinfo *res; 113 int skip_read; 114 } port[DCONS_NPORT]; 115 struct timespec to; 116 struct timespec zero; 117 struct termios tsave; 118 } sc; 119 120 static int 121 dread(struct dcons_state *dc, void *buf, size_t n, off_t offset) 122 { 123 switch (dc->type) { 124 case TYPE_FW: 125 return (pread(dc->fd, buf, n, offset)); 126 case TYPE_KVM: 127 return (kvm_read(dc->kd, offset, buf, n)); 128 } 129 return (-1); 130 } 131 132 static int 133 dwrite(struct dcons_state *dc, void *buf, size_t n, off_t offset) 134 { 135 if ((dc->flags & F_RD_ONLY) != 0) 136 return (n); 137 138 switch (dc->type) { 139 case TYPE_FW: 140 return (pwrite(dc->fd, buf, n, offset)); 141 case TYPE_KVM: 142 return (kvm_write(dc->kd, offset, buf, n)); 143 } 144 return (-1); 145 } 146 147 static void 148 dconschat_cleanup(int sig) 149 { 150 struct dcons_state *dc; 151 152 dc = ≻ 153 if (tc_set != 0) 154 tcsetattr(STDIN_FILENO, TCSADRAIN, &dc->tsave); 155 156 if (sig > 0) 157 printf("\n[dconschat exiting with signal %d ...]\n", sig); 158 else 159 printf("\n[dconschat exiting...]\n"); 160 exit(0); 161 } 162 163 #if USE_CROM 164 static int 165 dconschat_get_crom(struct dcons_state *dc) 166 { 167 off_t addr; 168 int i, state = 0; 169 u_int32_t buf, hi = 0, lo = 0; 170 struct csrreg *reg; 171 172 reg = (struct csrreg *)&buf; 173 addr = 0xffff; 174 addr = (addr << 32) | 0xf0000400; 175 for (i = 20; i < 0x400; i += 4) { 176 if (dread(dc, &buf, 4, addr + i) < 0) { 177 if (verbose) 178 warn("crom read faild"); 179 return (-1); 180 } 181 buf = ntohl(buf); 182 if (verbose) 183 printf("%d %02x %06x\n", state, reg->key, reg->val); 184 switch (state) { 185 case 0: 186 if (reg->key == CSRKEY_SPEC && 187 reg->val == CSRVAL_VENDOR_PRIVATE) 188 state = 1; 189 break; 190 case 1: 191 if (reg->key == CSRKEY_VER && 192 reg->val == DCONS_CSR_VAL_VER) 193 state = 2; 194 break; 195 case 2: 196 if (reg->key == DCONS_CSR_KEY_HI) 197 hi = reg->val; 198 else if (reg->key == DCONS_CSR_KEY_LO) { 199 lo = reg->val; 200 goto out; 201 } 202 break; 203 } 204 } 205 /* not found */ 206 return (-1); 207 out: 208 if (verbose) 209 printf("addr: %06x %06x\n", hi, lo); 210 dc->paddr = ((off_t)hi << 24) | lo; 211 return (0); 212 } 213 #endif 214 215 static void 216 dconschat_ready(struct dcons_state *dc, int ready, char *reason) 217 { 218 static char oldreason[64] = ""; 219 int old; 220 221 old = (dc->flags & F_READY) ? 1 : 0; 222 223 if (ready) { 224 dc->flags |= F_READY; 225 if (ready != old) 226 printf("[dcons connected]\r\n"); 227 oldreason[0] = 0; 228 } else { 229 dc->flags &= ~F_READY; 230 if (strncmp(oldreason, reason, sizeof(oldreason)) != 0) { 231 printf("[dcons disconnected (%s)]\r\n", reason); 232 strlcpy(oldreason, reason, sizeof(oldreason)); 233 } 234 } 235 } 236 237 static int 238 dconschat_fetch_header(struct dcons_state *dc) 239 { 240 char ebuf[64]; 241 struct dcons_buf dbuf; 242 int j; 243 244 #if USE_CROM 245 if (dc->paddr == 0 && (dc->flags & F_USE_CROM) != 0) { 246 if (dconschat_get_crom(dc)) { 247 dconschat_ready(dc, 0, "get crom failed"); 248 return (-1); 249 } 250 } 251 #endif 252 253 if (dread(dc, &dbuf, DCONS_HEADER_SIZE, dc->paddr) < 0) { 254 dconschat_ready(dc, 0, "read header failed"); 255 return (-1); 256 } 257 if (dbuf.magic != htonl(DCONS_MAGIC)) { 258 if ((dc->flags & F_USE_CROM) !=0) 259 dc->paddr = 0; 260 snprintf(ebuf, sizeof(ebuf), "wrong magic 0x%08x", dbuf.magic); 261 dconschat_ready(dc, 0, ebuf); 262 return (-1); 263 } 264 if (ntohl(dbuf.version) != DCONS_VERSION) { 265 snprintf(ebuf, sizeof(ebuf), 266 #if __FreeBSD_version < 500000 267 "wrong version %ld,%d", 268 #else 269 "wrong version %d,%d", 270 #endif 271 ntohl(dbuf.version), DCONS_VERSION); 272 /* XXX exit? */ 273 dconschat_ready(dc, 0, ebuf); 274 return (-1); 275 } 276 277 for (j = 0; j < DCONS_NPORT; j++) { 278 struct dcons_ch *o, *i; 279 off_t newbuf; 280 int new = 0; 281 282 o = &dc->port[j].o; 283 newbuf = dc->paddr + ntohl(dbuf.ooffset[j]); 284 o->size = ntohl(dbuf.osize[j]); 285 286 if (newbuf != o->buf) { 287 /* buffer address has changes */ 288 new = 1; 289 o->gen = ntohl(dbuf.optr[j]) >> DCONS_GEN_SHIFT; 290 o->pos = ntohl(dbuf.optr[j]) & DCONS_POS_MASK; 291 o->buf = newbuf; 292 } 293 294 i = &dc->port[j].i; 295 i->size = ntohl(dbuf.isize[j]); 296 i->gen = ntohl(dbuf.iptr[j]) >> DCONS_GEN_SHIFT; 297 i->pos = ntohl(dbuf.iptr[j]) & DCONS_POS_MASK; 298 i->buf = dc->paddr + ntohl(dbuf.ioffset[j]); 299 300 if (verbose) { 301 printf("port %d size offset gen pos\n", j); 302 #if __FreeBSD_version < 500000 303 printf("output: %5d %6ld %5d %5d\n" 304 "input : %5d %6ld %5d %5d\n", 305 #else 306 printf("output: %5d %6d %5d %5d\n" 307 "input : %5d %6d %5d %5d\n", 308 #endif 309 o->size, ntohl(dbuf.ooffset[j]), o->gen, o->pos, 310 i->size, ntohl(dbuf.ioffset[j]), i->gen, i->pos); 311 } 312 313 if (IS_CONSOLE(&dc->port[j]) && new && 314 (dc->flags & F_REPLAY) !=0) { 315 if (o->gen > 0) 316 o->gen --; 317 else 318 o->pos = 0; 319 } 320 } 321 dconschat_ready(dc, 1, NULL); 322 return(0); 323 } 324 325 static int 326 dconschat_get_ptr (struct dcons_state *dc) { 327 int dlen, i; 328 u_int32_t ptr[DCONS_NPORT*2+1]; 329 static int retry = RETRY; 330 331 again: 332 dlen = dread(dc, &ptr, sizeof(ptr), 333 dc->paddr + __offsetof(struct dcons_buf, magic)); 334 335 if (dlen < 0) { 336 if (errno == ETIMEDOUT) 337 if (retry -- > 0) 338 goto again; 339 dconschat_ready(dc, 0, "get ptr failed"); 340 return(-1); 341 } 342 if (ptr[0] != htonl(DCONS_MAGIC)) { 343 dconschat_ready(dc, 0, "wrong magic"); 344 return(-1); 345 } 346 retry = RETRY; 347 for (i = 0; i < DCONS_NPORT; i ++) { 348 dc->port[i].optr = ntohl(ptr[i + 1]); 349 dc->port[i].iptr = ntohl(ptr[DCONS_NPORT + i + 1]); 350 } 351 return(0); 352 } 353 354 #define MAX_XFER 2048 355 static int 356 dconschat_read_dcons(struct dcons_state *dc, int port, char *buf, int len) 357 { 358 struct dcons_ch *ch; 359 u_int32_t ptr, pos, gen, next_gen; 360 int rlen, dlen, lost; 361 int retry = RETRY; 362 363 ch = &dc->port[port].o; 364 ptr = dc->port[port].optr; 365 gen = ptr >> DCONS_GEN_SHIFT; 366 pos = ptr & DCONS_POS_MASK; 367 if (gen == ch->gen && pos == ch->pos) 368 return (-1); 369 370 next_gen = DCONS_NEXT_GEN(ch->gen); 371 /* XXX sanity check */ 372 if (gen == ch->gen) { 373 if (pos > ch->pos) 374 goto ok; 375 lost = ch->size * DCONS_GEN_MASK - ch->pos; 376 ch->pos = 0; 377 } else if (gen == next_gen) { 378 if (pos <= ch->pos) 379 goto ok; 380 lost = pos - ch->pos; 381 ch->pos = pos; 382 } else { 383 lost = gen - ch->gen; 384 if (lost < 0) 385 lost += DCONS_GEN_MASK; 386 if (verbose) 387 printf("[genskip %d]", lost); 388 lost = lost * ch->size - ch->pos; 389 ch->pos = 0; 390 ch->gen = gen; 391 } 392 /* generation skipped !! */ 393 /* XXX discard */ 394 if (verbose) 395 printf("[lost %d]", lost); 396 ok: 397 if (gen == ch->gen) 398 rlen = pos - ch->pos; 399 else 400 rlen = ch->size - ch->pos; 401 402 if (rlen > MAX_XFER) 403 rlen = MAX_XFER; 404 if (rlen > len) 405 rlen = len; 406 407 #if 1 408 if (verbose) 409 printf("[%d]", rlen); fflush(stdout); 410 #endif 411 412 again: 413 dlen = dread(dc, buf, rlen, ch->buf + ch->pos); 414 if (dlen < 0) { 415 if (errno == ETIMEDOUT) 416 if (retry -- > 0) 417 goto again; 418 dconschat_ready(dc, 0, "read buffer failed"); 419 return(-1); 420 } 421 if (dlen != rlen) 422 warnx("dlen(%d) != rlen(%d)\n", dlen, rlen); 423 ch->pos += dlen; 424 if (ch->pos >= ch->size) { 425 ch->gen = next_gen; 426 ch->pos = 0; 427 if (verbose) 428 printf("read_dcons: gen=%d", ch->gen); 429 } 430 return (dlen); 431 } 432 433 static int 434 dconschat_write_dcons(struct dcons_state *dc, int port, char *buf, int blen) 435 { 436 struct dcons_ch *ch; 437 u_int32_t ptr; 438 int len, wlen; 439 int retry = RETRY; 440 441 ch = &dc->port[port].i; 442 ptr = dc->port[port].iptr; 443 444 /* the others may advance the pointer sync with it */ 445 ch->gen = ptr >> DCONS_GEN_SHIFT; 446 ch->pos = ptr & DCONS_POS_MASK; 447 448 while(blen > 0) { 449 wlen = MIN(blen, ch->size - ch->pos); 450 wlen = MIN(wlen, MAX_XFER); 451 len = dwrite(dc, buf, wlen, ch->buf + ch->pos); 452 if (len < 0) { 453 if (errno == ETIMEDOUT) 454 if (retry -- > 0) 455 continue; /* try again */ 456 dconschat_ready(dc, 0, "write buffer failed"); 457 return(-1); 458 } 459 ch->pos += len; 460 buf += len; 461 blen -= len; 462 if (ch->pos >= ch->size) { 463 ch->gen = DCONS_NEXT_GEN(ch->gen); 464 ch->pos = 0; 465 if (verbose) 466 printf("write_dcons: gen=%d", ch->gen); 467 468 } 469 } 470 471 ptr = DCONS_MAKE_PTR(ch); 472 dc->port[port].iptr = ptr; 473 474 if (verbose > 2) 475 printf("(iptr: 0x%x)", ptr); 476 again: 477 len = dwrite(dc, &ptr, sizeof(u_int32_t), 478 dc->paddr + __offsetof(struct dcons_buf, iptr[port])); 479 if (len < 0) { 480 if (errno == ETIMEDOUT) 481 if (retry -- > 0) 482 goto again; 483 dconschat_ready(dc, 0, "write ptr failed"); 484 return(-1); 485 } 486 return(0); 487 } 488 489 static int 490 dconschat_write_socket(int fd, char *buf, int len) 491 { 492 write(fd, buf, len); 493 if (verbose > 1) { 494 buf[len] = 0; 495 printf("[%s]", buf); 496 } 497 return (0); 498 } 499 500 static void 501 dconschat_init_socket(struct dcons_state *dc, int port, char *host, int sport) 502 { 503 struct addrinfo hints, *res; 504 int on = 1, error; 505 char service[10]; 506 struct kevent kev; 507 struct dcons_port *p; 508 509 p = &dc->port[port]; 510 p->port = port; 511 p->infd = p->outfd = -1; 512 513 if (sport < 0) 514 return; 515 516 if (sport == 0) { 517 518 /* Use stdin and stdout */ 519 p->infd = STDIN_FILENO; 520 p->outfd = STDOUT_FILENO; 521 p->s = -1; 522 if (tc_set == 0 && 523 tcgetattr(STDIN_FILENO, &dc->tsave) == 0) { 524 struct termios traw; 525 526 traw = dc->tsave; 527 cfmakeraw(&traw); 528 tcsetattr(STDIN_FILENO, TCSADRAIN, &traw); 529 tc_set = 1; 530 } 531 EV_SET(&kev, p->infd, EVFILT_READ, EV_ADD, NOTE_LOWAT, 1, 532 (void *)p); 533 kevent(dc->kq, &kev, 1, NULL, 0, &dc->zero); 534 return; 535 } 536 537 memset(&hints, 0, sizeof(hints)); 538 hints.ai_flags = AI_PASSIVE; 539 #if 1 /* gdb can talk v4 only */ 540 hints.ai_family = PF_INET; 541 #else 542 hints.ai_family = PF_UNSPEC; 543 #endif 544 hints.ai_socktype = SOCK_STREAM; 545 hints.ai_protocol = 0; 546 547 if (verbose) 548 printf("%s:%d for port %d\n", 549 host == NULL ? "*" : host, sport, port); 550 snprintf(service, sizeof(service), "%d", sport); 551 error = getaddrinfo(host, service, &hints, &res); 552 if (error) 553 errx(1, "tcp/%s: %s\n", service, gai_strerror(error)); 554 p->res = res; 555 p->s = socket(res->ai_family, res->ai_socktype, res->ai_protocol); 556 if (p->s < 0) 557 err(1, "socket"); 558 setsockopt(p->s, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on)); 559 560 if (bind(p->s, p->res->ai_addr, p->res->ai_addrlen) < 0) { 561 err(1, "bind"); 562 } 563 if (listen(p->s, 1) < 0) 564 err(1, "listen"); 565 EV_SET(&kev, p->s, EVFILT_READ, EV_ADD | EV_ONESHOT, 0, 0, (void *)p); 566 error = kevent(dc->kq, &kev, 1, NULL, 0, &dc->to); 567 if (error < 0) 568 err(1, "kevent"); 569 return; 570 } 571 572 static int 573 dconschat_accept_socket(struct dcons_state *dc, struct dcons_port *p) 574 { 575 int foo, ns, flags; 576 struct kevent kev; 577 578 /* accept connection */ 579 foo = p->res->ai_addrlen; 580 ns = accept(p->s, p->res->ai_addr, &foo); 581 if (ns < 0) 582 err(1, "accept"); 583 if (verbose) 584 printf("port%d accepted\n", p->port); 585 586 flags = fcntl(ns, F_GETFL, 0); 587 flags |= O_NDELAY; 588 fcntl(ns, F_SETFL, flags); 589 #if 1 590 if (IS_CONSOLE(p) && (dc->flags & F_TELNET) != 0) { 591 char sga[] = {IAC, WILL, TELOPT_SGA}; 592 char linemode[] = {IAC, DONT, TELOPT_LINEMODE}; 593 char echo[] = {IAC, WILL, TELOPT_ECHO}; 594 char bin[] = {IAC, DO, TELOPT_BINARY}; 595 596 write(ns, sga, sizeof(sga)); 597 write(ns, linemode, sizeof(linemode)); 598 write(ns, echo, sizeof(echo)); 599 write(ns, bin, sizeof(bin)); 600 p->skip_read = 0; 601 } 602 #endif 603 604 p->infd = p->outfd = ns; 605 EV_SET(&kev, ns, EVFILT_READ, EV_ADD, NOTE_LOWAT, 1, (void *)p); 606 kevent(dc->kq, &kev, 1, NULL, 0, &dc->zero); 607 return(0); 608 } 609 610 static int 611 dconschat_read_filter(struct dcons_state *dc, struct dcons_port *p, 612 u_char *sp, int slen, u_char *dp, int *dlen) 613 { 614 static u_char abreak[3] = {13 /* CR */, 126 /* ~ */, 2 /* ^B */}; 615 616 while (slen > 0) { 617 if (IS_CONSOLE(p)) { 618 if ((dc->flags & F_TELNET) != 0) { 619 /* XXX Telent workarounds */ 620 if (p->skip_read -- > 0) { 621 sp ++; 622 slen --; 623 continue; 624 } 625 if (*sp == IAC) { 626 if (verbose) 627 printf("(IAC)"); 628 p->skip_read = 2; 629 sp ++; 630 slen --; 631 continue; 632 } 633 if (*sp == 0) { 634 if (verbose) 635 printf("(0 stripped)"); 636 sp ++; 637 slen --; 638 continue; 639 } 640 } 641 switch (dc->escape_state) { 642 case STATE1: 643 if (*sp == KEY_TILDE) 644 dc->escape_state = STATE2; 645 else 646 dc->escape_state = STATE0; 647 break; 648 case STATE2: 649 dc->escape_state = STATE0; 650 if (*sp == '.') 651 dconschat_cleanup(0); 652 } 653 if (*sp == KEY_CR) 654 dc->escape_state = STATE1; 655 } else if (IS_GDB(p)) { 656 /* GDB: ^C -> CR+~+^B */ 657 if (*sp == 0x3 && (dc->flags & F_ALT_BREAK) != 0) { 658 bcopy(abreak, dp, 3); 659 dp += 3; 660 sp ++; 661 *dlen += 3; 662 /* discard rest of the packet */ 663 slen = 0; 664 break; 665 } 666 } 667 *dp++ = *sp++; 668 (*dlen) ++; 669 slen --; 670 } 671 return (*dlen); 672 673 } 674 675 static int 676 dconschat_read_socket(struct dcons_state *dc, struct dcons_port *p) 677 { 678 struct kevent kev; 679 int len, wlen; 680 char rbuf[MAX_XFER], wbuf[MAX_XFER+2]; 681 682 if ((len = read(p->infd, rbuf, sizeof(rbuf))) > 0) { 683 wlen = 0; 684 dconschat_read_filter(dc, p, rbuf, len, wbuf, &wlen); 685 /* XXX discard if not ready*/ 686 if (wlen > 0 && (dc->flags & F_READY) != 0) { 687 dconschat_write_dcons(dc, p->port, wbuf, wlen); 688 if (verbose > 1) { 689 wbuf[wlen] = 0; 690 printf("(%s)\n", wbuf); 691 } 692 if (verbose) { 693 printf("(%d)", wlen); 694 fflush(stdout); 695 } 696 } 697 } else { 698 if (verbose) { 699 if (len == 0) 700 warnx("port%d: closed", p->port); 701 else 702 warn("port%d: read", p->port); 703 } 704 EV_SET(&kev, p->infd, EVFILT_READ, 705 EV_DELETE, 0, 0, NULL); 706 kevent(dc->kq, &kev, 1, NULL, 0, &dc->zero); 707 close(p->infd); 708 close(p->outfd); 709 /* XXX exit for pipe case XXX */ 710 EV_SET(&kev, p->s, EVFILT_READ, 711 EV_ADD | EV_ONESHOT, 0, 0, (void *) p); 712 kevent(dc->kq, &kev, 1, NULL, 0, &dc->zero); 713 p->infd = p->outfd = -1; 714 } 715 return(0); 716 } 717 #define NEVENT 5 718 static int 719 dconschat_proc_socket(struct dcons_state *dc) 720 { 721 struct kevent elist[NEVENT], *e; 722 int i, n; 723 struct dcons_port *p; 724 725 n = kevent(dc->kq, NULL, 0, elist, NEVENT, &dc->to); 726 for (i = 0; i < n; i ++) { 727 e = &elist[i]; 728 p = (struct dcons_port *)e->udata; 729 if (e->ident == p->s) { 730 dconschat_accept_socket(dc, p); 731 } else { 732 dconschat_read_socket(dc, p); 733 } 734 } 735 return(0); 736 } 737 738 static int 739 dconschat_proc_dcons(struct dcons_state *dc) 740 { 741 int port, len, err; 742 char buf[MAX_XFER]; 743 struct dcons_port *p; 744 745 err = dconschat_get_ptr(dc); 746 if (err) { 747 /* XXX we should stop write operation too. */ 748 return err; 749 } 750 for (port = 0; port < DCONS_NPORT; port ++) { 751 p = &dc->port[port]; 752 if (p->infd < 0) 753 continue; 754 while ((len = dconschat_read_dcons(dc, port, buf, 755 sizeof(buf))) > 0) { 756 dconschat_write_socket(p->outfd, buf, len); 757 dconschat_get_ptr(dc); 758 } 759 if ((dc->flags & F_ONE_SHOT) != 0 && len <= 0) 760 dconschat_cleanup(0); 761 } 762 return 0; 763 } 764 765 static int 766 dconschat_start_session(struct dcons_state *dc) 767 { 768 int counter = 0; 769 770 while (1) { 771 if ((dc->flags & F_READY) == 0 && 772 (++counter % (poll_hz * DCONS_POLL_OFFLINE)) == 0) 773 dconschat_fetch_header(dc); 774 if ((dc->flags & F_READY) != 0) 775 dconschat_proc_dcons(dc); 776 dconschat_proc_socket(dc); 777 } 778 return (0); 779 } 780 781 static void 782 usage(void) 783 { 784 fprintf(stderr, 785 "usage: dconschat [-brvwRT1] [-h hz] [-C port] [-G port]\n" 786 "\t\t\t[-M core] [-N system]\n" 787 "\t\t\t[-u unit] [-a address] [-t target_eui64]\n" 788 "\t-b translate ctrl-C to CR+~+ctrl-B on gdb port\n" 789 "\t-v verbose\n" 790 "\t-w listen on wildcard address rather than localhost\n" 791 "\t-r replay old buffer on connection\n" 792 "\t-R read-only\n" 793 "\t-T enable Telnet protocol workaround on console port\n" 794 "\t-1 one shot: read buffer and exit\n" 795 "\t-h polling rate\n" 796 "\t-C port number for console port\n" 797 "\t-G port number for gdb port\n" 798 "\t(for KVM)\n" 799 "\t-M core file\n" 800 "\t-N system file\n" 801 "\t(for FireWire)\n" 802 "\t-u specify unit number of the bus\n" 803 "\t-t EUI64 of target host (must be specified)\n" 804 "\t-a physical address of dcons buffer on target host\n" 805 ); 806 exit(0); 807 } 808 int 809 main(int argc, char **argv) 810 { 811 struct dcons_state *dc; 812 struct fw_eui64 eui; 813 struct eui64 target; 814 char devname[256], *core = NULL, *system = NULL; 815 int i, ch, error; 816 int unit=0, wildcard=0; 817 int port[DCONS_NPORT]; 818 819 bzero(&sc, sizeof(sc)); 820 dc = ≻ 821 dc->flags |= USE_CROM ? F_USE_CROM : 0; 822 823 /* defualt ports */ 824 port[0] = 0; /* stdin/out for console */ 825 port[1] = -1; /* disable gdb port */ 826 827 while ((ch = getopt(argc, argv, "a:bh:rt:u:vwC:G:M:N:RT1")) != -1) { 828 switch(ch) { 829 case 'a': 830 dc->paddr = strtoull(optarg, NULL, 0); 831 dc->flags &= ~F_USE_CROM; 832 break; 833 case 'b': 834 dc->flags |= F_ALT_BREAK; 835 break; 836 case 'h': 837 poll_hz = strtoul(optarg, NULL, 0); 838 if (poll_hz == 0) 839 poll_hz = DCONS_POLL_HZ; 840 break; 841 case 'r': 842 dc->flags |= F_REPLAY; 843 break; 844 case 't': 845 if (eui64_hostton(optarg, &target) != 0 && 846 eui64_aton(optarg, &target) != 0) 847 errx(1, "invalid target: %s", optarg); 848 eui.hi = ntohl(*(u_int32_t*)&(target.octet[0])); 849 eui.lo = ntohl(*(u_int32_t*)&(target.octet[4])); 850 dc->type = TYPE_FW; 851 break; 852 case 'u': 853 unit = strtol(optarg, NULL, 0); 854 break; 855 case 'v': 856 verbose ++; 857 break; 858 case 'w': 859 wildcard = 1; 860 break; 861 case 'C': 862 port[0] = strtol(optarg, NULL, 0); 863 break; 864 case 'G': 865 port[1] = strtol(optarg, NULL, 0); 866 break; 867 case 'M': 868 core = optarg; 869 break; 870 case 'N': 871 system = optarg; 872 break; 873 case 'R': 874 dc->flags |= F_RD_ONLY; 875 break; 876 case 'T': 877 dc->flags |= F_TELNET; 878 break; 879 case '1': 880 dc->flags |= F_ONE_SHOT | F_REPLAY; 881 break; 882 default: 883 usage(); 884 } 885 } 886 if (dc->paddr == 0 && (dc->flags & F_USE_CROM) == 0) { 887 warnx("no address specified"); 888 usage(); 889 } 890 891 if (port[0] < 0 && port[1] < 0) { 892 warnx("no port specified"); 893 usage(); 894 } 895 896 /* set signal handler */ 897 signal(SIGHUP, dconschat_cleanup); 898 signal(SIGINT, dconschat_cleanup); 899 signal(SIGPIPE, dconschat_cleanup); 900 signal(SIGTERM, dconschat_cleanup); 901 902 /* init firewire */ 903 switch (dc->type) { 904 case TYPE_FW: 905 #define MAXDEV 10 906 for (i = 0; i < MAXDEV; i ++) { 907 snprintf(devname, sizeof(devname), 908 "/dev/fwmem%d.%d", unit, i); 909 dc->fd = open(devname, O_RDWR); 910 if (dc->fd >= 0) 911 goto found; 912 } 913 err(1, "open"); 914 found: 915 error = ioctl(dc->fd, FW_SDEUI64, &eui); 916 if (error) 917 err(1, "ioctl"); 918 break; 919 case TYPE_KVM: 920 { 921 struct nlist nl[] = {{"dcons_buf"}, {""}}; 922 void *dcons_buf; 923 924 dc->kd = kvm_open(system, core, NULL, 925 (dc->flags & F_RD_ONLY) ? O_RDONLY : O_RDWR, "dconschat"); 926 if (dc->kd == NULL) 927 errx(1, "kvm_open"); 928 929 if (kvm_nlist(dc->kd, nl) < 0) 930 errx(1, "kvm_nlist: %s", kvm_geterr(dc->kd)); 931 932 if (kvm_read(dc->kd, nl[0].n_value, &dcons_buf, 933 sizeof(void *)) < 0) 934 errx(1, "kvm_read: %s", kvm_geterr(dc->kd)); 935 dc->paddr = (uintptr_t)dcons_buf; 936 if (verbose) 937 printf("dcons_buf: 0x%x\n", (uint)dc->paddr); 938 break; 939 } 940 } 941 dconschat_fetch_header(dc); 942 943 /* iniit sockets */ 944 dc->kq = kqueue(); 945 if (poll_hz == 1) { 946 dc->to.tv_sec = 1; 947 dc->to.tv_nsec = 0; 948 } else { 949 dc->to.tv_sec = 0; 950 dc->to.tv_nsec = 1000 * 1000 * 1000 / poll_hz; 951 } 952 dc->zero.tv_sec = 0; 953 dc->zero.tv_nsec = 0; 954 for (i = 0; i < DCONS_NPORT; i++) 955 dconschat_init_socket(dc, i, 956 wildcard ? NULL : "localhost", port[i]); 957 958 dconschat_start_session(dc); 959 960 for (i = 0; i < DCONS_NPORT; i++) { 961 freeaddrinfo(dc->port[i].res); 962 } 963 return (0); 964 } 965