1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2016 iXsystems Inc. 5 * All rights reserved. 6 * 7 * This software was developed by Jakub Klama <jceel@FreeBSD.org> 8 * under sponsorship from iXsystems Inc. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer 15 * in this position and unchanged. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 /* 34 * Copyright 2018 Joyent, Inc. 35 * Copyright 2025 OmniOS Community Edition (OmniOSce) Association. 36 */ 37 38 39 #include <sys/param.h> 40 #ifndef WITHOUT_CAPSICUM 41 #include <sys/capsicum.h> 42 #endif 43 #include <sys/linker_set.h> 44 #include <sys/uio.h> 45 #include <sys/types.h> 46 #include <sys/socket.h> 47 #include <sys/un.h> 48 #ifndef __FreeBSD__ 49 #include <sys/limits.h> 50 #endif 51 52 #ifndef WITHOUT_CAPSICUM 53 #include <capsicum_helpers.h> 54 #endif 55 #include <err.h> 56 #include <errno.h> 57 #include <fcntl.h> 58 #include <stdio.h> 59 #include <stdlib.h> 60 #include <stdbool.h> 61 #include <string.h> 62 #include <unistd.h> 63 #include <assert.h> 64 #include <pthread.h> 65 #include <libgen.h> 66 #include <sysexits.h> 67 68 #include "bhyverun.h" 69 #include "config.h" 70 #include "debug.h" 71 #include "pci_emul.h" 72 #include "virtio.h" 73 #include "mevent.h" 74 #include "sockstream.h" 75 76 #define VTCON_RINGSZ 64 77 #define VTCON_MAXPORTS 16 78 #define VTCON_MAXQ (VTCON_MAXPORTS * 2 + 2) 79 80 #define VTCON_DEVICE_READY 0 81 #define VTCON_DEVICE_ADD 1 82 #define VTCON_DEVICE_REMOVE 2 83 #define VTCON_PORT_READY 3 84 #define VTCON_CONSOLE_PORT 4 85 #define VTCON_CONSOLE_RESIZE 5 86 #define VTCON_PORT_OPEN 6 87 #define VTCON_PORT_NAME 7 88 89 #define VTCON_F_SIZE 0 90 #define VTCON_F_MULTIPORT 1 91 #define VTCON_F_EMERG_WRITE 2 92 #define VTCON_S_HOSTCAPS \ 93 (VTCON_F_SIZE | VTCON_F_MULTIPORT | VTCON_F_EMERG_WRITE) 94 95 static int pci_vtcon_debug; 96 #define DPRINTF(params) if (pci_vtcon_debug) PRINTLN params 97 #define WPRINTF(params) PRINTLN params 98 99 struct pci_vtcon_softc; 100 struct pci_vtcon_port; 101 struct pci_vtcon_config; 102 typedef void (pci_vtcon_cb_t)(struct pci_vtcon_port *, void *, struct iovec *, 103 int); 104 105 struct pci_vtcon_port { 106 struct pci_vtcon_softc * vsp_sc; 107 int vsp_id; 108 const char * vsp_name; 109 bool vsp_enabled; 110 bool vsp_console; 111 bool vsp_rx_ready; 112 bool vsp_open; 113 int vsp_rxq; 114 int vsp_txq; 115 void * vsp_arg; 116 pci_vtcon_cb_t * vsp_cb; 117 }; 118 119 struct pci_vtcon_sock 120 { 121 struct pci_vtcon_port * vss_port; 122 const char * vss_path; 123 struct mevent * vss_server_evp; 124 struct mevent * vss_conn_evp; 125 int vss_server_fd; 126 int vss_conn_fd; 127 bool vss_open; 128 }; 129 130 struct pci_vtcon_softc { 131 struct virtio_softc vsc_vs; 132 struct vqueue_info vsc_queues[VTCON_MAXQ]; 133 pthread_mutex_t vsc_mtx; 134 uint64_t vsc_cfg; 135 uint64_t vsc_features; 136 char * vsc_rootdir; 137 int vsc_kq; 138 bool vsc_ready; 139 struct pci_vtcon_port vsc_control_port; 140 struct pci_vtcon_port vsc_ports[VTCON_MAXPORTS]; 141 struct pci_vtcon_config *vsc_config; 142 }; 143 144 struct pci_vtcon_config { 145 uint16_t cols; 146 uint16_t rows; 147 uint32_t max_nr_ports; 148 uint32_t emerg_wr; 149 } __attribute__((packed)); 150 151 struct pci_vtcon_control { 152 uint32_t id; 153 uint16_t event; 154 uint16_t value; 155 } __attribute__((packed)); 156 157 struct pci_vtcon_console_resize { 158 uint16_t cols; 159 uint16_t rows; 160 } __attribute__((packed)); 161 162 static void pci_vtcon_reset(void *); 163 static void pci_vtcon_notify_rx(void *, struct vqueue_info *); 164 static void pci_vtcon_notify_tx(void *, struct vqueue_info *); 165 static int pci_vtcon_cfgread(void *, int, int, uint32_t *); 166 static int pci_vtcon_cfgwrite(void *, int, int, uint32_t); 167 static void pci_vtcon_neg_features(void *, uint64_t); 168 static void pci_vtcon_sock_accept(int, enum ev_type, void *); 169 static void pci_vtcon_sock_rx(int, enum ev_type, void *); 170 static void pci_vtcon_sock_tx(struct pci_vtcon_port *, void *, struct iovec *, 171 int); 172 static void pci_vtcon_control_send(struct pci_vtcon_softc *, 173 struct pci_vtcon_control *, const void *, size_t); 174 static void pci_vtcon_announce_port(struct pci_vtcon_port *); 175 static void pci_vtcon_open_port(struct pci_vtcon_port *, bool); 176 177 static struct virtio_consts vtcon_vi_consts = { 178 .vc_name = "vtcon", 179 .vc_nvq = VTCON_MAXQ, 180 .vc_cfgsize = sizeof(struct pci_vtcon_config), 181 .vc_reset = pci_vtcon_reset, 182 .vc_cfgread = pci_vtcon_cfgread, 183 .vc_cfgwrite = pci_vtcon_cfgwrite, 184 .vc_apply_features = pci_vtcon_neg_features, 185 .vc_hv_caps = VTCON_S_HOSTCAPS, 186 }; 187 188 static void 189 pci_vtcon_reset(void *vsc) 190 { 191 struct pci_vtcon_softc *sc; 192 193 sc = vsc; 194 195 DPRINTF(("vtcon: device reset requested!")); 196 vi_reset_dev(&sc->vsc_vs); 197 } 198 199 static void 200 pci_vtcon_neg_features(void *vsc, uint64_t negotiated_features) 201 { 202 struct pci_vtcon_softc *sc = vsc; 203 204 sc->vsc_features = negotiated_features; 205 } 206 207 static int 208 pci_vtcon_cfgread(void *vsc, int offset, int size, uint32_t *retval) 209 { 210 struct pci_vtcon_softc *sc = vsc; 211 void *ptr; 212 213 ptr = (uint8_t *)sc->vsc_config + offset; 214 memcpy(retval, ptr, size); 215 return (0); 216 } 217 218 static int 219 pci_vtcon_cfgwrite(void *vsc __unused, int offset __unused, int size __unused, 220 uint32_t val __unused) 221 { 222 return (0); 223 } 224 225 static inline struct pci_vtcon_port * 226 pci_vtcon_vq_to_port(struct pci_vtcon_softc *sc, struct vqueue_info *vq) 227 { 228 uint16_t num = vq->vq_num; 229 230 if (num == 0 || num == 1) 231 return (&sc->vsc_ports[0]); 232 233 if (num == 2 || num == 3) 234 return (&sc->vsc_control_port); 235 236 return (&sc->vsc_ports[(num / 2) - 1]); 237 } 238 239 static inline struct vqueue_info * 240 pci_vtcon_port_to_vq(struct pci_vtcon_port *port, bool tx_queue) 241 { 242 int qnum; 243 244 qnum = tx_queue ? port->vsp_txq : port->vsp_rxq; 245 return (&port->vsp_sc->vsc_queues[qnum]); 246 } 247 248 static struct pci_vtcon_port * 249 pci_vtcon_port_add(struct pci_vtcon_softc *sc, int port_id, const char *name, 250 pci_vtcon_cb_t *cb, void *arg) 251 { 252 struct pci_vtcon_port *port; 253 254 port = &sc->vsc_ports[port_id]; 255 if (port->vsp_enabled) { 256 errno = EBUSY; 257 return (NULL); 258 } 259 port->vsp_id = port_id; 260 port->vsp_sc = sc; 261 port->vsp_name = name; 262 port->vsp_cb = cb; 263 port->vsp_arg = arg; 264 265 if (port->vsp_id == 0) { 266 /* port0 */ 267 port->vsp_txq = 0; 268 port->vsp_rxq = 1; 269 } else { 270 port->vsp_txq = (port_id + 1) * 2; 271 port->vsp_rxq = port->vsp_txq + 1; 272 } 273 274 port->vsp_enabled = true; 275 return (port); 276 } 277 278 static int 279 pci_vtcon_sock_add(struct pci_vtcon_softc *sc, const char *port_name, 280 const nvlist_t *nvl) 281 { 282 struct pci_vtcon_sock *sock = NULL; 283 #ifdef __FreeBSD__ 284 struct sockaddr_un sun; 285 #else 286 /* Our compiler #defines 'sun' as '1'. Awesome. */ 287 struct sockaddr_un addr; 288 #endif 289 const char *name, *path; 290 char *cp, *pathcopy; 291 long port; 292 #ifdef __FreeBSD__ 293 int s = -1, fd = -1, error = 0; 294 #else 295 int s = -1, error = 0; 296 #endif 297 #ifndef WITHOUT_CAPSICUM 298 cap_rights_t rights; 299 #endif 300 301 port = strtol(port_name, &cp, 0); 302 if (*cp != '\0' || port < 0 || port >= VTCON_MAXPORTS) { 303 EPRINTLN("vtcon: Invalid port %s", port_name); 304 error = -1; 305 goto out; 306 } 307 308 path = get_config_value_node(nvl, "path"); 309 if (path == NULL) { 310 EPRINTLN("vtcon: required path missing for port %ld", port); 311 error = -1; 312 goto out; 313 } 314 315 sock = calloc(1, sizeof(struct pci_vtcon_sock)); 316 if (sock == NULL) { 317 error = -1; 318 goto out; 319 } 320 321 s = socket(AF_UNIX, SOCK_STREAM, 0); 322 if (s < 0) { 323 error = -1; 324 goto out; 325 } 326 327 #ifdef __FreeBSD__ 328 pathcopy = strdup(path); 329 if (pathcopy == NULL) { 330 error = -1; 331 goto out; 332 } 333 334 fd = open(dirname(pathcopy), O_RDONLY | O_DIRECTORY); 335 if (fd < 0) { 336 free(pathcopy); 337 error = -1; 338 goto out; 339 } 340 341 sun.sun_family = AF_UNIX; 342 sun.sun_len = sizeof(struct sockaddr_un); 343 strcpy(pathcopy, path); 344 strlcpy(sun.sun_path, basename(pathcopy), sizeof(sun.sun_path)); 345 free(pathcopy); 346 347 if (bindat(fd, s, (struct sockaddr *)&sun, sun.sun_len) < 0) { 348 error = -1; 349 goto out; 350 } 351 #else /* __FreeBSD__ */ 352 /* Do a simple bind rather than the FreeBSD bindat() */ 353 pathcopy = (char *)path; 354 addr.sun_family = AF_UNIX; 355 (void) strlcpy(addr.sun_path, pathcopy, sizeof (addr.sun_path)); 356 if (bind(s, (struct sockaddr *)&addr, sizeof (addr)) < 0) { 357 error = -1; 358 goto out; 359 } 360 #endif /* __FreeBSD__ */ 361 362 if (fcntl(s, F_SETFL, O_NONBLOCK) < 0) { 363 error = -1; 364 goto out; 365 } 366 367 if (listen(s, 1) < 0) { 368 error = -1; 369 goto out; 370 } 371 372 #ifndef WITHOUT_CAPSICUM 373 cap_rights_init(&rights, CAP_ACCEPT, CAP_EVENT, CAP_READ, CAP_WRITE); 374 if (caph_rights_limit(s, &rights) == -1) 375 errx(EX_OSERR, "Unable to apply rights for sandbox"); 376 #endif 377 378 name = get_config_value_node(nvl, "name"); 379 if (name == NULL) { 380 EPRINTLN("vtcon: required name missing for port %ld", port); 381 error = -1; 382 goto out; 383 } 384 sock->vss_port = pci_vtcon_port_add(sc, port, name, pci_vtcon_sock_tx, sock); 385 if (sock->vss_port == NULL) { 386 error = -1; 387 goto out; 388 } 389 390 sock->vss_open = false; 391 sock->vss_conn_fd = -1; 392 sock->vss_server_fd = s; 393 sock->vss_server_evp = mevent_add(s, EVF_READ, pci_vtcon_sock_accept, 394 sock); 395 396 if (sock->vss_server_evp == NULL) { 397 error = -1; 398 goto out; 399 } 400 401 out: 402 #ifdef __FreeBSD__ 403 if (fd != -1) 404 close(fd); 405 #endif 406 407 if (error != 0) { 408 if (s != -1) 409 close(s); 410 free(sock); 411 } 412 413 return (error); 414 } 415 416 static void 417 pci_vtcon_sock_accept(int fd __unused, enum ev_type t __unused, void *arg) 418 { 419 struct pci_vtcon_sock *sock = (struct pci_vtcon_sock *)arg; 420 int s; 421 422 s = accept(sock->vss_server_fd, NULL, NULL); 423 if (s < 0) 424 return; 425 426 if (sock->vss_open) { 427 close(s); 428 return; 429 } 430 431 sock->vss_open = true; 432 sock->vss_conn_fd = s; 433 sock->vss_conn_evp = mevent_add(s, EVF_READ, pci_vtcon_sock_rx, sock); 434 435 pci_vtcon_open_port(sock->vss_port, true); 436 } 437 438 static void 439 pci_vtcon_sock_rx(int fd __unused, enum ev_type t __unused, void *arg) 440 { 441 struct pci_vtcon_port *port; 442 struct pci_vtcon_sock *sock = (struct pci_vtcon_sock *)arg; 443 struct vqueue_info *vq; 444 struct vi_req req; 445 struct iovec iov; 446 static char dummybuf[2048]; 447 int len, n; 448 449 port = sock->vss_port; 450 vq = pci_vtcon_port_to_vq(port, true); 451 452 if (!sock->vss_open || !port->vsp_rx_ready) { 453 len = read(sock->vss_conn_fd, dummybuf, sizeof(dummybuf)); 454 if (len == 0) 455 goto close; 456 457 return; 458 } 459 460 if (!vq_has_descs(vq)) { 461 len = read(sock->vss_conn_fd, dummybuf, sizeof(dummybuf)); 462 vq_endchains(vq, 1); 463 if (len == 0) 464 goto close; 465 466 return; 467 } 468 469 do { 470 n = vq_getchain(vq, &iov, 1, &req); 471 assert(n == 1); 472 len = readv(sock->vss_conn_fd, &iov, n); 473 474 if (len == 0 || (len < 0 && errno == EWOULDBLOCK)) { 475 vq_retchains(vq, 1); 476 vq_endchains(vq, 0); 477 if (len == 0) 478 goto close; 479 480 return; 481 } 482 483 vq_relchain(vq, req.idx, len); 484 } while (vq_has_descs(vq)); 485 486 vq_endchains(vq, 1); 487 488 close: 489 mevent_delete_close(sock->vss_conn_evp); 490 sock->vss_conn_fd = -1; 491 sock->vss_open = false; 492 } 493 494 static void 495 pci_vtcon_sock_tx(struct pci_vtcon_port *port __unused, void *arg __unused, 496 struct iovec *iov, int niov) 497 { 498 struct pci_vtcon_sock *sock; 499 int i, ret; 500 501 #ifndef __FreeBSD__ 502 ret = 0; 503 #endif 504 505 sock = (struct pci_vtcon_sock *)arg; 506 507 if (sock->vss_conn_fd == -1) 508 return; 509 510 for (i = 0; i < niov; i++) { 511 ret = stream_write(sock->vss_conn_fd, iov[i].iov_base, 512 iov[i].iov_len); 513 if (ret <= 0) 514 break; 515 } 516 517 if (ret <= 0) { 518 mevent_delete_close(sock->vss_conn_evp); 519 sock->vss_conn_fd = -1; 520 sock->vss_open = false; 521 } 522 } 523 524 static void 525 pci_vtcon_control_tx(struct pci_vtcon_port *port, void *arg __unused, 526 struct iovec *iov, int niov) 527 { 528 struct pci_vtcon_softc *sc; 529 struct pci_vtcon_port *tmp; 530 struct pci_vtcon_control resp, *ctrl; 531 int i; 532 533 assert(niov == 1); 534 535 sc = port->vsp_sc; 536 ctrl = (struct pci_vtcon_control *)iov->iov_base; 537 538 switch (ctrl->event) { 539 case VTCON_DEVICE_READY: 540 sc->vsc_ready = true; 541 /* set port ready events for registered ports */ 542 for (i = 0; i < VTCON_MAXPORTS; i++) { 543 tmp = &sc->vsc_ports[i]; 544 if (tmp->vsp_enabled) 545 pci_vtcon_announce_port(tmp); 546 547 if (tmp->vsp_open) 548 pci_vtcon_open_port(tmp, true); 549 } 550 break; 551 552 case VTCON_PORT_READY: 553 tmp = &sc->vsc_ports[ctrl->id]; 554 if (ctrl->id >= VTCON_MAXPORTS || !tmp->vsp_enabled) { 555 WPRINTF(("VTCON_PORT_READY event for unknown port %d", 556 ctrl->id)); 557 return; 558 } 559 560 if (tmp->vsp_console) { 561 resp.event = VTCON_CONSOLE_PORT; 562 resp.id = ctrl->id; 563 resp.value = 1; 564 pci_vtcon_control_send(sc, &resp, NULL, 0); 565 } 566 break; 567 } 568 } 569 570 static void 571 pci_vtcon_announce_port(struct pci_vtcon_port *port) 572 { 573 struct pci_vtcon_control event; 574 575 event.id = port->vsp_id; 576 event.event = VTCON_DEVICE_ADD; 577 event.value = 1; 578 pci_vtcon_control_send(port->vsp_sc, &event, NULL, 0); 579 580 event.event = VTCON_PORT_NAME; 581 pci_vtcon_control_send(port->vsp_sc, &event, port->vsp_name, 582 strlen(port->vsp_name)); 583 } 584 585 static void 586 pci_vtcon_open_port(struct pci_vtcon_port *port, bool open) 587 { 588 struct pci_vtcon_control event; 589 590 if (!port->vsp_sc->vsc_ready) { 591 port->vsp_open = true; 592 return; 593 } 594 595 event.id = port->vsp_id; 596 event.event = VTCON_PORT_OPEN; 597 event.value = (int)open; 598 pci_vtcon_control_send(port->vsp_sc, &event, NULL, 0); 599 } 600 601 static void 602 pci_vtcon_control_send(struct pci_vtcon_softc *sc, 603 struct pci_vtcon_control *ctrl, const void *payload, size_t len) 604 { 605 struct vqueue_info *vq; 606 struct vi_req req; 607 struct iovec iov; 608 int n; 609 610 if (len > SIZE_T_MAX - sizeof(struct pci_vtcon_control)) 611 return; 612 613 vq = pci_vtcon_port_to_vq(&sc->vsc_control_port, true); 614 615 if (!vq_has_descs(vq)) 616 return; 617 618 n = vq_getchain(vq, &iov, 1, &req); 619 assert(n == 1); 620 621 if (iov.iov_len < sizeof(struct pci_vtcon_control) + len) 622 goto out; 623 624 memcpy(iov.iov_base, ctrl, sizeof(struct pci_vtcon_control)); 625 if (len > 0) 626 memcpy((uint8_t *)iov.iov_base + 627 sizeof(struct pci_vtcon_control), payload, len); 628 629 out: 630 vq_relchain(vq, req.idx, sizeof(struct pci_vtcon_control) + len); 631 vq_endchains(vq, 1); 632 } 633 634 635 static void 636 pci_vtcon_notify_tx(void *vsc, struct vqueue_info *vq) 637 { 638 struct pci_vtcon_softc *sc; 639 struct pci_vtcon_port *port; 640 struct iovec iov[1]; 641 struct vi_req req; 642 int n; 643 644 sc = vsc; 645 port = pci_vtcon_vq_to_port(sc, vq); 646 647 while (vq_has_descs(vq)) { 648 n = vq_getchain(vq, iov, 1, &req); 649 assert(n == 1); 650 if (port != NULL) 651 port->vsp_cb(port, port->vsp_arg, iov, 1); 652 653 /* 654 * Release this chain and handle more 655 */ 656 vq_relchain(vq, req.idx, 0); 657 } 658 vq_endchains(vq, 1); /* Generate interrupt if appropriate. */ 659 } 660 661 static void 662 pci_vtcon_notify_rx(void *vsc, struct vqueue_info *vq) 663 { 664 struct pci_vtcon_softc *sc; 665 struct pci_vtcon_port *port; 666 667 sc = vsc; 668 port = pci_vtcon_vq_to_port(sc, vq); 669 670 if (!port->vsp_rx_ready) { 671 port->vsp_rx_ready = 1; 672 vq_kick_disable(vq); 673 } 674 } 675 676 /* 677 * Each console device has a "port" node which contains nodes for 678 * each port. Ports are numbered starting at 0. 679 */ 680 static int 681 pci_vtcon_legacy_config_port(nvlist_t *nvl, int port, char *opt) 682 { 683 char *name, *path; 684 char node_name[sizeof("XX")]; 685 nvlist_t *port_nvl; 686 687 name = strsep(&opt, "="); 688 path = opt; 689 if (path == NULL) { 690 EPRINTLN("vtcon: port %s requires a path", name); 691 return (-1); 692 } 693 if (port >= VTCON_MAXPORTS) { 694 EPRINTLN("vtcon: too many ports"); 695 return (-1); 696 } 697 snprintf(node_name, sizeof(node_name), "%d", port); 698 port_nvl = create_relative_config_node(nvl, node_name); 699 set_config_value_node(port_nvl, "name", name); 700 set_config_value_node(port_nvl, "path", path); 701 return (0); 702 } 703 704 static int 705 pci_vtcon_legacy_config(nvlist_t *nvl, const char *opts) 706 { 707 char *opt, *str, *tofree; 708 nvlist_t *ports_nvl; 709 int error, port; 710 711 ports_nvl = create_relative_config_node(nvl, "port"); 712 tofree = str = strdup(opts); 713 error = 0; 714 port = 0; 715 while ((opt = strsep(&str, ",")) != NULL) { 716 error = pci_vtcon_legacy_config_port(ports_nvl, port, opt); 717 if (error) 718 break; 719 port++; 720 } 721 free(tofree); 722 return (error); 723 } 724 725 static int 726 pci_vtcon_init(struct pci_devinst *pi, nvlist_t *nvl) 727 { 728 struct pci_vtcon_softc *sc; 729 nvlist_t *ports_nvl; 730 int i; 731 732 sc = calloc(1, sizeof(struct pci_vtcon_softc)); 733 sc->vsc_config = calloc(1, sizeof(struct pci_vtcon_config)); 734 sc->vsc_config->max_nr_ports = VTCON_MAXPORTS; 735 sc->vsc_config->cols = 80; 736 sc->vsc_config->rows = 25; 737 738 pthread_mutex_init(&sc->vsc_mtx, NULL); 739 740 vi_softc_linkup(&sc->vsc_vs, &vtcon_vi_consts, sc, pi, sc->vsc_queues); 741 sc->vsc_vs.vs_mtx = &sc->vsc_mtx; 742 743 for (i = 0; i < VTCON_MAXQ; i++) { 744 sc->vsc_queues[i].vq_qsize = VTCON_RINGSZ; 745 sc->vsc_queues[i].vq_notify = i % 2 == 0 746 ? pci_vtcon_notify_rx 747 : pci_vtcon_notify_tx; 748 } 749 750 /* initialize config space */ 751 pci_set_cfgdata16(pi, PCIR_DEVICE, VIRTIO_DEV_CONSOLE); 752 pci_set_cfgdata16(pi, PCIR_VENDOR, VIRTIO_VENDOR); 753 pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_SIMPLECOMM); 754 pci_set_cfgdata16(pi, PCIR_SUBDEV_0, VIRTIO_ID_CONSOLE); 755 pci_set_cfgdata16(pi, PCIR_SUBVEND_0, VIRTIO_VENDOR); 756 757 if (vi_intr_init(&sc->vsc_vs, 1, fbsdrun_virtio_msix())) 758 return (1); 759 vi_set_io_bar(&sc->vsc_vs, 0); 760 761 /* create control port */ 762 sc->vsc_control_port.vsp_sc = sc; 763 sc->vsc_control_port.vsp_txq = 2; 764 sc->vsc_control_port.vsp_rxq = 3; 765 sc->vsc_control_port.vsp_cb = pci_vtcon_control_tx; 766 sc->vsc_control_port.vsp_enabled = true; 767 768 ports_nvl = find_relative_config_node(nvl, "port"); 769 if (ports_nvl != NULL) { 770 const char *name; 771 void *cookie; 772 int type; 773 774 cookie = NULL; 775 while ((name = nvlist_next(ports_nvl, &type, &cookie)) != 776 NULL) { 777 if (type != NV_TYPE_NVLIST) 778 continue; 779 780 if (pci_vtcon_sock_add(sc, name, 781 nvlist_get_nvlist(ports_nvl, name)) < 0) { 782 EPRINTLN("cannot create port %s: %s", 783 name, strerror(errno)); 784 return (1); 785 } 786 } 787 } 788 789 return (0); 790 } 791 792 static const struct pci_devemu pci_de_vcon = { 793 .pe_emu = "virtio-console", 794 .pe_init = pci_vtcon_init, 795 .pe_barwrite = vi_pci_write, 796 .pe_barread = vi_pci_read, 797 .pe_legacy_config = pci_vtcon_legacy_config, 798 }; 799 PCI_EMUL_SET(pci_de_vcon); 800