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