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