17e9052ca8
The VirtIO standard supports two schemes for notification suppression: a notification enable bit and a more sophisticated one (event_idx) that also supports delayed notifications. Currently bhyve fully supports only the first scheme. This patch hides the notification suppression internals by means of two inline routines, vq_kick_enable() and vq_kick_disable(), and makes the code more readable. Moreover, further improve readability by replacing the call to mb() with a call to atomic_thread_fence_seq_cst(), which is already used in virtio.c Reviewed by: pmooney_pfmooney.com, bryanv MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D20581
679 lines
16 KiB
C
679 lines
16 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2016 iXsystems Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by Jakub Klama <jceel@FreeBSD.org>
|
|
* under sponsorship from iXsystems Inc.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in this position and unchanged.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#ifndef WITHOUT_CAPSICUM
|
|
#include <sys/capsicum.h>
|
|
#endif
|
|
#include <sys/linker_set.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/un.h>
|
|
|
|
#ifndef WITHOUT_CAPSICUM
|
|
#include <capsicum_helpers.h>
|
|
#endif
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <stdbool.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <assert.h>
|
|
#include <pthread.h>
|
|
#include <libgen.h>
|
|
#include <sysexits.h>
|
|
|
|
#include "bhyverun.h"
|
|
#include "pci_emul.h"
|
|
#include "virtio.h"
|
|
#include "mevent.h"
|
|
#include "sockstream.h"
|
|
|
|
#define VTCON_RINGSZ 64
|
|
#define VTCON_MAXPORTS 16
|
|
#define VTCON_MAXQ (VTCON_MAXPORTS * 2 + 2)
|
|
|
|
#define VTCON_DEVICE_READY 0
|
|
#define VTCON_DEVICE_ADD 1
|
|
#define VTCON_DEVICE_REMOVE 2
|
|
#define VTCON_PORT_READY 3
|
|
#define VTCON_CONSOLE_PORT 4
|
|
#define VTCON_CONSOLE_RESIZE 5
|
|
#define VTCON_PORT_OPEN 6
|
|
#define VTCON_PORT_NAME 7
|
|
|
|
#define VTCON_F_SIZE 0
|
|
#define VTCON_F_MULTIPORT 1
|
|
#define VTCON_F_EMERG_WRITE 2
|
|
#define VTCON_S_HOSTCAPS \
|
|
(VTCON_F_SIZE | VTCON_F_MULTIPORT | VTCON_F_EMERG_WRITE)
|
|
|
|
static int pci_vtcon_debug;
|
|
#define DPRINTF(params) if (pci_vtcon_debug) printf params
|
|
#define WPRINTF(params) printf params
|
|
|
|
struct pci_vtcon_softc;
|
|
struct pci_vtcon_port;
|
|
struct pci_vtcon_config;
|
|
typedef void (pci_vtcon_cb_t)(struct pci_vtcon_port *, void *, struct iovec *,
|
|
int);
|
|
|
|
struct pci_vtcon_port {
|
|
struct pci_vtcon_softc * vsp_sc;
|
|
int vsp_id;
|
|
const char * vsp_name;
|
|
bool vsp_enabled;
|
|
bool vsp_console;
|
|
bool vsp_rx_ready;
|
|
bool vsp_open;
|
|
int vsp_rxq;
|
|
int vsp_txq;
|
|
void * vsp_arg;
|
|
pci_vtcon_cb_t * vsp_cb;
|
|
};
|
|
|
|
struct pci_vtcon_sock
|
|
{
|
|
struct pci_vtcon_port * vss_port;
|
|
const char * vss_path;
|
|
struct mevent * vss_server_evp;
|
|
struct mevent * vss_conn_evp;
|
|
int vss_server_fd;
|
|
int vss_conn_fd;
|
|
bool vss_open;
|
|
};
|
|
|
|
struct pci_vtcon_softc {
|
|
struct virtio_softc vsc_vs;
|
|
struct vqueue_info vsc_queues[VTCON_MAXQ];
|
|
pthread_mutex_t vsc_mtx;
|
|
uint64_t vsc_cfg;
|
|
uint64_t vsc_features;
|
|
char * vsc_rootdir;
|
|
int vsc_kq;
|
|
int vsc_nports;
|
|
bool vsc_ready;
|
|
struct pci_vtcon_port vsc_control_port;
|
|
struct pci_vtcon_port vsc_ports[VTCON_MAXPORTS];
|
|
struct pci_vtcon_config *vsc_config;
|
|
};
|
|
|
|
struct pci_vtcon_config {
|
|
uint16_t cols;
|
|
uint16_t rows;
|
|
uint32_t max_nr_ports;
|
|
uint32_t emerg_wr;
|
|
} __attribute__((packed));
|
|
|
|
struct pci_vtcon_control {
|
|
uint32_t id;
|
|
uint16_t event;
|
|
uint16_t value;
|
|
} __attribute__((packed));
|
|
|
|
struct pci_vtcon_console_resize {
|
|
uint16_t cols;
|
|
uint16_t rows;
|
|
} __attribute__((packed));
|
|
|
|
static void pci_vtcon_reset(void *);
|
|
static void pci_vtcon_notify_rx(void *, struct vqueue_info *);
|
|
static void pci_vtcon_notify_tx(void *, struct vqueue_info *);
|
|
static int pci_vtcon_cfgread(void *, int, int, uint32_t *);
|
|
static int pci_vtcon_cfgwrite(void *, int, int, uint32_t);
|
|
static void pci_vtcon_neg_features(void *, uint64_t);
|
|
static void pci_vtcon_sock_accept(int, enum ev_type, void *);
|
|
static void pci_vtcon_sock_rx(int, enum ev_type, void *);
|
|
static void pci_vtcon_sock_tx(struct pci_vtcon_port *, void *, struct iovec *,
|
|
int);
|
|
static void pci_vtcon_control_send(struct pci_vtcon_softc *,
|
|
struct pci_vtcon_control *, const void *, size_t);
|
|
static void pci_vtcon_announce_port(struct pci_vtcon_port *);
|
|
static void pci_vtcon_open_port(struct pci_vtcon_port *, bool);
|
|
|
|
static struct virtio_consts vtcon_vi_consts = {
|
|
"vtcon", /* our name */
|
|
VTCON_MAXQ, /* we support VTCON_MAXQ virtqueues */
|
|
sizeof(struct pci_vtcon_config), /* config reg size */
|
|
pci_vtcon_reset, /* reset */
|
|
NULL, /* device-wide qnotify */
|
|
pci_vtcon_cfgread, /* read virtio config */
|
|
pci_vtcon_cfgwrite, /* write virtio config */
|
|
pci_vtcon_neg_features, /* apply negotiated features */
|
|
VTCON_S_HOSTCAPS, /* our capabilities */
|
|
};
|
|
|
|
|
|
static void
|
|
pci_vtcon_reset(void *vsc)
|
|
{
|
|
struct pci_vtcon_softc *sc;
|
|
|
|
sc = vsc;
|
|
|
|
DPRINTF(("vtcon: device reset requested!\n"));
|
|
vi_reset_dev(&sc->vsc_vs);
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_neg_features(void *vsc, uint64_t negotiated_features)
|
|
{
|
|
struct pci_vtcon_softc *sc = vsc;
|
|
|
|
sc->vsc_features = negotiated_features;
|
|
}
|
|
|
|
static int
|
|
pci_vtcon_cfgread(void *vsc, int offset, int size, uint32_t *retval)
|
|
{
|
|
struct pci_vtcon_softc *sc = vsc;
|
|
void *ptr;
|
|
|
|
ptr = (uint8_t *)sc->vsc_config + offset;
|
|
memcpy(retval, ptr, size);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
pci_vtcon_cfgwrite(void *vsc, int offset, int size, uint32_t val)
|
|
{
|
|
|
|
return (0);
|
|
}
|
|
|
|
static inline struct pci_vtcon_port *
|
|
pci_vtcon_vq_to_port(struct pci_vtcon_softc *sc, struct vqueue_info *vq)
|
|
{
|
|
uint16_t num = vq->vq_num;
|
|
|
|
if (num == 0 || num == 1)
|
|
return (&sc->vsc_ports[0]);
|
|
|
|
if (num == 2 || num == 3)
|
|
return (&sc->vsc_control_port);
|
|
|
|
return (&sc->vsc_ports[(num / 2) - 1]);
|
|
}
|
|
|
|
static inline struct vqueue_info *
|
|
pci_vtcon_port_to_vq(struct pci_vtcon_port *port, bool tx_queue)
|
|
{
|
|
int qnum;
|
|
|
|
qnum = tx_queue ? port->vsp_txq : port->vsp_rxq;
|
|
return (&port->vsp_sc->vsc_queues[qnum]);
|
|
}
|
|
|
|
static struct pci_vtcon_port *
|
|
pci_vtcon_port_add(struct pci_vtcon_softc *sc, const char *name,
|
|
pci_vtcon_cb_t *cb, void *arg)
|
|
{
|
|
struct pci_vtcon_port *port;
|
|
|
|
if (sc->vsc_nports == VTCON_MAXPORTS) {
|
|
errno = EBUSY;
|
|
return (NULL);
|
|
}
|
|
|
|
port = &sc->vsc_ports[sc->vsc_nports++];
|
|
port->vsp_id = sc->vsc_nports - 1;
|
|
port->vsp_sc = sc;
|
|
port->vsp_name = name;
|
|
port->vsp_cb = cb;
|
|
port->vsp_arg = arg;
|
|
|
|
if (port->vsp_id == 0) {
|
|
/* port0 */
|
|
port->vsp_txq = 0;
|
|
port->vsp_rxq = 1;
|
|
} else {
|
|
port->vsp_txq = sc->vsc_nports * 2;
|
|
port->vsp_rxq = port->vsp_txq + 1;
|
|
}
|
|
|
|
port->vsp_enabled = true;
|
|
return (port);
|
|
}
|
|
|
|
static int
|
|
pci_vtcon_sock_add(struct pci_vtcon_softc *sc, const char *name,
|
|
const char *path)
|
|
{
|
|
struct pci_vtcon_sock *sock;
|
|
struct sockaddr_un sun;
|
|
char *pathcopy;
|
|
int s = -1, fd = -1, error = 0;
|
|
#ifndef WITHOUT_CAPSICUM
|
|
cap_rights_t rights;
|
|
#endif
|
|
|
|
sock = calloc(1, sizeof(struct pci_vtcon_sock));
|
|
if (sock == NULL) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
s = socket(AF_UNIX, SOCK_STREAM, 0);
|
|
if (s < 0) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
pathcopy = strdup(path);
|
|
if (pathcopy == NULL) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
fd = open(dirname(pathcopy), O_RDONLY | O_DIRECTORY);
|
|
if (fd < 0) {
|
|
free(pathcopy);
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
sun.sun_family = AF_UNIX;
|
|
sun.sun_len = sizeof(struct sockaddr_un);
|
|
strcpy(pathcopy, path);
|
|
strlcpy(sun.sun_path, basename(pathcopy), sizeof(sun.sun_path));
|
|
free(pathcopy);
|
|
|
|
if (bindat(fd, s, (struct sockaddr *)&sun, sun.sun_len) < 0) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (fcntl(s, F_SETFL, O_NONBLOCK) < 0) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
if (listen(s, 1) < 0) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
#ifndef WITHOUT_CAPSICUM
|
|
cap_rights_init(&rights, CAP_ACCEPT, CAP_EVENT, CAP_READ, CAP_WRITE);
|
|
if (caph_rights_limit(s, &rights) == -1)
|
|
errx(EX_OSERR, "Unable to apply rights for sandbox");
|
|
#endif
|
|
|
|
sock->vss_port = pci_vtcon_port_add(sc, name, pci_vtcon_sock_tx, sock);
|
|
if (sock->vss_port == NULL) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
sock->vss_open = false;
|
|
sock->vss_conn_fd = -1;
|
|
sock->vss_server_fd = s;
|
|
sock->vss_server_evp = mevent_add(s, EVF_READ, pci_vtcon_sock_accept,
|
|
sock);
|
|
|
|
if (sock->vss_server_evp == NULL) {
|
|
error = -1;
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
if (fd != -1)
|
|
close(fd);
|
|
|
|
if (error != 0 && s != -1)
|
|
close(s);
|
|
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_sock_accept(int fd __unused, enum ev_type t __unused, void *arg)
|
|
{
|
|
struct pci_vtcon_sock *sock = (struct pci_vtcon_sock *)arg;
|
|
int s;
|
|
|
|
s = accept(sock->vss_server_fd, NULL, NULL);
|
|
if (s < 0)
|
|
return;
|
|
|
|
if (sock->vss_open) {
|
|
close(s);
|
|
return;
|
|
}
|
|
|
|
sock->vss_open = true;
|
|
sock->vss_conn_fd = s;
|
|
sock->vss_conn_evp = mevent_add(s, EVF_READ, pci_vtcon_sock_rx, sock);
|
|
|
|
pci_vtcon_open_port(sock->vss_port, true);
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_sock_rx(int fd __unused, enum ev_type t __unused, void *arg)
|
|
{
|
|
struct pci_vtcon_port *port;
|
|
struct pci_vtcon_sock *sock = (struct pci_vtcon_sock *)arg;
|
|
struct vqueue_info *vq;
|
|
struct iovec iov;
|
|
static char dummybuf[2048];
|
|
int len, n;
|
|
uint16_t idx;
|
|
|
|
port = sock->vss_port;
|
|
vq = pci_vtcon_port_to_vq(port, true);
|
|
|
|
if (!sock->vss_open || !port->vsp_rx_ready) {
|
|
len = read(sock->vss_conn_fd, dummybuf, sizeof(dummybuf));
|
|
if (len == 0)
|
|
goto close;
|
|
|
|
return;
|
|
}
|
|
|
|
if (!vq_has_descs(vq)) {
|
|
len = read(sock->vss_conn_fd, dummybuf, sizeof(dummybuf));
|
|
vq_endchains(vq, 1);
|
|
if (len == 0)
|
|
goto close;
|
|
|
|
return;
|
|
}
|
|
|
|
do {
|
|
n = vq_getchain(vq, &idx, &iov, 1, NULL);
|
|
len = readv(sock->vss_conn_fd, &iov, n);
|
|
|
|
if (len == 0 || (len < 0 && errno == EWOULDBLOCK)) {
|
|
vq_retchain(vq);
|
|
vq_endchains(vq, 0);
|
|
if (len == 0)
|
|
goto close;
|
|
|
|
return;
|
|
}
|
|
|
|
vq_relchain(vq, idx, len);
|
|
} while (vq_has_descs(vq));
|
|
|
|
vq_endchains(vq, 1);
|
|
|
|
close:
|
|
mevent_delete_close(sock->vss_conn_evp);
|
|
sock->vss_conn_fd = -1;
|
|
sock->vss_open = false;
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_sock_tx(struct pci_vtcon_port *port, void *arg, struct iovec *iov,
|
|
int niov)
|
|
{
|
|
struct pci_vtcon_sock *sock;
|
|
int i, ret;
|
|
|
|
sock = (struct pci_vtcon_sock *)arg;
|
|
|
|
if (sock->vss_conn_fd == -1)
|
|
return;
|
|
|
|
for (i = 0; i < niov; i++) {
|
|
ret = stream_write(sock->vss_conn_fd, iov[i].iov_base,
|
|
iov[i].iov_len);
|
|
if (ret <= 0)
|
|
break;
|
|
}
|
|
|
|
if (ret <= 0) {
|
|
mevent_delete_close(sock->vss_conn_evp);
|
|
sock->vss_conn_fd = -1;
|
|
sock->vss_open = false;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_control_tx(struct pci_vtcon_port *port, void *arg, struct iovec *iov,
|
|
int niov)
|
|
{
|
|
struct pci_vtcon_softc *sc;
|
|
struct pci_vtcon_port *tmp;
|
|
struct pci_vtcon_control resp, *ctrl;
|
|
int i;
|
|
|
|
assert(niov == 1);
|
|
|
|
sc = port->vsp_sc;
|
|
ctrl = (struct pci_vtcon_control *)iov->iov_base;
|
|
|
|
switch (ctrl->event) {
|
|
case VTCON_DEVICE_READY:
|
|
sc->vsc_ready = true;
|
|
/* set port ready events for registered ports */
|
|
for (i = 0; i < VTCON_MAXPORTS; i++) {
|
|
tmp = &sc->vsc_ports[i];
|
|
if (tmp->vsp_enabled)
|
|
pci_vtcon_announce_port(tmp);
|
|
|
|
if (tmp->vsp_open)
|
|
pci_vtcon_open_port(tmp, true);
|
|
}
|
|
break;
|
|
|
|
case VTCON_PORT_READY:
|
|
if (ctrl->id >= sc->vsc_nports) {
|
|
WPRINTF(("VTCON_PORT_READY event for unknown port %d\n",
|
|
ctrl->id));
|
|
return;
|
|
}
|
|
|
|
tmp = &sc->vsc_ports[ctrl->id];
|
|
if (tmp->vsp_console) {
|
|
resp.event = VTCON_CONSOLE_PORT;
|
|
resp.id = ctrl->id;
|
|
resp.value = 1;
|
|
pci_vtcon_control_send(sc, &resp, NULL, 0);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_announce_port(struct pci_vtcon_port *port)
|
|
{
|
|
struct pci_vtcon_control event;
|
|
|
|
event.id = port->vsp_id;
|
|
event.event = VTCON_DEVICE_ADD;
|
|
event.value = 1;
|
|
pci_vtcon_control_send(port->vsp_sc, &event, NULL, 0);
|
|
|
|
event.event = VTCON_PORT_NAME;
|
|
pci_vtcon_control_send(port->vsp_sc, &event, port->vsp_name,
|
|
strlen(port->vsp_name));
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_open_port(struct pci_vtcon_port *port, bool open)
|
|
{
|
|
struct pci_vtcon_control event;
|
|
|
|
if (!port->vsp_sc->vsc_ready) {
|
|
port->vsp_open = true;
|
|
return;
|
|
}
|
|
|
|
event.id = port->vsp_id;
|
|
event.event = VTCON_PORT_OPEN;
|
|
event.value = (int)open;
|
|
pci_vtcon_control_send(port->vsp_sc, &event, NULL, 0);
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_control_send(struct pci_vtcon_softc *sc,
|
|
struct pci_vtcon_control *ctrl, const void *payload, size_t len)
|
|
{
|
|
struct vqueue_info *vq;
|
|
struct iovec iov;
|
|
uint16_t idx;
|
|
int n;
|
|
|
|
vq = pci_vtcon_port_to_vq(&sc->vsc_control_port, true);
|
|
|
|
if (!vq_has_descs(vq))
|
|
return;
|
|
|
|
n = vq_getchain(vq, &idx, &iov, 1, NULL);
|
|
|
|
assert(n == 1);
|
|
|
|
memcpy(iov.iov_base, ctrl, sizeof(struct pci_vtcon_control));
|
|
if (payload != NULL && len > 0)
|
|
memcpy(iov.iov_base + sizeof(struct pci_vtcon_control),
|
|
payload, len);
|
|
|
|
vq_relchain(vq, idx, sizeof(struct pci_vtcon_control) + len);
|
|
vq_endchains(vq, 1);
|
|
}
|
|
|
|
|
|
static void
|
|
pci_vtcon_notify_tx(void *vsc, struct vqueue_info *vq)
|
|
{
|
|
struct pci_vtcon_softc *sc;
|
|
struct pci_vtcon_port *port;
|
|
struct iovec iov[1];
|
|
uint16_t idx, n;
|
|
uint16_t flags[8];
|
|
|
|
sc = vsc;
|
|
port = pci_vtcon_vq_to_port(sc, vq);
|
|
|
|
while (vq_has_descs(vq)) {
|
|
n = vq_getchain(vq, &idx, iov, 1, flags);
|
|
assert(n >= 1);
|
|
if (port != NULL)
|
|
port->vsp_cb(port, port->vsp_arg, iov, 1);
|
|
|
|
/*
|
|
* Release this chain and handle more
|
|
*/
|
|
vq_relchain(vq, idx, 0);
|
|
}
|
|
vq_endchains(vq, 1); /* Generate interrupt if appropriate. */
|
|
}
|
|
|
|
static void
|
|
pci_vtcon_notify_rx(void *vsc, struct vqueue_info *vq)
|
|
{
|
|
struct pci_vtcon_softc *sc;
|
|
struct pci_vtcon_port *port;
|
|
|
|
sc = vsc;
|
|
port = pci_vtcon_vq_to_port(sc, vq);
|
|
|
|
if (!port->vsp_rx_ready) {
|
|
port->vsp_rx_ready = 1;
|
|
vq_kick_disable(vq);
|
|
}
|
|
}
|
|
|
|
static int
|
|
pci_vtcon_init(struct vmctx *ctx, struct pci_devinst *pi, char *opts)
|
|
{
|
|
struct pci_vtcon_softc *sc;
|
|
char *portname = NULL;
|
|
char *portpath = NULL;
|
|
char *opt;
|
|
int i;
|
|
|
|
sc = calloc(1, sizeof(struct pci_vtcon_softc));
|
|
sc->vsc_config = calloc(1, sizeof(struct pci_vtcon_config));
|
|
sc->vsc_config->max_nr_ports = VTCON_MAXPORTS;
|
|
sc->vsc_config->cols = 80;
|
|
sc->vsc_config->rows = 25;
|
|
|
|
vi_softc_linkup(&sc->vsc_vs, &vtcon_vi_consts, sc, pi, sc->vsc_queues);
|
|
sc->vsc_vs.vs_mtx = &sc->vsc_mtx;
|
|
|
|
for (i = 0; i < VTCON_MAXQ; i++) {
|
|
sc->vsc_queues[i].vq_qsize = VTCON_RINGSZ;
|
|
sc->vsc_queues[i].vq_notify = i % 2 == 0
|
|
? pci_vtcon_notify_rx
|
|
: pci_vtcon_notify_tx;
|
|
}
|
|
|
|
/* initialize config space */
|
|
pci_set_cfgdata16(pi, PCIR_DEVICE, VIRTIO_DEV_CONSOLE);
|
|
pci_set_cfgdata16(pi, PCIR_VENDOR, VIRTIO_VENDOR);
|
|
pci_set_cfgdata8(pi, PCIR_CLASS, PCIC_SIMPLECOMM);
|
|
pci_set_cfgdata16(pi, PCIR_SUBDEV_0, VIRTIO_TYPE_CONSOLE);
|
|
pci_set_cfgdata16(pi, PCIR_SUBVEND_0, VIRTIO_VENDOR);
|
|
|
|
if (vi_intr_init(&sc->vsc_vs, 1, fbsdrun_virtio_msix()))
|
|
return (1);
|
|
vi_set_io_bar(&sc->vsc_vs, 0);
|
|
|
|
/* create control port */
|
|
sc->vsc_control_port.vsp_sc = sc;
|
|
sc->vsc_control_port.vsp_txq = 2;
|
|
sc->vsc_control_port.vsp_rxq = 3;
|
|
sc->vsc_control_port.vsp_cb = pci_vtcon_control_tx;
|
|
sc->vsc_control_port.vsp_enabled = true;
|
|
|
|
while ((opt = strsep(&opts, ",")) != NULL) {
|
|
portname = strsep(&opt, "=");
|
|
portpath = opt;
|
|
|
|
/* create port */
|
|
if (pci_vtcon_sock_add(sc, portname, portpath) < 0) {
|
|
fprintf(stderr, "cannot create port %s: %s\n",
|
|
portname, strerror(errno));
|
|
return (1);
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
struct pci_devemu pci_de_vcon = {
|
|
.pe_emu = "virtio-console",
|
|
.pe_init = pci_vtcon_init,
|
|
.pe_barwrite = vi_pci_write,
|
|
.pe_barread = vi_pci_read
|
|
};
|
|
PCI_EMUL_SET(pci_de_vcon);
|