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/* $NetBSD: usbd.c,v 1.4 1998/12/09 00:57:19 augustss Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@netbsd.org).
*
* 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.
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/time.h>
#if defined(__FreeBSD__)
#include <sys/ioctl.h>
#endif
#include <dev/usb/usb.h>
/* the name of the device spitting out usb attach/detach events as well as
* the prefix for the individual busses (used as a semi kernel thread).
*/
#define USBDEV "/dev/usb"
/* Maximum number of USB busses expected to be in a system
*/
#define MAXUSBDEV 4
/*
* Sometimes a device does not respond in time for interrupt
* driven explore to find it. Therefore we run an exploration
* at regular intervals to catch those.
*/
#define TIMEOUT 30
extern char *__progname;
void usage(void);
void
usage(void)
{
fprintf(stderr, "Usage: %s [-d] [-e] [-f dev] [-t timeout] [-v]\n",
__progname);
fprintf(stderr, " -d for debugging\n");
fprintf(stderr, " -e only do 1 explore\n");
fprintf(stderr, " -f dev for example /dev/usb0, "
"and can be specified multiple times.");
fprintf(stderr, " -t timeout timeout between explores\n");
fprintf(stderr, " -v verbose output\n");
exit(1);
}
int
main(int argc, char **argv)
{
int error, i;
int ch; /* getopt option */
extern char *optarg; /* from getopt */
extern int optind; /* from getopt */
char *devs[MAXUSBDEV]; /* device names */
int ndevs = 0; /* number of devices found */
int verbose = 0; /* print message on what it is doing */
int debug = 0; /* print debugging output */
int explore = 0; /* don't do only explore */
int maxfd; /* maximum fd in use */
char buf[50]; /* for creation of the filename */
int fds[MAXUSBDEV]; /* open filedescriptors */
fd_set fdset;
int itimo = TIMEOUT; /* timeout for select */
struct timeval timo;
while ((ch = getopt(argc, argv, "def:t:v")) != -1) {
switch(ch) {
case 'd':
debug++;
break;
case 'e':
explore++;
break;
case 'f':
if (ndevs < MAXUSBDEV)
devs[ndevs++] = optarg;
break;
case 't':
itimo = atoi(optarg);
break;
case 'v':
verbose++;
break;
case '?':
default:
usage();
}
}
argc -= optind;
argv += optind;
/* open all the files /dev/usb\d+ or specified with -f */
maxfd = 0;
if (ndevs == 0) {
for (i = 0; i < MAXUSBDEV; i++) {
sprintf(buf, "%s%d", USBDEV, i);
fds[ndevs] = open(buf, O_RDWR);
if (fds[ndevs] >= 0) {
devs[ndevs] = strdup(buf);
if (verbose)
printf("%s: opening %s\n",
__progname, devs[ndevs]);
if (fds[ndevs] > maxfd)
maxfd = fds[ndevs];
ndevs++;
}
}
} else {
for (i = 0; i < ndevs; i++) {
fds[i] = open(devs[i], O_RDWR);
if (fds[i] < 0)
err(1, "%s", devs[i]);
else if (fds[i] > maxfd)
maxfd = fds[i];
}
}
if (ndevs == 0) {
fprintf(stderr, "No USB host controllers found\n");
exit(1);
}
/* Do the explore once and exit */
if (explore) {
for (i = 0; i < ndevs; i++) {
error = ioctl(fds[i], USB_DISCOVER);
if (error < 0)
err(1, "USB_DISCOVER");
}
exit(0);
}
/* move to the background */
if (!debug)
daemon(0, 0);
/* start select on all the open file descriptors */
for (;;) {
FD_ZERO(&fdset);
for (i = 0; i < ndevs; i++)
FD_SET(fds[i], &fdset);
timo.tv_usec = 0;
timo.tv_sec = itimo;
error = select(maxfd+1, 0, &fdset, 0, itimo ? &timo : 0);
if (error < 0)
warn("select failed\n");
for (i = 0; i < ndevs; i++)
if (error == 0 || FD_ISSET(fds[i], &fdset)) {
if (verbose)
printf("%s: doing %sdiscovery on %s\n",
__progname,
(error? "":"timeout "), devs[i]);
if (ioctl(fds[i], USB_DISCOVER) < 0)
err(1, "USB_DISCOVER");
}
}
}
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