1/*-
2 * Copyright (c) 2007 Scott Long
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 */
25
26#include <sys/types.h>
27#include <sys/fcntl.h>
28#include <sys/ioctl.h>
29#include <sys/uio.h>
30
31#include </sys/dev/mfi/mfireg.h>
32#include </sys/dev/mfi/mfi_ioctl.h>
33
34#include <errno.h>
35#include <stdio.h>
36
37/*
38 * Simple program to print out the queue stats on the given queue index.
39 * See /sys/sys/mfi_ioctl.h for the definitions of each queue index.
40 */
41
42void
43usage(void)
44{
45	printf("Usage: mfi_checkq <queue_number>\n");
46	exit(1);
47}
48
49int
50main(int argc, char **argv)
51{
52	union mfi_statrequest sr;
53	int fd, retval, queue;
54
55	if (argc != 2)
56		usage();
57
58	fd = open("/dev/mfi0", O_RDWR);
59	if (fd == -1) {
60		printf("couldn't open mfi0: %s\n", strerror(errno));
61		return (-1);
62	}
63
64	queue = atoi(argv[1]);
65	printf("Getting stats for queue %d\n", queue);
66	bzero(&sr, sizeof(union mfi_statrequest));
67	sr.ms_item = queue;
68	retval = ioctl(fd, MFIIO_STATS, &sr);
69	if (retval == -1) {
70		printf("error on ioctl: %s\n", strerror(errno));
71		return (-1);
72	}
73
74	printf("length= %d, max= %d\n",sr.ms_qstat.q_length, sr.ms_qstat.q_max);
75
76	close(fd);
77	return 0;
78}
79