1 /*-
2 * Copyright (c) 2006, Max Laier <mlaier@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
10 * disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD: src/share/examples/kld/firmware/fwconsumer/fw_consumer.c,v 1.2 2010/01/18 22:59:53 wkoszek Exp $
27 */
28
29 #include <sys/param.h>
30 #include <sys/kernel.h>
31 #include <sys/errno.h>
32 #include <sys/systm.h>
33 #include <sys/linker.h>
34 #include <sys/firmware.h>
35 #include <sys/proc.h>
36 #include <sys/module.h>
37
38 static const struct firmware *fp;
39
40 static int
fw_consumer_modevent(module_t mod,int type,void * unused)41 fw_consumer_modevent(module_t mod, int type, void *unused)
42 {
43 switch (type) {
44 case MOD_LOAD:
45 fp = firmware_get("beastie");
46
47 if (fp == NULL)
48 return (ENOENT);
49
50 if (((const char *)fp->data)[fp->datasize - 1] != '\0') {
51 firmware_put(fp, FIRMWARE_UNLOAD);
52 return (EINVAL);
53 }
54 kprintf("%s", (const char *)fp->data);
55
56 return (0);
57 case MOD_UNLOAD:
58 kprintf("Bye!\n");
59
60 if (fp != NULL) {
61 kprintf("%s", (const char *)fp->data);
62 firmware_put(fp, FIRMWARE_UNLOAD);
63 }
64
65 return (0);
66 }
67 return (EINVAL);
68 }
69
70 static moduledata_t fw_consumer_mod = {
71 "fw_consumer",
72 fw_consumer_modevent,
73 0
74 };
75 DECLARE_MODULE(fw_consumer, fw_consumer_mod, SI_SUB_DRIVERS, SI_ORDER_ANY);
76 MODULE_VERSION(fw_consumer, 1);
77 MODULE_DEPEND(fw_consumer, firmware, 1, 1, 1);
78