1 /*-
2 * Copyright (c) 2006 The FreeBSD Project
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, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/9.1/sys/dev/tdfx/tdfx_linux.c 224778 2011-08-11 12:30:23Z rwatson $");
29
30 #include <sys/param.h>
31 #include <sys/capability.h>
32 #include <sys/file.h>
33 #include <sys/kernel.h>
34 #include <sys/module.h>
35 #include <sys/proc.h>
36 #include <sys/systm.h>
37
38 #include <dev/tdfx/tdfx_linux.h>
39
40 LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX);
41
42 /*
43 * Linux emulation IOCTL for /dev/tdfx
44 */
45 static int
46 linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args)
47 {
48 int error = 0;
49 u_long cmd = args->cmd & 0xffff;
50
51 /* The structure passed to ioctl has two shorts, one int
52 and one void*. */
53 char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)];
54
55 struct file *fp;
56
57 if ((error = fget(td, args->fd, CAP_IOCTL, &fp)) != 0)
58 return (error);
59 /* We simply copy the data and send it right to ioctl */
60 copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio));
61 error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td);
62 fdrop(fp, td);
63 return error;
64 }
65
66 static int
67 tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused)
68 {
69
70 switch (what) {
71 case MOD_LOAD:
72 case MOD_UNLOAD:
73 return (0);
74 }
75 return (EOPNOTSUPP);
76 }
77
78 static moduledata_t tdfx_linux_mod = {
79 "tdfx_linux",
80 tdfx_linux_modevent,
81 0
82 };
83
84 /* As in SYSCALL_MODULE */
85 DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
86 MODULE_VERSION(tdfx_linux, 1);
87 MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1);
88 MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1);
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