1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2006 The FreeBSD Project
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD$");
31
32#include <sys/param.h>
33#include <sys/capsicum.h>
34#include <sys/file.h>
35#include <sys/kernel.h>
36#include <sys/module.h>
37#include <sys/proc.h>
38#include <sys/systm.h>
39
40#include <dev/tdfx/tdfx_linux.h>
41
42LINUX_IOCTL_SET(tdfx, LINUX_IOCTL_TDFX_MIN, LINUX_IOCTL_TDFX_MAX);
43
44/*
45 * Linux emulation IOCTL for /dev/tdfx
46 */
47static int
48linux_ioctl_tdfx(struct thread *td, struct linux_ioctl_args* args)
49{
50   cap_rights_t rights;
51   int error = 0;
52   u_long cmd = args->cmd & 0xffff;
53
54   /* The structure passed to ioctl has two shorts, one int
55      and one void*. */
56   char d_pio[2*sizeof(short) + sizeof(int) + sizeof(void*)];
57
58   struct file *fp;
59
60   error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
61   if (error != 0)
62	   return (error);
63   /* We simply copy the data and send it right to ioctl */
64   copyin((caddr_t)args->arg, &d_pio, sizeof(d_pio));
65   error = fo_ioctl(fp, cmd, (caddr_t)&d_pio, td->td_ucred, td);
66   fdrop(fp, td);
67   return error;
68}
69
70static int
71tdfx_linux_modevent(struct module *mod __unused, int what, void *arg __unused)
72{
73
74	switch (what) {
75	case MOD_LOAD:
76	case MOD_UNLOAD:
77		return (0);
78	}
79	return (EOPNOTSUPP);
80}
81
82static moduledata_t tdfx_linux_mod = {
83	"tdfx_linux",
84	tdfx_linux_modevent,
85	0
86};
87
88/* As in SYSCALL_MODULE */
89DECLARE_MODULE(tdfx_linux, tdfx_linux_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
90MODULE_VERSION(tdfx_linux, 1);
91MODULE_DEPEND(tdfx_linux, tdfx, 1, 1, 1);
92MODULE_DEPEND(tdfx_linux, linux, 1, 1, 1);
93