1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2006 IronPort Systems
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/systm.h>
34#include <sys/capsicum.h>
35#include <sys/conf.h>
36#include <sys/kernel.h>
37#include <sys/module.h>
38#include <sys/file.h>
39#include <sys/proc.h>
40#include <machine/bus.h>
41
42#if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
43#include <machine/../linux32/linux.h>
44#include <machine/../linux32/linux32_proto.h>
45#else
46#include <machine/../linux/linux.h>
47#include <machine/../linux/linux_proto.h>
48#endif
49#include <compat/linux/linux_ioctl.h>
50#include <compat/linux/linux_util.h>
51
52#include <dev/mfi/mfireg.h>
53#include <dev/mfi/mfi_ioctl.h>
54
55/* There are multiple ioctl number ranges that need to be handled */
56#define MFI_LINUX_IOCTL_MIN  0x4d00
57#define MFI_LINUX_IOCTL_MAX  0x4d04
58
59static linux_ioctl_function_t mfi_linux_ioctl;
60static struct linux_ioctl_handler mfi_linux_handler = {mfi_linux_ioctl,
61						       MFI_LINUX_IOCTL_MIN,
62						       MFI_LINUX_IOCTL_MAX};
63
64SYSINIT  (mfi_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
65	  linux_ioctl_register_handler, &mfi_linux_handler);
66SYSUNINIT(mfi_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
67	  linux_ioctl_unregister_handler, &mfi_linux_handler);
68
69static struct linux_device_handler mfi_device_handler =
70	{ "mfi", "megaraid_sas", "mfi0", "megaraid_sas_ioctl_node", -1, 0, 1};
71
72SYSINIT  (mfi_register2,   SI_SUB_KLD, SI_ORDER_MIDDLE,
73	  linux_device_register_handler, &mfi_device_handler);
74SYSUNINIT(mfi_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
75	  linux_device_unregister_handler, &mfi_device_handler);
76
77static int
78mfi_linux_modevent(module_t mod, int cmd, void *data)
79{
80	return (0);
81}
82
83DEV_MODULE(mfi_linux, mfi_linux_modevent, NULL);
84MODULE_DEPEND(mfi, linux, 1, 1, 1);
85
86static int
87mfi_linux_ioctl(struct thread *p, struct linux_ioctl_args *args)
88{
89	cap_rights_t rights;
90	struct file *fp;
91	int error;
92	u_long cmd = args->cmd;
93
94	switch (cmd) {
95	case MFI_LINUX_CMD:
96		cmd = MFI_LINUX_CMD_2;
97		break;
98	case MFI_LINUX_SET_AEN:
99		cmd = MFI_LINUX_SET_AEN_2;
100		break;
101	}
102
103	error = fget(p, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
104	if (error != 0)
105		return (error);
106	error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p);
107	fdrop(fp, p);
108	return (error);
109}
110