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