1 /*-
2 * Copyright (c) 2006 IronPort Systems
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/mfi/mfi_linux.c 234429 2012-04-18 18:31:11Z ambrisko $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/capability.h>
33 #include <sys/conf.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/file.h>
37 #include <sys/proc.h>
38 #include <machine/bus.h>
39
40 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
41 #include <machine/../linux32/linux.h>
42 #include <machine/../linux32/linux32_proto.h>
43 #else
44 #include <machine/../linux/linux.h>
45 #include <machine/../linux/linux_proto.h>
46 #endif
47 #include <compat/linux/linux_ioctl.h>
48 #include <compat/linux/linux_util.h>
49
50 #include <dev/mfi/mfireg.h>
51 #include <dev/mfi/mfi_ioctl.h>
52
53 /* There are multiple ioctl number ranges that need to be handled */
54 #define MFI_LINUX_IOCTL_MIN 0x4d00
55 #define MFI_LINUX_IOCTL_MAX 0x4d04
56
57 static linux_ioctl_function_t mfi_linux_ioctl;
58 static struct linux_ioctl_handler mfi_linux_handler = {mfi_linux_ioctl,
59 MFI_LINUX_IOCTL_MIN,
60 MFI_LINUX_IOCTL_MAX};
61
62 SYSINIT (mfi_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
63 linux_ioctl_register_handler, &mfi_linux_handler);
64 SYSUNINIT(mfi_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
65 linux_ioctl_unregister_handler, &mfi_linux_handler);
66
67 static struct linux_device_handler mfi_device_handler =
68 { "mfi", "megaraid_sas", "mfi0", "megaraid_sas_ioctl_node", -1, 0, 1};
69
70 SYSINIT (mfi_register2, SI_SUB_KLD, SI_ORDER_MIDDLE,
71 linux_device_register_handler, &mfi_device_handler);
72 SYSUNINIT(mfi_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
73 linux_device_unregister_handler, &mfi_device_handler);
74
75 static int
76 mfi_linux_modevent(module_t mod, int cmd, void *data)
77 {
78 return (0);
79 }
80
81 DEV_MODULE(mfi_linux, mfi_linux_modevent, NULL);
82 MODULE_DEPEND(mfi, linux, 1, 1, 1);
83
84 static int
85 mfi_linux_ioctl(struct thread *p, struct linux_ioctl_args *args)
86 {
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 if ((error = fget(p, args->fd, CAP_IOCTL, &fp)) != 0)
101 return (error);
102 error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p);
103 fdrop(fp, p);
104 return (error);
105 }
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