1 /*
2 * Copyright (c) 2015, AVAGO Tech. All rights reserved. Author: Kashyap Desai,
3 * Copyright (c) 2014, LSI Corp. All rights reserved. Author: Kashyap Desai,
4 * Sibananda Sahu Support: freebsdraid@avagotech.com
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are
8 * met:
9 *
10 * 1. Redistributions of source code must retain the above copyright notice,
11 * this list of conditions and the following disclaimer. 2. Redistributions
12 * in binary form must reproduce the above copyright notice, this list of
13 * conditions and the following disclaimer in the documentation and/or other
14 * materials provided with the distribution. 3. Neither the name of the
15 * <ORGANIZATION> nor the names of its contributors may be used to endorse or
16 * promote products derived from this software without specific prior written
17 * permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 *
31 * The views and conclusions contained in the software and documentation are
32 * those of the authors and should not be interpreted as representing
33 * official policies,either expressed or implied, of the FreeBSD Project.
34 *
35 * Send feedback to: <megaraidfbsd@avagotech.com> Mail to: AVAGO TECHNOLOGIES, 1621
36 * Barber Lane, Milpitas, CA 95035 ATTN: MegaRaid FreeBSD
37 *
38 */
39
40 #include <sys/param.h>
41 #include <sys/systm.h>
42
43 #include <sys/capsicum.h>
44
45 #include <sys/conf.h>
46 #include <sys/kernel.h>
47 #include <sys/module.h>
48 #include <sys/file.h>
49 #include <sys/proc.h>
50 #include <machine/bus.h>
51
52 #if defined(__amd64__) /* Assume amd64 wants 32 bit Linux */
53 #include <machine/../linux32/linux.h>
54 #include <machine/../linux32/linux32_proto.h>
55 #else
56 #include <machine/../linux/linux.h>
57 #include <machine/../linux/linux_proto.h>
58 #endif
59 #include <compat/linux/linux_ioctl.h>
60 #include <compat/linux/linux_util.h>
61
62 #include <dev/mrsas/mrsas.h>
63 #undef COMPAT_FREEBSD32
64 #include <dev/mrsas/mrsas_ioctl.h>
65
66 /* There are multiple ioctl number ranges that need to be handled */
67 #define MRSAS_LINUX_IOCTL_MIN 0x4d00
68 #define MRSAS_LINUX_IOCTL_MAX 0x4d01
69
70 static linux_ioctl_function_t mrsas_linux_ioctl;
71 static struct linux_ioctl_handler mrsas_linux_handler = {mrsas_linux_ioctl,
72 MRSAS_LINUX_IOCTL_MIN,
73 MRSAS_LINUX_IOCTL_MAX};
74
75 SYSINIT(mrsas_register, SI_SUB_KLD, SI_ORDER_MIDDLE,
76 linux_ioctl_register_handler, &mrsas_linux_handler);
77 SYSUNINIT(mrsas_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
78 linux_ioctl_unregister_handler, &mrsas_linux_handler);
79
80 static struct linux_device_handler mrsas_device_handler =
81 {"mrsas", "megaraid_sas", "mrsas0", "megaraid_sas_ioctl_node", -1, 0, 1};
82
83 SYSINIT(mrsas_register2, SI_SUB_KLD, SI_ORDER_MIDDLE,
84 linux_device_register_handler, &mrsas_device_handler);
85 SYSUNINIT(mrsas_unregister2, SI_SUB_KLD, SI_ORDER_MIDDLE,
86 linux_device_unregister_handler, &mrsas_device_handler);
87
88 static int
mrsas_linux_modevent(module_t mod __unused,int cmd __unused,void * data __unused)89 mrsas_linux_modevent(module_t mod __unused, int cmd __unused, void *data __unused)
90 {
91 return (0);
92 }
93
94 /*
95 * mrsas_linux_ioctl: linux emulator IOCtl commands entry point.
96 *
97 * This function is the entry point for IOCtls from linux binaries.
98 * It calls the mrsas_ioctl function for processing
99 * depending on the IOCTL command received.
100 */
101 static int
mrsas_linux_ioctl(struct thread * p,struct linux_ioctl_args * args)102 mrsas_linux_ioctl(struct thread *p, struct linux_ioctl_args *args)
103 {
104 cap_rights_t rights;
105 struct file *fp;
106 int error;
107 u_long cmd = args->cmd;
108
109 if (cmd != MRSAS_LINUX_CMD32) {
110 error = ENOTSUP;
111 goto END;
112 }
113 error = fget(p, args->fd, cap_rights_init_one(&rights, CAP_IOCTL), &fp);
114 if (error != 0)
115 goto END;
116
117 error = fo_ioctl(fp, cmd, (caddr_t)args->arg, p->td_ucred, p);
118 fdrop(fp, p);
119 END:
120 return (error);
121 }
122
123 DEV_MODULE(mrsas_linux, mrsas_linux_modevent, NULL);
124 MODULE_DEPEND(mrsas, linux, 1, 1, 1);
125