1/*-
2 * Copyright (c) 2009 IronPort Systems Inc. <ambrisko@ironport.com>
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("$FreeBSD$");
29
30/*
31 * Linux ioctl handler for the ipmi device driver
32 */
33
34#include <sys/param.h>
35#include <sys/systm.h>
36#include <sys/capsicum.h>
37#include <sys/conf.h>
38#include <sys/kernel.h>
39#include <sys/module.h>
40#include <sys/file.h>
41#include <sys/proc.h>
42#ifdef __amd64__
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 <sys/ioccom.h>
51#include <sys/ipmi.h>
52
53/* There are multiple ioctl number ranges that need to be handled */
54#define IPMI_LINUX_IOCTL_MIN  0x690b
55#define IPMI_LINUX_IOCTL_MAX  0x6915
56
57/* Linux versions of ioctl's */
58#define L_IPMICTL_RECEIVE_MSG_TRUNC       _IOWR(IPMI_IOC_MAGIC, 11, struct ipmi_recv)
59#define L_IPMICTL_RECEIVE_MSG             _IOWR(IPMI_IOC_MAGIC, 12, struct ipmi_recv)
60#define L_IPMICTL_SEND_COMMAND            _IOW(IPMI_IOC_MAGIC, 13, struct ipmi_req)
61#define L_IPMICTL_REGISTER_FOR_CMD        _IOW(IPMI_IOC_MAGIC, 14, struct ipmi_cmdspec)
62#define L_IPMICTL_UNREGISTER_FOR_CMD      _IOW(IPMI_IOC_MAGIC, 15, struct ipmi_cmdspec)
63#define L_IPMICTL_SET_GETS_EVENTS_CMD     _IOW(IPMI_IOC_MAGIC, 16, int)
64#define L_IPMICTL_SET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 17, unsigned int)
65#define L_IPMICTL_GET_MY_ADDRESS_CMD      _IOW(IPMI_IOC_MAGIC, 18, unsigned int)
66#define L_IPMICTL_SET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 19, unsigned int)
67#define L_IPMICTL_GET_MY_LUN_CMD          _IOW(IPMI_IOC_MAGIC, 20, unsigned int)
68
69static linux_ioctl_function_t ipmi_linux_ioctl;
70static struct linux_ioctl_handler ipmi_linux_handler = {ipmi_linux_ioctl,
71						       IPMI_LINUX_IOCTL_MIN,
72						       IPMI_LINUX_IOCTL_MAX};
73
74SYSINIT  (ipmi_linux_register,   SI_SUB_KLD, SI_ORDER_MIDDLE,
75	  linux_ioctl_register_handler, &ipmi_linux_handler);
76SYSUNINIT(ipmi_linux_unregister, SI_SUB_KLD, SI_ORDER_MIDDLE,
77	  linux_ioctl_unregister_handler, &ipmi_linux_handler);
78
79static int
80ipmi_linux_modevent(module_t mod, int type, void *data)
81{
82	/* Do we care about any specific load/unload actions? */
83	return (0);
84}
85
86DEV_MODULE(ipmi_linux, ipmi_linux_modevent, NULL);
87MODULE_DEPEND(ipmi_linux, linux, 1, 1, 1);
88
89static int
90ipmi_linux_ioctl(struct thread *td, struct linux_ioctl_args *args)
91{
92	cap_rights_t rights;
93	struct file *fp;
94	u_long cmd;
95	int error;
96
97	error = fget(td, args->fd, cap_rights_init(&rights, CAP_IOCTL), &fp);
98	if (error != 0)
99		return (error);
100	cmd = args->cmd;
101
102	switch(cmd) {
103	case L_IPMICTL_GET_MY_ADDRESS_CMD:
104		cmd = IPMICTL_GET_MY_ADDRESS_CMD;
105		break;
106	case L_IPMICTL_GET_MY_LUN_CMD:
107		cmd = IPMICTL_GET_MY_LUN_CMD;
108		break;
109	}
110	/*
111	 * Pass the ioctl off to our standard handler.
112	 */
113	error = (fo_ioctl(fp, cmd, (caddr_t)args->arg, td->td_ucred, td));
114	fdrop(fp, td);
115	return (error);
116}
117