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[FreeBSD/releng/10.0.git] / sys / dev / ipmi / ipmi_smbus.c
1 /*-
2  * Copyright (c) 2006 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 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/bus.h>
33 #include <sys/condvar.h>
34 #include <sys/eventhandler.h>
35 #include <sys/kernel.h>
36 #include <sys/module.h>
37 #include <sys/rman.h>
38 #include <sys/selinfo.h>
39
40 #include <dev/smbus/smbconf.h>
41 #include <dev/smbus/smbus.h>
42 #include <dev/smbus/smb.h>
43
44 #include "smbus_if.h"
45
46 #ifdef LOCAL_MODULE
47 #include <ipmivars.h>
48 #else
49 #include <dev/ipmi/ipmivars.h>
50 #endif
51
52 static void ipmi_smbus_identify(driver_t *driver, device_t parent);
53 static int ipmi_smbus_probe(device_t dev);
54 static int ipmi_smbus_attach(device_t dev);
55
56 static void
57 ipmi_smbus_identify(driver_t *driver, device_t parent)
58 {
59         struct ipmi_get_info info;
60
61         if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE &&
62             device_find_child(parent, "ipmi", -1) == NULL)
63                 BUS_ADD_CHILD(parent, 0, "ipmi", -1);
64 }
65
66 static int
67 ipmi_smbus_probe(device_t dev)
68 {
69
70         device_set_desc(dev, "IPMI System Interface");
71         return (BUS_PROBE_DEFAULT);
72 }
73
74 static int
75 ipmi_smbus_attach(device_t dev)
76 {
77         struct ipmi_softc *sc = device_get_softc(dev);
78         struct ipmi_get_info info;
79         int error;
80
81         /* This should never fail. */
82         if (!ipmi_smbios_identify(&info))
83                 return (ENXIO);
84
85         if (info.iface_type != SSIF_MODE) {
86                 device_printf(dev, "No SSIF IPMI interface found\n");
87                 return (ENXIO);
88         }
89
90         sc->ipmi_dev = dev;
91
92         if (info.irq != 0) {
93                 sc->ipmi_irq_rid = 0;
94                 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
95                     &sc->ipmi_irq_rid, info.irq, info.irq, 1,
96                     RF_SHAREABLE | RF_ACTIVE);
97         }
98
99         device_printf(dev, "SSIF mode found at address 0x%llx on %s\n",
100             (long long)info.address, device_get_name(device_get_parent(dev)));
101         error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address);
102         if (error)
103                 goto bad;
104
105         error = ipmi_attach(dev);
106         if (error)
107                 goto bad;
108
109         return (0);
110 bad:
111         ipmi_release_resources(dev);
112         return (error);
113 }
114
115 static device_method_t ipmi_methods[] = {
116         /* Device interface */
117         DEVMETHOD(device_identify,      ipmi_smbus_identify),
118         DEVMETHOD(device_probe,         ipmi_smbus_probe),
119         DEVMETHOD(device_attach,        ipmi_smbus_attach),
120         DEVMETHOD(device_detach,        ipmi_detach),
121         { 0, 0 }
122 };
123
124 static driver_t ipmi_smbus_driver = {
125         "ipmi",
126         ipmi_methods,
127         sizeof(struct ipmi_softc)
128 };
129
130 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, 0, 0);
131 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);