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 * $FreeBSD: head/sys/dev/ipmi/ipmi_smbus.c 162562 2006-09-22 22:11:29Z jhb $
27 */
28
29 #include <sys/param.h>
30 #include <sys/systm.h>
31 #include <sys/bus.h>
32 #include <sys/condvar.h>
33 #include <sys/eventhandler.h>
34 #include <sys/kernel.h>
35 #include <sys/module.h>
36 #include <sys/rman.h>
37 #include <sys/conf.h>
38
39 #include <bus/smbus/smbconf.h>
40 #include <bus/smbus/smbus.h>
41 #include <dev/smbus/smb/smb.h>
42
43 #include "smbus_if.h"
44
45 #ifdef LOCAL_MODULE
46 #include <ipmivars.h>
47 #else
48 #include <dev/misc/ipmi/ipmivars.h>
49 #endif
50
51 static void ipmi_smbus_identify(driver_t *driver, device_t parent);
52 static int ipmi_smbus_probe(device_t dev);
53 static int ipmi_smbus_attach(device_t dev);
54
55 static void
ipmi_smbus_identify(driver_t * driver,device_t parent)56 ipmi_smbus_identify(driver_t *driver, device_t parent)
57 {
58 struct ipmi_get_info info;
59
60 if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE &&
61 device_find_child(parent, "ipmi", -1) == NULL)
62 BUS_ADD_CHILD(parent, parent, 0, "ipmi", -1);
63 }
64
65 static int
ipmi_smbus_probe(device_t dev)66 ipmi_smbus_probe(device_t dev)
67 {
68
69 device_set_desc(dev, "IPMI System Interface");
70 return (BUS_PROBE_DEFAULT);
71 }
72
73 static int
ipmi_smbus_attach(device_t dev)74 ipmi_smbus_attach(device_t dev)
75 {
76 struct ipmi_softc *sc = device_get_softc(dev);
77 struct ipmi_get_info info;
78 int error;
79
80 /* This should never fail. */
81 if (!ipmi_smbios_identify(&info))
82 return (ENXIO);
83
84 if (info.iface_type != SSIF_MODE) {
85 device_printf(dev, "No SSIF IPMI interface found\n");
86 return (ENXIO);
87 }
88
89 sc->ipmi_dev = dev;
90
91 if (info.irq != 0) {
92 sc->ipmi_irq_rid = 0;
93 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
94 &sc->ipmi_irq_rid, info.irq, info.irq, 1,
95 RF_SHAREABLE | RF_ACTIVE);
96 }
97
98 device_printf(dev, "SSIF mode found at address 0x%llx on %s\n",
99 (long long)info.address, device_get_name(device_get_parent(dev)));
100 error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address);
101 if (error)
102 goto bad;
103
104 error = ipmi_attach(dev);
105 if (error)
106 goto bad;
107
108 return (0);
109 bad:
110 ipmi_release_resources(dev);
111 return (error);
112 }
113
114 static device_method_t ipmi_methods[] = {
115 /* Device interface */
116 DEVMETHOD(device_identify, ipmi_smbus_identify),
117 DEVMETHOD(device_probe, ipmi_smbus_probe),
118 DEVMETHOD(device_attach, ipmi_smbus_attach),
119 DEVMETHOD(device_detach, ipmi_detach),
120 { 0, 0 }
121 };
122
123 static driver_t ipmi_smbus_driver = {
124 "ipmi",
125 ipmi_methods,
126 sizeof(struct ipmi_softc)
127 };
128
129 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, NULL, NULL);
130 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
131