1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
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/selinfo.h>
38 #include <sys/efi.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
ipmi_smbus_identify(driver_t * driver,device_t parent)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
ipmi_smbus_probe(device_t dev)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
ipmi_smbus_attach(device_t dev)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, 0, 0);
131 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
132 #ifdef ARCH_MAY_USE_EFI
133 MODULE_DEPEND(ipmi_smbus, efirt, 1, 1, 1);
134 #endif
135