1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2006 IronPort Systems Inc. <[email protected]>
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/cdefs.h>
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 #include <sys/efi.h>
40
41 #include <dev/smbus/smbconf.h>
42 #include <dev/smbus/smbus.h>
43 #include <dev/smbus/smb.h>
44
45 #include "smbus_if.h"
46
47 #ifdef LOCAL_MODULE
48 #include <ipmivars.h>
49 #else
50 #include <dev/ipmi/ipmivars.h>
51 #endif
52
53 static void ipmi_smbus_identify(driver_t *driver, device_t parent);
54 static int ipmi_smbus_probe(device_t dev);
55 static int ipmi_smbus_attach(device_t dev);
56
57 static void
ipmi_smbus_identify(driver_t * driver,device_t parent)58 ipmi_smbus_identify(driver_t *driver, device_t parent)
59 {
60 struct ipmi_get_info info;
61
62 if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE &&
63 device_find_child(parent, "ipmi", -1) == NULL)
64 BUS_ADD_CHILD(parent, 0, "ipmi", -1);
65 }
66
67 static int
ipmi_smbus_probe(device_t dev)68 ipmi_smbus_probe(device_t dev)
69 {
70
71 device_set_desc(dev, "IPMI System Interface");
72 return (BUS_PROBE_DEFAULT);
73 }
74
75 static int
ipmi_smbus_attach(device_t dev)76 ipmi_smbus_attach(device_t dev)
77 {
78 struct ipmi_softc *sc = device_get_softc(dev);
79 struct ipmi_get_info info;
80 int error;
81
82 /* This should never fail. */
83 if (!ipmi_smbios_identify(&info))
84 return (ENXIO);
85
86 if (info.iface_type != SSIF_MODE) {
87 device_printf(dev, "No SSIF IPMI interface found\n");
88 return (ENXIO);
89 }
90
91 sc->ipmi_dev = dev;
92
93 if (info.irq != 0) {
94 sc->ipmi_irq_rid = 0;
95 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
96 &sc->ipmi_irq_rid, info.irq, info.irq, 1,
97 RF_SHAREABLE | RF_ACTIVE);
98 }
99
100 device_printf(dev, "SSIF mode found at address 0x%llx on %s\n",
101 (long long)info.address, device_get_name(device_get_parent(dev)));
102 error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address);
103 if (error)
104 goto bad;
105
106 error = ipmi_attach(dev);
107 if (error)
108 goto bad;
109
110 return (0);
111 bad:
112 ipmi_release_resources(dev);
113 return (error);
114 }
115
116 static device_method_t ipmi_methods[] = {
117 /* Device interface */
118 DEVMETHOD(device_identify, ipmi_smbus_identify),
119 DEVMETHOD(device_probe, ipmi_smbus_probe),
120 DEVMETHOD(device_attach, ipmi_smbus_attach),
121 DEVMETHOD(device_detach, ipmi_detach),
122 { 0, 0 }
123 };
124
125 static driver_t ipmi_smbus_driver = {
126 "ipmi",
127 ipmi_methods,
128 sizeof(struct ipmi_softc)
129 };
130
131 DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, 0, 0);
132 MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
133 #ifdef ARCH_MAY_USE_EFI
134 MODULE_DEPEND(ipmi_smbus, efirt, 1, 1, 1);
135 #endif
136