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
52static void ipmi_smbus_identify(driver_t *driver, device_t parent);
53static int ipmi_smbus_probe(device_t dev);
54static int ipmi_smbus_attach(device_t dev);
55
56static void
57ipmi_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
66static int
67ipmi_smbus_probe(device_t dev)
68{
69
70	device_set_desc(dev, "IPMI System Interface");
71	return (BUS_PROBE_DEFAULT);
72}
73
74static int
75ipmi_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);
110bad:
111	ipmi_release_resources(dev);
112	return (error);
113}
114
115static 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
124static driver_t ipmi_smbus_driver = {
125	"ipmi",
126	ipmi_methods,
127	sizeof(struct ipmi_softc)
128};
129
130DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, 0, 0);
131MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
132#ifdef ARCH_MAY_USE_EFI
133MODULE_DEPEND(ipmi_smbus, efirt, 1, 1, 1);
134#endif
135