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/kernel.h>
34 #include <sys/module.h>
35 #include <sys/rman.h>
36 #include <sys/selinfo.h>
37
38 #include <contrib/dev/acpica/include/acpi.h>
39
40 #include <dev/acpica/acpivar.h>
41
42 /* Hooks for the ACPI CA debugging infrastructure */
43 #define _COMPONENT ACPI_BUTTON
44 ACPI_MODULE_NAME("IPMI")
45
46 #ifdef LOCAL_MODULE
47 #include <ipmi.h>
48 #include <ipmivars.h>
49 #else
50 #include <sys/ipmi.h>
51 #include <dev/ipmi/ipmivars.h>
52 #endif
53
54 static int ipmi_acpi_probe(device_t);
55 static int ipmi_acpi_attach(device_t);
56
57 int
ipmi_acpi_probe(device_t dev)58 ipmi_acpi_probe(device_t dev)
59 {
60 static char *ipmi_ids[] = {"IPI0001", NULL};
61 int rv;
62
63 if (ipmi_attached)
64 return (EBUSY);
65
66 if (acpi_disabled("ipmi"))
67 return (ENXIO);
68 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids, NULL);
69 if (rv <= 0)
70 device_set_desc(dev, "IPMI System Interface");
71
72 return (rv);
73 }
74
75 static int
ipmi_acpi_attach(device_t dev)76 ipmi_acpi_attach(device_t dev)
77 {
78 ACPI_HANDLE devh;
79 const char *mode;
80 struct ipmi_softc *sc = device_get_softc(dev);
81 int count, error, i, type;
82 int interface_type = 0, interface_version = 0;
83
84 error = 0;
85 devh = acpi_get_handle(dev);
86 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type)))
87 return (ENXIO);
88
89 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version)))
90 return (ENXIO);
91
92 switch (interface_type) {
93 case KCS_MODE:
94 count = IPMI_IF_KCS_NRES;
95 mode = "KCS";
96 break;
97 case SMIC_MODE:
98 count = IPMI_IF_SMIC_NRES;
99 mode = "SMIC";
100 break;
101 case BT_MODE:
102 count = IPMI_IF_BT_NRES;
103 mode = "BT";
104 break;
105 case SSIF_MODE:
106 device_printf(dev, "SSIF interface not supported on ACPI\n");
107 return (0);
108 default:
109 return (ENXIO);
110 }
111
112 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0)
113 type = SYS_RES_IOPORT;
114 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0)
115 type = SYS_RES_MEMORY;
116 else {
117 device_printf(dev, "unknown resource type\n");
118 return (ENXIO);
119 }
120
121 sc->ipmi_io_rid = 0;
122 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
123 &sc->ipmi_io_rid, RF_ACTIVE);
124 sc->ipmi_io_type = type;
125 sc->ipmi_io_spacing = 1;
126 if (sc->ipmi_io_res[0] == NULL) {
127 device_printf(dev, "couldn't configure I/O resource\n");
128 return (ENXIO);
129 }
130
131 /* If we have multiple resources, allocate up to MAX_RES. */
132 for (i = 1; i < MAX_RES; i++) {
133 sc->ipmi_io_rid = i;
134 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type,
135 &sc->ipmi_io_rid, RF_ACTIVE);
136 if (sc->ipmi_io_res[i] == NULL)
137 break;
138 }
139 sc->ipmi_io_rid = 0;
140
141 /* If we have multiple resources, make sure we have enough of them. */
142 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) {
143 device_printf(dev, "too few I/O resources\n");
144 error = ENXIO;
145 goto bad;
146 }
147
148 device_printf(dev, "%s mode found at %s 0x%jx on %s\n",
149 mode, type == SYS_RES_IOPORT ? "io" : "mem",
150 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]),
151 device_get_name(device_get_parent(dev)));
152
153 sc->ipmi_dev = dev;
154
155 /*
156 * Setup an interrupt if we have an interrupt resource. We
157 * don't support GPE interrupts via _GPE yet.
158 */
159 sc->ipmi_irq_rid = 0;
160 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
161 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
162
163 /* Warn if _GPE exists. */
164 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL)))
165 device_printf(dev, "_GPE support not implemented\n");
166
167 /*
168 * We assume an alignment of 1 byte as currently the IPMI spec
169 * doesn't provide any way to determine the alignment via ACPI.
170 */
171 error = ENXIO;
172 switch (interface_type) {
173 case KCS_MODE:
174 error = ipmi_kcs_attach(sc);
175 break;
176 case SMIC_MODE:
177 error = ipmi_smic_attach(sc);
178 break;
179 case BT_MODE:
180 error = ipmi_bt_attach(sc);
181 break;
182 }
183 if (error)
184 goto bad;
185 error = ipmi_attach(dev);
186 if (error)
187 goto bad;
188
189 return (0);
190 bad:
191 ipmi_release_resources(dev);
192 return (error);
193 }
194
195 static device_method_t ipmi_methods[] = {
196 /* Device interface */
197 DEVMETHOD(device_probe, ipmi_acpi_probe),
198 DEVMETHOD(device_attach, ipmi_acpi_attach),
199 DEVMETHOD(device_detach, ipmi_detach),
200 { 0, 0 }
201 };
202
203 static driver_t ipmi_acpi_driver = {
204 "ipmi",
205 ipmi_methods,
206 sizeof(struct ipmi_softc),
207 };
208
209 DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, 0, 0);
210 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1);
211