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/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/kernel.h>
35 #include <sys/module.h>
36 #include <sys/rman.h>
37 #include <sys/selinfo.h>
38
39 #include <contrib/dev/acpica/include/acpi.h>
40
41 #include <dev/acpica/acpivar.h>
42
43 /* Hooks for the ACPI CA debugging infrastructure */
44 #define _COMPONENT ACPI_BUTTON
45 ACPI_MODULE_NAME("IPMI")
46
47 #ifdef LOCAL_MODULE
48 #include <ipmi.h>
49 #include <ipmivars.h>
50 #else
51 #include <sys/ipmi.h>
52 #include <dev/ipmi/ipmivars.h>
53 #endif
54
55 static int ipmi_acpi_probe(device_t);
56 static int ipmi_acpi_attach(device_t);
57
58 int
ipmi_acpi_probe(device_t dev)59 ipmi_acpi_probe(device_t dev)
60 {
61 static char *ipmi_ids[] = {"IPI0001", NULL};
62 int rv;
63
64 if (ipmi_attached)
65 return (EBUSY);
66
67 if (acpi_disabled("ipmi"))
68 return (ENXIO);
69 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids, NULL);
70 if (rv <= 0)
71 device_set_desc(dev, "IPMI System Interface");
72
73 return (rv);
74 }
75
76 static int
ipmi_acpi_attach(device_t dev)77 ipmi_acpi_attach(device_t dev)
78 {
79 ACPI_HANDLE devh;
80 const char *mode;
81 struct ipmi_get_info info;
82 struct ipmi_softc *sc = device_get_softc(dev);
83 int count, error, flags, i, type;
84 int interface_type = 0, interface_version = 0;
85
86 error = 0;
87 devh = acpi_get_handle(dev);
88 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type)))
89 return (ENXIO);
90
91 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version)))
92 return (ENXIO);
93
94 switch (interface_type) {
95 case KCS_MODE:
96 count = IPMI_IF_KCS_NRES;
97 mode = "KCS";
98 break;
99 case SMIC_MODE:
100 count = IPMI_IF_SMIC_NRES;
101 mode = "SMIC";
102 break;
103 case BT_MODE:
104 count = IPMI_IF_BT_NRES;
105 mode = "BT";
106 break;
107 case SSIF_MODE:
108 if (ACPI_FAILURE(acpi_GetInteger(devh, "_ADR", &flags)))
109 return (ENXIO);
110 info.address = flags;
111 device_printf(dev, "SSIF interface not supported on ACPI\n");
112 return (0);
113 default:
114 return (ENXIO);
115 }
116
117 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0)
118 type = SYS_RES_IOPORT;
119 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0)
120 type = SYS_RES_MEMORY;
121 else {
122 device_printf(dev, "unknown resource type\n");
123 return (ENXIO);
124 }
125
126 sc->ipmi_io_rid = 0;
127 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
128 &sc->ipmi_io_rid, RF_ACTIVE);
129 sc->ipmi_io_type = type;
130 sc->ipmi_io_spacing = 1;
131 if (sc->ipmi_io_res[0] == NULL) {
132 device_printf(dev, "couldn't configure I/O resource\n");
133 return (ENXIO);
134 }
135
136 /* If we have multiple resources, allocate up to MAX_RES. */
137 for (i = 1; i < MAX_RES; i++) {
138 sc->ipmi_io_rid = i;
139 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type,
140 &sc->ipmi_io_rid, RF_ACTIVE);
141 if (sc->ipmi_io_res[i] == NULL)
142 break;
143 }
144 sc->ipmi_io_rid = 0;
145
146 /* If we have multiple resources, make sure we have enough of them. */
147 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) {
148 device_printf(dev, "too few I/O resources\n");
149 error = ENXIO;
150 goto bad;
151 }
152
153 device_printf(dev, "%s mode found at %s 0x%jx on %s\n",
154 mode, type == SYS_RES_IOPORT ? "io" : "mem",
155 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]),
156 device_get_name(device_get_parent(dev)));
157
158 sc->ipmi_dev = dev;
159
160 /*
161 * Setup an interrupt if we have an interrupt resource. We
162 * don't support GPE interrupts via _GPE yet.
163 */
164 sc->ipmi_irq_rid = 0;
165 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
166 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
167
168 /* Warn if _GPE exists. */
169 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL)))
170 device_printf(dev, "_GPE support not implemented\n");
171
172 /*
173 * We assume an alignment of 1 byte as currently the IPMI spec
174 * doesn't provide any way to determine the alignment via ACPI.
175 */
176 error = ENXIO;
177 switch (interface_type) {
178 case KCS_MODE:
179 error = ipmi_kcs_attach(sc);
180 break;
181 case SMIC_MODE:
182 error = ipmi_smic_attach(sc);
183 break;
184 case BT_MODE:
185 error = ipmi_bt_attach(sc);
186 break;
187 }
188 if (error)
189 goto bad;
190 error = ipmi_attach(dev);
191 if (error)
192 goto bad;
193
194 return (0);
195 bad:
196 ipmi_release_resources(dev);
197 return (error);
198 }
199
200 static device_method_t ipmi_methods[] = {
201 /* Device interface */
202 DEVMETHOD(device_probe, ipmi_acpi_probe),
203 DEVMETHOD(device_attach, ipmi_acpi_attach),
204 DEVMETHOD(device_detach, ipmi_detach),
205 { 0, 0 }
206 };
207
208 static driver_t ipmi_acpi_driver = {
209 "ipmi",
210 ipmi_methods,
211 sizeof(struct ipmi_softc),
212 };
213
214 DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, ipmi_devclass, 0, 0);
215 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1);
216