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/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_softc *sc = device_get_softc(dev);
82 int count, error, i, type;
83 int interface_type = 0, interface_version = 0;
84
85 error = 0;
86 devh = acpi_get_handle(dev);
87 if (ACPI_FAILURE(acpi_GetInteger(devh, "_IFT", &interface_type)))
88 return (ENXIO);
89
90 if (ACPI_FAILURE(acpi_GetInteger(devh, "_SRV", &interface_version)))
91 return (ENXIO);
92
93 switch (interface_type) {
94 case KCS_MODE:
95 count = IPMI_IF_KCS_NRES;
96 mode = "KCS";
97 break;
98 case SMIC_MODE:
99 count = IPMI_IF_SMIC_NRES;
100 mode = "SMIC";
101 break;
102 case BT_MODE:
103 count = IPMI_IF_BT_NRES;
104 mode = "BT";
105 break;
106 case SSIF_MODE:
107 device_printf(dev, "SSIF interface not supported on ACPI\n");
108 return (0);
109 default:
110 return (ENXIO);
111 }
112
113 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0)
114 type = SYS_RES_IOPORT;
115 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0)
116 type = SYS_RES_MEMORY;
117 else {
118 device_printf(dev, "unknown resource type\n");
119 return (ENXIO);
120 }
121
122 sc->ipmi_io_rid = 0;
123 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
124 &sc->ipmi_io_rid, RF_ACTIVE);
125 sc->ipmi_io_type = type;
126 sc->ipmi_io_spacing = 1;
127 if (sc->ipmi_io_res[0] == NULL) {
128 device_printf(dev, "couldn't configure I/O resource\n");
129 return (ENXIO);
130 }
131
132 /* If we have multiple resources, allocate up to MAX_RES. */
133 for (i = 1; i < MAX_RES; i++) {
134 sc->ipmi_io_rid = i;
135 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type,
136 &sc->ipmi_io_rid, RF_ACTIVE);
137 if (sc->ipmi_io_res[i] == NULL)
138 break;
139 }
140 sc->ipmi_io_rid = 0;
141
142 /* If we have multiple resources, make sure we have enough of them. */
143 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) {
144 device_printf(dev, "too few I/O resources\n");
145 error = ENXIO;
146 goto bad;
147 }
148
149 device_printf(dev, "%s mode found at %s 0x%jx on %s\n",
150 mode, type == SYS_RES_IOPORT ? "io" : "mem",
151 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]),
152 device_get_name(device_get_parent(dev)));
153
154 sc->ipmi_dev = dev;
155
156 /*
157 * Setup an interrupt if we have an interrupt resource. We
158 * don't support GPE interrupts via _GPE yet.
159 */
160 sc->ipmi_irq_rid = 0;
161 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
162 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
163
164 /* Warn if _GPE exists. */
165 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL)))
166 device_printf(dev, "_GPE support not implemented\n");
167
168 /*
169 * We assume an alignment of 1 byte as currently the IPMI spec
170 * doesn't provide any way to determine the alignment via ACPI.
171 */
172 error = ENXIO;
173 switch (interface_type) {
174 case KCS_MODE:
175 error = ipmi_kcs_attach(sc);
176 break;
177 case SMIC_MODE:
178 error = ipmi_smic_attach(sc);
179 break;
180 case BT_MODE:
181 error = ipmi_bt_attach(sc);
182 break;
183 }
184 if (error)
185 goto bad;
186 error = ipmi_attach(dev);
187 if (error)
188 goto bad;
189
190 return (0);
191 bad:
192 ipmi_release_resources(dev);
193 return (error);
194 }
195
196 static device_method_t ipmi_methods[] = {
197 /* Device interface */
198 DEVMETHOD(device_probe, ipmi_acpi_probe),
199 DEVMETHOD(device_attach, ipmi_acpi_attach),
200 DEVMETHOD(device_detach, ipmi_detach),
201 { 0, 0 }
202 };
203
204 static driver_t ipmi_acpi_driver = {
205 "ipmi",
206 ipmi_methods,
207 sizeof(struct ipmi_softc),
208 };
209
210 DRIVER_MODULE(ipmi_acpi, acpi, ipmi_acpi_driver, 0, 0);
211 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1);
212