1 /*-
2 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: head/sys/dev/ipmi/ipmi_acpi.c 193530 2009-06-05 18:44:36Z jkim $
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/conf.h>
37
38 #include <contrib/dev/acpica/source/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/misc/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
62 if (ipmi_attached)
63 return (EBUSY);
64
65 if (acpi_disabled("ipmi") ||
66 ACPI_ID_PROBE(device_get_parent(dev), dev, ipmi_ids) == NULL)
67 return (ENXIO);
68
69 device_set_desc(dev, "IPMI System Interface");
70
71 return (0);
72 }
73
74 static int
ipmi_acpi_attach(device_t dev)75 ipmi_acpi_attach(device_t dev)
76 {
77 ACPI_HANDLE devh;
78 const char *mode;
79 struct ipmi_get_info info;
80 struct ipmi_softc *sc = device_get_softc(dev);
81 int count, error, flags, 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 = 2;
95 mode = "KCS";
96 break;
97 case SMIC_MODE:
98 count = 3;
99 mode = "SMIC";
100 break;
101 case BT_MODE:
102 device_printf(dev, "BT interface not supported\n");
103 return (ENXIO);
104 case SSIF_MODE:
105 if (ACPI_FAILURE(acpi_GetInteger(devh, "_ADR", &flags)))
106 return (ENXIO);
107 info.address = flags;
108 device_printf(dev, "SSIF interface not supported on ACPI\n");
109 return (0);
110 default:
111 return (ENXIO);
112 }
113
114 if (bus_get_resource(dev, SYS_RES_IOPORT, 0, NULL, NULL) == 0)
115 type = SYS_RES_IOPORT;
116 else if (bus_get_resource(dev, SYS_RES_MEMORY, 0, NULL, NULL) == 0)
117 type = SYS_RES_MEMORY;
118 else {
119 device_printf(dev, "unknown resource type\n");
120 return (ENXIO);
121 }
122
123 sc->ipmi_io_rid = 0;
124 sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
125 &sc->ipmi_io_rid, RF_ACTIVE);
126 sc->ipmi_io_type = type;
127 sc->ipmi_io_spacing = 1;
128 if (sc->ipmi_io_res[0] == NULL) {
129 device_printf(dev, "couldn't configure I/O resource\n");
130 return (ENXIO);
131 }
132
133 /* If we have multiple resources, allocate up to MAX_RES. */
134 for (i = 1; i < MAX_RES; i++) {
135 sc->ipmi_io_rid = i;
136 sc->ipmi_io_res[i] = bus_alloc_resource_any(dev, type,
137 &sc->ipmi_io_rid, RF_ACTIVE);
138 if (sc->ipmi_io_res[i] == NULL)
139 break;
140 }
141 sc->ipmi_io_rid = 0;
142
143 /* If we have multiple resources, make sure we have enough of them. */
144 if (sc->ipmi_io_res[1] != NULL && sc->ipmi_io_res[count - 1] == NULL) {
145 device_printf(dev, "too few I/O resources\n");
146 error = ENXIO;
147 goto bad;
148 }
149
150 device_printf(dev, "%s mode found at %s 0x%jx on %s\n",
151 mode, type == SYS_RES_IOPORT ? "io" : "mem",
152 (uintmax_t)rman_get_start(sc->ipmi_io_res[0]),
153 device_get_name(device_get_parent(dev)));
154
155 sc->ipmi_dev = dev;
156
157 /*
158 * Setup an interrupt if we have an interrupt resource. We
159 * don't support GPE interrupts via _GPE yet.
160 */
161 sc->ipmi_irq_rid = 0;
162 sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
163 &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
164
165 /* Warn if _GPE exists. */
166 if (ACPI_SUCCESS(AcpiEvaluateObject(devh, "_GPE", NULL, NULL)))
167 device_printf(dev, "_GPE support not implemented\n");
168
169 /*
170 * We assume an alignment of 1 byte as currently the IPMI spec
171 * doesn't provide any way to determine the alignment via ACPI.
172 */
173 switch (interface_type) {
174 case KCS_MODE:
175 error = ipmi_kcs_attach(sc);
176 if (error)
177 goto bad;
178 break;
179 case SMIC_MODE:
180 error = ipmi_smic_attach(sc);
181 if (error)
182 goto bad;
183 break;
184 }
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, ipmi_devclass, NULL, NULL);
210 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1);
211