2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
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
29 #include <sys/cdefs.h>
30 __FBSDID("$FreeBSD$");
32 #include <sys/param.h>
33 #include <sys/systm.h>
35 #include <sys/condvar.h>
36 #include <sys/eventhandler.h>
37 #include <sys/kernel.h>
38 #include <sys/module.h>
40 #include <sys/selinfo.h>
43 #include <machine/pci_cfgreg.h>
44 #include <dev/pci/pcireg.h>
46 #include <isa/isavar.h>
53 #include <dev/ipmi/ipmivars.h>
57 ipmi_isa_identify(driver_t *driver, device_t parent)
59 struct ipmi_get_info info;
62 if (ipmi_smbios_identify(&info) && info.iface_type != SSIF_MODE &&
63 device_find_child(parent, "ipmi", -1) == NULL) {
65 * XXX: Hack alert. On some broken systems, the IPMI
66 * interface is described via SMBIOS, but the actual
67 * IO resource is in a PCI device BAR, so we have to let
68 * the PCI device attach ipmi instead. In that case don't
69 * create an isa ipmi device. For now we hardcode the list
70 * of bus, device, function tuples.
72 devid = pci_cfgregread(0, 4, 2, PCIR_DEVVENDOR, 4);
73 if (devid != 0xffffffff &&
74 ipmi_pci_match(devid & 0xffff, devid >> 16) != NULL)
76 BUS_ADD_CHILD(parent, 0, "ipmi", -1);
81 ipmi_isa_probe(device_t dev)
85 * Give other drivers precedence. Unfortunately, this doesn't
86 * work if we have an SMBIOS table that duplicates a PCI device
87 * that's later on the bus than the PCI-ISA bridge.
92 /* Skip any PNP devices. */
93 if (isa_get_logicalid(dev) != 0)
96 device_set_desc(dev, "IPMI System Interface");
97 return (BUS_PROBE_DEFAULT);
101 ipmi_hint_identify(device_t dev, struct ipmi_get_info *info)
103 const char *mode, *name;
106 /* We require at least a "mode" hint. */
107 name = device_get_name(dev);
108 unit = device_get_unit(dev);
109 if (resource_string_value(name, unit, "mode", &mode) != 0)
112 /* Set the mode and default I/O resources for each mode. */
113 bzero(info, sizeof(struct ipmi_get_info));
114 if (strcasecmp(mode, "KCS") == 0) {
115 info->iface_type = KCS_MODE;
116 info->address = 0xca2;
119 } else if (strcasecmp(mode, "SMIC") == 0) {
120 info->iface_type = SMIC_MODE;
121 info->address = 0xca9;
124 } else if (strcasecmp(mode, "BT") == 0) {
125 info->iface_type = BT_MODE;
126 info->address = 0xe4;
130 device_printf(dev, "Invalid mode %s\n", mode);
135 * Kill any resources that isahint.c might have setup for us
136 * since it will conflict with how we do resources.
138 for (i = 0; i < 2; i++) {
139 bus_delete_resource(dev, SYS_RES_MEMORY, i);
140 bus_delete_resource(dev, SYS_RES_IOPORT, i);
143 /* Allow the I/O address to be overriden via hints. */
144 if (resource_int_value(name, unit, "port", &val) == 0 && val != 0) {
147 } else if (resource_int_value(name, unit, "maddr", &val) == 0 &&
153 /* Allow the spacing to be overriden. */
154 if (resource_int_value(name, unit, "spacing", &val) == 0) {
166 device_printf(dev, "Invalid register spacing\n");
174 ipmi_isa_attach(device_t dev)
176 struct ipmi_softc *sc = device_get_softc(dev);
177 struct ipmi_get_info info;
179 int count, error, i, type;
182 * Pull info out of the SMBIOS table. If that doesn't work, use
183 * hints to enumerate a device.
185 if (!ipmi_smbios_identify(&info) &&
186 !ipmi_hint_identify(dev, &info))
189 switch (info.iface_type) {
199 device_printf(dev, "BT mode is unsupported\n");
207 device_printf(dev, "%s mode found at %s 0x%jx alignment 0x%x on %s\n",
208 mode, info.io_mode ? "io" : "mem",
209 (uintmax_t)info.address, info.offset,
210 device_get_name(device_get_parent(dev)));
212 type = SYS_RES_IOPORT;
214 type = SYS_RES_MEMORY;
216 sc->ipmi_io_type = type;
217 sc->ipmi_io_spacing = info.offset;
218 if (info.offset == 1) {
220 sc->ipmi_io_res[0] = bus_alloc_resource(dev, type,
221 &sc->ipmi_io_rid, info.address, info.address + count - 1,
223 if (sc->ipmi_io_res[0] == NULL) {
224 device_printf(dev, "couldn't configure I/O resource\n");
228 for (i = 0; i < count; i++) {
230 sc->ipmi_io_res[i] = bus_alloc_resource(dev, type,
231 &sc->ipmi_io_rid, info.address + i * info.offset,
232 info.address + i * info.offset, 1, RF_ACTIVE);
233 if (sc->ipmi_io_res[i] == NULL) {
235 "couldn't configure I/O resource\n");
245 sc->ipmi_irq_rid = 0;
246 sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
247 &sc->ipmi_irq_rid, info.irq, info.irq, 1,
248 RF_SHAREABLE | RF_ACTIVE);
251 switch (info.iface_type) {
253 error = ipmi_kcs_attach(sc);
258 error = ipmi_smic_attach(sc);
264 error = ipmi_attach(dev);
270 ipmi_release_resources(dev);
274 static device_method_t ipmi_methods[] = {
275 /* Device interface */
276 DEVMETHOD(device_identify, ipmi_isa_identify),
277 DEVMETHOD(device_probe, ipmi_isa_probe),
278 DEVMETHOD(device_attach, ipmi_isa_attach),
279 DEVMETHOD(device_detach, ipmi_detach),
283 static driver_t ipmi_isa_driver = {
286 sizeof(struct ipmi_softc),
289 DRIVER_MODULE(ipmi_isa, isa, ipmi_isa_driver, ipmi_devclass, 0, 0);
290 #ifdef ARCH_MAY_USE_EFI
291 MODULE_DEPEND(ipmi_isa, efirt, 1, 1, 1);