ee8b757a94
The original implementation only supports getting the address from legacy BIOS (by searching for the SMBIOS_SIG pattern in a fixed address space). Try to get the SMBIOS table from EFI through efirt (EFI Runtime Services) firstly. Continue to search in the legacy BIOS if a NULL address is returned from EFI. By this way the ipmi function supports both legacy BIOS and UEFI systems. Reviewed by: dab, vangyzen MFC after: 1 week Sponsored by: Dell EMC Isilon Differential Revision: https://reviews.freebsd.org/D30007
138 lines
3.8 KiB
C
138 lines
3.8 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/bus.h>
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#include <sys/condvar.h>
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#include <sys/eventhandler.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/rman.h>
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#include <sys/selinfo.h>
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#include <sys/efi.h>
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#include <dev/smbus/smbconf.h>
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#include <dev/smbus/smbus.h>
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#include <dev/smbus/smb.h>
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#include "smbus_if.h"
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#ifdef LOCAL_MODULE
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#include <ipmivars.h>
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#else
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#include <dev/ipmi/ipmivars.h>
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#endif
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static void ipmi_smbus_identify(driver_t *driver, device_t parent);
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static int ipmi_smbus_probe(device_t dev);
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static int ipmi_smbus_attach(device_t dev);
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static void
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ipmi_smbus_identify(driver_t *driver, device_t parent)
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{
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struct ipmi_get_info info;
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if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE &&
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device_find_child(parent, "ipmi", -1) == NULL)
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BUS_ADD_CHILD(parent, 0, "ipmi", -1);
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}
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static int
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ipmi_smbus_probe(device_t dev)
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{
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device_set_desc(dev, "IPMI System Interface");
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return (BUS_PROBE_DEFAULT);
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}
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static int
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ipmi_smbus_attach(device_t dev)
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{
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struct ipmi_softc *sc = device_get_softc(dev);
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struct ipmi_get_info info;
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int error;
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/* This should never fail. */
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if (!ipmi_smbios_identify(&info))
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return (ENXIO);
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if (info.iface_type != SSIF_MODE) {
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device_printf(dev, "No SSIF IPMI interface found\n");
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return (ENXIO);
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}
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sc->ipmi_dev = dev;
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if (info.irq != 0) {
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sc->ipmi_irq_rid = 0;
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sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
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&sc->ipmi_irq_rid, info.irq, info.irq, 1,
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RF_SHAREABLE | RF_ACTIVE);
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}
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device_printf(dev, "SSIF mode found at address 0x%llx on %s\n",
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(long long)info.address, device_get_name(device_get_parent(dev)));
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error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address);
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if (error)
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goto bad;
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error = ipmi_attach(dev);
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if (error)
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goto bad;
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return (0);
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bad:
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ipmi_release_resources(dev);
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return (error);
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}
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static device_method_t ipmi_methods[] = {
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/* Device interface */
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DEVMETHOD(device_identify, ipmi_smbus_identify),
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DEVMETHOD(device_probe, ipmi_smbus_probe),
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DEVMETHOD(device_attach, ipmi_smbus_attach),
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DEVMETHOD(device_detach, ipmi_detach),
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{ 0, 0 }
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};
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static driver_t ipmi_smbus_driver = {
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"ipmi",
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ipmi_methods,
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sizeof(struct ipmi_softc)
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};
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DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, 0, 0);
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MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);
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#ifdef ARCH_MAY_USE_EFI
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MODULE_DEPEND(ipmi_smbus, efirt, 1, 1, 1);
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#endif
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