FreeBSD/Linux Kernel Cross Reference
sys/dev/ipmi/ipmi_smbus.c

     /*-
      * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
      * All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/8.4/sys/dev/ipmi/ipmi_smbus.c 162562 2006-09-22 22:11:29Z jhb $");
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    #include <sys/condvar.h>
    #include <sys/eventhandler.h>
    #include <sys/kernel.h>
    #include <sys/module.h>
    #include <sys/rman.h>
    #include <sys/selinfo.h>
    
    #include <dev/smbus/smbconf.h>
    #include <dev/smbus/smbus.h>
    #include <dev/smbus/smb.h>
    
    #include "smbus_if.h"
    
    #ifdef LOCAL_MODULE
    #include <ipmivars.h>
    #else
    #include <dev/ipmi/ipmivars.h>
    #endif
    
    static void ipmi_smbus_identify(driver_t *driver, device_t parent);
    static int ipmi_smbus_probe(device_t dev);
    static int ipmi_smbus_attach(device_t dev);
    
    static void
    ipmi_smbus_identify(driver_t *driver, device_t parent)
    {
            struct ipmi_get_info info;
    
            if (ipmi_smbios_identify(&info) && info.iface_type == SSIF_MODE &&
                device_find_child(parent, "ipmi", -1) == NULL)
                    BUS_ADD_CHILD(parent, 0, "ipmi", -1);
    }
    
    static int
    ipmi_smbus_probe(device_t dev)
    {
    
            device_set_desc(dev, "IPMI System Interface");
            return (BUS_PROBE_DEFAULT);
    }
    
    static int
    ipmi_smbus_attach(device_t dev)
    {
            struct ipmi_softc *sc = device_get_softc(dev);
            struct ipmi_get_info info;
            int error;
    
            /* This should never fail. */
            if (!ipmi_smbios_identify(&info))
                    return (ENXIO);
    
            if (info.iface_type != SSIF_MODE) {
                    device_printf(dev, "No SSIF IPMI interface found\n");
                    return (ENXIO);
            }
    
            sc->ipmi_dev = dev;
    
            if (info.irq != 0) {
                    sc->ipmi_irq_rid = 0;
                    sc->ipmi_irq_res = bus_alloc_resource(dev, SYS_RES_IRQ,
                        &sc->ipmi_irq_rid, info.irq, info.irq, 1,
                        RF_SHAREABLE | RF_ACTIVE);
            }
    
            device_printf(dev, "SSIF mode found at address 0x%llx on %s\n",
               (long long)info.address, device_get_name(device_get_parent(dev)));
           error = ipmi_ssif_attach(sc, device_get_parent(dev), info.address);
           if (error)
                   goto bad;
   
           error = ipmi_attach(dev);
           if (error)
                   goto bad;
   
           return (0);
   bad:
           ipmi_release_resources(dev);
           return (error);
   }
   
   static device_method_t ipmi_methods[] = {
           /* Device interface */
           DEVMETHOD(device_identify,      ipmi_smbus_identify),
           DEVMETHOD(device_probe,         ipmi_smbus_probe),
           DEVMETHOD(device_attach,        ipmi_smbus_attach),
           DEVMETHOD(device_detach,        ipmi_detach),
           { 0, 0 }
   };
   
   static driver_t ipmi_smbus_driver = {
           "ipmi",
           ipmi_methods,
           sizeof(struct ipmi_softc)
   };
   
   DRIVER_MODULE(ipmi_smbus, smbus, ipmi_smbus_driver, ipmi_devclass, 0, 0);
   MODULE_DEPEND(ipmi_smbus, smbus, SMBUS_MINVER, SMBUS_PREFVER, SMBUS_MAXVER);

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