ipmi_acpi.c

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    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 
   27 #include <sys/cdefs.h>
   28 __FBSDID("$FreeBSD: releng/7.3/sys/dev/ipmi/ipmi_acpi.c 192149 2009-05-15 18:50:30Z jhb $");
   29 
   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/acpi.h>
   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/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
   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
   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, 0, 0);
  210 MODULE_DEPEND(ipmi_acpi, acpi, 1, 1, 1);

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

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