ipmi_pci.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/8.4/sys/dev/ipmi/ipmi_pci.c 168162 2007-03-31 21:39:02Z 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/eventhandler.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <sys/rman.h>
   38 #include <sys/selinfo.h>
   39 
   40 #include <dev/pci/pcireg.h>
   41 #include <dev/pci/pcivar.h>
   42 
   43 #ifdef LOCAL_MODULE
   44 #include <ipmivars.h>
   45 #else
   46 #include <dev/ipmi/ipmivars.h>
   47 #endif
   48 
   49 static int ipmi_pci_probe(device_t dev);
   50 static int ipmi_pci_attach(device_t dev);
   51 
   52 static struct ipmi_ident
   53 {
   54         u_int16_t       vendor;
   55         u_int16_t       device;
   56         char            *desc;
   57 } ipmi_identifiers[] = {
   58         {0x1028, 0x000d, "Dell PE2650 SMIC interface"},
   59         {0, 0, 0}
   60 };
   61 
   62 const char *
   63 ipmi_pci_match(uint16_t vendor, uint16_t device)
   64 {
   65         struct ipmi_ident *m;
   66 
   67         for (m = ipmi_identifiers; m->vendor != 0; m++)
   68                 if (m->vendor == vendor && m->device == device)
   69                         return (m->desc);
   70         return (NULL);
   71 }
   72 
   73 static int
   74 ipmi_pci_probe(device_t dev)
   75 {
   76         const char *desc;
   77 
   78         if (ipmi_attached)
   79                 return (ENXIO);
   80 
   81         desc = ipmi_pci_match(pci_get_vendor(dev), pci_get_device(dev));
   82         if (desc != NULL) {
   83                 device_set_desc(dev, desc);
   84                 return (BUS_PROBE_DEFAULT);
   85         }
   86 
   87         return (ENXIO);
   88 }
   89 
   90 static int
   91 ipmi_pci_attach(device_t dev)
   92 {
   93         struct ipmi_softc *sc = device_get_softc(dev);
   94         struct ipmi_get_info info;
   95         const char *mode;
   96         int error, type;
   97 
   98         /* Look for an IPMI entry in the SMBIOS table. */
   99         if (!ipmi_smbios_identify(&info))
  100                 return (ENXIO);
  101 
  102         sc->ipmi_dev = dev;
  103 
  104         switch (info.iface_type) {
  105         case KCS_MODE:
  106                 mode = "KCS";
  107                 break;
  108         case SMIC_MODE:
  109                 mode = "SMIC";
  110                 break;
  111         case BT_MODE:
  112                 device_printf(dev, "BT mode is unsupported\n");
  113                 return (ENXIO);
  114         default:
  115                 device_printf(dev, "No IPMI interface found\n");
  116                 return (ENXIO);
  117         }
  118 
  119         device_printf(dev, "%s mode found at %s 0x%jx alignment 0x%x on %s\n",
  120             mode, info.io_mode ? "io" : "mem",
  121             (uintmax_t)info.address, info.offset,
  122             device_get_name(device_get_parent(dev)));
  123         if (info.io_mode)
  124                 type = SYS_RES_IOPORT;
  125         else
  126                 type = SYS_RES_MEMORY;
  127 
  128         sc->ipmi_io_rid = PCIR_BAR(0);
  129         sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
  130             &sc->ipmi_io_rid, RF_ACTIVE);
  131         sc->ipmi_io_type = type;
  132         sc->ipmi_io_spacing = info.offset;
  133 
  134         if (sc->ipmi_io_res[0] == NULL) {
  135                 device_printf(dev, "couldn't configure pci io res\n");
  136                 return (ENXIO);
  137         }
  138 
  139         sc->ipmi_irq_rid = 0;
  140         sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  141             &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
  142 
  143         switch (info.iface_type) {
  144         case KCS_MODE:
  145                 error = ipmi_kcs_attach(sc);
  146                 if (error)
  147                         goto bad;
  148                 break;
  149         case SMIC_MODE:
  150                 error = ipmi_smic_attach(sc);
  151                 if (error)
  152                         goto bad;
  153                 break;
  154         }
  155         error = ipmi_attach(dev);
  156         if (error)
  157                 goto bad;
  158 
  159         return (0);
  160 bad:
  161         ipmi_release_resources(dev);
  162         return (error);
  163 }
  164 
  165 static device_method_t ipmi_methods[] = {
  166         /* Device interface */
  167         DEVMETHOD(device_probe,     ipmi_pci_probe),
  168         DEVMETHOD(device_attach,    ipmi_pci_attach),
  169         DEVMETHOD(device_detach,    ipmi_detach),
  170         { 0, 0 }
  171 };
  172 
  173 static driver_t ipmi_pci_driver = {
  174         "ipmi",
  175         ipmi_methods,
  176         sizeof(struct ipmi_softc)
  177 };
  178 
  179 DRIVER_MODULE(ipmi_pci, pci, ipmi_pci_driver, ipmi_devclass, 0, 0);
  180 
  181 /* Native IPMI on PCI driver. */
  182 
  183 static int
  184 ipmi2_pci_probe(device_t dev)
  185 {
  186 
  187         if (pci_get_class(dev) == PCIC_SERIALBUS &&
  188             pci_get_subclass(dev) == PCIS_SERIALBUS_IPMI) {
  189                 device_set_desc(dev, "IPMI System Interface");
  190                 return (BUS_PROBE_GENERIC);
  191         }
  192 
  193         return (ENXIO);
  194 }
  195 
  196 static int
  197 ipmi2_pci_attach(device_t dev)
  198 {
  199         struct ipmi_softc *sc;
  200         int error, iface, type;
  201 
  202         sc = device_get_softc(dev);
  203         sc->ipmi_dev = dev;
  204 
  205         /* Interface is determined by progif. */
  206         switch (pci_get_progif(dev)) {
  207         case PCIP_SERIALBUS_IPMI_SMIC:
  208                 iface = SMIC_MODE;
  209                 break;
  210         case PCIP_SERIALBUS_IPMI_KCS:
  211                 iface = KCS_MODE;
  212                 break;
  213         case PCIP_SERIALBUS_IPMI_BT:
  214                 iface = BT_MODE;
  215                 device_printf(dev, "BT interface unsupported\n");
  216                 return (ENXIO);
  217         default:
  218                 device_printf(dev, "Unsupported interface: %d\n",
  219                     pci_get_progif(dev));
  220                 return (ENXIO);
  221         }
  222 
  223         /* Check the BAR to determine our resource type. */
  224         sc->ipmi_io_rid = PCIR_BAR(0);
  225         if (PCI_BAR_IO(pci_read_config(dev, PCIR_BAR(0), 4)))
  226                 type = SYS_RES_IOPORT;
  227         else
  228                 type = SYS_RES_MEMORY;
  229         sc->ipmi_io_type = type;
  230         sc->ipmi_io_spacing = 1;
  231         sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
  232             &sc->ipmi_io_rid, RF_ACTIVE);
  233         if (sc->ipmi_io_res[0] == NULL) {
  234                 device_printf(dev, "couldn't map ports/memory\n");
  235                 return (ENXIO);
  236         }
  237 
  238         sc->ipmi_irq_rid = 0;
  239         sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  240             &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
  241 
  242         switch (iface) {
  243         case KCS_MODE:
  244                 device_printf(dev, "using KSC interface\n");
  245 
  246                 /*
  247                  * We have to examine the resource directly to determine the
  248                  * alignment.
  249                  */
  250                 if (!ipmi_kcs_probe_align(sc)) {
  251                         device_printf(dev, "Unable to determine alignment\n");
  252                         error = ENXIO;
  253                         goto bad;
  254                 }
  255 
  256                 error = ipmi_kcs_attach(sc);
  257                 if (error)
  258                         goto bad;
  259                 break;
  260         case SMIC_MODE:
  261                 device_printf(dev, "using SMIC interface\n");
  262 
  263                 error = ipmi_smic_attach(sc);
  264                 if (error)
  265                         goto bad;
  266                 break;
  267         }
  268         error = ipmi_attach(dev);
  269         if (error)
  270                 goto bad;
  271 
  272         return (0);
  273 bad:
  274         ipmi_release_resources(dev);
  275         return (error);
  276 }
  277 
  278 static device_method_t ipmi2_methods[] = {
  279         /* Device interface */
  280         DEVMETHOD(device_probe,     ipmi2_pci_probe),
  281         DEVMETHOD(device_attach,    ipmi2_pci_attach),
  282         DEVMETHOD(device_detach,    ipmi_detach),
  283         { 0, 0 }
  284 };
  285 
  286 static driver_t ipmi2_pci_driver = {
  287         "ipmi",
  288         ipmi2_methods,
  289         sizeof(struct ipmi_softc)
  290 };
  291 
  292 DRIVER_MODULE(ipmi2_pci, pci, ipmi2_pci_driver, ipmi_devclass, 0, 0);

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

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