ipmi_pci.c

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    1 /*-
    2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
    3  *
    4  * Copyright (c) 2006 IronPort Systems Inc. <ambrisko@ironport.com>
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   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.
   15  *
   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
   26  * SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __FBSDID("$FreeBSD$");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/bus.h>
   35 #include <sys/condvar.h>
   36 #include <sys/eventhandler.h>
   37 #include <sys/kernel.h>
   38 #include <sys/module.h>
   39 #include <sys/rman.h>
   40 #include <sys/selinfo.h>
   41 #include <sys/efi.h>
   42 
   43 #include <dev/pci/pcireg.h>
   44 #include <dev/pci/pcivar.h>
   45 
   46 #ifdef LOCAL_MODULE
   47 #include <ipmivars.h>
   48 #else
   49 #include <dev/ipmi/ipmivars.h>
   50 #endif
   51 
   52 static int ipmi_pci_probe(device_t dev);
   53 static int ipmi_pci_attach(device_t dev);
   54 
   55 static struct ipmi_ident
   56 {
   57         u_int16_t       vendor;
   58         u_int16_t       device;
   59         char            *desc;
   60 } ipmi_identifiers[] = {
   61         {0x1028, 0x000d, "Dell PE2650 SMIC interface"},
   62         {0, 0, 0}
   63 };
   64 
   65 const char *
   66 ipmi_pci_match(uint16_t vendor, uint16_t device)
   67 {
   68         struct ipmi_ident *m;
   69 
   70         for (m = ipmi_identifiers; m->vendor != 0; m++)
   71                 if (m->vendor == vendor && m->device == device)
   72                         return (m->desc);
   73         return (NULL);
   74 }
   75 
   76 static int
   77 ipmi_pci_probe(device_t dev)
   78 {
   79         const char *desc;
   80 
   81         if (ipmi_attached)
   82                 return (ENXIO);
   83 
   84         desc = ipmi_pci_match(pci_get_vendor(dev), pci_get_device(dev));
   85         if (desc != NULL) {
   86                 device_set_desc(dev, desc);
   87                 return (BUS_PROBE_DEFAULT);
   88         }
   89 
   90         return (ENXIO);
   91 }
   92 
   93 static int
   94 ipmi_pci_attach(device_t dev)
   95 {
   96         struct ipmi_softc *sc = device_get_softc(dev);
   97         struct ipmi_get_info info;
   98         const char *mode;
   99         int error, type;
  100 
  101         /* Look for an IPMI entry in the SMBIOS table. */
  102         if (!ipmi_smbios_identify(&info))
  103                 return (ENXIO);
  104 
  105         sc->ipmi_dev = dev;
  106 
  107         switch (info.iface_type) {
  108         case KCS_MODE:
  109                 mode = "KCS";
  110                 break;
  111         case SMIC_MODE:
  112                 mode = "SMIC";
  113                 break;
  114         case BT_MODE:
  115                 device_printf(dev, "BT mode is unsupported\n");
  116                 return (ENXIO);
  117         default:
  118                 device_printf(dev, "No IPMI interface found\n");
  119                 return (ENXIO);
  120         }
  121 
  122         device_printf(dev, "%s mode found at %s 0x%jx alignment 0x%x on %s\n",
  123             mode, info.io_mode ? "io" : "mem",
  124             (uintmax_t)info.address, info.offset,
  125             device_get_name(device_get_parent(dev)));
  126         if (info.io_mode)
  127                 type = SYS_RES_IOPORT;
  128         else
  129                 type = SYS_RES_MEMORY;
  130 
  131         sc->ipmi_io_rid = PCIR_BAR(0);
  132         sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
  133             &sc->ipmi_io_rid, RF_ACTIVE);
  134         sc->ipmi_io_type = type;
  135         sc->ipmi_io_spacing = info.offset;
  136 
  137         if (sc->ipmi_io_res[0] == NULL) {
  138                 device_printf(dev, "couldn't configure pci io res\n");
  139                 return (ENXIO);
  140         }
  141 
  142         sc->ipmi_irq_rid = 0;
  143         sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  144             &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
  145 
  146         switch (info.iface_type) {
  147         case KCS_MODE:
  148                 error = ipmi_kcs_attach(sc);
  149                 if (error)
  150                         goto bad;
  151                 break;
  152         case SMIC_MODE:
  153                 error = ipmi_smic_attach(sc);
  154                 if (error)
  155                         goto bad;
  156                 break;
  157         }
  158         error = ipmi_attach(dev);
  159         if (error)
  160                 goto bad;
  161 
  162         return (0);
  163 bad:
  164         ipmi_release_resources(dev);
  165         return (error);
  166 }
  167 
  168 static device_method_t ipmi_methods[] = {
  169         /* Device interface */
  170         DEVMETHOD(device_probe,     ipmi_pci_probe),
  171         DEVMETHOD(device_attach,    ipmi_pci_attach),
  172         DEVMETHOD(device_detach,    ipmi_detach),
  173         { 0, 0 }
  174 };
  175 
  176 static driver_t ipmi_pci_driver = {
  177         "ipmi",
  178         ipmi_methods,
  179         sizeof(struct ipmi_softc)
  180 };
  181 
  182 DRIVER_MODULE(ipmi_pci, pci, ipmi_pci_driver, 0, 0);
  183 
  184 /* Native IPMI on PCI driver. */
  185 
  186 static int
  187 ipmi2_pci_probe(device_t dev)
  188 {
  189 
  190         if (pci_get_class(dev) == PCIC_SERIALBUS &&
  191             pci_get_subclass(dev) == PCIS_SERIALBUS_IPMI) {
  192                 device_set_desc(dev, "IPMI System Interface");
  193                 return (BUS_PROBE_GENERIC);
  194         }
  195 
  196         return (ENXIO);
  197 }
  198 
  199 static int
  200 ipmi2_pci_attach(device_t dev)
  201 {
  202         struct ipmi_softc *sc;
  203         int error, iface, type;
  204 
  205         sc = device_get_softc(dev);
  206         sc->ipmi_dev = dev;
  207 
  208         /* Interface is determined by progif. */
  209         switch (pci_get_progif(dev)) {
  210         case PCIP_SERIALBUS_IPMI_SMIC:
  211                 iface = SMIC_MODE;
  212                 break;
  213         case PCIP_SERIALBUS_IPMI_KCS:
  214                 iface = KCS_MODE;
  215                 break;
  216         case PCIP_SERIALBUS_IPMI_BT:
  217                 iface = BT_MODE;
  218                 device_printf(dev, "BT interface unsupported\n");
  219                 return (ENXIO);
  220         default:
  221                 device_printf(dev, "Unsupported interface: %d\n",
  222                     pci_get_progif(dev));
  223                 return (ENXIO);
  224         }
  225 
  226         /* Check the BAR to determine our resource type. */
  227         sc->ipmi_io_rid = PCIR_BAR(0);
  228         if (PCI_BAR_IO(pci_read_config(dev, PCIR_BAR(0), 4)))
  229                 type = SYS_RES_IOPORT;
  230         else
  231                 type = SYS_RES_MEMORY;
  232         sc->ipmi_io_type = type;
  233         sc->ipmi_io_spacing = 1;
  234         sc->ipmi_io_res[0] = bus_alloc_resource_any(dev, type,
  235             &sc->ipmi_io_rid, RF_ACTIVE);
  236         if (sc->ipmi_io_res[0] == NULL) {
  237                 device_printf(dev, "couldn't map ports/memory\n");
  238                 return (ENXIO);
  239         }
  240 
  241         sc->ipmi_irq_rid = 0;
  242         sc->ipmi_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  243             &sc->ipmi_irq_rid, RF_SHAREABLE | RF_ACTIVE);
  244 
  245         switch (iface) {
  246         case KCS_MODE:
  247                 device_printf(dev, "using KSC interface\n");
  248 
  249                 /*
  250                  * We have to examine the resource directly to determine the
  251                  * alignment.
  252                  */
  253                 if (!ipmi_kcs_probe_align(sc)) {
  254                         device_printf(dev, "Unable to determine alignment\n");
  255                         error = ENXIO;
  256                         goto bad;
  257                 }
  258 
  259                 error = ipmi_kcs_attach(sc);
  260                 if (error)
  261                         goto bad;
  262                 break;
  263         case SMIC_MODE:
  264                 device_printf(dev, "using SMIC interface\n");
  265 
  266                 error = ipmi_smic_attach(sc);
  267                 if (error)
  268                         goto bad;
  269                 break;
  270         }
  271         error = ipmi_attach(dev);
  272         if (error)
  273                 goto bad;
  274 
  275         return (0);
  276 bad:
  277         ipmi_release_resources(dev);
  278         return (error);
  279 }
  280 
  281 static device_method_t ipmi2_methods[] = {
  282         /* Device interface */
  283         DEVMETHOD(device_probe,     ipmi2_pci_probe),
  284         DEVMETHOD(device_attach,    ipmi2_pci_attach),
  285         DEVMETHOD(device_detach,    ipmi_detach),
  286         { 0, 0 }
  287 };
  288 
  289 static driver_t ipmi2_pci_driver = {
  290         "ipmi",
  291         ipmi2_methods,
  292         sizeof(struct ipmi_softc)
  293 };
  294 
  295 DRIVER_MODULE(ipmi2_pci, pci, ipmi2_pci_driver, 0, 0);
  296 #ifdef ARCH_MAY_USE_EFI
  297 MODULE_DEPEND(ipmi2_pci, efirt, 1, 1, 1);
  298 #endif

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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