if_sbni_pci.c

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    1 /*-
    2  * Copyright (c) 1997-2001 Granch, Ltd. All rights reserved.
    3  * Author: Denis I.Timofeev <timofeev@granch.ru>
    4  *
    5  * Redistributon 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 unmodified, this list of conditions, and the following
   10  *    disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  */
   27 
   28 #include <sys/cdefs.h>
   29 __FBSDID("$FreeBSD$");
   30 
   31 #include <sys/param.h>
   32 #include <sys/systm.h>
   33 #include <sys/socket.h>
   34 #include <sys/bus.h>
   35 #include <sys/kernel.h>
   36 #include <sys/module.h>
   37 #include <machine/bus.h>
   38 #include <machine/resource.h>
   39 #include <sys/rman.h>
   40 #include <sys/malloc.h>
   41 
   42 #include <net/if.h>
   43 #include <net/ethernet.h>
   44 #include <net/if_arp.h>
   45 
   46 #include <dev/pci/pcivar.h>
   47 #include <dev/pci/pcireg.h>
   48 
   49 #include <dev/sbni/if_sbnireg.h>
   50 #include <dev/sbni/if_sbnivar.h>
   51 
   52 static int      sbni_pci_probe(device_t);
   53 static int      sbni_pci_attach(device_t);
   54 static int      sbni_pci_detach(device_t);
   55 
   56 static device_method_t sbni_pci_methods[] = {
   57         /* Device interface */
   58         DEVMETHOD(device_probe, sbni_pci_probe),
   59         DEVMETHOD(device_attach, sbni_pci_attach),
   60         DEVMETHOD(device_detach, sbni_pci_detach),
   61         { 0, 0 }
   62 };
   63 
   64 static driver_t sbni_pci_driver = {
   65         "sbni",
   66         sbni_pci_methods,
   67         sizeof(struct sbni_softc)
   68 };
   69 
   70 DRIVER_MODULE(sbni, pci, sbni_pci_driver, 0, 0);
   71 MODULE_DEPEND(sbni, pci, 1, 1, 1);
   72 
   73 static int
   74 sbni_pci_probe(device_t dev)
   75 {
   76         struct sbni_softc  *sc;
   77 
   78         if (pci_get_vendor(dev) != SBNI_PCI_VENDOR ||
   79             pci_get_device(dev) != SBNI_PCI_DEVICE)
   80                 return (ENXIO);
   81 
   82         sc = device_get_softc(dev);
   83         if (pci_get_subdevice(dev) == 2) {
   84                 sc->slave_sc = malloc(sizeof(struct sbni_softc),
   85                                       M_DEVBUF, M_NOWAIT | M_ZERO);
   86                 if (!sc->slave_sc)
   87                         return (ENOMEM);
   88                 device_set_desc(dev, "Granch SBNI12/PCI Dual adapter");
   89         } else
   90                 device_set_desc(dev, "Granch SBNI12/PCI adapter");
   91 
   92         sc->io_rid = PCIR_BAR(0);
   93         sc->io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT,
   94                                             &sc->io_rid, RF_ACTIVE);
   95         if (!sc->io_res) {
   96                 device_printf(dev, "cannot allocate io ports!\n");
   97                 if (sc->slave_sc)
   98                         free(sc->slave_sc, M_DEVBUF);
   99                 return (ENOENT);
  100         }
  101 
  102         if (sc->slave_sc) {
  103                 sc->slave_sc->io_res = sc->io_res;
  104                 sc->slave_sc->io_off = 4;
  105         }
  106         if (sbni_probe(sc) != 0) {
  107                 sbni_release_resources(sc);
  108                 if (sc->slave_sc)
  109                         free(sc->slave_sc, M_DEVBUF);
  110                 return (ENXIO);
  111         }
  112 
  113         return (0);
  114 }
  115 
  116 static int
  117 sbni_pci_attach(device_t dev)
  118 {
  119         struct sbni_softc *sc;
  120         struct sbni_flags flags;
  121         int error;
  122 
  123         sc = device_get_softc(dev);
  124         sc->dev = dev;
  125 
  126         sc->irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid,
  127                                              RF_SHAREABLE);
  128 
  129         if (sc->irq_res == NULL) {
  130                 device_printf(dev, "cannot claim irq!\n");
  131                 error = ENOENT;
  132                 goto attach_failed;
  133         }
  134 
  135         memset(&flags, 0, sizeof(flags));
  136 
  137         error = sbni_attach(sc, device_get_unit(dev) * 2, flags);
  138         if (error) {
  139                 device_printf(dev, "cannot initialize driver\n");
  140                 goto attach_failed;
  141         }
  142         if (sc->slave_sc) {
  143                 error = sbni_attach(sc->slave_sc, device_get_unit(dev) * 2 + 1,
  144                     flags);
  145                 if (error) {
  146                         device_printf(dev, "cannot initialize slave\n");
  147                         sbni_detach(sc);
  148                         goto attach_failed;
  149                 }
  150         }
  151 
  152         if (sc->irq_res) {
  153                 error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET |
  154                     INTR_MPSAFE, NULL, sbni_intr, sc, &sc->irq_handle);
  155                 if (error) {
  156                         device_printf(dev, "bus_setup_intr\n");
  157                         sbni_detach(sc);
  158                         if (sc->slave_sc)
  159                                 sbni_detach(sc);
  160                         goto attach_failed;
  161                 }
  162         }
  163         return (0);
  164 
  165 attach_failed:
  166         sbni_release_resources(sc);
  167         if (sc->slave_sc)
  168                 free(sc->slave_sc, M_DEVBUF);
  169         return (error);
  170 }
  171 
  172 static int
  173 sbni_pci_detach(device_t dev)
  174 {
  175         struct sbni_softc *sc;
  176 
  177         sc = device_get_softc(dev);
  178         sbni_detach(sc);
  179         if (sc->slave_sc)
  180                 sbni_detach(sc);
  181 
  182         sbni_release_resources(sc);
  183         if (sc->slave_sc)
  184                 free(sc->slave_sc, M_DEVBUF);
  185         return (0);
  186 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/sbni/if_sbni_pci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/sbni/if_sbni_pci.c