The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/an/if_an_pci.c

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    1 /*
    2  * Copyright (c) 1997, 1998, 1999
    3  *      Bill Paul <wpaul@ctr.columbia.edu>.  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  * 3. All advertising materials mentioning features or use of this software
   14  *    must display the following acknowledgement:
   15  *      This product includes software developed by Bill Paul.
   16  * 4. Neither the name of the author nor the names of any co-contributors
   17  *    may be used to endorse or promote products derived from this software
   18  *    without specific prior written permission.
   19  *
   20  * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
   21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   23  * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
   24  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   25  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   26  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   27  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   28  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   29  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   30  * THE POSSIBILITY OF SUCH DAMAGE.
   31  *
   32  * $FreeBSD: releng/5.0/sys/dev/an/if_an_pci.c 106937 2002-11-14 23:54:55Z sam $
   33  */
   34 
   35 /*
   36  * This is a PCI shim for the Aironet PC4500/4800 wireless network
   37  * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
   38  * which all have basically the same interface. The ISA and PCI cards
   39  * are actually bridge adapters with PCMCIA cards inserted into them,
   40  * however they appear as normal PCI or ISA devices to the host.
   41  *
   42  * All we do here is handle the PCI probe and attach and set up an
   43  * interrupt handler entry point. The PCI version of the card uses
   44  * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
   45  * multiple PCI address space mappings. The primary mapping at PCI
   46  * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
   47  * The I/O address of the Aironet is actually at register 0x18, which
   48  * is the local bus mapping register for bus space 0. There are also
   49  * registers for additional register spaces at registers 0x1C and
   50  * 0x20, but these are unused in the Aironet devices. To find out
   51  * more, you need a datasheet for the 9050 from PLX, but you have
   52  * to go through their sales office to get it. Bleh.
   53  */
   54 
   55 #include "opt_inet.h"
   56 
   57 #ifdef INET
   58 #define ANCACHE
   59 #endif
   60 
   61 #include <sys/param.h>
   62 #include <sys/systm.h>
   63 #include <sys/sockio.h>
   64 #include <sys/mbuf.h>
   65 #include <sys/kernel.h>
   66 #include <sys/socket.h>
   67 
   68 #include <sys/module.h>
   69 #include <sys/bus.h>
   70 #include <machine/bus.h>
   71 #include <sys/rman.h>
   72 #include <sys/lock.h>
   73 #include <sys/mutex.h>
   74 #include <machine/resource.h>
   75 
   76 #include <net/if.h>
   77 #include <net/if_arp.h>
   78 #include <net/ethernet.h>
   79 #include <net/if_dl.h>
   80 #include <net/if_media.h>
   81 
   82 #include <pci/pcireg.h>
   83 #include <pci/pcivar.h>
   84 
   85 #ifndef lint
   86 static const char rcsid[] =
   87  "$FreeBSD: releng/5.0/sys/dev/an/if_an_pci.c 106937 2002-11-14 23:54:55Z sam $";
   88 #endif
   89 
   90 #include <dev/an/if_aironet_ieee.h>
   91 #include <dev/an/if_anreg.h>
   92 
   93 struct an_type {
   94         u_int16_t               an_vid;
   95         u_int16_t               an_did;
   96         char                    *an_name;
   97 };
   98 
   99 #define AIRONET_VENDORID        0x14B9
  100 #define AIRONET_DEVICEID_35x    0x0350
  101 #define AIRONET_DEVICEID_4500   0x4500
  102 #define AIRONET_DEVICEID_4800   0x4800
  103 #define AIRONET_DEVICEID_4xxx   0x0001
  104 #define AN_PCI_PLX_LOIO         0x14    /* PLX chip iobase */
  105 #define AN_PCI_LOIO             0x18    /* Aironet iobase */
  106 
  107 static struct an_type an_devs[] = {
  108         { AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
  109         { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
  110         { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
  111         { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
  112         { 0, 0, NULL }
  113 };
  114 
  115 static int an_probe_pci         (device_t);
  116 static int an_attach_pci        (device_t);
  117 static int an_detach_pci        (device_t);
  118 
  119 static int
  120 an_probe_pci(device_t dev)
  121 {
  122         struct an_type          *t;
  123 
  124         t = an_devs;
  125 
  126         while (t->an_name != NULL) {
  127                 if (pci_get_vendor(dev) == t->an_vid &&
  128                     pci_get_device(dev) == t->an_did) {
  129                         device_set_desc(dev, t->an_name);
  130                         return(0);
  131                 }
  132                 t++;
  133         }
  134 
  135         return(ENXIO);
  136 }
  137 
  138 static int
  139 an_attach_pci(dev)
  140         device_t                dev;
  141 {
  142         u_int32_t               command;
  143         struct an_softc         *sc;
  144         int                     unit, flags, error = 0;
  145 
  146         sc = device_get_softc(dev);
  147         unit = device_get_unit(dev);
  148         flags = device_get_flags(dev);
  149         bzero(sc, sizeof(struct an_softc));
  150 
  151         /*
  152          * Map control/status registers.
  153          */
  154         command = pci_read_config(dev, PCIR_COMMAND, 4);
  155         command |= PCIM_CMD_PORTEN;
  156         pci_write_config(dev, PCIR_COMMAND, command, 4);
  157         command = pci_read_config(dev, PCIR_COMMAND, 4);
  158 
  159         if (!(command & PCIM_CMD_PORTEN)) {
  160                 printf("an%d: failed to enable I/O ports!\n", unit);
  161                 error = ENXIO;
  162                 goto fail;
  163         }
  164 
  165         sc->port_rid = AN_PCI_LOIO;
  166         error = an_alloc_port(dev, sc->port_rid, 1);
  167 
  168         if (error) {
  169                 printf("an%d: couldn't map ports\n", unit);
  170                 goto fail;
  171         }
  172 
  173         sc->an_btag = rman_get_bustag(sc->port_res);
  174         sc->an_bhandle = rman_get_bushandle(sc->port_res);
  175 
  176         /* Allocate interrupt */
  177         error = an_alloc_irq(dev, 0, RF_SHAREABLE);
  178         if (error) {
  179                 an_release_resources(dev);
  180                 goto fail;
  181         }
  182 
  183         error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
  184             an_intr, sc, &sc->irq_handle);
  185         if (error) {
  186                 an_release_resources(dev);
  187                 goto fail;
  188         }
  189 
  190         sc->an_dev = dev;
  191         error = an_attach(sc, device_get_unit(dev), flags);
  192 
  193 fail:
  194         return(error);
  195 }
  196 
  197 static int
  198 an_detach_pci(device_t dev)
  199 {
  200         struct an_softc         *sc = device_get_softc(dev);
  201         struct ifnet            *ifp = &sc->arpcom.ac_if;
  202 
  203         an_stop(sc);
  204         ifmedia_removeall(&sc->an_ifmedia);
  205         ether_ifdetach(ifp);
  206         bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
  207         an_release_resources(dev);
  208 
  209         return (0);
  210 }
  211 
  212 static device_method_t an_pci_methods[] = {
  213         /* Device interface */
  214         DEVMETHOD(device_probe,         an_probe_pci),
  215         DEVMETHOD(device_attach,        an_attach_pci),
  216         DEVMETHOD(device_detach,        an_detach_pci),
  217         DEVMETHOD(device_shutdown,      an_shutdown),
  218         { 0, 0 }
  219 };
  220 
  221 static driver_t an_pci_driver = {
  222         "an",
  223         an_pci_methods,
  224         sizeof(struct an_softc),
  225 };
  226 
  227 static devclass_t an_devclass;
  228 
  229 DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0);

Cache object: 02016287a3e93168d422a681f2af04ff


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