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

     /*
      * Copyright (c) 1997, 1998, 1999
      *      Bill Paul <wpaul@ctr.columbia.edu>.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
      *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Bill Paul.
     * 4. Neither the name of the author nor the names of any co-contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     * THE POSSIBILITY OF SUCH DAMAGE.
     *
     * $FreeBSD: releng/5.0/sys/dev/an/if_an_pci.c 106937 2002-11-14 23:54:55Z sam $
     */
    
    /*
     * This is a PCI shim for the Aironet PC4500/4800 wireless network
     * driver. Aironet makes PCMCIA, ISA and PCI versions of these devices,
     * which all have basically the same interface. The ISA and PCI cards
     * are actually bridge adapters with PCMCIA cards inserted into them,
     * however they appear as normal PCI or ISA devices to the host.
     *
     * All we do here is handle the PCI probe and attach and set up an
     * interrupt handler entry point. The PCI version of the card uses
     * a PLX 9050 PCI to "dumb bus" bridge chip, which provides us with
     * multiple PCI address space mappings. The primary mapping at PCI
     * register 0x14 is for the PLX chip itself, *NOT* the Aironet card.
     * The I/O address of the Aironet is actually at register 0x18, which
     * is the local bus mapping register for bus space 0. There are also
     * registers for additional register spaces at registers 0x1C and
     * 0x20, but these are unused in the Aironet devices. To find out
     * more, you need a datasheet for the 9050 from PLX, but you have
     * to go through their sales office to get it. Bleh.
     */
    
    #include "opt_inet.h"
    
    #ifdef INET
    #define ANCACHE
    #endif
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/sockio.h>
    #include <sys/mbuf.h>
    #include <sys/kernel.h>
    #include <sys/socket.h>
    
    #include <sys/module.h>
    #include <sys/bus.h>
    #include <machine/bus.h>
    #include <sys/rman.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <machine/resource.h>
    
    #include <net/if.h>
    #include <net/if_arp.h>
    #include <net/ethernet.h>
    #include <net/if_dl.h>
    #include <net/if_media.h>
    
    #include <pci/pcireg.h>
    #include <pci/pcivar.h>
    
    #ifndef lint
    static const char rcsid[] =
     "$FreeBSD: releng/5.0/sys/dev/an/if_an_pci.c 106937 2002-11-14 23:54:55Z sam $";
    #endif
    
    #include <dev/an/if_aironet_ieee.h>
    #include <dev/an/if_anreg.h>
    
    struct an_type {
            u_int16_t               an_vid;
            u_int16_t               an_did;
            char                    *an_name;
    };
    
    #define AIRONET_VENDORID        0x14B9
   #define AIRONET_DEVICEID_35x    0x0350
   #define AIRONET_DEVICEID_4500   0x4500
   #define AIRONET_DEVICEID_4800   0x4800
   #define AIRONET_DEVICEID_4xxx   0x0001
   #define AN_PCI_PLX_LOIO         0x14    /* PLX chip iobase */
   #define AN_PCI_LOIO             0x18    /* Aironet iobase */
   
   static struct an_type an_devs[] = {
           { AIRONET_VENDORID, AIRONET_DEVICEID_35x, "Cisco Aironet 350 Series" },
           { AIRONET_VENDORID, AIRONET_DEVICEID_4500, "Aironet PCI4500" },
           { AIRONET_VENDORID, AIRONET_DEVICEID_4800, "Aironet PCI4800" },
           { AIRONET_VENDORID, AIRONET_DEVICEID_4xxx, "Aironet PCI4500/PCI4800" },
           { 0, 0, NULL }
   };
   
   static int an_probe_pci         (device_t);
   static int an_attach_pci        (device_t);
   static int an_detach_pci        (device_t);
   
   static int
   an_probe_pci(device_t dev)
   {
           struct an_type          *t;
   
           t = an_devs;
   
           while (t->an_name != NULL) {
                   if (pci_get_vendor(dev) == t->an_vid &&
                       pci_get_device(dev) == t->an_did) {
                           device_set_desc(dev, t->an_name);
                           return(0);
                   }
                   t++;
           }
   
           return(ENXIO);
   }
   
   static int
   an_attach_pci(dev)
           device_t                dev;
   {
           u_int32_t               command;
           struct an_softc         *sc;
           int                     unit, flags, error = 0;
   
           sc = device_get_softc(dev);
           unit = device_get_unit(dev);
           flags = device_get_flags(dev);
           bzero(sc, sizeof(struct an_softc));
   
           /*
            * Map control/status registers.
            */
           command = pci_read_config(dev, PCIR_COMMAND, 4);
           command |= PCIM_CMD_PORTEN;
           pci_write_config(dev, PCIR_COMMAND, command, 4);
           command = pci_read_config(dev, PCIR_COMMAND, 4);
   
           if (!(command & PCIM_CMD_PORTEN)) {
                   printf("an%d: failed to enable I/O ports!\n", unit);
                   error = ENXIO;
                   goto fail;
           }
   
           sc->port_rid = AN_PCI_LOIO;
           error = an_alloc_port(dev, sc->port_rid, 1);
   
           if (error) {
                   printf("an%d: couldn't map ports\n", unit);
                   goto fail;
           }
   
           sc->an_btag = rman_get_bustag(sc->port_res);
           sc->an_bhandle = rman_get_bushandle(sc->port_res);
   
           /* Allocate interrupt */
           error = an_alloc_irq(dev, 0, RF_SHAREABLE);
           if (error) {
                   an_release_resources(dev);
                   goto fail;
           }
   
           error = bus_setup_intr(dev, sc->irq_res, INTR_TYPE_NET,
               an_intr, sc, &sc->irq_handle);
           if (error) {
                   an_release_resources(dev);
                   goto fail;
           }
   
           sc->an_dev = dev;
           error = an_attach(sc, device_get_unit(dev), flags);
   
   fail:
           return(error);
   }
   
   static int
   an_detach_pci(device_t dev)
   {
           struct an_softc         *sc = device_get_softc(dev);
           struct ifnet            *ifp = &sc->arpcom.ac_if;
   
           an_stop(sc);
           ifmedia_removeall(&sc->an_ifmedia);
           ether_ifdetach(ifp);
           bus_teardown_intr(dev, sc->irq_res, sc->irq_handle);
           an_release_resources(dev);
   
           return (0);
   }
   
   static device_method_t an_pci_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         an_probe_pci),
           DEVMETHOD(device_attach,        an_attach_pci),
           DEVMETHOD(device_detach,        an_detach_pci),
           DEVMETHOD(device_shutdown,      an_shutdown),
           { 0, 0 }
   };
   
   static driver_t an_pci_driver = {
           "an",
           an_pci_methods,
           sizeof(struct an_softc),
   };
   
   static devclass_t an_devclass;
   
   DRIVER_MODULE(if_an, pci, an_pci_driver, an_devclass, 0, 0);

Cache object: 02016287a3e93168d422a681f2af04ff