if_ral_pci.c

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    1 /*      $FreeBSD: releng/6.0/sys/dev/ral/if_ral_pci.c 149443 2005-08-25 05:01:24Z rwatson $     */
    2 
    3 /*-
    4  * Copyright (c) 2005
    5  *      Damien Bergamini <damien.bergamini@free.fr>
    6  *
    7  * Permission to use, copy, modify, and distribute this software for any
    8  * purpose with or without fee is hereby granted, provided that the above
    9  * copyright notice and this permission notice appear in all copies.
   10  *
   11  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   12  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   13  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   14  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   15  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   16  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   17  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   18  */
   19 
   20 #include <sys/cdefs.h>
   21 __FBSDID("$FreeBSD: releng/6.0/sys/dev/ral/if_ral_pci.c 149443 2005-08-25 05:01:24Z rwatson $");
   22 
   23 /*
   24  * PCI front-end for the Ralink RT2500 driver.
   25  */
   26 
   27 #include <sys/param.h>
   28 #include <sys/sysctl.h>
   29 #include <sys/sockio.h>
   30 #include <sys/mbuf.h>
   31 #include <sys/kernel.h>
   32 #include <sys/socket.h>
   33 #include <sys/systm.h>
   34 #include <sys/malloc.h>
   35 #include <sys/module.h>
   36 #include <sys/bus.h>
   37 #include <sys/endian.h>
   38 
   39 #include <machine/bus.h>
   40 #include <machine/resource.h>
   41 #include <machine/clock.h>
   42 #include <sys/rman.h>
   43 
   44 #include <net/bpf.h>
   45 #include <net/if.h>
   46 #include <net/if_arp.h>
   47 #include <net/ethernet.h>
   48 #include <net/if_dl.h>
   49 #include <net/if_media.h>
   50 #include <net/if_types.h>
   51 
   52 #include <net80211/ieee80211_var.h>
   53 #include <net80211/ieee80211_radiotap.h>
   54 
   55 #include <dev/pci/pcireg.h>
   56 #include <dev/pci/pcivar.h>
   57 
   58 #include <dev/ral/if_ralrate.h>
   59 #include <dev/ral/if_ralreg.h>
   60 #include <dev/ral/if_ralvar.h>
   61 
   62 MODULE_DEPEND(ral, pci, 1, 1, 1);
   63 MODULE_DEPEND(ral, wlan, 1, 1, 1);
   64 
   65 struct ral_pci_ident {
   66         uint16_t        vendor;
   67         uint16_t        device;
   68         const char      *name;
   69 };
   70 
   71 static const struct ral_pci_ident ral_pci_ids[] = {
   72         { 0x1814, 0x0201, "Ralink Technology RT2500" },
   73 
   74         { 0, 0, NULL }
   75 };
   76 
   77 static int ral_pci_probe(device_t);
   78 static int ral_pci_attach(device_t);
   79 static int ral_pci_suspend(device_t);
   80 static int ral_pci_resume(device_t);
   81 
   82 static device_method_t ral_pci_methods[] = {
   83         /* Device interface */
   84         DEVMETHOD(device_probe,         ral_pci_probe),
   85         DEVMETHOD(device_attach,        ral_pci_attach),
   86         DEVMETHOD(device_detach,        ral_detach),
   87         DEVMETHOD(device_suspend,       ral_pci_suspend),
   88         DEVMETHOD(device_resume,        ral_pci_resume),
   89 
   90         { 0, 0 }
   91 };
   92 
   93 static driver_t ral_pci_driver = {
   94         "ral",
   95         ral_pci_methods,
   96         sizeof (struct ral_softc)
   97 };
   98 
   99 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, 0, 0);
  100 DRIVER_MODULE(ral, cardbus, ral_pci_driver, ral_devclass, 0, 0);
  101 
  102 static int
  103 ral_pci_probe(device_t dev)
  104 {
  105         const struct ral_pci_ident *ident;
  106 
  107         for (ident = ral_pci_ids; ident->name != NULL; ident++) {
  108                 if (pci_get_vendor(dev) == ident->vendor &&
  109                     pci_get_device(dev) == ident->device) {
  110                         device_set_desc(dev, ident->name);
  111                         return 0;
  112                 }
  113         }
  114         return ENXIO;
  115 }
  116 
  117 /* Base Address Register */
  118 #define RAL_PCI_BAR0    0x10
  119 
  120 static int
  121 ral_pci_attach(device_t dev)
  122 {
  123         int error;
  124 
  125         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
  126                 device_printf(dev, "chip is in D%d power mode "
  127                     "-- setting to D0\n", pci_get_powerstate(dev));
  128                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
  129         }
  130 
  131         /* enable bus-mastering */
  132         pci_enable_busmaster(dev);
  133 
  134         error = ral_alloc(dev, RAL_PCI_BAR0);
  135         if (error != 0)
  136                 return error;
  137 
  138         error = ral_attach(dev);
  139         if (error != 0)
  140                 ral_free(dev);
  141 
  142         return error;
  143 }
  144 
  145 static int
  146 ral_pci_suspend(device_t dev)
  147 {
  148         struct ral_softc *sc = device_get_softc(dev);
  149 
  150         ral_stop(sc);
  151 
  152         return 0;
  153 }
  154 
  155 static int
  156 ral_pci_resume(device_t dev)
  157 {
  158         struct ral_softc *sc = device_get_softc(dev);
  159         struct ifnet *ifp = sc->sc_ic.ic_ifp;
  160 
  161         if (ifp->if_flags & IFF_UP) {
  162                 ifp->if_init(ifp->if_softc);
  163                 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
  164                         ifp->if_start(ifp);
  165         }
  166 
  167         return 0;
  168 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/ral/if_ral_pci.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ral/if_ral_pci.c