if_ral_pci.c

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    1 /*      $FreeBSD: releng/8.0/sys/dev/ral/if_ral_pci.c 189575 2009-03-09 13:23:54Z imp $ */
    2 
    3 /*-
    4  * Copyright (c) 2005, 2006
    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/8.0/sys/dev/ral/if_ral_pci.c 189575 2009-03-09 13:23:54Z imp $");
   22 
   23 /*
   24  * PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 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 <sys/rman.h>
   42 
   43 #include <net/bpf.h>
   44 #include <net/if.h>
   45 #include <net/if_arp.h>
   46 #include <net/ethernet.h>
   47 #include <net/if_dl.h>
   48 #include <net/if_media.h>
   49 #include <net/if_types.h>
   50 
   51 #include <net80211/ieee80211_var.h>
   52 #include <net80211/ieee80211_radiotap.h>
   53 #include <net80211/ieee80211_amrr.h>
   54 
   55 #include <dev/pci/pcireg.h>
   56 #include <dev/pci/pcivar.h>
   57 
   58 #include <dev/ral/rt2560var.h>
   59 #include <dev/ral/rt2661var.h>
   60 
   61 MODULE_DEPEND(ral, pci, 1, 1, 1);
   62 MODULE_DEPEND(ral, firmware, 1, 1, 1);
   63 MODULE_DEPEND(ral, wlan, 1, 1, 1);
   64 MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1);
   65 
   66 struct ral_pci_ident {
   67         uint16_t        vendor;
   68         uint16_t        device;
   69         const char      *name;
   70 };
   71 
   72 static const struct ral_pci_ident ral_pci_ids[] = {
   73         { 0x1814, 0x0201, "Ralink Technology RT2560" },
   74         { 0x1814, 0x0301, "Ralink Technology RT2561S" },
   75         { 0x1814, 0x0302, "Ralink Technology RT2561" },
   76         { 0x1814, 0x0401, "Ralink Technology RT2661" },
   77 
   78         { 0, 0, NULL }
   79 };
   80 
   81 static struct ral_opns {
   82         int     (*attach)(device_t, int);
   83         int     (*detach)(void *);
   84         void    (*shutdown)(void *);
   85         void    (*suspend)(void *);
   86         void    (*resume)(void *);
   87         void    (*intr)(void *);
   88 
   89 }  ral_rt2560_opns = {
   90         rt2560_attach,
   91         rt2560_detach,
   92         rt2560_stop,
   93         rt2560_stop,
   94         rt2560_resume,
   95         rt2560_intr
   96 
   97 }, ral_rt2661_opns = {
   98         rt2661_attach,
   99         rt2661_detach,
  100         rt2661_shutdown,
  101         rt2661_suspend,
  102         rt2661_resume,
  103         rt2661_intr
  104 };
  105 
  106 struct ral_pci_softc {
  107         union {
  108                 struct rt2560_softc sc_rt2560;
  109                 struct rt2661_softc sc_rt2661;
  110         } u;
  111 
  112         struct ral_opns         *sc_opns;
  113         int                     irq_rid;
  114         int                     mem_rid;
  115         struct resource         *irq;
  116         struct resource         *mem;
  117         void                    *sc_ih;
  118 };
  119 
  120 static int ral_pci_probe(device_t);
  121 static int ral_pci_attach(device_t);
  122 static int ral_pci_detach(device_t);
  123 static int ral_pci_shutdown(device_t);
  124 static int ral_pci_suspend(device_t);
  125 static int ral_pci_resume(device_t);
  126 
  127 static device_method_t ral_pci_methods[] = {
  128         /* Device interface */
  129         DEVMETHOD(device_probe,         ral_pci_probe),
  130         DEVMETHOD(device_attach,        ral_pci_attach),
  131         DEVMETHOD(device_detach,        ral_pci_detach),
  132         DEVMETHOD(device_shutdown,      ral_pci_shutdown),
  133         DEVMETHOD(device_suspend,       ral_pci_suspend),
  134         DEVMETHOD(device_resume,        ral_pci_resume),
  135 
  136         { 0, 0 }
  137 };
  138 
  139 static driver_t ral_pci_driver = {
  140         "ral",
  141         ral_pci_methods,
  142         sizeof (struct ral_pci_softc)
  143 };
  144 
  145 static devclass_t ral_devclass;
  146 
  147 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, 0, 0);
  148 
  149 static int
  150 ral_pci_probe(device_t dev)
  151 {
  152         const struct ral_pci_ident *ident;
  153 
  154         for (ident = ral_pci_ids; ident->name != NULL; ident++) {
  155                 if (pci_get_vendor(dev) == ident->vendor &&
  156                     pci_get_device(dev) == ident->device) {
  157                         device_set_desc(dev, ident->name);
  158                         return 0;
  159                 }
  160         }
  161         return ENXIO;
  162 }
  163 
  164 /* Base Address Register */
  165 #define RAL_PCI_BAR0    0x10
  166 
  167 static int
  168 ral_pci_attach(device_t dev)
  169 {
  170         struct ral_pci_softc *psc = device_get_softc(dev);
  171         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  172         int error;
  173 
  174         if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) {
  175                 device_printf(dev, "chip is in D%d power mode "
  176                     "-- setting to D0\n", pci_get_powerstate(dev));
  177                 pci_set_powerstate(dev, PCI_POWERSTATE_D0);
  178         }
  179 
  180         /* enable bus-mastering */
  181         pci_enable_busmaster(dev);
  182 
  183         psc->sc_opns = (pci_get_device(dev) == 0x0201) ? &ral_rt2560_opns :
  184             &ral_rt2661_opns;
  185 
  186         psc->mem_rid = RAL_PCI_BAR0;
  187         psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &psc->mem_rid,
  188             RF_ACTIVE);
  189         if (psc->mem == NULL) {
  190                 device_printf(dev, "could not allocate memory resource\n");
  191                 return ENXIO;
  192         }
  193 
  194         sc->sc_st = rman_get_bustag(psc->mem);
  195         sc->sc_sh = rman_get_bushandle(psc->mem);
  196         sc->sc_invalid = 1;
  197         
  198         psc->irq_rid = 0;
  199         psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &psc->irq_rid,
  200             RF_ACTIVE | RF_SHAREABLE);
  201         if (psc->irq == NULL) {
  202                 device_printf(dev, "could not allocate interrupt resource\n");
  203                 return ENXIO;
  204         }
  205 
  206         error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
  207         if (error != 0)
  208                 return error;
  209 
  210         /*
  211          * Hook our interrupt after all initialization is complete.
  212          */
  213         error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  214             NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
  215         if (error != 0) {
  216                 device_printf(dev, "could not set up interrupt\n");
  217                 return error;
  218         }
  219         sc->sc_invalid = 0;
  220         
  221         return 0;
  222 }
  223 
  224 static int
  225 ral_pci_detach(device_t dev)
  226 {
  227         struct ral_pci_softc *psc = device_get_softc(dev);
  228         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  229         
  230         /* check if device was removed */
  231         sc->sc_invalid = !bus_child_present(dev);
  232         
  233         (*psc->sc_opns->detach)(psc);
  234 
  235         bus_generic_detach(dev);
  236         bus_teardown_intr(dev, psc->irq, psc->sc_ih);
  237         bus_release_resource(dev, SYS_RES_IRQ, psc->irq_rid, psc->irq);
  238 
  239         bus_release_resource(dev, SYS_RES_MEMORY, psc->mem_rid, psc->mem);
  240 
  241         return 0;
  242 }
  243 
  244 static int
  245 ral_pci_shutdown(device_t dev)
  246 {
  247         struct ral_pci_softc *psc = device_get_softc(dev);
  248 
  249         (*psc->sc_opns->shutdown)(psc);
  250 
  251         return 0;
  252 }
  253 
  254 static int
  255 ral_pci_suspend(device_t dev)
  256 {
  257         struct ral_pci_softc *psc = device_get_softc(dev);
  258 
  259         (*psc->sc_opns->suspend)(psc);
  260 
  261         return 0;
  262 }
  263 
  264 static int
  265 ral_pci_resume(device_t dev)
  266 {
  267         struct ral_pci_softc *psc = device_get_softc(dev);
  268 
  269         (*psc->sc_opns->resume)(psc);
  270 
  271         return 0;
  272 }

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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