if_ral_pci.c

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    1 /*-
    2  * Copyright (c) 2005, 2006
    3  *      Damien Bergamini <damien.bergamini@free.fr>
    4  *
    5  * Permission to use, copy, modify, and distribute this software for any
    6  * purpose with or without fee is hereby granted, provided that the above
    7  * copyright notice and this permission notice appear in all copies.
    8  *
    9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
   11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
   12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
   13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
   14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
   15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
   16  */
   17 
   18 #include <sys/cdefs.h>
   19 __FBSDID("$FreeBSD$");
   20 
   21 /*
   22  * PCI/Cardbus front-end for the Ralink RT2560/RT2561/RT2561S/RT2661 driver.
   23  */
   24 
   25 #include <sys/param.h>
   26 #include <sys/systm.h>
   27 #include <sys/bus.h>
   28 #include <sys/kernel.h>
   29 #include <sys/lock.h>
   30 #include <sys/malloc.h>
   31 #include <sys/module.h>
   32 #include <sys/mutex.h>
   33 #include <sys/rman.h>
   34 #include <sys/socket.h>
   35 
   36 #include <machine/bus.h>
   37 #include <machine/resource.h>
   38 
   39 #include <net/ethernet.h>
   40 #include <net/if.h>
   41 #include <net/if_media.h>
   42 #include <net/route.h>
   43 
   44 #include <net80211/ieee80211_var.h>
   45 #include <net80211/ieee80211_radiotap.h>
   46 
   47 #include <dev/pci/pcireg.h>
   48 #include <dev/pci/pcivar.h>
   49 
   50 #include <dev/ral/rt2560var.h>
   51 #include <dev/ral/rt2661var.h>
   52 #include <dev/ral/rt2860var.h>
   53 
   54 MODULE_DEPEND(ral, pci, 1, 1, 1);
   55 MODULE_DEPEND(ral, firmware, 1, 1, 1);
   56 MODULE_DEPEND(ral, wlan, 1, 1, 1);
   57 MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1);
   58 
   59 static int ral_msi_disable;
   60 TUNABLE_INT("hw.ral.msi_disable", &ral_msi_disable);
   61 
   62 struct ral_pci_ident {
   63         uint16_t        vendor;
   64         uint16_t        device;
   65         const char      *name;
   66 };
   67 
   68 static const struct ral_pci_ident ral_pci_ids[] = {
   69         { 0x1432, 0x7708, "Edimax RT2860" },
   70         { 0x1432, 0x7711, "Edimax RT3591" },
   71         { 0x1432, 0x7722, "Edimax RT3591" },
   72         { 0x1432, 0x7727, "Edimax RT2860" },
   73         { 0x1432, 0x7728, "Edimax RT2860" },
   74         { 0x1432, 0x7738, "Edimax RT2860" },
   75         { 0x1432, 0x7748, "Edimax RT2860" },
   76         { 0x1432, 0x7758, "Edimax RT2860" },
   77         { 0x1432, 0x7768, "Edimax RT2860" },
   78         { 0x1462, 0x891a, "MSI RT3090" },
   79         { 0x1814, 0x0201, "Ralink Technology RT2560" },
   80         { 0x1814, 0x0301, "Ralink Technology RT2561S" },
   81         { 0x1814, 0x0302, "Ralink Technology RT2561" },
   82         { 0x1814, 0x0401, "Ralink Technology RT2661" },
   83         { 0x1814, 0x0601, "Ralink Technology RT2860" },
   84         { 0x1814, 0x0681, "Ralink Technology RT2890" },
   85         { 0x1814, 0x0701, "Ralink Technology RT2760" },
   86         { 0x1814, 0x0781, "Ralink Technology RT2790" },
   87         { 0x1814, 0x3060, "Ralink Technology RT3060" },
   88         { 0x1814, 0x3062, "Ralink Technology RT3062" },
   89         { 0x1814, 0x3090, "Ralink Technology RT3090" },
   90         { 0x1814, 0x3091, "Ralink Technology RT3091" },
   91         { 0x1814, 0x3092, "Ralink Technology RT3092" },
   92         { 0x1814, 0x3390, "Ralink Technology RT3390" },
   93         { 0x1814, 0x3562, "Ralink Technology RT3562" },
   94         { 0x1814, 0x3592, "Ralink Technology RT3592" },
   95         { 0x1814, 0x3593, "Ralink Technology RT3593" },
   96         { 0x1814, 0x5390, "Ralink Technology RT5390" },
   97         { 0x1814, 0x539a, "Ralink Technology RT5390" },
   98         { 0x1814, 0x539f, "Ralink Technology RT5390" },
   99         { 0x1a3b, 0x1059, "AWT RT2890" },
  100         { 0, 0, NULL }
  101 };
  102 
  103 static const struct ral_opns {
  104         int     (*attach)(device_t, int);
  105         int     (*detach)(void *);
  106         void    (*shutdown)(void *);
  107         void    (*suspend)(void *);
  108         void    (*resume)(void *);
  109         void    (*intr)(void *);
  110 
  111 }  ral_rt2560_opns = {
  112         rt2560_attach,
  113         rt2560_detach,
  114         rt2560_stop,
  115         rt2560_stop,
  116         rt2560_resume,
  117         rt2560_intr
  118 
  119 }, ral_rt2661_opns = {
  120         rt2661_attach,
  121         rt2661_detach,
  122         rt2661_shutdown,
  123         rt2661_suspend,
  124         rt2661_resume,
  125         rt2661_intr
  126 }, ral_rt2860_opns = {
  127         rt2860_attach,
  128         rt2860_detach,
  129         rt2860_shutdown,
  130         rt2860_suspend,
  131         rt2860_resume,
  132         rt2860_intr
  133 };
  134 
  135 struct ral_pci_softc {
  136         union {
  137                 struct rt2560_softc sc_rt2560;
  138                 struct rt2661_softc sc_rt2661;
  139                 struct rt2860_softc sc_rt2860;
  140         } u;
  141 
  142         const struct ral_opns   *sc_opns;
  143         struct resource         *irq;
  144         struct resource         *mem;
  145         void                    *sc_ih;
  146 };
  147 
  148 static int ral_pci_probe(device_t);
  149 static int ral_pci_attach(device_t);
  150 static int ral_pci_detach(device_t);
  151 static int ral_pci_shutdown(device_t);
  152 static int ral_pci_suspend(device_t);
  153 static int ral_pci_resume(device_t);
  154 
  155 static device_method_t ral_pci_methods[] = {
  156         /* Device interface */
  157         DEVMETHOD(device_probe,         ral_pci_probe),
  158         DEVMETHOD(device_attach,        ral_pci_attach),
  159         DEVMETHOD(device_detach,        ral_pci_detach),
  160         DEVMETHOD(device_shutdown,      ral_pci_shutdown),
  161         DEVMETHOD(device_suspend,       ral_pci_suspend),
  162         DEVMETHOD(device_resume,        ral_pci_resume),
  163 
  164         DEVMETHOD_END
  165 };
  166 
  167 static driver_t ral_pci_driver = {
  168         "ral",
  169         ral_pci_methods,
  170         sizeof (struct ral_pci_softc)
  171 };
  172 
  173 static devclass_t ral_devclass;
  174 
  175 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, NULL, NULL);
  176 
  177 static int
  178 ral_pci_probe(device_t dev)
  179 {
  180         const struct ral_pci_ident *ident;
  181 
  182         for (ident = ral_pci_ids; ident->name != NULL; ident++) {
  183                 if (pci_get_vendor(dev) == ident->vendor &&
  184                     pci_get_device(dev) == ident->device) {
  185                         device_set_desc(dev, ident->name);
  186                         return (BUS_PROBE_DEFAULT);
  187                 }
  188         }
  189         return ENXIO;
  190 }
  191 
  192 static int
  193 ral_pci_attach(device_t dev)
  194 {
  195         struct ral_pci_softc *psc = device_get_softc(dev);
  196         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  197         int count, error, rid;
  198 
  199         pci_enable_busmaster(dev);
  200 
  201         switch (pci_get_device(dev)) {
  202         case 0x0201:
  203                 psc->sc_opns = &ral_rt2560_opns;
  204                 break;
  205         case 0x0301:
  206         case 0x0302:
  207         case 0x0401:
  208                 psc->sc_opns = &ral_rt2661_opns;
  209                 break;
  210         default:
  211                 psc->sc_opns = &ral_rt2860_opns;
  212                 break;
  213         }
  214 
  215         rid = PCIR_BAR(0);
  216         psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  217             RF_ACTIVE);
  218         if (psc->mem == NULL) {
  219                 device_printf(dev, "could not allocate memory resource\n");
  220                 return ENXIO;
  221         }
  222 
  223         sc->sc_st = rman_get_bustag(psc->mem);
  224         sc->sc_sh = rman_get_bushandle(psc->mem);
  225         sc->sc_invalid = 1;
  226         
  227         rid = 0;
  228         if (ral_msi_disable == 0) {
  229                 count = 1;
  230                 if (pci_alloc_msi(dev, &count) == 0)
  231                         rid = 1;
  232         }
  233         psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
  234             (rid != 0 ? 0 : RF_SHAREABLE));
  235         if (psc->irq == NULL) {
  236                 device_printf(dev, "could not allocate interrupt resource\n");
  237                 pci_release_msi(dev);
  238                 bus_release_resource(dev, SYS_RES_MEMORY,
  239                     rman_get_rid(psc->mem), psc->mem);
  240                 return ENXIO;
  241         }
  242 
  243         error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
  244         if (error != 0) {
  245                 (void)ral_pci_detach(dev);
  246                 return error;
  247         }
  248 
  249         /*
  250          * Hook our interrupt after all initialization is complete.
  251          */
  252         error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  253             NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
  254         if (error != 0) {
  255                 device_printf(dev, "could not set up interrupt\n");
  256                 (void)ral_pci_detach(dev);
  257                 return error;
  258         }
  259         sc->sc_invalid = 0;
  260         
  261         return 0;
  262 }
  263 
  264 static int
  265 ral_pci_detach(device_t dev)
  266 {
  267         struct ral_pci_softc *psc = device_get_softc(dev);
  268         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  269         
  270         /* check if device was removed */
  271         sc->sc_invalid = !bus_child_present(dev);
  272 
  273         if (psc->sc_ih != NULL)
  274                 bus_teardown_intr(dev, psc->irq, psc->sc_ih);
  275         (*psc->sc_opns->detach)(psc);
  276 
  277         bus_generic_detach(dev);
  278         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(psc->irq),
  279             psc->irq);
  280         pci_release_msi(dev);
  281 
  282         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(psc->mem),
  283             psc->mem);
  284 
  285         return 0;
  286 }
  287 
  288 static int
  289 ral_pci_shutdown(device_t dev)
  290 {
  291         struct ral_pci_softc *psc = device_get_softc(dev);
  292 
  293         (*psc->sc_opns->shutdown)(psc);
  294 
  295         return 0;
  296 }
  297 
  298 static int
  299 ral_pci_suspend(device_t dev)
  300 {
  301         struct ral_pci_softc *psc = device_get_softc(dev);
  302 
  303         (*psc->sc_opns->suspend)(psc);
  304 
  305         return 0;
  306 }
  307 
  308 static int
  309 ral_pci_resume(device_t dev)
  310 {
  311         struct ral_pci_softc *psc = device_get_softc(dev);
  312 
  313         (*psc->sc_opns->resume)(psc);
  314 
  315         return 0;
  316 }
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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
