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/ral/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: releng/11.0/sys/dev/ral/if_ral_pci.c 287197 2015-08-27 08:56:39Z glebius $");
   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/mbuf.h>
   32 #include <sys/module.h>
   33 #include <sys/mutex.h>
   34 #include <sys/rman.h>
   35 #include <sys/socket.h>
   36 
   37 #include <machine/bus.h>
   38 #include <machine/resource.h>
   39 
   40 #include <net/ethernet.h>
   41 #include <net/if.h>
   42 #include <net/if_media.h>
   43 #include <net/route.h>
   44 
   45 #include <net80211/ieee80211_var.h>
   46 #include <net80211/ieee80211_radiotap.h>
   47 
   48 #include <dev/pci/pcireg.h>
   49 #include <dev/pci/pcivar.h>
   50 
   51 #include <dev/ral/rt2560var.h>
   52 #include <dev/ral/rt2661var.h>
   53 #include <dev/ral/rt2860var.h>
   54 
   55 MODULE_DEPEND(ral, pci, 1, 1, 1);
   56 MODULE_DEPEND(ral, firmware, 1, 1, 1);
   57 MODULE_DEPEND(ral, wlan, 1, 1, 1);
   58 MODULE_DEPEND(ral, wlan_amrr, 1, 1, 1);
   59 
   60 static int ral_msi_disable;
   61 TUNABLE_INT("hw.ral.msi_disable", &ral_msi_disable);
   62 
   63 struct ral_pci_ident {
   64         uint16_t        vendor;
   65         uint16_t        device;
   66         const char      *name;
   67 };
   68 
   69 static const struct ral_pci_ident ral_pci_ids[] = {
   70         { 0x1432, 0x7708, "Edimax RT2860" },
   71         { 0x1432, 0x7711, "Edimax RT3591" },
   72         { 0x1432, 0x7722, "Edimax RT3591" },
   73         { 0x1432, 0x7727, "Edimax RT2860" },
   74         { 0x1432, 0x7728, "Edimax RT2860" },
   75         { 0x1432, 0x7738, "Edimax RT2860" },
   76         { 0x1432, 0x7748, "Edimax RT2860" },
   77         { 0x1432, 0x7758, "Edimax RT2860" },
   78         { 0x1432, 0x7768, "Edimax RT2860" },
   79         { 0x1462, 0x891a, "MSI RT3090" },
   80         { 0x1814, 0x0201, "Ralink Technology RT2560" },
   81         { 0x1814, 0x0301, "Ralink Technology RT2561S" },
   82         { 0x1814, 0x0302, "Ralink Technology RT2561" },
   83         { 0x1814, 0x0401, "Ralink Technology RT2661" },
   84         { 0x1814, 0x0601, "Ralink Technology RT2860" },
   85         { 0x1814, 0x0681, "Ralink Technology RT2890" },
   86         { 0x1814, 0x0701, "Ralink Technology RT2760" },
   87         { 0x1814, 0x0781, "Ralink Technology RT2790" },
   88         { 0x1814, 0x3060, "Ralink Technology RT3060" },
   89         { 0x1814, 0x3062, "Ralink Technology RT3062" },
   90         { 0x1814, 0x3090, "Ralink Technology RT3090" },
   91         { 0x1814, 0x3091, "Ralink Technology RT3091" },
   92         { 0x1814, 0x3092, "Ralink Technology RT3092" },
   93         { 0x1814, 0x3390, "Ralink Technology RT3390" },
   94         { 0x1814, 0x3562, "Ralink Technology RT3562" },
   95         { 0x1814, 0x3592, "Ralink Technology RT3592" },
   96         { 0x1814, 0x3593, "Ralink Technology RT3593" },
   97         { 0x1814, 0x5360, "Ralink Technology RT5390" },
   98         { 0x1814, 0x5362, "Ralink Technology RT5392" },
   99         { 0x1814, 0x5390, "Ralink Technology RT5390" },
  100         { 0x1814, 0x5392, "Ralink Technology RT5392" },
  101         { 0x1814, 0x539a, "Ralink Technology RT5390" },
  102         { 0x1814, 0x539f, "Ralink Technology RT5390" },
  103         { 0x1a3b, 0x1059, "AWT RT2890" },
  104         { 0, 0, NULL }
  105 };
  106 
  107 static const struct ral_opns {
  108         int     (*attach)(device_t, int);
  109         int     (*detach)(void *);
  110         void    (*shutdown)(void *);
  111         void    (*suspend)(void *);
  112         void    (*resume)(void *);
  113         void    (*intr)(void *);
  114 
  115 }  ral_rt2560_opns = {
  116         rt2560_attach,
  117         rt2560_detach,
  118         rt2560_stop,
  119         rt2560_stop,
  120         rt2560_resume,
  121         rt2560_intr
  122 
  123 }, ral_rt2661_opns = {
  124         rt2661_attach,
  125         rt2661_detach,
  126         rt2661_shutdown,
  127         rt2661_suspend,
  128         rt2661_resume,
  129         rt2661_intr
  130 }, ral_rt2860_opns = {
  131         rt2860_attach,
  132         rt2860_detach,
  133         rt2860_shutdown,
  134         rt2860_suspend,
  135         rt2860_resume,
  136         rt2860_intr
  137 };
  138 
  139 struct ral_pci_softc {
  140         union {
  141                 struct rt2560_softc sc_rt2560;
  142                 struct rt2661_softc sc_rt2661;
  143                 struct rt2860_softc sc_rt2860;
  144         } u;
  145 
  146         const struct ral_opns   *sc_opns;
  147         struct resource         *irq;
  148         struct resource         *mem;
  149         void                    *sc_ih;
  150 };
  151 
  152 static int ral_pci_probe(device_t);
  153 static int ral_pci_attach(device_t);
  154 static int ral_pci_detach(device_t);
  155 static int ral_pci_shutdown(device_t);
  156 static int ral_pci_suspend(device_t);
  157 static int ral_pci_resume(device_t);
  158 
  159 static device_method_t ral_pci_methods[] = {
  160         /* Device interface */
  161         DEVMETHOD(device_probe,         ral_pci_probe),
  162         DEVMETHOD(device_attach,        ral_pci_attach),
  163         DEVMETHOD(device_detach,        ral_pci_detach),
  164         DEVMETHOD(device_shutdown,      ral_pci_shutdown),
  165         DEVMETHOD(device_suspend,       ral_pci_suspend),
  166         DEVMETHOD(device_resume,        ral_pci_resume),
  167 
  168         DEVMETHOD_END
  169 };
  170 
  171 static driver_t ral_pci_driver = {
  172         "ral",
  173         ral_pci_methods,
  174         sizeof (struct ral_pci_softc)
  175 };
  176 
  177 static devclass_t ral_devclass;
  178 
  179 DRIVER_MODULE(ral, pci, ral_pci_driver, ral_devclass, NULL, NULL);
  180 
  181 static int
  182 ral_pci_probe(device_t dev)
  183 {
  184         const struct ral_pci_ident *ident;
  185 
  186         for (ident = ral_pci_ids; ident->name != NULL; ident++) {
  187                 if (pci_get_vendor(dev) == ident->vendor &&
  188                     pci_get_device(dev) == ident->device) {
  189                         device_set_desc(dev, ident->name);
  190                         return (BUS_PROBE_DEFAULT);
  191                 }
  192         }
  193         return ENXIO;
  194 }
  195 
  196 static int
  197 ral_pci_attach(device_t dev)
  198 {
  199         struct ral_pci_softc *psc = device_get_softc(dev);
  200         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  201         int count, error, rid;
  202 
  203         pci_enable_busmaster(dev);
  204 
  205         switch (pci_get_device(dev)) {
  206         case 0x0201:
  207                 psc->sc_opns = &ral_rt2560_opns;
  208                 break;
  209         case 0x0301:
  210         case 0x0302:
  211         case 0x0401:
  212                 psc->sc_opns = &ral_rt2661_opns;
  213                 break;
  214         default:
  215                 psc->sc_opns = &ral_rt2860_opns;
  216                 break;
  217         }
  218 
  219         rid = PCIR_BAR(0);
  220         psc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid,
  221             RF_ACTIVE);
  222         if (psc->mem == NULL) {
  223                 device_printf(dev, "could not allocate memory resource\n");
  224                 return ENXIO;
  225         }
  226 
  227         sc->sc_st = rman_get_bustag(psc->mem);
  228         sc->sc_sh = rman_get_bushandle(psc->mem);
  229         sc->sc_invalid = 1;
  230         
  231         rid = 0;
  232         if (ral_msi_disable == 0) {
  233                 count = 1;
  234                 if (pci_alloc_msi(dev, &count) == 0)
  235                         rid = 1;
  236         }
  237         psc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE |
  238             (rid != 0 ? 0 : RF_SHAREABLE));
  239         if (psc->irq == NULL) {
  240                 device_printf(dev, "could not allocate interrupt resource\n");
  241                 pci_release_msi(dev);
  242                 bus_release_resource(dev, SYS_RES_MEMORY,
  243                     rman_get_rid(psc->mem), psc->mem);
  244                 return ENXIO;
  245         }
  246 
  247         error = (*psc->sc_opns->attach)(dev, pci_get_device(dev));
  248         if (error != 0) {
  249                 (void)ral_pci_detach(dev);
  250                 return error;
  251         }
  252 
  253         /*
  254          * Hook our interrupt after all initialization is complete.
  255          */
  256         error = bus_setup_intr(dev, psc->irq, INTR_TYPE_NET | INTR_MPSAFE,
  257             NULL, psc->sc_opns->intr, psc, &psc->sc_ih);
  258         if (error != 0) {
  259                 device_printf(dev, "could not set up interrupt\n");
  260                 (void)ral_pci_detach(dev);
  261                 return error;
  262         }
  263         sc->sc_invalid = 0;
  264         
  265         return 0;
  266 }
  267 
  268 static int
  269 ral_pci_detach(device_t dev)
  270 {
  271         struct ral_pci_softc *psc = device_get_softc(dev);
  272         struct rt2560_softc *sc = &psc->u.sc_rt2560;
  273         
  274         /* check if device was removed */
  275         sc->sc_invalid = !bus_child_present(dev);
  276 
  277         if (psc->sc_ih != NULL)
  278                 bus_teardown_intr(dev, psc->irq, psc->sc_ih);
  279         (*psc->sc_opns->detach)(psc);
  280 
  281         bus_generic_detach(dev);
  282         bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(psc->irq),
  283             psc->irq);
  284         pci_release_msi(dev);
  285 
  286         bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(psc->mem),
  287             psc->mem);
  288 
  289         return 0;
  290 }
  291 
  292 static int
  293 ral_pci_shutdown(device_t dev)
  294 {
  295         struct ral_pci_softc *psc = device_get_softc(dev);
  296 
  297         (*psc->sc_opns->shutdown)(psc);
  298 
  299         return 0;
  300 }
  301 
  302 static int
  303 ral_pci_suspend(device_t dev)
  304 {
  305         struct ral_pci_softc *psc = device_get_softc(dev);
  306 
  307         (*psc->sc_opns->suspend)(psc);
  308 
  309         return 0;
  310 }
  311 
  312 static int
  313 ral_pci_resume(device_t dev)
  314 {
  315         struct ral_pci_softc *psc = device_get_softc(dev);
  316 
  317         (*psc->sc_opns->resume)(psc);
  318 
  319         return 0;
  320 }

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