FreeBSD/Linux Kernel Cross Reference
sys/dev/bwi/if_bwi_pci.c

     /*-
      * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
      * 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,
     *    without modification.
     * 2. Redistributions in binary form must reproduce at minimum a disclaimer
     *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
     *    redistribution must be conditioned upon including a substantially
     *    similar Disclaimer requirement for further binary redistribution.
     *
     * NO WARRANTY
     * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
     * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
     * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES.
     */
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD$");
    
    /*
     * PCI/Cardbus front-end for the Broadcom Wireless LAN controller driver.
     */
    
    #include <sys/param.h>
    #include <sys/systm.h> 
    #include <sys/module.h>
    #include <sys/kernel.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <sys/errno.h>
    
    #include <machine/bus.h>
    #include <machine/resource.h>
    #include <sys/bus.h>
    #include <sys/rman.h>
    
    #include <sys/socket.h>
     
    #include <net/if.h>
    #include <net/if_media.h>
    #include <net/if_arp.h>
    
    #include <net80211/ieee80211_var.h>
    #include <net80211/ieee80211_radiotap.h>
    #include <net80211/ieee80211_amrr.h>
    
    #include <dev/pci/pcivar.h>
    #include <dev/pci/pcireg.h>
    
    #include <dev/bwi/if_bwivar.h>
    #include <dev/bwi/if_bwireg.h>
    #include <dev/bwi/bitops.h>
    
    /*
     * PCI glue.
     */
    
    struct bwi_pci_softc {
            struct bwi_softc        sc_sc;
    };
    
    #define BS_BAR  0x10
    #define PCIR_RETRY_TIMEOUT      0x41
    
    static const struct bwi_dev {
            uint16_t        vid;
            uint16_t        did;
            const char      *desc;
    } bwi_devices[] = {
            { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"},
            { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"},
            { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"},
            { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" },
            { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" },
            { 0, 0, NULL }
    };
    
    static int
    bwi_pci_probe(device_t dev)
   {
           const struct bwi_dev *b;
           uint16_t did, vid;
   
           did = pci_get_device(dev);
           vid = pci_get_vendor(dev);
   
           for (b = bwi_devices; b->desc != NULL; ++b) {
                   if (b->did == did && b->vid == vid) {
                           device_set_desc(dev, b->desc);
                           return BUS_PROBE_DEFAULT;
                   }
           }
           return ENXIO;
   }
   
   static int
   bwi_pci_attach(device_t dev)
   {
           struct bwi_pci_softc *psc = device_get_softc(dev);
           struct bwi_softc *sc = &psc->sc_sc;
           int error = ENXIO;
   
           sc->sc_dev = dev;
   
           /*
            * Enable bus mastering.
            */
           pci_enable_busmaster(dev);
   
           /* 
            * Setup memory-mapping of PCI registers.
            */
           sc->sc_mem_rid = BWI_PCIR_BAR;
           sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
                   &sc->sc_mem_rid, RF_ACTIVE);
           if (sc->sc_mem_res == NULL) {
                   device_printf(dev, "cannot map register space\n");
                   goto bad;
           }
           sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
           sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
           /*
            * Mark device invalid so any interrupts (shared or otherwise)
            * that arrive before the card is setup are discarded.
            */
           sc->sc_invalid = 1;
   
           /*
            * Arrange interrupt line.
            */
           sc->sc_irq_rid = 0;
           sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
                                                   &sc->sc_irq_rid,
                                                   RF_SHAREABLE|RF_ACTIVE);
           if (sc->sc_irq_res == NULL) {
                   device_printf(dev, "could not map interrupt\n");
                   goto bad1;
           }
           if (bus_setup_intr(dev, sc->sc_irq_res,
                              INTR_TYPE_NET | INTR_MPSAFE,
                              NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
                   device_printf(dev, "could not establish interrupt\n");
                   goto bad2;
           }
   
           /* Get more PCI information */
           sc->sc_pci_did = pci_get_device(dev);
           sc->sc_pci_revid = pci_get_revid(dev);
           sc->sc_pci_subvid = pci_get_subvendor(dev);
           sc->sc_pci_subdid = pci_get_subdevice(dev);
   
           error = bwi_attach(sc);
           if (error == 0)                                 /* success */
                   return 0;
   
           bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
   bad2:
           bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
   bad1:
           bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
   bad:
           return (error);
   }
   
   static int
   bwi_pci_detach(device_t dev)
   {
           struct bwi_pci_softc *psc = device_get_softc(dev);
           struct bwi_softc *sc = &psc->sc_sc;
   
           /* check if device was removed */
           sc->sc_invalid = !bus_child_present(dev);
   
           bwi_detach(sc);
   
           bus_generic_detach(dev);
           bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
           bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
   
           bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
   
           return (0);
   }
   
   static int
   bwi_pci_shutdown(device_t dev)
   {
           struct bwi_pci_softc *psc = device_get_softc(dev);
   
           bwi_shutdown(&psc->sc_sc);
           return (0);
   }
   
   static int
   bwi_pci_suspend(device_t dev)
   {
           struct bwi_pci_softc *psc = device_get_softc(dev);
   
           bwi_suspend(&psc->sc_sc);
   
           return (0);
   }
   
   static int
   bwi_pci_resume(device_t dev)
   {
           struct bwi_pci_softc *psc = device_get_softc(dev);
   
           bwi_resume(&psc->sc_sc);
   
           return (0);
   }
   
   static device_method_t bwi_pci_methods[] = {
           /* Device interface */
           DEVMETHOD(device_probe,         bwi_pci_probe),
           DEVMETHOD(device_attach,        bwi_pci_attach),
           DEVMETHOD(device_detach,        bwi_pci_detach),
           DEVMETHOD(device_shutdown,      bwi_pci_shutdown),
           DEVMETHOD(device_suspend,       bwi_pci_suspend),
           DEVMETHOD(device_resume,        bwi_pci_resume),
   
           { 0,0 }
   };
   static driver_t bwi_driver = {
           "bwi",
           bwi_pci_methods,
           sizeof (struct bwi_pci_softc)
   };
   static  devclass_t bwi_devclass;
   DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
   MODULE_DEPEND(bwi, wlan, 1, 1, 1);              /* 802.11 media layer */
   MODULE_DEPEND(bwi, firmware, 1, 1, 1);          /* firmware support */
   MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);

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