The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/dev/bwi/if_bwi_pci.c

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    1 /*-
    2  * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer,
   10  *    without modification.
   11  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
   12  *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
   13  *    redistribution must be conditioned upon including a substantially
   14  *    similar Disclaimer requirement for further binary redistribution.
   15  *
   16  * NO WARRANTY
   17  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   18  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   19  * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
   20  * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
   21  * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
   22  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   23  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   24  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
   25  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   26  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
   27  * THE POSSIBILITY OF SUCH DAMAGES.
   28  */
   29 
   30 #include <sys/cdefs.h>
   31 __FBSDID("$FreeBSD: releng/8.1/sys/dev/bwi/if_bwi_pci.c 192277 2009-05-18 01:00:11Z imp $");
   32 
   33 /*
   34  * PCI/Cardbus front-end for the Broadcom Wireless LAN controller driver.
   35  */
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h> 
   39 #include <sys/module.h>
   40 #include <sys/kernel.h>
   41 #include <sys/lock.h>
   42 #include <sys/mutex.h>
   43 #include <sys/errno.h>
   44 
   45 #include <machine/bus.h>
   46 #include <machine/resource.h>
   47 #include <sys/bus.h>
   48 #include <sys/rman.h>
   49 
   50 #include <sys/socket.h>
   51  
   52 #include <net/if.h>
   53 #include <net/if_media.h>
   54 #include <net/if_arp.h>
   55 
   56 #include <net80211/ieee80211_var.h>
   57 #include <net80211/ieee80211_radiotap.h>
   58 #include <net80211/ieee80211_amrr.h>
   59 
   60 #include <dev/pci/pcivar.h>
   61 #include <dev/pci/pcireg.h>
   62 
   63 #include <dev/bwi/if_bwivar.h>
   64 #include <dev/bwi/if_bwireg.h>
   65 #include <dev/bwi/bitops.h>
   66 
   67 /*
   68  * PCI glue.
   69  */
   70 
   71 struct bwi_pci_softc {
   72         struct bwi_softc        sc_sc;
   73 };
   74 
   75 #define BS_BAR  0x10
   76 #define PCIR_RETRY_TIMEOUT      0x41
   77 
   78 static const struct bwi_dev {
   79         uint16_t        vid;
   80         uint16_t        did;
   81         const char      *desc;
   82 } bwi_devices[] = {
   83         { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" },
   84         { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" },
   85         { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" },
   86         { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" },
   87         { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" },
   88         { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"},
   89         { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"},
   90         { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"},
   91         { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" },
   92         { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" },
   93         { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" },
   94         { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" }
   95 };
   96 
   97 static int
   98 bwi_pci_probe(device_t dev)
   99 {
  100         const struct bwi_dev *b;
  101         uint16_t did, vid;
  102 
  103         did = pci_get_device(dev);
  104         vid = pci_get_vendor(dev);
  105 
  106         for (b = bwi_devices; b->desc != NULL; ++b) {
  107                 if (b->did == did && b->vid == vid) {
  108                         device_set_desc(dev, b->desc);
  109                         return BUS_PROBE_DEFAULT;
  110                 }
  111         }
  112         return ENXIO;
  113 }
  114 
  115 static int
  116 bwi_pci_attach(device_t dev)
  117 {
  118         struct bwi_pci_softc *psc = device_get_softc(dev);
  119         struct bwi_softc *sc = &psc->sc_sc;
  120         int error = ENXIO;
  121 
  122         sc->sc_dev = dev;
  123 
  124         /*
  125          * Enable bus mastering.
  126          */
  127         pci_enable_busmaster(dev);
  128 
  129         /* 
  130          * Setup memory-mapping of PCI registers.
  131          */
  132         sc->sc_mem_rid = BWI_PCIR_BAR;
  133         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  134                 &sc->sc_mem_rid, RF_ACTIVE);
  135         if (sc->sc_mem_res == NULL) {
  136                 device_printf(dev, "cannot map register space\n");
  137                 goto bad;
  138         }
  139         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
  140         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
  141         /*
  142          * Mark device invalid so any interrupts (shared or otherwise)
  143          * that arrive before the card is setup are discarded.
  144          */
  145         sc->sc_invalid = 1;
  146 
  147         /*
  148          * Arrange interrupt line.
  149          */
  150         sc->sc_irq_rid = 0;
  151         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
  152                                                 &sc->sc_irq_rid,
  153                                                 RF_SHAREABLE|RF_ACTIVE);
  154         if (sc->sc_irq_res == NULL) {
  155                 device_printf(dev, "could not map interrupt\n");
  156                 goto bad1;
  157         }
  158         if (bus_setup_intr(dev, sc->sc_irq_res,
  159                            INTR_TYPE_NET | INTR_MPSAFE,
  160                            NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
  161                 device_printf(dev, "could not establish interrupt\n");
  162                 goto bad2;
  163         }
  164 
  165         /* Get more PCI information */
  166         sc->sc_pci_did = pci_get_device(dev);
  167         sc->sc_pci_revid = pci_get_revid(dev);
  168         sc->sc_pci_subvid = pci_get_subvendor(dev);
  169         sc->sc_pci_subdid = pci_get_subdevice(dev);
  170 
  171         error = bwi_attach(sc);
  172         if (error == 0)                                 /* success */
  173                 return 0;
  174 
  175         bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
  176 bad2:
  177         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
  178 bad1:
  179         bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
  180 bad:
  181         return (error);
  182 }
  183 
  184 static int
  185 bwi_pci_detach(device_t dev)
  186 {
  187         struct bwi_pci_softc *psc = device_get_softc(dev);
  188         struct bwi_softc *sc = &psc->sc_sc;
  189 
  190         /* check if device was removed */
  191         sc->sc_invalid = !bus_child_present(dev);
  192 
  193         bwi_detach(sc);
  194 
  195         bus_generic_detach(dev);
  196         bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
  197         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
  198 
  199         bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
  200 
  201         return (0);
  202 }
  203 
  204 static int
  205 bwi_pci_shutdown(device_t dev)
  206 {
  207         struct bwi_pci_softc *psc = device_get_softc(dev);
  208 
  209         bwi_shutdown(&psc->sc_sc);
  210         return (0);
  211 }
  212 
  213 static int
  214 bwi_pci_suspend(device_t dev)
  215 {
  216         struct bwi_pci_softc *psc = device_get_softc(dev);
  217 
  218         bwi_suspend(&psc->sc_sc);
  219 
  220         return (0);
  221 }
  222 
  223 static int
  224 bwi_pci_resume(device_t dev)
  225 {
  226         struct bwi_pci_softc *psc = device_get_softc(dev);
  227 
  228         bwi_resume(&psc->sc_sc);
  229 
  230         return (0);
  231 }
  232 
  233 static device_method_t bwi_pci_methods[] = {
  234         /* Device interface */
  235         DEVMETHOD(device_probe,         bwi_pci_probe),
  236         DEVMETHOD(device_attach,        bwi_pci_attach),
  237         DEVMETHOD(device_detach,        bwi_pci_detach),
  238         DEVMETHOD(device_shutdown,      bwi_pci_shutdown),
  239         DEVMETHOD(device_suspend,       bwi_pci_suspend),
  240         DEVMETHOD(device_resume,        bwi_pci_resume),
  241 
  242         { 0,0 }
  243 };
  244 static driver_t bwi_driver = {
  245         "bwi",
  246         bwi_pci_methods,
  247         sizeof (struct bwi_pci_softc)
  248 };
  249 static  devclass_t bwi_devclass;
  250 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
  251 MODULE_DEPEND(bwi, wlan, 1, 1, 1);              /* 802.11 media layer */
  252 MODULE_DEPEND(bwi, firmware, 1, 1, 1);          /* firmware support */
  253 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);

Cache object: 48cad3692f1681e54223933cf8f351bc


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