sys/dev/bwi/if_bwi_pci.c

   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("$FreeBSD$");
  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         { 0, 0, NULL }
  96 };
  97
  98 static int
  99 bwi_pci_probe(device_t dev)
 100 {
 101         const struct bwi_dev *b;
 102         uint16_t did, vid;
 103
 104         did = pci_get_device(dev);
 105         vid = pci_get_vendor(dev);
 106
 107         for (b = bwi_devices; b->desc != NULL; ++b) {
 108                 if (b->did == did && b->vid == vid) {
 109                         device_set_desc(dev, b->desc);
 110                         return BUS_PROBE_DEFAULT;
 111                 }
 112         }
 113         return ENXIO;
 114 }
 115
 116 static int
 117 bwi_pci_attach(device_t dev)
 118 {
 119         struct bwi_pci_softc *psc = device_get_softc(dev);
 120         struct bwi_softc *sc = &psc->sc_sc;
 121         int error = ENXIO;
 122
 123         sc->sc_dev = dev;
 124
 125         /*
 126          * Enable bus mastering.
 127          */
 128         pci_enable_busmaster(dev);
 129
 130         /*
 131          * Setup memory-mapping of PCI registers.
 132          */
 133         sc->sc_mem_rid = BWI_PCIR_BAR;
 134         sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
 135                 &sc->sc_mem_rid, RF_ACTIVE);
 136         if (sc->sc_mem_res == NULL) {
 137                 device_printf(dev, "cannot map register space\n");
 138                 goto bad;
 139         }
 140         sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res);
 141         sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res);
 142         /*
 143          * Mark device invalid so any interrupts (shared or otherwise)
 144          * that arrive before the card is setup are discarded.
 145          */
 146         sc->sc_invalid = 1;
 147
 148         /*
 149          * Arrange interrupt line.
 150          */
 151         sc->sc_irq_rid = 0;
 152         sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ,
 153                                                 &sc->sc_irq_rid,
 154                                                 RF_SHAREABLE|RF_ACTIVE);
 155         if (sc->sc_irq_res == NULL) {
 156                 device_printf(dev, "could not map interrupt\n");
 157                 goto bad1;
 158         }
 159         if (bus_setup_intr(dev, sc->sc_irq_res,
 160                            INTR_TYPE_NET | INTR_MPSAFE,
 161                            NULL, bwi_intr, sc, &sc->sc_irq_handle)) {
 162                 device_printf(dev, "could not establish interrupt\n");
 163                 goto bad2;
 164         }
 165
 166         /* Get more PCI information */
 167         sc->sc_pci_did = pci_get_device(dev);
 168         sc->sc_pci_revid = pci_get_revid(dev);
 169         sc->sc_pci_subvid = pci_get_subvendor(dev);
 170         sc->sc_pci_subdid = pci_get_subdevice(dev);
 171
 172         error = bwi_attach(sc);
 173         if (error == 0)                                 /* success */
 174                 return 0;
 175
 176         bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 177 bad2:
 178         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
 179 bad1:
 180         bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
 181 bad:
 182         return (error);
 183 }
 184
 185 static int
 186 bwi_pci_detach(device_t dev)
 187 {
 188         struct bwi_pci_softc *psc = device_get_softc(dev);
 189         struct bwi_softc *sc = &psc->sc_sc;
 190
 191         /* check if device was removed */
 192         sc->sc_invalid = !bus_child_present(dev);
 193
 194         bwi_detach(sc);
 195
 196         bus_generic_detach(dev);
 197         bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle);
 198         bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res);
 199
 200         bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res);
 201
 202         return (0);
 203 }
 204
 205 static int
 206 bwi_pci_shutdown(device_t dev)
 207 {
 208         struct bwi_pci_softc *psc = device_get_softc(dev);
 209
 210         bwi_shutdown(&psc->sc_sc);
 211         return (0);
 212 }
 213
 214 static int
 215 bwi_pci_suspend(device_t dev)
 216 {
 217         struct bwi_pci_softc *psc = device_get_softc(dev);
 218
 219         bwi_suspend(&psc->sc_sc);
 220
 221         return (0);
 222 }
 223
 224 static int
 225 bwi_pci_resume(device_t dev)
 226 {
 227         struct bwi_pci_softc *psc = device_get_softc(dev);
 228
 229         bwi_resume(&psc->sc_sc);
 230
 231         return (0);
 232 }
 233
 234 static device_method_t bwi_pci_methods[] = {
 235         /* Device interface */
 236         DEVMETHOD(device_probe,         bwi_pci_probe),
 237         DEVMETHOD(device_attach,        bwi_pci_attach),
 238         DEVMETHOD(device_detach,        bwi_pci_detach),
 239         DEVMETHOD(device_shutdown,      bwi_pci_shutdown),
 240         DEVMETHOD(device_suspend,       bwi_pci_suspend),
 241         DEVMETHOD(device_resume,        bwi_pci_resume),
 242
 243         { 0,0 }
 244 };
 245 static driver_t bwi_driver = {
 246         "bwi",
 247         bwi_pci_methods,
 248         sizeof (struct bwi_pci_softc)
 249 };
 250 static  devclass_t bwi_devclass;
 251 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0);
 252 MODULE_DEPEND(bwi, wlan, 1, 1, 1);              /* 802.11 media layer */
 253 MODULE_DEPEND(bwi, firmware, 1, 1, 1);          /* firmware support */
 254 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1);