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 };
  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);