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 "opt_wlan.h" 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/module.h> 42 #include <sys/kernel.h> 43 #include <sys/lock.h> 44 #include <sys/malloc.h> 45 #include <sys/mutex.h> 46 #include <sys/errno.h> 47 48 #include <machine/bus.h> 49 #include <machine/resource.h> 50 #include <sys/bus.h> 51 #include <sys/rman.h> 52 53 #include <sys/socket.h> 54 55 #include <net/if.h> 56 #include <net/if_var.h> 57 #include <net/if_media.h> 58 #include <net/if_arp.h> 59 #include <net/ethernet.h> 60 61 #include <net80211/ieee80211_var.h> 62 #include <net80211/ieee80211_radiotap.h> 63 #include <net80211/ieee80211_amrr.h> 64 65 #include <dev/pci/pcivar.h> 66 #include <dev/pci/pcireg.h> 67 68 #include <dev/bwi/if_bwivar.h> 69 #include <dev/bwi/if_bwireg.h> 70 #include <dev/bwi/bitops.h> 71 72 /* 73 * PCI glue. 74 */ 75 76 struct bwi_pci_softc { 77 struct bwi_softc sc_sc; 78 }; 79 80 #define BS_BAR 0x10 81 #define PCIR_RETRY_TIMEOUT 0x41 82 83 static const struct bwi_dev { 84 uint16_t vid; 85 uint16_t did; 86 const char *desc; 87 } bwi_devices[] = { 88 { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" }, 89 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" }, 90 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" }, 91 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" }, 92 { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" }, 93 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"}, 94 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"}, 95 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"}, 96 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" }, 97 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" }, 98 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" }, 99 { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" }, 100 { 0, 0, NULL } 101 }; 102 103 static int 104 bwi_pci_probe(device_t dev) 105 { 106 const struct bwi_dev *b; 107 uint16_t did, vid; 108 109 did = pci_get_device(dev); 110 vid = pci_get_vendor(dev); 111 112 for (b = bwi_devices; b->desc != NULL; ++b) { 113 if (b->did == did && b->vid == vid) { 114 device_set_desc(dev, b->desc); 115 return BUS_PROBE_DEFAULT; 116 } 117 } 118 return ENXIO; 119 } 120 121 static int 122 bwi_pci_attach(device_t dev) 123 { 124 struct bwi_pci_softc *psc = device_get_softc(dev); 125 struct bwi_softc *sc = &psc->sc_sc; 126 int error = ENXIO; 127 128 sc->sc_dev = dev; 129 130 /* 131 * Enable bus mastering. 132 */ 133 pci_enable_busmaster(dev); 134 135 /* 136 * Setup memory-mapping of PCI registers. 137 */ 138 sc->sc_mem_rid = BWI_PCIR_BAR; 139 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 140 &sc->sc_mem_rid, RF_ACTIVE); 141 if (sc->sc_mem_res == NULL) { 142 device_printf(dev, "cannot map register space\n"); 143 goto bad; 144 } 145 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res); 146 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res); 147 /* 148 * Mark device invalid so any interrupts (shared or otherwise) 149 * that arrive before the card is setup are discarded. 150 */ 151 sc->sc_invalid = 1; 152 153 /* 154 * Arrange interrupt line. 155 */ 156 sc->sc_irq_rid = 0; 157 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 158 &sc->sc_irq_rid, 159 RF_SHAREABLE|RF_ACTIVE); 160 if (sc->sc_irq_res == NULL) { 161 device_printf(dev, "could not map interrupt\n"); 162 goto bad1; 163 } 164 if (bus_setup_intr(dev, sc->sc_irq_res, 165 INTR_TYPE_NET | INTR_MPSAFE, 166 NULL, bwi_intr, sc, &sc->sc_irq_handle)) { 167 device_printf(dev, "could not establish interrupt\n"); 168 goto bad2; 169 } 170 171 /* Get more PCI information */ 172 sc->sc_pci_did = pci_get_device(dev); 173 sc->sc_pci_revid = pci_get_revid(dev); 174 sc->sc_pci_subvid = pci_get_subvendor(dev); 175 sc->sc_pci_subdid = pci_get_subdevice(dev); 176 177 error = bwi_attach(sc); 178 if (error == 0) /* success */ 179 return 0; 180 181 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle); 182 bad2: 183 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 184 bad1: 185 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 186 bad: 187 return (error); 188 } 189 190 static int 191 bwi_pci_detach(device_t dev) 192 { 193 struct bwi_pci_softc *psc = device_get_softc(dev); 194 struct bwi_softc *sc = &psc->sc_sc; 195 196 /* check if device was removed */ 197 sc->sc_invalid = !bus_child_present(dev); 198 199 bwi_detach(sc); 200 201 bus_generic_detach(dev); 202 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle); 203 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 204 205 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 206 207 return (0); 208 } 209 210 static int 211 bwi_pci_shutdown(device_t dev) 212 { 213 struct bwi_pci_softc *psc = device_get_softc(dev); 214 215 bwi_shutdown(&psc->sc_sc); 216 return (0); 217 } 218 219 static int 220 bwi_pci_suspend(device_t dev) 221 { 222 struct bwi_pci_softc *psc = device_get_softc(dev); 223 224 bwi_suspend(&psc->sc_sc); 225 226 return (0); 227 } 228 229 static int 230 bwi_pci_resume(device_t dev) 231 { 232 struct bwi_pci_softc *psc = device_get_softc(dev); 233 234 bwi_resume(&psc->sc_sc); 235 236 return (0); 237 } 238 239 static device_method_t bwi_pci_methods[] = { 240 /* Device interface */ 241 DEVMETHOD(device_probe, bwi_pci_probe), 242 DEVMETHOD(device_attach, bwi_pci_attach), 243 DEVMETHOD(device_detach, bwi_pci_detach), 244 DEVMETHOD(device_shutdown, bwi_pci_shutdown), 245 DEVMETHOD(device_suspend, bwi_pci_suspend), 246 DEVMETHOD(device_resume, bwi_pci_resume), 247 248 { 0,0 } 249 }; 250 static driver_t bwi_driver = { 251 "bwi", 252 bwi_pci_methods, 253 sizeof (struct bwi_pci_softc) 254 }; 255 static devclass_t bwi_devclass; 256 DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0); 257 MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */ 258 MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */ 259 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1); 260