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); 254