1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2002-2007 Sam Leffler, Errno Consulting 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 15 * redistribution must be conditioned upon including a substantially 16 * similar Disclaimer requirement for further binary redistribution. 17 * 18 * NO WARRANTY 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 22 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 23 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 24 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 27 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 29 * THE POSSIBILITY OF SUCH DAMAGES. 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 /* 36 * PCI/Cardbus front-end for the Broadcom Wireless LAN controller driver. 37 */ 38 39 #include "opt_wlan.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/module.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/malloc.h> 47 #include <sys/mutex.h> 48 #include <sys/errno.h> 49 50 #include <machine/bus.h> 51 #include <machine/resource.h> 52 #include <sys/bus.h> 53 #include <sys/rman.h> 54 55 #include <sys/socket.h> 56 57 #include <net/if.h> 58 #include <net/if_var.h> 59 #include <net/if_media.h> 60 #include <net/if_arp.h> 61 #include <net/ethernet.h> 62 63 #include <net80211/ieee80211_var.h> 64 #include <net80211/ieee80211_radiotap.h> 65 #include <net80211/ieee80211_amrr.h> 66 67 #include <dev/pci/pcivar.h> 68 #include <dev/pci/pcireg.h> 69 70 #include <dev/bwi/if_bwivar.h> 71 #include <dev/bwi/if_bwireg.h> 72 #include <dev/bwi/bitops.h> 73 74 /* 75 * PCI glue. 76 */ 77 78 struct bwi_pci_softc { 79 struct bwi_softc sc_sc; 80 }; 81 82 #define BS_BAR 0x10 83 #define PCIR_RETRY_TIMEOUT 0x41 84 85 static const struct bwi_dev { 86 uint16_t vid; 87 uint16_t did; 88 const char *desc; 89 } bwi_devices[] = { 90 { PCI_VENDOR_BROADCOM, 0x4301,"Broadcom BCM4301 802.11b Wireless Lan" }, 91 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11b Wireless Lan" }, 92 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11b/g Wireless Lan" }, 93 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11a/b/g Wireless Lan" }, 94 { PCI_VENDOR_BROADCOM, 0x4313,"Broadcom BCM4312 802.11a Wireless Lan" }, 95 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306 802.11b/g Wireless Lan"}, 96 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306 802.11a Wireless Lan"}, 97 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306 802.11b/g Wireless Lan"}, 98 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11a/b/g Wireless Lan" }, 99 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11b/g Wireless Lan" }, 100 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4318 802.11a/b/g Wireless Lan" }, 101 { PCI_VENDOR_BROADCOM, 0x431a,"Broadcom BCM4318 802.11a Wireless Lan" }, 102 { 0, 0, NULL } 103 }; 104 105 static int 106 bwi_pci_probe(device_t dev) 107 { 108 const struct bwi_dev *b; 109 uint16_t did, vid; 110 111 did = pci_get_device(dev); 112 vid = pci_get_vendor(dev); 113 114 for (b = bwi_devices; b->desc != NULL; ++b) { 115 if (b->did == did && b->vid == vid) { 116 device_set_desc(dev, b->desc); 117 return BUS_PROBE_DEFAULT; 118 } 119 } 120 return ENXIO; 121 } 122 123 static int 124 bwi_pci_attach(device_t dev) 125 { 126 struct bwi_pci_softc *psc = device_get_softc(dev); 127 struct bwi_softc *sc = &psc->sc_sc; 128 int error = ENXIO; 129 130 sc->sc_dev = dev; 131 132 /* 133 * Enable bus mastering. 134 */ 135 pci_enable_busmaster(dev); 136 137 /* 138 * Setup memory-mapping of PCI registers. 139 */ 140 sc->sc_mem_rid = BWI_PCIR_BAR; 141 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 142 &sc->sc_mem_rid, RF_ACTIVE); 143 if (sc->sc_mem_res == NULL) { 144 device_printf(dev, "cannot map register space\n"); 145 goto bad; 146 } 147 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res); 148 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res); 149 /* 150 * Mark device invalid so any interrupts (shared or otherwise) 151 * that arrive before the card is setup are discarded. 152 */ 153 sc->sc_invalid = 1; 154 155 /* 156 * Arrange interrupt line. 157 */ 158 sc->sc_irq_rid = 0; 159 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 160 &sc->sc_irq_rid, 161 RF_SHAREABLE|RF_ACTIVE); 162 if (sc->sc_irq_res == NULL) { 163 device_printf(dev, "could not map interrupt\n"); 164 goto bad1; 165 } 166 167 /* Get more PCI information */ 168 sc->sc_pci_did = pci_get_device(dev); 169 sc->sc_pci_revid = pci_get_revid(dev); 170 sc->sc_pci_subvid = pci_get_subvendor(dev); 171 sc->sc_pci_subdid = pci_get_subdevice(dev); 172 173 if ((error = bwi_attach(sc)) != 0) 174 goto bad2; 175 176 if (bus_setup_intr(dev, sc->sc_irq_res, 177 INTR_TYPE_NET | INTR_MPSAFE, 178 NULL, bwi_intr, sc, &sc->sc_irq_handle)) { 179 device_printf(dev, "could not establish interrupt\n"); 180 goto bad2; 181 } 182 return (0); 183 184 bad2: 185 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 186 bad1: 187 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 188 bad: 189 return (error); 190 } 191 192 static int 193 bwi_pci_detach(device_t dev) 194 { 195 struct bwi_pci_softc *psc = device_get_softc(dev); 196 struct bwi_softc *sc = &psc->sc_sc; 197 198 /* check if device was removed */ 199 sc->sc_invalid = !bus_child_present(dev); 200 201 bwi_detach(sc); 202 203 bus_generic_detach(dev); 204 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle); 205 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 206 207 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 208 209 return (0); 210 } 211 212 static int 213 bwi_pci_shutdown(device_t dev) 214 { 215 struct bwi_pci_softc *psc = device_get_softc(dev); 216 217 bwi_shutdown(&psc->sc_sc); 218 return (0); 219 } 220 221 static int 222 bwi_pci_suspend(device_t dev) 223 { 224 struct bwi_pci_softc *psc = device_get_softc(dev); 225 226 bwi_suspend(&psc->sc_sc); 227 228 return (0); 229 } 230 231 static int 232 bwi_pci_resume(device_t dev) 233 { 234 struct bwi_pci_softc *psc = device_get_softc(dev); 235 236 bwi_resume(&psc->sc_sc); 237 238 return (0); 239 } 240 241 static device_method_t bwi_pci_methods[] = { 242 /* Device interface */ 243 DEVMETHOD(device_probe, bwi_pci_probe), 244 DEVMETHOD(device_attach, bwi_pci_attach), 245 DEVMETHOD(device_detach, bwi_pci_detach), 246 DEVMETHOD(device_shutdown, bwi_pci_shutdown), 247 DEVMETHOD(device_suspend, bwi_pci_suspend), 248 DEVMETHOD(device_resume, bwi_pci_resume), 249 { 0,0 } 250 }; 251 252 static driver_t bwi_driver = { 253 "bwi", 254 bwi_pci_methods, 255 sizeof (struct bwi_pci_softc) 256 }; 257 258 DRIVER_MODULE(bwi, pci, bwi_driver, 0, 0); 259 MODULE_PNP_INFO("U16:vendor;U16:device;D:#", pci, bwi, bwi_devices, 260 nitems(bwi_devices) - 1); 261 MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */ 262 MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */ 263 MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1); 264