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 71struct bwi_pci_softc { 72 struct bwi_softc sc_sc; 73}; 74 75#define BS_BAR 0x10 76#define PCIR_RETRY_TIMEOUT 0x41 77 78static 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 98static int 99bwi_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 116static int 117bwi_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); 177bad2: 178 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 179bad1: 180 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 181bad: 182 return (error); 183} 184 185static int 186bwi_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 205static int 206bwi_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 214static int 215bwi_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 224static int 225bwi_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 234static 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}; 245static driver_t bwi_driver = { 246 "bwi", 247 bwi_pci_methods, 248 sizeof (struct bwi_pci_softc) 249}; 250static devclass_t bwi_devclass; 251DRIVER_MODULE(bwi, pci, bwi_driver, bwi_devclass, 0, 0); 252MODULE_DEPEND(bwi, wlan, 1, 1, 1); /* 802.11 media layer */ 253MODULE_DEPEND(bwi, firmware, 1, 1, 1); /* firmware support */ 254MODULE_DEPEND(bwi, wlan_amrr, 1, 1, 1); 255