if_bwi_pci.c revision 191762
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: head/sys/dev/bwi/if_bwi_pci.c 191762 2009-05-03 04:01:43Z imp $"); 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 802.11 Wireless Lan" }, 84 { PCI_VENDOR_BROADCOM, 0x4307,"Broadcom BCM4307 802.11 Wireless Lan" }, 85 { PCI_VENDOR_BROADCOM, 0x4311,"Broadcom BCM4311 802.11 Wireless Lan" }, 86 { PCI_VENDOR_BROADCOM, 0x4312,"Broadcom BCM4312 802.11 Wireless Lan" }, 87 { PCI_VENDOR_BROADCOM, 0x4320,"Broadcom BCM4306v1 802.11 Wireless Lan"}, 88 { PCI_VENDOR_BROADCOM, 0x4321,"Broadcom BCM4306v2 802.11 Wireless Lan"}, 89 { PCI_VENDOR_BROADCOM, 0x4325,"Broadcom BCM4306v3 802.11 Wireless Lan"}, 90 { PCI_VENDOR_BROADCOM, 0x4324,"Broadcom BCM4309 802.11 Wireless Lan" }, 91 { PCI_VENDOR_BROADCOM, 0x4318,"Broadcom BCM4318 802.11 Wireless Lan" }, 92 { PCI_VENDOR_BROADCOM, 0x4319,"Broadcom BCM4319 802.11 Wireless Lan" } 93}; 94 95static int 96bwi_pci_probe(device_t dev) 97{ 98 const struct bwi_dev *b; 99 uint16_t did, vid; 100 101 did = pci_get_device(dev); 102 vid = pci_get_vendor(dev); 103 104 for (b = bwi_devices; b->desc != NULL; ++b) { 105 if (b->did == did && b->vid == vid) { 106 device_set_desc(dev, b->desc); 107 return BUS_PROBE_DEFAULT; 108 } 109 } 110 return ENXIO; 111} 112 113static int 114bwi_pci_attach(device_t dev) 115{ 116 struct bwi_pci_softc *psc = device_get_softc(dev); 117 struct bwi_softc *sc = &psc->sc_sc; 118 int error = ENXIO; 119 120 sc->sc_dev = dev; 121 122 /* 123 * Enable bus mastering. 124 */ 125 pci_enable_busmaster(dev); 126 127 /* 128 * Setup memory-mapping of PCI registers. 129 */ 130 sc->sc_mem_rid = BWI_PCIR_BAR; 131 sc->sc_mem_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 132 &sc->sc_mem_rid, RF_ACTIVE); 133 if (sc->sc_mem_res == NULL) { 134 device_printf(dev, "cannot map register space\n"); 135 goto bad; 136 } 137 sc->sc_mem_bt = rman_get_bustag(sc->sc_mem_res); 138 sc->sc_mem_bh = rman_get_bushandle(sc->sc_mem_res); 139 /* 140 * Mark device invalid so any interrupts (shared or otherwise) 141 * that arrive before the card is setup are discarded. 142 */ 143 sc->sc_invalid = 1; 144 145 /* 146 * Arrange interrupt line. 147 */ 148 sc->sc_irq_rid = 0; 149 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 150 &sc->sc_irq_rid, 151 RF_SHAREABLE|RF_ACTIVE); 152 if (sc->sc_irq_res == NULL) { 153 device_printf(dev, "could not map interrupt\n"); 154 goto bad1; 155 } 156 if (bus_setup_intr(dev, sc->sc_irq_res, 157 INTR_TYPE_NET | INTR_MPSAFE, 158 NULL, bwi_intr, sc, &sc->sc_irq_handle)) { 159 device_printf(dev, "could not establish interrupt\n"); 160 goto bad2; 161 } 162 163 /* Get more PCI information */ 164 sc->sc_pci_did = pci_get_device(dev); 165 sc->sc_pci_revid = pci_get_revid(dev); 166 sc->sc_pci_subvid = pci_get_subvendor(dev); 167 sc->sc_pci_subdid = pci_get_subdevice(dev); 168 169 error = bwi_attach(sc); 170 if (error == 0) /* success */ 171 return 0; 172 173 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle); 174bad2: 175 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 176bad1: 177 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 178bad: 179 return (error); 180} 181 182static int 183bwi_pci_detach(device_t dev) 184{ 185 struct bwi_pci_softc *psc = device_get_softc(dev); 186 struct bwi_softc *sc = &psc->sc_sc; 187 188 /* check if device was removed */ 189 sc->sc_invalid = !bus_child_present(dev); 190 191 bwi_detach(sc); 192 193 bus_generic_detach(dev); 194 bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_irq_handle); 195 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 196 197 bus_release_resource(dev, SYS_RES_MEMORY, BS_BAR, sc->sc_mem_res); 198 199 return (0); 200} 201 202static int 203bwi_pci_shutdown(device_t dev) 204{ 205 struct bwi_pci_softc *psc = device_get_softc(dev); 206 207 bwi_shutdown(&psc->sc_sc); 208 return (0); 209} 210 211static int 212bwi_pci_suspend(device_t dev) 213{ 214 struct bwi_pci_softc *psc = device_get_softc(dev); 215 216 bwi_suspend(&psc->sc_sc); 217 218 return (0); 219} 220 221static int 222bwi_pci_resume(device_t dev) 223{ 224 struct bwi_pci_softc *psc = device_get_softc(dev); 225 226 bwi_resume(&psc->sc_sc); 227 228 return (0); 229} 230 231static device_method_t bwi_pci_methods[] = { 232 /* Device interface */ 233 DEVMETHOD(device_probe, bwi_pci_probe), 234 DEVMETHOD(device_attach, bwi_pci_attach), 235 DEVMETHOD(device_detach, bwi_pci_detach), 236 DEVMETHOD(device_shutdown, bwi_pci_shutdown), 237 DEVMETHOD(device_suspend, bwi_pci_suspend), 238 DEVMETHOD(device_resume, bwi_pci_resume), 239 240 { 0,0 } 241}; 242static driver_t bwi_driver = { 243 "bwi", 244 bwi_pci_methods, 245 sizeof (struct bwi_pci_softc) 246}; 247static devclass_t bwi_devclass; 248DRIVER_MODULE(if_bwi, pci, bwi_driver, bwi_devclass, 0, 0); 249DRIVER_MODULE(bwi, cardbus, bwi_driver, bwi_devclass, 0, 0); 250MODULE_VERSION(if_bwi, 1); 251MODULE_DEPEND(if_bwi, wlan, 1, 1, 1); /* 802.11 media layer */ 252MODULE_DEPEND(if_bwi, firmware, 1, 1, 1); /* firmware support */ 253MODULE_DEPEND(if_bwi, wlan_amrr, 1, 1, 1); 254