1 /* $NetBSD: if_bwi_cardbus.c,v 1.3 2022/09/25 17:33:19 thorpej Exp $ */ 2 /* $OpenBSD: if_bwi_cardbus.c,v 1.13 2010/08/06 05:26:24 mglocker Exp $ */ 3 4 /* 5 * Copyright (c) 2007 Marcus Glocker <mglocker (at) openbsd.org> 6 * Copyright (c) 2006 Claudio Jeker <claudio (at) openbsd.org> 7 * 8 * Permission to use, copy, modify, and distribute this software for any 9 * purpose with or without fee is hereby granted, provided that the above 10 * copyright notice and this permission notice appear in all copies. 11 * 12 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 */ 20 21 /* 22 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver 23 * CardBus front end 24 */ 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_bwi_cardbus.c,v 1.3 2022/09/25 17:33:19 thorpej Exp $"); 28 29 #include "opt_inet.h" 30 31 #include <sys/param.h> 32 #include <sys/callout.h> 33 #include <sys/device.h> 34 #include <sys/kernel.h> 35 #include <sys/mbuf.h> 36 #include <sys/socket.h> 37 #include <sys/sockio.h> 38 #include <sys/systm.h> 39 #include <sys/errno.h> 40 41 #include <machine/endian.h> 42 43 #include <net/if.h> 44 #include <net/if_dl.h> 45 #include <net/if_ether.h> 46 #include <net/if_media.h> 47 48 #include <net80211/ieee80211_var.h> 49 #include <net80211/ieee80211_amrr.h> 50 #include <net80211/ieee80211_radiotap.h> 51 52 #include <dev/pci/pcireg.h> 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcidevs.h> 55 56 #include <dev/cardbus/cardbusvar.h> 57 58 #include <dev/ic/bwireg.h> 59 #include <dev/ic/bwivar.h> 60 61 struct bwi_cardbus_softc { 62 struct bwi_softc csc_bwi; 63 64 /* cardbus specific goo */ 65 cardbus_devfunc_t csc_ct; 66 pcitag_t csc_tag; 67 68 bus_size_t csc_mapsize; 69 pcireg_t csc_bar_val; 70 }; 71 72 static int bwi_cardbus_match(device_t, cfdata_t, void *); 73 static void bwi_cardbus_attach(device_t, device_t, void *); 74 static int bwi_cardbus_detach(device_t, int); 75 static void bwi_cardbus_setup(struct bwi_cardbus_softc *); 76 static int bwi_cardbus_enable(struct bwi_softc *, int); 77 static void bwi_cardbus_disable(struct bwi_softc *, int); 78 static void bwi_cardbus_conf_write(void *, uint32_t, uint32_t); 79 static uint32_t bwi_cardbus_conf_read(void *, uint32_t); 80 81 CFATTACH_DECL_NEW(bwi_cardbus, sizeof (struct bwi_cardbus_softc), 82 bwi_cardbus_match, bwi_cardbus_attach, bwi_cardbus_detach, NULL); 83 84 static int 85 bwi_cardbus_match(device_t parent, cfdata_t match, void *aux) 86 { 87 struct cardbus_attach_args *ca = aux; 88 89 if (PCI_VENDOR(ca->ca_id) == PCI_VENDOR_BROADCOM) { 90 switch (PCI_PRODUCT(ca->ca_id)) { 91 case PCI_PRODUCT_BROADCOM_BCM4303: 92 case PCI_PRODUCT_BROADCOM_BCM4306: 93 case PCI_PRODUCT_BROADCOM_BCM4306_2: 94 case PCI_PRODUCT_BROADCOM_BCM4307: 95 case PCI_PRODUCT_BROADCOM_BCM4309: 96 case PCI_PRODUCT_BROADCOM_BCM4311: 97 case PCI_PRODUCT_BROADCOM_BCM4312: 98 case PCI_PRODUCT_BROADCOM_BCM4318: 99 case PCI_PRODUCT_BROADCOM_BCM4319: 100 case PCI_PRODUCT_BROADCOM_BCM4322: 101 case PCI_PRODUCT_BROADCOM_BCM43XG: 102 case PCI_PRODUCT_BROADCOM_BCM4328: 103 return (1); 104 default: 105 return (0); 106 } 107 } 108 109 return (0); 110 } 111 112 static void 113 bwi_cardbus_attach(device_t parent, device_t self, void *aux) 114 { 115 struct bwi_cardbus_softc *csc = device_private(self); 116 struct cardbus_attach_args *ca = aux; 117 struct bwi_softc *sc = &csc->csc_bwi; 118 cardbus_devfunc_t ct = ca->ca_ct; 119 pcireg_t reg; 120 bus_addr_t base; 121 int error; 122 123 aprint_naive("\n"); 124 aprint_normal(": Broadcom Wireless\n"); 125 126 sc->sc_dev = self; 127 sc->sc_dmat = ca->ca_dmat; 128 csc->csc_ct = ct; 129 csc->csc_tag = ca->ca_tag; 130 131 /* power management hooks */ 132 sc->sc_enable = bwi_cardbus_enable; 133 sc->sc_disable = bwi_cardbus_disable; 134 135 /* map control/status registers */ 136 error = Cardbus_mapreg_map(ct, BWI_PCIR_BAR, 137 PCI_MAPREG_TYPE_MEM, 0, &sc->sc_mem_bt, 138 &sc->sc_mem_bh, &base, &csc->csc_mapsize); 139 if (error != 0) { 140 aprint_error_dev(self, "can't map mem space\n"); 141 return; 142 } 143 csc->csc_bar_val = base | PCI_MAPREG_TYPE_MEM; 144 145 /* set up the PCI configuration registers */ 146 bwi_cardbus_setup(csc); 147 148 /* we need to access Cardbus config space from the driver */ 149 sc->sc_conf_read = bwi_cardbus_conf_read; 150 sc->sc_conf_write = bwi_cardbus_conf_write; 151 152 reg = (sc->sc_conf_read)(sc, PCI_SUBSYS_ID_REG); 153 154 sc->sc_pci_revid = PCI_REVISION(ca->ca_class); 155 sc->sc_pci_did = PCI_PRODUCT(ca->ca_id); 156 sc->sc_pci_subvid = PCI_VENDOR(reg); 157 sc->sc_pci_subdid = PCI_PRODUCT(reg); 158 159 if (pmf_device_register(self, bwi_suspend, bwi_resume)) 160 pmf_class_network_register(self, &sc->sc_if); 161 else 162 aprint_error_dev(self, "couldn't establish power handler\n"); 163 164 error = bwi_attach(sc); 165 if (error != 0) 166 bwi_cardbus_detach(self, 0); 167 168 Cardbus_function_disable(ct); 169 } 170 171 static int 172 bwi_cardbus_detach(device_t self, int flags) 173 { 174 struct bwi_cardbus_softc *csc = device_private(self); 175 struct bwi_softc *sc = &csc->csc_bwi; 176 cardbus_devfunc_t ct = csc->csc_ct; 177 178 #ifdef DIAGNOSTIC 179 if (ct == NULL) 180 panic("%s: data structure lacks", device_xname(self)); 181 #endif 182 183 pmf_device_deregister(self); 184 185 bwi_detach(sc); 186 187 /* unhook the interrupt handler */ 188 if (sc->sc_ih != NULL) { 189 Cardbus_intr_disestablish(ct, sc->sc_ih); 190 sc->sc_ih = NULL; 191 } 192 193 /* release bus space and close window */ 194 Cardbus_mapreg_unmap(ct, BWI_PCIR_BAR, sc->sc_mem_bt, 195 sc->sc_mem_bh, csc->csc_mapsize); 196 197 return (0); 198 } 199 200 static void 201 bwi_cardbus_setup(struct bwi_cardbus_softc *csc) 202 { 203 cardbus_devfunc_t ct = csc->csc_ct; 204 pcireg_t reg; 205 206 /* program the BAR */ 207 Cardbus_conf_write(ct, csc->csc_tag, BWI_PCIR_BAR, csc->csc_bar_val); 208 209 /* enable the appropriate bits in the PCI CSR */ 210 reg = Cardbus_conf_read(ct, csc->csc_tag, PCI_COMMAND_STATUS_REG); 211 reg |= PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE; 212 Cardbus_conf_write(ct, csc->csc_tag, PCI_COMMAND_STATUS_REG, reg); 213 } 214 215 static int 216 bwi_cardbus_enable(struct bwi_softc *sc, int pmf) 217 { 218 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc; 219 cardbus_devfunc_t ct = csc->csc_ct; 220 221 if (!pmf) { 222 /* power on the socket */ 223 Cardbus_function_enable(ct); 224 225 /* setup the PCI configuration registers */ 226 bwi_cardbus_setup(csc); 227 } 228 229 /* map and establish the interrupt handler */ 230 sc->sc_ih = Cardbus_intr_establish(ct, IPL_NET, bwi_intr, sc); 231 if (sc->sc_ih == NULL) { 232 aprint_error_dev(sc->sc_dev, 233 "unable to establish interrupt\n"); 234 if (!pmf) 235 Cardbus_function_disable(ct); 236 return (1); 237 } 238 239 return (0); 240 } 241 242 static void 243 bwi_cardbus_disable(struct bwi_softc *sc, int pmf) 244 { 245 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc; 246 cardbus_devfunc_t ct = csc->csc_ct; 247 248 /* unhook the interrupt handler */ 249 if (sc->sc_ih != NULL) { 250 Cardbus_intr_disestablish(ct, sc->sc_ih); 251 sc->sc_ih = NULL; 252 } 253 254 if (!pmf) { 255 /* power down the socket */ 256 Cardbus_function_disable(ct); 257 } 258 } 259 260 static void 261 bwi_cardbus_conf_write(void *sc, uint32_t reg, uint32_t val) 262 { 263 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc; 264 265 Cardbus_conf_write(csc->csc_ct, csc->csc_tag, reg, val); 266 } 267 268 static uint32_t 269 bwi_cardbus_conf_read(void *sc, uint32_t reg) 270 { 271 struct bwi_cardbus_softc *csc = (struct bwi_cardbus_softc *)sc; 272 273 return Cardbus_conf_read(csc->csc_ct, csc->csc_tag, reg); 274 } 275
Indexes created Tue Oct 28 12:10:06 GMT 2025