if_bwi_pci.c revision 1.17
1 /* $NetBSD: if_bwi_pci.c,v 1.17 2021/05/08 00:27:02 thorpej Exp $ */ 2 /* $OpenBSD: if_bwi_pci.c,v 1.6 2008/02/14 22:10:02 brad Exp $ */ 3 4 /* 5 * Copyright (c) 2007 Marcus Glocker <mglocker (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* 21 * Broadcom AirForce BCM43xx IEEE 802.11b/g wireless network driver 22 * PCI front end 23 */ 24 25 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: if_bwi_pci.c,v 1.17 2021/05/08 00:27:02 thorpej Exp $"); 28 29 #include <sys/param.h> 30 #include <sys/callout.h> 31 #include <sys/device.h> 32 #include <sys/kernel.h> 33 #include <sys/malloc.h> 34 #include <sys/mbuf.h> 35 #include <sys/socket.h> 36 #include <sys/sockio.h> 37 #include <sys/systm.h> 38 39 #include <sys/bus.h> 40 41 #include <net/if.h> 42 #include <net/if_dl.h> 43 #include <net/if_ether.h> 44 #include <net/if_media.h> 45 46 #include <net80211/ieee80211_var.h> 47 #include <net80211/ieee80211_amrr.h> 48 #include <net80211/ieee80211_radiotap.h> 49 50 #include <dev/ic/bwivar.h> 51 52 #include <dev/pci/pcireg.h> 53 #include <dev/pci/pcivar.h> 54 #include <dev/pci/pcidevs.h> 55 56 /* Base Address Register */ 57 #define BWI_PCI_BAR0 PCI_BAR(0) 58 59 static int bwi_pci_match(device_t, cfdata_t, void *); 60 static void bwi_pci_attach(device_t, device_t, void *); 61 static int bwi_pci_detach(device_t, int); 62 static void bwi_pci_conf_write(void *, uint32_t, uint32_t); 63 static uint32_t bwi_pci_conf_read(void *, uint32_t); 64 65 struct bwi_pci_softc { 66 struct bwi_softc psc_bwi; 67 68 pci_chipset_tag_t psc_pc; 69 pcitag_t psc_pcitag; 70 71 bus_size_t psc_mapsize; 72 }; 73 74 CFATTACH_DECL_NEW(bwi_pci, sizeof(struct bwi_pci_softc), 75 bwi_pci_match, bwi_pci_attach, bwi_pci_detach, NULL); 76 77 static const struct device_compatible_entry compat_data[] = { 78 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 79 PCI_PRODUCT_BROADCOM_BCM4303), }, 80 81 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 82 PCI_PRODUCT_BROADCOM_BCM4306), }, 83 84 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 85 PCI_PRODUCT_BROADCOM_BCM4306_2), }, 86 87 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 88 PCI_PRODUCT_BROADCOM_BCM4307), }, 89 90 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 91 PCI_PRODUCT_BROADCOM_BCM4309), }, 92 93 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 94 PCI_PRODUCT_BROADCOM_BCM4311), }, 95 96 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 97 PCI_PRODUCT_BROADCOM_BCM4312), }, 98 99 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 100 PCI_PRODUCT_BROADCOM_BCM4318), }, 101 102 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 103 PCI_PRODUCT_BROADCOM_BCM4319), }, 104 105 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 106 PCI_PRODUCT_BROADCOM_BCM4322), }, 107 108 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 109 PCI_PRODUCT_BROADCOM_BCM43XG), }, 110 111 { .id = PCI_ID_CODE(PCI_VENDOR_BROADCOM, 112 PCI_PRODUCT_BROADCOM_BCM4328), }, 113 114 PCI_COMPAT_EOL 115 }; 116 117 static int 118 bwi_pci_match(device_t parent, cfdata_t match, void *aux) 119 { 120 struct pci_attach_args *pa = aux; 121 122 return pci_compatible_match(pa, compat_data); 123 } 124 125 static void 126 bwi_pci_attach(device_t parent, device_t self, void *aux) 127 { 128 struct bwi_pci_softc *psc = device_private(self); 129 struct pci_attach_args *pa = aux; 130 struct bwi_softc *sc = &psc->psc_bwi; 131 const char *intrstr = NULL; 132 pci_intr_handle_t ih; 133 pcireg_t memtype, reg; 134 int error = 0; 135 char intrbuf[PCI_INTRSTR_LEN]; 136 137 aprint_naive("\n"); 138 aprint_normal(": Broadcom Wireless\n"); 139 140 sc->sc_dev = self; 141 sc->sc_dmat = pa->pa_dmat; 142 psc->psc_pc = pa->pa_pc; 143 psc->psc_pcitag = pa->pa_tag; 144 145 /* map control / status registers */ 146 memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0); 147 switch (memtype) { 148 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: 149 case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: 150 break; 151 default: 152 aprint_error_dev(self, "invalid base address register\n"); 153 return; 154 } 155 156 if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt, 157 &sc->sc_mem_bh, NULL, &psc->psc_mapsize) != 0) { 158 aprint_error_dev(self, "could not map mem space\n"); 159 return; 160 } 161 162 /* map interrupt */ 163 if (pci_intr_map(pa, &ih) != 0) { 164 aprint_error_dev(self, "could not map interrupt\n"); 165 goto fail; 166 } 167 168 /* establish interrupt */ 169 intrstr = pci_intr_string(psc->psc_pc, ih, intrbuf, sizeof(intrbuf)); 170 sc->sc_ih = pci_intr_establish_xname(psc->psc_pc, ih, IPL_NET, bwi_intr, 171 sc, device_xname(self)); 172 if (sc->sc_ih == NULL) { 173 aprint_error_dev(self, "could not establish interrupt"); 174 if (intrstr != NULL) 175 aprint_error(" at %s", intrstr); 176 aprint_error("\n"); 177 goto fail; 178 } 179 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 180 181 /* we need to access PCI config space from the driver */ 182 sc->sc_conf_write = bwi_pci_conf_write; 183 sc->sc_conf_read = bwi_pci_conf_read; 184 185 reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); 186 187 sc->sc_pci_revid = PCI_REVISION(pa->pa_class); 188 sc->sc_pci_did = PCI_PRODUCT(pa->pa_id); 189 sc->sc_pci_subvid = PCI_VENDOR(reg); 190 sc->sc_pci_subdid = PCI_PRODUCT(reg); 191 192 if (!pmf_device_register(self, bwi_suspend, bwi_resume)) 193 aprint_error_dev(self, "couldn't establish power handler\n"); 194 195 error = bwi_attach(sc); 196 if (error) 197 goto fail; 198 return; 199 200 fail: 201 if (sc->sc_ih) { 202 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 203 sc->sc_ih = NULL; 204 } 205 if (psc->psc_mapsize) { 206 bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize); 207 psc->psc_mapsize = 0; 208 } 209 return; 210 } 211 212 int 213 bwi_pci_detach(device_t self, int flags) 214 { 215 struct bwi_pci_softc *psc = device_private(self); 216 struct bwi_softc *sc = &psc->psc_bwi; 217 218 pmf_device_deregister(self); 219 220 bwi_detach(sc); 221 222 if (sc->sc_ih != NULL) { 223 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 224 sc->sc_ih = NULL; 225 } 226 227 return (0); 228 } 229 230 static void 231 bwi_pci_conf_write(void *sc, uint32_t reg, uint32_t val) 232 { 233 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; 234 235 pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val); 236 } 237 238 static uint32_t 239 bwi_pci_conf_read(void *sc, uint32_t reg) 240 { 241 struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; 242 243 return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg)); 244 } 245
Indexes created Wed Sep 24 05:09:52 GMT 2025