| 1 | /* $NetBSD: if_bwi_pci.c,v 1.15 2016/07/07 06:55:41 msaitoh 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@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 1.15 2016/07/07 06:55:41 msaitoh 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 int |
| 78 | bwi_pci_match(device_t parent, cfdata_t match, void *aux) |
| 79 | { |
| 80 | struct pci_attach_args *pa = aux; |
| 81 | |
| 82 | if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_BROADCOM) |
| 83 | return (0); |
| 84 | |
| 85 | switch (PCI_PRODUCT(pa->pa_id)) { |
| 86 | case PCI_PRODUCT_BROADCOM_BCM4303: |
| 87 | case PCI_PRODUCT_BROADCOM_BCM4306: |
| 88 | case PCI_PRODUCT_BROADCOM_BCM4306_2: |
| 89 | case PCI_PRODUCT_BROADCOM_BCM4307: |
| 90 | case PCI_PRODUCT_BROADCOM_BCM4309: |
| 91 | case PCI_PRODUCT_BROADCOM_BCM4311: |
| 92 | case PCI_PRODUCT_BROADCOM_BCM4312: |
| 93 | case PCI_PRODUCT_BROADCOM_BCM4318: |
| 94 | case PCI_PRODUCT_BROADCOM_BCM4319: |
| 95 | case PCI_PRODUCT_BROADCOM_BCM4322: |
| 96 | case PCI_PRODUCT_BROADCOM_BCM43XG: |
| 97 | case PCI_PRODUCT_BROADCOM_BCM4328: |
| 98 | return (1); |
| 99 | } |
| 100 | |
| 101 | return (0); |
| 102 | } |
| 103 | |
| 104 | static void |
| 105 | bwi_pci_attach(device_t parent, device_t self, void *aux) |
| 106 | { |
| 107 | struct bwi_pci_softc *psc = device_private(self); |
| 108 | struct pci_attach_args *pa = aux; |
| 109 | struct bwi_softc *sc = &psc->psc_bwi; |
| 110 | const char *intrstr = NULL; |
| 111 | pci_intr_handle_t ih; |
| 112 | pcireg_t memtype, reg; |
| 113 | int error = 0; |
| 114 | char intrbuf[PCI_INTRSTR_LEN]; |
| 115 | |
| 116 | aprint_naive("\n" ); |
| 117 | aprint_normal(": Broadcom Wireless\n" ); |
| 118 | |
| 119 | sc->sc_dev = self; |
| 120 | sc->sc_dmat = pa->pa_dmat; |
| 121 | psc->psc_pc = pa->pa_pc; |
| 122 | psc->psc_pcitag = pa->pa_tag; |
| 123 | |
| 124 | /* map control / status registers */ |
| 125 | memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, BWI_PCI_BAR0); |
| 126 | switch (memtype) { |
| 127 | case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT: |
| 128 | case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT: |
| 129 | break; |
| 130 | default: |
| 131 | aprint_error_dev(self, "invalid base address register\n" ); |
| 132 | return; |
| 133 | } |
| 134 | |
| 135 | if (pci_mapreg_map(pa, BWI_PCI_BAR0, memtype, 0, &sc->sc_mem_bt, |
| 136 | &sc->sc_mem_bh, NULL, &psc->psc_mapsize) != 0) { |
| 137 | aprint_error_dev(self, "could not map mem space\n" ); |
| 138 | return; |
| 139 | } |
| 140 | |
| 141 | /* map interrupt */ |
| 142 | if (pci_intr_map(pa, &ih) != 0) { |
| 143 | aprint_error_dev(self, "could not map interrupt\n" ); |
| 144 | goto fail; |
| 145 | } |
| 146 | |
| 147 | /* establish interrupt */ |
| 148 | intrstr = pci_intr_string(psc->psc_pc, ih, intrbuf, sizeof(intrbuf)); |
| 149 | sc->sc_ih = pci_intr_establish(psc->psc_pc, ih, IPL_NET, bwi_intr, sc); |
| 150 | if (sc->sc_ih == NULL) { |
| 151 | aprint_error_dev(self, "could not establish interrupt" ); |
| 152 | if (intrstr != NULL) |
| 153 | aprint_error(" at %s" , intrstr); |
| 154 | aprint_error("\n" ); |
| 155 | goto fail; |
| 156 | } |
| 157 | aprint_normal_dev(self, "interrupting at %s\n" , intrstr); |
| 158 | |
| 159 | /* we need to access PCI config space from the driver */ |
| 160 | sc->sc_conf_write = bwi_pci_conf_write; |
| 161 | sc->sc_conf_read = bwi_pci_conf_read; |
| 162 | |
| 163 | reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG); |
| 164 | |
| 165 | sc->sc_pci_revid = PCI_REVISION(pa->pa_class); |
| 166 | sc->sc_pci_did = PCI_PRODUCT(pa->pa_id); |
| 167 | sc->sc_pci_subvid = PCI_VENDOR(reg); |
| 168 | sc->sc_pci_subdid = PCI_PRODUCT(reg); |
| 169 | |
| 170 | if (!pmf_device_register(self, bwi_suspend, bwi_resume)) |
| 171 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
| 172 | |
| 173 | error = bwi_attach(sc); |
| 174 | if (error) |
| 175 | goto fail; |
| 176 | return; |
| 177 | |
| 178 | fail: |
| 179 | if (sc->sc_ih) { |
| 180 | pci_intr_disestablish(psc->psc_pc, sc->sc_ih); |
| 181 | sc->sc_ih = NULL; |
| 182 | } |
| 183 | if (psc->psc_mapsize) { |
| 184 | bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, psc->psc_mapsize); |
| 185 | psc->psc_mapsize = 0; |
| 186 | } |
| 187 | return; |
| 188 | } |
| 189 | |
| 190 | int |
| 191 | bwi_pci_detach(device_t self, int flags) |
| 192 | { |
| 193 | struct bwi_pci_softc *psc = device_private(self); |
| 194 | struct bwi_softc *sc = &psc->psc_bwi; |
| 195 | |
| 196 | pmf_device_deregister(self); |
| 197 | |
| 198 | bwi_detach(sc); |
| 199 | |
| 200 | if (sc->sc_ih != NULL) { |
| 201 | pci_intr_disestablish(psc->psc_pc, sc->sc_ih); |
| 202 | sc->sc_ih = NULL; |
| 203 | } |
| 204 | |
| 205 | return (0); |
| 206 | } |
| 207 | |
| 208 | static void |
| 209 | bwi_pci_conf_write(void *sc, uint32_t reg, uint32_t val) |
| 210 | { |
| 211 | struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; |
| 212 | |
| 213 | pci_conf_write(psc->psc_pc, psc->psc_pcitag, reg, val); |
| 214 | } |
| 215 | |
| 216 | static uint32_t |
| 217 | bwi_pci_conf_read(void *sc, uint32_t reg) |
| 218 | { |
| 219 | struct bwi_pci_softc *psc = (struct bwi_pci_softc *)sc; |
| 220 | |
| 221 | return (pci_conf_read(psc->psc_pc, psc->psc_pcitag, reg)); |
| 222 | } |
| 223 | |