1 /* $OpenBSD: if_ath_pci.c,v 1.20 2009/08/10 20:29:52 deraadt Exp $ */ 2 /* $NetBSD: if_ath_pci.c,v 1.7 2004/06/30 05:58:17 mycroft Exp $ */ 3 4 /*- 5 * Copyright (c) 2002-2004 Sam Leffler, Errno Consulting 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer, 13 * without modification. 14 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 15 * similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any 16 * redistribution must be conditioned upon including a substantially 17 * similar Disclaimer requirement for further binary redistribution. 18 * 3. Neither the names of the above-listed copyright holders nor the names 19 * of any contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * NO WARRANTY 23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY 26 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 27 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, 28 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 29 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 30 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 31 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 32 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 33 * THE POSSIBILITY OF SUCH DAMAGES. 34 */ 35 36 /* 37 * PCI front-end for the Atheros Wireless LAN controller driver. 38 */ 39 40 #include <sys/param.h> 41 #include <sys/systm.h> 42 #include <sys/mbuf.h> 43 #include <sys/malloc.h> 44 #include <sys/kernel.h> 45 #include <sys/lock.h> 46 #include <sys/socket.h> 47 #include <sys/sockio.h> 48 #include <sys/errno.h> 49 #include <sys/device.h> 50 #include <sys/gpio.h> 51 52 #include <machine/bus.h> 53 54 #include <net/if.h> 55 #include <net/if_dl.h> 56 #include <net/if_media.h> 57 #include <net/if_llc.h> 58 #include <net/if_arp.h> 59 #ifdef INET 60 #include <netinet/in.h> 61 #include <netinet/if_ether.h> 62 #endif 63 64 #include <net80211/ieee80211_var.h> 65 #include <net80211/ieee80211_rssadapt.h> 66 67 #include <dev/gpio/gpiovar.h> 68 69 #include <dev/pci/pcivar.h> 70 #include <dev/pci/pcireg.h> 71 #include <dev/pci/pcidevs.h> 72 73 #include <dev/ic/athvar.h> 74 75 /* 76 * PCI glue. 77 */ 78 79 struct ath_pci_softc { 80 struct ath_softc sc_sc; 81 82 pci_chipset_tag_t sc_pc; 83 pcitag_t sc_pcitag; 84 85 void *sc_ih; /* Interrupt handler. */ 86 }; 87 88 /* Base Address Register */ 89 #define ATH_BAR0 0x10 90 91 int ath_pci_match(struct device *, void *, void *); 92 void ath_pci_attach(struct device *, struct device *, void *); 93 int ath_pci_detach(struct device *, int); 94 95 struct cfattach ath_pci_ca = { 96 sizeof(struct ath_pci_softc), 97 ath_pci_match, 98 ath_pci_attach, 99 ath_pci_detach 100 }; 101 102 int 103 ath_pci_match(struct device *parent, void *match, void *aux) 104 { 105 const char* devname; 106 struct pci_attach_args *pa = aux; 107 pci_vendor_id_t vendor; 108 109 vendor = PCI_VENDOR(pa->pa_id); 110 if (vendor == 0x128c) 111 vendor = PCI_VENDOR_ATHEROS; 112 devname = ath_hal_probe(vendor, PCI_PRODUCT(pa->pa_id)); 113 if (devname) 114 return 1; 115 116 return 0; 117 } 118 119 void 120 ath_pci_attach(struct device *parent, struct device *self, void *aux) 121 { 122 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 123 struct ath_softc *sc = &psc->sc_sc; 124 struct pci_attach_args *pa = aux; 125 pci_chipset_tag_t pc = pa->pa_pc; 126 pcitag_t pt = pa->pa_tag; 127 pci_intr_handle_t ih; 128 pcireg_t mem_type; 129 const char *intrstr = NULL; 130 131 psc->sc_pc = pc; 132 psc->sc_pcitag = pt; 133 134 /* 135 * Setup memory-mapping of PCI registers. 136 */ 137 mem_type = pci_mapreg_type(pc, pa->pa_tag, ATH_BAR0); 138 if (mem_type != PCI_MAPREG_TYPE_MEM && 139 mem_type != PCI_MAPREG_MEM_TYPE_64BIT) { 140 printf(": bad PCI register type %d\n", (int)mem_type); 141 goto fail; 142 } 143 if (pci_mapreg_map(pa, ATH_BAR0, mem_type, 0, &sc->sc_st, &sc->sc_sh, 144 NULL, &sc->sc_ss, 0)) { 145 printf(": can't map register space\n"); 146 goto fail; 147 } 148 149 /* 150 * PCI Express check. 151 */ 152 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PCIEXPRESS, 153 NULL, NULL) != 0) 154 sc->sc_pcie = 1; 155 156 sc->sc_invalid = 1; 157 158 /* 159 * Arrange interrupt line. 160 */ 161 if (pci_intr_map(pa, &ih)) { 162 printf(": can't map interrupt\n"); 163 goto unmap; 164 } 165 166 intrstr = pci_intr_string(pc, ih); 167 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ath_intr, sc, 168 sc->sc_dev.dv_xname); 169 if (psc->sc_ih == NULL) { 170 printf(": can't map interrupt\n"); 171 goto unmap; 172 } 173 174 printf(": %s\n", intrstr); 175 176 sc->sc_dmat = pa->pa_dmat; 177 178 if (ath_attach(PCI_PRODUCT(pa->pa_id), sc) == 0) 179 return; 180 181 pci_intr_disestablish(pc, psc->sc_ih); 182 unmap: 183 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 184 fail: 185 return; 186 } 187 188 int 189 ath_pci_detach(struct device *self, int flags) 190 { 191 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 192 struct ath_softc *sc = &psc->sc_sc; 193 194 ath_detach(&psc->sc_sc, flags); 195 196 if (psc->sc_ih != NULL) { 197 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 198 psc->sc_ih = NULL; 199 } 200 201 if (sc->sc_ss != 0) { 202 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 203 sc->sc_ss = 0; 204 } 205 206 return (0); 207 } 208