1 /* $OpenBSD: if_ath_pci.c,v 1.26 2015/11/24 17:11:39 mpi 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_media.h> 56 #include <netinet/in.h> 57 #include <netinet/if_ether.h> 58 59 #include <net80211/ieee80211_var.h> 60 #include <net80211/ieee80211_rssadapt.h> 61 62 #include <dev/gpio/gpiovar.h> 63 64 #include <dev/pci/pcivar.h> 65 #include <dev/pci/pcireg.h> 66 #include <dev/pci/pcidevs.h> 67 68 #include <dev/ic/athvar.h> 69 70 /* 71 * PCI glue. 72 */ 73 74 struct ath_pci_softc { 75 struct ath_softc sc_sc; 76 77 pci_chipset_tag_t sc_pc; 78 pcitag_t sc_pcitag; 79 80 void *sc_ih; /* Interrupt handler. */ 81 }; 82 83 /* Base Address Register */ 84 #define ATH_BAR0 0x10 85 86 int ath_pci_match(struct device *, void *, void *); 87 void ath_pci_attach(struct device *, struct device *, void *); 88 int ath_pci_detach(struct device *, int); 89 90 struct cfattach ath_pci_ca = { 91 sizeof(struct ath_pci_softc), 92 ath_pci_match, 93 ath_pci_attach, 94 ath_pci_detach, 95 ath_activate 96 }; 97 98 int 99 ath_pci_match(struct device *parent, void *match, void *aux) 100 { 101 const char* devname; 102 struct pci_attach_args *pa = aux; 103 pci_vendor_id_t vendor; 104 105 vendor = PCI_VENDOR(pa->pa_id); 106 if (vendor == 0x128c) 107 vendor = PCI_VENDOR_ATHEROS; 108 devname = ath_hal_probe(vendor, PCI_PRODUCT(pa->pa_id)); 109 if (devname) 110 return 1; 111 112 return 0; 113 } 114 115 void 116 ath_pci_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 119 struct ath_softc *sc = &psc->sc_sc; 120 struct pci_attach_args *pa = aux; 121 pci_chipset_tag_t pc = pa->pa_pc; 122 pcitag_t pt = pa->pa_tag; 123 pci_intr_handle_t ih; 124 pcireg_t mem_type; 125 const char *intrstr = NULL; 126 127 psc->sc_pc = pc; 128 psc->sc_pcitag = pt; 129 130 /* 131 * Setup memory-mapping of PCI registers. 132 */ 133 mem_type = pci_mapreg_type(pc, pa->pa_tag, ATH_BAR0); 134 if (mem_type != PCI_MAPREG_TYPE_MEM && 135 mem_type != PCI_MAPREG_MEM_TYPE_64BIT) { 136 printf(": bad PCI register type %d\n", (int)mem_type); 137 goto fail; 138 } 139 if (pci_mapreg_map(pa, ATH_BAR0, mem_type, 0, &sc->sc_st, &sc->sc_sh, 140 NULL, &sc->sc_ss, 0)) { 141 printf(": can't map register space\n"); 142 goto fail; 143 } 144 145 /* 146 * PCI Express check. 147 */ 148 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PCIEXPRESS, 149 NULL, NULL) != 0) 150 sc->sc_pcie = 1; 151 152 sc->sc_invalid = 1; 153 154 /* 155 * Arrange interrupt line. 156 */ 157 if (pci_intr_map(pa, &ih)) { 158 printf(": can't map interrupt\n"); 159 goto unmap; 160 } 161 162 intrstr = pci_intr_string(pc, ih); 163 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ath_intr, sc, 164 sc->sc_dev.dv_xname); 165 if (psc->sc_ih == NULL) { 166 printf(": can't map interrupt\n"); 167 goto unmap; 168 } 169 170 printf(": %s\n", intrstr); 171 172 sc->sc_dmat = pa->pa_dmat; 173 174 if (ath_attach(PCI_PRODUCT(pa->pa_id), sc) == 0) 175 return; 176 177 pci_intr_disestablish(pc, psc->sc_ih); 178 unmap: 179 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 180 fail: 181 return; 182 } 183 184 int 185 ath_pci_detach(struct device *self, int flags) 186 { 187 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 188 struct ath_softc *sc = &psc->sc_sc; 189 190 ath_detach(&psc->sc_sc, flags); 191 192 if (psc->sc_ih != NULL) { 193 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 194 psc->sc_ih = NULL; 195 } 196 197 if (sc->sc_ss != 0) { 198 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 199 sc->sc_ss = 0; 200 } 201 202 return (0); 203 } 204