1 /* $OpenBSD: if_ath_pci.c,v 1.28 2024/05/24 06:02:53 jsg 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/device.h> 43 #include <sys/gpio.h> 44 45 #include <machine/bus.h> 46 47 #include <net/if.h> 48 #include <net/if_media.h> 49 #include <netinet/in.h> 50 #include <netinet/if_ether.h> 51 52 #include <net80211/ieee80211_var.h> 53 #include <net80211/ieee80211_rssadapt.h> 54 55 #include <dev/gpio/gpiovar.h> 56 57 #include <dev/pci/pcivar.h> 58 #include <dev/pci/pcireg.h> 59 #include <dev/pci/pcidevs.h> 60 61 #include <dev/ic/athvar.h> 62 63 /* 64 * PCI glue. 65 */ 66 67 struct ath_pci_softc { 68 struct ath_softc sc_sc; 69 70 pci_chipset_tag_t sc_pc; 71 pcitag_t sc_pcitag; 72 73 void *sc_ih; /* Interrupt handler. */ 74 }; 75 76 /* Base Address Register */ 77 #define ATH_BAR0 0x10 78 79 int ath_pci_match(struct device *, void *, void *); 80 void ath_pci_attach(struct device *, struct device *, void *); 81 int ath_pci_detach(struct device *, int); 82 83 const struct cfattach ath_pci_ca = { 84 sizeof(struct ath_pci_softc), 85 ath_pci_match, 86 ath_pci_attach, 87 ath_pci_detach, 88 ath_activate 89 }; 90 91 int 92 ath_pci_match(struct device *parent, void *match, void *aux) 93 { 94 const char* devname; 95 struct pci_attach_args *pa = aux; 96 pci_vendor_id_t vendor; 97 98 vendor = PCI_VENDOR(pa->pa_id); 99 if (vendor == 0x128c) 100 vendor = PCI_VENDOR_ATHEROS; 101 devname = ath_hal_probe(vendor, PCI_PRODUCT(pa->pa_id)); 102 if (devname) 103 return 1; 104 105 return 0; 106 } 107 108 void 109 ath_pci_attach(struct device *parent, struct device *self, void *aux) 110 { 111 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 112 struct ath_softc *sc = &psc->sc_sc; 113 struct pci_attach_args *pa = aux; 114 pci_chipset_tag_t pc = pa->pa_pc; 115 pcitag_t pt = pa->pa_tag; 116 pci_intr_handle_t ih; 117 pcireg_t mem_type; 118 const char *intrstr = NULL; 119 120 psc->sc_pc = pc; 121 psc->sc_pcitag = pt; 122 123 /* 124 * Setup memory-mapping of PCI registers. 125 */ 126 mem_type = pci_mapreg_type(pc, pa->pa_tag, ATH_BAR0); 127 if (mem_type != PCI_MAPREG_TYPE_MEM && 128 mem_type != PCI_MAPREG_MEM_TYPE_64BIT) { 129 printf(": bad PCI register type %d\n", (int)mem_type); 130 goto fail; 131 } 132 if (pci_mapreg_map(pa, ATH_BAR0, mem_type, 0, &sc->sc_st, &sc->sc_sh, 133 NULL, &sc->sc_ss, 0)) { 134 printf(": can't map register space\n"); 135 goto fail; 136 } 137 138 /* 139 * PCI Express check. 140 */ 141 if (pci_get_capability(pc, pa->pa_tag, PCI_CAP_PCIEXPRESS, 142 NULL, NULL) != 0) 143 sc->sc_pcie = 1; 144 145 sc->sc_invalid = 1; 146 147 /* 148 * Arrange interrupt line. 149 */ 150 if (pci_intr_map(pa, &ih)) { 151 printf(": can't map interrupt\n"); 152 goto unmap; 153 } 154 155 intrstr = pci_intr_string(pc, ih); 156 psc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, ath_intr, sc, 157 sc->sc_dev.dv_xname); 158 if (psc->sc_ih == NULL) { 159 printf(": can't map interrupt\n"); 160 goto unmap; 161 } 162 163 printf(": %s\n", intrstr); 164 165 sc->sc_dmat = pa->pa_dmat; 166 167 if (ath_attach(PCI_PRODUCT(pa->pa_id), sc) == 0) 168 return; 169 170 pci_intr_disestablish(pc, psc->sc_ih); 171 unmap: 172 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 173 fail: 174 return; 175 } 176 177 int 178 ath_pci_detach(struct device *self, int flags) 179 { 180 struct ath_pci_softc *psc = (struct ath_pci_softc *)self; 181 struct ath_softc *sc = &psc->sc_sc; 182 183 ath_detach(&psc->sc_sc, flags); 184 185 if (psc->sc_ih != NULL) { 186 pci_intr_disestablish(psc->sc_pc, psc->sc_ih); 187 psc->sc_ih = NULL; 188 } 189 190 if (sc->sc_ss != 0) { 191 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_ss); 192 sc->sc_ss = 0; 193 } 194 195 return (0); 196 } 197