1 /* $NetBSD: if_wi_pci.c,v 1.1 2001/10/13 15:01:07 ichiro Exp $ */ 2 3 /*- 4 * Copyright (c) 2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Hideaki Imaizumi <hiddy@sfc.wide.ad.jp> 9 * and Ichiro FUKUHARA (ichiro@ichiro.org). 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the NetBSD 22 * Foundation, Inc. and its contributors. 23 * 4. Neither the name of The NetBSD Foundation nor the names of its 24 * contributors may be used to endorse or promote products derived 25 * from this software without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 30 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * PCI bus front-end for the Intersil PCI WaveLan. 42 * Works with Prism2.5 Mini-PCI wavelan. 43 */ 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/mbuf.h> 48 #include <sys/syslog.h> 49 #include <sys/socket.h> 50 #include <sys/device.h> 51 #include <sys/callout.h> 52 53 #include <net/if.h> 54 #include <net/if_ether.h> 55 #include <net/if_media.h> 56 #include <net/if_ieee80211.h> 57 58 #include <machine/bus.h> 59 #include <machine/intr.h> 60 61 #include <dev/pci/pcireg.h> 62 #include <dev/pci/pcivar.h> 63 #include <dev/pci/pcidevs.h> 64 65 #include <dev/ic/wi_ieee.h> 66 #include <dev/ic/wireg.h> 67 #include <dev/ic/wivar.h> 68 69 struct wi_pci_softc { 70 struct wi_softc psc_wi; /* real "wi" softc */ 71 72 /* PCI-specific goo */ 73 pci_intr_handle_t psc_ih; 74 struct pci_attach_args *psc_pa; 75 76 void *sc_powerhook; /* power hook descriptor */ 77 }; 78 79 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 80 static void wi_pci_attach __P((struct device *, struct device *, void *)); 81 static int wi_pci_enable __P((struct wi_softc *)); 82 static void wi_pci_disable __P((struct wi_softc *)); 83 static void wi_pci_powerhook __P((int, void *)); 84 85 static const struct wi_pci_product 86 *wi_pci_lookup __P((struct pci_attach_args *)); 87 88 struct cfattach wi_pci_ca = { 89 sizeof(struct wi_pci_softc), wi_pci_match, wi_pci_attach 90 }; 91 92 const struct wi_pci_product { 93 pci_vendor_id_t wpp_vendor; /* vendor ID */ 94 pci_product_id_t wpp_product; /* product ID */ 95 const char *wpp_name; /* product name */ 96 } wi_pci_products[] = { 97 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 98 "Intersil Prism2.5" }, 99 { 0, 0, 100 NULL}, 101 }; 102 103 static int 104 wi_pci_enable(sc) 105 struct wi_softc *sc; 106 { 107 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 108 109 /* establish the interrupt. */ 110 sc->sc_ih = pci_intr_establish(psc->psc_pa->pa_pc, 111 psc->psc_ih, IPL_NET, wi_intr, sc); 112 if (sc->sc_ih == NULL) { 113 printf("%s: couldn't establish interrupt\n", 114 sc->sc_dev.dv_xname); 115 return (EIO); 116 } 117 sc->sc_pci = 1; 118 119 /* reset HFA3842 MAC core */ 120 wi_pci_reset(sc); 121 122 return (0); 123 } 124 125 static void 126 wi_pci_disable(sc) 127 struct wi_softc *sc; 128 { 129 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 130 131 pci_intr_disestablish(psc->psc_pa->pa_pc, sc->sc_ih); 132 } 133 134 static const struct wi_pci_product * 135 wi_pci_lookup(pa) 136 struct pci_attach_args *pa; 137 { 138 const struct wi_pci_product *wpp; 139 140 for (wpp = wi_pci_products; wpp->wpp_name != NULL; wpp++) { 141 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 142 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 143 return (wpp); 144 } 145 return (NULL); 146 } 147 148 static int 149 wi_pci_match(parent, match, aux) 150 struct device *parent; 151 struct cfdata *match; 152 void *aux; 153 { 154 struct pci_attach_args *pa = aux; 155 156 if (wi_pci_lookup(pa) != NULL) 157 return (1); 158 return (0); 159 } 160 161 static void 162 wi_pci_attach(parent, self, aux) 163 struct device *parent, *self; 164 void *aux; 165 { 166 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 167 struct wi_softc *sc = &psc->psc_wi; 168 struct pci_attach_args *pa = aux; 169 pci_chipset_tag_t pc = pa->pa_pc; 170 const char *intrstr; 171 const struct wi_pci_product *wpp; 172 pci_intr_handle_t ih; 173 bus_space_tag_t memt; 174 bus_space_handle_t memh; 175 int memh_valid; 176 bus_addr_t busbase; 177 bus_size_t bussize; 178 179 psc->psc_pa = pa; 180 181 memh_valid = !pci_mapreg_map(pa, WI_PCI_CBMA, 182 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 0, 183 &memt, &memh, &busbase, &bussize); 184 185 if(memh_valid){ 186 sc->sc_iot = memt; 187 sc->sc_ioh = memh; 188 } 189 else { 190 printf(": unable to map device registers\n"); 191 return; 192 } 193 194 wpp = wi_pci_lookup(pa); 195 if (wpp == NULL) { 196 printf("\n"); 197 panic("wi_pci_attach: impossible"); 198 } 199 200 printf(": %s Wireless Lan\n", wpp->wpp_name); 201 202 sc->sc_pci = 1; 203 sc->sc_enabled = 1; 204 sc->sc_enable = wi_pci_enable; 205 sc->sc_disable = wi_pci_disable; 206 207 /* Enable the card. */ 208 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 209 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 210 PCI_COMMAND_MASTER_ENABLE); 211 212 213 /* Map and establish the interrupt. */ 214 if (pci_intr_map(pa, &ih)) { 215 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 216 return; 217 } 218 intrstr = pci_intr_string(pc, ih); 219 220 psc->psc_ih = ih; 221 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 222 if (sc->sc_ih == NULL) { 223 printf("%s: couldn't establish interrupt", 224 sc->sc_dev.dv_xname); 225 if (intrstr != NULL) 226 printf(" at %s", intrstr); 227 printf("\n"); 228 return; 229 } 230 231 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 232 233 /* reset HFA3842 MAC core */ 234 wi_pci_reset(sc); 235 236 sc->sc_ifp = &sc->sc_ethercom.ec_if; 237 if (wi_attach(sc) != 0) { 238 printf("%s: failed to attach controller\n", 239 sc->sc_dev.dv_xname); 240 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 241 return; 242 } 243 244 /* Add a suspend hook to restore PCI config state */ 245 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 246 if (psc->sc_powerhook == NULL) 247 printf ("%s: WARNING: unable to establish pci power hook\n", 248 sc->sc_dev.dv_xname); 249 } 250 251 static void 252 wi_pci_powerhook(why, arg) 253 int why; 254 void *arg; 255 { 256 struct wi_pci_softc *psc = arg; 257 struct wi_softc *sc = &psc->psc_wi; 258 259 wi_power(sc, why); 260 } 261