if_wi_pci.c revision 1.1.2.6
1 /* $NetBSD: if_wi_pci.c,v 1.1.2.6 2002/09/23 15:42:20 thorpej 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 (at) sfc.wide.ad.jp> 9 * and Ichiro FUKUHARA (ichiro (at) 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/cdefs.h> 46 <<<<<<< if_wi_pci.c 47 __KERNEL_RCSID(0, "$NetBSD: if_wi_pci.c,v 1.1.2.6 2002/09/23 15:42:20 thorpej Exp $"); 48 ======= 49 __KERNEL_RCSID(0, "$NetBSD: if_wi_pci.c,v 1.1.2.6 2002/09/23 15:42:20 thorpej Exp $"); 50 >>>>>>> 1.8 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/mbuf.h> 55 #include <sys/syslog.h> 56 #include <sys/socket.h> 57 #include <sys/device.h> 58 #include <sys/callout.h> 59 60 #include <net/if.h> 61 #include <net/if_ether.h> 62 #include <net/if_media.h> 63 #include <net/if_ieee80211.h> 64 65 #include <machine/bus.h> 66 #include <machine/intr.h> 67 68 #include <dev/pci/pcireg.h> 69 #include <dev/pci/pcivar.h> 70 #include <dev/pci/pcidevs.h> 71 72 #include <dev/ic/wi_ieee.h> 73 #include <dev/ic/wireg.h> 74 #include <dev/ic/wivar.h> 75 76 #define WI_PCI_PLX_LOMEM 0x10 /* PLX chip membase */ 77 #define WI_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 78 #define WI_PCI_LOMEM 0x18 /* ISA membase */ 79 #define WI_PCI_LOIO 0x1C /* ISA iobase */ 80 81 #define WI_PLX_COR_OFFSET 0x3E0 82 #define WI_PLX_COR_VALUE 0x41 83 84 struct wi_pci_softc { 85 struct wi_softc psc_wi; /* real "wi" softc */ 86 87 /* PCI-specific goo */ 88 pci_intr_handle_t psc_ih; 89 struct pci_attach_args *psc_pa; 90 91 void *sc_powerhook; /* power hook descriptor */ 92 }; 93 94 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 95 static void wi_pci_attach __P((struct device *, struct device *, void *)); 96 static int wi_pci_enable __P((struct wi_softc *)); 97 static void wi_pci_disable __P((struct wi_softc *)); 98 static void wi_pci_reset __P((struct wi_softc *)); 99 static void wi_pci_powerhook __P((int, void *)); 100 101 static const struct wi_pci_product 102 *wi_pci_lookup __P((struct pci_attach_args *)); 103 104 struct cfattach wi_pci_ca = { 105 sizeof(struct wi_pci_softc), wi_pci_match, wi_pci_attach 106 }; 107 108 const struct wi_pci_product { 109 pci_vendor_id_t wpp_vendor; /* vendor ID */ 110 pci_product_id_t wpp_product; /* product ID */ 111 const char *wpp_name; /* product name */ 112 int wpp_plx; /* uses PLX chip */ 113 } wi_pci_products[] = { 114 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P, 115 NULL, 1 }, 116 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02, 117 NULL, 1 }, 118 { PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P, 119 NULL, 1 }, 120 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A, 121 NULL, 1 }, 122 { PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301, 123 NULL, 1 }, 124 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 125 "Intersil Prism2.5", 0 }, 126 { 0, 0, 127 NULL, 0}, 128 }; 129 130 static int 131 wi_pci_enable(sc) 132 struct wi_softc *sc; 133 { 134 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 135 136 /* establish the interrupt. */ 137 sc->sc_ih = pci_intr_establish(psc->psc_pa->pa_pc, 138 psc->psc_ih, IPL_NET, wi_intr, sc); 139 if (sc->sc_ih == NULL) { 140 printf("%s: couldn't establish interrupt\n", 141 sc->sc_dev.dv_xname); 142 return (EIO); 143 } 144 145 /* reset HFA3842 MAC core */ 146 wi_pci_reset(sc); 147 148 return (0); 149 } 150 151 static void 152 wi_pci_disable(sc) 153 struct wi_softc *sc; 154 { 155 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 156 157 pci_intr_disestablish(psc->psc_pa->pa_pc, sc->sc_ih); 158 } 159 160 static void 161 wi_pci_reset(sc) 162 struct wi_softc *sc; 163 { 164 int i, secs, usecs; 165 166 CSR_WRITE_2(sc, WI_PCI_COR_OFFSET, WI_COR_SOFT_RESET); 167 DELAY(250*1000); /* 1/4 second */ 168 169 CSR_WRITE_2(sc, WI_PCI_COR_OFFSET, WI_COR_CLEAR); 170 DELAY(500*1000); /* 1/2 second */ 171 172 /* wait 2 seconds for firmware to complete initialization. */ 173 174 for (i = 200000; i--; DELAY(10)) 175 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 176 break; 177 178 if (i < 0) { 179 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 180 } else if (sc->sc_ethercom.ec_if.if_flags & IFF_DEBUG) { 181 usecs = (200000 - i) * 10; 182 secs = usecs / 1000000; 183 usecs %= 1000000; 184 185 printf("%s: PCI reset in %d.%06d seconds\n", 186 sc->sc_dev.dv_xname, secs, usecs); 187 } 188 189 return; 190 } 191 192 static const struct wi_pci_product * 193 wi_pci_lookup(pa) 194 struct pci_attach_args *pa; 195 { 196 const struct wi_pci_product *wpp; 197 198 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 199 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 200 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 201 return (wpp); 202 } 203 return (NULL); 204 } 205 206 static int 207 wi_pci_match(parent, match, aux) 208 struct device *parent; 209 struct cfdata *match; 210 void *aux; 211 { 212 struct pci_attach_args *pa = aux; 213 214 if (wi_pci_lookup(pa) != NULL) 215 return (1); 216 return (0); 217 } 218 219 static void 220 wi_pci_attach(parent, self, aux) 221 struct device *parent, *self; 222 void *aux; 223 { 224 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 225 struct wi_softc *sc = &psc->psc_wi; 226 struct pci_attach_args *pa = aux; 227 pci_chipset_tag_t pc = pa->pa_pc; 228 const char *intrstr; 229 const struct wi_pci_product *wpp; 230 pci_intr_handle_t ih; 231 bus_space_tag_t memt, iot; 232 bus_space_handle_t memh, ioh; 233 234 psc->psc_pa = pa; 235 236 wpp = wi_pci_lookup(pa); 237 #ifdef DIAGNOSTIC 238 if (wpp == NULL) { 239 printf("\n"); 240 panic("wi_pci_attach: impossible"); 241 } 242 #endif 243 244 if (wpp->wpp_plx) { 245 /* Map memory and I/O registers. */ 246 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 247 &memt, &memh, NULL, NULL) != 0) { 248 printf(": can't map mem space\n"); 249 return; 250 } 251 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 252 &iot, &ioh, NULL, NULL) != 0) { 253 printf(": can't map I/O space\n"); 254 return; 255 } 256 } else { 257 if (pci_mapreg_map(pa, WI_PCI_CBMA, 258 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 259 0, &iot, &ioh, NULL, NULL) != 0) { 260 printf(": can't map mem space\n"); 261 return; 262 } 263 264 memt = iot; 265 memh = ioh; 266 sc->sc_pci = 1; 267 } 268 269 if (wpp->wpp_name != NULL) { 270 printf(": %s Wireless Lan\n", wpp->wpp_name); 271 } else { 272 char devinfo[256]; 273 274 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 275 printf(": %s (rev. 0x%02x)\n", devinfo, 276 PCI_REVISION(pa->pa_class)); 277 } 278 279 sc->sc_enabled = 1; 280 sc->sc_enable = wi_pci_enable; 281 sc->sc_disable = wi_pci_disable; 282 283 /* Enable the card. */ 284 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 285 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 286 PCI_COMMAND_MASTER_ENABLE); 287 288 sc->sc_iot = iot; 289 sc->sc_ioh = ioh; 290 /* Make sure interrupts are disabled. */ 291 CSR_WRITE_2(sc, WI_INT_EN, 0); 292 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 293 294 /* Map and establish the interrupt. */ 295 if (pci_intr_map(pa, &ih)) { 296 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 297 return; 298 } 299 intrstr = pci_intr_string(pc, ih); 300 301 psc->psc_ih = ih; 302 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 303 if (sc->sc_ih == NULL) { 304 printf("%s: couldn't establish interrupt", 305 sc->sc_dev.dv_xname); 306 if (intrstr != NULL) 307 printf(" at %s", intrstr); 308 printf("\n"); 309 return; 310 } 311 312 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 313 314 if (wpp->wpp_plx) { 315 /* 316 * Setup the PLX chip for level interrupts and config index 1 317 * XXX - should really reset the PLX chip too. 318 */ 319 bus_space_write_1(memt, memh, 320 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 321 } else { 322 /* reset HFA3842 MAC core */ 323 wi_pci_reset(sc); 324 } 325 326 printf("%s:", sc->sc_dev.dv_xname); 327 sc->sc_ifp = &sc->sc_ethercom.ec_if; 328 if (wi_attach(sc) != 0) { 329 printf("%s: failed to attach controller\n", 330 sc->sc_dev.dv_xname); 331 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 332 return; 333 } 334 335 /* Add a suspend hook to restore PCI config state */ 336 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 337 if (psc->sc_powerhook == NULL) 338 printf ("%s: WARNING: unable to establish pci power hook\n", 339 sc->sc_dev.dv_xname); 340 } 341 342 static void 343 wi_pci_powerhook(why, arg) 344 int why; 345 void *arg; 346 { 347 struct wi_pci_softc *psc = arg; 348 struct wi_softc *sc = &psc->psc_wi; 349 350 wi_power(sc, why); 351 } 352
Indexes created Wed Oct 01 18:09:54 GMT 2025