if_wi_pci.c revision 1.11
1 /* $NetBSD: if_wi_pci.c,v 1.11 2002/09/30 20:37:43 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 __KERNEL_RCSID(0, "$NetBSD: if_wi_pci.c,v 1.11 2002/09/30 20:37:43 thorpej Exp $"); 47 48 #include <sys/param.h> 49 #include <sys/systm.h> 50 #include <sys/mbuf.h> 51 #include <sys/syslog.h> 52 #include <sys/socket.h> 53 #include <sys/device.h> 54 #include <sys/callout.h> 55 56 #include <net/if.h> 57 #include <net/if_ether.h> 58 #include <net/if_media.h> 59 #include <net/if_ieee80211.h> 60 61 #include <machine/bus.h> 62 #include <machine/intr.h> 63 64 #include <dev/pci/pcireg.h> 65 #include <dev/pci/pcivar.h> 66 #include <dev/pci/pcidevs.h> 67 68 #include <dev/ic/wi_ieee.h> 69 #include <dev/ic/wireg.h> 70 #include <dev/ic/wivar.h> 71 72 #define WI_PCI_PLX_LOMEM 0x10 /* PLX chip membase */ 73 #define WI_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 74 #define WI_PCI_LOMEM 0x18 /* ISA membase */ 75 #define WI_PCI_LOIO 0x1C /* ISA iobase */ 76 77 #define WI_PLX_COR_OFFSET 0x3E0 78 #define WI_PLX_COR_VALUE 0x41 79 80 struct wi_pci_softc { 81 struct wi_softc psc_wi; /* real "wi" softc */ 82 83 /* PCI-specific goo */ 84 pci_intr_handle_t psc_ih; 85 struct pci_attach_args *psc_pa; 86 87 void *sc_powerhook; /* power hook descriptor */ 88 }; 89 90 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 91 static void wi_pci_attach __P((struct device *, struct device *, void *)); 92 static int wi_pci_enable __P((struct wi_softc *)); 93 static void wi_pci_disable __P((struct wi_softc *)); 94 static void wi_pci_reset __P((struct wi_softc *)); 95 static void wi_pci_powerhook __P((int, void *)); 96 97 static const struct wi_pci_product 98 *wi_pci_lookup __P((struct pci_attach_args *)); 99 100 CFATTACH_DECL(wi_pci, sizeof(struct wi_pci_softc), 101 wi_pci_match, wi_pci_attach, NULL, NULL) 102 103 const struct wi_pci_product { 104 pci_vendor_id_t wpp_vendor; /* vendor ID */ 105 pci_product_id_t wpp_product; /* product ID */ 106 const char *wpp_name; /* product name */ 107 int wpp_plx; /* uses PLX chip */ 108 } wi_pci_products[] = { 109 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P, 110 NULL, 1 }, 111 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02, 112 NULL, 1 }, 113 { PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P, 114 NULL, 1 }, 115 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A, 116 NULL, 1 }, 117 { PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301, 118 NULL, 1 }, 119 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 120 "Intersil Prism2.5", 0 }, 121 { 0, 0, 122 NULL, 0}, 123 }; 124 125 static int 126 wi_pci_enable(sc) 127 struct wi_softc *sc; 128 { 129 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 130 131 /* establish the interrupt. */ 132 sc->sc_ih = pci_intr_establish(psc->psc_pa->pa_pc, 133 psc->psc_ih, IPL_NET, wi_intr, sc); 134 if (sc->sc_ih == NULL) { 135 printf("%s: couldn't establish interrupt\n", 136 sc->sc_dev.dv_xname); 137 return (EIO); 138 } 139 140 /* reset HFA3842 MAC core */ 141 wi_pci_reset(sc); 142 143 return (0); 144 } 145 146 static void 147 wi_pci_disable(sc) 148 struct wi_softc *sc; 149 { 150 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 151 152 pci_intr_disestablish(psc->psc_pa->pa_pc, sc->sc_ih); 153 } 154 155 static void 156 wi_pci_reset(sc) 157 struct wi_softc *sc; 158 { 159 int i, secs, usecs; 160 161 CSR_WRITE_2(sc, WI_PCI_COR, WI_COR_SOFT_RESET); 162 DELAY(250*1000); /* 1/4 second */ 163 164 CSR_WRITE_2(sc, WI_PCI_COR, WI_COR_CLEAR); 165 DELAY(500*1000); /* 1/2 second */ 166 167 /* wait 2 seconds for firmware to complete initialization. */ 168 169 for (i = 200000; i--; DELAY(10)) 170 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 171 break; 172 173 if (i < 0) { 174 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 175 } else if (sc->sc_if.if_flags & IFF_DEBUG) { 176 usecs = (200000 - i) * 10; 177 secs = usecs / 1000000; 178 usecs %= 1000000; 179 180 printf("%s: PCI reset in %d.%06d seconds\n", 181 sc->sc_dev.dv_xname, secs, usecs); 182 } 183 184 return; 185 } 186 187 static const struct wi_pci_product * 188 wi_pci_lookup(pa) 189 struct pci_attach_args *pa; 190 { 191 const struct wi_pci_product *wpp; 192 193 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 194 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 195 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 196 return (wpp); 197 } 198 return (NULL); 199 } 200 201 static int 202 wi_pci_match(parent, match, aux) 203 struct device *parent; 204 struct cfdata *match; 205 void *aux; 206 { 207 struct pci_attach_args *pa = aux; 208 209 if (wi_pci_lookup(pa) != NULL) 210 return (1); 211 return (0); 212 } 213 214 static void 215 wi_pci_attach(parent, self, aux) 216 struct device *parent, *self; 217 void *aux; 218 { 219 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 220 struct wi_softc *sc = &psc->psc_wi; 221 struct pci_attach_args *pa = aux; 222 pci_chipset_tag_t pc = pa->pa_pc; 223 const char *intrstr; 224 const struct wi_pci_product *wpp; 225 pci_intr_handle_t ih; 226 bus_space_tag_t memt, iot; 227 bus_space_handle_t memh, ioh; 228 229 psc->psc_pa = pa; 230 231 wpp = wi_pci_lookup(pa); 232 #ifdef DIAGNOSTIC 233 if (wpp == NULL) { 234 printf("\n"); 235 panic("wi_pci_attach: impossible"); 236 } 237 #endif 238 239 if (wpp->wpp_plx) { 240 /* Map memory and I/O registers. */ 241 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 242 &memt, &memh, NULL, NULL) != 0) { 243 printf(": can't map mem space\n"); 244 return; 245 } 246 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 247 &iot, &ioh, NULL, NULL) != 0) { 248 printf(": can't map I/O space\n"); 249 return; 250 } 251 } else { 252 if (pci_mapreg_map(pa, WI_PCI_CBMA, 253 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 254 0, &iot, &ioh, NULL, NULL) != 0) { 255 printf(": can't map mem space\n"); 256 return; 257 } 258 259 memt = iot; 260 memh = ioh; 261 sc->sc_pci = 1; 262 } 263 264 if (wpp->wpp_name != NULL) { 265 printf(": %s Wireless Lan\n", wpp->wpp_name); 266 } else { 267 char devinfo[256]; 268 269 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 270 printf(": %s (rev. 0x%02x)\n", devinfo, 271 PCI_REVISION(pa->pa_class)); 272 } 273 274 sc->sc_enabled = 1; 275 sc->sc_enable = wi_pci_enable; 276 sc->sc_disable = wi_pci_disable; 277 278 /* Enable the card. */ 279 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 280 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 281 PCI_COMMAND_MASTER_ENABLE); 282 283 sc->sc_iot = iot; 284 sc->sc_ioh = ioh; 285 /* Make sure interrupts are disabled. */ 286 CSR_WRITE_2(sc, WI_INT_EN, 0); 287 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 288 289 /* Map and establish the interrupt. */ 290 if (pci_intr_map(pa, &ih)) { 291 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 292 return; 293 } 294 intrstr = pci_intr_string(pc, ih); 295 296 psc->psc_ih = ih; 297 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 298 if (sc->sc_ih == NULL) { 299 printf("%s: couldn't establish interrupt", 300 sc->sc_dev.dv_xname); 301 if (intrstr != NULL) 302 printf(" at %s", intrstr); 303 printf("\n"); 304 return; 305 } 306 307 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 308 309 if (wpp->wpp_plx) { 310 /* 311 * Setup the PLX chip for level interrupts and config index 1 312 * XXX - should really reset the PLX chip too. 313 */ 314 bus_space_write_1(memt, memh, 315 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 316 } else { 317 /* reset HFA3842 MAC core */ 318 wi_pci_reset(sc); 319 } 320 321 printf("%s:", sc->sc_dev.dv_xname); 322 if (wi_attach(sc) != 0) { 323 printf("%s: failed to attach controller\n", 324 sc->sc_dev.dv_xname); 325 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 326 return; 327 } 328 329 /* Add a suspend hook to restore PCI config state */ 330 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 331 if (psc->sc_powerhook == NULL) 332 printf ("%s: WARNING: unable to establish pci power hook\n", 333 sc->sc_dev.dv_xname); 334 } 335 336 static void 337 wi_pci_powerhook(why, arg) 338 int why; 339 void *arg; 340 { 341 struct wi_pci_softc *psc = arg; 342 struct wi_softc *sc = &psc->psc_wi; 343 344 wi_power(sc, why); 345 } 346
Indexes created Sun Sep 21 20:09:37 GMT 2025