if_wi_pci.c revision 1.28
1 /* $NetBSD: if_wi_pci.c,v 1.28 2003/11/16 09:02:42 dyoung 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 1.28 2003/11/16 09:02:42 dyoung 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 60 #include <net80211/ieee80211_var.h> 61 #include <net80211/ieee80211_compat.h> 62 #include <net80211/ieee80211_radiotap.h> 63 64 #include <machine/bus.h> 65 #include <machine/intr.h> 66 67 #include <dev/pci/pcireg.h> 68 #include <dev/pci/pcivar.h> 69 #include <dev/pci/pcidevs.h> 70 71 #include <dev/ic/wi_ieee.h> 72 #include <dev/ic/wireg.h> 73 #include <dev/ic/wivar.h> 74 75 #define WI_PCI_CBMA 0x10 /* Configuration Base Memory Address */ 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 CHIP_PLX_OTHER 0x01 82 #define CHIP_PLX_9052 0x02 83 84 #define WI_PLX_COR_OFFSET 0x3E0 85 #define WI_PLX_COR_VALUE 0x41 86 87 struct wi_pci_softc { 88 struct wi_softc psc_wi; /* real "wi" softc */ 89 90 /* PCI-specific goo */ 91 pci_intr_handle_t psc_ih; 92 pci_chipset_tag_t psc_pc; 93 94 void *sc_powerhook; /* power hook descriptor */ 95 }; 96 97 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 98 static void wi_pci_attach __P((struct device *, struct device *, void *)); 99 static int wi_pci_enable __P((struct wi_softc *)); 100 static void wi_pci_disable __P((struct wi_softc *)); 101 static void wi_pci_reset __P((struct wi_softc *)); 102 static void wi_pci_powerhook __P((int, void *)); 103 104 static const struct wi_pci_product 105 *wi_pci_lookup __P((struct pci_attach_args *)); 106 107 CFATTACH_DECL(wi_pci, sizeof(struct wi_pci_softc), 108 wi_pci_match, wi_pci_attach, NULL, NULL); 109 110 const struct wi_pci_product { 111 pci_vendor_id_t wpp_vendor; /* vendor ID */ 112 pci_product_id_t wpp_product; /* product ID */ 113 const char *wpp_name; /* product name */ 114 int wpp_plx; /* uses PLX chip */ 115 } wi_pci_products[] = { 116 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P, 117 NULL, CHIP_PLX_OTHER }, 118 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02, 119 NULL, CHIP_PLX_OTHER }, 120 { PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P, 121 NULL, CHIP_PLX_OTHER }, 122 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A, 123 NULL, CHIP_PLX_OTHER }, 124 { PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301, 125 NULL, CHIP_PLX_OTHER }, 126 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 127 "Intersil Prism2.5", 0 }, 128 { PCI_VENDOR_NDC, PCI_PRODUCT_NDC_NCP130, 129 NULL, CHIP_PLX_9052 }, 130 { PCI_VENDOR_USR2, PCI_PRODUCT_USR2_2415, 131 NULL, CHIP_PLX_OTHER }, 132 { 0, 0, 133 NULL, 0}, 134 }; 135 136 static int 137 wi_pci_enable(sc) 138 struct wi_softc *sc; 139 { 140 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 141 142 /* establish the interrupt. */ 143 sc->sc_ih = pci_intr_establish(psc->psc_pc, 144 psc->psc_ih, IPL_NET, wi_intr, sc); 145 if (sc->sc_ih == NULL) { 146 printf("%s: couldn't establish interrupt\n", 147 sc->sc_dev.dv_xname); 148 return (EIO); 149 } 150 151 /* reset HFA3842 MAC core */ 152 wi_pci_reset(sc); 153 154 return (0); 155 } 156 157 static void 158 wi_pci_disable(sc) 159 struct wi_softc *sc; 160 { 161 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 162 163 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 164 } 165 166 static void 167 wi_pci_reset(sc) 168 struct wi_softc *sc; 169 { 170 int i, secs, usecs; 171 172 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 173 WI_PCI_COR, WI_COR_SOFT_RESET); 174 DELAY(250*1000); /* 1/4 second */ 175 176 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 177 WI_PCI_COR, WI_COR_CLEAR); 178 DELAY(500*1000); /* 1/2 second */ 179 180 /* wait 2 seconds for firmware to complete initialization. */ 181 182 for (i = 200000; i--; DELAY(10)) 183 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 184 break; 185 186 if (i < 0) { 187 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 188 } else if (sc->sc_if.if_flags & IFF_DEBUG) { 189 usecs = (200000 - i) * 10; 190 secs = usecs / 1000000; 191 usecs %= 1000000; 192 193 printf("%s: PCI reset in %d.%06d seconds\n", 194 sc->sc_dev.dv_xname, secs, usecs); 195 } 196 197 return; 198 } 199 200 static const struct wi_pci_product * 201 wi_pci_lookup(pa) 202 struct pci_attach_args *pa; 203 { 204 const struct wi_pci_product *wpp; 205 206 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 207 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 208 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 209 return (wpp); 210 } 211 return (NULL); 212 } 213 214 static int 215 wi_pci_match(parent, match, aux) 216 struct device *parent; 217 struct cfdata *match; 218 void *aux; 219 { 220 struct pci_attach_args *pa = aux; 221 222 if (wi_pci_lookup(pa) != NULL) 223 return (1); 224 return (0); 225 } 226 227 static void 228 wi_pci_attach(parent, self, aux) 229 struct device *parent, *self; 230 void *aux; 231 { 232 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 233 struct wi_softc *sc = &psc->psc_wi; 234 struct pci_attach_args *pa = aux; 235 pci_chipset_tag_t pc = pa->pa_pc; 236 const char *intrstr; 237 const struct wi_pci_product *wpp; 238 pci_intr_handle_t ih; 239 bus_space_tag_t memt, iot, plxt; 240 bus_space_handle_t memh, ioh, plxh; 241 242 psc->psc_pc = pc; 243 244 wpp = wi_pci_lookup(pa); 245 #ifdef DIAGNOSTIC 246 if (wpp == NULL) { 247 printf("\n"); 248 panic("wi_pci_attach: impossible"); 249 } 250 #endif 251 252 if (wpp->wpp_plx) { 253 /* Map memory and I/O registers. */ 254 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 255 &memt, &memh, NULL, NULL) != 0) { 256 printf(": can't map mem space\n"); 257 return; 258 } 259 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 260 &iot, &ioh, NULL, NULL) != 0) { 261 printf(": can't map I/O space\n"); 262 return; 263 } 264 265 if (wpp->wpp_plx == CHIP_PLX_OTHER) { 266 /* The PLX 9052 doesn't have IO at 0x14. Perhaps 267 other chips have, so we'll make this conditional. */ 268 if (pci_mapreg_map(pa, WI_PCI_PLX_LOIO, 269 PCI_MAPREG_TYPE_IO, 0, &plxt, 270 &plxh, NULL, NULL) != 0) { 271 printf(": can't map PLX\n"); 272 return; 273 } 274 } 275 } else { 276 if (pci_mapreg_map(pa, WI_PCI_CBMA, 277 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 278 0, &iot, &ioh, NULL, NULL) != 0) { 279 printf(": can't map mem space\n"); 280 return; 281 } 282 283 memt = iot; 284 memh = ioh; 285 sc->sc_pci = 1; 286 } 287 288 if (wpp->wpp_name != NULL) { 289 printf(": %s Wireless Lan\n", wpp->wpp_name); 290 } else { 291 char devinfo[256]; 292 293 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 294 printf(": %s (rev. 0x%02x)\n", devinfo, 295 PCI_REVISION(pa->pa_class)); 296 } 297 298 sc->sc_enabled = 1; 299 sc->sc_enable = wi_pci_enable; 300 sc->sc_disable = wi_pci_disable; 301 302 sc->sc_iot = iot; 303 sc->sc_ioh = ioh; 304 /* Make sure interrupts are disabled. */ 305 CSR_WRITE_2(sc, WI_INT_EN, 0); 306 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 307 308 if (wpp->wpp_plx == CHIP_PLX_OTHER) { 309 uint32_t command; 310 #define WI_LOCAL_INTCSR 0x4c 311 #define WI_LOCAL_INTEN 0x40 /* poke this into INTCSR */ 312 313 command = bus_space_read_4(plxt, plxh, WI_LOCAL_INTCSR); 314 command |= WI_LOCAL_INTEN; 315 bus_space_write_4(plxt, plxh, WI_LOCAL_INTCSR, command); 316 } 317 318 /* Map and establish the interrupt. */ 319 if (pci_intr_map(pa, &ih)) { 320 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 321 return; 322 } 323 intrstr = pci_intr_string(pc, ih); 324 325 psc->psc_ih = ih; 326 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 327 if (sc->sc_ih == NULL) { 328 printf("%s: couldn't establish interrupt", 329 sc->sc_dev.dv_xname); 330 if (intrstr != NULL) 331 printf(" at %s", intrstr); 332 printf("\n"); 333 return; 334 } 335 336 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 337 338 if (wpp->wpp_plx) { 339 /* 340 * Setup the PLX chip for level interrupts and config index 1 341 * XXX - should really reset the PLX chip too. 342 */ 343 bus_space_write_1(memt, memh, 344 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 345 } else { 346 /* reset HFA3842 MAC core */ 347 wi_pci_reset(sc); 348 } 349 350 printf("%s:", sc->sc_dev.dv_xname); 351 if (wi_attach(sc) != 0) { 352 printf("%s: failed to attach controller\n", 353 sc->sc_dev.dv_xname); 354 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 355 return; 356 } 357 358 sc->sc_reset = wi_pci_reset; 359 360 /* Add a suspend hook to restore PCI config state */ 361 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 362 if (psc->sc_powerhook == NULL) 363 printf ("%s: WARNING: unable to establish pci power hook\n", 364 sc->sc_dev.dv_xname); 365 } 366 367 static void 368 wi_pci_powerhook(why, arg) 369 int why; 370 void *arg; 371 { 372 struct wi_pci_softc *psc = arg; 373 struct wi_softc *sc = &psc->psc_wi; 374 375 wi_power(sc, why); 376 } 377
Indexes created Sat Sep 20 22:09:52 GMT 2025