if_wi_pci.c revision 1.27
1 /* $NetBSD: if_wi_pci.c,v 1.27 2003/10/13 08:07:22 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 1.27 2003/10/13 08:07:22 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 63 #include <machine/bus.h> 64 #include <machine/intr.h> 65 66 #include <dev/pci/pcireg.h> 67 #include <dev/pci/pcivar.h> 68 #include <dev/pci/pcidevs.h> 69 70 #include <dev/ic/wi_ieee.h> 71 #include <dev/ic/wireg.h> 72 #include <dev/ic/wivar.h> 73 74 #define WI_PCI_CBMA 0x10 /* Configuration Base Memory Address */ 75 #define WI_PCI_PLX_LOMEM 0x10 /* PLX chip membase */ 76 #define WI_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 77 #define WI_PCI_LOMEM 0x18 /* ISA membase */ 78 #define WI_PCI_LOIO 0x1C /* ISA iobase */ 79 80 #define CHIP_PLX_OTHER 0x01 81 #define CHIP_PLX_9052 0x02 82 83 #define WI_PLX_COR_OFFSET 0x3E0 84 #define WI_PLX_COR_VALUE 0x41 85 86 struct wi_pci_softc { 87 struct wi_softc psc_wi; /* real "wi" softc */ 88 89 /* PCI-specific goo */ 90 pci_intr_handle_t psc_ih; 91 pci_chipset_tag_t psc_pc; 92 93 void *sc_powerhook; /* power hook descriptor */ 94 }; 95 96 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 97 static void wi_pci_attach __P((struct device *, struct device *, void *)); 98 static int wi_pci_enable __P((struct wi_softc *)); 99 static void wi_pci_disable __P((struct wi_softc *)); 100 static void wi_pci_reset __P((struct wi_softc *)); 101 static void wi_pci_powerhook __P((int, void *)); 102 103 static const struct wi_pci_product 104 *wi_pci_lookup __P((struct pci_attach_args *)); 105 106 CFATTACH_DECL(wi_pci, sizeof(struct wi_pci_softc), 107 wi_pci_match, wi_pci_attach, NULL, NULL); 108 109 const struct wi_pci_product { 110 pci_vendor_id_t wpp_vendor; /* vendor ID */ 111 pci_product_id_t wpp_product; /* product ID */ 112 const char *wpp_name; /* product name */ 113 int wpp_plx; /* uses PLX chip */ 114 } wi_pci_products[] = { 115 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P, 116 NULL, CHIP_PLX_OTHER }, 117 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02, 118 NULL, CHIP_PLX_OTHER }, 119 { PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P, 120 NULL, CHIP_PLX_OTHER }, 121 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A, 122 NULL, CHIP_PLX_OTHER }, 123 { PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301, 124 NULL, CHIP_PLX_OTHER }, 125 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 126 "Intersil Prism2.5", 0 }, 127 { PCI_VENDOR_NDC, PCI_PRODUCT_NDC_NCP130, 128 NULL, CHIP_PLX_9052 }, 129 { PCI_VENDOR_USR2, PCI_PRODUCT_USR2_2415, 130 NULL, CHIP_PLX_OTHER }, 131 { 0, 0, 132 NULL, 0}, 133 }; 134 135 static int 136 wi_pci_enable(sc) 137 struct wi_softc *sc; 138 { 139 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 140 141 /* establish the interrupt. */ 142 sc->sc_ih = pci_intr_establish(psc->psc_pc, 143 psc->psc_ih, IPL_NET, wi_intr, sc); 144 if (sc->sc_ih == NULL) { 145 printf("%s: couldn't establish interrupt\n", 146 sc->sc_dev.dv_xname); 147 return (EIO); 148 } 149 150 /* reset HFA3842 MAC core */ 151 wi_pci_reset(sc); 152 153 return (0); 154 } 155 156 static void 157 wi_pci_disable(sc) 158 struct wi_softc *sc; 159 { 160 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 161 162 pci_intr_disestablish(psc->psc_pc, sc->sc_ih); 163 } 164 165 static void 166 wi_pci_reset(sc) 167 struct wi_softc *sc; 168 { 169 int i, secs, usecs; 170 171 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 172 WI_PCI_COR, WI_COR_SOFT_RESET); 173 DELAY(250*1000); /* 1/4 second */ 174 175 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 176 WI_PCI_COR, WI_COR_CLEAR); 177 DELAY(500*1000); /* 1/2 second */ 178 179 /* wait 2 seconds for firmware to complete initialization. */ 180 181 for (i = 200000; i--; DELAY(10)) 182 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 183 break; 184 185 if (i < 0) { 186 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 187 } else if (sc->sc_if.if_flags & IFF_DEBUG) { 188 usecs = (200000 - i) * 10; 189 secs = usecs / 1000000; 190 usecs %= 1000000; 191 192 printf("%s: PCI reset in %d.%06d seconds\n", 193 sc->sc_dev.dv_xname, secs, usecs); 194 } 195 196 return; 197 } 198 199 static const struct wi_pci_product * 200 wi_pci_lookup(pa) 201 struct pci_attach_args *pa; 202 { 203 const struct wi_pci_product *wpp; 204 205 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 206 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 207 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 208 return (wpp); 209 } 210 return (NULL); 211 } 212 213 static int 214 wi_pci_match(parent, match, aux) 215 struct device *parent; 216 struct cfdata *match; 217 void *aux; 218 { 219 struct pci_attach_args *pa = aux; 220 221 if (wi_pci_lookup(pa) != NULL) 222 return (1); 223 return (0); 224 } 225 226 static void 227 wi_pci_attach(parent, self, aux) 228 struct device *parent, *self; 229 void *aux; 230 { 231 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 232 struct wi_softc *sc = &psc->psc_wi; 233 struct pci_attach_args *pa = aux; 234 pci_chipset_tag_t pc = pa->pa_pc; 235 const char *intrstr; 236 const struct wi_pci_product *wpp; 237 pci_intr_handle_t ih; 238 bus_space_tag_t memt, iot, plxt; 239 bus_space_handle_t memh, ioh, plxh; 240 241 psc->psc_pc = pc; 242 243 wpp = wi_pci_lookup(pa); 244 #ifdef DIAGNOSTIC 245 if (wpp == NULL) { 246 printf("\n"); 247 panic("wi_pci_attach: impossible"); 248 } 249 #endif 250 251 if (wpp->wpp_plx) { 252 /* Map memory and I/O registers. */ 253 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 254 &memt, &memh, NULL, NULL) != 0) { 255 printf(": can't map mem space\n"); 256 return; 257 } 258 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 259 &iot, &ioh, NULL, NULL) != 0) { 260 printf(": can't map I/O space\n"); 261 return; 262 } 263 264 if (wpp->wpp_plx == CHIP_PLX_OTHER) { 265 /* The PLX 9052 doesn't have IO at 0x14. Perhaps 266 other chips have, so we'll make this conditional. */ 267 if (pci_mapreg_map(pa, WI_PCI_PLX_LOIO, 268 PCI_MAPREG_TYPE_IO, 0, &plxt, 269 &plxh, NULL, NULL) != 0) { 270 printf(": can't map PLX\n"); 271 return; 272 } 273 } 274 } else { 275 if (pci_mapreg_map(pa, WI_PCI_CBMA, 276 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 277 0, &iot, &ioh, NULL, NULL) != 0) { 278 printf(": can't map mem space\n"); 279 return; 280 } 281 282 memt = iot; 283 memh = ioh; 284 sc->sc_pci = 1; 285 } 286 287 if (wpp->wpp_name != NULL) { 288 printf(": %s Wireless Lan\n", wpp->wpp_name); 289 } else { 290 char devinfo[256]; 291 292 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 293 printf(": %s (rev. 0x%02x)\n", devinfo, 294 PCI_REVISION(pa->pa_class)); 295 } 296 297 sc->sc_enabled = 1; 298 sc->sc_enable = wi_pci_enable; 299 sc->sc_disable = wi_pci_disable; 300 301 sc->sc_iot = iot; 302 sc->sc_ioh = ioh; 303 /* Make sure interrupts are disabled. */ 304 CSR_WRITE_2(sc, WI_INT_EN, 0); 305 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 306 307 if (wpp->wpp_plx == CHIP_PLX_OTHER) { 308 uint32_t command; 309 #define WI_LOCAL_INTCSR 0x4c 310 #define WI_LOCAL_INTEN 0x40 /* poke this into INTCSR */ 311 312 command = bus_space_read_4(plxt, plxh, WI_LOCAL_INTCSR); 313 command |= WI_LOCAL_INTEN; 314 bus_space_write_4(plxt, plxh, WI_LOCAL_INTCSR, command); 315 } 316 317 /* Map and establish the interrupt. */ 318 if (pci_intr_map(pa, &ih)) { 319 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 320 return; 321 } 322 intrstr = pci_intr_string(pc, ih); 323 324 psc->psc_ih = ih; 325 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 326 if (sc->sc_ih == NULL) { 327 printf("%s: couldn't establish interrupt", 328 sc->sc_dev.dv_xname); 329 if (intrstr != NULL) 330 printf(" at %s", intrstr); 331 printf("\n"); 332 return; 333 } 334 335 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 336 337 if (wpp->wpp_plx) { 338 /* 339 * Setup the PLX chip for level interrupts and config index 1 340 * XXX - should really reset the PLX chip too. 341 */ 342 bus_space_write_1(memt, memh, 343 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 344 } else { 345 /* reset HFA3842 MAC core */ 346 wi_pci_reset(sc); 347 } 348 349 printf("%s:", sc->sc_dev.dv_xname); 350 if (wi_attach(sc) != 0) { 351 printf("%s: failed to attach controller\n", 352 sc->sc_dev.dv_xname); 353 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 354 return; 355 } 356 357 sc->sc_reset = wi_pci_reset; 358 359 /* Add a suspend hook to restore PCI config state */ 360 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 361 if (psc->sc_powerhook == NULL) 362 printf ("%s: WARNING: unable to establish pci power hook\n", 363 sc->sc_dev.dv_xname); 364 } 365 366 static void 367 wi_pci_powerhook(why, arg) 368 int why; 369 void *arg; 370 { 371 struct wi_pci_softc *psc = arg; 372 struct wi_softc *sc = &psc->psc_wi; 373 374 wi_power(sc, why); 375 } 376
Indexes created Mon Sep 22 13:09:51 GMT 2025