if_wi_pci.c revision 1.22
1 /* $NetBSD: if_wi_pci.c,v 1.22 2003/03/29 20:49:04 jdc 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 1.22 2003/03/29 20:49:04 jdc 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_CBMA 0x10 /* Configuration Base Memory Address */ 73 #define WI_PCI_PLX_LOMEM 0x10 /* PLX chip membase */ 74 #define WI_PCI_PLX_LOIO 0x14 /* PLX chip iobase */ 75 #define WI_PCI_LOMEM 0x18 /* ISA membase */ 76 #define WI_PCI_LOIO 0x1C /* ISA iobase */ 77 78 #define WI_PLX_COR_OFFSET 0x3E0 79 #define WI_PLX_COR_VALUE 0x41 80 81 struct wi_pci_softc { 82 struct wi_softc psc_wi; /* real "wi" softc */ 83 84 /* PCI-specific goo */ 85 pci_intr_handle_t psc_ih; 86 struct pci_attach_args *psc_pa; 87 88 void *sc_powerhook; /* power hook descriptor */ 89 }; 90 91 static int wi_pci_match __P((struct device *, struct cfdata *, void *)); 92 static void wi_pci_attach __P((struct device *, struct device *, void *)); 93 static int wi_pci_enable __P((struct wi_softc *)); 94 static void wi_pci_disable __P((struct wi_softc *)); 95 static void wi_pci_reset __P((struct wi_softc *)); 96 static void wi_pci_powerhook __P((int, void *)); 97 98 static const struct wi_pci_product 99 *wi_pci_lookup __P((struct pci_attach_args *)); 100 101 CFATTACH_DECL(wi_pci, sizeof(struct wi_pci_softc), 102 wi_pci_match, wi_pci_attach, NULL, NULL); 103 104 const struct wi_pci_product { 105 pci_vendor_id_t wpp_vendor; /* vendor ID */ 106 pci_product_id_t wpp_product; /* product ID */ 107 const char *wpp_name; /* product name */ 108 int wpp_plx; /* uses PLX chip */ 109 } wi_pci_products[] = { 110 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P, 111 NULL, 1 }, 112 { PCI_VENDOR_GLOBALSUN, PCI_PRODUCT_GLOBALSUN_GL24110P02, 113 NULL, 1 }, 114 { PCI_VENDOR_EUMITCOM, PCI_PRODUCT_EUMITCOM_WL11000P, 115 NULL, 1 }, 116 { PCI_VENDOR_3COM, PCI_PRODUCT_3COM_3CRWE777A, 117 NULL, 1 }, 118 { PCI_VENDOR_NETGEAR, PCI_PRODUCT_NETGEAR_MA301, 119 NULL, 1 }, 120 { PCI_VENDOR_INTERSIL, PCI_PRODUCT_INTERSIL_MINI_PCI_WLAN, 121 "Intersil Prism2.5", 0 }, 122 { PCI_VENDOR_NDC, PCI_PRODUCT_NDC_NCP130, 123 NULL, 1 }, 124 { PCI_VENDOR_USR2, PCI_PRODUCT_USR2_2415, 125 NULL, 1 }, 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 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 167 WI_PCI_COR, WI_COR_SOFT_RESET); 168 DELAY(250*1000); /* 1/4 second */ 169 170 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 171 WI_PCI_COR, WI_COR_CLEAR); 172 DELAY(500*1000); /* 1/2 second */ 173 174 /* wait 2 seconds for firmware to complete initialization. */ 175 176 for (i = 200000; i--; DELAY(10)) 177 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 178 break; 179 180 if (i < 0) { 181 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 182 } else if (sc->sc_if.if_flags & IFF_DEBUG) { 183 usecs = (200000 - i) * 10; 184 secs = usecs / 1000000; 185 usecs %= 1000000; 186 187 printf("%s: PCI reset in %d.%06d seconds\n", 188 sc->sc_dev.dv_xname, secs, usecs); 189 } 190 191 return; 192 } 193 194 static const struct wi_pci_product * 195 wi_pci_lookup(pa) 196 struct pci_attach_args *pa; 197 { 198 const struct wi_pci_product *wpp; 199 200 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 201 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 202 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 203 return (wpp); 204 } 205 return (NULL); 206 } 207 208 static int 209 wi_pci_match(parent, match, aux) 210 struct device *parent; 211 struct cfdata *match; 212 void *aux; 213 { 214 struct pci_attach_args *pa = aux; 215 216 if (wi_pci_lookup(pa) != NULL) 217 return (1); 218 return (0); 219 } 220 221 static void 222 wi_pci_attach(parent, self, aux) 223 struct device *parent, *self; 224 void *aux; 225 { 226 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 227 struct wi_softc *sc = &psc->psc_wi; 228 struct pci_attach_args *pa = aux; 229 pci_chipset_tag_t pc = pa->pa_pc; 230 const char *intrstr; 231 const struct wi_pci_product *wpp; 232 pci_intr_handle_t ih; 233 bus_space_tag_t memt, iot, plxt; 234 bus_space_handle_t memh, ioh, plxh; 235 236 psc->psc_pa = pa; 237 238 wpp = wi_pci_lookup(pa); 239 #ifdef DIAGNOSTIC 240 if (wpp == NULL) { 241 printf("\n"); 242 panic("wi_pci_attach: impossible"); 243 } 244 #endif 245 246 if (wpp->wpp_plx) { 247 /* Map memory and I/O registers. */ 248 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 249 &memt, &memh, NULL, NULL) != 0) { 250 printf(": can't map mem space\n"); 251 return; 252 } 253 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 254 &iot, &ioh, NULL, NULL) != 0) { 255 printf(": can't map I/O space\n"); 256 return; 257 } 258 /* Map PLX. */ 259 if (pci_mapreg_map(pa, WI_PCI_PLX_LOIO, PCI_MAPREG_TYPE_IO, 0, 260 &plxt, &plxh, NULL, NULL) != 0) { 261 printf(": can't map PLX\n"); 262 return; 263 } 264 } else { 265 if (pci_mapreg_map(pa, WI_PCI_CBMA, 266 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 267 0, &iot, &ioh, NULL, NULL) != 0) { 268 printf(": can't map mem space\n"); 269 return; 270 } 271 272 memt = iot; 273 memh = ioh; 274 sc->sc_pci = 1; 275 } 276 277 if (wpp->wpp_name != NULL) { 278 printf(": %s Wireless Lan\n", wpp->wpp_name); 279 } else { 280 char devinfo[256]; 281 282 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 283 printf(": %s (rev. 0x%02x)\n", devinfo, 284 PCI_REVISION(pa->pa_class)); 285 } 286 287 sc->sc_enabled = 1; 288 sc->sc_enable = wi_pci_enable; 289 sc->sc_disable = wi_pci_disable; 290 291 sc->sc_iot = iot; 292 sc->sc_ioh = ioh; 293 /* Make sure interrupts are disabled. */ 294 CSR_WRITE_2(sc, WI_INT_EN, 0); 295 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 296 297 if (wpp->wpp_plx) { 298 uint32_t command; 299 #define WI_LOCAL_INTCSR 0x4c 300 #define WI_LOCAL_INTEN 0x40 /* poke this into INTCSR */ 301 302 command = bus_space_read_4(plxt, plxh, WI_LOCAL_INTCSR); 303 command |= WI_LOCAL_INTEN; 304 bus_space_write_4(plxt, plxh, WI_LOCAL_INTCSR, command); 305 } 306 307 /* Map and establish the interrupt. */ 308 if (pci_intr_map(pa, &ih)) { 309 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 310 return; 311 } 312 intrstr = pci_intr_string(pc, ih); 313 314 psc->psc_ih = ih; 315 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 316 if (sc->sc_ih == NULL) { 317 printf("%s: couldn't establish interrupt", 318 sc->sc_dev.dv_xname); 319 if (intrstr != NULL) 320 printf(" at %s", intrstr); 321 printf("\n"); 322 return; 323 } 324 325 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 326 327 if (wpp->wpp_plx) { 328 /* 329 * Setup the PLX chip for level interrupts and config index 1 330 * XXX - should really reset the PLX chip too. 331 */ 332 bus_space_write_1(memt, memh, 333 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 334 } else { 335 /* reset HFA3842 MAC core */ 336 wi_pci_reset(sc); 337 } 338 339 printf("%s:", sc->sc_dev.dv_xname); 340 if (wi_attach(sc) != 0) { 341 printf("%s: failed to attach controller\n", 342 sc->sc_dev.dv_xname); 343 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 344 return; 345 } 346 347 sc->sc_reset = wi_pci_reset; 348 349 /* Add a suspend hook to restore PCI config state */ 350 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 351 if (psc->sc_powerhook == NULL) 352 printf ("%s: WARNING: unable to establish pci power hook\n", 353 sc->sc_dev.dv_xname); 354 } 355 356 static void 357 wi_pci_powerhook(why, arg) 358 int why; 359 void *arg; 360 { 361 struct wi_pci_softc *psc = arg; 362 struct wi_softc *sc = &psc->psc_wi; 363 364 wi_power(sc, why); 365 } 366
Indexes created Sun Sep 21 18:09:52 GMT 2025