if_wi_pci.c revision 1.14
1 /* $NetBSD: if_wi_pci.c,v 1.14 2002/12/31 06:33:20 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 1.14 2002/12/31 06:33:20 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 #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 { 0, 0, 123 NULL, 0}, 124 }; 125 126 static int 127 wi_pci_enable(sc) 128 struct wi_softc *sc; 129 { 130 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 131 132 /* establish the interrupt. */ 133 sc->sc_ih = pci_intr_establish(psc->psc_pa->pa_pc, 134 psc->psc_ih, IPL_NET, wi_intr, sc); 135 if (sc->sc_ih == NULL) { 136 printf("%s: couldn't establish interrupt\n", 137 sc->sc_dev.dv_xname); 138 return (EIO); 139 } 140 141 /* reset HFA3842 MAC core */ 142 wi_pci_reset(sc); 143 144 return (0); 145 } 146 147 static void 148 wi_pci_disable(sc) 149 struct wi_softc *sc; 150 { 151 struct wi_pci_softc *psc = (struct wi_pci_softc *)sc; 152 153 pci_intr_disestablish(psc->psc_pa->pa_pc, sc->sc_ih); 154 } 155 156 static void 157 wi_pci_reset(sc) 158 struct wi_softc *sc; 159 { 160 int i, secs, usecs; 161 162 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 163 WI_PCI_COR, WI_COR_SOFT_RESET); 164 DELAY(250*1000); /* 1/4 second */ 165 166 bus_space_write_2(sc->sc_iot, sc->sc_ioh, 167 WI_PCI_COR, WI_COR_CLEAR); 168 DELAY(500*1000); /* 1/2 second */ 169 170 /* wait 2 seconds for firmware to complete initialization. */ 171 172 for (i = 200000; i--; DELAY(10)) 173 if (!(CSR_READ_2(sc, WI_COMMAND) & WI_CMD_BUSY)) 174 break; 175 176 if (i < 0) { 177 printf("%s: PCI reset timed out\n", sc->sc_dev.dv_xname); 178 } else if (sc->sc_if.if_flags & IFF_DEBUG) { 179 usecs = (200000 - i) * 10; 180 secs = usecs / 1000000; 181 usecs %= 1000000; 182 183 printf("%s: PCI reset in %d.%06d seconds\n", 184 sc->sc_dev.dv_xname, secs, usecs); 185 } 186 187 return; 188 } 189 190 static const struct wi_pci_product * 191 wi_pci_lookup(pa) 192 struct pci_attach_args *pa; 193 { 194 const struct wi_pci_product *wpp; 195 196 for (wpp = wi_pci_products; wpp->wpp_vendor != 0; wpp++) { 197 if (PCI_VENDOR(pa->pa_id) == wpp->wpp_vendor && 198 PCI_PRODUCT(pa->pa_id) == wpp->wpp_product) 199 return (wpp); 200 } 201 return (NULL); 202 } 203 204 static int 205 wi_pci_match(parent, match, aux) 206 struct device *parent; 207 struct cfdata *match; 208 void *aux; 209 { 210 struct pci_attach_args *pa = aux; 211 212 if (wi_pci_lookup(pa) != NULL) 213 return (1); 214 return (0); 215 } 216 217 static void 218 wi_pci_attach(parent, self, aux) 219 struct device *parent, *self; 220 void *aux; 221 { 222 struct wi_pci_softc *psc = (struct wi_pci_softc *)self; 223 struct wi_softc *sc = &psc->psc_wi; 224 struct pci_attach_args *pa = aux; 225 pci_chipset_tag_t pc = pa->pa_pc; 226 const char *intrstr; 227 const struct wi_pci_product *wpp; 228 pci_intr_handle_t ih; 229 bus_space_tag_t memt, iot; 230 bus_space_handle_t memh, ioh; 231 232 psc->psc_pa = pa; 233 234 wpp = wi_pci_lookup(pa); 235 #ifdef DIAGNOSTIC 236 if (wpp == NULL) { 237 printf("\n"); 238 panic("wi_pci_attach: impossible"); 239 } 240 #endif 241 242 if (wpp->wpp_plx) { 243 /* Map memory and I/O registers. */ 244 if (pci_mapreg_map(pa, WI_PCI_LOMEM, PCI_MAPREG_TYPE_MEM, 0, 245 &memt, &memh, NULL, NULL) != 0) { 246 printf(": can't map mem space\n"); 247 return; 248 } 249 if (pci_mapreg_map(pa, WI_PCI_LOIO, PCI_MAPREG_TYPE_IO, 0, 250 &iot, &ioh, NULL, NULL) != 0) { 251 printf(": can't map I/O space\n"); 252 return; 253 } 254 } else { 255 if (pci_mapreg_map(pa, WI_PCI_CBMA, 256 PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT, 257 0, &iot, &ioh, NULL, NULL) != 0) { 258 printf(": can't map mem space\n"); 259 return; 260 } 261 262 memt = iot; 263 memh = ioh; 264 sc->sc_pci = 1; 265 } 266 267 if (wpp->wpp_name != NULL) { 268 printf(": %s Wireless Lan\n", wpp->wpp_name); 269 } else { 270 char devinfo[256]; 271 272 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo); 273 printf(": %s (rev. 0x%02x)\n", devinfo, 274 PCI_REVISION(pa->pa_class)); 275 } 276 277 sc->sc_enabled = 1; 278 sc->sc_enable = wi_pci_enable; 279 sc->sc_disable = wi_pci_disable; 280 281 /* Enable the card. */ 282 pci_conf_write(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG, 283 pci_conf_read(pc, pa->pa_tag, PCI_COMMAND_STATUS_REG) | 284 PCI_COMMAND_MASTER_ENABLE); 285 286 sc->sc_iot = iot; 287 sc->sc_ioh = ioh; 288 /* Make sure interrupts are disabled. */ 289 CSR_WRITE_2(sc, WI_INT_EN, 0); 290 CSR_WRITE_2(sc, WI_EVENT_ACK, 0xFFFF); 291 292 /* Map and establish the interrupt. */ 293 if (pci_intr_map(pa, &ih)) { 294 printf("%s: couldn't map interrupt\n", sc->sc_dev.dv_xname); 295 return; 296 } 297 intrstr = pci_intr_string(pc, ih); 298 299 psc->psc_ih = ih; 300 sc->sc_ih = pci_intr_establish(pc, ih, IPL_NET, wi_intr, sc); 301 if (sc->sc_ih == NULL) { 302 printf("%s: couldn't establish interrupt", 303 sc->sc_dev.dv_xname); 304 if (intrstr != NULL) 305 printf(" at %s", intrstr); 306 printf("\n"); 307 return; 308 } 309 310 printf("%s: interrupting at %s\n", sc->sc_dev.dv_xname, intrstr); 311 312 if (wpp->wpp_plx) { 313 /* 314 * Setup the PLX chip for level interrupts and config index 1 315 * XXX - should really reset the PLX chip too. 316 */ 317 bus_space_write_1(memt, memh, 318 WI_PLX_COR_OFFSET, WI_PLX_COR_VALUE); 319 } else { 320 /* reset HFA3842 MAC core */ 321 wi_pci_reset(sc); 322 } 323 324 printf("%s:", sc->sc_dev.dv_xname); 325 if (wi_attach(sc) != 0) { 326 printf("%s: failed to attach controller\n", 327 sc->sc_dev.dv_xname); 328 pci_intr_disestablish(pa->pa_pc, sc->sc_ih); 329 return; 330 } 331 332 /* Add a suspend hook to restore PCI config state */ 333 psc->sc_powerhook = powerhook_establish(wi_pci_powerhook, psc); 334 if (psc->sc_powerhook == NULL) 335 printf ("%s: WARNING: unable to establish pci power hook\n", 336 sc->sc_dev.dv_xname); 337 } 338 339 static void 340 wi_pci_powerhook(why, arg) 341 int why; 342 void *arg; 343 { 344 struct wi_pci_softc *psc = arg; 345 struct wi_softc *sc = &psc->psc_wi; 346 347 wi_power(sc, why); 348 } 349
Indexes created Mon Sep 22 13:09:51 GMT 2025