awi.c revision 1.60
1 /* $NetBSD: awi.c,v 1.60 2004/01/15 09:39:15 onoe Exp $ */ 2 3 /*- 4 * Copyright (c) 1999,2000,2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bill Sommerfeld 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * Driver for AMD 802.11 firmware. 40 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 41 * 42 * More-or-less a generic ethernet-like if driver, with 802.11 gorp added. 43 */ 44 45 /* 46 * todo: 47 * - flush tx queue on resynch. 48 * - clear oactive on "down". 49 * - rewrite copy-into-mbuf code 50 * - mgmt state machine gets stuck retransmitting assoc requests. 51 * - multicast filter. 52 * - fix device reset so it's more likely to work 53 * - show status goo through ifmedia. 54 * 55 * more todo: 56 * - deal with more 802.11 frames. 57 * - send reassoc request 58 * - deal with reassoc response 59 * - send/deal with disassociation 60 * - deal with "full" access points (no room for me). 61 * - power save mode 62 * 63 * later: 64 * - SSID preferences 65 * - need ioctls for poking at the MIBs 66 * - implement ad-hoc mode (including bss creation). 67 * - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?) 68 * (focus on inf. mode since that will be needed for ietf) 69 * - deal with DH vs. FH versions of the card 70 * - deal with faster cards (2mb/s) 71 * - ?WEP goo (mmm, rc4) (it looks not particularly useful). 72 * - ifmedia revision. 73 * - common 802.11 mibish things. 74 * - common 802.11 media layer. 75 */ 76 77 /* 78 * Driver for AMD 802.11 PCnetMobile firmware. 79 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 80 * 81 * The initial version of the driver was written by 82 * Bill Sommerfeld <sommerfeld (at) NetBSD.org>. 83 * Then the driver module completely rewritten to support cards with DS phy 84 * and to support adhoc mode by Atsushi Onoe <onoe (at) NetBSD.org> 85 */ 86 87 #include <sys/cdefs.h> 88 #ifdef __NetBSD__ 89 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.60 2004/01/15 09:39:15 onoe Exp $"); 90 #endif 91 #ifdef __FreeBSD__ 92 __FBSDID("$FreeBSD$"); 93 #endif 94 95 #include "opt_inet.h" 96 #ifdef __NetBSD__ 97 #include "bpfilter.h" 98 #endif 99 #ifdef __FreeBSD__ 100 #define NBPFILTER 1 101 #endif 102 103 #include <sys/param.h> 104 #include <sys/systm.h> 105 #include <sys/kernel.h> 106 #include <sys/mbuf.h> 107 #include <sys/malloc.h> 108 #include <sys/proc.h> 109 #include <sys/socket.h> 110 #include <sys/sockio.h> 111 #include <sys/errno.h> 112 #include <sys/endian.h> 113 #ifdef __FreeBSD__ 114 #include <sys/bus.h> 115 #endif 116 #ifdef __NetBSD__ 117 #include <sys/device.h> 118 #endif 119 120 #include <net/if.h> 121 #include <net/if_dl.h> 122 #ifdef __NetBSD__ 123 #include <net/if_ether.h> 124 #endif 125 #ifdef __FreeBSD__ 126 #include <net/ethernet.h> 127 #include <net/if_arp.h> 128 #endif 129 #include <net/if_media.h> 130 #include <net/if_llc.h> 131 132 #include <net80211/ieee80211_var.h> 133 #ifdef __NetBSD__ 134 #include <net80211/ieee80211_compat.h> 135 #endif 136 137 #if NBPFILTER > 0 138 #include <net/bpf.h> 139 #endif 140 141 #include <machine/cpu.h> 142 #include <machine/bus.h> 143 144 #ifdef __NetBSD__ 145 #include <dev/ic/am79c930reg.h> 146 #include <dev/ic/am79c930var.h> 147 #include <dev/ic/awireg.h> 148 #include <dev/ic/awivar.h> 149 #endif 150 #ifdef __FreeBSD__ 151 #include <dev/awi/am79c930reg.h> 152 #include <dev/awi/am79c930var.h> 153 #include <dev/awi/awireg.h> 154 #include <dev/awi/awivar.h> 155 #endif 156 157 #ifdef __FreeBSD__ 158 static void awi_init0(void *); 159 #endif 160 static int awi_init(struct ifnet *); 161 static void awi_stop(struct ifnet *, int); 162 static void awi_start(struct ifnet *); 163 static void awi_watchdog(struct ifnet *); 164 static int awi_ioctl(struct ifnet *, u_long, caddr_t); 165 static int awi_media_change(struct ifnet *); 166 static void awi_media_status(struct ifnet *, struct ifmediareq *); 167 static int awi_mode_init(struct awi_softc *); 168 static void awi_rx_int(struct awi_softc *); 169 static void awi_tx_int(struct awi_softc *); 170 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 171 static int awi_hw_init(struct awi_softc *); 172 static int awi_init_mibs(struct awi_softc *); 173 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 174 static int awi_cmd(struct awi_softc *, u_int8_t, int); 175 static int awi_cmd_wait(struct awi_softc *); 176 static void awi_cmd_done(struct awi_softc *); 177 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 178 static int awi_lock(struct awi_softc *); 179 static void awi_unlock(struct awi_softc *); 180 static int awi_intr_lock(struct awi_softc *); 181 static void awi_intr_unlock(struct awi_softc *); 182 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 183 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 184 struct ieee80211_node *, int, int, u_int32_t); 185 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 186 int); 187 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 188 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 189 190 /* unaligned little endian access */ 191 #define LE_READ_2(p) \ 192 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 193 #define LE_READ_4(p) \ 194 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 195 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 196 #define LE_WRITE_2(p, v) \ 197 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 198 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 199 #define LE_WRITE_4(p, v) \ 200 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 201 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 202 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 203 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 204 205 struct awi_chanset awi_chanset[] = { 206 /* PHY type domain min max def */ 207 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 208 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 209 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 210 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 211 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 212 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 213 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 214 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 215 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 216 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 217 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 218 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 219 { 0, 0 } 220 }; 221 222 #ifdef __FreeBSD__ 223 devclass_t awi_devclass; 224 225 #if __FreeBSD_version < 500043 226 static char *ether_sprintf(u_int8_t *); 227 228 static char * 229 ether_sprintf(u_int8_t *enaddr) 230 { 231 static char strbuf[18]; 232 233 sprintf(strbuf, "%6D", enaddr, ":"); 234 return strbuf; 235 } 236 #endif 237 238 #define IFQ_PURGE(ifq) IF_DRAIN(ifq) 239 #define IF_POLL(ifq, m) ((m) = (ifq)->ifq_head) 240 #define IFQ_POLL(ifq, m) IF_POLL((ifq), (m)) 241 #define IFQ_DEQUEUE(ifq, m) IF_DEQUEUE((ifq), (m)) 242 243 #endif 244 245 #ifdef AWI_DEBUG 246 int awi_debug = 0; 247 248 #define DPRINTF(X) if (awi_debug) printf X 249 #define DPRINTF2(X) if (awi_debug > 1) printf X 250 #else 251 #define DPRINTF(X) 252 #define DPRINTF2(X) 253 #endif 254 255 int 256 awi_attach(struct awi_softc *sc) 257 { 258 struct ieee80211com *ic = &sc->sc_ic; 259 struct ifnet *ifp = &ic->ic_if; 260 int s, i, error, nrate; 261 int mword; 262 enum ieee80211_phymode mode; 263 264 s = splnet(); 265 sc->sc_busy = 1; 266 sc->sc_attached = 0; 267 sc->sc_substate = AWI_ST_NONE; 268 if ((error = awi_hw_init(sc)) != 0) { 269 sc->sc_invalid = 1; 270 splx(s); 271 return error; 272 } 273 error = awi_init_mibs(sc); 274 if (error != 0) { 275 sc->sc_invalid = 1; 276 splx(s); 277 return error; 278 } 279 ifp->if_softc = sc; 280 ifp->if_flags = 281 #ifdef IFF_NOTRAILERS 282 IFF_NOTRAILERS | 283 #endif 284 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 285 ifp->if_ioctl = awi_ioctl; 286 ifp->if_start = awi_start; 287 ifp->if_watchdog = awi_watchdog; 288 #ifdef __NetBSD__ 289 ifp->if_init = awi_init; 290 ifp->if_stop = awi_stop; 291 IFQ_SET_READY(&ifp->if_snd); 292 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 293 #endif 294 #ifdef __FreeBSD__ 295 ifp->if_init = awi_init0; 296 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 297 if_initname(ifp, device_get_name(sc->sc_dev), 298 device_get_unit(sc->sc_dev)); 299 #endif 300 301 ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP; 302 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 303 ic->ic_phytype = IEEE80211_T_FH; 304 mode = IEEE80211_MODE_FH; 305 } else { 306 ic->ic_phytype = IEEE80211_T_DS; 307 ic->ic_caps |= IEEE80211_C_AHDEMO; 308 mode = IEEE80211_MODE_11B; 309 } 310 ic->ic_opmode = IEEE80211_M_STA; 311 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 312 memcpy(ic->ic_sup_rates[mode].rs_rates, 313 sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 314 ic->ic_sup_rates[mode].rs_nrates = nrate; 315 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 316 317 printf("%s: IEEE802.11 %s (firmware %s)\n", ifp->if_xname, 318 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 319 printf("%s: 802.11 address: %s\n", ifp->if_xname, 320 ether_sprintf(ic->ic_myaddr)); 321 322 #ifdef __NetBSD__ 323 if_attach(ifp); 324 #endif 325 ieee80211_ifattach(ifp); 326 327 sc->sc_newstate = ic->ic_newstate; 328 ic->ic_newstate = awi_newstate; 329 330 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 331 ic->ic_recv_mgmt = awi_recv_mgmt; 332 333 sc->sc_send_mgmt = ic->ic_send_mgmt; 334 ic->ic_send_mgmt = awi_send_mgmt; 335 336 ieee80211_media_init(ifp, awi_media_change, awi_media_status); 337 338 /* Melco compatibility mode. */ 339 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 340 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 341 ADD(IFM_AUTO, IFM_FLAG0); 342 343 for (i = 0; i < nrate; i++) { 344 mword = ieee80211_rate2media(ic, 345 ic->ic_sup_rates[mode].rs_rates[i], mode); 346 if (mword == 0) 347 continue; 348 ADD(mword, IFM_FLAG0); 349 } 350 #undef ADD 351 352 #ifdef __NetBSD__ 353 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 354 printf("%s: WARNING: unable to establish shutdown hook\n", 355 ifp->if_xname); 356 if ((sc->sc_powerhook = powerhook_establish(awi_power, sc)) == NULL) 357 printf("%s: WARNING: unable to establish power hook\n", 358 ifp->if_xname); 359 #endif 360 sc->sc_attached = 1; 361 splx(s); 362 363 /* ready to accept ioctl */ 364 awi_unlock(sc); 365 366 return 0; 367 } 368 369 int 370 awi_detach(struct awi_softc *sc) 371 { 372 struct ifnet *ifp = &sc->sc_ic.ic_if; 373 int s; 374 375 if (!sc->sc_attached) 376 return 0; 377 378 s = splnet(); 379 sc->sc_invalid = 1; 380 awi_stop(ifp, 1); 381 382 while (sc->sc_sleep_cnt > 0) { 383 wakeup(sc); 384 (void)tsleep(sc, PWAIT, "awidet", 1); 385 } 386 ieee80211_ifdetach(ifp); 387 #ifdef __NetBSD__ 388 if_detach(ifp); 389 shutdownhook_disestablish(sc->sc_sdhook); 390 powerhook_disestablish(sc->sc_powerhook); 391 #endif 392 splx(s); 393 return 0; 394 } 395 396 #ifdef __NetBSD__ 397 int 398 awi_activate(struct device *self, enum devact act) 399 { 400 struct awi_softc *sc = (struct awi_softc *)self; 401 struct ifnet *ifp = &sc->sc_ic.ic_if; 402 int s, error = 0; 403 404 s = splnet(); 405 switch (act) { 406 case DVACT_ACTIVATE: 407 error = EOPNOTSUPP; 408 break; 409 case DVACT_DEACTIVATE: 410 sc->sc_invalid = 1; 411 if_deactivate(ifp); 412 break; 413 } 414 splx(s); 415 return error; 416 } 417 418 void 419 awi_power(int why, void *arg) 420 { 421 struct awi_softc *sc = arg; 422 struct ifnet *ifp = &sc->sc_ic.ic_if; 423 int s; 424 int ocansleep; 425 426 DPRINTF(("awi_power: %d\n", why)); 427 s = splnet(); 428 ocansleep = sc->sc_cansleep; 429 sc->sc_cansleep = 0; 430 switch (why) { 431 case PWR_SUSPEND: 432 case PWR_STANDBY: 433 awi_stop(ifp, 1); 434 break; 435 case PWR_RESUME: 436 if (ifp->if_flags & IFF_UP) { 437 awi_init(ifp); 438 (void)awi_intr(sc); /* make sure */ 439 } 440 break; 441 case PWR_SOFTSUSPEND: 442 case PWR_SOFTSTANDBY: 443 case PWR_SOFTRESUME: 444 break; 445 } 446 sc->sc_cansleep = ocansleep; 447 splx(s); 448 } 449 #endif /* __NetBSD__ */ 450 451 void 452 awi_shutdown(void *arg) 453 { 454 struct awi_softc *sc = arg; 455 struct ifnet *ifp = &sc->sc_ic.ic_if; 456 457 if (sc->sc_attached) 458 awi_stop(ifp, 1); 459 } 460 461 int 462 awi_intr(void *arg) 463 { 464 struct awi_softc *sc = arg; 465 u_int16_t status; 466 int handled = 0, ocansleep; 467 #ifdef AWI_DEBUG 468 static const char *intname[] = { 469 "CMD", "RX", "TX", "SCAN_CMPLT", 470 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 471 "TXDATA", "TXBCAST", "TXPS", "TXCF", 472 "TXMGT", "#13", "RXDATA", "RXMGT" 473 }; 474 #endif 475 476 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) { 477 DPRINTF(("awi_intr: stray interrupt: " 478 "enabled %d enab_intr %d invalid %d\n", 479 sc->sc_enabled, sc->sc_enab_intr, sc->sc_invalid)); 480 return 0; 481 } 482 483 am79c930_gcr_setbits(&sc->sc_chip, 484 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 485 awi_write_1(sc, AWI_DIS_PWRDN, 1); 486 ocansleep = sc->sc_cansleep; 487 sc->sc_cansleep = 0; 488 489 for (;;) { 490 if (awi_intr_lock(sc) != 0) 491 break; 492 status = awi_read_1(sc, AWI_INTSTAT); 493 awi_write_1(sc, AWI_INTSTAT, 0); 494 awi_write_1(sc, AWI_INTSTAT, 0); 495 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 496 awi_write_1(sc, AWI_INTSTAT2, 0); 497 DELAY(10); 498 awi_intr_unlock(sc); 499 if (!sc->sc_cmd_inprog) 500 status &= ~AWI_INT_CMD; /* make sure */ 501 if (status == 0) 502 break; 503 #ifdef AWI_DEBUG 504 if (awi_debug > 1) { 505 int i; 506 507 printf("awi_intr: status 0x%04x", status); 508 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 509 i++) { 510 if (status & (1 << i)) 511 printf(" %s", intname[i]); 512 } 513 printf("\n"); 514 } 515 #endif 516 handled = 1; 517 if (status & AWI_INT_RX) 518 awi_rx_int(sc); 519 if (status & AWI_INT_TX) 520 awi_tx_int(sc); 521 if (status & AWI_INT_CMD) 522 awi_cmd_done(sc); 523 if (status & AWI_INT_SCAN_CMPLT) { 524 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 525 sc->sc_substate == AWI_ST_NONE) 526 ieee80211_next_scan(&sc->sc_ic.ic_if); 527 } 528 } 529 sc->sc_cansleep = ocansleep; 530 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 531 awi_write_1(sc, AWI_DIS_PWRDN, 0); 532 return handled; 533 } 534 535 #ifdef __FreeBSD__ 536 static void 537 awi_init0(void *arg) 538 { 539 struct awi_softc *sc = arg; 540 541 (void)awi_init(&sc->sc_ic.ic_if); 542 } 543 #endif 544 545 static int 546 awi_init(struct ifnet *ifp) 547 { 548 struct awi_softc *sc = ifp->if_softc; 549 struct ieee80211com *ic = &sc->sc_ic; 550 struct ieee80211_node *ni = ic->ic_bss; 551 int error; 552 553 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 554 if (sc->sc_enabled) { 555 awi_stop(ifp, 0); 556 } else { 557 if (sc->sc_enable) 558 (*sc->sc_enable)(sc); 559 sc->sc_enabled = 1; 560 if ((error = awi_hw_init(sc)) != 0) { 561 if (sc->sc_disable) 562 (*sc->sc_disable)(sc); 563 sc->sc_enabled = 0; 564 return error; 565 } 566 } 567 ic->ic_state = IEEE80211_S_INIT; 568 569 ic->ic_flags &= ~IEEE80211_F_IBSSON; 570 switch (ic->ic_opmode) { 571 case IEEE80211_M_STA: 572 sc->sc_mib_local.Network_Mode = 1; 573 sc->sc_mib_local.Acting_as_AP = 0; 574 break; 575 case IEEE80211_M_IBSS: 576 ic->ic_flags |= IEEE80211_F_IBSSON; 577 /* FALLTHRU */ 578 case IEEE80211_M_AHDEMO: 579 sc->sc_mib_local.Network_Mode = 0; 580 sc->sc_mib_local.Acting_as_AP = 0; 581 break; 582 case IEEE80211_M_HOSTAP: 583 sc->sc_mib_local.Network_Mode = 1; 584 sc->sc_mib_local.Acting_as_AP = 1; 585 break; 586 case IEEE80211_M_MONITOR: 587 return ENODEV; 588 } 589 #if 0 590 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 591 #endif 592 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 593 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 594 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 595 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 596 ic->ic_des_esslen); 597 598 if ((error = awi_mode_init(sc)) != 0) { 599 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 600 awi_stop(ifp, 1); 601 return error; 602 } 603 604 /* start transmitter */ 605 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 606 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 607 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 608 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 609 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 610 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 611 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 612 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 613 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 614 awi_write_4(sc, AWI_CA_TX_MGT, 0); 615 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 616 awi_write_4(sc, AWI_CA_TX_PS, 0); 617 awi_write_4(sc, AWI_CA_TX_CF, 0); 618 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 619 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 620 awi_stop(ifp, 1); 621 return error; 622 } 623 624 /* start receiver */ 625 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 626 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 627 awi_stop(ifp, 1); 628 return error; 629 } 630 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 631 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 632 633 ifp->if_flags |= IFF_RUNNING; 634 ifp->if_flags &= ~IFF_OACTIVE; 635 ic->ic_state = IEEE80211_S_INIT; 636 637 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 638 ic->ic_opmode == IEEE80211_M_HOSTAP) { 639 ni->ni_chan = ic->ic_ibss_chan; 640 ni->ni_intval = ic->ic_lintval; 641 ni->ni_rssi = 0; 642 ni->ni_rstamp = 0; 643 memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 644 ni->ni_rates = 645 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 646 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 647 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 648 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 649 ni->ni_esslen = ic->ic_des_esslen; 650 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 651 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 652 if (ic->ic_phytype == IEEE80211_T_FH) { 653 ni->ni_fhdwell = 200; /* XXX */ 654 ni->ni_fhindex = 1; 655 } 656 } else { 657 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 658 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 659 ni->ni_esslen = 0; 660 } 661 if (ic->ic_flags & IEEE80211_F_WEPON) 662 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 663 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 664 ic->ic_flags |= IEEE80211_F_SIBSS; 665 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 666 sc->sc_substate = AWI_ST_NONE; 667 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 668 } else { 669 /* XXX check sc->sc_cur_chan */ 670 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 671 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 672 } 673 return 0; 674 } 675 676 static void 677 awi_stop(struct ifnet *ifp, int disable) 678 { 679 struct awi_softc *sc = ifp->if_softc; 680 681 if (!sc->sc_enabled) 682 return; 683 684 DPRINTF(("awi_stop(%d)\n", disable)); 685 686 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 687 688 if (!sc->sc_invalid) { 689 if (sc->sc_cmd_inprog) 690 (void)awi_cmd_wait(sc); 691 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 692 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 693 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 694 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 695 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 696 awi_write_1(sc, AWI_CA_FTX_PS, 0); 697 awi_write_1(sc, AWI_CA_FTX_CF, 0); 698 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 699 } 700 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 701 ifp->if_timer = 0; 702 sc->sc_tx_timer = sc->sc_rx_timer = 0; 703 if (sc->sc_rxpend != NULL) { 704 m_freem(sc->sc_rxpend); 705 sc->sc_rxpend = NULL; 706 } 707 IFQ_PURGE(&ifp->if_snd); 708 709 if (disable) { 710 if (!sc->sc_invalid) 711 am79c930_gcr_setbits(&sc->sc_chip, 712 AM79C930_GCR_CORESET); 713 if (sc->sc_disable) 714 (*sc->sc_disable)(sc); 715 sc->sc_enabled = 0; 716 } 717 } 718 719 static void 720 awi_start(struct ifnet *ifp) 721 { 722 struct awi_softc *sc = ifp->if_softc; 723 struct ieee80211com *ic = &sc->sc_ic; 724 struct ieee80211_node *ni; 725 struct ieee80211_frame *wh; 726 struct mbuf *m, *m0; 727 int len, dowep; 728 u_int32_t txd, frame, ntxd; 729 u_int8_t rate; 730 731 if (!sc->sc_enabled || sc->sc_invalid) 732 return; 733 734 for (;;) { 735 txd = sc->sc_txnext; 736 IF_POLL(&ic->ic_mgtq, m0); 737 dowep = 0; 738 if (m0 != NULL) { 739 len = m0->m_pkthdr.len; 740 if (awi_next_txd(sc, len, &frame, &ntxd)) { 741 ifp->if_flags |= IFF_OACTIVE; 742 break; 743 } 744 IF_DEQUEUE(&ic->ic_mgtq, m0); 745 } else { 746 if (ic->ic_state != IEEE80211_S_RUN) 747 break; 748 IFQ_POLL(&ifp->if_snd, m0); 749 if (m0 == NULL) 750 break; 751 /* 752 * Need to calculate the real length to determine 753 * if the transmit buffer has a room for the packet. 754 */ 755 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 756 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 757 len += sizeof(struct llc) - 758 sizeof(struct ether_header); 759 if (ic->ic_flags & IEEE80211_F_WEPON) { 760 dowep = 1; 761 len += IEEE80211_WEP_IVLEN + 762 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 763 } 764 if (awi_next_txd(sc, len, &frame, &ntxd)) { 765 ifp->if_flags |= IFF_OACTIVE; 766 break; 767 } 768 IFQ_DEQUEUE(&ifp->if_snd, m0); 769 ifp->if_opackets++; 770 #if NBPFILTER > 0 771 if (ifp->if_bpf) 772 bpf_mtap(ifp->if_bpf, m0); 773 #endif 774 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 775 m0 = awi_ether_encap(sc, m0); 776 else 777 m0 = ieee80211_encap(ifp, m0, &ni); 778 if (m0 == NULL) { 779 ifp->if_oerrors++; 780 continue; 781 } 782 if (ni != NULL && ni != ic->ic_bss) 783 ieee80211_free_node(ic, ni); 784 wh = mtod(m0, struct ieee80211_frame *); 785 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 786 (ic->ic_opmode == IEEE80211_M_HOSTAP || 787 ic->ic_opmode == IEEE80211_M_IBSS) && 788 sc->sc_adhoc_ap == 0 && 789 (ifp->if_flags & IFF_LINK0) == 0 && 790 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 791 IEEE80211_FC0_TYPE_DATA && ni == NULL) { 792 m_freem(m0); 793 ifp->if_oerrors++; 794 continue; 795 } 796 } 797 #if NBPFILTER > 0 798 if (ic->ic_rawbpf) 799 bpf_mtap(ic->ic_rawbpf, m0); 800 #endif 801 if (dowep) { 802 if ((m0 = ieee80211_wep_crypt(ifp, m0, 1)) == NULL) { 803 ifp->if_oerrors++; 804 continue; 805 } 806 } 807 #ifdef DIAGNOSTIC 808 if (m0->m_pkthdr.len != len) { 809 printf("%s: length %d should be %d\n", 810 ic->ic_if.if_xname, m0->m_pkthdr.len, len); 811 m_freem(m0); 812 ifp->if_oerrors++; 813 continue; 814 } 815 #endif 816 817 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 818 ieee80211_dump_pkt(m0->m_data, m0->m_len, 819 ic->ic_bss->ni_rates. 820 rs_rates[ic->ic_bss->ni_txrate] & 821 IEEE80211_RATE_VAL, -1); 822 823 for (m = m0, len = 0; m != NULL; m = m->m_next) { 824 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 825 m->m_len); 826 len += m->m_len; 827 } 828 m_freem(m0); 829 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 830 IEEE80211_RATE_VAL) * 5; 831 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 832 awi_write_4(sc, txd + AWI_TXD_START, frame); 833 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 834 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 835 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 836 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 837 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 838 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 839 sc->sc_txnext = ntxd; 840 841 sc->sc_tx_timer = 5; 842 ifp->if_timer = 1; 843 } 844 } 845 846 static void 847 awi_watchdog(struct ifnet *ifp) 848 { 849 struct awi_softc *sc = ifp->if_softc; 850 u_int32_t prevdone; 851 int ocansleep; 852 853 ifp->if_timer = 0; 854 if (!sc->sc_enabled || sc->sc_invalid) 855 return; 856 857 ocansleep = sc->sc_cansleep; 858 sc->sc_cansleep = 0; 859 if (sc->sc_tx_timer) { 860 if (--sc->sc_tx_timer == 0) { 861 printf("%s: device timeout\n", ifp->if_xname); 862 prevdone = sc->sc_txdone; 863 awi_tx_int(sc); 864 if (sc->sc_txdone == prevdone) { 865 ifp->if_oerrors++; 866 awi_init(ifp); 867 goto out; 868 } 869 } 870 ifp->if_timer = 1; 871 } 872 if (sc->sc_rx_timer) { 873 if (--sc->sc_rx_timer == 0) { 874 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 875 ieee80211_new_state(&sc->sc_ic, 876 IEEE80211_S_SCAN, -1); 877 goto out; 878 } 879 } else 880 ifp->if_timer = 1; 881 } 882 /* TODO: rate control */ 883 ieee80211_watchdog(ifp); 884 out: 885 sc->sc_cansleep = ocansleep; 886 } 887 888 static int 889 awi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 890 { 891 struct awi_softc *sc = ifp->if_softc; 892 struct ifreq *ifr = (struct ifreq *)data; 893 int s, error; 894 895 s = splnet(); 896 /* serialize ioctl, since we may sleep */ 897 if ((error = awi_lock(sc)) != 0) 898 goto cantlock; 899 900 switch (cmd) { 901 case SIOCSIFFLAGS: 902 if (ifp->if_flags & IFF_UP) { 903 if (sc->sc_enabled) { 904 /* 905 * To avoid rescanning another access point, 906 * do not call awi_init() here. Instead, 907 * only reflect promisc mode settings. 908 */ 909 error = awi_mode_init(sc); 910 } else 911 error = awi_init(ifp); 912 } else if (sc->sc_enabled) 913 awi_stop(ifp, 1); 914 break; 915 case SIOCSIFMEDIA: 916 case SIOCGIFMEDIA: 917 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 918 break; 919 case SIOCADDMULTI: 920 case SIOCDELMULTI: 921 #ifdef __FreeBSD__ 922 error = ENETRESET; /* XXX */ 923 #else 924 error = (cmd == SIOCADDMULTI) ? 925 ether_addmulti(ifr, &sc->sc_ic.ic_ec) : 926 ether_delmulti(ifr, &sc->sc_ic.ic_ec); 927 #endif 928 if (error == ENETRESET) { 929 /* do not rescan */ 930 if (sc->sc_enabled) 931 error = awi_mode_init(sc); 932 else 933 error = 0; 934 } 935 break; 936 default: 937 error = ieee80211_ioctl(ifp, cmd, data); 938 if (error == ENETRESET) { 939 if (sc->sc_enabled) 940 error = awi_init(ifp); 941 else 942 error = 0; 943 } 944 break; 945 } 946 awi_unlock(sc); 947 cantlock: 948 splx(s); 949 return error; 950 } 951 952 /* 953 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 954 * 955 * TBD factor with ieee80211_media_change 956 */ 957 static int 958 awi_media_change(struct ifnet *ifp) 959 { 960 struct awi_softc *sc = ifp->if_softc; 961 struct ieee80211com *ic = &sc->sc_ic; 962 struct ifmedia_entry *ime; 963 enum ieee80211_opmode newmode; 964 int i, rate, newadhoc_ap, error = 0; 965 966 ime = ic->ic_media.ifm_cur; 967 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 968 i = -1; 969 } else { 970 struct ieee80211_rateset *rs = 971 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 972 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 973 rate = ieee80211_media2rate(ime->ifm_media); 974 if (rate == 0) 975 return EINVAL; 976 for (i = 0; i < rs->rs_nrates; i++) { 977 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 978 break; 979 } 980 if (i == rs->rs_nrates) 981 return EINVAL; 982 } 983 if (ic->ic_fixed_rate != i) { 984 ic->ic_fixed_rate = i; 985 error = ENETRESET; 986 } 987 988 /* 989 * combination of mediaopt 990 * 991 * hostap adhoc flag0 opmode adhoc_ap comment 992 * + - - HOSTAP 0 HostAP 993 * - + - IBSS 0 IBSS 994 * - + + AHDEMO 0 WaveLAN adhoc 995 * - - + IBSS 1 Melco old Sta 996 * also LINK0 997 * - - - STA 0 Infra Station 998 */ 999 newadhoc_ap = 0; 1000 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 1001 newmode = IEEE80211_M_HOSTAP; 1002 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 1003 if (ic->ic_phytype == IEEE80211_T_DS && 1004 (ime->ifm_media & IFM_FLAG0)) 1005 newmode = IEEE80211_M_AHDEMO; 1006 else 1007 newmode = IEEE80211_M_IBSS; 1008 } else if (ime->ifm_media & IFM_FLAG0) { 1009 newmode = IEEE80211_M_IBSS; 1010 newadhoc_ap = 1; 1011 } else 1012 newmode = IEEE80211_M_STA; 1013 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 1014 ic->ic_opmode = newmode; 1015 sc->sc_adhoc_ap = newadhoc_ap; 1016 error = ENETRESET; 1017 } 1018 1019 if (error == ENETRESET) { 1020 if (sc->sc_enabled) 1021 error = awi_init(ifp); 1022 else 1023 error = 0; 1024 } 1025 return error; 1026 } 1027 1028 static void 1029 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1030 { 1031 struct awi_softc *sc = ifp->if_softc; 1032 struct ieee80211com *ic = &sc->sc_ic; 1033 int rate; 1034 enum ieee80211_phymode mode; 1035 1036 imr->ifm_status = IFM_AVALID; 1037 if (ic->ic_state == IEEE80211_S_RUN) 1038 imr->ifm_status |= IFM_ACTIVE; 1039 imr->ifm_active = IFM_IEEE80211; 1040 if (ic->ic_phytype == IEEE80211_T_FH) 1041 mode = IEEE80211_MODE_FH; 1042 else 1043 mode = IEEE80211_MODE_11B; 1044 if (ic->ic_state == IEEE80211_S_RUN) { 1045 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 1046 IEEE80211_RATE_VAL; 1047 } else { 1048 if (ic->ic_fixed_rate == -1) 1049 rate = 0; 1050 else 1051 rate = ic->ic_sup_rates[mode]. 1052 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 1053 } 1054 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 1055 switch (ic->ic_opmode) { 1056 case IEEE80211_M_MONITOR: /* we should never reach here */ 1057 break; 1058 case IEEE80211_M_STA: 1059 break; 1060 case IEEE80211_M_IBSS: 1061 if (sc->sc_adhoc_ap) 1062 imr->ifm_active |= IFM_FLAG0; 1063 else 1064 imr->ifm_active |= IFM_IEEE80211_ADHOC; 1065 break; 1066 case IEEE80211_M_AHDEMO: 1067 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1068 break; 1069 case IEEE80211_M_HOSTAP: 1070 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1071 break; 1072 } 1073 } 1074 1075 static int 1076 awi_mode_init(struct awi_softc *sc) 1077 { 1078 struct ifnet *ifp = &sc->sc_ic.ic_if; 1079 int n, error; 1080 #ifdef __FreeBSD__ 1081 struct ifmultiaddr *ifma; 1082 #else 1083 struct ether_multi *enm; 1084 struct ether_multistep step; 1085 #endif 1086 1087 /* reinitialize muticast filter */ 1088 n = 0; 1089 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1090 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1091 (ifp->if_flags & IFF_PROMISC)) { 1092 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1093 goto set_mib; 1094 } 1095 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1096 #ifdef __FreeBSD__ 1097 if (ifp->if_amcount != 0) 1098 goto set_mib; 1099 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1100 if (ifma->ifma_addr->sa_family != AF_LINK) 1101 continue; 1102 if (n == AWI_GROUP_ADDR_SIZE) 1103 goto set_mib; 1104 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1105 LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); 1106 n++; 1107 } 1108 #else 1109 ETHER_FIRST_MULTI(step, &sc->sc_ic.ic_ec, enm); 1110 while (enm != NULL) { 1111 if (n == AWI_GROUP_ADDR_SIZE || 1112 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1113 goto set_mib; 1114 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1115 enm->enm_addrlo); 1116 n++; 1117 ETHER_NEXT_MULTI(step, enm); 1118 } 1119 #endif 1120 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1121 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1122 IEEE80211_ADDR_LEN); 1123 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1124 1125 set_mib: 1126 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1127 ifp->if_flags &= ~IFF_ALLMULTI; 1128 else 1129 ifp->if_flags |= IFF_ALLMULTI; 1130 sc->sc_mib_mgt.Wep_Required = 1131 (sc->sc_ic.ic_flags & IEEE80211_F_WEPON) ? AWI_WEP_ON : AWI_WEP_OFF; 1132 1133 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1134 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1135 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1136 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1137 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1138 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1139 return error; 1140 } 1141 return 0; 1142 } 1143 1144 static void 1145 awi_rx_int(struct awi_softc *sc) 1146 { 1147 struct ieee80211com *ic = &sc->sc_ic; 1148 struct ifnet *ifp = &ic->ic_if; 1149 struct ieee80211_frame *wh; 1150 struct ieee80211_node *ni; 1151 u_int8_t state, rate, rssi; 1152 u_int16_t len; 1153 u_int32_t frame, next, rstamp, rxoff; 1154 struct mbuf *m; 1155 1156 rxoff = sc->sc_rxdoff; 1157 for (;;) { 1158 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1159 if (state & AWI_RXD_ST_OWN) 1160 break; 1161 if (!(state & AWI_RXD_ST_CONSUMED)) { 1162 if (sc->sc_substate != AWI_ST_NONE) 1163 goto rx_next; 1164 if (state & AWI_RXD_ST_RXERROR) { 1165 ifp->if_ierrors++; 1166 goto rx_next; 1167 } 1168 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1169 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1170 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1171 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1172 0x7fff; 1173 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1174 m = awi_devget(sc, frame, len); 1175 if (m == NULL) { 1176 ifp->if_ierrors++; 1177 goto rx_next; 1178 } 1179 if (state & AWI_RXD_ST_LF) { 1180 /* TODO check my bss */ 1181 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1182 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1183 sc->sc_rx_timer = 10; 1184 ifp->if_timer = 1; 1185 } 1186 if ((ifp->if_flags & IFF_DEBUG) && 1187 (ifp->if_flags & IFF_LINK2)) 1188 ieee80211_dump_pkt(m->m_data, m->m_len, 1189 rate / 5, rssi); 1190 if ((ifp->if_flags & IFF_LINK0) || 1191 sc->sc_adhoc_ap) 1192 m = awi_ether_modcap(sc, m); 1193 else 1194 m = m_pullup(m, sizeof(*wh)); 1195 if (m == NULL) { 1196 ifp->if_ierrors++; 1197 goto rx_next; 1198 } 1199 wh = mtod(m, struct ieee80211_frame *); 1200 #ifdef __NetBSD__ 1201 ni = ieee80211_find_rxnode(ic, wh); 1202 #else 1203 if (ic->ic_opmode != IEEE80211_M_STA) { 1204 ni = ieee80211_find_node(ic, 1205 wh->i_addr2); 1206 if (ni == NULL) 1207 ni = ieee80211_ref_node( 1208 ic->ic_bss); 1209 } else 1210 ni = ieee80211_ref_node(ic->ic_bss); 1211 #endif 1212 ieee80211_input(ifp, m, ni, rssi, rstamp); 1213 /* 1214 * The frame may have caused the 1215 * node to be marked for reclamation 1216 * (e.g. in response to a DEAUTH 1217 * message) so use free_node here 1218 * instead of unref_node. 1219 */ 1220 if (ni == ic->ic_bss) 1221 ieee80211_unref_node(&ni); 1222 else 1223 ieee80211_free_node(ic, ni); 1224 } else 1225 sc->sc_rxpend = m; 1226 rx_next: 1227 state |= AWI_RXD_ST_CONSUMED; 1228 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1229 } 1230 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1231 if (next & AWI_RXD_NEXT_LAST) 1232 break; 1233 /* make sure the next pointer is correct */ 1234 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1235 break; 1236 state |= AWI_RXD_ST_OWN; 1237 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1238 rxoff = next & 0x7fff; 1239 } 1240 sc->sc_rxdoff = rxoff; 1241 } 1242 1243 static void 1244 awi_tx_int(struct awi_softc *sc) 1245 { 1246 struct ifnet *ifp = &sc->sc_ic.ic_if; 1247 u_int8_t flags; 1248 1249 while (sc->sc_txdone != sc->sc_txnext) { 1250 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1251 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1252 break; 1253 if (flags & AWI_TXD_ST_ERROR) 1254 ifp->if_oerrors++; 1255 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1256 0x7fff; 1257 } 1258 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1259 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1260 sc->sc_tx_timer = 0; 1261 ifp->if_flags &= ~IFF_OACTIVE; 1262 awi_start(ifp); 1263 } 1264 1265 static struct mbuf * 1266 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1267 { 1268 struct ifnet *ifp = &sc->sc_ic.ic_if; 1269 struct mbuf *m; 1270 struct mbuf *top, **mp; 1271 u_int tlen; 1272 1273 top = sc->sc_rxpend; 1274 mp = ⊤ 1275 if (top != NULL) { 1276 sc->sc_rxpend = NULL; 1277 top->m_pkthdr.len += len; 1278 m = top; 1279 while (*mp != NULL) { 1280 m = *mp; 1281 mp = &m->m_next; 1282 } 1283 if (m->m_flags & M_EXT) 1284 tlen = m->m_ext.ext_size; 1285 else if (m->m_flags & M_PKTHDR) 1286 tlen = MHLEN; 1287 else 1288 tlen = MLEN; 1289 tlen -= m->m_len; 1290 if (tlen > len) 1291 tlen = len; 1292 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1293 off += tlen; 1294 len -= tlen; 1295 } 1296 1297 while (len > 0) { 1298 if (top == NULL) { 1299 MGETHDR(m, M_DONTWAIT, MT_DATA); 1300 if (m == NULL) 1301 return NULL; 1302 m->m_pkthdr.rcvif = ifp; 1303 m->m_pkthdr.len = len; 1304 m->m_len = MHLEN; 1305 m->m_flags |= M_HASFCS; 1306 } else { 1307 MGET(m, M_DONTWAIT, MT_DATA); 1308 if (m == NULL) { 1309 m_freem(top); 1310 return NULL; 1311 } 1312 m->m_len = MLEN; 1313 } 1314 if (len >= MINCLSIZE) { 1315 MCLGET(m, M_DONTWAIT); 1316 if (m->m_flags & M_EXT) 1317 m->m_len = m->m_ext.ext_size; 1318 } 1319 if (top == NULL) { 1320 int hdrlen = sizeof(struct ieee80211_frame) + 1321 sizeof(struct llc); 1322 caddr_t newdata = (caddr_t) 1323 ALIGN(m->m_data + hdrlen) - hdrlen; 1324 m->m_len -= newdata - m->m_data; 1325 m->m_data = newdata; 1326 } 1327 if (m->m_len > len) 1328 m->m_len = len; 1329 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1330 off += m->m_len; 1331 len -= m->m_len; 1332 *mp = m; 1333 mp = &m->m_next; 1334 } 1335 return top; 1336 } 1337 1338 /* 1339 * Initialize hardware and start firmware to accept commands. 1340 * Called everytime after power on firmware. 1341 */ 1342 1343 static int 1344 awi_hw_init(struct awi_softc *sc) 1345 { 1346 u_int8_t status; 1347 u_int16_t intmask; 1348 int i, error; 1349 1350 sc->sc_enab_intr = 0; 1351 sc->sc_invalid = 0; /* XXX: really? */ 1352 awi_drvstate(sc, AWI_DRV_RESET); 1353 1354 /* reset firmware */ 1355 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1356 DELAY(100); 1357 awi_write_1(sc, AWI_SELFTEST, 0); 1358 awi_write_1(sc, AWI_CMD, 0); 1359 awi_write_1(sc, AWI_BANNER, 0); 1360 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1361 DELAY(100); 1362 1363 /* wait for selftest completion */ 1364 for (i = 0; ; i++) { 1365 if (sc->sc_invalid) 1366 return ENXIO; 1367 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1368 printf("%s: failed to complete selftest (timeout)\n", 1369 sc->sc_ic.ic_if.if_xname); 1370 return ENXIO; 1371 } 1372 status = awi_read_1(sc, AWI_SELFTEST); 1373 if ((status & 0xf0) == 0xf0) 1374 break; 1375 if (sc->sc_cansleep) { 1376 sc->sc_sleep_cnt++; 1377 (void)tsleep(sc, PWAIT, "awitst", 1); 1378 sc->sc_sleep_cnt--; 1379 } else { 1380 DELAY(1000*1000/hz); 1381 } 1382 } 1383 if (status != AWI_SELFTEST_PASSED) { 1384 printf("%s: failed to complete selftest (code %x)\n", 1385 sc->sc_ic.ic_if.if_xname, status); 1386 return ENXIO; 1387 } 1388 1389 /* check banner to confirm firmware write it */ 1390 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1391 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1392 printf("%s: failed to complete selftest (bad banner)\n", 1393 sc->sc_ic.ic_if.if_xname); 1394 for (i = 0; i < AWI_BANNER_LEN; i++) 1395 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1396 printf("\n"); 1397 return ENXIO; 1398 } 1399 1400 /* initializing interrupt */ 1401 sc->sc_enab_intr = 1; 1402 error = awi_intr_lock(sc); 1403 if (error) 1404 return error; 1405 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1406 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1407 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1408 awi_write_1(sc, AWI_INTMASK2, 0); 1409 awi_write_1(sc, AWI_INTSTAT, 0); 1410 awi_write_1(sc, AWI_INTSTAT2, 0); 1411 awi_intr_unlock(sc); 1412 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1413 1414 /* issuing interface test command */ 1415 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1416 if (error) { 1417 printf("%s: failed to complete selftest", 1418 sc->sc_ic.ic_if.if_xname); 1419 if (error == ENXIO) 1420 printf(" (no hardware)\n"); 1421 else if (error != EWOULDBLOCK) 1422 printf(" (error %d)\n", error); 1423 else if (sc->sc_cansleep) 1424 printf(" (lost interrupt)\n"); 1425 else 1426 printf(" (command timeout)\n"); 1427 return error; 1428 } 1429 1430 /* Initialize VBM */ 1431 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1432 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1433 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1434 return 0; 1435 } 1436 1437 /* 1438 * Extract the factory default MIB value from firmware and assign the driver 1439 * default value. 1440 * Called once at attaching the interface. 1441 */ 1442 1443 static int 1444 awi_init_mibs(struct awi_softc *sc) 1445 { 1446 int chan, i, error; 1447 struct ieee80211com *ic = &sc->sc_ic; 1448 struct awi_chanset *cs; 1449 1450 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1451 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1452 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1453 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1454 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1455 printf("%s: failed to get default mib value (error %d)\n", 1456 ic->ic_if.if_xname, error); 1457 return error; 1458 } 1459 1460 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1461 for (cs = awi_chanset; ; cs++) { 1462 if (cs->cs_type == 0) { 1463 printf("%s: failed to set available channel\n", 1464 ic->ic_if.if_xname); 1465 return ENXIO; 1466 } 1467 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1468 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1469 break; 1470 } 1471 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1472 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1473 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1474 setbit(sc->sc_ic.ic_chan_avail, chan); 1475 /* XXX for FHSS, does frequency matter? */ 1476 ic->ic_channels[chan].ic_freq = 0; 1477 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1478 /* 1479 * According to the IEEE 802.11 specification, 1480 * hop pattern parameter for FH phy should be 1481 * incremented by 3 for given hop chanset, i.e., 1482 * the chanset parameter is calculated for given 1483 * hop patter. However, BayStack 650 Access Points 1484 * apparently use fixed hop chanset parameter value 1485 * 1 for any hop pattern. So we also try this 1486 * combination of hop chanset and pattern. 1487 */ 1488 chan = IEEE80211_FH_CHAN(1, i); 1489 setbit(sc->sc_ic.ic_chan_avail, chan); 1490 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1491 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1492 } 1493 } else { 1494 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1495 setbit(sc->sc_ic.ic_chan_avail, i); 1496 ic->ic_channels[i].ic_freq = 1497 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1498 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1499 } 1500 } 1501 sc->sc_cur_chan = cs->cs_def; 1502 1503 sc->sc_mib_local.Fragmentation_Dis = 1; 1504 sc->sc_mib_local.Add_PLCP_Dis = 0; 1505 sc->sc_mib_local.MAC_Hdr_Prsv = 1; 1506 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1507 sc->sc_mib_local.Re_Assembly_Dis = 1; 1508 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1509 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1510 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1511 sc->sc_mib_local.Check_Seq_Cntl_Dis = 1; 1512 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1513 sc->sc_mib_local.Network_Mode = 1; 1514 sc->sc_mib_local.PWD_Lvl = 0; 1515 sc->sc_mib_local.CFP_Mode = 0; 1516 1517 /* allocate buffers */ 1518 sc->sc_txbase = AWI_BUFFERS; 1519 sc->sc_txend = sc->sc_txbase + 1520 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1521 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1522 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1523 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1524 sc->sc_txend - sc->sc_txbase); 1525 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1526 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1527 AWI_BUFFERS_END - sc->sc_txend); 1528 sc->sc_mib_local.Acting_as_AP = 0; 1529 sc->sc_mib_local.Fill_CFP = 0; 1530 1531 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1532 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1533 1534 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1535 sc->sc_mib_mgt.aDTIM_Period = 1; 1536 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1537 return 0; 1538 } 1539 1540 static int 1541 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1542 { 1543 int error; 1544 u_int8_t size, *ptr; 1545 1546 switch (mib) { 1547 case AWI_MIB_LOCAL: 1548 ptr = (u_int8_t *)&sc->sc_mib_local; 1549 size = sizeof(sc->sc_mib_local); 1550 break; 1551 case AWI_MIB_ADDR: 1552 ptr = (u_int8_t *)&sc->sc_mib_addr; 1553 size = sizeof(sc->sc_mib_addr); 1554 break; 1555 case AWI_MIB_MAC: 1556 ptr = (u_int8_t *)&sc->sc_mib_mac; 1557 size = sizeof(sc->sc_mib_mac); 1558 break; 1559 case AWI_MIB_STAT: 1560 ptr = (u_int8_t *)&sc->sc_mib_stat; 1561 size = sizeof(sc->sc_mib_stat); 1562 break; 1563 case AWI_MIB_MGT: 1564 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1565 size = sizeof(sc->sc_mib_mgt); 1566 break; 1567 case AWI_MIB_PHY: 1568 ptr = (u_int8_t *)&sc->sc_mib_phy; 1569 size = sizeof(sc->sc_mib_phy); 1570 break; 1571 default: 1572 return EINVAL; 1573 } 1574 if (sc->sc_cmd_inprog) { 1575 if ((error = awi_cmd_wait(sc)) != 0) { 1576 if (error == EWOULDBLOCK) 1577 DPRINTF(("awi_mib: cmd %d inprog", 1578 sc->sc_cmd_inprog)); 1579 return error; 1580 } 1581 } 1582 sc->sc_cmd_inprog = cmd; 1583 if (cmd == AWI_CMD_SET_MIB) 1584 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1585 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1586 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1587 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1588 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1589 return error; 1590 if (cmd == AWI_CMD_GET_MIB) { 1591 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1592 #ifdef AWI_DEBUG 1593 if (awi_debug) { 1594 int i; 1595 1596 printf("awi_mib: #%d:", mib); 1597 for (i = 0; i < size; i++) 1598 printf(" %02x", ptr[i]); 1599 printf("\n"); 1600 } 1601 #endif 1602 } 1603 return 0; 1604 } 1605 1606 static int 1607 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1608 { 1609 u_int8_t status; 1610 int error = 0; 1611 #ifdef AWI_DEBUG 1612 static const char *cmdname[] = { 1613 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1614 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1615 }; 1616 #endif 1617 1618 #ifdef AWI_DEBUG 1619 if (awi_debug > 1) { 1620 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1621 printf("awi_cmd: #%d", cmd); 1622 else 1623 printf("awi_cmd: %s", cmdname[cmd]); 1624 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1625 } 1626 #endif 1627 sc->sc_cmd_inprog = cmd; 1628 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1629 awi_write_1(sc, AWI_CMD, cmd); 1630 if (wflag == AWI_NOWAIT) 1631 return EINPROGRESS; 1632 if ((error = awi_cmd_wait(sc)) != 0) 1633 return error; 1634 status = awi_read_1(sc, AWI_CMD_STATUS); 1635 awi_write_1(sc, AWI_CMD, 0); 1636 switch (status) { 1637 case AWI_STAT_OK: 1638 break; 1639 case AWI_STAT_BADPARM: 1640 return EINVAL; 1641 default: 1642 printf("%s: command %d failed %x\n", 1643 sc->sc_ic.ic_if.if_xname, cmd, status); 1644 return ENXIO; 1645 } 1646 return 0; 1647 } 1648 1649 static int 1650 awi_cmd_wait(struct awi_softc *sc) 1651 { 1652 int i, error = 0; 1653 1654 i = 0; 1655 while (sc->sc_cmd_inprog) { 1656 if (sc->sc_invalid) 1657 return ENXIO; 1658 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1659 printf("%s: failed to access hardware\n", 1660 sc->sc_ic.ic_if.if_xname); 1661 sc->sc_invalid = 1; 1662 return ENXIO; 1663 } 1664 if (sc->sc_cansleep) { 1665 sc->sc_sleep_cnt++; 1666 error = tsleep(sc, PWAIT, "awicmd", 1667 AWI_CMD_TIMEOUT*hz/1000); 1668 sc->sc_sleep_cnt--; 1669 } else { 1670 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1671 awi_cmd_done(sc); 1672 break; 1673 } 1674 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1675 error = EWOULDBLOCK; 1676 else 1677 DELAY(10); 1678 } 1679 if (error) 1680 break; 1681 } 1682 if (error) { 1683 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1684 sc->sc_cmd_inprog, error)); 1685 } 1686 return error; 1687 } 1688 1689 static void 1690 awi_cmd_done(struct awi_softc *sc) 1691 { 1692 u_int8_t cmd, status; 1693 1694 status = awi_read_1(sc, AWI_CMD_STATUS); 1695 if (status == AWI_STAT_IDLE) 1696 return; /* stray interrupt */ 1697 1698 cmd = sc->sc_cmd_inprog; 1699 sc->sc_cmd_inprog = 0; 1700 wakeup(sc); 1701 awi_write_1(sc, AWI_CMD, 0); 1702 1703 if (status != AWI_STAT_OK) { 1704 printf("%s: command %d failed %x\n", 1705 sc->sc_ic.ic_if.if_xname, cmd, status); 1706 sc->sc_substate = AWI_ST_NONE; 1707 return; 1708 } 1709 if (sc->sc_substate != AWI_ST_NONE) 1710 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1711 } 1712 1713 static int 1714 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1715 { 1716 u_int32_t txd, ntxd, frame; 1717 1718 txd = sc->sc_txnext; 1719 frame = txd + AWI_TXD_SIZE; 1720 if (frame + len > sc->sc_txend) 1721 frame = sc->sc_txbase; 1722 ntxd = frame + len; 1723 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1724 ntxd = sc->sc_txbase; 1725 *framep = frame; 1726 *ntxdp = ntxd; 1727 /* 1728 * Determine if there are any room in ring buffer. 1729 * --- send wait, === new data, +++ conflict (ENOBUFS) 1730 * base........................end 1731 * done----txd=====ntxd OK 1732 * --txd=====done++++ntxd-- full 1733 * --txd=====ntxd done-- OK 1734 * ==ntxd done----txd=== OK 1735 * ==done++++ntxd----txd=== full 1736 * ++ntxd txd=====done++ full 1737 */ 1738 if (txd < ntxd) { 1739 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1740 return ENOBUFS; 1741 } else { 1742 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1743 return ENOBUFS; 1744 } 1745 return 0; 1746 } 1747 1748 static int 1749 awi_lock(struct awi_softc *sc) 1750 { 1751 int error = 0; 1752 1753 #ifdef __NetBSD__ 1754 if (curlwp == NULL) 1755 #else 1756 if (curproc == NULL) 1757 #endif 1758 { 1759 /* 1760 * XXX 1761 * Though driver ioctl should be called with context, 1762 * KAME ipv6 stack calls ioctl in interrupt for now. 1763 * We simply abort the request if there are other 1764 * ioctl requests in progress. 1765 */ 1766 if (sc->sc_busy) { 1767 if (sc->sc_invalid) 1768 return ENXIO; 1769 return EWOULDBLOCK; 1770 } 1771 sc->sc_busy = 1; 1772 sc->sc_cansleep = 0; 1773 return 0; 1774 } 1775 while (sc->sc_busy) { 1776 if (sc->sc_invalid) 1777 return ENXIO; 1778 sc->sc_sleep_cnt++; 1779 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1780 sc->sc_sleep_cnt--; 1781 if (error) 1782 return error; 1783 } 1784 sc->sc_busy = 1; 1785 sc->sc_cansleep = 1; 1786 return 0; 1787 } 1788 1789 static void 1790 awi_unlock(struct awi_softc *sc) 1791 { 1792 sc->sc_busy = 0; 1793 sc->sc_cansleep = 0; 1794 if (sc->sc_sleep_cnt) 1795 wakeup(sc); 1796 } 1797 1798 static int 1799 awi_intr_lock(struct awi_softc *sc) 1800 { 1801 u_int8_t status; 1802 int i, retry; 1803 1804 status = 1; 1805 for (retry = 0; retry < 10; retry++) { 1806 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1807 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1808 break; 1809 DELAY(5); 1810 } 1811 if (status != 0) 1812 break; 1813 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1814 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1815 break; 1816 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1817 } 1818 if (status != 0) { 1819 printf("%s: failed to lock interrupt\n", 1820 sc->sc_ic.ic_if.if_xname); 1821 return ENXIO; 1822 } 1823 return 0; 1824 } 1825 1826 static void 1827 awi_intr_unlock(struct awi_softc *sc) 1828 { 1829 1830 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1831 } 1832 1833 static int 1834 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1835 { 1836 struct awi_softc *sc = ic->ic_softc; 1837 struct ieee80211_node *ni; 1838 struct ifnet *ifp = &ic->ic_if; 1839 int error; 1840 u_int8_t newmode; 1841 enum ieee80211_state ostate; 1842 #ifdef AWI_DEBUG 1843 static const char *stname[] = 1844 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1845 static const char *substname[] = 1846 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1847 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1848 #endif /* AWI_DEBUG */ 1849 1850 ostate = ic->ic_state; 1851 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1852 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1853 1854 /* set LED */ 1855 switch (nstate) { 1856 case IEEE80211_S_INIT: 1857 awi_drvstate(sc, AWI_DRV_RESET); 1858 break; 1859 case IEEE80211_S_SCAN: 1860 if (ic->ic_opmode == IEEE80211_M_IBSS || 1861 ic->ic_opmode == IEEE80211_M_AHDEMO) 1862 awi_drvstate(sc, AWI_DRV_ADHSC); 1863 else 1864 awi_drvstate(sc, AWI_DRV_INFSY); 1865 break; 1866 case IEEE80211_S_AUTH: 1867 awi_drvstate(sc, AWI_DRV_INFSY); 1868 break; 1869 case IEEE80211_S_ASSOC: 1870 awi_drvstate(sc, AWI_DRV_INFAUTH); 1871 break; 1872 case IEEE80211_S_RUN: 1873 if (ic->ic_opmode == IEEE80211_M_IBSS || 1874 ic->ic_opmode == IEEE80211_M_AHDEMO) 1875 awi_drvstate(sc, AWI_DRV_ADHSY); 1876 else 1877 awi_drvstate(sc, AWI_DRV_INFASSOC); 1878 break; 1879 } 1880 1881 if (nstate == IEEE80211_S_INIT) { 1882 sc->sc_substate = AWI_ST_NONE; 1883 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1884 return (*sc->sc_newstate)(ic, nstate, arg); 1885 } 1886 1887 /* state transition */ 1888 if (nstate == IEEE80211_S_SCAN) { 1889 /* SCAN substate */ 1890 if (sc->sc_substate == AWI_ST_NONE) { 1891 sc->sc_nstate = nstate; /* next state in transition */ 1892 sc->sc_substate = AWI_ST_SCAN_INIT; 1893 } 1894 switch (sc->sc_substate) { 1895 case AWI_ST_SCAN_INIT: 1896 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1897 switch (ostate) { 1898 case IEEE80211_S_RUN: 1899 /* beacon miss */ 1900 if (ifp->if_flags & IFF_DEBUG) 1901 printf("%s: no recent beacons from %s;" 1902 " rescanning\n", 1903 ifp->if_xname, 1904 ether_sprintf(ic->ic_bss->ni_bssid)); 1905 /* FALLTHRU */ 1906 case IEEE80211_S_AUTH: 1907 case IEEE80211_S_ASSOC: 1908 case IEEE80211_S_INIT: 1909 ieee80211_begin_scan(ifp); 1910 /* FALLTHRU */ 1911 case IEEE80211_S_SCAN: 1912 /* scan next */ 1913 break; 1914 } 1915 if (ic->ic_flags & IEEE80211_F_ASCAN) 1916 newmode = AWI_SCAN_ACTIVE; 1917 else 1918 newmode = AWI_SCAN_PASSIVE; 1919 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1920 sc->sc_mib_mgt.aScan_Mode = newmode; 1921 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1922 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1923 break; 1924 } 1925 /* FALLTHRU */ 1926 case AWI_ST_SCAN_SETMIB: 1927 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1928 if (sc->sc_cmd_inprog) { 1929 if ((error = awi_cmd_wait(sc)) != 0) 1930 break; 1931 } 1932 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1933 ni = ic->ic_bss; 1934 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1935 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1936 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1937 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1938 awi_write_1(sc, AWI_CA_SCAN_SET, 1939 IEEE80211_FH_CHANSET( 1940 ieee80211_chan2ieee(ic, ni->ni_chan))); 1941 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1942 IEEE80211_FH_CHANPAT( 1943 ieee80211_chan2ieee(ic, ni->ni_chan))); 1944 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1945 } else { 1946 awi_write_1(sc, AWI_CA_SCAN_SET, 1947 ieee80211_chan2ieee(ic, ni->ni_chan)); 1948 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1949 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1950 } 1951 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1952 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1953 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1954 != 0) 1955 break; 1956 /* FALLTHRU */ 1957 case AWI_ST_SCAN_SCCMD: 1958 ic->ic_state = nstate; 1959 sc->sc_substate = AWI_ST_NONE; 1960 error = EINPROGRESS; 1961 break; 1962 default: 1963 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1964 stname[nstate], substname[sc->sc_substate])); 1965 sc->sc_substate = AWI_ST_NONE; 1966 error = EIO; 1967 break; 1968 } 1969 goto out; 1970 } 1971 1972 if (ostate == IEEE80211_S_SCAN) { 1973 /* set SSID and channel */ 1974 /* substate */ 1975 if (sc->sc_substate == AWI_ST_NONE) { 1976 sc->sc_nstate = nstate; /* next state in transition */ 1977 sc->sc_substate = AWI_ST_SUB_INIT; 1978 } 1979 ni = ic->ic_bss; 1980 switch (sc->sc_substate) { 1981 case AWI_ST_SUB_INIT: 1982 sc->sc_substate = AWI_ST_SUB_SETSS; 1983 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1984 ni->ni_bssid); 1985 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1986 AWI_ESS_ID_SIZE); 1987 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1988 IEEE80211_ELEMID_SSID; 1989 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1990 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1991 ni->ni_essid, ni->ni_esslen); 1992 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1993 ni->ni_intval); 1994 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1995 AWI_NOWAIT)) != 0) 1996 break; 1997 /* FALLTHRU */ 1998 case AWI_ST_SUB_SETSS: 1999 sc->sc_substate = AWI_ST_SUB_SYNC; 2000 if (sc->sc_cmd_inprog) { 2001 if ((error = awi_cmd_wait(sc)) != 0) 2002 break; 2003 } 2004 sc->sc_cmd_inprog = AWI_CMD_SYNC; 2005 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 2006 awi_write_1(sc, AWI_CA_SYNC_SET, 2007 IEEE80211_FH_CHANSET( 2008 ieee80211_chan2ieee(ic, ni->ni_chan))); 2009 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 2010 IEEE80211_FH_CHANPAT( 2011 ieee80211_chan2ieee(ic, ni->ni_chan))); 2012 awi_write_1(sc, AWI_CA_SYNC_IDX, 2013 ni->ni_fhindex); 2014 awi_write_2(sc, AWI_CA_SYNC_DWELL, 2015 ni->ni_fhdwell); 2016 } else { 2017 awi_write_1(sc, AWI_CA_SYNC_SET, 2018 ieee80211_chan2ieee(ic, ni->ni_chan)); 2019 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 2020 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 2021 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 2022 } 2023 if (ic->ic_flags & IEEE80211_F_SIBSS) 2024 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 2025 else 2026 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 2027 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 2028 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 2029 ni->ni_tstamp, 8); 2030 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 2031 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2032 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 2033 != 0) 2034 break; 2035 /* FALLTHRU */ 2036 case AWI_ST_SUB_SYNC: 2037 sc->sc_substate = AWI_ST_NONE; 2038 if (ic->ic_flags & IEEE80211_F_SIBSS) { 2039 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 2040 AWI_MIB_MGT, AWI_WAIT)) != 0) 2041 break; 2042 IEEE80211_ADDR_COPY(ni->ni_bssid, 2043 &sc->sc_mib_mgt.aCurrent_BSS_ID); 2044 } else { 2045 if (nstate == IEEE80211_S_RUN) { 2046 sc->sc_rx_timer = 10; 2047 ifp->if_timer = 1; 2048 } 2049 } 2050 error = 0; 2051 break; 2052 default: 2053 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 2054 stname[nstate], substname[sc->sc_substate])); 2055 sc->sc_substate = AWI_ST_NONE; 2056 error = EIO; 2057 break; 2058 } 2059 goto out; 2060 } 2061 2062 sc->sc_substate = AWI_ST_NONE; 2063 2064 return (*sc->sc_newstate)(ic, nstate, arg); 2065 out: 2066 if (error != 0) 2067 return error; 2068 return (*sc->sc_newstate)(ic, nstate, arg); 2069 } 2070 2071 static void 2072 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 2073 struct ieee80211_node *ni, 2074 int subtype, int rssi, u_int32_t rstamp) 2075 { 2076 struct awi_softc *sc = ic->ic_softc; 2077 2078 /* probe request is handled by hardware */ 2079 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2080 return; 2081 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 2082 } 2083 2084 static int 2085 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 2086 int type, int arg) 2087 { 2088 struct awi_softc *sc = ic->ic_softc; 2089 2090 /* probe request is handled by hardware */ 2091 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2092 return 0; 2093 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2094 } 2095 2096 static struct mbuf * 2097 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2098 { 2099 struct ieee80211com *ic = &sc->sc_ic; 2100 struct ieee80211_node *ni = ic->ic_bss; 2101 struct ether_header *eh; 2102 struct ieee80211_frame *wh; 2103 2104 if (m->m_len < sizeof(struct ether_header)) { 2105 m = m_pullup(m, sizeof(struct ether_header)); 2106 if (m == NULL) 2107 return NULL; 2108 } 2109 eh = mtod(m, struct ether_header *); 2110 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2111 if (m == NULL) 2112 return NULL; 2113 wh = mtod(m, struct ieee80211_frame *); 2114 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2115 *(u_int16_t *)wh->i_dur = 0; 2116 *(u_int16_t *)wh->i_seq = 2117 htole16(ni->ni_txseq << IEEE80211_SEQ_SEQ_SHIFT); 2118 ni->ni_txseq++; 2119 if (ic->ic_opmode == IEEE80211_M_IBSS || 2120 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2121 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2122 if (sc->sc_adhoc_ap) 2123 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2124 else 2125 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2126 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2127 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2128 } else { 2129 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2130 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2131 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2132 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2133 } 2134 return m; 2135 } 2136 2137 static struct mbuf * 2138 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2139 { 2140 struct ieee80211com *ic = &sc->sc_ic; 2141 struct ether_header eh; 2142 struct ieee80211_frame wh; 2143 struct llc *llc; 2144 2145 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2146 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2147 if (m == NULL) 2148 return NULL; 2149 } 2150 memcpy(&wh, mtod(m, caddr_t), sizeof(wh)); 2151 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2152 return m; 2153 memcpy(&eh, mtod(m, caddr_t) + sizeof(wh), sizeof(eh)); 2154 m_adj(m, sizeof(eh) - sizeof(*llc)); 2155 if (ic->ic_opmode == IEEE80211_M_IBSS || 2156 ic->ic_opmode == IEEE80211_M_AHDEMO) 2157 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2158 memcpy(mtod(m, caddr_t), &wh, sizeof(wh)); 2159 llc = (struct llc *)(mtod(m, caddr_t) + sizeof(wh)); 2160 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2161 llc->llc_control = LLC_UI; 2162 llc->llc_snap.org_code[0] = 0; 2163 llc->llc_snap.org_code[1] = 0; 2164 llc->llc_snap.org_code[2] = 0; 2165 llc->llc_snap.ether_type = eh.ether_type; 2166 return m; 2167 } 2168
Indexes created Sun Oct 19 02:09:48 GMT 2025