awi.c revision 1.78.4.3
1 /* $NetBSD: awi.c,v 1.78.4.3 2009/05/16 10:41:22 yamt 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /* 32 * Driver for AMD 802.11 firmware. 33 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 34 * 35 * More-or-less a generic ethernet-like if driver, with 802.11 gorp added. 36 */ 37 38 /* 39 * todo: 40 * - flush tx queue on resynch. 41 * - clear oactive on "down". 42 * - rewrite copy-into-mbuf code 43 * - mgmt state machine gets stuck retransmitting assoc requests. 44 * - multicast filter. 45 * - fix device reset so it's more likely to work 46 * - show status goo through ifmedia. 47 * 48 * more todo: 49 * - deal with more 802.11 frames. 50 * - send reassoc request 51 * - deal with reassoc response 52 * - send/deal with disassociation 53 * - deal with "full" access points (no room for me). 54 * - power save mode 55 * 56 * later: 57 * - SSID preferences 58 * - need ioctls for poking at the MIBs 59 * - implement ad-hoc mode (including bss creation). 60 * - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?) 61 * (focus on inf. mode since that will be needed for ietf) 62 * - deal with DH vs. FH versions of the card 63 * - deal with faster cards (2mb/s) 64 * - ?WEP goo (mmm, rc4) (it looks not particularly useful). 65 * - ifmedia revision. 66 * - common 802.11 mibish things. 67 * - common 802.11 media layer. 68 */ 69 70 /* 71 * Driver for AMD 802.11 PCnetMobile firmware. 72 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 73 * 74 * The initial version of the driver was written by 75 * Bill Sommerfeld <sommerfeld (at) NetBSD.org>. 76 * Then the driver module completely rewritten to support cards with DS phy 77 * and to support adhoc mode by Atsushi Onoe <onoe (at) NetBSD.org> 78 */ 79 80 #include <sys/cdefs.h> 81 #ifdef __NetBSD__ 82 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.78.4.3 2009/05/16 10:41:22 yamt Exp $"); 83 #endif 84 #ifdef __FreeBSD__ 85 __FBSDID("$FreeBSD: src/sys/dev/awi/awi.c,v 1.30 2004/01/15 13:30:06 onoe Exp $"); 86 #endif 87 88 #include "opt_inet.h" 89 #ifdef __NetBSD__ 90 #include "bpfilter.h" 91 #endif 92 #ifdef __FreeBSD__ 93 #define NBPFILTER 1 94 #endif 95 96 #include <sys/param.h> 97 #include <sys/systm.h> 98 #include <sys/kernel.h> 99 #include <sys/mbuf.h> 100 #include <sys/malloc.h> 101 #include <sys/proc.h> 102 #include <sys/socket.h> 103 #include <sys/sockio.h> 104 #include <sys/errno.h> 105 #include <sys/endian.h> 106 #ifdef __FreeBSD__ 107 #include <sys/bus.h> 108 #endif 109 #ifdef __NetBSD__ 110 #include <sys/device.h> 111 #endif 112 113 #include <net/if.h> 114 #include <net/if_dl.h> 115 #ifdef __NetBSD__ 116 #include <net/if_ether.h> 117 #endif 118 #ifdef __FreeBSD__ 119 #include <net/ethernet.h> 120 #include <net/if_arp.h> 121 #endif 122 #include <net/if_media.h> 123 #include <net/if_llc.h> 124 125 #include <net80211/ieee80211_netbsd.h> 126 #include <net80211/ieee80211_var.h> 127 128 #if NBPFILTER > 0 129 #include <net/bpf.h> 130 #endif 131 132 #include <sys/cpu.h> 133 #include <sys/bus.h> 134 135 #ifdef __NetBSD__ 136 #include <dev/ic/am79c930reg.h> 137 #include <dev/ic/am79c930var.h> 138 #include <dev/ic/awireg.h> 139 #include <dev/ic/awivar.h> 140 #endif 141 #ifdef __FreeBSD__ 142 #include <dev/awi/am79c930reg.h> 143 #include <dev/awi/am79c930var.h> 144 #include <dev/awi/awireg.h> 145 #include <dev/awi/awivar.h> 146 #endif 147 148 #ifdef __FreeBSD__ 149 static void awi_init0(void *); 150 #endif 151 static int awi_init(struct ifnet *); 152 static void awi_stop(struct ifnet *, int); 153 static void awi_start(struct ifnet *); 154 static void awi_watchdog(struct ifnet *); 155 static int awi_ioctl(struct ifnet *, u_long, void *); 156 static int awi_media_change(struct ifnet *); 157 static void awi_media_status(struct ifnet *, struct ifmediareq *); 158 static int awi_mode_init(struct awi_softc *); 159 static void awi_rx_int(struct awi_softc *); 160 static void awi_tx_int(struct awi_softc *); 161 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 162 static int awi_hw_init(struct awi_softc *); 163 static int awi_init_mibs(struct awi_softc *); 164 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 165 static int awi_cmd(struct awi_softc *, u_int8_t, int); 166 static int awi_cmd_wait(struct awi_softc *); 167 static void awi_cmd_done(struct awi_softc *); 168 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 169 static int awi_lock(struct awi_softc *); 170 static void awi_unlock(struct awi_softc *); 171 static int awi_intr_lock(struct awi_softc *); 172 static void awi_intr_unlock(struct awi_softc *); 173 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 174 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 175 struct ieee80211_node *, int, int, u_int32_t); 176 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 177 int); 178 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 179 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 180 181 /* unaligned little endian access */ 182 #define LE_READ_2(p) \ 183 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 184 #define LE_READ_4(p) \ 185 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 186 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 187 #define LE_WRITE_2(p, v) \ 188 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 189 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 190 #define LE_WRITE_4(p, v) \ 191 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 192 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 193 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 194 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 195 196 struct awi_chanset awi_chanset[] = { 197 /* PHY type domain min max def */ 198 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 199 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 200 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 201 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 202 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 203 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 204 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 205 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 206 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 207 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 208 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 209 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 210 { 0, 0, 0, 0, 0 } 211 }; 212 213 #ifdef AWI_DEBUG 214 int awi_debug = 0; 215 216 #define DPRINTF(X) if (awi_debug) printf X 217 #define DPRINTF2(X) if (awi_debug > 1) printf X 218 #else 219 #define DPRINTF(X) 220 #define DPRINTF2(X) 221 #endif 222 223 int 224 awi_attach(struct awi_softc *sc) 225 { 226 struct ieee80211com *ic = &sc->sc_ic; 227 struct ifnet *ifp = &sc->sc_if; 228 int s, i, error, nrate; 229 int mword; 230 enum ieee80211_phymode mode; 231 232 s = splnet(); 233 sc->sc_busy = 1; 234 sc->sc_attached = 0; 235 sc->sc_substate = AWI_ST_NONE; 236 if ((error = awi_hw_init(sc)) != 0) { 237 sc->sc_invalid = 1; 238 splx(s); 239 return error; 240 } 241 error = awi_init_mibs(sc); 242 if (error != 0) { 243 sc->sc_invalid = 1; 244 splx(s); 245 return error; 246 } 247 ifp->if_softc = sc; 248 ifp->if_flags = 249 #ifdef IFF_NOTRAILERS 250 IFF_NOTRAILERS | 251 #endif 252 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 253 ifp->if_ioctl = awi_ioctl; 254 ifp->if_start = awi_start; 255 ifp->if_watchdog = awi_watchdog; 256 #ifdef __NetBSD__ 257 ifp->if_init = awi_init; 258 ifp->if_stop = awi_stop; 259 IFQ_SET_READY(&ifp->if_snd); 260 memcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 261 #endif 262 #ifdef __FreeBSD__ 263 ifp->if_init = awi_init0; 264 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN; 265 if_initname(ifp, device_get_name(sc->sc_dev), 266 device_get_unit(sc->sc_dev)); 267 #endif 268 269 ic->ic_ifp = ifp; 270 ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP; 271 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 272 ic->ic_phytype = IEEE80211_T_FH; 273 mode = IEEE80211_MODE_FH; 274 } else { 275 ic->ic_phytype = IEEE80211_T_DS; 276 ic->ic_caps |= IEEE80211_C_AHDEMO; 277 mode = IEEE80211_MODE_11B; 278 } 279 ic->ic_opmode = IEEE80211_M_STA; 280 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 281 memcpy(ic->ic_sup_rates[mode].rs_rates, 282 sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 283 ic->ic_sup_rates[mode].rs_nrates = nrate; 284 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 285 286 printf("%s: IEEE802.11 %s (firmware %s)\n", ifp->if_xname, 287 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 288 printf("%s: 802.11 address: %s\n", ifp->if_xname, 289 ether_sprintf(ic->ic_myaddr)); 290 291 #ifdef __NetBSD__ 292 if_attach(ifp); 293 #endif 294 ieee80211_ifattach(ic); 295 296 sc->sc_newstate = ic->ic_newstate; 297 ic->ic_newstate = awi_newstate; 298 299 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 300 ic->ic_recv_mgmt = awi_recv_mgmt; 301 302 sc->sc_send_mgmt = ic->ic_send_mgmt; 303 ic->ic_send_mgmt = awi_send_mgmt; 304 305 ieee80211_media_init(ic, awi_media_change, awi_media_status); 306 307 /* Melco compatibility mode. */ 308 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 309 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 310 ADD(IFM_AUTO, IFM_FLAG0); 311 312 for (i = 0; i < nrate; i++) { 313 mword = ieee80211_rate2media(ic, 314 ic->ic_sup_rates[mode].rs_rates[i], mode); 315 if (mword == 0) 316 continue; 317 ADD(mword, IFM_FLAG0); 318 } 319 #undef ADD 320 321 #ifdef __NetBSD__ 322 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 323 printf("%s: WARNING: unable to establish shutdown hook\n", 324 ifp->if_xname); 325 if ((sc->sc_powerhook = 326 powerhook_establish(ifp->if_xname, awi_power, sc)) == NULL) 327 printf("%s: WARNING: unable to establish power hook\n", 328 ifp->if_xname); 329 #endif 330 sc->sc_attached = 1; 331 splx(s); 332 333 /* ready to accept ioctl */ 334 awi_unlock(sc); 335 336 return 0; 337 } 338 339 int 340 awi_detach(struct awi_softc *sc) 341 { 342 struct ieee80211com *ic = &sc->sc_ic; 343 struct ifnet *ifp = &sc->sc_if; 344 int s; 345 346 if (!sc->sc_attached) 347 return 0; 348 349 s = splnet(); 350 sc->sc_invalid = 1; 351 awi_stop(ifp, 1); 352 353 while (sc->sc_sleep_cnt > 0) { 354 wakeup(sc); 355 (void)tsleep(sc, PWAIT, "awidet", 1); 356 } 357 sc->sc_attached = 0; 358 ieee80211_ifdetach(ic); 359 #ifdef __NetBSD__ 360 if_detach(ifp); 361 shutdownhook_disestablish(sc->sc_sdhook); 362 powerhook_disestablish(sc->sc_powerhook); 363 #endif 364 splx(s); 365 return 0; 366 } 367 368 #ifdef __NetBSD__ 369 int 370 awi_activate(device_t self, enum devact act) 371 { 372 struct awi_softc *sc = (struct awi_softc *)self; 373 struct ifnet *ifp = &sc->sc_if; 374 int s, error = 0; 375 376 s = splnet(); 377 switch (act) { 378 case DVACT_ACTIVATE: 379 error = EOPNOTSUPP; 380 break; 381 case DVACT_DEACTIVATE: 382 sc->sc_invalid = 1; 383 if_deactivate(ifp); 384 break; 385 } 386 splx(s); 387 return error; 388 } 389 390 void 391 awi_power(int why, void *arg) 392 { 393 struct awi_softc *sc = arg; 394 struct ifnet *ifp = &sc->sc_if; 395 int s; 396 int ocansleep; 397 398 DPRINTF(("awi_power: %d\n", why)); 399 s = splnet(); 400 ocansleep = sc->sc_cansleep; 401 sc->sc_cansleep = 0; 402 switch (why) { 403 case PWR_SUSPEND: 404 case PWR_STANDBY: 405 awi_stop(ifp, 1); 406 break; 407 case PWR_RESUME: 408 if (ifp->if_flags & IFF_UP) { 409 awi_init(ifp); 410 (void)awi_intr(sc); /* make sure */ 411 } 412 break; 413 case PWR_SOFTSUSPEND: 414 case PWR_SOFTSTANDBY: 415 case PWR_SOFTRESUME: 416 break; 417 } 418 sc->sc_cansleep = ocansleep; 419 splx(s); 420 } 421 #endif /* __NetBSD__ */ 422 423 void 424 awi_shutdown(void *arg) 425 { 426 struct awi_softc *sc = arg; 427 struct ifnet *ifp = &sc->sc_if; 428 429 if (sc->sc_attached) 430 awi_stop(ifp, 1); 431 } 432 433 int 434 awi_intr(void *arg) 435 { 436 struct awi_softc *sc = arg; 437 u_int16_t status; 438 int handled = 0, ocansleep; 439 #ifdef AWI_DEBUG 440 static const char *intname[] = { 441 "CMD", "RX", "TX", "SCAN_CMPLT", 442 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 443 "TXDATA", "TXBCAST", "TXPS", "TXCF", 444 "TXMGT", "#13", "RXDATA", "RXMGT" 445 }; 446 #endif 447 448 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) { 449 DPRINTF(("awi_intr: stray interrupt: " 450 "enabled %d enab_intr %d invalid %d\n", 451 sc->sc_enabled, sc->sc_enab_intr, sc->sc_invalid)); 452 return 0; 453 } 454 455 am79c930_gcr_setbits(&sc->sc_chip, 456 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 457 awi_write_1(sc, AWI_DIS_PWRDN, 1); 458 ocansleep = sc->sc_cansleep; 459 sc->sc_cansleep = 0; 460 461 for (;;) { 462 if (awi_intr_lock(sc) != 0) 463 break; 464 status = awi_read_1(sc, AWI_INTSTAT); 465 awi_write_1(sc, AWI_INTSTAT, 0); 466 awi_write_1(sc, AWI_INTSTAT, 0); 467 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 468 awi_write_1(sc, AWI_INTSTAT2, 0); 469 DELAY(10); 470 awi_intr_unlock(sc); 471 if (!sc->sc_cmd_inprog) 472 status &= ~AWI_INT_CMD; /* make sure */ 473 if (status == 0) 474 break; 475 #ifdef AWI_DEBUG 476 if (awi_debug > 1) { 477 int i; 478 479 printf("awi_intr: status 0x%04x", status); 480 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 481 i++) { 482 if (status & (1 << i)) 483 printf(" %s", intname[i]); 484 } 485 printf("\n"); 486 } 487 #endif 488 handled = 1; 489 if (status & AWI_INT_RX) 490 awi_rx_int(sc); 491 if (status & AWI_INT_TX) 492 awi_tx_int(sc); 493 if (status & AWI_INT_CMD) 494 awi_cmd_done(sc); 495 if (status & AWI_INT_SCAN_CMPLT) { 496 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 497 sc->sc_substate == AWI_ST_NONE) 498 ieee80211_next_scan(&sc->sc_ic); 499 } 500 } 501 sc->sc_cansleep = ocansleep; 502 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 503 awi_write_1(sc, AWI_DIS_PWRDN, 0); 504 return handled; 505 } 506 507 #ifdef __FreeBSD__ 508 static void 509 awi_init0(void *arg) 510 { 511 struct awi_softc *sc = arg; 512 513 (void)awi_init(&sc->sc_if); 514 } 515 #endif 516 517 static int 518 awi_init(struct ifnet *ifp) 519 { 520 struct awi_softc *sc = ifp->if_softc; 521 struct ieee80211com *ic = &sc->sc_ic; 522 struct ieee80211_node *ni = ic->ic_bss; 523 struct ieee80211_rateset *rs; 524 int error, rate, i; 525 526 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 527 if (sc->sc_enabled) { 528 awi_stop(ifp, 0); 529 } else { 530 if (sc->sc_enable) 531 (*sc->sc_enable)(sc); 532 sc->sc_enabled = 1; 533 if ((error = awi_hw_init(sc)) != 0) { 534 if (sc->sc_disable) 535 (*sc->sc_disable)(sc); 536 sc->sc_enabled = 0; 537 return error; 538 } 539 } 540 ic->ic_state = IEEE80211_S_INIT; 541 542 ic->ic_flags &= ~IEEE80211_F_IBSSON; 543 switch (ic->ic_opmode) { 544 case IEEE80211_M_STA: 545 sc->sc_mib_local.Network_Mode = 1; 546 sc->sc_mib_local.Acting_as_AP = 0; 547 break; 548 case IEEE80211_M_IBSS: 549 ic->ic_flags |= IEEE80211_F_IBSSON; 550 /* FALLTHRU */ 551 case IEEE80211_M_AHDEMO: 552 sc->sc_mib_local.Network_Mode = 0; 553 sc->sc_mib_local.Acting_as_AP = 0; 554 break; 555 case IEEE80211_M_HOSTAP: 556 sc->sc_mib_local.Network_Mode = 1; 557 sc->sc_mib_local.Acting_as_AP = 1; 558 break; 559 case IEEE80211_M_MONITOR: 560 return ENODEV; 561 } 562 #if 0 563 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 564 #endif 565 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 566 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 567 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 568 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 569 ic->ic_des_esslen); 570 571 /* configure basic rate */ 572 if (ic->ic_phytype == IEEE80211_T_FH) 573 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 574 else 575 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 576 if (ic->ic_fixed_rate != -1) { 577 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 578 } else { 579 rate = 0; 580 for (i = 0; i < rs->rs_nrates; i++) { 581 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 582 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 583 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 584 } 585 } 586 rate *= 5; 587 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 588 589 if ((error = awi_mode_init(sc)) != 0) { 590 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 591 awi_stop(ifp, 1); 592 return error; 593 } 594 595 /* start transmitter */ 596 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 597 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 598 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 599 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 600 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 601 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 602 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 603 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 604 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 605 awi_write_4(sc, AWI_CA_TX_MGT, 0); 606 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 607 awi_write_4(sc, AWI_CA_TX_PS, 0); 608 awi_write_4(sc, AWI_CA_TX_CF, 0); 609 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 610 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 611 awi_stop(ifp, 1); 612 return error; 613 } 614 615 /* start receiver */ 616 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 617 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 618 awi_stop(ifp, 1); 619 return error; 620 } 621 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 622 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 623 624 ifp->if_flags |= IFF_RUNNING; 625 ifp->if_flags &= ~IFF_OACTIVE; 626 ic->ic_state = IEEE80211_S_INIT; 627 628 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 629 ic->ic_opmode == IEEE80211_M_HOSTAP) { 630 ni->ni_chan = ic->ic_ibss_chan; 631 ni->ni_intval = ic->ic_lintval; 632 ni->ni_rssi = 0; 633 ni->ni_rstamp = 0; 634 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 635 ni->ni_rates = 636 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 637 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 638 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 639 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 640 ni->ni_esslen = ic->ic_des_esslen; 641 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 642 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 643 if (ic->ic_phytype == IEEE80211_T_FH) { 644 ni->ni_fhdwell = 200; /* XXX */ 645 ni->ni_fhindex = 1; 646 } 647 } else { 648 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 649 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 650 ni->ni_esslen = 0; 651 } 652 if (ic->ic_flags & IEEE80211_F_PRIVACY) 653 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 654 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 655 ic->ic_flags |= IEEE80211_F_SIBSS; 656 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 657 sc->sc_substate = AWI_ST_NONE; 658 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 659 } else { 660 /* XXX check sc->sc_cur_chan */ 661 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 662 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 663 } 664 return 0; 665 } 666 667 static void 668 awi_stop(struct ifnet *ifp, int disable) 669 { 670 struct awi_softc *sc = ifp->if_softc; 671 672 if (!sc->sc_enabled) 673 return; 674 675 DPRINTF(("awi_stop(%d)\n", disable)); 676 677 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 678 679 if (!sc->sc_invalid) { 680 if (sc->sc_cmd_inprog) 681 (void)awi_cmd_wait(sc); 682 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 683 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 684 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 685 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 686 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 687 awi_write_1(sc, AWI_CA_FTX_PS, 0); 688 awi_write_1(sc, AWI_CA_FTX_CF, 0); 689 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 690 } 691 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 692 ifp->if_timer = 0; 693 sc->sc_tx_timer = sc->sc_rx_timer = 0; 694 if (sc->sc_rxpend != NULL) { 695 m_freem(sc->sc_rxpend); 696 sc->sc_rxpend = NULL; 697 } 698 IFQ_PURGE(&ifp->if_snd); 699 700 if (disable) { 701 if (!sc->sc_invalid) 702 am79c930_gcr_setbits(&sc->sc_chip, 703 AM79C930_GCR_CORESET); 704 if (sc->sc_disable) 705 (*sc->sc_disable)(sc); 706 sc->sc_enabled = 0; 707 } 708 } 709 710 static void 711 awi_start(struct ifnet *ifp) 712 { 713 struct awi_softc *sc = ifp->if_softc; 714 struct ieee80211com *ic = &sc->sc_ic; 715 struct ether_header *eh; 716 struct ieee80211_node *ni; 717 struct ieee80211_frame *wh; 718 struct mbuf *m, *m0; 719 int len, dowep; 720 u_int32_t txd, frame, ntxd; 721 u_int8_t rate; 722 723 if (!sc->sc_enabled || sc->sc_invalid) 724 return; 725 726 for (;;) { 727 txd = sc->sc_txnext; 728 IF_POLL(&ic->ic_mgtq, m0); 729 dowep = 0; 730 if (m0 != NULL) { 731 len = m0->m_pkthdr.len; 732 if (awi_next_txd(sc, len, &frame, &ntxd)) { 733 ifp->if_flags |= IFF_OACTIVE; 734 break; 735 } 736 IF_DEQUEUE(&ic->ic_mgtq, m0); 737 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 738 } else { 739 if (ic->ic_state != IEEE80211_S_RUN) 740 break; 741 IFQ_POLL(&ifp->if_snd, m0); 742 if (m0 == NULL) 743 break; 744 /* 745 * Need to calculate the real length to determine 746 * if the transmit buffer has a room for the packet. 747 */ 748 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 749 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 750 len += sizeof(struct llc) - 751 sizeof(struct ether_header); 752 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 753 dowep = 1; 754 len += IEEE80211_WEP_IVLEN + 755 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 756 } 757 if (awi_next_txd(sc, len, &frame, &ntxd)) { 758 ifp->if_flags |= IFF_OACTIVE; 759 break; 760 } 761 IFQ_DEQUEUE(&ifp->if_snd, m0); 762 ifp->if_opackets++; 763 #if NBPFILTER > 0 764 if (ifp->if_bpf) 765 bpf_mtap(ifp->if_bpf, m0); 766 #endif 767 eh = mtod(m0, struct ether_header *); 768 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 769 if (ni == NULL) { 770 ifp->if_oerrors++; 771 continue; 772 } 773 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 774 m0 = awi_ether_encap(sc, m0); 775 else { 776 m0 = ieee80211_encap(ic, m0, ni); 777 } 778 if (m0 == NULL) { 779 ieee80211_free_node(ni); 780 ifp->if_oerrors++; 781 continue; 782 } 783 wh = mtod(m0, struct ieee80211_frame *); 784 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 785 (ic->ic_opmode == IEEE80211_M_HOSTAP || 786 ic->ic_opmode == IEEE80211_M_IBSS) && 787 sc->sc_adhoc_ap == 0 && 788 (ifp->if_flags & IFF_LINK0) == 0 && 789 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 790 IEEE80211_FC0_TYPE_DATA) { 791 m_freem(m0); 792 ieee80211_free_node(ni); 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 ((ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 803 m_freem(m0); 804 ieee80211_free_node(ni); 805 ifp->if_oerrors++; 806 continue; 807 } 808 } 809 ieee80211_free_node(ni); 810 #ifdef DIAGNOSTIC 811 if (m0->m_pkthdr.len != len) { 812 printf("%s: length %d should be %d\n", 813 sc->sc_if.if_xname, m0->m_pkthdr.len, len); 814 m_freem(m0); 815 ifp->if_oerrors++; 816 continue; 817 } 818 #endif 819 820 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 821 ieee80211_dump_pkt(m0->m_data, m0->m_len, 822 ic->ic_bss->ni_rates. 823 rs_rates[ic->ic_bss->ni_txrate] & 824 IEEE80211_RATE_VAL, -1); 825 826 for (m = m0, len = 0; m != NULL; m = m->m_next) { 827 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 828 m->m_len); 829 len += m->m_len; 830 } 831 m_freem(m0); 832 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 833 IEEE80211_RATE_VAL) * 5; 834 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 835 awi_write_4(sc, txd + AWI_TXD_START, frame); 836 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 837 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 838 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 839 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 840 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 841 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 842 sc->sc_txnext = ntxd; 843 844 sc->sc_tx_timer = 5; 845 ifp->if_timer = 1; 846 } 847 } 848 849 static void 850 awi_watchdog(struct ifnet *ifp) 851 { 852 struct awi_softc *sc = ifp->if_softc; 853 u_int32_t prevdone; 854 int ocansleep; 855 856 ifp->if_timer = 0; 857 if (!sc->sc_enabled || sc->sc_invalid) 858 return; 859 860 ocansleep = sc->sc_cansleep; 861 sc->sc_cansleep = 0; 862 if (sc->sc_tx_timer) { 863 if (--sc->sc_tx_timer == 0) { 864 printf("%s: device timeout\n", ifp->if_xname); 865 prevdone = sc->sc_txdone; 866 awi_tx_int(sc); 867 if (sc->sc_txdone == prevdone) { 868 ifp->if_oerrors++; 869 awi_init(ifp); 870 goto out; 871 } 872 } 873 ifp->if_timer = 1; 874 } 875 if (sc->sc_rx_timer) { 876 if (--sc->sc_rx_timer == 0) { 877 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 878 ieee80211_new_state(&sc->sc_ic, 879 IEEE80211_S_SCAN, -1); 880 goto out; 881 } 882 } else 883 ifp->if_timer = 1; 884 } 885 /* TODO: rate control */ 886 ieee80211_watchdog(&sc->sc_ic); 887 out: 888 sc->sc_cansleep = ocansleep; 889 } 890 891 static int 892 awi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 893 { 894 struct awi_softc *sc = ifp->if_softc; 895 struct ifreq *ifr = (struct ifreq *)data; 896 int s, error; 897 898 s = splnet(); 899 /* serialize ioctl, since we may sleep */ 900 if ((error = awi_lock(sc)) != 0) 901 goto cantlock; 902 903 switch (cmd) { 904 case SIOCSIFFLAGS: 905 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 906 break; 907 if (ifp->if_flags & IFF_UP) { 908 if (sc->sc_enabled) { 909 /* 910 * To avoid rescanning another access point, 911 * do not call awi_init() here. Instead, 912 * only reflect promisc mode settings. 913 */ 914 error = awi_mode_init(sc); 915 } else 916 error = awi_init(ifp); 917 } else if (sc->sc_enabled) 918 awi_stop(ifp, 1); 919 break; 920 case SIOCSIFMEDIA: 921 case SIOCGIFMEDIA: 922 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 923 break; 924 case SIOCADDMULTI: 925 case SIOCDELMULTI: 926 #ifdef __FreeBSD__ 927 error = ENETRESET; /* XXX */ 928 #else 929 error = ether_ioctl(ifp, cmd, data); 930 #endif 931 if (error == ENETRESET) { 932 /* do not rescan */ 933 if (ifp->if_flags & IFF_RUNNING) 934 error = awi_mode_init(sc); 935 else 936 error = 0; 937 } 938 break; 939 default: 940 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 941 if (error == ENETRESET) { 942 if (sc->sc_enabled) 943 error = awi_init(ifp); 944 else 945 error = 0; 946 } 947 break; 948 } 949 awi_unlock(sc); 950 cantlock: 951 splx(s); 952 return error; 953 } 954 955 /* 956 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 957 * 958 * TBD factor with ieee80211_media_change 959 */ 960 static int 961 awi_media_change(struct ifnet *ifp) 962 { 963 struct awi_softc *sc = ifp->if_softc; 964 struct ieee80211com *ic = &sc->sc_ic; 965 struct ifmedia_entry *ime; 966 enum ieee80211_opmode newmode; 967 int i, rate, newadhoc_ap, error = 0; 968 969 ime = ic->ic_media.ifm_cur; 970 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 971 i = -1; 972 } else { 973 struct ieee80211_rateset *rs = 974 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 975 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 976 rate = ieee80211_media2rate(ime->ifm_media); 977 if (rate == 0) 978 return EINVAL; 979 for (i = 0; i < rs->rs_nrates; i++) { 980 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 981 break; 982 } 983 if (i == rs->rs_nrates) 984 return EINVAL; 985 } 986 if (ic->ic_fixed_rate != i) { 987 ic->ic_fixed_rate = i; 988 error = ENETRESET; 989 } 990 991 /* 992 * combination of mediaopt 993 * 994 * hostap adhoc flag0 opmode adhoc_ap comment 995 * + - - HOSTAP 0 HostAP 996 * - + - IBSS 0 IBSS 997 * - + + AHDEMO 0 WaveLAN adhoc 998 * - - + IBSS 1 Melco old Sta 999 * also LINK0 1000 * - - - STA 0 Infra Station 1001 */ 1002 newadhoc_ap = 0; 1003 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 1004 newmode = IEEE80211_M_HOSTAP; 1005 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 1006 if (ic->ic_phytype == IEEE80211_T_DS && 1007 (ime->ifm_media & IFM_FLAG0)) 1008 newmode = IEEE80211_M_AHDEMO; 1009 else 1010 newmode = IEEE80211_M_IBSS; 1011 } else if (ime->ifm_media & IFM_FLAG0) { 1012 newmode = IEEE80211_M_IBSS; 1013 newadhoc_ap = 1; 1014 } else 1015 newmode = IEEE80211_M_STA; 1016 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 1017 ic->ic_opmode = newmode; 1018 sc->sc_adhoc_ap = newadhoc_ap; 1019 error = ENETRESET; 1020 } 1021 1022 if (error == ENETRESET) { 1023 if (sc->sc_enabled) 1024 error = awi_init(ifp); 1025 else 1026 error = 0; 1027 } 1028 return error; 1029 } 1030 1031 static void 1032 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1033 { 1034 struct awi_softc *sc = ifp->if_softc; 1035 struct ieee80211com *ic = &sc->sc_ic; 1036 int rate; 1037 enum ieee80211_phymode mode; 1038 1039 imr->ifm_status = IFM_AVALID; 1040 if (ic->ic_state == IEEE80211_S_RUN) 1041 imr->ifm_status |= IFM_ACTIVE; 1042 imr->ifm_active = IFM_IEEE80211; 1043 if (ic->ic_phytype == IEEE80211_T_FH) 1044 mode = IEEE80211_MODE_FH; 1045 else 1046 mode = IEEE80211_MODE_11B; 1047 if (ic->ic_state == IEEE80211_S_RUN) { 1048 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 1049 IEEE80211_RATE_VAL; 1050 } else { 1051 if (ic->ic_fixed_rate == -1) 1052 rate = 0; 1053 else 1054 rate = ic->ic_sup_rates[mode]. 1055 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 1056 } 1057 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 1058 switch (ic->ic_opmode) { 1059 case IEEE80211_M_MONITOR: /* we should never reach here */ 1060 break; 1061 case IEEE80211_M_STA: 1062 break; 1063 case IEEE80211_M_IBSS: 1064 if (sc->sc_adhoc_ap) 1065 imr->ifm_active |= IFM_FLAG0; 1066 else 1067 imr->ifm_active |= IFM_IEEE80211_ADHOC; 1068 break; 1069 case IEEE80211_M_AHDEMO: 1070 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1071 break; 1072 case IEEE80211_M_HOSTAP: 1073 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1074 break; 1075 } 1076 } 1077 1078 static int 1079 awi_mode_init(struct awi_softc *sc) 1080 { 1081 struct ifnet *ifp = &sc->sc_if; 1082 int n, error; 1083 #ifdef __FreeBSD__ 1084 struct ifmultiaddr *ifma; 1085 #else 1086 struct ether_multi *enm; 1087 struct ether_multistep step; 1088 #endif 1089 1090 /* reinitialize muticast filter */ 1091 n = 0; 1092 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1093 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1094 (ifp->if_flags & IFF_PROMISC)) { 1095 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1096 goto set_mib; 1097 } 1098 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1099 #ifdef __FreeBSD__ 1100 if (ifp->if_amcount != 0) 1101 goto set_mib; 1102 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1103 if (ifma->ifma_addr->sa_family != AF_LINK) 1104 continue; 1105 if (n == AWI_GROUP_ADDR_SIZE) 1106 goto set_mib; 1107 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1108 CLLADDR(satocsdl(ifma->ifma_addr))); 1109 n++; 1110 } 1111 #else 1112 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 1113 while (enm != NULL) { 1114 if (n == AWI_GROUP_ADDR_SIZE || 1115 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1116 goto set_mib; 1117 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1118 enm->enm_addrlo); 1119 n++; 1120 ETHER_NEXT_MULTI(step, enm); 1121 } 1122 #endif 1123 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1124 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1125 IEEE80211_ADDR_LEN); 1126 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1127 1128 set_mib: 1129 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1130 ifp->if_flags &= ~IFF_ALLMULTI; 1131 else 1132 ifp->if_flags |= IFF_ALLMULTI; 1133 sc->sc_mib_mgt.Wep_Required = 1134 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1135 1136 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1137 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1138 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1139 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1140 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1141 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1142 return error; 1143 } 1144 return 0; 1145 } 1146 1147 static void 1148 awi_rx_int(struct awi_softc *sc) 1149 { 1150 struct ieee80211com *ic = &sc->sc_ic; 1151 struct ifnet *ifp = &sc->sc_if; 1152 struct ieee80211_frame_min *wh; 1153 struct ieee80211_node *ni; 1154 u_int8_t state, rate, rssi; 1155 u_int16_t len; 1156 u_int32_t frame, next, rstamp, rxoff; 1157 struct mbuf *m; 1158 1159 rxoff = sc->sc_rxdoff; 1160 for (;;) { 1161 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1162 if (state & AWI_RXD_ST_OWN) 1163 break; 1164 if (!(state & AWI_RXD_ST_CONSUMED)) { 1165 if (sc->sc_substate != AWI_ST_NONE) 1166 goto rx_next; 1167 if (state & AWI_RXD_ST_RXERROR) { 1168 ifp->if_ierrors++; 1169 goto rx_next; 1170 } 1171 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1172 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1173 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1174 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1175 0x7fff; 1176 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1177 m = awi_devget(sc, frame, len); 1178 if (m == NULL) { 1179 ifp->if_ierrors++; 1180 goto rx_next; 1181 } 1182 if (state & AWI_RXD_ST_LF) { 1183 /* TODO check my bss */ 1184 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1185 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1186 sc->sc_rx_timer = 10; 1187 ifp->if_timer = 1; 1188 } 1189 if ((ifp->if_flags & IFF_DEBUG) && 1190 (ifp->if_flags & IFF_LINK2)) 1191 ieee80211_dump_pkt(m->m_data, m->m_len, 1192 rate / 5, rssi); 1193 if ((ifp->if_flags & IFF_LINK0) || 1194 sc->sc_adhoc_ap) 1195 m = awi_ether_modcap(sc, m); 1196 else 1197 m = m_pullup(m, sizeof(*wh)); 1198 if (m == NULL) { 1199 ifp->if_ierrors++; 1200 goto rx_next; 1201 } 1202 wh = mtod(m, struct ieee80211_frame_min *); 1203 ni = ieee80211_find_rxnode(ic, wh); 1204 ieee80211_input(ic, m, ni, rssi, rstamp); 1205 /* 1206 * The frame may have caused the 1207 * node to be marked for reclamation 1208 * (e.g. in response to a DEAUTH 1209 * message) so use release_node here 1210 * instead of unref_node. 1211 */ 1212 ieee80211_free_node(ni); 1213 } else 1214 sc->sc_rxpend = m; 1215 rx_next: 1216 state |= AWI_RXD_ST_CONSUMED; 1217 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1218 } 1219 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1220 if (next & AWI_RXD_NEXT_LAST) 1221 break; 1222 /* make sure the next pointer is correct */ 1223 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1224 break; 1225 state |= AWI_RXD_ST_OWN; 1226 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1227 rxoff = next & 0x7fff; 1228 } 1229 sc->sc_rxdoff = rxoff; 1230 } 1231 1232 static void 1233 awi_tx_int(struct awi_softc *sc) 1234 { 1235 struct ifnet *ifp = &sc->sc_if; 1236 u_int8_t flags; 1237 1238 while (sc->sc_txdone != sc->sc_txnext) { 1239 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1240 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1241 break; 1242 if (flags & AWI_TXD_ST_ERROR) 1243 ifp->if_oerrors++; 1244 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1245 0x7fff; 1246 } 1247 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1248 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1249 sc->sc_tx_timer = 0; 1250 ifp->if_flags &= ~IFF_OACTIVE; 1251 awi_start(ifp); 1252 } 1253 1254 static struct mbuf * 1255 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1256 { 1257 struct ifnet *ifp = &sc->sc_if; 1258 struct mbuf *m; 1259 struct mbuf *top, **mp; 1260 u_int tlen; 1261 1262 top = sc->sc_rxpend; 1263 mp = ⊤ 1264 if (top != NULL) { 1265 sc->sc_rxpend = NULL; 1266 top->m_pkthdr.len += len; 1267 m = top; 1268 while (*mp != NULL) { 1269 m = *mp; 1270 mp = &m->m_next; 1271 } 1272 if (m->m_flags & M_EXT) 1273 tlen = m->m_ext.ext_size; 1274 else if (m->m_flags & M_PKTHDR) 1275 tlen = MHLEN; 1276 else 1277 tlen = MLEN; 1278 tlen -= m->m_len; 1279 if (tlen > len) 1280 tlen = len; 1281 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1282 off += tlen; 1283 len -= tlen; 1284 } 1285 1286 while (len > 0) { 1287 if (top == NULL) { 1288 MGETHDR(m, M_DONTWAIT, MT_DATA); 1289 if (m == NULL) 1290 return NULL; 1291 m->m_pkthdr.rcvif = ifp; 1292 m->m_pkthdr.len = len; 1293 m->m_len = MHLEN; 1294 m->m_flags |= M_HASFCS; 1295 } else { 1296 MGET(m, M_DONTWAIT, MT_DATA); 1297 if (m == NULL) { 1298 m_freem(top); 1299 return NULL; 1300 } 1301 m->m_len = MLEN; 1302 } 1303 if (len >= MINCLSIZE) { 1304 MCLGET(m, M_DONTWAIT); 1305 if (m->m_flags & M_EXT) 1306 m->m_len = m->m_ext.ext_size; 1307 } 1308 if (top == NULL) { 1309 int hdrlen = sizeof(struct ieee80211_frame) + 1310 sizeof(struct llc); 1311 char *newdata = (char *) 1312 ALIGN(m->m_data + hdrlen) - hdrlen; 1313 m->m_len -= newdata - m->m_data; 1314 m->m_data = newdata; 1315 } 1316 if (m->m_len > len) 1317 m->m_len = len; 1318 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1319 off += m->m_len; 1320 len -= m->m_len; 1321 *mp = m; 1322 mp = &m->m_next; 1323 } 1324 return top; 1325 } 1326 1327 /* 1328 * Initialize hardware and start firmware to accept commands. 1329 * Called everytime after power on firmware. 1330 */ 1331 1332 static int 1333 awi_hw_init(struct awi_softc *sc) 1334 { 1335 u_int8_t status; 1336 u_int16_t intmask; 1337 int i, error; 1338 1339 sc->sc_enab_intr = 0; 1340 sc->sc_invalid = 0; /* XXX: really? */ 1341 awi_drvstate(sc, AWI_DRV_RESET); 1342 1343 /* reset firmware */ 1344 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1345 DELAY(100); 1346 awi_write_1(sc, AWI_SELFTEST, 0); 1347 awi_write_1(sc, AWI_CMD, 0); 1348 awi_write_1(sc, AWI_BANNER, 0); 1349 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1350 DELAY(100); 1351 1352 /* wait for selftest completion */ 1353 for (i = 0; ; i++) { 1354 if (sc->sc_invalid) 1355 return ENXIO; 1356 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1357 printf("%s: failed to complete selftest (timeout)\n", 1358 sc->sc_if.if_xname); 1359 return ENXIO; 1360 } 1361 status = awi_read_1(sc, AWI_SELFTEST); 1362 if ((status & 0xf0) == 0xf0) 1363 break; 1364 if (sc->sc_cansleep) { 1365 sc->sc_sleep_cnt++; 1366 (void)tsleep(sc, PWAIT, "awitst", 1); 1367 sc->sc_sleep_cnt--; 1368 } else { 1369 DELAY(1000*1000/hz); 1370 } 1371 } 1372 if (status != AWI_SELFTEST_PASSED) { 1373 printf("%s: failed to complete selftest (code %x)\n", 1374 sc->sc_if.if_xname, status); 1375 return ENXIO; 1376 } 1377 1378 /* check banner to confirm firmware write it */ 1379 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1380 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1381 printf("%s: failed to complete selftest (bad banner)\n", 1382 sc->sc_if.if_xname); 1383 for (i = 0; i < AWI_BANNER_LEN; i++) 1384 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1385 printf("\n"); 1386 return ENXIO; 1387 } 1388 1389 /* initializing interrupt */ 1390 sc->sc_enab_intr = 1; 1391 error = awi_intr_lock(sc); 1392 if (error) 1393 return error; 1394 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1395 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1396 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1397 awi_write_1(sc, AWI_INTMASK2, 0); 1398 awi_write_1(sc, AWI_INTSTAT, 0); 1399 awi_write_1(sc, AWI_INTSTAT2, 0); 1400 awi_intr_unlock(sc); 1401 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1402 1403 /* issuing interface test command */ 1404 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1405 if (error) { 1406 printf("%s: failed to complete selftest", 1407 sc->sc_if.if_xname); 1408 if (error == ENXIO) 1409 printf(" (no hardware)\n"); 1410 else if (error != EWOULDBLOCK) 1411 printf(" (error %d)\n", error); 1412 else if (sc->sc_cansleep) 1413 printf(" (lost interrupt)\n"); 1414 else 1415 printf(" (command timeout)\n"); 1416 return error; 1417 } 1418 1419 /* Initialize VBM */ 1420 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1421 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1422 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1423 return 0; 1424 } 1425 1426 /* 1427 * Extract the factory default MIB value from firmware and assign the driver 1428 * default value. 1429 * Called once at attaching the interface. 1430 */ 1431 1432 static int 1433 awi_init_mibs(struct awi_softc *sc) 1434 { 1435 int chan, i, error; 1436 struct ieee80211com *ic = &sc->sc_ic; 1437 struct awi_chanset *cs; 1438 1439 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1440 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1441 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1442 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1443 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1444 printf("%s: failed to get default mib value (error %d)\n", 1445 sc->sc_if.if_xname, error); 1446 return error; 1447 } 1448 1449 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1450 for (cs = awi_chanset; ; cs++) { 1451 if (cs->cs_type == 0) { 1452 printf("%s: failed to set available channel\n", 1453 sc->sc_if.if_xname); 1454 return ENXIO; 1455 } 1456 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1457 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1458 break; 1459 } 1460 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1461 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1462 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1463 setbit(sc->sc_ic.ic_chan_avail, chan); 1464 /* XXX for FHSS, does frequency matter? */ 1465 ic->ic_channels[chan].ic_freq = 0; 1466 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1467 /* 1468 * According to the IEEE 802.11 specification, 1469 * hop pattern parameter for FH phy should be 1470 * incremented by 3 for given hop chanset, i.e., 1471 * the chanset parameter is calculated for given 1472 * hop patter. However, BayStack 650 Access Points 1473 * apparently use fixed hop chanset parameter value 1474 * 1 for any hop pattern. So we also try this 1475 * combination of hop chanset and pattern. 1476 */ 1477 chan = IEEE80211_FH_CHAN(1, i); 1478 setbit(sc->sc_ic.ic_chan_avail, chan); 1479 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1480 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1481 } 1482 } else { 1483 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1484 setbit(sc->sc_ic.ic_chan_avail, i); 1485 ic->ic_channels[i].ic_freq = 1486 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1487 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1488 } 1489 } 1490 sc->sc_cur_chan = cs->cs_def; 1491 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1492 1493 sc->sc_mib_local.Fragmentation_Dis = 1; 1494 sc->sc_mib_local.Add_PLCP_Dis = 0; 1495 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1496 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1497 sc->sc_mib_local.Re_Assembly_Dis = 1; 1498 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1499 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1500 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1501 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1502 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1503 sc->sc_mib_local.Network_Mode = 1; 1504 sc->sc_mib_local.PWD_Lvl = 0; 1505 sc->sc_mib_local.CFP_Mode = 0; 1506 1507 /* allocate buffers */ 1508 sc->sc_txbase = AWI_BUFFERS; 1509 sc->sc_txend = sc->sc_txbase + 1510 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1511 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1512 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1513 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1514 sc->sc_txend - sc->sc_txbase); 1515 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1516 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1517 AWI_BUFFERS_END - sc->sc_txend); 1518 sc->sc_mib_local.Acting_as_AP = 0; 1519 sc->sc_mib_local.Fill_CFP = 0; 1520 1521 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1522 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1523 1524 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1525 sc->sc_mib_mgt.aDTIM_Period = 1; 1526 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1527 return 0; 1528 } 1529 1530 static int 1531 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1532 { 1533 int error; 1534 u_int8_t size, *ptr; 1535 1536 switch (mib) { 1537 case AWI_MIB_LOCAL: 1538 ptr = (u_int8_t *)&sc->sc_mib_local; 1539 size = sizeof(sc->sc_mib_local); 1540 break; 1541 case AWI_MIB_ADDR: 1542 ptr = (u_int8_t *)&sc->sc_mib_addr; 1543 size = sizeof(sc->sc_mib_addr); 1544 break; 1545 case AWI_MIB_MAC: 1546 ptr = (u_int8_t *)&sc->sc_mib_mac; 1547 size = sizeof(sc->sc_mib_mac); 1548 break; 1549 case AWI_MIB_STAT: 1550 ptr = (u_int8_t *)&sc->sc_mib_stat; 1551 size = sizeof(sc->sc_mib_stat); 1552 break; 1553 case AWI_MIB_MGT: 1554 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1555 size = sizeof(sc->sc_mib_mgt); 1556 break; 1557 case AWI_MIB_PHY: 1558 ptr = (u_int8_t *)&sc->sc_mib_phy; 1559 size = sizeof(sc->sc_mib_phy); 1560 break; 1561 default: 1562 return EINVAL; 1563 } 1564 if (sc->sc_cmd_inprog) { 1565 if ((error = awi_cmd_wait(sc)) != 0) { 1566 if (error == EWOULDBLOCK) { 1567 DPRINTF(("awi_mib: cmd %d inprog", 1568 sc->sc_cmd_inprog)); 1569 } 1570 return error; 1571 } 1572 } 1573 sc->sc_cmd_inprog = cmd; 1574 if (cmd == AWI_CMD_SET_MIB) 1575 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1576 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1577 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1578 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1579 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1580 return error; 1581 if (cmd == AWI_CMD_GET_MIB) { 1582 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1583 #ifdef AWI_DEBUG 1584 if (awi_debug) { 1585 int i; 1586 1587 printf("awi_mib: #%d:", mib); 1588 for (i = 0; i < size; i++) 1589 printf(" %02x", ptr[i]); 1590 printf("\n"); 1591 } 1592 #endif 1593 } 1594 return 0; 1595 } 1596 1597 static int 1598 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1599 { 1600 u_int8_t status; 1601 int error = 0; 1602 #ifdef AWI_DEBUG 1603 static const char *cmdname[] = { 1604 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1605 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1606 }; 1607 #endif 1608 1609 #ifdef AWI_DEBUG 1610 if (awi_debug > 1) { 1611 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1612 printf("awi_cmd: #%d", cmd); 1613 else 1614 printf("awi_cmd: %s", cmdname[cmd]); 1615 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1616 } 1617 #endif 1618 sc->sc_cmd_inprog = cmd; 1619 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1620 awi_write_1(sc, AWI_CMD, cmd); 1621 if (wflag == AWI_NOWAIT) 1622 return EINPROGRESS; 1623 if ((error = awi_cmd_wait(sc)) != 0) 1624 return error; 1625 status = awi_read_1(sc, AWI_CMD_STATUS); 1626 awi_write_1(sc, AWI_CMD, 0); 1627 switch (status) { 1628 case AWI_STAT_OK: 1629 break; 1630 case AWI_STAT_BADPARM: 1631 return EINVAL; 1632 default: 1633 printf("%s: command %d failed %x\n", 1634 sc->sc_if.if_xname, cmd, status); 1635 return ENXIO; 1636 } 1637 return 0; 1638 } 1639 1640 static int 1641 awi_cmd_wait(struct awi_softc *sc) 1642 { 1643 int i, error = 0; 1644 1645 i = 0; 1646 while (sc->sc_cmd_inprog) { 1647 if (sc->sc_invalid) 1648 return ENXIO; 1649 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1650 printf("%s: failed to access hardware\n", 1651 sc->sc_if.if_xname); 1652 sc->sc_invalid = 1; 1653 return ENXIO; 1654 } 1655 if (sc->sc_cansleep) { 1656 sc->sc_sleep_cnt++; 1657 error = tsleep(sc, PWAIT, "awicmd", 1658 AWI_CMD_TIMEOUT*hz/1000); 1659 sc->sc_sleep_cnt--; 1660 } else { 1661 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1662 awi_cmd_done(sc); 1663 break; 1664 } 1665 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1666 error = EWOULDBLOCK; 1667 else 1668 DELAY(10); 1669 } 1670 if (error) 1671 break; 1672 } 1673 if (error) { 1674 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1675 sc->sc_cmd_inprog, error)); 1676 } 1677 return error; 1678 } 1679 1680 static void 1681 awi_cmd_done(struct awi_softc *sc) 1682 { 1683 u_int8_t cmd, status; 1684 1685 status = awi_read_1(sc, AWI_CMD_STATUS); 1686 if (status == AWI_STAT_IDLE) 1687 return; /* stray interrupt */ 1688 1689 cmd = sc->sc_cmd_inprog; 1690 sc->sc_cmd_inprog = 0; 1691 wakeup(sc); 1692 awi_write_1(sc, AWI_CMD, 0); 1693 1694 if (status != AWI_STAT_OK) { 1695 printf("%s: command %d failed %x\n", 1696 sc->sc_if.if_xname, cmd, status); 1697 sc->sc_substate = AWI_ST_NONE; 1698 return; 1699 } 1700 if (sc->sc_substate != AWI_ST_NONE) 1701 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1702 } 1703 1704 static int 1705 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1706 { 1707 u_int32_t txd, ntxd, frame; 1708 1709 txd = sc->sc_txnext; 1710 frame = txd + AWI_TXD_SIZE; 1711 if (frame + len > sc->sc_txend) 1712 frame = sc->sc_txbase; 1713 ntxd = frame + len; 1714 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1715 ntxd = sc->sc_txbase; 1716 *framep = frame; 1717 *ntxdp = ntxd; 1718 /* 1719 * Determine if there are any room in ring buffer. 1720 * --- send wait, === new data, +++ conflict (ENOBUFS) 1721 * base........................end 1722 * done----txd=====ntxd OK 1723 * --txd=====done++++ntxd-- full 1724 * --txd=====ntxd done-- OK 1725 * ==ntxd done----txd=== OK 1726 * ==done++++ntxd----txd=== full 1727 * ++ntxd txd=====done++ full 1728 */ 1729 if (txd < ntxd) { 1730 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1731 return ENOBUFS; 1732 } else { 1733 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1734 return ENOBUFS; 1735 } 1736 return 0; 1737 } 1738 1739 static int 1740 awi_lock(struct awi_softc *sc) 1741 { 1742 int error = 0; 1743 1744 #ifdef __NetBSD__ 1745 if (curlwp == NULL) 1746 #else 1747 if (curproc == NULL) 1748 #endif 1749 { 1750 /* 1751 * XXX 1752 * Though driver ioctl should be called with context, 1753 * KAME ipv6 stack calls ioctl in interrupt for now. 1754 * We simply abort the request if there are other 1755 * ioctl requests in progress. 1756 */ 1757 if (sc->sc_busy) { 1758 if (sc->sc_invalid) 1759 return ENXIO; 1760 return EWOULDBLOCK; 1761 } 1762 sc->sc_busy = 1; 1763 sc->sc_cansleep = 0; 1764 return 0; 1765 } 1766 while (sc->sc_busy) { 1767 if (sc->sc_invalid) 1768 return ENXIO; 1769 sc->sc_sleep_cnt++; 1770 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1771 sc->sc_sleep_cnt--; 1772 if (error) 1773 return error; 1774 } 1775 sc->sc_busy = 1; 1776 sc->sc_cansleep = 1; 1777 return 0; 1778 } 1779 1780 static void 1781 awi_unlock(struct awi_softc *sc) 1782 { 1783 sc->sc_busy = 0; 1784 sc->sc_cansleep = 0; 1785 if (sc->sc_sleep_cnt) 1786 wakeup(sc); 1787 } 1788 1789 static int 1790 awi_intr_lock(struct awi_softc *sc) 1791 { 1792 u_int8_t status; 1793 int i, retry; 1794 1795 status = 1; 1796 for (retry = 0; retry < 10; retry++) { 1797 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1798 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1799 break; 1800 DELAY(5); 1801 } 1802 if (status != 0) 1803 break; 1804 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1805 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1806 break; 1807 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1808 } 1809 if (status != 0) { 1810 printf("%s: failed to lock interrupt\n", 1811 sc->sc_if.if_xname); 1812 return ENXIO; 1813 } 1814 return 0; 1815 } 1816 1817 static void 1818 awi_intr_unlock(struct awi_softc *sc) 1819 { 1820 1821 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1822 } 1823 1824 static int 1825 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1826 { 1827 struct ifnet *ifp = ic->ic_ifp; 1828 struct awi_softc *sc = ifp->if_softc; 1829 struct ieee80211_node *ni; 1830 int error; 1831 u_int8_t newmode; 1832 enum ieee80211_state ostate; 1833 #ifdef AWI_DEBUG 1834 static const char *stname[] = 1835 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1836 static const char *substname[] = 1837 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1838 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1839 #endif /* AWI_DEBUG */ 1840 1841 ostate = ic->ic_state; 1842 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1843 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1844 1845 /* set LED */ 1846 switch (nstate) { 1847 case IEEE80211_S_INIT: 1848 awi_drvstate(sc, AWI_DRV_RESET); 1849 break; 1850 case IEEE80211_S_SCAN: 1851 if (ic->ic_opmode == IEEE80211_M_IBSS || 1852 ic->ic_opmode == IEEE80211_M_AHDEMO) 1853 awi_drvstate(sc, AWI_DRV_ADHSC); 1854 else 1855 awi_drvstate(sc, AWI_DRV_INFSY); 1856 break; 1857 case IEEE80211_S_AUTH: 1858 awi_drvstate(sc, AWI_DRV_INFSY); 1859 break; 1860 case IEEE80211_S_ASSOC: 1861 awi_drvstate(sc, AWI_DRV_INFAUTH); 1862 break; 1863 case IEEE80211_S_RUN: 1864 if (ic->ic_opmode == IEEE80211_M_IBSS || 1865 ic->ic_opmode == IEEE80211_M_AHDEMO) 1866 awi_drvstate(sc, AWI_DRV_ADHSY); 1867 else 1868 awi_drvstate(sc, AWI_DRV_INFASSOC); 1869 break; 1870 } 1871 1872 if (nstate == IEEE80211_S_INIT) { 1873 sc->sc_substate = AWI_ST_NONE; 1874 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1875 return (*sc->sc_newstate)(ic, nstate, arg); 1876 } 1877 1878 /* state transition */ 1879 if (nstate == IEEE80211_S_SCAN) { 1880 /* SCAN substate */ 1881 if (sc->sc_substate == AWI_ST_NONE) { 1882 sc->sc_nstate = nstate; /* next state in transition */ 1883 sc->sc_substate = AWI_ST_SCAN_INIT; 1884 } 1885 switch (sc->sc_substate) { 1886 case AWI_ST_SCAN_INIT: 1887 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1888 switch (ostate) { 1889 case IEEE80211_S_RUN: 1890 /* beacon miss */ 1891 if (ifp->if_flags & IFF_DEBUG) 1892 printf("%s: no recent beacons from %s;" 1893 " rescanning\n", 1894 ifp->if_xname, 1895 ether_sprintf(ic->ic_bss->ni_bssid)); 1896 /* FALLTHRU */ 1897 case IEEE80211_S_AUTH: 1898 case IEEE80211_S_ASSOC: 1899 case IEEE80211_S_INIT: 1900 ieee80211_begin_scan(ic, 1); 1901 /* FALLTHRU */ 1902 case IEEE80211_S_SCAN: 1903 /* scan next */ 1904 break; 1905 } 1906 if (ic->ic_flags & IEEE80211_F_ASCAN) 1907 newmode = AWI_SCAN_ACTIVE; 1908 else 1909 newmode = AWI_SCAN_PASSIVE; 1910 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1911 sc->sc_mib_mgt.aScan_Mode = newmode; 1912 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1913 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1914 break; 1915 } 1916 /* FALLTHRU */ 1917 case AWI_ST_SCAN_SETMIB: 1918 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1919 if (sc->sc_cmd_inprog) { 1920 if ((error = awi_cmd_wait(sc)) != 0) 1921 break; 1922 } 1923 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1924 ni = ic->ic_bss; 1925 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1926 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1927 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1928 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1929 awi_write_1(sc, AWI_CA_SCAN_SET, 1930 IEEE80211_FH_CHANSET( 1931 ieee80211_chan2ieee(ic, ni->ni_chan))); 1932 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1933 IEEE80211_FH_CHANPAT( 1934 ieee80211_chan2ieee(ic, ni->ni_chan))); 1935 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1936 } else { 1937 awi_write_1(sc, AWI_CA_SCAN_SET, 1938 ieee80211_chan2ieee(ic, ni->ni_chan)); 1939 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1940 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1941 } 1942 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1943 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1944 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1945 != 0) 1946 break; 1947 /* FALLTHRU */ 1948 case AWI_ST_SCAN_SCCMD: 1949 ic->ic_state = nstate; 1950 sc->sc_substate = AWI_ST_NONE; 1951 error = EINPROGRESS; 1952 break; 1953 default: 1954 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1955 stname[nstate], substname[sc->sc_substate])); 1956 sc->sc_substate = AWI_ST_NONE; 1957 error = EIO; 1958 break; 1959 } 1960 goto out; 1961 } 1962 1963 if (ostate == IEEE80211_S_SCAN) { 1964 /* set SSID and channel */ 1965 /* substate */ 1966 if (sc->sc_substate == AWI_ST_NONE) { 1967 sc->sc_nstate = nstate; /* next state in transition */ 1968 sc->sc_substate = AWI_ST_SUB_INIT; 1969 } 1970 ni = ic->ic_bss; 1971 switch (sc->sc_substate) { 1972 case AWI_ST_SUB_INIT: 1973 sc->sc_substate = AWI_ST_SUB_SETSS; 1974 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1975 ni->ni_bssid); 1976 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1977 AWI_ESS_ID_SIZE); 1978 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1979 IEEE80211_ELEMID_SSID; 1980 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1981 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1982 ni->ni_essid, ni->ni_esslen); 1983 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1984 ni->ni_intval); 1985 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1986 AWI_NOWAIT)) != 0) 1987 break; 1988 /* FALLTHRU */ 1989 case AWI_ST_SUB_SETSS: 1990 sc->sc_substate = AWI_ST_SUB_SYNC; 1991 if (sc->sc_cmd_inprog) { 1992 if ((error = awi_cmd_wait(sc)) != 0) 1993 break; 1994 } 1995 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1996 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1997 awi_write_1(sc, AWI_CA_SYNC_SET, 1998 IEEE80211_FH_CHANSET( 1999 ieee80211_chan2ieee(ic, ni->ni_chan))); 2000 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 2001 IEEE80211_FH_CHANPAT( 2002 ieee80211_chan2ieee(ic, ni->ni_chan))); 2003 awi_write_1(sc, AWI_CA_SYNC_IDX, 2004 ni->ni_fhindex); 2005 awi_write_2(sc, AWI_CA_SYNC_DWELL, 2006 ni->ni_fhdwell); 2007 } else { 2008 awi_write_1(sc, AWI_CA_SYNC_SET, 2009 ieee80211_chan2ieee(ic, ni->ni_chan)); 2010 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 2011 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 2012 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 2013 } 2014 if (ic->ic_flags & IEEE80211_F_SIBSS) { 2015 memset(&ni->ni_tstamp, 0, 2016 sizeof(ni->ni_tstamp)); 2017 ni->ni_rstamp = 0; 2018 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 2019 } else 2020 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 2021 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 2022 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 2023 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 2024 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 2025 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2026 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 2027 != 0) 2028 break; 2029 /* FALLTHRU */ 2030 case AWI_ST_SUB_SYNC: 2031 sc->sc_substate = AWI_ST_NONE; 2032 if (ic->ic_flags & IEEE80211_F_SIBSS) { 2033 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 2034 AWI_MIB_MGT, AWI_WAIT)) != 0) 2035 break; 2036 IEEE80211_ADDR_COPY(ni->ni_bssid, 2037 &sc->sc_mib_mgt.aCurrent_BSS_ID); 2038 } else { 2039 if (nstate == IEEE80211_S_RUN) { 2040 sc->sc_rx_timer = 10; 2041 ifp->if_timer = 1; 2042 } 2043 } 2044 error = 0; 2045 break; 2046 default: 2047 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 2048 stname[nstate], substname[sc->sc_substate])); 2049 sc->sc_substate = AWI_ST_NONE; 2050 error = EIO; 2051 break; 2052 } 2053 goto out; 2054 } 2055 2056 sc->sc_substate = AWI_ST_NONE; 2057 2058 return (*sc->sc_newstate)(ic, nstate, arg); 2059 out: 2060 if (error != 0) { 2061 if (error == EINPROGRESS) 2062 error = 0; 2063 return error; 2064 } 2065 return (*sc->sc_newstate)(ic, nstate, arg); 2066 } 2067 2068 static void 2069 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 2070 struct ieee80211_node *ni, 2071 int subtype, int rssi, u_int32_t rstamp) 2072 { 2073 struct awi_softc *sc = ic->ic_ifp->if_softc; 2074 2075 /* probe request is handled by hardware */ 2076 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2077 return; 2078 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 2079 } 2080 2081 static int 2082 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 2083 int type, int arg) 2084 { 2085 struct awi_softc *sc = ic->ic_ifp->if_softc; 2086 2087 /* probe request is handled by hardware */ 2088 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2089 return 0; 2090 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2091 } 2092 2093 static struct mbuf * 2094 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2095 { 2096 struct ieee80211com *ic = &sc->sc_ic; 2097 struct ieee80211_node *ni = ic->ic_bss; 2098 struct ether_header *eh; 2099 struct ieee80211_frame *wh; 2100 2101 if (m->m_len < sizeof(struct ether_header)) { 2102 m = m_pullup(m, sizeof(struct ether_header)); 2103 if (m == NULL) 2104 return NULL; 2105 } 2106 eh = mtod(m, struct ether_header *); 2107 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2108 if (m == NULL) 2109 return NULL; 2110 wh = mtod(m, struct ieee80211_frame *); 2111 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2112 *(u_int16_t *)wh->i_dur = 0; 2113 *(u_int16_t *)wh->i_seq = 2114 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2115 ni->ni_txseqs[0]++; 2116 if (ic->ic_opmode == IEEE80211_M_IBSS || 2117 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2118 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2119 if (sc->sc_adhoc_ap) 2120 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2121 else 2122 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2123 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2124 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2125 } else { 2126 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2127 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2128 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2129 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2130 } 2131 return m; 2132 } 2133 2134 static struct mbuf * 2135 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2136 { 2137 struct ieee80211com *ic = &sc->sc_ic; 2138 struct ether_header eh; 2139 struct ieee80211_frame wh; 2140 struct llc *llc; 2141 2142 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2143 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2144 if (m == NULL) 2145 return NULL; 2146 } 2147 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2148 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2149 return m; 2150 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2151 m_adj(m, sizeof(eh) - sizeof(*llc)); 2152 if (ic->ic_opmode == IEEE80211_M_IBSS || 2153 ic->ic_opmode == IEEE80211_M_AHDEMO) 2154 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2155 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2156 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2157 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2158 llc->llc_control = LLC_UI; 2159 llc->llc_snap.org_code[0] = 0; 2160 llc->llc_snap.org_code[1] = 0; 2161 llc->llc_snap.org_code[2] = 0; 2162 llc->llc_snap.ether_type = eh.ether_type; 2163 return m; 2164 } 2165
Indexes created Sun Oct 19 02:09:48 GMT 2025