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sys/dev/ic/awi.c
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1 /* $NetBSD: awi.c,v 1.80 2008/05/16 22:11:51 dyoung 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@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@NetBSD.org> 78 */ 79 80 #include <sys/cdefs.h> 81 #ifdef __NetBSD__ 82 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.80 2008/05/16 22:11:51 dyoung 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(struct device *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 (ifp->if_flags & IFF_UP) { 906 if (sc->sc_enabled) { 907 /* 908 * To avoid rescanning another access point, 909 * do not call awi_init() here. Instead, 910 * only reflect promisc mode settings. 911 */ 912 error = awi_mode_init(sc); 913 } else 914 error = awi_init(ifp); 915 } else if (sc->sc_enabled) 916 awi_stop(ifp, 1); 917 break; 918 case SIOCSIFMEDIA: 919 case SIOCGIFMEDIA: 920 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 921 break; 922 case SIOCADDMULTI: 923 case SIOCDELMULTI: 924 #ifdef __FreeBSD__ 925 error = ENETRESET; /* XXX */ 926 #else 927 error = ether_ioctl(ifp, cmd, data); 928 #endif 929 if (error == ENETRESET) { 930 /* do not rescan */ 931 if (ifp->if_flags & IFF_RUNNING) 932 error = awi_mode_init(sc); 933 else 934 error = 0; 935 } 936 break; 937 default: 938 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 939 if (error == ENETRESET) { 940 if (sc->sc_enabled) 941 error = awi_init(ifp); 942 else 943 error = 0; 944 } 945 break; 946 } 947 awi_unlock(sc); 948 cantlock: 949 splx(s); 950 return error; 951 } 952 953 /* 954 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 955 * 956 * TBD factor with ieee80211_media_change 957 */ 958 static int 959 awi_media_change(struct ifnet *ifp) 960 { 961 struct awi_softc *sc = ifp->if_softc; 962 struct ieee80211com *ic = &sc->sc_ic; 963 struct ifmedia_entry *ime; 964 enum ieee80211_opmode newmode; 965 int i, rate, newadhoc_ap, error = 0; 966 967 ime = ic->ic_media.ifm_cur; 968 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 969 i = -1; 970 } else { 971 struct ieee80211_rateset *rs = 972 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 973 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 974 rate = ieee80211_media2rate(ime->ifm_media); 975 if (rate == 0) 976 return EINVAL; 977 for (i = 0; i < rs->rs_nrates; i++) { 978 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 979 break; 980 } 981 if (i == rs->rs_nrates) 982 return EINVAL; 983 } 984 if (ic->ic_fixed_rate != i) { 985 ic->ic_fixed_rate = i; 986 error = ENETRESET; 987 } 988 989 /* 990 * combination of mediaopt 991 * 992 * hostap adhoc flag0 opmode adhoc_ap comment 993 * + - - HOSTAP 0 HostAP 994 * - + - IBSS 0 IBSS 995 * - + + AHDEMO 0 WaveLAN adhoc 996 * - - + IBSS 1 Melco old Sta 997 * also LINK0 998 * - - - STA 0 Infra Station 999 */ 1000 newadhoc_ap = 0; 1001 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 1002 newmode = IEEE80211_M_HOSTAP; 1003 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 1004 if (ic->ic_phytype == IEEE80211_T_DS && 1005 (ime->ifm_media & IFM_FLAG0)) 1006 newmode = IEEE80211_M_AHDEMO; 1007 else 1008 newmode = IEEE80211_M_IBSS; 1009 } else if (ime->ifm_media & IFM_FLAG0) { 1010 newmode = IEEE80211_M_IBSS; 1011 newadhoc_ap = 1; 1012 } else 1013 newmode = IEEE80211_M_STA; 1014 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 1015 ic->ic_opmode = newmode; 1016 sc->sc_adhoc_ap = newadhoc_ap; 1017 error = ENETRESET; 1018 } 1019 1020 if (error == ENETRESET) { 1021 if (sc->sc_enabled) 1022 error = awi_init(ifp); 1023 else 1024 error = 0; 1025 } 1026 return error; 1027 } 1028 1029 static void 1030 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 1031 { 1032 struct awi_softc *sc = ifp->if_softc; 1033 struct ieee80211com *ic = &sc->sc_ic; 1034 int rate; 1035 enum ieee80211_phymode mode; 1036 1037 imr->ifm_status = IFM_AVALID; 1038 if (ic->ic_state == IEEE80211_S_RUN) 1039 imr->ifm_status |= IFM_ACTIVE; 1040 imr->ifm_active = IFM_IEEE80211; 1041 if (ic->ic_phytype == IEEE80211_T_FH) 1042 mode = IEEE80211_MODE_FH; 1043 else 1044 mode = IEEE80211_MODE_11B; 1045 if (ic->ic_state == IEEE80211_S_RUN) { 1046 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 1047 IEEE80211_RATE_VAL; 1048 } else { 1049 if (ic->ic_fixed_rate == -1) 1050 rate = 0; 1051 else 1052 rate = ic->ic_sup_rates[mode]. 1053 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 1054 } 1055 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 1056 switch (ic->ic_opmode) { 1057 case IEEE80211_M_MONITOR: /* we should never reach here */ 1058 break; 1059 case IEEE80211_M_STA: 1060 break; 1061 case IEEE80211_M_IBSS: 1062 if (sc->sc_adhoc_ap) 1063 imr->ifm_active |= IFM_FLAG0; 1064 else 1065 imr->ifm_active |= IFM_IEEE80211_ADHOC; 1066 break; 1067 case IEEE80211_M_AHDEMO: 1068 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1069 break; 1070 case IEEE80211_M_HOSTAP: 1071 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1072 break; 1073 } 1074 } 1075 1076 static int 1077 awi_mode_init(struct awi_softc *sc) 1078 { 1079 struct ifnet *ifp = &sc->sc_if; 1080 int n, error; 1081 #ifdef __FreeBSD__ 1082 struct ifmultiaddr *ifma; 1083 #else 1084 struct ether_multi *enm; 1085 struct ether_multistep step; 1086 #endif 1087 1088 /* reinitialize muticast filter */ 1089 n = 0; 1090 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1091 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1092 (ifp->if_flags & IFF_PROMISC)) { 1093 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1094 goto set_mib; 1095 } 1096 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1097 #ifdef __FreeBSD__ 1098 if (ifp->if_amcount != 0) 1099 goto set_mib; 1100 TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) { 1101 if (ifma->ifma_addr->sa_family != AF_LINK) 1102 continue; 1103 if (n == AWI_GROUP_ADDR_SIZE) 1104 goto set_mib; 1105 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1106 CLLADDR(satocsdl(ifma->ifma_addr))); 1107 n++; 1108 } 1109 #else 1110 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 1111 while (enm != NULL) { 1112 if (n == AWI_GROUP_ADDR_SIZE || 1113 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1114 goto set_mib; 1115 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1116 enm->enm_addrlo); 1117 n++; 1118 ETHER_NEXT_MULTI(step, enm); 1119 } 1120 #endif 1121 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1122 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1123 IEEE80211_ADDR_LEN); 1124 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1125 1126 set_mib: 1127 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1128 ifp->if_flags &= ~IFF_ALLMULTI; 1129 else 1130 ifp->if_flags |= IFF_ALLMULTI; 1131 sc->sc_mib_mgt.Wep_Required = 1132 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1133 1134 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1135 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1136 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1137 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1138 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1139 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1140 return error; 1141 } 1142 return 0; 1143 } 1144 1145 static void 1146 awi_rx_int(struct awi_softc *sc) 1147 { 1148 struct ieee80211com *ic = &sc->sc_ic; 1149 struct ifnet *ifp = &sc->sc_if; 1150 struct ieee80211_frame_min *wh; 1151 struct ieee80211_node *ni; 1152 u_int8_t state, rate, rssi; 1153 u_int16_t len; 1154 u_int32_t frame, next, rstamp, rxoff; 1155 struct mbuf *m; 1156 1157 rxoff = sc->sc_rxdoff; 1158 for (;;) { 1159 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1160 if (state & AWI_RXD_ST_OWN) 1161 break; 1162 if (!(state & AWI_RXD_ST_CONSUMED)) { 1163 if (sc->sc_substate != AWI_ST_NONE) 1164 goto rx_next; 1165 if (state & AWI_RXD_ST_RXERROR) { 1166 ifp->if_ierrors++; 1167 goto rx_next; 1168 } 1169 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1170 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1171 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1172 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1173 0x7fff; 1174 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1175 m = awi_devget(sc, frame, len); 1176 if (m == NULL) { 1177 ifp->if_ierrors++; 1178 goto rx_next; 1179 } 1180 if (state & AWI_RXD_ST_LF) { 1181 /* TODO check my bss */ 1182 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1183 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1184 sc->sc_rx_timer = 10; 1185 ifp->if_timer = 1; 1186 } 1187 if ((ifp->if_flags & IFF_DEBUG) && 1188 (ifp->if_flags & IFF_LINK2)) 1189 ieee80211_dump_pkt(m->m_data, m->m_len, 1190 rate / 5, rssi); 1191 if ((ifp->if_flags & IFF_LINK0) || 1192 sc->sc_adhoc_ap) 1193 m = awi_ether_modcap(sc, m); 1194 else 1195 m = m_pullup(m, sizeof(*wh)); 1196 if (m == NULL) { 1197 ifp->if_ierrors++; 1198 goto rx_next; 1199 } 1200 wh = mtod(m, struct ieee80211_frame_min *); 1201 ni = ieee80211_find_rxnode(ic, wh); 1202 ieee80211_input(ic, m, ni, rssi, rstamp); 1203 /* 1204 * The frame may have caused the 1205 * node to be marked for reclamation 1206 * (e.g. in response to a DEAUTH 1207 * message) so use release_node here 1208 * instead of unref_node. 1209 */ 1210 ieee80211_free_node(ni); 1211 } else 1212 sc->sc_rxpend = m; 1213 rx_next: 1214 state |= AWI_RXD_ST_CONSUMED; 1215 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1216 } 1217 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1218 if (next & AWI_RXD_NEXT_LAST) 1219 break; 1220 /* make sure the next pointer is correct */ 1221 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1222 break; 1223 state |= AWI_RXD_ST_OWN; 1224 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1225 rxoff = next & 0x7fff; 1226 } 1227 sc->sc_rxdoff = rxoff; 1228 } 1229 1230 static void 1231 awi_tx_int(struct awi_softc *sc) 1232 { 1233 struct ifnet *ifp = &sc->sc_if; 1234 u_int8_t flags; 1235 1236 while (sc->sc_txdone != sc->sc_txnext) { 1237 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1238 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1239 break; 1240 if (flags & AWI_TXD_ST_ERROR) 1241 ifp->if_oerrors++; 1242 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1243 0x7fff; 1244 } 1245 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1246 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1247 sc->sc_tx_timer = 0; 1248 ifp->if_flags &= ~IFF_OACTIVE; 1249 awi_start(ifp); 1250 } 1251 1252 static struct mbuf * 1253 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1254 { 1255 struct ifnet *ifp = &sc->sc_if; 1256 struct mbuf *m; 1257 struct mbuf *top, **mp; 1258 u_int tlen; 1259 1260 top = sc->sc_rxpend; 1261 mp = ⊤ 1262 if (top != NULL) { 1263 sc->sc_rxpend = NULL; 1264 top->m_pkthdr.len += len; 1265 m = top; 1266 while (*mp != NULL) { 1267 m = *mp; 1268 mp = &m->m_next; 1269 } 1270 if (m->m_flags & M_EXT) 1271 tlen = m->m_ext.ext_size; 1272 else if (m->m_flags & M_PKTHDR) 1273 tlen = MHLEN; 1274 else 1275 tlen = MLEN; 1276 tlen -= m->m_len; 1277 if (tlen > len) 1278 tlen = len; 1279 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1280 off += tlen; 1281 len -= tlen; 1282 } 1283 1284 while (len > 0) { 1285 if (top == NULL) { 1286 MGETHDR(m, M_DONTWAIT, MT_DATA); 1287 if (m == NULL) 1288 return NULL; 1289 m->m_pkthdr.rcvif = ifp; 1290 m->m_pkthdr.len = len; 1291 m->m_len = MHLEN; 1292 m->m_flags |= M_HASFCS; 1293 } else { 1294 MGET(m, M_DONTWAIT, MT_DATA); 1295 if (m == NULL) { 1296 m_freem(top); 1297 return NULL; 1298 } 1299 m->m_len = MLEN; 1300 } 1301 if (len >= MINCLSIZE) { 1302 MCLGET(m, M_DONTWAIT); 1303 if (m->m_flags & M_EXT) 1304 m->m_len = m->m_ext.ext_size; 1305 } 1306 if (top == NULL) { 1307 int hdrlen = sizeof(struct ieee80211_frame) + 1308 sizeof(struct llc); 1309 char *newdata = (char *) 1310 ALIGN(m->m_data + hdrlen) - hdrlen; 1311 m->m_len -= newdata - m->m_data; 1312 m->m_data = newdata; 1313 } 1314 if (m->m_len > len) 1315 m->m_len = len; 1316 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1317 off += m->m_len; 1318 len -= m->m_len; 1319 *mp = m; 1320 mp = &m->m_next; 1321 } 1322 return top; 1323 } 1324 1325 /* 1326 * Initialize hardware and start firmware to accept commands. 1327 * Called everytime after power on firmware. 1328 */ 1329 1330 static int 1331 awi_hw_init(struct awi_softc *sc) 1332 { 1333 u_int8_t status; 1334 u_int16_t intmask; 1335 int i, error; 1336 1337 sc->sc_enab_intr = 0; 1338 sc->sc_invalid = 0; /* XXX: really? */ 1339 awi_drvstate(sc, AWI_DRV_RESET); 1340 1341 /* reset firmware */ 1342 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1343 DELAY(100); 1344 awi_write_1(sc, AWI_SELFTEST, 0); 1345 awi_write_1(sc, AWI_CMD, 0); 1346 awi_write_1(sc, AWI_BANNER, 0); 1347 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1348 DELAY(100); 1349 1350 /* wait for selftest completion */ 1351 for (i = 0; ; i++) { 1352 if (sc->sc_invalid) 1353 return ENXIO; 1354 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1355 printf("%s: failed to complete selftest (timeout)\n", 1356 sc->sc_if.if_xname); 1357 return ENXIO; 1358 } 1359 status = awi_read_1(sc, AWI_SELFTEST); 1360 if ((status & 0xf0) == 0xf0) 1361 break; 1362 if (sc->sc_cansleep) { 1363 sc->sc_sleep_cnt++; 1364 (void)tsleep(sc, PWAIT, "awitst", 1); 1365 sc->sc_sleep_cnt--; 1366 } else { 1367 DELAY(1000*1000/hz); 1368 } 1369 } 1370 if (status != AWI_SELFTEST_PASSED) { 1371 printf("%s: failed to complete selftest (code %x)\n", 1372 sc->sc_if.if_xname, status); 1373 return ENXIO; 1374 } 1375 1376 /* check banner to confirm firmware write it */ 1377 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1378 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1379 printf("%s: failed to complete selftest (bad banner)\n", 1380 sc->sc_if.if_xname); 1381 for (i = 0; i < AWI_BANNER_LEN; i++) 1382 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1383 printf("\n"); 1384 return ENXIO; 1385 } 1386 1387 /* initializing interrupt */ 1388 sc->sc_enab_intr = 1; 1389 error = awi_intr_lock(sc); 1390 if (error) 1391 return error; 1392 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1393 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1394 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1395 awi_write_1(sc, AWI_INTMASK2, 0); 1396 awi_write_1(sc, AWI_INTSTAT, 0); 1397 awi_write_1(sc, AWI_INTSTAT2, 0); 1398 awi_intr_unlock(sc); 1399 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1400 1401 /* issuing interface test command */ 1402 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1403 if (error) { 1404 printf("%s: failed to complete selftest", 1405 sc->sc_if.if_xname); 1406 if (error == ENXIO) 1407 printf(" (no hardware)\n"); 1408 else if (error != EWOULDBLOCK) 1409 printf(" (error %d)\n", error); 1410 else if (sc->sc_cansleep) 1411 printf(" (lost interrupt)\n"); 1412 else 1413 printf(" (command timeout)\n"); 1414 return error; 1415 } 1416 1417 /* Initialize VBM */ 1418 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1419 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1420 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1421 return 0; 1422 } 1423 1424 /* 1425 * Extract the factory default MIB value from firmware and assign the driver 1426 * default value. 1427 * Called once at attaching the interface. 1428 */ 1429 1430 static int 1431 awi_init_mibs(struct awi_softc *sc) 1432 { 1433 int chan, i, error; 1434 struct ieee80211com *ic = &sc->sc_ic; 1435 struct awi_chanset *cs; 1436 1437 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1438 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1439 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1440 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1441 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1442 printf("%s: failed to get default mib value (error %d)\n", 1443 sc->sc_if.if_xname, error); 1444 return error; 1445 } 1446 1447 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1448 for (cs = awi_chanset; ; cs++) { 1449 if (cs->cs_type == 0) { 1450 printf("%s: failed to set available channel\n", 1451 sc->sc_if.if_xname); 1452 return ENXIO; 1453 } 1454 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1455 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1456 break; 1457 } 1458 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1459 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1460 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1461 setbit(sc->sc_ic.ic_chan_avail, chan); 1462 /* XXX for FHSS, does frequency matter? */ 1463 ic->ic_channels[chan].ic_freq = 0; 1464 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1465 /* 1466 * According to the IEEE 802.11 specification, 1467 * hop pattern parameter for FH phy should be 1468 * incremented by 3 for given hop chanset, i.e., 1469 * the chanset parameter is calculated for given 1470 * hop patter. However, BayStack 650 Access Points 1471 * apparently use fixed hop chanset parameter value 1472 * 1 for any hop pattern. So we also try this 1473 * combination of hop chanset and pattern. 1474 */ 1475 chan = IEEE80211_FH_CHAN(1, i); 1476 setbit(sc->sc_ic.ic_chan_avail, chan); 1477 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1478 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1479 } 1480 } else { 1481 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1482 setbit(sc->sc_ic.ic_chan_avail, i); 1483 ic->ic_channels[i].ic_freq = 1484 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1485 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1486 } 1487 } 1488 sc->sc_cur_chan = cs->cs_def; 1489 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1490 1491 sc->sc_mib_local.Fragmentation_Dis = 1; 1492 sc->sc_mib_local.Add_PLCP_Dis = 0; 1493 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1494 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1495 sc->sc_mib_local.Re_Assembly_Dis = 1; 1496 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1497 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1498 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1499 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1500 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1501 sc->sc_mib_local.Network_Mode = 1; 1502 sc->sc_mib_local.PWD_Lvl = 0; 1503 sc->sc_mib_local.CFP_Mode = 0; 1504 1505 /* allocate buffers */ 1506 sc->sc_txbase = AWI_BUFFERS; 1507 sc->sc_txend = sc->sc_txbase + 1508 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1509 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1510 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1511 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1512 sc->sc_txend - sc->sc_txbase); 1513 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1514 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1515 AWI_BUFFERS_END - sc->sc_txend); 1516 sc->sc_mib_local.Acting_as_AP = 0; 1517 sc->sc_mib_local.Fill_CFP = 0; 1518 1519 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1520 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1521 1522 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1523 sc->sc_mib_mgt.aDTIM_Period = 1; 1524 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1525 return 0; 1526 } 1527 1528 static int 1529 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1530 { 1531 int error; 1532 u_int8_t size, *ptr; 1533 1534 switch (mib) { 1535 case AWI_MIB_LOCAL: 1536 ptr = (u_int8_t *)&sc->sc_mib_local; 1537 size = sizeof(sc->sc_mib_local); 1538 break; 1539 case AWI_MIB_ADDR: 1540 ptr = (u_int8_t *)&sc->sc_mib_addr; 1541 size = sizeof(sc->sc_mib_addr); 1542 break; 1543 case AWI_MIB_MAC: 1544 ptr = (u_int8_t *)&sc->sc_mib_mac; 1545 size = sizeof(sc->sc_mib_mac); 1546 break; 1547 case AWI_MIB_STAT: 1548 ptr = (u_int8_t *)&sc->sc_mib_stat; 1549 size = sizeof(sc->sc_mib_stat); 1550 break; 1551 case AWI_MIB_MGT: 1552 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1553 size = sizeof(sc->sc_mib_mgt); 1554 break; 1555 case AWI_MIB_PHY: 1556 ptr = (u_int8_t *)&sc->sc_mib_phy; 1557 size = sizeof(sc->sc_mib_phy); 1558 break; 1559 default: 1560 return EINVAL; 1561 } 1562 if (sc->sc_cmd_inprog) { 1563 if ((error = awi_cmd_wait(sc)) != 0) { 1564 if (error == EWOULDBLOCK) { 1565 DPRINTF(("awi_mib: cmd %d inprog", 1566 sc->sc_cmd_inprog)); 1567 } 1568 return error; 1569 } 1570 } 1571 sc->sc_cmd_inprog = cmd; 1572 if (cmd == AWI_CMD_SET_MIB) 1573 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1574 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1575 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1576 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1577 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1578 return error; 1579 if (cmd == AWI_CMD_GET_MIB) { 1580 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1581 #ifdef AWI_DEBUG 1582 if (awi_debug) { 1583 int i; 1584 1585 printf("awi_mib: #%d:", mib); 1586 for (i = 0; i < size; i++) 1587 printf(" %02x", ptr[i]); 1588 printf("\n"); 1589 } 1590 #endif 1591 } 1592 return 0; 1593 } 1594 1595 static int 1596 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1597 { 1598 u_int8_t status; 1599 int error = 0; 1600 #ifdef AWI_DEBUG 1601 static const char *cmdname[] = { 1602 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1603 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1604 }; 1605 #endif 1606 1607 #ifdef AWI_DEBUG 1608 if (awi_debug > 1) { 1609 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1610 printf("awi_cmd: #%d", cmd); 1611 else 1612 printf("awi_cmd: %s", cmdname[cmd]); 1613 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1614 } 1615 #endif 1616 sc->sc_cmd_inprog = cmd; 1617 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1618 awi_write_1(sc, AWI_CMD, cmd); 1619 if (wflag == AWI_NOWAIT) 1620 return EINPROGRESS; 1621 if ((error = awi_cmd_wait(sc)) != 0) 1622 return error; 1623 status = awi_read_1(sc, AWI_CMD_STATUS); 1624 awi_write_1(sc, AWI_CMD, 0); 1625 switch (status) { 1626 case AWI_STAT_OK: 1627 break; 1628 case AWI_STAT_BADPARM: 1629 return EINVAL; 1630 default: 1631 printf("%s: command %d failed %x\n", 1632 sc->sc_if.if_xname, cmd, status); 1633 return ENXIO; 1634 } 1635 return 0; 1636 } 1637 1638 static int 1639 awi_cmd_wait(struct awi_softc *sc) 1640 { 1641 int i, error = 0; 1642 1643 i = 0; 1644 while (sc->sc_cmd_inprog) { 1645 if (sc->sc_invalid) 1646 return ENXIO; 1647 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1648 printf("%s: failed to access hardware\n", 1649 sc->sc_if.if_xname); 1650 sc->sc_invalid = 1; 1651 return ENXIO; 1652 } 1653 if (sc->sc_cansleep) { 1654 sc->sc_sleep_cnt++; 1655 error = tsleep(sc, PWAIT, "awicmd", 1656 AWI_CMD_TIMEOUT*hz/1000); 1657 sc->sc_sleep_cnt--; 1658 } else { 1659 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1660 awi_cmd_done(sc); 1661 break; 1662 } 1663 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1664 error = EWOULDBLOCK; 1665 else 1666 DELAY(10); 1667 } 1668 if (error) 1669 break; 1670 } 1671 if (error) { 1672 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1673 sc->sc_cmd_inprog, error)); 1674 } 1675 return error; 1676 } 1677 1678 static void 1679 awi_cmd_done(struct awi_softc *sc) 1680 { 1681 u_int8_t cmd, status; 1682 1683 status = awi_read_1(sc, AWI_CMD_STATUS); 1684 if (status == AWI_STAT_IDLE) 1685 return; /* stray interrupt */ 1686 1687 cmd = sc->sc_cmd_inprog; 1688 sc->sc_cmd_inprog = 0; 1689 wakeup(sc); 1690 awi_write_1(sc, AWI_CMD, 0); 1691 1692 if (status != AWI_STAT_OK) { 1693 printf("%s: command %d failed %x\n", 1694 sc->sc_if.if_xname, cmd, status); 1695 sc->sc_substate = AWI_ST_NONE; 1696 return; 1697 } 1698 if (sc->sc_substate != AWI_ST_NONE) 1699 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1700 } 1701 1702 static int 1703 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1704 { 1705 u_int32_t txd, ntxd, frame; 1706 1707 txd = sc->sc_txnext; 1708 frame = txd + AWI_TXD_SIZE; 1709 if (frame + len > sc->sc_txend) 1710 frame = sc->sc_txbase; 1711 ntxd = frame + len; 1712 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1713 ntxd = sc->sc_txbase; 1714 *framep = frame; 1715 *ntxdp = ntxd; 1716 /* 1717 * Determine if there are any room in ring buffer. 1718 * --- send wait, === new data, +++ conflict (ENOBUFS) 1719 * base........................end 1720 * done----txd=====ntxd OK 1721 * --txd=====done++++ntxd-- full 1722 * --txd=====ntxd done-- OK 1723 * ==ntxd done----txd=== OK 1724 * ==done++++ntxd----txd=== full 1725 * ++ntxd txd=====done++ full 1726 */ 1727 if (txd < ntxd) { 1728 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1729 return ENOBUFS; 1730 } else { 1731 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1732 return ENOBUFS; 1733 } 1734 return 0; 1735 } 1736 1737 static int 1738 awi_lock(struct awi_softc *sc) 1739 { 1740 int error = 0; 1741 1742 #ifdef __NetBSD__ 1743 if (curlwp == NULL) 1744 #else 1745 if (curproc == NULL) 1746 #endif 1747 { 1748 /* 1749 * XXX 1750 * Though driver ioctl should be called with context, 1751 * KAME ipv6 stack calls ioctl in interrupt for now. 1752 * We simply abort the request if there are other 1753 * ioctl requests in progress. 1754 */ 1755 if (sc->sc_busy) { 1756 if (sc->sc_invalid) 1757 return ENXIO; 1758 return EWOULDBLOCK; 1759 } 1760 sc->sc_busy = 1; 1761 sc->sc_cansleep = 0; 1762 return 0; 1763 } 1764 while (sc->sc_busy) { 1765 if (sc->sc_invalid) 1766 return ENXIO; 1767 sc->sc_sleep_cnt++; 1768 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1769 sc->sc_sleep_cnt--; 1770 if (error) 1771 return error; 1772 } 1773 sc->sc_busy = 1; 1774 sc->sc_cansleep = 1; 1775 return 0; 1776 } 1777 1778 static void 1779 awi_unlock(struct awi_softc *sc) 1780 { 1781 sc->sc_busy = 0; 1782 sc->sc_cansleep = 0; 1783 if (sc->sc_sleep_cnt) 1784 wakeup(sc); 1785 } 1786 1787 static int 1788 awi_intr_lock(struct awi_softc *sc) 1789 { 1790 u_int8_t status; 1791 int i, retry; 1792 1793 status = 1; 1794 for (retry = 0; retry < 10; retry++) { 1795 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1796 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1797 break; 1798 DELAY(5); 1799 } 1800 if (status != 0) 1801 break; 1802 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1803 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1804 break; 1805 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1806 } 1807 if (status != 0) { 1808 printf("%s: failed to lock interrupt\n", 1809 sc->sc_if.if_xname); 1810 return ENXIO; 1811 } 1812 return 0; 1813 } 1814 1815 static void 1816 awi_intr_unlock(struct awi_softc *sc) 1817 { 1818 1819 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1820 } 1821 1822 static int 1823 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1824 { 1825 struct ifnet *ifp = ic->ic_ifp; 1826 struct awi_softc *sc = ifp->if_softc; 1827 struct ieee80211_node *ni; 1828 int error; 1829 u_int8_t newmode; 1830 enum ieee80211_state ostate; 1831 #ifdef AWI_DEBUG 1832 static const char *stname[] = 1833 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1834 static const char *substname[] = 1835 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1836 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1837 #endif /* AWI_DEBUG */ 1838 1839 ostate = ic->ic_state; 1840 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1841 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1842 1843 /* set LED */ 1844 switch (nstate) { 1845 case IEEE80211_S_INIT: 1846 awi_drvstate(sc, AWI_DRV_RESET); 1847 break; 1848 case IEEE80211_S_SCAN: 1849 if (ic->ic_opmode == IEEE80211_M_IBSS || 1850 ic->ic_opmode == IEEE80211_M_AHDEMO) 1851 awi_drvstate(sc, AWI_DRV_ADHSC); 1852 else 1853 awi_drvstate(sc, AWI_DRV_INFSY); 1854 break; 1855 case IEEE80211_S_AUTH: 1856 awi_drvstate(sc, AWI_DRV_INFSY); 1857 break; 1858 case IEEE80211_S_ASSOC: 1859 awi_drvstate(sc, AWI_DRV_INFAUTH); 1860 break; 1861 case IEEE80211_S_RUN: 1862 if (ic->ic_opmode == IEEE80211_M_IBSS || 1863 ic->ic_opmode == IEEE80211_M_AHDEMO) 1864 awi_drvstate(sc, AWI_DRV_ADHSY); 1865 else 1866 awi_drvstate(sc, AWI_DRV_INFASSOC); 1867 break; 1868 } 1869 1870 if (nstate == IEEE80211_S_INIT) { 1871 sc->sc_substate = AWI_ST_NONE; 1872 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1873 return (*sc->sc_newstate)(ic, nstate, arg); 1874 } 1875 1876 /* state transition */ 1877 if (nstate == IEEE80211_S_SCAN) { 1878 /* SCAN substate */ 1879 if (sc->sc_substate == AWI_ST_NONE) { 1880 sc->sc_nstate = nstate; /* next state in transition */ 1881 sc->sc_substate = AWI_ST_SCAN_INIT; 1882 } 1883 switch (sc->sc_substate) { 1884 case AWI_ST_SCAN_INIT: 1885 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1886 switch (ostate) { 1887 case IEEE80211_S_RUN: 1888 /* beacon miss */ 1889 if (ifp->if_flags & IFF_DEBUG) 1890 printf("%s: no recent beacons from %s;" 1891 " rescanning\n", 1892 ifp->if_xname, 1893 ether_sprintf(ic->ic_bss->ni_bssid)); 1894 /* FALLTHRU */ 1895 case IEEE80211_S_AUTH: 1896 case IEEE80211_S_ASSOC: 1897 case IEEE80211_S_INIT: 1898 ieee80211_begin_scan(ic, 1); 1899 /* FALLTHRU */ 1900 case IEEE80211_S_SCAN: 1901 /* scan next */ 1902 break; 1903 } 1904 if (ic->ic_flags & IEEE80211_F_ASCAN) 1905 newmode = AWI_SCAN_ACTIVE; 1906 else 1907 newmode = AWI_SCAN_PASSIVE; 1908 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1909 sc->sc_mib_mgt.aScan_Mode = newmode; 1910 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1911 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1912 break; 1913 } 1914 /* FALLTHRU */ 1915 case AWI_ST_SCAN_SETMIB: 1916 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1917 if (sc->sc_cmd_inprog) { 1918 if ((error = awi_cmd_wait(sc)) != 0) 1919 break; 1920 } 1921 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1922 ni = ic->ic_bss; 1923 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1924 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1925 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1926 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1927 awi_write_1(sc, AWI_CA_SCAN_SET, 1928 IEEE80211_FH_CHANSET( 1929 ieee80211_chan2ieee(ic, ni->ni_chan))); 1930 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1931 IEEE80211_FH_CHANPAT( 1932 ieee80211_chan2ieee(ic, ni->ni_chan))); 1933 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1934 } else { 1935 awi_write_1(sc, AWI_CA_SCAN_SET, 1936 ieee80211_chan2ieee(ic, ni->ni_chan)); 1937 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1938 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1939 } 1940 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1941 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1942 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1943 != 0) 1944 break; 1945 /* FALLTHRU */ 1946 case AWI_ST_SCAN_SCCMD: 1947 ic->ic_state = nstate; 1948 sc->sc_substate = AWI_ST_NONE; 1949 error = EINPROGRESS; 1950 break; 1951 default: 1952 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1953 stname[nstate], substname[sc->sc_substate])); 1954 sc->sc_substate = AWI_ST_NONE; 1955 error = EIO; 1956 break; 1957 } 1958 goto out; 1959 } 1960 1961 if (ostate == IEEE80211_S_SCAN) { 1962 /* set SSID and channel */ 1963 /* substate */ 1964 if (sc->sc_substate == AWI_ST_NONE) { 1965 sc->sc_nstate = nstate; /* next state in transition */ 1966 sc->sc_substate = AWI_ST_SUB_INIT; 1967 } 1968 ni = ic->ic_bss; 1969 switch (sc->sc_substate) { 1970 case AWI_ST_SUB_INIT: 1971 sc->sc_substate = AWI_ST_SUB_SETSS; 1972 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1973 ni->ni_bssid); 1974 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1975 AWI_ESS_ID_SIZE); 1976 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1977 IEEE80211_ELEMID_SSID; 1978 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1979 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1980 ni->ni_essid, ni->ni_esslen); 1981 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1982 ni->ni_intval); 1983 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1984 AWI_NOWAIT)) != 0) 1985 break; 1986 /* FALLTHRU */ 1987 case AWI_ST_SUB_SETSS: 1988 sc->sc_substate = AWI_ST_SUB_SYNC; 1989 if (sc->sc_cmd_inprog) { 1990 if ((error = awi_cmd_wait(sc)) != 0) 1991 break; 1992 } 1993 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1994 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1995 awi_write_1(sc, AWI_CA_SYNC_SET, 1996 IEEE80211_FH_CHANSET( 1997 ieee80211_chan2ieee(ic, ni->ni_chan))); 1998 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1999 IEEE80211_FH_CHANPAT( 2000 ieee80211_chan2ieee(ic, ni->ni_chan))); 2001 awi_write_1(sc, AWI_CA_SYNC_IDX, 2002 ni->ni_fhindex); 2003 awi_write_2(sc, AWI_CA_SYNC_DWELL, 2004 ni->ni_fhdwell); 2005 } else { 2006 awi_write_1(sc, AWI_CA_SYNC_SET, 2007 ieee80211_chan2ieee(ic, ni->ni_chan)); 2008 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 2009 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 2010 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 2011 } 2012 if (ic->ic_flags & IEEE80211_F_SIBSS) { 2013 memset(&ni->ni_tstamp, 0, 2014 sizeof(ni->ni_tstamp)); 2015 ni->ni_rstamp = 0; 2016 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 2017 } else 2018 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 2019 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 2020 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 2021 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 2022 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 2023 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2024 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 2025 != 0) 2026 break; 2027 /* FALLTHRU */ 2028 case AWI_ST_SUB_SYNC: 2029 sc->sc_substate = AWI_ST_NONE; 2030 if (ic->ic_flags & IEEE80211_F_SIBSS) { 2031 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 2032 AWI_MIB_MGT, AWI_WAIT)) != 0) 2033 break; 2034 IEEE80211_ADDR_COPY(ni->ni_bssid, 2035 &sc->sc_mib_mgt.aCurrent_BSS_ID); 2036 } else { 2037 if (nstate == IEEE80211_S_RUN) { 2038 sc->sc_rx_timer = 10; 2039 ifp->if_timer = 1; 2040 } 2041 } 2042 error = 0; 2043 break; 2044 default: 2045 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 2046 stname[nstate], substname[sc->sc_substate])); 2047 sc->sc_substate = AWI_ST_NONE; 2048 error = EIO; 2049 break; 2050 } 2051 goto out; 2052 } 2053 2054 sc->sc_substate = AWI_ST_NONE; 2055 2056 return (*sc->sc_newstate)(ic, nstate, arg); 2057 out: 2058 if (error != 0) { 2059 if (error == EINPROGRESS) 2060 error = 0; 2061 return error; 2062 } 2063 return (*sc->sc_newstate)(ic, nstate, arg); 2064 } 2065 2066 static void 2067 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 2068 struct ieee80211_node *ni, 2069 int subtype, int rssi, u_int32_t rstamp) 2070 { 2071 struct awi_softc *sc = ic->ic_ifp->if_softc; 2072 2073 /* probe request is handled by hardware */ 2074 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2075 return; 2076 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 2077 } 2078 2079 static int 2080 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 2081 int type, int arg) 2082 { 2083 struct awi_softc *sc = ic->ic_ifp->if_softc; 2084 2085 /* probe request is handled by hardware */ 2086 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2087 return 0; 2088 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2089 } 2090 2091 static struct mbuf * 2092 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2093 { 2094 struct ieee80211com *ic = &sc->sc_ic; 2095 struct ieee80211_node *ni = ic->ic_bss; 2096 struct ether_header *eh; 2097 struct ieee80211_frame *wh; 2098 2099 if (m->m_len < sizeof(struct ether_header)) { 2100 m = m_pullup(m, sizeof(struct ether_header)); 2101 if (m == NULL) 2102 return NULL; 2103 } 2104 eh = mtod(m, struct ether_header *); 2105 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2106 if (m == NULL) 2107 return NULL; 2108 wh = mtod(m, struct ieee80211_frame *); 2109 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2110 *(u_int16_t *)wh->i_dur = 0; 2111 *(u_int16_t *)wh->i_seq = 2112 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2113 ni->ni_txseqs[0]++; 2114 if (ic->ic_opmode == IEEE80211_M_IBSS || 2115 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2116 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2117 if (sc->sc_adhoc_ap) 2118 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2119 else 2120 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2121 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2122 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2123 } else { 2124 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2125 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2126 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2127 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2128 } 2129 return m; 2130 } 2131 2132 static struct mbuf * 2133 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2134 { 2135 struct ieee80211com *ic = &sc->sc_ic; 2136 struct ether_header eh; 2137 struct ieee80211_frame wh; 2138 struct llc *llc; 2139 2140 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2141 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2142 if (m == NULL) 2143 return NULL; 2144 } 2145 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2146 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2147 return m; 2148 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2149 m_adj(m, sizeof(eh) - sizeof(*llc)); 2150 if (ic->ic_opmode == IEEE80211_M_IBSS || 2151 ic->ic_opmode == IEEE80211_M_AHDEMO) 2152 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2153 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2154 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2155 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2156 llc->llc_control = LLC_UI; 2157 llc->llc_snap.org_code[0] = 0; 2158 llc->llc_snap.org_code[1] = 0; 2159 llc->llc_snap.org_code[2] = 0; 2160 llc->llc_snap.ether_type = eh.ether_type; 2161 return m; 2162 }
Cache object: 34005528ad3d61d730a518ab0696034a
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