awi.c revision 1.53
1 /* $NetBSD: awi.c,v 1.53 2003/07/06 20:01:17 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * Driver for AMD 802.11 firmware. 40 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 41 * 42 * More-or-less a generic ethernet-like if driver, with 802.11 gorp added. 43 */ 44 45 /* 46 * todo: 47 * - flush tx queue on resynch. 48 * - clear oactive on "down". 49 * - rewrite copy-into-mbuf code 50 * - mgmt state machine gets stuck retransmitting assoc requests. 51 * - multicast filter. 52 * - fix device reset so it's more likely to work 53 * - show status goo through ifmedia. 54 * 55 * more todo: 56 * - deal with more 802.11 frames. 57 * - send reassoc request 58 * - deal with reassoc response 59 * - send/deal with disassociation 60 * - deal with "full" access points (no room for me). 61 * - power save mode 62 * 63 * later: 64 * - SSID preferences 65 * - need ioctls for poking at the MIBs 66 * - implement ad-hoc mode (including bss creation). 67 * - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?) 68 * (focus on inf. mode since that will be needed for ietf) 69 * - deal with DH vs. FH versions of the card 70 * - deal with faster cards (2mb/s) 71 * - ?WEP goo (mmm, rc4) (it looks not particularly useful). 72 * - ifmedia revision. 73 * - common 802.11 mibish things. 74 * - common 802.11 media layer. 75 */ 76 77 /* 78 * Driver for AMD 802.11 PCnetMobile firmware. 79 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 80 * 81 * The initial version of the driver was written by 82 * Bill Sommerfeld <sommerfeld (at) netbsd.org>. 83 * Then the driver module completely rewritten to support cards with DS phy 84 * and to support adhoc mode by Atsushi Onoe <onoe (at) netbsd.org> 85 */ 86 87 #include <sys/cdefs.h> 88 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.53 2003/07/06 20:01:17 dyoung Exp $"); 89 90 #include "opt_inet.h" 91 #include "bpfilter.h" 92 93 #include <sys/param.h> 94 #include <sys/systm.h> 95 #include <sys/kernel.h> 96 #include <sys/mbuf.h> 97 #include <sys/malloc.h> 98 #include <sys/proc.h> 99 #include <sys/socket.h> 100 #include <sys/sockio.h> 101 #include <sys/errno.h> 102 #include <sys/device.h> 103 104 #include <net/if.h> 105 #include <net/if_dl.h> 106 #include <net/if_ether.h> 107 #include <net/if_media.h> 108 #include <net/if_llc.h> 109 #include <net/if_ieee80211.h> 110 111 #ifdef INET 112 #include <netinet/in.h> 113 #include <netinet/in_systm.h> 114 #ifdef __NetBSD__ 115 #include <netinet/if_inarp.h> 116 #else 117 #include <netinet/if_ether.h> 118 #endif 119 #endif 120 121 #if NBPFILTER > 0 122 #include <net/bpf.h> 123 #endif 124 125 #include <machine/cpu.h> 126 #include <machine/bus.h> 127 #include <machine/intr.h> 128 129 #include <dev/ic/am79c930reg.h> 130 #include <dev/ic/am79c930var.h> 131 #include <dev/ic/awireg.h> 132 #include <dev/ic/awivar.h> 133 134 static int awi_init(struct ifnet *); 135 static void awi_stop(struct ifnet *, int); 136 static void awi_start(struct ifnet *); 137 static void awi_watchdog(struct ifnet *); 138 static int awi_ioctl(struct ifnet *, u_long, caddr_t); 139 static int awi_media_change(struct ifnet *); 140 static void awi_media_status(struct ifnet *, struct ifmediareq *); 141 static int awi_mode_init(struct awi_softc *); 142 static void awi_rx_int(struct awi_softc *); 143 static void awi_tx_int(struct awi_softc *); 144 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 145 static int awi_hw_init(struct awi_softc *); 146 static int awi_init_mibs(struct awi_softc *); 147 static int awi_chan_check(void *, u_char *); 148 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 149 static int awi_cmd(struct awi_softc *, u_int8_t, int); 150 static int awi_cmd_wait(struct awi_softc *); 151 static void awi_cmd_done(struct awi_softc *); 152 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 153 static int awi_lock(struct awi_softc *); 154 static void awi_unlock(struct awi_softc *); 155 static int awi_intr_lock(struct awi_softc *); 156 static void awi_intr_unlock(struct awi_softc *); 157 static int awi_newstate(void *, enum ieee80211_state); 158 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 159 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 160 161 /* unalligned little endian access */ 162 #define LE_READ_2(p) \ 163 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 164 #define LE_READ_4(p) \ 165 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 166 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 167 #define LE_WRITE_2(p, v) \ 168 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 169 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 170 #define LE_WRITE_4(p, v) \ 171 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 172 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 173 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 174 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 175 176 struct awi_chanset awi_chanset[] = { 177 /* PHY type domain min max def */ 178 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 179 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 180 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 181 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 182 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 183 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 184 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 185 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 186 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 187 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 188 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 189 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 190 { 0, 0 } 191 }; 192 193 #ifdef AWI_DEBUG 194 int awi_debug; 195 196 #define DPRINTF(X) if (awi_debug) printf X 197 #define DPRINTF2(X) if (awi_debug > 1) printf X 198 #else 199 #define DPRINTF(X) 200 #define DPRINTF2(X) 201 #endif 202 203 int 204 awi_attach(struct awi_softc *sc) 205 { 206 struct ieee80211com *ic = &sc->sc_ic; 207 struct ifnet *ifp = &ic->ic_if; 208 int s, i, error, nrate; 209 int mword; 210 struct ifmediareq imr; 211 212 s = splnet(); 213 sc->sc_busy = 1; 214 sc->sc_substate = AWI_ST_NONE; 215 if ((error = awi_hw_init(sc)) != 0) { 216 sc->sc_invalid = 1; 217 splx(s); 218 return error; 219 } 220 error = awi_init_mibs(sc); 221 if (error != 0) { 222 sc->sc_invalid = 1; 223 splx(s); 224 return error; 225 } 226 ifp->if_softc = sc; 227 ifp->if_flags = 228 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | IFF_NOTRAILERS; 229 ifp->if_ioctl = awi_ioctl; 230 ifp->if_start = awi_start; 231 ifp->if_init = awi_init; 232 ifp->if_stop = awi_stop; 233 ifp->if_watchdog = awi_watchdog; 234 IFQ_SET_READY(&ifp->if_snd); 235 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 236 237 ic->ic_flags = 238 IEEE80211_F_HASWEP | IEEE80211_F_HASIBSS | IEEE80211_F_HASHOSTAP; 239 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) 240 ic->ic_phytype = IEEE80211_T_FH; 241 else { 242 ic->ic_phytype = IEEE80211_T_DS; 243 ic->ic_flags |= IEEE80211_F_HASAHDEMO; 244 } 245 ic->ic_opmode = IEEE80211_M_STA; 246 ic->ic_state = IEEE80211_S_INIT; 247 ic->ic_newstate = awi_newstate; 248 ic->ic_chancheck = awi_chan_check; 249 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 250 memcpy(ic->ic_sup_rates, sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 251 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 252 253 printf("%s: IEEE802.11 %s (firmware %s)\n", sc->sc_dev.dv_xname, 254 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 255 printf("%s: 802.11 address: %s\n", sc->sc_dev.dv_xname, 256 ether_sprintf(ic->ic_myaddr)); 257 258 /* probe request is handled by hardware */ 259 ic->ic_send_mgmt[IEEE80211_FC0_SUBTYPE_PROBE_REQ 260 >> IEEE80211_FC0_SUBTYPE_SHIFT] = NULL; 261 ic->ic_recv_mgmt[IEEE80211_FC0_SUBTYPE_PROBE_REQ 262 >> IEEE80211_FC0_SUBTYPE_SHIFT] = NULL; 263 264 if_attach(ifp); 265 ieee80211_ifattach(ifp); 266 267 /* Melco compatibility mode. */ 268 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 269 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 270 ADD(IFM_AUTO, IFM_FLAG0); 271 272 for (i = 0; i < nrate; i++) { 273 mword = ieee80211_rate2media(ic->ic_sup_rates[i], 274 ic->ic_phytype); 275 if (mword == 0) 276 continue; 277 ADD(mword, IFM_FLAG0); 278 } 279 #undef ADD 280 281 /* override defaults */ 282 ic->ic_media.ifm_status = awi_media_status; 283 ic->ic_media.ifm_change = awi_media_change; 284 285 awi_media_status(ifp, &imr); 286 ifmedia_set(&ic->ic_media, imr.ifm_active); 287 288 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 289 printf("%s: WARNING: unable to establish shutdown hook\n", 290 sc->sc_dev.dv_xname); 291 if ((sc->sc_powerhook = powerhook_establish(awi_power, sc)) == NULL) 292 printf("%s: WARNING: unable to establish power hook\n", 293 sc->sc_dev.dv_xname); 294 sc->sc_attached = 1; 295 splx(s); 296 297 /* ready to accept ioctl */ 298 awi_unlock(sc); 299 300 return 0; 301 } 302 303 int 304 awi_detach(struct awi_softc *sc) 305 { 306 struct ifnet *ifp = &sc->sc_ic.ic_if; 307 int s; 308 309 if (!sc->sc_attached) 310 return 0; 311 312 s = splnet(); 313 sc->sc_invalid = 1; 314 awi_stop(ifp, 1); 315 while (sc->sc_sleep_cnt > 0) { 316 wakeup(sc); 317 (void)tsleep(sc, PWAIT, "awidet", 1); 318 } 319 ieee80211_ifdetach(ifp); 320 if_detach(ifp); 321 shutdownhook_disestablish(sc->sc_sdhook); 322 powerhook_disestablish(sc->sc_powerhook); 323 splx(s); 324 return 0; 325 } 326 327 int 328 awi_activate(struct device *self, enum devact act) 329 { 330 struct awi_softc *sc = (struct awi_softc *)self; 331 struct ifnet *ifp = &sc->sc_ic.ic_if; 332 int s, error = 0; 333 334 s = splnet(); 335 switch (act) { 336 case DVACT_ACTIVATE: 337 error = EOPNOTSUPP; 338 break; 339 case DVACT_DEACTIVATE: 340 sc->sc_invalid = 1; 341 if_deactivate(ifp); 342 break; 343 } 344 splx(s); 345 return error; 346 } 347 348 void 349 awi_power(int why, void *arg) 350 { 351 struct awi_softc *sc = arg; 352 struct ifnet *ifp = &sc->sc_ic.ic_if; 353 int s; 354 int ocansleep; 355 356 DPRINTF(("awi_power: %d\n", why)); 357 s = splnet(); 358 ocansleep = sc->sc_cansleep; 359 sc->sc_cansleep = 0; 360 switch (why) { 361 case PWR_SUSPEND: 362 case PWR_STANDBY: 363 awi_stop(ifp, 1); 364 break; 365 case PWR_RESUME: 366 if (ifp->if_flags & IFF_UP) { 367 awi_init(ifp); 368 (void)awi_intr(sc); /* make sure */ 369 } 370 break; 371 case PWR_SOFTSUSPEND: 372 case PWR_SOFTSTANDBY: 373 case PWR_SOFTRESUME: 374 break; 375 } 376 sc->sc_cansleep = ocansleep; 377 splx(s); 378 } 379 380 void 381 awi_shutdown(void *arg) 382 { 383 struct awi_softc *sc = arg; 384 struct ifnet *ifp = &sc->sc_ic.ic_if; 385 386 if (sc->sc_attached) 387 awi_stop(ifp, 1); 388 } 389 390 int 391 awi_intr(void *arg) 392 { 393 struct awi_softc *sc = arg; 394 u_int16_t status; 395 int error, handled = 0, ocansleep; 396 #ifdef AWI_DEBUG 397 static const char *intname[] = { 398 "CMD", "RX", "TX", "SCAN_CMPLT", 399 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 400 "TXDATA", "TXBCAST", "TXPS", "TXCF", 401 "TXMGT", "#13", "RXDATA", "RXMGT" 402 }; 403 #endif 404 405 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) 406 return 0; 407 408 am79c930_gcr_setbits(&sc->sc_chip, 409 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 410 awi_write_1(sc, AWI_DIS_PWRDN, 1); 411 ocansleep = sc->sc_cansleep; 412 sc->sc_cansleep = 0; 413 414 for (;;) { 415 if ((error = awi_intr_lock(sc)) != 0) 416 break; 417 status = awi_read_1(sc, AWI_INTSTAT); 418 awi_write_1(sc, AWI_INTSTAT, 0); 419 awi_write_1(sc, AWI_INTSTAT, 0); 420 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 421 awi_write_1(sc, AWI_INTSTAT2, 0); 422 DELAY(10); 423 awi_intr_unlock(sc); 424 if (!sc->sc_cmd_inprog) 425 status &= ~AWI_INT_CMD; /* make sure */ 426 if (status == 0) 427 break; 428 #ifdef AWI_DEBUG 429 if (awi_debug > 1) { 430 int i; 431 432 printf("awi_intr: status 0x%04x", status); 433 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 434 i++) { 435 if (status & (1 << i)) 436 printf(" %s", intname[i]); 437 } 438 printf("\n"); 439 } 440 #endif 441 handled = 1; 442 if (status & AWI_INT_RX) 443 awi_rx_int(sc); 444 if (status & AWI_INT_TX) 445 awi_tx_int(sc); 446 if (status & AWI_INT_CMD) 447 awi_cmd_done(sc); 448 if (status & AWI_INT_SCAN_CMPLT) { 449 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 450 sc->sc_substate == AWI_ST_NONE) 451 ieee80211_next_scan(&sc->sc_ic.ic_if); 452 } 453 } 454 sc->sc_cansleep = ocansleep; 455 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 456 awi_write_1(sc, AWI_DIS_PWRDN, 0); 457 return handled; 458 } 459 460 static int 461 awi_init(struct ifnet *ifp) 462 { 463 struct awi_softc *sc = ifp->if_softc; 464 struct ieee80211com *ic = &sc->sc_ic; 465 struct ieee80211_node *ni = &ic->ic_bss; 466 int i, error; 467 468 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 469 if (sc->sc_enabled) { 470 awi_stop(ifp, 0); 471 } else { 472 if (sc->sc_enable) 473 (*sc->sc_enable)(sc); 474 sc->sc_enabled = 1; 475 if ((error = awi_hw_init(sc)) != 0) { 476 awi_stop(ifp, 1); 477 return error; 478 } 479 } 480 ic->ic_state = IEEE80211_S_INIT; 481 482 ic->ic_flags &= ~IEEE80211_F_IBSSON; 483 switch (ic->ic_opmode) { 484 case IEEE80211_M_STA: 485 sc->sc_mib_local.Network_Mode = 1; 486 sc->sc_mib_local.Acting_as_AP = 0; 487 break; 488 case IEEE80211_M_IBSS: 489 ic->ic_flags |= IEEE80211_F_IBSSON; 490 case IEEE80211_M_AHDEMO: 491 sc->sc_mib_local.Network_Mode = 0; 492 sc->sc_mib_local.Acting_as_AP = 0; 493 break; 494 case IEEE80211_M_HOSTAP: 495 sc->sc_mib_local.Network_Mode = 1; 496 sc->sc_mib_local.Acting_as_AP = 1; 497 break; 498 case IEEE80211_M_MONITOR: 499 return ENODEV; 500 } 501 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 502 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 503 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 504 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 505 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 506 ic->ic_des_esslen); 507 508 if ((error = awi_mode_init(sc)) != 0) { 509 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 510 awi_stop(ifp, 1); 511 return error; 512 } 513 514 /* start transmitter */ 515 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 516 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 517 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 518 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 519 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 520 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 521 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 522 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 523 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 524 awi_write_4(sc, AWI_CA_TX_MGT, 0); 525 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 526 awi_write_4(sc, AWI_CA_TX_PS, 0); 527 awi_write_4(sc, AWI_CA_TX_CF, 0); 528 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 529 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 530 awi_stop(ifp, 1); 531 return error; 532 } 533 534 /* start receiver */ 535 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 536 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 537 awi_stop(ifp, 1); 538 return error; 539 } 540 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 541 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 542 543 ifp->if_flags |= IFF_RUNNING; 544 ifp->if_flags &= ~IFF_OACTIVE; 545 546 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 547 ic->ic_opmode == IEEE80211_M_HOSTAP) { 548 ni->ni_chan = ic->ic_ibss_chan; 549 ni->ni_intval = ic->ic_lintval; 550 ni->ni_rssi = 0; 551 ni->ni_rstamp = 0; 552 memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 553 ni->ni_nrate = 0; 554 for (i = 0; i < IEEE80211_RATE_SIZE; i++) { 555 if (ic->ic_sup_rates[i]) 556 ni->ni_rates[ni->ni_nrate++] = 557 ic->ic_sup_rates[i]; 558 } 559 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 560 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 561 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 562 ni->ni_esslen = ic->ic_des_esslen; 563 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 564 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 565 if (ic->ic_phytype == IEEE80211_T_FH) { 566 ni->ni_fhdwell = 200; /* XXX */ 567 ni->ni_fhindex = 1; 568 } 569 } else { 570 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 571 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 572 ni->ni_esslen = 0; 573 } 574 if (ic->ic_flags & IEEE80211_F_WEPON) 575 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 576 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 577 ic->ic_flags |= IEEE80211_F_SIBSS; 578 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 579 sc->sc_substate = AWI_ST_NONE; 580 ieee80211_new_state(&ic->ic_if, IEEE80211_S_RUN, -1); 581 } else { 582 ni->ni_chan = sc->sc_cur_chan; 583 ieee80211_new_state(&ic->ic_if, IEEE80211_S_SCAN, -1); 584 } 585 return 0; 586 } 587 588 static void 589 awi_stop(struct ifnet *ifp, int disable) 590 { 591 struct awi_softc *sc = ifp->if_softc; 592 593 if (!sc->sc_enabled) 594 return; 595 596 DPRINTF(("awi_stop(%d)\n", disable)); 597 598 ieee80211_new_state(&sc->sc_ic.ic_if, IEEE80211_S_INIT, -1); 599 600 if (!sc->sc_invalid) { 601 if (sc->sc_cmd_inprog) 602 (void)awi_cmd_wait(sc); 603 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 604 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 605 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 606 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 607 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 608 awi_write_1(sc, AWI_CA_FTX_PS, 0); 609 awi_write_1(sc, AWI_CA_FTX_CF, 0); 610 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 611 } 612 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 613 ifp->if_timer = 0; 614 sc->sc_tx_timer = sc->sc_rx_timer = 0; 615 if (sc->sc_rxpend != NULL) { 616 m_freem(sc->sc_rxpend); 617 sc->sc_rxpend = NULL; 618 } 619 IFQ_PURGE(&ifp->if_snd); 620 621 if (disable) { 622 if (sc->sc_disable) 623 (*sc->sc_disable)(sc); 624 sc->sc_enabled = 0; 625 } 626 } 627 628 static void 629 awi_start(struct ifnet *ifp) 630 { 631 struct awi_softc *sc = ifp->if_softc; 632 struct ieee80211com *ic = &sc->sc_ic; 633 struct ieee80211_frame *wh; 634 struct mbuf *m, *m0; 635 int len, dowep; 636 u_int32_t txd, frame, ntxd; 637 u_int8_t rate; 638 639 if (!sc->sc_enabled || sc->sc_invalid) 640 return; 641 642 for (;;) { 643 txd = sc->sc_txnext; 644 IF_POLL(&ic->ic_mgtq, m0); 645 dowep = 0; 646 if (m0 != NULL) { 647 len = m0->m_pkthdr.len; 648 if (awi_next_txd(sc, len, &frame, &ntxd)) { 649 ifp->if_flags |= IFF_OACTIVE; 650 break; 651 } 652 IF_DEQUEUE(&ic->ic_mgtq, m0); 653 } else { 654 if (ic->ic_state != IEEE80211_S_RUN) 655 break; 656 IFQ_POLL(&ifp->if_snd, m0); 657 if (m0 == NULL) 658 break; 659 /* 660 * Need to calculate the real length to determine 661 * if the transmit buffer has a room for the packet. 662 */ 663 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 664 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 665 len += sizeof(struct llc) - 666 sizeof(struct ether_header); 667 if (ic->ic_flags & IEEE80211_F_WEPON) { 668 dowep = 1; 669 len += IEEE80211_WEP_IVLEN + 670 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 671 } 672 if (awi_next_txd(sc, len, &frame, &ntxd)) { 673 ifp->if_flags |= IFF_OACTIVE; 674 break; 675 } 676 IFQ_DEQUEUE(&ifp->if_snd, m0); 677 ifp->if_opackets++; 678 #if NBPFILTER > 0 679 if (ifp->if_bpf) 680 bpf_mtap(ifp->if_bpf, m0); 681 #endif 682 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 683 m0 = awi_ether_encap(sc, m0); 684 else 685 m0 = ieee80211_encap(ifp, m0); 686 if (m0 == NULL) { 687 ifp->if_oerrors++; 688 continue; 689 } 690 wh = mtod(m0, struct ieee80211_frame *); 691 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 692 (ic->ic_opmode == IEEE80211_M_HOSTAP || 693 ic->ic_opmode == IEEE80211_M_IBSS) && 694 sc->sc_adhoc_ap == 0 && 695 (ifp->if_flags & IFF_LINK0) == 0 && 696 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 697 IEEE80211_FC0_TYPE_DATA && 698 ieee80211_find_node(ic, wh->i_addr1) == NULL) { 699 m_freem(m0); 700 ifp->if_oerrors++; 701 continue; 702 } 703 } 704 #if NBPFILTER > 0 705 if (ic->ic_rawbpf) 706 bpf_mtap(ic->ic_rawbpf, m0); 707 #endif 708 if (dowep) { 709 if ((m0 = ieee80211_wep_crypt(ifp, m0, 1)) == NULL) { 710 ifp->if_oerrors++; 711 continue; 712 } 713 } 714 #ifdef DIAGNOSTIC 715 if (m0->m_pkthdr.len != len) { 716 printf("%s: length %d should be %d\n", 717 ifp->if_xname, m0->m_pkthdr.len, len); 718 m_freem(m0); 719 ifp->if_oerrors++; 720 continue; 721 } 722 #endif 723 724 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 725 ieee80211_dump_pkt(m0->m_data, m0->m_len, 726 ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 727 IEEE80211_RATE_VAL, -1); 728 729 for (m = m0, len = 0; m != NULL; m = m->m_next) { 730 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 731 m->m_len); 732 len += m->m_len; 733 } 734 m_freem(m0); 735 rate = (ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 736 IEEE80211_RATE_VAL) * 5; 737 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 738 awi_write_4(sc, txd + AWI_TXD_START, frame); 739 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 740 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 741 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 742 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 743 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 744 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 745 sc->sc_txnext = ntxd; 746 747 sc->sc_tx_timer = 5; 748 ifp->if_timer = 1; 749 } 750 } 751 752 static void 753 awi_watchdog(struct ifnet *ifp) 754 { 755 struct awi_softc *sc = ifp->if_softc; 756 u_int32_t prevdone; 757 int ocansleep; 758 759 ifp->if_timer = 0; 760 if (!sc->sc_enabled || sc->sc_invalid) 761 return; 762 763 ocansleep = sc->sc_cansleep; 764 sc->sc_cansleep = 0; 765 if (sc->sc_tx_timer) { 766 if (--sc->sc_tx_timer == 0) { 767 printf("%s: device timeout\n", ifp->if_xname); 768 prevdone = sc->sc_txdone; 769 awi_tx_int(sc); 770 if (sc->sc_txdone == prevdone) { 771 ifp->if_oerrors++; 772 awi_init(ifp); 773 goto out; 774 } 775 } 776 ifp->if_timer = 1; 777 } 778 if (sc->sc_rx_timer) { 779 if (--sc->sc_rx_timer == 0) { 780 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 781 ieee80211_new_state(ifp, IEEE80211_S_SCAN, -1); 782 goto out; 783 } 784 } else 785 ifp->if_timer = 1; 786 } 787 /* TODO: rate control */ 788 ieee80211_watchdog(ifp); 789 out: 790 sc->sc_cansleep = ocansleep; 791 } 792 793 static int 794 awi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 795 { 796 struct awi_softc *sc = ifp->if_softc; 797 struct ifreq *ifr = (struct ifreq *)data; 798 int s, error; 799 800 s = splnet(); 801 /* serialize ioctl, since we may sleep */ 802 if ((error = awi_lock(sc)) != 0) 803 goto cantlock; 804 805 switch (cmd) { 806 case SIOCSIFFLAGS: 807 if (ifp->if_flags & IFF_UP) { 808 if (sc->sc_enabled) { 809 /* 810 * To avoid rescanning another access point, 811 * do not call awi_init() here. Instead, 812 * only reflect promisc mode settings. 813 */ 814 error = awi_mode_init(sc); 815 } else 816 error = awi_init(ifp); 817 } else if (sc->sc_enabled) 818 awi_stop(ifp, 1); 819 break; 820 case SIOCSIFMEDIA: 821 case SIOCGIFMEDIA: 822 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 823 break; 824 case SIOCADDMULTI: 825 case SIOCDELMULTI: 826 error = (cmd == SIOCADDMULTI) ? 827 ether_addmulti(ifr, &sc->sc_ic.ic_ec) : 828 ether_delmulti(ifr, &sc->sc_ic.ic_ec); 829 if (error == ENETRESET) { 830 /* do not rescan */ 831 if (sc->sc_enabled) 832 error = awi_mode_init(sc); 833 else 834 error = 0; 835 } 836 break; 837 default: 838 error = ieee80211_ioctl(ifp, cmd, data); 839 if (error == ENETRESET) { 840 if (sc->sc_enabled) 841 error = awi_init(ifp); 842 else 843 error = 0; 844 } 845 break; 846 } 847 awi_unlock(sc); 848 cantlock: 849 splx(s); 850 return error; 851 } 852 853 /* 854 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 855 */ 856 static int 857 awi_media_change(struct ifnet *ifp) 858 { 859 struct awi_softc *sc = ifp->if_softc; 860 struct ieee80211com *ic = &sc->sc_ic; 861 struct ifmedia_entry *ime; 862 enum ieee80211_opmode newmode; 863 int i, rate, newadhoc_ap, error = 0; 864 865 ime = ic->ic_media.ifm_cur; 866 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 867 i = -1; 868 } else { 869 rate = ieee80211_media2rate(ime->ifm_media, ic->ic_phytype); 870 if (rate == 0) 871 return EINVAL; 872 for (i = 0; i < IEEE80211_RATE_SIZE; i++) { 873 if ((ic->ic_sup_rates[i] & IEEE80211_RATE_VAL) == rate) 874 break; 875 } 876 if (i == IEEE80211_RATE_SIZE) 877 return EINVAL; 878 } 879 if (ic->ic_fixed_rate != i) { 880 ic->ic_fixed_rate = i; 881 error = ENETRESET; 882 } 883 884 /* 885 * combination of mediaopt 886 * 887 * hostap adhoc flag0 opmode adhoc_ap comment 888 * + - - HOSTAP 0 HostAP 889 * - + - IBSS 0 IBSS 890 * - + + AHDEMO 0 WaveLAN adhoc 891 * - - + IBSS 1 Melco old Sta 892 * also LINK0 893 * - - - STA 0 Infra Station 894 */ 895 newadhoc_ap = 0; 896 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 897 newmode = IEEE80211_M_HOSTAP; 898 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 899 if (ic->ic_phytype == IEEE80211_T_DS && 900 (ime->ifm_media & IFM_FLAG0)) 901 newmode = IEEE80211_M_AHDEMO; 902 else 903 newmode = IEEE80211_M_IBSS; 904 } else if (ime->ifm_media & IFM_FLAG0) { 905 newmode = IEEE80211_M_IBSS; 906 newadhoc_ap = 1; 907 } else 908 newmode = IEEE80211_M_STA; 909 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 910 ic->ic_opmode = newmode; 911 sc->sc_adhoc_ap = newadhoc_ap; 912 error = ENETRESET; 913 } 914 915 if (error == ENETRESET) { 916 if (sc->sc_enabled) 917 error = awi_init(ifp); 918 else 919 error = 0; 920 } 921 return error; 922 } 923 924 static void 925 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 926 { 927 struct awi_softc *sc = ifp->if_softc; 928 struct ieee80211com *ic = &sc->sc_ic; 929 int rate; 930 931 imr->ifm_status = IFM_AVALID; 932 if (ic->ic_state == IEEE80211_S_RUN) 933 imr->ifm_status |= IFM_ACTIVE; 934 imr->ifm_active = IFM_IEEE80211; 935 if (ic->ic_state == IEEE80211_S_RUN) 936 rate = ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 937 IEEE80211_RATE_VAL; 938 else { 939 if (ic->ic_fixed_rate == -1) 940 rate = 0; 941 else 942 rate = ic->ic_sup_rates[ic->ic_fixed_rate] & 943 IEEE80211_RATE_VAL; 944 } 945 imr->ifm_active |= ieee80211_rate2media(rate, ic->ic_phytype); 946 switch (ic->ic_opmode) { 947 case IEEE80211_M_MONITOR: /* we should never reach here */ 948 break; 949 case IEEE80211_M_STA: 950 break; 951 case IEEE80211_M_IBSS: 952 if (sc->sc_adhoc_ap) 953 imr->ifm_active |= IFM_FLAG0; 954 else 955 imr->ifm_active |= IFM_IEEE80211_ADHOC; 956 break; 957 case IEEE80211_M_AHDEMO: 958 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 959 break; 960 case IEEE80211_M_HOSTAP: 961 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 962 break; 963 } 964 } 965 966 static int 967 awi_mode_init(struct awi_softc *sc) 968 { 969 struct ifnet *ifp = &sc->sc_ic.ic_if; 970 int n, error; 971 struct ether_multi *enm; 972 struct ether_multistep step; 973 974 /* reinitialize muticast filter */ 975 n = 0; 976 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 977 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 978 (ifp->if_flags & IFF_PROMISC)) { 979 sc->sc_mib_mac.aPromiscuous_Enable = 1; 980 goto set_mib; 981 } 982 sc->sc_mib_mac.aPromiscuous_Enable = 0; 983 ETHER_FIRST_MULTI(step, &sc->sc_ic.ic_ec, enm); 984 while (enm != NULL) { 985 if (n == AWI_GROUP_ADDR_SIZE || 986 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 987 goto set_mib; 988 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 989 enm->enm_addrlo); 990 n++; 991 ETHER_NEXT_MULTI(step, enm); 992 } 993 for (; n < AWI_GROUP_ADDR_SIZE; n++) 994 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 995 IEEE80211_ADDR_LEN); 996 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 997 998 set_mib: 999 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1000 ifp->if_flags &= ~IFF_ALLMULTI; 1001 else 1002 ifp->if_flags |= IFF_ALLMULTI; 1003 sc->sc_mib_mgt.Wep_Required = 1004 (sc->sc_ic.ic_flags & IEEE80211_F_WEPON) ? AWI_WEP_ON : AWI_WEP_OFF; 1005 1006 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1007 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1008 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1009 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1010 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1011 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1012 return error; 1013 } 1014 return 0; 1015 } 1016 1017 static void 1018 awi_rx_int(struct awi_softc *sc) 1019 { 1020 struct ifnet *ifp = &sc->sc_ic.ic_if; 1021 u_int8_t state, rate, rssi; 1022 u_int16_t len; 1023 u_int32_t frame, next, rstamp, rxoff; 1024 struct mbuf *m; 1025 1026 rxoff = sc->sc_rxdoff; 1027 for (;;) { 1028 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1029 if (state & AWI_RXD_ST_OWN) 1030 break; 1031 if (!(state & AWI_RXD_ST_CONSUMED)) { 1032 if (sc->sc_substate != AWI_ST_NONE) 1033 goto rx_next; 1034 if (state & AWI_RXD_ST_RXERROR) { 1035 ifp->if_ierrors++; 1036 goto rx_next; 1037 } 1038 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1039 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1040 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1041 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1042 0x7fff; 1043 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1044 m = awi_devget(sc, frame, len); 1045 if (m == NULL) { 1046 ifp->if_ierrors++; 1047 goto rx_next; 1048 } 1049 if (state & AWI_RXD_ST_LF) { 1050 /* TODO check my bss */ 1051 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1052 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1053 sc->sc_rx_timer = 10; 1054 ifp->if_timer = 1; 1055 } 1056 if ((ifp->if_flags & IFF_DEBUG) && 1057 (ifp->if_flags & IFF_LINK2)) 1058 ieee80211_dump_pkt(m->m_data, m->m_len, 1059 rate / 5, rssi); 1060 if ((ifp->if_flags & IFF_LINK0) || 1061 sc->sc_adhoc_ap) 1062 m = awi_ether_modcap(sc, m); 1063 if (m == NULL) 1064 ifp->if_ierrors++; 1065 else 1066 ieee80211_input(ifp, m, rssi, rstamp); 1067 } else 1068 sc->sc_rxpend = m; 1069 rx_next: 1070 state |= AWI_RXD_ST_CONSUMED; 1071 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1072 } 1073 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1074 if (next & AWI_RXD_NEXT_LAST) 1075 break; 1076 /* make sure the next pointer is correct */ 1077 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1078 break; 1079 state |= AWI_RXD_ST_OWN; 1080 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1081 rxoff = next & 0x7fff; 1082 } 1083 sc->sc_rxdoff = rxoff; 1084 } 1085 1086 static void 1087 awi_tx_int(struct awi_softc *sc) 1088 { 1089 struct ifnet *ifp = &sc->sc_ic.ic_if; 1090 u_int8_t flags; 1091 1092 while (sc->sc_txdone != sc->sc_txnext) { 1093 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1094 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1095 break; 1096 if (flags & AWI_TXD_ST_ERROR) 1097 ifp->if_oerrors++; 1098 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1099 0x7fff; 1100 } 1101 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1102 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1103 sc->sc_tx_timer = 0; 1104 ifp->if_flags &= ~IFF_OACTIVE; 1105 awi_start(ifp); 1106 } 1107 1108 static struct mbuf * 1109 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1110 { 1111 struct ifnet *ifp = &sc->sc_ic.ic_if; 1112 struct mbuf *m; 1113 struct mbuf *top, **mp; 1114 u_int tlen; 1115 1116 top = sc->sc_rxpend; 1117 mp = ⊤ 1118 if (top != NULL) { 1119 sc->sc_rxpend = NULL; 1120 top->m_pkthdr.len += len; 1121 m = top; 1122 while (*mp != NULL) { 1123 m = *mp; 1124 mp = &m->m_next; 1125 } 1126 if (m->m_flags & M_EXT) 1127 tlen = m->m_ext.ext_size; 1128 else if (m->m_flags & M_PKTHDR) 1129 tlen = MHLEN; 1130 else 1131 tlen = MLEN; 1132 tlen -= m->m_len; 1133 if (tlen > len) 1134 tlen = len; 1135 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1136 off += tlen; 1137 len -= tlen; 1138 } 1139 1140 while (len > 0) { 1141 if (top == NULL) { 1142 MGETHDR(m, M_DONTWAIT, MT_DATA); 1143 if (m == NULL) 1144 return NULL; 1145 m->m_pkthdr.rcvif = ifp; 1146 m->m_pkthdr.len = len; 1147 m->m_len = MHLEN; 1148 m->m_flags |= M_HASFCS; 1149 } else { 1150 MGET(m, M_DONTWAIT, MT_DATA); 1151 if (m == NULL) { 1152 m_freem(top); 1153 return NULL; 1154 } 1155 m->m_len = MLEN; 1156 } 1157 if (len >= MINCLSIZE) { 1158 MCLGET(m, M_DONTWAIT); 1159 if (m->m_flags & M_EXT) 1160 m->m_len = m->m_ext.ext_size; 1161 } 1162 if (top == NULL) { 1163 int hdrlen = sizeof(struct ieee80211_frame) + 1164 sizeof(struct llc); 1165 caddr_t newdata = (caddr_t) 1166 ALIGN(m->m_data + hdrlen) - hdrlen; 1167 m->m_len -= newdata - m->m_data; 1168 m->m_data = newdata; 1169 } 1170 if (m->m_len > len) 1171 m->m_len = len; 1172 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1173 off += m->m_len; 1174 len -= m->m_len; 1175 *mp = m; 1176 mp = &m->m_next; 1177 } 1178 return top; 1179 } 1180 1181 /* 1182 * Initialize hardware and start firmware to accept commands. 1183 * Called everytime after power on firmware. 1184 */ 1185 1186 static int 1187 awi_hw_init(struct awi_softc *sc) 1188 { 1189 u_int8_t status; 1190 u_int16_t intmask; 1191 int i, error; 1192 1193 sc->sc_enab_intr = 0; 1194 sc->sc_invalid = 0; /* XXX: really? */ 1195 awi_drvstate(sc, AWI_DRV_RESET); 1196 1197 /* reset firmware */ 1198 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1199 DELAY(100); 1200 awi_write_1(sc, AWI_SELFTEST, 0); 1201 awi_write_1(sc, AWI_CMD, 0); 1202 awi_write_1(sc, AWI_BANNER, 0); 1203 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1204 DELAY(100); 1205 1206 /* wait for selftest completion */ 1207 for (i = 0; ; i++) { 1208 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1209 printf("%s: failed to complete selftest (timeout)\n", 1210 sc->sc_dev.dv_xname); 1211 return ENXIO; 1212 } 1213 status = awi_read_1(sc, AWI_SELFTEST); 1214 if ((status & 0xf0) == 0xf0) 1215 break; 1216 if (sc->sc_cansleep) { 1217 sc->sc_sleep_cnt++; 1218 (void)tsleep(sc, PWAIT, "awitst", 1); 1219 sc->sc_sleep_cnt--; 1220 } else { 1221 DELAY(1000*1000/hz); 1222 } 1223 } 1224 if (status != AWI_SELFTEST_PASSED) { 1225 printf("%s: failed to complete selftest (code %x)\n", 1226 sc->sc_dev.dv_xname, status); 1227 return ENXIO; 1228 } 1229 1230 /* check banner to confirm firmware write it */ 1231 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1232 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1233 printf("%s: failed to complete selftest (bad banner)\n", 1234 sc->sc_dev.dv_xname); 1235 for (i = 0; i < AWI_BANNER_LEN; i++) 1236 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1237 printf("\n"); 1238 return ENXIO; 1239 } 1240 1241 /* initializing interrupt */ 1242 sc->sc_enab_intr = 1; 1243 error = awi_intr_lock(sc); 1244 if (error) 1245 return error; 1246 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1247 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1248 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1249 awi_write_1(sc, AWI_INTMASK2, 0); 1250 awi_write_1(sc, AWI_INTSTAT, 0); 1251 awi_write_1(sc, AWI_INTSTAT2, 0); 1252 awi_intr_unlock(sc); 1253 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1254 1255 /* issuing interface test command */ 1256 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1257 if (error) { 1258 printf("%s: failed to complete selftest", sc->sc_dev.dv_xname); 1259 if (error == ENXIO) 1260 printf(" (no hardware)\n"); 1261 else if (error != EWOULDBLOCK) 1262 printf(" (error %d)\n", error); 1263 else if (sc->sc_cansleep) 1264 printf(" (lost interrupt)\n"); 1265 else 1266 printf(" (command timeout)\n"); 1267 return error; 1268 } 1269 1270 /* Initialize VBM */ 1271 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1272 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1273 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1274 return 0; 1275 } 1276 1277 /* 1278 * Extract the factory default MIB value from firmware and assign the driver 1279 * default value. 1280 * Called once at attaching the interface. 1281 */ 1282 1283 static int 1284 awi_init_mibs(struct awi_softc *sc) 1285 { 1286 int i, error; 1287 struct awi_chanset *cs; 1288 1289 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1290 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1291 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1292 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1293 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1294 printf("%s: failed to get default mib value (error %d)\n", 1295 sc->sc_dev.dv_xname, error); 1296 return error; 1297 } 1298 1299 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1300 for (cs = awi_chanset; ; cs++) { 1301 if (cs->cs_type == 0) { 1302 printf("%s: failed to set available channel\n", 1303 sc->sc_dev.dv_xname); 1304 return ENXIO; 1305 } 1306 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1307 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1308 break; 1309 } 1310 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1311 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1312 setbit(sc->sc_ic.ic_chan_avail, 1313 IEEE80211_FH_CHAN(i % 3 + 1, i)); 1314 /* 1315 * According to the IEEE 802.11 specification, 1316 * hop pattern parameter for FH phy should be 1317 * incremented by 3 for given hop chanset, i.e., 1318 * the chanset parameter is calculated for given 1319 * hop patter. However, BayStack 650 Access Points 1320 * apparently use fixed hop chanset parameter value 1321 * 1 for any hop pattern. So we also try this 1322 * combination of hop chanset and pattern. 1323 */ 1324 setbit(sc->sc_ic.ic_chan_avail, 1325 IEEE80211_FH_CHAN(1, i)); 1326 } 1327 } else { 1328 for (i = cs->cs_min; i <= cs->cs_max; i++) 1329 setbit(sc->sc_ic.ic_chan_avail, i); 1330 } 1331 sc->sc_cur_chan = cs->cs_def; 1332 1333 sc->sc_mib_local.Fragmentation_Dis = 1; 1334 sc->sc_mib_local.Add_PLCP_Dis = 0; 1335 sc->sc_mib_local.MAC_Hdr_Prsv = 1; 1336 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1337 sc->sc_mib_local.Re_Assembly_Dis = 1; 1338 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1339 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1340 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1341 sc->sc_mib_local.Check_Seq_Cntl_Dis = 1; 1342 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1343 sc->sc_mib_local.Network_Mode = 1; 1344 sc->sc_mib_local.PWD_Lvl = 0; 1345 sc->sc_mib_local.CFP_Mode = 0; 1346 1347 /* allocate buffers */ 1348 sc->sc_txbase = AWI_BUFFERS; 1349 sc->sc_txend = sc->sc_txbase + 1350 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1351 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1352 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1353 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1354 sc->sc_txend - sc->sc_txbase); 1355 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1356 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1357 AWI_BUFFERS_END - sc->sc_txend); 1358 sc->sc_mib_local.Acting_as_AP = 0; 1359 sc->sc_mib_local.Fill_CFP = 0; 1360 1361 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1362 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1363 1364 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1365 sc->sc_mib_mgt.aDTIM_Period = 1; 1366 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1367 return 0; 1368 } 1369 1370 static int 1371 awi_chan_check(void *arg, u_char *chanreq) 1372 { 1373 struct awi_softc *sc = arg; 1374 int i; 1375 struct awi_chanset *cs; 1376 u_char chanlist[(IEEE80211_CHAN_MAX+1)/NBBY]; 1377 1378 for (cs = awi_chanset; cs->cs_type != 0; cs++) { 1379 if (cs->cs_type != sc->sc_mib_phy.IEEE_PHY_Type) 1380 continue; 1381 memset(chanlist, 0, sizeof(chanlist)); 1382 for (i = 0; ; i++) { 1383 if (i == IEEE80211_CHAN_MAX) { 1384 sc->sc_mib_phy.aCurrent_Reg_Domain = 1385 cs->cs_region; 1386 memcpy(sc->sc_ic.ic_chan_avail, chanlist, 1387 sizeof(sc->sc_ic.ic_chan_avail)); 1388 sc->sc_ic.ic_bss.ni_chan = cs->cs_def; 1389 sc->sc_cur_chan = cs->cs_def; 1390 return 0; 1391 } 1392 if (i >= cs->cs_min && i <= cs->cs_max) 1393 setbit(chanlist, i); 1394 else if (isset(chanreq, i)) 1395 break; 1396 } 1397 } 1398 return EINVAL; 1399 } 1400 1401 static int 1402 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1403 { 1404 int error; 1405 u_int8_t size, *ptr; 1406 1407 switch (mib) { 1408 case AWI_MIB_LOCAL: 1409 ptr = (u_int8_t *)&sc->sc_mib_local; 1410 size = sizeof(sc->sc_mib_local); 1411 break; 1412 case AWI_MIB_ADDR: 1413 ptr = (u_int8_t *)&sc->sc_mib_addr; 1414 size = sizeof(sc->sc_mib_addr); 1415 break; 1416 case AWI_MIB_MAC: 1417 ptr = (u_int8_t *)&sc->sc_mib_mac; 1418 size = sizeof(sc->sc_mib_mac); 1419 break; 1420 case AWI_MIB_STAT: 1421 ptr = (u_int8_t *)&sc->sc_mib_stat; 1422 size = sizeof(sc->sc_mib_stat); 1423 break; 1424 case AWI_MIB_MGT: 1425 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1426 size = sizeof(sc->sc_mib_mgt); 1427 break; 1428 case AWI_MIB_PHY: 1429 ptr = (u_int8_t *)&sc->sc_mib_phy; 1430 size = sizeof(sc->sc_mib_phy); 1431 break; 1432 default: 1433 return EINVAL; 1434 } 1435 if (sc->sc_cmd_inprog) { 1436 if ((error = awi_cmd_wait(sc)) != 0) { 1437 if (error == EWOULDBLOCK) 1438 DPRINTF(("awi_mib: cmd %d inprog", 1439 sc->sc_cmd_inprog)); 1440 return error; 1441 } 1442 } 1443 sc->sc_cmd_inprog = cmd; 1444 if (cmd == AWI_CMD_SET_MIB) 1445 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1446 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1447 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1448 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1449 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1450 return error; 1451 if (cmd == AWI_CMD_GET_MIB) { 1452 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1453 #ifdef AWI_DEBUG 1454 if (awi_debug) { 1455 int i; 1456 1457 printf("awi_mib: #%d:", mib); 1458 for (i = 0; i < size; i++) 1459 printf(" %02x", ptr[i]); 1460 printf("\n"); 1461 } 1462 #endif 1463 } 1464 return 0; 1465 } 1466 1467 static int 1468 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1469 { 1470 u_int8_t status; 1471 int error = 0; 1472 #ifdef AWI_DEBUG 1473 static const char *cmdname[] = { 1474 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1475 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1476 }; 1477 #endif 1478 1479 #ifdef AWI_DEBUG 1480 if (awi_debug > 1) { 1481 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1482 printf("awi_cmd: #%d", cmd); 1483 else 1484 printf("awi_cmd: %s", cmdname[cmd]); 1485 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1486 } 1487 #endif 1488 sc->sc_cmd_inprog = cmd; 1489 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1490 awi_write_1(sc, AWI_CMD, cmd); 1491 if (wflag == AWI_NOWAIT) 1492 return EINPROGRESS; 1493 if ((error = awi_cmd_wait(sc)) != 0) 1494 return error; 1495 status = awi_read_1(sc, AWI_CMD_STATUS); 1496 awi_write_1(sc, AWI_CMD, 0); 1497 switch (status) { 1498 case AWI_STAT_OK: 1499 break; 1500 case AWI_STAT_BADPARM: 1501 return EINVAL; 1502 default: 1503 printf("%s: command %d failed %x\n", 1504 sc->sc_dev.dv_xname, cmd, status); 1505 return ENXIO; 1506 } 1507 return 0; 1508 } 1509 1510 static int 1511 awi_cmd_wait(struct awi_softc *sc) 1512 { 1513 int i, error = 0; 1514 1515 i = 0; 1516 while (sc->sc_cmd_inprog) { 1517 if (sc->sc_invalid) 1518 return ENXIO; 1519 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1520 printf("%s: failed to access hardware\n", 1521 sc->sc_dev.dv_xname); 1522 sc->sc_invalid = 1; 1523 return ENXIO; 1524 } 1525 if (sc->sc_cansleep) { 1526 sc->sc_sleep_cnt++; 1527 error = tsleep(sc, PWAIT, "awicmd", 1528 AWI_CMD_TIMEOUT*hz/1000); 1529 sc->sc_sleep_cnt--; 1530 } else { 1531 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1532 awi_cmd_done(sc); 1533 break; 1534 } 1535 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1536 error = EWOULDBLOCK; 1537 else 1538 DELAY(10); 1539 } 1540 if (error) 1541 break; 1542 } 1543 if (error) { 1544 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1545 sc->sc_cmd_inprog, error)); 1546 } 1547 return error; 1548 } 1549 1550 static void 1551 awi_cmd_done(struct awi_softc *sc) 1552 { 1553 u_int8_t cmd, status; 1554 1555 status = awi_read_1(sc, AWI_CMD_STATUS); 1556 if (status == AWI_STAT_IDLE) 1557 return; /* stray interrupt */ 1558 1559 cmd = sc->sc_cmd_inprog; 1560 sc->sc_cmd_inprog = 0; 1561 wakeup(sc); 1562 awi_write_1(sc, AWI_CMD, 0); 1563 1564 if (status != AWI_STAT_OK) { 1565 printf("%s: command %d failed %x\n", 1566 sc->sc_dev.dv_xname, cmd, status); 1567 sc->sc_substate = AWI_ST_NONE; 1568 return; 1569 } 1570 if (sc->sc_substate != AWI_ST_NONE) 1571 (void)ieee80211_new_state(&sc->sc_ic.ic_if, sc->sc_nstate, -1); 1572 } 1573 1574 static int 1575 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1576 { 1577 u_int32_t txd, ntxd, frame; 1578 1579 txd = sc->sc_txnext; 1580 frame = txd + AWI_TXD_SIZE; 1581 if (frame + len > sc->sc_txend) 1582 frame = sc->sc_txbase; 1583 ntxd = frame + len; 1584 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1585 ntxd = sc->sc_txbase; 1586 *framep = frame; 1587 *ntxdp = ntxd; 1588 /* 1589 * Determine if there are any room in ring buffer. 1590 * --- send wait, === new data, +++ conflict (ENOBUFS) 1591 * base........................end 1592 * done----txd=====ntxd OK 1593 * --txd=====done++++ntxd-- full 1594 * --txd=====ntxd done-- OK 1595 * ==ntxd done----txd=== OK 1596 * ==done++++ntxd----txd=== full 1597 * ++ntxd txd=====done++ full 1598 */ 1599 if (txd < ntxd) { 1600 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1601 return ENOBUFS; 1602 } else { 1603 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1604 return ENOBUFS; 1605 } 1606 return 0; 1607 } 1608 1609 static int 1610 awi_lock(struct awi_softc *sc) 1611 { 1612 int error = 0; 1613 1614 if (curlwp == NULL) { 1615 /* 1616 * XXX 1617 * Though driver ioctl should be called with context, 1618 * KAME ipv6 stack calls ioctl in interrupt for now. 1619 * We simply abort the request if there are other 1620 * ioctl requests in progress. 1621 */ 1622 if (sc->sc_busy) { 1623 return EWOULDBLOCK; 1624 if (sc->sc_invalid) 1625 return ENXIO; 1626 } 1627 sc->sc_busy = 1; 1628 sc->sc_cansleep = 0; 1629 return 0; 1630 } 1631 while (sc->sc_busy) { 1632 if (sc->sc_invalid) 1633 return ENXIO; 1634 sc->sc_sleep_cnt++; 1635 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1636 sc->sc_sleep_cnt--; 1637 if (error) 1638 return error; 1639 } 1640 sc->sc_busy = 1; 1641 sc->sc_cansleep = 1; 1642 return 0; 1643 } 1644 1645 static void 1646 awi_unlock(struct awi_softc *sc) 1647 { 1648 sc->sc_busy = 0; 1649 sc->sc_cansleep = 0; 1650 if (sc->sc_sleep_cnt) 1651 wakeup(sc); 1652 } 1653 1654 static int 1655 awi_intr_lock(struct awi_softc *sc) 1656 { 1657 u_int8_t status; 1658 int i, retry; 1659 1660 status = 1; 1661 for (retry = 0; retry < 10; retry++) { 1662 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1663 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1664 break; 1665 DELAY(5); 1666 } 1667 if (status != 0) 1668 break; 1669 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1670 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1671 break; 1672 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1673 } 1674 if (status != 0) { 1675 printf("%s: failed to lock interrupt\n", 1676 sc->sc_dev.dv_xname); 1677 return ENXIO; 1678 } 1679 return 0; 1680 } 1681 1682 static void 1683 awi_intr_unlock(struct awi_softc *sc) 1684 { 1685 1686 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1687 } 1688 1689 static int 1690 awi_newstate(void *arg, enum ieee80211_state nstate) 1691 { 1692 struct awi_softc *sc = arg; 1693 struct ieee80211com *ic = &sc->sc_ic; 1694 struct ieee80211_node *ni; 1695 struct ifnet *ifp = &ic->ic_if; 1696 int error; 1697 u_int8_t newmode; 1698 enum ieee80211_state ostate; 1699 #ifdef AWI_DEBUG 1700 static const char *stname[] = 1701 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1702 static const char *substname[] = 1703 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1704 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1705 #endif /* AWI_DEBUG */ 1706 1707 ostate = ic->ic_state; 1708 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1709 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1710 1711 /* set LED */ 1712 switch (nstate) { 1713 case IEEE80211_S_INIT: 1714 awi_drvstate(sc, AWI_DRV_RESET); 1715 break; 1716 case IEEE80211_S_SCAN: 1717 if (ic->ic_opmode == IEEE80211_M_IBSS || 1718 ic->ic_opmode == IEEE80211_M_AHDEMO) 1719 awi_drvstate(sc, AWI_DRV_ADHSC); 1720 else 1721 awi_drvstate(sc, AWI_DRV_INFSY); 1722 break; 1723 case IEEE80211_S_AUTH: 1724 awi_drvstate(sc, AWI_DRV_INFSY); 1725 break; 1726 case IEEE80211_S_ASSOC: 1727 awi_drvstate(sc, AWI_DRV_INFAUTH); 1728 break; 1729 case IEEE80211_S_RUN: 1730 if (ic->ic_opmode == IEEE80211_M_IBSS || 1731 ic->ic_opmode == IEEE80211_M_AHDEMO) 1732 awi_drvstate(sc, AWI_DRV_ADHSY); 1733 else 1734 awi_drvstate(sc, AWI_DRV_INFASSOC); 1735 break; 1736 } 1737 1738 if (nstate == IEEE80211_S_INIT) { 1739 sc->sc_substate = AWI_ST_NONE; 1740 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1741 return 0; 1742 } 1743 1744 /* state transition */ 1745 if (nstate == IEEE80211_S_SCAN) { 1746 /* SCAN substate */ 1747 if (sc->sc_substate == AWI_ST_NONE) { 1748 sc->sc_nstate = nstate; /* next state in transition */ 1749 sc->sc_substate = AWI_ST_SCAN_INIT; 1750 } 1751 switch (sc->sc_substate) { 1752 case AWI_ST_SCAN_INIT: 1753 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1754 switch (ostate) { 1755 case IEEE80211_S_RUN: 1756 /* beacon miss */ 1757 if (ifp->if_flags & IFF_DEBUG) 1758 printf("%s: no recent beacons from %s;" 1759 " rescanning\n", 1760 ifp->if_xname, 1761 ether_sprintf(ic->ic_bss.ni_bssid)); 1762 /* FALLTHRU */ 1763 case IEEE80211_S_AUTH: 1764 case IEEE80211_S_ASSOC: 1765 /* timeout restart scan */ 1766 ieee80211_free_allnodes(ic); 1767 /* FALLTHRU */ 1768 case IEEE80211_S_INIT: 1769 ic->ic_flags |= IEEE80211_F_ASCAN; 1770 ic->ic_scan_timer = 0; 1771 /* FALLTHRU */ 1772 case IEEE80211_S_SCAN: 1773 /* scan next */ 1774 break; 1775 } 1776 if (ic->ic_flags & IEEE80211_F_ASCAN) 1777 newmode = AWI_SCAN_ACTIVE; 1778 else 1779 newmode = AWI_SCAN_PASSIVE; 1780 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1781 sc->sc_mib_mgt.aScan_Mode = newmode; 1782 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1783 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1784 break; 1785 } 1786 /* FALLTHRU */ 1787 case AWI_ST_SCAN_SETMIB: 1788 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1789 if (sc->sc_cmd_inprog) { 1790 if ((error = awi_cmd_wait(sc)) != 0) 1791 break; 1792 } 1793 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1794 ni = &ic->ic_bss; 1795 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1796 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1797 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1798 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1799 awi_write_1(sc, AWI_CA_SCAN_SET, 1800 IEEE80211_FH_CHANSET(ni->ni_chan)); 1801 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1802 IEEE80211_FH_CHANPAT(ni->ni_chan)); 1803 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1804 } else { 1805 awi_write_1(sc, AWI_CA_SCAN_SET, ni->ni_chan); 1806 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1807 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1808 } 1809 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1810 sc->sc_cur_chan = ni->ni_chan; 1811 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1812 != 0) 1813 break; 1814 /* FALLTHRU */ 1815 case AWI_ST_SCAN_SCCMD: 1816 if (ic->ic_scan_timer == 0) 1817 ic->ic_scan_timer = 1818 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1819 IEEE80211_ASCAN_WAIT : IEEE80211_PSCAN_WAIT; 1820 ifp->if_timer = 1; 1821 ic->ic_state = nstate; 1822 sc->sc_substate = AWI_ST_NONE; 1823 error = EINPROGRESS; 1824 break; 1825 default: 1826 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1827 stname[nstate], substname[sc->sc_substate])); 1828 sc->sc_substate = AWI_ST_NONE; 1829 error = EIO; 1830 break; 1831 } 1832 return error; 1833 } 1834 1835 if (ostate == IEEE80211_S_SCAN) { 1836 /* set SSID and channel */ 1837 /* substate */ 1838 if (sc->sc_substate == AWI_ST_NONE) { 1839 sc->sc_nstate = nstate; /* next state in transition */ 1840 sc->sc_substate = AWI_ST_SUB_INIT; 1841 } 1842 ni = &ic->ic_bss; 1843 switch (sc->sc_substate) { 1844 case AWI_ST_SUB_INIT: 1845 sc->sc_substate = AWI_ST_SUB_SETSS; 1846 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1847 ni->ni_bssid); 1848 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1849 AWI_ESS_ID_SIZE); 1850 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1851 IEEE80211_ELEMID_SSID; 1852 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1853 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1854 ni->ni_essid, ni->ni_esslen); 1855 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1856 ni->ni_intval); 1857 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1858 AWI_NOWAIT)) != 0) 1859 break; 1860 /* FALLTHRU */ 1861 case AWI_ST_SUB_SETSS: 1862 sc->sc_substate = AWI_ST_SUB_SYNC; 1863 if (sc->sc_cmd_inprog) { 1864 if ((error = awi_cmd_wait(sc)) != 0) 1865 break; 1866 } 1867 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1868 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1869 awi_write_1(sc, AWI_CA_SYNC_SET, 1870 IEEE80211_FH_CHANSET(ni->ni_chan)); 1871 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1872 IEEE80211_FH_CHANPAT(ni->ni_chan)); 1873 awi_write_1(sc, AWI_CA_SYNC_IDX, 1874 ni->ni_fhindex); 1875 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1876 ni->ni_fhdwell); 1877 } else { 1878 awi_write_1(sc, AWI_CA_SYNC_SET, ni->ni_chan); 1879 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1880 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1881 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1882 } 1883 if (ic->ic_flags & IEEE80211_F_SIBSS) 1884 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1885 else 1886 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1887 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1888 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1889 ni->ni_tstamp, 8); 1890 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1891 sc->sc_cur_chan = ni->ni_chan; 1892 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1893 != 0) 1894 break; 1895 /* FALLTHRU */ 1896 case AWI_ST_SUB_SYNC: 1897 sc->sc_substate = AWI_ST_NONE; 1898 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1899 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1900 AWI_MIB_MGT, AWI_WAIT)) != 0) 1901 break; 1902 IEEE80211_ADDR_COPY(ni->ni_bssid, 1903 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1904 } else { 1905 if (nstate == IEEE80211_S_RUN) { 1906 sc->sc_rx_timer = 10; 1907 ifp->if_timer = 1; 1908 } 1909 } 1910 error = 0; 1911 break; 1912 default: 1913 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1914 stname[nstate], substname[sc->sc_substate])); 1915 sc->sc_substate = AWI_ST_NONE; 1916 error = EIO; 1917 break; 1918 } 1919 return error; 1920 } 1921 1922 sc->sc_substate = AWI_ST_NONE; 1923 1924 return 0; 1925 } 1926 1927 static struct mbuf * 1928 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 1929 { 1930 struct ieee80211com *ic = &sc->sc_ic; 1931 struct ieee80211_node *ni = &ic->ic_bss; 1932 struct ether_header *eh; 1933 struct ieee80211_frame *wh; 1934 1935 if (m->m_len < sizeof(struct ether_header)) { 1936 m = m_pullup(m, sizeof(struct ether_header)); 1937 if (m == NULL) 1938 return NULL; 1939 } 1940 eh = mtod(m, struct ether_header *); 1941 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 1942 if (m == NULL) 1943 return NULL; 1944 wh = mtod(m, struct ieee80211_frame *); 1945 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 1946 *(u_int16_t *)wh->i_dur = 0; 1947 *(u_int16_t *)wh->i_seq = 1948 htole16(ni->ni_txseq << IEEE80211_SEQ_SEQ_SHIFT); 1949 ni->ni_txseq++; 1950 if (ic->ic_opmode == IEEE80211_M_IBSS || 1951 ic->ic_opmode == IEEE80211_M_AHDEMO) { 1952 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 1953 if (sc->sc_adhoc_ap) 1954 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 1955 else 1956 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 1957 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 1958 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 1959 } else { 1960 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 1961 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 1962 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 1963 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 1964 } 1965 return m; 1966 } 1967 1968 static struct mbuf * 1969 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 1970 { 1971 struct ieee80211com *ic = &sc->sc_ic; 1972 struct ether_header eh; 1973 struct ieee80211_frame wh; 1974 struct llc *llc; 1975 1976 if (m->m_len < sizeof(wh) + sizeof(eh)) { 1977 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 1978 if (m == NULL) 1979 return NULL; 1980 } 1981 memcpy(&wh, mtod(m, caddr_t), sizeof(wh)); 1982 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 1983 return m; 1984 memcpy(&eh, mtod(m, caddr_t) + sizeof(wh), sizeof(eh)); 1985 m_adj(m, sizeof(eh) - sizeof(*llc)); 1986 if (ic->ic_opmode == IEEE80211_M_IBSS || 1987 ic->ic_opmode == IEEE80211_M_AHDEMO) 1988 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 1989 memcpy(mtod(m, caddr_t), &wh, sizeof(wh)); 1990 llc = (struct llc *)(mtod(m, caddr_t) + sizeof(wh)); 1991 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 1992 llc->llc_control = LLC_UI; 1993 llc->llc_snap.org_code[0] = 0; 1994 llc->llc_snap.org_code[1] = 0; 1995 llc->llc_snap.org_code[2] = 0; 1996 llc->llc_snap.ether_type = eh.ether_type; 1997 return m; 1998 } 1999
Indexes created Sun Oct 19 02:09:48 GMT 2025