awi.c revision 1.47
1 /* $NetBSD: awi.c,v 1.47 2002/09/27 05:36:06 onoe Exp $ */ 2 3 /*- 4 * Copyright (c) 1999,2000,2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bill Sommerfeld 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 /* 39 * Driver for AMD 802.11 firmware. 40 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 41 * 42 * More-or-less a generic ethernet-like if driver, with 802.11 gorp added. 43 */ 44 45 /* 46 * todo: 47 * - flush tx queue on resynch. 48 * - clear oactive on "down". 49 * - rewrite copy-into-mbuf code 50 * - mgmt state machine gets stuck retransmitting assoc requests. 51 * - multicast filter. 52 * - fix device reset so it's more likely to work 53 * - show status goo through ifmedia. 54 * 55 * more todo: 56 * - deal with more 802.11 frames. 57 * - send reassoc request 58 * - deal with reassoc response 59 * - send/deal with disassociation 60 * - deal with "full" access points (no room for me). 61 * - power save mode 62 * 63 * later: 64 * - SSID preferences 65 * - need ioctls for poking at the MIBs 66 * - implement ad-hoc mode (including bss creation). 67 * - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?) 68 * (focus on inf. mode since that will be needed for ietf) 69 * - deal with DH vs. FH versions of the card 70 * - deal with faster cards (2mb/s) 71 * - ?WEP goo (mmm, rc4) (it looks not particularly useful). 72 * - ifmedia revision. 73 * - common 802.11 mibish things. 74 * - common 802.11 media layer. 75 */ 76 77 /* 78 * Driver for AMD 802.11 PCnetMobile firmware. 79 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 80 * 81 * The initial version of the driver was written by 82 * Bill Sommerfeld <sommerfeld (at) netbsd.org>. 83 * Then the driver module completely rewritten to support cards with DS phy 84 * and to support adhoc mode by Atsushi Onoe <onoe (at) netbsd.org> 85 */ 86 87 #include <sys/cdefs.h> 88 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.47 2002/09/27 05:36:06 onoe 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 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) 238 ic->ic_phytype = IEEE80211_T_FH; 239 else 240 ic->ic_phytype = IEEE80211_T_DS; 241 ic->ic_flags = 242 IEEE80211_F_HASWEP | IEEE80211_F_HASIBSS | IEEE80211_F_HASHAP; 243 ic->ic_opmode = IEEE80211_M_STA; 244 ic->ic_state = IEEE80211_S_INIT; 245 ic->ic_newstate = awi_newstate; 246 ic->ic_chancheck = awi_chan_check; 247 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 248 memcpy(ic->ic_sup_rates, sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 249 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 250 251 printf("%s: IEEE802.11 %s %dMbps (firmware %s)\n", 252 sc->sc_dev.dv_xname, 253 sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH ? "FH" : "DS", 254 (ic->ic_sup_rates[nrate - 1] & IEEE80211_RATE_VAL) / 2, 255 sc->sc_banner); 256 printf("%s: 802.11 address: %s\n", sc->sc_dev.dv_xname, 257 ether_sprintf(ic->ic_myaddr)); 258 259 if_attach(ifp); 260 ieee80211_ifattach(ifp); 261 262 /* probe request is handled by hardware */ 263 ic->ic_send_mgmt[IEEE80211_FC0_SUBTYPE_PROBE_REQ 264 >> IEEE80211_FC0_SUBTYPE_SHIFT] = NULL; 265 ic->ic_recv_mgmt[IEEE80211_FC0_SUBTYPE_PROBE_REQ 266 >> IEEE80211_FC0_SUBTYPE_SHIFT] = NULL; 267 268 ifmedia_init(&sc->sc_media, 0, awi_media_change, awi_media_status); 269 #define ADD(s, o) ifmedia_add(&sc->sc_media, \ 270 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 271 ADD(IFM_AUTO, 0); /* infra mode */ 272 ADD(IFM_AUTO, IFM_FLAG0); /* melco compat mode */ 273 ADD(IFM_AUTO, IFM_IEEE80211_ADHOC); /* IBSS mode */ 274 if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_FH) 275 ADD(IFM_AUTO, IFM_IEEE80211_ADHOC | IFM_FLAG0); 276 /* lucent compat mode */ 277 ADD(IFM_AUTO, IFM_IEEE80211_HOSTAP); 278 for (i = 0; i < nrate; i++) { 279 mword = ieee80211_rate2media(ic->ic_sup_rates[i], 280 ic->ic_phytype); 281 if (mword == 0) 282 continue; 283 ADD(mword, 0); 284 ADD(mword, IFM_FLAG0); 285 ADD(mword, IFM_IEEE80211_ADHOC); 286 if (sc->sc_mib_phy.IEEE_PHY_Type != AWI_PHY_TYPE_FH) 287 ADD(mword, IFM_IEEE80211_ADHOC | IFM_FLAG0); 288 ADD(mword, IFM_IEEE80211_HOSTAP); 289 } 290 #undef ADD 291 awi_media_status(ifp, &imr); 292 ifmedia_set(&sc->sc_media, imr.ifm_active); 293 294 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 295 printf("%s: WARNING: unable to establish shutdown hook\n", 296 sc->sc_dev.dv_xname); 297 if ((sc->sc_powerhook = powerhook_establish(awi_power, sc)) == NULL) 298 printf("%s: WARNING: unable to establish power hook\n", 299 sc->sc_dev.dv_xname); 300 sc->sc_attached = 1; 301 splx(s); 302 303 /* ready to accept ioctl */ 304 awi_unlock(sc); 305 306 return 0; 307 } 308 309 int 310 awi_detach(struct awi_softc *sc) 311 { 312 struct ifnet *ifp = &sc->sc_ic.ic_if; 313 int s; 314 315 if (!sc->sc_attached) 316 return 0; 317 318 s = splnet(); 319 sc->sc_invalid = 1; 320 awi_stop(ifp, 1); 321 while (sc->sc_sleep_cnt > 0) { 322 wakeup(sc); 323 (void)tsleep(sc, PWAIT, "awidet", 1); 324 } 325 ifmedia_delete_instance(&sc->sc_media, IFM_INST_ANY); 326 ieee80211_ifdetach(ifp); 327 if_detach(ifp); 328 shutdownhook_disestablish(sc->sc_sdhook); 329 powerhook_disestablish(sc->sc_powerhook); 330 splx(s); 331 return 0; 332 } 333 334 int 335 awi_activate(struct device *self, enum devact act) 336 { 337 struct awi_softc *sc = (struct awi_softc *)self; 338 struct ifnet *ifp = &sc->sc_ic.ic_if; 339 int s, error = 0; 340 341 s = splnet(); 342 switch (act) { 343 case DVACT_ACTIVATE: 344 error = EOPNOTSUPP; 345 break; 346 case DVACT_DEACTIVATE: 347 sc->sc_invalid = 1; 348 if_deactivate(ifp); 349 break; 350 } 351 splx(s); 352 return error; 353 } 354 355 void 356 awi_power(int why, void *arg) 357 { 358 struct awi_softc *sc = arg; 359 struct ifnet *ifp = &sc->sc_ic.ic_if; 360 int s; 361 int ocansleep; 362 363 DPRINTF(("awi_power: %d\n", why)); 364 s = splnet(); 365 ocansleep = sc->sc_cansleep; 366 sc->sc_cansleep = 0; 367 switch (why) { 368 case PWR_SUSPEND: 369 case PWR_STANDBY: 370 awi_stop(ifp, 1); 371 break; 372 case PWR_RESUME: 373 if (ifp->if_flags & IFF_UP) { 374 awi_init(ifp); 375 (void)awi_intr(sc); /* make sure */ 376 } 377 break; 378 case PWR_SOFTSUSPEND: 379 case PWR_SOFTSTANDBY: 380 case PWR_SOFTRESUME: 381 break; 382 } 383 sc->sc_cansleep = ocansleep; 384 splx(s); 385 } 386 387 void 388 awi_shutdown(void *arg) 389 { 390 struct awi_softc *sc = arg; 391 struct ifnet *ifp = &sc->sc_ic.ic_if; 392 393 if (sc->sc_attached) 394 awi_stop(ifp, 1); 395 } 396 397 int 398 awi_intr(void *arg) 399 { 400 struct awi_softc *sc = arg; 401 u_int16_t status; 402 int error, handled = 0, ocansleep; 403 #ifdef AWI_DEBUG 404 static const char *intname[] = { 405 "CMD", "RX", "TX", "SCAN_CMPLT", 406 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 407 "TXDATA", "TXBCAST", "TXPS", "TXCF", 408 "TXMGT", "#13", "RXDATA", "RXMGT" 409 }; 410 #endif 411 412 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) 413 return 0; 414 415 am79c930_gcr_setbits(&sc->sc_chip, 416 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 417 awi_write_1(sc, AWI_DIS_PWRDN, 1); 418 ocansleep = sc->sc_cansleep; 419 sc->sc_cansleep = 0; 420 421 for (;;) { 422 if ((error = awi_intr_lock(sc)) != 0) 423 break; 424 status = awi_read_1(sc, AWI_INTSTAT); 425 awi_write_1(sc, AWI_INTSTAT, 0); 426 awi_write_1(sc, AWI_INTSTAT, 0); 427 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 428 awi_write_1(sc, AWI_INTSTAT2, 0); 429 DELAY(10); 430 awi_intr_unlock(sc); 431 if (!sc->sc_cmd_inprog) 432 status &= ~AWI_INT_CMD; /* make sure */ 433 if (status == 0) 434 break; 435 #ifdef AWI_DEBUG 436 if (awi_debug > 1) { 437 int i; 438 439 printf("awi_intr: status 0x%04x", status); 440 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 441 i++) { 442 if (status & (1 << i)) 443 printf(" %s", intname[i]); 444 } 445 printf("\n"); 446 } 447 #endif 448 handled = 1; 449 if (status & AWI_INT_RX) 450 awi_rx_int(sc); 451 if (status & AWI_INT_TX) 452 awi_tx_int(sc); 453 if (status & AWI_INT_CMD) 454 awi_cmd_done(sc); 455 if (status & AWI_INT_SCAN_CMPLT) { 456 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 457 sc->sc_substate == AWI_ST_NONE) 458 ieee80211_next_scan(&sc->sc_ic.ic_if); 459 } 460 } 461 sc->sc_cansleep = ocansleep; 462 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 463 awi_write_1(sc, AWI_DIS_PWRDN, 0); 464 return handled; 465 } 466 467 static int 468 awi_init(struct ifnet *ifp) 469 { 470 struct awi_softc *sc = ifp->if_softc; 471 struct ieee80211com *ic = &sc->sc_ic; 472 struct ieee80211_node *ni = &ic->ic_bss; 473 int i, error; 474 475 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 476 if (sc->sc_enabled) { 477 awi_stop(ifp, 0); 478 } else { 479 if (sc->sc_enable) 480 (*sc->sc_enable)(sc); 481 sc->sc_enabled = 1; 482 if ((error = awi_hw_init(sc)) != 0) { 483 awi_stop(ifp, 1); 484 return error; 485 } 486 } 487 ic->ic_state = IEEE80211_S_INIT; 488 489 sc->sc_mib_local.Network_Mode = 490 (ic->ic_opmode == IEEE80211_M_ADHOC) ? 0 : 1; 491 sc->sc_mib_local.Acting_as_AP = 492 (ic->ic_opmode == IEEE80211_M_HOSTAP) ? 1 : 0; 493 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 494 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 495 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 496 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 497 ic->ic_des_esslen); 498 499 if ((error = awi_mode_init(sc)) != 0) { 500 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 501 awi_stop(ifp, 1); 502 return error; 503 } 504 505 /* start transmitter */ 506 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 507 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 508 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 509 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 510 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 511 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 512 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 513 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 514 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 515 awi_write_4(sc, AWI_CA_TX_MGT, 0); 516 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 517 awi_write_4(sc, AWI_CA_TX_PS, 0); 518 awi_write_4(sc, AWI_CA_TX_CF, 0); 519 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 520 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 521 awi_stop(ifp, 1); 522 return error; 523 } 524 525 /* start receiver */ 526 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 527 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 528 awi_stop(ifp, 1); 529 return error; 530 } 531 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 532 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 533 534 ifp->if_flags |= IFF_RUNNING; 535 ifp->if_flags &= ~IFF_OACTIVE; 536 537 if ((ic->ic_opmode == IEEE80211_M_ADHOC && sc->sc_no_bssid) || 538 ic->ic_opmode == IEEE80211_M_HOSTAP) { 539 ni->ni_chan = ic->ic_ibss_chan; 540 ni->ni_intval = ic->ic_lintval; 541 ni->ni_rssi = 0; 542 ni->ni_rstamp = 0; 543 memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 544 ni->ni_nrate = 0; 545 for (i = 0; i < IEEE80211_RATE_SIZE; i++) { 546 if (ic->ic_sup_rates[i]) 547 ni->ni_rates[ni->ni_nrate++] = 548 ic->ic_sup_rates[i]; 549 } 550 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 551 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 552 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 553 ni->ni_esslen = ic->ic_des_esslen; 554 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 555 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 556 if (ic->ic_phytype == IEEE80211_T_FH) { 557 ni->ni_fhdwell = 200; /* XXX */ 558 ni->ni_fhindex = 1; 559 } 560 } else { 561 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 562 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 563 ni->ni_esslen = 0; 564 } 565 if (ic->ic_flags & IEEE80211_F_WEPON) 566 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 567 ic->ic_flags |= IEEE80211_F_SIBSS; 568 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 569 sc->sc_substate = AWI_ST_NONE; 570 ieee80211_new_state(&ic->ic_if, IEEE80211_S_RUN, -1); 571 } else { 572 ni->ni_chan = sc->sc_cur_chan; 573 ieee80211_new_state(&ic->ic_if, IEEE80211_S_SCAN, -1); 574 } 575 return 0; 576 } 577 578 static void 579 awi_stop(struct ifnet *ifp, int disable) 580 { 581 struct awi_softc *sc = ifp->if_softc; 582 583 if (!sc->sc_enabled) 584 return; 585 586 DPRINTF(("awi_stop(%d)\n", disable)); 587 588 ieee80211_new_state(&sc->sc_ic.ic_if, IEEE80211_S_INIT, -1); 589 590 if (!sc->sc_invalid) { 591 if (sc->sc_cmd_inprog) 592 (void)awi_cmd_wait(sc); 593 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 594 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 595 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 596 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 597 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 598 awi_write_1(sc, AWI_CA_FTX_PS, 0); 599 awi_write_1(sc, AWI_CA_FTX_CF, 0); 600 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 601 } 602 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 603 ifp->if_timer = 0; 604 sc->sc_tx_timer = sc->sc_rx_timer = 0; 605 if (sc->sc_rxpend != NULL) { 606 m_freem(sc->sc_rxpend); 607 sc->sc_rxpend = NULL; 608 } 609 IFQ_PURGE(&ifp->if_snd); 610 611 if (disable) { 612 if (sc->sc_disable) 613 (*sc->sc_disable)(sc); 614 sc->sc_enabled = 0; 615 } 616 } 617 618 static void 619 awi_start(struct ifnet *ifp) 620 { 621 struct awi_softc *sc = ifp->if_softc; 622 struct ieee80211com *ic = &sc->sc_ic; 623 struct ieee80211_frame *wh; 624 struct mbuf *m, *m0; 625 int len, dowep; 626 u_int32_t txd, frame, ntxd; 627 u_int8_t rate; 628 629 if (!sc->sc_enabled || sc->sc_invalid) 630 return; 631 632 for (;;) { 633 txd = sc->sc_txnext; 634 IF_POLL(&ic->ic_mgtq, m0); 635 dowep = 0; 636 if (m0 != NULL) { 637 len = m0->m_pkthdr.len; 638 if (awi_next_txd(sc, len, &frame, &ntxd)) { 639 ifp->if_flags |= IFF_OACTIVE; 640 break; 641 } 642 IF_DEQUEUE(&ic->ic_mgtq, m0); 643 } else { 644 if (ic->ic_state != IEEE80211_S_RUN) 645 break; 646 IFQ_POLL(&ifp->if_snd, m0); 647 if (m0 == NULL) 648 break; 649 /* 650 * Need to calculate the real length to determine 651 * if the transmit buffer has a room for the packet. 652 */ 653 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 654 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 655 len += sizeof(struct llc) - 656 sizeof(struct ether_header); 657 if (ic->ic_flags & IEEE80211_F_WEPON) { 658 dowep = 1; 659 len += IEEE80211_WEP_IVLEN + 660 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 661 } 662 if (awi_next_txd(sc, len, &frame, &ntxd)) { 663 ifp->if_flags |= IFF_OACTIVE; 664 break; 665 } 666 IFQ_DEQUEUE(&ifp->if_snd, m0); 667 ifp->if_opackets++; 668 #if NBPFILTER > 0 669 if (ifp->if_bpf) 670 bpf_mtap(ifp->if_bpf, m0); 671 #endif 672 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 673 m0 = awi_ether_encap(sc, m0); 674 else 675 m0 = ieee80211_encap(ifp, m0); 676 if (m0 == NULL) { 677 ifp->if_oerrors++; 678 continue; 679 } 680 wh = mtod(m0, struct ieee80211_frame *); 681 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 682 ic->ic_opmode != IEEE80211_M_STA && 683 sc->sc_no_bssid == 0 && 684 sc->sc_adhoc_ap == 0 && 685 (ifp->if_flags & IFF_LINK0) == 0 && 686 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 687 IEEE80211_FC0_TYPE_DATA && 688 ieee80211_find_node(ic, wh->i_addr1) == NULL) { 689 m_freem(m0); 690 ifp->if_oerrors++; 691 continue; 692 } 693 } 694 #if NBPFILTER > 0 695 if (ic->ic_rawbpf) 696 bpf_mtap(ic->ic_rawbpf, m0); 697 #endif 698 if (dowep) { 699 if ((m0 = ieee80211_wep_crypt(ifp, m0, 1)) == NULL) { 700 ifp->if_oerrors++; 701 continue; 702 } 703 } 704 #ifdef DIAGNOSTIC 705 if (m0->m_pkthdr.len != len) { 706 printf("%s: length %d should be %d\n", 707 ifp->if_xname, m0->m_pkthdr.len, len); 708 m_freem(m0); 709 ifp->if_oerrors++; 710 continue; 711 } 712 #endif 713 714 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 715 ieee80211_dump_pkt(m0->m_data, m0->m_len, 716 ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 717 IEEE80211_RATE_VAL, -1); 718 719 for (m = m0, len = 0; m != NULL; m = m->m_next) { 720 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 721 m->m_len); 722 len += m->m_len; 723 } 724 m_freem(m0); 725 rate = (ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 726 IEEE80211_RATE_VAL) * 5; 727 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 728 awi_write_4(sc, txd + AWI_TXD_START, frame); 729 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 730 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 731 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 732 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 733 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 734 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 735 sc->sc_txnext = ntxd; 736 737 sc->sc_tx_timer = 5; 738 ifp->if_timer = 1; 739 } 740 } 741 742 static void 743 awi_watchdog(struct ifnet *ifp) 744 { 745 struct awi_softc *sc = ifp->if_softc; 746 u_int32_t prevdone; 747 int ocansleep; 748 749 ifp->if_timer = 0; 750 if (!sc->sc_enabled || sc->sc_invalid) 751 return; 752 753 ocansleep = sc->sc_cansleep; 754 sc->sc_cansleep = 0; 755 if (sc->sc_tx_timer) { 756 if (--sc->sc_tx_timer == 0) { 757 printf("%s: device timeout\n", ifp->if_xname); 758 prevdone = sc->sc_txdone; 759 awi_tx_int(sc); 760 if (sc->sc_txdone == prevdone) { 761 ifp->if_oerrors++; 762 awi_init(ifp); 763 goto out; 764 } 765 } 766 ifp->if_timer = 1; 767 } 768 if (sc->sc_rx_timer) { 769 if (--sc->sc_rx_timer == 0) { 770 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 771 ieee80211_new_state(ifp, IEEE80211_S_SCAN, -1); 772 goto out; 773 } 774 } else 775 ifp->if_timer = 1; 776 } 777 /* TODO: rate control */ 778 ieee80211_watchdog(ifp); 779 out: 780 sc->sc_cansleep = ocansleep; 781 } 782 783 static int 784 awi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 785 { 786 struct awi_softc *sc = ifp->if_softc; 787 struct ifreq *ifr = (struct ifreq *)data; 788 int s, error; 789 790 s = splnet(); 791 /* serialize ioctl, since we may sleep */ 792 if ((error = awi_lock(sc)) != 0) 793 goto cantlock; 794 795 switch (cmd) { 796 case SIOCSIFFLAGS: 797 if (ifp->if_flags & IFF_UP) { 798 if (sc->sc_enabled) { 799 /* 800 * To avoid rescanning another access point, 801 * do not call awi_init() here. Instead, 802 * only reflect promisc mode settings. 803 */ 804 error = awi_mode_init(sc); 805 } else 806 error = awi_init(ifp); 807 } else if (sc->sc_enabled) 808 awi_stop(ifp, 1); 809 break; 810 case SIOCSIFMEDIA: 811 case SIOCGIFMEDIA: 812 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, cmd); 813 break; 814 case SIOCADDMULTI: 815 case SIOCDELMULTI: 816 error = (cmd == SIOCADDMULTI) ? 817 ether_addmulti(ifr, &sc->sc_ic.ic_ec) : 818 ether_delmulti(ifr, &sc->sc_ic.ic_ec); 819 if (error == ENETRESET) { 820 /* do not rescan */ 821 if (sc->sc_enabled) 822 error = awi_mode_init(sc); 823 else 824 error = 0; 825 } 826 break; 827 default: 828 error = ieee80211_ioctl(ifp, cmd, data); 829 if (error == ENETRESET) { 830 if (sc->sc_enabled) 831 error = awi_init(ifp); 832 else 833 error = 0; 834 } 835 break; 836 } 837 awi_unlock(sc); 838 cantlock: 839 splx(s); 840 return error; 841 } 842 843 /* 844 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 845 */ 846 static int 847 awi_media_change(struct ifnet *ifp) 848 { 849 struct awi_softc *sc = ifp->if_softc; 850 struct ieee80211com *ic = &sc->sc_ic; 851 struct ifmedia_entry *ime; 852 int i, rate, error = 0; 853 854 ime = sc->sc_media.ifm_cur; 855 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 856 ic->ic_fixed_rate = -1; 857 } else { 858 rate = ieee80211_media2rate(ime->ifm_media, ic->ic_phytype); 859 if (rate == 0) 860 return EINVAL; 861 for (i = 0; i < IEEE80211_RATE_SIZE; i++) { 862 if ((ic->ic_sup_rates[i] & IEEE80211_RATE_VAL) == rate) 863 break; 864 } 865 if (i == IEEE80211_RATE_SIZE) 866 return EINVAL; 867 ic->ic_fixed_rate = i; 868 } 869 870 /* 871 * combination of mediaopt 872 * 873 * hostap adhoc flag0 opmode no_bssid adhoc_ap comment 874 * + - - HOSTAP 0 0 HostAP 875 * - + - ADHOC 0 0 IBSS 876 * - + + ADHOC 1 0 WaveLAN adhoc 877 * - - + ADHOC 0 1 Melco old Sta 878 * also LINK0 879 * - - - STA 0 0 Infra Station 880 */ 881 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) { 882 if (ic->ic_opmode != IEEE80211_M_HOSTAP) { 883 ic->ic_opmode = IEEE80211_M_HOSTAP; 884 sc->sc_no_bssid = 0; 885 sc->sc_adhoc_ap = 0; 886 error = ENETRESET; 887 } 888 } else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 889 if (ic->ic_opmode != IEEE80211_M_ADHOC || 890 sc->sc_adhoc_ap != 0) { 891 ic->ic_opmode = IEEE80211_M_ADHOC; 892 sc->sc_adhoc_ap = 0; 893 error = ENETRESET; 894 } 895 if (ic->ic_phytype == IEEE80211_T_DS && 896 (ime->ifm_media & IFM_FLAG0)) { 897 if (sc->sc_no_bssid == 0) { 898 sc->sc_no_bssid = 1; 899 error = ENETRESET; 900 } 901 } else { 902 if (sc->sc_no_bssid) { 903 sc->sc_no_bssid = 0; 904 error = ENETRESET; 905 } 906 } 907 } else if (ime->ifm_media & IFM_FLAG0) { 908 if (ic->ic_opmode != IEEE80211_M_ADHOC || 909 sc->sc_adhoc_ap == 0) { 910 ic->ic_opmode = IEEE80211_M_ADHOC; 911 sc->sc_adhoc_ap = 1; 912 sc->sc_no_bssid = 0; 913 error = ENETRESET; 914 } 915 } else { 916 if (ic->ic_opmode != IEEE80211_M_STA) { 917 ic->ic_opmode = IEEE80211_M_STA; 918 sc->sc_no_bssid = 0; 919 sc->sc_adhoc_ap = 0; 920 error = ENETRESET; 921 } 922 } 923 if (error == ENETRESET) { 924 if (sc->sc_enabled) 925 error = awi_init(ifp); 926 else 927 error = 0; 928 } 929 return error; 930 } 931 932 static void 933 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 934 { 935 struct awi_softc *sc = ifp->if_softc; 936 struct ieee80211com *ic = &sc->sc_ic; 937 int rate; 938 939 imr->ifm_status = IFM_AVALID; 940 if (ic->ic_state == IEEE80211_S_RUN) 941 imr->ifm_status |= IFM_ACTIVE; 942 imr->ifm_active = IFM_IEEE80211; 943 if (ic->ic_state == IEEE80211_S_RUN) 944 rate = ic->ic_bss.ni_rates[ic->ic_bss.ni_txrate] & 945 IEEE80211_RATE_VAL; 946 else { 947 if (ic->ic_fixed_rate == -1) 948 rate = 0; 949 else 950 rate = ic->ic_sup_rates[ic->ic_fixed_rate] & 951 IEEE80211_RATE_VAL; 952 } 953 imr->ifm_active |= ieee80211_rate2media(rate, ic->ic_phytype); 954 switch (ic->ic_opmode) { 955 case IEEE80211_M_STA: 956 break; 957 case IEEE80211_M_ADHOC: 958 if (sc->sc_adhoc_ap) 959 imr->ifm_active |= IFM_FLAG0; 960 else { 961 imr->ifm_active |= IFM_IEEE80211_ADHOC; 962 if (sc->sc_no_bssid) 963 imr->ifm_active |= IFM_FLAG0; 964 } 965 break; 966 case IEEE80211_M_HOSTAP: 967 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 968 break; 969 } 970 } 971 972 static int 973 awi_mode_init(struct awi_softc *sc) 974 { 975 struct ifnet *ifp = &sc->sc_ic.ic_if; 976 int n, error; 977 struct ether_multi *enm; 978 struct ether_multistep step; 979 980 /* reinitialize muticast filter */ 981 n = 0; 982 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 983 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 984 (ifp->if_flags & IFF_PROMISC)) { 985 sc->sc_mib_mac.aPromiscuous_Enable = 1; 986 goto set_mib; 987 } 988 sc->sc_mib_mac.aPromiscuous_Enable = 0; 989 ETHER_FIRST_MULTI(step, &sc->sc_ic.ic_ec, enm); 990 while (enm != NULL) { 991 if (n == AWI_GROUP_ADDR_SIZE || 992 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 993 goto set_mib; 994 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 995 enm->enm_addrlo); 996 n++; 997 ETHER_NEXT_MULTI(step, enm); 998 } 999 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1000 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1001 IEEE80211_ADDR_LEN); 1002 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1003 1004 set_mib: 1005 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1006 ifp->if_flags &= ~IFF_ALLMULTI; 1007 else 1008 ifp->if_flags |= IFF_ALLMULTI; 1009 sc->sc_mib_mgt.Wep_Required = 1010 (sc->sc_ic.ic_flags & IEEE80211_F_WEPON) ? AWI_WEP_ON : AWI_WEP_OFF; 1011 1012 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1013 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1014 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1015 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1016 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1017 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1018 return error; 1019 } 1020 return 0; 1021 } 1022 1023 static void 1024 awi_rx_int(struct awi_softc *sc) 1025 { 1026 struct ifnet *ifp = &sc->sc_ic.ic_if; 1027 u_int8_t state, rate, rssi; 1028 u_int16_t len; 1029 u_int32_t frame, next, rstamp, rxoff; 1030 struct mbuf *m; 1031 1032 rxoff = sc->sc_rxdoff; 1033 for (;;) { 1034 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1035 if (state & AWI_RXD_ST_OWN) 1036 break; 1037 if (!(state & AWI_RXD_ST_CONSUMED)) { 1038 if (sc->sc_substate != AWI_ST_NONE) 1039 goto rx_next; 1040 if (state & AWI_RXD_ST_RXERROR) { 1041 ifp->if_ierrors++; 1042 goto rx_next; 1043 } 1044 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1045 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1046 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1047 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1048 0x7fff; 1049 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1050 m = awi_devget(sc, frame, len); 1051 if (m == NULL) { 1052 ifp->if_ierrors++; 1053 goto rx_next; 1054 } 1055 if (state & AWI_RXD_ST_LF) { 1056 /* TODO check my bss */ 1057 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1058 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1059 sc->sc_rx_timer = 10; 1060 ifp->if_timer = 1; 1061 } 1062 if ((ifp->if_flags & IFF_DEBUG) && 1063 (ifp->if_flags & IFF_LINK2)) 1064 ieee80211_dump_pkt(m->m_data, m->m_len, 1065 rate / 5, rssi); 1066 if ((ifp->if_flags & IFF_LINK0) || 1067 sc->sc_adhoc_ap) 1068 m = awi_ether_modcap(sc, m); 1069 if (m == NULL) 1070 ifp->if_ierrors++; 1071 else 1072 ieee80211_input(ifp, m, rssi, rstamp); 1073 } else 1074 sc->sc_rxpend = m; 1075 rx_next: 1076 state |= AWI_RXD_ST_CONSUMED; 1077 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1078 } 1079 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1080 if (next & AWI_RXD_NEXT_LAST) 1081 break; 1082 /* make sure the next pointer is correct */ 1083 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1084 break; 1085 state |= AWI_RXD_ST_OWN; 1086 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1087 rxoff = next & 0x7fff; 1088 } 1089 sc->sc_rxdoff = rxoff; 1090 } 1091 1092 static void 1093 awi_tx_int(struct awi_softc *sc) 1094 { 1095 struct ifnet *ifp = &sc->sc_ic.ic_if; 1096 u_int8_t flags; 1097 1098 while (sc->sc_txdone != sc->sc_txnext) { 1099 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1100 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1101 break; 1102 if (flags & AWI_TXD_ST_ERROR) 1103 ifp->if_oerrors++; 1104 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1105 0x7fff; 1106 } 1107 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1108 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1109 sc->sc_tx_timer = 0; 1110 ifp->if_flags &= ~IFF_OACTIVE; 1111 awi_start(ifp); 1112 } 1113 1114 static struct mbuf * 1115 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1116 { 1117 struct ifnet *ifp = &sc->sc_ic.ic_if; 1118 struct mbuf *m; 1119 struct mbuf *top, **mp; 1120 u_int tlen; 1121 1122 top = sc->sc_rxpend; 1123 mp = ⊤ 1124 if (top != NULL) { 1125 sc->sc_rxpend = NULL; 1126 top->m_pkthdr.len += len; 1127 m = top; 1128 while (*mp != NULL) { 1129 m = *mp; 1130 mp = &m->m_next; 1131 } 1132 if (m->m_flags & M_EXT) 1133 tlen = m->m_ext.ext_size; 1134 else if (m->m_flags & M_PKTHDR) 1135 tlen = MHLEN; 1136 else 1137 tlen = MLEN; 1138 tlen -= m->m_len; 1139 if (tlen > len) 1140 tlen = len; 1141 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1142 off += tlen; 1143 len -= tlen; 1144 } 1145 1146 while (len > 0) { 1147 if (top == NULL) { 1148 MGETHDR(m, M_DONTWAIT, MT_DATA); 1149 if (m == NULL) 1150 return NULL; 1151 m->m_pkthdr.rcvif = ifp; 1152 m->m_pkthdr.len = len; 1153 m->m_len = MHLEN; 1154 m->m_flags |= M_HASFCS; 1155 } else { 1156 MGET(m, M_DONTWAIT, MT_DATA); 1157 if (m == NULL) { 1158 m_freem(top); 1159 return NULL; 1160 } 1161 m->m_len = MLEN; 1162 } 1163 if (len >= MINCLSIZE) { 1164 MCLGET(m, M_DONTWAIT); 1165 if (m->m_flags & M_EXT) 1166 m->m_len = m->m_ext.ext_size; 1167 } 1168 if (top == NULL) { 1169 int hdrlen = sizeof(struct ieee80211_frame) + 1170 sizeof(struct llc); 1171 caddr_t newdata = (caddr_t) 1172 ALIGN(m->m_data + hdrlen) - hdrlen; 1173 m->m_len -= newdata - m->m_data; 1174 m->m_data = newdata; 1175 } 1176 if (m->m_len > len) 1177 m->m_len = len; 1178 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1179 off += m->m_len; 1180 len -= m->m_len; 1181 *mp = m; 1182 mp = &m->m_next; 1183 } 1184 return top; 1185 } 1186 1187 /* 1188 * Initialize hardware and start firmware to accept commands. 1189 * Called everytime after power on firmware. 1190 */ 1191 1192 static int 1193 awi_hw_init(struct awi_softc *sc) 1194 { 1195 u_int8_t status; 1196 u_int16_t intmask; 1197 int i, error; 1198 1199 sc->sc_enab_intr = 0; 1200 sc->sc_invalid = 0; /* XXX: really? */ 1201 awi_drvstate(sc, AWI_DRV_RESET); 1202 1203 /* reset firmware */ 1204 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1205 DELAY(100); 1206 awi_write_1(sc, AWI_SELFTEST, 0); 1207 awi_write_1(sc, AWI_CMD, 0); 1208 awi_write_1(sc, AWI_BANNER, 0); 1209 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1210 DELAY(100); 1211 1212 /* wait for selftest completion */ 1213 for (i = 0; ; i++) { 1214 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1215 printf("%s: failed to complete selftest (timeout)\n", 1216 sc->sc_dev.dv_xname); 1217 return ENXIO; 1218 } 1219 status = awi_read_1(sc, AWI_SELFTEST); 1220 if ((status & 0xf0) == 0xf0) 1221 break; 1222 if (sc->sc_cansleep) { 1223 sc->sc_sleep_cnt++; 1224 (void)tsleep(sc, PWAIT, "awitst", 1); 1225 sc->sc_sleep_cnt--; 1226 } else { 1227 DELAY(1000*1000/hz); 1228 } 1229 } 1230 if (status != AWI_SELFTEST_PASSED) { 1231 printf("%s: failed to complete selftest (code %x)\n", 1232 sc->sc_dev.dv_xname, status); 1233 return ENXIO; 1234 } 1235 1236 /* check banner to confirm firmware write it */ 1237 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1238 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1239 printf("%s: failed to complete selftest (bad banner)\n", 1240 sc->sc_dev.dv_xname); 1241 for (i = 0; i < AWI_BANNER_LEN; i++) 1242 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1243 printf("\n"); 1244 return ENXIO; 1245 } 1246 1247 /* initializing interrupt */ 1248 sc->sc_enab_intr = 1; 1249 error = awi_intr_lock(sc); 1250 if (error) 1251 return error; 1252 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1253 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1254 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1255 awi_write_1(sc, AWI_INTMASK2, 0); 1256 awi_write_1(sc, AWI_INTSTAT, 0); 1257 awi_write_1(sc, AWI_INTSTAT2, 0); 1258 awi_intr_unlock(sc); 1259 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1260 1261 /* issuing interface test command */ 1262 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1263 if (error) { 1264 printf("%s: failed to complete selftest", sc->sc_dev.dv_xname); 1265 if (error == ENXIO) 1266 printf(" (no hardware)\n"); 1267 else if (error != EWOULDBLOCK) 1268 printf(" (error %d)\n", error); 1269 else if (sc->sc_cansleep) 1270 printf(" (lost interrupt)\n"); 1271 else 1272 printf(" (command timeout)\n"); 1273 return error; 1274 } 1275 1276 /* Initialize VBM */ 1277 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1278 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1279 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1280 return 0; 1281 } 1282 1283 /* 1284 * Extract the factory default MIB value from firmware and assign the driver 1285 * default value. 1286 * Called once at attaching the interface. 1287 */ 1288 1289 static int 1290 awi_init_mibs(struct awi_softc *sc) 1291 { 1292 int i, error; 1293 struct awi_chanset *cs; 1294 1295 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1296 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1297 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1298 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1299 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1300 printf("%s: failed to get default mib value (error %d)\n", 1301 sc->sc_dev.dv_xname, error); 1302 return error; 1303 } 1304 1305 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1306 for (cs = awi_chanset; ; cs++) { 1307 if (cs->cs_type == 0) { 1308 printf("%s: failed to set available channel\n", 1309 sc->sc_dev.dv_xname); 1310 return ENXIO; 1311 } 1312 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1313 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1314 break; 1315 } 1316 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1317 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1318 setbit(sc->sc_ic.ic_chan_avail, 1319 IEEE80211_FH_CHAN(i % 3 + 1, i)); 1320 /* 1321 * According to the IEEE 802.11 specification, 1322 * hop pattern parameter for FH phy should be 1323 * incremented by 3 for given hop chanset, i.e., 1324 * the chanset parameter is calculated for given 1325 * hop patter. However, BayStack 650 Access Points 1326 * apparently use fixed hop chanset parameter value 1327 * 1 for any hop pattern. So we also try this 1328 * combination of hop chanset and pattern. 1329 */ 1330 setbit(sc->sc_ic.ic_chan_avail, 1331 IEEE80211_FH_CHAN(1, i)); 1332 } 1333 } else { 1334 for (i = cs->cs_min; i <= cs->cs_max; i++) 1335 setbit(sc->sc_ic.ic_chan_avail, i); 1336 } 1337 sc->sc_cur_chan = cs->cs_def; 1338 1339 sc->sc_mib_local.Fragmentation_Dis = 1; 1340 sc->sc_mib_local.Add_PLCP_Dis = 0; 1341 sc->sc_mib_local.MAC_Hdr_Prsv = 1; 1342 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1343 sc->sc_mib_local.Re_Assembly_Dis = 1; 1344 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1345 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1346 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1347 sc->sc_mib_local.Check_Seq_Cntl_Dis = 1; 1348 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1349 sc->sc_mib_local.Network_Mode = 1; 1350 sc->sc_mib_local.PWD_Lvl = 0; 1351 sc->sc_mib_local.CFP_Mode = 0; 1352 1353 /* allocate buffers */ 1354 sc->sc_txbase = AWI_BUFFERS; 1355 sc->sc_txend = sc->sc_txbase + 1356 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1357 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1358 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1359 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1360 sc->sc_txend - sc->sc_txbase); 1361 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1362 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1363 AWI_BUFFERS_END - sc->sc_txend); 1364 sc->sc_mib_local.Acting_as_AP = 0; 1365 sc->sc_mib_local.Fill_CFP = 0; 1366 1367 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1368 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1369 1370 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1371 sc->sc_mib_mgt.aDTIM_Period = 1; 1372 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1373 return 0; 1374 } 1375 1376 static int 1377 awi_chan_check(void *arg, u_char *chanreq) 1378 { 1379 struct awi_softc *sc = arg; 1380 int i; 1381 struct awi_chanset *cs; 1382 u_char chanlist[(IEEE80211_CHAN_MAX+1)/NBBY]; 1383 1384 for (cs = awi_chanset; cs->cs_type != 0; cs++) { 1385 if (cs->cs_type != sc->sc_mib_phy.IEEE_PHY_Type) 1386 continue; 1387 memset(chanlist, 0, sizeof(chanlist)); 1388 for (i = 0; ; i++) { 1389 if (i == IEEE80211_CHAN_MAX) { 1390 sc->sc_mib_phy.aCurrent_Reg_Domain = 1391 cs->cs_region; 1392 memcpy(sc->sc_ic.ic_chan_avail, chanlist, 1393 sizeof(sc->sc_ic.ic_chan_avail)); 1394 sc->sc_ic.ic_bss.ni_chan = cs->cs_def; 1395 sc->sc_cur_chan = cs->cs_def; 1396 return 0; 1397 } 1398 if (i >= cs->cs_min && i <= cs->cs_max) 1399 setbit(chanlist, i); 1400 else if (isset(chanreq, i)) 1401 break; 1402 } 1403 } 1404 return EINVAL; 1405 } 1406 1407 static int 1408 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1409 { 1410 int error; 1411 u_int8_t size, *ptr; 1412 1413 switch (mib) { 1414 case AWI_MIB_LOCAL: 1415 ptr = (u_int8_t *)&sc->sc_mib_local; 1416 size = sizeof(sc->sc_mib_local); 1417 break; 1418 case AWI_MIB_ADDR: 1419 ptr = (u_int8_t *)&sc->sc_mib_addr; 1420 size = sizeof(sc->sc_mib_addr); 1421 break; 1422 case AWI_MIB_MAC: 1423 ptr = (u_int8_t *)&sc->sc_mib_mac; 1424 size = sizeof(sc->sc_mib_mac); 1425 break; 1426 case AWI_MIB_STAT: 1427 ptr = (u_int8_t *)&sc->sc_mib_stat; 1428 size = sizeof(sc->sc_mib_stat); 1429 break; 1430 case AWI_MIB_MGT: 1431 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1432 size = sizeof(sc->sc_mib_mgt); 1433 break; 1434 case AWI_MIB_PHY: 1435 ptr = (u_int8_t *)&sc->sc_mib_phy; 1436 size = sizeof(sc->sc_mib_phy); 1437 break; 1438 default: 1439 return EINVAL; 1440 } 1441 if (sc->sc_cmd_inprog) { 1442 if ((error = awi_cmd_wait(sc)) != 0) { 1443 if (error == EWOULDBLOCK) 1444 DPRINTF(("awi_mib: cmd %d inprog", 1445 sc->sc_cmd_inprog)); 1446 return error; 1447 } 1448 } 1449 sc->sc_cmd_inprog = cmd; 1450 if (cmd == AWI_CMD_SET_MIB) 1451 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1452 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1453 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1454 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1455 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1456 return error; 1457 if (cmd == AWI_CMD_GET_MIB) { 1458 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1459 #ifdef AWI_DEBUG 1460 if (awi_debug) { 1461 int i; 1462 1463 printf("awi_mib: #%d:", mib); 1464 for (i = 0; i < size; i++) 1465 printf(" %02x", ptr[i]); 1466 printf("\n"); 1467 } 1468 #endif 1469 } 1470 return 0; 1471 } 1472 1473 static int 1474 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1475 { 1476 u_int8_t status; 1477 int error = 0; 1478 #ifdef AWI_DEBUG 1479 static const char *cmdname[] = { 1480 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1481 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1482 }; 1483 #endif 1484 1485 #ifdef AWI_DEBUG 1486 if (awi_debug > 1) { 1487 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1488 printf("awi_cmd: #%d", cmd); 1489 else 1490 printf("awi_cmd: %s", cmdname[cmd]); 1491 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1492 } 1493 #endif 1494 sc->sc_cmd_inprog = cmd; 1495 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1496 awi_write_1(sc, AWI_CMD, cmd); 1497 if (wflag == AWI_NOWAIT) 1498 return EINPROGRESS; 1499 if ((error = awi_cmd_wait(sc)) != 0) 1500 return error; 1501 status = awi_read_1(sc, AWI_CMD_STATUS); 1502 awi_write_1(sc, AWI_CMD, 0); 1503 switch (status) { 1504 case AWI_STAT_OK: 1505 break; 1506 case AWI_STAT_BADPARM: 1507 return EINVAL; 1508 default: 1509 printf("%s: command %d failed %x\n", 1510 sc->sc_dev.dv_xname, cmd, status); 1511 return ENXIO; 1512 } 1513 return 0; 1514 } 1515 1516 static int 1517 awi_cmd_wait(struct awi_softc *sc) 1518 { 1519 int i, error = 0; 1520 1521 i = 0; 1522 while (sc->sc_cmd_inprog) { 1523 if (sc->sc_invalid) 1524 return ENXIO; 1525 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1526 printf("%s: failed to access hardware\n", 1527 sc->sc_dev.dv_xname); 1528 sc->sc_invalid = 1; 1529 return ENXIO; 1530 } 1531 if (sc->sc_cansleep) { 1532 sc->sc_sleep_cnt++; 1533 error = tsleep(sc, PWAIT, "awicmd", 1534 AWI_CMD_TIMEOUT*hz/1000); 1535 sc->sc_sleep_cnt--; 1536 } else { 1537 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1538 awi_cmd_done(sc); 1539 break; 1540 } 1541 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1542 error = EWOULDBLOCK; 1543 else 1544 DELAY(10); 1545 } 1546 if (error) 1547 break; 1548 } 1549 if (error) { 1550 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1551 sc->sc_cmd_inprog, error)); 1552 } 1553 return error; 1554 } 1555 1556 static void 1557 awi_cmd_done(struct awi_softc *sc) 1558 { 1559 u_int8_t cmd, status; 1560 1561 status = awi_read_1(sc, AWI_CMD_STATUS); 1562 if (status == AWI_STAT_IDLE) 1563 return; /* stray interrupt */ 1564 1565 cmd = sc->sc_cmd_inprog; 1566 sc->sc_cmd_inprog = 0; 1567 wakeup(sc); 1568 awi_write_1(sc, AWI_CMD, 0); 1569 1570 if (status != AWI_STAT_OK) { 1571 printf("%s: command %d failed %x\n", 1572 sc->sc_dev.dv_xname, cmd, status); 1573 sc->sc_substate = AWI_ST_NONE; 1574 return; 1575 } 1576 if (sc->sc_substate != AWI_ST_NONE) 1577 (void)ieee80211_new_state(&sc->sc_ic.ic_if, sc->sc_nstate, -1); 1578 } 1579 1580 static int 1581 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1582 { 1583 u_int32_t txd, ntxd, frame; 1584 1585 txd = sc->sc_txnext; 1586 frame = txd + AWI_TXD_SIZE; 1587 if (frame + len > sc->sc_txend) 1588 frame = sc->sc_txbase; 1589 ntxd = frame + len; 1590 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1591 ntxd = sc->sc_txbase; 1592 *framep = frame; 1593 *ntxdp = ntxd; 1594 /* 1595 * Determine if there are any room in ring buffer. 1596 * --- send wait, === new data, +++ conflict (ENOBUFS) 1597 * base........................end 1598 * done----txd=====ntxd OK 1599 * --txd=====done++++ntxd-- full 1600 * --txd=====ntxd done-- OK 1601 * ==ntxd done----txd=== OK 1602 * ==done++++ntxd----txd=== full 1603 * ++ntxd txd=====done++ full 1604 */ 1605 if (txd < ntxd) { 1606 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1607 return ENOBUFS; 1608 } else { 1609 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1610 return ENOBUFS; 1611 } 1612 return 0; 1613 } 1614 1615 static int 1616 awi_lock(struct awi_softc *sc) 1617 { 1618 int error = 0; 1619 1620 if (curproc == NULL) { 1621 /* 1622 * XXX 1623 * Though driver ioctl should be called with context, 1624 * KAME ipv6 stack calls ioctl in interrupt for now. 1625 * We simply abort the request if there are other 1626 * ioctl requests in progress. 1627 */ 1628 if (sc->sc_busy) { 1629 return EWOULDBLOCK; 1630 if (sc->sc_invalid) 1631 return ENXIO; 1632 } 1633 sc->sc_busy = 1; 1634 sc->sc_cansleep = 0; 1635 return 0; 1636 } 1637 while (sc->sc_busy) { 1638 if (sc->sc_invalid) 1639 return ENXIO; 1640 sc->sc_sleep_cnt++; 1641 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1642 sc->sc_sleep_cnt--; 1643 if (error) 1644 return error; 1645 } 1646 sc->sc_busy = 1; 1647 sc->sc_cansleep = 1; 1648 return 0; 1649 } 1650 1651 static void 1652 awi_unlock(struct awi_softc *sc) 1653 { 1654 sc->sc_busy = 0; 1655 sc->sc_cansleep = 0; 1656 if (sc->sc_sleep_cnt) 1657 wakeup(sc); 1658 } 1659 1660 static int 1661 awi_intr_lock(struct awi_softc *sc) 1662 { 1663 u_int8_t status; 1664 int i, retry; 1665 1666 status = 1; 1667 for (retry = 0; retry < 10; retry++) { 1668 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1669 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1670 break; 1671 DELAY(5); 1672 } 1673 if (status != 0) 1674 break; 1675 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1676 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1677 break; 1678 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1679 } 1680 if (status != 0) { 1681 printf("%s: failed to lock interrupt\n", 1682 sc->sc_dev.dv_xname); 1683 return ENXIO; 1684 } 1685 return 0; 1686 } 1687 1688 static void 1689 awi_intr_unlock(struct awi_softc *sc) 1690 { 1691 1692 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1693 } 1694 1695 static int 1696 awi_newstate(void *arg, enum ieee80211_state nstate) 1697 { 1698 struct awi_softc *sc = arg; 1699 struct ieee80211com *ic = &sc->sc_ic; 1700 struct ieee80211_node *ni; 1701 struct ifnet *ifp = &ic->ic_if; 1702 int error; 1703 u_int8_t newmode; 1704 enum ieee80211_state ostate; 1705 #ifdef AWI_DEBUG 1706 static const char *stname[] = 1707 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1708 static const char *substname[] = 1709 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1710 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1711 #endif /* AWI_DEBUG */ 1712 1713 ostate = ic->ic_state; 1714 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1715 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1716 1717 /* set LED */ 1718 switch (nstate) { 1719 case IEEE80211_S_INIT: 1720 awi_drvstate(sc, AWI_DRV_RESET); 1721 break; 1722 case IEEE80211_S_SCAN: 1723 if (ic->ic_opmode == IEEE80211_M_ADHOC) 1724 awi_drvstate(sc, AWI_DRV_ADHSC); 1725 else 1726 awi_drvstate(sc, AWI_DRV_INFSY); 1727 break; 1728 case IEEE80211_S_AUTH: 1729 awi_drvstate(sc, AWI_DRV_INFSY); 1730 break; 1731 case IEEE80211_S_ASSOC: 1732 awi_drvstate(sc, AWI_DRV_INFAUTH); 1733 break; 1734 case IEEE80211_S_RUN: 1735 if (ic->ic_opmode == IEEE80211_M_ADHOC) 1736 awi_drvstate(sc, AWI_DRV_ADHSY); 1737 else 1738 awi_drvstate(sc, AWI_DRV_INFASSOC); 1739 break; 1740 } 1741 1742 if (nstate == IEEE80211_S_INIT) { 1743 sc->sc_substate = AWI_ST_NONE; 1744 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1745 return 0; 1746 } 1747 1748 /* state transition */ 1749 if (nstate == IEEE80211_S_SCAN) { 1750 /* SCAN substate */ 1751 if (sc->sc_substate == AWI_ST_NONE) { 1752 sc->sc_nstate = nstate; /* next state in transition */ 1753 sc->sc_substate = AWI_ST_SCAN_INIT; 1754 } 1755 switch (sc->sc_substate) { 1756 case AWI_ST_SCAN_INIT: 1757 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1758 switch (ostate) { 1759 case IEEE80211_S_RUN: 1760 /* beacon miss */ 1761 if (ifp->if_flags & IFF_DEBUG) 1762 printf("%s: no recent beacons from %s;" 1763 " rescanning\n", 1764 ifp->if_xname, 1765 ether_sprintf(ic->ic_bss.ni_bssid)); 1766 /* FALLTHRU */ 1767 case IEEE80211_S_AUTH: 1768 case IEEE80211_S_ASSOC: 1769 /* timeout restart scan */ 1770 while ((ni = TAILQ_FIRST(&ic->ic_node)) != NULL) 1771 ieee80211_free_node(ic, ni); 1772 /* FALLTHRU */ 1773 case IEEE80211_S_INIT: 1774 ic->ic_flags |= IEEE80211_F_ASCAN; 1775 ic->ic_scan_timer = 0; 1776 /* FALLTHRU */ 1777 case IEEE80211_S_SCAN: 1778 /* scan next */ 1779 break; 1780 } 1781 if (ic->ic_flags & IEEE80211_F_ASCAN) 1782 newmode = AWI_SCAN_ACTIVE; 1783 else 1784 newmode = AWI_SCAN_PASSIVE; 1785 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1786 sc->sc_mib_mgt.aScan_Mode = newmode; 1787 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1788 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1789 break; 1790 } 1791 /* FALLTHRU */ 1792 case AWI_ST_SCAN_SETMIB: 1793 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1794 if (sc->sc_cmd_inprog) { 1795 if ((error = awi_cmd_wait(sc)) != 0) 1796 break; 1797 } 1798 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1799 ni = &ic->ic_bss; 1800 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1801 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1802 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1803 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1804 awi_write_1(sc, AWI_CA_SCAN_SET, 1805 IEEE80211_FH_CHANSET(ni->ni_chan)); 1806 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1807 IEEE80211_FH_CHANPAT(ni->ni_chan)); 1808 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1809 } else { 1810 awi_write_1(sc, AWI_CA_SCAN_SET, ni->ni_chan); 1811 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1812 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1813 } 1814 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1815 sc->sc_cur_chan = ni->ni_chan; 1816 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1817 != 0) 1818 break; 1819 /* FALLTHRU */ 1820 case AWI_ST_SCAN_SCCMD: 1821 if (ic->ic_scan_timer == 0) 1822 ic->ic_scan_timer = 1823 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1824 IEEE80211_ASCAN_WAIT : IEEE80211_PSCAN_WAIT; 1825 ifp->if_timer = 1; 1826 ic->ic_state = nstate; 1827 sc->sc_substate = AWI_ST_NONE; 1828 error = EINPROGRESS; 1829 break; 1830 default: 1831 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1832 stname[nstate], substname[sc->sc_substate])); 1833 sc->sc_substate = AWI_ST_NONE; 1834 error = EIO; 1835 break; 1836 } 1837 return error; 1838 } 1839 1840 if (ostate == IEEE80211_S_SCAN) { 1841 /* set SSID and channel */ 1842 /* substate */ 1843 if (sc->sc_substate == AWI_ST_NONE) { 1844 sc->sc_nstate = nstate; /* next state in transition */ 1845 sc->sc_substate = AWI_ST_SUB_INIT; 1846 } 1847 ni = &ic->ic_bss; 1848 switch (sc->sc_substate) { 1849 case AWI_ST_SUB_INIT: 1850 sc->sc_substate = AWI_ST_SUB_SETSS; 1851 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1852 ni->ni_bssid); 1853 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1854 AWI_ESS_ID_SIZE); 1855 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1856 IEEE80211_ELEMID_SSID; 1857 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1858 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1859 ni->ni_essid, ni->ni_esslen); 1860 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1861 ni->ni_intval); 1862 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1863 AWI_NOWAIT)) != 0) 1864 break; 1865 /* FALLTHRU */ 1866 case AWI_ST_SUB_SETSS: 1867 sc->sc_substate = AWI_ST_SUB_SYNC; 1868 if (sc->sc_cmd_inprog) { 1869 if ((error = awi_cmd_wait(sc)) != 0) 1870 break; 1871 } 1872 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1873 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1874 awi_write_1(sc, AWI_CA_SYNC_SET, 1875 IEEE80211_FH_CHANSET(ni->ni_chan)); 1876 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1877 IEEE80211_FH_CHANPAT(ni->ni_chan)); 1878 awi_write_1(sc, AWI_CA_SYNC_IDX, 1879 ni->ni_fhindex); 1880 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1881 ni->ni_fhdwell); 1882 } else { 1883 awi_write_1(sc, AWI_CA_SYNC_SET, ni->ni_chan); 1884 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1885 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1886 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1887 } 1888 if ((ic->ic_flags & IEEE80211_F_SIBSS) && 1889 !sc->sc_no_bssid) 1890 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1891 else 1892 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1893 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1894 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1895 ni->ni_tstamp, 8); 1896 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1897 sc->sc_cur_chan = ni->ni_chan; 1898 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1899 != 0) 1900 break; 1901 /* FALLTHRU */ 1902 case AWI_ST_SUB_SYNC: 1903 sc->sc_substate = AWI_ST_NONE; 1904 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1905 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1906 AWI_MIB_MGT, AWI_WAIT)) != 0) 1907 break; 1908 IEEE80211_ADDR_COPY(ni->ni_bssid, 1909 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1910 } else { 1911 if (nstate == IEEE80211_S_RUN) { 1912 sc->sc_rx_timer = 10; 1913 ifp->if_timer = 1; 1914 } 1915 } 1916 error = 0; 1917 break; 1918 default: 1919 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1920 stname[nstate], substname[sc->sc_substate])); 1921 sc->sc_substate = AWI_ST_NONE; 1922 error = EIO; 1923 break; 1924 } 1925 return error; 1926 } 1927 1928 sc->sc_substate = AWI_ST_NONE; 1929 1930 return 0; 1931 } 1932 1933 static struct mbuf * 1934 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 1935 { 1936 struct ieee80211com *ic = &sc->sc_ic; 1937 struct ieee80211_node *ni = &ic->ic_bss; 1938 struct ether_header *eh; 1939 struct ieee80211_frame *wh; 1940 1941 if (m->m_len < sizeof(struct ether_header)) { 1942 m = m_pullup(m, sizeof(struct ether_header)); 1943 if (m == NULL) 1944 return NULL; 1945 } 1946 eh = mtod(m, struct ether_header *); 1947 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 1948 if (m == NULL) 1949 return NULL; 1950 wh = mtod(m, struct ieee80211_frame *); 1951 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 1952 *(u_int16_t *)wh->i_dur = 0; 1953 *(u_int16_t *)wh->i_seq = 1954 htole16(ni->ni_txseq << IEEE80211_SEQ_SEQ_SHIFT); 1955 ni->ni_txseq++; 1956 if (ic->ic_opmode == IEEE80211_M_ADHOC) { 1957 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 1958 if (sc->sc_adhoc_ap) 1959 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 1960 else 1961 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 1962 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 1963 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 1964 } else { 1965 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 1966 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 1967 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 1968 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 1969 } 1970 return m; 1971 } 1972 1973 static struct mbuf * 1974 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 1975 { 1976 struct ieee80211com *ic = &sc->sc_ic; 1977 struct ether_header eh; 1978 struct ieee80211_frame wh; 1979 struct llc *llc; 1980 1981 if (m->m_len < sizeof(wh) + sizeof(eh)) { 1982 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 1983 if (m == NULL) 1984 return NULL; 1985 } 1986 memcpy(&wh, mtod(m, caddr_t), sizeof(wh)); 1987 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 1988 return m; 1989 memcpy(&eh, mtod(m, caddr_t) + sizeof(wh), sizeof(eh)); 1990 m_adj(m, sizeof(eh) - sizeof(*llc)); 1991 if (ic->ic_opmode == IEEE80211_M_ADHOC) 1992 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 1993 memcpy(mtod(m, caddr_t), &wh, sizeof(wh)); 1994 llc = (struct llc *)(mtod(m, caddr_t) + sizeof(wh)); 1995 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 1996 llc->llc_control = LLC_UI; 1997 llc->llc_snap.org_code[0] = 0; 1998 llc->llc_snap.org_code[1] = 0; 1999 llc->llc_snap.org_code[2] = 0; 2000 llc->llc_snap.ether_type = eh.ether_type; 2001 return m; 2002 } 2003
Indexes created Sat Oct 18 17:09:52 GMT 2025