awi.c revision 1.54
1 /* $NetBSD: awi.c,v 1.54 2003/10/13 08:10:48 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 1.54 2003/10/13 08:10:48 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> 109 110 #include <net80211/ieee80211_var.h> 111 #include <net80211/ieee80211_compat.h> 112 113 #ifdef INET 114 #include <netinet/in.h> 115 #include <netinet/in_systm.h> 116 #ifdef __NetBSD__ 117 #include <netinet/if_inarp.h> 118 #else 119 #include <netinet/if_ether.h> 120 #endif 121 #endif 122 123 #if NBPFILTER > 0 124 #include <net/bpf.h> 125 #endif 126 127 #include <machine/cpu.h> 128 #include <machine/bus.h> 129 #include <machine/intr.h> 130 131 #include <dev/ic/am79c930reg.h> 132 #include <dev/ic/am79c930var.h> 133 #include <dev/ic/awireg.h> 134 #include <dev/ic/awivar.h> 135 136 static int awi_init(struct ifnet *); 137 static void awi_stop(struct ifnet *, int); 138 static void awi_start(struct ifnet *); 139 static void awi_watchdog(struct ifnet *); 140 static int awi_ioctl(struct ifnet *, u_long, caddr_t); 141 static int awi_media_change(struct ifnet *); 142 static void awi_media_status(struct ifnet *, struct ifmediareq *); 143 static int awi_mode_init(struct awi_softc *); 144 static void awi_rx_int(struct awi_softc *); 145 static void awi_tx_int(struct awi_softc *); 146 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 147 static int awi_hw_init(struct awi_softc *); 148 static int awi_init_mibs(struct awi_softc *); 149 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 150 static int awi_cmd(struct awi_softc *, u_int8_t, int); 151 static int awi_cmd_wait(struct awi_softc *); 152 static void awi_cmd_done(struct awi_softc *); 153 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 154 static int awi_lock(struct awi_softc *); 155 static void awi_unlock(struct awi_softc *); 156 static int awi_intr_lock(struct awi_softc *); 157 static void awi_intr_unlock(struct awi_softc *); 158 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 159 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 160 struct ieee80211_node *, int, int, u_int32_t); 161 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 162 int); 163 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 164 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 165 166 /* unalligned little endian access */ 167 #define LE_READ_2(p) \ 168 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 169 #define LE_READ_4(p) \ 170 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 171 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 172 #define LE_WRITE_2(p, v) \ 173 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 174 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 175 #define LE_WRITE_4(p, v) \ 176 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 177 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 178 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 179 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 180 181 struct awi_chanset awi_chanset[] = { 182 /* PHY type domain min max def */ 183 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 184 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 185 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 186 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 187 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 188 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 189 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 190 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 191 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 192 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 193 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 194 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 195 { 0, 0 } 196 }; 197 198 #ifdef AWI_DEBUG 199 int awi_debug; 200 201 #define DPRINTF(X) if (awi_debug) printf X 202 #define DPRINTF2(X) if (awi_debug > 1) printf X 203 #else 204 #define DPRINTF(X) 205 #define DPRINTF2(X) 206 #endif 207 208 int 209 awi_attach(struct awi_softc *sc) 210 { 211 struct ieee80211com *ic = &sc->sc_ic; 212 struct ifnet *ifp = &ic->ic_if; 213 int s, i, error, nrate; 214 int mword; 215 216 s = splnet(); 217 sc->sc_busy = 1; 218 sc->sc_substate = AWI_ST_NONE; 219 if ((error = awi_hw_init(sc)) != 0) { 220 sc->sc_invalid = 1; 221 splx(s); 222 return error; 223 } 224 error = awi_init_mibs(sc); 225 if (error != 0) { 226 sc->sc_invalid = 1; 227 splx(s); 228 return error; 229 } 230 ifp->if_softc = sc; 231 ifp->if_flags = 232 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST | IFF_NOTRAILERS; 233 ifp->if_ioctl = awi_ioctl; 234 ifp->if_start = awi_start; 235 ifp->if_init = awi_init; 236 ifp->if_stop = awi_stop; 237 ifp->if_watchdog = awi_watchdog; 238 IFQ_SET_READY(&ifp->if_snd); 239 memcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); 240 241 ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP; 242 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) 243 ic->ic_phytype = IEEE80211_T_FH; 244 else { 245 ic->ic_phytype = IEEE80211_T_DS; 246 ic->ic_caps |= IEEE80211_C_AHDEMO; 247 } 248 ic->ic_opmode = IEEE80211_M_STA; 249 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 250 memcpy(ic->ic_sup_rates[IEEE80211_MODE_FH].rs_rates, 251 sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 252 ic->ic_sup_rates[IEEE80211_MODE_FH].rs_nrates = nrate; 253 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 254 255 printf("%s: IEEE802.11 %s (firmware %s)\n", sc->sc_dev.dv_xname, 256 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 257 printf("%s: 802.11 address: %s\n", sc->sc_dev.dv_xname, 258 ether_sprintf(ic->ic_myaddr)); 259 260 if_attach(ifp); 261 ieee80211_ifattach(ifp); 262 263 sc->sc_newstate = ic->ic_newstate; 264 ic->ic_newstate = awi_newstate; 265 #if 0 266 ic->ic_chancheck = awi_chan_check; 267 #endif 268 269 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 270 ic->ic_recv_mgmt = awi_recv_mgmt; 271 272 sc->sc_send_mgmt = ic->ic_send_mgmt; 273 ic->ic_send_mgmt = awi_send_mgmt; 274 275 ieee80211_media_init(ifp, awi_media_change, awi_media_status); 276 277 /* Melco compatibility mode. */ 278 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 279 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 280 ADD(IFM_AUTO, IFM_FLAG0); 281 282 for (i = 0; i < nrate; i++) { 283 mword = ieee80211_rate2media(ic, 284 ic->ic_sup_rates[IEEE80211_MODE_FH].rs_rates[i], 285 (ic->ic_phytype == IEEE80211_T_FH) ? IEEE80211_MODE_FH 286 : IEEE80211_MODE_11B); 287 if (mword == 0) 288 continue; 289 ADD(mword, IFM_FLAG0); 290 } 291 #undef ADD 292 293 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 294 printf("%s: WARNING: unable to establish shutdown hook\n", 295 sc->sc_dev.dv_xname); 296 if ((sc->sc_powerhook = powerhook_establish(awi_power, sc)) == NULL) 297 printf("%s: WARNING: unable to establish power hook\n", 298 sc->sc_dev.dv_xname); 299 sc->sc_attached = 1; 300 splx(s); 301 302 /* ready to accept ioctl */ 303 awi_unlock(sc); 304 305 return 0; 306 } 307 308 int 309 awi_detach(struct awi_softc *sc) 310 { 311 struct ifnet *ifp = &sc->sc_ic.ic_if; 312 int s; 313 314 if (!sc->sc_attached) 315 return 0; 316 317 s = splnet(); 318 sc->sc_invalid = 1; 319 awi_stop(ifp, 1); 320 while (sc->sc_sleep_cnt > 0) { 321 wakeup(sc); 322 (void)tsleep(sc, PWAIT, "awidet", 1); 323 } 324 ieee80211_ifdetach(ifp); 325 if_detach(ifp); 326 shutdownhook_disestablish(sc->sc_sdhook); 327 powerhook_disestablish(sc->sc_powerhook); 328 splx(s); 329 return 0; 330 } 331 332 int 333 awi_activate(struct device *self, enum devact act) 334 { 335 struct awi_softc *sc = (struct awi_softc *)self; 336 struct ifnet *ifp = &sc->sc_ic.ic_if; 337 int s, error = 0; 338 339 s = splnet(); 340 switch (act) { 341 case DVACT_ACTIVATE: 342 error = EOPNOTSUPP; 343 break; 344 case DVACT_DEACTIVATE: 345 sc->sc_invalid = 1; 346 if_deactivate(ifp); 347 break; 348 } 349 splx(s); 350 return error; 351 } 352 353 void 354 awi_power(int why, void *arg) 355 { 356 struct awi_softc *sc = arg; 357 struct ifnet *ifp = &sc->sc_ic.ic_if; 358 int s; 359 int ocansleep; 360 361 DPRINTF(("awi_power: %d\n", why)); 362 s = splnet(); 363 ocansleep = sc->sc_cansleep; 364 sc->sc_cansleep = 0; 365 switch (why) { 366 case PWR_SUSPEND: 367 case PWR_STANDBY: 368 awi_stop(ifp, 1); 369 break; 370 case PWR_RESUME: 371 if (ifp->if_flags & IFF_UP) { 372 awi_init(ifp); 373 (void)awi_intr(sc); /* make sure */ 374 } 375 break; 376 case PWR_SOFTSUSPEND: 377 case PWR_SOFTSTANDBY: 378 case PWR_SOFTRESUME: 379 break; 380 } 381 sc->sc_cansleep = ocansleep; 382 splx(s); 383 } 384 385 void 386 awi_shutdown(void *arg) 387 { 388 struct awi_softc *sc = arg; 389 struct ifnet *ifp = &sc->sc_ic.ic_if; 390 391 if (sc->sc_attached) 392 awi_stop(ifp, 1); 393 } 394 395 int 396 awi_intr(void *arg) 397 { 398 struct awi_softc *sc = arg; 399 u_int16_t status; 400 int error, handled = 0, ocansleep; 401 #ifdef AWI_DEBUG 402 static const char *intname[] = { 403 "CMD", "RX", "TX", "SCAN_CMPLT", 404 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 405 "TXDATA", "TXBCAST", "TXPS", "TXCF", 406 "TXMGT", "#13", "RXDATA", "RXMGT" 407 }; 408 #endif 409 410 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) 411 return 0; 412 413 am79c930_gcr_setbits(&sc->sc_chip, 414 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 415 awi_write_1(sc, AWI_DIS_PWRDN, 1); 416 ocansleep = sc->sc_cansleep; 417 sc->sc_cansleep = 0; 418 419 for (;;) { 420 if ((error = awi_intr_lock(sc)) != 0) 421 break; 422 status = awi_read_1(sc, AWI_INTSTAT); 423 awi_write_1(sc, AWI_INTSTAT, 0); 424 awi_write_1(sc, AWI_INTSTAT, 0); 425 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 426 awi_write_1(sc, AWI_INTSTAT2, 0); 427 DELAY(10); 428 awi_intr_unlock(sc); 429 if (!sc->sc_cmd_inprog) 430 status &= ~AWI_INT_CMD; /* make sure */ 431 if (status == 0) 432 break; 433 #ifdef AWI_DEBUG 434 if (awi_debug > 1) { 435 int i; 436 437 printf("awi_intr: status 0x%04x", status); 438 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 439 i++) { 440 if (status & (1 << i)) 441 printf(" %s", intname[i]); 442 } 443 printf("\n"); 444 } 445 #endif 446 handled = 1; 447 if (status & AWI_INT_RX) 448 awi_rx_int(sc); 449 if (status & AWI_INT_TX) 450 awi_tx_int(sc); 451 if (status & AWI_INT_CMD) 452 awi_cmd_done(sc); 453 if (status & AWI_INT_SCAN_CMPLT) { 454 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 455 sc->sc_substate == AWI_ST_NONE) 456 ieee80211_next_scan(&sc->sc_ic.ic_if); 457 } 458 } 459 sc->sc_cansleep = ocansleep; 460 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 461 awi_write_1(sc, AWI_DIS_PWRDN, 0); 462 return handled; 463 } 464 465 static int 466 awi_init(struct ifnet *ifp) 467 { 468 struct awi_softc *sc = ifp->if_softc; 469 struct ieee80211com *ic = &sc->sc_ic; 470 struct ieee80211_node *ni = ic->ic_bss; 471 int error; 472 473 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 474 if (sc->sc_enabled) { 475 awi_stop(ifp, 0); 476 } else { 477 if (sc->sc_enable) 478 (*sc->sc_enable)(sc); 479 sc->sc_enabled = 1; 480 if ((error = awi_hw_init(sc)) != 0) { 481 awi_stop(ifp, 1); 482 return error; 483 } 484 } 485 ic->ic_state = IEEE80211_S_INIT; 486 487 ic->ic_flags &= ~IEEE80211_F_IBSSON; 488 switch (ic->ic_opmode) { 489 case IEEE80211_M_STA: 490 sc->sc_mib_local.Network_Mode = 1; 491 sc->sc_mib_local.Acting_as_AP = 0; 492 break; 493 case IEEE80211_M_IBSS: 494 ic->ic_flags |= IEEE80211_F_IBSSON; 495 case IEEE80211_M_AHDEMO: 496 sc->sc_mib_local.Network_Mode = 0; 497 sc->sc_mib_local.Acting_as_AP = 0; 498 break; 499 case IEEE80211_M_HOSTAP: 500 sc->sc_mib_local.Network_Mode = 1; 501 sc->sc_mib_local.Acting_as_AP = 1; 502 break; 503 case IEEE80211_M_MONITOR: 504 return ENODEV; 505 } 506 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 507 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 508 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 509 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 510 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 511 ic->ic_des_esslen); 512 513 if ((error = awi_mode_init(sc)) != 0) { 514 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 515 awi_stop(ifp, 1); 516 return error; 517 } 518 519 /* start transmitter */ 520 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 521 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 522 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 523 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 524 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 525 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 526 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 527 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 528 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 529 awi_write_4(sc, AWI_CA_TX_MGT, 0); 530 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 531 awi_write_4(sc, AWI_CA_TX_PS, 0); 532 awi_write_4(sc, AWI_CA_TX_CF, 0); 533 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 534 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 535 awi_stop(ifp, 1); 536 return error; 537 } 538 539 /* start receiver */ 540 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 541 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 542 awi_stop(ifp, 1); 543 return error; 544 } 545 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 546 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 547 548 ifp->if_flags |= IFF_RUNNING; 549 ifp->if_flags &= ~IFF_OACTIVE; 550 ic->ic_state = IEEE80211_S_INIT; 551 552 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 553 ic->ic_opmode == IEEE80211_M_HOSTAP) { 554 ni->ni_chan = ic->ic_ibss_chan; 555 ni->ni_intval = ic->ic_lintval; 556 ni->ni_rssi = 0; 557 ni->ni_rstamp = 0; 558 memset(ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 559 ni->ni_rates = 560 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 561 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 562 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 563 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 564 ni->ni_esslen = ic->ic_des_esslen; 565 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 566 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 567 if (ic->ic_phytype == IEEE80211_T_FH) { 568 ni->ni_fhdwell = 200; /* XXX */ 569 ni->ni_fhindex = 1; 570 } 571 } else { 572 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 573 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 574 ni->ni_esslen = 0; 575 } 576 if (ic->ic_flags & IEEE80211_F_WEPON) 577 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 578 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 579 ic->ic_flags |= IEEE80211_F_SIBSS; 580 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 581 sc->sc_substate = AWI_ST_NONE; 582 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 583 } else { 584 /* XXX check sc->sc_cur_chan */ 585 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 586 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 587 } 588 return 0; 589 } 590 591 static void 592 awi_stop(struct ifnet *ifp, int disable) 593 { 594 struct awi_softc *sc = ifp->if_softc; 595 596 if (!sc->sc_enabled) 597 return; 598 599 DPRINTF(("awi_stop(%d)\n", disable)); 600 601 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 602 603 if (!sc->sc_invalid) { 604 if (sc->sc_cmd_inprog) 605 (void)awi_cmd_wait(sc); 606 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 607 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 608 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 609 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 610 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 611 awi_write_1(sc, AWI_CA_FTX_PS, 0); 612 awi_write_1(sc, AWI_CA_FTX_CF, 0); 613 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 614 } 615 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 616 ifp->if_timer = 0; 617 sc->sc_tx_timer = sc->sc_rx_timer = 0; 618 if (sc->sc_rxpend != NULL) { 619 m_freem(sc->sc_rxpend); 620 sc->sc_rxpend = NULL; 621 } 622 IFQ_PURGE(&ifp->if_snd); 623 624 if (disable) { 625 if (sc->sc_disable) 626 (*sc->sc_disable)(sc); 627 sc->sc_enabled = 0; 628 } 629 } 630 631 static void 632 awi_start(struct ifnet *ifp) 633 { 634 struct awi_softc *sc = ifp->if_softc; 635 struct ieee80211com *ic = &sc->sc_ic; 636 struct ieee80211_node *ni; 637 struct ieee80211_frame *wh; 638 struct mbuf *m, *m0; 639 int len, dowep; 640 u_int32_t txd, frame, ntxd; 641 u_int8_t rate; 642 643 if (!sc->sc_enabled || sc->sc_invalid) 644 return; 645 646 for (;;) { 647 txd = sc->sc_txnext; 648 IF_POLL(&ic->ic_mgtq, m0); 649 dowep = 0; 650 if (m0 != NULL) { 651 len = m0->m_pkthdr.len; 652 if (awi_next_txd(sc, len, &frame, &ntxd)) { 653 ifp->if_flags |= IFF_OACTIVE; 654 break; 655 } 656 IF_DEQUEUE(&ic->ic_mgtq, m0); 657 } else { 658 if (ic->ic_state != IEEE80211_S_RUN) 659 break; 660 IFQ_POLL(&ifp->if_snd, m0); 661 if (m0 == NULL) 662 break; 663 /* 664 * Need to calculate the real length to determine 665 * if the transmit buffer has a room for the packet. 666 */ 667 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 668 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 669 len += sizeof(struct llc) - 670 sizeof(struct ether_header); 671 if (ic->ic_flags & IEEE80211_F_WEPON) { 672 dowep = 1; 673 len += IEEE80211_WEP_IVLEN + 674 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 675 } 676 if (awi_next_txd(sc, len, &frame, &ntxd)) { 677 ifp->if_flags |= IFF_OACTIVE; 678 break; 679 } 680 IFQ_DEQUEUE(&ifp->if_snd, m0); 681 ifp->if_opackets++; 682 #if NBPFILTER > 0 683 if (ifp->if_bpf) 684 bpf_mtap(ifp->if_bpf, m0); 685 #endif 686 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 687 m0 = awi_ether_encap(sc, m0); 688 else 689 m0 = ieee80211_encap(ifp, m0, &ni); 690 if (m0 == NULL) { 691 ifp->if_oerrors++; 692 continue; 693 } 694 if (ni != NULL && ni != ic->ic_bss) 695 ieee80211_free_node(ic, ni); 696 wh = mtod(m0, struct ieee80211_frame *); 697 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 698 (ic->ic_opmode == IEEE80211_M_HOSTAP || 699 ic->ic_opmode == IEEE80211_M_IBSS) && 700 sc->sc_adhoc_ap == 0 && 701 (ifp->if_flags & IFF_LINK0) == 0 && 702 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 703 IEEE80211_FC0_TYPE_DATA && ni == NULL) { 704 m_freem(m0); 705 ifp->if_oerrors++; 706 continue; 707 } 708 } 709 #if NBPFILTER > 0 710 if (ic->ic_rawbpf) 711 bpf_mtap(ic->ic_rawbpf, m0); 712 #endif 713 if (dowep) { 714 if ((m0 = ieee80211_wep_crypt(ifp, m0, 1)) == NULL) { 715 ifp->if_oerrors++; 716 continue; 717 } 718 } 719 #ifdef DIAGNOSTIC 720 if (m0->m_pkthdr.len != len) { 721 printf("%s: length %d should be %d\n", 722 ifp->if_xname, m0->m_pkthdr.len, len); 723 m_freem(m0); 724 ifp->if_oerrors++; 725 continue; 726 } 727 #endif 728 729 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 730 ieee80211_dump_pkt(m0->m_data, m0->m_len, 731 ic->ic_bss->ni_rates. 732 rs_rates[ic->ic_bss->ni_txrate] & 733 IEEE80211_RATE_VAL, -1); 734 735 for (m = m0, len = 0; m != NULL; m = m->m_next) { 736 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 737 m->m_len); 738 len += m->m_len; 739 } 740 m_freem(m0); 741 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 742 IEEE80211_RATE_VAL) * 5; 743 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 744 awi_write_4(sc, txd + AWI_TXD_START, frame); 745 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 746 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 747 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 748 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 749 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 750 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 751 sc->sc_txnext = ntxd; 752 753 sc->sc_tx_timer = 5; 754 ifp->if_timer = 1; 755 } 756 } 757 758 static void 759 awi_watchdog(struct ifnet *ifp) 760 { 761 struct awi_softc *sc = ifp->if_softc; 762 u_int32_t prevdone; 763 int ocansleep; 764 765 ifp->if_timer = 0; 766 if (!sc->sc_enabled || sc->sc_invalid) 767 return; 768 769 ocansleep = sc->sc_cansleep; 770 sc->sc_cansleep = 0; 771 if (sc->sc_tx_timer) { 772 if (--sc->sc_tx_timer == 0) { 773 printf("%s: device timeout\n", ifp->if_xname); 774 prevdone = sc->sc_txdone; 775 awi_tx_int(sc); 776 if (sc->sc_txdone == prevdone) { 777 ifp->if_oerrors++; 778 awi_init(ifp); 779 goto out; 780 } 781 } 782 ifp->if_timer = 1; 783 } 784 if (sc->sc_rx_timer) { 785 if (--sc->sc_rx_timer == 0) { 786 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 787 ieee80211_new_state(&sc->sc_ic, 788 IEEE80211_S_SCAN, -1); 789 goto out; 790 } 791 } else 792 ifp->if_timer = 1; 793 } 794 /* TODO: rate control */ 795 ieee80211_watchdog(ifp); 796 out: 797 sc->sc_cansleep = ocansleep; 798 } 799 800 static int 801 awi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 802 { 803 struct awi_softc *sc = ifp->if_softc; 804 struct ifreq *ifr = (struct ifreq *)data; 805 int s, error; 806 807 s = splnet(); 808 /* serialize ioctl, since we may sleep */ 809 if ((error = awi_lock(sc)) != 0) 810 goto cantlock; 811 812 switch (cmd) { 813 case SIOCSIFFLAGS: 814 if (ifp->if_flags & IFF_UP) { 815 if (sc->sc_enabled) { 816 /* 817 * To avoid rescanning another access point, 818 * do not call awi_init() here. Instead, 819 * only reflect promisc mode settings. 820 */ 821 error = awi_mode_init(sc); 822 } else 823 error = awi_init(ifp); 824 } else if (sc->sc_enabled) 825 awi_stop(ifp, 1); 826 break; 827 case SIOCSIFMEDIA: 828 case SIOCGIFMEDIA: 829 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 830 break; 831 case SIOCADDMULTI: 832 case SIOCDELMULTI: 833 error = (cmd == SIOCADDMULTI) ? 834 ether_addmulti(ifr, &sc->sc_ic.ic_ec) : 835 ether_delmulti(ifr, &sc->sc_ic.ic_ec); 836 if (error == ENETRESET) { 837 /* do not rescan */ 838 if (sc->sc_enabled) 839 error = awi_mode_init(sc); 840 else 841 error = 0; 842 } 843 break; 844 default: 845 error = ieee80211_ioctl(ifp, cmd, data); 846 if (error == ENETRESET) { 847 if (sc->sc_enabled) 848 error = awi_init(ifp); 849 else 850 error = 0; 851 } 852 break; 853 } 854 awi_unlock(sc); 855 cantlock: 856 splx(s); 857 return error; 858 } 859 860 /* 861 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 862 * 863 * TBD factor with ieee80211_media_change 864 */ 865 static int 866 awi_media_change(struct ifnet *ifp) 867 { 868 struct awi_softc *sc = ifp->if_softc; 869 struct ieee80211com *ic = &sc->sc_ic; 870 struct ifmedia_entry *ime; 871 enum ieee80211_opmode newmode; 872 int i, rate, newadhoc_ap, error = 0; 873 874 ime = ic->ic_media.ifm_cur; 875 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 876 i = -1; 877 } else { 878 struct ieee80211_rateset *rs = 879 &ic->ic_sup_rates[ieee80211_chan2mode(ic, 880 ic->ic_bss->ni_chan)]; 881 rate = ieee80211_media2rate(ime->ifm_media); 882 if (rate == 0) 883 return EINVAL; 884 for (i = 0; i < rs->rs_nrates; i++) { 885 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 886 break; 887 } 888 if (i == rs->rs_nrates) 889 return EINVAL; 890 } 891 if (ic->ic_fixed_rate != i) { 892 ic->ic_fixed_rate = i; 893 error = ENETRESET; 894 } 895 896 /* 897 * combination of mediaopt 898 * 899 * hostap adhoc flag0 opmode adhoc_ap comment 900 * + - - HOSTAP 0 HostAP 901 * - + - IBSS 0 IBSS 902 * - + + AHDEMO 0 WaveLAN adhoc 903 * - - + IBSS 1 Melco old Sta 904 * also LINK0 905 * - - - STA 0 Infra Station 906 */ 907 newadhoc_ap = 0; 908 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 909 newmode = IEEE80211_M_HOSTAP; 910 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 911 if (ic->ic_phytype == IEEE80211_T_DS && 912 (ime->ifm_media & IFM_FLAG0)) 913 newmode = IEEE80211_M_AHDEMO; 914 else 915 newmode = IEEE80211_M_IBSS; 916 } else if (ime->ifm_media & IFM_FLAG0) { 917 newmode = IEEE80211_M_IBSS; 918 newadhoc_ap = 1; 919 } else 920 newmode = IEEE80211_M_STA; 921 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 922 ic->ic_opmode = newmode; 923 sc->sc_adhoc_ap = newadhoc_ap; 924 error = ENETRESET; 925 } 926 927 if (error == ENETRESET) { 928 if (sc->sc_enabled) 929 error = awi_init(ifp); 930 else 931 error = 0; 932 } 933 return error; 934 } 935 936 static void 937 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 938 { 939 struct awi_softc *sc = ifp->if_softc; 940 struct ieee80211com *ic = &sc->sc_ic; 941 int rate; 942 943 imr->ifm_status = IFM_AVALID; 944 if (ic->ic_state == IEEE80211_S_RUN) 945 imr->ifm_status |= IFM_ACTIVE; 946 imr->ifm_active = IFM_IEEE80211; 947 if (ic->ic_state == IEEE80211_S_RUN) { 948 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 949 IEEE80211_RATE_VAL; 950 } else { 951 if (ic->ic_fixed_rate == -1) 952 rate = 0; 953 else 954 rate = ic->ic_sup_rates[ 955 ieee80211_chan2mode(ic, ic->ic_bss->ni_chan)]. 956 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 957 } 958 imr->ifm_active |= ieee80211_rate2media(ic, rate, 959 (ic->ic_phytype == IEEE80211_T_FH) ? IEEE80211_MODE_FH 960 : IEEE80211_MODE_11B); 961 switch (ic->ic_opmode) { 962 case IEEE80211_M_MONITOR: /* we should never reach here */ 963 break; 964 case IEEE80211_M_STA: 965 break; 966 case IEEE80211_M_IBSS: 967 if (sc->sc_adhoc_ap) 968 imr->ifm_active |= IFM_FLAG0; 969 else 970 imr->ifm_active |= IFM_IEEE80211_ADHOC; 971 break; 972 case IEEE80211_M_AHDEMO: 973 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 974 break; 975 case IEEE80211_M_HOSTAP: 976 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 977 break; 978 } 979 } 980 981 static int 982 awi_mode_init(struct awi_softc *sc) 983 { 984 struct ifnet *ifp = &sc->sc_ic.ic_if; 985 int n, error; 986 struct ether_multi *enm; 987 struct ether_multistep step; 988 989 /* reinitialize muticast filter */ 990 n = 0; 991 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 992 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 993 (ifp->if_flags & IFF_PROMISC)) { 994 sc->sc_mib_mac.aPromiscuous_Enable = 1; 995 goto set_mib; 996 } 997 sc->sc_mib_mac.aPromiscuous_Enable = 0; 998 ETHER_FIRST_MULTI(step, &sc->sc_ic.ic_ec, enm); 999 while (enm != NULL) { 1000 if (n == AWI_GROUP_ADDR_SIZE || 1001 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1002 goto set_mib; 1003 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1004 enm->enm_addrlo); 1005 n++; 1006 ETHER_NEXT_MULTI(step, enm); 1007 } 1008 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1009 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1010 IEEE80211_ADDR_LEN); 1011 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1012 1013 set_mib: 1014 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1015 ifp->if_flags &= ~IFF_ALLMULTI; 1016 else 1017 ifp->if_flags |= IFF_ALLMULTI; 1018 sc->sc_mib_mgt.Wep_Required = 1019 (sc->sc_ic.ic_flags & IEEE80211_F_WEPON) ? AWI_WEP_ON : AWI_WEP_OFF; 1020 1021 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1022 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1023 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1024 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1025 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1026 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1027 return error; 1028 } 1029 return 0; 1030 } 1031 1032 static void 1033 awi_rx_int(struct awi_softc *sc) 1034 { 1035 struct ieee80211com *ic = &sc->sc_ic; 1036 struct ifnet *ifp = &ic->ic_if; 1037 struct ieee80211_frame *wh; 1038 struct ieee80211_node *ni; 1039 u_int8_t state, rate, rssi; 1040 u_int16_t len; 1041 u_int32_t frame, next, rstamp, rxoff; 1042 struct mbuf *m; 1043 1044 rxoff = sc->sc_rxdoff; 1045 for (;;) { 1046 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1047 if (state & AWI_RXD_ST_OWN) 1048 break; 1049 if (!(state & AWI_RXD_ST_CONSUMED)) { 1050 if (sc->sc_substate != AWI_ST_NONE) 1051 goto rx_next; 1052 if (state & AWI_RXD_ST_RXERROR) { 1053 ifp->if_ierrors++; 1054 goto rx_next; 1055 } 1056 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1057 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1058 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1059 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1060 0x7fff; 1061 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1062 m = awi_devget(sc, frame, len); 1063 if (m == NULL) { 1064 ifp->if_ierrors++; 1065 goto rx_next; 1066 } 1067 if (state & AWI_RXD_ST_LF) { 1068 /* TODO check my bss */ 1069 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1070 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1071 sc->sc_rx_timer = 10; 1072 ifp->if_timer = 1; 1073 } 1074 if ((ifp->if_flags & IFF_DEBUG) && 1075 (ifp->if_flags & IFF_LINK2)) 1076 ieee80211_dump_pkt(m->m_data, m->m_len, 1077 rate / 5, rssi); 1078 if ((ifp->if_flags & IFF_LINK0) || 1079 sc->sc_adhoc_ap) 1080 m = awi_ether_modcap(sc, m); 1081 else 1082 m = m_pullup(m, sizeof(*wh)); 1083 if (m == NULL) { 1084 ifp->if_ierrors++; 1085 goto rx_next; 1086 } 1087 wh = mtod(m, struct ieee80211_frame *); 1088 if (ic->ic_opmode != IEEE80211_M_STA) { 1089 ni = ieee80211_find_node(ic, 1090 wh->i_addr2); 1091 if (ni == NULL) 1092 ni = ieee80211_ref_node( 1093 ic->ic_bss); 1094 } else 1095 ni = ieee80211_ref_node(ic->ic_bss); 1096 ieee80211_input(ifp, m, ni, rssi, rstamp); 1097 /* 1098 * The frame may have caused the 1099 * node to be marked for reclamation 1100 * (e.g. in response to a DEAUTH 1101 * message) so use free_node here 1102 * instead of unref_node. 1103 */ 1104 if (ni == ic->ic_bss) 1105 ieee80211_unref_node(&ni); 1106 else 1107 ieee80211_free_node(ic, ni); 1108 } else 1109 sc->sc_rxpend = m; 1110 rx_next: 1111 state |= AWI_RXD_ST_CONSUMED; 1112 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1113 } 1114 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1115 if (next & AWI_RXD_NEXT_LAST) 1116 break; 1117 /* make sure the next pointer is correct */ 1118 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1119 break; 1120 state |= AWI_RXD_ST_OWN; 1121 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1122 rxoff = next & 0x7fff; 1123 } 1124 sc->sc_rxdoff = rxoff; 1125 } 1126 1127 static void 1128 awi_tx_int(struct awi_softc *sc) 1129 { 1130 struct ifnet *ifp = &sc->sc_ic.ic_if; 1131 u_int8_t flags; 1132 1133 while (sc->sc_txdone != sc->sc_txnext) { 1134 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1135 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1136 break; 1137 if (flags & AWI_TXD_ST_ERROR) 1138 ifp->if_oerrors++; 1139 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1140 0x7fff; 1141 } 1142 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1143 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1144 sc->sc_tx_timer = 0; 1145 ifp->if_flags &= ~IFF_OACTIVE; 1146 awi_start(ifp); 1147 } 1148 1149 static struct mbuf * 1150 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1151 { 1152 struct ifnet *ifp = &sc->sc_ic.ic_if; 1153 struct mbuf *m; 1154 struct mbuf *top, **mp; 1155 u_int tlen; 1156 1157 top = sc->sc_rxpend; 1158 mp = ⊤ 1159 if (top != NULL) { 1160 sc->sc_rxpend = NULL; 1161 top->m_pkthdr.len += len; 1162 m = top; 1163 while (*mp != NULL) { 1164 m = *mp; 1165 mp = &m->m_next; 1166 } 1167 if (m->m_flags & M_EXT) 1168 tlen = m->m_ext.ext_size; 1169 else if (m->m_flags & M_PKTHDR) 1170 tlen = MHLEN; 1171 else 1172 tlen = MLEN; 1173 tlen -= m->m_len; 1174 if (tlen > len) 1175 tlen = len; 1176 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1177 off += tlen; 1178 len -= tlen; 1179 } 1180 1181 while (len > 0) { 1182 if (top == NULL) { 1183 MGETHDR(m, M_DONTWAIT, MT_DATA); 1184 if (m == NULL) 1185 return NULL; 1186 m->m_pkthdr.rcvif = ifp; 1187 m->m_pkthdr.len = len; 1188 m->m_len = MHLEN; 1189 m->m_flags |= M_HASFCS; 1190 } else { 1191 MGET(m, M_DONTWAIT, MT_DATA); 1192 if (m == NULL) { 1193 m_freem(top); 1194 return NULL; 1195 } 1196 m->m_len = MLEN; 1197 } 1198 if (len >= MINCLSIZE) { 1199 MCLGET(m, M_DONTWAIT); 1200 if (m->m_flags & M_EXT) 1201 m->m_len = m->m_ext.ext_size; 1202 } 1203 if (top == NULL) { 1204 int hdrlen = sizeof(struct ieee80211_frame) + 1205 sizeof(struct llc); 1206 caddr_t newdata = (caddr_t) 1207 ALIGN(m->m_data + hdrlen) - hdrlen; 1208 m->m_len -= newdata - m->m_data; 1209 m->m_data = newdata; 1210 } 1211 if (m->m_len > len) 1212 m->m_len = len; 1213 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1214 off += m->m_len; 1215 len -= m->m_len; 1216 *mp = m; 1217 mp = &m->m_next; 1218 } 1219 return top; 1220 } 1221 1222 /* 1223 * Initialize hardware and start firmware to accept commands. 1224 * Called everytime after power on firmware. 1225 */ 1226 1227 static int 1228 awi_hw_init(struct awi_softc *sc) 1229 { 1230 u_int8_t status; 1231 u_int16_t intmask; 1232 int i, error; 1233 1234 sc->sc_enab_intr = 0; 1235 sc->sc_invalid = 0; /* XXX: really? */ 1236 awi_drvstate(sc, AWI_DRV_RESET); 1237 1238 /* reset firmware */ 1239 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1240 DELAY(100); 1241 awi_write_1(sc, AWI_SELFTEST, 0); 1242 awi_write_1(sc, AWI_CMD, 0); 1243 awi_write_1(sc, AWI_BANNER, 0); 1244 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1245 DELAY(100); 1246 1247 /* wait for selftest completion */ 1248 for (i = 0; ; i++) { 1249 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1250 printf("%s: failed to complete selftest (timeout)\n", 1251 sc->sc_dev.dv_xname); 1252 return ENXIO; 1253 } 1254 status = awi_read_1(sc, AWI_SELFTEST); 1255 if ((status & 0xf0) == 0xf0) 1256 break; 1257 if (sc->sc_cansleep) { 1258 sc->sc_sleep_cnt++; 1259 (void)tsleep(sc, PWAIT, "awitst", 1); 1260 sc->sc_sleep_cnt--; 1261 } else { 1262 DELAY(1000*1000/hz); 1263 } 1264 } 1265 if (status != AWI_SELFTEST_PASSED) { 1266 printf("%s: failed to complete selftest (code %x)\n", 1267 sc->sc_dev.dv_xname, status); 1268 return ENXIO; 1269 } 1270 1271 /* check banner to confirm firmware write it */ 1272 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1273 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1274 printf("%s: failed to complete selftest (bad banner)\n", 1275 sc->sc_dev.dv_xname); 1276 for (i = 0; i < AWI_BANNER_LEN; i++) 1277 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1278 printf("\n"); 1279 return ENXIO; 1280 } 1281 1282 /* initializing interrupt */ 1283 sc->sc_enab_intr = 1; 1284 error = awi_intr_lock(sc); 1285 if (error) 1286 return error; 1287 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1288 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1289 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1290 awi_write_1(sc, AWI_INTMASK2, 0); 1291 awi_write_1(sc, AWI_INTSTAT, 0); 1292 awi_write_1(sc, AWI_INTSTAT2, 0); 1293 awi_intr_unlock(sc); 1294 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1295 1296 /* issuing interface test command */ 1297 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1298 if (error) { 1299 printf("%s: failed to complete selftest", sc->sc_dev.dv_xname); 1300 if (error == ENXIO) 1301 printf(" (no hardware)\n"); 1302 else if (error != EWOULDBLOCK) 1303 printf(" (error %d)\n", error); 1304 else if (sc->sc_cansleep) 1305 printf(" (lost interrupt)\n"); 1306 else 1307 printf(" (command timeout)\n"); 1308 return error; 1309 } 1310 1311 /* Initialize VBM */ 1312 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1313 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1314 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1315 return 0; 1316 } 1317 1318 /* 1319 * Extract the factory default MIB value from firmware and assign the driver 1320 * default value. 1321 * Called once at attaching the interface. 1322 */ 1323 1324 static int 1325 awi_init_mibs(struct awi_softc *sc) 1326 { 1327 int chan, i, error; 1328 struct ieee80211com *ic = &sc->sc_ic; 1329 struct awi_chanset *cs; 1330 1331 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1332 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1333 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1334 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1335 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1336 printf("%s: failed to get default mib value (error %d)\n", 1337 sc->sc_dev.dv_xname, error); 1338 return error; 1339 } 1340 1341 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1342 for (cs = awi_chanset; ; cs++) { 1343 if (cs->cs_type == 0) { 1344 printf("%s: failed to set available channel\n", 1345 sc->sc_dev.dv_xname); 1346 return ENXIO; 1347 } 1348 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1349 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1350 break; 1351 } 1352 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1353 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1354 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1355 setbit(sc->sc_ic.ic_chan_avail, chan); 1356 /* XXX for FHSS, does frequency matter? */ 1357 ic->ic_channels[chan].ic_freq = 0; 1358 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1359 /* 1360 * According to the IEEE 802.11 specification, 1361 * hop pattern parameter for FH phy should be 1362 * incremented by 3 for given hop chanset, i.e., 1363 * the chanset parameter is calculated for given 1364 * hop patter. However, BayStack 650 Access Points 1365 * apparently use fixed hop chanset parameter value 1366 * 1 for any hop pattern. So we also try this 1367 * combination of hop chanset and pattern. 1368 */ 1369 chan = IEEE80211_FH_CHAN(1, i); 1370 setbit(sc->sc_ic.ic_chan_avail, chan); 1371 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1372 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1373 } 1374 } else { 1375 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1376 setbit(sc->sc_ic.ic_chan_avail, i); 1377 ic->ic_channels[i].ic_freq = 1378 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1379 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1380 } 1381 } 1382 sc->sc_cur_chan = cs->cs_def; 1383 1384 sc->sc_mib_local.Fragmentation_Dis = 1; 1385 sc->sc_mib_local.Add_PLCP_Dis = 0; 1386 sc->sc_mib_local.MAC_Hdr_Prsv = 1; 1387 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1388 sc->sc_mib_local.Re_Assembly_Dis = 1; 1389 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1390 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1391 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1392 sc->sc_mib_local.Check_Seq_Cntl_Dis = 1; 1393 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1394 sc->sc_mib_local.Network_Mode = 1; 1395 sc->sc_mib_local.PWD_Lvl = 0; 1396 sc->sc_mib_local.CFP_Mode = 0; 1397 1398 /* allocate buffers */ 1399 sc->sc_txbase = AWI_BUFFERS; 1400 sc->sc_txend = sc->sc_txbase + 1401 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1402 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1403 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1404 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1405 sc->sc_txend - sc->sc_txbase); 1406 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1407 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1408 AWI_BUFFERS_END - sc->sc_txend); 1409 sc->sc_mib_local.Acting_as_AP = 0; 1410 sc->sc_mib_local.Fill_CFP = 0; 1411 1412 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1413 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1414 1415 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1416 sc->sc_mib_mgt.aDTIM_Period = 1; 1417 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1418 return 0; 1419 } 1420 1421 static int 1422 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1423 { 1424 int error; 1425 u_int8_t size, *ptr; 1426 1427 switch (mib) { 1428 case AWI_MIB_LOCAL: 1429 ptr = (u_int8_t *)&sc->sc_mib_local; 1430 size = sizeof(sc->sc_mib_local); 1431 break; 1432 case AWI_MIB_ADDR: 1433 ptr = (u_int8_t *)&sc->sc_mib_addr; 1434 size = sizeof(sc->sc_mib_addr); 1435 break; 1436 case AWI_MIB_MAC: 1437 ptr = (u_int8_t *)&sc->sc_mib_mac; 1438 size = sizeof(sc->sc_mib_mac); 1439 break; 1440 case AWI_MIB_STAT: 1441 ptr = (u_int8_t *)&sc->sc_mib_stat; 1442 size = sizeof(sc->sc_mib_stat); 1443 break; 1444 case AWI_MIB_MGT: 1445 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1446 size = sizeof(sc->sc_mib_mgt); 1447 break; 1448 case AWI_MIB_PHY: 1449 ptr = (u_int8_t *)&sc->sc_mib_phy; 1450 size = sizeof(sc->sc_mib_phy); 1451 break; 1452 default: 1453 return EINVAL; 1454 } 1455 if (sc->sc_cmd_inprog) { 1456 if ((error = awi_cmd_wait(sc)) != 0) { 1457 if (error == EWOULDBLOCK) 1458 DPRINTF(("awi_mib: cmd %d inprog", 1459 sc->sc_cmd_inprog)); 1460 return error; 1461 } 1462 } 1463 sc->sc_cmd_inprog = cmd; 1464 if (cmd == AWI_CMD_SET_MIB) 1465 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1466 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1467 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1468 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1469 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1470 return error; 1471 if (cmd == AWI_CMD_GET_MIB) { 1472 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1473 #ifdef AWI_DEBUG 1474 if (awi_debug) { 1475 int i; 1476 1477 printf("awi_mib: #%d:", mib); 1478 for (i = 0; i < size; i++) 1479 printf(" %02x", ptr[i]); 1480 printf("\n"); 1481 } 1482 #endif 1483 } 1484 return 0; 1485 } 1486 1487 static int 1488 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1489 { 1490 u_int8_t status; 1491 int error = 0; 1492 #ifdef AWI_DEBUG 1493 static const char *cmdname[] = { 1494 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1495 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1496 }; 1497 #endif 1498 1499 #ifdef AWI_DEBUG 1500 if (awi_debug > 1) { 1501 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1502 printf("awi_cmd: #%d", cmd); 1503 else 1504 printf("awi_cmd: %s", cmdname[cmd]); 1505 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1506 } 1507 #endif 1508 sc->sc_cmd_inprog = cmd; 1509 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1510 awi_write_1(sc, AWI_CMD, cmd); 1511 if (wflag == AWI_NOWAIT) 1512 return EINPROGRESS; 1513 if ((error = awi_cmd_wait(sc)) != 0) 1514 return error; 1515 status = awi_read_1(sc, AWI_CMD_STATUS); 1516 awi_write_1(sc, AWI_CMD, 0); 1517 switch (status) { 1518 case AWI_STAT_OK: 1519 break; 1520 case AWI_STAT_BADPARM: 1521 return EINVAL; 1522 default: 1523 printf("%s: command %d failed %x\n", 1524 sc->sc_dev.dv_xname, cmd, status); 1525 return ENXIO; 1526 } 1527 return 0; 1528 } 1529 1530 static int 1531 awi_cmd_wait(struct awi_softc *sc) 1532 { 1533 int i, error = 0; 1534 1535 i = 0; 1536 while (sc->sc_cmd_inprog) { 1537 if (sc->sc_invalid) 1538 return ENXIO; 1539 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1540 printf("%s: failed to access hardware\n", 1541 sc->sc_dev.dv_xname); 1542 sc->sc_invalid = 1; 1543 return ENXIO; 1544 } 1545 if (sc->sc_cansleep) { 1546 sc->sc_sleep_cnt++; 1547 error = tsleep(sc, PWAIT, "awicmd", 1548 AWI_CMD_TIMEOUT*hz/1000); 1549 sc->sc_sleep_cnt--; 1550 } else { 1551 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1552 awi_cmd_done(sc); 1553 break; 1554 } 1555 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1556 error = EWOULDBLOCK; 1557 else 1558 DELAY(10); 1559 } 1560 if (error) 1561 break; 1562 } 1563 if (error) { 1564 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1565 sc->sc_cmd_inprog, error)); 1566 } 1567 return error; 1568 } 1569 1570 static void 1571 awi_cmd_done(struct awi_softc *sc) 1572 { 1573 u_int8_t cmd, status; 1574 1575 status = awi_read_1(sc, AWI_CMD_STATUS); 1576 if (status == AWI_STAT_IDLE) 1577 return; /* stray interrupt */ 1578 1579 cmd = sc->sc_cmd_inprog; 1580 sc->sc_cmd_inprog = 0; 1581 wakeup(sc); 1582 awi_write_1(sc, AWI_CMD, 0); 1583 1584 if (status != AWI_STAT_OK) { 1585 printf("%s: command %d failed %x\n", 1586 sc->sc_dev.dv_xname, cmd, status); 1587 sc->sc_substate = AWI_ST_NONE; 1588 return; 1589 } 1590 if (sc->sc_substate != AWI_ST_NONE) 1591 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1592 } 1593 1594 static int 1595 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1596 { 1597 u_int32_t txd, ntxd, frame; 1598 1599 txd = sc->sc_txnext; 1600 frame = txd + AWI_TXD_SIZE; 1601 if (frame + len > sc->sc_txend) 1602 frame = sc->sc_txbase; 1603 ntxd = frame + len; 1604 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1605 ntxd = sc->sc_txbase; 1606 *framep = frame; 1607 *ntxdp = ntxd; 1608 /* 1609 * Determine if there are any room in ring buffer. 1610 * --- send wait, === new data, +++ conflict (ENOBUFS) 1611 * base........................end 1612 * done----txd=====ntxd OK 1613 * --txd=====done++++ntxd-- full 1614 * --txd=====ntxd done-- OK 1615 * ==ntxd done----txd=== OK 1616 * ==done++++ntxd----txd=== full 1617 * ++ntxd txd=====done++ full 1618 */ 1619 if (txd < ntxd) { 1620 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1621 return ENOBUFS; 1622 } else { 1623 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1624 return ENOBUFS; 1625 } 1626 return 0; 1627 } 1628 1629 static int 1630 awi_lock(struct awi_softc *sc) 1631 { 1632 int error = 0; 1633 1634 if (curlwp == NULL) { 1635 /* 1636 * XXX 1637 * Though driver ioctl should be called with context, 1638 * KAME ipv6 stack calls ioctl in interrupt for now. 1639 * We simply abort the request if there are other 1640 * ioctl requests in progress. 1641 */ 1642 if (sc->sc_busy) { 1643 return EWOULDBLOCK; 1644 if (sc->sc_invalid) 1645 return ENXIO; 1646 } 1647 sc->sc_busy = 1; 1648 sc->sc_cansleep = 0; 1649 return 0; 1650 } 1651 while (sc->sc_busy) { 1652 if (sc->sc_invalid) 1653 return ENXIO; 1654 sc->sc_sleep_cnt++; 1655 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1656 sc->sc_sleep_cnt--; 1657 if (error) 1658 return error; 1659 } 1660 sc->sc_busy = 1; 1661 sc->sc_cansleep = 1; 1662 return 0; 1663 } 1664 1665 static void 1666 awi_unlock(struct awi_softc *sc) 1667 { 1668 sc->sc_busy = 0; 1669 sc->sc_cansleep = 0; 1670 if (sc->sc_sleep_cnt) 1671 wakeup(sc); 1672 } 1673 1674 static int 1675 awi_intr_lock(struct awi_softc *sc) 1676 { 1677 u_int8_t status; 1678 int i, retry; 1679 1680 status = 1; 1681 for (retry = 0; retry < 10; retry++) { 1682 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1683 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1684 break; 1685 DELAY(5); 1686 } 1687 if (status != 0) 1688 break; 1689 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1690 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1691 break; 1692 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1693 } 1694 if (status != 0) { 1695 printf("%s: failed to lock interrupt\n", 1696 sc->sc_dev.dv_xname); 1697 return ENXIO; 1698 } 1699 return 0; 1700 } 1701 1702 static void 1703 awi_intr_unlock(struct awi_softc *sc) 1704 { 1705 1706 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1707 } 1708 1709 static int 1710 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1711 { 1712 struct awi_softc *sc = ic->ic_softc; 1713 struct ieee80211_node *ni; 1714 struct ifnet *ifp = &ic->ic_if; 1715 int error; 1716 u_int8_t newmode; 1717 enum ieee80211_state ostate; 1718 #ifdef AWI_DEBUG 1719 static const char *stname[] = 1720 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1721 static const char *substname[] = 1722 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1723 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1724 #endif /* AWI_DEBUG */ 1725 1726 ostate = ic->ic_state; 1727 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1728 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1729 1730 /* set LED */ 1731 switch (nstate) { 1732 case IEEE80211_S_INIT: 1733 awi_drvstate(sc, AWI_DRV_RESET); 1734 break; 1735 case IEEE80211_S_SCAN: 1736 if (ic->ic_opmode == IEEE80211_M_IBSS || 1737 ic->ic_opmode == IEEE80211_M_AHDEMO) 1738 awi_drvstate(sc, AWI_DRV_ADHSC); 1739 else 1740 awi_drvstate(sc, AWI_DRV_INFSY); 1741 break; 1742 case IEEE80211_S_AUTH: 1743 awi_drvstate(sc, AWI_DRV_INFSY); 1744 break; 1745 case IEEE80211_S_ASSOC: 1746 awi_drvstate(sc, AWI_DRV_INFAUTH); 1747 break; 1748 case IEEE80211_S_RUN: 1749 if (ic->ic_opmode == IEEE80211_M_IBSS || 1750 ic->ic_opmode == IEEE80211_M_AHDEMO) 1751 awi_drvstate(sc, AWI_DRV_ADHSY); 1752 else 1753 awi_drvstate(sc, AWI_DRV_INFASSOC); 1754 break; 1755 } 1756 1757 if (nstate == IEEE80211_S_INIT) { 1758 sc->sc_substate = AWI_ST_NONE; 1759 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1760 return (*sc->sc_newstate)(ic, nstate, arg); 1761 } 1762 1763 /* state transition */ 1764 if (nstate == IEEE80211_S_SCAN) { 1765 /* SCAN substate */ 1766 if (sc->sc_substate == AWI_ST_NONE) { 1767 sc->sc_nstate = nstate; /* next state in transition */ 1768 sc->sc_substate = AWI_ST_SCAN_INIT; 1769 } 1770 switch (sc->sc_substate) { 1771 case AWI_ST_SCAN_INIT: 1772 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1773 switch (ostate) { 1774 case IEEE80211_S_RUN: 1775 /* beacon miss */ 1776 if (ifp->if_flags & IFF_DEBUG) 1777 printf("%s: no recent beacons from %s;" 1778 " rescanning\n", 1779 ifp->if_xname, 1780 ether_sprintf(ic->ic_bss->ni_bssid)); 1781 /* FALLTHRU */ 1782 case IEEE80211_S_AUTH: 1783 case IEEE80211_S_ASSOC: 1784 /* timeout restart scan */ 1785 ieee80211_free_allnodes(ic); 1786 /* FALLTHRU */ 1787 case IEEE80211_S_INIT: 1788 ic->ic_flags |= IEEE80211_F_ASCAN; 1789 /* FALLTHRU */ 1790 case IEEE80211_S_SCAN: 1791 /* scan next */ 1792 break; 1793 } 1794 if (ic->ic_flags & IEEE80211_F_ASCAN) 1795 newmode = AWI_SCAN_ACTIVE; 1796 else 1797 newmode = AWI_SCAN_PASSIVE; 1798 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1799 sc->sc_mib_mgt.aScan_Mode = newmode; 1800 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1801 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1802 break; 1803 } 1804 /* FALLTHRU */ 1805 case AWI_ST_SCAN_SETMIB: 1806 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1807 if (sc->sc_cmd_inprog) { 1808 if ((error = awi_cmd_wait(sc)) != 0) 1809 break; 1810 } 1811 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1812 ni = ic->ic_bss; 1813 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1814 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1815 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1816 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1817 awi_write_1(sc, AWI_CA_SCAN_SET, 1818 IEEE80211_FH_CHANSET( 1819 ieee80211_chan2ieee(ic, ni->ni_chan))); 1820 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1821 IEEE80211_FH_CHANPAT( 1822 ieee80211_chan2ieee(ic, ni->ni_chan))); 1823 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1824 } else { 1825 awi_write_1(sc, AWI_CA_SCAN_SET, 1826 ieee80211_chan2ieee(ic, ni->ni_chan)); 1827 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1828 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1829 } 1830 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1831 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1832 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1833 != 0) 1834 break; 1835 /* FALLTHRU */ 1836 case AWI_ST_SCAN_SCCMD: 1837 ic->ic_state = nstate; 1838 sc->sc_substate = AWI_ST_NONE; 1839 error = EINPROGRESS; 1840 break; 1841 default: 1842 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1843 stname[nstate], substname[sc->sc_substate])); 1844 sc->sc_substate = AWI_ST_NONE; 1845 error = EIO; 1846 break; 1847 } 1848 goto out; 1849 } 1850 1851 if (ostate == IEEE80211_S_SCAN) { 1852 /* set SSID and channel */ 1853 /* substate */ 1854 if (sc->sc_substate == AWI_ST_NONE) { 1855 sc->sc_nstate = nstate; /* next state in transition */ 1856 sc->sc_substate = AWI_ST_SUB_INIT; 1857 } 1858 ni = ic->ic_bss; 1859 switch (sc->sc_substate) { 1860 case AWI_ST_SUB_INIT: 1861 sc->sc_substate = AWI_ST_SUB_SETSS; 1862 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1863 ni->ni_bssid); 1864 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1865 AWI_ESS_ID_SIZE); 1866 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1867 IEEE80211_ELEMID_SSID; 1868 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1869 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1870 ni->ni_essid, ni->ni_esslen); 1871 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1872 ni->ni_intval); 1873 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1874 AWI_NOWAIT)) != 0) 1875 break; 1876 /* FALLTHRU */ 1877 case AWI_ST_SUB_SETSS: 1878 sc->sc_substate = AWI_ST_SUB_SYNC; 1879 if (sc->sc_cmd_inprog) { 1880 if ((error = awi_cmd_wait(sc)) != 0) 1881 break; 1882 } 1883 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1884 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1885 awi_write_1(sc, AWI_CA_SYNC_SET, 1886 IEEE80211_FH_CHANSET( 1887 ieee80211_chan2ieee(ic, ni->ni_chan))); 1888 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1889 IEEE80211_FH_CHANPAT( 1890 ieee80211_chan2ieee(ic, ni->ni_chan))); 1891 awi_write_1(sc, AWI_CA_SYNC_IDX, 1892 ni->ni_fhindex); 1893 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1894 ni->ni_fhdwell); 1895 } else { 1896 awi_write_1(sc, AWI_CA_SYNC_SET, 1897 ieee80211_chan2ieee(ic, ni->ni_chan)); 1898 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1899 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1900 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1901 } 1902 if (ic->ic_flags & IEEE80211_F_SIBSS) 1903 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1904 else 1905 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1906 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1907 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1908 ni->ni_tstamp, 8); 1909 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1910 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1911 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1912 != 0) 1913 break; 1914 /* FALLTHRU */ 1915 case AWI_ST_SUB_SYNC: 1916 sc->sc_substate = AWI_ST_NONE; 1917 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1918 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1919 AWI_MIB_MGT, AWI_WAIT)) != 0) 1920 break; 1921 IEEE80211_ADDR_COPY(ni->ni_bssid, 1922 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1923 } else { 1924 if (nstate == IEEE80211_S_RUN) { 1925 sc->sc_rx_timer = 10; 1926 ifp->if_timer = 1; 1927 } 1928 } 1929 error = 0; 1930 break; 1931 default: 1932 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1933 stname[nstate], substname[sc->sc_substate])); 1934 sc->sc_substate = AWI_ST_NONE; 1935 error = EIO; 1936 break; 1937 } 1938 goto out; 1939 } 1940 1941 sc->sc_substate = AWI_ST_NONE; 1942 1943 return (*sc->sc_newstate)(ic, nstate, arg); 1944 out: 1945 if (error != 0) 1946 return error; 1947 return (*sc->sc_newstate)(ic, nstate, arg); 1948 } 1949 1950 static void 1951 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1952 struct ieee80211_node *ni, 1953 int subtype, int rssi, u_int32_t rstamp) 1954 { 1955 struct awi_softc *sc = ic->ic_softc; 1956 1957 /* probe request is handled by hardware */ 1958 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1959 return; 1960 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1961 } 1962 1963 static int 1964 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 1965 int type, int arg) 1966 { 1967 struct awi_softc *sc = ic->ic_softc; 1968 1969 /* probe request is handled by hardware */ 1970 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1971 return 0; 1972 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 1973 } 1974 1975 static struct mbuf * 1976 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 1977 { 1978 struct ieee80211com *ic = &sc->sc_ic; 1979 struct ieee80211_node *ni = ic->ic_bss; 1980 struct ether_header *eh; 1981 struct ieee80211_frame *wh; 1982 1983 if (m->m_len < sizeof(struct ether_header)) { 1984 m = m_pullup(m, sizeof(struct ether_header)); 1985 if (m == NULL) 1986 return NULL; 1987 } 1988 eh = mtod(m, struct ether_header *); 1989 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 1990 if (m == NULL) 1991 return NULL; 1992 wh = mtod(m, struct ieee80211_frame *); 1993 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 1994 *(u_int16_t *)wh->i_dur = 0; 1995 *(u_int16_t *)wh->i_seq = 1996 htole16(ni->ni_txseq << IEEE80211_SEQ_SEQ_SHIFT); 1997 ni->ni_txseq++; 1998 if (ic->ic_opmode == IEEE80211_M_IBSS || 1999 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2000 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2001 if (sc->sc_adhoc_ap) 2002 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2003 else 2004 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2005 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2006 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2007 } else { 2008 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2009 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2010 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2011 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2012 } 2013 return m; 2014 } 2015 2016 static struct mbuf * 2017 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2018 { 2019 struct ieee80211com *ic = &sc->sc_ic; 2020 struct ether_header eh; 2021 struct ieee80211_frame wh; 2022 struct llc *llc; 2023 2024 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2025 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2026 if (m == NULL) 2027 return NULL; 2028 } 2029 memcpy(&wh, mtod(m, caddr_t), sizeof(wh)); 2030 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2031 return m; 2032 memcpy(&eh, mtod(m, caddr_t) + sizeof(wh), sizeof(eh)); 2033 m_adj(m, sizeof(eh) - sizeof(*llc)); 2034 if (ic->ic_opmode == IEEE80211_M_IBSS || 2035 ic->ic_opmode == IEEE80211_M_AHDEMO) 2036 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2037 memcpy(mtod(m, caddr_t), &wh, sizeof(wh)); 2038 llc = (struct llc *)(mtod(m, caddr_t) + sizeof(wh)); 2039 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2040 llc->llc_control = LLC_UI; 2041 llc->llc_snap.org_code[0] = 0; 2042 llc->llc_snap.org_code[1] = 0; 2043 llc->llc_snap.org_code[2] = 0; 2044 llc->llc_snap.ether_type = eh.ether_type; 2045 return m; 2046 } 2047
Indexes created Sun Oct 19 02:09:48 GMT 2025