awi.c revision 1.84
1 /* $NetBSD: awi.c,v 1.84 2009/09/15 18:37:02 dyoung Exp $ */ 2 3 /*- 4 * Copyright (c) 1999,2000,2001 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bill Sommerfeld 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /* 32 * Driver for AMD 802.11 firmware. 33 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 34 * 35 * More-or-less a generic ethernet-like if driver, with 802.11 gorp added. 36 */ 37 38 /* 39 * todo: 40 * - flush tx queue on resynch. 41 * - clear oactive on "down". 42 * - rewrite copy-into-mbuf code 43 * - mgmt state machine gets stuck retransmitting assoc requests. 44 * - multicast filter. 45 * - fix device reset so it's more likely to work 46 * - show status goo through ifmedia. 47 * 48 * more todo: 49 * - deal with more 802.11 frames. 50 * - send reassoc request 51 * - deal with reassoc response 52 * - send/deal with disassociation 53 * - deal with "full" access points (no room for me). 54 * - power save mode 55 * 56 * later: 57 * - SSID preferences 58 * - need ioctls for poking at the MIBs 59 * - implement ad-hoc mode (including bss creation). 60 * - decide when to do "ad hoc" vs. infrastructure mode (IFF_LINK flags?) 61 * (focus on inf. mode since that will be needed for ietf) 62 * - deal with DH vs. FH versions of the card 63 * - deal with faster cards (2mb/s) 64 * - ?WEP goo (mmm, rc4) (it looks not particularly useful). 65 * - ifmedia revision. 66 * - common 802.11 mibish things. 67 * - common 802.11 media layer. 68 */ 69 70 /* 71 * Driver for AMD 802.11 PCnetMobile firmware. 72 * Uses am79c930 chip driver to talk to firmware running on the am79c930. 73 * 74 * The initial version of the driver was written by 75 * Bill Sommerfeld <sommerfeld (at) NetBSD.org>. 76 * Then the driver module completely rewritten to support cards with DS phy 77 * and to support adhoc mode by Atsushi Onoe <onoe (at) NetBSD.org> 78 */ 79 80 #include <sys/cdefs.h> 81 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.84 2009/09/15 18:37:02 dyoung Exp $"); 82 83 #include "opt_inet.h" 84 #include "bpfilter.h" 85 86 #include <sys/param.h> 87 #include <sys/systm.h> 88 #include <sys/kernel.h> 89 #include <sys/mbuf.h> 90 #include <sys/malloc.h> 91 #include <sys/proc.h> 92 #include <sys/socket.h> 93 #include <sys/sockio.h> 94 #include <sys/errno.h> 95 #include <sys/endian.h> 96 #include <sys/device.h> 97 98 #include <net/if.h> 99 #include <net/if_dl.h> 100 #include <net/if_ether.h> 101 #include <net/if_media.h> 102 #include <net/if_llc.h> 103 104 #include <net80211/ieee80211_netbsd.h> 105 #include <net80211/ieee80211_var.h> 106 107 #if NBPFILTER > 0 108 #include <net/bpf.h> 109 #endif 110 111 #include <sys/cpu.h> 112 #include <sys/bus.h> 113 114 #include <dev/ic/am79c930reg.h> 115 #include <dev/ic/am79c930var.h> 116 #include <dev/ic/awireg.h> 117 #include <dev/ic/awivar.h> 118 119 static int awi_init(struct ifnet *); 120 static void awi_stop(struct ifnet *, int); 121 static void awi_start(struct ifnet *); 122 static void awi_watchdog(struct ifnet *); 123 static int awi_ioctl(struct ifnet *, u_long, void *); 124 static int awi_media_change(struct ifnet *); 125 static void awi_media_status(struct ifnet *, struct ifmediareq *); 126 static int awi_mode_init(struct awi_softc *); 127 static void awi_rx_int(struct awi_softc *); 128 static void awi_tx_int(struct awi_softc *); 129 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 130 static int awi_hw_init(struct awi_softc *); 131 static int awi_init_mibs(struct awi_softc *); 132 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 133 static int awi_cmd(struct awi_softc *, u_int8_t, int); 134 static int awi_cmd_wait(struct awi_softc *); 135 static void awi_cmd_done(struct awi_softc *); 136 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 137 static int awi_lock(struct awi_softc *); 138 static void awi_unlock(struct awi_softc *); 139 static int awi_intr_lock(struct awi_softc *); 140 static void awi_intr_unlock(struct awi_softc *); 141 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 142 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 143 struct ieee80211_node *, int, int, u_int32_t); 144 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 145 int); 146 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 147 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 148 149 /* unaligned little endian access */ 150 #define LE_READ_2(p) \ 151 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 152 #define LE_READ_4(p) \ 153 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 154 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 155 #define LE_WRITE_2(p, v) \ 156 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 157 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 158 #define LE_WRITE_4(p, v) \ 159 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 160 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 161 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 162 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 163 164 struct awi_chanset awi_chanset[] = { 165 /* PHY type domain min max def */ 166 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 167 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 168 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 169 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 170 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 171 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 172 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 173 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 174 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 175 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 176 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 177 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 178 { 0, 0, 0, 0, 0 } 179 }; 180 181 #ifdef AWI_DEBUG 182 int awi_debug = 0; 183 184 #define DPRINTF(X) if (awi_debug) printf X 185 #define DPRINTF2(X) if (awi_debug > 1) printf X 186 #else 187 #define DPRINTF(X) 188 #define DPRINTF2(X) 189 #endif 190 191 int 192 awi_attach(struct awi_softc *sc) 193 { 194 struct ieee80211com *ic = &sc->sc_ic; 195 struct ifnet *ifp = &sc->sc_if; 196 int s, i, error, nrate; 197 int mword; 198 enum ieee80211_phymode mode; 199 200 s = splnet(); 201 sc->sc_busy = 1; 202 sc->sc_attached = 0; 203 sc->sc_substate = AWI_ST_NONE; 204 if ((error = awi_hw_init(sc)) != 0) { 205 sc->sc_invalid = 1; 206 splx(s); 207 return error; 208 } 209 error = awi_init_mibs(sc); 210 if (error != 0) { 211 sc->sc_invalid = 1; 212 splx(s); 213 return error; 214 } 215 ifp->if_softc = sc; 216 ifp->if_flags = 217 #ifdef IFF_NOTRAILERS 218 IFF_NOTRAILERS | 219 #endif 220 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 221 ifp->if_ioctl = awi_ioctl; 222 ifp->if_start = awi_start; 223 ifp->if_watchdog = awi_watchdog; 224 ifp->if_init = awi_init; 225 ifp->if_stop = awi_stop; 226 IFQ_SET_READY(&ifp->if_snd); 227 memcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 228 229 ic->ic_ifp = ifp; 230 ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP; 231 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 232 ic->ic_phytype = IEEE80211_T_FH; 233 mode = IEEE80211_MODE_FH; 234 } else { 235 ic->ic_phytype = IEEE80211_T_DS; 236 ic->ic_caps |= IEEE80211_C_AHDEMO; 237 mode = IEEE80211_MODE_11B; 238 } 239 ic->ic_opmode = IEEE80211_M_STA; 240 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 241 memcpy(ic->ic_sup_rates[mode].rs_rates, 242 sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 243 ic->ic_sup_rates[mode].rs_nrates = nrate; 244 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 245 246 printf("%s: IEEE802.11 %s (firmware %s)\n", ifp->if_xname, 247 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 248 printf("%s: 802.11 address: %s\n", ifp->if_xname, 249 ether_sprintf(ic->ic_myaddr)); 250 251 if_attach(ifp); 252 ieee80211_ifattach(ic); 253 254 sc->sc_newstate = ic->ic_newstate; 255 ic->ic_newstate = awi_newstate; 256 257 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 258 ic->ic_recv_mgmt = awi_recv_mgmt; 259 260 sc->sc_send_mgmt = ic->ic_send_mgmt; 261 ic->ic_send_mgmt = awi_send_mgmt; 262 263 ieee80211_media_init(ic, awi_media_change, awi_media_status); 264 265 /* Melco compatibility mode. */ 266 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 267 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 268 ADD(IFM_AUTO, IFM_FLAG0); 269 270 for (i = 0; i < nrate; i++) { 271 mword = ieee80211_rate2media(ic, 272 ic->ic_sup_rates[mode].rs_rates[i], mode); 273 if (mword == 0) 274 continue; 275 ADD(mword, IFM_FLAG0); 276 } 277 #undef ADD 278 279 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 280 printf("%s: WARNING: unable to establish shutdown hook\n", 281 ifp->if_xname); 282 if ((sc->sc_powerhook = 283 powerhook_establish(ifp->if_xname, awi_power, sc)) == NULL) 284 printf("%s: WARNING: unable to establish power hook\n", 285 ifp->if_xname); 286 sc->sc_attached = 1; 287 splx(s); 288 289 /* ready to accept ioctl */ 290 awi_unlock(sc); 291 292 return 0; 293 } 294 295 int 296 awi_detach(struct awi_softc *sc) 297 { 298 struct ieee80211com *ic = &sc->sc_ic; 299 struct ifnet *ifp = &sc->sc_if; 300 int s; 301 302 if (!sc->sc_attached) 303 return 0; 304 305 s = splnet(); 306 sc->sc_invalid = 1; 307 awi_stop(ifp, 1); 308 309 while (sc->sc_sleep_cnt > 0) { 310 wakeup(sc); 311 (void)tsleep(sc, PWAIT, "awidet", 1); 312 } 313 sc->sc_attached = 0; 314 ieee80211_ifdetach(ic); 315 if_detach(ifp); 316 shutdownhook_disestablish(sc->sc_sdhook); 317 powerhook_disestablish(sc->sc_powerhook); 318 splx(s); 319 return 0; 320 } 321 322 int 323 awi_activate(device_t self, enum devact act) 324 { 325 struct awi_softc *sc = device_private(self); 326 struct ifnet *ifp = &sc->sc_if; 327 int s, error = 0; 328 329 s = splnet(); 330 switch (act) { 331 case DVACT_ACTIVATE: 332 error = EOPNOTSUPP; 333 break; 334 case DVACT_DEACTIVATE: 335 sc->sc_invalid = 1; 336 if_deactivate(ifp); 337 break; 338 } 339 splx(s); 340 return error; 341 } 342 343 void 344 awi_power(int why, void *arg) 345 { 346 struct awi_softc *sc = arg; 347 struct ifnet *ifp = &sc->sc_if; 348 int s; 349 int ocansleep; 350 351 DPRINTF(("awi_power: %d\n", why)); 352 s = splnet(); 353 ocansleep = sc->sc_cansleep; 354 sc->sc_cansleep = 0; 355 switch (why) { 356 case PWR_SUSPEND: 357 case PWR_STANDBY: 358 awi_stop(ifp, 1); 359 break; 360 case PWR_RESUME: 361 if (ifp->if_flags & IFF_UP) { 362 awi_init(ifp); 363 (void)awi_intr(sc); /* make sure */ 364 } 365 break; 366 case PWR_SOFTSUSPEND: 367 case PWR_SOFTSTANDBY: 368 case PWR_SOFTRESUME: 369 break; 370 } 371 sc->sc_cansleep = ocansleep; 372 splx(s); 373 } 374 375 void 376 awi_shutdown(void *arg) 377 { 378 struct awi_softc *sc = arg; 379 struct ifnet *ifp = &sc->sc_if; 380 381 if (sc->sc_attached) 382 awi_stop(ifp, 1); 383 } 384 385 int 386 awi_intr(void *arg) 387 { 388 struct awi_softc *sc = arg; 389 u_int16_t status; 390 int handled = 0, ocansleep; 391 #ifdef AWI_DEBUG 392 static const char *intname[] = { 393 "CMD", "RX", "TX", "SCAN_CMPLT", 394 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 395 "TXDATA", "TXBCAST", "TXPS", "TXCF", 396 "TXMGT", "#13", "RXDATA", "RXMGT" 397 }; 398 #endif 399 400 if (!sc->sc_enabled || !sc->sc_enab_intr || sc->sc_invalid) { 401 DPRINTF(("awi_intr: stray interrupt: " 402 "enabled %d enab_intr %d invalid %d\n", 403 sc->sc_enabled, sc->sc_enab_intr, sc->sc_invalid)); 404 return 0; 405 } 406 407 am79c930_gcr_setbits(&sc->sc_chip, 408 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 409 awi_write_1(sc, AWI_DIS_PWRDN, 1); 410 ocansleep = sc->sc_cansleep; 411 sc->sc_cansleep = 0; 412 413 for (;;) { 414 if (awi_intr_lock(sc) != 0) 415 break; 416 status = awi_read_1(sc, AWI_INTSTAT); 417 awi_write_1(sc, AWI_INTSTAT, 0); 418 awi_write_1(sc, AWI_INTSTAT, 0); 419 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 420 awi_write_1(sc, AWI_INTSTAT2, 0); 421 DELAY(10); 422 awi_intr_unlock(sc); 423 if (!sc->sc_cmd_inprog) 424 status &= ~AWI_INT_CMD; /* make sure */ 425 if (status == 0) 426 break; 427 #ifdef AWI_DEBUG 428 if (awi_debug > 1) { 429 int i; 430 431 printf("awi_intr: status 0x%04x", status); 432 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 433 i++) { 434 if (status & (1 << i)) 435 printf(" %s", intname[i]); 436 } 437 printf("\n"); 438 } 439 #endif 440 handled = 1; 441 if (status & AWI_INT_RX) 442 awi_rx_int(sc); 443 if (status & AWI_INT_TX) 444 awi_tx_int(sc); 445 if (status & AWI_INT_CMD) 446 awi_cmd_done(sc); 447 if (status & AWI_INT_SCAN_CMPLT) { 448 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 449 sc->sc_substate == AWI_ST_NONE) 450 ieee80211_next_scan(&sc->sc_ic); 451 } 452 } 453 sc->sc_cansleep = ocansleep; 454 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 455 awi_write_1(sc, AWI_DIS_PWRDN, 0); 456 return handled; 457 } 458 459 460 static int 461 awi_init(struct ifnet *ifp) 462 { 463 struct awi_softc *sc = ifp->if_softc; 464 struct ieee80211com *ic = &sc->sc_ic; 465 struct ieee80211_node *ni = ic->ic_bss; 466 struct ieee80211_rateset *rs; 467 int error, rate, i; 468 469 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 470 if (sc->sc_enabled) { 471 awi_stop(ifp, 0); 472 } else { 473 if (sc->sc_enable) 474 (*sc->sc_enable)(sc); 475 sc->sc_enabled = 1; 476 if ((error = awi_hw_init(sc)) != 0) { 477 if (sc->sc_disable) 478 (*sc->sc_disable)(sc); 479 sc->sc_enabled = 0; 480 return error; 481 } 482 } 483 ic->ic_state = IEEE80211_S_INIT; 484 485 ic->ic_flags &= ~IEEE80211_F_IBSSON; 486 switch (ic->ic_opmode) { 487 case IEEE80211_M_STA: 488 sc->sc_mib_local.Network_Mode = 1; 489 sc->sc_mib_local.Acting_as_AP = 0; 490 break; 491 case IEEE80211_M_IBSS: 492 ic->ic_flags |= IEEE80211_F_IBSSON; 493 /* FALLTHRU */ 494 case IEEE80211_M_AHDEMO: 495 sc->sc_mib_local.Network_Mode = 0; 496 sc->sc_mib_local.Acting_as_AP = 0; 497 break; 498 case IEEE80211_M_HOSTAP: 499 sc->sc_mib_local.Network_Mode = 1; 500 sc->sc_mib_local.Acting_as_AP = 1; 501 break; 502 case IEEE80211_M_MONITOR: 503 return ENODEV; 504 } 505 #if 0 506 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 507 #endif 508 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 509 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 510 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 511 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 512 ic->ic_des_esslen); 513 514 /* configure basic rate */ 515 if (ic->ic_phytype == IEEE80211_T_FH) 516 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 517 else 518 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 519 if (ic->ic_fixed_rate != -1) { 520 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 521 } else { 522 rate = 0; 523 for (i = 0; i < rs->rs_nrates; i++) { 524 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 525 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 526 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 527 } 528 } 529 rate *= 5; 530 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 531 532 if ((error = awi_mode_init(sc)) != 0) { 533 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 534 awi_stop(ifp, 1); 535 return error; 536 } 537 538 /* start transmitter */ 539 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 540 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 541 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 542 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 543 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 544 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 545 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 546 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 547 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 548 awi_write_4(sc, AWI_CA_TX_MGT, 0); 549 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 550 awi_write_4(sc, AWI_CA_TX_PS, 0); 551 awi_write_4(sc, AWI_CA_TX_CF, 0); 552 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 553 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 554 awi_stop(ifp, 1); 555 return error; 556 } 557 558 /* start receiver */ 559 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 560 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 561 awi_stop(ifp, 1); 562 return error; 563 } 564 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 565 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 566 567 ifp->if_flags |= IFF_RUNNING; 568 ifp->if_flags &= ~IFF_OACTIVE; 569 ic->ic_state = IEEE80211_S_INIT; 570 571 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 572 ic->ic_opmode == IEEE80211_M_HOSTAP) { 573 ni->ni_chan = ic->ic_ibss_chan; 574 ni->ni_intval = ic->ic_lintval; 575 ni->ni_rssi = 0; 576 ni->ni_rstamp = 0; 577 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 578 ni->ni_rates = 579 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 580 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 581 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 582 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 583 ni->ni_esslen = ic->ic_des_esslen; 584 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 585 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 586 if (ic->ic_phytype == IEEE80211_T_FH) { 587 ni->ni_fhdwell = 200; /* XXX */ 588 ni->ni_fhindex = 1; 589 } 590 } else { 591 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 592 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 593 ni->ni_esslen = 0; 594 } 595 if (ic->ic_flags & IEEE80211_F_PRIVACY) 596 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 597 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 598 ic->ic_flags |= IEEE80211_F_SIBSS; 599 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 600 sc->sc_substate = AWI_ST_NONE; 601 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 602 } else { 603 /* XXX check sc->sc_cur_chan */ 604 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 605 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 606 } 607 return 0; 608 } 609 610 static void 611 awi_stop(struct ifnet *ifp, int disable) 612 { 613 struct awi_softc *sc = ifp->if_softc; 614 615 if (!sc->sc_enabled) 616 return; 617 618 DPRINTF(("awi_stop(%d)\n", disable)); 619 620 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 621 622 if (!sc->sc_invalid) { 623 if (sc->sc_cmd_inprog) 624 (void)awi_cmd_wait(sc); 625 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 626 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 627 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 628 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 629 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 630 awi_write_1(sc, AWI_CA_FTX_PS, 0); 631 awi_write_1(sc, AWI_CA_FTX_CF, 0); 632 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 633 } 634 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 635 ifp->if_timer = 0; 636 sc->sc_tx_timer = sc->sc_rx_timer = 0; 637 if (sc->sc_rxpend != NULL) { 638 m_freem(sc->sc_rxpend); 639 sc->sc_rxpend = NULL; 640 } 641 IFQ_PURGE(&ifp->if_snd); 642 643 if (disable) { 644 if (!sc->sc_invalid) 645 am79c930_gcr_setbits(&sc->sc_chip, 646 AM79C930_GCR_CORESET); 647 if (sc->sc_disable) 648 (*sc->sc_disable)(sc); 649 sc->sc_enabled = 0; 650 } 651 } 652 653 static void 654 awi_start(struct ifnet *ifp) 655 { 656 struct awi_softc *sc = ifp->if_softc; 657 struct ieee80211com *ic = &sc->sc_ic; 658 struct ether_header *eh; 659 struct ieee80211_node *ni; 660 struct ieee80211_frame *wh; 661 struct mbuf *m, *m0; 662 int len, dowep; 663 u_int32_t txd, frame, ntxd; 664 u_int8_t rate; 665 666 if (!sc->sc_enabled || sc->sc_invalid) 667 return; 668 669 for (;;) { 670 txd = sc->sc_txnext; 671 IF_POLL(&ic->ic_mgtq, m0); 672 dowep = 0; 673 if (m0 != NULL) { 674 len = m0->m_pkthdr.len; 675 if (awi_next_txd(sc, len, &frame, &ntxd)) { 676 ifp->if_flags |= IFF_OACTIVE; 677 break; 678 } 679 IF_DEQUEUE(&ic->ic_mgtq, m0); 680 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 681 } else { 682 if (ic->ic_state != IEEE80211_S_RUN) 683 break; 684 IFQ_POLL(&ifp->if_snd, m0); 685 if (m0 == NULL) 686 break; 687 /* 688 * Need to calculate the real length to determine 689 * if the transmit buffer has a room for the packet. 690 */ 691 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 692 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 693 len += sizeof(struct llc) - 694 sizeof(struct ether_header); 695 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 696 dowep = 1; 697 len += IEEE80211_WEP_IVLEN + 698 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 699 } 700 if (awi_next_txd(sc, len, &frame, &ntxd)) { 701 ifp->if_flags |= IFF_OACTIVE; 702 break; 703 } 704 IFQ_DEQUEUE(&ifp->if_snd, m0); 705 ifp->if_opackets++; 706 #if NBPFILTER > 0 707 if (ifp->if_bpf) 708 bpf_mtap(ifp->if_bpf, m0); 709 #endif 710 eh = mtod(m0, struct ether_header *); 711 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 712 if (ni == NULL) { 713 ifp->if_oerrors++; 714 continue; 715 } 716 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 717 m0 = awi_ether_encap(sc, m0); 718 else { 719 m0 = ieee80211_encap(ic, m0, ni); 720 } 721 if (m0 == NULL) { 722 ieee80211_free_node(ni); 723 ifp->if_oerrors++; 724 continue; 725 } 726 wh = mtod(m0, struct ieee80211_frame *); 727 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 728 (ic->ic_opmode == IEEE80211_M_HOSTAP || 729 ic->ic_opmode == IEEE80211_M_IBSS) && 730 sc->sc_adhoc_ap == 0 && 731 (ifp->if_flags & IFF_LINK0) == 0 && 732 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 733 IEEE80211_FC0_TYPE_DATA) { 734 m_freem(m0); 735 ieee80211_free_node(ni); 736 ifp->if_oerrors++; 737 continue; 738 } 739 } 740 #if NBPFILTER > 0 741 if (ic->ic_rawbpf) 742 bpf_mtap(ic->ic_rawbpf, m0); 743 #endif 744 if (dowep) { 745 if ((ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 746 m_freem(m0); 747 ieee80211_free_node(ni); 748 ifp->if_oerrors++; 749 continue; 750 } 751 } 752 ieee80211_free_node(ni); 753 #ifdef DIAGNOSTIC 754 if (m0->m_pkthdr.len != len) { 755 printf("%s: length %d should be %d\n", 756 sc->sc_if.if_xname, m0->m_pkthdr.len, len); 757 m_freem(m0); 758 ifp->if_oerrors++; 759 continue; 760 } 761 #endif 762 763 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 764 ieee80211_dump_pkt(m0->m_data, m0->m_len, 765 ic->ic_bss->ni_rates. 766 rs_rates[ic->ic_bss->ni_txrate] & 767 IEEE80211_RATE_VAL, -1); 768 769 for (m = m0, len = 0; m != NULL; m = m->m_next) { 770 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 771 m->m_len); 772 len += m->m_len; 773 } 774 m_freem(m0); 775 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 776 IEEE80211_RATE_VAL) * 5; 777 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 778 awi_write_4(sc, txd + AWI_TXD_START, frame); 779 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 780 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 781 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 782 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 783 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 784 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 785 sc->sc_txnext = ntxd; 786 787 sc->sc_tx_timer = 5; 788 ifp->if_timer = 1; 789 } 790 } 791 792 static void 793 awi_watchdog(struct ifnet *ifp) 794 { 795 struct awi_softc *sc = ifp->if_softc; 796 u_int32_t prevdone; 797 int ocansleep; 798 799 ifp->if_timer = 0; 800 if (!sc->sc_enabled || sc->sc_invalid) 801 return; 802 803 ocansleep = sc->sc_cansleep; 804 sc->sc_cansleep = 0; 805 if (sc->sc_tx_timer) { 806 if (--sc->sc_tx_timer == 0) { 807 printf("%s: device timeout\n", ifp->if_xname); 808 prevdone = sc->sc_txdone; 809 awi_tx_int(sc); 810 if (sc->sc_txdone == prevdone) { 811 ifp->if_oerrors++; 812 awi_init(ifp); 813 goto out; 814 } 815 } 816 ifp->if_timer = 1; 817 } 818 if (sc->sc_rx_timer) { 819 if (--sc->sc_rx_timer == 0) { 820 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 821 ieee80211_new_state(&sc->sc_ic, 822 IEEE80211_S_SCAN, -1); 823 goto out; 824 } 825 } else 826 ifp->if_timer = 1; 827 } 828 /* TODO: rate control */ 829 ieee80211_watchdog(&sc->sc_ic); 830 out: 831 sc->sc_cansleep = ocansleep; 832 } 833 834 static int 835 awi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 836 { 837 struct awi_softc *sc = ifp->if_softc; 838 struct ifreq *ifr = (struct ifreq *)data; 839 int s, error; 840 841 s = splnet(); 842 /* serialize ioctl, since we may sleep */ 843 if ((error = awi_lock(sc)) != 0) 844 goto cantlock; 845 846 switch (cmd) { 847 case SIOCSIFFLAGS: 848 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 849 break; 850 if (ifp->if_flags & IFF_UP) { 851 if (sc->sc_enabled) { 852 /* 853 * To avoid rescanning another access point, 854 * do not call awi_init() here. Instead, 855 * only reflect promisc mode settings. 856 */ 857 error = awi_mode_init(sc); 858 } else 859 error = awi_init(ifp); 860 } else if (sc->sc_enabled) 861 awi_stop(ifp, 1); 862 break; 863 case SIOCSIFMEDIA: 864 case SIOCGIFMEDIA: 865 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 866 break; 867 case SIOCADDMULTI: 868 case SIOCDELMULTI: 869 error = ether_ioctl(ifp, cmd, data); 870 if (error == ENETRESET) { 871 /* do not rescan */ 872 if (ifp->if_flags & IFF_RUNNING) 873 error = awi_mode_init(sc); 874 else 875 error = 0; 876 } 877 break; 878 default: 879 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 880 if (error == ENETRESET) { 881 if (sc->sc_enabled) 882 error = awi_init(ifp); 883 else 884 error = 0; 885 } 886 break; 887 } 888 awi_unlock(sc); 889 cantlock: 890 splx(s); 891 return error; 892 } 893 894 /* 895 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 896 * 897 * TBD factor with ieee80211_media_change 898 */ 899 static int 900 awi_media_change(struct ifnet *ifp) 901 { 902 struct awi_softc *sc = ifp->if_softc; 903 struct ieee80211com *ic = &sc->sc_ic; 904 struct ifmedia_entry *ime; 905 enum ieee80211_opmode newmode; 906 int i, rate, newadhoc_ap, error = 0; 907 908 ime = ic->ic_media.ifm_cur; 909 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 910 i = -1; 911 } else { 912 struct ieee80211_rateset *rs = 913 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 914 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 915 rate = ieee80211_media2rate(ime->ifm_media); 916 if (rate == 0) 917 return EINVAL; 918 for (i = 0; i < rs->rs_nrates; i++) { 919 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 920 break; 921 } 922 if (i == rs->rs_nrates) 923 return EINVAL; 924 } 925 if (ic->ic_fixed_rate != i) { 926 ic->ic_fixed_rate = i; 927 error = ENETRESET; 928 } 929 930 /* 931 * combination of mediaopt 932 * 933 * hostap adhoc flag0 opmode adhoc_ap comment 934 * + - - HOSTAP 0 HostAP 935 * - + - IBSS 0 IBSS 936 * - + + AHDEMO 0 WaveLAN adhoc 937 * - - + IBSS 1 Melco old Sta 938 * also LINK0 939 * - - - STA 0 Infra Station 940 */ 941 newadhoc_ap = 0; 942 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 943 newmode = IEEE80211_M_HOSTAP; 944 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 945 if (ic->ic_phytype == IEEE80211_T_DS && 946 (ime->ifm_media & IFM_FLAG0)) 947 newmode = IEEE80211_M_AHDEMO; 948 else 949 newmode = IEEE80211_M_IBSS; 950 } else if (ime->ifm_media & IFM_FLAG0) { 951 newmode = IEEE80211_M_IBSS; 952 newadhoc_ap = 1; 953 } else 954 newmode = IEEE80211_M_STA; 955 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 956 ic->ic_opmode = newmode; 957 sc->sc_adhoc_ap = newadhoc_ap; 958 error = ENETRESET; 959 } 960 961 if (error == ENETRESET) { 962 if (sc->sc_enabled) 963 error = awi_init(ifp); 964 else 965 error = 0; 966 } 967 return error; 968 } 969 970 static void 971 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 972 { 973 struct awi_softc *sc = ifp->if_softc; 974 struct ieee80211com *ic = &sc->sc_ic; 975 int rate; 976 enum ieee80211_phymode mode; 977 978 imr->ifm_status = IFM_AVALID; 979 if (ic->ic_state == IEEE80211_S_RUN) 980 imr->ifm_status |= IFM_ACTIVE; 981 imr->ifm_active = IFM_IEEE80211; 982 if (ic->ic_phytype == IEEE80211_T_FH) 983 mode = IEEE80211_MODE_FH; 984 else 985 mode = IEEE80211_MODE_11B; 986 if (ic->ic_state == IEEE80211_S_RUN) { 987 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 988 IEEE80211_RATE_VAL; 989 } else { 990 if (ic->ic_fixed_rate == -1) 991 rate = 0; 992 else 993 rate = ic->ic_sup_rates[mode]. 994 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 995 } 996 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 997 switch (ic->ic_opmode) { 998 case IEEE80211_M_MONITOR: /* we should never reach here */ 999 break; 1000 case IEEE80211_M_STA: 1001 break; 1002 case IEEE80211_M_IBSS: 1003 if (sc->sc_adhoc_ap) 1004 imr->ifm_active |= IFM_FLAG0; 1005 else 1006 imr->ifm_active |= IFM_IEEE80211_ADHOC; 1007 break; 1008 case IEEE80211_M_AHDEMO: 1009 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1010 break; 1011 case IEEE80211_M_HOSTAP: 1012 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1013 break; 1014 } 1015 } 1016 1017 static int 1018 awi_mode_init(struct awi_softc *sc) 1019 { 1020 struct ifnet *ifp = &sc->sc_if; 1021 int n, error; 1022 struct ether_multi *enm; 1023 struct ether_multistep step; 1024 1025 /* reinitialize muticast filter */ 1026 n = 0; 1027 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1028 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1029 (ifp->if_flags & IFF_PROMISC)) { 1030 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1031 goto set_mib; 1032 } 1033 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1034 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 1035 while (enm != NULL) { 1036 if (n == AWI_GROUP_ADDR_SIZE || 1037 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1038 goto set_mib; 1039 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1040 enm->enm_addrlo); 1041 n++; 1042 ETHER_NEXT_MULTI(step, enm); 1043 } 1044 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1045 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1046 IEEE80211_ADDR_LEN); 1047 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1048 1049 set_mib: 1050 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1051 ifp->if_flags &= ~IFF_ALLMULTI; 1052 else 1053 ifp->if_flags |= IFF_ALLMULTI; 1054 sc->sc_mib_mgt.Wep_Required = 1055 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1056 1057 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1058 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1059 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1060 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1061 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1062 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1063 return error; 1064 } 1065 return 0; 1066 } 1067 1068 static void 1069 awi_rx_int(struct awi_softc *sc) 1070 { 1071 struct ieee80211com *ic = &sc->sc_ic; 1072 struct ifnet *ifp = &sc->sc_if; 1073 struct ieee80211_frame_min *wh; 1074 struct ieee80211_node *ni; 1075 u_int8_t state, rate, rssi; 1076 u_int16_t len; 1077 u_int32_t frame, next, rstamp, rxoff; 1078 struct mbuf *m; 1079 1080 rxoff = sc->sc_rxdoff; 1081 for (;;) { 1082 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1083 if (state & AWI_RXD_ST_OWN) 1084 break; 1085 if (!(state & AWI_RXD_ST_CONSUMED)) { 1086 if (sc->sc_substate != AWI_ST_NONE) 1087 goto rx_next; 1088 if (state & AWI_RXD_ST_RXERROR) { 1089 ifp->if_ierrors++; 1090 goto rx_next; 1091 } 1092 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1093 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1094 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1095 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1096 0x7fff; 1097 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1098 m = awi_devget(sc, frame, len); 1099 if (m == NULL) { 1100 ifp->if_ierrors++; 1101 goto rx_next; 1102 } 1103 if (state & AWI_RXD_ST_LF) { 1104 /* TODO check my bss */ 1105 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1106 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1107 sc->sc_rx_timer = 10; 1108 ifp->if_timer = 1; 1109 } 1110 if ((ifp->if_flags & IFF_DEBUG) && 1111 (ifp->if_flags & IFF_LINK2)) 1112 ieee80211_dump_pkt(m->m_data, m->m_len, 1113 rate / 5, rssi); 1114 if ((ifp->if_flags & IFF_LINK0) || 1115 sc->sc_adhoc_ap) 1116 m = awi_ether_modcap(sc, m); 1117 else 1118 m = m_pullup(m, sizeof(*wh)); 1119 if (m == NULL) { 1120 ifp->if_ierrors++; 1121 goto rx_next; 1122 } 1123 wh = mtod(m, struct ieee80211_frame_min *); 1124 ni = ieee80211_find_rxnode(ic, wh); 1125 ieee80211_input(ic, m, ni, rssi, rstamp); 1126 /* 1127 * The frame may have caused the 1128 * node to be marked for reclamation 1129 * (e.g. in response to a DEAUTH 1130 * message) so use release_node here 1131 * instead of unref_node. 1132 */ 1133 ieee80211_free_node(ni); 1134 } else 1135 sc->sc_rxpend = m; 1136 rx_next: 1137 state |= AWI_RXD_ST_CONSUMED; 1138 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1139 } 1140 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1141 if (next & AWI_RXD_NEXT_LAST) 1142 break; 1143 /* make sure the next pointer is correct */ 1144 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1145 break; 1146 state |= AWI_RXD_ST_OWN; 1147 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1148 rxoff = next & 0x7fff; 1149 } 1150 sc->sc_rxdoff = rxoff; 1151 } 1152 1153 static void 1154 awi_tx_int(struct awi_softc *sc) 1155 { 1156 struct ifnet *ifp = &sc->sc_if; 1157 u_int8_t flags; 1158 1159 while (sc->sc_txdone != sc->sc_txnext) { 1160 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1161 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1162 break; 1163 if (flags & AWI_TXD_ST_ERROR) 1164 ifp->if_oerrors++; 1165 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1166 0x7fff; 1167 } 1168 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1169 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1170 sc->sc_tx_timer = 0; 1171 ifp->if_flags &= ~IFF_OACTIVE; 1172 awi_start(ifp); 1173 } 1174 1175 static struct mbuf * 1176 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1177 { 1178 struct ifnet *ifp = &sc->sc_if; 1179 struct mbuf *m; 1180 struct mbuf *top, **mp; 1181 u_int tlen; 1182 1183 top = sc->sc_rxpend; 1184 mp = ⊤ 1185 if (top != NULL) { 1186 sc->sc_rxpend = NULL; 1187 top->m_pkthdr.len += len; 1188 m = top; 1189 while (*mp != NULL) { 1190 m = *mp; 1191 mp = &m->m_next; 1192 } 1193 if (m->m_flags & M_EXT) 1194 tlen = m->m_ext.ext_size; 1195 else if (m->m_flags & M_PKTHDR) 1196 tlen = MHLEN; 1197 else 1198 tlen = MLEN; 1199 tlen -= m->m_len; 1200 if (tlen > len) 1201 tlen = len; 1202 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1203 off += tlen; 1204 len -= tlen; 1205 } 1206 1207 while (len > 0) { 1208 if (top == NULL) { 1209 MGETHDR(m, M_DONTWAIT, MT_DATA); 1210 if (m == NULL) 1211 return NULL; 1212 m->m_pkthdr.rcvif = ifp; 1213 m->m_pkthdr.len = len; 1214 m->m_len = MHLEN; 1215 m->m_flags |= M_HASFCS; 1216 } else { 1217 MGET(m, M_DONTWAIT, MT_DATA); 1218 if (m == NULL) { 1219 m_freem(top); 1220 return NULL; 1221 } 1222 m->m_len = MLEN; 1223 } 1224 if (len >= MINCLSIZE) { 1225 MCLGET(m, M_DONTWAIT); 1226 if (m->m_flags & M_EXT) 1227 m->m_len = m->m_ext.ext_size; 1228 } 1229 if (top == NULL) { 1230 int hdrlen = sizeof(struct ieee80211_frame) + 1231 sizeof(struct llc); 1232 char *newdata = (char *) 1233 ALIGN(m->m_data + hdrlen) - hdrlen; 1234 m->m_len -= newdata - m->m_data; 1235 m->m_data = newdata; 1236 } 1237 if (m->m_len > len) 1238 m->m_len = len; 1239 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1240 off += m->m_len; 1241 len -= m->m_len; 1242 *mp = m; 1243 mp = &m->m_next; 1244 } 1245 return top; 1246 } 1247 1248 /* 1249 * Initialize hardware and start firmware to accept commands. 1250 * Called everytime after power on firmware. 1251 */ 1252 1253 static int 1254 awi_hw_init(struct awi_softc *sc) 1255 { 1256 u_int8_t status; 1257 u_int16_t intmask; 1258 int i, error; 1259 1260 sc->sc_enab_intr = 0; 1261 sc->sc_invalid = 0; /* XXX: really? */ 1262 awi_drvstate(sc, AWI_DRV_RESET); 1263 1264 /* reset firmware */ 1265 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1266 DELAY(100); 1267 awi_write_1(sc, AWI_SELFTEST, 0); 1268 awi_write_1(sc, AWI_CMD, 0); 1269 awi_write_1(sc, AWI_BANNER, 0); 1270 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1271 DELAY(100); 1272 1273 /* wait for selftest completion */ 1274 for (i = 0; ; i++) { 1275 if (sc->sc_invalid) 1276 return ENXIO; 1277 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1278 printf("%s: failed to complete selftest (timeout)\n", 1279 sc->sc_if.if_xname); 1280 return ENXIO; 1281 } 1282 status = awi_read_1(sc, AWI_SELFTEST); 1283 if ((status & 0xf0) == 0xf0) 1284 break; 1285 if (sc->sc_cansleep) { 1286 sc->sc_sleep_cnt++; 1287 (void)tsleep(sc, PWAIT, "awitst", 1); 1288 sc->sc_sleep_cnt--; 1289 } else { 1290 DELAY(1000*1000/hz); 1291 } 1292 } 1293 if (status != AWI_SELFTEST_PASSED) { 1294 printf("%s: failed to complete selftest (code %x)\n", 1295 sc->sc_if.if_xname, status); 1296 return ENXIO; 1297 } 1298 1299 /* check banner to confirm firmware write it */ 1300 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1301 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1302 printf("%s: failed to complete selftest (bad banner)\n", 1303 sc->sc_if.if_xname); 1304 for (i = 0; i < AWI_BANNER_LEN; i++) 1305 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1306 printf("\n"); 1307 return ENXIO; 1308 } 1309 1310 /* initializing interrupt */ 1311 sc->sc_enab_intr = 1; 1312 error = awi_intr_lock(sc); 1313 if (error) 1314 return error; 1315 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1316 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1317 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1318 awi_write_1(sc, AWI_INTMASK2, 0); 1319 awi_write_1(sc, AWI_INTSTAT, 0); 1320 awi_write_1(sc, AWI_INTSTAT2, 0); 1321 awi_intr_unlock(sc); 1322 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1323 1324 /* issuing interface test command */ 1325 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1326 if (error) { 1327 printf("%s: failed to complete selftest", 1328 sc->sc_if.if_xname); 1329 if (error == ENXIO) 1330 printf(" (no hardware)\n"); 1331 else if (error != EWOULDBLOCK) 1332 printf(" (error %d)\n", error); 1333 else if (sc->sc_cansleep) 1334 printf(" (lost interrupt)\n"); 1335 else 1336 printf(" (command timeout)\n"); 1337 return error; 1338 } 1339 1340 /* Initialize VBM */ 1341 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1342 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1343 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1344 return 0; 1345 } 1346 1347 /* 1348 * Extract the factory default MIB value from firmware and assign the driver 1349 * default value. 1350 * Called once at attaching the interface. 1351 */ 1352 1353 static int 1354 awi_init_mibs(struct awi_softc *sc) 1355 { 1356 int chan, i, error; 1357 struct ieee80211com *ic = &sc->sc_ic; 1358 struct awi_chanset *cs; 1359 1360 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1361 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1362 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1363 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1364 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1365 printf("%s: failed to get default mib value (error %d)\n", 1366 sc->sc_if.if_xname, error); 1367 return error; 1368 } 1369 1370 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1371 for (cs = awi_chanset; ; cs++) { 1372 if (cs->cs_type == 0) { 1373 printf("%s: failed to set available channel\n", 1374 sc->sc_if.if_xname); 1375 return ENXIO; 1376 } 1377 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1378 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1379 break; 1380 } 1381 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1382 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1383 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1384 setbit(sc->sc_ic.ic_chan_avail, chan); 1385 /* XXX for FHSS, does frequency matter? */ 1386 ic->ic_channels[chan].ic_freq = 0; 1387 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1388 /* 1389 * According to the IEEE 802.11 specification, 1390 * hop pattern parameter for FH phy should be 1391 * incremented by 3 for given hop chanset, i.e., 1392 * the chanset parameter is calculated for given 1393 * hop patter. However, BayStack 650 Access Points 1394 * apparently use fixed hop chanset parameter value 1395 * 1 for any hop pattern. So we also try this 1396 * combination of hop chanset and pattern. 1397 */ 1398 chan = IEEE80211_FH_CHAN(1, i); 1399 setbit(sc->sc_ic.ic_chan_avail, chan); 1400 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1401 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1402 } 1403 } else { 1404 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1405 setbit(sc->sc_ic.ic_chan_avail, i); 1406 ic->ic_channels[i].ic_freq = 1407 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1408 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1409 } 1410 } 1411 sc->sc_cur_chan = cs->cs_def; 1412 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1413 1414 sc->sc_mib_local.Fragmentation_Dis = 1; 1415 sc->sc_mib_local.Add_PLCP_Dis = 0; 1416 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1417 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1418 sc->sc_mib_local.Re_Assembly_Dis = 1; 1419 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1420 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1421 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1422 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1423 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1424 sc->sc_mib_local.Network_Mode = 1; 1425 sc->sc_mib_local.PWD_Lvl = 0; 1426 sc->sc_mib_local.CFP_Mode = 0; 1427 1428 /* allocate buffers */ 1429 sc->sc_txbase = AWI_BUFFERS; 1430 sc->sc_txend = sc->sc_txbase + 1431 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1432 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1433 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1434 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1435 sc->sc_txend - sc->sc_txbase); 1436 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1437 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1438 AWI_BUFFERS_END - sc->sc_txend); 1439 sc->sc_mib_local.Acting_as_AP = 0; 1440 sc->sc_mib_local.Fill_CFP = 0; 1441 1442 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1443 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1444 1445 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1446 sc->sc_mib_mgt.aDTIM_Period = 1; 1447 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1448 return 0; 1449 } 1450 1451 static int 1452 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1453 { 1454 int error; 1455 u_int8_t size, *ptr; 1456 1457 switch (mib) { 1458 case AWI_MIB_LOCAL: 1459 ptr = (u_int8_t *)&sc->sc_mib_local; 1460 size = sizeof(sc->sc_mib_local); 1461 break; 1462 case AWI_MIB_ADDR: 1463 ptr = (u_int8_t *)&sc->sc_mib_addr; 1464 size = sizeof(sc->sc_mib_addr); 1465 break; 1466 case AWI_MIB_MAC: 1467 ptr = (u_int8_t *)&sc->sc_mib_mac; 1468 size = sizeof(sc->sc_mib_mac); 1469 break; 1470 case AWI_MIB_STAT: 1471 ptr = (u_int8_t *)&sc->sc_mib_stat; 1472 size = sizeof(sc->sc_mib_stat); 1473 break; 1474 case AWI_MIB_MGT: 1475 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1476 size = sizeof(sc->sc_mib_mgt); 1477 break; 1478 case AWI_MIB_PHY: 1479 ptr = (u_int8_t *)&sc->sc_mib_phy; 1480 size = sizeof(sc->sc_mib_phy); 1481 break; 1482 default: 1483 return EINVAL; 1484 } 1485 if (sc->sc_cmd_inprog) { 1486 if ((error = awi_cmd_wait(sc)) != 0) { 1487 if (error == EWOULDBLOCK) { 1488 DPRINTF(("awi_mib: cmd %d inprog", 1489 sc->sc_cmd_inprog)); 1490 } 1491 return error; 1492 } 1493 } 1494 sc->sc_cmd_inprog = cmd; 1495 if (cmd == AWI_CMD_SET_MIB) 1496 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1497 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1498 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1499 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1500 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1501 return error; 1502 if (cmd == AWI_CMD_GET_MIB) { 1503 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1504 #ifdef AWI_DEBUG 1505 if (awi_debug) { 1506 int i; 1507 1508 printf("awi_mib: #%d:", mib); 1509 for (i = 0; i < size; i++) 1510 printf(" %02x", ptr[i]); 1511 printf("\n"); 1512 } 1513 #endif 1514 } 1515 return 0; 1516 } 1517 1518 static int 1519 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1520 { 1521 u_int8_t status; 1522 int error = 0; 1523 #ifdef AWI_DEBUG 1524 static const char *cmdname[] = { 1525 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1526 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1527 }; 1528 #endif 1529 1530 #ifdef AWI_DEBUG 1531 if (awi_debug > 1) { 1532 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1533 printf("awi_cmd: #%d", cmd); 1534 else 1535 printf("awi_cmd: %s", cmdname[cmd]); 1536 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1537 } 1538 #endif 1539 sc->sc_cmd_inprog = cmd; 1540 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1541 awi_write_1(sc, AWI_CMD, cmd); 1542 if (wflag == AWI_NOWAIT) 1543 return EINPROGRESS; 1544 if ((error = awi_cmd_wait(sc)) != 0) 1545 return error; 1546 status = awi_read_1(sc, AWI_CMD_STATUS); 1547 awi_write_1(sc, AWI_CMD, 0); 1548 switch (status) { 1549 case AWI_STAT_OK: 1550 break; 1551 case AWI_STAT_BADPARM: 1552 return EINVAL; 1553 default: 1554 printf("%s: command %d failed %x\n", 1555 sc->sc_if.if_xname, cmd, status); 1556 return ENXIO; 1557 } 1558 return 0; 1559 } 1560 1561 static int 1562 awi_cmd_wait(struct awi_softc *sc) 1563 { 1564 int i, error = 0; 1565 1566 i = 0; 1567 while (sc->sc_cmd_inprog) { 1568 if (sc->sc_invalid) 1569 return ENXIO; 1570 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1571 printf("%s: failed to access hardware\n", 1572 sc->sc_if.if_xname); 1573 sc->sc_invalid = 1; 1574 return ENXIO; 1575 } 1576 if (sc->sc_cansleep) { 1577 sc->sc_sleep_cnt++; 1578 error = tsleep(sc, PWAIT, "awicmd", 1579 AWI_CMD_TIMEOUT*hz/1000); 1580 sc->sc_sleep_cnt--; 1581 } else { 1582 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1583 awi_cmd_done(sc); 1584 break; 1585 } 1586 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1587 error = EWOULDBLOCK; 1588 else 1589 DELAY(10); 1590 } 1591 if (error) 1592 break; 1593 } 1594 if (error) { 1595 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1596 sc->sc_cmd_inprog, error)); 1597 } 1598 return error; 1599 } 1600 1601 static void 1602 awi_cmd_done(struct awi_softc *sc) 1603 { 1604 u_int8_t cmd, status; 1605 1606 status = awi_read_1(sc, AWI_CMD_STATUS); 1607 if (status == AWI_STAT_IDLE) 1608 return; /* stray interrupt */ 1609 1610 cmd = sc->sc_cmd_inprog; 1611 sc->sc_cmd_inprog = 0; 1612 wakeup(sc); 1613 awi_write_1(sc, AWI_CMD, 0); 1614 1615 if (status != AWI_STAT_OK) { 1616 printf("%s: command %d failed %x\n", 1617 sc->sc_if.if_xname, cmd, status); 1618 sc->sc_substate = AWI_ST_NONE; 1619 return; 1620 } 1621 if (sc->sc_substate != AWI_ST_NONE) 1622 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1623 } 1624 1625 static int 1626 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1627 { 1628 u_int32_t txd, ntxd, frame; 1629 1630 txd = sc->sc_txnext; 1631 frame = txd + AWI_TXD_SIZE; 1632 if (frame + len > sc->sc_txend) 1633 frame = sc->sc_txbase; 1634 ntxd = frame + len; 1635 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1636 ntxd = sc->sc_txbase; 1637 *framep = frame; 1638 *ntxdp = ntxd; 1639 /* 1640 * Determine if there are any room in ring buffer. 1641 * --- send wait, === new data, +++ conflict (ENOBUFS) 1642 * base........................end 1643 * done----txd=====ntxd OK 1644 * --txd=====done++++ntxd-- full 1645 * --txd=====ntxd done-- OK 1646 * ==ntxd done----txd=== OK 1647 * ==done++++ntxd----txd=== full 1648 * ++ntxd txd=====done++ full 1649 */ 1650 if (txd < ntxd) { 1651 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1652 return ENOBUFS; 1653 } else { 1654 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1655 return ENOBUFS; 1656 } 1657 return 0; 1658 } 1659 1660 static int 1661 awi_lock(struct awi_softc *sc) 1662 { 1663 int error = 0; 1664 1665 if (curlwp == NULL) 1666 { 1667 /* 1668 * XXX 1669 * Though driver ioctl should be called with context, 1670 * KAME ipv6 stack calls ioctl in interrupt for now. 1671 * We simply abort the request if there are other 1672 * ioctl requests in progress. 1673 */ 1674 if (sc->sc_busy) { 1675 if (sc->sc_invalid) 1676 return ENXIO; 1677 return EWOULDBLOCK; 1678 } 1679 sc->sc_busy = 1; 1680 sc->sc_cansleep = 0; 1681 return 0; 1682 } 1683 while (sc->sc_busy) { 1684 if (sc->sc_invalid) 1685 return ENXIO; 1686 sc->sc_sleep_cnt++; 1687 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1688 sc->sc_sleep_cnt--; 1689 if (error) 1690 return error; 1691 } 1692 sc->sc_busy = 1; 1693 sc->sc_cansleep = 1; 1694 return 0; 1695 } 1696 1697 static void 1698 awi_unlock(struct awi_softc *sc) 1699 { 1700 sc->sc_busy = 0; 1701 sc->sc_cansleep = 0; 1702 if (sc->sc_sleep_cnt) 1703 wakeup(sc); 1704 } 1705 1706 static int 1707 awi_intr_lock(struct awi_softc *sc) 1708 { 1709 u_int8_t status; 1710 int i, retry; 1711 1712 status = 1; 1713 for (retry = 0; retry < 10; retry++) { 1714 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1715 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1716 break; 1717 DELAY(5); 1718 } 1719 if (status != 0) 1720 break; 1721 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1722 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1723 break; 1724 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1725 } 1726 if (status != 0) { 1727 printf("%s: failed to lock interrupt\n", 1728 sc->sc_if.if_xname); 1729 return ENXIO; 1730 } 1731 return 0; 1732 } 1733 1734 static void 1735 awi_intr_unlock(struct awi_softc *sc) 1736 { 1737 1738 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1739 } 1740 1741 static int 1742 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1743 { 1744 struct ifnet *ifp = ic->ic_ifp; 1745 struct awi_softc *sc = ifp->if_softc; 1746 struct ieee80211_node *ni; 1747 int error; 1748 u_int8_t newmode; 1749 enum ieee80211_state ostate; 1750 #ifdef AWI_DEBUG 1751 static const char *stname[] = 1752 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1753 static const char *substname[] = 1754 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1755 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1756 #endif /* AWI_DEBUG */ 1757 1758 ostate = ic->ic_state; 1759 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1760 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1761 1762 /* set LED */ 1763 switch (nstate) { 1764 case IEEE80211_S_INIT: 1765 awi_drvstate(sc, AWI_DRV_RESET); 1766 break; 1767 case IEEE80211_S_SCAN: 1768 if (ic->ic_opmode == IEEE80211_M_IBSS || 1769 ic->ic_opmode == IEEE80211_M_AHDEMO) 1770 awi_drvstate(sc, AWI_DRV_ADHSC); 1771 else 1772 awi_drvstate(sc, AWI_DRV_INFSY); 1773 break; 1774 case IEEE80211_S_AUTH: 1775 awi_drvstate(sc, AWI_DRV_INFSY); 1776 break; 1777 case IEEE80211_S_ASSOC: 1778 awi_drvstate(sc, AWI_DRV_INFAUTH); 1779 break; 1780 case IEEE80211_S_RUN: 1781 if (ic->ic_opmode == IEEE80211_M_IBSS || 1782 ic->ic_opmode == IEEE80211_M_AHDEMO) 1783 awi_drvstate(sc, AWI_DRV_ADHSY); 1784 else 1785 awi_drvstate(sc, AWI_DRV_INFASSOC); 1786 break; 1787 } 1788 1789 if (nstate == IEEE80211_S_INIT) { 1790 sc->sc_substate = AWI_ST_NONE; 1791 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1792 return (*sc->sc_newstate)(ic, nstate, arg); 1793 } 1794 1795 /* state transition */ 1796 if (nstate == IEEE80211_S_SCAN) { 1797 /* SCAN substate */ 1798 if (sc->sc_substate == AWI_ST_NONE) { 1799 sc->sc_nstate = nstate; /* next state in transition */ 1800 sc->sc_substate = AWI_ST_SCAN_INIT; 1801 } 1802 switch (sc->sc_substate) { 1803 case AWI_ST_SCAN_INIT: 1804 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1805 switch (ostate) { 1806 case IEEE80211_S_RUN: 1807 /* beacon miss */ 1808 if (ifp->if_flags & IFF_DEBUG) 1809 printf("%s: no recent beacons from %s;" 1810 " rescanning\n", 1811 ifp->if_xname, 1812 ether_sprintf(ic->ic_bss->ni_bssid)); 1813 /* FALLTHRU */ 1814 case IEEE80211_S_AUTH: 1815 case IEEE80211_S_ASSOC: 1816 case IEEE80211_S_INIT: 1817 ieee80211_begin_scan(ic, 1); 1818 /* FALLTHRU */ 1819 case IEEE80211_S_SCAN: 1820 /* scan next */ 1821 break; 1822 } 1823 if (ic->ic_flags & IEEE80211_F_ASCAN) 1824 newmode = AWI_SCAN_ACTIVE; 1825 else 1826 newmode = AWI_SCAN_PASSIVE; 1827 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1828 sc->sc_mib_mgt.aScan_Mode = newmode; 1829 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1830 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1831 break; 1832 } 1833 /* FALLTHRU */ 1834 case AWI_ST_SCAN_SETMIB: 1835 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1836 if (sc->sc_cmd_inprog) { 1837 if ((error = awi_cmd_wait(sc)) != 0) 1838 break; 1839 } 1840 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1841 ni = ic->ic_bss; 1842 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1843 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1844 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1845 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1846 awi_write_1(sc, AWI_CA_SCAN_SET, 1847 IEEE80211_FH_CHANSET( 1848 ieee80211_chan2ieee(ic, ni->ni_chan))); 1849 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1850 IEEE80211_FH_CHANPAT( 1851 ieee80211_chan2ieee(ic, ni->ni_chan))); 1852 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1853 } else { 1854 awi_write_1(sc, AWI_CA_SCAN_SET, 1855 ieee80211_chan2ieee(ic, ni->ni_chan)); 1856 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1857 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1858 } 1859 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1860 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1861 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1862 != 0) 1863 break; 1864 /* FALLTHRU */ 1865 case AWI_ST_SCAN_SCCMD: 1866 ic->ic_state = nstate; 1867 sc->sc_substate = AWI_ST_NONE; 1868 error = EINPROGRESS; 1869 break; 1870 default: 1871 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1872 stname[nstate], substname[sc->sc_substate])); 1873 sc->sc_substate = AWI_ST_NONE; 1874 error = EIO; 1875 break; 1876 } 1877 goto out; 1878 } 1879 1880 if (ostate == IEEE80211_S_SCAN) { 1881 /* set SSID and channel */ 1882 /* substate */ 1883 if (sc->sc_substate == AWI_ST_NONE) { 1884 sc->sc_nstate = nstate; /* next state in transition */ 1885 sc->sc_substate = AWI_ST_SUB_INIT; 1886 } 1887 ni = ic->ic_bss; 1888 switch (sc->sc_substate) { 1889 case AWI_ST_SUB_INIT: 1890 sc->sc_substate = AWI_ST_SUB_SETSS; 1891 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1892 ni->ni_bssid); 1893 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1894 AWI_ESS_ID_SIZE); 1895 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1896 IEEE80211_ELEMID_SSID; 1897 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1898 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1899 ni->ni_essid, ni->ni_esslen); 1900 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1901 ni->ni_intval); 1902 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1903 AWI_NOWAIT)) != 0) 1904 break; 1905 /* FALLTHRU */ 1906 case AWI_ST_SUB_SETSS: 1907 sc->sc_substate = AWI_ST_SUB_SYNC; 1908 if (sc->sc_cmd_inprog) { 1909 if ((error = awi_cmd_wait(sc)) != 0) 1910 break; 1911 } 1912 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1913 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1914 awi_write_1(sc, AWI_CA_SYNC_SET, 1915 IEEE80211_FH_CHANSET( 1916 ieee80211_chan2ieee(ic, ni->ni_chan))); 1917 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1918 IEEE80211_FH_CHANPAT( 1919 ieee80211_chan2ieee(ic, ni->ni_chan))); 1920 awi_write_1(sc, AWI_CA_SYNC_IDX, 1921 ni->ni_fhindex); 1922 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1923 ni->ni_fhdwell); 1924 } else { 1925 awi_write_1(sc, AWI_CA_SYNC_SET, 1926 ieee80211_chan2ieee(ic, ni->ni_chan)); 1927 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1928 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1929 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1930 } 1931 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1932 memset(&ni->ni_tstamp, 0, 1933 sizeof(ni->ni_tstamp)); 1934 ni->ni_rstamp = 0; 1935 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1936 } else 1937 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1938 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1939 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1940 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 1941 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1942 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1943 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1944 != 0) 1945 break; 1946 /* FALLTHRU */ 1947 case AWI_ST_SUB_SYNC: 1948 sc->sc_substate = AWI_ST_NONE; 1949 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1950 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1951 AWI_MIB_MGT, AWI_WAIT)) != 0) 1952 break; 1953 IEEE80211_ADDR_COPY(ni->ni_bssid, 1954 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1955 } else { 1956 if (nstate == IEEE80211_S_RUN) { 1957 sc->sc_rx_timer = 10; 1958 ifp->if_timer = 1; 1959 } 1960 } 1961 error = 0; 1962 break; 1963 default: 1964 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1965 stname[nstate], substname[sc->sc_substate])); 1966 sc->sc_substate = AWI_ST_NONE; 1967 error = EIO; 1968 break; 1969 } 1970 goto out; 1971 } 1972 1973 sc->sc_substate = AWI_ST_NONE; 1974 1975 return (*sc->sc_newstate)(ic, nstate, arg); 1976 out: 1977 if (error != 0) { 1978 if (error == EINPROGRESS) 1979 error = 0; 1980 return error; 1981 } 1982 return (*sc->sc_newstate)(ic, nstate, arg); 1983 } 1984 1985 static void 1986 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1987 struct ieee80211_node *ni, 1988 int subtype, int rssi, u_int32_t rstamp) 1989 { 1990 struct awi_softc *sc = ic->ic_ifp->if_softc; 1991 1992 /* probe request is handled by hardware */ 1993 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1994 return; 1995 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1996 } 1997 1998 static int 1999 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 2000 int type, int arg) 2001 { 2002 struct awi_softc *sc = ic->ic_ifp->if_softc; 2003 2004 /* probe request is handled by hardware */ 2005 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2006 return 0; 2007 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2008 } 2009 2010 static struct mbuf * 2011 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2012 { 2013 struct ieee80211com *ic = &sc->sc_ic; 2014 struct ieee80211_node *ni = ic->ic_bss; 2015 struct ether_header *eh; 2016 struct ieee80211_frame *wh; 2017 2018 if (m->m_len < sizeof(struct ether_header)) { 2019 m = m_pullup(m, sizeof(struct ether_header)); 2020 if (m == NULL) 2021 return NULL; 2022 } 2023 eh = mtod(m, struct ether_header *); 2024 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2025 if (m == NULL) 2026 return NULL; 2027 wh = mtod(m, struct ieee80211_frame *); 2028 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2029 *(u_int16_t *)wh->i_dur = 0; 2030 *(u_int16_t *)wh->i_seq = 2031 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2032 ni->ni_txseqs[0]++; 2033 if (ic->ic_opmode == IEEE80211_M_IBSS || 2034 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2035 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2036 if (sc->sc_adhoc_ap) 2037 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2038 else 2039 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2040 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2041 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2042 } else { 2043 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2044 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2045 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2046 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2047 } 2048 return m; 2049 } 2050 2051 static struct mbuf * 2052 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2053 { 2054 struct ieee80211com *ic = &sc->sc_ic; 2055 struct ether_header eh; 2056 struct ieee80211_frame wh; 2057 struct llc *llc; 2058 2059 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2060 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2061 if (m == NULL) 2062 return NULL; 2063 } 2064 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2065 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2066 return m; 2067 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2068 m_adj(m, sizeof(eh) - sizeof(*llc)); 2069 if (ic->ic_opmode == IEEE80211_M_IBSS || 2070 ic->ic_opmode == IEEE80211_M_AHDEMO) 2071 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2072 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2073 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2074 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2075 llc->llc_control = LLC_UI; 2076 llc->llc_snap.org_code[0] = 0; 2077 llc->llc_snap.org_code[1] = 0; 2078 llc->llc_snap.org_code[2] = 0; 2079 llc->llc_snap.ether_type = eh.ether_type; 2080 return m; 2081 } 2082
Indexes created Sat Oct 18 17:09:52 GMT 2025