awi.c revision 1.95
1 /* $NetBSD: awi.c,v 1.95 2019/02/05 06:17:02 msaitoh 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 1.95 2019/02/05 06:17:02 msaitoh Exp $"); 82 83 #include "opt_inet.h" 84 85 #include <sys/param.h> 86 #include <sys/systm.h> 87 #include <sys/kernel.h> 88 #include <sys/mbuf.h> 89 #include <sys/malloc.h> 90 #include <sys/proc.h> 91 #include <sys/socket.h> 92 #include <sys/sockio.h> 93 #include <sys/errno.h> 94 #include <sys/endian.h> 95 #include <sys/device.h> 96 97 #include <net/if.h> 98 #include <net/if_dl.h> 99 #include <net/if_ether.h> 100 #include <net/if_media.h> 101 #include <net/if_llc.h> 102 103 #include <net80211/ieee80211_netbsd.h> 104 #include <net80211/ieee80211_var.h> 105 106 #include <net/bpf.h> 107 108 #include <sys/cpu.h> 109 #include <sys/bus.h> 110 111 #include <dev/ic/am79c930reg.h> 112 #include <dev/ic/am79c930var.h> 113 #include <dev/ic/awireg.h> 114 #include <dev/ic/awivar.h> 115 116 static void awi_softintr(void *); 117 static int awi_init(struct ifnet *); 118 static void awi_stop(struct ifnet *, int); 119 static void awi_start(struct ifnet *); 120 static void awi_watchdog(struct ifnet *); 121 static int awi_ioctl(struct ifnet *, u_long, void *); 122 static int awi_media_change(struct ifnet *); 123 static void awi_media_status(struct ifnet *, struct ifmediareq *); 124 static int awi_mode_init(struct awi_softc *); 125 static void awi_rx_int(struct awi_softc *); 126 static void awi_tx_int(struct awi_softc *); 127 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 128 static int awi_hw_init(struct awi_softc *); 129 static int awi_init_mibs(struct awi_softc *); 130 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 131 static int awi_cmd(struct awi_softc *, u_int8_t, int); 132 static int awi_cmd_wait(struct awi_softc *); 133 static void awi_cmd_done(struct awi_softc *); 134 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 135 static int awi_lock(struct awi_softc *); 136 static void awi_unlock(struct awi_softc *); 137 static int awi_intr_lock(struct awi_softc *); 138 static void awi_intr_unlock(struct awi_softc *); 139 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 140 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 141 struct ieee80211_node *, int, int, u_int32_t); 142 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 143 int); 144 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 145 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 146 147 /* unaligned little endian access */ 148 #define LE_READ_2(p) \ 149 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 150 #define LE_READ_4(p) \ 151 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 152 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 153 #define LE_WRITE_2(p, v) \ 154 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 155 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 156 #define LE_WRITE_4(p, v) \ 157 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 158 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff)), \ 159 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 160 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 161 162 static const struct awi_chanset awi_chanset[] = { 163 /* PHY type domain min max def */ 164 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 165 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 166 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 167 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 168 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 169 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 170 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 171 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 172 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 173 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 174 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 175 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 176 { 0, 0, 0, 0, 0 } 177 }; 178 179 #ifdef AWI_DEBUG 180 int awi_debug = 0; 181 182 #define DPRINTF(X) if (awi_debug) printf X 183 #define DPRINTF2(X) if (awi_debug > 1) printf X 184 #else 185 #define DPRINTF(X) 186 #define DPRINTF2(X) 187 #endif 188 189 int 190 awi_attach(struct awi_softc *sc) 191 { 192 struct ieee80211com *ic = &sc->sc_ic; 193 struct ifnet *ifp = &sc->sc_if; 194 int s, i, error, nrate; 195 int mword; 196 enum ieee80211_phymode mode; 197 198 s = splnet(); 199 sc->sc_busy = 1; 200 sc->sc_attached = 0; 201 sc->sc_substate = AWI_ST_NONE; 202 sc->sc_soft_ih = softint_establish(SOFTINT_NET, awi_softintr, sc); 203 if (sc->sc_soft_ih == NULL) { 204 config_deactivate(sc->sc_dev); 205 splx(s); 206 return ENOMEM; 207 } 208 if ((error = awi_hw_init(sc)) != 0) { 209 config_deactivate(sc->sc_dev); 210 splx(s); 211 return error; 212 } 213 error = awi_init_mibs(sc); 214 if (error != 0) { 215 config_deactivate(sc->sc_dev); 216 splx(s); 217 return error; 218 } 219 ifp->if_softc = sc; 220 ifp->if_flags = 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 awi_stop(ifp, 1); 307 308 while (sc->sc_sleep_cnt > 0) { 309 wakeup(sc); 310 (void)tsleep(sc, PWAIT, "awidet", 1); 311 } 312 sc->sc_attached = 0; 313 ieee80211_ifdetach(ic); 314 if_detach(ifp); 315 shutdownhook_disestablish(sc->sc_sdhook); 316 powerhook_disestablish(sc->sc_powerhook); 317 softint_disestablish(sc->sc_soft_ih); 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); 326 327 switch (act) { 328 case DVACT_DEACTIVATE: 329 if_deactivate(&sc->sc_if); 330 return 0; 331 default: 332 return EOPNOTSUPP; 333 } 334 } 335 336 void 337 awi_power(int why, void *arg) 338 { 339 struct awi_softc *sc = arg; 340 struct ifnet *ifp = &sc->sc_if; 341 int s; 342 int ocansleep; 343 344 DPRINTF(("awi_power: %d\n", why)); 345 s = splnet(); 346 ocansleep = sc->sc_cansleep; 347 sc->sc_cansleep = 0; 348 switch (why) { 349 case PWR_SUSPEND: 350 case PWR_STANDBY: 351 awi_stop(ifp, 1); 352 break; 353 case PWR_RESUME: 354 if (ifp->if_flags & IFF_UP) { 355 awi_init(ifp); 356 awi_softintr(sc); /* make sure */ 357 } 358 break; 359 case PWR_SOFTSUSPEND: 360 case PWR_SOFTSTANDBY: 361 case PWR_SOFTRESUME: 362 break; 363 } 364 sc->sc_cansleep = ocansleep; 365 splx(s); 366 } 367 368 void 369 awi_shutdown(void *arg) 370 { 371 struct awi_softc *sc = arg; 372 struct ifnet *ifp = &sc->sc_if; 373 374 if (sc->sc_attached) 375 awi_stop(ifp, 1); 376 } 377 378 int 379 awi_intr(void *arg) 380 { 381 struct awi_softc *sc = arg; 382 383 if (!sc->sc_enabled || !sc->sc_enab_intr || 384 !device_is_active(sc->sc_dev)) { 385 DPRINTF(("awi_intr: stray interrupt: " 386 "enabled %d enab_intr %d invalid %d\n", 387 sc->sc_enabled, sc->sc_enab_intr, 388 !device_is_active(sc->sc_dev))); 389 return 0; 390 } 391 392 softint_schedule(sc->sc_soft_ih); 393 return 1; 394 } 395 396 static void 397 awi_softintr(void *arg) 398 { 399 struct awi_softc *sc = arg; 400 u_int16_t status; 401 int ocansleep; 402 int s; 403 #ifdef AWI_DEBUG 404 static const char *intname[] = { 405 "CMD", "RX", "TX", "SCAN_CMPLT", 406 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 407 "TXDATA", "TXBCAST", "TXPS", "TXCF", 408 "TXMGT", "#13", "RXDATA", "RXMGT" 409 }; 410 #endif 411 412 s = splnet(); 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 (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 if (status & AWI_INT_RX) 447 awi_rx_int(sc); 448 if (status & AWI_INT_TX) 449 awi_tx_int(sc); 450 if (status & AWI_INT_CMD) 451 awi_cmd_done(sc); 452 if (status & AWI_INT_SCAN_CMPLT) { 453 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 454 sc->sc_substate == AWI_ST_NONE) 455 ieee80211_next_scan(&sc->sc_ic); 456 } 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 splx(s); 463 } 464 465 466 static int 467 awi_init(struct ifnet *ifp) 468 { 469 struct awi_softc *sc = ifp->if_softc; 470 struct ieee80211com *ic = &sc->sc_ic; 471 struct ieee80211_node *ni = ic->ic_bss; 472 struct ieee80211_rateset *rs; 473 int error, rate, i; 474 475 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 476 if (sc->sc_enabled) { 477 awi_stop(ifp, 0); 478 } else { 479 if (sc->sc_enable) 480 (*sc->sc_enable)(sc); 481 sc->sc_enabled = 1; 482 if ((error = awi_hw_init(sc)) != 0) { 483 if (sc->sc_disable) 484 (*sc->sc_disable)(sc); 485 sc->sc_enabled = 0; 486 return error; 487 } 488 } 489 ic->ic_state = IEEE80211_S_INIT; 490 491 ic->ic_flags &= ~IEEE80211_F_IBSSON; 492 switch (ic->ic_opmode) { 493 case IEEE80211_M_STA: 494 sc->sc_mib_local.Network_Mode = 1; 495 sc->sc_mib_local.Acting_as_AP = 0; 496 break; 497 case IEEE80211_M_IBSS: 498 ic->ic_flags |= IEEE80211_F_IBSSON; 499 /* FALLTHRU */ 500 case IEEE80211_M_AHDEMO: 501 sc->sc_mib_local.Network_Mode = 0; 502 sc->sc_mib_local.Acting_as_AP = 0; 503 break; 504 case IEEE80211_M_HOSTAP: 505 sc->sc_mib_local.Network_Mode = 1; 506 sc->sc_mib_local.Acting_as_AP = 1; 507 break; 508 case IEEE80211_M_MONITOR: 509 return ENODEV; 510 } 511 #if 0 512 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 513 #endif 514 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 515 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 516 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 517 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 518 ic->ic_des_esslen); 519 520 /* configure basic rate */ 521 if (ic->ic_phytype == IEEE80211_T_FH) 522 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 523 else 524 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 525 if (ic->ic_fixed_rate != -1) { 526 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 527 } else { 528 rate = 0; 529 for (i = 0; i < rs->rs_nrates; i++) { 530 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 531 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 532 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 533 } 534 } 535 rate *= 5; 536 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 537 538 if ((error = awi_mode_init(sc)) != 0) { 539 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 540 awi_stop(ifp, 1); 541 return error; 542 } 543 544 /* start transmitter */ 545 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 546 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 547 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 548 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 549 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 550 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 551 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 552 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 553 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 554 awi_write_4(sc, AWI_CA_TX_MGT, 0); 555 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 556 awi_write_4(sc, AWI_CA_TX_PS, 0); 557 awi_write_4(sc, AWI_CA_TX_CF, 0); 558 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 559 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 560 awi_stop(ifp, 1); 561 return error; 562 } 563 564 /* start receiver */ 565 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 566 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 567 awi_stop(ifp, 1); 568 return error; 569 } 570 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 571 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 572 573 ifp->if_flags |= IFF_RUNNING; 574 ifp->if_flags &= ~IFF_OACTIVE; 575 ic->ic_state = IEEE80211_S_INIT; 576 577 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 578 ic->ic_opmode == IEEE80211_M_HOSTAP) { 579 ni->ni_chan = ic->ic_ibss_chan; 580 ni->ni_intval = ic->ic_lintval; 581 ni->ni_rssi = 0; 582 ni->ni_rstamp = 0; 583 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 584 ni->ni_rates = 585 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 586 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 587 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 588 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 589 ni->ni_esslen = ic->ic_des_esslen; 590 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 591 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 592 if (ic->ic_phytype == IEEE80211_T_FH) { 593 ni->ni_fhdwell = 200; /* XXX */ 594 ni->ni_fhindex = 1; 595 } 596 } else { 597 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 598 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 599 ni->ni_esslen = 0; 600 } 601 if (ic->ic_flags & IEEE80211_F_PRIVACY) 602 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 603 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 604 ic->ic_flags |= IEEE80211_F_SIBSS; 605 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 606 sc->sc_substate = AWI_ST_NONE; 607 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 608 } else { 609 /* XXX check sc->sc_cur_chan */ 610 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 611 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 612 } 613 return 0; 614 } 615 616 static void 617 awi_stop(struct ifnet *ifp, int disable) 618 { 619 struct awi_softc *sc = ifp->if_softc; 620 621 if (!sc->sc_enabled) 622 return; 623 624 DPRINTF(("awi_stop(%d)\n", disable)); 625 626 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 627 628 if (device_is_active(sc->sc_dev)) { 629 if (sc->sc_cmd_inprog) 630 (void)awi_cmd_wait(sc); 631 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 632 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 633 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 634 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 635 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 636 awi_write_1(sc, AWI_CA_FTX_PS, 0); 637 awi_write_1(sc, AWI_CA_FTX_CF, 0); 638 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 639 } 640 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 641 ifp->if_timer = 0; 642 sc->sc_tx_timer = sc->sc_rx_timer = 0; 643 if (sc->sc_rxpend != NULL) { 644 m_freem(sc->sc_rxpend); 645 sc->sc_rxpend = NULL; 646 } 647 IFQ_PURGE(&ifp->if_snd); 648 649 if (disable) { 650 if (device_is_active(sc->sc_dev)) 651 am79c930_gcr_setbits(&sc->sc_chip, 652 AM79C930_GCR_CORESET); 653 if (sc->sc_disable) 654 (*sc->sc_disable)(sc); 655 sc->sc_enabled = 0; 656 } 657 } 658 659 static void 660 awi_start(struct ifnet *ifp) 661 { 662 struct awi_softc *sc = ifp->if_softc; 663 struct ieee80211com *ic = &sc->sc_ic; 664 struct ether_header *eh; 665 struct ieee80211_node *ni; 666 struct ieee80211_frame *wh; 667 struct mbuf *m, *m0; 668 int len, dowep; 669 u_int32_t txd, frame, ntxd; 670 u_int8_t rate; 671 672 if (!sc->sc_enabled || !device_is_active(sc->sc_dev)) 673 return; 674 675 for (;;) { 676 txd = sc->sc_txnext; 677 IF_POLL(&ic->ic_mgtq, m0); 678 dowep = 0; 679 if (m0 != NULL) { 680 len = m0->m_pkthdr.len; 681 if (awi_next_txd(sc, len, &frame, &ntxd)) { 682 ifp->if_flags |= IFF_OACTIVE; 683 break; 684 } 685 IF_DEQUEUE(&ic->ic_mgtq, m0); 686 ni = M_GETCTX(m0, struct ieee80211_node *); 687 } else { 688 if (ic->ic_state != IEEE80211_S_RUN) 689 break; 690 IFQ_POLL(&ifp->if_snd, m0); 691 if (m0 == NULL) 692 break; 693 /* 694 * Need to calculate the real length to determine 695 * if the transmit buffer has a room for the packet. 696 */ 697 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 698 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 699 len += sizeof(struct llc) - 700 sizeof(struct ether_header); 701 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 702 dowep = 1; 703 len += IEEE80211_WEP_IVLEN + 704 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 705 } 706 if (awi_next_txd(sc, len, &frame, &ntxd)) { 707 ifp->if_flags |= IFF_OACTIVE; 708 break; 709 } 710 IFQ_DEQUEUE(&ifp->if_snd, m0); 711 ifp->if_opackets++; 712 bpf_mtap(ifp, m0, BPF_D_OUT); 713 eh = mtod(m0, struct ether_header *); 714 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 715 if (ni == NULL) { 716 ifp->if_oerrors++; 717 continue; 718 } 719 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 720 m0 = awi_ether_encap(sc, m0); 721 else { 722 m0 = ieee80211_encap(ic, m0, ni); 723 } 724 if (m0 == NULL) { 725 ieee80211_free_node(ni); 726 ifp->if_oerrors++; 727 continue; 728 } 729 wh = mtod(m0, struct ieee80211_frame *); 730 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 731 (ic->ic_opmode == IEEE80211_M_HOSTAP || 732 ic->ic_opmode == IEEE80211_M_IBSS) && 733 sc->sc_adhoc_ap == 0 && 734 (ifp->if_flags & IFF_LINK0) == 0 && 735 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 736 IEEE80211_FC0_TYPE_DATA) { 737 m_freem(m0); 738 ieee80211_free_node(ni); 739 ifp->if_oerrors++; 740 continue; 741 } 742 } 743 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 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 || !device_is_active(sc->sc_dev)) 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); /* in softint */ 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_set_rcvif(m, 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 awi_drvstate(sc, AWI_DRV_RESET); 1262 1263 /* reset firmware */ 1264 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1265 DELAY(100); 1266 awi_write_1(sc, AWI_SELFTEST, 0); 1267 awi_write_1(sc, AWI_CMD, 0); 1268 awi_write_1(sc, AWI_BANNER, 0); 1269 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1270 DELAY(100); 1271 1272 /* wait for selftest completion */ 1273 for (i = 0; ; i++) { 1274 if (!device_is_active(sc->sc_dev)) 1275 return ENXIO; 1276 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1277 printf("%s: failed to complete selftest (timeout)\n", 1278 sc->sc_if.if_xname); 1279 return ENXIO; 1280 } 1281 status = awi_read_1(sc, AWI_SELFTEST); 1282 if ((status & 0xf0) == 0xf0) 1283 break; 1284 if (sc->sc_cansleep) { 1285 sc->sc_sleep_cnt++; 1286 (void)tsleep(sc, PWAIT, "awitst", 1); 1287 sc->sc_sleep_cnt--; 1288 } else { 1289 DELAY(1000*1000/hz); 1290 } 1291 } 1292 if (status != AWI_SELFTEST_PASSED) { 1293 printf("%s: failed to complete selftest (code %x)\n", 1294 sc->sc_if.if_xname, status); 1295 return ENXIO; 1296 } 1297 1298 /* check banner to confirm firmware write it */ 1299 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1300 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1301 printf("%s: failed to complete selftest (bad banner)\n", 1302 sc->sc_if.if_xname); 1303 for (i = 0; i < AWI_BANNER_LEN; i++) 1304 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1305 printf("\n"); 1306 return ENXIO; 1307 } 1308 1309 /* initializing interrupt */ 1310 sc->sc_enab_intr = 1; 1311 error = awi_intr_lock(sc); 1312 if (error) 1313 return error; 1314 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1315 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1316 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1317 awi_write_1(sc, AWI_INTMASK2, 0); 1318 awi_write_1(sc, AWI_INTSTAT, 0); 1319 awi_write_1(sc, AWI_INTSTAT2, 0); 1320 awi_intr_unlock(sc); 1321 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1322 1323 /* issuing interface test command */ 1324 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1325 if (error) { 1326 printf("%s: failed to complete selftest", 1327 sc->sc_if.if_xname); 1328 if (error == ENXIO) 1329 printf(" (no hardware)\n"); 1330 else if (error != EWOULDBLOCK) 1331 printf(" (error %d)\n", error); 1332 else if (sc->sc_cansleep) 1333 printf(" (lost interrupt)\n"); 1334 else 1335 printf(" (command timeout)\n"); 1336 return error; 1337 } 1338 1339 /* Initialize VBM */ 1340 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1341 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1342 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1343 return 0; 1344 } 1345 1346 /* 1347 * Extract the factory default MIB value from firmware and assign the driver 1348 * default value. 1349 * Called once at attaching the interface. 1350 */ 1351 1352 static int 1353 awi_init_mibs(struct awi_softc *sc) 1354 { 1355 int chan, i, error; 1356 struct ieee80211com *ic = &sc->sc_ic; 1357 const struct awi_chanset *cs; 1358 1359 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1360 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1361 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1362 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1363 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1364 printf("%s: failed to get default mib value (error %d)\n", 1365 sc->sc_if.if_xname, error); 1366 return error; 1367 } 1368 1369 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1370 for (cs = awi_chanset; ; cs++) { 1371 if (cs->cs_type == 0) { 1372 printf("%s: failed to set available channel\n", 1373 sc->sc_if.if_xname); 1374 return ENXIO; 1375 } 1376 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1377 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1378 break; 1379 } 1380 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1381 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1382 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1383 setbit(sc->sc_ic.ic_chan_avail, chan); 1384 /* XXX for FHSS, does frequency matter? */ 1385 ic->ic_channels[chan].ic_freq = 0; 1386 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1387 /* 1388 * According to the IEEE 802.11 specification, 1389 * hop pattern parameter for FH phy should be 1390 * incremented by 3 for given hop chanset, i.e., 1391 * the chanset parameter is calculated for given 1392 * hop patter. However, BayStack 650 Access Points 1393 * apparently use fixed hop chanset parameter value 1394 * 1 for any hop pattern. So we also try this 1395 * combination of hop chanset and pattern. 1396 */ 1397 chan = IEEE80211_FH_CHAN(1, i); 1398 setbit(sc->sc_ic.ic_chan_avail, chan); 1399 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1400 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1401 } 1402 } else { 1403 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1404 setbit(sc->sc_ic.ic_chan_avail, i); 1405 ic->ic_channels[i].ic_freq = 1406 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1407 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1408 } 1409 } 1410 sc->sc_cur_chan = cs->cs_def; 1411 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1412 1413 sc->sc_mib_local.Fragmentation_Dis = 1; 1414 sc->sc_mib_local.Add_PLCP_Dis = 0; 1415 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1416 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1417 sc->sc_mib_local.Re_Assembly_Dis = 1; 1418 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1419 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1420 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1421 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1422 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1423 sc->sc_mib_local.Network_Mode = 1; 1424 sc->sc_mib_local.PWD_Lvl = 0; 1425 sc->sc_mib_local.CFP_Mode = 0; 1426 1427 /* allocate buffers */ 1428 sc->sc_txbase = AWI_BUFFERS; 1429 sc->sc_txend = sc->sc_txbase + 1430 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1431 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1432 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1433 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1434 sc->sc_txend - sc->sc_txbase); 1435 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1436 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1437 AWI_BUFFERS_END - sc->sc_txend); 1438 sc->sc_mib_local.Acting_as_AP = 0; 1439 sc->sc_mib_local.Fill_CFP = 0; 1440 1441 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1442 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1443 1444 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1445 sc->sc_mib_mgt.aDTIM_Period = 1; 1446 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1447 return 0; 1448 } 1449 1450 static int 1451 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1452 { 1453 int error; 1454 u_int8_t size, *ptr; 1455 1456 switch (mib) { 1457 case AWI_MIB_LOCAL: 1458 ptr = (u_int8_t *)&sc->sc_mib_local; 1459 size = sizeof(sc->sc_mib_local); 1460 break; 1461 case AWI_MIB_ADDR: 1462 ptr = (u_int8_t *)&sc->sc_mib_addr; 1463 size = sizeof(sc->sc_mib_addr); 1464 break; 1465 case AWI_MIB_MAC: 1466 ptr = (u_int8_t *)&sc->sc_mib_mac; 1467 size = sizeof(sc->sc_mib_mac); 1468 break; 1469 case AWI_MIB_STAT: 1470 ptr = (u_int8_t *)&sc->sc_mib_stat; 1471 size = sizeof(sc->sc_mib_stat); 1472 break; 1473 case AWI_MIB_MGT: 1474 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1475 size = sizeof(sc->sc_mib_mgt); 1476 break; 1477 case AWI_MIB_PHY: 1478 ptr = (u_int8_t *)&sc->sc_mib_phy; 1479 size = sizeof(sc->sc_mib_phy); 1480 break; 1481 default: 1482 return EINVAL; 1483 } 1484 if (sc->sc_cmd_inprog) { 1485 if ((error = awi_cmd_wait(sc)) != 0) { 1486 if (error == EWOULDBLOCK) { 1487 DPRINTF(("awi_mib: cmd %d inprog", 1488 sc->sc_cmd_inprog)); 1489 } 1490 return error; 1491 } 1492 } 1493 sc->sc_cmd_inprog = cmd; 1494 if (cmd == AWI_CMD_SET_MIB) 1495 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1496 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1497 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1498 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1499 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1500 return error; 1501 if (cmd == AWI_CMD_GET_MIB) { 1502 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1503 #ifdef AWI_DEBUG 1504 if (awi_debug) { 1505 int i; 1506 1507 printf("awi_mib: #%d:", mib); 1508 for (i = 0; i < size; i++) 1509 printf(" %02x", ptr[i]); 1510 printf("\n"); 1511 } 1512 #endif 1513 } 1514 return 0; 1515 } 1516 1517 static int 1518 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1519 { 1520 u_int8_t status; 1521 int error = 0; 1522 #ifdef AWI_DEBUG 1523 static const char *cmdname[] = { 1524 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1525 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1526 }; 1527 #endif 1528 1529 #ifdef AWI_DEBUG 1530 if (awi_debug > 1) { 1531 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1532 printf("awi_cmd: #%d", cmd); 1533 else 1534 printf("awi_cmd: %s", cmdname[cmd]); 1535 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1536 } 1537 #endif 1538 sc->sc_cmd_inprog = cmd; 1539 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1540 awi_write_1(sc, AWI_CMD, cmd); 1541 if (wflag == AWI_NOWAIT) 1542 return EINPROGRESS; 1543 if ((error = awi_cmd_wait(sc)) != 0) 1544 return error; 1545 status = awi_read_1(sc, AWI_CMD_STATUS); 1546 awi_write_1(sc, AWI_CMD, 0); 1547 switch (status) { 1548 case AWI_STAT_OK: 1549 break; 1550 case AWI_STAT_BADPARM: 1551 return EINVAL; 1552 default: 1553 printf("%s: command %d failed %x\n", 1554 sc->sc_if.if_xname, cmd, status); 1555 return ENXIO; 1556 } 1557 return 0; 1558 } 1559 1560 static int 1561 awi_cmd_wait(struct awi_softc *sc) 1562 { 1563 int i, error = 0; 1564 1565 i = 0; 1566 while (sc->sc_cmd_inprog) { 1567 if (!device_is_active(sc->sc_dev)) 1568 return ENXIO; 1569 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1570 printf("%s: failed to access hardware\n", 1571 sc->sc_if.if_xname); 1572 config_deactivate(sc->sc_dev); 1573 return ENXIO; 1574 } 1575 if (sc->sc_cansleep) { 1576 sc->sc_sleep_cnt++; 1577 error = tsleep(sc, PWAIT, "awicmd", 1578 AWI_CMD_TIMEOUT*hz/1000); 1579 sc->sc_sleep_cnt--; 1580 } else { 1581 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1582 awi_cmd_done(sc); 1583 break; 1584 } 1585 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1586 error = EWOULDBLOCK; 1587 else 1588 DELAY(10); 1589 } 1590 if (error) 1591 break; 1592 } 1593 if (error) { 1594 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1595 sc->sc_cmd_inprog, error)); 1596 } 1597 return error; 1598 } 1599 1600 static void 1601 awi_cmd_done(struct awi_softc *sc) 1602 { 1603 u_int8_t cmd, status; 1604 1605 status = awi_read_1(sc, AWI_CMD_STATUS); 1606 if (status == AWI_STAT_IDLE) 1607 return; /* stray interrupt */ 1608 1609 cmd = sc->sc_cmd_inprog; 1610 sc->sc_cmd_inprog = 0; 1611 wakeup(sc); 1612 awi_write_1(sc, AWI_CMD, 0); 1613 1614 if (status != AWI_STAT_OK) { 1615 printf("%s: command %d failed %x\n", 1616 sc->sc_if.if_xname, cmd, status); 1617 sc->sc_substate = AWI_ST_NONE; 1618 return; 1619 } 1620 if (sc->sc_substate != AWI_ST_NONE) 1621 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1622 } 1623 1624 static int 1625 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1626 { 1627 u_int32_t txd, ntxd, frame; 1628 1629 txd = sc->sc_txnext; 1630 frame = txd + AWI_TXD_SIZE; 1631 if (frame + len > sc->sc_txend) 1632 frame = sc->sc_txbase; 1633 ntxd = frame + len; 1634 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1635 ntxd = sc->sc_txbase; 1636 *framep = frame; 1637 *ntxdp = ntxd; 1638 /* 1639 * Determine if there are any room in ring buffer. 1640 * --- send wait, === new data, +++ conflict (ENOBUFS) 1641 * base........................end 1642 * done----txd=====ntxd OK 1643 * --txd=====done++++ntxd-- full 1644 * --txd=====ntxd done-- OK 1645 * ==ntxd done----txd=== OK 1646 * ==done++++ntxd----txd=== full 1647 * ++ntxd txd=====done++ full 1648 */ 1649 if (txd < ntxd) { 1650 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1651 return ENOBUFS; 1652 } else { 1653 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1654 return ENOBUFS; 1655 } 1656 return 0; 1657 } 1658 1659 static int 1660 awi_lock(struct awi_softc *sc) 1661 { 1662 int error = 0; 1663 1664 if (curlwp == NULL) 1665 { 1666 /* 1667 * XXX 1668 * Though driver ioctl should be called with context, 1669 * KAME ipv6 stack calls ioctl in interrupt for now. 1670 * We simply abort the request if there are other 1671 * ioctl requests in progress. 1672 */ 1673 if (sc->sc_busy) { 1674 if (!device_is_active(sc->sc_dev)) 1675 return ENXIO; 1676 return EWOULDBLOCK; 1677 } 1678 sc->sc_busy = 1; 1679 sc->sc_cansleep = 0; 1680 return 0; 1681 } 1682 while (sc->sc_busy) { 1683 if (!device_is_active(sc->sc_dev)) 1684 return ENXIO; 1685 sc->sc_sleep_cnt++; 1686 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1687 sc->sc_sleep_cnt--; 1688 if (error) 1689 return error; 1690 } 1691 sc->sc_busy = 1; 1692 sc->sc_cansleep = 1; 1693 return 0; 1694 } 1695 1696 static void 1697 awi_unlock(struct awi_softc *sc) 1698 { 1699 sc->sc_busy = 0; 1700 sc->sc_cansleep = 0; 1701 if (sc->sc_sleep_cnt) 1702 wakeup(sc); 1703 } 1704 1705 static int 1706 awi_intr_lock(struct awi_softc *sc) 1707 { 1708 u_int8_t status; 1709 int i, retry; 1710 1711 status = 1; 1712 for (retry = 0; retry < 10; retry++) { 1713 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1714 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1715 break; 1716 DELAY(5); 1717 } 1718 if (status != 0) 1719 break; 1720 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1721 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1722 break; 1723 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1724 } 1725 if (status != 0) { 1726 printf("%s: failed to lock interrupt\n", 1727 sc->sc_if.if_xname); 1728 return ENXIO; 1729 } 1730 return 0; 1731 } 1732 1733 static void 1734 awi_intr_unlock(struct awi_softc *sc) 1735 { 1736 1737 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1738 } 1739 1740 static int 1741 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1742 { 1743 struct ifnet *ifp = ic->ic_ifp; 1744 struct awi_softc *sc = ifp->if_softc; 1745 struct ieee80211_node *ni; 1746 int error; 1747 u_int8_t newmode; 1748 enum ieee80211_state ostate; 1749 #ifdef AWI_DEBUG 1750 static const char *stname[] = 1751 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1752 static const char *substname[] = 1753 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1754 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1755 #endif /* AWI_DEBUG */ 1756 1757 ostate = ic->ic_state; 1758 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1759 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1760 1761 /* set LED */ 1762 switch (nstate) { 1763 case IEEE80211_S_INIT: 1764 awi_drvstate(sc, AWI_DRV_RESET); 1765 break; 1766 case IEEE80211_S_SCAN: 1767 if (ic->ic_opmode == IEEE80211_M_IBSS || 1768 ic->ic_opmode == IEEE80211_M_AHDEMO) 1769 awi_drvstate(sc, AWI_DRV_ADHSC); 1770 else 1771 awi_drvstate(sc, AWI_DRV_INFSY); 1772 break; 1773 case IEEE80211_S_AUTH: 1774 awi_drvstate(sc, AWI_DRV_INFSY); 1775 break; 1776 case IEEE80211_S_ASSOC: 1777 awi_drvstate(sc, AWI_DRV_INFAUTH); 1778 break; 1779 case IEEE80211_S_RUN: 1780 if (ic->ic_opmode == IEEE80211_M_IBSS || 1781 ic->ic_opmode == IEEE80211_M_AHDEMO) 1782 awi_drvstate(sc, AWI_DRV_ADHSY); 1783 else 1784 awi_drvstate(sc, AWI_DRV_INFASSOC); 1785 break; 1786 } 1787 1788 if (nstate == IEEE80211_S_INIT) { 1789 sc->sc_substate = AWI_ST_NONE; 1790 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1791 return (*sc->sc_newstate)(ic, nstate, arg); 1792 } 1793 1794 /* state transition */ 1795 if (nstate == IEEE80211_S_SCAN) { 1796 /* SCAN substate */ 1797 if (sc->sc_substate == AWI_ST_NONE) { 1798 sc->sc_nstate = nstate; /* next state in transition */ 1799 sc->sc_substate = AWI_ST_SCAN_INIT; 1800 } 1801 switch (sc->sc_substate) { 1802 case AWI_ST_SCAN_INIT: 1803 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1804 switch (ostate) { 1805 case IEEE80211_S_RUN: 1806 /* beacon miss */ 1807 if (ifp->if_flags & IFF_DEBUG) 1808 printf("%s: no recent beacons from %s;" 1809 " rescanning\n", 1810 ifp->if_xname, 1811 ether_sprintf(ic->ic_bss->ni_bssid)); 1812 /* FALLTHRU */ 1813 case IEEE80211_S_AUTH: 1814 case IEEE80211_S_ASSOC: 1815 case IEEE80211_S_INIT: 1816 ieee80211_begin_scan(ic, 1); 1817 /* FALLTHRU */ 1818 case IEEE80211_S_SCAN: 1819 /* scan next */ 1820 break; 1821 } 1822 if (ic->ic_flags & IEEE80211_F_ASCAN) 1823 newmode = AWI_SCAN_ACTIVE; 1824 else 1825 newmode = AWI_SCAN_PASSIVE; 1826 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1827 sc->sc_mib_mgt.aScan_Mode = newmode; 1828 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1829 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1830 break; 1831 } 1832 /* FALLTHRU */ 1833 case AWI_ST_SCAN_SETMIB: 1834 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1835 if (sc->sc_cmd_inprog) { 1836 if ((error = awi_cmd_wait(sc)) != 0) 1837 break; 1838 } 1839 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1840 ni = ic->ic_bss; 1841 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1842 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1843 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1844 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1845 awi_write_1(sc, AWI_CA_SCAN_SET, 1846 IEEE80211_FH_CHANSET( 1847 ieee80211_chan2ieee(ic, ni->ni_chan))); 1848 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1849 IEEE80211_FH_CHANPAT( 1850 ieee80211_chan2ieee(ic, ni->ni_chan))); 1851 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1852 } else { 1853 awi_write_1(sc, AWI_CA_SCAN_SET, 1854 ieee80211_chan2ieee(ic, ni->ni_chan)); 1855 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1856 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1857 } 1858 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1859 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1860 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1861 != 0) 1862 break; 1863 /* FALLTHRU */ 1864 case AWI_ST_SCAN_SCCMD: 1865 ic->ic_state = nstate; 1866 sc->sc_substate = AWI_ST_NONE; 1867 error = EINPROGRESS; 1868 break; 1869 default: 1870 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1871 stname[nstate], substname[sc->sc_substate])); 1872 sc->sc_substate = AWI_ST_NONE; 1873 error = EIO; 1874 break; 1875 } 1876 goto out; 1877 } 1878 1879 if (ostate == IEEE80211_S_SCAN) { 1880 /* set SSID and channel */ 1881 /* substate */ 1882 if (sc->sc_substate == AWI_ST_NONE) { 1883 sc->sc_nstate = nstate; /* next state in transition */ 1884 sc->sc_substate = AWI_ST_SUB_INIT; 1885 } 1886 ni = ic->ic_bss; 1887 switch (sc->sc_substate) { 1888 case AWI_ST_SUB_INIT: 1889 sc->sc_substate = AWI_ST_SUB_SETSS; 1890 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1891 ni->ni_bssid); 1892 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1893 AWI_ESS_ID_SIZE); 1894 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1895 IEEE80211_ELEMID_SSID; 1896 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1897 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1898 ni->ni_essid, ni->ni_esslen); 1899 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1900 ni->ni_intval); 1901 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1902 AWI_NOWAIT)) != 0) 1903 break; 1904 /* FALLTHRU */ 1905 case AWI_ST_SUB_SETSS: 1906 sc->sc_substate = AWI_ST_SUB_SYNC; 1907 if (sc->sc_cmd_inprog) { 1908 if ((error = awi_cmd_wait(sc)) != 0) 1909 break; 1910 } 1911 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1912 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1913 awi_write_1(sc, AWI_CA_SYNC_SET, 1914 IEEE80211_FH_CHANSET( 1915 ieee80211_chan2ieee(ic, ni->ni_chan))); 1916 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1917 IEEE80211_FH_CHANPAT( 1918 ieee80211_chan2ieee(ic, ni->ni_chan))); 1919 awi_write_1(sc, AWI_CA_SYNC_IDX, 1920 ni->ni_fhindex); 1921 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1922 ni->ni_fhdwell); 1923 } else { 1924 awi_write_1(sc, AWI_CA_SYNC_SET, 1925 ieee80211_chan2ieee(ic, ni->ni_chan)); 1926 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1927 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1928 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1929 } 1930 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1931 memset(&ni->ni_tstamp, 0, 1932 sizeof(ni->ni_tstamp)); 1933 ni->ni_rstamp = 0; 1934 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1935 } else 1936 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1937 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1938 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1939 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 1940 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1941 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1942 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1943 != 0) 1944 break; 1945 /* FALLTHRU */ 1946 case AWI_ST_SUB_SYNC: 1947 sc->sc_substate = AWI_ST_NONE; 1948 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1949 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1950 AWI_MIB_MGT, AWI_WAIT)) != 0) 1951 break; 1952 IEEE80211_ADDR_COPY(ni->ni_bssid, 1953 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1954 } else { 1955 if (nstate == IEEE80211_S_RUN) { 1956 sc->sc_rx_timer = 10; 1957 ifp->if_timer = 1; 1958 } 1959 } 1960 error = 0; 1961 break; 1962 default: 1963 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1964 stname[nstate], substname[sc->sc_substate])); 1965 sc->sc_substate = AWI_ST_NONE; 1966 error = EIO; 1967 break; 1968 } 1969 goto out; 1970 } 1971 1972 sc->sc_substate = AWI_ST_NONE; 1973 1974 return (*sc->sc_newstate)(ic, nstate, arg); 1975 out: 1976 if (error != 0) { 1977 if (error == EINPROGRESS) 1978 error = 0; 1979 return error; 1980 } 1981 return (*sc->sc_newstate)(ic, nstate, arg); 1982 } 1983 1984 static void 1985 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1986 struct ieee80211_node *ni, 1987 int subtype, int rssi, u_int32_t rstamp) 1988 { 1989 struct awi_softc *sc = ic->ic_ifp->if_softc; 1990 1991 /* probe request is handled by hardware */ 1992 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1993 return; 1994 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1995 } 1996 1997 static int 1998 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 1999 int type, int arg) 2000 { 2001 struct awi_softc *sc = ic->ic_ifp->if_softc; 2002 2003 /* probe request is handled by hardware */ 2004 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2005 return 0; 2006 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2007 } 2008 2009 static struct mbuf * 2010 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2011 { 2012 struct ieee80211com *ic = &sc->sc_ic; 2013 struct ieee80211_node *ni = ic->ic_bss; 2014 struct ether_header *eh; 2015 struct ieee80211_frame *wh; 2016 2017 if (m->m_len < sizeof(struct ether_header)) { 2018 m = m_pullup(m, sizeof(struct ether_header)); 2019 if (m == NULL) 2020 return NULL; 2021 } 2022 eh = mtod(m, struct ether_header *); 2023 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2024 if (m == NULL) 2025 return NULL; 2026 wh = mtod(m, struct ieee80211_frame *); 2027 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2028 *(u_int16_t *)wh->i_dur = 0; 2029 *(u_int16_t *)wh->i_seq = 2030 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2031 ni->ni_txseqs[0]++; 2032 if (ic->ic_opmode == IEEE80211_M_IBSS || 2033 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2034 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2035 if (sc->sc_adhoc_ap) 2036 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2037 else 2038 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2039 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2040 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2041 } else { 2042 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2043 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2044 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2045 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2046 } 2047 return m; 2048 } 2049 2050 static struct mbuf * 2051 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2052 { 2053 struct ieee80211com *ic = &sc->sc_ic; 2054 struct ether_header eh; 2055 struct ieee80211_frame wh; 2056 struct llc *llc; 2057 2058 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2059 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2060 if (m == NULL) 2061 return NULL; 2062 } 2063 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2064 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2065 return m; 2066 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2067 m_adj(m, sizeof(eh) - sizeof(*llc)); 2068 if (ic->ic_opmode == IEEE80211_M_IBSS || 2069 ic->ic_opmode == IEEE80211_M_AHDEMO) 2070 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2071 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2072 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2073 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2074 llc->llc_control = LLC_UI; 2075 llc->llc_snap.org_code[0] = 0; 2076 llc->llc_snap.org_code[1] = 0; 2077 llc->llc_snap.org_code[2] = 0; 2078 llc->llc_snap.ether_type = eh.ether_type; 2079 return m; 2080 } 2081
Indexes created Sun Oct 19 02:09:48 GMT 2025