awi.c revision 1.78.4.5
1 /* $NetBSD: awi.c,v 1.78.4.5 2010/03/11 15:03:29 yamt 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 1.78.4.5 2010/03/11 15:03:29 yamt 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 int awi_init(struct ifnet *); 117 static void awi_stop(struct ifnet *, int); 118 static void awi_start(struct ifnet *); 119 static void awi_watchdog(struct ifnet *); 120 static int awi_ioctl(struct ifnet *, u_long, void *); 121 static int awi_media_change(struct ifnet *); 122 static void awi_media_status(struct ifnet *, struct ifmediareq *); 123 static int awi_mode_init(struct awi_softc *); 124 static void awi_rx_int(struct awi_softc *); 125 static void awi_tx_int(struct awi_softc *); 126 static struct mbuf *awi_devget(struct awi_softc *, u_int32_t, u_int16_t); 127 static int awi_hw_init(struct awi_softc *); 128 static int awi_init_mibs(struct awi_softc *); 129 static int awi_mib(struct awi_softc *, u_int8_t, u_int8_t, int); 130 static int awi_cmd(struct awi_softc *, u_int8_t, int); 131 static int awi_cmd_wait(struct awi_softc *); 132 static void awi_cmd_done(struct awi_softc *); 133 static int awi_next_txd(struct awi_softc *, int, u_int32_t *, u_int32_t *); 134 static int awi_lock(struct awi_softc *); 135 static void awi_unlock(struct awi_softc *); 136 static int awi_intr_lock(struct awi_softc *); 137 static void awi_intr_unlock(struct awi_softc *); 138 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 139 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 140 struct ieee80211_node *, int, int, u_int32_t); 141 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 142 int); 143 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 144 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 145 146 /* unaligned little endian access */ 147 #define LE_READ_2(p) \ 148 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8)) 149 #define LE_READ_4(p) \ 150 ((((u_int8_t *)(p))[0] ) | (((u_int8_t *)(p))[1] << 8) | \ 151 (((u_int8_t *)(p))[2] << 16) | (((u_int8_t *)(p))[3] << 24)) 152 #define LE_WRITE_2(p, v) \ 153 ((((u_int8_t *)(p))[0] = (((u_int32_t)(v) ) & 0xff)), \ 154 (((u_int8_t *)(p))[1] = (((u_int32_t)(v) >> 8) & 0xff))) 155 #define LE_WRITE_4(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 (((u_int8_t *)(p))[2] = (((u_int32_t)(v) >> 16) & 0xff)), \ 159 (((u_int8_t *)(p))[3] = (((u_int32_t)(v) >> 24) & 0xff))) 160 161 struct awi_chanset awi_chanset[] = { 162 /* PHY type domain min max def */ 163 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 164 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 165 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 166 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 167 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 168 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 169 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 170 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 171 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 172 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 173 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 174 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 175 { 0, 0, 0, 0, 0 } 176 }; 177 178 #ifdef AWI_DEBUG 179 int awi_debug = 0; 180 181 #define DPRINTF(X) if (awi_debug) printf X 182 #define DPRINTF2(X) if (awi_debug > 1) printf X 183 #else 184 #define DPRINTF(X) 185 #define DPRINTF2(X) 186 #endif 187 188 int 189 awi_attach(struct awi_softc *sc) 190 { 191 struct ieee80211com *ic = &sc->sc_ic; 192 struct ifnet *ifp = &sc->sc_if; 193 int s, i, error, nrate; 194 int mword; 195 enum ieee80211_phymode mode; 196 197 s = splnet(); 198 sc->sc_busy = 1; 199 sc->sc_attached = 0; 200 sc->sc_substate = AWI_ST_NONE; 201 if ((error = awi_hw_init(sc)) != 0) { 202 config_deactivate(&sc->sc_dev); 203 splx(s); 204 return error; 205 } 206 error = awi_init_mibs(sc); 207 if (error != 0) { 208 config_deactivate(&sc->sc_dev); 209 splx(s); 210 return error; 211 } 212 ifp->if_softc = sc; 213 ifp->if_flags = 214 #ifdef IFF_NOTRAILERS 215 IFF_NOTRAILERS | 216 #endif 217 IFF_SIMPLEX | IFF_BROADCAST | IFF_MULTICAST; 218 ifp->if_ioctl = awi_ioctl; 219 ifp->if_start = awi_start; 220 ifp->if_watchdog = awi_watchdog; 221 ifp->if_init = awi_init; 222 ifp->if_stop = awi_stop; 223 IFQ_SET_READY(&ifp->if_snd); 224 memcpy(ifp->if_xname, device_xname(&sc->sc_dev), IFNAMSIZ); 225 226 ic->ic_ifp = ifp; 227 ic->ic_caps = IEEE80211_C_WEP | IEEE80211_C_IBSS | IEEE80211_C_HOSTAP; 228 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 229 ic->ic_phytype = IEEE80211_T_FH; 230 mode = IEEE80211_MODE_FH; 231 } else { 232 ic->ic_phytype = IEEE80211_T_DS; 233 ic->ic_caps |= IEEE80211_C_AHDEMO; 234 mode = IEEE80211_MODE_11B; 235 } 236 ic->ic_opmode = IEEE80211_M_STA; 237 nrate = sc->sc_mib_phy.aSuprt_Data_Rates[1]; 238 memcpy(ic->ic_sup_rates[mode].rs_rates, 239 sc->sc_mib_phy.aSuprt_Data_Rates + 2, nrate); 240 ic->ic_sup_rates[mode].rs_nrates = nrate; 241 IEEE80211_ADDR_COPY(ic->ic_myaddr, sc->sc_mib_addr.aMAC_Address); 242 243 printf("%s: IEEE802.11 %s (firmware %s)\n", ifp->if_xname, 244 (ic->ic_phytype == IEEE80211_T_FH) ? "FH" : "DS", sc->sc_banner); 245 printf("%s: 802.11 address: %s\n", ifp->if_xname, 246 ether_sprintf(ic->ic_myaddr)); 247 248 if_attach(ifp); 249 ieee80211_ifattach(ic); 250 251 sc->sc_newstate = ic->ic_newstate; 252 ic->ic_newstate = awi_newstate; 253 254 sc->sc_recv_mgmt = ic->ic_recv_mgmt; 255 ic->ic_recv_mgmt = awi_recv_mgmt; 256 257 sc->sc_send_mgmt = ic->ic_send_mgmt; 258 ic->ic_send_mgmt = awi_send_mgmt; 259 260 ieee80211_media_init(ic, awi_media_change, awi_media_status); 261 262 /* Melco compatibility mode. */ 263 #define ADD(s, o) ifmedia_add(&ic->ic_media, \ 264 IFM_MAKEWORD(IFM_IEEE80211, (s), (o), 0), 0, NULL) 265 ADD(IFM_AUTO, IFM_FLAG0); 266 267 for (i = 0; i < nrate; i++) { 268 mword = ieee80211_rate2media(ic, 269 ic->ic_sup_rates[mode].rs_rates[i], mode); 270 if (mword == 0) 271 continue; 272 ADD(mword, IFM_FLAG0); 273 } 274 #undef ADD 275 276 if ((sc->sc_sdhook = shutdownhook_establish(awi_shutdown, sc)) == NULL) 277 printf("%s: WARNING: unable to establish shutdown hook\n", 278 ifp->if_xname); 279 if ((sc->sc_powerhook = 280 powerhook_establish(ifp->if_xname, awi_power, sc)) == NULL) 281 printf("%s: WARNING: unable to establish power hook\n", 282 ifp->if_xname); 283 sc->sc_attached = 1; 284 splx(s); 285 286 /* ready to accept ioctl */ 287 awi_unlock(sc); 288 289 return 0; 290 } 291 292 int 293 awi_detach(struct awi_softc *sc) 294 { 295 struct ieee80211com *ic = &sc->sc_ic; 296 struct ifnet *ifp = &sc->sc_if; 297 int s; 298 299 if (!sc->sc_attached) 300 return 0; 301 302 s = splnet(); 303 awi_stop(ifp, 1); 304 305 while (sc->sc_sleep_cnt > 0) { 306 wakeup(sc); 307 (void)tsleep(sc, PWAIT, "awidet", 1); 308 } 309 sc->sc_attached = 0; 310 ieee80211_ifdetach(ic); 311 if_detach(ifp); 312 shutdownhook_disestablish(sc->sc_sdhook); 313 powerhook_disestablish(sc->sc_powerhook); 314 splx(s); 315 return 0; 316 } 317 318 int 319 awi_activate(device_t self, enum devact act) 320 { 321 struct awi_softc *sc = device_private(self); 322 323 switch (act) { 324 case DVACT_DEACTIVATE: 325 if_deactivate(&sc->sc_if); 326 return 0; 327 default: 328 return EOPNOTSUPP; 329 } 330 } 331 332 void 333 awi_power(int why, void *arg) 334 { 335 struct awi_softc *sc = arg; 336 struct ifnet *ifp = &sc->sc_if; 337 int s; 338 int ocansleep; 339 340 DPRINTF(("awi_power: %d\n", why)); 341 s = splnet(); 342 ocansleep = sc->sc_cansleep; 343 sc->sc_cansleep = 0; 344 switch (why) { 345 case PWR_SUSPEND: 346 case PWR_STANDBY: 347 awi_stop(ifp, 1); 348 break; 349 case PWR_RESUME: 350 if (ifp->if_flags & IFF_UP) { 351 awi_init(ifp); 352 (void)awi_intr(sc); /* make sure */ 353 } 354 break; 355 case PWR_SOFTSUSPEND: 356 case PWR_SOFTSTANDBY: 357 case PWR_SOFTRESUME: 358 break; 359 } 360 sc->sc_cansleep = ocansleep; 361 splx(s); 362 } 363 364 void 365 awi_shutdown(void *arg) 366 { 367 struct awi_softc *sc = arg; 368 struct ifnet *ifp = &sc->sc_if; 369 370 if (sc->sc_attached) 371 awi_stop(ifp, 1); 372 } 373 374 int 375 awi_intr(void *arg) 376 { 377 struct awi_softc *sc = arg; 378 u_int16_t status; 379 int handled = 0, ocansleep; 380 #ifdef AWI_DEBUG 381 static const char *intname[] = { 382 "CMD", "RX", "TX", "SCAN_CMPLT", 383 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 384 "TXDATA", "TXBCAST", "TXPS", "TXCF", 385 "TXMGT", "#13", "RXDATA", "RXMGT" 386 }; 387 #endif 388 389 if (!sc->sc_enabled || !sc->sc_enab_intr || 390 !device_is_active(&sc->sc_dev)) { 391 DPRINTF(("awi_intr: stray interrupt: " 392 "enabled %d enab_intr %d invalid %d\n", 393 sc->sc_enabled, sc->sc_enab_intr, 394 !device_is_active(&sc->sc_dev))); 395 return 0; 396 } 397 398 am79c930_gcr_setbits(&sc->sc_chip, 399 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 400 awi_write_1(sc, AWI_DIS_PWRDN, 1); 401 ocansleep = sc->sc_cansleep; 402 sc->sc_cansleep = 0; 403 404 for (;;) { 405 if (awi_intr_lock(sc) != 0) 406 break; 407 status = awi_read_1(sc, AWI_INTSTAT); 408 awi_write_1(sc, AWI_INTSTAT, 0); 409 awi_write_1(sc, AWI_INTSTAT, 0); 410 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 411 awi_write_1(sc, AWI_INTSTAT2, 0); 412 DELAY(10); 413 awi_intr_unlock(sc); 414 if (!sc->sc_cmd_inprog) 415 status &= ~AWI_INT_CMD; /* make sure */ 416 if (status == 0) 417 break; 418 #ifdef AWI_DEBUG 419 if (awi_debug > 1) { 420 int i; 421 422 printf("awi_intr: status 0x%04x", status); 423 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 424 i++) { 425 if (status & (1 << i)) 426 printf(" %s", intname[i]); 427 } 428 printf("\n"); 429 } 430 #endif 431 handled = 1; 432 if (status & AWI_INT_RX) 433 awi_rx_int(sc); 434 if (status & AWI_INT_TX) 435 awi_tx_int(sc); 436 if (status & AWI_INT_CMD) 437 awi_cmd_done(sc); 438 if (status & AWI_INT_SCAN_CMPLT) { 439 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 440 sc->sc_substate == AWI_ST_NONE) 441 ieee80211_next_scan(&sc->sc_ic); 442 } 443 } 444 sc->sc_cansleep = ocansleep; 445 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 446 awi_write_1(sc, AWI_DIS_PWRDN, 0); 447 return handled; 448 } 449 450 451 static int 452 awi_init(struct ifnet *ifp) 453 { 454 struct awi_softc *sc = ifp->if_softc; 455 struct ieee80211com *ic = &sc->sc_ic; 456 struct ieee80211_node *ni = ic->ic_bss; 457 struct ieee80211_rateset *rs; 458 int error, rate, i; 459 460 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 461 if (sc->sc_enabled) { 462 awi_stop(ifp, 0); 463 } else { 464 if (sc->sc_enable) 465 (*sc->sc_enable)(sc); 466 sc->sc_enabled = 1; 467 if ((error = awi_hw_init(sc)) != 0) { 468 if (sc->sc_disable) 469 (*sc->sc_disable)(sc); 470 sc->sc_enabled = 0; 471 return error; 472 } 473 } 474 ic->ic_state = IEEE80211_S_INIT; 475 476 ic->ic_flags &= ~IEEE80211_F_IBSSON; 477 switch (ic->ic_opmode) { 478 case IEEE80211_M_STA: 479 sc->sc_mib_local.Network_Mode = 1; 480 sc->sc_mib_local.Acting_as_AP = 0; 481 break; 482 case IEEE80211_M_IBSS: 483 ic->ic_flags |= IEEE80211_F_IBSSON; 484 /* FALLTHRU */ 485 case IEEE80211_M_AHDEMO: 486 sc->sc_mib_local.Network_Mode = 0; 487 sc->sc_mib_local.Acting_as_AP = 0; 488 break; 489 case IEEE80211_M_HOSTAP: 490 sc->sc_mib_local.Network_Mode = 1; 491 sc->sc_mib_local.Acting_as_AP = 1; 492 break; 493 case IEEE80211_M_MONITOR: 494 return ENODEV; 495 } 496 #if 0 497 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 498 #endif 499 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 500 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 501 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 502 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 503 ic->ic_des_esslen); 504 505 /* configure basic rate */ 506 if (ic->ic_phytype == IEEE80211_T_FH) 507 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 508 else 509 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 510 if (ic->ic_fixed_rate != -1) { 511 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 512 } else { 513 rate = 0; 514 for (i = 0; i < rs->rs_nrates; i++) { 515 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 516 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 517 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 518 } 519 } 520 rate *= 5; 521 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 522 523 if ((error = awi_mode_init(sc)) != 0) { 524 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 525 awi_stop(ifp, 1); 526 return error; 527 } 528 529 /* start transmitter */ 530 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 531 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 532 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 533 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 534 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 535 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 536 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 537 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 538 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 539 awi_write_4(sc, AWI_CA_TX_MGT, 0); 540 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 541 awi_write_4(sc, AWI_CA_TX_PS, 0); 542 awi_write_4(sc, AWI_CA_TX_CF, 0); 543 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 544 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 545 awi_stop(ifp, 1); 546 return error; 547 } 548 549 /* start receiver */ 550 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 551 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 552 awi_stop(ifp, 1); 553 return error; 554 } 555 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 556 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 557 558 ifp->if_flags |= IFF_RUNNING; 559 ifp->if_flags &= ~IFF_OACTIVE; 560 ic->ic_state = IEEE80211_S_INIT; 561 562 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 563 ic->ic_opmode == IEEE80211_M_HOSTAP) { 564 ni->ni_chan = ic->ic_ibss_chan; 565 ni->ni_intval = ic->ic_lintval; 566 ni->ni_rssi = 0; 567 ni->ni_rstamp = 0; 568 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 569 ni->ni_rates = 570 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 571 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 572 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 573 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 574 ni->ni_esslen = ic->ic_des_esslen; 575 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 576 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 577 if (ic->ic_phytype == IEEE80211_T_FH) { 578 ni->ni_fhdwell = 200; /* XXX */ 579 ni->ni_fhindex = 1; 580 } 581 } else { 582 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 583 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 584 ni->ni_esslen = 0; 585 } 586 if (ic->ic_flags & IEEE80211_F_PRIVACY) 587 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 588 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 589 ic->ic_flags |= IEEE80211_F_SIBSS; 590 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 591 sc->sc_substate = AWI_ST_NONE; 592 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 593 } else { 594 /* XXX check sc->sc_cur_chan */ 595 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 596 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 597 } 598 return 0; 599 } 600 601 static void 602 awi_stop(struct ifnet *ifp, int disable) 603 { 604 struct awi_softc *sc = ifp->if_softc; 605 606 if (!sc->sc_enabled) 607 return; 608 609 DPRINTF(("awi_stop(%d)\n", disable)); 610 611 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 612 613 if (device_is_active(&sc->sc_dev)) { 614 if (sc->sc_cmd_inprog) 615 (void)awi_cmd_wait(sc); 616 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 617 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 618 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 619 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 620 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 621 awi_write_1(sc, AWI_CA_FTX_PS, 0); 622 awi_write_1(sc, AWI_CA_FTX_CF, 0); 623 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 624 } 625 ifp->if_flags &= ~(IFF_RUNNING|IFF_OACTIVE); 626 ifp->if_timer = 0; 627 sc->sc_tx_timer = sc->sc_rx_timer = 0; 628 if (sc->sc_rxpend != NULL) { 629 m_freem(sc->sc_rxpend); 630 sc->sc_rxpend = NULL; 631 } 632 IFQ_PURGE(&ifp->if_snd); 633 634 if (disable) { 635 if (device_is_active(&sc->sc_dev)) 636 am79c930_gcr_setbits(&sc->sc_chip, 637 AM79C930_GCR_CORESET); 638 if (sc->sc_disable) 639 (*sc->sc_disable)(sc); 640 sc->sc_enabled = 0; 641 } 642 } 643 644 static void 645 awi_start(struct ifnet *ifp) 646 { 647 struct awi_softc *sc = ifp->if_softc; 648 struct ieee80211com *ic = &sc->sc_ic; 649 struct ether_header *eh; 650 struct ieee80211_node *ni; 651 struct ieee80211_frame *wh; 652 struct mbuf *m, *m0; 653 int len, dowep; 654 u_int32_t txd, frame, ntxd; 655 u_int8_t rate; 656 657 if (!sc->sc_enabled || !device_is_active(&sc->sc_dev)) 658 return; 659 660 for (;;) { 661 txd = sc->sc_txnext; 662 IF_POLL(&ic->ic_mgtq, m0); 663 dowep = 0; 664 if (m0 != NULL) { 665 len = m0->m_pkthdr.len; 666 if (awi_next_txd(sc, len, &frame, &ntxd)) { 667 ifp->if_flags |= IFF_OACTIVE; 668 break; 669 } 670 IF_DEQUEUE(&ic->ic_mgtq, m0); 671 ni = (struct ieee80211_node *)m0->m_pkthdr.rcvif; 672 } else { 673 if (ic->ic_state != IEEE80211_S_RUN) 674 break; 675 IFQ_POLL(&ifp->if_snd, m0); 676 if (m0 == NULL) 677 break; 678 /* 679 * Need to calculate the real length to determine 680 * if the transmit buffer has a room for the packet. 681 */ 682 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 683 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 684 len += sizeof(struct llc) - 685 sizeof(struct ether_header); 686 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 687 dowep = 1; 688 len += IEEE80211_WEP_IVLEN + 689 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 690 } 691 if (awi_next_txd(sc, len, &frame, &ntxd)) { 692 ifp->if_flags |= IFF_OACTIVE; 693 break; 694 } 695 IFQ_DEQUEUE(&ifp->if_snd, m0); 696 ifp->if_opackets++; 697 if (ifp->if_bpf) 698 bpf_ops->bpf_mtap(ifp->if_bpf, m0); 699 eh = mtod(m0, struct ether_header *); 700 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 701 if (ni == NULL) { 702 ifp->if_oerrors++; 703 continue; 704 } 705 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 706 m0 = awi_ether_encap(sc, m0); 707 else { 708 m0 = ieee80211_encap(ic, m0, ni); 709 } 710 if (m0 == NULL) { 711 ieee80211_free_node(ni); 712 ifp->if_oerrors++; 713 continue; 714 } 715 wh = mtod(m0, struct ieee80211_frame *); 716 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 717 (ic->ic_opmode == IEEE80211_M_HOSTAP || 718 ic->ic_opmode == IEEE80211_M_IBSS) && 719 sc->sc_adhoc_ap == 0 && 720 (ifp->if_flags & IFF_LINK0) == 0 && 721 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 722 IEEE80211_FC0_TYPE_DATA) { 723 m_freem(m0); 724 ieee80211_free_node(ni); 725 ifp->if_oerrors++; 726 continue; 727 } 728 } 729 if (ic->ic_rawbpf) 730 bpf_ops->bpf_mtap(ic->ic_rawbpf, m0); 731 if (dowep) { 732 if ((ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 733 m_freem(m0); 734 ieee80211_free_node(ni); 735 ifp->if_oerrors++; 736 continue; 737 } 738 } 739 ieee80211_free_node(ni); 740 #ifdef DIAGNOSTIC 741 if (m0->m_pkthdr.len != len) { 742 printf("%s: length %d should be %d\n", 743 sc->sc_if.if_xname, m0->m_pkthdr.len, len); 744 m_freem(m0); 745 ifp->if_oerrors++; 746 continue; 747 } 748 #endif 749 750 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 751 ieee80211_dump_pkt(m0->m_data, m0->m_len, 752 ic->ic_bss->ni_rates. 753 rs_rates[ic->ic_bss->ni_txrate] & 754 IEEE80211_RATE_VAL, -1); 755 756 for (m = m0, len = 0; m != NULL; m = m->m_next) { 757 awi_write_bytes(sc, frame + len, mtod(m, u_int8_t *), 758 m->m_len); 759 len += m->m_len; 760 } 761 m_freem(m0); 762 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 763 IEEE80211_RATE_VAL) * 5; 764 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 765 awi_write_4(sc, txd + AWI_TXD_START, frame); 766 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 767 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 768 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 769 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 770 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 771 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 772 sc->sc_txnext = ntxd; 773 774 sc->sc_tx_timer = 5; 775 ifp->if_timer = 1; 776 } 777 } 778 779 static void 780 awi_watchdog(struct ifnet *ifp) 781 { 782 struct awi_softc *sc = ifp->if_softc; 783 u_int32_t prevdone; 784 int ocansleep; 785 786 ifp->if_timer = 0; 787 if (!sc->sc_enabled || !device_is_active(&sc->sc_dev)) 788 return; 789 790 ocansleep = sc->sc_cansleep; 791 sc->sc_cansleep = 0; 792 if (sc->sc_tx_timer) { 793 if (--sc->sc_tx_timer == 0) { 794 printf("%s: device timeout\n", ifp->if_xname); 795 prevdone = sc->sc_txdone; 796 awi_tx_int(sc); 797 if (sc->sc_txdone == prevdone) { 798 ifp->if_oerrors++; 799 awi_init(ifp); 800 goto out; 801 } 802 } 803 ifp->if_timer = 1; 804 } 805 if (sc->sc_rx_timer) { 806 if (--sc->sc_rx_timer == 0) { 807 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 808 ieee80211_new_state(&sc->sc_ic, 809 IEEE80211_S_SCAN, -1); 810 goto out; 811 } 812 } else 813 ifp->if_timer = 1; 814 } 815 /* TODO: rate control */ 816 ieee80211_watchdog(&sc->sc_ic); 817 out: 818 sc->sc_cansleep = ocansleep; 819 } 820 821 static int 822 awi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 823 { 824 struct awi_softc *sc = ifp->if_softc; 825 struct ifreq *ifr = (struct ifreq *)data; 826 int s, error; 827 828 s = splnet(); 829 /* serialize ioctl, since we may sleep */ 830 if ((error = awi_lock(sc)) != 0) 831 goto cantlock; 832 833 switch (cmd) { 834 case SIOCSIFFLAGS: 835 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 836 break; 837 if (ifp->if_flags & IFF_UP) { 838 if (sc->sc_enabled) { 839 /* 840 * To avoid rescanning another access point, 841 * do not call awi_init() here. Instead, 842 * only reflect promisc mode settings. 843 */ 844 error = awi_mode_init(sc); 845 } else 846 error = awi_init(ifp); 847 } else if (sc->sc_enabled) 848 awi_stop(ifp, 1); 849 break; 850 case SIOCSIFMEDIA: 851 case SIOCGIFMEDIA: 852 error = ifmedia_ioctl(ifp, ifr, &sc->sc_ic.ic_media, cmd); 853 break; 854 case SIOCADDMULTI: 855 case SIOCDELMULTI: 856 error = ether_ioctl(ifp, cmd, data); 857 if (error == ENETRESET) { 858 /* do not rescan */ 859 if (ifp->if_flags & IFF_RUNNING) 860 error = awi_mode_init(sc); 861 else 862 error = 0; 863 } 864 break; 865 default: 866 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 867 if (error == ENETRESET) { 868 if (sc->sc_enabled) 869 error = awi_init(ifp); 870 else 871 error = 0; 872 } 873 break; 874 } 875 awi_unlock(sc); 876 cantlock: 877 splx(s); 878 return error; 879 } 880 881 /* 882 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 883 * 884 * TBD factor with ieee80211_media_change 885 */ 886 static int 887 awi_media_change(struct ifnet *ifp) 888 { 889 struct awi_softc *sc = ifp->if_softc; 890 struct ieee80211com *ic = &sc->sc_ic; 891 struct ifmedia_entry *ime; 892 enum ieee80211_opmode newmode; 893 int i, rate, newadhoc_ap, error = 0; 894 895 ime = ic->ic_media.ifm_cur; 896 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 897 i = -1; 898 } else { 899 struct ieee80211_rateset *rs = 900 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 901 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 902 rate = ieee80211_media2rate(ime->ifm_media); 903 if (rate == 0) 904 return EINVAL; 905 for (i = 0; i < rs->rs_nrates; i++) { 906 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 907 break; 908 } 909 if (i == rs->rs_nrates) 910 return EINVAL; 911 } 912 if (ic->ic_fixed_rate != i) { 913 ic->ic_fixed_rate = i; 914 error = ENETRESET; 915 } 916 917 /* 918 * combination of mediaopt 919 * 920 * hostap adhoc flag0 opmode adhoc_ap comment 921 * + - - HOSTAP 0 HostAP 922 * - + - IBSS 0 IBSS 923 * - + + AHDEMO 0 WaveLAN adhoc 924 * - - + IBSS 1 Melco old Sta 925 * also LINK0 926 * - - - STA 0 Infra Station 927 */ 928 newadhoc_ap = 0; 929 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 930 newmode = IEEE80211_M_HOSTAP; 931 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 932 if (ic->ic_phytype == IEEE80211_T_DS && 933 (ime->ifm_media & IFM_FLAG0)) 934 newmode = IEEE80211_M_AHDEMO; 935 else 936 newmode = IEEE80211_M_IBSS; 937 } else if (ime->ifm_media & IFM_FLAG0) { 938 newmode = IEEE80211_M_IBSS; 939 newadhoc_ap = 1; 940 } else 941 newmode = IEEE80211_M_STA; 942 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 943 ic->ic_opmode = newmode; 944 sc->sc_adhoc_ap = newadhoc_ap; 945 error = ENETRESET; 946 } 947 948 if (error == ENETRESET) { 949 if (sc->sc_enabled) 950 error = awi_init(ifp); 951 else 952 error = 0; 953 } 954 return error; 955 } 956 957 static void 958 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 959 { 960 struct awi_softc *sc = ifp->if_softc; 961 struct ieee80211com *ic = &sc->sc_ic; 962 int rate; 963 enum ieee80211_phymode mode; 964 965 imr->ifm_status = IFM_AVALID; 966 if (ic->ic_state == IEEE80211_S_RUN) 967 imr->ifm_status |= IFM_ACTIVE; 968 imr->ifm_active = IFM_IEEE80211; 969 if (ic->ic_phytype == IEEE80211_T_FH) 970 mode = IEEE80211_MODE_FH; 971 else 972 mode = IEEE80211_MODE_11B; 973 if (ic->ic_state == IEEE80211_S_RUN) { 974 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 975 IEEE80211_RATE_VAL; 976 } else { 977 if (ic->ic_fixed_rate == -1) 978 rate = 0; 979 else 980 rate = ic->ic_sup_rates[mode]. 981 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 982 } 983 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 984 switch (ic->ic_opmode) { 985 case IEEE80211_M_MONITOR: /* we should never reach here */ 986 break; 987 case IEEE80211_M_STA: 988 break; 989 case IEEE80211_M_IBSS: 990 if (sc->sc_adhoc_ap) 991 imr->ifm_active |= IFM_FLAG0; 992 else 993 imr->ifm_active |= IFM_IEEE80211_ADHOC; 994 break; 995 case IEEE80211_M_AHDEMO: 996 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 997 break; 998 case IEEE80211_M_HOSTAP: 999 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1000 break; 1001 } 1002 } 1003 1004 static int 1005 awi_mode_init(struct awi_softc *sc) 1006 { 1007 struct ifnet *ifp = &sc->sc_if; 1008 int n, error; 1009 struct ether_multi *enm; 1010 struct ether_multistep step; 1011 1012 /* reinitialize muticast filter */ 1013 n = 0; 1014 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1015 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1016 (ifp->if_flags & IFF_PROMISC)) { 1017 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1018 goto set_mib; 1019 } 1020 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1021 ETHER_FIRST_MULTI(step, &sc->sc_ec, enm); 1022 while (enm != NULL) { 1023 if (n == AWI_GROUP_ADDR_SIZE || 1024 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) 1025 goto set_mib; 1026 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1027 enm->enm_addrlo); 1028 n++; 1029 ETHER_NEXT_MULTI(step, enm); 1030 } 1031 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1032 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1033 IEEE80211_ADDR_LEN); 1034 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1035 1036 set_mib: 1037 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1038 ifp->if_flags &= ~IFF_ALLMULTI; 1039 else 1040 ifp->if_flags |= IFF_ALLMULTI; 1041 sc->sc_mib_mgt.Wep_Required = 1042 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1043 1044 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1045 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1046 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1047 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1048 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1049 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1050 return error; 1051 } 1052 return 0; 1053 } 1054 1055 static void 1056 awi_rx_int(struct awi_softc *sc) 1057 { 1058 struct ieee80211com *ic = &sc->sc_ic; 1059 struct ifnet *ifp = &sc->sc_if; 1060 struct ieee80211_frame_min *wh; 1061 struct ieee80211_node *ni; 1062 u_int8_t state, rate, rssi; 1063 u_int16_t len; 1064 u_int32_t frame, next, rstamp, rxoff; 1065 struct mbuf *m; 1066 1067 rxoff = sc->sc_rxdoff; 1068 for (;;) { 1069 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1070 if (state & AWI_RXD_ST_OWN) 1071 break; 1072 if (!(state & AWI_RXD_ST_CONSUMED)) { 1073 if (sc->sc_substate != AWI_ST_NONE) 1074 goto rx_next; 1075 if (state & AWI_RXD_ST_RXERROR) { 1076 ifp->if_ierrors++; 1077 goto rx_next; 1078 } 1079 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1080 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1081 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1082 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1083 0x7fff; 1084 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1085 m = awi_devget(sc, frame, len); 1086 if (m == NULL) { 1087 ifp->if_ierrors++; 1088 goto rx_next; 1089 } 1090 if (state & AWI_RXD_ST_LF) { 1091 /* TODO check my bss */ 1092 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1093 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1094 sc->sc_rx_timer = 10; 1095 ifp->if_timer = 1; 1096 } 1097 if ((ifp->if_flags & IFF_DEBUG) && 1098 (ifp->if_flags & IFF_LINK2)) 1099 ieee80211_dump_pkt(m->m_data, m->m_len, 1100 rate / 5, rssi); 1101 if ((ifp->if_flags & IFF_LINK0) || 1102 sc->sc_adhoc_ap) 1103 m = awi_ether_modcap(sc, m); 1104 else 1105 m = m_pullup(m, sizeof(*wh)); 1106 if (m == NULL) { 1107 ifp->if_ierrors++; 1108 goto rx_next; 1109 } 1110 wh = mtod(m, struct ieee80211_frame_min *); 1111 ni = ieee80211_find_rxnode(ic, wh); 1112 ieee80211_input(ic, m, ni, rssi, rstamp); 1113 /* 1114 * The frame may have caused the 1115 * node to be marked for reclamation 1116 * (e.g. in response to a DEAUTH 1117 * message) so use release_node here 1118 * instead of unref_node. 1119 */ 1120 ieee80211_free_node(ni); 1121 } else 1122 sc->sc_rxpend = m; 1123 rx_next: 1124 state |= AWI_RXD_ST_CONSUMED; 1125 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1126 } 1127 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1128 if (next & AWI_RXD_NEXT_LAST) 1129 break; 1130 /* make sure the next pointer is correct */ 1131 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1132 break; 1133 state |= AWI_RXD_ST_OWN; 1134 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1135 rxoff = next & 0x7fff; 1136 } 1137 sc->sc_rxdoff = rxoff; 1138 } 1139 1140 static void 1141 awi_tx_int(struct awi_softc *sc) 1142 { 1143 struct ifnet *ifp = &sc->sc_if; 1144 u_int8_t flags; 1145 1146 while (sc->sc_txdone != sc->sc_txnext) { 1147 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1148 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1149 break; 1150 if (flags & AWI_TXD_ST_ERROR) 1151 ifp->if_oerrors++; 1152 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1153 0x7fff; 1154 } 1155 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1156 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1157 sc->sc_tx_timer = 0; 1158 ifp->if_flags &= ~IFF_OACTIVE; 1159 awi_start(ifp); 1160 } 1161 1162 static struct mbuf * 1163 awi_devget(struct awi_softc *sc, u_int32_t off, u_int16_t len) 1164 { 1165 struct ifnet *ifp = &sc->sc_if; 1166 struct mbuf *m; 1167 struct mbuf *top, **mp; 1168 u_int tlen; 1169 1170 top = sc->sc_rxpend; 1171 mp = ⊤ 1172 if (top != NULL) { 1173 sc->sc_rxpend = NULL; 1174 top->m_pkthdr.len += len; 1175 m = top; 1176 while (*mp != NULL) { 1177 m = *mp; 1178 mp = &m->m_next; 1179 } 1180 if (m->m_flags & M_EXT) 1181 tlen = m->m_ext.ext_size; 1182 else if (m->m_flags & M_PKTHDR) 1183 tlen = MHLEN; 1184 else 1185 tlen = MLEN; 1186 tlen -= m->m_len; 1187 if (tlen > len) 1188 tlen = len; 1189 awi_read_bytes(sc, off, mtod(m, u_int8_t *) + m->m_len, tlen); 1190 off += tlen; 1191 len -= tlen; 1192 } 1193 1194 while (len > 0) { 1195 if (top == NULL) { 1196 MGETHDR(m, M_DONTWAIT, MT_DATA); 1197 if (m == NULL) 1198 return NULL; 1199 m->m_pkthdr.rcvif = ifp; 1200 m->m_pkthdr.len = len; 1201 m->m_len = MHLEN; 1202 m->m_flags |= M_HASFCS; 1203 } else { 1204 MGET(m, M_DONTWAIT, MT_DATA); 1205 if (m == NULL) { 1206 m_freem(top); 1207 return NULL; 1208 } 1209 m->m_len = MLEN; 1210 } 1211 if (len >= MINCLSIZE) { 1212 MCLGET(m, M_DONTWAIT); 1213 if (m->m_flags & M_EXT) 1214 m->m_len = m->m_ext.ext_size; 1215 } 1216 if (top == NULL) { 1217 int hdrlen = sizeof(struct ieee80211_frame) + 1218 sizeof(struct llc); 1219 char *newdata = (char *) 1220 ALIGN(m->m_data + hdrlen) - hdrlen; 1221 m->m_len -= newdata - m->m_data; 1222 m->m_data = newdata; 1223 } 1224 if (m->m_len > len) 1225 m->m_len = len; 1226 awi_read_bytes(sc, off, mtod(m, u_int8_t *), m->m_len); 1227 off += m->m_len; 1228 len -= m->m_len; 1229 *mp = m; 1230 mp = &m->m_next; 1231 } 1232 return top; 1233 } 1234 1235 /* 1236 * Initialize hardware and start firmware to accept commands. 1237 * Called everytime after power on firmware. 1238 */ 1239 1240 static int 1241 awi_hw_init(struct awi_softc *sc) 1242 { 1243 u_int8_t status; 1244 u_int16_t intmask; 1245 int i, error; 1246 1247 sc->sc_enab_intr = 0; 1248 awi_drvstate(sc, AWI_DRV_RESET); 1249 1250 /* reset firmware */ 1251 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1252 DELAY(100); 1253 awi_write_1(sc, AWI_SELFTEST, 0); 1254 awi_write_1(sc, AWI_CMD, 0); 1255 awi_write_1(sc, AWI_BANNER, 0); 1256 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1257 DELAY(100); 1258 1259 /* wait for selftest completion */ 1260 for (i = 0; ; i++) { 1261 if (!device_is_active(&sc->sc_dev)) 1262 return ENXIO; 1263 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1264 printf("%s: failed to complete selftest (timeout)\n", 1265 sc->sc_if.if_xname); 1266 return ENXIO; 1267 } 1268 status = awi_read_1(sc, AWI_SELFTEST); 1269 if ((status & 0xf0) == 0xf0) 1270 break; 1271 if (sc->sc_cansleep) { 1272 sc->sc_sleep_cnt++; 1273 (void)tsleep(sc, PWAIT, "awitst", 1); 1274 sc->sc_sleep_cnt--; 1275 } else { 1276 DELAY(1000*1000/hz); 1277 } 1278 } 1279 if (status != AWI_SELFTEST_PASSED) { 1280 printf("%s: failed to complete selftest (code %x)\n", 1281 sc->sc_if.if_xname, status); 1282 return ENXIO; 1283 } 1284 1285 /* check banner to confirm firmware write it */ 1286 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1287 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1288 printf("%s: failed to complete selftest (bad banner)\n", 1289 sc->sc_if.if_xname); 1290 for (i = 0; i < AWI_BANNER_LEN; i++) 1291 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1292 printf("\n"); 1293 return ENXIO; 1294 } 1295 1296 /* initializing interrupt */ 1297 sc->sc_enab_intr = 1; 1298 error = awi_intr_lock(sc); 1299 if (error) 1300 return error; 1301 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1302 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1303 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1304 awi_write_1(sc, AWI_INTMASK2, 0); 1305 awi_write_1(sc, AWI_INTSTAT, 0); 1306 awi_write_1(sc, AWI_INTSTAT2, 0); 1307 awi_intr_unlock(sc); 1308 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1309 1310 /* issuing interface test command */ 1311 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1312 if (error) { 1313 printf("%s: failed to complete selftest", 1314 sc->sc_if.if_xname); 1315 if (error == ENXIO) 1316 printf(" (no hardware)\n"); 1317 else if (error != EWOULDBLOCK) 1318 printf(" (error %d)\n", error); 1319 else if (sc->sc_cansleep) 1320 printf(" (lost interrupt)\n"); 1321 else 1322 printf(" (command timeout)\n"); 1323 return error; 1324 } 1325 1326 /* Initialize VBM */ 1327 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1328 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1329 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1330 return 0; 1331 } 1332 1333 /* 1334 * Extract the factory default MIB value from firmware and assign the driver 1335 * default value. 1336 * Called once at attaching the interface. 1337 */ 1338 1339 static int 1340 awi_init_mibs(struct awi_softc *sc) 1341 { 1342 int chan, i, error; 1343 struct ieee80211com *ic = &sc->sc_ic; 1344 struct awi_chanset *cs; 1345 1346 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1347 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1348 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1349 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1350 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1351 printf("%s: failed to get default mib value (error %d)\n", 1352 sc->sc_if.if_xname, error); 1353 return error; 1354 } 1355 1356 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1357 for (cs = awi_chanset; ; cs++) { 1358 if (cs->cs_type == 0) { 1359 printf("%s: failed to set available channel\n", 1360 sc->sc_if.if_xname); 1361 return ENXIO; 1362 } 1363 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1364 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1365 break; 1366 } 1367 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1368 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1369 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1370 setbit(sc->sc_ic.ic_chan_avail, chan); 1371 /* XXX for FHSS, does frequency matter? */ 1372 ic->ic_channels[chan].ic_freq = 0; 1373 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1374 /* 1375 * According to the IEEE 802.11 specification, 1376 * hop pattern parameter for FH phy should be 1377 * incremented by 3 for given hop chanset, i.e., 1378 * the chanset parameter is calculated for given 1379 * hop patter. However, BayStack 650 Access Points 1380 * apparently use fixed hop chanset parameter value 1381 * 1 for any hop pattern. So we also try this 1382 * combination of hop chanset and pattern. 1383 */ 1384 chan = IEEE80211_FH_CHAN(1, i); 1385 setbit(sc->sc_ic.ic_chan_avail, chan); 1386 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1387 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1388 } 1389 } else { 1390 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1391 setbit(sc->sc_ic.ic_chan_avail, i); 1392 ic->ic_channels[i].ic_freq = 1393 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1394 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1395 } 1396 } 1397 sc->sc_cur_chan = cs->cs_def; 1398 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1399 1400 sc->sc_mib_local.Fragmentation_Dis = 1; 1401 sc->sc_mib_local.Add_PLCP_Dis = 0; 1402 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1403 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1404 sc->sc_mib_local.Re_Assembly_Dis = 1; 1405 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1406 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1407 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1408 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1409 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1410 sc->sc_mib_local.Network_Mode = 1; 1411 sc->sc_mib_local.PWD_Lvl = 0; 1412 sc->sc_mib_local.CFP_Mode = 0; 1413 1414 /* allocate buffers */ 1415 sc->sc_txbase = AWI_BUFFERS; 1416 sc->sc_txend = sc->sc_txbase + 1417 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1418 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1419 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1420 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1421 sc->sc_txend - sc->sc_txbase); 1422 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1423 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1424 AWI_BUFFERS_END - sc->sc_txend); 1425 sc->sc_mib_local.Acting_as_AP = 0; 1426 sc->sc_mib_local.Fill_CFP = 0; 1427 1428 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1429 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1430 1431 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1432 sc->sc_mib_mgt.aDTIM_Period = 1; 1433 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1434 return 0; 1435 } 1436 1437 static int 1438 awi_mib(struct awi_softc *sc, u_int8_t cmd, u_int8_t mib, int wflag) 1439 { 1440 int error; 1441 u_int8_t size, *ptr; 1442 1443 switch (mib) { 1444 case AWI_MIB_LOCAL: 1445 ptr = (u_int8_t *)&sc->sc_mib_local; 1446 size = sizeof(sc->sc_mib_local); 1447 break; 1448 case AWI_MIB_ADDR: 1449 ptr = (u_int8_t *)&sc->sc_mib_addr; 1450 size = sizeof(sc->sc_mib_addr); 1451 break; 1452 case AWI_MIB_MAC: 1453 ptr = (u_int8_t *)&sc->sc_mib_mac; 1454 size = sizeof(sc->sc_mib_mac); 1455 break; 1456 case AWI_MIB_STAT: 1457 ptr = (u_int8_t *)&sc->sc_mib_stat; 1458 size = sizeof(sc->sc_mib_stat); 1459 break; 1460 case AWI_MIB_MGT: 1461 ptr = (u_int8_t *)&sc->sc_mib_mgt; 1462 size = sizeof(sc->sc_mib_mgt); 1463 break; 1464 case AWI_MIB_PHY: 1465 ptr = (u_int8_t *)&sc->sc_mib_phy; 1466 size = sizeof(sc->sc_mib_phy); 1467 break; 1468 default: 1469 return EINVAL; 1470 } 1471 if (sc->sc_cmd_inprog) { 1472 if ((error = awi_cmd_wait(sc)) != 0) { 1473 if (error == EWOULDBLOCK) { 1474 DPRINTF(("awi_mib: cmd %d inprog", 1475 sc->sc_cmd_inprog)); 1476 } 1477 return error; 1478 } 1479 } 1480 sc->sc_cmd_inprog = cmd; 1481 if (cmd == AWI_CMD_SET_MIB) 1482 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1483 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1484 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1485 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1486 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1487 return error; 1488 if (cmd == AWI_CMD_GET_MIB) { 1489 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1490 #ifdef AWI_DEBUG 1491 if (awi_debug) { 1492 int i; 1493 1494 printf("awi_mib: #%d:", mib); 1495 for (i = 0; i < size; i++) 1496 printf(" %02x", ptr[i]); 1497 printf("\n"); 1498 } 1499 #endif 1500 } 1501 return 0; 1502 } 1503 1504 static int 1505 awi_cmd(struct awi_softc *sc, u_int8_t cmd, int wflag) 1506 { 1507 u_int8_t status; 1508 int error = 0; 1509 #ifdef AWI_DEBUG 1510 static const char *cmdname[] = { 1511 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1512 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1513 }; 1514 #endif 1515 1516 #ifdef AWI_DEBUG 1517 if (awi_debug > 1) { 1518 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1519 printf("awi_cmd: #%d", cmd); 1520 else 1521 printf("awi_cmd: %s", cmdname[cmd]); 1522 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1523 } 1524 #endif 1525 sc->sc_cmd_inprog = cmd; 1526 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1527 awi_write_1(sc, AWI_CMD, cmd); 1528 if (wflag == AWI_NOWAIT) 1529 return EINPROGRESS; 1530 if ((error = awi_cmd_wait(sc)) != 0) 1531 return error; 1532 status = awi_read_1(sc, AWI_CMD_STATUS); 1533 awi_write_1(sc, AWI_CMD, 0); 1534 switch (status) { 1535 case AWI_STAT_OK: 1536 break; 1537 case AWI_STAT_BADPARM: 1538 return EINVAL; 1539 default: 1540 printf("%s: command %d failed %x\n", 1541 sc->sc_if.if_xname, cmd, status); 1542 return ENXIO; 1543 } 1544 return 0; 1545 } 1546 1547 static int 1548 awi_cmd_wait(struct awi_softc *sc) 1549 { 1550 int i, error = 0; 1551 1552 i = 0; 1553 while (sc->sc_cmd_inprog) { 1554 if (!device_is_active(&sc->sc_dev)) 1555 return ENXIO; 1556 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1557 printf("%s: failed to access hardware\n", 1558 sc->sc_if.if_xname); 1559 config_deactivate(&sc->sc_dev); 1560 return ENXIO; 1561 } 1562 if (sc->sc_cansleep) { 1563 sc->sc_sleep_cnt++; 1564 error = tsleep(sc, PWAIT, "awicmd", 1565 AWI_CMD_TIMEOUT*hz/1000); 1566 sc->sc_sleep_cnt--; 1567 } else { 1568 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1569 awi_cmd_done(sc); 1570 break; 1571 } 1572 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1573 error = EWOULDBLOCK; 1574 else 1575 DELAY(10); 1576 } 1577 if (error) 1578 break; 1579 } 1580 if (error) { 1581 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1582 sc->sc_cmd_inprog, error)); 1583 } 1584 return error; 1585 } 1586 1587 static void 1588 awi_cmd_done(struct awi_softc *sc) 1589 { 1590 u_int8_t cmd, status; 1591 1592 status = awi_read_1(sc, AWI_CMD_STATUS); 1593 if (status == AWI_STAT_IDLE) 1594 return; /* stray interrupt */ 1595 1596 cmd = sc->sc_cmd_inprog; 1597 sc->sc_cmd_inprog = 0; 1598 wakeup(sc); 1599 awi_write_1(sc, AWI_CMD, 0); 1600 1601 if (status != AWI_STAT_OK) { 1602 printf("%s: command %d failed %x\n", 1603 sc->sc_if.if_xname, cmd, status); 1604 sc->sc_substate = AWI_ST_NONE; 1605 return; 1606 } 1607 if (sc->sc_substate != AWI_ST_NONE) 1608 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1609 } 1610 1611 static int 1612 awi_next_txd(struct awi_softc *sc, int len, u_int32_t *framep, u_int32_t *ntxdp) 1613 { 1614 u_int32_t txd, ntxd, frame; 1615 1616 txd = sc->sc_txnext; 1617 frame = txd + AWI_TXD_SIZE; 1618 if (frame + len > sc->sc_txend) 1619 frame = sc->sc_txbase; 1620 ntxd = frame + len; 1621 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1622 ntxd = sc->sc_txbase; 1623 *framep = frame; 1624 *ntxdp = ntxd; 1625 /* 1626 * Determine if there are any room in ring buffer. 1627 * --- send wait, === new data, +++ conflict (ENOBUFS) 1628 * base........................end 1629 * done----txd=====ntxd OK 1630 * --txd=====done++++ntxd-- full 1631 * --txd=====ntxd done-- OK 1632 * ==ntxd done----txd=== OK 1633 * ==done++++ntxd----txd=== full 1634 * ++ntxd txd=====done++ full 1635 */ 1636 if (txd < ntxd) { 1637 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1638 return ENOBUFS; 1639 } else { 1640 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1641 return ENOBUFS; 1642 } 1643 return 0; 1644 } 1645 1646 static int 1647 awi_lock(struct awi_softc *sc) 1648 { 1649 int error = 0; 1650 1651 if (curlwp == NULL) 1652 { 1653 /* 1654 * XXX 1655 * Though driver ioctl should be called with context, 1656 * KAME ipv6 stack calls ioctl in interrupt for now. 1657 * We simply abort the request if there are other 1658 * ioctl requests in progress. 1659 */ 1660 if (sc->sc_busy) { 1661 if (!device_is_active(&sc->sc_dev)) 1662 return ENXIO; 1663 return EWOULDBLOCK; 1664 } 1665 sc->sc_busy = 1; 1666 sc->sc_cansleep = 0; 1667 return 0; 1668 } 1669 while (sc->sc_busy) { 1670 if (!device_is_active(&sc->sc_dev)) 1671 return ENXIO; 1672 sc->sc_sleep_cnt++; 1673 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1674 sc->sc_sleep_cnt--; 1675 if (error) 1676 return error; 1677 } 1678 sc->sc_busy = 1; 1679 sc->sc_cansleep = 1; 1680 return 0; 1681 } 1682 1683 static void 1684 awi_unlock(struct awi_softc *sc) 1685 { 1686 sc->sc_busy = 0; 1687 sc->sc_cansleep = 0; 1688 if (sc->sc_sleep_cnt) 1689 wakeup(sc); 1690 } 1691 1692 static int 1693 awi_intr_lock(struct awi_softc *sc) 1694 { 1695 u_int8_t status; 1696 int i, retry; 1697 1698 status = 1; 1699 for (retry = 0; retry < 10; retry++) { 1700 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1701 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1702 break; 1703 DELAY(5); 1704 } 1705 if (status != 0) 1706 break; 1707 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1708 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1709 break; 1710 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1711 } 1712 if (status != 0) { 1713 printf("%s: failed to lock interrupt\n", 1714 sc->sc_if.if_xname); 1715 return ENXIO; 1716 } 1717 return 0; 1718 } 1719 1720 static void 1721 awi_intr_unlock(struct awi_softc *sc) 1722 { 1723 1724 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1725 } 1726 1727 static int 1728 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1729 { 1730 struct ifnet *ifp = ic->ic_ifp; 1731 struct awi_softc *sc = ifp->if_softc; 1732 struct ieee80211_node *ni; 1733 int error; 1734 u_int8_t newmode; 1735 enum ieee80211_state ostate; 1736 #ifdef AWI_DEBUG 1737 static const char *stname[] = 1738 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1739 static const char *substname[] = 1740 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1741 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1742 #endif /* AWI_DEBUG */ 1743 1744 ostate = ic->ic_state; 1745 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1746 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1747 1748 /* set LED */ 1749 switch (nstate) { 1750 case IEEE80211_S_INIT: 1751 awi_drvstate(sc, AWI_DRV_RESET); 1752 break; 1753 case IEEE80211_S_SCAN: 1754 if (ic->ic_opmode == IEEE80211_M_IBSS || 1755 ic->ic_opmode == IEEE80211_M_AHDEMO) 1756 awi_drvstate(sc, AWI_DRV_ADHSC); 1757 else 1758 awi_drvstate(sc, AWI_DRV_INFSY); 1759 break; 1760 case IEEE80211_S_AUTH: 1761 awi_drvstate(sc, AWI_DRV_INFSY); 1762 break; 1763 case IEEE80211_S_ASSOC: 1764 awi_drvstate(sc, AWI_DRV_INFAUTH); 1765 break; 1766 case IEEE80211_S_RUN: 1767 if (ic->ic_opmode == IEEE80211_M_IBSS || 1768 ic->ic_opmode == IEEE80211_M_AHDEMO) 1769 awi_drvstate(sc, AWI_DRV_ADHSY); 1770 else 1771 awi_drvstate(sc, AWI_DRV_INFASSOC); 1772 break; 1773 } 1774 1775 if (nstate == IEEE80211_S_INIT) { 1776 sc->sc_substate = AWI_ST_NONE; 1777 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1778 return (*sc->sc_newstate)(ic, nstate, arg); 1779 } 1780 1781 /* state transition */ 1782 if (nstate == IEEE80211_S_SCAN) { 1783 /* SCAN substate */ 1784 if (sc->sc_substate == AWI_ST_NONE) { 1785 sc->sc_nstate = nstate; /* next state in transition */ 1786 sc->sc_substate = AWI_ST_SCAN_INIT; 1787 } 1788 switch (sc->sc_substate) { 1789 case AWI_ST_SCAN_INIT: 1790 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1791 switch (ostate) { 1792 case IEEE80211_S_RUN: 1793 /* beacon miss */ 1794 if (ifp->if_flags & IFF_DEBUG) 1795 printf("%s: no recent beacons from %s;" 1796 " rescanning\n", 1797 ifp->if_xname, 1798 ether_sprintf(ic->ic_bss->ni_bssid)); 1799 /* FALLTHRU */ 1800 case IEEE80211_S_AUTH: 1801 case IEEE80211_S_ASSOC: 1802 case IEEE80211_S_INIT: 1803 ieee80211_begin_scan(ic, 1); 1804 /* FALLTHRU */ 1805 case IEEE80211_S_SCAN: 1806 /* scan next */ 1807 break; 1808 } 1809 if (ic->ic_flags & IEEE80211_F_ASCAN) 1810 newmode = AWI_SCAN_ACTIVE; 1811 else 1812 newmode = AWI_SCAN_PASSIVE; 1813 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1814 sc->sc_mib_mgt.aScan_Mode = newmode; 1815 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1816 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1817 break; 1818 } 1819 /* FALLTHRU */ 1820 case AWI_ST_SCAN_SETMIB: 1821 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1822 if (sc->sc_cmd_inprog) { 1823 if ((error = awi_cmd_wait(sc)) != 0) 1824 break; 1825 } 1826 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1827 ni = ic->ic_bss; 1828 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1829 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1830 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1831 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1832 awi_write_1(sc, AWI_CA_SCAN_SET, 1833 IEEE80211_FH_CHANSET( 1834 ieee80211_chan2ieee(ic, ni->ni_chan))); 1835 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1836 IEEE80211_FH_CHANPAT( 1837 ieee80211_chan2ieee(ic, ni->ni_chan))); 1838 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1839 } else { 1840 awi_write_1(sc, AWI_CA_SCAN_SET, 1841 ieee80211_chan2ieee(ic, ni->ni_chan)); 1842 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1843 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1844 } 1845 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1846 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1847 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1848 != 0) 1849 break; 1850 /* FALLTHRU */ 1851 case AWI_ST_SCAN_SCCMD: 1852 ic->ic_state = nstate; 1853 sc->sc_substate = AWI_ST_NONE; 1854 error = EINPROGRESS; 1855 break; 1856 default: 1857 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1858 stname[nstate], substname[sc->sc_substate])); 1859 sc->sc_substate = AWI_ST_NONE; 1860 error = EIO; 1861 break; 1862 } 1863 goto out; 1864 } 1865 1866 if (ostate == IEEE80211_S_SCAN) { 1867 /* set SSID and channel */ 1868 /* substate */ 1869 if (sc->sc_substate == AWI_ST_NONE) { 1870 sc->sc_nstate = nstate; /* next state in transition */ 1871 sc->sc_substate = AWI_ST_SUB_INIT; 1872 } 1873 ni = ic->ic_bss; 1874 switch (sc->sc_substate) { 1875 case AWI_ST_SUB_INIT: 1876 sc->sc_substate = AWI_ST_SUB_SETSS; 1877 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1878 ni->ni_bssid); 1879 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1880 AWI_ESS_ID_SIZE); 1881 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1882 IEEE80211_ELEMID_SSID; 1883 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1884 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1885 ni->ni_essid, ni->ni_esslen); 1886 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1887 ni->ni_intval); 1888 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1889 AWI_NOWAIT)) != 0) 1890 break; 1891 /* FALLTHRU */ 1892 case AWI_ST_SUB_SETSS: 1893 sc->sc_substate = AWI_ST_SUB_SYNC; 1894 if (sc->sc_cmd_inprog) { 1895 if ((error = awi_cmd_wait(sc)) != 0) 1896 break; 1897 } 1898 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1899 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1900 awi_write_1(sc, AWI_CA_SYNC_SET, 1901 IEEE80211_FH_CHANSET( 1902 ieee80211_chan2ieee(ic, ni->ni_chan))); 1903 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1904 IEEE80211_FH_CHANPAT( 1905 ieee80211_chan2ieee(ic, ni->ni_chan))); 1906 awi_write_1(sc, AWI_CA_SYNC_IDX, 1907 ni->ni_fhindex); 1908 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1909 ni->ni_fhdwell); 1910 } else { 1911 awi_write_1(sc, AWI_CA_SYNC_SET, 1912 ieee80211_chan2ieee(ic, ni->ni_chan)); 1913 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1914 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1915 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1916 } 1917 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1918 memset(&ni->ni_tstamp, 0, 1919 sizeof(ni->ni_tstamp)); 1920 ni->ni_rstamp = 0; 1921 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1922 } else 1923 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1924 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1925 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1926 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 1927 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1928 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1929 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1930 != 0) 1931 break; 1932 /* FALLTHRU */ 1933 case AWI_ST_SUB_SYNC: 1934 sc->sc_substate = AWI_ST_NONE; 1935 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1936 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1937 AWI_MIB_MGT, AWI_WAIT)) != 0) 1938 break; 1939 IEEE80211_ADDR_COPY(ni->ni_bssid, 1940 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1941 } else { 1942 if (nstate == IEEE80211_S_RUN) { 1943 sc->sc_rx_timer = 10; 1944 ifp->if_timer = 1; 1945 } 1946 } 1947 error = 0; 1948 break; 1949 default: 1950 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1951 stname[nstate], substname[sc->sc_substate])); 1952 sc->sc_substate = AWI_ST_NONE; 1953 error = EIO; 1954 break; 1955 } 1956 goto out; 1957 } 1958 1959 sc->sc_substate = AWI_ST_NONE; 1960 1961 return (*sc->sc_newstate)(ic, nstate, arg); 1962 out: 1963 if (error != 0) { 1964 if (error == EINPROGRESS) 1965 error = 0; 1966 return error; 1967 } 1968 return (*sc->sc_newstate)(ic, nstate, arg); 1969 } 1970 1971 static void 1972 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1973 struct ieee80211_node *ni, 1974 int subtype, int rssi, u_int32_t rstamp) 1975 { 1976 struct awi_softc *sc = ic->ic_ifp->if_softc; 1977 1978 /* probe request is handled by hardware */ 1979 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1980 return; 1981 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1982 } 1983 1984 static int 1985 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 1986 int type, int arg) 1987 { 1988 struct awi_softc *sc = ic->ic_ifp->if_softc; 1989 1990 /* probe request is handled by hardware */ 1991 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1992 return 0; 1993 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 1994 } 1995 1996 static struct mbuf * 1997 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 1998 { 1999 struct ieee80211com *ic = &sc->sc_ic; 2000 struct ieee80211_node *ni = ic->ic_bss; 2001 struct ether_header *eh; 2002 struct ieee80211_frame *wh; 2003 2004 if (m->m_len < sizeof(struct ether_header)) { 2005 m = m_pullup(m, sizeof(struct ether_header)); 2006 if (m == NULL) 2007 return NULL; 2008 } 2009 eh = mtod(m, struct ether_header *); 2010 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2011 if (m == NULL) 2012 return NULL; 2013 wh = mtod(m, struct ieee80211_frame *); 2014 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2015 *(u_int16_t *)wh->i_dur = 0; 2016 *(u_int16_t *)wh->i_seq = 2017 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2018 ni->ni_txseqs[0]++; 2019 if (ic->ic_opmode == IEEE80211_M_IBSS || 2020 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2021 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2022 if (sc->sc_adhoc_ap) 2023 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2024 else 2025 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2026 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2027 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2028 } else { 2029 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2030 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2031 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2032 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2033 } 2034 return m; 2035 } 2036 2037 static struct mbuf * 2038 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2039 { 2040 struct ieee80211com *ic = &sc->sc_ic; 2041 struct ether_header eh; 2042 struct ieee80211_frame wh; 2043 struct llc *llc; 2044 2045 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2046 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2047 if (m == NULL) 2048 return NULL; 2049 } 2050 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2051 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2052 return m; 2053 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2054 m_adj(m, sizeof(eh) - sizeof(*llc)); 2055 if (ic->ic_opmode == IEEE80211_M_IBSS || 2056 ic->ic_opmode == IEEE80211_M_AHDEMO) 2057 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2058 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2059 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2060 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2061 llc->llc_control = LLC_UI; 2062 llc->llc_snap.org_code[0] = 0; 2063 llc->llc_snap.org_code[1] = 0; 2064 llc->llc_snap.org_code[2] = 0; 2065 llc->llc_snap.ether_type = eh.ether_type; 2066 return m; 2067 } 2068
Indexes created Sun Oct 19 19:09:49 GMT 2025