1 /* $NetBSD: awi.c,v 1.104 2025/07/09 21:25:35 andvar 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 1.104 2025/07/09 21:25:35 andvar 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/proc.h> 90 #include <sys/socket.h> 91 #include <sys/sockio.h> 92 #include <sys/errno.h> 93 #include <sys/endian.h> 94 #include <sys/device.h> 95 #include <sys/cpu.h> 96 #include <sys/bus.h> 97 98 #include <net/if.h> 99 #include <net/if_dl.h> 100 #include <net/if_ether.h> 101 #include <net/if_media.h> 102 #include <net/if_llc.h> 103 #include <net/bpf.h> 104 105 #include <net80211/ieee80211_netbsd.h> 106 #include <net80211/ieee80211_var.h> 107 108 #include <dev/ic/am79c930reg.h> 109 #include <dev/ic/am79c930var.h> 110 #include <dev/ic/awireg.h> 111 #include <dev/ic/awivar.h> 112 113 static void awi_softintr(void *); 114 static int awi_init(struct ifnet *); 115 static void awi_stop(struct ifnet *, int); 116 static void awi_start(struct ifnet *); 117 static void awi_watchdog(struct ifnet *); 118 static int awi_ioctl(struct ifnet *, u_long, void *); 119 static int awi_media_change(struct ifnet *); 120 static void awi_media_status(struct ifnet *, struct ifmediareq *); 121 static int awi_mode_init(struct awi_softc *); 122 static void awi_rx_int(struct awi_softc *); 123 static void awi_tx_int(struct awi_softc *); 124 static struct mbuf *awi_devget(struct awi_softc *, uint32_t, uint16_t); 125 static int awi_hw_init(struct awi_softc *); 126 static int awi_init_mibs(struct awi_softc *); 127 static int awi_mib(struct awi_softc *, uint8_t, uint8_t, int); 128 static int awi_cmd(struct awi_softc *, uint8_t, int); 129 static int awi_cmd_wait(struct awi_softc *); 130 static void awi_cmd_done(struct awi_softc *); 131 static int awi_next_txd(struct awi_softc *, int, uint32_t *, uint32_t *); 132 static int awi_lock(struct awi_softc *); 133 static void awi_unlock(struct awi_softc *); 134 static int awi_intr_lock(struct awi_softc *); 135 static void awi_intr_unlock(struct awi_softc *); 136 static int awi_newstate(struct ieee80211com *, enum ieee80211_state, int); 137 static void awi_recv_mgmt(struct ieee80211com *, struct mbuf *, 138 struct ieee80211_node *, int, int, uint32_t); 139 static int awi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, int, 140 int); 141 static struct mbuf *awi_ether_encap(struct awi_softc *, struct mbuf *); 142 static struct mbuf *awi_ether_modcap(struct awi_softc *, struct mbuf *); 143 144 /* Unaligned little endian access */ 145 #define LE_READ_2(p) \ 146 ((((uint8_t *)(p))[0] ) | (((uint8_t *)(p))[1] << 8)) 147 #define LE_READ_4(p) \ 148 ((((uint8_t *)(p))[0] ) | (((uint8_t *)(p))[1] << 8) | \ 149 (((uint8_t *)(p))[2] << 16) | (((uint8_t *)(p))[3] << 24)) 150 #define LE_WRITE_2(p, v) \ 151 ((((uint8_t *)(p))[0] = (((uint32_t)(v) ) & 0xff)), \ 152 (((uint8_t *)(p))[1] = (((uint32_t)(v) >> 8) & 0xff))) 153 #define LE_WRITE_4(p, v) \ 154 ((((uint8_t *)(p))[0] = (((uint32_t)(v) ) & 0xff)), \ 155 (((uint8_t *)(p))[1] = (((uint32_t)(v) >> 8) & 0xff)), \ 156 (((uint8_t *)(p))[2] = (((uint32_t)(v) >> 16) & 0xff)), \ 157 (((uint8_t *)(p))[3] = (((uint32_t)(v) >> 24) & 0xff))) 158 159 static const struct awi_chanset awi_chanset[] = { 160 /* PHY type domain min max def */ 161 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_JP, 6, 17, 6 }, 162 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_ES, 0, 26, 1 }, 163 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_FR, 0, 32, 1 }, 164 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_US, 0, 77, 1 }, 165 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_CA, 0, 77, 1 }, 166 { AWI_PHY_TYPE_FH, AWI_REG_DOMAIN_EU, 0, 77, 1 }, 167 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_JP, 14, 14, 14 }, 168 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_ES, 10, 11, 10 }, 169 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_FR, 10, 13, 10 }, 170 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_US, 1, 11, 3 }, 171 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_CA, 1, 11, 3 }, 172 { AWI_PHY_TYPE_DS, AWI_REG_DOMAIN_EU, 1, 13, 3 }, 173 { 0, 0, 0, 0, 0 } 174 }; 175 176 #ifdef AWI_DEBUG 177 int awi_debug = 0; 178 179 #define DPRINTF(X) if (awi_debug) printf X 180 #define DPRINTF2(X) if (awi_debug > 1) printf X 181 #else 182 #define DPRINTF(X) 183 #define DPRINTF2(X) 184 #endif 185 186 int 187 awi_attach(struct awi_softc *sc) 188 { 189 struct ieee80211com *ic = &sc->sc_ic; 190 struct ifnet *ifp = &sc->sc_if; 191 int s, i, error, nrate; 192 int mword; 193 enum ieee80211_phymode mode; 194 195 s = splnet(); 196 sc->sc_busy = 1; 197 sc->sc_attached = 0; 198 sc->sc_substate = AWI_ST_NONE; 199 sc->sc_soft_ih = softint_establish(SOFTINT_NET, awi_softintr, sc); 200 if (sc->sc_soft_ih == NULL) { 201 config_deactivate(sc->sc_dev); 202 splx(s); 203 return ENOMEM; 204 } 205 if ((error = awi_hw_init(sc)) != 0) { 206 config_deactivate(sc->sc_dev); 207 splx(s); 208 return error; 209 } 210 error = awi_init_mibs(sc); 211 if (error != 0) { 212 config_deactivate(sc->sc_dev); 213 splx(s); 214 return error; 215 } 216 ifp->if_softc = sc; 217 ifp->if_flags = 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); 279 280 pmf_device_register(sc->sc_dev, NULL, NULL); 281 pmf_class_network_register(sc->sc_dev, ifp); 282 sc->sc_attached = 1; 283 splx(s); 284 285 /* Ready to accept ioctl */ 286 awi_unlock(sc); 287 288 return 0; 289 } 290 291 int 292 awi_detach(struct awi_softc *sc) 293 { 294 struct ieee80211com *ic = &sc->sc_ic; 295 struct ifnet *ifp = &sc->sc_if; 296 int s; 297 298 if (!sc->sc_attached) 299 return 0; 300 301 s = splnet(); 302 awi_stop(ifp, 1); 303 304 while (sc->sc_sleep_cnt > 0) { 305 wakeup(sc); 306 (void)tsleep(sc, PWAIT, "awidet", 1); 307 } 308 sc->sc_attached = 0; 309 ieee80211_ifdetach(ic); 310 if_detach(ifp); 311 shutdownhook_disestablish(sc->sc_sdhook); 312 pmf_device_deregister(sc->sc_dev); 313 softint_disestablish(sc->sc_soft_ih); 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_shutdown(void *arg) 334 { 335 struct awi_softc *sc = arg; 336 struct ifnet *ifp = &sc->sc_if; 337 338 if (sc->sc_attached) 339 awi_stop(ifp, 1); 340 } 341 342 int 343 awi_intr(void *arg) 344 { 345 struct awi_softc *sc = arg; 346 347 if (!sc->sc_enabled || !sc->sc_enab_intr || 348 !device_is_active(sc->sc_dev)) { 349 DPRINTF(("awi_intr: stray interrupt: " 350 "enabled %d enab_intr %d invalid %d\n", 351 sc->sc_enabled, sc->sc_enab_intr, 352 !device_is_active(sc->sc_dev))); 353 return 0; 354 } 355 356 softint_schedule(sc->sc_soft_ih); 357 return 1; 358 } 359 360 static void 361 awi_softintr(void *arg) 362 { 363 struct awi_softc *sc = arg; 364 uint16_t status; 365 int ocansleep; 366 int s; 367 #ifdef AWI_DEBUG 368 static const char *intname[] = { 369 "CMD", "RX", "TX", "SCAN_CMPLT", 370 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 371 "TXDATA", "TXBCAST", "TXPS", "TXCF", 372 "TXMGT", "#13", "RXDATA", "RXMGT" 373 }; 374 #endif 375 376 s = splnet(); 377 am79c930_gcr_setbits(&sc->sc_chip, 378 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 379 awi_write_1(sc, AWI_DIS_PWRDN, 1); 380 ocansleep = sc->sc_cansleep; 381 sc->sc_cansleep = 0; 382 383 for (;;) { 384 if (awi_intr_lock(sc) != 0) 385 break; 386 status = awi_read_1(sc, AWI_INTSTAT); 387 awi_write_1(sc, AWI_INTSTAT, 0); 388 awi_write_1(sc, AWI_INTSTAT, 0); 389 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 390 awi_write_1(sc, AWI_INTSTAT2, 0); 391 DELAY(10); 392 awi_intr_unlock(sc); 393 if (!sc->sc_cmd_inprog) 394 status &= ~AWI_INT_CMD; /* make sure */ 395 if (status == 0) 396 break; 397 #ifdef AWI_DEBUG 398 if (awi_debug > 1) { 399 int i; 400 401 printf("awi_intr: status 0x%04x", status); 402 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 403 i++) { 404 if (status & (1 << i)) 405 printf(" %s", intname[i]); 406 } 407 printf("\n"); 408 } 409 #endif 410 if (status & AWI_INT_RX) 411 awi_rx_int(sc); 412 if (status & AWI_INT_TX) 413 awi_tx_int(sc); 414 if (status & AWI_INT_CMD) 415 awi_cmd_done(sc); 416 if (status & AWI_INT_SCAN_CMPLT) { 417 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 418 sc->sc_substate == AWI_ST_NONE) 419 ieee80211_next_scan(&sc->sc_ic); 420 } 421 } 422 423 sc->sc_cansleep = ocansleep; 424 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 425 awi_write_1(sc, AWI_DIS_PWRDN, 0); 426 splx(s); 427 } 428 429 430 static int 431 awi_init(struct ifnet *ifp) 432 { 433 struct awi_softc *sc = ifp->if_softc; 434 struct ieee80211com *ic = &sc->sc_ic; 435 struct ieee80211_node *ni = ic->ic_bss; 436 struct ieee80211_rateset *rs; 437 int error, rate, i; 438 439 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 440 if (sc->sc_enabled) { 441 awi_stop(ifp, 0); 442 } else { 443 if (sc->sc_enable) 444 (*sc->sc_enable)(sc); 445 sc->sc_enabled = 1; 446 if ((error = awi_hw_init(sc)) != 0) { 447 if (sc->sc_disable) 448 (*sc->sc_disable)(sc); 449 sc->sc_enabled = 0; 450 return error; 451 } 452 } 453 ic->ic_state = IEEE80211_S_INIT; 454 455 ic->ic_flags &= ~IEEE80211_F_IBSSON; 456 switch (ic->ic_opmode) { 457 case IEEE80211_M_STA: 458 sc->sc_mib_local.Network_Mode = 1; 459 sc->sc_mib_local.Acting_as_AP = 0; 460 break; 461 case IEEE80211_M_IBSS: 462 ic->ic_flags |= IEEE80211_F_IBSSON; 463 /* FALLTHRU */ 464 case IEEE80211_M_AHDEMO: 465 sc->sc_mib_local.Network_Mode = 0; 466 sc->sc_mib_local.Acting_as_AP = 0; 467 break; 468 case IEEE80211_M_HOSTAP: 469 sc->sc_mib_local.Network_Mode = 1; 470 sc->sc_mib_local.Acting_as_AP = 1; 471 break; 472 case IEEE80211_M_MONITOR: 473 return ENODEV; 474 } 475 #if 0 476 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 477 #endif 478 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 479 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 480 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 481 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 482 ic->ic_des_esslen); 483 484 /* Configure basic rate */ 485 if (ic->ic_phytype == IEEE80211_T_FH) 486 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 487 else 488 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 489 if (ic->ic_fixed_rate != -1) { 490 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 491 } else { 492 rate = 0; 493 for (i = 0; i < rs->rs_nrates; i++) { 494 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 495 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 496 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 497 } 498 } 499 rate *= 5; 500 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 501 502 if ((error = awi_mode_init(sc)) != 0) { 503 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 504 awi_stop(ifp, 1); 505 return error; 506 } 507 508 /* Start transmitter */ 509 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 510 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 511 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 512 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 513 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 514 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 515 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 516 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 517 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 518 awi_write_4(sc, AWI_CA_TX_MGT, 0); 519 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 520 awi_write_4(sc, AWI_CA_TX_PS, 0); 521 awi_write_4(sc, AWI_CA_TX_CF, 0); 522 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 523 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 524 awi_stop(ifp, 1); 525 return error; 526 } 527 528 /* Start receiver */ 529 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 530 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 531 awi_stop(ifp, 1); 532 return error; 533 } 534 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 535 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 536 537 ifp->if_flags |= IFF_RUNNING; 538 ifp->if_flags &= ~IFF_OACTIVE; 539 ic->ic_state = IEEE80211_S_INIT; 540 541 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 542 ic->ic_opmode == IEEE80211_M_HOSTAP) { 543 ni->ni_chan = ic->ic_ibss_chan; 544 ni->ni_intval = ic->ic_lintval; 545 ni->ni_rssi = 0; 546 ni->ni_rstamp = 0; 547 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 548 ni->ni_rates = 549 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 550 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 551 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 552 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 553 ni->ni_esslen = ic->ic_des_esslen; 554 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 555 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 556 if (ic->ic_phytype == IEEE80211_T_FH) { 557 ni->ni_fhdwell = 200; /* XXX */ 558 ni->ni_fhindex = 1; 559 } 560 } else { 561 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 562 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 563 ni->ni_esslen = 0; 564 } 565 if (ic->ic_flags & IEEE80211_F_PRIVACY) 566 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 567 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 568 ic->ic_flags |= IEEE80211_F_SIBSS; 569 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 570 sc->sc_substate = AWI_ST_NONE; 571 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 572 } else { 573 /* XXX check sc->sc_cur_chan */ 574 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 575 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 576 } 577 return 0; 578 } 579 580 static void 581 awi_stop(struct ifnet *ifp, int disable) 582 { 583 struct awi_softc *sc = ifp->if_softc; 584 585 if (!sc->sc_enabled) 586 return; 587 588 DPRINTF(("awi_stop(%d)\n", disable)); 589 590 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 591 592 if (device_is_active(sc->sc_dev)) { 593 if (sc->sc_cmd_inprog) 594 (void)awi_cmd_wait(sc); 595 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 596 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 597 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 598 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 599 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 600 awi_write_1(sc, AWI_CA_FTX_PS, 0); 601 awi_write_1(sc, AWI_CA_FTX_CF, 0); 602 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 603 } 604 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 605 ifp->if_timer = 0; 606 sc->sc_tx_timer = sc->sc_rx_timer = 0; 607 m_freem(sc->sc_rxpend); 608 sc->sc_rxpend = NULL; 609 IFQ_PURGE(&ifp->if_snd); 610 611 if (disable) { 612 if (device_is_active(sc->sc_dev)) 613 am79c930_gcr_setbits(&sc->sc_chip, 614 AM79C930_GCR_CORESET); 615 if (sc->sc_disable) 616 (*sc->sc_disable)(sc); 617 sc->sc_enabled = 0; 618 } 619 } 620 621 static void 622 awi_start(struct ifnet *ifp) 623 { 624 struct awi_softc *sc = ifp->if_softc; 625 struct ieee80211com *ic = &sc->sc_ic; 626 struct ether_header *eh; 627 struct ieee80211_node *ni; 628 struct ieee80211_frame *wh; 629 struct mbuf *m, *m0; 630 int len, dowep; 631 uint32_t txd, frame, ntxd; 632 uint8_t rate; 633 634 if (!sc->sc_enabled || !device_is_active(sc->sc_dev)) 635 return; 636 637 for (;;) { 638 txd = sc->sc_txnext; 639 IF_POLL(&ic->ic_mgtq, m0); 640 dowep = 0; 641 if (m0 != NULL) { 642 len = m0->m_pkthdr.len; 643 if (awi_next_txd(sc, len, &frame, &ntxd)) { 644 ifp->if_flags |= IFF_OACTIVE; 645 break; 646 } 647 IF_DEQUEUE(&ic->ic_mgtq, m0); 648 ni = M_GETCTX(m0, struct ieee80211_node *); 649 } else { 650 if (ic->ic_state != IEEE80211_S_RUN) 651 break; 652 IFQ_POLL(&ifp->if_snd, m0); 653 if (m0 == NULL) 654 break; 655 /* 656 * Need to calculate the real length to determine 657 * if the transmit buffer has a room for the packet. 658 */ 659 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 660 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 661 len += sizeof(struct llc) - 662 sizeof(struct ether_header); 663 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 664 dowep = 1; 665 len += IEEE80211_WEP_IVLEN + 666 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 667 } 668 if (awi_next_txd(sc, len, &frame, &ntxd)) { 669 ifp->if_flags |= IFF_OACTIVE; 670 break; 671 } 672 IFQ_DEQUEUE(&ifp->if_snd, m0); 673 if_statinc(ifp, if_opackets); 674 bpf_mtap(ifp, m0, BPF_D_OUT); 675 eh = mtod(m0, struct ether_header *); 676 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 677 if (ni == NULL) { 678 if_statinc(ifp, if_oerrors); 679 continue; 680 } 681 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 682 m0 = awi_ether_encap(sc, m0); 683 else { 684 m0 = ieee80211_encap(ic, m0, ni); 685 } 686 if (m0 == NULL) { 687 ieee80211_free_node(ni); 688 if_statinc(ifp, if_oerrors); 689 continue; 690 } 691 wh = mtod(m0, struct ieee80211_frame *); 692 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 693 (ic->ic_opmode == IEEE80211_M_HOSTAP || 694 ic->ic_opmode == IEEE80211_M_IBSS) && 695 sc->sc_adhoc_ap == 0 && 696 (ifp->if_flags & IFF_LINK0) == 0 && 697 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 698 IEEE80211_FC0_TYPE_DATA) { 699 m_freem(m0); 700 ieee80211_free_node(ni); 701 if_statinc(ifp, if_oerrors); 702 continue; 703 } 704 } 705 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 706 if (dowep) { 707 if ((ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 708 m_freem(m0); 709 ieee80211_free_node(ni); 710 if_statinc(ifp, if_oerrors); 711 continue; 712 } 713 } 714 ieee80211_free_node(ni); 715 #ifdef DIAGNOSTIC 716 if (m0->m_pkthdr.len != len) { 717 printf("%s: length %d should be %d\n", 718 sc->sc_if.if_xname, m0->m_pkthdr.len, len); 719 m_freem(m0); 720 if_statinc(ifp, if_oerrors); 721 continue; 722 } 723 #endif 724 725 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 726 ieee80211_dump_pkt(m0->m_data, m0->m_len, 727 ic->ic_bss->ni_rates. 728 rs_rates[ic->ic_bss->ni_txrate] & 729 IEEE80211_RATE_VAL, -1); 730 731 for (m = m0, len = 0; m != NULL; m = m->m_next) { 732 awi_write_bytes(sc, frame + len, mtod(m, uint8_t *), 733 m->m_len); 734 len += m->m_len; 735 } 736 m_freem(m0); 737 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 738 IEEE80211_RATE_VAL) * 5; 739 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 740 awi_write_4(sc, txd + AWI_TXD_START, frame); 741 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 742 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 743 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 744 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 745 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 746 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 747 sc->sc_txnext = ntxd; 748 749 sc->sc_tx_timer = 5; 750 ifp->if_timer = 1; 751 } 752 } 753 754 static void 755 awi_watchdog(struct ifnet *ifp) 756 { 757 struct awi_softc *sc = ifp->if_softc; 758 uint32_t prevdone; 759 int ocansleep; 760 761 ifp->if_timer = 0; 762 if (!sc->sc_enabled || !device_is_active(sc->sc_dev)) 763 return; 764 765 ocansleep = sc->sc_cansleep; 766 sc->sc_cansleep = 0; 767 if (sc->sc_tx_timer) { 768 if (--sc->sc_tx_timer == 0) { 769 printf("%s: device timeout\n", ifp->if_xname); 770 prevdone = sc->sc_txdone; 771 awi_tx_int(sc); 772 if (sc->sc_txdone == prevdone) { 773 if_statinc(ifp, if_oerrors); 774 awi_init(ifp); 775 goto out; 776 } 777 } 778 ifp->if_timer = 1; 779 } 780 if (sc->sc_rx_timer) { 781 if (--sc->sc_rx_timer == 0) { 782 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 783 ieee80211_new_state(&sc->sc_ic, 784 IEEE80211_S_SCAN, -1); 785 goto out; 786 } 787 } else 788 ifp->if_timer = 1; 789 } 790 /* TODO: rate control */ 791 ieee80211_watchdog(&sc->sc_ic); 792 out: 793 sc->sc_cansleep = ocansleep; 794 } 795 796 static int 797 awi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 798 { 799 struct awi_softc *sc = ifp->if_softc; 800 int s, error; 801 802 s = splnet(); 803 /* Serialize ioctl, since we may sleep */ 804 if ((error = awi_lock(sc)) != 0) 805 goto cantlock; 806 807 switch (cmd) { 808 case SIOCSIFFLAGS: 809 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 810 break; 811 if (ifp->if_flags & IFF_UP) { 812 if (sc->sc_enabled) { 813 /* 814 * To avoid rescanning another access point, 815 * do not call awi_init() here. Instead, 816 * only reflect promisc mode settings. 817 */ 818 error = awi_mode_init(sc); 819 } else 820 error = awi_init(ifp); 821 } else if (sc->sc_enabled) 822 awi_stop(ifp, 1); 823 break; 824 case SIOCADDMULTI: 825 case SIOCDELMULTI: 826 error = ether_ioctl(ifp, cmd, data); 827 if (error == ENETRESET) { 828 /* Do not rescan */ 829 if (ifp->if_flags & IFF_RUNNING) 830 error = awi_mode_init(sc); 831 else 832 error = 0; 833 } 834 break; 835 default: 836 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 837 if (error == ENETRESET) { 838 if (sc->sc_enabled) 839 error = awi_init(ifp); 840 else 841 error = 0; 842 } 843 break; 844 } 845 awi_unlock(sc); 846 cantlock: 847 splx(s); 848 return error; 849 } 850 851 /* 852 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 853 * 854 * TBD factor with ieee80211_media_change 855 */ 856 static int 857 awi_media_change(struct ifnet *ifp) 858 { 859 struct awi_softc *sc = ifp->if_softc; 860 struct ieee80211com *ic = &sc->sc_ic; 861 struct ifmedia_entry *ime; 862 enum ieee80211_opmode newmode; 863 int i, rate, newadhoc_ap, error = 0; 864 865 ime = ic->ic_media.ifm_cur; 866 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 867 i = -1; 868 } else { 869 struct ieee80211_rateset *rs = 870 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 871 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 872 rate = ieee80211_media2rate(ime->ifm_media); 873 if (rate == 0) 874 return EINVAL; 875 for (i = 0; i < rs->rs_nrates; i++) { 876 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 877 break; 878 } 879 if (i == rs->rs_nrates) 880 return EINVAL; 881 } 882 if (ic->ic_fixed_rate != i) { 883 ic->ic_fixed_rate = i; 884 error = ENETRESET; 885 } 886 887 /* 888 * Combination of mediaopt 889 * 890 * hostap adhoc flag0 opmode adhoc_ap comment 891 * + - - HOSTAP 0 HostAP 892 * - + - IBSS 0 IBSS 893 * - + + AHDEMO 0 WaveLAN adhoc 894 * - - + IBSS 1 Melco old Sta 895 * also LINK0 896 * - - - STA 0 Infra Station 897 */ 898 newadhoc_ap = 0; 899 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 900 newmode = IEEE80211_M_HOSTAP; 901 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 902 if (ic->ic_phytype == IEEE80211_T_DS && 903 (ime->ifm_media & IFM_FLAG0)) 904 newmode = IEEE80211_M_AHDEMO; 905 else 906 newmode = IEEE80211_M_IBSS; 907 } else if (ime->ifm_media & IFM_FLAG0) { 908 newmode = IEEE80211_M_IBSS; 909 newadhoc_ap = 1; 910 } else 911 newmode = IEEE80211_M_STA; 912 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 913 ic->ic_opmode = newmode; 914 sc->sc_adhoc_ap = newadhoc_ap; 915 error = ENETRESET; 916 } 917 918 if (error == ENETRESET) { 919 if (sc->sc_enabled) 920 error = awi_init(ifp); 921 else 922 error = 0; 923 } 924 return error; 925 } 926 927 static void 928 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 929 { 930 struct awi_softc *sc = ifp->if_softc; 931 struct ieee80211com *ic = &sc->sc_ic; 932 int rate; 933 enum ieee80211_phymode mode; 934 935 imr->ifm_status = IFM_AVALID; 936 if (ic->ic_state == IEEE80211_S_RUN) 937 imr->ifm_status |= IFM_ACTIVE; 938 imr->ifm_active = IFM_IEEE80211; 939 if (ic->ic_phytype == IEEE80211_T_FH) 940 mode = IEEE80211_MODE_FH; 941 else 942 mode = IEEE80211_MODE_11B; 943 if (ic->ic_state == IEEE80211_S_RUN) { 944 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 945 IEEE80211_RATE_VAL; 946 } else { 947 if (ic->ic_fixed_rate == -1) 948 rate = 0; 949 else 950 rate = ic->ic_sup_rates[mode]. 951 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 952 } 953 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 954 switch (ic->ic_opmode) { 955 case IEEE80211_M_MONITOR: /* We should never reach here */ 956 break; 957 case IEEE80211_M_STA: 958 break; 959 case IEEE80211_M_IBSS: 960 if (sc->sc_adhoc_ap) 961 imr->ifm_active |= IFM_FLAG0; 962 else 963 imr->ifm_active |= IFM_IEEE80211_ADHOC; 964 break; 965 case IEEE80211_M_AHDEMO: 966 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 967 break; 968 case IEEE80211_M_HOSTAP: 969 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 970 break; 971 } 972 } 973 974 static int 975 awi_mode_init(struct awi_softc *sc) 976 { 977 struct ethercom *ec = &sc->sc_ec; 978 struct ifnet *ifp = &sc->sc_if; 979 int n, error; 980 struct ether_multi *enm; 981 struct ether_multistep step; 982 983 /* Reinitialize multicast filter */ 984 n = 0; 985 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 986 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 987 (ifp->if_flags & IFF_PROMISC)) { 988 sc->sc_mib_mac.aPromiscuous_Enable = 1; 989 goto set_mib; 990 } 991 sc->sc_mib_mac.aPromiscuous_Enable = 0; 992 ETHER_LOCK(ec); 993 ETHER_FIRST_MULTI(step, ec, enm); 994 while (enm != NULL) { 995 if (n == AWI_GROUP_ADDR_SIZE || 996 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) { 997 ETHER_UNLOCK(ec); 998 goto set_mib; 999 } 1000 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1001 enm->enm_addrlo); 1002 n++; 1003 ETHER_NEXT_MULTI(step, enm); 1004 } 1005 ETHER_UNLOCK(ec); 1006 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1007 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1008 IEEE80211_ADDR_LEN); 1009 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1010 1011 set_mib: 1012 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1013 ifp->if_flags &= ~IFF_ALLMULTI; 1014 else 1015 ifp->if_flags |= IFF_ALLMULTI; 1016 sc->sc_mib_mgt.Wep_Required = 1017 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1018 1019 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1020 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1021 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1022 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1023 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1024 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1025 return error; 1026 } 1027 return 0; 1028 } 1029 1030 static void 1031 awi_rx_int(struct awi_softc *sc) 1032 { 1033 struct ieee80211com *ic = &sc->sc_ic; 1034 struct ifnet *ifp = &sc->sc_if; 1035 struct ieee80211_frame_min *wh; 1036 struct ieee80211_node *ni; 1037 uint8_t state, rate, rssi; 1038 uint16_t len; 1039 uint32_t frame, next, rstamp, rxoff; 1040 struct mbuf *m; 1041 1042 rxoff = sc->sc_rxdoff; 1043 for (;;) { 1044 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1045 if (state & AWI_RXD_ST_OWN) 1046 break; 1047 if (!(state & AWI_RXD_ST_CONSUMED)) { 1048 if (sc->sc_substate != AWI_ST_NONE) 1049 goto rx_next; 1050 if (state & AWI_RXD_ST_RXERROR) { 1051 if_statinc(ifp, if_ierrors); 1052 goto rx_next; 1053 } 1054 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1055 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1056 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1057 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1058 0x7fff; 1059 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1060 m = awi_devget(sc, frame, len); 1061 if (m == NULL) { 1062 if_statinc(ifp, if_ierrors); 1063 goto rx_next; 1064 } 1065 if (state & AWI_RXD_ST_LF) { 1066 /* TODO check my bss */ 1067 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1068 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1069 sc->sc_rx_timer = 10; 1070 ifp->if_timer = 1; 1071 } 1072 if ((ifp->if_flags & IFF_DEBUG) && 1073 (ifp->if_flags & IFF_LINK2)) 1074 ieee80211_dump_pkt(m->m_data, m->m_len, 1075 rate / 5, rssi); 1076 if ((ifp->if_flags & IFF_LINK0) || 1077 sc->sc_adhoc_ap) 1078 m = awi_ether_modcap(sc, m); 1079 else 1080 m = m_pullup(m, sizeof(*wh)); 1081 if (m == NULL) { 1082 if_statinc(ifp, if_ierrors); 1083 goto rx_next; 1084 } 1085 wh = mtod(m, struct ieee80211_frame_min *); 1086 ni = ieee80211_find_rxnode(ic, wh); 1087 ieee80211_input(ic, m, ni, rssi, rstamp); 1088 /* 1089 * The frame may have caused the 1090 * node to be marked for reclamation 1091 * (e.g. in response to a DEAUTH 1092 * message) so use release_node here 1093 * instead of unref_node. 1094 */ 1095 ieee80211_free_node(ni); 1096 } else 1097 sc->sc_rxpend = m; 1098 rx_next: 1099 state |= AWI_RXD_ST_CONSUMED; 1100 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1101 } 1102 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1103 if (next & AWI_RXD_NEXT_LAST) 1104 break; 1105 /* Make sure the next pointer is correct */ 1106 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1107 break; 1108 state |= AWI_RXD_ST_OWN; 1109 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1110 rxoff = next & 0x7fff; 1111 } 1112 sc->sc_rxdoff = rxoff; 1113 } 1114 1115 static void 1116 awi_tx_int(struct awi_softc *sc) 1117 { 1118 struct ifnet *ifp = &sc->sc_if; 1119 uint8_t flags; 1120 1121 while (sc->sc_txdone != sc->sc_txnext) { 1122 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1123 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1124 break; 1125 if (flags & AWI_TXD_ST_ERROR) 1126 if_statinc(ifp, if_oerrors); 1127 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1128 0x7fff; 1129 } 1130 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1131 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1132 sc->sc_tx_timer = 0; 1133 ifp->if_flags &= ~IFF_OACTIVE; 1134 awi_start(ifp); /* in softint */ 1135 } 1136 1137 static struct mbuf * 1138 awi_devget(struct awi_softc *sc, uint32_t off, uint16_t len) 1139 { 1140 struct ifnet *ifp = &sc->sc_if; 1141 struct mbuf *m; 1142 struct mbuf *top, **mp; 1143 u_int tlen; 1144 1145 top = sc->sc_rxpend; 1146 mp = ⊤ 1147 if (top != NULL) { 1148 sc->sc_rxpend = NULL; 1149 top->m_pkthdr.len += len; 1150 m = top; 1151 while (*mp != NULL) { 1152 m = *mp; 1153 mp = &m->m_next; 1154 } 1155 if (m->m_flags & M_EXT) 1156 tlen = m->m_ext.ext_size; 1157 else if (m->m_flags & M_PKTHDR) 1158 tlen = MHLEN; 1159 else 1160 tlen = MLEN; 1161 tlen -= m->m_len; 1162 if (tlen > len) 1163 tlen = len; 1164 awi_read_bytes(sc, off, mtod(m, uint8_t *) + m->m_len, tlen); 1165 off += tlen; 1166 len -= tlen; 1167 } 1168 1169 while (len > 0) { 1170 if (top == NULL) { 1171 MGETHDR(m, M_DONTWAIT, MT_DATA); 1172 if (m == NULL) 1173 return NULL; 1174 m_set_rcvif(m, ifp); 1175 m->m_pkthdr.len = len; 1176 m->m_len = MHLEN; 1177 m->m_flags |= M_HASFCS; 1178 } else { 1179 MGET(m, M_DONTWAIT, MT_DATA); 1180 if (m == NULL) { 1181 m_freem(top); 1182 return NULL; 1183 } 1184 m->m_len = MLEN; 1185 } 1186 if (len >= MINCLSIZE) { 1187 MCLGET(m, M_DONTWAIT); 1188 if (m->m_flags & M_EXT) 1189 m->m_len = m->m_ext.ext_size; 1190 } 1191 if (top == NULL) { 1192 int hdrlen = sizeof(struct ieee80211_frame) + 1193 sizeof(struct llc); 1194 char *newdata = (char *) 1195 ALIGN(m->m_data + hdrlen) - hdrlen; 1196 m->m_len -= newdata - m->m_data; 1197 m->m_data = newdata; 1198 } 1199 if (m->m_len > len) 1200 m->m_len = len; 1201 awi_read_bytes(sc, off, mtod(m, uint8_t *), m->m_len); 1202 off += m->m_len; 1203 len -= m->m_len; 1204 *mp = m; 1205 mp = &m->m_next; 1206 } 1207 return top; 1208 } 1209 1210 /* 1211 * Initialize hardware and start firmware to accept commands. 1212 * Called everytime after power on firmware. 1213 */ 1214 1215 static int 1216 awi_hw_init(struct awi_softc *sc) 1217 { 1218 uint8_t status; 1219 uint16_t intmask; 1220 int i, error; 1221 1222 sc->sc_enab_intr = 0; 1223 awi_drvstate(sc, AWI_DRV_RESET); 1224 1225 /* Reset firmware */ 1226 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1227 DELAY(100); 1228 awi_write_1(sc, AWI_SELFTEST, 0); 1229 awi_write_1(sc, AWI_CMD, 0); 1230 awi_write_1(sc, AWI_BANNER, 0); 1231 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1232 DELAY(100); 1233 1234 /* Wait for selftest completion */ 1235 for (i = 0; ; i++) { 1236 if (!device_is_active(sc->sc_dev)) 1237 return ENXIO; 1238 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1239 printf("%s: failed to complete selftest (timeout)\n", 1240 sc->sc_if.if_xname); 1241 return ENXIO; 1242 } 1243 status = awi_read_1(sc, AWI_SELFTEST); 1244 if ((status & 0xf0) == 0xf0) 1245 break; 1246 if (sc->sc_cansleep) { 1247 sc->sc_sleep_cnt++; 1248 (void)tsleep(sc, PWAIT, "awitst", 1); 1249 sc->sc_sleep_cnt--; 1250 } else { 1251 DELAY(1000*1000/hz); 1252 } 1253 } 1254 if (status != AWI_SELFTEST_PASSED) { 1255 printf("%s: failed to complete selftest (code %x)\n", 1256 sc->sc_if.if_xname, status); 1257 return ENXIO; 1258 } 1259 1260 /* Check banner to confirm firmware write it */ 1261 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1262 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1263 printf("%s: failed to complete selftest (bad banner)\n", 1264 sc->sc_if.if_xname); 1265 for (i = 0; i < AWI_BANNER_LEN; i++) 1266 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1267 printf("\n"); 1268 return ENXIO; 1269 } 1270 1271 /* Initializing interrupt */ 1272 sc->sc_enab_intr = 1; 1273 error = awi_intr_lock(sc); 1274 if (error) 1275 return error; 1276 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1277 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1278 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1279 awi_write_1(sc, AWI_INTMASK2, 0); 1280 awi_write_1(sc, AWI_INTSTAT, 0); 1281 awi_write_1(sc, AWI_INTSTAT2, 0); 1282 awi_intr_unlock(sc); 1283 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1284 1285 /* Issuing interface test command */ 1286 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1287 if (error) { 1288 printf("%s: failed to complete selftest", 1289 sc->sc_if.if_xname); 1290 if (error == ENXIO) 1291 printf(" (no hardware)\n"); 1292 else if (error != EWOULDBLOCK) 1293 printf(" (error %d)\n", error); 1294 else if (sc->sc_cansleep) 1295 printf(" (lost interrupt)\n"); 1296 else 1297 printf(" (command timeout)\n"); 1298 return error; 1299 } 1300 1301 /* Initialize VBM */ 1302 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1303 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1304 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1305 return 0; 1306 } 1307 1308 /* 1309 * Extract the factory default MIB value from firmware and assign the driver 1310 * default value. 1311 * Called once at attaching the interface. 1312 */ 1313 1314 static int 1315 awi_init_mibs(struct awi_softc *sc) 1316 { 1317 int chan, i, error; 1318 struct ieee80211com *ic = &sc->sc_ic; 1319 const struct awi_chanset *cs; 1320 1321 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1322 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1323 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1324 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1325 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1326 printf("%s: failed to get default mib value (error %d)\n", 1327 sc->sc_if.if_xname, error); 1328 return error; 1329 } 1330 1331 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1332 for (cs = awi_chanset; ; cs++) { 1333 if (cs->cs_type == 0) { 1334 printf("%s: failed to set available channel\n", 1335 sc->sc_if.if_xname); 1336 return ENXIO; 1337 } 1338 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1339 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1340 break; 1341 } 1342 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1343 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1344 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1345 setbit(sc->sc_ic.ic_chan_avail, chan); 1346 /* XXX for FHSS, does frequency matter? */ 1347 ic->ic_channels[chan].ic_freq = 0; 1348 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1349 /* 1350 * According to the IEEE 802.11 specification, 1351 * hop pattern parameter for FH phy should be 1352 * incremented by 3 for given hop chanset, i.e., 1353 * the chanset parameter is calculated for given 1354 * hop patter. However, BayStack 650 Access Points 1355 * apparently use fixed hop chanset parameter value 1356 * 1 for any hop pattern. So we also try this 1357 * combination of hop chanset and pattern. 1358 */ 1359 chan = IEEE80211_FH_CHAN(1, i); 1360 setbit(sc->sc_ic.ic_chan_avail, chan); 1361 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1362 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1363 } 1364 } else { 1365 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1366 setbit(sc->sc_ic.ic_chan_avail, i); 1367 ic->ic_channels[i].ic_freq = 1368 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1369 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1370 } 1371 } 1372 sc->sc_cur_chan = cs->cs_def; 1373 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1374 1375 sc->sc_mib_local.Fragmentation_Dis = 1; 1376 sc->sc_mib_local.Add_PLCP_Dis = 0; 1377 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1378 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1379 sc->sc_mib_local.Re_Assembly_Dis = 1; 1380 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1381 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1382 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1383 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1384 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1385 sc->sc_mib_local.Network_Mode = 1; 1386 sc->sc_mib_local.PWD_Lvl = 0; 1387 sc->sc_mib_local.CFP_Mode = 0; 1388 1389 /* Allocate buffers */ 1390 sc->sc_txbase = AWI_BUFFERS; 1391 sc->sc_txend = sc->sc_txbase + 1392 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1393 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1394 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1395 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1396 sc->sc_txend - sc->sc_txbase); 1397 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1398 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1399 AWI_BUFFERS_END - sc->sc_txend); 1400 sc->sc_mib_local.Acting_as_AP = 0; 1401 sc->sc_mib_local.Fill_CFP = 0; 1402 1403 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1404 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1405 1406 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1407 sc->sc_mib_mgt.aDTIM_Period = 1; 1408 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1409 return 0; 1410 } 1411 1412 static int 1413 awi_mib(struct awi_softc *sc, uint8_t cmd, uint8_t mib, int wflag) 1414 { 1415 int error; 1416 uint8_t size, *ptr; 1417 1418 switch (mib) { 1419 case AWI_MIB_LOCAL: 1420 ptr = (uint8_t *)&sc->sc_mib_local; 1421 size = sizeof(sc->sc_mib_local); 1422 break; 1423 case AWI_MIB_ADDR: 1424 ptr = (uint8_t *)&sc->sc_mib_addr; 1425 size = sizeof(sc->sc_mib_addr); 1426 break; 1427 case AWI_MIB_MAC: 1428 ptr = (uint8_t *)&sc->sc_mib_mac; 1429 size = sizeof(sc->sc_mib_mac); 1430 break; 1431 case AWI_MIB_STAT: 1432 ptr = (uint8_t *)&sc->sc_mib_stat; 1433 size = sizeof(sc->sc_mib_stat); 1434 break; 1435 case AWI_MIB_MGT: 1436 ptr = (uint8_t *)&sc->sc_mib_mgt; 1437 size = sizeof(sc->sc_mib_mgt); 1438 break; 1439 case AWI_MIB_PHY: 1440 ptr = (uint8_t *)&sc->sc_mib_phy; 1441 size = sizeof(sc->sc_mib_phy); 1442 break; 1443 default: 1444 return EINVAL; 1445 } 1446 if (sc->sc_cmd_inprog) { 1447 if ((error = awi_cmd_wait(sc)) != 0) { 1448 if (error == EWOULDBLOCK) { 1449 DPRINTF(("awi_mib: cmd %d inprog", 1450 sc->sc_cmd_inprog)); 1451 } 1452 return error; 1453 } 1454 } 1455 sc->sc_cmd_inprog = cmd; 1456 if (cmd == AWI_CMD_SET_MIB) 1457 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1458 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1459 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1460 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1461 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1462 return error; 1463 if (cmd == AWI_CMD_GET_MIB) { 1464 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1465 #ifdef AWI_DEBUG 1466 if (awi_debug) { 1467 int i; 1468 1469 printf("awi_mib: #%d:", mib); 1470 for (i = 0; i < size; i++) 1471 printf(" %02x", ptr[i]); 1472 printf("\n"); 1473 } 1474 #endif 1475 } 1476 return 0; 1477 } 1478 1479 static int 1480 awi_cmd(struct awi_softc *sc, uint8_t cmd, int wflag) 1481 { 1482 uint8_t status; 1483 int error = 0; 1484 #ifdef AWI_DEBUG 1485 static const char *cmdname[] = { 1486 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1487 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1488 }; 1489 #endif 1490 1491 #ifdef AWI_DEBUG 1492 if (awi_debug > 1) { 1493 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1494 printf("awi_cmd: #%d", cmd); 1495 else 1496 printf("awi_cmd: %s", cmdname[cmd]); 1497 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1498 } 1499 #endif 1500 sc->sc_cmd_inprog = cmd; 1501 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1502 awi_write_1(sc, AWI_CMD, cmd); 1503 if (wflag == AWI_NOWAIT) 1504 return EINPROGRESS; 1505 if ((error = awi_cmd_wait(sc)) != 0) 1506 return error; 1507 status = awi_read_1(sc, AWI_CMD_STATUS); 1508 awi_write_1(sc, AWI_CMD, 0); 1509 switch (status) { 1510 case AWI_STAT_OK: 1511 break; 1512 case AWI_STAT_BADPARM: 1513 return EINVAL; 1514 default: 1515 printf("%s: command %d failed %x\n", 1516 sc->sc_if.if_xname, cmd, status); 1517 return ENXIO; 1518 } 1519 return 0; 1520 } 1521 1522 static int 1523 awi_cmd_wait(struct awi_softc *sc) 1524 { 1525 int i, error = 0; 1526 1527 i = 0; 1528 while (sc->sc_cmd_inprog) { 1529 if (!device_is_active(sc->sc_dev)) 1530 return ENXIO; 1531 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1532 printf("%s: failed to access hardware\n", 1533 sc->sc_if.if_xname); 1534 config_deactivate(sc->sc_dev); 1535 return ENXIO; 1536 } 1537 if (sc->sc_cansleep) { 1538 sc->sc_sleep_cnt++; 1539 error = tsleep(sc, PWAIT, "awicmd", 1540 AWI_CMD_TIMEOUT*hz/1000); 1541 sc->sc_sleep_cnt--; 1542 } else { 1543 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1544 awi_cmd_done(sc); 1545 break; 1546 } 1547 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1548 error = EWOULDBLOCK; 1549 else 1550 DELAY(10); 1551 } 1552 if (error) 1553 break; 1554 } 1555 if (error) { 1556 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1557 sc->sc_cmd_inprog, error)); 1558 } 1559 return error; 1560 } 1561 1562 static void 1563 awi_cmd_done(struct awi_softc *sc) 1564 { 1565 uint8_t cmd, status; 1566 1567 status = awi_read_1(sc, AWI_CMD_STATUS); 1568 if (status == AWI_STAT_IDLE) 1569 return; /* stray interrupt */ 1570 1571 cmd = sc->sc_cmd_inprog; 1572 sc->sc_cmd_inprog = 0; 1573 wakeup(sc); 1574 awi_write_1(sc, AWI_CMD, 0); 1575 1576 if (status != AWI_STAT_OK) { 1577 printf("%s: command %d failed %x\n", 1578 sc->sc_if.if_xname, cmd, status); 1579 sc->sc_substate = AWI_ST_NONE; 1580 return; 1581 } 1582 if (sc->sc_substate != AWI_ST_NONE) 1583 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1584 } 1585 1586 static int 1587 awi_next_txd(struct awi_softc *sc, int len, uint32_t *framep, uint32_t *ntxdp) 1588 { 1589 uint32_t txd, ntxd, frame; 1590 1591 txd = sc->sc_txnext; 1592 frame = txd + AWI_TXD_SIZE; 1593 if (frame + len > sc->sc_txend) 1594 frame = sc->sc_txbase; 1595 ntxd = frame + len; 1596 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1597 ntxd = sc->sc_txbase; 1598 *framep = frame; 1599 *ntxdp = ntxd; 1600 /* 1601 * Determine if there are any room in ring buffer. 1602 * --- send wait, === new data, +++ conflict (ENOBUFS) 1603 * base........................end 1604 * done----txd=====ntxd OK 1605 * --txd=====done++++ntxd-- full 1606 * --txd=====ntxd done-- OK 1607 * ==ntxd done----txd=== OK 1608 * ==done++++ntxd----txd=== full 1609 * ++ntxd txd=====done++ full 1610 */ 1611 if (txd < ntxd) { 1612 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1613 return ENOBUFS; 1614 } else { 1615 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1616 return ENOBUFS; 1617 } 1618 return 0; 1619 } 1620 1621 static int 1622 awi_lock(struct awi_softc *sc) 1623 { 1624 int error = 0; 1625 1626 if (curlwp == NULL) { 1627 /* 1628 * XXX 1629 * Though driver ioctl should be called with context, 1630 * KAME ipv6 stack calls ioctl in interrupt for now. 1631 * We simply abort the request if there are other 1632 * ioctl requests in progress. 1633 */ 1634 if (sc->sc_busy) { 1635 if (!device_is_active(sc->sc_dev)) 1636 return ENXIO; 1637 return EWOULDBLOCK; 1638 } 1639 sc->sc_busy = 1; 1640 sc->sc_cansleep = 0; 1641 return 0; 1642 } 1643 while (sc->sc_busy) { 1644 if (!device_is_active(sc->sc_dev)) 1645 return ENXIO; 1646 sc->sc_sleep_cnt++; 1647 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1648 sc->sc_sleep_cnt--; 1649 if (error) 1650 return error; 1651 } 1652 sc->sc_busy = 1; 1653 sc->sc_cansleep = 1; 1654 return 0; 1655 } 1656 1657 static void 1658 awi_unlock(struct awi_softc *sc) 1659 { 1660 sc->sc_busy = 0; 1661 sc->sc_cansleep = 0; 1662 if (sc->sc_sleep_cnt) 1663 wakeup(sc); 1664 } 1665 1666 static int 1667 awi_intr_lock(struct awi_softc *sc) 1668 { 1669 uint8_t status; 1670 int i, retry; 1671 1672 status = 1; 1673 for (retry = 0; retry < 10; retry++) { 1674 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1675 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1676 break; 1677 DELAY(5); 1678 } 1679 if (status != 0) 1680 break; 1681 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1682 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1683 break; 1684 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1685 } 1686 if (status != 0) { 1687 printf("%s: failed to lock interrupt\n", 1688 sc->sc_if.if_xname); 1689 return ENXIO; 1690 } 1691 return 0; 1692 } 1693 1694 static void 1695 awi_intr_unlock(struct awi_softc *sc) 1696 { 1697 1698 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1699 } 1700 1701 static int 1702 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1703 { 1704 struct ifnet *ifp = ic->ic_ifp; 1705 struct awi_softc *sc = ifp->if_softc; 1706 struct ieee80211_node *ni; 1707 int error; 1708 uint8_t newmode; 1709 enum ieee80211_state ostate; 1710 #ifdef AWI_DEBUG 1711 static const char *stname[] = 1712 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1713 static const char *substname[] = 1714 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1715 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1716 #endif /* AWI_DEBUG */ 1717 1718 ostate = ic->ic_state; 1719 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1720 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1721 1722 /* Set LED */ 1723 switch (nstate) { 1724 case IEEE80211_S_INIT: 1725 awi_drvstate(sc, AWI_DRV_RESET); 1726 break; 1727 case IEEE80211_S_SCAN: 1728 if (ic->ic_opmode == IEEE80211_M_IBSS || 1729 ic->ic_opmode == IEEE80211_M_AHDEMO) 1730 awi_drvstate(sc, AWI_DRV_ADHSC); 1731 else 1732 awi_drvstate(sc, AWI_DRV_INFSY); 1733 break; 1734 case IEEE80211_S_AUTH: 1735 awi_drvstate(sc, AWI_DRV_INFSY); 1736 break; 1737 case IEEE80211_S_ASSOC: 1738 awi_drvstate(sc, AWI_DRV_INFAUTH); 1739 break; 1740 case IEEE80211_S_RUN: 1741 if (ic->ic_opmode == IEEE80211_M_IBSS || 1742 ic->ic_opmode == IEEE80211_M_AHDEMO) 1743 awi_drvstate(sc, AWI_DRV_ADHSY); 1744 else 1745 awi_drvstate(sc, AWI_DRV_INFASSOC); 1746 break; 1747 } 1748 1749 if (nstate == IEEE80211_S_INIT) { 1750 sc->sc_substate = AWI_ST_NONE; 1751 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1752 return (*sc->sc_newstate)(ic, nstate, arg); 1753 } 1754 1755 /* State transition */ 1756 if (nstate == IEEE80211_S_SCAN) { 1757 /* SCAN substate */ 1758 if (sc->sc_substate == AWI_ST_NONE) { 1759 sc->sc_nstate = nstate; /* next state in transition */ 1760 sc->sc_substate = AWI_ST_SCAN_INIT; 1761 } 1762 switch (sc->sc_substate) { 1763 case AWI_ST_SCAN_INIT: 1764 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1765 switch (ostate) { 1766 case IEEE80211_S_RUN: 1767 /* Beacon miss */ 1768 if (ifp->if_flags & IFF_DEBUG) 1769 printf("%s: no recent beacons from %s;" 1770 " rescanning\n", 1771 ifp->if_xname, 1772 ether_sprintf(ic->ic_bss->ni_bssid)); 1773 /* FALLTHRU */ 1774 case IEEE80211_S_AUTH: 1775 case IEEE80211_S_ASSOC: 1776 case IEEE80211_S_INIT: 1777 ieee80211_begin_scan(ic, 1); 1778 /* FALLTHRU */ 1779 case IEEE80211_S_SCAN: 1780 /* Scan next */ 1781 break; 1782 } 1783 if (ic->ic_flags & IEEE80211_F_ASCAN) 1784 newmode = AWI_SCAN_ACTIVE; 1785 else 1786 newmode = AWI_SCAN_PASSIVE; 1787 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1788 sc->sc_mib_mgt.aScan_Mode = newmode; 1789 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1790 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1791 break; 1792 } 1793 /* FALLTHRU */ 1794 case AWI_ST_SCAN_SETMIB: 1795 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1796 if (sc->sc_cmd_inprog) { 1797 if ((error = awi_cmd_wait(sc)) != 0) 1798 break; 1799 } 1800 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1801 ni = ic->ic_bss; 1802 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1803 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1804 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1805 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1806 awi_write_1(sc, AWI_CA_SCAN_SET, 1807 IEEE80211_FH_CHANSET( 1808 ieee80211_chan2ieee(ic, ni->ni_chan))); 1809 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1810 IEEE80211_FH_CHANPAT( 1811 ieee80211_chan2ieee(ic, ni->ni_chan))); 1812 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1813 } else { 1814 awi_write_1(sc, AWI_CA_SCAN_SET, 1815 ieee80211_chan2ieee(ic, ni->ni_chan)); 1816 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1817 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1818 } 1819 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1820 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1821 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1822 != 0) 1823 break; 1824 /* FALLTHRU */ 1825 case AWI_ST_SCAN_SCCMD: 1826 ic->ic_state = nstate; 1827 sc->sc_substate = AWI_ST_NONE; 1828 error = EINPROGRESS; 1829 break; 1830 default: 1831 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1832 stname[nstate], substname[sc->sc_substate])); 1833 sc->sc_substate = AWI_ST_NONE; 1834 error = EIO; 1835 break; 1836 } 1837 goto out; 1838 } 1839 1840 if (ostate == IEEE80211_S_SCAN) { 1841 /* Set SSID and channel */ 1842 /* substate */ 1843 if (sc->sc_substate == AWI_ST_NONE) { 1844 sc->sc_nstate = nstate; /* Next state in transition */ 1845 sc->sc_substate = AWI_ST_SUB_INIT; 1846 } 1847 ni = ic->ic_bss; 1848 switch (sc->sc_substate) { 1849 case AWI_ST_SUB_INIT: 1850 sc->sc_substate = AWI_ST_SUB_SETSS; 1851 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1852 ni->ni_bssid); 1853 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1854 AWI_ESS_ID_SIZE); 1855 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1856 IEEE80211_ELEMID_SSID; 1857 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1858 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1859 ni->ni_essid, ni->ni_esslen); 1860 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1861 ni->ni_intval); 1862 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1863 AWI_NOWAIT)) != 0) 1864 break; 1865 /* FALLTHRU */ 1866 case AWI_ST_SUB_SETSS: 1867 sc->sc_substate = AWI_ST_SUB_SYNC; 1868 if (sc->sc_cmd_inprog) { 1869 if ((error = awi_cmd_wait(sc)) != 0) 1870 break; 1871 } 1872 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1873 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1874 awi_write_1(sc, AWI_CA_SYNC_SET, 1875 IEEE80211_FH_CHANSET( 1876 ieee80211_chan2ieee(ic, ni->ni_chan))); 1877 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1878 IEEE80211_FH_CHANPAT( 1879 ieee80211_chan2ieee(ic, ni->ni_chan))); 1880 awi_write_1(sc, AWI_CA_SYNC_IDX, 1881 ni->ni_fhindex); 1882 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1883 ni->ni_fhdwell); 1884 } else { 1885 awi_write_1(sc, AWI_CA_SYNC_SET, 1886 ieee80211_chan2ieee(ic, ni->ni_chan)); 1887 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1888 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1889 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1890 } 1891 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1892 memset(&ni->ni_tstamp, 0, 1893 sizeof(ni->ni_tstamp)); 1894 ni->ni_rstamp = 0; 1895 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1896 } else 1897 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1898 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1899 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1900 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 1901 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1902 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1903 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1904 != 0) 1905 break; 1906 /* FALLTHRU */ 1907 case AWI_ST_SUB_SYNC: 1908 sc->sc_substate = AWI_ST_NONE; 1909 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1910 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1911 AWI_MIB_MGT, AWI_WAIT)) != 0) 1912 break; 1913 IEEE80211_ADDR_COPY(ni->ni_bssid, 1914 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1915 } else { 1916 if (nstate == IEEE80211_S_RUN) { 1917 sc->sc_rx_timer = 10; 1918 ifp->if_timer = 1; 1919 } 1920 } 1921 error = 0; 1922 break; 1923 default: 1924 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1925 stname[nstate], substname[sc->sc_substate])); 1926 sc->sc_substate = AWI_ST_NONE; 1927 error = EIO; 1928 break; 1929 } 1930 goto out; 1931 } 1932 1933 sc->sc_substate = AWI_ST_NONE; 1934 1935 return (*sc->sc_newstate)(ic, nstate, arg); 1936 out: 1937 if (error != 0) { 1938 if (error == EINPROGRESS) 1939 error = 0; 1940 return error; 1941 } 1942 return (*sc->sc_newstate)(ic, nstate, arg); 1943 } 1944 1945 static void 1946 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1947 struct ieee80211_node *ni, 1948 int subtype, int rssi, uint32_t rstamp) 1949 { 1950 struct awi_softc *sc = ic->ic_ifp->if_softc; 1951 1952 /* probe request is handled by hardware */ 1953 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1954 return; 1955 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1956 } 1957 1958 static int 1959 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 1960 int type, int arg) 1961 { 1962 struct awi_softc *sc = ic->ic_ifp->if_softc; 1963 1964 /* Probe request is handled by hardware */ 1965 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1966 return 0; 1967 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 1968 } 1969 1970 static struct mbuf * 1971 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 1972 { 1973 struct ieee80211com *ic = &sc->sc_ic; 1974 struct ieee80211_node *ni = ic->ic_bss; 1975 struct ether_header *eh; 1976 struct ieee80211_frame *wh; 1977 1978 if (m->m_len < sizeof(struct ether_header)) { 1979 m = m_pullup(m, sizeof(struct ether_header)); 1980 if (m == NULL) 1981 return NULL; 1982 } 1983 eh = mtod(m, struct ether_header *); 1984 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 1985 if (m == NULL) 1986 return NULL; 1987 wh = mtod(m, struct ieee80211_frame *); 1988 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 1989 *(uint16_t *)wh->i_dur = 0; 1990 *(uint16_t *)wh->i_seq = 1991 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 1992 ni->ni_txseqs[0]++; 1993 if (ic->ic_opmode == IEEE80211_M_IBSS || 1994 ic->ic_opmode == IEEE80211_M_AHDEMO) { 1995 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 1996 if (sc->sc_adhoc_ap) 1997 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 1998 else 1999 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2000 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2001 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2002 } else { 2003 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2004 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2005 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2006 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2007 } 2008 return m; 2009 } 2010 2011 static struct mbuf * 2012 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2013 { 2014 struct ieee80211com *ic = &sc->sc_ic; 2015 struct ether_header eh; 2016 struct ieee80211_frame wh; 2017 struct llc *llc; 2018 2019 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2020 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2021 if (m == NULL) 2022 return NULL; 2023 } 2024 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2025 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2026 return m; 2027 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2028 m_adj(m, sizeof(eh) - sizeof(*llc)); 2029 if (ic->ic_opmode == IEEE80211_M_IBSS || 2030 ic->ic_opmode == IEEE80211_M_AHDEMO) 2031 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2032 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2033 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2034 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2035 llc->llc_control = LLC_UI; 2036 llc->llc_snap.org_code[0] = 0; 2037 llc->llc_snap.org_code[1] = 0; 2038 llc->llc_snap.org_code[2] = 0; 2039 llc->llc_snap.ether_type = eh.ether_type; 2040 return m; 2041 } 2042
Indexes created Sun Sep 21 20:09:37 GMT 2025