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sys/dev/ic/awi.c
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1 /* $NetBSD: awi.c,v 1.101 2022/09/25 18:43:32 thorpej 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@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@NetBSD.org> 78 */ 79 80 #include <sys/cdefs.h> 81 __KERNEL_RCSID(0, "$NetBSD: awi.c,v 1.101 2022/09/25 18:43:32 thorpej 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 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 softint_disestablish(sc->sc_soft_ih); 315 splx(s); 316 return 0; 317 } 318 319 int 320 awi_activate(device_t self, enum devact act) 321 { 322 struct awi_softc *sc = device_private(self); 323 324 switch (act) { 325 case DVACT_DEACTIVATE: 326 if_deactivate(&sc->sc_if); 327 return 0; 328 default: 329 return EOPNOTSUPP; 330 } 331 } 332 333 void 334 awi_power(int why, void *arg) 335 { 336 struct awi_softc *sc = arg; 337 struct ifnet *ifp = &sc->sc_if; 338 int s; 339 int ocansleep; 340 341 DPRINTF(("awi_power: %d\n", why)); 342 s = splnet(); 343 ocansleep = sc->sc_cansleep; 344 sc->sc_cansleep = 0; 345 switch (why) { 346 case PWR_SUSPEND: 347 case PWR_STANDBY: 348 awi_stop(ifp, 1); 349 break; 350 case PWR_RESUME: 351 if (ifp->if_flags & IFF_UP) { 352 awi_init(ifp); 353 awi_softintr(sc); /* make sure */ 354 } 355 break; 356 case PWR_SOFTSUSPEND: 357 case PWR_SOFTSTANDBY: 358 case PWR_SOFTRESUME: 359 break; 360 } 361 sc->sc_cansleep = ocansleep; 362 splx(s); 363 } 364 365 void 366 awi_shutdown(void *arg) 367 { 368 struct awi_softc *sc = arg; 369 struct ifnet *ifp = &sc->sc_if; 370 371 if (sc->sc_attached) 372 awi_stop(ifp, 1); 373 } 374 375 int 376 awi_intr(void *arg) 377 { 378 struct awi_softc *sc = arg; 379 380 if (!sc->sc_enabled || !sc->sc_enab_intr || 381 !device_is_active(sc->sc_dev)) { 382 DPRINTF(("awi_intr: stray interrupt: " 383 "enabled %d enab_intr %d invalid %d\n", 384 sc->sc_enabled, sc->sc_enab_intr, 385 !device_is_active(sc->sc_dev))); 386 return 0; 387 } 388 389 softint_schedule(sc->sc_soft_ih); 390 return 1; 391 } 392 393 static void 394 awi_softintr(void *arg) 395 { 396 struct awi_softc *sc = arg; 397 uint16_t status; 398 int ocansleep; 399 int s; 400 #ifdef AWI_DEBUG 401 static const char *intname[] = { 402 "CMD", "RX", "TX", "SCAN_CMPLT", 403 "CFP_START", "DTIM", "CFP_ENDING", "GROGGY", 404 "TXDATA", "TXBCAST", "TXPS", "TXCF", 405 "TXMGT", "#13", "RXDATA", "RXMGT" 406 }; 407 #endif 408 409 s = splnet(); 410 am79c930_gcr_setbits(&sc->sc_chip, 411 AM79C930_GCR_DISPWDN | AM79C930_GCR_ECINT); 412 awi_write_1(sc, AWI_DIS_PWRDN, 1); 413 ocansleep = sc->sc_cansleep; 414 sc->sc_cansleep = 0; 415 416 for (;;) { 417 if (awi_intr_lock(sc) != 0) 418 break; 419 status = awi_read_1(sc, AWI_INTSTAT); 420 awi_write_1(sc, AWI_INTSTAT, 0); 421 awi_write_1(sc, AWI_INTSTAT, 0); 422 status |= awi_read_1(sc, AWI_INTSTAT2) << 8; 423 awi_write_1(sc, AWI_INTSTAT2, 0); 424 DELAY(10); 425 awi_intr_unlock(sc); 426 if (!sc->sc_cmd_inprog) 427 status &= ~AWI_INT_CMD; /* make sure */ 428 if (status == 0) 429 break; 430 #ifdef AWI_DEBUG 431 if (awi_debug > 1) { 432 int i; 433 434 printf("awi_intr: status 0x%04x", status); 435 for (i = 0; i < sizeof(intname)/sizeof(intname[0]); 436 i++) { 437 if (status & (1 << i)) 438 printf(" %s", intname[i]); 439 } 440 printf("\n"); 441 } 442 #endif 443 if (status & AWI_INT_RX) 444 awi_rx_int(sc); 445 if (status & AWI_INT_TX) 446 awi_tx_int(sc); 447 if (status & AWI_INT_CMD) 448 awi_cmd_done(sc); 449 if (status & AWI_INT_SCAN_CMPLT) { 450 if (sc->sc_ic.ic_state == IEEE80211_S_SCAN && 451 sc->sc_substate == AWI_ST_NONE) 452 ieee80211_next_scan(&sc->sc_ic); 453 } 454 } 455 456 sc->sc_cansleep = ocansleep; 457 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_DISPWDN); 458 awi_write_1(sc, AWI_DIS_PWRDN, 0); 459 splx(s); 460 } 461 462 463 static int 464 awi_init(struct ifnet *ifp) 465 { 466 struct awi_softc *sc = ifp->if_softc; 467 struct ieee80211com *ic = &sc->sc_ic; 468 struct ieee80211_node *ni = ic->ic_bss; 469 struct ieee80211_rateset *rs; 470 int error, rate, i; 471 472 DPRINTF(("awi_init: enabled=%d\n", sc->sc_enabled)); 473 if (sc->sc_enabled) { 474 awi_stop(ifp, 0); 475 } else { 476 if (sc->sc_enable) 477 (*sc->sc_enable)(sc); 478 sc->sc_enabled = 1; 479 if ((error = awi_hw_init(sc)) != 0) { 480 if (sc->sc_disable) 481 (*sc->sc_disable)(sc); 482 sc->sc_enabled = 0; 483 return error; 484 } 485 } 486 ic->ic_state = IEEE80211_S_INIT; 487 488 ic->ic_flags &= ~IEEE80211_F_IBSSON; 489 switch (ic->ic_opmode) { 490 case IEEE80211_M_STA: 491 sc->sc_mib_local.Network_Mode = 1; 492 sc->sc_mib_local.Acting_as_AP = 0; 493 break; 494 case IEEE80211_M_IBSS: 495 ic->ic_flags |= IEEE80211_F_IBSSON; 496 /* FALLTHRU */ 497 case IEEE80211_M_AHDEMO: 498 sc->sc_mib_local.Network_Mode = 0; 499 sc->sc_mib_local.Acting_as_AP = 0; 500 break; 501 case IEEE80211_M_HOSTAP: 502 sc->sc_mib_local.Network_Mode = 1; 503 sc->sc_mib_local.Acting_as_AP = 1; 504 break; 505 case IEEE80211_M_MONITOR: 506 return ENODEV; 507 } 508 #if 0 509 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 510 #endif 511 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 512 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 513 sc->sc_mib_mac.aDesired_ESS_ID[1] = ic->ic_des_esslen; 514 memcpy(&sc->sc_mib_mac.aDesired_ESS_ID[2], ic->ic_des_essid, 515 ic->ic_des_esslen); 516 517 /* Configure basic rate */ 518 if (ic->ic_phytype == IEEE80211_T_FH) 519 rs = &ic->ic_sup_rates[IEEE80211_MODE_FH]; 520 else 521 rs = &ic->ic_sup_rates[IEEE80211_MODE_11B]; 522 if (ic->ic_fixed_rate != -1) { 523 rate = rs->rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 524 } else { 525 rate = 0; 526 for (i = 0; i < rs->rs_nrates; i++) { 527 if ((rs->rs_rates[i] & IEEE80211_RATE_BASIC) && 528 rate < (rs->rs_rates[i] & IEEE80211_RATE_VAL)) 529 rate = rs->rs_rates[i] & IEEE80211_RATE_VAL; 530 } 531 } 532 rate *= 5; 533 LE_WRITE_2(&sc->sc_mib_mac.aStation_Basic_Rate, rate); 534 535 if ((error = awi_mode_init(sc)) != 0) { 536 DPRINTF(("awi_init: awi_mode_init failed %d\n", error)); 537 awi_stop(ifp, 1); 538 return error; 539 } 540 541 /* Start transmitter */ 542 sc->sc_txdone = sc->sc_txnext = sc->sc_txbase; 543 awi_write_4(sc, sc->sc_txbase + AWI_TXD_START, 0); 544 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NEXT, 0); 545 awi_write_4(sc, sc->sc_txbase + AWI_TXD_LENGTH, 0); 546 awi_write_1(sc, sc->sc_txbase + AWI_TXD_RATE, 0); 547 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NDA, 0); 548 awi_write_4(sc, sc->sc_txbase + AWI_TXD_NRA, 0); 549 awi_write_1(sc, sc->sc_txbase + AWI_TXD_STATE, 0); 550 awi_write_4(sc, AWI_CA_TX_DATA, sc->sc_txbase); 551 awi_write_4(sc, AWI_CA_TX_MGT, 0); 552 awi_write_4(sc, AWI_CA_TX_BCAST, 0); 553 awi_write_4(sc, AWI_CA_TX_PS, 0); 554 awi_write_4(sc, AWI_CA_TX_CF, 0); 555 if ((error = awi_cmd(sc, AWI_CMD_INIT_TX, AWI_WAIT)) != 0) { 556 DPRINTF(("awi_init: failed to start transmitter: %d\n", error)); 557 awi_stop(ifp, 1); 558 return error; 559 } 560 561 /* Start receiver */ 562 if ((error = awi_cmd(sc, AWI_CMD_INIT_RX, AWI_WAIT)) != 0) { 563 DPRINTF(("awi_init: failed to start receiver: %d\n", error)); 564 awi_stop(ifp, 1); 565 return error; 566 } 567 sc->sc_rxdoff = awi_read_4(sc, AWI_CA_IRX_DATA_DESC); 568 sc->sc_rxmoff = awi_read_4(sc, AWI_CA_IRX_PS_DESC); 569 570 ifp->if_flags |= IFF_RUNNING; 571 ifp->if_flags &= ~IFF_OACTIVE; 572 ic->ic_state = IEEE80211_S_INIT; 573 574 if (ic->ic_opmode == IEEE80211_M_AHDEMO || 575 ic->ic_opmode == IEEE80211_M_HOSTAP) { 576 ni->ni_chan = ic->ic_ibss_chan; 577 ni->ni_intval = ic->ic_lintval; 578 ni->ni_rssi = 0; 579 ni->ni_rstamp = 0; 580 memset(&ni->ni_tstamp, 0, sizeof(ni->ni_tstamp)); 581 ni->ni_rates = 582 ic->ic_sup_rates[ieee80211_chan2mode(ic, ni->ni_chan)]; 583 IEEE80211_ADDR_COPY(ni->ni_macaddr, ic->ic_myaddr); 584 if (ic->ic_opmode == IEEE80211_M_HOSTAP) { 585 IEEE80211_ADDR_COPY(ni->ni_bssid, ic->ic_myaddr); 586 ni->ni_esslen = ic->ic_des_esslen; 587 memcpy(ni->ni_essid, ic->ic_des_essid, ni->ni_esslen); 588 ni->ni_capinfo = IEEE80211_CAPINFO_ESS; 589 if (ic->ic_phytype == IEEE80211_T_FH) { 590 ni->ni_fhdwell = 200; /* XXX */ 591 ni->ni_fhindex = 1; 592 } 593 } else { 594 ni->ni_capinfo = IEEE80211_CAPINFO_IBSS; 595 memset(ni->ni_bssid, 0, IEEE80211_ADDR_LEN); 596 ni->ni_esslen = 0; 597 } 598 if (ic->ic_flags & IEEE80211_F_PRIVACY) 599 ni->ni_capinfo |= IEEE80211_CAPINFO_PRIVACY; 600 if (ic->ic_opmode != IEEE80211_M_AHDEMO) 601 ic->ic_flags |= IEEE80211_F_SIBSS; 602 ic->ic_state = IEEE80211_S_SCAN; /*XXX*/ 603 sc->sc_substate = AWI_ST_NONE; 604 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 605 } else { 606 /* XXX check sc->sc_cur_chan */ 607 ni->ni_chan = &ic->ic_channels[sc->sc_cur_chan]; 608 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 609 } 610 return 0; 611 } 612 613 static void 614 awi_stop(struct ifnet *ifp, int disable) 615 { 616 struct awi_softc *sc = ifp->if_softc; 617 618 if (!sc->sc_enabled) 619 return; 620 621 DPRINTF(("awi_stop(%d)\n", disable)); 622 623 ieee80211_new_state(&sc->sc_ic, IEEE80211_S_INIT, -1); 624 625 if (device_is_active(sc->sc_dev)) { 626 if (sc->sc_cmd_inprog) 627 (void)awi_cmd_wait(sc); 628 (void)awi_cmd(sc, AWI_CMD_KILL_RX, AWI_WAIT); 629 sc->sc_cmd_inprog = AWI_CMD_FLUSH_TX; 630 awi_write_1(sc, AWI_CA_FTX_DATA, 1); 631 awi_write_1(sc, AWI_CA_FTX_MGT, 0); 632 awi_write_1(sc, AWI_CA_FTX_BCAST, 0); 633 awi_write_1(sc, AWI_CA_FTX_PS, 0); 634 awi_write_1(sc, AWI_CA_FTX_CF, 0); 635 (void)awi_cmd(sc, AWI_CMD_FLUSH_TX, AWI_WAIT); 636 } 637 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 638 ifp->if_timer = 0; 639 sc->sc_tx_timer = sc->sc_rx_timer = 0; 640 if (sc->sc_rxpend != NULL) { 641 m_freem(sc->sc_rxpend); 642 sc->sc_rxpend = NULL; 643 } 644 IFQ_PURGE(&ifp->if_snd); 645 646 if (disable) { 647 if (device_is_active(sc->sc_dev)) 648 am79c930_gcr_setbits(&sc->sc_chip, 649 AM79C930_GCR_CORESET); 650 if (sc->sc_disable) 651 (*sc->sc_disable)(sc); 652 sc->sc_enabled = 0; 653 } 654 } 655 656 static void 657 awi_start(struct ifnet *ifp) 658 { 659 struct awi_softc *sc = ifp->if_softc; 660 struct ieee80211com *ic = &sc->sc_ic; 661 struct ether_header *eh; 662 struct ieee80211_node *ni; 663 struct ieee80211_frame *wh; 664 struct mbuf *m, *m0; 665 int len, dowep; 666 uint32_t txd, frame, ntxd; 667 uint8_t rate; 668 669 if (!sc->sc_enabled || !device_is_active(sc->sc_dev)) 670 return; 671 672 for (;;) { 673 txd = sc->sc_txnext; 674 IF_POLL(&ic->ic_mgtq, m0); 675 dowep = 0; 676 if (m0 != NULL) { 677 len = m0->m_pkthdr.len; 678 if (awi_next_txd(sc, len, &frame, &ntxd)) { 679 ifp->if_flags |= IFF_OACTIVE; 680 break; 681 } 682 IF_DEQUEUE(&ic->ic_mgtq, m0); 683 ni = M_GETCTX(m0, struct ieee80211_node *); 684 } else { 685 if (ic->ic_state != IEEE80211_S_RUN) 686 break; 687 IFQ_POLL(&ifp->if_snd, m0); 688 if (m0 == NULL) 689 break; 690 /* 691 * Need to calculate the real length to determine 692 * if the transmit buffer has a room for the packet. 693 */ 694 len = m0->m_pkthdr.len + sizeof(struct ieee80211_frame); 695 if (!(ifp->if_flags & IFF_LINK0) && !sc->sc_adhoc_ap) 696 len += sizeof(struct llc) - 697 sizeof(struct ether_header); 698 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 699 dowep = 1; 700 len += IEEE80211_WEP_IVLEN + 701 IEEE80211_WEP_KIDLEN + IEEE80211_WEP_CRCLEN; 702 } 703 if (awi_next_txd(sc, len, &frame, &ntxd)) { 704 ifp->if_flags |= IFF_OACTIVE; 705 break; 706 } 707 IFQ_DEQUEUE(&ifp->if_snd, m0); 708 if_statinc(ifp, if_opackets); 709 bpf_mtap(ifp, m0, BPF_D_OUT); 710 eh = mtod(m0, struct ether_header *); 711 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 712 if (ni == NULL) { 713 if_statinc(ifp, if_oerrors); 714 continue; 715 } 716 if ((ifp->if_flags & IFF_LINK0) || sc->sc_adhoc_ap) 717 m0 = awi_ether_encap(sc, m0); 718 else { 719 m0 = ieee80211_encap(ic, m0, ni); 720 } 721 if (m0 == NULL) { 722 ieee80211_free_node(ni); 723 if_statinc(ifp, if_oerrors); 724 continue; 725 } 726 wh = mtod(m0, struct ieee80211_frame *); 727 if (!IEEE80211_IS_MULTICAST(wh->i_addr1) && 728 (ic->ic_opmode == IEEE80211_M_HOSTAP || 729 ic->ic_opmode == IEEE80211_M_IBSS) && 730 sc->sc_adhoc_ap == 0 && 731 (ifp->if_flags & IFF_LINK0) == 0 && 732 (wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) == 733 IEEE80211_FC0_TYPE_DATA) { 734 m_freem(m0); 735 ieee80211_free_node(ni); 736 if_statinc(ifp, if_oerrors); 737 continue; 738 } 739 } 740 bpf_mtap3(ic->ic_rawbpf, m0, BPF_D_OUT); 741 if (dowep) { 742 if ((ieee80211_crypto_encap(ic, ni, m0)) == NULL) { 743 m_freem(m0); 744 ieee80211_free_node(ni); 745 if_statinc(ifp, if_oerrors); 746 continue; 747 } 748 } 749 ieee80211_free_node(ni); 750 #ifdef DIAGNOSTIC 751 if (m0->m_pkthdr.len != len) { 752 printf("%s: length %d should be %d\n", 753 sc->sc_if.if_xname, m0->m_pkthdr.len, len); 754 m_freem(m0); 755 if_statinc(ifp, if_oerrors); 756 continue; 757 } 758 #endif 759 760 if ((ifp->if_flags & IFF_DEBUG) && (ifp->if_flags & IFF_LINK2)) 761 ieee80211_dump_pkt(m0->m_data, m0->m_len, 762 ic->ic_bss->ni_rates. 763 rs_rates[ic->ic_bss->ni_txrate] & 764 IEEE80211_RATE_VAL, -1); 765 766 for (m = m0, len = 0; m != NULL; m = m->m_next) { 767 awi_write_bytes(sc, frame + len, mtod(m, uint8_t *), 768 m->m_len); 769 len += m->m_len; 770 } 771 m_freem(m0); 772 rate = (ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 773 IEEE80211_RATE_VAL) * 5; 774 awi_write_1(sc, ntxd + AWI_TXD_STATE, 0); 775 awi_write_4(sc, txd + AWI_TXD_START, frame); 776 awi_write_4(sc, txd + AWI_TXD_NEXT, ntxd); 777 awi_write_4(sc, txd + AWI_TXD_LENGTH, len); 778 awi_write_1(sc, txd + AWI_TXD_RATE, rate); 779 awi_write_4(sc, txd + AWI_TXD_NDA, 0); 780 awi_write_4(sc, txd + AWI_TXD_NRA, 0); 781 awi_write_1(sc, txd + AWI_TXD_STATE, AWI_TXD_ST_OWN); 782 sc->sc_txnext = ntxd; 783 784 sc->sc_tx_timer = 5; 785 ifp->if_timer = 1; 786 } 787 } 788 789 static void 790 awi_watchdog(struct ifnet *ifp) 791 { 792 struct awi_softc *sc = ifp->if_softc; 793 uint32_t prevdone; 794 int ocansleep; 795 796 ifp->if_timer = 0; 797 if (!sc->sc_enabled || !device_is_active(sc->sc_dev)) 798 return; 799 800 ocansleep = sc->sc_cansleep; 801 sc->sc_cansleep = 0; 802 if (sc->sc_tx_timer) { 803 if (--sc->sc_tx_timer == 0) { 804 printf("%s: device timeout\n", ifp->if_xname); 805 prevdone = sc->sc_txdone; 806 awi_tx_int(sc); 807 if (sc->sc_txdone == prevdone) { 808 if_statinc(ifp, if_oerrors); 809 awi_init(ifp); 810 goto out; 811 } 812 } 813 ifp->if_timer = 1; 814 } 815 if (sc->sc_rx_timer) { 816 if (--sc->sc_rx_timer == 0) { 817 if (sc->sc_ic.ic_state == IEEE80211_S_RUN) { 818 ieee80211_new_state(&sc->sc_ic, 819 IEEE80211_S_SCAN, -1); 820 goto out; 821 } 822 } else 823 ifp->if_timer = 1; 824 } 825 /* TODO: rate control */ 826 ieee80211_watchdog(&sc->sc_ic); 827 out: 828 sc->sc_cansleep = ocansleep; 829 } 830 831 static int 832 awi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 833 { 834 struct awi_softc *sc = ifp->if_softc; 835 int s, error; 836 837 s = splnet(); 838 /* Serialize ioctl, since we may sleep */ 839 if ((error = awi_lock(sc)) != 0) 840 goto cantlock; 841 842 switch (cmd) { 843 case SIOCSIFFLAGS: 844 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 845 break; 846 if (ifp->if_flags & IFF_UP) { 847 if (sc->sc_enabled) { 848 /* 849 * To avoid rescanning another access point, 850 * do not call awi_init() here. Instead, 851 * only reflect promisc mode settings. 852 */ 853 error = awi_mode_init(sc); 854 } else 855 error = awi_init(ifp); 856 } else if (sc->sc_enabled) 857 awi_stop(ifp, 1); 858 break; 859 case SIOCADDMULTI: 860 case SIOCDELMULTI: 861 error = ether_ioctl(ifp, cmd, data); 862 if (error == ENETRESET) { 863 /* Do not rescan */ 864 if (ifp->if_flags & IFF_RUNNING) 865 error = awi_mode_init(sc); 866 else 867 error = 0; 868 } 869 break; 870 default: 871 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 872 if (error == ENETRESET) { 873 if (sc->sc_enabled) 874 error = awi_init(ifp); 875 else 876 error = 0; 877 } 878 break; 879 } 880 awi_unlock(sc); 881 cantlock: 882 splx(s); 883 return error; 884 } 885 886 /* 887 * Called from ifmedia_ioctl via awi_ioctl with lock obtained. 888 * 889 * TBD factor with ieee80211_media_change 890 */ 891 static int 892 awi_media_change(struct ifnet *ifp) 893 { 894 struct awi_softc *sc = ifp->if_softc; 895 struct ieee80211com *ic = &sc->sc_ic; 896 struct ifmedia_entry *ime; 897 enum ieee80211_opmode newmode; 898 int i, rate, newadhoc_ap, error = 0; 899 900 ime = ic->ic_media.ifm_cur; 901 if (IFM_SUBTYPE(ime->ifm_media) == IFM_AUTO) { 902 i = -1; 903 } else { 904 struct ieee80211_rateset *rs = 905 &ic->ic_sup_rates[(ic->ic_phytype == IEEE80211_T_FH) 906 ? IEEE80211_MODE_FH : IEEE80211_MODE_11B]; 907 rate = ieee80211_media2rate(ime->ifm_media); 908 if (rate == 0) 909 return EINVAL; 910 for (i = 0; i < rs->rs_nrates; i++) { 911 if ((rs->rs_rates[i] & IEEE80211_RATE_VAL) == rate) 912 break; 913 } 914 if (i == rs->rs_nrates) 915 return EINVAL; 916 } 917 if (ic->ic_fixed_rate != i) { 918 ic->ic_fixed_rate = i; 919 error = ENETRESET; 920 } 921 922 /* 923 * Combination of mediaopt 924 * 925 * hostap adhoc flag0 opmode adhoc_ap comment 926 * + - - HOSTAP 0 HostAP 927 * - + - IBSS 0 IBSS 928 * - + + AHDEMO 0 WaveLAN adhoc 929 * - - + IBSS 1 Melco old Sta 930 * also LINK0 931 * - - - STA 0 Infra Station 932 */ 933 newadhoc_ap = 0; 934 if (ime->ifm_media & IFM_IEEE80211_HOSTAP) 935 newmode = IEEE80211_M_HOSTAP; 936 else if (ime->ifm_media & IFM_IEEE80211_ADHOC) { 937 if (ic->ic_phytype == IEEE80211_T_DS && 938 (ime->ifm_media & IFM_FLAG0)) 939 newmode = IEEE80211_M_AHDEMO; 940 else 941 newmode = IEEE80211_M_IBSS; 942 } else if (ime->ifm_media & IFM_FLAG0) { 943 newmode = IEEE80211_M_IBSS; 944 newadhoc_ap = 1; 945 } else 946 newmode = IEEE80211_M_STA; 947 if (ic->ic_opmode != newmode || sc->sc_adhoc_ap != newadhoc_ap) { 948 ic->ic_opmode = newmode; 949 sc->sc_adhoc_ap = newadhoc_ap; 950 error = ENETRESET; 951 } 952 953 if (error == ENETRESET) { 954 if (sc->sc_enabled) 955 error = awi_init(ifp); 956 else 957 error = 0; 958 } 959 return error; 960 } 961 962 static void 963 awi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 964 { 965 struct awi_softc *sc = ifp->if_softc; 966 struct ieee80211com *ic = &sc->sc_ic; 967 int rate; 968 enum ieee80211_phymode mode; 969 970 imr->ifm_status = IFM_AVALID; 971 if (ic->ic_state == IEEE80211_S_RUN) 972 imr->ifm_status |= IFM_ACTIVE; 973 imr->ifm_active = IFM_IEEE80211; 974 if (ic->ic_phytype == IEEE80211_T_FH) 975 mode = IEEE80211_MODE_FH; 976 else 977 mode = IEEE80211_MODE_11B; 978 if (ic->ic_state == IEEE80211_S_RUN) { 979 rate = ic->ic_bss->ni_rates.rs_rates[ic->ic_bss->ni_txrate] & 980 IEEE80211_RATE_VAL; 981 } else { 982 if (ic->ic_fixed_rate == -1) 983 rate = 0; 984 else 985 rate = ic->ic_sup_rates[mode]. 986 rs_rates[ic->ic_fixed_rate] & IEEE80211_RATE_VAL; 987 } 988 imr->ifm_active |= ieee80211_rate2media(ic, rate, mode); 989 switch (ic->ic_opmode) { 990 case IEEE80211_M_MONITOR: /* We should never reach here */ 991 break; 992 case IEEE80211_M_STA: 993 break; 994 case IEEE80211_M_IBSS: 995 if (sc->sc_adhoc_ap) 996 imr->ifm_active |= IFM_FLAG0; 997 else 998 imr->ifm_active |= IFM_IEEE80211_ADHOC; 999 break; 1000 case IEEE80211_M_AHDEMO: 1001 imr->ifm_active |= IFM_IEEE80211_ADHOC | IFM_FLAG0; 1002 break; 1003 case IEEE80211_M_HOSTAP: 1004 imr->ifm_active |= IFM_IEEE80211_HOSTAP; 1005 break; 1006 } 1007 } 1008 1009 static int 1010 awi_mode_init(struct awi_softc *sc) 1011 { 1012 struct ethercom *ec = &sc->sc_ec; 1013 struct ifnet *ifp = &sc->sc_if; 1014 int n, error; 1015 struct ether_multi *enm; 1016 struct ether_multistep step; 1017 1018 /* Reinitialize muticast filter */ 1019 n = 0; 1020 sc->sc_mib_local.Accept_All_Multicast_Dis = 0; 1021 if (sc->sc_ic.ic_opmode != IEEE80211_M_HOSTAP && 1022 (ifp->if_flags & IFF_PROMISC)) { 1023 sc->sc_mib_mac.aPromiscuous_Enable = 1; 1024 goto set_mib; 1025 } 1026 sc->sc_mib_mac.aPromiscuous_Enable = 0; 1027 ETHER_LOCK(ec); 1028 ETHER_FIRST_MULTI(step, ec, enm); 1029 while (enm != NULL) { 1030 if (n == AWI_GROUP_ADDR_SIZE || 1031 !IEEE80211_ADDR_EQ(enm->enm_addrlo, enm->enm_addrhi)) { 1032 ETHER_UNLOCK(ec); 1033 goto set_mib; 1034 } 1035 IEEE80211_ADDR_COPY(sc->sc_mib_addr.aGroup_Addresses[n], 1036 enm->enm_addrlo); 1037 n++; 1038 ETHER_NEXT_MULTI(step, enm); 1039 } 1040 ETHER_UNLOCK(ec); 1041 for (; n < AWI_GROUP_ADDR_SIZE; n++) 1042 memset(sc->sc_mib_addr.aGroup_Addresses[n], 0, 1043 IEEE80211_ADDR_LEN); 1044 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1045 1046 set_mib: 1047 if (sc->sc_mib_local.Accept_All_Multicast_Dis) 1048 ifp->if_flags &= ~IFF_ALLMULTI; 1049 else 1050 ifp->if_flags |= IFF_ALLMULTI; 1051 sc->sc_mib_mgt.Wep_Required = 1052 (sc->sc_ic.ic_flags & IEEE80211_F_PRIVACY) ? AWI_WEP_ON : AWI_WEP_OFF; 1053 1054 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1055 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1056 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1057 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1058 (error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1059 DPRINTF(("awi_mode_init: MIB set failed: %d\n", error)); 1060 return error; 1061 } 1062 return 0; 1063 } 1064 1065 static void 1066 awi_rx_int(struct awi_softc *sc) 1067 { 1068 struct ieee80211com *ic = &sc->sc_ic; 1069 struct ifnet *ifp = &sc->sc_if; 1070 struct ieee80211_frame_min *wh; 1071 struct ieee80211_node *ni; 1072 uint8_t state, rate, rssi; 1073 uint16_t len; 1074 uint32_t frame, next, rstamp, rxoff; 1075 struct mbuf *m; 1076 1077 rxoff = sc->sc_rxdoff; 1078 for (;;) { 1079 state = awi_read_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE); 1080 if (state & AWI_RXD_ST_OWN) 1081 break; 1082 if (!(state & AWI_RXD_ST_CONSUMED)) { 1083 if (sc->sc_substate != AWI_ST_NONE) 1084 goto rx_next; 1085 if (state & AWI_RXD_ST_RXERROR) { 1086 if_statinc(ifp, if_ierrors); 1087 goto rx_next; 1088 } 1089 len = awi_read_2(sc, rxoff + AWI_RXD_LEN); 1090 rate = awi_read_1(sc, rxoff + AWI_RXD_RATE); 1091 rssi = awi_read_1(sc, rxoff + AWI_RXD_RSSI); 1092 frame = awi_read_4(sc, rxoff + AWI_RXD_START_FRAME) & 1093 0x7fff; 1094 rstamp = awi_read_4(sc, rxoff + AWI_RXD_LOCALTIME); 1095 m = awi_devget(sc, frame, len); 1096 if (m == NULL) { 1097 if_statinc(ifp, if_ierrors); 1098 goto rx_next; 1099 } 1100 if (state & AWI_RXD_ST_LF) { 1101 /* TODO check my bss */ 1102 if (!(sc->sc_ic.ic_flags & IEEE80211_F_SIBSS) && 1103 sc->sc_ic.ic_state == IEEE80211_S_RUN) { 1104 sc->sc_rx_timer = 10; 1105 ifp->if_timer = 1; 1106 } 1107 if ((ifp->if_flags & IFF_DEBUG) && 1108 (ifp->if_flags & IFF_LINK2)) 1109 ieee80211_dump_pkt(m->m_data, m->m_len, 1110 rate / 5, rssi); 1111 if ((ifp->if_flags & IFF_LINK0) || 1112 sc->sc_adhoc_ap) 1113 m = awi_ether_modcap(sc, m); 1114 else 1115 m = m_pullup(m, sizeof(*wh)); 1116 if (m == NULL) { 1117 if_statinc(ifp, if_ierrors); 1118 goto rx_next; 1119 } 1120 wh = mtod(m, struct ieee80211_frame_min *); 1121 ni = ieee80211_find_rxnode(ic, wh); 1122 ieee80211_input(ic, m, ni, rssi, rstamp); 1123 /* 1124 * The frame may have caused the 1125 * node to be marked for reclamation 1126 * (e.g. in response to a DEAUTH 1127 * message) so use release_node here 1128 * instead of unref_node. 1129 */ 1130 ieee80211_free_node(ni); 1131 } else 1132 sc->sc_rxpend = m; 1133 rx_next: 1134 state |= AWI_RXD_ST_CONSUMED; 1135 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1136 } 1137 next = awi_read_4(sc, rxoff + AWI_RXD_NEXT); 1138 if (next & AWI_RXD_NEXT_LAST) 1139 break; 1140 /* Make sure the next pointer is correct */ 1141 if (next != awi_read_4(sc, rxoff + AWI_RXD_NEXT)) 1142 break; 1143 state |= AWI_RXD_ST_OWN; 1144 awi_write_1(sc, rxoff + AWI_RXD_HOST_DESC_STATE, state); 1145 rxoff = next & 0x7fff; 1146 } 1147 sc->sc_rxdoff = rxoff; 1148 } 1149 1150 static void 1151 awi_tx_int(struct awi_softc *sc) 1152 { 1153 struct ifnet *ifp = &sc->sc_if; 1154 uint8_t flags; 1155 1156 while (sc->sc_txdone != sc->sc_txnext) { 1157 flags = awi_read_1(sc, sc->sc_txdone + AWI_TXD_STATE); 1158 if ((flags & AWI_TXD_ST_OWN) || !(flags & AWI_TXD_ST_DONE)) 1159 break; 1160 if (flags & AWI_TXD_ST_ERROR) 1161 if_statinc(ifp, if_oerrors); 1162 sc->sc_txdone = awi_read_4(sc, sc->sc_txdone + AWI_TXD_NEXT) & 1163 0x7fff; 1164 } 1165 DPRINTF2(("awi_txint: txdone %d txnext %d txbase %d txend %d\n", 1166 sc->sc_txdone, sc->sc_txnext, sc->sc_txbase, sc->sc_txend)); 1167 sc->sc_tx_timer = 0; 1168 ifp->if_flags &= ~IFF_OACTIVE; 1169 awi_start(ifp); /* in softint */ 1170 } 1171 1172 static struct mbuf * 1173 awi_devget(struct awi_softc *sc, uint32_t off, uint16_t len) 1174 { 1175 struct ifnet *ifp = &sc->sc_if; 1176 struct mbuf *m; 1177 struct mbuf *top, **mp; 1178 u_int tlen; 1179 1180 top = sc->sc_rxpend; 1181 mp = ⊤ 1182 if (top != NULL) { 1183 sc->sc_rxpend = NULL; 1184 top->m_pkthdr.len += len; 1185 m = top; 1186 while (*mp != NULL) { 1187 m = *mp; 1188 mp = &m->m_next; 1189 } 1190 if (m->m_flags & M_EXT) 1191 tlen = m->m_ext.ext_size; 1192 else if (m->m_flags & M_PKTHDR) 1193 tlen = MHLEN; 1194 else 1195 tlen = MLEN; 1196 tlen -= m->m_len; 1197 if (tlen > len) 1198 tlen = len; 1199 awi_read_bytes(sc, off, mtod(m, uint8_t *) + m->m_len, tlen); 1200 off += tlen; 1201 len -= tlen; 1202 } 1203 1204 while (len > 0) { 1205 if (top == NULL) { 1206 MGETHDR(m, M_DONTWAIT, MT_DATA); 1207 if (m == NULL) 1208 return NULL; 1209 m_set_rcvif(m, ifp); 1210 m->m_pkthdr.len = len; 1211 m->m_len = MHLEN; 1212 m->m_flags |= M_HASFCS; 1213 } else { 1214 MGET(m, M_DONTWAIT, MT_DATA); 1215 if (m == NULL) { 1216 m_freem(top); 1217 return NULL; 1218 } 1219 m->m_len = MLEN; 1220 } 1221 if (len >= MINCLSIZE) { 1222 MCLGET(m, M_DONTWAIT); 1223 if (m->m_flags & M_EXT) 1224 m->m_len = m->m_ext.ext_size; 1225 } 1226 if (top == NULL) { 1227 int hdrlen = sizeof(struct ieee80211_frame) + 1228 sizeof(struct llc); 1229 char *newdata = (char *) 1230 ALIGN(m->m_data + hdrlen) - hdrlen; 1231 m->m_len -= newdata - m->m_data; 1232 m->m_data = newdata; 1233 } 1234 if (m->m_len > len) 1235 m->m_len = len; 1236 awi_read_bytes(sc, off, mtod(m, uint8_t *), m->m_len); 1237 off += m->m_len; 1238 len -= m->m_len; 1239 *mp = m; 1240 mp = &m->m_next; 1241 } 1242 return top; 1243 } 1244 1245 /* 1246 * Initialize hardware and start firmware to accept commands. 1247 * Called everytime after power on firmware. 1248 */ 1249 1250 static int 1251 awi_hw_init(struct awi_softc *sc) 1252 { 1253 uint8_t status; 1254 uint16_t intmask; 1255 int i, error; 1256 1257 sc->sc_enab_intr = 0; 1258 awi_drvstate(sc, AWI_DRV_RESET); 1259 1260 /* Reset firmware */ 1261 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1262 DELAY(100); 1263 awi_write_1(sc, AWI_SELFTEST, 0); 1264 awi_write_1(sc, AWI_CMD, 0); 1265 awi_write_1(sc, AWI_BANNER, 0); 1266 am79c930_gcr_clearbits(&sc->sc_chip, AM79C930_GCR_CORESET); 1267 DELAY(100); 1268 1269 /* Wait for selftest completion */ 1270 for (i = 0; ; i++) { 1271 if (!device_is_active(sc->sc_dev)) 1272 return ENXIO; 1273 if (i >= AWI_SELFTEST_TIMEOUT*hz/1000) { 1274 printf("%s: failed to complete selftest (timeout)\n", 1275 sc->sc_if.if_xname); 1276 return ENXIO; 1277 } 1278 status = awi_read_1(sc, AWI_SELFTEST); 1279 if ((status & 0xf0) == 0xf0) 1280 break; 1281 if (sc->sc_cansleep) { 1282 sc->sc_sleep_cnt++; 1283 (void)tsleep(sc, PWAIT, "awitst", 1); 1284 sc->sc_sleep_cnt--; 1285 } else { 1286 DELAY(1000*1000/hz); 1287 } 1288 } 1289 if (status != AWI_SELFTEST_PASSED) { 1290 printf("%s: failed to complete selftest (code %x)\n", 1291 sc->sc_if.if_xname, status); 1292 return ENXIO; 1293 } 1294 1295 /* Check banner to confirm firmware write it */ 1296 awi_read_bytes(sc, AWI_BANNER, sc->sc_banner, AWI_BANNER_LEN); 1297 if (memcmp(sc->sc_banner, "PCnetMobile:", 12) != 0) { 1298 printf("%s: failed to complete selftest (bad banner)\n", 1299 sc->sc_if.if_xname); 1300 for (i = 0; i < AWI_BANNER_LEN; i++) 1301 printf("%s%02x", i ? ":" : "\t", sc->sc_banner[i]); 1302 printf("\n"); 1303 return ENXIO; 1304 } 1305 1306 /* Initializing interrupt */ 1307 sc->sc_enab_intr = 1; 1308 error = awi_intr_lock(sc); 1309 if (error) 1310 return error; 1311 intmask = AWI_INT_GROGGY | AWI_INT_SCAN_CMPLT | 1312 AWI_INT_TX | AWI_INT_RX | AWI_INT_CMD; 1313 awi_write_1(sc, AWI_INTMASK, ~intmask & 0xff); 1314 awi_write_1(sc, AWI_INTMASK2, 0); 1315 awi_write_1(sc, AWI_INTSTAT, 0); 1316 awi_write_1(sc, AWI_INTSTAT2, 0); 1317 awi_intr_unlock(sc); 1318 am79c930_gcr_setbits(&sc->sc_chip, AM79C930_GCR_ENECINT); 1319 1320 /* Issuing interface test command */ 1321 error = awi_cmd(sc, AWI_CMD_NOP, AWI_WAIT); 1322 if (error) { 1323 printf("%s: failed to complete selftest", 1324 sc->sc_if.if_xname); 1325 if (error == ENXIO) 1326 printf(" (no hardware)\n"); 1327 else if (error != EWOULDBLOCK) 1328 printf(" (error %d)\n", error); 1329 else if (sc->sc_cansleep) 1330 printf(" (lost interrupt)\n"); 1331 else 1332 printf(" (command timeout)\n"); 1333 return error; 1334 } 1335 1336 /* Initialize VBM */ 1337 awi_write_1(sc, AWI_VBM_OFFSET, 0); 1338 awi_write_1(sc, AWI_VBM_LENGTH, 1); 1339 awi_write_1(sc, AWI_VBM_BITMAP, 0); 1340 return 0; 1341 } 1342 1343 /* 1344 * Extract the factory default MIB value from firmware and assign the driver 1345 * default value. 1346 * Called once at attaching the interface. 1347 */ 1348 1349 static int 1350 awi_init_mibs(struct awi_softc *sc) 1351 { 1352 int chan, i, error; 1353 struct ieee80211com *ic = &sc->sc_ic; 1354 const struct awi_chanset *cs; 1355 1356 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_LOCAL, AWI_WAIT)) || 1357 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_ADDR, AWI_WAIT)) || 1358 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MAC, AWI_WAIT)) || 1359 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_MGT, AWI_WAIT)) || 1360 (error = awi_mib(sc, AWI_CMD_GET_MIB, AWI_MIB_PHY, AWI_WAIT))) { 1361 printf("%s: failed to get default mib value (error %d)\n", 1362 sc->sc_if.if_xname, error); 1363 return error; 1364 } 1365 1366 memset(&sc->sc_ic.ic_chan_avail, 0, sizeof(sc->sc_ic.ic_chan_avail)); 1367 for (cs = awi_chanset; ; cs++) { 1368 if (cs->cs_type == 0) { 1369 printf("%s: failed to set available channel\n", 1370 sc->sc_if.if_xname); 1371 return ENXIO; 1372 } 1373 if (cs->cs_type == sc->sc_mib_phy.IEEE_PHY_Type && 1374 cs->cs_region == sc->sc_mib_phy.aCurrent_Reg_Domain) 1375 break; 1376 } 1377 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1378 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1379 chan = IEEE80211_FH_CHAN(i % 3 + 1, i); 1380 setbit(sc->sc_ic.ic_chan_avail, chan); 1381 /* XXX for FHSS, does frequency matter? */ 1382 ic->ic_channels[chan].ic_freq = 0; 1383 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1384 /* 1385 * According to the IEEE 802.11 specification, 1386 * hop pattern parameter for FH phy should be 1387 * incremented by 3 for given hop chanset, i.e., 1388 * the chanset parameter is calculated for given 1389 * hop patter. However, BayStack 650 Access Points 1390 * apparently use fixed hop chanset parameter value 1391 * 1 for any hop pattern. So we also try this 1392 * combination of hop chanset and pattern. 1393 */ 1394 chan = IEEE80211_FH_CHAN(1, i); 1395 setbit(sc->sc_ic.ic_chan_avail, chan); 1396 ic->ic_channels[chan].ic_freq = 0; /* XXX */ 1397 ic->ic_channels[chan].ic_flags = IEEE80211_CHAN_FHSS; 1398 } 1399 } else { 1400 for (i = cs->cs_min; i <= cs->cs_max; i++) { 1401 setbit(sc->sc_ic.ic_chan_avail, i); 1402 ic->ic_channels[i].ic_freq = 1403 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 1404 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_B; 1405 } 1406 } 1407 sc->sc_cur_chan = cs->cs_def; 1408 ic->ic_ibss_chan = &ic->ic_channels[cs->cs_def]; 1409 1410 sc->sc_mib_local.Fragmentation_Dis = 1; 1411 sc->sc_mib_local.Add_PLCP_Dis = 0; 1412 sc->sc_mib_local.MAC_Hdr_Prsv = 0; 1413 sc->sc_mib_local.Rx_Mgmt_Que_En = 0; 1414 sc->sc_mib_local.Re_Assembly_Dis = 1; 1415 sc->sc_mib_local.Strip_PLCP_Dis = 0; 1416 sc->sc_mib_local.Power_Saving_Mode_Dis = 1; 1417 sc->sc_mib_local.Accept_All_Multicast_Dis = 1; 1418 sc->sc_mib_local.Check_Seq_Cntl_Dis = 0; 1419 sc->sc_mib_local.Flush_CFP_Queue_On_CF_End = 0; 1420 sc->sc_mib_local.Network_Mode = 1; 1421 sc->sc_mib_local.PWD_Lvl = 0; 1422 sc->sc_mib_local.CFP_Mode = 0; 1423 1424 /* Allocate buffers */ 1425 sc->sc_txbase = AWI_BUFFERS; 1426 sc->sc_txend = sc->sc_txbase + 1427 (AWI_TXD_SIZE + sizeof(struct ieee80211_frame) + 1428 sizeof(struct ether_header) + ETHERMTU) * AWI_NTXBUFS; 1429 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Offset, sc->sc_txbase); 1430 LE_WRITE_4(&sc->sc_mib_local.Tx_Buffer_Size, 1431 sc->sc_txend - sc->sc_txbase); 1432 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Offset, sc->sc_txend); 1433 LE_WRITE_4(&sc->sc_mib_local.Rx_Buffer_Size, 1434 AWI_BUFFERS_END - sc->sc_txend); 1435 sc->sc_mib_local.Acting_as_AP = 0; 1436 sc->sc_mib_local.Fill_CFP = 0; 1437 1438 memset(&sc->sc_mib_mac.aDesired_ESS_ID, 0, AWI_ESS_ID_SIZE); 1439 sc->sc_mib_mac.aDesired_ESS_ID[0] = IEEE80211_ELEMID_SSID; 1440 1441 sc->sc_mib_mgt.aPower_Mgt_Mode = 0; 1442 sc->sc_mib_mgt.aDTIM_Period = 1; 1443 LE_WRITE_2(&sc->sc_mib_mgt.aATIM_Window, 0); 1444 return 0; 1445 } 1446 1447 static int 1448 awi_mib(struct awi_softc *sc, uint8_t cmd, uint8_t mib, int wflag) 1449 { 1450 int error; 1451 uint8_t size, *ptr; 1452 1453 switch (mib) { 1454 case AWI_MIB_LOCAL: 1455 ptr = (uint8_t *)&sc->sc_mib_local; 1456 size = sizeof(sc->sc_mib_local); 1457 break; 1458 case AWI_MIB_ADDR: 1459 ptr = (uint8_t *)&sc->sc_mib_addr; 1460 size = sizeof(sc->sc_mib_addr); 1461 break; 1462 case AWI_MIB_MAC: 1463 ptr = (uint8_t *)&sc->sc_mib_mac; 1464 size = sizeof(sc->sc_mib_mac); 1465 break; 1466 case AWI_MIB_STAT: 1467 ptr = (uint8_t *)&sc->sc_mib_stat; 1468 size = sizeof(sc->sc_mib_stat); 1469 break; 1470 case AWI_MIB_MGT: 1471 ptr = (uint8_t *)&sc->sc_mib_mgt; 1472 size = sizeof(sc->sc_mib_mgt); 1473 break; 1474 case AWI_MIB_PHY: 1475 ptr = (uint8_t *)&sc->sc_mib_phy; 1476 size = sizeof(sc->sc_mib_phy); 1477 break; 1478 default: 1479 return EINVAL; 1480 } 1481 if (sc->sc_cmd_inprog) { 1482 if ((error = awi_cmd_wait(sc)) != 0) { 1483 if (error == EWOULDBLOCK) { 1484 DPRINTF(("awi_mib: cmd %d inprog", 1485 sc->sc_cmd_inprog)); 1486 } 1487 return error; 1488 } 1489 } 1490 sc->sc_cmd_inprog = cmd; 1491 if (cmd == AWI_CMD_SET_MIB) 1492 awi_write_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1493 awi_write_1(sc, AWI_CA_MIB_TYPE, mib); 1494 awi_write_1(sc, AWI_CA_MIB_SIZE, size); 1495 awi_write_1(sc, AWI_CA_MIB_INDEX, 0); 1496 if ((error = awi_cmd(sc, cmd, wflag)) != 0) 1497 return error; 1498 if (cmd == AWI_CMD_GET_MIB) { 1499 awi_read_bytes(sc, AWI_CA_MIB_DATA, ptr, size); 1500 #ifdef AWI_DEBUG 1501 if (awi_debug) { 1502 int i; 1503 1504 printf("awi_mib: #%d:", mib); 1505 for (i = 0; i < size; i++) 1506 printf(" %02x", ptr[i]); 1507 printf("\n"); 1508 } 1509 #endif 1510 } 1511 return 0; 1512 } 1513 1514 static int 1515 awi_cmd(struct awi_softc *sc, uint8_t cmd, int wflag) 1516 { 1517 uint8_t status; 1518 int error = 0; 1519 #ifdef AWI_DEBUG 1520 static const char *cmdname[] = { 1521 "IDLE", "NOP", "SET_MIB", "INIT_TX", "FLUSH_TX", "INIT_RX", 1522 "KILL_RX", "SLEEP", "WAKE", "GET_MIB", "SCAN", "SYNC", "RESUME" 1523 }; 1524 #endif 1525 1526 #ifdef AWI_DEBUG 1527 if (awi_debug > 1) { 1528 if (cmd >= sizeof(cmdname)/sizeof(cmdname[0])) 1529 printf("awi_cmd: #%d", cmd); 1530 else 1531 printf("awi_cmd: %s", cmdname[cmd]); 1532 printf(" %s\n", wflag == AWI_NOWAIT ? "nowait" : "wait"); 1533 } 1534 #endif 1535 sc->sc_cmd_inprog = cmd; 1536 awi_write_1(sc, AWI_CMD_STATUS, AWI_STAT_IDLE); 1537 awi_write_1(sc, AWI_CMD, cmd); 1538 if (wflag == AWI_NOWAIT) 1539 return EINPROGRESS; 1540 if ((error = awi_cmd_wait(sc)) != 0) 1541 return error; 1542 status = awi_read_1(sc, AWI_CMD_STATUS); 1543 awi_write_1(sc, AWI_CMD, 0); 1544 switch (status) { 1545 case AWI_STAT_OK: 1546 break; 1547 case AWI_STAT_BADPARM: 1548 return EINVAL; 1549 default: 1550 printf("%s: command %d failed %x\n", 1551 sc->sc_if.if_xname, cmd, status); 1552 return ENXIO; 1553 } 1554 return 0; 1555 } 1556 1557 static int 1558 awi_cmd_wait(struct awi_softc *sc) 1559 { 1560 int i, error = 0; 1561 1562 i = 0; 1563 while (sc->sc_cmd_inprog) { 1564 if (!device_is_active(sc->sc_dev)) 1565 return ENXIO; 1566 if (awi_read_1(sc, AWI_CMD) != sc->sc_cmd_inprog) { 1567 printf("%s: failed to access hardware\n", 1568 sc->sc_if.if_xname); 1569 config_deactivate(sc->sc_dev); 1570 return ENXIO; 1571 } 1572 if (sc->sc_cansleep) { 1573 sc->sc_sleep_cnt++; 1574 error = tsleep(sc, PWAIT, "awicmd", 1575 AWI_CMD_TIMEOUT*hz/1000); 1576 sc->sc_sleep_cnt--; 1577 } else { 1578 if (awi_read_1(sc, AWI_CMD_STATUS) != AWI_STAT_IDLE) { 1579 awi_cmd_done(sc); 1580 break; 1581 } 1582 if (i++ >= AWI_CMD_TIMEOUT*1000/10) 1583 error = EWOULDBLOCK; 1584 else 1585 DELAY(10); 1586 } 1587 if (error) 1588 break; 1589 } 1590 if (error) { 1591 DPRINTF(("awi_cmd_wait: cmd 0x%x, error %d\n", 1592 sc->sc_cmd_inprog, error)); 1593 } 1594 return error; 1595 } 1596 1597 static void 1598 awi_cmd_done(struct awi_softc *sc) 1599 { 1600 uint8_t cmd, status; 1601 1602 status = awi_read_1(sc, AWI_CMD_STATUS); 1603 if (status == AWI_STAT_IDLE) 1604 return; /* stray interrupt */ 1605 1606 cmd = sc->sc_cmd_inprog; 1607 sc->sc_cmd_inprog = 0; 1608 wakeup(sc); 1609 awi_write_1(sc, AWI_CMD, 0); 1610 1611 if (status != AWI_STAT_OK) { 1612 printf("%s: command %d failed %x\n", 1613 sc->sc_if.if_xname, cmd, status); 1614 sc->sc_substate = AWI_ST_NONE; 1615 return; 1616 } 1617 if (sc->sc_substate != AWI_ST_NONE) 1618 (void)ieee80211_new_state(&sc->sc_ic, sc->sc_nstate, -1); 1619 } 1620 1621 static int 1622 awi_next_txd(struct awi_softc *sc, int len, uint32_t *framep, uint32_t *ntxdp) 1623 { 1624 uint32_t txd, ntxd, frame; 1625 1626 txd = sc->sc_txnext; 1627 frame = txd + AWI_TXD_SIZE; 1628 if (frame + len > sc->sc_txend) 1629 frame = sc->sc_txbase; 1630 ntxd = frame + len; 1631 if (ntxd + AWI_TXD_SIZE > sc->sc_txend) 1632 ntxd = sc->sc_txbase; 1633 *framep = frame; 1634 *ntxdp = ntxd; 1635 /* 1636 * Determine if there are any room in ring buffer. 1637 * --- send wait, === new data, +++ conflict (ENOBUFS) 1638 * base........................end 1639 * done----txd=====ntxd OK 1640 * --txd=====done++++ntxd-- full 1641 * --txd=====ntxd done-- OK 1642 * ==ntxd done----txd=== OK 1643 * ==done++++ntxd----txd=== full 1644 * ++ntxd txd=====done++ full 1645 */ 1646 if (txd < ntxd) { 1647 if (txd < sc->sc_txdone && ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1648 return ENOBUFS; 1649 } else { 1650 if (txd < sc->sc_txdone || ntxd + AWI_TXD_SIZE > sc->sc_txdone) 1651 return ENOBUFS; 1652 } 1653 return 0; 1654 } 1655 1656 static int 1657 awi_lock(struct awi_softc *sc) 1658 { 1659 int error = 0; 1660 1661 if (curlwp == NULL) { 1662 /* 1663 * XXX 1664 * Though driver ioctl should be called with context, 1665 * KAME ipv6 stack calls ioctl in interrupt for now. 1666 * We simply abort the request if there are other 1667 * ioctl requests in progress. 1668 */ 1669 if (sc->sc_busy) { 1670 if (!device_is_active(sc->sc_dev)) 1671 return ENXIO; 1672 return EWOULDBLOCK; 1673 } 1674 sc->sc_busy = 1; 1675 sc->sc_cansleep = 0; 1676 return 0; 1677 } 1678 while (sc->sc_busy) { 1679 if (!device_is_active(sc->sc_dev)) 1680 return ENXIO; 1681 sc->sc_sleep_cnt++; 1682 error = tsleep(sc, PWAIT | PCATCH, "awilck", 0); 1683 sc->sc_sleep_cnt--; 1684 if (error) 1685 return error; 1686 } 1687 sc->sc_busy = 1; 1688 sc->sc_cansleep = 1; 1689 return 0; 1690 } 1691 1692 static void 1693 awi_unlock(struct awi_softc *sc) 1694 { 1695 sc->sc_busy = 0; 1696 sc->sc_cansleep = 0; 1697 if (sc->sc_sleep_cnt) 1698 wakeup(sc); 1699 } 1700 1701 static int 1702 awi_intr_lock(struct awi_softc *sc) 1703 { 1704 uint8_t status; 1705 int i, retry; 1706 1707 status = 1; 1708 for (retry = 0; retry < 10; retry++) { 1709 for (i = 0; i < AWI_LOCKOUT_TIMEOUT*1000/5; i++) { 1710 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1711 break; 1712 DELAY(5); 1713 } 1714 if (status != 0) 1715 break; 1716 awi_write_1(sc, AWI_LOCKOUT_MAC, 1); 1717 if ((status = awi_read_1(sc, AWI_LOCKOUT_HOST)) == 0) 1718 break; 1719 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1720 } 1721 if (status != 0) { 1722 printf("%s: failed to lock interrupt\n", 1723 sc->sc_if.if_xname); 1724 return ENXIO; 1725 } 1726 return 0; 1727 } 1728 1729 static void 1730 awi_intr_unlock(struct awi_softc *sc) 1731 { 1732 1733 awi_write_1(sc, AWI_LOCKOUT_MAC, 0); 1734 } 1735 1736 static int 1737 awi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 1738 { 1739 struct ifnet *ifp = ic->ic_ifp; 1740 struct awi_softc *sc = ifp->if_softc; 1741 struct ieee80211_node *ni; 1742 int error; 1743 uint8_t newmode; 1744 enum ieee80211_state ostate; 1745 #ifdef AWI_DEBUG 1746 static const char *stname[] = 1747 { "INIT", "SCAN", "AUTH", "ASSOC", "RUN" }; 1748 static const char *substname[] = 1749 { "NONE", "SCAN_INIT", "SCAN_SETMIB", "SCAN_SCCMD", 1750 "SUB_INIT", "SUB_SETSS", "SUB_SYNC" }; 1751 #endif /* AWI_DEBUG */ 1752 1753 ostate = ic->ic_state; 1754 DPRINTF(("awi_newstate: %s (%s/%s) -> %s\n", stname[ostate], 1755 stname[sc->sc_nstate], substname[sc->sc_substate], stname[nstate])); 1756 1757 /* Set LED */ 1758 switch (nstate) { 1759 case IEEE80211_S_INIT: 1760 awi_drvstate(sc, AWI_DRV_RESET); 1761 break; 1762 case IEEE80211_S_SCAN: 1763 if (ic->ic_opmode == IEEE80211_M_IBSS || 1764 ic->ic_opmode == IEEE80211_M_AHDEMO) 1765 awi_drvstate(sc, AWI_DRV_ADHSC); 1766 else 1767 awi_drvstate(sc, AWI_DRV_INFSY); 1768 break; 1769 case IEEE80211_S_AUTH: 1770 awi_drvstate(sc, AWI_DRV_INFSY); 1771 break; 1772 case IEEE80211_S_ASSOC: 1773 awi_drvstate(sc, AWI_DRV_INFAUTH); 1774 break; 1775 case IEEE80211_S_RUN: 1776 if (ic->ic_opmode == IEEE80211_M_IBSS || 1777 ic->ic_opmode == IEEE80211_M_AHDEMO) 1778 awi_drvstate(sc, AWI_DRV_ADHSY); 1779 else 1780 awi_drvstate(sc, AWI_DRV_INFASSOC); 1781 break; 1782 } 1783 1784 if (nstate == IEEE80211_S_INIT) { 1785 sc->sc_substate = AWI_ST_NONE; 1786 ic->ic_flags &= ~IEEE80211_F_SIBSS; 1787 return (*sc->sc_newstate)(ic, nstate, arg); 1788 } 1789 1790 /* State transition */ 1791 if (nstate == IEEE80211_S_SCAN) { 1792 /* SCAN substate */ 1793 if (sc->sc_substate == AWI_ST_NONE) { 1794 sc->sc_nstate = nstate; /* next state in transition */ 1795 sc->sc_substate = AWI_ST_SCAN_INIT; 1796 } 1797 switch (sc->sc_substate) { 1798 case AWI_ST_SCAN_INIT: 1799 sc->sc_substate = AWI_ST_SCAN_SETMIB; 1800 switch (ostate) { 1801 case IEEE80211_S_RUN: 1802 /* Beacon miss */ 1803 if (ifp->if_flags & IFF_DEBUG) 1804 printf("%s: no recent beacons from %s;" 1805 " rescanning\n", 1806 ifp->if_xname, 1807 ether_sprintf(ic->ic_bss->ni_bssid)); 1808 /* FALLTHRU */ 1809 case IEEE80211_S_AUTH: 1810 case IEEE80211_S_ASSOC: 1811 case IEEE80211_S_INIT: 1812 ieee80211_begin_scan(ic, 1); 1813 /* FALLTHRU */ 1814 case IEEE80211_S_SCAN: 1815 /* Scan next */ 1816 break; 1817 } 1818 if (ic->ic_flags & IEEE80211_F_ASCAN) 1819 newmode = AWI_SCAN_ACTIVE; 1820 else 1821 newmode = AWI_SCAN_PASSIVE; 1822 if (sc->sc_mib_mgt.aScan_Mode != newmode) { 1823 sc->sc_mib_mgt.aScan_Mode = newmode; 1824 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, 1825 AWI_MIB_MGT, AWI_NOWAIT)) != 0) 1826 break; 1827 } 1828 /* FALLTHRU */ 1829 case AWI_ST_SCAN_SETMIB: 1830 sc->sc_substate = AWI_ST_SCAN_SCCMD; 1831 if (sc->sc_cmd_inprog) { 1832 if ((error = awi_cmd_wait(sc)) != 0) 1833 break; 1834 } 1835 sc->sc_cmd_inprog = AWI_CMD_SCAN; 1836 ni = ic->ic_bss; 1837 awi_write_2(sc, AWI_CA_SCAN_DURATION, 1838 (ic->ic_flags & IEEE80211_F_ASCAN) ? 1839 AWI_ASCAN_DURATION : AWI_PSCAN_DURATION); 1840 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1841 awi_write_1(sc, AWI_CA_SCAN_SET, 1842 IEEE80211_FH_CHANSET( 1843 ieee80211_chan2ieee(ic, ni->ni_chan))); 1844 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 1845 IEEE80211_FH_CHANPAT( 1846 ieee80211_chan2ieee(ic, ni->ni_chan))); 1847 awi_write_1(sc, AWI_CA_SCAN_IDX, 1); 1848 } else { 1849 awi_write_1(sc, AWI_CA_SCAN_SET, 1850 ieee80211_chan2ieee(ic, ni->ni_chan)); 1851 awi_write_1(sc, AWI_CA_SCAN_PATTERN, 0); 1852 awi_write_1(sc, AWI_CA_SCAN_IDX, 0); 1853 } 1854 awi_write_1(sc, AWI_CA_SCAN_SUSP, 0); 1855 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1856 if ((error = awi_cmd(sc, AWI_CMD_SCAN, AWI_NOWAIT)) 1857 != 0) 1858 break; 1859 /* FALLTHRU */ 1860 case AWI_ST_SCAN_SCCMD: 1861 ic->ic_state = nstate; 1862 sc->sc_substate = AWI_ST_NONE; 1863 error = EINPROGRESS; 1864 break; 1865 default: 1866 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1867 stname[nstate], substname[sc->sc_substate])); 1868 sc->sc_substate = AWI_ST_NONE; 1869 error = EIO; 1870 break; 1871 } 1872 goto out; 1873 } 1874 1875 if (ostate == IEEE80211_S_SCAN) { 1876 /* Set SSID and channel */ 1877 /* substate */ 1878 if (sc->sc_substate == AWI_ST_NONE) { 1879 sc->sc_nstate = nstate; /* Next state in transition */ 1880 sc->sc_substate = AWI_ST_SUB_INIT; 1881 } 1882 ni = ic->ic_bss; 1883 switch (sc->sc_substate) { 1884 case AWI_ST_SUB_INIT: 1885 sc->sc_substate = AWI_ST_SUB_SETSS; 1886 IEEE80211_ADDR_COPY(&sc->sc_mib_mgt.aCurrent_BSS_ID, 1887 ni->ni_bssid); 1888 memset(&sc->sc_mib_mgt.aCurrent_ESS_ID, 0, 1889 AWI_ESS_ID_SIZE); 1890 sc->sc_mib_mgt.aCurrent_ESS_ID[0] = 1891 IEEE80211_ELEMID_SSID; 1892 sc->sc_mib_mgt.aCurrent_ESS_ID[1] = ni->ni_esslen; 1893 memcpy(&sc->sc_mib_mgt.aCurrent_ESS_ID[2], 1894 ni->ni_essid, ni->ni_esslen); 1895 LE_WRITE_2(&sc->sc_mib_mgt.aBeacon_Period, 1896 ni->ni_intval); 1897 if ((error = awi_mib(sc, AWI_CMD_SET_MIB, AWI_MIB_MGT, 1898 AWI_NOWAIT)) != 0) 1899 break; 1900 /* FALLTHRU */ 1901 case AWI_ST_SUB_SETSS: 1902 sc->sc_substate = AWI_ST_SUB_SYNC; 1903 if (sc->sc_cmd_inprog) { 1904 if ((error = awi_cmd_wait(sc)) != 0) 1905 break; 1906 } 1907 sc->sc_cmd_inprog = AWI_CMD_SYNC; 1908 if (sc->sc_mib_phy.IEEE_PHY_Type == AWI_PHY_TYPE_FH) { 1909 awi_write_1(sc, AWI_CA_SYNC_SET, 1910 IEEE80211_FH_CHANSET( 1911 ieee80211_chan2ieee(ic, ni->ni_chan))); 1912 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 1913 IEEE80211_FH_CHANPAT( 1914 ieee80211_chan2ieee(ic, ni->ni_chan))); 1915 awi_write_1(sc, AWI_CA_SYNC_IDX, 1916 ni->ni_fhindex); 1917 awi_write_2(sc, AWI_CA_SYNC_DWELL, 1918 ni->ni_fhdwell); 1919 } else { 1920 awi_write_1(sc, AWI_CA_SYNC_SET, 1921 ieee80211_chan2ieee(ic, ni->ni_chan)); 1922 awi_write_1(sc, AWI_CA_SYNC_PATTERN, 0); 1923 awi_write_1(sc, AWI_CA_SYNC_IDX, 0); 1924 awi_write_2(sc, AWI_CA_SYNC_DWELL, 0); 1925 } 1926 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1927 memset(&ni->ni_tstamp, 0, 1928 sizeof(ni->ni_tstamp)); 1929 ni->ni_rstamp = 0; 1930 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 1); 1931 } else 1932 awi_write_1(sc, AWI_CA_SYNC_STARTBSS, 0); 1933 awi_write_2(sc, AWI_CA_SYNC_MBZ, 0); 1934 awi_write_bytes(sc, AWI_CA_SYNC_TIMESTAMP, 1935 ni->ni_tstamp.data, sizeof(ni->ni_tstamp.data)); 1936 awi_write_4(sc, AWI_CA_SYNC_REFTIME, ni->ni_rstamp); 1937 sc->sc_cur_chan = ieee80211_chan2ieee(ic, ni->ni_chan); 1938 if ((error = awi_cmd(sc, AWI_CMD_SYNC, AWI_NOWAIT)) 1939 != 0) 1940 break; 1941 /* FALLTHRU */ 1942 case AWI_ST_SUB_SYNC: 1943 sc->sc_substate = AWI_ST_NONE; 1944 if (ic->ic_flags & IEEE80211_F_SIBSS) { 1945 if ((error = awi_mib(sc, AWI_CMD_GET_MIB, 1946 AWI_MIB_MGT, AWI_WAIT)) != 0) 1947 break; 1948 IEEE80211_ADDR_COPY(ni->ni_bssid, 1949 &sc->sc_mib_mgt.aCurrent_BSS_ID); 1950 } else { 1951 if (nstate == IEEE80211_S_RUN) { 1952 sc->sc_rx_timer = 10; 1953 ifp->if_timer = 1; 1954 } 1955 } 1956 error = 0; 1957 break; 1958 default: 1959 DPRINTF(("awi_newstate: unexpected state %s/%s\n", 1960 stname[nstate], substname[sc->sc_substate])); 1961 sc->sc_substate = AWI_ST_NONE; 1962 error = EIO; 1963 break; 1964 } 1965 goto out; 1966 } 1967 1968 sc->sc_substate = AWI_ST_NONE; 1969 1970 return (*sc->sc_newstate)(ic, nstate, arg); 1971 out: 1972 if (error != 0) { 1973 if (error == EINPROGRESS) 1974 error = 0; 1975 return error; 1976 } 1977 return (*sc->sc_newstate)(ic, nstate, arg); 1978 } 1979 1980 static void 1981 awi_recv_mgmt(struct ieee80211com *ic, struct mbuf *m0, 1982 struct ieee80211_node *ni, 1983 int subtype, int rssi, uint32_t rstamp) 1984 { 1985 struct awi_softc *sc = ic->ic_ifp->if_softc; 1986 1987 /* probe request is handled by hardware */ 1988 if (subtype == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 1989 return; 1990 (*sc->sc_recv_mgmt)(ic, m0, ni, subtype, rssi, rstamp); 1991 } 1992 1993 static int 1994 awi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, 1995 int type, int arg) 1996 { 1997 struct awi_softc *sc = ic->ic_ifp->if_softc; 1998 1999 /* Probe request is handled by hardware */ 2000 if (type == IEEE80211_FC0_SUBTYPE_PROBE_REQ) 2001 return 0; 2002 return (*sc->sc_send_mgmt)(ic, ni, type, arg); 2003 } 2004 2005 static struct mbuf * 2006 awi_ether_encap(struct awi_softc *sc, struct mbuf *m) 2007 { 2008 struct ieee80211com *ic = &sc->sc_ic; 2009 struct ieee80211_node *ni = ic->ic_bss; 2010 struct ether_header *eh; 2011 struct ieee80211_frame *wh; 2012 2013 if (m->m_len < sizeof(struct ether_header)) { 2014 m = m_pullup(m, sizeof(struct ether_header)); 2015 if (m == NULL) 2016 return NULL; 2017 } 2018 eh = mtod(m, struct ether_header *); 2019 M_PREPEND(m, sizeof(struct ieee80211_frame), M_DONTWAIT); 2020 if (m == NULL) 2021 return NULL; 2022 wh = mtod(m, struct ieee80211_frame *); 2023 wh->i_fc[0] = IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA; 2024 *(uint16_t *)wh->i_dur = 0; 2025 *(uint16_t *)wh->i_seq = 2026 htole16(ni->ni_txseqs[0] << IEEE80211_SEQ_SEQ_SHIFT); 2027 ni->ni_txseqs[0]++; 2028 if (ic->ic_opmode == IEEE80211_M_IBSS || 2029 ic->ic_opmode == IEEE80211_M_AHDEMO) { 2030 wh->i_fc[1] = IEEE80211_FC1_DIR_NODS; 2031 if (sc->sc_adhoc_ap) 2032 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_macaddr); 2033 else 2034 IEEE80211_ADDR_COPY(wh->i_addr1, eh->ether_dhost); 2035 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2036 IEEE80211_ADDR_COPY(wh->i_addr3, ni->ni_bssid); 2037 } else { 2038 wh->i_fc[1] = IEEE80211_FC1_DIR_TODS; 2039 IEEE80211_ADDR_COPY(wh->i_addr1, ni->ni_bssid); 2040 IEEE80211_ADDR_COPY(wh->i_addr2, eh->ether_shost); 2041 IEEE80211_ADDR_COPY(wh->i_addr3, eh->ether_dhost); 2042 } 2043 return m; 2044 } 2045 2046 static struct mbuf * 2047 awi_ether_modcap(struct awi_softc *sc, struct mbuf *m) 2048 { 2049 struct ieee80211com *ic = &sc->sc_ic; 2050 struct ether_header eh; 2051 struct ieee80211_frame wh; 2052 struct llc *llc; 2053 2054 if (m->m_len < sizeof(wh) + sizeof(eh)) { 2055 m = m_pullup(m, sizeof(wh) + sizeof(eh)); 2056 if (m == NULL) 2057 return NULL; 2058 } 2059 memcpy(&wh, mtod(m, void *), sizeof(wh)); 2060 if (wh.i_fc[0] != (IEEE80211_FC0_VERSION_0 | IEEE80211_FC0_TYPE_DATA)) 2061 return m; 2062 memcpy(&eh, mtod(m, char *) + sizeof(wh), sizeof(eh)); 2063 m_adj(m, sizeof(eh) - sizeof(*llc)); 2064 if (ic->ic_opmode == IEEE80211_M_IBSS || 2065 ic->ic_opmode == IEEE80211_M_AHDEMO) 2066 IEEE80211_ADDR_COPY(wh.i_addr2, eh.ether_shost); 2067 memcpy(mtod(m, void *), &wh, sizeof(wh)); 2068 llc = (struct llc *)(mtod(m, char *) + sizeof(wh)); 2069 llc->llc_dsap = llc->llc_ssap = LLC_SNAP_LSAP; 2070 llc->llc_control = LLC_UI; 2071 llc->llc_snap.org_code[0] = 0; 2072 llc->llc_snap.org_code[1] = 0; 2073 llc->llc_snap.org_code[2] = 0; 2074 llc->llc_snap.ether_type = eh.ether_type; 2075 return m; 2076 }
Cache object: b119f973e262721b8e4d25b7aeeed3b3
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