1 /* $OpenBSD: if_iwi.c,v 1.147 2022/04/21 21:03:03 stsp Exp $ */ 2 3 /*- 4 * Copyright (c) 2004-2008 5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 /* 21 * Driver for Intel PRO/Wireless 2200BG/2915ABG 802.11 network adapters. 22 */ 23 24 #include "bpfilter.h" 25 26 #include <sys/param.h> 27 #include <sys/sockio.h> 28 #include <sys/mbuf.h> 29 #include <sys/kernel.h> 30 #include <sys/rwlock.h> 31 #include <sys/socket.h> 32 #include <sys/systm.h> 33 #include <sys/conf.h> 34 #include <sys/device.h> 35 #include <sys/task.h> 36 #include <sys/endian.h> 37 38 #include <machine/bus.h> 39 #include <machine/intr.h> 40 41 #include <dev/pci/pcireg.h> 42 #include <dev/pci/pcivar.h> 43 #include <dev/pci/pcidevs.h> 44 45 #if NBPFILTER > 0 46 #include <net/bpf.h> 47 #endif 48 #include <net/if.h> 49 #include <net/if_dl.h> 50 #include <net/if_media.h> 51 52 #include <netinet/in.h> 53 #include <netinet/if_ether.h> 54 55 #include <net80211/ieee80211_var.h> 56 #include <net80211/ieee80211_radiotap.h> 57 58 #include <dev/pci/if_iwireg.h> 59 #include <dev/pci/if_iwivar.h> 60 61 const struct pci_matchid iwi_devices[] = { 62 { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_PRO_WL_2200BG }, 63 { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_PRO_WL_2225BG }, 64 { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 }, 65 { PCI_VENDOR_INTEL, PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2 } 66 }; 67 68 int iwi_match(struct device *, void *, void *); 69 void iwi_attach(struct device *, struct device *, void *); 70 int iwi_activate(struct device *, int); 71 void iwi_wakeup(struct iwi_softc *); 72 void iwi_init_task(void *); 73 int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 74 void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 75 void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 76 int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 77 int); 78 void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 79 void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 80 int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 81 void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 82 void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 83 int iwi_media_change(struct ifnet *); 84 void iwi_media_status(struct ifnet *, struct ifmediareq *); 85 uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 86 int iwi_find_txnode(struct iwi_softc *, const uint8_t *); 87 int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 88 uint8_t iwi_rate(int); 89 void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, 90 struct iwi_frame *, struct mbuf_list *); 91 void iwi_notification_intr(struct iwi_softc *, struct iwi_rx_data *, 92 struct iwi_notif *); 93 void iwi_rx_intr(struct iwi_softc *); 94 void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *); 95 int iwi_intr(void *); 96 int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t, int); 97 int iwi_send_mgmt(struct ieee80211com *, struct ieee80211_node *, 98 int, int, int); 99 int iwi_tx_start(struct ifnet *, struct mbuf *, 100 struct ieee80211_node *); 101 void iwi_start(struct ifnet *); 102 void iwi_watchdog(struct ifnet *); 103 int iwi_ioctl(struct ifnet *, u_long, caddr_t); 104 void iwi_stop_master(struct iwi_softc *); 105 int iwi_reset(struct iwi_softc *); 106 int iwi_load_ucode(struct iwi_softc *, const char *, int); 107 int iwi_load_firmware(struct iwi_softc *, const char *, int); 108 int iwi_config(struct iwi_softc *); 109 void iwi_update_edca(struct ieee80211com *); 110 int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 111 int iwi_scan(struct iwi_softc *); 112 int iwi_auth_and_assoc(struct iwi_softc *); 113 int iwi_init(struct ifnet *); 114 void iwi_stop(struct ifnet *, int); 115 116 static __inline uint8_t 117 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 118 { 119 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 120 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 121 } 122 123 static __inline uint32_t 124 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 125 { 126 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 127 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 128 } 129 130 #ifdef IWI_DEBUG 131 #define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0) 132 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0) 133 int iwi_debug = 0; 134 #else 135 #define DPRINTF(x) 136 #define DPRINTFN(n, x) 137 #endif 138 139 const struct cfattach iwi_ca = { 140 sizeof (struct iwi_softc), iwi_match, iwi_attach, NULL, 141 iwi_activate 142 }; 143 144 int 145 iwi_match(struct device *parent, void *match, void *aux) 146 { 147 return pci_matchbyid((struct pci_attach_args *)aux, iwi_devices, 148 nitems(iwi_devices)); 149 } 150 151 /* Base Address Register */ 152 #define IWI_PCI_BAR0 0x10 153 154 void 155 iwi_attach(struct device *parent, struct device *self, void *aux) 156 { 157 struct iwi_softc *sc = (struct iwi_softc *)self; 158 struct ieee80211com *ic = &sc->sc_ic; 159 struct ifnet *ifp = &ic->ic_if; 160 struct pci_attach_args *pa = aux; 161 const char *intrstr; 162 bus_space_tag_t memt; 163 bus_space_handle_t memh; 164 pci_intr_handle_t ih; 165 pcireg_t data; 166 uint16_t val; 167 int error, ac, i; 168 169 sc->sc_pct = pa->pa_pc; 170 sc->sc_pcitag = pa->pa_tag; 171 172 /* clear device specific PCI configuration register 0x41 */ 173 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 174 data &= ~0x0000ff00; 175 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 176 177 /* map the register window */ 178 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 179 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz, 0); 180 if (error != 0) { 181 printf(": can't map mem space\n"); 182 return; 183 } 184 185 sc->sc_st = memt; 186 sc->sc_sh = memh; 187 sc->sc_dmat = pa->pa_dmat; 188 189 if (pci_intr_map(pa, &ih) != 0) { 190 printf(": can't map interrupt\n"); 191 return; 192 } 193 194 intrstr = pci_intr_string(sc->sc_pct, ih); 195 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc, 196 sc->sc_dev.dv_xname); 197 if (sc->sc_ih == NULL) { 198 printf(": can't establish interrupt"); 199 if (intrstr != NULL) 200 printf(" at %s", intrstr); 201 printf("\n"); 202 return; 203 } 204 printf(": %s", intrstr); 205 206 if (iwi_reset(sc) != 0) { 207 printf(": could not reset adapter\n"); 208 return; 209 } 210 211 /* 212 * Allocate rings. 213 */ 214 if (iwi_alloc_cmd_ring(sc, &sc->cmdq) != 0) { 215 printf(": could not allocate Cmd ring\n"); 216 return; 217 } 218 for (ac = 0; ac < EDCA_NUM_AC; ac++) { 219 if (iwi_alloc_tx_ring(sc, &sc->txq[ac], ac) != 0) { 220 printf(": could not allocate Tx ring %d\n", ac); 221 goto fail; 222 } 223 } 224 if (iwi_alloc_rx_ring(sc, &sc->rxq) != 0) { 225 printf(": could not allocate Rx ring\n"); 226 goto fail; 227 } 228 229 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 230 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 231 ic->ic_state = IEEE80211_S_INIT; 232 233 /* set device capabilities */ 234 ic->ic_caps = 235 #ifndef IEEE80211_STA_ONLY 236 IEEE80211_C_IBSS | /* IBSS mode supported */ 237 #endif 238 IEEE80211_C_MONITOR | /* monitor mode supported */ 239 IEEE80211_C_TXPMGT | /* tx power management */ 240 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 241 IEEE80211_C_SHSLOT | /* short slot time supported */ 242 IEEE80211_C_WEP | /* s/w WEP */ 243 IEEE80211_C_RSN | /* WPA/RSN supported */ 244 IEEE80211_C_SCANALL; /* h/w scanning */ 245 246 /* read MAC address from EEPROM */ 247 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 248 ic->ic_myaddr[0] = val & 0xff; 249 ic->ic_myaddr[1] = val >> 8; 250 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 251 ic->ic_myaddr[2] = val & 0xff; 252 ic->ic_myaddr[3] = val >> 8; 253 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 254 ic->ic_myaddr[4] = val & 0xff; 255 ic->ic_myaddr[5] = val >> 8; 256 257 printf(", address %s\n", ether_sprintf(ic->ic_myaddr)); 258 259 if (PCI_PRODUCT(pa->pa_id) >= PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1) { 260 /* set supported .11a rates */ 261 ic->ic_sup_rates[IEEE80211_MODE_11A] = 262 ieee80211_std_rateset_11a; 263 264 /* set supported .11a channels */ 265 for (i = 36; i <= 64; i += 4) { 266 ic->ic_channels[i].ic_freq = 267 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 268 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 269 } 270 for (i = 149; i <= 165; i += 4) { 271 ic->ic_channels[i].ic_freq = 272 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 273 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 274 } 275 } 276 277 /* set supported .11b and .11g rates */ 278 ic->ic_sup_rates[IEEE80211_MODE_11B] = ieee80211_std_rateset_11b; 279 ic->ic_sup_rates[IEEE80211_MODE_11G] = ieee80211_std_rateset_11g; 280 281 /* set supported .11b and .11g channels (1 through 14) */ 282 for (i = 1; i <= 14; i++) { 283 ic->ic_channels[i].ic_freq = 284 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 285 ic->ic_channels[i].ic_flags = 286 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 287 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 288 } 289 290 /* IBSS channel undefined for now */ 291 ic->ic_ibss_chan = &ic->ic_channels[0]; 292 293 ifp->if_softc = sc; 294 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 295 ifp->if_ioctl = iwi_ioctl; 296 ifp->if_start = iwi_start; 297 ifp->if_watchdog = iwi_watchdog; 298 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 299 300 if_attach(ifp); 301 ieee80211_ifattach(ifp); 302 /* override state transition machine */ 303 sc->sc_newstate = ic->ic_newstate; 304 ic->ic_newstate = iwi_newstate; 305 ic->ic_send_mgmt = iwi_send_mgmt; 306 ieee80211_media_init(ifp, iwi_media_change, iwi_media_status); 307 308 #if NBPFILTER > 0 309 bpfattach(&sc->sc_drvbpf, ifp, DLT_IEEE802_11_RADIO, 310 sizeof (struct ieee80211_frame) + IEEE80211_RADIOTAP_HDRLEN); 311 312 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 313 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 314 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 315 316 sc->sc_txtap_len = sizeof sc->sc_txtapu; 317 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 318 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 319 #endif 320 321 rw_init(&sc->sc_rwlock, "iwilock"); 322 task_set(&sc->init_task, iwi_init_task, sc); 323 return; 324 325 fail: while (--ac >= 0) 326 iwi_free_tx_ring(sc, &sc->txq[ac]); 327 iwi_free_cmd_ring(sc, &sc->cmdq); 328 } 329 330 int 331 iwi_activate(struct device *self, int act) 332 { 333 struct iwi_softc *sc = (struct iwi_softc *)self; 334 struct ifnet *ifp = &sc->sc_ic.ic_if; 335 336 switch (act) { 337 case DVACT_SUSPEND: 338 if (ifp->if_flags & IFF_RUNNING) 339 iwi_stop(ifp, 0); 340 break; 341 case DVACT_WAKEUP: 342 iwi_wakeup(sc); 343 break; 344 } 345 346 return 0; 347 } 348 349 void 350 iwi_wakeup(struct iwi_softc *sc) 351 { 352 pcireg_t data; 353 354 /* clear device specific PCI configuration register 0x41 */ 355 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, 0x40); 356 data &= ~0x0000ff00; 357 pci_conf_write(sc->sc_pct, sc->sc_pcitag, 0x40, data); 358 359 iwi_init_task(sc); 360 } 361 362 void 363 iwi_init_task(void *arg1) 364 { 365 struct iwi_softc *sc = arg1; 366 struct ifnet *ifp = &sc->sc_ic.ic_if; 367 int s; 368 369 rw_enter_write(&sc->sc_rwlock); 370 s = splnet(); 371 372 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == IFF_UP) 373 iwi_init(ifp); 374 375 splx(s); 376 rw_exit_write(&sc->sc_rwlock); 377 } 378 379 int 380 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 381 { 382 int nsegs, error; 383 384 ring->queued = 0; 385 ring->cur = ring->next = 0; 386 387 error = bus_dmamap_create(sc->sc_dmat, 388 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT, 1, 389 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT, 0, 390 BUS_DMA_NOWAIT, &ring->map); 391 if (error != 0) { 392 printf("%s: could not create cmd ring DMA map\n", 393 sc->sc_dev.dv_xname); 394 goto fail; 395 } 396 397 error = bus_dmamem_alloc(sc->sc_dmat, 398 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT, PAGE_SIZE, 0, 399 &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT | BUS_DMA_ZERO); 400 if (error != 0) { 401 printf("%s: could not allocate cmd ring DMA memory\n", 402 sc->sc_dev.dv_xname); 403 goto fail; 404 } 405 406 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 407 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT, 408 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 409 if (error != 0) { 410 printf("%s: can't map cmd ring DMA memory\n", 411 sc->sc_dev.dv_xname); 412 goto fail; 413 } 414 415 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 416 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT, NULL, 417 BUS_DMA_NOWAIT); 418 if (error != 0) { 419 printf("%s: could not load cmd ring DMA map\n", 420 sc->sc_dev.dv_xname); 421 goto fail; 422 } 423 424 return 0; 425 426 fail: iwi_free_cmd_ring(sc, ring); 427 return error; 428 } 429 430 void 431 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 432 { 433 ring->queued = 0; 434 ring->cur = ring->next = 0; 435 } 436 437 void 438 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 439 { 440 if (ring->map != NULL) { 441 if (ring->desc != NULL) { 442 bus_dmamap_unload(sc->sc_dmat, ring->map); 443 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 444 sizeof (struct iwi_cmd_desc) * IWI_CMD_RING_COUNT); 445 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 446 } 447 bus_dmamap_destroy(sc->sc_dmat, ring->map); 448 } 449 } 450 451 int 452 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int ac) 453 { 454 struct iwi_tx_data *data; 455 int i, nsegs, error; 456 457 ring->queued = 0; 458 ring->cur = ring->next = 0; 459 ring->csr_ridx = IWI_CSR_TX_RIDX(ac); 460 ring->csr_widx = IWI_CSR_TX_WIDX(ac); 461 462 error = bus_dmamap_create(sc->sc_dmat, 463 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT, 1, 464 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT, 0, BUS_DMA_NOWAIT, 465 &ring->map); 466 if (error != 0) { 467 printf("%s: could not create tx ring DMA map\n", 468 sc->sc_dev.dv_xname); 469 goto fail; 470 } 471 472 error = bus_dmamem_alloc(sc->sc_dmat, 473 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT, PAGE_SIZE, 0, 474 &ring->seg, 1, &nsegs, BUS_DMA_NOWAIT | BUS_DMA_ZERO); 475 if (error != 0) { 476 printf("%s: could not allocate tx ring DMA memory\n", 477 sc->sc_dev.dv_xname); 478 goto fail; 479 } 480 481 error = bus_dmamem_map(sc->sc_dmat, &ring->seg, nsegs, 482 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT, 483 (caddr_t *)&ring->desc, BUS_DMA_NOWAIT); 484 if (error != 0) { 485 printf("%s: can't map tx ring DMA memory\n", 486 sc->sc_dev.dv_xname); 487 goto fail; 488 } 489 490 error = bus_dmamap_load(sc->sc_dmat, ring->map, ring->desc, 491 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT, NULL, 492 BUS_DMA_NOWAIT); 493 if (error != 0) { 494 printf("%s: could not load tx ring DMA map\n", 495 sc->sc_dev.dv_xname); 496 goto fail; 497 } 498 499 for (i = 0; i < IWI_TX_RING_COUNT; i++) { 500 data = &ring->data[i]; 501 502 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 503 IWI_MAX_SCATTER, MCLBYTES, 0, BUS_DMA_NOWAIT, &data->map); 504 if (error != 0) { 505 printf("%s: could not create tx buf DMA map\n", 506 sc->sc_dev.dv_xname); 507 goto fail; 508 } 509 } 510 511 return 0; 512 513 fail: iwi_free_tx_ring(sc, ring); 514 return error; 515 } 516 517 void 518 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 519 { 520 struct iwi_tx_data *data; 521 int i; 522 523 for (i = 0; i < IWI_TX_RING_COUNT; i++) { 524 data = &ring->data[i]; 525 526 if (data->m != NULL) { 527 bus_dmamap_unload(sc->sc_dmat, data->map); 528 m_freem(data->m); 529 data->m = NULL; 530 } 531 } 532 533 ring->queued = 0; 534 ring->cur = ring->next = 0; 535 } 536 537 void 538 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 539 { 540 struct iwi_tx_data *data; 541 int i; 542 543 if (ring->map != NULL) { 544 if (ring->desc != NULL) { 545 bus_dmamap_unload(sc->sc_dmat, ring->map); 546 bus_dmamem_unmap(sc->sc_dmat, (caddr_t)ring->desc, 547 sizeof (struct iwi_tx_desc) * IWI_TX_RING_COUNT); 548 bus_dmamem_free(sc->sc_dmat, &ring->seg, 1); 549 } 550 bus_dmamap_destroy(sc->sc_dmat, ring->map); 551 } 552 553 for (i = 0; i < IWI_TX_RING_COUNT; i++) { 554 data = &ring->data[i]; 555 556 if (data->m != NULL) { 557 bus_dmamap_unload(sc->sc_dmat, data->map); 558 m_freem(data->m); 559 } 560 bus_dmamap_destroy(sc->sc_dmat, data->map); 561 } 562 } 563 564 int 565 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 566 { 567 struct iwi_rx_data *data; 568 int i, error; 569 570 ring->cur = 0; 571 572 for (i = 0; i < IWI_RX_RING_COUNT; i++) { 573 data = &sc->rxq.data[i]; 574 575 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 576 0, BUS_DMA_NOWAIT, &data->map); 577 if (error != 0) { 578 printf("%s: could not create rx buf DMA map\n", 579 sc->sc_dev.dv_xname); 580 goto fail; 581 } 582 583 MGETHDR(data->m, M_DONTWAIT, MT_DATA); 584 if (data->m == NULL) { 585 printf("%s: could not allocate rx mbuf\n", 586 sc->sc_dev.dv_xname); 587 error = ENOMEM; 588 goto fail; 589 } 590 MCLGET(data->m, M_DONTWAIT); 591 if (!(data->m->m_flags & M_EXT)) { 592 m_freem(data->m); 593 data->m = NULL; 594 printf("%s: could not allocate rx mbuf cluster\n", 595 sc->sc_dev.dv_xname); 596 error = ENOMEM; 597 goto fail; 598 } 599 600 error = bus_dmamap_load(sc->sc_dmat, data->map, 601 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 602 if (error != 0) { 603 printf("%s: could not load rx buf DMA map\n", 604 sc->sc_dev.dv_xname); 605 goto fail; 606 } 607 608 data->reg = IWI_CSR_RX_BASE + i * 4; 609 } 610 611 return 0; 612 613 fail: iwi_free_rx_ring(sc, ring); 614 return error; 615 } 616 617 void 618 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 619 { 620 ring->cur = 0; 621 } 622 623 void 624 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 625 { 626 struct iwi_rx_data *data; 627 int i; 628 629 for (i = 0; i < IWI_RX_RING_COUNT; i++) { 630 data = &sc->rxq.data[i]; 631 632 if (data->m != NULL) { 633 bus_dmamap_unload(sc->sc_dmat, data->map); 634 m_freem(data->m); 635 } 636 bus_dmamap_destroy(sc->sc_dmat, data->map); 637 } 638 } 639 640 int 641 iwi_media_change(struct ifnet *ifp) 642 { 643 int error; 644 645 error = ieee80211_media_change(ifp); 646 if (error != ENETRESET) 647 return error; 648 649 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 650 error = iwi_init(ifp); 651 652 return error; 653 } 654 655 void 656 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 657 { 658 struct iwi_softc *sc = ifp->if_softc; 659 struct ieee80211com *ic = &sc->sc_ic; 660 uint32_t val; 661 int rate; 662 663 imr->ifm_status = IFM_AVALID; 664 imr->ifm_active = IFM_IEEE80211; 665 if (ic->ic_state == IEEE80211_S_RUN) 666 imr->ifm_status |= IFM_ACTIVE; 667 668 /* read current transmission rate from adapter */ 669 val = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 670 /* convert PLCP signal to 802.11 rate */ 671 rate = iwi_rate(val); 672 673 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 674 switch (ic->ic_opmode) { 675 case IEEE80211_M_STA: 676 break; 677 #ifndef IEEE80211_STA_ONLY 678 case IEEE80211_M_IBSS: 679 imr->ifm_active |= IFM_IEEE80211_ADHOC; 680 break; 681 #endif 682 case IEEE80211_M_MONITOR: 683 imr->ifm_active |= IFM_IEEE80211_MONITOR; 684 break; 685 default: 686 /* should not get there */ 687 break; 688 } 689 } 690 691 #ifndef IEEE80211_STA_ONLY 692 /* 693 * This is only used for IBSS mode where the firmware expect an index to an 694 * internal node table instead of a destination address. 695 */ 696 int 697 iwi_find_txnode(struct iwi_softc *sc, const uint8_t *macaddr) 698 { 699 struct iwi_node node; 700 int i; 701 702 for (i = 0; i < sc->nsta; i++) 703 if (IEEE80211_ADDR_EQ(sc->sta[i], macaddr)) 704 return i; /* already existing node */ 705 706 if (i == IWI_MAX_NODE) 707 return -1; /* no place left in neighbor table */ 708 709 /* save this new node in our softc table */ 710 IEEE80211_ADDR_COPY(sc->sta[i], macaddr); 711 sc->nsta = i; 712 713 /* write node information into NIC memory */ 714 bzero(&node, sizeof node); 715 IEEE80211_ADDR_COPY(node.bssid, macaddr); 716 717 CSR_WRITE_REGION_1(sc, IWI_CSR_NODE_BASE + i * sizeof node, 718 (uint8_t *)&node, sizeof node); 719 720 return i; 721 } 722 #endif 723 724 int 725 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 726 { 727 struct iwi_softc *sc = ic->ic_softc; 728 struct ifnet *ifp = &ic->ic_if; 729 enum ieee80211_state ostate; 730 uint32_t tmp; 731 732 if (LINK_STATE_IS_UP(ifp->if_link_state)) 733 ieee80211_set_link_state(ic, LINK_STATE_DOWN); 734 735 ostate = ic->ic_state; 736 737 switch (nstate) { 738 case IEEE80211_S_SCAN: 739 iwi_scan(sc); 740 break; 741 742 case IEEE80211_S_AUTH: 743 if (iwi_auth_and_assoc(sc)) { 744 ieee80211_begin_scan(&ic->ic_if); 745 return 0; 746 } 747 break; 748 749 case IEEE80211_S_RUN: 750 #ifndef IEEE80211_STA_ONLY 751 if (ic->ic_opmode == IEEE80211_M_IBSS) { 752 sc->nsta = 0; /* flush IBSS nodes */ 753 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 754 } else 755 #endif 756 if (ic->ic_opmode == IEEE80211_M_MONITOR) 757 iwi_set_chan(sc, ic->ic_ibss_chan); 758 759 /* assoc led on */ 760 tmp = MEM_READ_4(sc, IWI_MEM_EVENT_CTL) & IWI_LED_MASK; 761 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, tmp | IWI_LED_ASSOC); 762 763 if (!(ic->ic_flags & IEEE80211_F_RSNON)) { 764 /* 765 * NB: When RSN is enabled, we defer setting 766 * the link up until the port is valid. 767 */ 768 ieee80211_set_link_state(ic, LINK_STATE_UP); 769 } 770 break; 771 772 case IEEE80211_S_INIT: 773 if (ostate != IEEE80211_S_RUN) 774 break; 775 776 /* assoc led off */ 777 tmp = MEM_READ_4(sc, IWI_MEM_EVENT_CTL) & IWI_LED_MASK; 778 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, tmp & ~IWI_LED_ASSOC); 779 break; 780 781 case IEEE80211_S_ASSOC: 782 break; 783 } 784 785 ic->ic_state = nstate; 786 return 0; 787 } 788 789 /* 790 * Read 16 bits at address 'addr' from the serial EEPROM. 791 * DON'T PLAY WITH THIS CODE UNLESS YOU KNOW *EXACTLY* WHAT YOU'RE DOING! 792 */ 793 uint16_t 794 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 795 { 796 uint32_t tmp; 797 uint16_t val; 798 int n; 799 800 /* clock C once before the first command */ 801 IWI_EEPROM_CTL(sc, 0); 802 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 803 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 804 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 805 806 /* write start bit (1) */ 807 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 808 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 809 810 /* write READ opcode (10) */ 811 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 812 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 813 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 814 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 815 816 /* write address A7-A0 */ 817 for (n = 7; n >= 0; n--) { 818 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 819 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 820 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 821 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 822 } 823 824 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 825 826 /* read data Q15-Q0 */ 827 val = 0; 828 for (n = 15; n >= 0; n--) { 829 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 830 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 831 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 832 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 833 } 834 835 IWI_EEPROM_CTL(sc, 0); 836 837 /* clear Chip Select and clock C */ 838 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 839 IWI_EEPROM_CTL(sc, 0); 840 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 841 842 return val; 843 } 844 845 uint8_t 846 iwi_rate(int plcp) 847 { 848 switch (plcp) { 849 /* CCK rates (values are device-dependent) */ 850 case 10: return 2; 851 case 20: return 4; 852 case 55: return 11; 853 case 110: return 22; 854 855 /* OFDM rates (cf IEEE Std 802.11a-1999, pp. 14 Table 80) */ 856 case 0xd: return 12; 857 case 0xf: return 18; 858 case 0x5: return 24; 859 case 0x7: return 36; 860 case 0x9: return 48; 861 case 0xb: return 72; 862 case 0x1: return 96; 863 case 0x3: return 108; 864 865 /* unknown rate: should not happen */ 866 default: return 0; 867 } 868 } 869 870 void 871 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, 872 struct iwi_frame *frame, struct mbuf_list *ml) 873 { 874 struct ieee80211com *ic = &sc->sc_ic; 875 struct ifnet *ifp = &ic->ic_if; 876 struct mbuf *mnew, *m; 877 struct ieee80211_frame *wh; 878 struct ieee80211_rxinfo rxi; 879 struct ieee80211_node *ni; 880 int error; 881 882 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 883 letoh16(frame->len), frame->chan, frame->rssi_dbm)); 884 885 if (letoh16(frame->len) < sizeof (struct ieee80211_frame_min) || 886 letoh16(frame->len) > MCLBYTES) { 887 DPRINTF(("%s: bad frame length\n", sc->sc_dev.dv_xname)); 888 ifp->if_ierrors++; 889 return; 890 } 891 892 /* 893 * Try to allocate a new mbuf for this ring element and load it before 894 * processing the current mbuf. If the ring element cannot be loaded, 895 * drop the received packet and reuse the old mbuf. In the unlikely 896 * case that the old mbuf can't be reloaded either, explicitly panic. 897 */ 898 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 899 if (mnew == NULL) { 900 ifp->if_ierrors++; 901 return; 902 } 903 MCLGET(mnew, M_DONTWAIT); 904 if (!(mnew->m_flags & M_EXT)) { 905 m_freem(mnew); 906 ifp->if_ierrors++; 907 return; 908 } 909 910 bus_dmamap_unload(sc->sc_dmat, data->map); 911 912 error = bus_dmamap_load(sc->sc_dmat, data->map, mtod(mnew, void *), 913 MCLBYTES, NULL, BUS_DMA_NOWAIT); 914 if (error != 0) { 915 m_freem(mnew); 916 917 /* try to reload the old mbuf */ 918 error = bus_dmamap_load(sc->sc_dmat, data->map, 919 mtod(data->m, void *), MCLBYTES, NULL, BUS_DMA_NOWAIT); 920 if (error != 0) { 921 /* very unlikely that it will fail... */ 922 panic("%s: could not load old rx mbuf", 923 sc->sc_dev.dv_xname); 924 } 925 CSR_WRITE_4(sc, data->reg, data->map->dm_segs[0].ds_addr); 926 ifp->if_ierrors++; 927 return; 928 } 929 930 m = data->m; 931 data->m = mnew; 932 CSR_WRITE_4(sc, data->reg, data->map->dm_segs[0].ds_addr); 933 934 /* finalize mbuf */ 935 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 936 sizeof (struct iwi_frame) + letoh16(frame->len); 937 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 938 939 #if NBPFILTER > 0 940 if (sc->sc_drvbpf != NULL) { 941 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 942 943 tap->wr_flags = 0; 944 tap->wr_rate = iwi_rate(frame->rate); 945 tap->wr_chan_freq = 946 htole16(ic->ic_channels[frame->chan].ic_freq); 947 tap->wr_chan_flags = 948 htole16(ic->ic_channels[frame->chan].ic_flags); 949 tap->wr_antsignal = frame->signal; 950 tap->wr_antenna = frame->antenna & 0x3; 951 if (frame->antenna & 0x40) 952 tap->wr_flags |= IEEE80211_RADIOTAP_F_SHORTPRE; 953 954 bpf_mtap_hdr(sc->sc_drvbpf, tap, sc->sc_rxtap_len, 955 m, BPF_DIRECTION_IN); 956 } 957 #endif 958 959 wh = mtod(m, struct ieee80211_frame *); 960 ni = ieee80211_find_rxnode(ic, wh); 961 962 /* send the frame to the upper layer */ 963 memset(&rxi, 0, sizeof(rxi)); 964 rxi.rxi_rssi = frame->rssi_dbm; 965 ieee80211_inputm(ifp, m, ni, &rxi, ml); 966 967 /* node is no longer needed */ 968 ieee80211_release_node(ic, ni); 969 } 970 971 void 972 iwi_notification_intr(struct iwi_softc *sc, struct iwi_rx_data *data, 973 struct iwi_notif *notif) 974 { 975 struct ieee80211com *ic = &sc->sc_ic; 976 struct ieee80211_node *ni = ic->ic_bss; 977 struct ifnet *ifp = &ic->ic_if; 978 979 switch (notif->type) { 980 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 981 { 982 #ifdef IWI_DEBUG 983 struct iwi_notif_scan_channel *chan = 984 (struct iwi_notif_scan_channel *)(notif + 1); 985 #endif 986 DPRINTFN(2, ("Scanning channel (%u)\n", chan->nchan)); 987 break; 988 } 989 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 990 { 991 #ifdef IWI_DEBUG 992 struct iwi_notif_scan_complete *scan = 993 (struct iwi_notif_scan_complete *)(notif + 1); 994 #endif 995 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 996 scan->status)); 997 998 /* monitor mode uses scan to set the channel ... */ 999 if (ic->ic_opmode != IEEE80211_M_MONITOR) 1000 ieee80211_end_scan(ifp); 1001 else 1002 iwi_set_chan(sc, ic->ic_ibss_chan); 1003 break; 1004 } 1005 case IWI_NOTIF_TYPE_AUTHENTICATION: 1006 { 1007 struct iwi_notif_authentication *auth = 1008 (struct iwi_notif_authentication *)(notif + 1); 1009 1010 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1011 1012 switch (auth->state) { 1013 case IWI_AUTHENTICATED: 1014 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1015 break; 1016 1017 case IWI_DEAUTHENTICATED: 1018 break; 1019 1020 default: 1021 printf("%s: unknown authentication state %u\n", 1022 sc->sc_dev.dv_xname, auth->state); 1023 } 1024 break; 1025 } 1026 case IWI_NOTIF_TYPE_ASSOCIATION: 1027 { 1028 struct iwi_notif_association *assoc = 1029 (struct iwi_notif_association *)(notif + 1); 1030 1031 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1032 assoc->status)); 1033 1034 switch (assoc->state) { 1035 case IWI_AUTHENTICATED: 1036 /* re-association, do nothing */ 1037 break; 1038 1039 case IWI_ASSOCIATED: 1040 if (ic->ic_flags & IEEE80211_F_RSNON) 1041 ni->ni_rsn_supp_state = RSNA_SUPP_PTKSTART; 1042 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1043 break; 1044 1045 case IWI_DEASSOCIATED: 1046 ieee80211_begin_scan(ifp); 1047 break; 1048 1049 default: 1050 printf("%s: unknown association state %u\n", 1051 sc->sc_dev.dv_xname, assoc->state); 1052 } 1053 break; 1054 } 1055 case IWI_NOTIF_TYPE_BEACON: 1056 { 1057 struct iwi_notif_beacon *beacon = 1058 (struct iwi_notif_beacon *)(notif + 1); 1059 1060 if (letoh32(beacon->status) == IWI_BEACON_MISSED) { 1061 /* XXX should roam when too many beacons missed */ 1062 DPRINTFN(2, ("%s: %u beacon(s) missed\n", 1063 sc->sc_dev.dv_xname, letoh32(beacon->count))); 1064 } 1065 break; 1066 } 1067 case IWI_NOTIF_TYPE_BAD_LINK: 1068 DPRINTFN(2, ("link deterioration detected\n")); 1069 break; 1070 1071 case IWI_NOTIF_TYPE_NOISE: 1072 DPRINTFN(5, ("Measured noise %u\n", 1073 letoh32(*(uint32_t *)(notif + 1)) & 0xff)); 1074 break; 1075 1076 default: 1077 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1078 } 1079 } 1080 1081 void 1082 iwi_rx_intr(struct iwi_softc *sc) 1083 { 1084 struct mbuf_list ml = MBUF_LIST_INITIALIZER(); 1085 struct iwi_rx_data *data; 1086 struct iwi_hdr *hdr; 1087 uint32_t hw; 1088 1089 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1090 1091 for (; sc->rxq.cur != hw;) { 1092 data = &sc->rxq.data[sc->rxq.cur]; 1093 1094 bus_dmamap_sync(sc->sc_dmat, data->map, 0, MCLBYTES, 1095 BUS_DMASYNC_POSTREAD); 1096 1097 hdr = mtod(data->m, struct iwi_hdr *); 1098 1099 switch (hdr->type) { 1100 case IWI_HDR_TYPE_FRAME: 1101 iwi_frame_intr(sc, data, 1102 (struct iwi_frame *)(hdr + 1), &ml); 1103 break; 1104 1105 case IWI_HDR_TYPE_NOTIF: 1106 iwi_notification_intr(sc, data, 1107 (struct iwi_notif *)(hdr + 1)); 1108 break; 1109 1110 default: 1111 printf("%s: unknown hdr type %u\n", 1112 sc->sc_dev.dv_xname, hdr->type); 1113 } 1114 1115 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1116 } 1117 if_input(&sc->sc_ic.ic_if, &ml); 1118 1119 /* tell the firmware what we have processed */ 1120 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1121 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1122 } 1123 1124 void 1125 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1126 { 1127 struct ieee80211com *ic = &sc->sc_ic; 1128 struct ifnet *ifp = &ic->ic_if; 1129 struct iwi_tx_data *data; 1130 uint32_t hw; 1131 1132 hw = CSR_READ_4(sc, txq->csr_ridx); 1133 1134 for (; txq->next != hw;) { 1135 data = &txq->data[txq->next]; 1136 1137 bus_dmamap_unload(sc->sc_dmat, data->map); 1138 m_freem(data->m); 1139 data->m = NULL; 1140 ieee80211_release_node(ic, data->ni); 1141 data->ni = NULL; 1142 1143 txq->queued--; 1144 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1145 } 1146 1147 sc->sc_tx_timer = 0; 1148 ifq_clr_oactive(&ifp->if_snd); 1149 (*ifp->if_start)(ifp); 1150 } 1151 1152 int 1153 iwi_intr(void *arg) 1154 { 1155 struct iwi_softc *sc = arg; 1156 struct ifnet *ifp = &sc->sc_ic.ic_if; 1157 uint32_t r; 1158 1159 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1160 return 0; 1161 1162 /* disable interrupts */ 1163 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1164 1165 /* acknowledge interrupts */ 1166 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1167 1168 if (r & IWI_INTR_FATAL_ERROR) { 1169 printf("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1170 iwi_stop(ifp, 1); 1171 task_add(systq, &sc->init_task); 1172 return 1; 1173 } 1174 1175 if (r & IWI_INTR_FW_INITED) 1176 wakeup(sc); 1177 1178 if (r & IWI_INTR_RADIO_OFF) { 1179 DPRINTF(("radio transmitter off\n")); 1180 iwi_stop(ifp, 1); 1181 return 1; 1182 } 1183 1184 if (r & IWI_INTR_CMD_DONE) { 1185 /* kick next pending command if any */ 1186 sc->cmdq.next = (sc->cmdq.next + 1) % IWI_CMD_RING_COUNT; 1187 if (--sc->cmdq.queued > 0) 1188 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.next); 1189 1190 wakeup(sc); 1191 } 1192 1193 if (r & IWI_INTR_TX1_DONE) 1194 iwi_tx_intr(sc, &sc->txq[0]); 1195 1196 if (r & IWI_INTR_TX2_DONE) 1197 iwi_tx_intr(sc, &sc->txq[1]); 1198 1199 if (r & IWI_INTR_TX3_DONE) 1200 iwi_tx_intr(sc, &sc->txq[2]); 1201 1202 if (r & IWI_INTR_TX4_DONE) 1203 iwi_tx_intr(sc, &sc->txq[3]); 1204 1205 if (r & IWI_INTR_RX_DONE) 1206 iwi_rx_intr(sc); 1207 1208 /* re-enable interrupts */ 1209 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1210 1211 return 1; 1212 } 1213 1214 int 1215 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, int async) 1216 { 1217 struct iwi_cmd_desc *desc; 1218 1219 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1220 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1221 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1222 desc->type = type; 1223 desc->len = len; 1224 bcopy(data, desc->data, len); 1225 1226 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.map, 1227 sc->cmdq.cur * sizeof (struct iwi_cmd_desc), 1228 sizeof (struct iwi_cmd_desc), BUS_DMASYNC_PREWRITE); 1229 1230 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1231 type, len)); 1232 1233 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1234 1235 /* don't kick cmd immediately if another async command is pending */ 1236 if (++sc->cmdq.queued == 1) { 1237 sc->cmdq.next = sc->cmdq.cur; 1238 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.next); 1239 } 1240 1241 return async ? 0 : tsleep_nsec(sc, PCATCH, "iwicmd", SEC_TO_NSEC(1)); 1242 } 1243 1244 /* ARGSUSED */ 1245 int 1246 iwi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, int type, 1247 int arg1, int arg2) 1248 { 1249 return EOPNOTSUPP; 1250 } 1251 1252 int 1253 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1254 { 1255 struct iwi_softc *sc = ifp->if_softc; 1256 struct ieee80211com *ic = &sc->sc_ic; 1257 struct ieee80211_frame *wh; 1258 struct ieee80211_key *k; 1259 struct iwi_tx_data *data; 1260 struct iwi_tx_desc *desc; 1261 struct iwi_tx_ring *txq = &sc->txq[0]; 1262 int hdrlen, error, i, station = 0; 1263 1264 wh = mtod(m0, struct ieee80211_frame *); 1265 1266 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1267 k = ieee80211_get_txkey(ic, wh, ni); 1268 1269 if ((m0 = ieee80211_encrypt(ic, m0, k)) == NULL) 1270 return ENOBUFS; 1271 1272 /* packet header may have moved, reset our local pointer */ 1273 wh = mtod(m0, struct ieee80211_frame *); 1274 } 1275 1276 #if NBPFILTER > 0 1277 if (sc->sc_drvbpf != NULL) { 1278 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1279 1280 tap->wt_flags = 0; 1281 tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq); 1282 tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags); 1283 1284 bpf_mtap_hdr(sc->sc_drvbpf, tap, sc->sc_txtap_len, 1285 m0, BPF_DIRECTION_OUT); 1286 } 1287 #endif 1288 1289 data = &txq->data[txq->cur]; 1290 desc = &txq->desc[txq->cur]; 1291 1292 /* copy and trim IEEE802.11 header */ 1293 hdrlen = ieee80211_get_hdrlen(wh); 1294 bcopy(wh, &desc->wh, hdrlen); 1295 m_adj(m0, hdrlen); 1296 1297 #ifndef IEEE80211_STA_ONLY 1298 if (ic->ic_opmode == IEEE80211_M_IBSS) { 1299 station = iwi_find_txnode(sc, desc->wh.i_addr1); 1300 if (station == -1) { 1301 m_freem(m0); 1302 ieee80211_release_node(ic, ni); 1303 ifp->if_oerrors++; 1304 return 0; 1305 } 1306 } 1307 #endif 1308 1309 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1310 BUS_DMA_NOWAIT); 1311 if (error != 0 && error != EFBIG) { 1312 printf("%s: can't map mbuf (error %d)\n", 1313 sc->sc_dev.dv_xname, error); 1314 m_freem(m0); 1315 return error; 1316 } 1317 if (error != 0) { 1318 /* too many fragments, linearize */ 1319 if (m_defrag(m0, M_DONTWAIT)) { 1320 m_freem(m0); 1321 return ENOBUFS; 1322 } 1323 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1324 BUS_DMA_NOWAIT); 1325 if (error != 0) { 1326 printf("%s: can't map mbuf (error %d)\n", 1327 sc->sc_dev.dv_xname, error); 1328 m_freem(m0); 1329 return error; 1330 } 1331 } 1332 1333 data->m = m0; 1334 data->ni = ni; 1335 1336 desc->hdr.type = IWI_HDR_TYPE_DATA; 1337 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1338 desc->cmd = IWI_DATA_CMD_TX; 1339 desc->len = htole16(m0->m_pkthdr.len); 1340 desc->station = station; 1341 desc->flags = IWI_DATA_FLAG_NO_WEP; 1342 desc->xflags = 0; 1343 1344 if (!IEEE80211_IS_MULTICAST(desc->wh.i_addr1)) 1345 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1346 1347 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1348 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1349 1350 if ((desc->wh.i_fc[0] & 1351 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == 1352 (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) 1353 desc->xflags |= IWI_DATA_XFLAG_QOS; 1354 1355 if (ic->ic_curmode == IEEE80211_MODE_11B) 1356 desc->xflags |= IWI_DATA_XFLAG_CCK; 1357 1358 desc->nseg = htole32(data->map->dm_nsegs); 1359 for (i = 0; i < data->map->dm_nsegs; i++) { 1360 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1361 desc->seg_len[i] = htole16(data->map->dm_segs[i].ds_len); 1362 } 1363 1364 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1365 BUS_DMASYNC_PREWRITE); 1366 bus_dmamap_sync(sc->sc_dmat, txq->map, 1367 txq->cur * sizeof (struct iwi_tx_desc), 1368 sizeof (struct iwi_tx_desc), BUS_DMASYNC_PREWRITE); 1369 1370 DPRINTFN(5, ("sending data frame idx=%u len=%u nseg=%u\n", txq->cur, 1371 letoh16(desc->len), data->map->dm_nsegs)); 1372 1373 txq->queued++; 1374 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1375 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1376 1377 return 0; 1378 } 1379 1380 void 1381 iwi_start(struct ifnet *ifp) 1382 { 1383 struct iwi_softc *sc = ifp->if_softc; 1384 struct ieee80211com *ic = &sc->sc_ic; 1385 struct mbuf *m0; 1386 struct ieee80211_node *ni; 1387 1388 if (ic->ic_state != IEEE80211_S_RUN) 1389 return; 1390 1391 for (;;) { 1392 if (sc->txq[0].queued + IWI_MAX_NSEG + 2 >= IWI_TX_RING_COUNT) { 1393 ifq_set_oactive(&ifp->if_snd); 1394 break; 1395 } 1396 1397 m0 = ifq_dequeue(&ifp->if_snd); 1398 if (m0 == NULL) 1399 break; 1400 1401 #if NBPFILTER > 0 1402 if (ifp->if_bpf != NULL) 1403 bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT); 1404 #endif 1405 1406 m0 = ieee80211_encap(ifp, m0, &ni); 1407 if (m0 == NULL) 1408 continue; 1409 1410 #if NBPFILTER > 0 1411 if (ic->ic_rawbpf != NULL) 1412 bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT); 1413 #endif 1414 1415 if (iwi_tx_start(ifp, m0, ni) != 0) { 1416 if (ni != NULL) 1417 ieee80211_release_node(ic, ni); 1418 ifp->if_oerrors++; 1419 break; 1420 } 1421 1422 /* start watchdog timer */ 1423 sc->sc_tx_timer = 5; 1424 ifp->if_timer = 1; 1425 } 1426 } 1427 1428 void 1429 iwi_watchdog(struct ifnet *ifp) 1430 { 1431 struct iwi_softc *sc = ifp->if_softc; 1432 1433 ifp->if_timer = 0; 1434 1435 if (sc->sc_tx_timer > 0) { 1436 if (--sc->sc_tx_timer == 0) { 1437 printf("%s: device timeout\n", sc->sc_dev.dv_xname); 1438 iwi_stop(ifp, 1); 1439 ifp->if_oerrors++; 1440 return; 1441 } 1442 ifp->if_timer = 1; 1443 } 1444 1445 ieee80211_watchdog(ifp); 1446 } 1447 1448 int 1449 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1450 { 1451 struct iwi_softc *sc = ifp->if_softc; 1452 int s, error = 0; 1453 1454 error = rw_enter(&sc->sc_rwlock, RW_WRITE | RW_INTR); 1455 if (error) 1456 return error; 1457 s = splnet(); 1458 1459 switch (cmd) { 1460 case SIOCSIFADDR: 1461 ifp->if_flags |= IFF_UP; 1462 /* FALLTHROUGH */ 1463 case SIOCSIFFLAGS: 1464 if (ifp->if_flags & IFF_UP) { 1465 if (!(ifp->if_flags & IFF_RUNNING)) 1466 iwi_init(ifp); 1467 } else { 1468 if (ifp->if_flags & IFF_RUNNING) 1469 iwi_stop(ifp, 1); 1470 } 1471 break; 1472 1473 case SIOCG80211TXPOWER: 1474 /* 1475 * If the hardware radio transmitter switch is off, report a 1476 * tx power of IEEE80211_TXPOWER_MIN to indicate that radio 1477 * transmitter is killed. 1478 */ 1479 ((struct ieee80211_txpower *)data)->i_val = 1480 (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1481 sc->sc_ic.ic_txpower : IEEE80211_TXPOWER_MIN; 1482 break; 1483 1484 default: 1485 error = ieee80211_ioctl(ifp, cmd, data); 1486 } 1487 1488 if (error == ENETRESET) { 1489 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1490 (IFF_UP | IFF_RUNNING)) 1491 iwi_init(ifp); 1492 error = 0; 1493 } 1494 1495 splx(s); 1496 rw_exit_write(&sc->sc_rwlock); 1497 return error; 1498 } 1499 1500 void 1501 iwi_stop_master(struct iwi_softc *sc) 1502 { 1503 uint32_t tmp; 1504 int ntries; 1505 1506 /* disable interrupts */ 1507 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1508 1509 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1510 for (ntries = 0; ntries < 5; ntries++) { 1511 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1512 break; 1513 DELAY(10); 1514 } 1515 if (ntries == 5) { 1516 printf("%s: timeout waiting for master\n", 1517 sc->sc_dev.dv_xname); 1518 } 1519 1520 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1521 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 1522 } 1523 1524 int 1525 iwi_reset(struct iwi_softc *sc) 1526 { 1527 uint32_t tmp; 1528 int i, ntries; 1529 1530 iwi_stop_master(sc); 1531 1532 /* move adapter to D0 state */ 1533 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1534 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 1535 1536 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1537 1538 /* wait for clock stabilization */ 1539 for (ntries = 0; ntries < 1000; ntries++) { 1540 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1541 break; 1542 DELAY(200); 1543 } 1544 if (ntries == 1000) { 1545 printf("%s: timeout waiting for clock stabilization\n", 1546 sc->sc_dev.dv_xname); 1547 return ETIMEDOUT; 1548 } 1549 1550 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1551 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SW_RESET); 1552 1553 DELAY(10); 1554 1555 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1556 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 1557 1558 /* clear NIC memory */ 1559 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1560 for (i = 0; i < 0xc000; i++) 1561 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1562 1563 return 0; 1564 } 1565 1566 int 1567 iwi_load_ucode(struct iwi_softc *sc, const char *data, int size) 1568 { 1569 const uint16_t *w; 1570 uint32_t tmp; 1571 int ntries, i; 1572 1573 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1574 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_STOP_MASTER); 1575 for (ntries = 0; ntries < 5; ntries++) { 1576 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1577 break; 1578 DELAY(10); 1579 } 1580 if (ntries == 5) { 1581 printf("%s: timeout waiting for master\n", 1582 sc->sc_dev.dv_xname); 1583 return ETIMEDOUT; 1584 } 1585 1586 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1587 DELAY(5000); 1588 1589 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1590 CSR_WRITE_4(sc, IWI_CSR_RST, tmp & ~IWI_RST_PRINCETON_RESET); 1591 1592 DELAY(5000); 1593 MEM_WRITE_4(sc, 0x3000e0, 0); 1594 DELAY(1000); 1595 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, 1); 1596 DELAY(1000); 1597 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, 0); 1598 DELAY(1000); 1599 MEM_WRITE_1(sc, 0x200000, 0x00); 1600 MEM_WRITE_1(sc, 0x200000, 0x40); 1601 DELAY(1000); 1602 1603 /* adapter is buggy, we must set the address for each word */ 1604 for (w = (const uint16_t *)data; size > 0; w++, size -= 2) 1605 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 1606 1607 MEM_WRITE_1(sc, 0x200000, 0x00); 1608 MEM_WRITE_1(sc, 0x200000, 0x80); 1609 1610 /* wait until we get an answer */ 1611 for (ntries = 0; ntries < 100; ntries++) { 1612 if (MEM_READ_1(sc, 0x200000) & 1) 1613 break; 1614 DELAY(100); 1615 } 1616 if (ntries == 100) { 1617 printf("%s: timeout waiting for ucode to initialize\n", 1618 sc->sc_dev.dv_xname); 1619 return ETIMEDOUT; 1620 } 1621 1622 /* read the answer or the firmware will not initialize properly */ 1623 for (i = 0; i < 7; i++) 1624 MEM_READ_4(sc, 0x200004); 1625 1626 MEM_WRITE_1(sc, 0x200000, 0x00); 1627 1628 return 0; 1629 } 1630 1631 /* macro to handle unaligned little endian data in firmware image */ 1632 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1633 1634 int 1635 iwi_load_firmware(struct iwi_softc *sc, const char *data, int size) 1636 { 1637 bus_dmamap_t map; 1638 bus_dma_segment_t seg; 1639 caddr_t virtaddr; 1640 u_char *p, *end; 1641 uint32_t sentinel, tmp, ctl, src, dst, sum, len, mlen; 1642 int ntries, nsegs, error; 1643 1644 /* allocate DMA memory to store firmware image */ 1645 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 1646 BUS_DMA_NOWAIT, &map); 1647 if (error != 0) { 1648 printf("%s: could not create firmware DMA map\n", 1649 sc->sc_dev.dv_xname); 1650 goto fail1; 1651 } 1652 1653 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1654 &nsegs, BUS_DMA_NOWAIT); 1655 if (error != 0) { 1656 printf("%s: could not allocate firmware DMA memory\n", 1657 sc->sc_dev.dv_xname); 1658 goto fail2; 1659 } 1660 1661 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1662 BUS_DMA_NOWAIT); 1663 if (error != 0) { 1664 printf("%s: can't map firmware DMA memory\n", 1665 sc->sc_dev.dv_xname); 1666 goto fail3; 1667 } 1668 1669 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1670 BUS_DMA_NOWAIT); 1671 if (error != 0) { 1672 printf("%s: could not load firmware DMA map\n", 1673 sc->sc_dev.dv_xname); 1674 goto fail4; 1675 } 1676 1677 /* copy firmware image to DMA memory */ 1678 bcopy(data, virtaddr, size); 1679 1680 /* make sure the adapter will get up-to-date values */ 1681 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1682 1683 /* tell the adapter where the command blocks are stored */ 1684 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1685 1686 /* 1687 * Store command blocks into adapter's internal memory using register 1688 * indirections. The adapter will read the firmware image through DMA 1689 * using information stored in command blocks. 1690 */ 1691 src = map->dm_segs[0].ds_addr; 1692 p = virtaddr; 1693 end = p + size; 1694 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1695 1696 while (p < end) { 1697 dst = GETLE32(p); p += 4; src += 4; 1698 len = GETLE32(p); p += 4; src += 4; 1699 p += len; 1700 1701 while (len > 0) { 1702 mlen = min(len, IWI_CB_MAXDATALEN); 1703 1704 ctl = IWI_CB_DEFAULT_CTL | mlen; 1705 sum = ctl ^ src ^ dst; 1706 1707 /* write a command block */ 1708 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1709 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 1710 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 1711 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1712 1713 src += mlen; 1714 dst += mlen; 1715 len -= mlen; 1716 } 1717 } 1718 1719 /* write a fictive final command block (sentinel) */ 1720 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1721 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1722 1723 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1724 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 1725 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 1726 1727 /* tell the adapter to start processing command blocks */ 1728 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1729 1730 /* wait until the adapter has processed all command blocks */ 1731 for (ntries = 0; ntries < 400; ntries++) { 1732 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1733 break; 1734 DELAY(100); 1735 } 1736 if (ntries == 400) { 1737 printf("%s: timeout processing cb\n", sc->sc_dev.dv_xname); 1738 error = ETIMEDOUT; 1739 goto fail5; 1740 } 1741 1742 /* we're done with command blocks processing */ 1743 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1744 1745 /* allow interrupts so we know when the firmware is inited */ 1746 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1747 1748 /* tell the adapter to initialize the firmware */ 1749 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1750 1751 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1752 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 1753 1754 /* wait at most one second for firmware initialization to complete */ 1755 if ((error = tsleep_nsec(sc, PCATCH, "iwiinit", SEC_TO_NSEC(1))) != 0) { 1756 printf("%s: timeout waiting for firmware initialization to " 1757 "complete\n", sc->sc_dev.dv_xname); 1758 goto fail5; 1759 } 1760 1761 fail5: bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1762 bus_dmamap_unload(sc->sc_dmat, map); 1763 fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1764 fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1765 fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1766 fail1: return error; 1767 } 1768 1769 int 1770 iwi_config(struct iwi_softc *sc) 1771 { 1772 struct ieee80211com *ic = &sc->sc_ic; 1773 struct ifnet *ifp = &ic->ic_if; 1774 struct iwi_configuration config; 1775 struct iwi_rateset rs; 1776 struct iwi_txpower power; 1777 uint32_t data; 1778 int error, nchan, i; 1779 1780 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1781 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1782 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1783 IEEE80211_ADDR_LEN, 0); 1784 if (error != 0) 1785 return error; 1786 1787 bzero(&config, sizeof config); 1788 config.multicast_enabled = 1; 1789 config.silence_threshold = 30; 1790 config.report_noise = 1; 1791 config.answer_pbreq = 1792 #ifndef IEEE80211_STA_ONLY 1793 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 1794 #endif 1795 0; 1796 DPRINTF(("Configuring adapter\n")); 1797 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config, 0); 1798 if (error != 0) 1799 return error; 1800 1801 data = htole32(IWI_POWER_MODE_CAM); 1802 DPRINTF(("Setting power mode to %u\n", letoh32(data))); 1803 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 1804 if (error != 0) 1805 return error; 1806 1807 data = htole32(ic->ic_rtsthreshold); 1808 DPRINTF(("Setting RTS threshold to %u\n", letoh32(data))); 1809 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 1810 if (error != 0) 1811 return error; 1812 1813 data = htole32(ic->ic_fragthreshold); 1814 DPRINTF(("Setting fragmentation threshold to %u\n", letoh32(data))); 1815 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 1816 if (error != 0) 1817 return error; 1818 1819 /* 1820 * Set default Tx power for 802.11b/g and 802.11a channels. 1821 */ 1822 nchan = 0; 1823 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1824 if (!IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i])) 1825 continue; 1826 power.chan[nchan].chan = i; 1827 power.chan[nchan].power = IWI_TXPOWER_MAX; 1828 nchan++; 1829 } 1830 power.nchan = nchan; 1831 1832 power.mode = IWI_MODE_11G; 1833 DPRINTF(("Setting .11g channels tx power\n")); 1834 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 1835 if (error != 0) 1836 return error; 1837 1838 power.mode = IWI_MODE_11B; 1839 DPRINTF(("Setting .11b channels tx power\n")); 1840 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 1841 if (error != 0) 1842 return error; 1843 1844 nchan = 0; 1845 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1846 if (!IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) 1847 continue; 1848 power.chan[nchan].chan = i; 1849 power.chan[nchan].power = IWI_TXPOWER_MAX; 1850 nchan++; 1851 } 1852 power.nchan = nchan; 1853 1854 if (nchan > 0) { /* 2915ABG only */ 1855 power.mode = IWI_MODE_11A; 1856 DPRINTF(("Setting .11a channels tx power\n")); 1857 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 1858 0); 1859 if (error != 0) 1860 return error; 1861 } 1862 1863 rs.mode = IWI_MODE_11G; 1864 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1865 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 1866 bcopy(ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, rs.rates, 1867 rs.nrates); 1868 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 1869 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1870 if (error != 0) 1871 return error; 1872 1873 rs.mode = IWI_MODE_11A; 1874 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1875 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 1876 bcopy(ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, rs.rates, 1877 rs.nrates); 1878 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 1879 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1880 if (error != 0) 1881 return error; 1882 1883 /* if we have a desired ESSID, set it now */ 1884 if (ic->ic_des_esslen != 0) { 1885 #ifdef IWI_DEBUG 1886 if (iwi_debug > 0) { 1887 printf("Setting desired ESSID to "); 1888 ieee80211_print_essid(ic->ic_des_essid, 1889 ic->ic_des_esslen); 1890 printf("\n"); 1891 } 1892 #endif 1893 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ic->ic_des_essid, 1894 ic->ic_des_esslen, 0); 1895 if (error != 0) 1896 return error; 1897 } 1898 1899 arc4random_buf(&data, sizeof data); 1900 DPRINTF(("Setting random seed to %u\n", data)); 1901 error = iwi_cmd(sc, IWI_CMD_SET_RANDOM_SEED, &data, sizeof data, 0); 1902 if (error != 0) 1903 return error; 1904 1905 /* enable adapter */ 1906 DPRINTF(("Enabling adapter\n")); 1907 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 1908 } 1909 1910 void 1911 iwi_update_edca(struct ieee80211com *ic) 1912 { 1913 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 1914 #define IWI_TXOP(v) IEEE80211_TXOP_TO_US(v) 1915 struct iwi_softc *sc = ic->ic_softc; 1916 struct iwi_qos_cmd cmd; 1917 struct iwi_qos_params *qos; 1918 struct ieee80211_edca_ac_params *edca = ic->ic_edca_ac; 1919 int aci; 1920 1921 /* set default QoS parameters for CCK */ 1922 qos = &cmd.cck; 1923 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1924 qos->cwmin[aci] = IWI_EXP2(iwi_cck[aci].ac_ecwmin); 1925 qos->cwmax[aci] = IWI_EXP2(iwi_cck[aci].ac_ecwmax); 1926 qos->txop [aci] = IWI_TXOP(iwi_cck[aci].ac_txoplimit); 1927 qos->aifsn[aci] = iwi_cck[aci].ac_aifsn; 1928 qos->acm [aci] = 0; 1929 } 1930 /* set default QoS parameters for OFDM */ 1931 qos = &cmd.ofdm; 1932 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1933 qos->cwmin[aci] = IWI_EXP2(iwi_ofdm[aci].ac_ecwmin); 1934 qos->cwmax[aci] = IWI_EXP2(iwi_ofdm[aci].ac_ecwmax); 1935 qos->txop [aci] = IWI_TXOP(iwi_ofdm[aci].ac_txoplimit); 1936 qos->aifsn[aci] = iwi_ofdm[aci].ac_aifsn; 1937 qos->acm [aci] = 0; 1938 } 1939 /* set current QoS parameters */ 1940 qos = &cmd.current; 1941 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1942 qos->cwmin[aci] = IWI_EXP2(edca[aci].ac_ecwmin); 1943 qos->cwmax[aci] = IWI_EXP2(edca[aci].ac_ecwmax); 1944 qos->txop [aci] = IWI_TXOP(edca[aci].ac_txoplimit); 1945 qos->aifsn[aci] = edca[aci].ac_aifsn; 1946 qos->acm [aci] = 0; 1947 } 1948 1949 DPRINTF(("Setting QoS parameters\n")); 1950 (void)iwi_cmd(sc, IWI_CMD_SET_QOS_PARAMS, &cmd, sizeof cmd, 1); 1951 #undef IWI_EXP2 1952 #undef IWI_TXOP 1953 } 1954 1955 int 1956 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 1957 { 1958 struct ieee80211com *ic = &sc->sc_ic; 1959 struct iwi_scan scan; 1960 1961 bzero(&scan, sizeof scan); 1962 memset(scan.type, IWI_SCAN_TYPE_PASSIVE, sizeof scan.type); 1963 scan.passive = htole16(2000); 1964 scan.channels[0] = 1 | 1965 (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ); 1966 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 1967 1968 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 1969 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 1970 } 1971 1972 int 1973 iwi_scan(struct iwi_softc *sc) 1974 { 1975 struct ieee80211com *ic = &sc->sc_ic; 1976 struct iwi_scan scan; 1977 uint8_t *p; 1978 int i, count; 1979 1980 bzero(&scan, sizeof scan); 1981 1982 if (ic->ic_des_esslen != 0) { 1983 scan.bdirected = htole16(40); 1984 memset(scan.type, IWI_SCAN_TYPE_BDIRECTED, sizeof scan.type); 1985 } else { 1986 scan.broadcast = htole16(40); 1987 memset(scan.type, IWI_SCAN_TYPE_BROADCAST, sizeof scan.type); 1988 } 1989 1990 p = scan.channels; 1991 count = 0; 1992 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1993 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) { 1994 *++p = i; 1995 count++; 1996 } 1997 } 1998 *(p - count) = IWI_CHAN_5GHZ | count; 1999 2000 p = (count > 0) ? p + 1 : scan.channels; 2001 count = 0; 2002 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2003 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i])) { 2004 *++p = i; 2005 count++; 2006 } 2007 } 2008 *(p - count) = IWI_CHAN_2GHZ | count; 2009 2010 DPRINTF(("Start scanning\n")); 2011 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2012 } 2013 2014 int 2015 iwi_auth_and_assoc(struct iwi_softc *sc) 2016 { 2017 struct ieee80211com *ic = &sc->sc_ic; 2018 struct ieee80211_node *ni = ic->ic_bss; 2019 struct iwi_configuration config; 2020 struct iwi_associate assoc; 2021 struct iwi_rateset rs; 2022 uint8_t *frm; 2023 uint32_t data; 2024 uint16_t capinfo; 2025 uint8_t buf[64]; /* XXX max WPA/RSN/WMM IE length */ 2026 int error; 2027 2028 /* update adapter configuration */ 2029 bzero(&config, sizeof config); 2030 config.multicast_enabled = 1; 2031 config.disable_unicast_decryption = 1; 2032 config.disable_multicast_decryption = 1; 2033 config.silence_threshold = 30; 2034 config.report_noise = 1; 2035 config.allow_mgt = 1; 2036 config.answer_pbreq = 2037 #ifndef IEEE80211_STA_ONLY 2038 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 2039 #endif 2040 0; 2041 if (ic->ic_curmode == IEEE80211_MODE_11G) 2042 config.bg_autodetection = 1; 2043 DPRINTF(("Configuring adapter\n")); 2044 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config, 1); 2045 if (error != 0) 2046 return error; 2047 2048 #ifdef IWI_DEBUG 2049 if (iwi_debug > 0) { 2050 printf("Setting ESSID to "); 2051 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2052 printf("\n"); 2053 } 2054 #endif 2055 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2056 if (error != 0) 2057 return error; 2058 2059 /* the rate set has already been "negotiated" */ 2060 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2061 IWI_MODE_11G; 2062 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2063 rs.nrates = ni->ni_rates.rs_nrates; 2064 if (rs.nrates > sizeof rs.rates) { 2065 #ifdef DIAGNOSTIC 2066 /* should not happen since the rates are negotiated */ 2067 printf("%s: XXX too many rates (count=%d, last=%d)\n", 2068 sc->sc_dev.dv_xname, ni->ni_rates.rs_nrates, 2069 ni->ni_rates.rs_rates[ni->ni_rates.rs_nrates - 1] & 2070 IEEE80211_RATE_VAL); 2071 #endif 2072 rs.nrates = sizeof rs.rates; 2073 } 2074 bcopy(ni->ni_rates.rs_rates, rs.rates, rs.nrates); 2075 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2076 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2077 if (error != 0) 2078 return error; 2079 2080 data = htole32(ni->ni_rssi); 2081 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2082 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2083 if (error != 0) 2084 return error; 2085 2086 if (ic->ic_flags & IEEE80211_F_QOS) { 2087 iwi_update_edca(ic); 2088 2089 frm = ieee80211_add_qos_capability(buf, ic); 2090 DPRINTF(("Setting QoS Capability IE length %d\n", frm - buf)); 2091 error = iwi_cmd(sc, IWI_CMD_SET_QOS_CAP, buf, frm - buf, 1); 2092 if (error != 0) 2093 return error; 2094 } 2095 if (ic->ic_flags & IEEE80211_F_RSNON) { 2096 /* tell firmware to add WPA/RSN IE to (re)assoc request */ 2097 if (ni->ni_rsnprotos == IEEE80211_PROTO_RSN) 2098 frm = ieee80211_add_rsn(buf, ic, ni); 2099 else 2100 frm = ieee80211_add_wpa(buf, ic, ni); 2101 DPRINTF(("Setting RSN IE length %d\n", frm - buf)); 2102 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, buf, frm - buf, 1); 2103 if (error != 0) 2104 return error; 2105 } 2106 2107 bzero(&assoc, sizeof assoc); 2108 #ifndef IEEE80211_STA_ONLY 2109 if (ic->ic_flags & IEEE80211_F_SIBSS) 2110 assoc.type = IWI_ASSOC_SIBSS; 2111 else 2112 #endif 2113 assoc.type = IWI_ASSOC_ASSOCIATE; 2114 assoc.policy = 0; 2115 if (ic->ic_flags & IEEE80211_F_RSNON) 2116 assoc.policy |= htole16(IWI_ASSOC_POLICY_RSN); 2117 if (ic->ic_flags & IEEE80211_F_QOS) 2118 assoc.policy |= htole16(IWI_ASSOC_POLICY_QOS); 2119 if (ic->ic_curmode == IEEE80211_MODE_11A) 2120 assoc.mode = IWI_MODE_11A; 2121 else if (ic->ic_curmode == IEEE80211_MODE_11B) 2122 assoc.mode = IWI_MODE_11B; 2123 else /* assume 802.11b/g */ 2124 assoc.mode = IWI_MODE_11G; 2125 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2126 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2127 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2128 assoc.plen = IWI_ASSOC_SHPREAMBLE; 2129 bcopy(ni->ni_tstamp, assoc.tstamp, 8); 2130 capinfo = IEEE80211_CAPINFO_ESS; 2131 if (ic->ic_flags & IEEE80211_F_WEPON) 2132 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2133 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2134 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2135 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2136 if (ic->ic_caps & IEEE80211_C_SHSLOT) 2137 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2138 assoc.capinfo = htole16(capinfo); 2139 2140 assoc.lintval = htole16(ic->ic_lintval); 2141 assoc.intval = htole16(ni->ni_intval); 2142 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2143 #ifndef IEEE80211_STA_ONLY 2144 if (ic->ic_opmode == IEEE80211_M_IBSS) 2145 IEEE80211_ADDR_COPY(assoc.dst, etherbroadcastaddr); 2146 else 2147 #endif 2148 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2149 2150 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2151 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2152 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2153 } 2154 2155 int 2156 iwi_init(struct ifnet *ifp) 2157 { 2158 struct iwi_softc *sc = ifp->if_softc; 2159 struct ieee80211com *ic = &sc->sc_ic; 2160 struct iwi_firmware_hdr *hdr; 2161 const char *name, *fw; 2162 u_char *data; 2163 size_t size; 2164 int i, ac, error; 2165 2166 iwi_stop(ifp, 0); 2167 2168 if ((error = iwi_reset(sc)) != 0) { 2169 printf("%s: could not reset adapter\n", sc->sc_dev.dv_xname); 2170 goto fail1; 2171 } 2172 2173 switch (ic->ic_opmode) { 2174 case IEEE80211_M_STA: 2175 name = "iwi-bss"; 2176 break; 2177 #ifndef IEEE80211_STA_ONLY 2178 case IEEE80211_M_IBSS: 2179 case IEEE80211_M_AHDEMO: 2180 name = "iwi-ibss"; 2181 break; 2182 #endif 2183 case IEEE80211_M_MONITOR: 2184 name = "iwi-monitor"; 2185 break; 2186 default: 2187 /* should not get there */ 2188 error = EINVAL; 2189 goto fail1; 2190 } 2191 2192 if ((error = loadfirmware(name, &data, &size)) != 0) { 2193 printf("%s: error %d, could not read firmware %s\n", 2194 sc->sc_dev.dv_xname, error, name); 2195 goto fail1; 2196 } 2197 if (size < sizeof (struct iwi_firmware_hdr)) { 2198 printf("%s: firmware image too short: %zu bytes\n", 2199 sc->sc_dev.dv_xname, size); 2200 error = EINVAL; 2201 goto fail2; 2202 } 2203 hdr = (struct iwi_firmware_hdr *)data; 2204 2205 if (hdr->vermaj < 3 || hdr->bootsz == 0 || hdr->ucodesz == 0 || 2206 hdr->mainsz == 0) { 2207 printf("%s: firmware image too old (need at least 3.0)\n", 2208 sc->sc_dev.dv_xname); 2209 error = EINVAL; 2210 goto fail2; 2211 } 2212 2213 if (size < sizeof (struct iwi_firmware_hdr) + letoh32(hdr->bootsz) + 2214 letoh32(hdr->ucodesz) + letoh32(hdr->mainsz)) { 2215 printf("%s: firmware image too short: %zu bytes\n", 2216 sc->sc_dev.dv_xname, size); 2217 error = EINVAL; 2218 goto fail2; 2219 } 2220 2221 fw = (const char *)data + sizeof (struct iwi_firmware_hdr); 2222 if ((error = iwi_load_firmware(sc, fw, letoh32(hdr->bootsz))) != 0) { 2223 printf("%s: could not load boot firmware\n", 2224 sc->sc_dev.dv_xname); 2225 goto fail2; 2226 } 2227 2228 fw = (const char *)data + sizeof (struct iwi_firmware_hdr) + 2229 letoh32(hdr->bootsz); 2230 if ((error = iwi_load_ucode(sc, fw, letoh32(hdr->ucodesz))) != 0) { 2231 printf("%s: could not load microcode\n", sc->sc_dev.dv_xname); 2232 goto fail2; 2233 } 2234 2235 iwi_stop_master(sc); 2236 2237 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.map->dm_segs[0].ds_addr); 2238 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, IWI_CMD_RING_COUNT); 2239 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2240 2241 for (ac = 0; ac < EDCA_NUM_AC; ac++) { 2242 CSR_WRITE_4(sc, IWI_CSR_TX_BASE(ac), 2243 sc->txq[ac].map->dm_segs[0].ds_addr); 2244 CSR_WRITE_4(sc, IWI_CSR_TX_SIZE(ac), IWI_TX_RING_COUNT); 2245 CSR_WRITE_4(sc, IWI_CSR_TX_WIDX(ac), sc->txq[ac].cur); 2246 } 2247 2248 for (i = 0; i < IWI_RX_RING_COUNT; i++) { 2249 struct iwi_rx_data *data = &sc->rxq.data[i]; 2250 CSR_WRITE_4(sc, data->reg, data->map->dm_segs[0].ds_addr); 2251 } 2252 2253 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, IWI_RX_RING_COUNT - 1); 2254 2255 fw = (const char *)data + sizeof (struct iwi_firmware_hdr) + 2256 letoh32(hdr->bootsz) + letoh32(hdr->ucodesz); 2257 if ((error = iwi_load_firmware(sc, fw, letoh32(hdr->mainsz))) != 0) { 2258 printf("%s: could not load main firmware\n", 2259 sc->sc_dev.dv_xname); 2260 goto fail2; 2261 } 2262 2263 free(data, M_DEVBUF, size); 2264 2265 if ((error = iwi_config(sc)) != 0) { 2266 printf("%s: device configuration failed\n", 2267 sc->sc_dev.dv_xname); 2268 goto fail1; 2269 } 2270 2271 ifq_clr_oactive(&ifp->if_snd); 2272 ifp->if_flags |= IFF_RUNNING; 2273 2274 if (ic->ic_opmode != IEEE80211_M_MONITOR) 2275 ieee80211_begin_scan(ifp); 2276 else 2277 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2278 2279 return 0; 2280 2281 fail2: free(data, M_DEVBUF, size); 2282 fail1: iwi_stop(ifp, 0); 2283 return error; 2284 } 2285 2286 void 2287 iwi_stop(struct ifnet *ifp, int disable) 2288 { 2289 struct iwi_softc *sc = ifp->if_softc; 2290 struct ieee80211com *ic = &sc->sc_ic; 2291 int ac; 2292 2293 sc->sc_tx_timer = 0; 2294 ifp->if_timer = 0; 2295 ifp->if_flags &= ~IFF_RUNNING; 2296 ifq_clr_oactive(&ifp->if_snd); 2297 2298 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2299 2300 iwi_stop_master(sc); 2301 2302 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2303 2304 /* reset rings */ 2305 iwi_reset_cmd_ring(sc, &sc->cmdq); 2306 for (ac = 0; ac < EDCA_NUM_AC; ac++) 2307 iwi_reset_tx_ring(sc, &sc->txq[ac]); 2308 iwi_reset_rx_ring(sc, &sc->rxq); 2309 } 2310 2311 struct cfdriver iwi_cd = { 2312 NULL, "iwi", DV_IFNET 2313 }; 2314