1 /* $OpenBSD: if_iwi.c,v 1.145 2021/04/15 18:32:19 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 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 rxi.rxi_flags = 0; 964 rxi.rxi_rssi = frame->rssi_dbm; 965 rxi.rxi_tstamp = 0; /* unused */ 966 ieee80211_inputm(ifp, m, ni, &rxi, ml); 967 968 /* node is no longer needed */ 969 ieee80211_release_node(ic, ni); 970 } 971 972 void 973 iwi_notification_intr(struct iwi_softc *sc, struct iwi_rx_data *data, 974 struct iwi_notif *notif) 975 { 976 struct ieee80211com *ic = &sc->sc_ic; 977 struct ieee80211_node *ni = ic->ic_bss; 978 struct ifnet *ifp = &ic->ic_if; 979 980 switch (notif->type) { 981 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 982 { 983 #ifdef IWI_DEBUG 984 struct iwi_notif_scan_channel *chan = 985 (struct iwi_notif_scan_channel *)(notif + 1); 986 #endif 987 DPRINTFN(2, ("Scanning channel (%u)\n", chan->nchan)); 988 break; 989 } 990 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 991 { 992 #ifdef IWI_DEBUG 993 struct iwi_notif_scan_complete *scan = 994 (struct iwi_notif_scan_complete *)(notif + 1); 995 #endif 996 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 997 scan->status)); 998 999 /* monitor mode uses scan to set the channel ... */ 1000 if (ic->ic_opmode != IEEE80211_M_MONITOR) 1001 ieee80211_end_scan(ifp); 1002 else 1003 iwi_set_chan(sc, ic->ic_ibss_chan); 1004 break; 1005 } 1006 case IWI_NOTIF_TYPE_AUTHENTICATION: 1007 { 1008 struct iwi_notif_authentication *auth = 1009 (struct iwi_notif_authentication *)(notif + 1); 1010 1011 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1012 1013 switch (auth->state) { 1014 case IWI_AUTHENTICATED: 1015 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1016 break; 1017 1018 case IWI_DEAUTHENTICATED: 1019 break; 1020 1021 default: 1022 printf("%s: unknown authentication state %u\n", 1023 sc->sc_dev.dv_xname, auth->state); 1024 } 1025 break; 1026 } 1027 case IWI_NOTIF_TYPE_ASSOCIATION: 1028 { 1029 struct iwi_notif_association *assoc = 1030 (struct iwi_notif_association *)(notif + 1); 1031 1032 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1033 assoc->status)); 1034 1035 switch (assoc->state) { 1036 case IWI_AUTHENTICATED: 1037 /* re-association, do nothing */ 1038 break; 1039 1040 case IWI_ASSOCIATED: 1041 if (ic->ic_flags & IEEE80211_F_RSNON) 1042 ni->ni_rsn_supp_state = RSNA_SUPP_PTKSTART; 1043 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1044 break; 1045 1046 case IWI_DEASSOCIATED: 1047 ieee80211_begin_scan(ifp); 1048 break; 1049 1050 default: 1051 printf("%s: unknown association state %u\n", 1052 sc->sc_dev.dv_xname, assoc->state); 1053 } 1054 break; 1055 } 1056 case IWI_NOTIF_TYPE_BEACON: 1057 { 1058 struct iwi_notif_beacon *beacon = 1059 (struct iwi_notif_beacon *)(notif + 1); 1060 1061 if (letoh32(beacon->status) == IWI_BEACON_MISSED) { 1062 /* XXX should roam when too many beacons missed */ 1063 DPRINTFN(2, ("%s: %u beacon(s) missed\n", 1064 sc->sc_dev.dv_xname, letoh32(beacon->count))); 1065 } 1066 break; 1067 } 1068 case IWI_NOTIF_TYPE_BAD_LINK: 1069 DPRINTFN(2, ("link deterioration detected\n")); 1070 break; 1071 1072 case IWI_NOTIF_TYPE_NOISE: 1073 DPRINTFN(5, ("Measured noise %u\n", 1074 letoh32(*(uint32_t *)(notif + 1)) & 0xff)); 1075 break; 1076 1077 default: 1078 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1079 } 1080 } 1081 1082 void 1083 iwi_rx_intr(struct iwi_softc *sc) 1084 { 1085 struct mbuf_list ml = MBUF_LIST_INITIALIZER(); 1086 struct iwi_rx_data *data; 1087 struct iwi_hdr *hdr; 1088 uint32_t hw; 1089 1090 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1091 1092 for (; sc->rxq.cur != hw;) { 1093 data = &sc->rxq.data[sc->rxq.cur]; 1094 1095 bus_dmamap_sync(sc->sc_dmat, data->map, 0, MCLBYTES, 1096 BUS_DMASYNC_POSTREAD); 1097 1098 hdr = mtod(data->m, struct iwi_hdr *); 1099 1100 switch (hdr->type) { 1101 case IWI_HDR_TYPE_FRAME: 1102 iwi_frame_intr(sc, data, 1103 (struct iwi_frame *)(hdr + 1), &ml); 1104 break; 1105 1106 case IWI_HDR_TYPE_NOTIF: 1107 iwi_notification_intr(sc, data, 1108 (struct iwi_notif *)(hdr + 1)); 1109 break; 1110 1111 default: 1112 printf("%s: unknown hdr type %u\n", 1113 sc->sc_dev.dv_xname, hdr->type); 1114 } 1115 1116 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1117 } 1118 if_input(&sc->sc_ic.ic_if, &ml); 1119 1120 /* tell the firmware what we have processed */ 1121 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1122 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1123 } 1124 1125 void 1126 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1127 { 1128 struct ieee80211com *ic = &sc->sc_ic; 1129 struct ifnet *ifp = &ic->ic_if; 1130 struct iwi_tx_data *data; 1131 uint32_t hw; 1132 1133 hw = CSR_READ_4(sc, txq->csr_ridx); 1134 1135 for (; txq->next != hw;) { 1136 data = &txq->data[txq->next]; 1137 1138 bus_dmamap_unload(sc->sc_dmat, data->map); 1139 m_freem(data->m); 1140 data->m = NULL; 1141 ieee80211_release_node(ic, data->ni); 1142 data->ni = NULL; 1143 1144 txq->queued--; 1145 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1146 } 1147 1148 sc->sc_tx_timer = 0; 1149 ifq_clr_oactive(&ifp->if_snd); 1150 (*ifp->if_start)(ifp); 1151 } 1152 1153 int 1154 iwi_intr(void *arg) 1155 { 1156 struct iwi_softc *sc = arg; 1157 struct ifnet *ifp = &sc->sc_ic.ic_if; 1158 uint32_t r; 1159 1160 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1161 return 0; 1162 1163 /* disable interrupts */ 1164 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1165 1166 /* acknowledge interrupts */ 1167 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1168 1169 if (r & IWI_INTR_FATAL_ERROR) { 1170 printf("%s: fatal firmware error\n", sc->sc_dev.dv_xname); 1171 iwi_stop(ifp, 1); 1172 task_add(systq, &sc->init_task); 1173 return 1; 1174 } 1175 1176 if (r & IWI_INTR_FW_INITED) 1177 wakeup(sc); 1178 1179 if (r & IWI_INTR_RADIO_OFF) { 1180 DPRINTF(("radio transmitter off\n")); 1181 iwi_stop(ifp, 1); 1182 return 1; 1183 } 1184 1185 if (r & IWI_INTR_CMD_DONE) { 1186 /* kick next pending command if any */ 1187 sc->cmdq.next = (sc->cmdq.next + 1) % IWI_CMD_RING_COUNT; 1188 if (--sc->cmdq.queued > 0) 1189 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.next); 1190 1191 wakeup(sc); 1192 } 1193 1194 if (r & IWI_INTR_TX1_DONE) 1195 iwi_tx_intr(sc, &sc->txq[0]); 1196 1197 if (r & IWI_INTR_TX2_DONE) 1198 iwi_tx_intr(sc, &sc->txq[1]); 1199 1200 if (r & IWI_INTR_TX3_DONE) 1201 iwi_tx_intr(sc, &sc->txq[2]); 1202 1203 if (r & IWI_INTR_TX4_DONE) 1204 iwi_tx_intr(sc, &sc->txq[3]); 1205 1206 if (r & IWI_INTR_RX_DONE) 1207 iwi_rx_intr(sc); 1208 1209 /* re-enable interrupts */ 1210 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1211 1212 return 1; 1213 } 1214 1215 int 1216 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, int async) 1217 { 1218 struct iwi_cmd_desc *desc; 1219 1220 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1221 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1222 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1223 desc->type = type; 1224 desc->len = len; 1225 bcopy(data, desc->data, len); 1226 1227 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.map, 1228 sc->cmdq.cur * sizeof (struct iwi_cmd_desc), 1229 sizeof (struct iwi_cmd_desc), BUS_DMASYNC_PREWRITE); 1230 1231 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1232 type, len)); 1233 1234 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1235 1236 /* don't kick cmd immediately if another async command is pending */ 1237 if (++sc->cmdq.queued == 1) { 1238 sc->cmdq.next = sc->cmdq.cur; 1239 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.next); 1240 } 1241 1242 return async ? 0 : tsleep_nsec(sc, PCATCH, "iwicmd", SEC_TO_NSEC(1)); 1243 } 1244 1245 /* ARGSUSED */ 1246 int 1247 iwi_send_mgmt(struct ieee80211com *ic, struct ieee80211_node *ni, int type, 1248 int arg1, int arg2) 1249 { 1250 return EOPNOTSUPP; 1251 } 1252 1253 int 1254 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni) 1255 { 1256 struct iwi_softc *sc = ifp->if_softc; 1257 struct ieee80211com *ic = &sc->sc_ic; 1258 struct ieee80211_frame *wh; 1259 struct ieee80211_key *k; 1260 struct iwi_tx_data *data; 1261 struct iwi_tx_desc *desc; 1262 struct iwi_tx_ring *txq = &sc->txq[0]; 1263 int hdrlen, error, i, station = 0; 1264 1265 wh = mtod(m0, struct ieee80211_frame *); 1266 1267 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1268 k = ieee80211_get_txkey(ic, wh, ni); 1269 1270 if ((m0 = ieee80211_encrypt(ic, m0, k)) == NULL) 1271 return ENOBUFS; 1272 1273 /* packet header may have moved, reset our local pointer */ 1274 wh = mtod(m0, struct ieee80211_frame *); 1275 } 1276 1277 #if NBPFILTER > 0 1278 if (sc->sc_drvbpf != NULL) { 1279 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1280 1281 tap->wt_flags = 0; 1282 tap->wt_chan_freq = htole16(ic->ic_bss->ni_chan->ic_freq); 1283 tap->wt_chan_flags = htole16(ic->ic_bss->ni_chan->ic_flags); 1284 1285 bpf_mtap_hdr(sc->sc_drvbpf, tap, sc->sc_txtap_len, 1286 m0, BPF_DIRECTION_OUT); 1287 } 1288 #endif 1289 1290 data = &txq->data[txq->cur]; 1291 desc = &txq->desc[txq->cur]; 1292 1293 /* copy and trim IEEE802.11 header */ 1294 hdrlen = ieee80211_get_hdrlen(wh); 1295 bcopy(wh, &desc->wh, hdrlen); 1296 m_adj(m0, hdrlen); 1297 1298 #ifndef IEEE80211_STA_ONLY 1299 if (ic->ic_opmode == IEEE80211_M_IBSS) { 1300 station = iwi_find_txnode(sc, desc->wh.i_addr1); 1301 if (station == -1) { 1302 m_freem(m0); 1303 ieee80211_release_node(ic, ni); 1304 ifp->if_oerrors++; 1305 return 0; 1306 } 1307 } 1308 #endif 1309 1310 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1311 BUS_DMA_NOWAIT); 1312 if (error != 0 && error != EFBIG) { 1313 printf("%s: can't map mbuf (error %d)\n", 1314 sc->sc_dev.dv_xname, error); 1315 m_freem(m0); 1316 return error; 1317 } 1318 if (error != 0) { 1319 /* too many fragments, linearize */ 1320 if (m_defrag(m0, M_DONTWAIT)) { 1321 m_freem(m0); 1322 return ENOBUFS; 1323 } 1324 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1325 BUS_DMA_NOWAIT); 1326 if (error != 0) { 1327 printf("%s: can't map mbuf (error %d)\n", 1328 sc->sc_dev.dv_xname, error); 1329 m_freem(m0); 1330 return error; 1331 } 1332 } 1333 1334 data->m = m0; 1335 data->ni = ni; 1336 1337 desc->hdr.type = IWI_HDR_TYPE_DATA; 1338 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1339 desc->cmd = IWI_DATA_CMD_TX; 1340 desc->len = htole16(m0->m_pkthdr.len); 1341 desc->station = station; 1342 desc->flags = IWI_DATA_FLAG_NO_WEP; 1343 desc->xflags = 0; 1344 1345 if (!IEEE80211_IS_MULTICAST(desc->wh.i_addr1)) 1346 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1347 1348 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1349 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1350 1351 if ((desc->wh.i_fc[0] & 1352 (IEEE80211_FC0_TYPE_MASK | IEEE80211_FC0_SUBTYPE_QOS)) == 1353 (IEEE80211_FC0_TYPE_DATA | IEEE80211_FC0_SUBTYPE_QOS)) 1354 desc->xflags |= IWI_DATA_XFLAG_QOS; 1355 1356 if (ic->ic_curmode == IEEE80211_MODE_11B) 1357 desc->xflags |= IWI_DATA_XFLAG_CCK; 1358 1359 desc->nseg = htole32(data->map->dm_nsegs); 1360 for (i = 0; i < data->map->dm_nsegs; i++) { 1361 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1362 desc->seg_len[i] = htole16(data->map->dm_segs[i].ds_len); 1363 } 1364 1365 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1366 BUS_DMASYNC_PREWRITE); 1367 bus_dmamap_sync(sc->sc_dmat, txq->map, 1368 txq->cur * sizeof (struct iwi_tx_desc), 1369 sizeof (struct iwi_tx_desc), BUS_DMASYNC_PREWRITE); 1370 1371 DPRINTFN(5, ("sending data frame idx=%u len=%u nseg=%u\n", txq->cur, 1372 letoh16(desc->len), data->map->dm_nsegs)); 1373 1374 txq->queued++; 1375 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1376 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1377 1378 return 0; 1379 } 1380 1381 void 1382 iwi_start(struct ifnet *ifp) 1383 { 1384 struct iwi_softc *sc = ifp->if_softc; 1385 struct ieee80211com *ic = &sc->sc_ic; 1386 struct mbuf *m0; 1387 struct ieee80211_node *ni; 1388 1389 if (ic->ic_state != IEEE80211_S_RUN) 1390 return; 1391 1392 for (;;) { 1393 if (sc->txq[0].queued + IWI_MAX_NSEG + 2 >= IWI_TX_RING_COUNT) { 1394 ifq_set_oactive(&ifp->if_snd); 1395 break; 1396 } 1397 1398 m0 = ifq_dequeue(&ifp->if_snd); 1399 if (m0 == NULL) 1400 break; 1401 1402 #if NBPFILTER > 0 1403 if (ifp->if_bpf != NULL) 1404 bpf_mtap(ifp->if_bpf, m0, BPF_DIRECTION_OUT); 1405 #endif 1406 1407 m0 = ieee80211_encap(ifp, m0, &ni); 1408 if (m0 == NULL) 1409 continue; 1410 1411 #if NBPFILTER > 0 1412 if (ic->ic_rawbpf != NULL) 1413 bpf_mtap(ic->ic_rawbpf, m0, BPF_DIRECTION_OUT); 1414 #endif 1415 1416 if (iwi_tx_start(ifp, m0, ni) != 0) { 1417 if (ni != NULL) 1418 ieee80211_release_node(ic, ni); 1419 ifp->if_oerrors++; 1420 break; 1421 } 1422 1423 /* start watchdog timer */ 1424 sc->sc_tx_timer = 5; 1425 ifp->if_timer = 1; 1426 } 1427 } 1428 1429 void 1430 iwi_watchdog(struct ifnet *ifp) 1431 { 1432 struct iwi_softc *sc = ifp->if_softc; 1433 1434 ifp->if_timer = 0; 1435 1436 if (sc->sc_tx_timer > 0) { 1437 if (--sc->sc_tx_timer == 0) { 1438 printf("%s: device timeout\n", sc->sc_dev.dv_xname); 1439 iwi_stop(ifp, 1); 1440 ifp->if_oerrors++; 1441 return; 1442 } 1443 ifp->if_timer = 1; 1444 } 1445 1446 ieee80211_watchdog(ifp); 1447 } 1448 1449 int 1450 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 1451 { 1452 struct iwi_softc *sc = ifp->if_softc; 1453 int s, error = 0; 1454 1455 error = rw_enter(&sc->sc_rwlock, RW_WRITE | RW_INTR); 1456 if (error) 1457 return error; 1458 s = splnet(); 1459 1460 switch (cmd) { 1461 case SIOCSIFADDR: 1462 ifp->if_flags |= IFF_UP; 1463 /* FALLTHROUGH */ 1464 case SIOCSIFFLAGS: 1465 if (ifp->if_flags & IFF_UP) { 1466 if (!(ifp->if_flags & IFF_RUNNING)) 1467 iwi_init(ifp); 1468 } else { 1469 if (ifp->if_flags & IFF_RUNNING) 1470 iwi_stop(ifp, 1); 1471 } 1472 break; 1473 1474 case SIOCG80211TXPOWER: 1475 /* 1476 * If the hardware radio transmitter switch is off, report a 1477 * tx power of IEEE80211_TXPOWER_MIN to indicate that radio 1478 * transmitter is killed. 1479 */ 1480 ((struct ieee80211_txpower *)data)->i_val = 1481 (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) ? 1482 sc->sc_ic.ic_txpower : IEEE80211_TXPOWER_MIN; 1483 break; 1484 1485 default: 1486 error = ieee80211_ioctl(ifp, cmd, data); 1487 } 1488 1489 if (error == ENETRESET) { 1490 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == 1491 (IFF_UP | IFF_RUNNING)) 1492 iwi_init(ifp); 1493 error = 0; 1494 } 1495 1496 splx(s); 1497 rw_exit_write(&sc->sc_rwlock); 1498 return error; 1499 } 1500 1501 void 1502 iwi_stop_master(struct iwi_softc *sc) 1503 { 1504 uint32_t tmp; 1505 int ntries; 1506 1507 /* disable interrupts */ 1508 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1509 1510 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1511 for (ntries = 0; ntries < 5; ntries++) { 1512 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1513 break; 1514 DELAY(10); 1515 } 1516 if (ntries == 5) { 1517 printf("%s: timeout waiting for master\n", 1518 sc->sc_dev.dv_xname); 1519 } 1520 1521 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1522 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 1523 } 1524 1525 int 1526 iwi_reset(struct iwi_softc *sc) 1527 { 1528 uint32_t tmp; 1529 int i, ntries; 1530 1531 iwi_stop_master(sc); 1532 1533 /* move adapter to D0 state */ 1534 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1535 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 1536 1537 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1538 1539 /* wait for clock stabilization */ 1540 for (ntries = 0; ntries < 1000; ntries++) { 1541 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1542 break; 1543 DELAY(200); 1544 } 1545 if (ntries == 1000) { 1546 printf("%s: timeout waiting for clock stabilization\n", 1547 sc->sc_dev.dv_xname); 1548 return ETIMEDOUT; 1549 } 1550 1551 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1552 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SW_RESET); 1553 1554 DELAY(10); 1555 1556 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1557 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 1558 1559 /* clear NIC memory */ 1560 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1561 for (i = 0; i < 0xc000; i++) 1562 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1563 1564 return 0; 1565 } 1566 1567 int 1568 iwi_load_ucode(struct iwi_softc *sc, const char *data, int size) 1569 { 1570 const uint16_t *w; 1571 uint32_t tmp; 1572 int ntries, i; 1573 1574 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1575 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_STOP_MASTER); 1576 for (ntries = 0; ntries < 5; ntries++) { 1577 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1578 break; 1579 DELAY(10); 1580 } 1581 if (ntries == 5) { 1582 printf("%s: timeout waiting for master\n", 1583 sc->sc_dev.dv_xname); 1584 return ETIMEDOUT; 1585 } 1586 1587 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1588 DELAY(5000); 1589 1590 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1591 CSR_WRITE_4(sc, IWI_CSR_RST, tmp & ~IWI_RST_PRINCETON_RESET); 1592 1593 DELAY(5000); 1594 MEM_WRITE_4(sc, 0x3000e0, 0); 1595 DELAY(1000); 1596 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, 1); 1597 DELAY(1000); 1598 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, 0); 1599 DELAY(1000); 1600 MEM_WRITE_1(sc, 0x200000, 0x00); 1601 MEM_WRITE_1(sc, 0x200000, 0x40); 1602 DELAY(1000); 1603 1604 /* adapter is buggy, we must set the address for each word */ 1605 for (w = (const uint16_t *)data; size > 0; w++, size -= 2) 1606 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 1607 1608 MEM_WRITE_1(sc, 0x200000, 0x00); 1609 MEM_WRITE_1(sc, 0x200000, 0x80); 1610 1611 /* wait until we get an answer */ 1612 for (ntries = 0; ntries < 100; ntries++) { 1613 if (MEM_READ_1(sc, 0x200000) & 1) 1614 break; 1615 DELAY(100); 1616 } 1617 if (ntries == 100) { 1618 printf("%s: timeout waiting for ucode to initialize\n", 1619 sc->sc_dev.dv_xname); 1620 return ETIMEDOUT; 1621 } 1622 1623 /* read the answer or the firmware will not initialize properly */ 1624 for (i = 0; i < 7; i++) 1625 MEM_READ_4(sc, 0x200004); 1626 1627 MEM_WRITE_1(sc, 0x200000, 0x00); 1628 1629 return 0; 1630 } 1631 1632 /* macro to handle unaligned little endian data in firmware image */ 1633 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 1634 1635 int 1636 iwi_load_firmware(struct iwi_softc *sc, const char *data, int size) 1637 { 1638 bus_dmamap_t map; 1639 bus_dma_segment_t seg; 1640 caddr_t virtaddr; 1641 u_char *p, *end; 1642 uint32_t sentinel, tmp, ctl, src, dst, sum, len, mlen; 1643 int ntries, nsegs, error; 1644 1645 /* allocate DMA memory to store firmware image */ 1646 error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, 1647 BUS_DMA_NOWAIT, &map); 1648 if (error != 0) { 1649 printf("%s: could not create firmware DMA map\n", 1650 sc->sc_dev.dv_xname); 1651 goto fail1; 1652 } 1653 1654 error = bus_dmamem_alloc(sc->sc_dmat, size, PAGE_SIZE, 0, &seg, 1, 1655 &nsegs, BUS_DMA_NOWAIT); 1656 if (error != 0) { 1657 printf("%s: could not allocate firmware DMA memory\n", 1658 sc->sc_dev.dv_xname); 1659 goto fail2; 1660 } 1661 1662 error = bus_dmamem_map(sc->sc_dmat, &seg, nsegs, size, &virtaddr, 1663 BUS_DMA_NOWAIT); 1664 if (error != 0) { 1665 printf("%s: can't map firmware DMA memory\n", 1666 sc->sc_dev.dv_xname); 1667 goto fail3; 1668 } 1669 1670 error = bus_dmamap_load(sc->sc_dmat, map, virtaddr, size, NULL, 1671 BUS_DMA_NOWAIT); 1672 if (error != 0) { 1673 printf("%s: could not load firmware DMA map\n", 1674 sc->sc_dev.dv_xname); 1675 goto fail4; 1676 } 1677 1678 /* copy firmware image to DMA memory */ 1679 bcopy(data, virtaddr, size); 1680 1681 /* make sure the adapter will get up-to-date values */ 1682 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 1683 1684 /* tell the adapter where the command blocks are stored */ 1685 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 1686 1687 /* 1688 * Store command blocks into adapter's internal memory using register 1689 * indirections. The adapter will read the firmware image through DMA 1690 * using information stored in command blocks. 1691 */ 1692 src = map->dm_segs[0].ds_addr; 1693 p = virtaddr; 1694 end = p + size; 1695 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 1696 1697 while (p < end) { 1698 dst = GETLE32(p); p += 4; src += 4; 1699 len = GETLE32(p); p += 4; src += 4; 1700 p += len; 1701 1702 while (len > 0) { 1703 mlen = min(len, IWI_CB_MAXDATALEN); 1704 1705 ctl = IWI_CB_DEFAULT_CTL | mlen; 1706 sum = ctl ^ src ^ dst; 1707 1708 /* write a command block */ 1709 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 1710 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 1711 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 1712 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 1713 1714 src += mlen; 1715 dst += mlen; 1716 len -= mlen; 1717 } 1718 } 1719 1720 /* write a fictive final command block (sentinel) */ 1721 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 1722 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1723 1724 tmp = CSR_READ_4(sc, IWI_CSR_RST); 1725 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 1726 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 1727 1728 /* tell the adapter to start processing command blocks */ 1729 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 1730 1731 /* wait until the adapter has processed all command blocks */ 1732 for (ntries = 0; ntries < 400; ntries++) { 1733 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 1734 break; 1735 DELAY(100); 1736 } 1737 if (ntries == 400) { 1738 printf("%s: timeout processing cb\n", sc->sc_dev.dv_xname); 1739 error = ETIMEDOUT; 1740 goto fail5; 1741 } 1742 1743 /* we're done with command blocks processing */ 1744 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 1745 1746 /* allow interrupts so we know when the firmware is inited */ 1747 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 1748 1749 /* tell the adapter to initialize the firmware */ 1750 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 1751 1752 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 1753 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 1754 1755 /* wait at most one second for firmware initialization to complete */ 1756 if ((error = tsleep_nsec(sc, PCATCH, "iwiinit", SEC_TO_NSEC(1))) != 0) { 1757 printf("%s: timeout waiting for firmware initialization to " 1758 "complete\n", sc->sc_dev.dv_xname); 1759 goto fail5; 1760 } 1761 1762 fail5: bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 1763 bus_dmamap_unload(sc->sc_dmat, map); 1764 fail4: bus_dmamem_unmap(sc->sc_dmat, virtaddr, size); 1765 fail3: bus_dmamem_free(sc->sc_dmat, &seg, 1); 1766 fail2: bus_dmamap_destroy(sc->sc_dmat, map); 1767 fail1: return error; 1768 } 1769 1770 int 1771 iwi_config(struct iwi_softc *sc) 1772 { 1773 struct ieee80211com *ic = &sc->sc_ic; 1774 struct ifnet *ifp = &ic->ic_if; 1775 struct iwi_configuration config; 1776 struct iwi_rateset rs; 1777 struct iwi_txpower power; 1778 uint32_t data; 1779 int error, nchan, i; 1780 1781 IEEE80211_ADDR_COPY(ic->ic_myaddr, LLADDR(ifp->if_sadl)); 1782 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 1783 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 1784 IEEE80211_ADDR_LEN, 0); 1785 if (error != 0) 1786 return error; 1787 1788 bzero(&config, sizeof config); 1789 config.multicast_enabled = 1; 1790 config.silence_threshold = 30; 1791 config.report_noise = 1; 1792 config.answer_pbreq = 1793 #ifndef IEEE80211_STA_ONLY 1794 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 1795 #endif 1796 0; 1797 DPRINTF(("Configuring adapter\n")); 1798 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config, 0); 1799 if (error != 0) 1800 return error; 1801 1802 data = htole32(IWI_POWER_MODE_CAM); 1803 DPRINTF(("Setting power mode to %u\n", letoh32(data))); 1804 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 1805 if (error != 0) 1806 return error; 1807 1808 data = htole32(ic->ic_rtsthreshold); 1809 DPRINTF(("Setting RTS threshold to %u\n", letoh32(data))); 1810 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 1811 if (error != 0) 1812 return error; 1813 1814 data = htole32(ic->ic_fragthreshold); 1815 DPRINTF(("Setting fragmentation threshold to %u\n", letoh32(data))); 1816 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 1817 if (error != 0) 1818 return error; 1819 1820 /* 1821 * Set default Tx power for 802.11b/g and 802.11a channels. 1822 */ 1823 nchan = 0; 1824 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1825 if (!IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i])) 1826 continue; 1827 power.chan[nchan].chan = i; 1828 power.chan[nchan].power = IWI_TXPOWER_MAX; 1829 nchan++; 1830 } 1831 power.nchan = nchan; 1832 1833 power.mode = IWI_MODE_11G; 1834 DPRINTF(("Setting .11g channels tx power\n")); 1835 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 1836 if (error != 0) 1837 return error; 1838 1839 power.mode = IWI_MODE_11B; 1840 DPRINTF(("Setting .11b channels tx power\n")); 1841 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 1842 if (error != 0) 1843 return error; 1844 1845 nchan = 0; 1846 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1847 if (!IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) 1848 continue; 1849 power.chan[nchan].chan = i; 1850 power.chan[nchan].power = IWI_TXPOWER_MAX; 1851 nchan++; 1852 } 1853 power.nchan = nchan; 1854 1855 if (nchan > 0) { /* 2915ABG only */ 1856 power.mode = IWI_MODE_11A; 1857 DPRINTF(("Setting .11a channels tx power\n")); 1858 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 1859 0); 1860 if (error != 0) 1861 return error; 1862 } 1863 1864 rs.mode = IWI_MODE_11G; 1865 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1866 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 1867 bcopy(ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, rs.rates, 1868 rs.nrates); 1869 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 1870 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1871 if (error != 0) 1872 return error; 1873 1874 rs.mode = IWI_MODE_11A; 1875 rs.type = IWI_RATESET_TYPE_SUPPORTED; 1876 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 1877 bcopy(ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, rs.rates, 1878 rs.nrates); 1879 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 1880 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 1881 if (error != 0) 1882 return error; 1883 1884 /* if we have a desired ESSID, set it now */ 1885 if (ic->ic_des_esslen != 0) { 1886 #ifdef IWI_DEBUG 1887 if (iwi_debug > 0) { 1888 printf("Setting desired ESSID to "); 1889 ieee80211_print_essid(ic->ic_des_essid, 1890 ic->ic_des_esslen); 1891 printf("\n"); 1892 } 1893 #endif 1894 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ic->ic_des_essid, 1895 ic->ic_des_esslen, 0); 1896 if (error != 0) 1897 return error; 1898 } 1899 1900 arc4random_buf(&data, sizeof data); 1901 DPRINTF(("Setting random seed to %u\n", data)); 1902 error = iwi_cmd(sc, IWI_CMD_SET_RANDOM_SEED, &data, sizeof data, 0); 1903 if (error != 0) 1904 return error; 1905 1906 /* enable adapter */ 1907 DPRINTF(("Enabling adapter\n")); 1908 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 1909 } 1910 1911 void 1912 iwi_update_edca(struct ieee80211com *ic) 1913 { 1914 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 1915 #define IWI_TXOP(v) IEEE80211_TXOP_TO_US(v) 1916 struct iwi_softc *sc = ic->ic_softc; 1917 struct iwi_qos_cmd cmd; 1918 struct iwi_qos_params *qos; 1919 struct ieee80211_edca_ac_params *edca = ic->ic_edca_ac; 1920 int aci; 1921 1922 /* set default QoS parameters for CCK */ 1923 qos = &cmd.cck; 1924 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1925 qos->cwmin[aci] = IWI_EXP2(iwi_cck[aci].ac_ecwmin); 1926 qos->cwmax[aci] = IWI_EXP2(iwi_cck[aci].ac_ecwmax); 1927 qos->txop [aci] = IWI_TXOP(iwi_cck[aci].ac_txoplimit); 1928 qos->aifsn[aci] = iwi_cck[aci].ac_aifsn; 1929 qos->acm [aci] = 0; 1930 } 1931 /* set default QoS parameters for OFDM */ 1932 qos = &cmd.ofdm; 1933 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1934 qos->cwmin[aci] = IWI_EXP2(iwi_ofdm[aci].ac_ecwmin); 1935 qos->cwmax[aci] = IWI_EXP2(iwi_ofdm[aci].ac_ecwmax); 1936 qos->txop [aci] = IWI_TXOP(iwi_ofdm[aci].ac_txoplimit); 1937 qos->aifsn[aci] = iwi_ofdm[aci].ac_aifsn; 1938 qos->acm [aci] = 0; 1939 } 1940 /* set current QoS parameters */ 1941 qos = &cmd.current; 1942 for (aci = 0; aci < EDCA_NUM_AC; aci++) { 1943 qos->cwmin[aci] = IWI_EXP2(edca[aci].ac_ecwmin); 1944 qos->cwmax[aci] = IWI_EXP2(edca[aci].ac_ecwmax); 1945 qos->txop [aci] = IWI_TXOP(edca[aci].ac_txoplimit); 1946 qos->aifsn[aci] = edca[aci].ac_aifsn; 1947 qos->acm [aci] = 0; 1948 } 1949 1950 DPRINTF(("Setting QoS parameters\n")); 1951 (void)iwi_cmd(sc, IWI_CMD_SET_QOS_PARAMS, &cmd, sizeof cmd, 1); 1952 #undef IWI_EXP2 1953 #undef IWI_TXOP 1954 } 1955 1956 int 1957 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 1958 { 1959 struct ieee80211com *ic = &sc->sc_ic; 1960 struct iwi_scan scan; 1961 1962 bzero(&scan, sizeof scan); 1963 memset(scan.type, IWI_SCAN_TYPE_PASSIVE, sizeof scan.type); 1964 scan.passive = htole16(2000); 1965 scan.channels[0] = 1 | 1966 (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ); 1967 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 1968 1969 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 1970 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 1971 } 1972 1973 int 1974 iwi_scan(struct iwi_softc *sc) 1975 { 1976 struct ieee80211com *ic = &sc->sc_ic; 1977 struct iwi_scan scan; 1978 uint8_t *p; 1979 int i, count; 1980 1981 bzero(&scan, sizeof scan); 1982 1983 if (ic->ic_des_esslen != 0) { 1984 scan.bdirected = htole16(40); 1985 memset(scan.type, IWI_SCAN_TYPE_BDIRECTED, sizeof scan.type); 1986 } else { 1987 scan.broadcast = htole16(40); 1988 memset(scan.type, IWI_SCAN_TYPE_BROADCAST, sizeof scan.type); 1989 } 1990 1991 p = scan.channels; 1992 count = 0; 1993 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 1994 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) { 1995 *++p = i; 1996 count++; 1997 } 1998 } 1999 *(p - count) = IWI_CHAN_5GHZ | count; 2000 2001 p = (count > 0) ? p + 1 : scan.channels; 2002 count = 0; 2003 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2004 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i])) { 2005 *++p = i; 2006 count++; 2007 } 2008 } 2009 *(p - count) = IWI_CHAN_2GHZ | count; 2010 2011 DPRINTF(("Start scanning\n")); 2012 return iwi_cmd(sc, IWI_CMD_SCAN, &scan, sizeof scan, 1); 2013 } 2014 2015 int 2016 iwi_auth_and_assoc(struct iwi_softc *sc) 2017 { 2018 struct ieee80211com *ic = &sc->sc_ic; 2019 struct ieee80211_node *ni = ic->ic_bss; 2020 struct iwi_configuration config; 2021 struct iwi_associate assoc; 2022 struct iwi_rateset rs; 2023 uint8_t *frm; 2024 uint32_t data; 2025 uint16_t capinfo; 2026 uint8_t buf[64]; /* XXX max WPA/RSN/WMM IE length */ 2027 int error; 2028 2029 /* update adapter configuration */ 2030 bzero(&config, sizeof config); 2031 config.multicast_enabled = 1; 2032 config.disable_unicast_decryption = 1; 2033 config.disable_multicast_decryption = 1; 2034 config.silence_threshold = 30; 2035 config.report_noise = 1; 2036 config.allow_mgt = 1; 2037 config.answer_pbreq = 2038 #ifndef IEEE80211_STA_ONLY 2039 (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 2040 #endif 2041 0; 2042 if (ic->ic_curmode == IEEE80211_MODE_11G) 2043 config.bg_autodetection = 1; 2044 DPRINTF(("Configuring adapter\n")); 2045 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config, 1); 2046 if (error != 0) 2047 return error; 2048 2049 #ifdef IWI_DEBUG 2050 if (iwi_debug > 0) { 2051 printf("Setting ESSID to "); 2052 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2053 printf("\n"); 2054 } 2055 #endif 2056 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2057 if (error != 0) 2058 return error; 2059 2060 /* the rate set has already been "negotiated" */ 2061 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2062 IWI_MODE_11G; 2063 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2064 rs.nrates = ni->ni_rates.rs_nrates; 2065 if (rs.nrates > sizeof rs.rates) { 2066 #ifdef DIAGNOSTIC 2067 /* should not happen since the rates are negotiated */ 2068 printf("%s: XXX too many rates (count=%d, last=%d)\n", 2069 sc->sc_dev.dv_xname, ni->ni_rates.rs_nrates, 2070 ni->ni_rates.rs_rates[ni->ni_rates.rs_nrates - 1] & 2071 IEEE80211_RATE_VAL); 2072 #endif 2073 rs.nrates = sizeof rs.rates; 2074 } 2075 bcopy(ni->ni_rates.rs_rates, rs.rates, rs.nrates); 2076 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2077 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2078 if (error != 0) 2079 return error; 2080 2081 data = htole32(ni->ni_rssi); 2082 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2083 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2084 if (error != 0) 2085 return error; 2086 2087 if (ic->ic_flags & IEEE80211_F_QOS) { 2088 iwi_update_edca(ic); 2089 2090 frm = ieee80211_add_qos_capability(buf, ic); 2091 DPRINTF(("Setting QoS Capability IE length %d\n", frm - buf)); 2092 error = iwi_cmd(sc, IWI_CMD_SET_QOS_CAP, buf, frm - buf, 1); 2093 if (error != 0) 2094 return error; 2095 } 2096 if (ic->ic_flags & IEEE80211_F_RSNON) { 2097 /* tell firmware to add WPA/RSN IE to (re)assoc request */ 2098 if (ni->ni_rsnprotos == IEEE80211_PROTO_RSN) 2099 frm = ieee80211_add_rsn(buf, ic, ni); 2100 else 2101 frm = ieee80211_add_wpa(buf, ic, ni); 2102 DPRINTF(("Setting RSN IE length %d\n", frm - buf)); 2103 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, buf, frm - buf, 1); 2104 if (error != 0) 2105 return error; 2106 } 2107 2108 bzero(&assoc, sizeof assoc); 2109 #ifndef IEEE80211_STA_ONLY 2110 if (ic->ic_flags & IEEE80211_F_SIBSS) 2111 assoc.type = IWI_ASSOC_SIBSS; 2112 else 2113 #endif 2114 assoc.type = IWI_ASSOC_ASSOCIATE; 2115 assoc.policy = 0; 2116 if (ic->ic_flags & IEEE80211_F_RSNON) 2117 assoc.policy |= htole16(IWI_ASSOC_POLICY_RSN); 2118 if (ic->ic_flags & IEEE80211_F_QOS) 2119 assoc.policy |= htole16(IWI_ASSOC_POLICY_QOS); 2120 if (ic->ic_curmode == IEEE80211_MODE_11A) 2121 assoc.mode = IWI_MODE_11A; 2122 else if (ic->ic_curmode == IEEE80211_MODE_11B) 2123 assoc.mode = IWI_MODE_11B; 2124 else /* assume 802.11b/g */ 2125 assoc.mode = IWI_MODE_11G; 2126 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2127 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2128 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2129 assoc.plen = IWI_ASSOC_SHPREAMBLE; 2130 bcopy(ni->ni_tstamp, assoc.tstamp, 8); 2131 capinfo = IEEE80211_CAPINFO_ESS; 2132 if (ic->ic_flags & IEEE80211_F_WEPON) 2133 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2134 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2135 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2136 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2137 if (ic->ic_caps & IEEE80211_C_SHSLOT) 2138 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2139 assoc.capinfo = htole16(capinfo); 2140 2141 assoc.lintval = htole16(ic->ic_lintval); 2142 assoc.intval = htole16(ni->ni_intval); 2143 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2144 #ifndef IEEE80211_STA_ONLY 2145 if (ic->ic_opmode == IEEE80211_M_IBSS) 2146 IEEE80211_ADDR_COPY(assoc.dst, etherbroadcastaddr); 2147 else 2148 #endif 2149 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2150 2151 DPRINTF(("Trying to associate to %s channel %u auth %u\n", 2152 ether_sprintf(assoc.bssid), assoc.chan, assoc.auth)); 2153 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2154 } 2155 2156 int 2157 iwi_init(struct ifnet *ifp) 2158 { 2159 struct iwi_softc *sc = ifp->if_softc; 2160 struct ieee80211com *ic = &sc->sc_ic; 2161 struct iwi_firmware_hdr *hdr; 2162 const char *name, *fw; 2163 u_char *data; 2164 size_t size; 2165 int i, ac, error; 2166 2167 iwi_stop(ifp, 0); 2168 2169 if ((error = iwi_reset(sc)) != 0) { 2170 printf("%s: could not reset adapter\n", sc->sc_dev.dv_xname); 2171 goto fail1; 2172 } 2173 2174 switch (ic->ic_opmode) { 2175 case IEEE80211_M_STA: 2176 name = "iwi-bss"; 2177 break; 2178 #ifndef IEEE80211_STA_ONLY 2179 case IEEE80211_M_IBSS: 2180 case IEEE80211_M_AHDEMO: 2181 name = "iwi-ibss"; 2182 break; 2183 #endif 2184 case IEEE80211_M_MONITOR: 2185 name = "iwi-monitor"; 2186 break; 2187 default: 2188 /* should not get there */ 2189 error = EINVAL; 2190 goto fail1; 2191 } 2192 2193 if ((error = loadfirmware(name, &data, &size)) != 0) { 2194 printf("%s: error %d, could not read firmware %s\n", 2195 sc->sc_dev.dv_xname, error, name); 2196 goto fail1; 2197 } 2198 if (size < sizeof (struct iwi_firmware_hdr)) { 2199 printf("%s: firmware image too short: %zu bytes\n", 2200 sc->sc_dev.dv_xname, size); 2201 error = EINVAL; 2202 goto fail2; 2203 } 2204 hdr = (struct iwi_firmware_hdr *)data; 2205 2206 if (hdr->vermaj < 3 || hdr->bootsz == 0 || hdr->ucodesz == 0 || 2207 hdr->mainsz == 0) { 2208 printf("%s: firmware image too old (need at least 3.0)\n", 2209 sc->sc_dev.dv_xname); 2210 error = EINVAL; 2211 goto fail2; 2212 } 2213 2214 if (size < sizeof (struct iwi_firmware_hdr) + letoh32(hdr->bootsz) + 2215 letoh32(hdr->ucodesz) + letoh32(hdr->mainsz)) { 2216 printf("%s: firmware image too short: %zu bytes\n", 2217 sc->sc_dev.dv_xname, size); 2218 error = EINVAL; 2219 goto fail2; 2220 } 2221 2222 fw = (const char *)data + sizeof (struct iwi_firmware_hdr); 2223 if ((error = iwi_load_firmware(sc, fw, letoh32(hdr->bootsz))) != 0) { 2224 printf("%s: could not load boot firmware\n", 2225 sc->sc_dev.dv_xname); 2226 goto fail2; 2227 } 2228 2229 fw = (const char *)data + sizeof (struct iwi_firmware_hdr) + 2230 letoh32(hdr->bootsz); 2231 if ((error = iwi_load_ucode(sc, fw, letoh32(hdr->ucodesz))) != 0) { 2232 printf("%s: could not load microcode\n", sc->sc_dev.dv_xname); 2233 goto fail2; 2234 } 2235 2236 iwi_stop_master(sc); 2237 2238 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.map->dm_segs[0].ds_addr); 2239 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, IWI_CMD_RING_COUNT); 2240 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2241 2242 for (ac = 0; ac < EDCA_NUM_AC; ac++) { 2243 CSR_WRITE_4(sc, IWI_CSR_TX_BASE(ac), 2244 sc->txq[ac].map->dm_segs[0].ds_addr); 2245 CSR_WRITE_4(sc, IWI_CSR_TX_SIZE(ac), IWI_TX_RING_COUNT); 2246 CSR_WRITE_4(sc, IWI_CSR_TX_WIDX(ac), sc->txq[ac].cur); 2247 } 2248 2249 for (i = 0; i < IWI_RX_RING_COUNT; i++) { 2250 struct iwi_rx_data *data = &sc->rxq.data[i]; 2251 CSR_WRITE_4(sc, data->reg, data->map->dm_segs[0].ds_addr); 2252 } 2253 2254 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, IWI_RX_RING_COUNT - 1); 2255 2256 fw = (const char *)data + sizeof (struct iwi_firmware_hdr) + 2257 letoh32(hdr->bootsz) + letoh32(hdr->ucodesz); 2258 if ((error = iwi_load_firmware(sc, fw, letoh32(hdr->mainsz))) != 0) { 2259 printf("%s: could not load main firmware\n", 2260 sc->sc_dev.dv_xname); 2261 goto fail2; 2262 } 2263 2264 free(data, M_DEVBUF, size); 2265 2266 if ((error = iwi_config(sc)) != 0) { 2267 printf("%s: device configuration failed\n", 2268 sc->sc_dev.dv_xname); 2269 goto fail1; 2270 } 2271 2272 ifq_clr_oactive(&ifp->if_snd); 2273 ifp->if_flags |= IFF_RUNNING; 2274 2275 if (ic->ic_opmode != IEEE80211_M_MONITOR) 2276 ieee80211_begin_scan(ifp); 2277 else 2278 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2279 2280 return 0; 2281 2282 fail2: free(data, M_DEVBUF, size); 2283 fail1: iwi_stop(ifp, 0); 2284 return error; 2285 } 2286 2287 void 2288 iwi_stop(struct ifnet *ifp, int disable) 2289 { 2290 struct iwi_softc *sc = ifp->if_softc; 2291 struct ieee80211com *ic = &sc->sc_ic; 2292 int ac; 2293 2294 sc->sc_tx_timer = 0; 2295 ifp->if_timer = 0; 2296 ifp->if_flags &= ~IFF_RUNNING; 2297 ifq_clr_oactive(&ifp->if_snd); 2298 2299 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2300 2301 iwi_stop_master(sc); 2302 2303 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2304 2305 /* reset rings */ 2306 iwi_reset_cmd_ring(sc, &sc->cmdq); 2307 for (ac = 0; ac < EDCA_NUM_AC; ac++) 2308 iwi_reset_tx_ring(sc, &sc->txq[ac]); 2309 iwi_reset_rx_ring(sc, &sc->rxq); 2310 } 2311 2312 struct cfdriver iwi_cd = { 2313 NULL, "iwi", DV_IFNET 2314 }; 2315