1 /* $NetBSD: if_iwi.c,v 1.68 2007/12/09 20:28:09 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2004, 2005 5 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice unmodified, this list of conditions, and the following 12 * disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <sys/cdefs.h> 31 __KERNEL_RCSID(0, "$NetBSD: if_iwi.c,v 1.68 2007/12/09 20:28:09 jmcneill Exp $"); 32 33 /*- 34 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38 #include "bpfilter.h" 39 40 #include <sys/param.h> 41 #include <sys/sockio.h> 42 #include <sys/sysctl.h> 43 #include <sys/mbuf.h> 44 #include <sys/kernel.h> 45 #include <sys/socket.h> 46 #include <sys/systm.h> 47 #include <sys/malloc.h> 48 #include <sys/conf.h> 49 #include <sys/kauth.h> 50 51 #include <sys/bus.h> 52 #include <machine/endian.h> 53 #include <sys/intr.h> 54 55 #include <dev/firmload.h> 56 57 #include <dev/pci/pcireg.h> 58 #include <dev/pci/pcivar.h> 59 #include <dev/pci/pcidevs.h> 60 61 #if NBPFILTER > 0 62 #include <net/bpf.h> 63 #endif 64 #include <net/if.h> 65 #include <net/if_arp.h> 66 #include <net/if_dl.h> 67 #include <net/if_ether.h> 68 #include <net/if_media.h> 69 #include <net/if_types.h> 70 71 #include <net80211/ieee80211_var.h> 72 #include <net80211/ieee80211_radiotap.h> 73 74 #include <netinet/in.h> 75 #include <netinet/in_systm.h> 76 #include <netinet/in_var.h> 77 #include <netinet/ip.h> 78 79 #include <crypto/arc4/arc4.h> 80 81 #include <dev/pci/if_iwireg.h> 82 #include <dev/pci/if_iwivar.h> 83 84 #ifdef IWI_DEBUG 85 #define DPRINTF(x) if (iwi_debug > 0) printf x 86 #define DPRINTFN(n, x) if (iwi_debug >= (n)) printf x 87 int iwi_debug = 4; 88 #else 89 #define DPRINTF(x) 90 #define DPRINTFN(n, x) 91 #endif 92 93 static int iwi_match(device_t, struct cfdata *, void *); 94 static void iwi_attach(device_t, device_t, void *); 95 static int iwi_detach(device_t, int); 96 97 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 98 int); 99 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 100 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 101 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 102 int, bus_addr_t, bus_size_t); 103 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 104 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 105 static struct mbuf * 106 iwi_alloc_rx_buf(struct iwi_softc *sc); 107 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 108 int); 109 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 110 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 111 112 static struct ieee80211_node *iwi_node_alloc(struct ieee80211_node_table *); 113 static void iwi_node_free(struct ieee80211_node *); 114 115 static int iwi_cvtrate(int); 116 static int iwi_media_change(struct ifnet *); 117 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 118 static int iwi_wme_update(struct ieee80211com *); 119 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 120 static int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 121 static void iwi_fix_channel(struct ieee80211com *, struct mbuf *); 122 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 123 struct iwi_frame *); 124 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *); 125 static void iwi_cmd_intr(struct iwi_softc *); 126 static void iwi_rx_intr(struct iwi_softc *); 127 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *); 128 static int iwi_intr(void *); 129 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t, int); 130 static void iwi_write_ibssnode(struct iwi_softc *, const struct iwi_node *); 131 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *, 132 int); 133 static void iwi_start(struct ifnet *); 134 static void iwi_watchdog(struct ifnet *); 135 136 static int iwi_alloc_unr(struct iwi_softc *); 137 static void iwi_free_unr(struct iwi_softc *, int); 138 139 static int iwi_get_table0(struct iwi_softc *, uint32_t *); 140 141 static int iwi_ioctl(struct ifnet *, u_long, void *); 142 static void iwi_stop_master(struct iwi_softc *); 143 static int iwi_reset(struct iwi_softc *); 144 static int iwi_load_ucode(struct iwi_softc *, void *, int); 145 static int iwi_load_firmware(struct iwi_softc *, void *, int); 146 static int iwi_cache_firmware(struct iwi_softc *); 147 static void iwi_free_firmware(struct iwi_softc *); 148 static int iwi_config(struct iwi_softc *); 149 static int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 150 static int iwi_scan(struct iwi_softc *); 151 static int iwi_auth_and_assoc(struct iwi_softc *); 152 static int iwi_init(struct ifnet *); 153 static void iwi_stop(struct ifnet *, int); 154 static int iwi_getrfkill(struct iwi_softc *); 155 static void iwi_led_set(struct iwi_softc *, uint32_t, int); 156 static void iwi_sysctlattach(struct iwi_softc *); 157 158 /* 159 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 160 */ 161 static const struct ieee80211_rateset iwi_rateset_11a = 162 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 163 164 static const struct ieee80211_rateset iwi_rateset_11b = 165 { 4, { 2, 4, 11, 22 } }; 166 167 static const struct ieee80211_rateset iwi_rateset_11g = 168 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 169 170 static inline uint8_t 171 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 172 { 173 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 174 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 175 } 176 177 static inline uint32_t 178 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 179 { 180 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 181 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 182 } 183 184 CFATTACH_DECL_NEW(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 185 iwi_detach, NULL); 186 187 static int 188 iwi_match(device_t parent, struct cfdata *match, void *aux) 189 { 190 struct pci_attach_args *pa = aux; 191 192 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 193 return 0; 194 195 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 196 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2225BG || 197 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 198 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) 199 return 1; 200 201 return 0; 202 } 203 204 static bool 205 iwi_pci_resume(device_t dv) 206 { 207 struct iwi_softc *sc = device_private(dv); 208 209 pci_disable_retry(sc->sc_pct, sc->sc_pcitag); 210 211 return true; 212 } 213 214 /* Base Address Register */ 215 #define IWI_PCI_BAR0 0x10 216 217 static void 218 iwi_attach(device_t parent, device_t self, void *aux) 219 { 220 struct iwi_softc *sc = device_private(self); 221 struct ieee80211com *ic = &sc->sc_ic; 222 struct ifnet *ifp = &sc->sc_if; 223 struct pci_attach_args *pa = aux; 224 const char *intrstr; 225 char devinfo[256]; 226 bus_space_tag_t memt; 227 bus_space_handle_t memh; 228 pci_intr_handle_t ih; 229 pcireg_t data; 230 uint16_t val; 231 int error, revision, i; 232 233 sc->sc_dev = self; 234 sc->sc_pct = pa->pa_pc; 235 sc->sc_pcitag = pa->pa_tag; 236 237 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 238 revision = PCI_REVISION(pa->pa_class); 239 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 240 241 pci_disable_retry(sc->sc_pct, sc->sc_pcitag); 242 243 /* clear unit numbers allocated to IBSS */ 244 sc->sc_unr = 0; 245 246 /* power up chip */ 247 if ((error = pci_activate(pa->pa_pc, pa->pa_tag, sc, 248 NULL)) && error != EOPNOTSUPP) { 249 aprint_error_dev(self, "cannot activate %d\n", error); 250 return; 251 } 252 253 /* enable bus-mastering */ 254 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 255 data |= PCI_COMMAND_MASTER_ENABLE; 256 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 257 258 /* map the register window */ 259 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 260 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 261 if (error != 0) { 262 aprint_error_dev(self, "could not map memory space\n"); 263 return; 264 } 265 266 sc->sc_st = memt; 267 sc->sc_sh = memh; 268 sc->sc_dmat = pa->pa_dmat; 269 270 /* disable interrupts */ 271 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 272 273 if (pci_intr_map(pa, &ih) != 0) { 274 aprint_error_dev(self, "could not map interrupt\n"); 275 return; 276 } 277 278 intrstr = pci_intr_string(sc->sc_pct, ih); 279 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 280 if (sc->sc_ih == NULL) { 281 aprint_error_dev(self, "could not establish interrupt"); 282 if (intrstr != NULL) 283 aprint_error(" at %s", intrstr); 284 aprint_error("\n"); 285 return; 286 } 287 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 288 289 if (iwi_reset(sc) != 0) { 290 aprint_error_dev(self, "could not reset adapter\n"); 291 return; 292 } 293 294 /* 295 * Allocate rings. 296 */ 297 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 298 aprint_error_dev(self, "could not allocate command ring\n"); 299 goto fail; 300 } 301 302 error = iwi_alloc_tx_ring(sc, &sc->txq[0], IWI_TX_RING_COUNT, 303 IWI_CSR_TX1_RIDX, IWI_CSR_TX1_WIDX); 304 if (error != 0) { 305 aprint_error_dev(self, "could not allocate Tx ring 1\n"); 306 goto fail; 307 } 308 309 error = iwi_alloc_tx_ring(sc, &sc->txq[1], IWI_TX_RING_COUNT, 310 IWI_CSR_TX2_RIDX, IWI_CSR_TX2_WIDX); 311 if (error != 0) { 312 aprint_error_dev(self, "could not allocate Tx ring 2\n"); 313 goto fail; 314 } 315 316 error = iwi_alloc_tx_ring(sc, &sc->txq[2], IWI_TX_RING_COUNT, 317 IWI_CSR_TX3_RIDX, IWI_CSR_TX3_WIDX); 318 if (error != 0) { 319 aprint_error_dev(self, "could not allocate Tx ring 3\n"); 320 goto fail; 321 } 322 323 error = iwi_alloc_tx_ring(sc, &sc->txq[3], IWI_TX_RING_COUNT, 324 IWI_CSR_TX4_RIDX, IWI_CSR_TX4_WIDX); 325 if (error != 0) { 326 aprint_error_dev(self, "could not allocate Tx ring 4\n"); 327 goto fail; 328 } 329 330 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 331 aprint_error_dev(self, "could not allocate Rx ring\n"); 332 goto fail; 333 } 334 335 ic->ic_ifp = ifp; 336 ic->ic_wme.wme_update = iwi_wme_update; 337 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 338 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 339 ic->ic_state = IEEE80211_S_INIT; 340 341 sc->sc_fwname = "iwi-bss.fw"; 342 343 /* set device capabilities */ 344 ic->ic_caps = 345 IEEE80211_C_IBSS | /* IBSS mode supported */ 346 IEEE80211_C_MONITOR | /* monitor mode supported */ 347 IEEE80211_C_TXPMGT | /* tx power management */ 348 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 349 IEEE80211_C_SHSLOT | /* short slot time supported */ 350 IEEE80211_C_WPA | /* 802.11i */ 351 IEEE80211_C_WME; /* 802.11e */ 352 353 /* read MAC address from EEPROM */ 354 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 355 ic->ic_myaddr[0] = val & 0xff; 356 ic->ic_myaddr[1] = val >> 8; 357 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 358 ic->ic_myaddr[2] = val & 0xff; 359 ic->ic_myaddr[3] = val >> 8; 360 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 361 ic->ic_myaddr[4] = val & 0xff; 362 ic->ic_myaddr[5] = val >> 8; 363 364 aprint_verbose_dev(self, "802.11 address %s\n", 365 ether_sprintf(ic->ic_myaddr)); 366 367 /* read the NIC type from EEPROM */ 368 val = iwi_read_prom_word(sc, IWI_EEPROM_NIC_TYPE); 369 sc->nictype = val & 0xff; 370 371 DPRINTF(("%s: NIC type %d\n", device_xname(self), sc->nictype)); 372 373 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 374 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) { 375 /* set supported .11a rates (2915ABG only) */ 376 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 377 378 /* set supported .11a channels */ 379 for (i = 36; i <= 64; i += 4) { 380 ic->ic_channels[i].ic_freq = 381 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 382 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 383 } 384 for (i = 149; i <= 165; i += 4) { 385 ic->ic_channels[i].ic_freq = 386 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 387 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 388 } 389 } 390 391 /* set supported .11b and .11g rates */ 392 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 393 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 394 395 /* set supported .11b and .11g channels (1 through 14) */ 396 for (i = 1; i <= 14; i++) { 397 ic->ic_channels[i].ic_freq = 398 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 399 ic->ic_channels[i].ic_flags = 400 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 401 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 402 } 403 404 ifp->if_softc = sc; 405 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 406 ifp->if_init = iwi_init; 407 ifp->if_stop = iwi_stop; 408 ifp->if_ioctl = iwi_ioctl; 409 ifp->if_start = iwi_start; 410 ifp->if_watchdog = iwi_watchdog; 411 IFQ_SET_READY(&ifp->if_snd); 412 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 413 414 if_attach(ifp); 415 ieee80211_ifattach(ic); 416 /* override default methods */ 417 ic->ic_node_alloc = iwi_node_alloc; 418 sc->sc_node_free = ic->ic_node_free; 419 ic->ic_node_free = iwi_node_free; 420 /* override state transition machine */ 421 sc->sc_newstate = ic->ic_newstate; 422 ic->ic_newstate = iwi_newstate; 423 ieee80211_media_init(ic, iwi_media_change, iwi_media_status); 424 425 #if NBPFILTER > 0 426 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 427 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 428 429 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 430 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 431 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 432 433 sc->sc_txtap_len = sizeof sc->sc_txtapu; 434 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 435 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 436 #endif 437 438 iwi_sysctlattach(sc); 439 440 if (!pmf_device_register(self, NULL, iwi_pci_resume)) 441 aprint_error_dev(self, "couldn't establish power handler\n"); 442 else 443 pmf_class_network_register(self, ifp); 444 445 ieee80211_announce(ic); 446 447 return; 448 449 fail: iwi_detach(self, 0); 450 } 451 452 static int 453 iwi_detach(device_t self, int flags) 454 { 455 struct iwi_softc *sc = device_private(self); 456 struct ifnet *ifp = &sc->sc_if; 457 458 pmf_device_deregister(self); 459 460 if (ifp != NULL) 461 iwi_stop(ifp, 1); 462 463 iwi_free_firmware(sc); 464 465 ieee80211_ifdetach(&sc->sc_ic); 466 if (ifp != NULL) 467 if_detach(ifp); 468 469 iwi_free_cmd_ring(sc, &sc->cmdq); 470 iwi_free_tx_ring(sc, &sc->txq[0]); 471 iwi_free_tx_ring(sc, &sc->txq[1]); 472 iwi_free_tx_ring(sc, &sc->txq[2]); 473 iwi_free_tx_ring(sc, &sc->txq[3]); 474 iwi_free_rx_ring(sc, &sc->rxq); 475 476 if (sc->sc_ih != NULL) { 477 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 478 sc->sc_ih = NULL; 479 } 480 481 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 482 483 return 0; 484 } 485 486 static int 487 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 488 int count) 489 { 490 int error, nsegs; 491 492 ring->count = count; 493 ring->queued = 0; 494 ring->cur = ring->next = 0; 495 496 /* 497 * Allocate and map command ring 498 */ 499 error = bus_dmamap_create(sc->sc_dmat, 500 IWI_CMD_DESC_SIZE * count, 1, 501 IWI_CMD_DESC_SIZE * count, 0, 502 BUS_DMA_NOWAIT, &ring->desc_map); 503 if (error != 0) { 504 aprint_error_dev(sc->sc_dev, 505 "could not create command ring DMA map\n"); 506 goto fail; 507 } 508 509 error = bus_dmamem_alloc(sc->sc_dmat, 510 IWI_CMD_DESC_SIZE * count, PAGE_SIZE, 0, 511 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 512 if (error != 0) { 513 aprint_error_dev(sc->sc_dev, 514 "could not allocate command ring DMA memory\n"); 515 goto fail; 516 } 517 518 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 519 IWI_CMD_DESC_SIZE * count, 520 (void **)&sc->cmdq.desc, BUS_DMA_NOWAIT); 521 if (error != 0) { 522 aprint_error_dev(sc->sc_dev, 523 "could not map command ring DMA memory\n"); 524 goto fail; 525 } 526 527 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 528 IWI_CMD_DESC_SIZE * count, NULL, 529 BUS_DMA_NOWAIT); 530 if (error != 0) { 531 aprint_error_dev(sc->sc_dev, 532 "could not load command ring DMA map\n"); 533 goto fail; 534 } 535 536 memset(sc->cmdq.desc, 0, 537 IWI_CMD_DESC_SIZE * count); 538 539 return 0; 540 541 fail: iwi_free_cmd_ring(sc, ring); 542 return error; 543 } 544 545 static void 546 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 547 { 548 int i; 549 550 for (i = ring->next; i != ring->cur;) { 551 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 552 i * IWI_CMD_DESC_SIZE, IWI_CMD_DESC_SIZE, 553 BUS_DMASYNC_POSTWRITE); 554 555 wakeup(&ring->desc[i]); 556 i = (i + 1) % ring->count; 557 } 558 559 ring->queued = 0; 560 ring->cur = ring->next = 0; 561 } 562 563 static void 564 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 565 { 566 if (ring->desc_map != NULL) { 567 if (ring->desc != NULL) { 568 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 569 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 570 IWI_CMD_DESC_SIZE * ring->count); 571 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 572 } 573 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 574 } 575 } 576 577 static int 578 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 579 int count, bus_size_t csr_ridx, bus_size_t csr_widx) 580 { 581 int i, error, nsegs; 582 583 ring->count = count; 584 ring->queued = 0; 585 ring->cur = ring->next = 0; 586 ring->csr_ridx = csr_ridx; 587 ring->csr_widx = csr_widx; 588 589 /* 590 * Allocate and map Tx ring 591 */ 592 error = bus_dmamap_create(sc->sc_dmat, 593 IWI_TX_DESC_SIZE * count, 1, 594 IWI_TX_DESC_SIZE * count, 0, BUS_DMA_NOWAIT, 595 &ring->desc_map); 596 if (error != 0) { 597 aprint_error_dev(sc->sc_dev, 598 "could not create tx ring DMA map\n"); 599 goto fail; 600 } 601 602 error = bus_dmamem_alloc(sc->sc_dmat, 603 IWI_TX_DESC_SIZE * count, PAGE_SIZE, 0, 604 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 605 if (error != 0) { 606 aprint_error_dev(sc->sc_dev, 607 "could not allocate tx ring DMA memory\n"); 608 goto fail; 609 } 610 611 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 612 IWI_TX_DESC_SIZE * count, 613 (void **)&ring->desc, BUS_DMA_NOWAIT); 614 if (error != 0) { 615 aprint_error_dev(sc->sc_dev, 616 "could not map tx ring DMA memory\n"); 617 goto fail; 618 } 619 620 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 621 IWI_TX_DESC_SIZE * count, NULL, 622 BUS_DMA_NOWAIT); 623 if (error != 0) { 624 aprint_error_dev(sc->sc_dev, 625 "could not load tx ring DMA map\n"); 626 goto fail; 627 } 628 629 memset(ring->desc, 0, IWI_TX_DESC_SIZE * count); 630 631 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 632 M_NOWAIT | M_ZERO); 633 if (ring->data == NULL) { 634 aprint_error_dev(sc->sc_dev, "could not allocate soft data\n"); 635 error = ENOMEM; 636 goto fail; 637 } 638 639 /* 640 * Allocate Tx buffers DMA maps 641 */ 642 for (i = 0; i < count; i++) { 643 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 644 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 645 if (error != 0) { 646 aprint_error_dev(sc->sc_dev, 647 "could not create tx buf DMA map"); 648 goto fail; 649 } 650 } 651 return 0; 652 653 fail: iwi_free_tx_ring(sc, ring); 654 return error; 655 } 656 657 static void 658 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 659 { 660 struct iwi_tx_data *data; 661 int i; 662 663 for (i = 0; i < ring->count; i++) { 664 data = &ring->data[i]; 665 666 if (data->m != NULL) { 667 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 668 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 669 bus_dmamap_unload(sc->sc_dmat, data->map); 670 m_freem(data->m); 671 data->m = NULL; 672 } 673 674 if (data->ni != NULL) { 675 ieee80211_free_node(data->ni); 676 data->ni = NULL; 677 } 678 } 679 680 ring->queued = 0; 681 ring->cur = ring->next = 0; 682 } 683 684 static void 685 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 686 { 687 int i; 688 689 if (ring->desc_map != NULL) { 690 if (ring->desc != NULL) { 691 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 692 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 693 IWI_TX_DESC_SIZE * ring->count); 694 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 695 } 696 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 697 } 698 699 for (i = 0; i < ring->count; i++) { 700 if (ring->data[i].m != NULL) { 701 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 702 m_freem(ring->data[i].m); 703 } 704 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 705 } 706 } 707 708 static int 709 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 710 { 711 int i, error; 712 713 ring->count = count; 714 ring->cur = 0; 715 716 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 717 M_NOWAIT | M_ZERO); 718 if (ring->data == NULL) { 719 aprint_error_dev(sc->sc_dev, "could not allocate soft data\n"); 720 error = ENOMEM; 721 goto fail; 722 } 723 724 /* 725 * Allocate and map Rx buffers 726 */ 727 for (i = 0; i < count; i++) { 728 729 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 730 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &ring->data[i].map); 731 if (error != 0) { 732 aprint_error_dev(sc->sc_dev, 733 "could not create rx buf DMA map"); 734 goto fail; 735 } 736 737 if ((ring->data[i].m = iwi_alloc_rx_buf(sc)) == NULL) { 738 error = ENOMEM; 739 goto fail; 740 } 741 742 error = bus_dmamap_load_mbuf(sc->sc_dmat, ring->data[i].map, 743 ring->data[i].m, BUS_DMA_READ | BUS_DMA_NOWAIT); 744 if (error != 0) { 745 aprint_error_dev(sc->sc_dev, 746 "could not load rx buffer DMA map\n"); 747 goto fail; 748 } 749 750 bus_dmamap_sync(sc->sc_dmat, ring->data[i].map, 0, 751 ring->data[i].map->dm_mapsize, BUS_DMASYNC_PREREAD); 752 } 753 754 return 0; 755 756 fail: iwi_free_rx_ring(sc, ring); 757 return error; 758 } 759 760 static void 761 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 762 { 763 ring->cur = 0; 764 } 765 766 static void 767 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 768 { 769 int i; 770 771 for (i = 0; i < ring->count; i++) { 772 if (ring->data[i].m != NULL) { 773 bus_dmamap_unload(sc->sc_dmat, ring->data[i].map); 774 m_freem(ring->data[i].m); 775 } 776 bus_dmamap_destroy(sc->sc_dmat, ring->data[i].map); 777 } 778 } 779 780 static struct ieee80211_node * 781 iwi_node_alloc(struct ieee80211_node_table *nt) 782 { 783 struct iwi_node *in; 784 785 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 786 if (in == NULL) 787 return NULL; 788 789 in->in_station = -1; 790 791 return &in->in_node; 792 } 793 794 static int 795 iwi_alloc_unr(struct iwi_softc *sc) 796 { 797 int i; 798 799 for (i = 0; i < IWI_MAX_IBSSNODE - 1; i++) 800 if ((sc->sc_unr & (1 << i)) == 0) { 801 sc->sc_unr |= 1 << i; 802 return i; 803 } 804 805 return -1; 806 } 807 808 static void 809 iwi_free_unr(struct iwi_softc *sc, int r) 810 { 811 812 sc->sc_unr &= 1 << r; 813 } 814 815 static void 816 iwi_node_free(struct ieee80211_node *ni) 817 { 818 struct ieee80211com *ic = ni->ni_ic; 819 struct iwi_softc *sc = ic->ic_ifp->if_softc; 820 struct iwi_node *in = (struct iwi_node *)ni; 821 822 if (in->in_station != -1) 823 iwi_free_unr(sc, in->in_station); 824 825 sc->sc_node_free(ni); 826 } 827 828 static int 829 iwi_media_change(struct ifnet *ifp) 830 { 831 int error; 832 833 error = ieee80211_media_change(ifp); 834 if (error != ENETRESET) 835 return error; 836 837 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 838 iwi_init(ifp); 839 840 return 0; 841 } 842 843 /* 844 * Convert h/w rate code to IEEE rate code. 845 */ 846 static int 847 iwi_cvtrate(int iwirate) 848 { 849 switch (iwirate) { 850 case IWI_RATE_DS1: return 2; 851 case IWI_RATE_DS2: return 4; 852 case IWI_RATE_DS5: return 11; 853 case IWI_RATE_DS11: return 22; 854 case IWI_RATE_OFDM6: return 12; 855 case IWI_RATE_OFDM9: return 18; 856 case IWI_RATE_OFDM12: return 24; 857 case IWI_RATE_OFDM18: return 36; 858 case IWI_RATE_OFDM24: return 48; 859 case IWI_RATE_OFDM36: return 72; 860 case IWI_RATE_OFDM48: return 96; 861 case IWI_RATE_OFDM54: return 108; 862 } 863 return 0; 864 } 865 866 /* 867 * The firmware automatically adapts the transmit speed. We report its current 868 * value here. 869 */ 870 static void 871 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 872 { 873 struct iwi_softc *sc = ifp->if_softc; 874 struct ieee80211com *ic = &sc->sc_ic; 875 int rate; 876 877 imr->ifm_status = IFM_AVALID; 878 imr->ifm_active = IFM_IEEE80211; 879 if (ic->ic_state == IEEE80211_S_RUN) 880 imr->ifm_status |= IFM_ACTIVE; 881 882 /* read current transmission rate from adapter */ 883 rate = iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 884 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 885 886 switch (ic->ic_opmode) { 887 case IEEE80211_M_STA: 888 break; 889 890 case IEEE80211_M_IBSS: 891 imr->ifm_active |= IFM_IEEE80211_ADHOC; 892 break; 893 894 case IEEE80211_M_MONITOR: 895 imr->ifm_active |= IFM_IEEE80211_MONITOR; 896 break; 897 898 case IEEE80211_M_AHDEMO: 899 case IEEE80211_M_HOSTAP: 900 /* should not get there */ 901 break; 902 } 903 } 904 905 static int 906 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 907 { 908 struct iwi_softc *sc = ic->ic_ifp->if_softc; 909 910 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 911 ieee80211_state_name[ic->ic_state], 912 ieee80211_state_name[nstate], sc->flags)); 913 914 switch (nstate) { 915 case IEEE80211_S_SCAN: 916 if (sc->flags & IWI_FLAG_SCANNING) 917 break; 918 919 ieee80211_node_table_reset(&ic->ic_scan); 920 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 921 sc->flags |= IWI_FLAG_SCANNING; 922 /* blink the led while scanning */ 923 iwi_led_set(sc, IWI_LED_ASSOCIATED, 1); 924 iwi_scan(sc); 925 break; 926 927 case IEEE80211_S_AUTH: 928 iwi_auth_and_assoc(sc); 929 break; 930 931 case IEEE80211_S_RUN: 932 if (ic->ic_opmode == IEEE80211_M_IBSS) 933 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 934 else if (ic->ic_opmode == IEEE80211_M_MONITOR) 935 iwi_set_chan(sc, ic->ic_ibss_chan); 936 937 return (*sc->sc_newstate)(ic, nstate, 938 IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 939 940 case IEEE80211_S_ASSOC: 941 iwi_led_set(sc, IWI_LED_ASSOCIATED, 0); 942 break; 943 944 case IEEE80211_S_INIT: 945 sc->flags &= ~IWI_FLAG_SCANNING; 946 return (*sc->sc_newstate)(ic, nstate, arg); 947 } 948 949 ic->ic_state = nstate; 950 return 0; 951 } 952 953 /* 954 * WME parameters coming from IEEE 802.11e specification. These values are 955 * already declared in ieee80211_proto.c, but they are static so they can't 956 * be reused here. 957 */ 958 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 959 { 0, 3, 5, 7, 0, 0, }, /* WME_AC_BE */ 960 { 0, 3, 5, 10, 0, 0, }, /* WME_AC_BK */ 961 { 0, 2, 4, 5, 188, 0, }, /* WME_AC_VI */ 962 { 0, 2, 3, 4, 102, 0, }, /* WME_AC_VO */ 963 }; 964 965 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 966 { 0, 3, 4, 6, 0, 0, }, /* WME_AC_BE */ 967 { 0, 3, 4, 10, 0, 0, }, /* WME_AC_BK */ 968 { 0, 2, 3, 4, 94, 0, }, /* WME_AC_VI */ 969 { 0, 2, 2, 3, 47, 0, }, /* WME_AC_VO */ 970 }; 971 972 static int 973 iwi_wme_update(struct ieee80211com *ic) 974 { 975 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 976 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 977 struct iwi_softc *sc = ic->ic_ifp->if_softc; 978 struct iwi_wme_params wme[3]; 979 const struct wmeParams *wmep; 980 int ac; 981 982 /* 983 * We shall not override firmware default WME values if WME is not 984 * actually enabled. 985 */ 986 if (!(ic->ic_flags & IEEE80211_F_WME)) 987 return 0; 988 989 for (ac = 0; ac < WME_NUM_AC; ac++) { 990 /* set WME values for current operating mode */ 991 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 992 wme[0].aifsn[ac] = wmep->wmep_aifsn; 993 wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 994 wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 995 wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 996 wme[0].acm[ac] = wmep->wmep_acm; 997 998 /* set WME values for CCK modulation */ 999 wmep = &iwi_wme_cck_params[ac]; 1000 wme[1].aifsn[ac] = wmep->wmep_aifsn; 1001 wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1002 wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1003 wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1004 wme[1].acm[ac] = wmep->wmep_acm; 1005 1006 /* set WME values for OFDM modulation */ 1007 wmep = &iwi_wme_ofdm_params[ac]; 1008 wme[2].aifsn[ac] = wmep->wmep_aifsn; 1009 wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1010 wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1011 wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1012 wme[2].acm[ac] = wmep->wmep_acm; 1013 } 1014 1015 DPRINTF(("Setting WME parameters\n")); 1016 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, wme, sizeof wme, 1); 1017 #undef IWI_USEC 1018 #undef IWI_EXP2 1019 } 1020 1021 /* 1022 * Read 16 bits at address 'addr' from the serial EEPROM. 1023 */ 1024 static uint16_t 1025 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1026 { 1027 uint32_t tmp; 1028 uint16_t val; 1029 int n; 1030 1031 /* Clock C once before the first command */ 1032 IWI_EEPROM_CTL(sc, 0); 1033 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1034 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1035 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1036 1037 /* Write start bit (1) */ 1038 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1039 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1040 1041 /* Write READ opcode (10) */ 1042 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1043 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1044 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1045 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1046 1047 /* Write address A7-A0 */ 1048 for (n = 7; n >= 0; n--) { 1049 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1050 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1051 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1052 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1053 } 1054 1055 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1056 1057 /* Read data Q15-Q0 */ 1058 val = 0; 1059 for (n = 15; n >= 0; n--) { 1060 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1061 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1062 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1063 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1064 } 1065 1066 IWI_EEPROM_CTL(sc, 0); 1067 1068 /* Clear Chip Select and clock C */ 1069 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1070 IWI_EEPROM_CTL(sc, 0); 1071 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1072 1073 return val; 1074 } 1075 1076 /* 1077 * XXX: Hack to set the current channel to the value advertised in beacons or 1078 * probe responses. Only used during AP detection. 1079 */ 1080 static void 1081 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 1082 { 1083 struct ieee80211_frame *wh; 1084 uint8_t subtype; 1085 uint8_t *frm, *efrm; 1086 1087 wh = mtod(m, struct ieee80211_frame *); 1088 1089 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1090 return; 1091 1092 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1093 1094 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1095 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1096 return; 1097 1098 frm = (uint8_t *)(wh + 1); 1099 efrm = mtod(m, uint8_t *) + m->m_len; 1100 1101 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1102 while (frm < efrm) { 1103 if (*frm == IEEE80211_ELEMID_DSPARMS) 1104 #if IEEE80211_CHAN_MAX < 255 1105 if (frm[2] <= IEEE80211_CHAN_MAX) 1106 #endif 1107 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1108 1109 frm += frm[1] + 2; 1110 } 1111 } 1112 1113 static struct mbuf * 1114 iwi_alloc_rx_buf(struct iwi_softc *sc) 1115 { 1116 struct mbuf *m; 1117 1118 MGETHDR(m, M_DONTWAIT, MT_DATA); 1119 if (m == NULL) { 1120 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 1121 return NULL; 1122 } 1123 1124 MCLGET(m, M_DONTWAIT); 1125 if (!(m->m_flags & M_EXT)) { 1126 aprint_error_dev(sc->sc_dev, 1127 "could not allocate rx mbuf cluster\n"); 1128 m_freem(m); 1129 return NULL; 1130 } 1131 1132 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 1133 return m; 1134 } 1135 1136 static void 1137 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1138 struct iwi_frame *frame) 1139 { 1140 struct ieee80211com *ic = &sc->sc_ic; 1141 struct ifnet *ifp = ic->ic_ifp; 1142 struct mbuf *m, *m_new; 1143 struct ieee80211_frame *wh; 1144 struct ieee80211_node *ni; 1145 int error; 1146 1147 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1148 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1149 1150 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1151 le16toh(frame->len) > MCLBYTES) { 1152 DPRINTF(("%s: bad frame length\n", device_xname(sc->sc_dev))); 1153 ifp->if_ierrors++; 1154 return; 1155 } 1156 1157 /* 1158 * Try to allocate a new mbuf for this ring element and 1159 * load it before processing the current mbuf. If the ring 1160 * element cannot be reloaded, drop the received packet 1161 * and reuse the old mbuf. In the unlikely case that 1162 * the old mbuf can't be reloaded either, explicitly panic. 1163 * 1164 * XXX Reorganize buffer by moving elements from the logical 1165 * end of the ring to the front instead of dropping. 1166 */ 1167 if ((m_new = iwi_alloc_rx_buf(sc)) == NULL) { 1168 ifp->if_ierrors++; 1169 return; 1170 } 1171 1172 bus_dmamap_unload(sc->sc_dmat, data->map); 1173 1174 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m_new, 1175 BUS_DMA_READ | BUS_DMA_NOWAIT); 1176 if (error != 0) { 1177 aprint_error_dev(sc->sc_dev, 1178 "could not load rx buf DMA map\n"); 1179 m_freem(m_new); 1180 ifp->if_ierrors++; 1181 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, 1182 data->m, BUS_DMA_READ | BUS_DMA_NOWAIT); 1183 if (error) 1184 panic("%s: unable to remap rx buf", 1185 device_xname(sc->sc_dev)); 1186 return; 1187 } 1188 1189 /* 1190 * New mbuf successfully loaded, update RX ring and continue 1191 * processing. 1192 */ 1193 m = data->m; 1194 data->m = m_new; 1195 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1196 1197 /* Finalize mbuf */ 1198 m->m_pkthdr.rcvif = ifp; 1199 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1200 sizeof (struct iwi_frame) + le16toh(frame->len); 1201 1202 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1203 1204 if (ic->ic_state == IEEE80211_S_SCAN) 1205 iwi_fix_channel(ic, m); 1206 1207 #if NBPFILTER > 0 1208 if (sc->sc_drvbpf != NULL) { 1209 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1210 1211 tap->wr_flags = 0; 1212 tap->wr_rate = iwi_cvtrate(frame->rate); 1213 tap->wr_chan_freq = 1214 htole16(ic->ic_channels[frame->chan].ic_freq); 1215 tap->wr_chan_flags = 1216 htole16(ic->ic_channels[frame->chan].ic_flags); 1217 tap->wr_antsignal = frame->signal; 1218 tap->wr_antenna = frame->antenna; 1219 1220 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1221 } 1222 #endif 1223 wh = mtod(m, struct ieee80211_frame *); 1224 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1225 1226 /* Send the frame to the upper layer */ 1227 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1228 1229 /* node is no longer needed */ 1230 ieee80211_free_node(ni); 1231 } 1232 1233 static void 1234 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1235 { 1236 struct ieee80211com *ic = &sc->sc_ic; 1237 struct iwi_notif_scan_channel *chan; 1238 struct iwi_notif_scan_complete *scan; 1239 struct iwi_notif_authentication *auth; 1240 struct iwi_notif_association *assoc; 1241 struct iwi_notif_beacon_state *beacon; 1242 1243 switch (notif->type) { 1244 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1245 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1246 1247 DPRINTFN(2, ("Scan of channel %u complete (%u)\n", 1248 ic->ic_channels[chan->nchan].ic_freq, chan->nchan)); 1249 break; 1250 1251 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1252 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1253 1254 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1255 scan->status)); 1256 1257 /* monitor mode uses scan to set the channel ... */ 1258 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1259 sc->flags &= ~IWI_FLAG_SCANNING; 1260 ieee80211_end_scan(ic); 1261 } else 1262 iwi_set_chan(sc, ic->ic_ibss_chan); 1263 break; 1264 1265 case IWI_NOTIF_TYPE_AUTHENTICATION: 1266 auth = (struct iwi_notif_authentication *)(notif + 1); 1267 1268 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1269 1270 switch (auth->state) { 1271 case IWI_AUTH_SUCCESS: 1272 ieee80211_node_authorize(ic->ic_bss); 1273 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1274 break; 1275 1276 case IWI_AUTH_FAIL: 1277 break; 1278 1279 default: 1280 aprint_error_dev(sc->sc_dev, 1281 "unknown authentication state %u\n", auth->state); 1282 } 1283 break; 1284 1285 case IWI_NOTIF_TYPE_ASSOCIATION: 1286 assoc = (struct iwi_notif_association *)(notif + 1); 1287 1288 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1289 assoc->status)); 1290 1291 switch (assoc->state) { 1292 case IWI_AUTH_SUCCESS: 1293 /* re-association, do nothing */ 1294 break; 1295 1296 case IWI_ASSOC_SUCCESS: 1297 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1298 break; 1299 1300 case IWI_ASSOC_FAIL: 1301 ieee80211_begin_scan(ic, 1); 1302 break; 1303 1304 default: 1305 aprint_error_dev(sc->sc_dev, 1306 "unknown association state %u\n", assoc->state); 1307 } 1308 break; 1309 1310 case IWI_NOTIF_TYPE_BEACON: 1311 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1312 1313 if (beacon->state == IWI_BEACON_MISS) { 1314 DPRINTFN(5, ("%s: %u beacon(s) missed\n", 1315 device_xname(sc->sc_dev), le32toh(beacon->number))); 1316 } 1317 break; 1318 1319 case IWI_NOTIF_TYPE_FRAG_LENGTH: 1320 case IWI_NOTIF_TYPE_LINK_QUALITY: 1321 case IWI_NOTIF_TYPE_TGI_TX_KEY: 1322 case IWI_NOTIF_TYPE_CALIBRATION: 1323 case IWI_NOTIF_TYPE_NOISE: 1324 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1325 break; 1326 1327 default: 1328 DPRINTF(("%s: unknown notification type %u flags 0x%x len %d\n", 1329 device_xname(sc->sc_dev), notif->type, notif->flags, 1330 le16toh(notif->len))); 1331 } 1332 } 1333 1334 static void 1335 iwi_cmd_intr(struct iwi_softc *sc) 1336 { 1337 uint32_t hw; 1338 1339 hw = CSR_READ_4(sc, IWI_CSR_CMD_RIDX); 1340 1341 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1342 sc->cmdq.next * IWI_CMD_DESC_SIZE, IWI_CMD_DESC_SIZE, 1343 BUS_DMASYNC_POSTWRITE); 1344 1345 wakeup(&sc->cmdq.desc[sc->cmdq.next]); 1346 1347 sc->cmdq.next = (sc->cmdq.next + 1) % sc->cmdq.count; 1348 1349 if (--sc->cmdq.queued > 0) { 1350 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, (sc->cmdq.next + 1) % sc->cmdq.count); 1351 } 1352 } 1353 1354 static void 1355 iwi_rx_intr(struct iwi_softc *sc) 1356 { 1357 struct iwi_rx_data *data; 1358 struct iwi_hdr *hdr; 1359 uint32_t hw; 1360 1361 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1362 1363 for (; sc->rxq.cur != hw;) { 1364 data = &sc->rxq.data[sc->rxq.cur]; 1365 1366 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1367 data->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1368 1369 hdr = mtod(data->m, struct iwi_hdr *); 1370 1371 switch (hdr->type) { 1372 case IWI_HDR_TYPE_FRAME: 1373 iwi_frame_intr(sc, data, sc->rxq.cur, 1374 (struct iwi_frame *)(hdr + 1)); 1375 break; 1376 1377 case IWI_HDR_TYPE_NOTIF: 1378 iwi_notification_intr(sc, 1379 (struct iwi_notif *)(hdr + 1)); 1380 break; 1381 1382 default: 1383 aprint_error_dev(sc->sc_dev, "unknown hdr type %u\n", 1384 hdr->type); 1385 } 1386 1387 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1388 data->map->dm_mapsize, BUS_DMASYNC_PREREAD); 1389 1390 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1391 1392 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1393 } 1394 1395 /* Tell the firmware what we have processed */ 1396 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1397 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1398 } 1399 1400 static void 1401 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1402 { 1403 struct ifnet *ifp = &sc->sc_if; 1404 struct iwi_tx_data *data; 1405 uint32_t hw; 1406 1407 hw = CSR_READ_4(sc, txq->csr_ridx); 1408 1409 for (; txq->next != hw;) { 1410 data = &txq->data[txq->next]; 1411 1412 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1413 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1414 bus_dmamap_unload(sc->sc_dmat, data->map); 1415 m_freem(data->m); 1416 data->m = NULL; 1417 ieee80211_free_node(data->ni); 1418 data->ni = NULL; 1419 1420 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1421 1422 ifp->if_opackets++; 1423 1424 txq->queued--; 1425 txq->next = (txq->next + 1) % txq->count; 1426 } 1427 1428 sc->sc_tx_timer = 0; 1429 ifp->if_flags &= ~IFF_OACTIVE; 1430 1431 /* Call start() since some buffer descriptors have been released */ 1432 (*ifp->if_start)(ifp); 1433 } 1434 1435 static int 1436 iwi_intr(void *arg) 1437 { 1438 struct iwi_softc *sc = arg; 1439 uint32_t r; 1440 1441 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1442 return 0; 1443 1444 /* Acknowledge interrupts */ 1445 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1446 1447 if (r & IWI_INTR_FATAL_ERROR) { 1448 aprint_error_dev(sc->sc_dev, "fatal error\n"); 1449 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1450 iwi_stop(&sc->sc_if, 1); 1451 return (1); 1452 } 1453 1454 if (r & IWI_INTR_FW_INITED) { 1455 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1456 wakeup(sc); 1457 } 1458 1459 if (r & IWI_INTR_RADIO_OFF) { 1460 DPRINTF(("radio transmitter off\n")); 1461 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1462 iwi_stop(&sc->sc_if, 1); 1463 return (1); 1464 } 1465 1466 if (r & IWI_INTR_CMD_DONE) 1467 iwi_cmd_intr(sc); 1468 1469 if (r & IWI_INTR_TX1_DONE) 1470 iwi_tx_intr(sc, &sc->txq[0]); 1471 1472 if (r & IWI_INTR_TX2_DONE) 1473 iwi_tx_intr(sc, &sc->txq[1]); 1474 1475 if (r & IWI_INTR_TX3_DONE) 1476 iwi_tx_intr(sc, &sc->txq[2]); 1477 1478 if (r & IWI_INTR_TX4_DONE) 1479 iwi_tx_intr(sc, &sc->txq[3]); 1480 1481 if (r & IWI_INTR_RX_DONE) 1482 iwi_rx_intr(sc); 1483 1484 if (r & IWI_INTR_PARITY_ERROR) 1485 aprint_error_dev(sc->sc_dev, "parity error\n"); 1486 1487 return 1; 1488 } 1489 1490 static int 1491 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, 1492 int async) 1493 { 1494 struct iwi_cmd_desc *desc; 1495 1496 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1497 1498 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1499 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1500 desc->type = type; 1501 desc->len = len; 1502 memcpy(desc->data, data, len); 1503 1504 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1505 sc->cmdq.cur * IWI_CMD_DESC_SIZE, 1506 IWI_CMD_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1507 1508 DPRINTFN(2, ("sending command idx=%u type=%u len=%u async=%d\n", 1509 sc->cmdq.cur, type, len, async)); 1510 1511 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1512 1513 if (++sc->cmdq.queued == 1) 1514 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1515 1516 return async ? 0 : tsleep(desc, 0, "iwicmd", hz); 1517 } 1518 1519 static void 1520 iwi_write_ibssnode(struct iwi_softc *sc, const struct iwi_node *in) 1521 { 1522 struct iwi_ibssnode node; 1523 1524 /* write node information into NIC memory */ 1525 memset(&node, 0, sizeof node); 1526 IEEE80211_ADDR_COPY(node.bssid, in->in_node.ni_macaddr); 1527 1528 CSR_WRITE_REGION_1(sc, 1529 IWI_CSR_NODE_BASE + in->in_station * sizeof node, 1530 (uint8_t *)&node, sizeof node); 1531 } 1532 1533 static int 1534 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1535 int ac) 1536 { 1537 struct iwi_softc *sc = ifp->if_softc; 1538 struct ieee80211com *ic = &sc->sc_ic; 1539 struct iwi_node *in = (struct iwi_node *)ni; 1540 struct ieee80211_frame *wh; 1541 struct ieee80211_key *k; 1542 const struct chanAccParams *cap; 1543 struct iwi_tx_ring *txq = &sc->txq[ac]; 1544 struct iwi_tx_data *data; 1545 struct iwi_tx_desc *desc; 1546 struct mbuf *mnew; 1547 int error, hdrlen, i, noack = 0; 1548 1549 wh = mtod(m0, struct ieee80211_frame *); 1550 1551 if (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) { 1552 hdrlen = sizeof (struct ieee80211_qosframe); 1553 cap = &ic->ic_wme.wme_chanParams; 1554 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1555 } else 1556 hdrlen = sizeof (struct ieee80211_frame); 1557 1558 /* 1559 * This is only used in IBSS mode where the firmware expect an index 1560 * in a h/w table instead of a destination address. 1561 */ 1562 if (ic->ic_opmode == IEEE80211_M_IBSS && in->in_station == -1) { 1563 in->in_station = iwi_alloc_unr(sc); 1564 1565 if (in->in_station == -1) { /* h/w table is full */ 1566 m_freem(m0); 1567 ieee80211_free_node(ni); 1568 ifp->if_oerrors++; 1569 return 0; 1570 } 1571 iwi_write_ibssnode(sc, in); 1572 } 1573 1574 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1575 k = ieee80211_crypto_encap(ic, ni, m0); 1576 if (k == NULL) { 1577 m_freem(m0); 1578 return ENOBUFS; 1579 } 1580 1581 /* packet header may have moved, reset our local pointer */ 1582 wh = mtod(m0, struct ieee80211_frame *); 1583 } 1584 1585 #if NBPFILTER > 0 1586 if (sc->sc_drvbpf != NULL) { 1587 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1588 1589 tap->wt_flags = 0; 1590 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1591 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1592 1593 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1594 } 1595 #endif 1596 1597 data = &txq->data[txq->cur]; 1598 desc = &txq->desc[txq->cur]; 1599 1600 /* save and trim IEEE802.11 header */ 1601 m_copydata(m0, 0, hdrlen, (void *)&desc->wh); 1602 m_adj(m0, hdrlen); 1603 1604 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1605 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1606 if (error != 0 && error != EFBIG) { 1607 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1608 error); 1609 m_freem(m0); 1610 return error; 1611 } 1612 if (error != 0) { 1613 /* too many fragments, linearize */ 1614 1615 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1616 if (mnew == NULL) { 1617 m_freem(m0); 1618 return ENOMEM; 1619 } 1620 1621 M_COPY_PKTHDR(mnew, m0); 1622 1623 /* If the data won't fit in the header, get a cluster */ 1624 if (m0->m_pkthdr.len > MHLEN) { 1625 MCLGET(mnew, M_DONTWAIT); 1626 if (!(mnew->m_flags & M_EXT)) { 1627 m_freem(m0); 1628 m_freem(mnew); 1629 return ENOMEM; 1630 } 1631 } 1632 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1633 m_freem(m0); 1634 mnew->m_len = mnew->m_pkthdr.len; 1635 m0 = mnew; 1636 1637 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1638 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1639 if (error != 0) { 1640 aprint_error_dev(sc->sc_dev, 1641 "could not map mbuf (error %d)\n", error); 1642 m_freem(m0); 1643 return error; 1644 } 1645 } 1646 1647 data->m = m0; 1648 data->ni = ni; 1649 1650 desc->hdr.type = IWI_HDR_TYPE_DATA; 1651 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1652 desc->station = 1653 (ic->ic_opmode == IEEE80211_M_IBSS) ? in->in_station : 0; 1654 desc->cmd = IWI_DATA_CMD_TX; 1655 desc->len = htole16(m0->m_pkthdr.len); 1656 desc->flags = 0; 1657 desc->xflags = 0; 1658 1659 if (!noack && !IEEE80211_IS_MULTICAST(desc->wh.i_addr1)) 1660 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1661 1662 #if 0 1663 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1664 desc->wh.i_fc[1] |= IEEE80211_FC1_WEP; 1665 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1666 } else 1667 #endif 1668 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1669 1670 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1671 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1672 1673 if (desc->wh.i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) 1674 desc->xflags |= IWI_DATA_XFLAG_QOS; 1675 1676 if (ic->ic_curmode == IEEE80211_MODE_11B) 1677 desc->xflags |= IWI_DATA_XFLAG_CCK; 1678 1679 desc->nseg = htole32(data->map->dm_nsegs); 1680 for (i = 0; i < data->map->dm_nsegs; i++) { 1681 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1682 desc->seg_len[i] = htole16(data->map->dm_segs[i].ds_len); 1683 } 1684 1685 bus_dmamap_sync(sc->sc_dmat, txq->desc_map, 1686 txq->cur * IWI_TX_DESC_SIZE, 1687 IWI_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1688 1689 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1690 BUS_DMASYNC_PREWRITE); 1691 1692 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1693 ac, txq->cur, le16toh(desc->len), le32toh(desc->nseg))); 1694 1695 /* Inform firmware about this new packet */ 1696 txq->queued++; 1697 txq->cur = (txq->cur + 1) % txq->count; 1698 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1699 1700 return 0; 1701 } 1702 1703 static void 1704 iwi_start(struct ifnet *ifp) 1705 { 1706 struct iwi_softc *sc = ifp->if_softc; 1707 struct ieee80211com *ic = &sc->sc_ic; 1708 struct mbuf *m0; 1709 struct ether_header *eh; 1710 struct ieee80211_node *ni; 1711 int ac; 1712 1713 if (ic->ic_state != IEEE80211_S_RUN) 1714 return; 1715 1716 for (;;) { 1717 IF_DEQUEUE(&ifp->if_snd, m0); 1718 if (m0 == NULL) 1719 break; 1720 1721 if (m0->m_len < sizeof (struct ether_header) && 1722 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) { 1723 ifp->if_oerrors++; 1724 continue; 1725 } 1726 1727 eh = mtod(m0, struct ether_header *); 1728 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1729 if (ni == NULL) { 1730 m_freem(m0); 1731 ifp->if_oerrors++; 1732 continue; 1733 } 1734 1735 /* classify mbuf so we can find which tx ring to use */ 1736 if (ieee80211_classify(ic, m0, ni) != 0) { 1737 m_freem(m0); 1738 ieee80211_free_node(ni); 1739 ifp->if_oerrors++; 1740 continue; 1741 } 1742 1743 /* no QoS encapsulation for EAPOL frames */ 1744 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1745 M_WME_GETAC(m0) : WME_AC_BE; 1746 1747 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1748 /* there is no place left in this ring */ 1749 IF_PREPEND(&ifp->if_snd, m0); 1750 ifp->if_flags |= IFF_OACTIVE; 1751 break; 1752 } 1753 1754 #if NBPFILTER > 0 1755 if (ifp->if_bpf != NULL) 1756 bpf_mtap(ifp->if_bpf, m0); 1757 #endif 1758 1759 m0 = ieee80211_encap(ic, m0, ni); 1760 if (m0 == NULL) { 1761 ieee80211_free_node(ni); 1762 ifp->if_oerrors++; 1763 continue; 1764 } 1765 1766 #if NBPFILTER > 0 1767 if (ic->ic_rawbpf != NULL) 1768 bpf_mtap(ic->ic_rawbpf, m0); 1769 #endif 1770 1771 if (iwi_tx_start(ifp, m0, ni, ac) != 0) { 1772 ieee80211_free_node(ni); 1773 ifp->if_oerrors++; 1774 break; 1775 } 1776 1777 /* start watchdog timer */ 1778 sc->sc_tx_timer = 5; 1779 ifp->if_timer = 1; 1780 } 1781 } 1782 1783 static void 1784 iwi_watchdog(struct ifnet *ifp) 1785 { 1786 struct iwi_softc *sc = ifp->if_softc; 1787 1788 ifp->if_timer = 0; 1789 1790 if (sc->sc_tx_timer > 0) { 1791 if (--sc->sc_tx_timer == 0) { 1792 aprint_error_dev(sc->sc_dev, "device timeout\n"); 1793 ifp->if_oerrors++; 1794 ifp->if_flags &= ~IFF_UP; 1795 iwi_stop(ifp, 1); 1796 return; 1797 } 1798 ifp->if_timer = 1; 1799 } 1800 1801 ieee80211_watchdog(&sc->sc_ic); 1802 } 1803 1804 static int 1805 iwi_get_table0(struct iwi_softc *sc, uint32_t *tbl) 1806 { 1807 uint32_t size, buf[128]; 1808 1809 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1810 memset(buf, 0, sizeof buf); 1811 return copyout(buf, tbl, sizeof buf); 1812 } 1813 1814 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1815 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1816 1817 return copyout(buf, tbl, sizeof buf); 1818 } 1819 1820 static int 1821 iwi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1822 { 1823 #define IS_RUNNING(ifp) \ 1824 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 1825 1826 struct iwi_softc *sc = ifp->if_softc; 1827 struct ieee80211com *ic = &sc->sc_ic; 1828 struct ifreq *ifr = (struct ifreq *)data; 1829 int s, error = 0; 1830 int val; 1831 1832 s = splnet(); 1833 1834 switch (cmd) { 1835 case SIOCSIFFLAGS: 1836 if (ifp->if_flags & IFF_UP) { 1837 if (!(ifp->if_flags & IFF_RUNNING)) 1838 iwi_init(ifp); 1839 } else { 1840 if (ifp->if_flags & IFF_RUNNING) 1841 iwi_stop(ifp, 1); 1842 } 1843 break; 1844 1845 case SIOCADDMULTI: 1846 case SIOCDELMULTI: 1847 /* XXX no h/w multicast filter? --dyoung */ 1848 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1849 /* setup multicast filter, etc */ 1850 error = 0; 1851 } 1852 break; 1853 1854 case SIOCGTABLE0: 1855 error = iwi_get_table0(sc, (uint32_t *)ifr->ifr_data); 1856 break; 1857 1858 case SIOCGRADIO: 1859 val = !iwi_getrfkill(sc); 1860 error = copyout(&val, (int *)ifr->ifr_data, sizeof val); 1861 break; 1862 1863 case SIOCSIFMEDIA: 1864 if (ifr->ifr_media & IFM_IEEE80211_ADHOC) { 1865 sc->sc_fwname = "iwi-ibss.fw"; 1866 } else if (ifr->ifr_media & IFM_IEEE80211_MONITOR) { 1867 sc->sc_fwname = "iwi-sniffer.fw"; 1868 } else { 1869 sc->sc_fwname = "iwi-bss.fw"; 1870 } 1871 error = iwi_cache_firmware(sc); 1872 if (error) 1873 break; 1874 /* FALLTRHOUGH */ 1875 1876 default: 1877 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1878 1879 if (error == ENETRESET) { 1880 if (IS_RUNNING(ifp) && 1881 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1882 iwi_init(ifp); 1883 error = 0; 1884 } 1885 } 1886 1887 splx(s); 1888 return error; 1889 #undef IS_RUNNING 1890 } 1891 1892 static void 1893 iwi_stop_master(struct iwi_softc *sc) 1894 { 1895 int ntries; 1896 1897 /* Disable interrupts */ 1898 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1899 1900 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1901 for (ntries = 0; ntries < 5; ntries++) { 1902 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1903 break; 1904 DELAY(10); 1905 } 1906 if (ntries == 5) 1907 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 1908 1909 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1910 IWI_RST_PRINCETON_RESET); 1911 1912 sc->flags &= ~IWI_FLAG_FW_INITED; 1913 } 1914 1915 static int 1916 iwi_reset(struct iwi_softc *sc) 1917 { 1918 int i, ntries; 1919 1920 iwi_stop_master(sc); 1921 1922 /* Move adapter to D0 state */ 1923 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1924 IWI_CTL_INIT); 1925 1926 /* Initialize Phase-Locked Level (PLL) */ 1927 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1928 1929 /* Wait for clock stabilization */ 1930 for (ntries = 0; ntries < 1000; ntries++) { 1931 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1932 break; 1933 DELAY(200); 1934 } 1935 if (ntries == 1000) { 1936 aprint_error_dev(sc->sc_dev, 1937 "timeout waiting for clock stabilization\n"); 1938 return ETIMEDOUT; 1939 } 1940 1941 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1942 IWI_RST_SW_RESET); 1943 1944 DELAY(10); 1945 1946 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1947 IWI_CTL_INIT); 1948 1949 /* Clear NIC memory */ 1950 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1951 for (i = 0; i < 0xc000; i++) 1952 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1953 1954 return 0; 1955 } 1956 1957 static int 1958 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1959 { 1960 uint16_t *w; 1961 int ntries, i; 1962 1963 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1964 IWI_RST_STOP_MASTER); 1965 for (ntries = 0; ntries < 5; ntries++) { 1966 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1967 break; 1968 DELAY(10); 1969 } 1970 if (ntries == 5) { 1971 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 1972 return ETIMEDOUT; 1973 } 1974 1975 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1976 DELAY(5000); 1977 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1978 ~IWI_RST_PRINCETON_RESET); 1979 DELAY(5000); 1980 MEM_WRITE_4(sc, 0x3000e0, 0); 1981 DELAY(1000); 1982 MEM_WRITE_4(sc, 0x300004, 1); 1983 DELAY(1000); 1984 MEM_WRITE_4(sc, 0x300004, 0); 1985 DELAY(1000); 1986 MEM_WRITE_1(sc, 0x200000, 0x00); 1987 MEM_WRITE_1(sc, 0x200000, 0x40); 1988 DELAY(1000); 1989 1990 /* Adapter is buggy, we must set the address for each word */ 1991 for (w = uc; size > 0; w++, size -= 2) 1992 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 1993 1994 MEM_WRITE_1(sc, 0x200000, 0x00); 1995 MEM_WRITE_1(sc, 0x200000, 0x80); 1996 1997 /* Wait until we get a response in the uc queue */ 1998 for (ntries = 0; ntries < 100; ntries++) { 1999 if (MEM_READ_1(sc, 0x200000) & 1) 2000 break; 2001 DELAY(100); 2002 } 2003 if (ntries == 100) { 2004 aprint_error_dev(sc->sc_dev, 2005 "timeout waiting for ucode to initialize\n"); 2006 return ETIMEDOUT; 2007 } 2008 2009 /* Empty the uc queue or the firmware will not initialize properly */ 2010 for (i = 0; i < 7; i++) 2011 MEM_READ_4(sc, 0x200004); 2012 2013 MEM_WRITE_1(sc, 0x200000, 0x00); 2014 2015 return 0; 2016 } 2017 2018 /* macro to handle unaligned little endian data in firmware image */ 2019 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2020 static int 2021 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 2022 { 2023 bus_dmamap_t map; 2024 u_char *p, *end; 2025 uint32_t sentinel, ctl, sum; 2026 uint32_t cs, sl, cd, cl; 2027 int ntries, nsegs, error; 2028 int sn; 2029 2030 nsegs = (size + PAGE_SIZE - 1) / PAGE_SIZE; 2031 2032 /* Create a DMA map for the firmware image */ 2033 error = bus_dmamap_create(sc->sc_dmat, size, nsegs, size, 0, 2034 BUS_DMA_NOWAIT, &map); 2035 if (error != 0) { 2036 aprint_error_dev(sc->sc_dev, 2037 "could not create firmware DMA map\n"); 2038 goto fail1; 2039 } 2040 2041 error = bus_dmamap_load(sc->sc_dmat, map, fw, size, NULL, 2042 BUS_DMA_NOWAIT | BUS_DMA_WRITE); 2043 if (error != 0) { 2044 aprint_error_dev(sc->sc_dev, "could not load fw dma map(%d)\n", 2045 error); 2046 goto fail2; 2047 } 2048 2049 /* Make sure the adapter will get up-to-date values */ 2050 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 2051 2052 /* Tell the adapter where the command blocks are stored */ 2053 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2054 2055 /* 2056 * Store command blocks into adapter's internal memory using register 2057 * indirections. The adapter will read the firmware image through DMA 2058 * using information stored in command blocks. 2059 */ 2060 p = fw; 2061 end = p + size; 2062 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2063 2064 sn = 0; 2065 sl = cl = 0; 2066 cs = cd = 0; 2067 while (p < end) { 2068 if (sl == 0) { 2069 cs = map->dm_segs[sn].ds_addr; 2070 sl = map->dm_segs[sn].ds_len; 2071 sn++; 2072 } 2073 if (cl == 0) { 2074 cd = GETLE32(p); p += 4; cs += 4; sl -= 4; 2075 cl = GETLE32(p); p += 4; cs += 4; sl -= 4; 2076 } 2077 while (sl > 0 && cl > 0) { 2078 int len = min(cl, sl); 2079 2080 sl -= len; 2081 cl -= len; 2082 p += len; 2083 2084 while (len > 0) { 2085 int mlen = min(len, IWI_CB_MAXDATALEN); 2086 2087 ctl = IWI_CB_DEFAULT_CTL | mlen; 2088 sum = ctl ^ cs ^ cd; 2089 2090 /* Write a command block */ 2091 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2092 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cs); 2093 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cd); 2094 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2095 2096 cs += mlen; 2097 cd += mlen; 2098 len -= mlen; 2099 } 2100 } 2101 } 2102 2103 /* Write a fictive final command block (sentinel) */ 2104 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2105 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2106 2107 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 2108 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 2109 2110 /* Tell the adapter to start processing command blocks */ 2111 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2112 2113 /* Wait until the adapter has processed all command blocks */ 2114 for (ntries = 0; ntries < 400; ntries++) { 2115 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2116 break; 2117 DELAY(100); 2118 } 2119 if (ntries == 400) { 2120 aprint_error_dev(sc->sc_dev, "timeout processing cb\n"); 2121 error = ETIMEDOUT; 2122 goto fail3; 2123 } 2124 2125 /* We're done with command blocks processing */ 2126 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2127 2128 /* Allow interrupts so we know when the firmware is inited */ 2129 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2130 2131 /* Tell the adapter to initialize the firmware */ 2132 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2133 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 2134 IWI_CTL_ALLOW_STANDBY); 2135 2136 /* Wait at most one second for firmware initialization to complete */ 2137 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 2138 aprint_error_dev(sc->sc_dev, 2139 "timeout waiting for firmware initialization to complete\n"); 2140 goto fail3; 2141 } 2142 2143 fail3: 2144 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 2145 bus_dmamap_unload(sc->sc_dmat, map); 2146 fail2: 2147 bus_dmamap_destroy(sc->sc_dmat, map); 2148 2149 fail1: 2150 return error; 2151 } 2152 2153 /* 2154 * Store firmware into kernel memory so we can download it when we need to, 2155 * e.g when the adapter wakes up from suspend mode. 2156 */ 2157 static int 2158 iwi_cache_firmware(struct iwi_softc *sc) 2159 { 2160 struct iwi_firmware *kfw = &sc->fw; 2161 firmware_handle_t fwh; 2162 const struct iwi_firmware_hdr *hdr; 2163 off_t size; 2164 char *fw; 2165 int error; 2166 2167 iwi_free_firmware(sc); 2168 error = firmware_open("if_iwi", sc->sc_fwname, &fwh); 2169 if (error != 0) { 2170 aprint_error_dev(sc->sc_dev, "firmware_open failed\n"); 2171 goto fail1; 2172 } 2173 2174 size = firmware_get_size(fwh); 2175 if (size < sizeof(struct iwi_firmware_hdr)) { 2176 aprint_error_dev(sc->sc_dev, "image '%s' has no header\n", 2177 sc->sc_fwname); 2178 error = EIO; 2179 goto fail1; 2180 } 2181 2182 sc->sc_blob = firmware_malloc(size); 2183 if (sc->sc_blob == NULL) { 2184 error = ENOMEM; 2185 firmware_close(fwh); 2186 goto fail1; 2187 } 2188 2189 error = firmware_read(fwh, 0, sc->sc_blob, size); 2190 firmware_close(fwh); 2191 if (error != 0) 2192 goto fail2; 2193 2194 2195 hdr = (const struct iwi_firmware_hdr *)sc->sc_blob; 2196 if (size < sizeof(struct iwi_firmware_hdr) + hdr->bsize + hdr->usize + hdr->fsize) { 2197 aprint_error_dev(sc->sc_dev, "image '%s' too small\n", 2198 sc->sc_fwname); 2199 error = EIO; 2200 goto fail2; 2201 } 2202 2203 hdr = (const struct iwi_firmware_hdr *)sc->sc_blob; 2204 DPRINTF(("firmware version = %d\n", le32toh(hdr->version))); 2205 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2206 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2207 aprint_error_dev(sc->sc_dev, 2208 "version for '%s' %d.%d != %d.%d\n", sc->sc_fwname, 2209 IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2210 IWI_FW_GET_MINOR(le32toh(hdr->version)), 2211 IWI_FW_REQ_MAJOR, IWI_FW_REQ_MINOR); 2212 error = EIO; 2213 goto fail2; 2214 } 2215 2216 kfw->boot_size = hdr->bsize; 2217 kfw->ucode_size = hdr->usize; 2218 kfw->main_size = hdr->fsize; 2219 2220 fw = sc->sc_blob + sizeof(struct iwi_firmware_hdr); 2221 kfw->boot = fw; 2222 fw += kfw->boot_size; 2223 kfw->ucode = fw; 2224 fw += kfw->ucode_size; 2225 kfw->main = fw; 2226 2227 DPRINTF(("Firmware cached: boot %p, ucode %p, main %p\n", 2228 kfw->boot, kfw->ucode, kfw->main)); 2229 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 2230 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 2231 2232 sc->flags |= IWI_FLAG_FW_CACHED; 2233 2234 return 0; 2235 2236 2237 fail2: firmware_free(sc->sc_blob, 0); 2238 fail1: 2239 return error; 2240 } 2241 2242 static void 2243 iwi_free_firmware(struct iwi_softc *sc) 2244 { 2245 2246 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 2247 return; 2248 2249 firmware_free(sc->sc_blob, 0); 2250 2251 sc->flags &= ~IWI_FLAG_FW_CACHED; 2252 } 2253 2254 static int 2255 iwi_config(struct iwi_softc *sc) 2256 { 2257 struct ieee80211com *ic = &sc->sc_ic; 2258 struct ifnet *ifp = &sc->sc_if; 2259 struct iwi_configuration config; 2260 struct iwi_rateset rs; 2261 struct iwi_txpower power; 2262 struct ieee80211_key *wk; 2263 struct iwi_wep_key wepkey; 2264 uint32_t data; 2265 int error, nchan, i; 2266 2267 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2268 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 2269 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 2270 IEEE80211_ADDR_LEN, 0); 2271 if (error != 0) 2272 return error; 2273 2274 memset(&config, 0, sizeof config); 2275 config.bluetooth_coexistence = sc->bluetooth; 2276 config.antenna = sc->antenna; 2277 config.silence_threshold = 0x1e; 2278 config.multicast_enabled = 1; 2279 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2280 config.disable_unicast_decryption = 1; 2281 config.disable_multicast_decryption = 1; 2282 DPRINTF(("Configuring adapter\n")); 2283 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 2284 0); 2285 if (error != 0) 2286 return error; 2287 2288 data = htole32(IWI_POWER_MODE_CAM); 2289 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2290 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2291 if (error != 0) 2292 return error; 2293 2294 data = htole32(ic->ic_rtsthreshold); 2295 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2296 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2297 if (error != 0) 2298 return error; 2299 2300 data = htole32(ic->ic_fragthreshold); 2301 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2302 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2303 if (error != 0) 2304 return error; 2305 2306 /* 2307 * Set default Tx power for 802.11b/g and 802.11a channels. 2308 */ 2309 nchan = 0; 2310 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2311 if (!IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i])) 2312 continue; 2313 power.chan[nchan].chan = i; 2314 power.chan[nchan].power = IWI_TXPOWER_MAX; 2315 nchan++; 2316 } 2317 power.nchan = nchan; 2318 2319 power.mode = IWI_MODE_11G; 2320 DPRINTF(("Setting .11g channels tx power\n")); 2321 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 2322 if (error != 0) 2323 return error; 2324 2325 power.mode = IWI_MODE_11B; 2326 DPRINTF(("Setting .11b channels tx power\n")); 2327 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 2328 if (error != 0) 2329 return error; 2330 2331 nchan = 0; 2332 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2333 if (!IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) 2334 continue; 2335 power.chan[nchan].chan = i; 2336 power.chan[nchan].power = IWI_TXPOWER_MAX; 2337 nchan++; 2338 } 2339 power.nchan = nchan; 2340 2341 if (nchan > 0) { /* 2915ABG only */ 2342 power.mode = IWI_MODE_11A; 2343 DPRINTF(("Setting .11a channels tx power\n")); 2344 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2345 0); 2346 if (error != 0) 2347 return error; 2348 } 2349 2350 rs.mode = IWI_MODE_11G; 2351 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2352 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2353 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2354 rs.nrates); 2355 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2356 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2357 if (error != 0) 2358 return error; 2359 2360 rs.mode = IWI_MODE_11A; 2361 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2362 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2363 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2364 rs.nrates); 2365 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2366 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2367 if (error != 0) 2368 return error; 2369 2370 /* if we have a desired ESSID, set it now */ 2371 if (ic->ic_des_esslen != 0) { 2372 #ifdef IWI_DEBUG 2373 if (iwi_debug > 0) { 2374 printf("Setting desired ESSID to "); 2375 ieee80211_print_essid(ic->ic_des_essid, 2376 ic->ic_des_esslen); 2377 printf("\n"); 2378 } 2379 #endif 2380 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ic->ic_des_essid, 2381 ic->ic_des_esslen, 0); 2382 if (error != 0) 2383 return error; 2384 } 2385 2386 data = htole32(arc4random()); 2387 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2388 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2389 if (error != 0) 2390 return error; 2391 2392 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 2393 /* XXX iwi_setwepkeys? */ 2394 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2395 wk = &ic->ic_crypto.cs_nw_keys[i]; 2396 2397 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2398 wepkey.idx = i; 2399 wepkey.len = wk->wk_keylen; 2400 memset(wepkey.key, 0, sizeof wepkey.key); 2401 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2402 DPRINTF(("Setting wep key index %u len %u\n", 2403 wepkey.idx, wepkey.len)); 2404 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2405 sizeof wepkey, 0); 2406 if (error != 0) 2407 return error; 2408 } 2409 } 2410 2411 /* Enable adapter */ 2412 DPRINTF(("Enabling adapter\n")); 2413 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2414 } 2415 2416 static int 2417 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2418 { 2419 struct ieee80211com *ic = &sc->sc_ic; 2420 struct iwi_scan_v2 scan; 2421 2422 (void)memset(&scan, 0, sizeof scan); 2423 2424 scan.dwelltime[IWI_SCAN_TYPE_PASSIVE] = htole16(2000); 2425 scan.channels[0] = 1 | 2426 (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ); 2427 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2428 iwi_scan_type_set(scan, 1, IWI_SCAN_TYPE_PASSIVE); 2429 2430 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2431 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2432 } 2433 2434 static int 2435 iwi_scan(struct iwi_softc *sc) 2436 { 2437 struct ieee80211com *ic = &sc->sc_ic; 2438 struct iwi_scan_v2 scan; 2439 uint32_t type; 2440 uint8_t *p; 2441 int i, count, idx; 2442 2443 (void)memset(&scan, 0, sizeof scan); 2444 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BROADCAST] = 2445 htole16(sc->dwelltime); 2446 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BDIRECT] = 2447 htole16(sc->dwelltime); 2448 2449 /* tell the firmware about the desired essid */ 2450 if (ic->ic_des_esslen) { 2451 int error; 2452 2453 DPRINTF(("%s: Setting adapter desired ESSID to %s\n", 2454 __func__, ic->ic_des_essid)); 2455 2456 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, 2457 ic->ic_des_essid, ic->ic_des_esslen, 1); 2458 if (error) 2459 return error; 2460 2461 type = IWI_SCAN_TYPE_ACTIVE_BDIRECT; 2462 } else { 2463 type = IWI_SCAN_TYPE_ACTIVE_BROADCAST; 2464 } 2465 2466 p = &scan.channels[0]; 2467 count = idx = 0; 2468 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2469 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2470 isset(ic->ic_chan_active, i)) { 2471 *++p = i; 2472 count++; 2473 idx++; 2474 iwi_scan_type_set(scan, idx, type); 2475 } 2476 } 2477 if (count) { 2478 *(p - count) = IWI_CHAN_5GHZ | count; 2479 p++; 2480 } 2481 2482 count = 0; 2483 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2484 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2485 isset(ic->ic_chan_active, i)) { 2486 *++p = i; 2487 count++; 2488 idx++; 2489 iwi_scan_type_set(scan, idx, type); 2490 } 2491 } 2492 *(p - count) = IWI_CHAN_2GHZ | count; 2493 2494 DPRINTF(("Start scanning\n")); 2495 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2496 } 2497 2498 static int 2499 iwi_auth_and_assoc(struct iwi_softc *sc) 2500 { 2501 struct ieee80211com *ic = &sc->sc_ic; 2502 struct ieee80211_node *ni = ic->ic_bss; 2503 struct ifnet *ifp = &sc->sc_if; 2504 struct ieee80211_wme_info wme; 2505 struct iwi_configuration config; 2506 struct iwi_associate assoc; 2507 struct iwi_rateset rs; 2508 uint16_t capinfo; 2509 uint32_t data; 2510 int error; 2511 2512 memset(&config, 0, sizeof config); 2513 config.bluetooth_coexistence = sc->bluetooth; 2514 config.antenna = sc->antenna; 2515 config.multicast_enabled = 1; 2516 config.silence_threshold = 0x1e; 2517 if (ic->ic_curmode == IEEE80211_MODE_11G) 2518 config.use_protection = 1; 2519 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2520 config.disable_unicast_decryption = 1; 2521 config.disable_multicast_decryption = 1; 2522 2523 DPRINTF(("Configuring adapter\n")); 2524 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2525 sizeof config, 1); 2526 if (error != 0) 2527 return error; 2528 2529 #ifdef IWI_DEBUG 2530 if (iwi_debug > 0) { 2531 aprint_debug_dev(sc->sc_dev, "Setting ESSID to "); 2532 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2533 aprint_debug("\n"); 2534 } 2535 #endif 2536 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2537 if (error != 0) 2538 return error; 2539 2540 /* the rate set has already been "negotiated" */ 2541 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2542 IWI_MODE_11G; 2543 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2544 rs.nrates = ni->ni_rates.rs_nrates; 2545 2546 if (rs.nrates > IWI_RATESET_SIZE) { 2547 DPRINTF(("Truncating negotiated rate set from %u\n", 2548 rs.nrates)); 2549 rs.nrates = IWI_RATESET_SIZE; 2550 } 2551 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2552 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2553 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2554 if (error != 0) 2555 return error; 2556 2557 if ((ic->ic_flags & IEEE80211_F_WME) && ni->ni_wme_ie != NULL) { 2558 wme.wme_id = IEEE80211_ELEMID_VENDOR; 2559 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 2560 wme.wme_oui[0] = 0x00; 2561 wme.wme_oui[1] = 0x50; 2562 wme.wme_oui[2] = 0xf2; 2563 wme.wme_type = WME_OUI_TYPE; 2564 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 2565 wme.wme_version = WME_VERSION; 2566 wme.wme_info = 0; 2567 2568 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 2569 error = iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme, 1); 2570 if (error != 0) 2571 return error; 2572 } 2573 2574 if (ic->ic_opt_ie != NULL) { 2575 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2576 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2577 ic->ic_opt_ie_len, 1); 2578 if (error != 0) 2579 return error; 2580 } 2581 data = htole32(ni->ni_rssi); 2582 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2583 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2584 if (error != 0) 2585 return error; 2586 2587 memset(&assoc, 0, sizeof assoc); 2588 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) 2589 assoc.mode = IWI_MODE_11A; 2590 else if (IEEE80211_IS_CHAN_G(ni->ni_chan)) 2591 assoc.mode = IWI_MODE_11G; 2592 else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) 2593 assoc.mode = IWI_MODE_11B; 2594 2595 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2596 2597 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2598 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2599 2600 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2601 assoc.plen = IWI_ASSOC_SHPREAMBLE; 2602 2603 if ((ic->ic_flags & IEEE80211_F_WME) && ni->ni_wme_ie != NULL) 2604 assoc.policy |= htole16(IWI_POLICY_WME); 2605 if (ic->ic_flags & IEEE80211_F_WPA) 2606 assoc.policy |= htole16(IWI_POLICY_WPA); 2607 if (ic->ic_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2608 assoc.type = IWI_HC_IBSS_START; 2609 else 2610 assoc.type = IWI_HC_ASSOC; 2611 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2612 2613 if (ic->ic_opmode == IEEE80211_M_IBSS) 2614 capinfo = IEEE80211_CAPINFO_IBSS; 2615 else 2616 capinfo = IEEE80211_CAPINFO_ESS; 2617 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2618 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2619 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2620 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2621 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2622 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2623 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2624 assoc.capinfo = htole16(capinfo); 2625 2626 assoc.lintval = htole16(ic->ic_lintval); 2627 assoc.intval = htole16(ni->ni_intval); 2628 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2629 if (ic->ic_opmode == IEEE80211_M_IBSS) 2630 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2631 else 2632 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2633 2634 DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x " 2635 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2636 assoc.type == IWI_HC_IBSS_START ? "Start" : "Join", 2637 ether_sprintf(assoc.bssid), ether_sprintf(assoc.dst), 2638 assoc.chan, le16toh(assoc.policy), assoc.auth, 2639 le16toh(assoc.capinfo), le16toh(assoc.lintval), 2640 le16toh(assoc.intval))); 2641 2642 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2643 } 2644 2645 static int 2646 iwi_init(struct ifnet *ifp) 2647 { 2648 struct iwi_softc *sc = ifp->if_softc; 2649 struct ieee80211com *ic = &sc->sc_ic; 2650 struct iwi_firmware *fw = &sc->fw; 2651 int i, error; 2652 2653 /* exit immediately if firmware has not been ioctl'd */ 2654 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2655 if ((error = iwi_cache_firmware(sc)) != 0) { 2656 aprint_error_dev(sc->sc_dev, 2657 "could not cache the firmware\n"); 2658 goto fail; 2659 } 2660 } 2661 2662 iwi_stop(ifp, 0); 2663 2664 if ((error = iwi_reset(sc)) != 0) { 2665 aprint_error_dev(sc->sc_dev, "could not reset adapter\n"); 2666 goto fail; 2667 } 2668 2669 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2670 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 2671 goto fail; 2672 } 2673 2674 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2675 aprint_error_dev(sc->sc_dev, "could not load microcode\n"); 2676 goto fail; 2677 } 2678 2679 iwi_stop_master(sc); 2680 2681 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2682 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2683 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2684 2685 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].desc_map->dm_segs[0].ds_addr); 2686 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 2687 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 2688 2689 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].desc_map->dm_segs[0].ds_addr); 2690 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 2691 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 2692 2693 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].desc_map->dm_segs[0].ds_addr); 2694 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 2695 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 2696 2697 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].desc_map->dm_segs[0].ds_addr); 2698 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 2699 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 2700 2701 for (i = 0; i < sc->rxq.count; i++) 2702 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2703 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2704 2705 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2706 2707 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2708 aprint_error_dev(sc->sc_dev, "could not load main firmware\n"); 2709 goto fail; 2710 } 2711 2712 sc->flags |= IWI_FLAG_FW_INITED; 2713 2714 if ((error = iwi_config(sc)) != 0) { 2715 aprint_error_dev(sc->sc_dev, "device configuration failed\n"); 2716 goto fail; 2717 } 2718 2719 ic->ic_state = IEEE80211_S_INIT; 2720 2721 ifp->if_flags &= ~IFF_OACTIVE; 2722 ifp->if_flags |= IFF_RUNNING; 2723 2724 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2725 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 2726 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2727 } else 2728 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2729 2730 return 0; 2731 2732 fail: ifp->if_flags &= ~IFF_UP; 2733 iwi_stop(ifp, 0); 2734 2735 return error; 2736 } 2737 2738 2739 /* 2740 * Return whether or not the radio is enabled in hardware 2741 * (i.e. the rfkill switch is "off"). 2742 */ 2743 static int 2744 iwi_getrfkill(struct iwi_softc *sc) 2745 { 2746 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 2747 } 2748 2749 static int 2750 iwi_sysctl_radio(SYSCTLFN_ARGS) 2751 { 2752 struct sysctlnode node; 2753 struct iwi_softc *sc; 2754 int val, error; 2755 2756 node = *rnode; 2757 sc = (struct iwi_softc *)node.sysctl_data; 2758 2759 val = !iwi_getrfkill(sc); 2760 2761 node.sysctl_data = &val; 2762 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2763 2764 if (error || newp == NULL) 2765 return error; 2766 2767 return 0; 2768 } 2769 2770 #ifdef IWI_DEBUG 2771 SYSCTL_SETUP(sysctl_iwi, "sysctl iwi(4) subtree setup") 2772 { 2773 int rc; 2774 const struct sysctlnode *rnode; 2775 const struct sysctlnode *cnode; 2776 2777 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 2778 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 2779 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 2780 goto err; 2781 2782 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 2783 CTLFLAG_PERMANENT, CTLTYPE_NODE, "iwi", 2784 SYSCTL_DESCR("iwi global controls"), 2785 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 2786 goto err; 2787 2788 /* control debugging printfs */ 2789 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2790 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2791 "debug", SYSCTL_DESCR("Enable debugging output"), 2792 NULL, 0, &iwi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 2793 goto err; 2794 2795 return; 2796 err: 2797 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 2798 } 2799 2800 #endif /* IWI_DEBUG */ 2801 2802 /* 2803 * Add sysctl knobs. 2804 */ 2805 static void 2806 iwi_sysctlattach(struct iwi_softc *sc) 2807 { 2808 int rc; 2809 const struct sysctlnode *rnode; 2810 const struct sysctlnode *cnode; 2811 2812 struct sysctllog **clog = &sc->sc_sysctllog; 2813 2814 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 2815 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 2816 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 2817 goto err; 2818 2819 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 2820 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 2821 SYSCTL_DESCR("iwi controls and statistics"), 2822 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 2823 goto err; 2824 2825 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2826 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 2827 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 2828 iwi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0) 2829 goto err; 2830 2831 sc->dwelltime = 100; 2832 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2833 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2834 "dwell", SYSCTL_DESCR("channel dwell time (ms) for AP/station scanning"), 2835 NULL, 0, &sc->dwelltime, 0, CTL_CREATE, CTL_EOL)) != 0) 2836 goto err; 2837 2838 sc->bluetooth = 0; 2839 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2840 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2841 "bluetooth", SYSCTL_DESCR("bluetooth coexistence"), 2842 NULL, 0, &sc->bluetooth, 0, CTL_CREATE, CTL_EOL)) != 0) 2843 goto err; 2844 2845 sc->antenna = IWI_ANTENNA_AUTO; 2846 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2847 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2848 "antenna", SYSCTL_DESCR("antenna (0=auto)"), 2849 NULL, 0, &sc->antenna, 0, CTL_CREATE, CTL_EOL)) != 0) 2850 goto err; 2851 2852 return; 2853 err: 2854 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 2855 } 2856 2857 static void 2858 iwi_stop(struct ifnet *ifp, int disable) 2859 { 2860 struct iwi_softc *sc = ifp->if_softc; 2861 struct ieee80211com *ic = &sc->sc_ic; 2862 2863 IWI_LED_OFF(sc); 2864 2865 iwi_stop_master(sc); 2866 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2867 2868 /* reset rings */ 2869 iwi_reset_cmd_ring(sc, &sc->cmdq); 2870 iwi_reset_tx_ring(sc, &sc->txq[0]); 2871 iwi_reset_tx_ring(sc, &sc->txq[1]); 2872 iwi_reset_tx_ring(sc, &sc->txq[2]); 2873 iwi_reset_tx_ring(sc, &sc->txq[3]); 2874 iwi_reset_rx_ring(sc, &sc->rxq); 2875 2876 ifp->if_timer = 0; 2877 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2878 2879 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2880 } 2881 2882 static void 2883 iwi_led_set(struct iwi_softc *sc, uint32_t state, int toggle) 2884 { 2885 uint32_t val; 2886 2887 val = MEM_READ_4(sc, IWI_MEM_EVENT_CTL); 2888 2889 switch (sc->nictype) { 2890 case 1: 2891 /* special NIC type: reversed leds */ 2892 if (state == IWI_LED_ACTIVITY) { 2893 state &= ~IWI_LED_ACTIVITY; 2894 state |= IWI_LED_ASSOCIATED; 2895 } else if (state == IWI_LED_ASSOCIATED) { 2896 state &= ~IWI_LED_ASSOCIATED; 2897 state |= IWI_LED_ACTIVITY; 2898 } 2899 /* and ignore toggle effect */ 2900 val |= state; 2901 break; 2902 case 0: 2903 case 2: 2904 case 3: 2905 case 4: 2906 val = (toggle && (val & state)) ? val & ~state : val | state; 2907 break; 2908 default: 2909 aprint_normal_dev(sc->sc_dev, "unknown NIC type %d\n", 2910 sc->nictype); 2911 return; 2912 break; 2913 } 2914 2915 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, val); 2916 2917 return; 2918 } 2919