1 /* $NetBSD: if_iwi.c,v 1.81 2009/05/06 09:25:15 cegger 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 1.81 2009/05/06 09:25:15 cegger 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 /* Permit loading the Intel firmware */ 94 static int iwi_accept_eula; 95 96 static int iwi_match(device_t, cfdata_t, void *); 97 static void iwi_attach(device_t, device_t, void *); 98 static int iwi_detach(device_t, int); 99 100 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 101 int); 102 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 103 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 104 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 105 int, bus_size_t, bus_size_t); 106 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 107 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 108 static struct mbuf * 109 iwi_alloc_rx_buf(struct iwi_softc *sc); 110 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 111 int); 112 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 113 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 114 115 static struct ieee80211_node *iwi_node_alloc(struct ieee80211_node_table *); 116 static void iwi_node_free(struct ieee80211_node *); 117 118 static int iwi_cvtrate(int); 119 static int iwi_media_change(struct ifnet *); 120 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 121 static int iwi_wme_update(struct ieee80211com *); 122 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 123 static int iwi_newstate(struct ieee80211com *, enum ieee80211_state, int); 124 static void iwi_fix_channel(struct ieee80211com *, struct mbuf *); 125 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 126 struct iwi_frame *); 127 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *); 128 static void iwi_cmd_intr(struct iwi_softc *); 129 static void iwi_rx_intr(struct iwi_softc *); 130 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *); 131 static int iwi_intr(void *); 132 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t, int); 133 static void iwi_write_ibssnode(struct iwi_softc *, const struct iwi_node *); 134 static int iwi_tx_start(struct ifnet *, struct mbuf *, struct ieee80211_node *, 135 int); 136 static void iwi_start(struct ifnet *); 137 static void iwi_watchdog(struct ifnet *); 138 139 static int iwi_alloc_unr(struct iwi_softc *); 140 static void iwi_free_unr(struct iwi_softc *, int); 141 142 static int iwi_get_table0(struct iwi_softc *, uint32_t *); 143 144 static int iwi_ioctl(struct ifnet *, u_long, void *); 145 static void iwi_stop_master(struct iwi_softc *); 146 static int iwi_reset(struct iwi_softc *); 147 static int iwi_load_ucode(struct iwi_softc *, void *, int); 148 static int iwi_load_firmware(struct iwi_softc *, void *, int); 149 static int iwi_cache_firmware(struct iwi_softc *); 150 static void iwi_free_firmware(struct iwi_softc *); 151 static int iwi_config(struct iwi_softc *); 152 static int iwi_set_chan(struct iwi_softc *, struct ieee80211_channel *); 153 static int iwi_scan(struct iwi_softc *); 154 static int iwi_auth_and_assoc(struct iwi_softc *); 155 static int iwi_init(struct ifnet *); 156 static void iwi_stop(struct ifnet *, int); 157 static int iwi_getrfkill(struct iwi_softc *); 158 static void iwi_led_set(struct iwi_softc *, uint32_t, int); 159 static void iwi_sysctlattach(struct iwi_softc *); 160 161 /* 162 * Supported rates for 802.11a/b/g modes (in 500Kbps unit). 163 */ 164 static const struct ieee80211_rateset iwi_rateset_11a = 165 { 8, { 12, 18, 24, 36, 48, 72, 96, 108 } }; 166 167 static const struct ieee80211_rateset iwi_rateset_11b = 168 { 4, { 2, 4, 11, 22 } }; 169 170 static const struct ieee80211_rateset iwi_rateset_11g = 171 { 12, { 2, 4, 11, 22, 12, 18, 24, 36, 48, 72, 96, 108 } }; 172 173 static inline uint8_t 174 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 175 { 176 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 177 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 178 } 179 180 static inline uint32_t 181 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 182 { 183 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 184 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 185 } 186 187 CFATTACH_DECL_NEW(iwi, sizeof (struct iwi_softc), iwi_match, iwi_attach, 188 iwi_detach, NULL); 189 190 static int 191 iwi_match(device_t parent, cfdata_t match, void *aux) 192 { 193 struct pci_attach_args *pa = aux; 194 195 if (PCI_VENDOR(pa->pa_id) != PCI_VENDOR_INTEL) 196 return 0; 197 198 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2200BG || 199 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2225BG || 200 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 201 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) 202 return 1; 203 204 return 0; 205 } 206 207 /* Base Address Register */ 208 #define IWI_PCI_BAR0 0x10 209 210 static void 211 iwi_attach(device_t parent, device_t self, void *aux) 212 { 213 struct iwi_softc *sc = device_private(self); 214 struct ieee80211com *ic = &sc->sc_ic; 215 struct ifnet *ifp = &sc->sc_if; 216 struct pci_attach_args *pa = aux; 217 const char *intrstr; 218 char devinfo[256]; 219 bus_space_tag_t memt; 220 bus_space_handle_t memh; 221 pci_intr_handle_t ih; 222 pcireg_t data; 223 uint16_t val; 224 int error, revision, i; 225 226 sc->sc_dev = self; 227 sc->sc_pct = pa->pa_pc; 228 sc->sc_pcitag = pa->pa_tag; 229 230 pci_devinfo(pa->pa_id, pa->pa_class, 0, devinfo, sizeof devinfo); 231 revision = PCI_REVISION(pa->pa_class); 232 aprint_normal(": %s (rev. 0x%02x)\n", devinfo, revision); 233 234 /* clear unit numbers allocated to IBSS */ 235 sc->sc_unr = 0; 236 237 /* power up chip */ 238 if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self, 239 NULL)) && error != EOPNOTSUPP) { 240 aprint_error_dev(self, "cannot activate %d\n", error); 241 return; 242 } 243 244 /* enable bus-mastering */ 245 data = pci_conf_read(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG); 246 data |= PCI_COMMAND_MASTER_ENABLE; 247 pci_conf_write(sc->sc_pct, sc->sc_pcitag, PCI_COMMAND_STATUS_REG, data); 248 249 /* map the register window */ 250 error = pci_mapreg_map(pa, IWI_PCI_BAR0, PCI_MAPREG_TYPE_MEM | 251 PCI_MAPREG_MEM_TYPE_32BIT, 0, &memt, &memh, NULL, &sc->sc_sz); 252 if (error != 0) { 253 aprint_error_dev(self, "could not map memory space\n"); 254 return; 255 } 256 257 sc->sc_st = memt; 258 sc->sc_sh = memh; 259 sc->sc_dmat = pa->pa_dmat; 260 261 /* disable interrupts */ 262 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 263 264 if (pci_intr_map(pa, &ih) != 0) { 265 aprint_error_dev(self, "could not map interrupt\n"); 266 return; 267 } 268 269 intrstr = pci_intr_string(sc->sc_pct, ih); 270 sc->sc_ih = pci_intr_establish(sc->sc_pct, ih, IPL_NET, iwi_intr, sc); 271 if (sc->sc_ih == NULL) { 272 aprint_error_dev(self, "could not establish interrupt"); 273 if (intrstr != NULL) 274 aprint_error(" at %s", intrstr); 275 aprint_error("\n"); 276 return; 277 } 278 aprint_normal_dev(self, "interrupting at %s\n", intrstr); 279 280 if (iwi_reset(sc) != 0) { 281 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 282 aprint_error_dev(self, "could not reset adapter\n"); 283 return; 284 } 285 286 ic->ic_ifp = ifp; 287 ic->ic_wme.wme_update = iwi_wme_update; 288 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 289 ic->ic_opmode = IEEE80211_M_STA; /* default to BSS mode */ 290 ic->ic_state = IEEE80211_S_INIT; 291 292 sc->sc_fwname = "ipw2200-bss.fw"; 293 294 /* set device capabilities */ 295 ic->ic_caps = 296 IEEE80211_C_IBSS | /* IBSS mode supported */ 297 IEEE80211_C_MONITOR | /* monitor mode supported */ 298 IEEE80211_C_TXPMGT | /* tx power management */ 299 IEEE80211_C_SHPREAMBLE | /* short preamble supported */ 300 IEEE80211_C_SHSLOT | /* short slot time supported */ 301 IEEE80211_C_WPA | /* 802.11i */ 302 IEEE80211_C_WME; /* 802.11e */ 303 304 /* read MAC address from EEPROM */ 305 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 306 ic->ic_myaddr[0] = val & 0xff; 307 ic->ic_myaddr[1] = val >> 8; 308 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 309 ic->ic_myaddr[2] = val & 0xff; 310 ic->ic_myaddr[3] = val >> 8; 311 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 312 ic->ic_myaddr[4] = val & 0xff; 313 ic->ic_myaddr[5] = val >> 8; 314 315 aprint_verbose_dev(self, "802.11 address %s\n", 316 ether_sprintf(ic->ic_myaddr)); 317 318 /* read the NIC type from EEPROM */ 319 val = iwi_read_prom_word(sc, IWI_EEPROM_NIC_TYPE); 320 sc->nictype = val & 0xff; 321 322 DPRINTF(("%s: NIC type %d\n", device_xname(self), sc->nictype)); 323 324 if (PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_1 || 325 PCI_PRODUCT(pa->pa_id) == PCI_PRODUCT_INTEL_PRO_WL_2915ABG_2) { 326 /* set supported .11a rates (2915ABG only) */ 327 ic->ic_sup_rates[IEEE80211_MODE_11A] = iwi_rateset_11a; 328 329 /* set supported .11a channels */ 330 for (i = 36; i <= 64; i += 4) { 331 ic->ic_channels[i].ic_freq = 332 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 333 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 334 } 335 for (i = 149; i <= 165; i += 4) { 336 ic->ic_channels[i].ic_freq = 337 ieee80211_ieee2mhz(i, IEEE80211_CHAN_5GHZ); 338 ic->ic_channels[i].ic_flags = IEEE80211_CHAN_A; 339 } 340 } 341 342 /* set supported .11b and .11g rates */ 343 ic->ic_sup_rates[IEEE80211_MODE_11B] = iwi_rateset_11b; 344 ic->ic_sup_rates[IEEE80211_MODE_11G] = iwi_rateset_11g; 345 346 /* set supported .11b and .11g channels (1 through 14) */ 347 for (i = 1; i <= 14; i++) { 348 ic->ic_channels[i].ic_freq = 349 ieee80211_ieee2mhz(i, IEEE80211_CHAN_2GHZ); 350 ic->ic_channels[i].ic_flags = 351 IEEE80211_CHAN_CCK | IEEE80211_CHAN_OFDM | 352 IEEE80211_CHAN_DYN | IEEE80211_CHAN_2GHZ; 353 } 354 355 ifp->if_softc = sc; 356 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 357 ifp->if_init = iwi_init; 358 ifp->if_stop = iwi_stop; 359 ifp->if_ioctl = iwi_ioctl; 360 ifp->if_start = iwi_start; 361 ifp->if_watchdog = iwi_watchdog; 362 IFQ_SET_READY(&ifp->if_snd); 363 memcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 364 365 if_attach(ifp); 366 ieee80211_ifattach(ic); 367 /* override default methods */ 368 ic->ic_node_alloc = iwi_node_alloc; 369 sc->sc_node_free = ic->ic_node_free; 370 ic->ic_node_free = iwi_node_free; 371 /* override state transition machine */ 372 sc->sc_newstate = ic->ic_newstate; 373 ic->ic_newstate = iwi_newstate; 374 ieee80211_media_init(ic, iwi_media_change, iwi_media_status); 375 376 /* 377 * Allocate rings. 378 */ 379 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 380 aprint_error_dev(self, "could not allocate command ring\n"); 381 goto fail; 382 } 383 384 error = iwi_alloc_tx_ring(sc, &sc->txq[0], IWI_TX_RING_COUNT, 385 IWI_CSR_TX1_RIDX, IWI_CSR_TX1_WIDX); 386 if (error != 0) { 387 aprint_error_dev(self, "could not allocate Tx ring 1\n"); 388 goto fail; 389 } 390 391 error = iwi_alloc_tx_ring(sc, &sc->txq[1], IWI_TX_RING_COUNT, 392 IWI_CSR_TX2_RIDX, IWI_CSR_TX2_WIDX); 393 if (error != 0) { 394 aprint_error_dev(self, "could not allocate Tx ring 2\n"); 395 goto fail; 396 } 397 398 error = iwi_alloc_tx_ring(sc, &sc->txq[2], IWI_TX_RING_COUNT, 399 IWI_CSR_TX3_RIDX, IWI_CSR_TX3_WIDX); 400 if (error != 0) { 401 aprint_error_dev(self, "could not allocate Tx ring 3\n"); 402 goto fail; 403 } 404 405 error = iwi_alloc_tx_ring(sc, &sc->txq[3], IWI_TX_RING_COUNT, 406 IWI_CSR_TX4_RIDX, IWI_CSR_TX4_WIDX); 407 if (error != 0) { 408 aprint_error_dev(self, "could not allocate Tx ring 4\n"); 409 goto fail; 410 } 411 412 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 413 aprint_error_dev(self, "could not allocate Rx ring\n"); 414 goto fail; 415 } 416 417 #if NBPFILTER > 0 418 bpfattach2(ifp, DLT_IEEE802_11_RADIO, 419 sizeof (struct ieee80211_frame) + 64, &sc->sc_drvbpf); 420 421 sc->sc_rxtap_len = sizeof sc->sc_rxtapu; 422 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 423 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 424 425 sc->sc_txtap_len = sizeof sc->sc_txtapu; 426 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 427 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 428 #endif 429 430 iwi_sysctlattach(sc); 431 432 if (!pmf_device_register(self, NULL, NULL)) 433 aprint_error_dev(self, "couldn't establish power handler\n"); 434 else 435 pmf_class_network_register(self, ifp); 436 437 ieee80211_announce(ic); 438 439 return; 440 441 fail: iwi_detach(self, 0); 442 } 443 444 static int 445 iwi_detach(device_t self, int flags) 446 { 447 struct iwi_softc *sc = device_private(self); 448 struct ifnet *ifp = &sc->sc_if; 449 450 pmf_device_deregister(self); 451 452 if (ifp != NULL) 453 iwi_stop(ifp, 1); 454 455 iwi_free_firmware(sc); 456 457 ieee80211_ifdetach(&sc->sc_ic); 458 if (ifp != NULL) 459 if_detach(ifp); 460 461 iwi_free_cmd_ring(sc, &sc->cmdq); 462 iwi_free_tx_ring(sc, &sc->txq[0]); 463 iwi_free_tx_ring(sc, &sc->txq[1]); 464 iwi_free_tx_ring(sc, &sc->txq[2]); 465 iwi_free_tx_ring(sc, &sc->txq[3]); 466 iwi_free_rx_ring(sc, &sc->rxq); 467 468 if (sc->sc_ih != NULL) { 469 pci_intr_disestablish(sc->sc_pct, sc->sc_ih); 470 sc->sc_ih = NULL; 471 } 472 473 bus_space_unmap(sc->sc_st, sc->sc_sh, sc->sc_sz); 474 475 return 0; 476 } 477 478 static int 479 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, 480 int count) 481 { 482 int error, nsegs; 483 484 ring->count = count; 485 ring->queued = 0; 486 ring->cur = ring->next = 0; 487 488 /* 489 * Allocate and map command ring 490 */ 491 error = bus_dmamap_create(sc->sc_dmat, 492 IWI_CMD_DESC_SIZE * count, 1, 493 IWI_CMD_DESC_SIZE * count, 0, 494 BUS_DMA_NOWAIT, &ring->desc_map); 495 if (error != 0) { 496 aprint_error_dev(sc->sc_dev, 497 "could not create command ring DMA map\n"); 498 ring->desc_map = NULL; 499 goto fail; 500 } 501 502 error = bus_dmamem_alloc(sc->sc_dmat, 503 IWI_CMD_DESC_SIZE * count, PAGE_SIZE, 0, 504 &sc->cmdq.desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 505 if (error != 0) { 506 aprint_error_dev(sc->sc_dev, 507 "could not allocate command ring DMA memory\n"); 508 goto fail; 509 } 510 511 error = bus_dmamem_map(sc->sc_dmat, &sc->cmdq.desc_seg, nsegs, 512 IWI_CMD_DESC_SIZE * count, 513 (void **)&sc->cmdq.desc, BUS_DMA_NOWAIT); 514 if (error != 0) { 515 aprint_error_dev(sc->sc_dev, 516 "could not map command ring DMA memory\n"); 517 goto fail; 518 } 519 520 error = bus_dmamap_load(sc->sc_dmat, sc->cmdq.desc_map, sc->cmdq.desc, 521 IWI_CMD_DESC_SIZE * count, NULL, 522 BUS_DMA_NOWAIT); 523 if (error != 0) { 524 aprint_error_dev(sc->sc_dev, 525 "could not load command ring DMA map\n"); 526 goto fail; 527 } 528 529 memset(sc->cmdq.desc, 0, 530 IWI_CMD_DESC_SIZE * count); 531 532 return 0; 533 534 fail: return error; 535 } 536 537 static void 538 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 539 { 540 int i; 541 542 for (i = ring->next; i != ring->cur;) { 543 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 544 i * IWI_CMD_DESC_SIZE, IWI_CMD_DESC_SIZE, 545 BUS_DMASYNC_POSTWRITE); 546 547 wakeup(&ring->desc[i]); 548 i = (i + 1) % ring->count; 549 } 550 551 ring->queued = 0; 552 ring->cur = ring->next = 0; 553 } 554 555 static void 556 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 557 { 558 if (ring->desc_map != NULL) { 559 if (ring->desc != NULL) { 560 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 561 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 562 IWI_CMD_DESC_SIZE * ring->count); 563 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 564 } 565 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 566 } 567 } 568 569 static int 570 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, 571 int count, bus_size_t csr_ridx, bus_size_t csr_widx) 572 { 573 int i, error, nsegs; 574 575 ring->count = 0; 576 ring->queued = 0; 577 ring->cur = ring->next = 0; 578 ring->csr_ridx = csr_ridx; 579 ring->csr_widx = csr_widx; 580 581 /* 582 * Allocate and map Tx ring 583 */ 584 error = bus_dmamap_create(sc->sc_dmat, 585 IWI_TX_DESC_SIZE * count, 1, 586 IWI_TX_DESC_SIZE * count, 0, BUS_DMA_NOWAIT, 587 &ring->desc_map); 588 if (error != 0) { 589 aprint_error_dev(sc->sc_dev, 590 "could not create tx ring DMA map\n"); 591 ring->desc_map = NULL; 592 goto fail; 593 } 594 595 error = bus_dmamem_alloc(sc->sc_dmat, 596 IWI_TX_DESC_SIZE * count, PAGE_SIZE, 0, 597 &ring->desc_seg, 1, &nsegs, BUS_DMA_NOWAIT); 598 if (error != 0) { 599 aprint_error_dev(sc->sc_dev, 600 "could not allocate tx ring DMA memory\n"); 601 goto fail; 602 } 603 604 error = bus_dmamem_map(sc->sc_dmat, &ring->desc_seg, nsegs, 605 IWI_TX_DESC_SIZE * count, 606 (void **)&ring->desc, BUS_DMA_NOWAIT); 607 if (error != 0) { 608 aprint_error_dev(sc->sc_dev, 609 "could not map tx ring DMA memory\n"); 610 goto fail; 611 } 612 613 error = bus_dmamap_load(sc->sc_dmat, ring->desc_map, ring->desc, 614 IWI_TX_DESC_SIZE * count, NULL, 615 BUS_DMA_NOWAIT); 616 if (error != 0) { 617 aprint_error_dev(sc->sc_dev, 618 "could not load tx ring DMA map\n"); 619 goto fail; 620 } 621 622 memset(ring->desc, 0, IWI_TX_DESC_SIZE * count); 623 624 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 625 M_NOWAIT | M_ZERO); 626 if (ring->data == NULL) { 627 aprint_error_dev(sc->sc_dev, "could not allocate soft data\n"); 628 error = ENOMEM; 629 goto fail; 630 } 631 ring->count = count; 632 633 /* 634 * Allocate Tx buffers DMA maps 635 */ 636 for (i = 0; i < count; i++) { 637 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, IWI_MAX_NSEG, 638 MCLBYTES, 0, BUS_DMA_NOWAIT, &ring->data[i].map); 639 if (error != 0) { 640 aprint_error_dev(sc->sc_dev, 641 "could not create tx buf DMA map"); 642 ring->data[i].map = NULL; 643 goto fail; 644 } 645 } 646 return 0; 647 648 fail: return error; 649 } 650 651 static void 652 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 653 { 654 struct iwi_tx_data *data; 655 int i; 656 657 for (i = 0; i < ring->count; i++) { 658 data = &ring->data[i]; 659 660 if (data->m != NULL) { 661 m_freem(data->m); 662 data->m = NULL; 663 } 664 665 if (data->map != NULL) { 666 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 667 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 668 bus_dmamap_unload(sc->sc_dmat, data->map); 669 } 670 671 if (data->ni != NULL) { 672 ieee80211_free_node(data->ni); 673 data->ni = NULL; 674 } 675 } 676 677 ring->queued = 0; 678 ring->cur = ring->next = 0; 679 } 680 681 static void 682 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 683 { 684 int i; 685 struct iwi_tx_data *data; 686 687 if (ring->desc_map != NULL) { 688 if (ring->desc != NULL) { 689 bus_dmamap_unload(sc->sc_dmat, ring->desc_map); 690 bus_dmamem_unmap(sc->sc_dmat, (void *)ring->desc, 691 IWI_TX_DESC_SIZE * ring->count); 692 bus_dmamem_free(sc->sc_dmat, &ring->desc_seg, 1); 693 } 694 bus_dmamap_destroy(sc->sc_dmat, ring->desc_map); 695 } 696 697 for (i = 0; i < ring->count; i++) { 698 data = &ring->data[i]; 699 700 if (data->m != NULL) { 701 m_freem(data->m); 702 } 703 704 if (data->map != NULL) { 705 bus_dmamap_unload(sc->sc_dmat, data->map); 706 bus_dmamap_destroy(sc->sc_dmat, data->map); 707 } 708 } 709 } 710 711 static int 712 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 713 { 714 int i, error; 715 716 ring->count = 0; 717 ring->cur = 0; 718 719 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 720 M_NOWAIT | M_ZERO); 721 if (ring->data == NULL) { 722 aprint_error_dev(sc->sc_dev, "could not allocate soft data\n"); 723 error = ENOMEM; 724 goto fail; 725 } 726 727 ring->count = count; 728 729 /* 730 * Allocate and map Rx buffers 731 */ 732 for (i = 0; i < count; i++) { 733 734 error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 735 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &ring->data[i].map); 736 if (error != 0) { 737 aprint_error_dev(sc->sc_dev, 738 "could not create rx buf DMA map"); 739 ring->data[i].map = NULL; 740 goto fail; 741 } 742 743 if ((ring->data[i].m = iwi_alloc_rx_buf(sc)) == NULL) { 744 error = ENOMEM; 745 goto fail; 746 } 747 748 error = bus_dmamap_load_mbuf(sc->sc_dmat, ring->data[i].map, 749 ring->data[i].m, BUS_DMA_READ | BUS_DMA_NOWAIT); 750 if (error != 0) { 751 aprint_error_dev(sc->sc_dev, 752 "could not load rx buffer DMA map\n"); 753 goto fail; 754 } 755 756 bus_dmamap_sync(sc->sc_dmat, ring->data[i].map, 0, 757 ring->data[i].map->dm_mapsize, BUS_DMASYNC_PREREAD); 758 } 759 760 return 0; 761 762 fail: return error; 763 } 764 765 static void 766 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 767 { 768 ring->cur = 0; 769 } 770 771 static void 772 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 773 { 774 int i; 775 struct iwi_rx_data *data; 776 777 for (i = 0; i < ring->count; i++) { 778 data = &ring->data[i]; 779 780 if (data->m != NULL) { 781 m_freem(data->m); 782 } 783 784 if (data->map != NULL) { 785 bus_dmamap_unload(sc->sc_dmat, data->map); 786 bus_dmamap_destroy(sc->sc_dmat, data->map); 787 } 788 789 } 790 } 791 792 static struct ieee80211_node * 793 iwi_node_alloc(struct ieee80211_node_table *nt) 794 { 795 struct iwi_node *in; 796 797 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 798 if (in == NULL) 799 return NULL; 800 801 in->in_station = -1; 802 803 return &in->in_node; 804 } 805 806 static int 807 iwi_alloc_unr(struct iwi_softc *sc) 808 { 809 int i; 810 811 for (i = 0; i < IWI_MAX_IBSSNODE - 1; i++) 812 if ((sc->sc_unr & (1 << i)) == 0) { 813 sc->sc_unr |= 1 << i; 814 return i; 815 } 816 817 return -1; 818 } 819 820 static void 821 iwi_free_unr(struct iwi_softc *sc, int r) 822 { 823 824 sc->sc_unr &= 1 << r; 825 } 826 827 static void 828 iwi_node_free(struct ieee80211_node *ni) 829 { 830 struct ieee80211com *ic = ni->ni_ic; 831 struct iwi_softc *sc = ic->ic_ifp->if_softc; 832 struct iwi_node *in = (struct iwi_node *)ni; 833 834 if (in->in_station != -1) 835 iwi_free_unr(sc, in->in_station); 836 837 sc->sc_node_free(ni); 838 } 839 840 static int 841 iwi_media_change(struct ifnet *ifp) 842 { 843 int error; 844 845 error = ieee80211_media_change(ifp); 846 if (error != ENETRESET) 847 return error; 848 849 if ((ifp->if_flags & (IFF_UP | IFF_RUNNING)) == (IFF_UP | IFF_RUNNING)) 850 iwi_init(ifp); 851 852 return 0; 853 } 854 855 /* 856 * Convert h/w rate code to IEEE rate code. 857 */ 858 static int 859 iwi_cvtrate(int iwirate) 860 { 861 switch (iwirate) { 862 case IWI_RATE_DS1: return 2; 863 case IWI_RATE_DS2: return 4; 864 case IWI_RATE_DS5: return 11; 865 case IWI_RATE_DS11: return 22; 866 case IWI_RATE_OFDM6: return 12; 867 case IWI_RATE_OFDM9: return 18; 868 case IWI_RATE_OFDM12: return 24; 869 case IWI_RATE_OFDM18: return 36; 870 case IWI_RATE_OFDM24: return 48; 871 case IWI_RATE_OFDM36: return 72; 872 case IWI_RATE_OFDM48: return 96; 873 case IWI_RATE_OFDM54: return 108; 874 } 875 return 0; 876 } 877 878 /* 879 * The firmware automatically adapts the transmit speed. We report its current 880 * value here. 881 */ 882 static void 883 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 884 { 885 struct iwi_softc *sc = ifp->if_softc; 886 struct ieee80211com *ic = &sc->sc_ic; 887 int rate; 888 889 imr->ifm_status = IFM_AVALID; 890 imr->ifm_active = IFM_IEEE80211; 891 if (ic->ic_state == IEEE80211_S_RUN) 892 imr->ifm_status |= IFM_ACTIVE; 893 894 /* read current transmission rate from adapter */ 895 rate = iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 896 imr->ifm_active |= ieee80211_rate2media(ic, rate, ic->ic_curmode); 897 898 switch (ic->ic_opmode) { 899 case IEEE80211_M_STA: 900 break; 901 902 case IEEE80211_M_IBSS: 903 imr->ifm_active |= IFM_IEEE80211_ADHOC; 904 break; 905 906 case IEEE80211_M_MONITOR: 907 imr->ifm_active |= IFM_IEEE80211_MONITOR; 908 break; 909 910 case IEEE80211_M_AHDEMO: 911 case IEEE80211_M_HOSTAP: 912 /* should not get there */ 913 break; 914 } 915 } 916 917 static int 918 iwi_newstate(struct ieee80211com *ic, enum ieee80211_state nstate, int arg) 919 { 920 struct iwi_softc *sc = ic->ic_ifp->if_softc; 921 922 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 923 ieee80211_state_name[ic->ic_state], 924 ieee80211_state_name[nstate], sc->flags)); 925 926 switch (nstate) { 927 case IEEE80211_S_SCAN: 928 if (sc->flags & IWI_FLAG_SCANNING) 929 break; 930 931 ieee80211_node_table_reset(&ic->ic_scan); 932 ic->ic_flags |= IEEE80211_F_SCAN | IEEE80211_F_ASCAN; 933 sc->flags |= IWI_FLAG_SCANNING; 934 /* blink the led while scanning */ 935 iwi_led_set(sc, IWI_LED_ASSOCIATED, 1); 936 iwi_scan(sc); 937 break; 938 939 case IEEE80211_S_AUTH: 940 iwi_auth_and_assoc(sc); 941 break; 942 943 case IEEE80211_S_RUN: 944 if (ic->ic_opmode == IEEE80211_M_IBSS) 945 ieee80211_new_state(ic, IEEE80211_S_AUTH, -1); 946 else if (ic->ic_opmode == IEEE80211_M_MONITOR) 947 iwi_set_chan(sc, ic->ic_ibss_chan); 948 949 return (*sc->sc_newstate)(ic, nstate, 950 IEEE80211_FC0_SUBTYPE_ASSOC_RESP); 951 952 case IEEE80211_S_ASSOC: 953 iwi_led_set(sc, IWI_LED_ASSOCIATED, 0); 954 break; 955 956 case IEEE80211_S_INIT: 957 sc->flags &= ~IWI_FLAG_SCANNING; 958 return (*sc->sc_newstate)(ic, nstate, arg); 959 } 960 961 ic->ic_state = nstate; 962 return 0; 963 } 964 965 /* 966 * WME parameters coming from IEEE 802.11e specification. These values are 967 * already declared in ieee80211_proto.c, but they are static so they can't 968 * be reused here. 969 */ 970 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 971 { 0, 3, 5, 7, 0, 0, }, /* WME_AC_BE */ 972 { 0, 3, 5, 10, 0, 0, }, /* WME_AC_BK */ 973 { 0, 2, 4, 5, 188, 0, }, /* WME_AC_VI */ 974 { 0, 2, 3, 4, 102, 0, }, /* WME_AC_VO */ 975 }; 976 977 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 978 { 0, 3, 4, 6, 0, 0, }, /* WME_AC_BE */ 979 { 0, 3, 4, 10, 0, 0, }, /* WME_AC_BK */ 980 { 0, 2, 3, 4, 94, 0, }, /* WME_AC_VI */ 981 { 0, 2, 2, 3, 47, 0, }, /* WME_AC_VO */ 982 }; 983 984 static int 985 iwi_wme_update(struct ieee80211com *ic) 986 { 987 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 988 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 989 struct iwi_softc *sc = ic->ic_ifp->if_softc; 990 struct iwi_wme_params wme[3]; 991 const struct wmeParams *wmep; 992 int ac; 993 994 /* 995 * We shall not override firmware default WME values if WME is not 996 * actually enabled. 997 */ 998 if (!(ic->ic_flags & IEEE80211_F_WME)) 999 return 0; 1000 1001 for (ac = 0; ac < WME_NUM_AC; ac++) { 1002 /* set WME values for current operating mode */ 1003 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1004 wme[0].aifsn[ac] = wmep->wmep_aifsn; 1005 wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1006 wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1007 wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1008 wme[0].acm[ac] = wmep->wmep_acm; 1009 1010 /* set WME values for CCK modulation */ 1011 wmep = &iwi_wme_cck_params[ac]; 1012 wme[1].aifsn[ac] = wmep->wmep_aifsn; 1013 wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1014 wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1015 wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1016 wme[1].acm[ac] = wmep->wmep_acm; 1017 1018 /* set WME values for OFDM modulation */ 1019 wmep = &iwi_wme_ofdm_params[ac]; 1020 wme[2].aifsn[ac] = wmep->wmep_aifsn; 1021 wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1022 wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1023 wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1024 wme[2].acm[ac] = wmep->wmep_acm; 1025 } 1026 1027 DPRINTF(("Setting WME parameters\n")); 1028 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, wme, sizeof wme, 1); 1029 #undef IWI_USEC 1030 #undef IWI_EXP2 1031 } 1032 1033 /* 1034 * Read 16 bits at address 'addr' from the serial EEPROM. 1035 */ 1036 static uint16_t 1037 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1038 { 1039 uint32_t tmp; 1040 uint16_t val; 1041 int n; 1042 1043 /* Clock C once before the first command */ 1044 IWI_EEPROM_CTL(sc, 0); 1045 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1046 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1047 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1048 1049 /* Write start bit (1) */ 1050 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1051 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1052 1053 /* Write READ opcode (10) */ 1054 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1055 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1056 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1057 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1058 1059 /* Write address A7-A0 */ 1060 for (n = 7; n >= 0; n--) { 1061 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1062 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1063 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1064 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1065 } 1066 1067 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1068 1069 /* Read data Q15-Q0 */ 1070 val = 0; 1071 for (n = 15; n >= 0; n--) { 1072 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1073 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1074 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1075 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1076 } 1077 1078 IWI_EEPROM_CTL(sc, 0); 1079 1080 /* Clear Chip Select and clock C */ 1081 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1082 IWI_EEPROM_CTL(sc, 0); 1083 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1084 1085 return val; 1086 } 1087 1088 /* 1089 * XXX: Hack to set the current channel to the value advertised in beacons or 1090 * probe responses. Only used during AP detection. 1091 */ 1092 static void 1093 iwi_fix_channel(struct ieee80211com *ic, struct mbuf *m) 1094 { 1095 struct ieee80211_frame *wh; 1096 uint8_t subtype; 1097 uint8_t *frm, *efrm; 1098 1099 wh = mtod(m, struct ieee80211_frame *); 1100 1101 if ((wh->i_fc[0] & IEEE80211_FC0_TYPE_MASK) != IEEE80211_FC0_TYPE_MGT) 1102 return; 1103 1104 subtype = wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK; 1105 1106 if (subtype != IEEE80211_FC0_SUBTYPE_BEACON && 1107 subtype != IEEE80211_FC0_SUBTYPE_PROBE_RESP) 1108 return; 1109 1110 frm = (uint8_t *)(wh + 1); 1111 efrm = mtod(m, uint8_t *) + m->m_len; 1112 1113 frm += 12; /* skip tstamp, bintval and capinfo fields */ 1114 while (frm < efrm) { 1115 if (*frm == IEEE80211_ELEMID_DSPARMS) 1116 #if IEEE80211_CHAN_MAX < 255 1117 if (frm[2] <= IEEE80211_CHAN_MAX) 1118 #endif 1119 ic->ic_curchan = &ic->ic_channels[frm[2]]; 1120 1121 frm += frm[1] + 2; 1122 } 1123 } 1124 1125 static struct mbuf * 1126 iwi_alloc_rx_buf(struct iwi_softc *sc) 1127 { 1128 struct mbuf *m; 1129 1130 MGETHDR(m, M_DONTWAIT, MT_DATA); 1131 if (m == NULL) { 1132 aprint_error_dev(sc->sc_dev, "could not allocate rx mbuf\n"); 1133 return NULL; 1134 } 1135 1136 MCLGET(m, M_DONTWAIT); 1137 if (!(m->m_flags & M_EXT)) { 1138 aprint_error_dev(sc->sc_dev, 1139 "could not allocate rx mbuf cluster\n"); 1140 m_freem(m); 1141 return NULL; 1142 } 1143 1144 m->m_pkthdr.len = m->m_len = m->m_ext.ext_size; 1145 return m; 1146 } 1147 1148 static void 1149 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1150 struct iwi_frame *frame) 1151 { 1152 struct ieee80211com *ic = &sc->sc_ic; 1153 struct ifnet *ifp = ic->ic_ifp; 1154 struct mbuf *m, *m_new; 1155 struct ieee80211_frame *wh; 1156 struct ieee80211_node *ni; 1157 int error; 1158 1159 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u\n", 1160 le16toh(frame->len), frame->chan, frame->rssi_dbm)); 1161 1162 if (le16toh(frame->len) < sizeof (struct ieee80211_frame) || 1163 le16toh(frame->len) > MCLBYTES) { 1164 DPRINTF(("%s: bad frame length\n", device_xname(sc->sc_dev))); 1165 ifp->if_ierrors++; 1166 return; 1167 } 1168 1169 /* 1170 * Try to allocate a new mbuf for this ring element and 1171 * load it before processing the current mbuf. If the ring 1172 * element cannot be reloaded, drop the received packet 1173 * and reuse the old mbuf. In the unlikely case that 1174 * the old mbuf can't be reloaded either, explicitly panic. 1175 * 1176 * XXX Reorganize buffer by moving elements from the logical 1177 * end of the ring to the front instead of dropping. 1178 */ 1179 if ((m_new = iwi_alloc_rx_buf(sc)) == NULL) { 1180 ifp->if_ierrors++; 1181 return; 1182 } 1183 1184 bus_dmamap_unload(sc->sc_dmat, data->map); 1185 1186 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m_new, 1187 BUS_DMA_READ | BUS_DMA_NOWAIT); 1188 if (error != 0) { 1189 aprint_error_dev(sc->sc_dev, 1190 "could not load rx buf DMA map\n"); 1191 m_freem(m_new); 1192 ifp->if_ierrors++; 1193 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, 1194 data->m, BUS_DMA_READ | BUS_DMA_NOWAIT); 1195 if (error) 1196 panic("%s: unable to remap rx buf", 1197 device_xname(sc->sc_dev)); 1198 return; 1199 } 1200 1201 /* 1202 * New mbuf successfully loaded, update RX ring and continue 1203 * processing. 1204 */ 1205 m = data->m; 1206 data->m = m_new; 1207 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, data->map->dm_segs[0].ds_addr); 1208 1209 /* Finalize mbuf */ 1210 m->m_pkthdr.rcvif = ifp; 1211 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1212 sizeof (struct iwi_frame) + le16toh(frame->len); 1213 1214 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1215 1216 if (ic->ic_state == IEEE80211_S_SCAN) 1217 iwi_fix_channel(ic, m); 1218 1219 #if NBPFILTER > 0 1220 if (sc->sc_drvbpf != NULL) { 1221 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1222 1223 tap->wr_flags = 0; 1224 tap->wr_rate = iwi_cvtrate(frame->rate); 1225 tap->wr_chan_freq = 1226 htole16(ic->ic_channels[frame->chan].ic_freq); 1227 tap->wr_chan_flags = 1228 htole16(ic->ic_channels[frame->chan].ic_flags); 1229 tap->wr_antsignal = frame->signal; 1230 tap->wr_antenna = frame->antenna; 1231 1232 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_rxtap_len, m); 1233 } 1234 #endif 1235 wh = mtod(m, struct ieee80211_frame *); 1236 ni = ieee80211_find_rxnode(ic, (struct ieee80211_frame_min *)wh); 1237 1238 /* Send the frame to the upper layer */ 1239 ieee80211_input(ic, m, ni, frame->rssi_dbm, 0); 1240 1241 /* node is no longer needed */ 1242 ieee80211_free_node(ni); 1243 } 1244 1245 static void 1246 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1247 { 1248 struct ieee80211com *ic = &sc->sc_ic; 1249 struct iwi_notif_scan_channel *chan; 1250 struct iwi_notif_scan_complete *scan; 1251 struct iwi_notif_authentication *auth; 1252 struct iwi_notif_association *assoc; 1253 struct iwi_notif_beacon_state *beacon; 1254 1255 switch (notif->type) { 1256 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1257 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1258 1259 DPRINTFN(2, ("Scan of channel %u complete (%u)\n", 1260 ic->ic_channels[chan->nchan].ic_freq, chan->nchan)); 1261 break; 1262 1263 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1264 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1265 1266 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1267 scan->status)); 1268 1269 /* monitor mode uses scan to set the channel ... */ 1270 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 1271 sc->flags &= ~IWI_FLAG_SCANNING; 1272 ieee80211_end_scan(ic); 1273 } else 1274 iwi_set_chan(sc, ic->ic_ibss_chan); 1275 break; 1276 1277 case IWI_NOTIF_TYPE_AUTHENTICATION: 1278 auth = (struct iwi_notif_authentication *)(notif + 1); 1279 1280 DPRINTFN(2, ("Authentication (%u)\n", auth->state)); 1281 1282 switch (auth->state) { 1283 case IWI_AUTH_SUCCESS: 1284 ieee80211_node_authorize(ic->ic_bss); 1285 ieee80211_new_state(ic, IEEE80211_S_ASSOC, -1); 1286 break; 1287 1288 case IWI_AUTH_FAIL: 1289 break; 1290 1291 default: 1292 aprint_error_dev(sc->sc_dev, 1293 "unknown authentication state %u\n", auth->state); 1294 } 1295 break; 1296 1297 case IWI_NOTIF_TYPE_ASSOCIATION: 1298 assoc = (struct iwi_notif_association *)(notif + 1); 1299 1300 DPRINTFN(2, ("Association (%u, %u)\n", assoc->state, 1301 assoc->status)); 1302 1303 switch (assoc->state) { 1304 case IWI_AUTH_SUCCESS: 1305 /* re-association, do nothing */ 1306 break; 1307 1308 case IWI_ASSOC_SUCCESS: 1309 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 1310 break; 1311 1312 case IWI_ASSOC_FAIL: 1313 ieee80211_begin_scan(ic, 1); 1314 break; 1315 1316 default: 1317 aprint_error_dev(sc->sc_dev, 1318 "unknown association state %u\n", assoc->state); 1319 } 1320 break; 1321 1322 case IWI_NOTIF_TYPE_BEACON: 1323 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1324 1325 if (beacon->state == IWI_BEACON_MISS) { 1326 DPRINTFN(5, ("%s: %u beacon(s) missed\n", 1327 device_xname(sc->sc_dev), le32toh(beacon->number))); 1328 } 1329 break; 1330 1331 case IWI_NOTIF_TYPE_FRAG_LENGTH: 1332 case IWI_NOTIF_TYPE_LINK_QUALITY: 1333 case IWI_NOTIF_TYPE_TGI_TX_KEY: 1334 case IWI_NOTIF_TYPE_CALIBRATION: 1335 case IWI_NOTIF_TYPE_NOISE: 1336 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1337 break; 1338 1339 default: 1340 DPRINTF(("%s: unknown notification type %u flags 0x%x len %d\n", 1341 device_xname(sc->sc_dev), notif->type, notif->flags, 1342 le16toh(notif->len))); 1343 } 1344 } 1345 1346 static void 1347 iwi_cmd_intr(struct iwi_softc *sc) 1348 { 1349 uint32_t hw; 1350 1351 hw = CSR_READ_4(sc, IWI_CSR_CMD_RIDX); 1352 1353 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1354 sc->cmdq.next * IWI_CMD_DESC_SIZE, IWI_CMD_DESC_SIZE, 1355 BUS_DMASYNC_POSTWRITE); 1356 1357 wakeup(&sc->cmdq.desc[sc->cmdq.next]); 1358 1359 sc->cmdq.next = (sc->cmdq.next + 1) % sc->cmdq.count; 1360 1361 if (--sc->cmdq.queued > 0) { 1362 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, (sc->cmdq.next + 1) % sc->cmdq.count); 1363 } 1364 } 1365 1366 static void 1367 iwi_rx_intr(struct iwi_softc *sc) 1368 { 1369 struct iwi_rx_data *data; 1370 struct iwi_hdr *hdr; 1371 uint32_t hw; 1372 1373 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1374 1375 for (; sc->rxq.cur != hw;) { 1376 data = &sc->rxq.data[sc->rxq.cur]; 1377 1378 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1379 data->map->dm_mapsize, BUS_DMASYNC_POSTREAD); 1380 1381 hdr = mtod(data->m, struct iwi_hdr *); 1382 1383 switch (hdr->type) { 1384 case IWI_HDR_TYPE_FRAME: 1385 iwi_frame_intr(sc, data, sc->rxq.cur, 1386 (struct iwi_frame *)(hdr + 1)); 1387 break; 1388 1389 case IWI_HDR_TYPE_NOTIF: 1390 iwi_notification_intr(sc, 1391 (struct iwi_notif *)(hdr + 1)); 1392 break; 1393 1394 default: 1395 aprint_error_dev(sc->sc_dev, "unknown hdr type %u\n", 1396 hdr->type); 1397 } 1398 1399 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1400 data->map->dm_mapsize, BUS_DMASYNC_PREREAD); 1401 1402 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1403 1404 sc->rxq.cur = (sc->rxq.cur + 1) % sc->rxq.count; 1405 } 1406 1407 /* Tell the firmware what we have processed */ 1408 hw = (hw == 0) ? sc->rxq.count - 1 : hw - 1; 1409 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1410 } 1411 1412 static void 1413 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1414 { 1415 struct ifnet *ifp = &sc->sc_if; 1416 struct iwi_tx_data *data; 1417 uint32_t hw; 1418 1419 hw = CSR_READ_4(sc, txq->csr_ridx); 1420 1421 for (; txq->next != hw;) { 1422 data = &txq->data[txq->next]; 1423 1424 bus_dmamap_sync(sc->sc_dmat, data->map, 0, 1425 data->map->dm_mapsize, BUS_DMASYNC_POSTWRITE); 1426 bus_dmamap_unload(sc->sc_dmat, data->map); 1427 m_freem(data->m); 1428 data->m = NULL; 1429 ieee80211_free_node(data->ni); 1430 data->ni = NULL; 1431 1432 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1433 1434 ifp->if_opackets++; 1435 1436 txq->queued--; 1437 txq->next = (txq->next + 1) % txq->count; 1438 } 1439 1440 sc->sc_tx_timer = 0; 1441 ifp->if_flags &= ~IFF_OACTIVE; 1442 1443 /* Call start() since some buffer descriptors have been released */ 1444 (*ifp->if_start)(ifp); 1445 } 1446 1447 static int 1448 iwi_intr(void *arg) 1449 { 1450 struct iwi_softc *sc = arg; 1451 uint32_t r; 1452 1453 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) 1454 return 0; 1455 1456 /* Acknowledge interrupts */ 1457 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1458 1459 if (r & IWI_INTR_FATAL_ERROR) { 1460 aprint_error_dev(sc->sc_dev, "fatal error\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_FW_INITED) { 1467 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1468 wakeup(sc); 1469 } 1470 1471 if (r & IWI_INTR_RADIO_OFF) { 1472 DPRINTF(("radio transmitter off\n")); 1473 sc->sc_ic.ic_ifp->if_flags &= ~IFF_UP; 1474 iwi_stop(&sc->sc_if, 1); 1475 return (1); 1476 } 1477 1478 if (r & IWI_INTR_CMD_DONE) 1479 iwi_cmd_intr(sc); 1480 1481 if (r & IWI_INTR_TX1_DONE) 1482 iwi_tx_intr(sc, &sc->txq[0]); 1483 1484 if (r & IWI_INTR_TX2_DONE) 1485 iwi_tx_intr(sc, &sc->txq[1]); 1486 1487 if (r & IWI_INTR_TX3_DONE) 1488 iwi_tx_intr(sc, &sc->txq[2]); 1489 1490 if (r & IWI_INTR_TX4_DONE) 1491 iwi_tx_intr(sc, &sc->txq[3]); 1492 1493 if (r & IWI_INTR_RX_DONE) 1494 iwi_rx_intr(sc); 1495 1496 if (r & IWI_INTR_PARITY_ERROR) 1497 aprint_error_dev(sc->sc_dev, "parity error\n"); 1498 1499 return 1; 1500 } 1501 1502 static int 1503 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len, 1504 int async) 1505 { 1506 struct iwi_cmd_desc *desc; 1507 1508 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1509 1510 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1511 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1512 desc->type = type; 1513 desc->len = len; 1514 memcpy(desc->data, data, len); 1515 1516 bus_dmamap_sync(sc->sc_dmat, sc->cmdq.desc_map, 1517 sc->cmdq.cur * IWI_CMD_DESC_SIZE, 1518 IWI_CMD_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1519 1520 DPRINTFN(2, ("sending command idx=%u type=%u len=%u async=%d\n", 1521 sc->cmdq.cur, type, len, async)); 1522 1523 sc->cmdq.cur = (sc->cmdq.cur + 1) % sc->cmdq.count; 1524 1525 if (++sc->cmdq.queued == 1) 1526 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1527 1528 return async ? 0 : tsleep(desc, 0, "iwicmd", hz); 1529 } 1530 1531 static void 1532 iwi_write_ibssnode(struct iwi_softc *sc, const struct iwi_node *in) 1533 { 1534 struct iwi_ibssnode node; 1535 1536 /* write node information into NIC memory */ 1537 memset(&node, 0, sizeof node); 1538 IEEE80211_ADDR_COPY(node.bssid, in->in_node.ni_macaddr); 1539 1540 CSR_WRITE_REGION_1(sc, 1541 IWI_CSR_NODE_BASE + in->in_station * sizeof node, 1542 (uint8_t *)&node, sizeof node); 1543 } 1544 1545 static int 1546 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1547 int ac) 1548 { 1549 struct iwi_softc *sc = ifp->if_softc; 1550 struct ieee80211com *ic = &sc->sc_ic; 1551 struct iwi_node *in = (struct iwi_node *)ni; 1552 struct ieee80211_frame *wh; 1553 struct ieee80211_key *k; 1554 const struct chanAccParams *cap; 1555 struct iwi_tx_ring *txq = &sc->txq[ac]; 1556 struct iwi_tx_data *data; 1557 struct iwi_tx_desc *desc; 1558 struct mbuf *mnew; 1559 int error, hdrlen, i, noack = 0; 1560 1561 wh = mtod(m0, struct ieee80211_frame *); 1562 1563 if (wh->i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) { 1564 hdrlen = sizeof (struct ieee80211_qosframe); 1565 cap = &ic->ic_wme.wme_chanParams; 1566 noack = cap->cap_wmeParams[ac].wmep_noackPolicy; 1567 } else 1568 hdrlen = sizeof (struct ieee80211_frame); 1569 1570 /* 1571 * This is only used in IBSS mode where the firmware expect an index 1572 * in a h/w table instead of a destination address. 1573 */ 1574 if (ic->ic_opmode == IEEE80211_M_IBSS && in->in_station == -1) { 1575 in->in_station = iwi_alloc_unr(sc); 1576 1577 if (in->in_station == -1) { /* h/w table is full */ 1578 m_freem(m0); 1579 ieee80211_free_node(ni); 1580 ifp->if_oerrors++; 1581 return 0; 1582 } 1583 iwi_write_ibssnode(sc, in); 1584 } 1585 1586 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1587 k = ieee80211_crypto_encap(ic, ni, m0); 1588 if (k == NULL) { 1589 m_freem(m0); 1590 return ENOBUFS; 1591 } 1592 1593 /* packet header may have moved, reset our local pointer */ 1594 wh = mtod(m0, struct ieee80211_frame *); 1595 } 1596 1597 #if NBPFILTER > 0 1598 if (sc->sc_drvbpf != NULL) { 1599 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1600 1601 tap->wt_flags = 0; 1602 tap->wt_chan_freq = htole16(ic->ic_ibss_chan->ic_freq); 1603 tap->wt_chan_flags = htole16(ic->ic_ibss_chan->ic_flags); 1604 1605 bpf_mtap2(sc->sc_drvbpf, tap, sc->sc_txtap_len, m0); 1606 } 1607 #endif 1608 1609 data = &txq->data[txq->cur]; 1610 desc = &txq->desc[txq->cur]; 1611 1612 /* save and trim IEEE802.11 header */ 1613 m_copydata(m0, 0, hdrlen, (void *)&desc->wh); 1614 m_adj(m0, hdrlen); 1615 1616 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1617 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1618 if (error != 0 && error != EFBIG) { 1619 aprint_error_dev(sc->sc_dev, "could not map mbuf (error %d)\n", 1620 error); 1621 m_freem(m0); 1622 return error; 1623 } 1624 if (error != 0) { 1625 /* too many fragments, linearize */ 1626 1627 MGETHDR(mnew, M_DONTWAIT, MT_DATA); 1628 if (mnew == NULL) { 1629 m_freem(m0); 1630 return ENOMEM; 1631 } 1632 1633 M_COPY_PKTHDR(mnew, m0); 1634 1635 /* If the data won't fit in the header, get a cluster */ 1636 if (m0->m_pkthdr.len > MHLEN) { 1637 MCLGET(mnew, M_DONTWAIT); 1638 if (!(mnew->m_flags & M_EXT)) { 1639 m_freem(m0); 1640 m_freem(mnew); 1641 return ENOMEM; 1642 } 1643 } 1644 m_copydata(m0, 0, m0->m_pkthdr.len, mtod(mnew, void *)); 1645 m_freem(m0); 1646 mnew->m_len = mnew->m_pkthdr.len; 1647 m0 = mnew; 1648 1649 error = bus_dmamap_load_mbuf(sc->sc_dmat, data->map, m0, 1650 BUS_DMA_WRITE | BUS_DMA_NOWAIT); 1651 if (error != 0) { 1652 aprint_error_dev(sc->sc_dev, 1653 "could not map mbuf (error %d)\n", error); 1654 m_freem(m0); 1655 return error; 1656 } 1657 } 1658 1659 data->m = m0; 1660 data->ni = ni; 1661 1662 desc->hdr.type = IWI_HDR_TYPE_DATA; 1663 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1664 desc->station = 1665 (ic->ic_opmode == IEEE80211_M_IBSS) ? in->in_station : 0; 1666 desc->cmd = IWI_DATA_CMD_TX; 1667 desc->len = htole16(m0->m_pkthdr.len); 1668 desc->flags = 0; 1669 desc->xflags = 0; 1670 1671 if (!noack && !IEEE80211_IS_MULTICAST(desc->wh.i_addr1)) 1672 desc->flags |= IWI_DATA_FLAG_NEED_ACK; 1673 1674 #if 0 1675 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 1676 desc->wh.i_fc[1] |= IEEE80211_FC1_WEP; 1677 desc->wep_txkey = ic->ic_crypto.cs_def_txkey; 1678 } else 1679 #endif 1680 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1681 1682 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 1683 desc->flags |= IWI_DATA_FLAG_SHPREAMBLE; 1684 1685 if (desc->wh.i_fc[0] & IEEE80211_FC0_SUBTYPE_QOS) 1686 desc->xflags |= IWI_DATA_XFLAG_QOS; 1687 1688 if (ic->ic_curmode == IEEE80211_MODE_11B) 1689 desc->xflags |= IWI_DATA_XFLAG_CCK; 1690 1691 desc->nseg = htole32(data->map->dm_nsegs); 1692 for (i = 0; i < data->map->dm_nsegs; i++) { 1693 desc->seg_addr[i] = htole32(data->map->dm_segs[i].ds_addr); 1694 desc->seg_len[i] = htole16(data->map->dm_segs[i].ds_len); 1695 } 1696 1697 bus_dmamap_sync(sc->sc_dmat, txq->desc_map, 1698 txq->cur * IWI_TX_DESC_SIZE, 1699 IWI_TX_DESC_SIZE, BUS_DMASYNC_PREWRITE); 1700 1701 bus_dmamap_sync(sc->sc_dmat, data->map, 0, data->map->dm_mapsize, 1702 BUS_DMASYNC_PREWRITE); 1703 1704 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1705 ac, txq->cur, le16toh(desc->len), le32toh(desc->nseg))); 1706 1707 /* Inform firmware about this new packet */ 1708 txq->queued++; 1709 txq->cur = (txq->cur + 1) % txq->count; 1710 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1711 1712 return 0; 1713 } 1714 1715 static void 1716 iwi_start(struct ifnet *ifp) 1717 { 1718 struct iwi_softc *sc = ifp->if_softc; 1719 struct ieee80211com *ic = &sc->sc_ic; 1720 struct mbuf *m0; 1721 struct ether_header *eh; 1722 struct ieee80211_node *ni; 1723 int ac; 1724 1725 if (ic->ic_state != IEEE80211_S_RUN) 1726 return; 1727 1728 for (;;) { 1729 IF_DEQUEUE(&ifp->if_snd, m0); 1730 if (m0 == NULL) 1731 break; 1732 1733 if (m0->m_len < sizeof (struct ether_header) && 1734 (m0 = m_pullup(m0, sizeof (struct ether_header))) == NULL) { 1735 ifp->if_oerrors++; 1736 continue; 1737 } 1738 1739 eh = mtod(m0, struct ether_header *); 1740 ni = ieee80211_find_txnode(ic, eh->ether_dhost); 1741 if (ni == NULL) { 1742 m_freem(m0); 1743 ifp->if_oerrors++; 1744 continue; 1745 } 1746 1747 /* classify mbuf so we can find which tx ring to use */ 1748 if (ieee80211_classify(ic, m0, ni) != 0) { 1749 m_freem(m0); 1750 ieee80211_free_node(ni); 1751 ifp->if_oerrors++; 1752 continue; 1753 } 1754 1755 /* no QoS encapsulation for EAPOL frames */ 1756 ac = (eh->ether_type != htons(ETHERTYPE_PAE)) ? 1757 M_WME_GETAC(m0) : WME_AC_BE; 1758 1759 if (sc->txq[ac].queued > sc->txq[ac].count - 8) { 1760 /* there is no place left in this ring */ 1761 IF_PREPEND(&ifp->if_snd, m0); 1762 ifp->if_flags |= IFF_OACTIVE; 1763 break; 1764 } 1765 1766 #if NBPFILTER > 0 1767 if (ifp->if_bpf != NULL) 1768 bpf_mtap(ifp->if_bpf, m0); 1769 #endif 1770 1771 m0 = ieee80211_encap(ic, m0, ni); 1772 if (m0 == NULL) { 1773 ieee80211_free_node(ni); 1774 ifp->if_oerrors++; 1775 continue; 1776 } 1777 1778 #if NBPFILTER > 0 1779 if (ic->ic_rawbpf != NULL) 1780 bpf_mtap(ic->ic_rawbpf, m0); 1781 #endif 1782 1783 if (iwi_tx_start(ifp, m0, ni, ac) != 0) { 1784 ieee80211_free_node(ni); 1785 ifp->if_oerrors++; 1786 break; 1787 } 1788 1789 /* start watchdog timer */ 1790 sc->sc_tx_timer = 5; 1791 ifp->if_timer = 1; 1792 } 1793 } 1794 1795 static void 1796 iwi_watchdog(struct ifnet *ifp) 1797 { 1798 struct iwi_softc *sc = ifp->if_softc; 1799 1800 ifp->if_timer = 0; 1801 1802 if (sc->sc_tx_timer > 0) { 1803 if (--sc->sc_tx_timer == 0) { 1804 aprint_error_dev(sc->sc_dev, "device timeout\n"); 1805 ifp->if_oerrors++; 1806 ifp->if_flags &= ~IFF_UP; 1807 iwi_stop(ifp, 1); 1808 return; 1809 } 1810 ifp->if_timer = 1; 1811 } 1812 1813 ieee80211_watchdog(&sc->sc_ic); 1814 } 1815 1816 static int 1817 iwi_get_table0(struct iwi_softc *sc, uint32_t *tbl) 1818 { 1819 uint32_t size, buf[128]; 1820 1821 if (!(sc->flags & IWI_FLAG_FW_INITED)) { 1822 memset(buf, 0, sizeof buf); 1823 return copyout(buf, tbl, sizeof buf); 1824 } 1825 1826 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 1827 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 1828 1829 return copyout(buf, tbl, sizeof buf); 1830 } 1831 1832 static int 1833 iwi_ioctl(struct ifnet *ifp, u_long cmd, void *data) 1834 { 1835 #define IS_RUNNING(ifp) \ 1836 ((ifp->if_flags & IFF_UP) && (ifp->if_flags & IFF_RUNNING)) 1837 1838 struct iwi_softc *sc = ifp->if_softc; 1839 struct ieee80211com *ic = &sc->sc_ic; 1840 struct ifreq *ifr = (struct ifreq *)data; 1841 int s, error = 0; 1842 int val; 1843 1844 s = splnet(); 1845 1846 switch (cmd) { 1847 case SIOCSIFFLAGS: 1848 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 1849 break; 1850 if (ifp->if_flags & IFF_UP) { 1851 if (!(ifp->if_flags & IFF_RUNNING)) 1852 iwi_init(ifp); 1853 } else { 1854 if (ifp->if_flags & IFF_RUNNING) 1855 iwi_stop(ifp, 1); 1856 } 1857 break; 1858 1859 case SIOCADDMULTI: 1860 case SIOCDELMULTI: 1861 /* XXX no h/w multicast filter? --dyoung */ 1862 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1863 /* setup multicast filter, etc */ 1864 error = 0; 1865 } 1866 break; 1867 1868 case SIOCGTABLE0: 1869 error = iwi_get_table0(sc, (uint32_t *)ifr->ifr_data); 1870 break; 1871 1872 case SIOCGRADIO: 1873 val = !iwi_getrfkill(sc); 1874 error = copyout(&val, (int *)ifr->ifr_data, sizeof val); 1875 break; 1876 1877 case SIOCSIFMEDIA: 1878 if (ifr->ifr_media & IFM_IEEE80211_ADHOC) { 1879 sc->sc_fwname = "ipw2200-ibss.fw"; 1880 } else if (ifr->ifr_media & IFM_IEEE80211_MONITOR) { 1881 sc->sc_fwname = "ipw2200-sniffer.fw"; 1882 } else { 1883 sc->sc_fwname = "ipw2200-bss.fw"; 1884 } 1885 error = iwi_cache_firmware(sc); 1886 if (error) 1887 break; 1888 /* FALLTRHOUGH */ 1889 1890 default: 1891 error = ieee80211_ioctl(&sc->sc_ic, cmd, data); 1892 1893 if (error == ENETRESET) { 1894 if (IS_RUNNING(ifp) && 1895 (ic->ic_roaming != IEEE80211_ROAMING_MANUAL)) 1896 iwi_init(ifp); 1897 error = 0; 1898 } 1899 } 1900 1901 splx(s); 1902 return error; 1903 #undef IS_RUNNING 1904 } 1905 1906 static void 1907 iwi_stop_master(struct iwi_softc *sc) 1908 { 1909 int ntries; 1910 1911 /* Disable interrupts */ 1912 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 1913 1914 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 1915 for (ntries = 0; ntries < 5; ntries++) { 1916 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1917 break; 1918 DELAY(10); 1919 } 1920 if (ntries == 5) 1921 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 1922 1923 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1924 IWI_RST_PRINCETON_RESET); 1925 1926 sc->flags &= ~IWI_FLAG_FW_INITED; 1927 } 1928 1929 static int 1930 iwi_reset(struct iwi_softc *sc) 1931 { 1932 int i, ntries; 1933 1934 iwi_stop_master(sc); 1935 1936 /* Move adapter to D0 state */ 1937 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1938 IWI_CTL_INIT); 1939 1940 /* Initialize Phase-Locked Level (PLL) */ 1941 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 1942 1943 /* Wait for clock stabilization */ 1944 for (ntries = 0; ntries < 1000; ntries++) { 1945 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 1946 break; 1947 DELAY(200); 1948 } 1949 if (ntries == 1000) { 1950 aprint_error_dev(sc->sc_dev, 1951 "timeout waiting for clock stabilization\n"); 1952 return ETIMEDOUT; 1953 } 1954 1955 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1956 IWI_RST_SW_RESET); 1957 1958 DELAY(10); 1959 1960 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 1961 IWI_CTL_INIT); 1962 1963 /* Clear NIC memory */ 1964 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 1965 for (i = 0; i < 0xc000; i++) 1966 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 1967 1968 return 0; 1969 } 1970 1971 static int 1972 iwi_load_ucode(struct iwi_softc *sc, void *uc, int size) 1973 { 1974 uint16_t *w; 1975 int ntries, i; 1976 1977 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 1978 IWI_RST_STOP_MASTER); 1979 for (ntries = 0; ntries < 5; ntries++) { 1980 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 1981 break; 1982 DELAY(10); 1983 } 1984 if (ntries == 5) { 1985 aprint_error_dev(sc->sc_dev, "timeout waiting for master\n"); 1986 return ETIMEDOUT; 1987 } 1988 1989 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 1990 DELAY(5000); 1991 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 1992 ~IWI_RST_PRINCETON_RESET); 1993 DELAY(5000); 1994 MEM_WRITE_4(sc, 0x3000e0, 0); 1995 DELAY(1000); 1996 MEM_WRITE_4(sc, 0x300004, 1); 1997 DELAY(1000); 1998 MEM_WRITE_4(sc, 0x300004, 0); 1999 DELAY(1000); 2000 MEM_WRITE_1(sc, 0x200000, 0x00); 2001 MEM_WRITE_1(sc, 0x200000, 0x40); 2002 DELAY(1000); 2003 2004 /* Adapter is buggy, we must set the address for each word */ 2005 for (w = uc; size > 0; w++, size -= 2) 2006 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 2007 2008 MEM_WRITE_1(sc, 0x200000, 0x00); 2009 MEM_WRITE_1(sc, 0x200000, 0x80); 2010 2011 /* Wait until we get a response in the uc queue */ 2012 for (ntries = 0; ntries < 100; ntries++) { 2013 if (MEM_READ_1(sc, 0x200000) & 1) 2014 break; 2015 DELAY(100); 2016 } 2017 if (ntries == 100) { 2018 aprint_error_dev(sc->sc_dev, 2019 "timeout waiting for ucode to initialize\n"); 2020 return ETIMEDOUT; 2021 } 2022 2023 /* Empty the uc queue or the firmware will not initialize properly */ 2024 for (i = 0; i < 7; i++) 2025 MEM_READ_4(sc, 0x200004); 2026 2027 MEM_WRITE_1(sc, 0x200000, 0x00); 2028 2029 return 0; 2030 } 2031 2032 /* macro to handle unaligned little endian data in firmware image */ 2033 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2034 static int 2035 iwi_load_firmware(struct iwi_softc *sc, void *fw, int size) 2036 { 2037 bus_dmamap_t map; 2038 u_char *p, *end; 2039 uint32_t sentinel, ctl, sum; 2040 uint32_t cs, sl, cd, cl; 2041 int ntries, nsegs, error; 2042 int sn; 2043 2044 nsegs = atop((vaddr_t)fw+size-1) - atop((vaddr_t)fw) + 1; 2045 2046 /* Create a DMA map for the firmware image */ 2047 error = bus_dmamap_create(sc->sc_dmat, size, nsegs, size, 0, 2048 BUS_DMA_NOWAIT, &map); 2049 if (error != 0) { 2050 aprint_error_dev(sc->sc_dev, 2051 "could not create firmware DMA map\n"); 2052 map = NULL; 2053 goto fail1; 2054 } 2055 2056 error = bus_dmamap_load(sc->sc_dmat, map, fw, size, NULL, 2057 BUS_DMA_NOWAIT | BUS_DMA_WRITE); 2058 if (error != 0) { 2059 aprint_error_dev(sc->sc_dev, "could not load fw dma map(%d)\n", 2060 error); 2061 goto fail2; 2062 } 2063 2064 /* Make sure the adapter will get up-to-date values */ 2065 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_PREWRITE); 2066 2067 /* Tell the adapter where the command blocks are stored */ 2068 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2069 2070 /* 2071 * Store command blocks into adapter's internal memory using register 2072 * indirections. The adapter will read the firmware image through DMA 2073 * using information stored in command blocks. 2074 */ 2075 p = fw; 2076 end = p + size; 2077 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2078 2079 sn = 0; 2080 sl = cl = 0; 2081 cs = cd = 0; 2082 while (p < end) { 2083 if (sl == 0) { 2084 cs = map->dm_segs[sn].ds_addr; 2085 sl = map->dm_segs[sn].ds_len; 2086 sn++; 2087 } 2088 if (cl == 0) { 2089 cd = GETLE32(p); p += 4; cs += 4; sl -= 4; 2090 cl = GETLE32(p); p += 4; cs += 4; sl -= 4; 2091 } 2092 while (sl > 0 && cl > 0) { 2093 int len = min(cl, sl); 2094 2095 sl -= len; 2096 cl -= len; 2097 p += len; 2098 2099 while (len > 0) { 2100 int mlen = min(len, IWI_CB_MAXDATALEN); 2101 2102 ctl = IWI_CB_DEFAULT_CTL | mlen; 2103 sum = ctl ^ cs ^ cd; 2104 2105 /* Write a command block */ 2106 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2107 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cs); 2108 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, cd); 2109 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2110 2111 cs += mlen; 2112 cd += mlen; 2113 len -= mlen; 2114 } 2115 } 2116 } 2117 2118 /* Write a fictive final command block (sentinel) */ 2119 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2120 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2121 2122 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) & 2123 ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER)); 2124 2125 /* Tell the adapter to start processing command blocks */ 2126 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2127 2128 /* Wait until the adapter has processed all command blocks */ 2129 for (ntries = 0; ntries < 400; ntries++) { 2130 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2131 break; 2132 DELAY(100); 2133 } 2134 if (ntries == 400) { 2135 aprint_error_dev(sc->sc_dev, "timeout processing cb\n"); 2136 error = ETIMEDOUT; 2137 goto fail3; 2138 } 2139 2140 /* We're done with command blocks processing */ 2141 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2142 2143 /* Allow interrupts so we know when the firmware is inited */ 2144 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2145 2146 /* Tell the adapter to initialize the firmware */ 2147 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2148 CSR_WRITE_4(sc, IWI_CSR_CTL, CSR_READ_4(sc, IWI_CSR_CTL) | 2149 IWI_CTL_ALLOW_STANDBY); 2150 2151 /* Wait at most one second for firmware initialization to complete */ 2152 if ((error = tsleep(sc, 0, "iwiinit", hz)) != 0) { 2153 aprint_error_dev(sc->sc_dev, 2154 "timeout waiting for firmware initialization to complete\n"); 2155 goto fail3; 2156 } 2157 2158 fail3: 2159 bus_dmamap_sync(sc->sc_dmat, map, 0, size, BUS_DMASYNC_POSTWRITE); 2160 bus_dmamap_unload(sc->sc_dmat, map); 2161 fail2: 2162 if (map != NULL) 2163 bus_dmamap_destroy(sc->sc_dmat, map); 2164 2165 fail1: 2166 return error; 2167 } 2168 2169 /* 2170 * Store firmware into kernel memory so we can download it when we need to, 2171 * e.g when the adapter wakes up from suspend mode. 2172 */ 2173 static int 2174 iwi_cache_firmware(struct iwi_softc *sc) 2175 { 2176 struct iwi_firmware *kfw = &sc->fw; 2177 firmware_handle_t fwh; 2178 const struct iwi_firmware_hdr *hdr; 2179 off_t size; 2180 char *fw; 2181 int error; 2182 2183 if (iwi_accept_eula == 0) { 2184 aprint_error_dev(sc->sc_dev, 2185 "EULA not accepted; please see the iwi(4) man page.\n"); 2186 return EPERM; 2187 } 2188 2189 iwi_free_firmware(sc); 2190 error = firmware_open("if_iwi", sc->sc_fwname, &fwh); 2191 if (error != 0) { 2192 aprint_error_dev(sc->sc_dev, "firmware_open failed\n"); 2193 goto fail1; 2194 } 2195 2196 size = firmware_get_size(fwh); 2197 if (size < sizeof(struct iwi_firmware_hdr)) { 2198 aprint_error_dev(sc->sc_dev, "image '%s' has no header\n", 2199 sc->sc_fwname); 2200 error = EIO; 2201 goto fail1; 2202 } 2203 2204 sc->sc_blob = firmware_malloc(size); 2205 if (sc->sc_blob == NULL) { 2206 error = ENOMEM; 2207 firmware_close(fwh); 2208 goto fail1; 2209 } 2210 2211 error = firmware_read(fwh, 0, sc->sc_blob, size); 2212 firmware_close(fwh); 2213 if (error != 0) 2214 goto fail2; 2215 2216 2217 hdr = (const struct iwi_firmware_hdr *)sc->sc_blob; 2218 if (size < sizeof(struct iwi_firmware_hdr) + hdr->bsize + hdr->usize + hdr->fsize) { 2219 aprint_error_dev(sc->sc_dev, "image '%s' too small\n", 2220 sc->sc_fwname); 2221 error = EIO; 2222 goto fail2; 2223 } 2224 2225 hdr = (const struct iwi_firmware_hdr *)sc->sc_blob; 2226 DPRINTF(("firmware version = %d\n", le32toh(hdr->version))); 2227 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2228 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2229 aprint_error_dev(sc->sc_dev, 2230 "version for '%s' %d.%d != %d.%d\n", sc->sc_fwname, 2231 IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2232 IWI_FW_GET_MINOR(le32toh(hdr->version)), 2233 IWI_FW_REQ_MAJOR, IWI_FW_REQ_MINOR); 2234 error = EIO; 2235 goto fail2; 2236 } 2237 2238 kfw->boot_size = hdr->bsize; 2239 kfw->ucode_size = hdr->usize; 2240 kfw->main_size = hdr->fsize; 2241 2242 fw = sc->sc_blob + sizeof(struct iwi_firmware_hdr); 2243 kfw->boot = fw; 2244 fw += kfw->boot_size; 2245 kfw->ucode = fw; 2246 fw += kfw->ucode_size; 2247 kfw->main = fw; 2248 2249 DPRINTF(("Firmware cached: boot %p, ucode %p, main %p\n", 2250 kfw->boot, kfw->ucode, kfw->main)); 2251 DPRINTF(("Firmware cached: boot %u, ucode %u, main %u\n", 2252 kfw->boot_size, kfw->ucode_size, kfw->main_size)); 2253 2254 sc->flags |= IWI_FLAG_FW_CACHED; 2255 2256 return 0; 2257 2258 2259 fail2: firmware_free(sc->sc_blob, 0); 2260 fail1: 2261 return error; 2262 } 2263 2264 static void 2265 iwi_free_firmware(struct iwi_softc *sc) 2266 { 2267 2268 if (!(sc->flags & IWI_FLAG_FW_CACHED)) 2269 return; 2270 2271 firmware_free(sc->sc_blob, 0); 2272 2273 sc->flags &= ~IWI_FLAG_FW_CACHED; 2274 } 2275 2276 static int 2277 iwi_config(struct iwi_softc *sc) 2278 { 2279 struct ieee80211com *ic = &sc->sc_ic; 2280 struct ifnet *ifp = &sc->sc_if; 2281 struct iwi_configuration config; 2282 struct iwi_rateset rs; 2283 struct iwi_txpower power; 2284 struct ieee80211_key *wk; 2285 struct iwi_wep_key wepkey; 2286 uint32_t data; 2287 int error, nchan, i; 2288 2289 IEEE80211_ADDR_COPY(ic->ic_myaddr, CLLADDR(ifp->if_sadl)); 2290 DPRINTF(("Setting MAC address to %s\n", ether_sprintf(ic->ic_myaddr))); 2291 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, ic->ic_myaddr, 2292 IEEE80211_ADDR_LEN, 0); 2293 if (error != 0) 2294 return error; 2295 2296 memset(&config, 0, sizeof config); 2297 config.bluetooth_coexistence = sc->bluetooth; 2298 config.antenna = sc->antenna; 2299 config.silence_threshold = 0x1e; 2300 config.multicast_enabled = 1; 2301 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2302 config.disable_unicast_decryption = 1; 2303 config.disable_multicast_decryption = 1; 2304 DPRINTF(("Configuring adapter\n")); 2305 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, sizeof config, 2306 0); 2307 if (error != 0) 2308 return error; 2309 2310 data = htole32(IWI_POWER_MODE_CAM); 2311 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2312 error = iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data, 0); 2313 if (error != 0) 2314 return error; 2315 2316 data = htole32(ic->ic_rtsthreshold); 2317 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2318 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data, 0); 2319 if (error != 0) 2320 return error; 2321 2322 data = htole32(ic->ic_fragthreshold); 2323 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2324 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data, 0); 2325 if (error != 0) 2326 return error; 2327 2328 /* 2329 * Set default Tx power for 802.11b/g and 802.11a channels. 2330 */ 2331 nchan = 0; 2332 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2333 if (!IEEE80211_IS_CHAN_2GHZ(&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 power.mode = IWI_MODE_11G; 2342 DPRINTF(("Setting .11g channels tx power\n")); 2343 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 2344 if (error != 0) 2345 return error; 2346 2347 power.mode = IWI_MODE_11B; 2348 DPRINTF(("Setting .11b channels tx power\n")); 2349 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 0); 2350 if (error != 0) 2351 return error; 2352 2353 nchan = 0; 2354 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2355 if (!IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i])) 2356 continue; 2357 power.chan[nchan].chan = i; 2358 power.chan[nchan].power = IWI_TXPOWER_MAX; 2359 nchan++; 2360 } 2361 power.nchan = nchan; 2362 2363 if (nchan > 0) { /* 2915ABG only */ 2364 power.mode = IWI_MODE_11A; 2365 DPRINTF(("Setting .11a channels tx power\n")); 2366 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power, 2367 0); 2368 if (error != 0) 2369 return error; 2370 } 2371 2372 rs.mode = IWI_MODE_11G; 2373 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2374 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2375 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2376 rs.nrates); 2377 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2378 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2379 if (error != 0) 2380 return error; 2381 2382 rs.mode = IWI_MODE_11A; 2383 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2384 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2385 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2386 rs.nrates); 2387 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2388 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 0); 2389 if (error != 0) 2390 return error; 2391 2392 /* if we have a desired ESSID, set it now */ 2393 if (ic->ic_des_esslen != 0) { 2394 #ifdef IWI_DEBUG 2395 if (iwi_debug > 0) { 2396 printf("Setting desired ESSID to "); 2397 ieee80211_print_essid(ic->ic_des_essid, 2398 ic->ic_des_esslen); 2399 printf("\n"); 2400 } 2401 #endif 2402 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ic->ic_des_essid, 2403 ic->ic_des_esslen, 0); 2404 if (error != 0) 2405 return error; 2406 } 2407 2408 data = htole32(arc4random()); 2409 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2410 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data, 0); 2411 if (error != 0) 2412 return error; 2413 2414 if (ic->ic_flags & IEEE80211_F_PRIVACY) { 2415 /* XXX iwi_setwepkeys? */ 2416 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2417 wk = &ic->ic_crypto.cs_nw_keys[i]; 2418 2419 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2420 wepkey.idx = i; 2421 wepkey.len = wk->wk_keylen; 2422 memset(wepkey.key, 0, sizeof wepkey.key); 2423 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2424 DPRINTF(("Setting wep key index %u len %u\n", 2425 wepkey.idx, wepkey.len)); 2426 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2427 sizeof wepkey, 0); 2428 if (error != 0) 2429 return error; 2430 } 2431 } 2432 2433 /* Enable adapter */ 2434 DPRINTF(("Enabling adapter\n")); 2435 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0, 0); 2436 } 2437 2438 static int 2439 iwi_set_chan(struct iwi_softc *sc, struct ieee80211_channel *chan) 2440 { 2441 struct ieee80211com *ic = &sc->sc_ic; 2442 struct iwi_scan_v2 scan; 2443 2444 (void)memset(&scan, 0, sizeof scan); 2445 2446 scan.dwelltime[IWI_SCAN_TYPE_PASSIVE] = htole16(2000); 2447 scan.channels[0] = 1 | 2448 (IEEE80211_IS_CHAN_5GHZ(chan) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ); 2449 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2450 iwi_scan_type_set(scan, 1, IWI_SCAN_TYPE_PASSIVE); 2451 2452 DPRINTF(("Setting channel to %u\n", ieee80211_chan2ieee(ic, chan))); 2453 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2454 } 2455 2456 static int 2457 iwi_scan(struct iwi_softc *sc) 2458 { 2459 struct ieee80211com *ic = &sc->sc_ic; 2460 struct iwi_scan_v2 scan; 2461 uint32_t type; 2462 uint8_t *p; 2463 int i, count, idx; 2464 2465 (void)memset(&scan, 0, sizeof scan); 2466 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BROADCAST] = 2467 htole16(sc->dwelltime); 2468 scan.dwelltime[IWI_SCAN_TYPE_ACTIVE_BDIRECT] = 2469 htole16(sc->dwelltime); 2470 2471 /* tell the firmware about the desired essid */ 2472 if (ic->ic_des_esslen) { 2473 int error; 2474 2475 DPRINTF(("%s: Setting adapter desired ESSID to %s\n", 2476 __func__, ic->ic_des_essid)); 2477 2478 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, 2479 ic->ic_des_essid, ic->ic_des_esslen, 1); 2480 if (error) 2481 return error; 2482 2483 type = IWI_SCAN_TYPE_ACTIVE_BDIRECT; 2484 } else { 2485 type = IWI_SCAN_TYPE_ACTIVE_BROADCAST; 2486 } 2487 2488 p = &scan.channels[0]; 2489 count = idx = 0; 2490 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2491 if (IEEE80211_IS_CHAN_5GHZ(&ic->ic_channels[i]) && 2492 isset(ic->ic_chan_active, i)) { 2493 *++p = i; 2494 count++; 2495 idx++; 2496 iwi_scan_type_set(scan, idx, type); 2497 } 2498 } 2499 if (count) { 2500 *(p - count) = IWI_CHAN_5GHZ | count; 2501 p++; 2502 } 2503 2504 count = 0; 2505 for (i = 0; i <= IEEE80211_CHAN_MAX; i++) { 2506 if (IEEE80211_IS_CHAN_2GHZ(&ic->ic_channels[i]) && 2507 isset(ic->ic_chan_active, i)) { 2508 *++p = i; 2509 count++; 2510 idx++; 2511 iwi_scan_type_set(scan, idx, type); 2512 } 2513 } 2514 *(p - count) = IWI_CHAN_2GHZ | count; 2515 2516 DPRINTF(("Start scanning\n")); 2517 return iwi_cmd(sc, IWI_CMD_SCAN_V2, &scan, sizeof scan, 1); 2518 } 2519 2520 static int 2521 iwi_auth_and_assoc(struct iwi_softc *sc) 2522 { 2523 struct ieee80211com *ic = &sc->sc_ic; 2524 struct ieee80211_node *ni = ic->ic_bss; 2525 struct ifnet *ifp = &sc->sc_if; 2526 struct ieee80211_wme_info wme; 2527 struct iwi_configuration config; 2528 struct iwi_associate assoc; 2529 struct iwi_rateset rs; 2530 uint16_t capinfo; 2531 uint32_t data; 2532 int error; 2533 2534 memset(&config, 0, sizeof config); 2535 config.bluetooth_coexistence = sc->bluetooth; 2536 config.antenna = sc->antenna; 2537 config.multicast_enabled = 1; 2538 config.silence_threshold = 0x1e; 2539 if (ic->ic_curmode == IEEE80211_MODE_11G) 2540 config.use_protection = 1; 2541 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2542 config.disable_unicast_decryption = 1; 2543 config.disable_multicast_decryption = 1; 2544 2545 DPRINTF(("Configuring adapter\n")); 2546 error = iwi_cmd(sc, IWI_CMD_SET_CONFIGURATION, &config, 2547 sizeof config, 1); 2548 if (error != 0) 2549 return error; 2550 2551 #ifdef IWI_DEBUG 2552 if (iwi_debug > 0) { 2553 aprint_debug_dev(sc->sc_dev, "Setting ESSID to "); 2554 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2555 aprint_debug("\n"); 2556 } 2557 #endif 2558 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen, 1); 2559 if (error != 0) 2560 return error; 2561 2562 /* the rate set has already been "negotiated" */ 2563 rs.mode = IEEE80211_IS_CHAN_5GHZ(ni->ni_chan) ? IWI_MODE_11A : 2564 IWI_MODE_11G; 2565 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2566 rs.nrates = ni->ni_rates.rs_nrates; 2567 2568 if (rs.nrates > IWI_RATESET_SIZE) { 2569 DPRINTF(("Truncating negotiated rate set from %u\n", 2570 rs.nrates)); 2571 rs.nrates = IWI_RATESET_SIZE; 2572 } 2573 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2574 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2575 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs, 1); 2576 if (error != 0) 2577 return error; 2578 2579 if ((ic->ic_flags & IEEE80211_F_WME) && ni->ni_wme_ie != NULL) { 2580 wme.wme_id = IEEE80211_ELEMID_VENDOR; 2581 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 2582 wme.wme_oui[0] = 0x00; 2583 wme.wme_oui[1] = 0x50; 2584 wme.wme_oui[2] = 0xf2; 2585 wme.wme_type = WME_OUI_TYPE; 2586 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 2587 wme.wme_version = WME_VERSION; 2588 wme.wme_info = 0; 2589 2590 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 2591 error = iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme, 1); 2592 if (error != 0) 2593 return error; 2594 } 2595 2596 if (ic->ic_opt_ie != NULL) { 2597 DPRINTF(("Setting optional IE (len=%u)\n", ic->ic_opt_ie_len)); 2598 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ic->ic_opt_ie, 2599 ic->ic_opt_ie_len, 1); 2600 if (error != 0) 2601 return error; 2602 } 2603 data = htole32(ni->ni_rssi); 2604 DPRINTF(("Setting sensitivity to %d\n", (int8_t)ni->ni_rssi)); 2605 error = iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &data, sizeof data, 1); 2606 if (error != 0) 2607 return error; 2608 2609 memset(&assoc, 0, sizeof assoc); 2610 if (IEEE80211_IS_CHAN_A(ni->ni_chan)) 2611 assoc.mode = IWI_MODE_11A; 2612 else if (IEEE80211_IS_CHAN_G(ni->ni_chan)) 2613 assoc.mode = IWI_MODE_11G; 2614 else if (IEEE80211_IS_CHAN_B(ni->ni_chan)) 2615 assoc.mode = IWI_MODE_11B; 2616 2617 assoc.chan = ieee80211_chan2ieee(ic, ni->ni_chan); 2618 2619 if (ni->ni_authmode == IEEE80211_AUTH_SHARED) 2620 assoc.auth = (ic->ic_crypto.cs_def_txkey << 4) | IWI_AUTH_SHARED; 2621 2622 if (ic->ic_flags & IEEE80211_F_SHPREAMBLE) 2623 assoc.plen = IWI_ASSOC_SHPREAMBLE; 2624 2625 if ((ic->ic_flags & IEEE80211_F_WME) && ni->ni_wme_ie != NULL) 2626 assoc.policy |= htole16(IWI_POLICY_WME); 2627 if (ic->ic_flags & IEEE80211_F_WPA) 2628 assoc.policy |= htole16(IWI_POLICY_WPA); 2629 if (ic->ic_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2630 assoc.type = IWI_HC_IBSS_START; 2631 else 2632 assoc.type = IWI_HC_ASSOC; 2633 memcpy(assoc.tstamp, ni->ni_tstamp.data, 8); 2634 2635 if (ic->ic_opmode == IEEE80211_M_IBSS) 2636 capinfo = IEEE80211_CAPINFO_IBSS; 2637 else 2638 capinfo = IEEE80211_CAPINFO_ESS; 2639 if (ic->ic_flags & IEEE80211_F_PRIVACY) 2640 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2641 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2642 IEEE80211_IS_CHAN_2GHZ(ni->ni_chan)) 2643 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2644 if (ic->ic_flags & IEEE80211_F_SHSLOT) 2645 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2646 assoc.capinfo = htole16(capinfo); 2647 2648 assoc.lintval = htole16(ic->ic_lintval); 2649 assoc.intval = htole16(ni->ni_intval); 2650 IEEE80211_ADDR_COPY(assoc.bssid, ni->ni_bssid); 2651 if (ic->ic_opmode == IEEE80211_M_IBSS) 2652 IEEE80211_ADDR_COPY(assoc.dst, ifp->if_broadcastaddr); 2653 else 2654 IEEE80211_ADDR_COPY(assoc.dst, ni->ni_bssid); 2655 2656 DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x " 2657 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2658 assoc.type == IWI_HC_IBSS_START ? "Start" : "Join", 2659 ether_sprintf(assoc.bssid), ether_sprintf(assoc.dst), 2660 assoc.chan, le16toh(assoc.policy), assoc.auth, 2661 le16toh(assoc.capinfo), le16toh(assoc.lintval), 2662 le16toh(assoc.intval))); 2663 2664 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, &assoc, sizeof assoc, 1); 2665 } 2666 2667 static int 2668 iwi_init(struct ifnet *ifp) 2669 { 2670 struct iwi_softc *sc = ifp->if_softc; 2671 struct ieee80211com *ic = &sc->sc_ic; 2672 struct iwi_firmware *fw = &sc->fw; 2673 int i, error; 2674 2675 /* exit immediately if firmware has not been ioctl'd */ 2676 if (!(sc->flags & IWI_FLAG_FW_CACHED)) { 2677 if ((error = iwi_cache_firmware(sc)) != 0) { 2678 aprint_error_dev(sc->sc_dev, 2679 "could not cache the firmware\n"); 2680 goto fail; 2681 } 2682 } 2683 2684 iwi_stop(ifp, 0); 2685 2686 if ((error = iwi_reset(sc)) != 0) { 2687 aprint_error_dev(sc->sc_dev, "could not reset adapter\n"); 2688 goto fail; 2689 } 2690 2691 if ((error = iwi_load_firmware(sc, fw->boot, fw->boot_size)) != 0) { 2692 aprint_error_dev(sc->sc_dev, "could not load boot firmware\n"); 2693 goto fail; 2694 } 2695 2696 if ((error = iwi_load_ucode(sc, fw->ucode, fw->ucode_size)) != 0) { 2697 aprint_error_dev(sc->sc_dev, "could not load microcode\n"); 2698 goto fail; 2699 } 2700 2701 iwi_stop_master(sc); 2702 2703 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.desc_map->dm_segs[0].ds_addr); 2704 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 2705 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 2706 2707 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].desc_map->dm_segs[0].ds_addr); 2708 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 2709 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 2710 2711 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].desc_map->dm_segs[0].ds_addr); 2712 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 2713 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 2714 2715 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].desc_map->dm_segs[0].ds_addr); 2716 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 2717 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 2718 2719 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].desc_map->dm_segs[0].ds_addr); 2720 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 2721 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 2722 2723 for (i = 0; i < sc->rxq.count; i++) 2724 CSR_WRITE_4(sc, IWI_CSR_RX_BASE + i * 4, 2725 sc->rxq.data[i].map->dm_segs[0].ds_addr); 2726 2727 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count -1); 2728 2729 if ((error = iwi_load_firmware(sc, fw->main, fw->main_size)) != 0) { 2730 aprint_error_dev(sc->sc_dev, "could not load main firmware\n"); 2731 goto fail; 2732 } 2733 2734 sc->flags |= IWI_FLAG_FW_INITED; 2735 2736 if ((error = iwi_config(sc)) != 0) { 2737 aprint_error_dev(sc->sc_dev, "device configuration failed\n"); 2738 goto fail; 2739 } 2740 2741 ic->ic_state = IEEE80211_S_INIT; 2742 2743 ifp->if_flags &= ~IFF_OACTIVE; 2744 ifp->if_flags |= IFF_RUNNING; 2745 2746 if (ic->ic_opmode != IEEE80211_M_MONITOR) { 2747 if (ic->ic_roaming != IEEE80211_ROAMING_MANUAL) 2748 ieee80211_new_state(ic, IEEE80211_S_SCAN, -1); 2749 } else 2750 ieee80211_new_state(ic, IEEE80211_S_RUN, -1); 2751 2752 return 0; 2753 2754 fail: ifp->if_flags &= ~IFF_UP; 2755 iwi_stop(ifp, 0); 2756 2757 return error; 2758 } 2759 2760 2761 /* 2762 * Return whether or not the radio is enabled in hardware 2763 * (i.e. the rfkill switch is "off"). 2764 */ 2765 static int 2766 iwi_getrfkill(struct iwi_softc *sc) 2767 { 2768 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 2769 } 2770 2771 static int 2772 iwi_sysctl_radio(SYSCTLFN_ARGS) 2773 { 2774 struct sysctlnode node; 2775 struct iwi_softc *sc; 2776 int val, error; 2777 2778 node = *rnode; 2779 sc = (struct iwi_softc *)node.sysctl_data; 2780 2781 val = !iwi_getrfkill(sc); 2782 2783 node.sysctl_data = &val; 2784 error = sysctl_lookup(SYSCTLFN_CALL(&node)); 2785 2786 if (error || newp == NULL) 2787 return error; 2788 2789 return 0; 2790 } 2791 2792 #ifdef IWI_DEBUG 2793 SYSCTL_SETUP(sysctl_iwi, "sysctl iwi(4) subtree setup") 2794 { 2795 int rc; 2796 const struct sysctlnode *rnode; 2797 const struct sysctlnode *cnode; 2798 2799 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 2800 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 2801 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 2802 goto err; 2803 2804 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 2805 CTLFLAG_PERMANENT, CTLTYPE_NODE, "iwi", 2806 SYSCTL_DESCR("iwi global controls"), 2807 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 2808 goto err; 2809 2810 /* control debugging printfs */ 2811 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2812 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2813 "debug", SYSCTL_DESCR("Enable debugging output"), 2814 NULL, 0, &iwi_debug, 0, CTL_CREATE, CTL_EOL)) != 0) 2815 goto err; 2816 2817 return; 2818 err: 2819 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 2820 } 2821 2822 #endif /* IWI_DEBUG */ 2823 2824 /* 2825 * Add sysctl knobs. 2826 */ 2827 static void 2828 iwi_sysctlattach(struct iwi_softc *sc) 2829 { 2830 int rc; 2831 const struct sysctlnode *rnode; 2832 const struct sysctlnode *cnode; 2833 2834 struct sysctllog **clog = &sc->sc_sysctllog; 2835 2836 if ((rc = sysctl_createv(clog, 0, NULL, &rnode, 2837 CTLFLAG_PERMANENT, CTLTYPE_NODE, "hw", NULL, 2838 NULL, 0, NULL, 0, CTL_HW, CTL_EOL)) != 0) 2839 goto err; 2840 2841 if ((rc = sysctl_createv(clog, 0, &rnode, &rnode, 2842 CTLFLAG_PERMANENT, CTLTYPE_NODE, device_xname(sc->sc_dev), 2843 SYSCTL_DESCR("iwi controls and statistics"), 2844 NULL, 0, NULL, 0, CTL_CREATE, CTL_EOL)) != 0) 2845 goto err; 2846 2847 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2848 CTLFLAG_PERMANENT, CTLTYPE_INT, "radio", 2849 SYSCTL_DESCR("radio transmitter switch state (0=off, 1=on)"), 2850 iwi_sysctl_radio, 0, sc, 0, CTL_CREATE, CTL_EOL)) != 0) 2851 goto err; 2852 2853 sc->dwelltime = 100; 2854 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2855 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2856 "dwell", SYSCTL_DESCR("channel dwell time (ms) for AP/station scanning"), 2857 NULL, 0, &sc->dwelltime, 0, CTL_CREATE, CTL_EOL)) != 0) 2858 goto err; 2859 2860 sc->bluetooth = 0; 2861 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2862 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2863 "bluetooth", SYSCTL_DESCR("bluetooth coexistence"), 2864 NULL, 0, &sc->bluetooth, 0, CTL_CREATE, CTL_EOL)) != 0) 2865 goto err; 2866 2867 sc->antenna = IWI_ANTENNA_AUTO; 2868 if ((rc = sysctl_createv(clog, 0, &rnode, &cnode, 2869 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 2870 "antenna", SYSCTL_DESCR("antenna (0=auto)"), 2871 NULL, 0, &sc->antenna, 0, CTL_CREATE, CTL_EOL)) != 0) 2872 goto err; 2873 2874 return; 2875 err: 2876 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 2877 } 2878 2879 static void 2880 iwi_stop(struct ifnet *ifp, int disable) 2881 { 2882 struct iwi_softc *sc = ifp->if_softc; 2883 struct ieee80211com *ic = &sc->sc_ic; 2884 2885 IWI_LED_OFF(sc); 2886 2887 iwi_stop_master(sc); 2888 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SW_RESET); 2889 2890 /* reset rings */ 2891 iwi_reset_cmd_ring(sc, &sc->cmdq); 2892 iwi_reset_tx_ring(sc, &sc->txq[0]); 2893 iwi_reset_tx_ring(sc, &sc->txq[1]); 2894 iwi_reset_tx_ring(sc, &sc->txq[2]); 2895 iwi_reset_tx_ring(sc, &sc->txq[3]); 2896 iwi_reset_rx_ring(sc, &sc->rxq); 2897 2898 ifp->if_timer = 0; 2899 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 2900 2901 ieee80211_new_state(ic, IEEE80211_S_INIT, -1); 2902 } 2903 2904 static void 2905 iwi_led_set(struct iwi_softc *sc, uint32_t state, int toggle) 2906 { 2907 uint32_t val; 2908 2909 val = MEM_READ_4(sc, IWI_MEM_EVENT_CTL); 2910 2911 switch (sc->nictype) { 2912 case 1: 2913 /* special NIC type: reversed leds */ 2914 if (state == IWI_LED_ACTIVITY) { 2915 state &= ~IWI_LED_ACTIVITY; 2916 state |= IWI_LED_ASSOCIATED; 2917 } else if (state == IWI_LED_ASSOCIATED) { 2918 state &= ~IWI_LED_ASSOCIATED; 2919 state |= IWI_LED_ACTIVITY; 2920 } 2921 /* and ignore toggle effect */ 2922 val |= state; 2923 break; 2924 case 0: 2925 case 2: 2926 case 3: 2927 case 4: 2928 val = (toggle && (val & state)) ? val & ~state : val | state; 2929 break; 2930 default: 2931 aprint_normal_dev(sc->sc_dev, "unknown NIC type %d\n", 2932 sc->nictype); 2933 return; 2934 break; 2935 } 2936 2937 MEM_WRITE_4(sc, IWI_MEM_EVENT_CTL, val); 2938 2939 return; 2940 } 2941 2942 SYSCTL_SETUP(sysctl_hw_iwi_accept_eula_setup, "sysctl hw.iwi.accept_eula") 2943 { 2944 const struct sysctlnode *rnode; 2945 const struct sysctlnode *cnode; 2946 2947 sysctl_createv(NULL, 0, NULL, &rnode, 2948 CTLFLAG_PERMANENT, 2949 CTLTYPE_NODE, "hw", 2950 NULL, 2951 NULL, 0, 2952 NULL, 0, 2953 CTL_HW, CTL_EOL); 2954 2955 sysctl_createv(NULL, 0, &rnode, &rnode, 2956 CTLFLAG_PERMANENT, 2957 CTLTYPE_NODE, "iwi", 2958 NULL, 2959 NULL, 0, 2960 NULL, 0, 2961 CTL_CREATE, CTL_EOL); 2962 2963 sysctl_createv(NULL, 0, &rnode, &cnode, 2964 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, 2965 CTLTYPE_INT, "accept_eula", 2966 SYSCTL_DESCR("Accept Intel EULA and permit use of iwi(4) firmware"), 2967 NULL, 0, 2968 &iwi_accept_eula, sizeof(iwi_accept_eula), 2969 CTL_CREATE, CTL_EOL); 2970 } 2971