1 /*- 2 * Copyright (c) 2004, 2005 3 * Damien Bergamini <damien.bergamini@free.fr>. All rights reserved. 4 * Copyright (c) 2005-2006 Sam Leffler, Errno Consulting 5 * Copyright (c) 2007 Andrew Thompson <thompsa@FreeBSD.org> 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 * $FreeBSD: src/sys/dev/iwi/if_iwi.c,v 1.72 2009/07/10 15:28:33 rpaulo Exp $ 30 */ 31 32 /*- 33 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver 34 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 35 */ 36 37 #include <sys/param.h> 38 #include <sys/sysctl.h> 39 #include <sys/sockio.h> 40 #include <sys/mbuf.h> 41 #include <sys/kernel.h> 42 #include <sys/socket.h> 43 #include <sys/systm.h> 44 #include <sys/malloc.h> 45 #include <sys/lock.h> 46 #include <sys/mutex.h> 47 #include <sys/module.h> 48 #include <sys/bus.h> 49 #include <sys/endian.h> 50 #include <sys/proc.h> 51 #include <sys/mount.h> 52 #include <sys/namei.h> 53 #include <sys/linker.h> 54 #include <sys/firmware.h> 55 #include <sys/taskqueue.h> 56 #include <sys/devfs.h> 57 58 #include <sys/resource.h> 59 #include <sys/rman.h> 60 61 #include <bus/pci/pcireg.h> 62 #include <bus/pci/pcivar.h> 63 64 #include <net/bpf.h> 65 #include <net/if.h> 66 #include <net/if_arp.h> 67 #include <net/ethernet.h> 68 #include <net/if_dl.h> 69 #include <net/if_media.h> 70 #include <net/if_types.h> 71 #include <net/ifq_var.h> 72 73 #include <netproto/802_11/ieee80211_var.h> 74 #include <netproto/802_11/ieee80211_radiotap.h> 75 #include <netproto/802_11/ieee80211_input.h> 76 #include <netproto/802_11/ieee80211_regdomain.h> 77 78 #include <netinet/in.h> 79 #include <netinet/in_systm.h> 80 #include <netinet/in_var.h> 81 #include <netinet/ip.h> 82 #include <netinet/if_ether.h> 83 84 #include <dev/netif/iwi/if_iwireg.h> 85 #include <dev/netif/iwi/if_iwivar.h> 86 87 #define IWI_DEBUG 88 #ifdef IWI_DEBUG 89 #define DPRINTF(x) do { if (iwi_debug > 0) kprintf x; } while (0) 90 #define DPRINTFN(n, x) do { if (iwi_debug >= (n)) kprintf x; } while (0) 91 int iwi_debug = 0; 92 SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level"); 93 94 static const char *iwi_fw_states[] = { 95 "IDLE", /* IWI_FW_IDLE */ 96 "LOADING", /* IWI_FW_LOADING */ 97 "ASSOCIATING", /* IWI_FW_ASSOCIATING */ 98 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */ 99 "SCANNING", /* IWI_FW_SCANNING */ 100 }; 101 #else 102 #define DPRINTF(x) 103 #define DPRINTFN(n, x) 104 #endif 105 106 MODULE_DEPEND(iwi, pci, 1, 1, 1); 107 MODULE_DEPEND(iwi, wlan, 1, 1, 1); 108 MODULE_DEPEND(iwi, firmware, 1, 1, 1); 109 110 enum { 111 IWI_LED_TX, 112 IWI_LED_RX, 113 IWI_LED_POLL, 114 }; 115 116 struct iwi_ident { 117 uint16_t vendor; 118 uint16_t device; 119 const char *name; 120 }; 121 122 static const struct iwi_ident iwi_ident_table[] = { 123 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" }, 124 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" }, 125 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" }, 126 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" }, 127 128 { 0, 0, NULL } 129 }; 130 131 static struct ieee80211vap *iwi_vap_create(struct ieee80211com *, 132 const char name[IFNAMSIZ], int unit, 133 enum ieee80211_opmode opmode, int flags, 134 const uint8_t bssid[IEEE80211_ADDR_LEN], 135 const uint8_t mac[IEEE80211_ADDR_LEN]); 136 static void iwi_vap_delete(struct ieee80211vap *); 137 static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 138 static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 139 int); 140 static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 141 static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 142 static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 143 int, bus_addr_t, bus_addr_t); 144 static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 145 static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 146 static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 147 int); 148 static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 149 static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 150 static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *, 151 const uint8_t [IEEE80211_ADDR_LEN]); 152 static void iwi_node_free(struct ieee80211_node *); 153 static void iwi_media_status(struct ifnet *, struct ifmediareq *); 154 static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 155 static void iwi_wme_init(struct iwi_softc *); 156 static int iwi_wme_setparams(struct iwi_softc *, struct ieee80211com *); 157 static void iwi_update_wme_task(void *, int); 158 static int iwi_wme_update(struct ieee80211com *); 159 static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 160 static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 161 struct iwi_frame *); 162 static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *); 163 static void iwi_rx_intr(struct iwi_softc *); 164 static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *); 165 static void iwi_intr(void *); 166 static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t); 167 static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int); 168 static int iwi_tx_start(struct ifnet *, struct mbuf *, 169 struct ieee80211_node *, int); 170 static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *, 171 const struct ieee80211_bpf_params *); 172 static void iwi_start_locked(struct ifnet *); 173 static void iwi_start(struct ifnet *, struct ifaltq_subque *); 174 static void iwi_watchdog(void *); 175 static int iwi_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *ucred); 176 static void iwi_stop_master(struct iwi_softc *); 177 static int iwi_reset(struct iwi_softc *); 178 static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *); 179 static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *); 180 static void iwi_release_fw_dma(struct iwi_softc *sc); 181 static int iwi_config(struct iwi_softc *); 182 static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode); 183 static void iwi_put_firmware(struct iwi_softc *); 184 static int iwi_scanchan(struct iwi_softc *, unsigned long, int); 185 static void iwi_scan_start(struct ieee80211com *); 186 static void iwi_scan_end(struct ieee80211com *); 187 static void iwi_set_channel(struct ieee80211com *); 188 static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell); 189 static void iwi_scan_mindwell(struct ieee80211_scan_state *); 190 static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *); 191 static void iwi_disassoc_task(void *, int); 192 static int iwi_disassociate(struct iwi_softc *, int quiet); 193 static void iwi_init_locked(struct iwi_softc *); 194 static void iwi_init(void *); 195 static int iwi_init_fw_dma(struct iwi_softc *, int); 196 static void iwi_stop_locked(void *); 197 static void iwi_stop(struct iwi_softc *); 198 static void iwi_restart_task(void *, int); 199 static int iwi_getrfkill(struct iwi_softc *); 200 static void iwi_radio_on_task(void *, int); 201 static void iwi_radio_off_task(void *, int); 202 static void iwi_sysctlattach(struct iwi_softc *); 203 static void iwi_led_event(struct iwi_softc *, int); 204 static void iwi_ledattach(struct iwi_softc *); 205 206 static int iwi_probe(device_t); 207 static int iwi_attach(device_t); 208 static int iwi_detach(device_t); 209 static int iwi_shutdown(device_t); 210 static int iwi_suspend(device_t); 211 static int iwi_resume(device_t); 212 213 static device_method_t iwi_methods[] = { 214 /* Device interface */ 215 DEVMETHOD(device_probe, iwi_probe), 216 DEVMETHOD(device_attach, iwi_attach), 217 DEVMETHOD(device_detach, iwi_detach), 218 DEVMETHOD(device_shutdown, iwi_shutdown), 219 DEVMETHOD(device_suspend, iwi_suspend), 220 DEVMETHOD(device_resume, iwi_resume), 221 222 DEVMETHOD_END 223 }; 224 225 static driver_t iwi_driver = { 226 "iwi", 227 iwi_methods, 228 sizeof (struct iwi_softc) 229 }; 230 231 static devclass_t iwi_devclass; 232 233 DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL); 234 235 static __inline uint8_t 236 MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 237 { 238 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 239 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 240 } 241 242 static __inline uint32_t 243 MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 244 { 245 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 246 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 247 } 248 249 static int 250 iwi_probe(device_t dev) 251 { 252 const struct iwi_ident *ident; 253 254 wlan_serialize_enter(); 255 for (ident = iwi_ident_table; ident->name != NULL; ident++) { 256 if (pci_get_vendor(dev) == ident->vendor && 257 pci_get_device(dev) == ident->device) { 258 device_set_desc(dev, ident->name); 259 wlan_serialize_exit(); 260 return 0; 261 } 262 } 263 wlan_serialize_exit(); 264 return ENXIO; 265 } 266 267 /* Base Address Register */ 268 #define IWI_PCI_BAR0 0x10 269 270 static int 271 iwi_attach(device_t dev) 272 { 273 struct iwi_softc *sc = device_get_softc(dev); 274 struct ifnet *ifp; 275 struct ieee80211com *ic; 276 uint16_t val; 277 int i, error; 278 uint8_t bands; 279 uint8_t macaddr[IEEE80211_ADDR_LEN]; 280 281 wlan_serialize_enter(); 282 283 sc->sc_dev = dev; 284 285 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 286 if (ifp == NULL) { 287 device_printf(dev, "can not if_alloc()\n"); 288 wlan_serialize_exit(); 289 return ENXIO; 290 } 291 ic = ifp->if_l2com; 292 293 devfs_clone_bitmap_init(&sc->sc_unr); 294 295 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on_task, sc); 296 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off_task, sc); 297 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart_task, sc); 298 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc_task, sc); 299 TASK_INIT(&sc->sc_wmetask, 0, iwi_update_wme_task, sc); 300 301 callout_init(&sc->sc_wdtimer_callout); 302 callout_init(&sc->sc_rftimer_callout); 303 304 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 305 device_printf(dev, "chip is in D%d power mode " 306 "-- setting to D0\n", pci_get_powerstate(dev)); 307 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 308 } 309 310 pci_write_config(dev, 0x41, 0, 1); 311 312 /* enable bus-mastering */ 313 pci_enable_busmaster(dev); 314 315 sc->mem_rid = IWI_PCI_BAR0; 316 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 317 RF_ACTIVE); 318 if (sc->mem == NULL) { 319 device_printf(dev, "could not allocate memory resource\n"); 320 goto fail; 321 } 322 323 sc->sc_st = rman_get_bustag(sc->mem); 324 sc->sc_sh = rman_get_bushandle(sc->mem); 325 326 sc->irq_rid = 0; 327 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 328 RF_ACTIVE | RF_SHAREABLE); 329 if (sc->irq == NULL) { 330 device_printf(dev, "could not allocate interrupt resource\n"); 331 goto fail; 332 } 333 334 if (iwi_reset(sc) != 0) { 335 device_printf(dev, "could not reset adapter\n"); 336 goto fail; 337 } 338 339 /* 340 * Allocate rings. 341 */ 342 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 343 device_printf(dev, "could not allocate Cmd ring\n"); 344 goto fail; 345 } 346 347 for (i = 0; i < 4; i++) { 348 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT, 349 IWI_CSR_TX1_RIDX + i * 4, 350 IWI_CSR_TX1_WIDX + i * 4); 351 if (error != 0) { 352 device_printf(dev, "could not allocate Tx ring %d\n", 353 i+i); 354 goto fail; 355 } 356 } 357 358 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 359 device_printf(dev, "could not allocate Rx ring\n"); 360 goto fail; 361 } 362 363 iwi_wme_init(sc); 364 365 ifp->if_softc = sc; 366 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 367 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 368 ifp->if_init = iwi_init; 369 ifp->if_ioctl = iwi_ioctl; 370 ifp->if_start = iwi_start; 371 ifq_set_maxlen(&ifp->if_snd, IFQ_MAXLEN); 372 #ifdef notyet 373 ifq_set_ready(&ifp->if_snd); 374 #endif 375 376 ic->ic_ifp = ifp; 377 ic->ic_opmode = IEEE80211_M_STA; 378 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 379 380 /* set device capabilities */ 381 ic->ic_caps = 382 IEEE80211_C_STA /* station mode supported */ 383 | IEEE80211_C_IBSS /* IBSS mode supported */ 384 | IEEE80211_C_MONITOR /* monitor mode supported */ 385 | IEEE80211_C_PMGT /* power save supported */ 386 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 387 | IEEE80211_C_WPA /* 802.11i */ 388 | IEEE80211_C_WME /* 802.11e */ 389 #if 0 390 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 391 #endif 392 ; 393 394 /* read MAC address from EEPROM */ 395 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 396 macaddr[0] = val & 0xff; 397 macaddr[1] = val >> 8; 398 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 399 macaddr[2] = val & 0xff; 400 macaddr[3] = val >> 8; 401 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 402 macaddr[4] = val & 0xff; 403 macaddr[5] = val >> 8; 404 405 bands = 0; 406 setbit(&bands, IEEE80211_MODE_11B); 407 setbit(&bands, IEEE80211_MODE_11G); 408 if (pci_get_device(dev) >= 0x4223) 409 setbit(&bands, IEEE80211_MODE_11A); 410 ieee80211_init_channels(ic, NULL, &bands); 411 412 ieee80211_ifattach(ic, macaddr); 413 /* override default methods */ 414 ic->ic_node_alloc = iwi_node_alloc; 415 sc->sc_node_free = ic->ic_node_free; 416 ic->ic_node_free = iwi_node_free; 417 ic->ic_raw_xmit = iwi_raw_xmit; 418 ic->ic_scan_start = iwi_scan_start; 419 ic->ic_scan_end = iwi_scan_end; 420 ic->ic_set_channel = iwi_set_channel; 421 ic->ic_scan_curchan = iwi_scan_curchan; 422 ic->ic_scan_mindwell = iwi_scan_mindwell; 423 ic->ic_wme.wme_update = iwi_wme_update; 424 425 ic->ic_vap_create = iwi_vap_create; 426 ic->ic_vap_delete = iwi_vap_delete; 427 428 ieee80211_radiotap_attach(ic, 429 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 430 IWI_TX_RADIOTAP_PRESENT, 431 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 432 IWI_RX_RADIOTAP_PRESENT); 433 434 iwi_sysctlattach(sc); 435 iwi_ledattach(sc); 436 437 /* 438 * Hook our interrupt after all initialization is complete. 439 */ 440 error = bus_setup_intr(dev, sc->irq, INTR_MPSAFE, 441 iwi_intr, sc, &sc->sc_ih, &wlan_global_serializer); 442 if (error != 0) { 443 device_printf(dev, "could not set up interrupt\n"); 444 goto fail; 445 } 446 447 if (bootverbose) 448 ieee80211_announce(ic); 449 450 wlan_serialize_exit(); 451 return 0; 452 fail: 453 /* XXX fix */ 454 wlan_serialize_exit(); 455 iwi_detach(dev); 456 return ENXIO; 457 } 458 459 static int 460 iwi_detach(device_t dev) 461 { 462 struct iwi_softc *sc = device_get_softc(dev); 463 struct ifnet *ifp = sc->sc_ifp; 464 struct ieee80211com *ic = ifp->if_l2com; 465 466 wlan_serialize_enter(); 467 468 /* NB: do early to drain any pending tasks */ 469 ieee80211_draintask(ic, &sc->sc_radiontask); 470 ieee80211_draintask(ic, &sc->sc_radiofftask); 471 ieee80211_draintask(ic, &sc->sc_restarttask); 472 ieee80211_draintask(ic, &sc->sc_disassoctask); 473 474 iwi_stop(sc); 475 476 ieee80211_ifdetach(ic); 477 478 iwi_put_firmware(sc); 479 iwi_release_fw_dma(sc); 480 481 iwi_free_cmd_ring(sc, &sc->cmdq); 482 iwi_free_tx_ring(sc, &sc->txq[0]); 483 iwi_free_tx_ring(sc, &sc->txq[1]); 484 iwi_free_tx_ring(sc, &sc->txq[2]); 485 iwi_free_tx_ring(sc, &sc->txq[3]); 486 iwi_free_rx_ring(sc, &sc->rxq); 487 488 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 489 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 490 491 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 492 493 devfs_clone_bitmap_uninit(&sc->sc_unr); 494 495 if (sc->sc_sysctl_tree != NULL) 496 sysctl_ctx_free(&sc->sc_sysctl_ctx); 497 498 if_free(ifp); 499 500 wlan_serialize_exit(); 501 return 0; 502 } 503 504 static struct ieee80211vap * 505 iwi_vap_create(struct ieee80211com *ic, 506 const char name[IFNAMSIZ], int unit, 507 enum ieee80211_opmode opmode, int flags, 508 const uint8_t bssid[IEEE80211_ADDR_LEN], 509 const uint8_t mac[IEEE80211_ADDR_LEN]) 510 { 511 struct ifnet *ifp = ic->ic_ifp; 512 struct iwi_softc *sc = ifp->if_softc; 513 struct iwi_vap *ivp; 514 struct ieee80211vap *vap; 515 int i; 516 517 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 518 return NULL; 519 /* 520 * Get firmware image (and possibly dma memory) on mode change. 521 */ 522 if (iwi_get_firmware(sc, opmode)) 523 return NULL; 524 /* allocate DMA memory for mapping firmware image */ 525 i = sc->fw_fw.size; 526 if (sc->fw_boot.size > i) 527 i = sc->fw_boot.size; 528 /* XXX do we dma the ucode as well ? */ 529 if (sc->fw_uc.size > i) 530 i = sc->fw_uc.size; 531 if (iwi_init_fw_dma(sc, i)) 532 return NULL; 533 534 ivp = (struct iwi_vap *) kmalloc(sizeof(struct iwi_vap), 535 M_80211_VAP, M_WAITOK | M_ZERO); 536 if (ivp == NULL) 537 return NULL; 538 vap = &ivp->iwi_vap; 539 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 540 /* override the default, the setting comes from the linux driver */ 541 vap->iv_bmissthreshold = 24; 542 /* override with driver methods */ 543 ivp->iwi_newstate = vap->iv_newstate; 544 vap->iv_newstate = iwi_newstate; 545 546 /* complete setup */ 547 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status); 548 ic->ic_opmode = opmode; 549 return vap; 550 } 551 552 static void 553 iwi_vap_delete(struct ieee80211vap *vap) 554 { 555 struct iwi_vap *ivp = IWI_VAP(vap); 556 557 ieee80211_vap_detach(vap); 558 kfree(ivp, M_80211_VAP); 559 } 560 561 static void 562 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 563 { 564 if (error != 0) 565 return; 566 567 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 568 569 *(bus_addr_t *)arg = segs[0].ds_addr; 570 } 571 572 static int 573 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count) 574 { 575 int error; 576 577 ring->count = count; 578 ring->queued = 0; 579 ring->cur = ring->next = 0; 580 581 error = bus_dma_tag_create(NULL, 4, 0, 582 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 583 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 584 0 , &ring->desc_dmat); 585 if (error != 0) { 586 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 587 goto fail; 588 } 589 590 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 591 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 592 if (error != 0) { 593 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 594 goto fail; 595 } 596 597 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 598 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 599 if (error != 0) { 600 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 601 goto fail; 602 } 603 604 return 0; 605 606 fail: iwi_free_cmd_ring(sc, ring); 607 return error; 608 } 609 610 static void 611 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 612 { 613 ring->queued = 0; 614 ring->cur = ring->next = 0; 615 } 616 617 static void 618 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 619 { 620 if (ring->desc != NULL) { 621 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 622 BUS_DMASYNC_POSTWRITE); 623 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 624 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 625 } 626 627 if (ring->desc_dmat != NULL) 628 bus_dma_tag_destroy(ring->desc_dmat); 629 } 630 631 static int 632 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count, 633 bus_addr_t csr_ridx, bus_addr_t csr_widx) 634 { 635 int i, error; 636 637 ring->count = count; 638 ring->queued = 0; 639 ring->cur = ring->next = 0; 640 ring->csr_ridx = csr_ridx; 641 ring->csr_widx = csr_widx; 642 643 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 644 BUS_SPACE_MAXADDR, NULL, NULL, count * IWI_TX_DESC_SIZE, 1, 645 count * IWI_TX_DESC_SIZE, 0, &ring->desc_dmat); 646 if (error != 0) { 647 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 648 goto fail; 649 } 650 651 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 652 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 655 goto fail; 656 } 657 658 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 659 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 660 if (error != 0) { 661 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 662 goto fail; 663 } 664 665 ring->data = kmalloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 666 M_WAITOK | M_ZERO); 667 668 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 669 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG, 670 MCLBYTES, 0, &ring->data_dmat); 671 if (error != 0) { 672 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 673 goto fail; 674 } 675 676 for (i = 0; i < count; i++) { 677 error = bus_dmamap_create(ring->data_dmat, 0, 678 &ring->data[i].map); 679 if (error != 0) { 680 device_printf(sc->sc_dev, "could not create DMA map\n"); 681 goto fail; 682 } 683 } 684 685 return 0; 686 687 fail: iwi_free_tx_ring(sc, ring); 688 return error; 689 } 690 691 static void 692 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 693 { 694 struct iwi_tx_data *data; 695 int i; 696 697 for (i = 0; i < ring->count; i++) { 698 data = &ring->data[i]; 699 700 if (data->m != NULL) { 701 bus_dmamap_sync(ring->data_dmat, data->map, 702 BUS_DMASYNC_POSTWRITE); 703 bus_dmamap_unload(ring->data_dmat, data->map); 704 m_freem(data->m); 705 data->m = NULL; 706 } 707 708 if (data->ni != NULL) { 709 ieee80211_free_node(data->ni); 710 data->ni = NULL; 711 } 712 } 713 714 ring->queued = 0; 715 ring->cur = ring->next = 0; 716 } 717 718 static void 719 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 720 { 721 struct iwi_tx_data *data; 722 int i; 723 724 if (ring->desc != NULL) { 725 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 726 BUS_DMASYNC_POSTWRITE); 727 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 728 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 729 } 730 731 if (ring->desc_dmat != NULL) 732 bus_dma_tag_destroy(ring->desc_dmat); 733 734 if (ring->data != NULL) { 735 for (i = 0; i < ring->count; i++) { 736 data = &ring->data[i]; 737 738 if (data->m != NULL) { 739 bus_dmamap_sync(ring->data_dmat, data->map, 740 BUS_DMASYNC_POSTWRITE); 741 bus_dmamap_unload(ring->data_dmat, data->map); 742 m_freem(data->m); 743 } 744 745 if (data->ni != NULL) 746 ieee80211_free_node(data->ni); 747 748 if (data->map != NULL) 749 bus_dmamap_destroy(ring->data_dmat, data->map); 750 } 751 752 kfree(ring->data, M_DEVBUF); 753 } 754 755 if (ring->data_dmat != NULL) 756 bus_dma_tag_destroy(ring->data_dmat); 757 } 758 759 static int 760 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 761 { 762 struct iwi_rx_data *data; 763 int i, error; 764 765 ring->count = count; 766 ring->cur = 0; 767 768 ring->data = kmalloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 769 M_WAITOK | M_ZERO); 770 771 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 772 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 773 0, &ring->data_dmat); 774 if (error != 0) { 775 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 776 goto fail; 777 } 778 779 for (i = 0; i < count; i++) { 780 data = &ring->data[i]; 781 782 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 783 if (error != 0) { 784 device_printf(sc->sc_dev, "could not create DMA map\n"); 785 goto fail; 786 } 787 788 data->m = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 789 if (data->m == NULL) { 790 device_printf(sc->sc_dev, 791 "could not allocate rx mbuf\n"); 792 error = ENOMEM; 793 goto fail; 794 } 795 796 error = bus_dmamap_load(ring->data_dmat, data->map, 797 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 798 &data->physaddr, 0); 799 if (error != 0) { 800 device_printf(sc->sc_dev, 801 "could not load rx buf DMA map"); 802 goto fail; 803 } 804 805 data->reg = IWI_CSR_RX_BASE + i * 4; 806 } 807 808 return 0; 809 810 fail: iwi_free_rx_ring(sc, ring); 811 return error; 812 } 813 814 static void 815 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 816 { 817 ring->cur = 0; 818 } 819 820 static void 821 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 822 { 823 struct iwi_rx_data *data; 824 int i; 825 826 if (ring->data != NULL) { 827 for (i = 0; i < ring->count; i++) { 828 data = &ring->data[i]; 829 830 if (data->m != NULL) { 831 bus_dmamap_sync(ring->data_dmat, data->map, 832 BUS_DMASYNC_POSTREAD); 833 bus_dmamap_unload(ring->data_dmat, data->map); 834 m_freem(data->m); 835 } 836 837 if (data->map != NULL) 838 bus_dmamap_destroy(ring->data_dmat, data->map); 839 } 840 841 kfree(ring->data, M_DEVBUF); 842 } 843 844 if (ring->data_dmat != NULL) 845 bus_dma_tag_destroy(ring->data_dmat); 846 } 847 848 static int 849 iwi_shutdown(device_t dev) 850 { 851 struct iwi_softc *sc = device_get_softc(dev); 852 853 wlan_serialize_enter(); 854 iwi_stop(sc); 855 iwi_put_firmware(sc); /* ??? XXX */ 856 wlan_serialize_exit(); 857 858 return 0; 859 } 860 861 static int 862 iwi_suspend(device_t dev) 863 { 864 struct iwi_softc *sc = device_get_softc(dev); 865 866 wlan_serialize_enter(); 867 iwi_stop(sc); 868 wlan_serialize_exit(); 869 870 return 0; 871 } 872 873 static int 874 iwi_resume(device_t dev) 875 { 876 struct iwi_softc *sc = device_get_softc(dev); 877 struct ifnet *ifp = sc->sc_ifp; 878 879 wlan_serialize_enter(); 880 pci_write_config(dev, 0x41, 0, 1); 881 882 if (ifp->if_flags & IFF_UP) 883 iwi_init(sc); 884 885 wlan_serialize_exit(); 886 return 0; 887 } 888 889 static struct ieee80211_node * 890 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 891 { 892 struct iwi_node *in; 893 894 in = kmalloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 895 if (in == NULL) 896 return NULL; 897 /* XXX assign sta table entry for adhoc */ 898 in->in_station = -1; 899 900 return &in->in_node; 901 } 902 903 static void 904 iwi_node_free(struct ieee80211_node *ni) 905 { 906 struct ieee80211com *ic = ni->ni_ic; 907 struct iwi_softc *sc = ic->ic_ifp->if_softc; 908 struct iwi_node *in = (struct iwi_node *)ni; 909 char ethstr[ETHER_ADDRSTRLEN + 1]; 910 911 if (in->in_station != -1) { 912 DPRINTF(("%s mac %s station %u\n", __func__, 913 kether_ntoa(ni->ni_macaddr, ethstr), in->in_station)); 914 devfs_clone_bitmap_put(&sc->sc_unr, in->in_station); 915 } 916 917 sc->sc_node_free(ni); 918 } 919 920 /* 921 * Convert h/w rate code to IEEE rate code. 922 */ 923 static int 924 iwi_cvtrate(int iwirate) 925 { 926 switch (iwirate) { 927 case IWI_RATE_DS1: return 2; 928 case IWI_RATE_DS2: return 4; 929 case IWI_RATE_DS5: return 11; 930 case IWI_RATE_DS11: return 22; 931 case IWI_RATE_OFDM6: return 12; 932 case IWI_RATE_OFDM9: return 18; 933 case IWI_RATE_OFDM12: return 24; 934 case IWI_RATE_OFDM18: return 36; 935 case IWI_RATE_OFDM24: return 48; 936 case IWI_RATE_OFDM36: return 72; 937 case IWI_RATE_OFDM48: return 96; 938 case IWI_RATE_OFDM54: return 108; 939 } 940 return 0; 941 } 942 943 /* 944 * The firmware automatically adapts the transmit speed. We report its current 945 * value here. 946 */ 947 static void 948 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 949 { 950 struct ieee80211vap *vap = ifp->if_softc; 951 struct ieee80211com *ic = vap->iv_ic; 952 struct iwi_softc *sc = ic->ic_ifp->if_softc; 953 954 /* read current transmission rate from adapter */ 955 vap->iv_bss->ni_txrate = 956 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 957 ieee80211_media_status(ifp, imr); 958 } 959 960 static int 961 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 962 { 963 struct iwi_vap *ivp = IWI_VAP(vap); 964 struct ieee80211com *ic = vap->iv_ic; 965 struct ifnet *ifp = ic->ic_ifp; 966 struct iwi_softc *sc = ifp->if_softc; 967 968 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 969 ieee80211_state_name[vap->iv_state], 970 ieee80211_state_name[nstate], sc->flags)); 971 972 switch (nstate) { 973 case IEEE80211_S_INIT: 974 /* 975 * NB: don't try to do this if iwi_stop_master has 976 * shutdown the firmware and disabled interrupts. 977 */ 978 if (vap->iv_state == IEEE80211_S_RUN && 979 (sc->flags & IWI_FLAG_FW_INITED)) 980 iwi_disassociate(sc, 0); 981 break; 982 case IEEE80211_S_AUTH: 983 iwi_auth_and_assoc(sc, vap); 984 break; 985 case IEEE80211_S_RUN: 986 if (vap->iv_opmode == IEEE80211_M_IBSS && 987 vap->iv_state == IEEE80211_S_SCAN) { 988 /* 989 * XXX when joining an ibss network we are called 990 * with a SCAN -> RUN transition on scan complete. 991 * Use that to call iwi_auth_and_assoc. On completing 992 * the join we are then called again with an 993 * AUTH -> RUN transition and we want to do nothing. 994 * This is all totally bogus and needs to be redone. 995 */ 996 iwi_auth_and_assoc(sc, vap); 997 } 998 break; 999 case IEEE80211_S_ASSOC: 1000 /* 1001 * If we are transitioning from AUTH then just wait 1002 * for the ASSOC status to come back from the firmware. 1003 * Otherwise we need to issue the association request. 1004 */ 1005 if (vap->iv_state == IEEE80211_S_AUTH) 1006 break; 1007 iwi_auth_and_assoc(sc, vap); 1008 break; 1009 default: 1010 break; 1011 } 1012 1013 return ivp->iwi_newstate(vap, nstate, arg); 1014 } 1015 1016 /* 1017 * WME parameters coming from IEEE 802.11e specification. These values are 1018 * already declared in ieee80211_proto.c, but they are static so they can't 1019 * be reused here. 1020 */ 1021 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 1022 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */ 1023 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */ 1024 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */ 1025 { 0, 2, 3, 4, 102 } /* WME_AC_VO */ 1026 }; 1027 1028 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 1029 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */ 1030 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */ 1031 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */ 1032 { 0, 2, 2, 3, 47 } /* WME_AC_VO */ 1033 }; 1034 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 1035 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 1036 1037 static void 1038 iwi_wme_init(struct iwi_softc *sc) 1039 { 1040 const struct wmeParams *wmep; 1041 int ac; 1042 1043 memset(sc->wme, 0, sizeof sc->wme); 1044 for (ac = 0; ac < WME_NUM_AC; ac++) { 1045 /* set WME values for CCK modulation */ 1046 wmep = &iwi_wme_cck_params[ac]; 1047 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn; 1048 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1049 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1050 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1051 sc->wme[1].acm[ac] = wmep->wmep_acm; 1052 1053 /* set WME values for OFDM modulation */ 1054 wmep = &iwi_wme_ofdm_params[ac]; 1055 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn; 1056 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1057 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1058 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1059 sc->wme[2].acm[ac] = wmep->wmep_acm; 1060 } 1061 } 1062 1063 static int 1064 iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic) 1065 { 1066 const struct wmeParams *wmep; 1067 int ac; 1068 1069 for (ac = 0; ac < WME_NUM_AC; ac++) { 1070 /* set WME values for current operating mode */ 1071 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1072 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn; 1073 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1074 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1075 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1076 sc->wme[0].acm[ac] = wmep->wmep_acm; 1077 } 1078 1079 DPRINTF(("Setting WME parameters\n")); 1080 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme); 1081 } 1082 #undef IWI_USEC 1083 #undef IWI_EXP2 1084 1085 static void 1086 iwi_update_wme_task(void *arg, int npending) 1087 { 1088 struct ieee80211com *ic = arg; 1089 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1090 1091 wlan_serialize_enter(); 1092 (void) iwi_wme_setparams(sc, ic); 1093 wlan_serialize_exit(); 1094 } 1095 1096 static int 1097 iwi_wme_update(struct ieee80211com *ic) 1098 { 1099 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1100 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1101 1102 /* 1103 * We may be called to update the WME parameters in 1104 * the adapter at various places. If we're already 1105 * associated then initiate the request immediately; 1106 * otherwise we assume the params will get sent down 1107 * to the adapter as part of the work iwi_auth_and_assoc 1108 * does. 1109 */ 1110 if (vap->iv_state == IEEE80211_S_RUN) 1111 ieee80211_runtask(ic, &sc->sc_wmetask); 1112 return (0); 1113 } 1114 1115 static int 1116 iwi_wme_setie(struct iwi_softc *sc) 1117 { 1118 struct ieee80211_wme_info wme; 1119 1120 memset(&wme, 0, sizeof wme); 1121 wme.wme_id = IEEE80211_ELEMID_VENDOR; 1122 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 1123 wme.wme_oui[0] = 0x00; 1124 wme.wme_oui[1] = 0x50; 1125 wme.wme_oui[2] = 0xf2; 1126 wme.wme_type = WME_OUI_TYPE; 1127 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 1128 wme.wme_version = WME_VERSION; 1129 wme.wme_info = 0; 1130 1131 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 1132 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme); 1133 } 1134 1135 /* 1136 * Read 16 bits at address 'addr' from the serial EEPROM. 1137 */ 1138 static uint16_t 1139 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1140 { 1141 uint32_t tmp; 1142 uint16_t val; 1143 int n; 1144 1145 /* clock C once before the first command */ 1146 IWI_EEPROM_CTL(sc, 0); 1147 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1148 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1149 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1150 1151 /* write start bit (1) */ 1152 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1153 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1154 1155 /* write READ opcode (10) */ 1156 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1157 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1158 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1159 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1160 1161 /* write address A7-A0 */ 1162 for (n = 7; n >= 0; n--) { 1163 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1164 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1165 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1166 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1167 } 1168 1169 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1170 1171 /* read data Q15-Q0 */ 1172 val = 0; 1173 for (n = 15; n >= 0; n--) { 1174 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1175 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1176 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1177 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1178 } 1179 1180 IWI_EEPROM_CTL(sc, 0); 1181 1182 /* clear Chip Select and clock C */ 1183 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1184 IWI_EEPROM_CTL(sc, 0); 1185 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1186 1187 return val; 1188 } 1189 1190 static void 1191 iwi_setcurchan(struct iwi_softc *sc, int chan) 1192 { 1193 struct ifnet *ifp = sc->sc_ifp; 1194 struct ieee80211com *ic = ifp->if_l2com; 1195 1196 sc->curchan = chan; 1197 ieee80211_radiotap_chan_change(ic); 1198 } 1199 1200 static void 1201 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1202 struct iwi_frame *frame) 1203 { 1204 struct ifnet *ifp = sc->sc_ifp; 1205 struct ieee80211com *ic = ifp->if_l2com; 1206 struct mbuf *mnew, *m; 1207 struct ieee80211_node *ni; 1208 int type, error, framelen; 1209 int8_t rssi, nf; 1210 1211 framelen = le16toh(frame->len); 1212 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) { 1213 /* 1214 * XXX >MCLBYTES is bogus as it means the h/w dma'd 1215 * out of bounds; need to figure out how to limit 1216 * frame size in the firmware 1217 */ 1218 /* XXX stat */ 1219 DPRINTFN(1, 1220 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1221 le16toh(frame->len), frame->chan, frame->rssi, 1222 frame->rssi_dbm)); 1223 return; 1224 } 1225 1226 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1227 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm)); 1228 1229 if (frame->chan != sc->curchan) 1230 iwi_setcurchan(sc, frame->chan); 1231 1232 /* 1233 * Try to allocate a new mbuf for this ring element and load it before 1234 * processing the current mbuf. If the ring element cannot be loaded, 1235 * drop the received packet and reuse the old mbuf. In the unlikely 1236 * case that the old mbuf can't be reloaded either, explicitly panic. 1237 */ 1238 mnew = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); 1239 if (mnew == NULL) { 1240 IFNET_STAT_INC(ifp, ierrors, 1); 1241 return; 1242 } 1243 1244 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1245 1246 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1247 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr, 1248 0); 1249 if (error != 0) { 1250 m_freem(mnew); 1251 1252 /* try to reload the old mbuf */ 1253 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1254 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 1255 &data->physaddr, 0); 1256 if (error != 0) { 1257 /* very unlikely that it will fail... */ 1258 panic("%s: could not load old rx mbuf", 1259 device_get_name(sc->sc_dev)); 1260 } 1261 IFNET_STAT_INC(ifp, ierrors, 1); 1262 return; 1263 } 1264 1265 /* 1266 * New mbuf successfully loaded, update Rx ring and continue 1267 * processing. 1268 */ 1269 m = data->m; 1270 data->m = mnew; 1271 CSR_WRITE_4(sc, data->reg, data->physaddr); 1272 1273 /* finalize mbuf */ 1274 m->m_pkthdr.rcvif = ifp; 1275 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1276 sizeof (struct iwi_frame) + framelen; 1277 1278 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1279 1280 rssi = frame->rssi_dbm; 1281 nf = -95; 1282 if (ieee80211_radiotap_active(ic)) { 1283 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1284 1285 tap->wr_flags = 0; 1286 tap->wr_antsignal = rssi; 1287 tap->wr_antnoise = nf; 1288 tap->wr_rate = iwi_cvtrate(frame->rate); 1289 tap->wr_antenna = frame->antenna; 1290 } 1291 1292 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1293 if (ni != NULL) { 1294 type = ieee80211_input(ni, m, rssi, nf); 1295 ieee80211_free_node(ni); 1296 } else 1297 type = ieee80211_input_all(ic, m, rssi, nf); 1298 1299 if (sc->sc_softled) { 1300 /* 1301 * Blink for any data frame. Otherwise do a 1302 * heartbeat-style blink when idle. The latter 1303 * is mainly for station mode where we depend on 1304 * periodic beacon frames to trigger the poll event. 1305 */ 1306 if (type == IEEE80211_FC0_TYPE_DATA) { 1307 sc->sc_rxrate = frame->rate; 1308 iwi_led_event(sc, IWI_LED_RX); 1309 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle) 1310 iwi_led_event(sc, IWI_LED_POLL); 1311 } 1312 } 1313 1314 /* 1315 * Check for an association response frame to see if QoS 1316 * has been negotiated. We parse just enough to figure 1317 * out if we're supposed to use QoS. The proper solution 1318 * is to pass the frame up so ieee80211_input can do the 1319 * work but that's made hard by how things currently are 1320 * done in the driver. 1321 */ 1322 static void 1323 iwi_checkforqos(struct ieee80211vap *vap, 1324 const struct ieee80211_frame *wh, int len) 1325 { 1326 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 1327 const uint8_t *frm, *efrm, *wme; 1328 struct ieee80211_node *ni; 1329 uint16_t capinfo, associd; 1330 1331 /* NB: +8 for capinfo, status, associd, and first ie */ 1332 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) || 1333 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP) 1334 return; 1335 /* 1336 * asresp frame format 1337 * [2] capability information 1338 * [2] status 1339 * [2] association ID 1340 * [tlv] supported rates 1341 * [tlv] extended supported rates 1342 * [tlv] WME 1343 */ 1344 frm = (const uint8_t *)&wh[1]; 1345 efrm = ((const uint8_t *) wh) + len; 1346 1347 capinfo = le16toh(*(const uint16_t *)frm); 1348 frm += 2; 1349 frm += 2; 1350 associd = le16toh(*(const uint16_t *)frm); 1351 frm += 2; 1352 1353 wme = NULL; 1354 while (frm < efrm) { 1355 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1], return); 1356 switch (*frm) { 1357 case IEEE80211_ELEMID_VENDOR: 1358 if (iswmeoui(frm)) 1359 wme = frm; 1360 break; 1361 } 1362 frm += frm[1] + 2; 1363 } 1364 1365 ni = vap->iv_bss; 1366 ni->ni_capinfo = capinfo; 1367 ni->ni_associd = associd; 1368 if (wme != NULL) 1369 ni->ni_flags |= IEEE80211_NODE_QOS; 1370 else 1371 ni->ni_flags &= ~IEEE80211_NODE_QOS; 1372 #undef SUBTYPE 1373 } 1374 1375 /* 1376 * Task queue callbacks for iwi_notification_intr used to avoid LOR's. 1377 */ 1378 1379 static void 1380 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1381 { 1382 struct ifnet *ifp = sc->sc_ifp; 1383 struct ieee80211com *ic = ifp->if_l2com; 1384 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1385 struct iwi_notif_scan_channel *chan; 1386 struct iwi_notif_scan_complete *scan; 1387 struct iwi_notif_authentication *auth; 1388 struct iwi_notif_association *assoc; 1389 struct iwi_notif_beacon_state *beacon; 1390 1391 switch (notif->type) { 1392 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1393 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1394 1395 DPRINTFN(3, ("Scan of channel %u complete (%u)\n", 1396 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan)); 1397 1398 /* Reset the timer, the scan is still going */ 1399 sc->sc_state_timer = 3; 1400 break; 1401 1402 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1403 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1404 1405 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1406 scan->status)); 1407 1408 IWI_STATE_END(sc, IWI_FW_SCANNING); 1409 1410 if (scan->status == IWI_SCAN_COMPLETED) { 1411 /* NB: don't need to defer, net80211 does it for us */ 1412 ieee80211_scan_next(vap); 1413 } 1414 break; 1415 1416 case IWI_NOTIF_TYPE_AUTHENTICATION: 1417 auth = (struct iwi_notif_authentication *)(notif + 1); 1418 switch (auth->state) { 1419 case IWI_AUTH_SUCCESS: 1420 DPRINTFN(2, ("Authentication succeeeded\n")); 1421 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1); 1422 break; 1423 case IWI_AUTH_FAIL: 1424 /* 1425 * These are delivered as an unsolicited deauth 1426 * (e.g. due to inactivity) or in response to an 1427 * associate request. 1428 */ 1429 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1430 if (vap->iv_state != IEEE80211_S_RUN) { 1431 DPRINTFN(2, ("Authentication failed\n")); 1432 vap->iv_stats.is_rx_auth_fail++; 1433 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1434 } else { 1435 DPRINTFN(2, ("Deauthenticated\n")); 1436 vap->iv_stats.is_rx_deauth++; 1437 } 1438 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1439 break; 1440 case IWI_AUTH_SENT_1: 1441 case IWI_AUTH_RECV_2: 1442 case IWI_AUTH_SEQ1_PASS: 1443 break; 1444 case IWI_AUTH_SEQ1_FAIL: 1445 DPRINTFN(2, ("Initial authentication handshake failed; " 1446 "you probably need shared key\n")); 1447 vap->iv_stats.is_rx_auth_fail++; 1448 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1449 /* XXX retry shared key when in auto */ 1450 break; 1451 default: 1452 device_printf(sc->sc_dev, 1453 "unknown authentication state %u\n", auth->state); 1454 break; 1455 } 1456 break; 1457 1458 case IWI_NOTIF_TYPE_ASSOCIATION: 1459 assoc = (struct iwi_notif_association *)(notif + 1); 1460 switch (assoc->state) { 1461 case IWI_AUTH_SUCCESS: 1462 /* re-association, do nothing */ 1463 break; 1464 case IWI_ASSOC_SUCCESS: 1465 DPRINTFN(2, ("Association succeeded\n")); 1466 sc->flags |= IWI_FLAG_ASSOCIATED; 1467 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1468 iwi_checkforqos(vap, 1469 (const struct ieee80211_frame *)(assoc+1), 1470 le16toh(notif->len) - sizeof(*assoc)); 1471 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1472 break; 1473 case IWI_ASSOC_INIT: 1474 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1475 switch (sc->fw_state) { 1476 case IWI_FW_ASSOCIATING: 1477 DPRINTFN(2, ("Association failed\n")); 1478 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1479 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1480 break; 1481 1482 case IWI_FW_DISASSOCIATING: 1483 DPRINTFN(2, ("Dissassociated\n")); 1484 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING); 1485 vap->iv_stats.is_rx_disassoc++; 1486 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1487 break; 1488 } 1489 break; 1490 default: 1491 device_printf(sc->sc_dev, 1492 "unknown association state %u\n", assoc->state); 1493 break; 1494 } 1495 break; 1496 1497 case IWI_NOTIF_TYPE_BEACON: 1498 /* XXX check struct length */ 1499 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1500 1501 DPRINTFN(5, ("Beacon state (%u, %u)\n", 1502 beacon->state, le32toh(beacon->number))); 1503 1504 if (beacon->state == IWI_BEACON_MISS) { 1505 /* 1506 * The firmware notifies us of every beacon miss 1507 * so we need to track the count against the 1508 * configured threshold before notifying the 1509 * 802.11 layer. 1510 * XXX try to roam, drop assoc only on much higher count 1511 */ 1512 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) { 1513 DPRINTF(("Beacon miss: %u >= %u\n", 1514 le32toh(beacon->number), 1515 vap->iv_bmissthreshold)); 1516 vap->iv_stats.is_beacon_miss++; 1517 /* 1518 * It's pointless to notify the 802.11 layer 1519 * as it'll try to send a probe request (which 1520 * we'll discard) and then timeout and drop us 1521 * into scan state. Instead tell the firmware 1522 * to disassociate and then on completion we'll 1523 * kick the state machine to scan. 1524 */ 1525 ieee80211_runtask(ic, &sc->sc_disassoctask); 1526 } 1527 } 1528 break; 1529 1530 case IWI_NOTIF_TYPE_CALIBRATION: 1531 case IWI_NOTIF_TYPE_NOISE: 1532 case IWI_NOTIF_TYPE_LINK_QUALITY: 1533 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1534 break; 1535 1536 default: 1537 DPRINTF(("unknown notification type %u flags 0x%x len %u\n", 1538 notif->type, notif->flags, le16toh(notif->len))); 1539 break; 1540 } 1541 } 1542 1543 static void 1544 iwi_rx_intr(struct iwi_softc *sc) 1545 { 1546 struct iwi_rx_data *data; 1547 struct iwi_hdr *hdr; 1548 uint32_t hw; 1549 1550 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1551 1552 for (; sc->rxq.cur != hw;) { 1553 data = &sc->rxq.data[sc->rxq.cur]; 1554 1555 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1556 BUS_DMASYNC_POSTREAD); 1557 1558 hdr = mtod(data->m, struct iwi_hdr *); 1559 1560 switch (hdr->type) { 1561 case IWI_HDR_TYPE_FRAME: 1562 iwi_frame_intr(sc, data, sc->rxq.cur, 1563 (struct iwi_frame *)(hdr + 1)); 1564 break; 1565 1566 case IWI_HDR_TYPE_NOTIF: 1567 iwi_notification_intr(sc, 1568 (struct iwi_notif *)(hdr + 1)); 1569 break; 1570 1571 default: 1572 device_printf(sc->sc_dev, "unknown hdr type %u\n", 1573 hdr->type); 1574 } 1575 1576 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1577 1578 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1579 } 1580 1581 /* tell the firmware what we have processed */ 1582 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1583 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1584 } 1585 1586 static void 1587 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1588 { 1589 struct ifnet *ifp = sc->sc_ifp; 1590 struct iwi_tx_data *data; 1591 uint32_t hw; 1592 1593 hw = CSR_READ_4(sc, txq->csr_ridx); 1594 1595 for (; txq->next != hw;) { 1596 data = &txq->data[txq->next]; 1597 1598 bus_dmamap_sync(txq->data_dmat, data->map, 1599 BUS_DMASYNC_POSTWRITE); 1600 bus_dmamap_unload(txq->data_dmat, data->map); 1601 if (data->m->m_flags & M_TXCB) 1602 ieee80211_process_callback(data->ni, data->m, 0/*XXX*/); 1603 m_freem(data->m); 1604 data->m = NULL; 1605 ieee80211_free_node(data->ni); 1606 data->ni = NULL; 1607 1608 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1609 1610 IFNET_STAT_INC(ifp, opackets, 1); 1611 1612 txq->queued--; 1613 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1614 } 1615 1616 sc->sc_tx_timer = 0; 1617 ifq_clr_oactive(&ifp->if_snd); 1618 1619 if (sc->sc_softled) 1620 iwi_led_event(sc, IWI_LED_TX); 1621 1622 iwi_start_locked(ifp); 1623 } 1624 1625 static void 1626 iwi_fatal_error_intr(struct iwi_softc *sc) 1627 { 1628 struct ifnet *ifp = sc->sc_ifp; 1629 struct ieee80211com *ic = ifp->if_l2com; 1630 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1631 1632 device_printf(sc->sc_dev, "firmware error\n"); 1633 if (vap != NULL) 1634 ieee80211_cancel_scan(vap); 1635 ieee80211_runtask(ic, &sc->sc_restarttask); 1636 1637 sc->flags &= ~IWI_FLAG_BUSY; 1638 sc->sc_busy_timer = 0; 1639 wakeup(sc); 1640 } 1641 1642 static void 1643 iwi_radio_off_intr(struct iwi_softc *sc) 1644 { 1645 struct ifnet *ifp = sc->sc_ifp; 1646 struct ieee80211com *ic = ifp->if_l2com; 1647 1648 ieee80211_runtask(ic, &sc->sc_radiofftask); 1649 } 1650 1651 static void 1652 iwi_intr(void *arg) 1653 { 1654 struct iwi_softc *sc = arg; 1655 uint32_t r; 1656 1657 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) { 1658 return; 1659 } 1660 1661 /* acknowledge interrupts */ 1662 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1663 1664 if (r & IWI_INTR_FATAL_ERROR) { 1665 iwi_fatal_error_intr(sc); 1666 return; 1667 } 1668 1669 if (r & IWI_INTR_FW_INITED) { 1670 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1671 wakeup(sc); 1672 } 1673 1674 if (r & IWI_INTR_RADIO_OFF) 1675 iwi_radio_off_intr(sc); 1676 1677 if (r & IWI_INTR_CMD_DONE) { 1678 sc->flags &= ~IWI_FLAG_BUSY; 1679 sc->sc_busy_timer = 0; 1680 wakeup(sc); 1681 } 1682 1683 if (r & IWI_INTR_TX1_DONE) 1684 iwi_tx_intr(sc, &sc->txq[0]); 1685 1686 if (r & IWI_INTR_TX2_DONE) 1687 iwi_tx_intr(sc, &sc->txq[1]); 1688 1689 if (r & IWI_INTR_TX3_DONE) 1690 iwi_tx_intr(sc, &sc->txq[2]); 1691 1692 if (r & IWI_INTR_TX4_DONE) 1693 iwi_tx_intr(sc, &sc->txq[3]); 1694 1695 if (r & IWI_INTR_RX_DONE) 1696 iwi_rx_intr(sc); 1697 1698 if (r & IWI_INTR_PARITY_ERROR) { 1699 /* XXX rate-limit */ 1700 device_printf(sc->sc_dev, "parity error\n"); 1701 } 1702 } 1703 1704 static int 1705 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len) 1706 { 1707 struct iwi_cmd_desc *desc; 1708 1709 if (sc->flags & IWI_FLAG_BUSY) { 1710 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 1711 __func__, type); 1712 return EAGAIN; 1713 } 1714 1715 sc->flags |= IWI_FLAG_BUSY; 1716 sc->sc_busy_timer = 2; 1717 1718 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1719 1720 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1721 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1722 desc->type = type; 1723 desc->len = len; 1724 memcpy(desc->data, data, len); 1725 1726 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map, 1727 BUS_DMASYNC_PREWRITE); 1728 1729 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1730 type, len)); 1731 1732 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1733 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1734 1735 return zsleep(sc, &wlan_global_serializer, 0, "iwicmd", hz); 1736 } 1737 1738 static void 1739 iwi_write_ibssnode(struct iwi_softc *sc, 1740 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry) 1741 { 1742 struct iwi_ibssnode node; 1743 char ethstr[ETHER_ADDRSTRLEN + 1]; 1744 1745 /* write node information into NIC memory */ 1746 memset(&node, 0, sizeof node); 1747 IEEE80211_ADDR_COPY(node.bssid, addr); 1748 1749 DPRINTF(("%s mac %s station %u\n", __func__, kether_ntoa(node.bssid, ethstr), entry)); 1750 1751 CSR_WRITE_REGION_1(sc, 1752 IWI_CSR_NODE_BASE + entry * sizeof node, 1753 (uint8_t *)&node, sizeof node); 1754 } 1755 1756 static int 1757 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1758 int ac) 1759 { 1760 struct iwi_softc *sc = ifp->if_softc; 1761 struct ieee80211vap *vap = ni->ni_vap; 1762 struct ieee80211com *ic = ni->ni_ic; 1763 struct iwi_node *in = (struct iwi_node *)ni; 1764 const struct ieee80211_frame *wh; 1765 struct ieee80211_key *k; 1766 const struct chanAccParams *cap; 1767 struct iwi_tx_ring *txq = &sc->txq[ac]; 1768 struct iwi_tx_data *data; 1769 struct iwi_tx_desc *desc; 1770 struct mbuf *mnew; 1771 bus_dma_segment_t segs[IWI_MAX_NSEG]; 1772 int error, nsegs, hdrlen, i; 1773 int ismcast, flags, xflags, staid; 1774 1775 wh = mtod(m0, const struct ieee80211_frame *); 1776 /* NB: only data frames use this path */ 1777 hdrlen = ieee80211_hdrsize(wh); 1778 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1779 flags = xflags = 0; 1780 1781 if (!ismcast) 1782 flags |= IWI_DATA_FLAG_NEED_ACK; 1783 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE) 1784 flags |= IWI_DATA_FLAG_SHPREAMBLE; 1785 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1786 xflags |= IWI_DATA_XFLAG_QOS; 1787 cap = &ic->ic_wme.wme_chanParams; 1788 if (!cap->cap_wmeParams[ac].wmep_noackPolicy) 1789 flags &= ~IWI_DATA_FLAG_NEED_ACK; 1790 } 1791 1792 /* 1793 * This is only used in IBSS mode where the firmware expect an index 1794 * in a h/w table instead of a destination address. 1795 */ 1796 if (vap->iv_opmode == IEEE80211_M_IBSS) { 1797 if (!ismcast) { 1798 if (in->in_station == -1) { 1799 in->in_station = devfs_clone_bitmap_get(&sc->sc_unr, 1800 IWI_MAX_IBSSNODE-1); 1801 if (in->in_station == -1) { 1802 /* h/w table is full */ 1803 m_freem(m0); 1804 ieee80211_free_node(ni); 1805 IFNET_STAT_INC(ifp, oerrors, 1); 1806 return 0; 1807 } 1808 iwi_write_ibssnode(sc, 1809 ni->ni_macaddr, in->in_station); 1810 } 1811 staid = in->in_station; 1812 } else { 1813 /* 1814 * Multicast addresses have no associated node 1815 * so there will be no station entry. We reserve 1816 * entry 0 for one mcast address and use that. 1817 * If there are many being used this will be 1818 * expensive and we'll need to do a better job 1819 * but for now this handles the broadcast case. 1820 */ 1821 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) { 1822 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1); 1823 iwi_write_ibssnode(sc, sc->sc_mcast, 0); 1824 } 1825 staid = 0; 1826 } 1827 } else 1828 staid = 0; 1829 1830 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1831 k = ieee80211_crypto_encap(ni, m0); 1832 if (k == NULL) { 1833 m_freem(m0); 1834 return ENOBUFS; 1835 } 1836 1837 /* packet header may have moved, reset our local pointer */ 1838 wh = mtod(m0, struct ieee80211_frame *); 1839 } 1840 1841 if (ieee80211_radiotap_active_vap(vap)) { 1842 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1843 1844 tap->wt_flags = 0; 1845 1846 ieee80211_radiotap_tx(vap, m0); 1847 } 1848 1849 data = &txq->data[txq->cur]; 1850 desc = &txq->desc[txq->cur]; 1851 1852 /* save and trim IEEE802.11 header */ 1853 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh); 1854 m_adj(m0, hdrlen); 1855 1856 error = bus_dmamap_load_mbuf_segment(txq->data_dmat, data->map, 1857 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 1858 if (error != 0 && error != EFBIG) { 1859 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1860 error); 1861 m_freem(m0); 1862 return error; 1863 } 1864 if (error != 0) { 1865 mnew = m_defrag(m0, MB_DONTWAIT); 1866 if (mnew == NULL) { 1867 device_printf(sc->sc_dev, 1868 "could not defragment mbuf\n"); 1869 m_freem(m0); 1870 return ENOBUFS; 1871 } 1872 m0 = mnew; 1873 1874 error = bus_dmamap_load_mbuf_segment(txq->data_dmat, 1875 data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 1876 if (error != 0) { 1877 device_printf(sc->sc_dev, 1878 "could not map mbuf (error %d)\n", error); 1879 m_freem(m0); 1880 return error; 1881 } 1882 } 1883 1884 data->m = m0; 1885 data->ni = ni; 1886 1887 desc->hdr.type = IWI_HDR_TYPE_DATA; 1888 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1889 desc->station = staid; 1890 desc->cmd = IWI_DATA_CMD_TX; 1891 desc->len = htole16(m0->m_pkthdr.len); 1892 desc->flags = flags; 1893 desc->xflags = xflags; 1894 1895 #if 0 1896 if (vap->iv_flags & IEEE80211_F_PRIVACY) 1897 desc->wep_txkey = vap->iv_def_txkey; 1898 else 1899 #endif 1900 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1901 1902 desc->nseg = htole32(nsegs); 1903 for (i = 0; i < nsegs; i++) { 1904 desc->seg_addr[i] = htole32(segs[i].ds_addr); 1905 desc->seg_len[i] = htole16(segs[i].ds_len); 1906 } 1907 1908 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1909 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1910 1911 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1912 ac, txq->cur, le16toh(desc->len), nsegs)); 1913 1914 txq->queued++; 1915 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1916 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1917 1918 return 0; 1919 } 1920 1921 static int 1922 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1923 const struct ieee80211_bpf_params *params) 1924 { 1925 /* no support; just discard */ 1926 m_freem(m); 1927 ieee80211_free_node(ni); 1928 return 0; 1929 } 1930 1931 static void 1932 iwi_start_locked(struct ifnet *ifp) 1933 { 1934 struct iwi_softc *sc = ifp->if_softc; 1935 struct mbuf *m; 1936 struct ieee80211_node *ni; 1937 int ac; 1938 1939 if ((ifp->if_flags & IFF_RUNNING) == 0) 1940 return; 1941 1942 for (;;) { 1943 m = ifq_dequeue(&ifp->if_snd); 1944 if (m == NULL) 1945 break; 1946 ac = M_WME_GETAC(m); 1947 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) { 1948 /* there is no place left in this ring; tail drop */ 1949 /* XXX tail drop */ 1950 ifq_prepend(&ifp->if_snd, m); 1951 ifq_set_oactive(&ifp->if_snd); 1952 break; 1953 } 1954 1955 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1956 if (iwi_tx_start(ifp, m, ni, ac) != 0) { 1957 ieee80211_free_node(ni); 1958 IFNET_STAT_INC(ifp, oerrors, 1); 1959 break; 1960 } 1961 1962 sc->sc_tx_timer = 5; 1963 } 1964 } 1965 1966 static void 1967 iwi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1968 { 1969 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1970 iwi_start_locked(ifp); 1971 } 1972 1973 static void 1974 iwi_watchdog(void *arg) 1975 { 1976 struct iwi_softc *sc = arg; 1977 struct ifnet *ifp = sc->sc_ifp; 1978 struct ieee80211com *ic = ifp->if_l2com; 1979 1980 wlan_serialize_enter(); 1981 if (sc->sc_tx_timer > 0) { 1982 if (--sc->sc_tx_timer == 0) { 1983 if_printf(ifp, "device timeout\n"); 1984 IFNET_STAT_INC(ifp, oerrors, 1); 1985 wlan_serialize_exit(); 1986 ieee80211_runtask(ic, &sc->sc_restarttask); 1987 wlan_serialize_enter(); 1988 } 1989 } 1990 if (sc->sc_state_timer > 0) { 1991 if (--sc->sc_state_timer == 0) { 1992 if_printf(ifp, "firmware stuck in state %d, resetting\n", 1993 sc->fw_state); 1994 if (sc->fw_state == IWI_FW_SCANNING) { 1995 struct ieee80211com *ic = ifp->if_l2com; 1996 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps)); 1997 } 1998 wlan_serialize_exit(); 1999 ieee80211_runtask(ic, &sc->sc_restarttask); 2000 wlan_serialize_enter(); 2001 sc->sc_state_timer = 3; 2002 } 2003 } 2004 if (sc->sc_busy_timer > 0) { 2005 if (--sc->sc_busy_timer == 0) { 2006 if_printf(ifp, "firmware command timeout, resetting\n"); 2007 wlan_serialize_exit(); 2008 ieee80211_runtask(ic, &sc->sc_restarttask); 2009 wlan_serialize_enter(); 2010 } 2011 } 2012 callout_reset(&sc->sc_wdtimer_callout, hz, iwi_watchdog, sc); 2013 wlan_serialize_exit(); 2014 } 2015 2016 static int 2017 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 2018 { 2019 struct iwi_softc *sc = ifp->if_softc; 2020 struct ieee80211com *ic = ifp->if_l2com; 2021 struct ifreq *ifr = (struct ifreq *) data; 2022 int error = 0, startall = 0; 2023 2024 switch (cmd) { 2025 case SIOCSIFFLAGS: 2026 if (ifp->if_flags & IFF_UP) { 2027 if (!(ifp->if_flags & IFF_RUNNING)) { 2028 iwi_init_locked(sc); 2029 startall = 1; 2030 } 2031 } else { 2032 if (ifp->if_flags & IFF_RUNNING) 2033 iwi_stop_locked(sc); 2034 } 2035 if (startall) 2036 ieee80211_start_all(ic); 2037 break; 2038 case SIOCGIFMEDIA: 2039 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2040 break; 2041 case SIOCGIFADDR: 2042 error = ether_ioctl(ifp, cmd, data); 2043 break; 2044 default: 2045 error = EINVAL; 2046 break; 2047 } 2048 return error; 2049 } 2050 2051 static void 2052 iwi_stop_master(struct iwi_softc *sc) 2053 { 2054 uint32_t tmp; 2055 int ntries; 2056 2057 /* disable interrupts */ 2058 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 2059 2060 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 2061 for (ntries = 0; ntries < 5; ntries++) { 2062 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2063 break; 2064 DELAY(10); 2065 } 2066 if (ntries == 5) 2067 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2068 2069 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2070 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 2071 2072 sc->flags &= ~IWI_FLAG_FW_INITED; 2073 } 2074 2075 static int 2076 iwi_reset(struct iwi_softc *sc) 2077 { 2078 uint32_t tmp; 2079 int i, ntries; 2080 2081 iwi_stop_master(sc); 2082 2083 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2084 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2085 2086 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 2087 2088 /* wait for clock stabilization */ 2089 for (ntries = 0; ntries < 1000; ntries++) { 2090 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 2091 break; 2092 DELAY(200); 2093 } 2094 if (ntries == 1000) { 2095 device_printf(sc->sc_dev, 2096 "timeout waiting for clock stabilization\n"); 2097 return EIO; 2098 } 2099 2100 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2101 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET); 2102 2103 DELAY(10); 2104 2105 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2106 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2107 2108 /* clear NIC memory */ 2109 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 2110 for (i = 0; i < 0xc000; i++) 2111 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2112 2113 return 0; 2114 } 2115 2116 static const struct iwi_firmware_ohdr * 2117 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw) 2118 { 2119 const struct firmware *fp = fw->fp; 2120 const struct iwi_firmware_ohdr *hdr; 2121 2122 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) { 2123 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name); 2124 return NULL; 2125 } 2126 hdr = (const struct iwi_firmware_ohdr *)fp->data; 2127 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2128 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2129 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n", 2130 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2131 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR, 2132 IWI_FW_REQ_MINOR); 2133 return NULL; 2134 } 2135 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr); 2136 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr); 2137 fw->name = fp->name; 2138 return hdr; 2139 } 2140 2141 static const struct iwi_firmware_ohdr * 2142 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw) 2143 { 2144 const struct iwi_firmware_ohdr *hdr; 2145 2146 hdr = iwi_setup_ofw(sc, fw); 2147 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) { 2148 device_printf(sc->sc_dev, "%s is not a ucode image\n", 2149 fw->name); 2150 hdr = NULL; 2151 } 2152 return hdr; 2153 } 2154 2155 static void 2156 iwi_getfw(struct iwi_fw *fw, const char *fwname, 2157 struct iwi_fw *uc, const char *ucname) 2158 { 2159 wlan_assert_serialized(); 2160 wlan_serialize_exit(); 2161 if (fw->fp == NULL) 2162 fw->fp = firmware_get(fwname); 2163 2164 /* NB: pre-3.0 ucode is packaged separately */ 2165 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300) 2166 uc->fp = firmware_get(ucname); 2167 wlan_serialize_enter(); 2168 } 2169 2170 /* 2171 * Get the required firmware images if not already loaded. 2172 * Note that we hold firmware images so long as the device 2173 * is marked up in case we need to reload them on device init. 2174 * This is necessary because we re-init the device sometimes 2175 * from a context where we cannot read from the filesystem 2176 * (e.g. from the taskqueue thread when rfkill is re-enabled). 2177 * XXX return 0 on success, 1 on error. 2178 * 2179 * NB: the order of get'ing and put'ing images here is 2180 * intentional to support handling firmware images bundled 2181 * by operating mode and/or all together in one file with 2182 * the boot firmware as "master". 2183 */ 2184 static int 2185 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode) 2186 { 2187 const struct iwi_firmware_hdr *hdr; 2188 const struct firmware *fp; 2189 2190 wlan_serialize_enter(); 2191 2192 /* invalidate cached firmware on mode change */ 2193 if (sc->fw_mode != opmode) 2194 iwi_put_firmware(sc); 2195 2196 switch (opmode) { 2197 case IEEE80211_M_STA: 2198 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss"); 2199 break; 2200 case IEEE80211_M_IBSS: 2201 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss"); 2202 break; 2203 case IEEE80211_M_MONITOR: 2204 iwi_getfw(&sc->fw_fw, "iwi_monitor", 2205 &sc->fw_uc, "iwi_ucode_monitor"); 2206 break; 2207 default: 2208 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 2209 wlan_serialize_exit(); 2210 return EINVAL; 2211 } 2212 fp = sc->fw_fw.fp; 2213 if (fp == NULL) { 2214 device_printf(sc->sc_dev, "could not load firmware\n"); 2215 goto bad; 2216 } 2217 if (fp->version < 300) { 2218 /* 2219 * Firmware prior to 3.0 was packaged as separate 2220 * boot, firmware, and ucode images. Verify the 2221 * ucode image was read in, retrieve the boot image 2222 * if needed, and check version stamps for consistency. 2223 * The version stamps in the data are also checked 2224 * above; this is a bit paranoid but is a cheap 2225 * safeguard against mis-packaging. 2226 */ 2227 if (sc->fw_uc.fp == NULL) { 2228 device_printf(sc->sc_dev, "could not load ucode\n"); 2229 goto bad; 2230 } 2231 if (sc->fw_boot.fp == NULL) { 2232 sc->fw_boot.fp = firmware_get("iwi_boot"); 2233 if (sc->fw_boot.fp == NULL) { 2234 device_printf(sc->sc_dev, 2235 "could not load boot firmware\n"); 2236 goto bad; 2237 } 2238 } 2239 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version || 2240 sc->fw_boot.fp->version != sc->fw_uc.fp->version) { 2241 device_printf(sc->sc_dev, 2242 "firmware version mismatch: " 2243 "'%s' is %d, '%s' is %d, '%s' is %d\n", 2244 sc->fw_boot.fp->name, sc->fw_boot.fp->version, 2245 sc->fw_uc.fp->name, sc->fw_uc.fp->version, 2246 sc->fw_fw.fp->name, sc->fw_fw.fp->version 2247 ); 2248 goto bad; 2249 } 2250 /* 2251 * Check and setup each image. 2252 */ 2253 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL || 2254 iwi_setup_ofw(sc, &sc->fw_boot) == NULL || 2255 iwi_setup_ofw(sc, &sc->fw_fw) == NULL) 2256 goto bad; 2257 } else { 2258 /* 2259 * Check and setup combined image. 2260 */ 2261 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) { 2262 device_printf(sc->sc_dev, "image '%s' too small\n", 2263 fp->name); 2264 goto bad; 2265 } 2266 hdr = (const struct iwi_firmware_hdr *)fp->data; 2267 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize) 2268 + le32toh(hdr->fsize)) { 2269 device_printf(sc->sc_dev, "image '%s' too small (2)\n", 2270 fp->name); 2271 goto bad; 2272 } 2273 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr); 2274 sc->fw_boot.size = le32toh(hdr->bsize); 2275 sc->fw_boot.name = fp->name; 2276 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size; 2277 sc->fw_uc.size = le32toh(hdr->usize); 2278 sc->fw_uc.name = fp->name; 2279 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size; 2280 sc->fw_fw.size = le32toh(hdr->fsize); 2281 sc->fw_fw.name = fp->name; 2282 } 2283 #if 0 2284 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n", 2285 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size); 2286 #endif 2287 2288 sc->fw_mode = opmode; 2289 wlan_serialize_exit(); 2290 return 0; 2291 bad: 2292 iwi_put_firmware(sc); 2293 wlan_serialize_exit(); 2294 return 1; 2295 } 2296 2297 static void 2298 iwi_put_fw(struct iwi_fw *fw) 2299 { 2300 wlan_assert_serialized(); 2301 wlan_serialize_exit(); 2302 if (fw->fp != NULL) { 2303 firmware_put(fw->fp, FIRMWARE_UNLOAD); 2304 fw->fp = NULL; 2305 } 2306 wlan_serialize_enter(); 2307 fw->data = NULL; 2308 fw->size = 0; 2309 fw->name = NULL; 2310 } 2311 2312 /* 2313 * Release any cached firmware images. 2314 */ 2315 static void 2316 iwi_put_firmware(struct iwi_softc *sc) 2317 { 2318 iwi_put_fw(&sc->fw_uc); 2319 iwi_put_fw(&sc->fw_fw); 2320 iwi_put_fw(&sc->fw_boot); 2321 } 2322 2323 static int 2324 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw) 2325 { 2326 uint32_t tmp; 2327 const uint16_t *w; 2328 const char *uc = fw->data; 2329 size_t size = fw->size; 2330 int i, ntries, error; 2331 2332 error = 0; 2333 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 2334 IWI_RST_STOP_MASTER); 2335 for (ntries = 0; ntries < 5; ntries++) { 2336 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2337 break; 2338 DELAY(10); 2339 } 2340 if (ntries == 5) { 2341 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2342 error = EIO; 2343 goto fail; 2344 } 2345 2346 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 2347 DELAY(5000); 2348 2349 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2350 tmp &= ~IWI_RST_PRINCETON_RESET; 2351 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2352 2353 DELAY(5000); 2354 MEM_WRITE_4(sc, 0x3000e0, 0); 2355 DELAY(1000); 2356 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1); 2357 DELAY(1000); 2358 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0); 2359 DELAY(1000); 2360 MEM_WRITE_1(sc, 0x200000, 0x00); 2361 MEM_WRITE_1(sc, 0x200000, 0x40); 2362 DELAY(1000); 2363 2364 /* write microcode into adapter memory */ 2365 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2) 2366 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 2367 2368 MEM_WRITE_1(sc, 0x200000, 0x00); 2369 MEM_WRITE_1(sc, 0x200000, 0x80); 2370 2371 /* wait until we get an answer */ 2372 for (ntries = 0; ntries < 100; ntries++) { 2373 if (MEM_READ_1(sc, 0x200000) & 1) 2374 break; 2375 DELAY(100); 2376 } 2377 if (ntries == 100) { 2378 device_printf(sc->sc_dev, 2379 "timeout waiting for ucode to initialize\n"); 2380 error = EIO; 2381 goto fail; 2382 } 2383 2384 /* read the answer or the firmware will not initialize properly */ 2385 for (i = 0; i < 7; i++) 2386 MEM_READ_4(sc, 0x200004); 2387 2388 MEM_WRITE_1(sc, 0x200000, 0x00); 2389 2390 fail: 2391 return error; 2392 } 2393 2394 /* macro to handle unaligned little endian data in firmware image */ 2395 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2396 2397 static int 2398 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw) 2399 { 2400 u_char *p, *end; 2401 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp; 2402 int ntries, error; 2403 2404 /* copy firmware image to DMA memory */ 2405 memcpy(sc->fw_virtaddr, fw->data, fw->size); 2406 2407 /* make sure the adapter will get up-to-date values */ 2408 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE); 2409 2410 /* tell the adapter where the command blocks are stored */ 2411 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2412 2413 /* 2414 * Store command blocks into adapter's internal memory using register 2415 * indirections. The adapter will read the firmware image through DMA 2416 * using information stored in command blocks. 2417 */ 2418 src = sc->fw_physaddr; 2419 p = sc->fw_virtaddr; 2420 end = p + fw->size; 2421 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2422 2423 while (p < end) { 2424 dst = GETLE32(p); p += 4; src += 4; 2425 len = GETLE32(p); p += 4; src += 4; 2426 p += len; 2427 2428 while (len > 0) { 2429 mlen = min(len, IWI_CB_MAXDATALEN); 2430 2431 ctl = IWI_CB_DEFAULT_CTL | mlen; 2432 sum = ctl ^ src ^ dst; 2433 2434 /* write a command block */ 2435 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2436 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 2437 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 2438 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2439 2440 src += mlen; 2441 dst += mlen; 2442 len -= mlen; 2443 } 2444 } 2445 2446 /* write a fictive final command block (sentinel) */ 2447 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2448 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2449 2450 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2451 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 2452 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2453 2454 /* tell the adapter to start processing command blocks */ 2455 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2456 2457 /* wait until the adapter reaches the sentinel */ 2458 for (ntries = 0; ntries < 400; ntries++) { 2459 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2460 break; 2461 DELAY(100); 2462 } 2463 /* sync dma, just in case */ 2464 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE); 2465 if (ntries == 400) { 2466 device_printf(sc->sc_dev, 2467 "timeout processing command blocks for %s firmware\n", 2468 fw->name); 2469 return EIO; 2470 } 2471 2472 /* we're done with command blocks processing */ 2473 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2474 2475 /* allow interrupts so we know when the firmware is ready */ 2476 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2477 2478 /* tell the adapter to initialize the firmware */ 2479 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2480 2481 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2482 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 2483 2484 /* wait at most one second for firmware initialization to complete */ 2485 error = zsleep(sc, &wlan_global_serializer, 0, "iwiinit", hz); 2486 if (error != 0) { 2487 device_printf(sc->sc_dev, "timeout waiting for firmware " 2488 "initialization to complete\n"); 2489 } 2490 2491 return error; 2492 } 2493 2494 static int 2495 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap) 2496 { 2497 uint32_t data; 2498 2499 if (vap->iv_flags & IEEE80211_F_PMGTON) { 2500 /* XXX set more fine-grained operation */ 2501 data = htole32(IWI_POWER_MODE_MAX); 2502 } else 2503 data = htole32(IWI_POWER_MODE_CAM); 2504 2505 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2506 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data); 2507 } 2508 2509 static int 2510 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap) 2511 { 2512 struct iwi_wep_key wepkey; 2513 struct ieee80211_key *wk; 2514 int error, i; 2515 2516 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2517 wk = &vap->iv_nw_keys[i]; 2518 2519 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2520 wepkey.idx = i; 2521 wepkey.len = wk->wk_keylen; 2522 memset(wepkey.key, 0, sizeof wepkey.key); 2523 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2524 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2525 wepkey.len)); 2526 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2527 sizeof wepkey); 2528 if (error != 0) 2529 return error; 2530 } 2531 return 0; 2532 } 2533 2534 static int 2535 iwi_config(struct iwi_softc *sc) 2536 { 2537 struct ifnet *ifp = sc->sc_ifp; 2538 struct ieee80211com *ic = ifp->if_l2com; 2539 struct iwi_configuration config; 2540 struct iwi_rateset rs; 2541 struct iwi_txpower power; 2542 uint32_t data; 2543 int error, i; 2544 const uint8_t *eaddr = IF_LLADDR(ifp); 2545 char ethstr[ETHER_ADDRSTRLEN + 1]; 2546 2547 DPRINTF(("Setting MAC address to %s\n", kether_ntoa(eaddr, ethstr))); 2548 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp), 2549 IEEE80211_ADDR_LEN); 2550 if (error != 0) 2551 return error; 2552 2553 memset(&config, 0, sizeof config); 2554 config.bluetooth_coexistence = sc->bluetooth; 2555 config.silence_threshold = 0x1e; 2556 config.antenna = sc->antenna; 2557 config.multicast_enabled = 1; 2558 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2559 config.disable_unicast_decryption = 1; 2560 config.disable_multicast_decryption = 1; 2561 DPRINTF(("Configuring adapter\n")); 2562 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2563 if (error != 0) 2564 return error; 2565 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2566 power.mode = IWI_MODE_11B; 2567 power.nchan = 11; 2568 for (i = 0; i < 11; i++) { 2569 power.chan[i].chan = i + 1; 2570 power.chan[i].power = IWI_TXPOWER_MAX; 2571 } 2572 DPRINTF(("Setting .11b channels tx power\n")); 2573 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2574 if (error != 0) 2575 return error; 2576 2577 power.mode = IWI_MODE_11G; 2578 DPRINTF(("Setting .11g channels tx power\n")); 2579 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2580 if (error != 0) 2581 return error; 2582 } 2583 2584 memset(&rs, 0, sizeof rs); 2585 rs.mode = IWI_MODE_11G; 2586 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2587 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2588 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2589 rs.nrates); 2590 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2591 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2592 if (error != 0) 2593 return error; 2594 2595 memset(&rs, 0, sizeof rs); 2596 rs.mode = IWI_MODE_11A; 2597 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2598 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2599 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2600 rs.nrates); 2601 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2602 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2603 if (error != 0) 2604 return error; 2605 2606 data = htole32(karc4random()); 2607 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2608 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data); 2609 if (error != 0) 2610 return error; 2611 2612 /* enable adapter */ 2613 DPRINTF(("Enabling adapter\n")); 2614 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0); 2615 } 2616 2617 static __inline void 2618 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type) 2619 { 2620 uint8_t *st = &scan->scan_type[ix / 2]; 2621 if (ix % 2) 2622 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0); 2623 else 2624 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4); 2625 } 2626 2627 static int 2628 scan_type(const struct ieee80211_scan_state *ss, 2629 const struct ieee80211_channel *chan) 2630 { 2631 /* We can only set one essid for a directed scan */ 2632 if (ss->ss_nssid != 0) 2633 return IWI_SCAN_TYPE_BDIRECTED; 2634 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) && 2635 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) 2636 return IWI_SCAN_TYPE_BROADCAST; 2637 return IWI_SCAN_TYPE_PASSIVE; 2638 } 2639 2640 static __inline int 2641 scan_band(const struct ieee80211_channel *c) 2642 { 2643 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ; 2644 } 2645 2646 /* 2647 * Start a scan on the current channel or all channels. 2648 */ 2649 static int 2650 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan) 2651 { 2652 struct ieee80211com *ic; 2653 struct ieee80211_channel *chan; 2654 struct ieee80211_scan_state *ss; 2655 struct iwi_scan_ext scan; 2656 int error = 0; 2657 2658 if (sc->fw_state == IWI_FW_SCANNING) { 2659 /* 2660 * This should not happen as we only trigger scan_next after 2661 * completion 2662 */ 2663 DPRINTF(("%s: called too early - still scanning\n", __func__)); 2664 return (EBUSY); 2665 } 2666 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING); 2667 2668 ic = sc->sc_ifp->if_l2com; 2669 ss = ic->ic_scan; 2670 2671 memset(&scan, 0, sizeof scan); 2672 scan.full_scan_index = htole32(++sc->sc_scangen); 2673 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell); 2674 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) { 2675 /* 2676 * Use very short dwell times for when we send probe request 2677 * frames. Without this bg scans hang. Ideally this should 2678 * be handled with early-termination as done by net80211 but 2679 * that's not feasible (aborting a scan is problematic). 2680 */ 2681 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30); 2682 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30); 2683 } else { 2684 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell); 2685 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell); 2686 } 2687 2688 /* We can only set one essid for a directed scan */ 2689 if (ss->ss_nssid != 0) { 2690 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid, 2691 ss->ss_ssid[0].len); 2692 if (error) 2693 return (error); 2694 } 2695 2696 if (allchan) { 2697 int i, next, band, b, bstart; 2698 /* 2699 * Convert scan list to run-length encoded channel list 2700 * the firmware requires (preserving the order setup by 2701 * net80211). The first entry in each run specifies the 2702 * band and the count of items in the run. 2703 */ 2704 next = 0; /* next open slot */ 2705 bstart = 0; /* NB: not needed, silence compiler */ 2706 band = -1; /* NB: impossible value */ 2707 KASSERT(ss->ss_last > 0, ("no channels")); 2708 for (i = 0; i < ss->ss_last; i++) { 2709 chan = ss->ss_chans[i]; 2710 b = scan_band(chan); 2711 if (b != band) { 2712 if (band != -1) 2713 scan.channels[bstart] = 2714 (next - bstart) | band; 2715 /* NB: this allocates a slot for the run-len */ 2716 band = b, bstart = next++; 2717 } 2718 if (next >= IWI_SCAN_CHANNELS) { 2719 DPRINTF(("truncating scan list\n")); 2720 break; 2721 } 2722 scan.channels[next] = ieee80211_chan2ieee(ic, chan); 2723 set_scan_type(&scan, next, scan_type(ss, chan)); 2724 next++; 2725 } 2726 scan.channels[bstart] = (next - bstart) | band; 2727 } else { 2728 /* Scan the current channel only */ 2729 chan = ic->ic_curchan; 2730 scan.channels[0] = 1 | scan_band(chan); 2731 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2732 set_scan_type(&scan, 1, scan_type(ss, chan)); 2733 } 2734 #ifdef IWI_DEBUG 2735 if (iwi_debug > 0) { 2736 static const char *scantype[8] = 2737 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" }; 2738 int i; 2739 kprintf("Scan request: index %u dwell %d/%d/%d\n" 2740 , le32toh(scan.full_scan_index) 2741 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE]) 2742 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST]) 2743 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED]) 2744 ); 2745 i = 0; 2746 do { 2747 int run = scan.channels[i]; 2748 if (run == 0) 2749 break; 2750 kprintf("Scan %d %s channels:", run & 0x3f, 2751 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz"); 2752 for (run &= 0x3f, i++; run > 0; run--, i++) { 2753 uint8_t type = scan.scan_type[i/2]; 2754 kprintf(" %u/%s", scan.channels[i], 2755 scantype[(i & 1 ? type : type>>4) & 7]); 2756 } 2757 kprintf("\n"); 2758 } while (i < IWI_SCAN_CHANNELS); 2759 } 2760 #endif 2761 2762 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan)); 2763 } 2764 2765 static int 2766 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm) 2767 { 2768 struct iwi_sensitivity sens; 2769 2770 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm)); 2771 2772 memset(&sens, 0, sizeof sens); 2773 sens.rssi = htole16(rssi_dbm); 2774 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens); 2775 } 2776 2777 static int 2778 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap) 2779 { 2780 struct ieee80211com *ic = vap->iv_ic; 2781 struct ifnet *ifp = vap->iv_ifp; 2782 struct ieee80211_node *ni = vap->iv_bss; 2783 struct iwi_configuration config; 2784 struct iwi_associate *assoc = &sc->assoc; 2785 struct iwi_rateset rs; 2786 uint16_t capinfo; 2787 uint32_t data; 2788 int error, mode; 2789 char ethstr[2][ETHER_ADDRSTRLEN + 1]; 2790 2791 if (sc->flags & IWI_FLAG_ASSOCIATED) { 2792 DPRINTF(("Already associated\n")); 2793 return (-1); 2794 } 2795 2796 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING); 2797 error = 0; 2798 mode = 0; 2799 2800 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) 2801 mode = IWI_MODE_11A; 2802 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan)) 2803 mode = IWI_MODE_11G; 2804 if (IEEE80211_IS_CHAN_B(ic->ic_curchan)) 2805 mode = IWI_MODE_11B; 2806 2807 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2808 memset(&config, 0, sizeof config); 2809 config.bluetooth_coexistence = sc->bluetooth; 2810 config.antenna = sc->antenna; 2811 config.multicast_enabled = 1; 2812 if (mode == IWI_MODE_11G) 2813 config.use_protection = 1; 2814 config.answer_pbreq = 2815 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2816 config.disable_unicast_decryption = 1; 2817 config.disable_multicast_decryption = 1; 2818 DPRINTF(("Configuring adapter\n")); 2819 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2820 if (error != 0) 2821 goto done; 2822 } 2823 2824 #ifdef IWI_DEBUG 2825 if (iwi_debug > 0) { 2826 kprintf("Setting ESSID to "); 2827 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2828 kprintf("\n"); 2829 } 2830 #endif 2831 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen); 2832 if (error != 0) 2833 goto done; 2834 2835 error = iwi_setpowermode(sc, vap); 2836 if (error != 0) 2837 goto done; 2838 2839 data = htole32(vap->iv_rtsthreshold); 2840 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2841 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2842 if (error != 0) 2843 goto done; 2844 2845 data = htole32(vap->iv_fragthreshold); 2846 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2847 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2848 if (error != 0) 2849 goto done; 2850 2851 /* the rate set has already been "negotiated" */ 2852 memset(&rs, 0, sizeof rs); 2853 rs.mode = mode; 2854 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2855 rs.nrates = ni->ni_rates.rs_nrates; 2856 if (rs.nrates > IWI_RATESET_SIZE) { 2857 DPRINTF(("Truncating negotiated rate set from %u\n", 2858 rs.nrates)); 2859 rs.nrates = IWI_RATESET_SIZE; 2860 } 2861 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2862 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2863 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2864 if (error != 0) 2865 goto done; 2866 2867 memset(assoc, 0, sizeof *assoc); 2868 2869 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) { 2870 /* NB: don't treat WME setup as failure */ 2871 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0) 2872 assoc->policy |= htole16(IWI_POLICY_WME); 2873 /* XXX complain on failure? */ 2874 } 2875 2876 if (vap->iv_appie_wpa != NULL) { 2877 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2878 2879 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len)); 2880 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len); 2881 if (error != 0) 2882 goto done; 2883 } 2884 2885 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni)); 2886 if (error != 0) 2887 goto done; 2888 2889 assoc->mode = mode; 2890 assoc->chan = ic->ic_curchan->ic_ieee; 2891 /* 2892 * NB: do not arrange for shared key auth w/o privacy 2893 * (i.e. a wep key); it causes a firmware error. 2894 */ 2895 if ((vap->iv_flags & IEEE80211_F_PRIVACY) && 2896 ni->ni_authmode == IEEE80211_AUTH_SHARED) { 2897 assoc->auth = IWI_AUTH_SHARED; 2898 /* 2899 * It's possible to have privacy marked but no default 2900 * key setup. This typically is due to a user app bug 2901 * but if we blindly grab the key the firmware will 2902 * barf so avoid it for now. 2903 */ 2904 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) 2905 assoc->auth |= vap->iv_def_txkey << 4; 2906 2907 error = iwi_setwepkeys(sc, vap); 2908 if (error != 0) 2909 goto done; 2910 } 2911 if (vap->iv_flags & IEEE80211_F_WPA) 2912 assoc->policy |= htole16(IWI_POLICY_WPA); 2913 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2914 assoc->type = IWI_HC_IBSS_START; 2915 else 2916 assoc->type = IWI_HC_ASSOC; 2917 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8); 2918 2919 if (vap->iv_opmode == IEEE80211_M_IBSS) 2920 capinfo = IEEE80211_CAPINFO_IBSS; 2921 else 2922 capinfo = IEEE80211_CAPINFO_ESS; 2923 if (vap->iv_flags & IEEE80211_F_PRIVACY) 2924 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2925 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2926 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 2927 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2928 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 2929 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2930 assoc->capinfo = htole16(capinfo); 2931 2932 assoc->lintval = htole16(ic->ic_lintval); 2933 assoc->intval = htole16(ni->ni_intval); 2934 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid); 2935 if (vap->iv_opmode == IEEE80211_M_IBSS) 2936 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr); 2937 else 2938 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid); 2939 2940 DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x " 2941 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2942 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join", 2943 kether_ntoa(assoc->bssid, ethstr[0]), kether_ntoa(assoc->dst, ethstr[1]), 2944 assoc->chan, le16toh(assoc->policy), assoc->auth, 2945 le16toh(assoc->capinfo), le16toh(assoc->lintval), 2946 le16toh(assoc->intval))); 2947 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2948 done: 2949 if (error) 2950 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 2951 2952 return (error); 2953 } 2954 2955 static void 2956 iwi_disassoc_task(void *arg, int pending) 2957 { 2958 struct iwi_softc *sc = arg; 2959 2960 wlan_serialize_enter(); 2961 iwi_disassociate(sc, 0); 2962 wlan_serialize_exit(); 2963 } 2964 2965 static int 2966 iwi_disassociate(struct iwi_softc *sc, int quiet) 2967 { 2968 struct iwi_associate *assoc = &sc->assoc; 2969 char ethstr[ETHER_ADDRSTRLEN + 1]; 2970 2971 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) { 2972 DPRINTF(("Not associated\n")); 2973 return (-1); 2974 } 2975 2976 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING); 2977 2978 if (quiet) 2979 assoc->type = IWI_HC_DISASSOC_QUIET; 2980 else 2981 assoc->type = IWI_HC_DISASSOC; 2982 2983 DPRINTF(("Trying to disassociate from %s channel %u\n", 2984 kether_ntoa(assoc->bssid, ethstr), assoc->chan)); 2985 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2986 } 2987 2988 /* 2989 * release dma resources for the firmware 2990 */ 2991 static void 2992 iwi_release_fw_dma(struct iwi_softc *sc) 2993 { 2994 if (sc->fw_flags & IWI_FW_HAVE_PHY) 2995 bus_dmamap_unload(sc->fw_dmat, sc->fw_map); 2996 if (sc->fw_flags & IWI_FW_HAVE_MAP) 2997 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map); 2998 if (sc->fw_flags & IWI_FW_HAVE_DMAT) 2999 bus_dma_tag_destroy(sc->fw_dmat); 3000 3001 sc->fw_flags = 0; 3002 sc->fw_dma_size = 0; 3003 sc->fw_dmat = NULL; 3004 sc->fw_map = NULL; 3005 sc->fw_physaddr = 0; 3006 sc->fw_virtaddr = NULL; 3007 } 3008 3009 /* 3010 * allocate the dma descriptor for the firmware. 3011 * Return 0 on success, 1 on error. 3012 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING. 3013 */ 3014 static int 3015 iwi_init_fw_dma(struct iwi_softc *sc, int size) 3016 { 3017 if (sc->fw_dma_size >= size) 3018 return 0; 3019 if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 3020 BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, 3021 0, &sc->fw_dmat) != 0) { 3022 device_printf(sc->sc_dev, 3023 "could not create firmware DMA tag\n"); 3024 goto error; 3025 } 3026 sc->fw_flags |= IWI_FW_HAVE_DMAT; 3027 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0, 3028 &sc->fw_map) != 0) { 3029 device_printf(sc->sc_dev, 3030 "could not allocate firmware DMA memory\n"); 3031 goto error; 3032 } 3033 sc->fw_flags |= IWI_FW_HAVE_MAP; 3034 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr, 3035 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) { 3036 device_printf(sc->sc_dev, "could not load firmware DMA map\n"); 3037 goto error; 3038 } 3039 sc->fw_flags |= IWI_FW_HAVE_PHY; 3040 sc->fw_dma_size = size; 3041 return 0; 3042 3043 error: 3044 iwi_release_fw_dma(sc); 3045 return 1; 3046 } 3047 3048 static void 3049 iwi_init_locked(struct iwi_softc *sc) 3050 { 3051 struct ifnet *ifp = sc->sc_ifp; 3052 struct iwi_rx_data *data; 3053 int i; 3054 3055 if (sc->fw_state == IWI_FW_LOADING) { 3056 device_printf(sc->sc_dev, "%s: already loading\n", __func__); 3057 return; /* XXX: condvar? */ 3058 } 3059 3060 iwi_stop_locked(sc); 3061 3062 IWI_STATE_BEGIN(sc, IWI_FW_LOADING); 3063 3064 if (iwi_reset(sc) != 0) { 3065 device_printf(sc->sc_dev, "could not reset adapter\n"); 3066 goto fail; 3067 } 3068 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) { 3069 device_printf(sc->sc_dev, 3070 "could not load boot firmware %s\n", sc->fw_boot.name); 3071 goto fail; 3072 } 3073 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) { 3074 device_printf(sc->sc_dev, 3075 "could not load microcode %s\n", sc->fw_uc.name); 3076 goto fail; 3077 } 3078 3079 iwi_stop_master(sc); 3080 3081 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr); 3082 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 3083 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 3084 3085 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr); 3086 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 3087 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 3088 3089 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr); 3090 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 3091 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 3092 3093 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr); 3094 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 3095 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 3096 3097 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr); 3098 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 3099 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 3100 3101 for (i = 0; i < sc->rxq.count; i++) { 3102 data = &sc->rxq.data[i]; 3103 CSR_WRITE_4(sc, data->reg, data->physaddr); 3104 } 3105 3106 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1); 3107 3108 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) { 3109 device_printf(sc->sc_dev, 3110 "could not load main firmware %s\n", sc->fw_fw.name); 3111 goto fail; 3112 } 3113 sc->flags |= IWI_FLAG_FW_INITED; 3114 3115 IWI_STATE_END(sc, IWI_FW_LOADING); 3116 3117 if (iwi_config(sc) != 0) { 3118 device_printf(sc->sc_dev, "unable to enable adapter\n"); 3119 goto fail2; 3120 } 3121 3122 callout_reset(&sc->sc_wdtimer_callout, hz, iwi_watchdog, sc); 3123 ifq_clr_oactive(&ifp->if_snd); 3124 ifp->if_flags |= IFF_RUNNING; 3125 return; 3126 fail: 3127 IWI_STATE_END(sc, IWI_FW_LOADING); 3128 fail2: 3129 iwi_stop_locked(sc); 3130 } 3131 3132 static void 3133 iwi_init(void *priv) 3134 { 3135 struct iwi_softc *sc = priv; 3136 struct ifnet *ifp = sc->sc_ifp; 3137 struct ieee80211com *ic = ifp->if_l2com; 3138 3139 iwi_init_locked(sc); 3140 3141 if (ifp->if_flags & IFF_RUNNING) 3142 ieee80211_start_all(ic); 3143 } 3144 3145 static void 3146 iwi_stop_locked(void *priv) 3147 { 3148 struct iwi_softc *sc = priv; 3149 struct ifnet *ifp = sc->sc_ifp; 3150 3151 ifp->if_flags &= ~IFF_RUNNING; 3152 ifq_clr_oactive(&ifp->if_snd); 3153 3154 if (sc->sc_softled) { 3155 callout_stop(&sc->sc_ledtimer_callout); 3156 sc->sc_blinking = 0; 3157 } 3158 callout_stop(&sc->sc_wdtimer_callout); 3159 callout_stop(&sc->sc_rftimer_callout); 3160 3161 iwi_stop_master(sc); 3162 3163 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET); 3164 3165 /* reset rings */ 3166 iwi_reset_cmd_ring(sc, &sc->cmdq); 3167 iwi_reset_tx_ring(sc, &sc->txq[0]); 3168 iwi_reset_tx_ring(sc, &sc->txq[1]); 3169 iwi_reset_tx_ring(sc, &sc->txq[2]); 3170 iwi_reset_tx_ring(sc, &sc->txq[3]); 3171 iwi_reset_rx_ring(sc, &sc->rxq); 3172 3173 sc->sc_tx_timer = 0; 3174 sc->sc_state_timer = 0; 3175 sc->sc_busy_timer = 0; 3176 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED); 3177 sc->fw_state = IWI_FW_IDLE; 3178 wakeup(sc); 3179 } 3180 3181 static void 3182 iwi_stop(struct iwi_softc *sc) 3183 { 3184 iwi_stop_locked(sc); 3185 } 3186 3187 static void 3188 iwi_restart_task(void *arg, int npending) 3189 { 3190 struct iwi_softc *sc = arg; 3191 3192 wlan_serialize_enter(); 3193 iwi_init(sc); 3194 wlan_serialize_exit(); 3195 } 3196 3197 /* 3198 * Return whether or not the radio is enabled in hardware 3199 * (i.e. the rfkill switch is "off"). 3200 */ 3201 static int 3202 iwi_getrfkill(struct iwi_softc *sc) 3203 { 3204 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 3205 } 3206 3207 static void 3208 iwi_radio_on_task(void *arg, int pending) 3209 { 3210 struct iwi_softc *sc = arg; 3211 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3212 3213 wlan_serialize_enter(); 3214 device_printf(sc->sc_dev, "radio turned on\n"); 3215 3216 iwi_init(sc); 3217 ieee80211_notify_radio(ic, 1); 3218 wlan_serialize_exit(); 3219 } 3220 3221 static void 3222 iwi_rfkill_poll(void *arg) 3223 { 3224 struct iwi_softc *sc = arg; 3225 3226 /* 3227 * Check for a change in rfkill state. We get an 3228 * interrupt when a radio is disabled but not when 3229 * it is enabled so we must poll for the latter. 3230 */ 3231 if (!iwi_getrfkill(sc)) { 3232 struct ifnet *ifp = sc->sc_ifp; 3233 struct ieee80211com *ic = ifp->if_l2com; 3234 3235 ieee80211_runtask(ic, &sc->sc_radiontask); 3236 return; 3237 } 3238 callout_reset(&sc->sc_rftimer_callout, 2*hz, iwi_rfkill_poll, sc); 3239 } 3240 3241 static void 3242 iwi_radio_off_task(void *arg, int pending) 3243 { 3244 struct iwi_softc *sc = arg; 3245 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3246 3247 wlan_serialize_enter(); 3248 device_printf(sc->sc_dev, "radio turned off\n"); 3249 3250 ieee80211_notify_radio(ic, 0); 3251 3252 iwi_stop_locked(sc); 3253 iwi_rfkill_poll(sc); 3254 wlan_serialize_exit(); 3255 } 3256 3257 static int 3258 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS) 3259 { 3260 struct iwi_softc *sc = arg1; 3261 uint32_t size, buf[128]; 3262 3263 memset(buf, 0, sizeof buf); 3264 3265 if (!(sc->flags & IWI_FLAG_FW_INITED)) 3266 return SYSCTL_OUT(req, buf, sizeof buf); 3267 3268 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 3269 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 3270 3271 return SYSCTL_OUT(req, buf, size); 3272 } 3273 3274 static int 3275 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS) 3276 { 3277 struct iwi_softc *sc = arg1; 3278 int val = !iwi_getrfkill(sc); 3279 3280 return SYSCTL_OUT(req, &val, sizeof val); 3281 } 3282 3283 /* 3284 * Add sysctl knobs. 3285 */ 3286 static void 3287 iwi_sysctlattach(struct iwi_softc *sc) 3288 { 3289 struct sysctl_ctx_list *ctx; 3290 struct sysctl_oid *tree; 3291 3292 ctx = &sc->sc_sysctl_ctx; 3293 sysctl_ctx_init(ctx); 3294 3295 tree = SYSCTL_ADD_NODE(ctx, SYSCTL_STATIC_CHILDREN(_hw), 3296 OID_AUTO, 3297 device_get_nameunit(sc->sc_dev), 3298 CTLFLAG_RD, 0, ""); 3299 if (tree == NULL) { 3300 device_printf(sc->sc_dev, "can't add sysctl node\n"); 3301 return; 3302 } 3303 3304 sc->sc_sysctl_tree = tree; 3305 3306 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio", 3307 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I", 3308 "radio transmitter switch state (0=off, 1=on)"); 3309 3310 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats", 3311 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S", 3312 "statistics"); 3313 3314 sc->bluetooth = 0; 3315 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth", 3316 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence"); 3317 3318 sc->antenna = IWI_ANTENNA_AUTO; 3319 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna", 3320 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)"); 3321 } 3322 3323 /* 3324 * LED support. 3325 * 3326 * Different cards have different capabilities. Some have three 3327 * led's while others have only one. The linux ipw driver defines 3328 * led's for link state (associated or not), band (11a, 11g, 11b), 3329 * and for link activity. We use one led and vary the blink rate 3330 * according to the tx/rx traffic a la the ath driver. 3331 */ 3332 3333 static __inline uint32_t 3334 iwi_toggle_event(uint32_t r) 3335 { 3336 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA | 3337 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA); 3338 } 3339 3340 static uint32_t 3341 iwi_read_event(struct iwi_softc *sc) 3342 { 3343 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT); 3344 } 3345 3346 static void 3347 iwi_write_event(struct iwi_softc *sc, uint32_t v) 3348 { 3349 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v); 3350 } 3351 3352 static void 3353 iwi_led_done(void *arg) 3354 { 3355 struct iwi_softc *sc = arg; 3356 3357 sc->sc_blinking = 0; 3358 } 3359 3360 /* 3361 * Turn the activity LED off: flip the pin and then set a timer so no 3362 * update will happen for the specified duration. 3363 */ 3364 static void 3365 iwi_led_off(void *arg) 3366 { 3367 struct iwi_softc *sc = arg; 3368 uint32_t v; 3369 3370 v = iwi_read_event(sc); 3371 v &= ~sc->sc_ledpin; 3372 iwi_write_event(sc, iwi_toggle_event(v)); 3373 callout_reset(&sc->sc_ledtimer_callout, sc->sc_ledoff, iwi_led_done, sc); 3374 } 3375 3376 /* 3377 * Blink the LED according to the specified on/off times. 3378 */ 3379 static void 3380 iwi_led_blink(struct iwi_softc *sc, int on, int off) 3381 { 3382 uint32_t v; 3383 3384 v = iwi_read_event(sc); 3385 v |= sc->sc_ledpin; 3386 iwi_write_event(sc, iwi_toggle_event(v)); 3387 sc->sc_blinking = 1; 3388 sc->sc_ledoff = off; 3389 callout_reset(&sc->sc_ledtimer_callout, on, iwi_led_off, sc); 3390 } 3391 3392 static void 3393 iwi_led_event(struct iwi_softc *sc, int event) 3394 { 3395 /* NB: on/off times from the Atheros NDIS driver, w/ permission */ 3396 static const struct { 3397 u_int rate; /* tx/rx iwi rate */ 3398 u_int16_t timeOn; /* LED on time (ms) */ 3399 u_int16_t timeOff; /* LED off time (ms) */ 3400 } blinkrates[] = { 3401 { IWI_RATE_OFDM54, 40, 10 }, 3402 { IWI_RATE_OFDM48, 44, 11 }, 3403 { IWI_RATE_OFDM36, 50, 13 }, 3404 { IWI_RATE_OFDM24, 57, 14 }, 3405 { IWI_RATE_OFDM18, 67, 16 }, 3406 { IWI_RATE_OFDM12, 80, 20 }, 3407 { IWI_RATE_DS11, 100, 25 }, 3408 { IWI_RATE_OFDM9, 133, 34 }, 3409 { IWI_RATE_OFDM6, 160, 40 }, 3410 { IWI_RATE_DS5, 200, 50 }, 3411 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */ 3412 { IWI_RATE_DS2, 267, 66 }, 3413 { IWI_RATE_DS1, 400, 100 }, 3414 { 0, 500, 130 }, /* unknown rate/polling */ 3415 }; 3416 uint32_t txrate; 3417 int j = 0; /* XXX silence compiler */ 3418 3419 sc->sc_ledevent = ticks; /* time of last event */ 3420 if (sc->sc_blinking) /* don't interrupt active blink */ 3421 return; 3422 switch (event) { 3423 case IWI_LED_POLL: 3424 j = NELEM(blinkrates)-1; 3425 break; 3426 case IWI_LED_TX: 3427 /* read current transmission rate from adapter */ 3428 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 3429 if (blinkrates[sc->sc_txrix].rate != txrate) { 3430 for (j = 0; j < NELEM(blinkrates)-1; j++) 3431 if (blinkrates[j].rate == txrate) 3432 break; 3433 sc->sc_txrix = j; 3434 } else 3435 j = sc->sc_txrix; 3436 break; 3437 case IWI_LED_RX: 3438 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) { 3439 for (j = 0; j < NELEM(blinkrates)-1; j++) 3440 if (blinkrates[j].rate == sc->sc_rxrate) 3441 break; 3442 sc->sc_rxrix = j; 3443 } else 3444 j = sc->sc_rxrix; 3445 break; 3446 } 3447 /* XXX beware of overflow */ 3448 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000, 3449 (blinkrates[j].timeOff * hz) / 1000); 3450 } 3451 3452 static int 3453 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS) 3454 { 3455 struct iwi_softc *sc = arg1; 3456 int softled = sc->sc_softled; 3457 int error; 3458 3459 error = sysctl_handle_int(oidp, &softled, 0, req); 3460 if (error || !req->newptr) 3461 return error; 3462 softled = (softled != 0); 3463 if (softled != sc->sc_softled) { 3464 if (softled) { 3465 uint32_t v = iwi_read_event(sc); 3466 v &= ~sc->sc_ledpin; 3467 iwi_write_event(sc, iwi_toggle_event(v)); 3468 } 3469 sc->sc_softled = softled; 3470 } 3471 return 0; 3472 } 3473 3474 static void 3475 iwi_ledattach(struct iwi_softc *sc) 3476 { 3477 struct sysctl_ctx_list *ctx = &sc->sc_sysctl_ctx; 3478 struct sysctl_oid *tree = sc->sc_sysctl_tree; 3479 3480 sc->sc_blinking = 0; 3481 sc->sc_ledstate = 1; 3482 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */ 3483 callout_init(&sc->sc_ledtimer_callout); 3484 3485 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3486 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 3487 iwi_sysctl_softled, "I", "enable/disable software LED support"); 3488 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3489 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0, 3490 "pin setting to turn activity LED on"); 3491 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3492 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0, 3493 "idle time for inactivity LED (ticks)"); 3494 /* XXX for debugging */ 3495 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3496 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0, 3497 "NIC type from EEPROM"); 3498 3499 sc->sc_ledpin = IWI_RST_LED_ACTIVITY; 3500 sc->sc_softled = 1; 3501 3502 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff; 3503 if (sc->sc_nictype == 1) { 3504 /* 3505 * NB: led's are reversed. 3506 */ 3507 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED; 3508 } 3509 } 3510 3511 static void 3512 iwi_scan_start(struct ieee80211com *ic) 3513 { 3514 /* ignore */ 3515 } 3516 3517 static void 3518 iwi_set_channel(struct ieee80211com *ic) 3519 { 3520 struct ifnet *ifp = ic->ic_ifp; 3521 struct iwi_softc *sc = ifp->if_softc; 3522 if (sc->fw_state == IWI_FW_IDLE) 3523 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee); 3524 } 3525 3526 static void 3527 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3528 { 3529 struct ieee80211vap *vap = ss->ss_vap; 3530 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3531 struct iwi_softc *sc = ifp->if_softc; 3532 3533 if (iwi_scanchan(sc, maxdwell, 0)) 3534 ieee80211_cancel_scan(vap); 3535 } 3536 3537 static void 3538 iwi_scan_mindwell(struct ieee80211_scan_state *ss) 3539 { 3540 /* NB: don't try to abort scan; wait for firmware to finish */ 3541 } 3542 3543 static void 3544 iwi_scan_end(struct ieee80211com *ic) 3545 { 3546 struct ifnet *ifp = ic->ic_ifp; 3547 struct iwi_softc *sc = ifp->if_softc; 3548 3549 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN; 3550 /* NB: make sure we're still scanning */ 3551 if (sc->fw_state == IWI_FW_SCANNING) 3552 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0); 3553 } 3554