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_free(ifp); 496 497 wlan_serialize_exit(); 498 return 0; 499 } 500 501 static struct ieee80211vap * 502 iwi_vap_create(struct ieee80211com *ic, 503 const char name[IFNAMSIZ], int unit, 504 enum ieee80211_opmode opmode, int flags, 505 const uint8_t bssid[IEEE80211_ADDR_LEN], 506 const uint8_t mac[IEEE80211_ADDR_LEN]) 507 { 508 struct ifnet *ifp = ic->ic_ifp; 509 struct iwi_softc *sc = ifp->if_softc; 510 struct iwi_vap *ivp; 511 struct ieee80211vap *vap; 512 int i; 513 514 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 515 return NULL; 516 /* 517 * Get firmware image (and possibly dma memory) on mode change. 518 */ 519 if (iwi_get_firmware(sc, opmode)) 520 return NULL; 521 /* allocate DMA memory for mapping firmware image */ 522 i = sc->fw_fw.size; 523 if (sc->fw_boot.size > i) 524 i = sc->fw_boot.size; 525 /* XXX do we dma the ucode as well ? */ 526 if (sc->fw_uc.size > i) 527 i = sc->fw_uc.size; 528 if (iwi_init_fw_dma(sc, i)) 529 return NULL; 530 531 ivp = (struct iwi_vap *) kmalloc(sizeof(struct iwi_vap), 532 M_80211_VAP, M_WAITOK | M_ZERO); 533 if (ivp == NULL) 534 return NULL; 535 vap = &ivp->iwi_vap; 536 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 537 /* override the default, the setting comes from the linux driver */ 538 vap->iv_bmissthreshold = 24; 539 /* override with driver methods */ 540 ivp->iwi_newstate = vap->iv_newstate; 541 vap->iv_newstate = iwi_newstate; 542 543 /* complete setup */ 544 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status); 545 ic->ic_opmode = opmode; 546 return vap; 547 } 548 549 static void 550 iwi_vap_delete(struct ieee80211vap *vap) 551 { 552 struct iwi_vap *ivp = IWI_VAP(vap); 553 554 ieee80211_vap_detach(vap); 555 kfree(ivp, M_80211_VAP); 556 } 557 558 static void 559 iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 560 { 561 if (error != 0) 562 return; 563 564 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 565 566 *(bus_addr_t *)arg = segs[0].ds_addr; 567 } 568 569 static int 570 iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count) 571 { 572 int error; 573 574 ring->count = count; 575 ring->queued = 0; 576 ring->cur = ring->next = 0; 577 578 error = bus_dma_tag_create(NULL, 4, 0, 579 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 580 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 581 0 , &ring->desc_dmat); 582 if (error != 0) { 583 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 584 goto fail; 585 } 586 587 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 588 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 589 if (error != 0) { 590 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 591 goto fail; 592 } 593 594 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 595 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 596 if (error != 0) { 597 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 598 goto fail; 599 } 600 601 return 0; 602 603 fail: iwi_free_cmd_ring(sc, ring); 604 return error; 605 } 606 607 static void 608 iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 609 { 610 ring->queued = 0; 611 ring->cur = ring->next = 0; 612 } 613 614 static void 615 iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 616 { 617 if (ring->desc != NULL) { 618 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 619 BUS_DMASYNC_POSTWRITE); 620 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 621 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 622 } 623 624 if (ring->desc_dmat != NULL) 625 bus_dma_tag_destroy(ring->desc_dmat); 626 } 627 628 static int 629 iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count, 630 bus_addr_t csr_ridx, bus_addr_t csr_widx) 631 { 632 int i, error; 633 634 ring->count = count; 635 ring->queued = 0; 636 ring->cur = ring->next = 0; 637 ring->csr_ridx = csr_ridx; 638 ring->csr_widx = csr_widx; 639 640 error = bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 641 BUS_SPACE_MAXADDR, NULL, NULL, count * IWI_TX_DESC_SIZE, 1, 642 count * IWI_TX_DESC_SIZE, 0, &ring->desc_dmat); 643 if (error != 0) { 644 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 645 goto fail; 646 } 647 648 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 649 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 650 if (error != 0) { 651 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 652 goto fail; 653 } 654 655 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 656 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 657 if (error != 0) { 658 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 659 goto fail; 660 } 661 662 ring->data = kmalloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 663 M_WAITOK | M_ZERO); 664 665 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 666 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, IWI_MAX_NSEG, 667 MCLBYTES, 0, &ring->data_dmat); 668 if (error != 0) { 669 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 670 goto fail; 671 } 672 673 for (i = 0; i < count; i++) { 674 error = bus_dmamap_create(ring->data_dmat, 0, 675 &ring->data[i].map); 676 if (error != 0) { 677 device_printf(sc->sc_dev, "could not create DMA map\n"); 678 goto fail; 679 } 680 } 681 682 return 0; 683 684 fail: iwi_free_tx_ring(sc, ring); 685 return error; 686 } 687 688 static void 689 iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 690 { 691 struct iwi_tx_data *data; 692 int i; 693 694 for (i = 0; i < ring->count; i++) { 695 data = &ring->data[i]; 696 697 if (data->m != NULL) { 698 bus_dmamap_sync(ring->data_dmat, data->map, 699 BUS_DMASYNC_POSTWRITE); 700 bus_dmamap_unload(ring->data_dmat, data->map); 701 m_freem(data->m); 702 data->m = NULL; 703 } 704 705 if (data->ni != NULL) { 706 ieee80211_free_node(data->ni); 707 data->ni = NULL; 708 } 709 } 710 711 ring->queued = 0; 712 ring->cur = ring->next = 0; 713 } 714 715 static void 716 iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 717 { 718 struct iwi_tx_data *data; 719 int i; 720 721 if (ring->desc != NULL) { 722 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 723 BUS_DMASYNC_POSTWRITE); 724 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 725 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 726 } 727 728 if (ring->desc_dmat != NULL) 729 bus_dma_tag_destroy(ring->desc_dmat); 730 731 if (ring->data != NULL) { 732 for (i = 0; i < ring->count; i++) { 733 data = &ring->data[i]; 734 735 if (data->m != NULL) { 736 bus_dmamap_sync(ring->data_dmat, data->map, 737 BUS_DMASYNC_POSTWRITE); 738 bus_dmamap_unload(ring->data_dmat, data->map); 739 m_freem(data->m); 740 } 741 742 if (data->ni != NULL) 743 ieee80211_free_node(data->ni); 744 745 if (data->map != NULL) 746 bus_dmamap_destroy(ring->data_dmat, data->map); 747 } 748 749 kfree(ring->data, M_DEVBUF); 750 } 751 752 if (ring->data_dmat != NULL) 753 bus_dma_tag_destroy(ring->data_dmat); 754 } 755 756 static int 757 iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 758 { 759 struct iwi_rx_data *data; 760 int i, error; 761 762 ring->count = count; 763 ring->cur = 0; 764 765 ring->data = kmalloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 766 M_WAITOK | M_ZERO); 767 768 error = bus_dma_tag_create(NULL, 1, 0, BUS_SPACE_MAXADDR_32BIT, 769 BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 1, MCLBYTES, 770 0, &ring->data_dmat); 771 if (error != 0) { 772 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 773 goto fail; 774 } 775 776 for (i = 0; i < count; i++) { 777 data = &ring->data[i]; 778 779 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 780 if (error != 0) { 781 device_printf(sc->sc_dev, "could not create DMA map\n"); 782 goto fail; 783 } 784 785 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 786 if (data->m == NULL) { 787 device_printf(sc->sc_dev, 788 "could not allocate rx mbuf\n"); 789 error = ENOMEM; 790 goto fail; 791 } 792 793 error = bus_dmamap_load(ring->data_dmat, data->map, 794 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 795 &data->physaddr, 0); 796 if (error != 0) { 797 device_printf(sc->sc_dev, 798 "could not load rx buf DMA map"); 799 goto fail; 800 } 801 802 data->reg = IWI_CSR_RX_BASE + i * 4; 803 } 804 805 return 0; 806 807 fail: iwi_free_rx_ring(sc, ring); 808 return error; 809 } 810 811 static void 812 iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 813 { 814 ring->cur = 0; 815 } 816 817 static void 818 iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 819 { 820 struct iwi_rx_data *data; 821 int i; 822 823 if (ring->data != NULL) { 824 for (i = 0; i < ring->count; i++) { 825 data = &ring->data[i]; 826 827 if (data->m != NULL) { 828 bus_dmamap_sync(ring->data_dmat, data->map, 829 BUS_DMASYNC_POSTREAD); 830 bus_dmamap_unload(ring->data_dmat, data->map); 831 m_freem(data->m); 832 } 833 834 if (data->map != NULL) 835 bus_dmamap_destroy(ring->data_dmat, data->map); 836 } 837 838 kfree(ring->data, M_DEVBUF); 839 } 840 841 if (ring->data_dmat != NULL) 842 bus_dma_tag_destroy(ring->data_dmat); 843 } 844 845 static int 846 iwi_shutdown(device_t dev) 847 { 848 struct iwi_softc *sc = device_get_softc(dev); 849 850 wlan_serialize_enter(); 851 iwi_stop(sc); 852 iwi_put_firmware(sc); /* ??? XXX */ 853 wlan_serialize_exit(); 854 855 return 0; 856 } 857 858 static int 859 iwi_suspend(device_t dev) 860 { 861 struct iwi_softc *sc = device_get_softc(dev); 862 863 wlan_serialize_enter(); 864 iwi_stop(sc); 865 wlan_serialize_exit(); 866 867 return 0; 868 } 869 870 static int 871 iwi_resume(device_t dev) 872 { 873 struct iwi_softc *sc = device_get_softc(dev); 874 struct ifnet *ifp = sc->sc_ifp; 875 876 wlan_serialize_enter(); 877 pci_write_config(dev, 0x41, 0, 1); 878 879 if (ifp->if_flags & IFF_UP) 880 iwi_init(sc); 881 882 wlan_serialize_exit(); 883 return 0; 884 } 885 886 static struct ieee80211_node * 887 iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 888 { 889 struct iwi_node *in; 890 891 in = kmalloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 892 if (in == NULL) 893 return NULL; 894 /* XXX assign sta table entry for adhoc */ 895 in->in_station = -1; 896 897 return &in->in_node; 898 } 899 900 static void 901 iwi_node_free(struct ieee80211_node *ni) 902 { 903 struct ieee80211com *ic = ni->ni_ic; 904 struct iwi_softc *sc = ic->ic_ifp->if_softc; 905 struct iwi_node *in = (struct iwi_node *)ni; 906 char ethstr[ETHER_ADDRSTRLEN + 1]; 907 908 if (in->in_station != -1) { 909 DPRINTF(("%s mac %s station %u\n", __func__, 910 kether_ntoa(ni->ni_macaddr, ethstr), in->in_station)); 911 devfs_clone_bitmap_put(&sc->sc_unr, in->in_station); 912 } 913 914 sc->sc_node_free(ni); 915 } 916 917 /* 918 * Convert h/w rate code to IEEE rate code. 919 */ 920 static int 921 iwi_cvtrate(int iwirate) 922 { 923 switch (iwirate) { 924 case IWI_RATE_DS1: return 2; 925 case IWI_RATE_DS2: return 4; 926 case IWI_RATE_DS5: return 11; 927 case IWI_RATE_DS11: return 22; 928 case IWI_RATE_OFDM6: return 12; 929 case IWI_RATE_OFDM9: return 18; 930 case IWI_RATE_OFDM12: return 24; 931 case IWI_RATE_OFDM18: return 36; 932 case IWI_RATE_OFDM24: return 48; 933 case IWI_RATE_OFDM36: return 72; 934 case IWI_RATE_OFDM48: return 96; 935 case IWI_RATE_OFDM54: return 108; 936 } 937 return 0; 938 } 939 940 /* 941 * The firmware automatically adapts the transmit speed. We report its current 942 * value here. 943 */ 944 static void 945 iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 946 { 947 struct ieee80211vap *vap = ifp->if_softc; 948 struct ieee80211com *ic = vap->iv_ic; 949 struct iwi_softc *sc = ic->ic_ifp->if_softc; 950 951 /* read current transmission rate from adapter */ 952 vap->iv_bss->ni_txrate = 953 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 954 ieee80211_media_status(ifp, imr); 955 } 956 957 static int 958 iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 959 { 960 struct iwi_vap *ivp = IWI_VAP(vap); 961 struct ieee80211com *ic = vap->iv_ic; 962 struct ifnet *ifp = ic->ic_ifp; 963 struct iwi_softc *sc = ifp->if_softc; 964 965 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 966 ieee80211_state_name[vap->iv_state], 967 ieee80211_state_name[nstate], sc->flags)); 968 969 switch (nstate) { 970 case IEEE80211_S_INIT: 971 /* 972 * NB: don't try to do this if iwi_stop_master has 973 * shutdown the firmware and disabled interrupts. 974 */ 975 if (vap->iv_state == IEEE80211_S_RUN && 976 (sc->flags & IWI_FLAG_FW_INITED)) 977 iwi_disassociate(sc, 0); 978 break; 979 case IEEE80211_S_AUTH: 980 iwi_auth_and_assoc(sc, vap); 981 break; 982 case IEEE80211_S_RUN: 983 if (vap->iv_opmode == IEEE80211_M_IBSS && 984 vap->iv_state == IEEE80211_S_SCAN) { 985 /* 986 * XXX when joining an ibss network we are called 987 * with a SCAN -> RUN transition on scan complete. 988 * Use that to call iwi_auth_and_assoc. On completing 989 * the join we are then called again with an 990 * AUTH -> RUN transition and we want to do nothing. 991 * This is all totally bogus and needs to be redone. 992 */ 993 iwi_auth_and_assoc(sc, vap); 994 } 995 break; 996 case IEEE80211_S_ASSOC: 997 /* 998 * If we are transitioning from AUTH then just wait 999 * for the ASSOC status to come back from the firmware. 1000 * Otherwise we need to issue the association request. 1001 */ 1002 if (vap->iv_state == IEEE80211_S_AUTH) 1003 break; 1004 iwi_auth_and_assoc(sc, vap); 1005 break; 1006 default: 1007 break; 1008 } 1009 1010 return ivp->iwi_newstate(vap, nstate, arg); 1011 } 1012 1013 /* 1014 * WME parameters coming from IEEE 802.11e specification. These values are 1015 * already declared in ieee80211_proto.c, but they are static so they can't 1016 * be reused here. 1017 */ 1018 static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 1019 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */ 1020 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */ 1021 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */ 1022 { 0, 2, 3, 4, 102 } /* WME_AC_VO */ 1023 }; 1024 1025 static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 1026 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */ 1027 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */ 1028 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */ 1029 { 0, 2, 2, 3, 47 } /* WME_AC_VO */ 1030 }; 1031 #define IWI_EXP2(v) htole16((1 << (v)) - 1) 1032 #define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 1033 1034 static void 1035 iwi_wme_init(struct iwi_softc *sc) 1036 { 1037 const struct wmeParams *wmep; 1038 int ac; 1039 1040 memset(sc->wme, 0, sizeof sc->wme); 1041 for (ac = 0; ac < WME_NUM_AC; ac++) { 1042 /* set WME values for CCK modulation */ 1043 wmep = &iwi_wme_cck_params[ac]; 1044 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn; 1045 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1046 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1047 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1048 sc->wme[1].acm[ac] = wmep->wmep_acm; 1049 1050 /* set WME values for OFDM modulation */ 1051 wmep = &iwi_wme_ofdm_params[ac]; 1052 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn; 1053 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1054 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1055 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1056 sc->wme[2].acm[ac] = wmep->wmep_acm; 1057 } 1058 } 1059 1060 static int 1061 iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic) 1062 { 1063 const struct wmeParams *wmep; 1064 int ac; 1065 1066 for (ac = 0; ac < WME_NUM_AC; ac++) { 1067 /* set WME values for current operating mode */ 1068 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1069 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn; 1070 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1071 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1072 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1073 sc->wme[0].acm[ac] = wmep->wmep_acm; 1074 } 1075 1076 DPRINTF(("Setting WME parameters\n")); 1077 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme); 1078 } 1079 #undef IWI_USEC 1080 #undef IWI_EXP2 1081 1082 static void 1083 iwi_update_wme_task(void *arg, int npending) 1084 { 1085 struct ieee80211com *ic = arg; 1086 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1087 1088 wlan_serialize_enter(); 1089 (void) iwi_wme_setparams(sc, ic); 1090 wlan_serialize_exit(); 1091 } 1092 1093 static int 1094 iwi_wme_update(struct ieee80211com *ic) 1095 { 1096 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1097 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1098 1099 /* 1100 * We may be called to update the WME parameters in 1101 * the adapter at various places. If we're already 1102 * associated then initiate the request immediately; 1103 * otherwise we assume the params will get sent down 1104 * to the adapter as part of the work iwi_auth_and_assoc 1105 * does. 1106 */ 1107 if (vap->iv_state == IEEE80211_S_RUN) 1108 ieee80211_runtask(ic, &sc->sc_wmetask); 1109 return (0); 1110 } 1111 1112 static int 1113 iwi_wme_setie(struct iwi_softc *sc) 1114 { 1115 struct ieee80211_wme_info wme; 1116 1117 memset(&wme, 0, sizeof wme); 1118 wme.wme_id = IEEE80211_ELEMID_VENDOR; 1119 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 1120 wme.wme_oui[0] = 0x00; 1121 wme.wme_oui[1] = 0x50; 1122 wme.wme_oui[2] = 0xf2; 1123 wme.wme_type = WME_OUI_TYPE; 1124 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 1125 wme.wme_version = WME_VERSION; 1126 wme.wme_info = 0; 1127 1128 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 1129 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme); 1130 } 1131 1132 /* 1133 * Read 16 bits at address 'addr' from the serial EEPROM. 1134 */ 1135 static uint16_t 1136 iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1137 { 1138 uint32_t tmp; 1139 uint16_t val; 1140 int n; 1141 1142 /* clock C once before the first command */ 1143 IWI_EEPROM_CTL(sc, 0); 1144 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1145 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1146 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1147 1148 /* write start bit (1) */ 1149 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1150 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1151 1152 /* write READ opcode (10) */ 1153 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1154 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1155 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1156 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1157 1158 /* write address A7-A0 */ 1159 for (n = 7; n >= 0; n--) { 1160 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1161 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1162 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1163 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1164 } 1165 1166 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1167 1168 /* read data Q15-Q0 */ 1169 val = 0; 1170 for (n = 15; n >= 0; n--) { 1171 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1172 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1173 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1174 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1175 } 1176 1177 IWI_EEPROM_CTL(sc, 0); 1178 1179 /* clear Chip Select and clock C */ 1180 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1181 IWI_EEPROM_CTL(sc, 0); 1182 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1183 1184 return val; 1185 } 1186 1187 static void 1188 iwi_setcurchan(struct iwi_softc *sc, int chan) 1189 { 1190 struct ifnet *ifp = sc->sc_ifp; 1191 struct ieee80211com *ic = ifp->if_l2com; 1192 1193 sc->curchan = chan; 1194 ieee80211_radiotap_chan_change(ic); 1195 } 1196 1197 static void 1198 iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1199 struct iwi_frame *frame) 1200 { 1201 struct ifnet *ifp = sc->sc_ifp; 1202 struct ieee80211com *ic = ifp->if_l2com; 1203 struct mbuf *mnew, *m; 1204 struct ieee80211_node *ni; 1205 int type, error, framelen; 1206 int8_t rssi, nf; 1207 1208 framelen = le16toh(frame->len); 1209 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) { 1210 /* 1211 * XXX >MCLBYTES is bogus as it means the h/w dma'd 1212 * out of bounds; need to figure out how to limit 1213 * frame size in the firmware 1214 */ 1215 /* XXX stat */ 1216 DPRINTFN(1, 1217 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1218 le16toh(frame->len), frame->chan, frame->rssi, 1219 frame->rssi_dbm)); 1220 return; 1221 } 1222 1223 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1224 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm)); 1225 1226 if (frame->chan != sc->curchan) 1227 iwi_setcurchan(sc, frame->chan); 1228 1229 /* 1230 * Try to allocate a new mbuf for this ring element and load it before 1231 * processing the current mbuf. If the ring element cannot be loaded, 1232 * drop the received packet and reuse the old mbuf. In the unlikely 1233 * case that the old mbuf can't be reloaded either, explicitly panic. 1234 */ 1235 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1236 if (mnew == NULL) { 1237 IFNET_STAT_INC(ifp, ierrors, 1); 1238 return; 1239 } 1240 1241 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1242 1243 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1244 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr, 1245 0); 1246 if (error != 0) { 1247 m_freem(mnew); 1248 1249 /* try to reload the old mbuf */ 1250 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1251 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 1252 &data->physaddr, 0); 1253 if (error != 0) { 1254 /* very unlikely that it will fail... */ 1255 panic("%s: could not load old rx mbuf", 1256 device_get_name(sc->sc_dev)); 1257 } 1258 IFNET_STAT_INC(ifp, ierrors, 1); 1259 return; 1260 } 1261 1262 /* 1263 * New mbuf successfully loaded, update Rx ring and continue 1264 * processing. 1265 */ 1266 m = data->m; 1267 data->m = mnew; 1268 CSR_WRITE_4(sc, data->reg, data->physaddr); 1269 1270 /* finalize mbuf */ 1271 m->m_pkthdr.rcvif = ifp; 1272 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1273 sizeof (struct iwi_frame) + framelen; 1274 1275 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1276 1277 rssi = frame->rssi_dbm; 1278 nf = -95; 1279 if (ieee80211_radiotap_active(ic)) { 1280 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1281 1282 tap->wr_flags = 0; 1283 tap->wr_antsignal = rssi; 1284 tap->wr_antnoise = nf; 1285 tap->wr_rate = iwi_cvtrate(frame->rate); 1286 tap->wr_antenna = frame->antenna; 1287 } 1288 1289 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1290 if (ni != NULL) { 1291 type = ieee80211_input(ni, m, rssi, nf); 1292 ieee80211_free_node(ni); 1293 } else 1294 type = ieee80211_input_all(ic, m, rssi, nf); 1295 1296 if (sc->sc_softled) { 1297 /* 1298 * Blink for any data frame. Otherwise do a 1299 * heartbeat-style blink when idle. The latter 1300 * is mainly for station mode where we depend on 1301 * periodic beacon frames to trigger the poll event. 1302 */ 1303 if (type == IEEE80211_FC0_TYPE_DATA) { 1304 sc->sc_rxrate = frame->rate; 1305 iwi_led_event(sc, IWI_LED_RX); 1306 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle) 1307 iwi_led_event(sc, IWI_LED_POLL); 1308 } 1309 } 1310 1311 /* 1312 * Check for an association response frame to see if QoS 1313 * has been negotiated. We parse just enough to figure 1314 * out if we're supposed to use QoS. The proper solution 1315 * is to pass the frame up so ieee80211_input can do the 1316 * work but that's made hard by how things currently are 1317 * done in the driver. 1318 */ 1319 static void 1320 iwi_checkforqos(struct ieee80211vap *vap, 1321 const struct ieee80211_frame *wh, int len) 1322 { 1323 #define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 1324 const uint8_t *frm, *efrm, *wme; 1325 struct ieee80211_node *ni; 1326 uint16_t capinfo, associd; 1327 1328 /* NB: +8 for capinfo, status, associd, and first ie */ 1329 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) || 1330 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP) 1331 return; 1332 /* 1333 * asresp frame format 1334 * [2] capability information 1335 * [2] status 1336 * [2] association ID 1337 * [tlv] supported rates 1338 * [tlv] extended supported rates 1339 * [tlv] WME 1340 */ 1341 frm = (const uint8_t *)&wh[1]; 1342 efrm = ((const uint8_t *) wh) + len; 1343 1344 capinfo = le16toh(*(const uint16_t *)frm); 1345 frm += 2; 1346 frm += 2; 1347 associd = le16toh(*(const uint16_t *)frm); 1348 frm += 2; 1349 1350 wme = NULL; 1351 while (frm < efrm) { 1352 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1], return); 1353 switch (*frm) { 1354 case IEEE80211_ELEMID_VENDOR: 1355 if (iswmeoui(frm)) 1356 wme = frm; 1357 break; 1358 } 1359 frm += frm[1] + 2; 1360 } 1361 1362 ni = vap->iv_bss; 1363 ni->ni_capinfo = capinfo; 1364 ni->ni_associd = associd; 1365 if (wme != NULL) 1366 ni->ni_flags |= IEEE80211_NODE_QOS; 1367 else 1368 ni->ni_flags &= ~IEEE80211_NODE_QOS; 1369 #undef SUBTYPE 1370 } 1371 1372 /* 1373 * Task queue callbacks for iwi_notification_intr used to avoid LOR's. 1374 */ 1375 1376 static void 1377 iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1378 { 1379 struct ifnet *ifp = sc->sc_ifp; 1380 struct ieee80211com *ic = ifp->if_l2com; 1381 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1382 struct iwi_notif_scan_channel *chan; 1383 struct iwi_notif_scan_complete *scan; 1384 struct iwi_notif_authentication *auth; 1385 struct iwi_notif_association *assoc; 1386 struct iwi_notif_beacon_state *beacon; 1387 1388 switch (notif->type) { 1389 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1390 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1391 1392 DPRINTFN(3, ("Scan of channel %u complete (%u)\n", 1393 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan)); 1394 1395 /* Reset the timer, the scan is still going */ 1396 sc->sc_state_timer = 3; 1397 break; 1398 1399 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1400 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1401 1402 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1403 scan->status)); 1404 1405 IWI_STATE_END(sc, IWI_FW_SCANNING); 1406 1407 if (scan->status == IWI_SCAN_COMPLETED) { 1408 /* NB: don't need to defer, net80211 does it for us */ 1409 ieee80211_scan_next(vap); 1410 } 1411 break; 1412 1413 case IWI_NOTIF_TYPE_AUTHENTICATION: 1414 auth = (struct iwi_notif_authentication *)(notif + 1); 1415 switch (auth->state) { 1416 case IWI_AUTH_SUCCESS: 1417 DPRINTFN(2, ("Authentication succeeeded\n")); 1418 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1); 1419 break; 1420 case IWI_AUTH_FAIL: 1421 /* 1422 * These are delivered as an unsolicited deauth 1423 * (e.g. due to inactivity) or in response to an 1424 * associate request. 1425 */ 1426 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1427 if (vap->iv_state != IEEE80211_S_RUN) { 1428 DPRINTFN(2, ("Authentication failed\n")); 1429 vap->iv_stats.is_rx_auth_fail++; 1430 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1431 } else { 1432 DPRINTFN(2, ("Deauthenticated\n")); 1433 vap->iv_stats.is_rx_deauth++; 1434 } 1435 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1436 break; 1437 case IWI_AUTH_SENT_1: 1438 case IWI_AUTH_RECV_2: 1439 case IWI_AUTH_SEQ1_PASS: 1440 break; 1441 case IWI_AUTH_SEQ1_FAIL: 1442 DPRINTFN(2, ("Initial authentication handshake failed; " 1443 "you probably need shared key\n")); 1444 vap->iv_stats.is_rx_auth_fail++; 1445 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1446 /* XXX retry shared key when in auto */ 1447 break; 1448 default: 1449 device_printf(sc->sc_dev, 1450 "unknown authentication state %u\n", auth->state); 1451 break; 1452 } 1453 break; 1454 1455 case IWI_NOTIF_TYPE_ASSOCIATION: 1456 assoc = (struct iwi_notif_association *)(notif + 1); 1457 switch (assoc->state) { 1458 case IWI_AUTH_SUCCESS: 1459 /* re-association, do nothing */ 1460 break; 1461 case IWI_ASSOC_SUCCESS: 1462 DPRINTFN(2, ("Association succeeded\n")); 1463 sc->flags |= IWI_FLAG_ASSOCIATED; 1464 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1465 iwi_checkforqos(vap, 1466 (const struct ieee80211_frame *)(assoc+1), 1467 le16toh(notif->len) - sizeof(*assoc)); 1468 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1469 break; 1470 case IWI_ASSOC_INIT: 1471 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1472 switch (sc->fw_state) { 1473 case IWI_FW_ASSOCIATING: 1474 DPRINTFN(2, ("Association failed\n")); 1475 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1476 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1477 break; 1478 1479 case IWI_FW_DISASSOCIATING: 1480 DPRINTFN(2, ("Dissassociated\n")); 1481 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING); 1482 vap->iv_stats.is_rx_disassoc++; 1483 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1484 break; 1485 } 1486 break; 1487 default: 1488 device_printf(sc->sc_dev, 1489 "unknown association state %u\n", assoc->state); 1490 break; 1491 } 1492 break; 1493 1494 case IWI_NOTIF_TYPE_BEACON: 1495 /* XXX check struct length */ 1496 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1497 1498 DPRINTFN(5, ("Beacon state (%u, %u)\n", 1499 beacon->state, le32toh(beacon->number))); 1500 1501 if (beacon->state == IWI_BEACON_MISS) { 1502 /* 1503 * The firmware notifies us of every beacon miss 1504 * so we need to track the count against the 1505 * configured threshold before notifying the 1506 * 802.11 layer. 1507 * XXX try to roam, drop assoc only on much higher count 1508 */ 1509 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) { 1510 DPRINTF(("Beacon miss: %u >= %u\n", 1511 le32toh(beacon->number), 1512 vap->iv_bmissthreshold)); 1513 vap->iv_stats.is_beacon_miss++; 1514 /* 1515 * It's pointless to notify the 802.11 layer 1516 * as it'll try to send a probe request (which 1517 * we'll discard) and then timeout and drop us 1518 * into scan state. Instead tell the firmware 1519 * to disassociate and then on completion we'll 1520 * kick the state machine to scan. 1521 */ 1522 ieee80211_runtask(ic, &sc->sc_disassoctask); 1523 } 1524 } 1525 break; 1526 1527 case IWI_NOTIF_TYPE_CALIBRATION: 1528 case IWI_NOTIF_TYPE_NOISE: 1529 case IWI_NOTIF_TYPE_LINK_QUALITY: 1530 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1531 break; 1532 1533 default: 1534 DPRINTF(("unknown notification type %u flags 0x%x len %u\n", 1535 notif->type, notif->flags, le16toh(notif->len))); 1536 break; 1537 } 1538 } 1539 1540 static void 1541 iwi_rx_intr(struct iwi_softc *sc) 1542 { 1543 struct iwi_rx_data *data; 1544 struct iwi_hdr *hdr; 1545 uint32_t hw; 1546 1547 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1548 1549 for (; sc->rxq.cur != hw;) { 1550 data = &sc->rxq.data[sc->rxq.cur]; 1551 1552 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1553 BUS_DMASYNC_POSTREAD); 1554 1555 hdr = mtod(data->m, struct iwi_hdr *); 1556 1557 switch (hdr->type) { 1558 case IWI_HDR_TYPE_FRAME: 1559 iwi_frame_intr(sc, data, sc->rxq.cur, 1560 (struct iwi_frame *)(hdr + 1)); 1561 break; 1562 1563 case IWI_HDR_TYPE_NOTIF: 1564 iwi_notification_intr(sc, 1565 (struct iwi_notif *)(hdr + 1)); 1566 break; 1567 1568 default: 1569 device_printf(sc->sc_dev, "unknown hdr type %u\n", 1570 hdr->type); 1571 } 1572 1573 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1574 1575 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1576 } 1577 1578 /* tell the firmware what we have processed */ 1579 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1580 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1581 } 1582 1583 static void 1584 iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1585 { 1586 struct ifnet *ifp = sc->sc_ifp; 1587 struct iwi_tx_data *data; 1588 uint32_t hw; 1589 1590 hw = CSR_READ_4(sc, txq->csr_ridx); 1591 1592 for (; txq->next != hw;) { 1593 data = &txq->data[txq->next]; 1594 1595 bus_dmamap_sync(txq->data_dmat, data->map, 1596 BUS_DMASYNC_POSTWRITE); 1597 bus_dmamap_unload(txq->data_dmat, data->map); 1598 if (data->m->m_flags & M_TXCB) 1599 ieee80211_process_callback(data->ni, data->m, 0/*XXX*/); 1600 m_freem(data->m); 1601 data->m = NULL; 1602 ieee80211_free_node(data->ni); 1603 data->ni = NULL; 1604 1605 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1606 1607 IFNET_STAT_INC(ifp, opackets, 1); 1608 1609 txq->queued--; 1610 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1611 } 1612 1613 sc->sc_tx_timer = 0; 1614 ifq_clr_oactive(&ifp->if_snd); 1615 1616 if (sc->sc_softled) 1617 iwi_led_event(sc, IWI_LED_TX); 1618 1619 iwi_start_locked(ifp); 1620 } 1621 1622 static void 1623 iwi_fatal_error_intr(struct iwi_softc *sc) 1624 { 1625 struct ifnet *ifp = sc->sc_ifp; 1626 struct ieee80211com *ic = ifp->if_l2com; 1627 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1628 1629 device_printf(sc->sc_dev, "firmware error\n"); 1630 if (vap != NULL) 1631 ieee80211_cancel_scan(vap); 1632 ieee80211_runtask(ic, &sc->sc_restarttask); 1633 1634 sc->flags &= ~IWI_FLAG_BUSY; 1635 sc->sc_busy_timer = 0; 1636 wakeup(sc); 1637 } 1638 1639 static void 1640 iwi_radio_off_intr(struct iwi_softc *sc) 1641 { 1642 struct ifnet *ifp = sc->sc_ifp; 1643 struct ieee80211com *ic = ifp->if_l2com; 1644 1645 ieee80211_runtask(ic, &sc->sc_radiofftask); 1646 } 1647 1648 static void 1649 iwi_intr(void *arg) 1650 { 1651 struct iwi_softc *sc = arg; 1652 uint32_t r; 1653 1654 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) { 1655 return; 1656 } 1657 1658 /* acknowledge interrupts */ 1659 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1660 1661 if (r & IWI_INTR_FATAL_ERROR) { 1662 iwi_fatal_error_intr(sc); 1663 return; 1664 } 1665 1666 if (r & IWI_INTR_FW_INITED) { 1667 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1668 wakeup(sc); 1669 } 1670 1671 if (r & IWI_INTR_RADIO_OFF) 1672 iwi_radio_off_intr(sc); 1673 1674 if (r & IWI_INTR_CMD_DONE) { 1675 sc->flags &= ~IWI_FLAG_BUSY; 1676 sc->sc_busy_timer = 0; 1677 wakeup(sc); 1678 } 1679 1680 if (r & IWI_INTR_TX1_DONE) 1681 iwi_tx_intr(sc, &sc->txq[0]); 1682 1683 if (r & IWI_INTR_TX2_DONE) 1684 iwi_tx_intr(sc, &sc->txq[1]); 1685 1686 if (r & IWI_INTR_TX3_DONE) 1687 iwi_tx_intr(sc, &sc->txq[2]); 1688 1689 if (r & IWI_INTR_TX4_DONE) 1690 iwi_tx_intr(sc, &sc->txq[3]); 1691 1692 if (r & IWI_INTR_RX_DONE) 1693 iwi_rx_intr(sc); 1694 1695 if (r & IWI_INTR_PARITY_ERROR) { 1696 /* XXX rate-limit */ 1697 device_printf(sc->sc_dev, "parity error\n"); 1698 } 1699 } 1700 1701 static int 1702 iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len) 1703 { 1704 struct iwi_cmd_desc *desc; 1705 1706 if (sc->flags & IWI_FLAG_BUSY) { 1707 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 1708 __func__, type); 1709 return EAGAIN; 1710 } 1711 1712 sc->flags |= IWI_FLAG_BUSY; 1713 sc->sc_busy_timer = 2; 1714 1715 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1716 1717 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1718 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1719 desc->type = type; 1720 desc->len = len; 1721 memcpy(desc->data, data, len); 1722 1723 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map, 1724 BUS_DMASYNC_PREWRITE); 1725 1726 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1727 type, len)); 1728 1729 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1730 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1731 1732 return zsleep(sc, &wlan_global_serializer, 0, "iwicmd", hz); 1733 } 1734 1735 static void 1736 iwi_write_ibssnode(struct iwi_softc *sc, 1737 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry) 1738 { 1739 struct iwi_ibssnode node; 1740 char ethstr[ETHER_ADDRSTRLEN + 1]; 1741 1742 /* write node information into NIC memory */ 1743 memset(&node, 0, sizeof node); 1744 IEEE80211_ADDR_COPY(node.bssid, addr); 1745 1746 DPRINTF(("%s mac %s station %u\n", __func__, kether_ntoa(node.bssid, ethstr), entry)); 1747 1748 CSR_WRITE_REGION_1(sc, 1749 IWI_CSR_NODE_BASE + entry * sizeof node, 1750 (uint8_t *)&node, sizeof node); 1751 } 1752 1753 static int 1754 iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1755 int ac) 1756 { 1757 struct iwi_softc *sc = ifp->if_softc; 1758 struct ieee80211vap *vap = ni->ni_vap; 1759 struct ieee80211com *ic = ni->ni_ic; 1760 struct iwi_node *in = (struct iwi_node *)ni; 1761 const struct ieee80211_frame *wh; 1762 struct ieee80211_key *k; 1763 const struct chanAccParams *cap; 1764 struct iwi_tx_ring *txq = &sc->txq[ac]; 1765 struct iwi_tx_data *data; 1766 struct iwi_tx_desc *desc; 1767 struct mbuf *mnew; 1768 bus_dma_segment_t segs[IWI_MAX_NSEG]; 1769 int error, nsegs, hdrlen, i; 1770 int ismcast, flags, xflags, staid; 1771 1772 wh = mtod(m0, const struct ieee80211_frame *); 1773 /* NB: only data frames use this path */ 1774 hdrlen = ieee80211_hdrsize(wh); 1775 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1776 flags = xflags = 0; 1777 1778 if (!ismcast) 1779 flags |= IWI_DATA_FLAG_NEED_ACK; 1780 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE) 1781 flags |= IWI_DATA_FLAG_SHPREAMBLE; 1782 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1783 xflags |= IWI_DATA_XFLAG_QOS; 1784 cap = &ic->ic_wme.wme_chanParams; 1785 if (!cap->cap_wmeParams[ac].wmep_noackPolicy) 1786 flags &= ~IWI_DATA_FLAG_NEED_ACK; 1787 } 1788 1789 /* 1790 * This is only used in IBSS mode where the firmware expect an index 1791 * in a h/w table instead of a destination address. 1792 */ 1793 if (vap->iv_opmode == IEEE80211_M_IBSS) { 1794 if (!ismcast) { 1795 if (in->in_station == -1) { 1796 in->in_station = devfs_clone_bitmap_get(&sc->sc_unr, 1797 IWI_MAX_IBSSNODE-1); 1798 if (in->in_station == -1) { 1799 /* h/w table is full */ 1800 m_freem(m0); 1801 ieee80211_free_node(ni); 1802 IFNET_STAT_INC(ifp, oerrors, 1); 1803 return 0; 1804 } 1805 iwi_write_ibssnode(sc, 1806 ni->ni_macaddr, in->in_station); 1807 } 1808 staid = in->in_station; 1809 } else { 1810 /* 1811 * Multicast addresses have no associated node 1812 * so there will be no station entry. We reserve 1813 * entry 0 for one mcast address and use that. 1814 * If there are many being used this will be 1815 * expensive and we'll need to do a better job 1816 * but for now this handles the broadcast case. 1817 */ 1818 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) { 1819 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1); 1820 iwi_write_ibssnode(sc, sc->sc_mcast, 0); 1821 } 1822 staid = 0; 1823 } 1824 } else 1825 staid = 0; 1826 1827 if (wh->i_fc[1] & IEEE80211_FC1_PROTECTED) { 1828 k = ieee80211_crypto_encap(ni, m0); 1829 if (k == NULL) { 1830 m_freem(m0); 1831 return ENOBUFS; 1832 } 1833 1834 /* packet header may have moved, reset our local pointer */ 1835 wh = mtod(m0, struct ieee80211_frame *); 1836 } 1837 1838 if (ieee80211_radiotap_active_vap(vap)) { 1839 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1840 1841 tap->wt_flags = 0; 1842 1843 ieee80211_radiotap_tx(vap, m0); 1844 } 1845 1846 data = &txq->data[txq->cur]; 1847 desc = &txq->desc[txq->cur]; 1848 1849 /* save and trim IEEE802.11 header */ 1850 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh); 1851 m_adj(m0, hdrlen); 1852 1853 error = bus_dmamap_load_mbuf_segment(txq->data_dmat, data->map, 1854 m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 1855 if (error != 0 && error != EFBIG) { 1856 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1857 error); 1858 m_freem(m0); 1859 return error; 1860 } 1861 if (error != 0) { 1862 mnew = m_defrag(m0, M_NOWAIT); 1863 if (mnew == NULL) { 1864 device_printf(sc->sc_dev, 1865 "could not defragment mbuf\n"); 1866 m_freem(m0); 1867 return ENOBUFS; 1868 } 1869 m0 = mnew; 1870 1871 error = bus_dmamap_load_mbuf_segment(txq->data_dmat, 1872 data->map, m0, segs, 1, &nsegs, BUS_DMA_NOWAIT); 1873 if (error != 0) { 1874 device_printf(sc->sc_dev, 1875 "could not map mbuf (error %d)\n", error); 1876 m_freem(m0); 1877 return error; 1878 } 1879 } 1880 1881 data->m = m0; 1882 data->ni = ni; 1883 1884 desc->hdr.type = IWI_HDR_TYPE_DATA; 1885 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1886 desc->station = staid; 1887 desc->cmd = IWI_DATA_CMD_TX; 1888 desc->len = htole16(m0->m_pkthdr.len); 1889 desc->flags = flags; 1890 desc->xflags = xflags; 1891 1892 #if 0 1893 if (vap->iv_flags & IEEE80211_F_PRIVACY) 1894 desc->wep_txkey = vap->iv_def_txkey; 1895 else 1896 #endif 1897 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1898 1899 desc->nseg = htole32(nsegs); 1900 for (i = 0; i < nsegs; i++) { 1901 desc->seg_addr[i] = htole32(segs[i].ds_addr); 1902 desc->seg_len[i] = htole16(segs[i].ds_len); 1903 } 1904 1905 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1906 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1907 1908 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1909 ac, txq->cur, le16toh(desc->len), nsegs)); 1910 1911 txq->queued++; 1912 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1913 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1914 1915 return 0; 1916 } 1917 1918 static int 1919 iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1920 const struct ieee80211_bpf_params *params) 1921 { 1922 /* no support; just discard */ 1923 m_freem(m); 1924 ieee80211_free_node(ni); 1925 return 0; 1926 } 1927 1928 static void 1929 iwi_start_locked(struct ifnet *ifp) 1930 { 1931 struct iwi_softc *sc = ifp->if_softc; 1932 struct mbuf *m; 1933 struct ieee80211_node *ni; 1934 int ac; 1935 1936 if ((ifp->if_flags & IFF_RUNNING) == 0) 1937 return; 1938 1939 for (;;) { 1940 m = ifq_dequeue(&ifp->if_snd); 1941 if (m == NULL) 1942 break; 1943 ac = M_WME_GETAC(m); 1944 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) { 1945 /* there is no place left in this ring; tail drop */ 1946 /* XXX tail drop */ 1947 ifq_prepend(&ifp->if_snd, m); 1948 ifq_set_oactive(&ifp->if_snd); 1949 break; 1950 } 1951 1952 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1953 if (iwi_tx_start(ifp, m, ni, ac) != 0) { 1954 ieee80211_free_node(ni); 1955 IFNET_STAT_INC(ifp, oerrors, 1); 1956 break; 1957 } 1958 1959 sc->sc_tx_timer = 5; 1960 } 1961 } 1962 1963 static void 1964 iwi_start(struct ifnet *ifp, struct ifaltq_subque *ifsq) 1965 { 1966 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq); 1967 iwi_start_locked(ifp); 1968 } 1969 1970 static void 1971 iwi_watchdog(void *arg) 1972 { 1973 struct iwi_softc *sc = arg; 1974 struct ifnet *ifp = sc->sc_ifp; 1975 struct ieee80211com *ic = ifp->if_l2com; 1976 1977 wlan_serialize_enter(); 1978 if (sc->sc_tx_timer > 0) { 1979 if (--sc->sc_tx_timer == 0) { 1980 if_printf(ifp, "device timeout\n"); 1981 IFNET_STAT_INC(ifp, oerrors, 1); 1982 wlan_serialize_exit(); 1983 ieee80211_runtask(ic, &sc->sc_restarttask); 1984 wlan_serialize_enter(); 1985 } 1986 } 1987 if (sc->sc_state_timer > 0) { 1988 if (--sc->sc_state_timer == 0) { 1989 if_printf(ifp, "firmware stuck in state %d, resetting\n", 1990 sc->fw_state); 1991 if (sc->fw_state == IWI_FW_SCANNING) { 1992 struct ieee80211com *ic = ifp->if_l2com; 1993 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps)); 1994 } 1995 wlan_serialize_exit(); 1996 ieee80211_runtask(ic, &sc->sc_restarttask); 1997 wlan_serialize_enter(); 1998 sc->sc_state_timer = 3; 1999 } 2000 } 2001 if (sc->sc_busy_timer > 0) { 2002 if (--sc->sc_busy_timer == 0) { 2003 if_printf(ifp, "firmware command timeout, resetting\n"); 2004 wlan_serialize_exit(); 2005 ieee80211_runtask(ic, &sc->sc_restarttask); 2006 wlan_serialize_enter(); 2007 } 2008 } 2009 callout_reset(&sc->sc_wdtimer_callout, hz, iwi_watchdog, sc); 2010 wlan_serialize_exit(); 2011 } 2012 2013 static int 2014 iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *ucred) 2015 { 2016 struct iwi_softc *sc = ifp->if_softc; 2017 struct ieee80211com *ic = ifp->if_l2com; 2018 struct ifreq *ifr = (struct ifreq *) data; 2019 int error = 0, startall = 0; 2020 2021 switch (cmd) { 2022 case SIOCSIFFLAGS: 2023 if (ifp->if_flags & IFF_UP) { 2024 if (!(ifp->if_flags & IFF_RUNNING)) { 2025 iwi_init_locked(sc); 2026 startall = 1; 2027 } 2028 } else { 2029 if (ifp->if_flags & IFF_RUNNING) 2030 iwi_stop_locked(sc); 2031 } 2032 if (startall) 2033 ieee80211_start_all(ic); 2034 break; 2035 case SIOCGIFMEDIA: 2036 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2037 break; 2038 case SIOCGIFADDR: 2039 error = ether_ioctl(ifp, cmd, data); 2040 break; 2041 default: 2042 error = EINVAL; 2043 break; 2044 } 2045 return error; 2046 } 2047 2048 static void 2049 iwi_stop_master(struct iwi_softc *sc) 2050 { 2051 uint32_t tmp; 2052 int ntries; 2053 2054 /* disable interrupts */ 2055 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 2056 2057 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 2058 for (ntries = 0; ntries < 5; ntries++) { 2059 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2060 break; 2061 DELAY(10); 2062 } 2063 if (ntries == 5) 2064 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2065 2066 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2067 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 2068 2069 sc->flags &= ~IWI_FLAG_FW_INITED; 2070 } 2071 2072 static int 2073 iwi_reset(struct iwi_softc *sc) 2074 { 2075 uint32_t tmp; 2076 int i, ntries; 2077 2078 iwi_stop_master(sc); 2079 2080 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2081 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2082 2083 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 2084 2085 /* wait for clock stabilization */ 2086 for (ntries = 0; ntries < 1000; ntries++) { 2087 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 2088 break; 2089 DELAY(200); 2090 } 2091 if (ntries == 1000) { 2092 device_printf(sc->sc_dev, 2093 "timeout waiting for clock stabilization\n"); 2094 return EIO; 2095 } 2096 2097 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2098 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET); 2099 2100 DELAY(10); 2101 2102 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2103 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2104 2105 /* clear NIC memory */ 2106 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 2107 for (i = 0; i < 0xc000; i++) 2108 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2109 2110 return 0; 2111 } 2112 2113 static const struct iwi_firmware_ohdr * 2114 iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw) 2115 { 2116 const struct firmware *fp = fw->fp; 2117 const struct iwi_firmware_ohdr *hdr; 2118 2119 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) { 2120 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name); 2121 return NULL; 2122 } 2123 hdr = (const struct iwi_firmware_ohdr *)fp->data; 2124 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2125 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2126 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n", 2127 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2128 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR, 2129 IWI_FW_REQ_MINOR); 2130 return NULL; 2131 } 2132 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr); 2133 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr); 2134 fw->name = fp->name; 2135 return hdr; 2136 } 2137 2138 static const struct iwi_firmware_ohdr * 2139 iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw) 2140 { 2141 const struct iwi_firmware_ohdr *hdr; 2142 2143 hdr = iwi_setup_ofw(sc, fw); 2144 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) { 2145 device_printf(sc->sc_dev, "%s is not a ucode image\n", 2146 fw->name); 2147 hdr = NULL; 2148 } 2149 return hdr; 2150 } 2151 2152 static void 2153 iwi_getfw(struct iwi_fw *fw, const char *fwname, 2154 struct iwi_fw *uc, const char *ucname) 2155 { 2156 wlan_assert_serialized(); 2157 wlan_serialize_exit(); 2158 if (fw->fp == NULL) 2159 fw->fp = firmware_get(fwname); 2160 2161 /* NB: pre-3.0 ucode is packaged separately */ 2162 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300) 2163 uc->fp = firmware_get(ucname); 2164 wlan_serialize_enter(); 2165 } 2166 2167 /* 2168 * Get the required firmware images if not already loaded. 2169 * Note that we hold firmware images so long as the device 2170 * is marked up in case we need to reload them on device init. 2171 * This is necessary because we re-init the device sometimes 2172 * from a context where we cannot read from the filesystem 2173 * (e.g. from the taskqueue thread when rfkill is re-enabled). 2174 * XXX return 0 on success, 1 on error. 2175 * 2176 * NB: the order of get'ing and put'ing images here is 2177 * intentional to support handling firmware images bundled 2178 * by operating mode and/or all together in one file with 2179 * the boot firmware as "master". 2180 */ 2181 static int 2182 iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode) 2183 { 2184 const struct iwi_firmware_hdr *hdr; 2185 const struct firmware *fp; 2186 2187 wlan_serialize_enter(); 2188 2189 /* invalidate cached firmware on mode change */ 2190 if (sc->fw_mode != opmode) 2191 iwi_put_firmware(sc); 2192 2193 switch (opmode) { 2194 case IEEE80211_M_STA: 2195 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss"); 2196 break; 2197 case IEEE80211_M_IBSS: 2198 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss"); 2199 break; 2200 case IEEE80211_M_MONITOR: 2201 iwi_getfw(&sc->fw_fw, "iwi_monitor", 2202 &sc->fw_uc, "iwi_ucode_monitor"); 2203 break; 2204 default: 2205 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 2206 wlan_serialize_exit(); 2207 return EINVAL; 2208 } 2209 fp = sc->fw_fw.fp; 2210 if (fp == NULL) { 2211 device_printf(sc->sc_dev, "could not load firmware\n"); 2212 goto bad; 2213 } 2214 if (fp->version < 300) { 2215 /* 2216 * Firmware prior to 3.0 was packaged as separate 2217 * boot, firmware, and ucode images. Verify the 2218 * ucode image was read in, retrieve the boot image 2219 * if needed, and check version stamps for consistency. 2220 * The version stamps in the data are also checked 2221 * above; this is a bit paranoid but is a cheap 2222 * safeguard against mis-packaging. 2223 */ 2224 if (sc->fw_uc.fp == NULL) { 2225 device_printf(sc->sc_dev, "could not load ucode\n"); 2226 goto bad; 2227 } 2228 if (sc->fw_boot.fp == NULL) { 2229 sc->fw_boot.fp = firmware_get("iwi_boot"); 2230 if (sc->fw_boot.fp == NULL) { 2231 device_printf(sc->sc_dev, 2232 "could not load boot firmware\n"); 2233 goto bad; 2234 } 2235 } 2236 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version || 2237 sc->fw_boot.fp->version != sc->fw_uc.fp->version) { 2238 device_printf(sc->sc_dev, 2239 "firmware version mismatch: " 2240 "'%s' is %d, '%s' is %d, '%s' is %d\n", 2241 sc->fw_boot.fp->name, sc->fw_boot.fp->version, 2242 sc->fw_uc.fp->name, sc->fw_uc.fp->version, 2243 sc->fw_fw.fp->name, sc->fw_fw.fp->version 2244 ); 2245 goto bad; 2246 } 2247 /* 2248 * Check and setup each image. 2249 */ 2250 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL || 2251 iwi_setup_ofw(sc, &sc->fw_boot) == NULL || 2252 iwi_setup_ofw(sc, &sc->fw_fw) == NULL) 2253 goto bad; 2254 } else { 2255 /* 2256 * Check and setup combined image. 2257 */ 2258 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) { 2259 device_printf(sc->sc_dev, "image '%s' too small\n", 2260 fp->name); 2261 goto bad; 2262 } 2263 hdr = (const struct iwi_firmware_hdr *)fp->data; 2264 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize) 2265 + le32toh(hdr->fsize)) { 2266 device_printf(sc->sc_dev, "image '%s' too small (2)\n", 2267 fp->name); 2268 goto bad; 2269 } 2270 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr); 2271 sc->fw_boot.size = le32toh(hdr->bsize); 2272 sc->fw_boot.name = fp->name; 2273 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size; 2274 sc->fw_uc.size = le32toh(hdr->usize); 2275 sc->fw_uc.name = fp->name; 2276 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size; 2277 sc->fw_fw.size = le32toh(hdr->fsize); 2278 sc->fw_fw.name = fp->name; 2279 } 2280 #if 0 2281 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n", 2282 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size); 2283 #endif 2284 2285 sc->fw_mode = opmode; 2286 wlan_serialize_exit(); 2287 return 0; 2288 bad: 2289 iwi_put_firmware(sc); 2290 wlan_serialize_exit(); 2291 return 1; 2292 } 2293 2294 static void 2295 iwi_put_fw(struct iwi_fw *fw) 2296 { 2297 wlan_assert_serialized(); 2298 wlan_serialize_exit(); 2299 if (fw->fp != NULL) { 2300 firmware_put(fw->fp, FIRMWARE_UNLOAD); 2301 fw->fp = NULL; 2302 } 2303 wlan_serialize_enter(); 2304 fw->data = NULL; 2305 fw->size = 0; 2306 fw->name = NULL; 2307 } 2308 2309 /* 2310 * Release any cached firmware images. 2311 */ 2312 static void 2313 iwi_put_firmware(struct iwi_softc *sc) 2314 { 2315 iwi_put_fw(&sc->fw_uc); 2316 iwi_put_fw(&sc->fw_fw); 2317 iwi_put_fw(&sc->fw_boot); 2318 } 2319 2320 static int 2321 iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw) 2322 { 2323 uint32_t tmp; 2324 const uint16_t *w; 2325 const char *uc = fw->data; 2326 size_t size = fw->size; 2327 int i, ntries, error; 2328 2329 error = 0; 2330 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 2331 IWI_RST_STOP_MASTER); 2332 for (ntries = 0; ntries < 5; ntries++) { 2333 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2334 break; 2335 DELAY(10); 2336 } 2337 if (ntries == 5) { 2338 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2339 error = EIO; 2340 goto fail; 2341 } 2342 2343 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 2344 DELAY(5000); 2345 2346 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2347 tmp &= ~IWI_RST_PRINCETON_RESET; 2348 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2349 2350 DELAY(5000); 2351 MEM_WRITE_4(sc, 0x3000e0, 0); 2352 DELAY(1000); 2353 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1); 2354 DELAY(1000); 2355 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0); 2356 DELAY(1000); 2357 MEM_WRITE_1(sc, 0x200000, 0x00); 2358 MEM_WRITE_1(sc, 0x200000, 0x40); 2359 DELAY(1000); 2360 2361 /* write microcode into adapter memory */ 2362 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2) 2363 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 2364 2365 MEM_WRITE_1(sc, 0x200000, 0x00); 2366 MEM_WRITE_1(sc, 0x200000, 0x80); 2367 2368 /* wait until we get an answer */ 2369 for (ntries = 0; ntries < 100; ntries++) { 2370 if (MEM_READ_1(sc, 0x200000) & 1) 2371 break; 2372 DELAY(100); 2373 } 2374 if (ntries == 100) { 2375 device_printf(sc->sc_dev, 2376 "timeout waiting for ucode to initialize\n"); 2377 error = EIO; 2378 goto fail; 2379 } 2380 2381 /* read the answer or the firmware will not initialize properly */ 2382 for (i = 0; i < 7; i++) 2383 MEM_READ_4(sc, 0x200004); 2384 2385 MEM_WRITE_1(sc, 0x200000, 0x00); 2386 2387 fail: 2388 return error; 2389 } 2390 2391 /* macro to handle unaligned little endian data in firmware image */ 2392 #define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2393 2394 static int 2395 iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw) 2396 { 2397 u_char *p, *end; 2398 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp; 2399 int ntries, error; 2400 2401 /* copy firmware image to DMA memory */ 2402 memcpy(sc->fw_virtaddr, fw->data, fw->size); 2403 2404 /* make sure the adapter will get up-to-date values */ 2405 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE); 2406 2407 /* tell the adapter where the command blocks are stored */ 2408 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2409 2410 /* 2411 * Store command blocks into adapter's internal memory using register 2412 * indirections. The adapter will read the firmware image through DMA 2413 * using information stored in command blocks. 2414 */ 2415 src = sc->fw_physaddr; 2416 p = sc->fw_virtaddr; 2417 end = p + fw->size; 2418 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2419 2420 while (p < end) { 2421 dst = GETLE32(p); p += 4; src += 4; 2422 len = GETLE32(p); p += 4; src += 4; 2423 p += len; 2424 2425 while (len > 0) { 2426 mlen = min(len, IWI_CB_MAXDATALEN); 2427 2428 ctl = IWI_CB_DEFAULT_CTL | mlen; 2429 sum = ctl ^ src ^ dst; 2430 2431 /* write a command block */ 2432 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2433 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 2434 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 2435 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2436 2437 src += mlen; 2438 dst += mlen; 2439 len -= mlen; 2440 } 2441 } 2442 2443 /* write a fictive final command block (sentinel) */ 2444 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2445 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2446 2447 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2448 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 2449 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2450 2451 /* tell the adapter to start processing command blocks */ 2452 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2453 2454 /* wait until the adapter reaches the sentinel */ 2455 for (ntries = 0; ntries < 400; ntries++) { 2456 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2457 break; 2458 DELAY(100); 2459 } 2460 /* sync dma, just in case */ 2461 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE); 2462 if (ntries == 400) { 2463 device_printf(sc->sc_dev, 2464 "timeout processing command blocks for %s firmware\n", 2465 fw->name); 2466 return EIO; 2467 } 2468 2469 /* we're done with command blocks processing */ 2470 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2471 2472 /* allow interrupts so we know when the firmware is ready */ 2473 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2474 2475 /* tell the adapter to initialize the firmware */ 2476 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2477 2478 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2479 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 2480 2481 /* wait at most one second for firmware initialization to complete */ 2482 error = zsleep(sc, &wlan_global_serializer, 0, "iwiinit", hz); 2483 if (error != 0) { 2484 device_printf(sc->sc_dev, "timeout waiting for firmware " 2485 "initialization to complete\n"); 2486 } 2487 2488 return error; 2489 } 2490 2491 static int 2492 iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap) 2493 { 2494 uint32_t data; 2495 2496 if (vap->iv_flags & IEEE80211_F_PMGTON) { 2497 /* XXX set more fine-grained operation */ 2498 data = htole32(IWI_POWER_MODE_MAX); 2499 } else 2500 data = htole32(IWI_POWER_MODE_CAM); 2501 2502 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2503 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data); 2504 } 2505 2506 static int 2507 iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap) 2508 { 2509 struct iwi_wep_key wepkey; 2510 struct ieee80211_key *wk; 2511 int error, i; 2512 2513 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2514 wk = &vap->iv_nw_keys[i]; 2515 2516 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2517 wepkey.idx = i; 2518 wepkey.len = wk->wk_keylen; 2519 memset(wepkey.key, 0, sizeof wepkey.key); 2520 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2521 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2522 wepkey.len)); 2523 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2524 sizeof wepkey); 2525 if (error != 0) 2526 return error; 2527 } 2528 return 0; 2529 } 2530 2531 static int 2532 iwi_config(struct iwi_softc *sc) 2533 { 2534 struct ifnet *ifp = sc->sc_ifp; 2535 struct ieee80211com *ic = ifp->if_l2com; 2536 struct iwi_configuration config; 2537 struct iwi_rateset rs; 2538 struct iwi_txpower power; 2539 uint32_t data; 2540 int error, i; 2541 const uint8_t *eaddr = IF_LLADDR(ifp); 2542 char ethstr[ETHER_ADDRSTRLEN + 1]; 2543 2544 DPRINTF(("Setting MAC address to %s\n", kether_ntoa(eaddr, ethstr))); 2545 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp), 2546 IEEE80211_ADDR_LEN); 2547 if (error != 0) 2548 return error; 2549 2550 memset(&config, 0, sizeof config); 2551 config.bluetooth_coexistence = sc->bluetooth; 2552 config.silence_threshold = 0x1e; 2553 config.antenna = sc->antenna; 2554 config.multicast_enabled = 1; 2555 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2556 config.disable_unicast_decryption = 1; 2557 config.disable_multicast_decryption = 1; 2558 DPRINTF(("Configuring adapter\n")); 2559 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2560 if (error != 0) 2561 return error; 2562 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2563 power.mode = IWI_MODE_11B; 2564 power.nchan = 11; 2565 for (i = 0; i < 11; i++) { 2566 power.chan[i].chan = i + 1; 2567 power.chan[i].power = IWI_TXPOWER_MAX; 2568 } 2569 DPRINTF(("Setting .11b channels tx power\n")); 2570 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2571 if (error != 0) 2572 return error; 2573 2574 power.mode = IWI_MODE_11G; 2575 DPRINTF(("Setting .11g channels tx power\n")); 2576 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2577 if (error != 0) 2578 return error; 2579 } 2580 2581 memset(&rs, 0, sizeof rs); 2582 rs.mode = IWI_MODE_11G; 2583 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2584 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2585 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2586 rs.nrates); 2587 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2588 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2589 if (error != 0) 2590 return error; 2591 2592 memset(&rs, 0, sizeof rs); 2593 rs.mode = IWI_MODE_11A; 2594 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2595 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2596 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2597 rs.nrates); 2598 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2599 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2600 if (error != 0) 2601 return error; 2602 2603 data = htole32(karc4random()); 2604 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2605 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data); 2606 if (error != 0) 2607 return error; 2608 2609 /* enable adapter */ 2610 DPRINTF(("Enabling adapter\n")); 2611 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0); 2612 } 2613 2614 static __inline void 2615 set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type) 2616 { 2617 uint8_t *st = &scan->scan_type[ix / 2]; 2618 if (ix % 2) 2619 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0); 2620 else 2621 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4); 2622 } 2623 2624 static int 2625 scan_type(const struct ieee80211_scan_state *ss, 2626 const struct ieee80211_channel *chan) 2627 { 2628 /* We can only set one essid for a directed scan */ 2629 if (ss->ss_nssid != 0) 2630 return IWI_SCAN_TYPE_BDIRECTED; 2631 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) && 2632 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) 2633 return IWI_SCAN_TYPE_BROADCAST; 2634 return IWI_SCAN_TYPE_PASSIVE; 2635 } 2636 2637 static __inline int 2638 scan_band(const struct ieee80211_channel *c) 2639 { 2640 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ; 2641 } 2642 2643 /* 2644 * Start a scan on the current channel or all channels. 2645 */ 2646 static int 2647 iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan) 2648 { 2649 struct ieee80211com *ic; 2650 struct ieee80211_channel *chan; 2651 struct ieee80211_scan_state *ss; 2652 struct iwi_scan_ext scan; 2653 int error = 0; 2654 2655 if (sc->fw_state == IWI_FW_SCANNING) { 2656 /* 2657 * This should not happen as we only trigger scan_next after 2658 * completion 2659 */ 2660 DPRINTF(("%s: called too early - still scanning\n", __func__)); 2661 return (EBUSY); 2662 } 2663 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING); 2664 2665 ic = sc->sc_ifp->if_l2com; 2666 ss = ic->ic_scan; 2667 2668 memset(&scan, 0, sizeof scan); 2669 scan.full_scan_index = htole32(++sc->sc_scangen); 2670 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell); 2671 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) { 2672 /* 2673 * Use very short dwell times for when we send probe request 2674 * frames. Without this bg scans hang. Ideally this should 2675 * be handled with early-termination as done by net80211 but 2676 * that's not feasible (aborting a scan is problematic). 2677 */ 2678 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30); 2679 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30); 2680 } else { 2681 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell); 2682 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell); 2683 } 2684 2685 /* We can only set one essid for a directed scan */ 2686 if (ss->ss_nssid != 0) { 2687 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid, 2688 ss->ss_ssid[0].len); 2689 if (error) 2690 return (error); 2691 } 2692 2693 if (allchan) { 2694 int i, next, band, b, bstart; 2695 /* 2696 * Convert scan list to run-length encoded channel list 2697 * the firmware requires (preserving the order setup by 2698 * net80211). The first entry in each run specifies the 2699 * band and the count of items in the run. 2700 */ 2701 next = 0; /* next open slot */ 2702 bstart = 0; /* NB: not needed, silence compiler */ 2703 band = -1; /* NB: impossible value */ 2704 KASSERT(ss->ss_last > 0, ("no channels")); 2705 for (i = 0; i < ss->ss_last; i++) { 2706 chan = ss->ss_chans[i]; 2707 b = scan_band(chan); 2708 if (b != band) { 2709 if (band != -1) 2710 scan.channels[bstart] = 2711 (next - bstart) | band; 2712 /* NB: this allocates a slot for the run-len */ 2713 band = b, bstart = next++; 2714 } 2715 if (next >= IWI_SCAN_CHANNELS) { 2716 DPRINTF(("truncating scan list\n")); 2717 break; 2718 } 2719 scan.channels[next] = ieee80211_chan2ieee(ic, chan); 2720 set_scan_type(&scan, next, scan_type(ss, chan)); 2721 next++; 2722 } 2723 scan.channels[bstart] = (next - bstart) | band; 2724 } else { 2725 /* Scan the current channel only */ 2726 chan = ic->ic_curchan; 2727 scan.channels[0] = 1 | scan_band(chan); 2728 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2729 set_scan_type(&scan, 1, scan_type(ss, chan)); 2730 } 2731 #ifdef IWI_DEBUG 2732 if (iwi_debug > 0) { 2733 static const char *scantype[8] = 2734 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" }; 2735 int i; 2736 kprintf("Scan request: index %u dwell %d/%d/%d\n" 2737 , le32toh(scan.full_scan_index) 2738 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE]) 2739 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST]) 2740 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED]) 2741 ); 2742 i = 0; 2743 do { 2744 int run = scan.channels[i]; 2745 if (run == 0) 2746 break; 2747 kprintf("Scan %d %s channels:", run & 0x3f, 2748 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz"); 2749 for (run &= 0x3f, i++; run > 0; run--, i++) { 2750 uint8_t type = scan.scan_type[i/2]; 2751 kprintf(" %u/%s", scan.channels[i], 2752 scantype[(i & 1 ? type : type>>4) & 7]); 2753 } 2754 kprintf("\n"); 2755 } while (i < IWI_SCAN_CHANNELS); 2756 } 2757 #endif 2758 2759 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan)); 2760 } 2761 2762 static int 2763 iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm) 2764 { 2765 struct iwi_sensitivity sens; 2766 2767 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm)); 2768 2769 memset(&sens, 0, sizeof sens); 2770 sens.rssi = htole16(rssi_dbm); 2771 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens); 2772 } 2773 2774 static int 2775 iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap) 2776 { 2777 struct ieee80211com *ic = vap->iv_ic; 2778 struct ifnet *ifp = vap->iv_ifp; 2779 struct ieee80211_node *ni = vap->iv_bss; 2780 struct iwi_configuration config; 2781 struct iwi_associate *assoc = &sc->assoc; 2782 struct iwi_rateset rs; 2783 uint16_t capinfo; 2784 uint32_t data; 2785 int error, mode; 2786 char ethstr[2][ETHER_ADDRSTRLEN + 1]; 2787 2788 if (sc->flags & IWI_FLAG_ASSOCIATED) { 2789 DPRINTF(("Already associated\n")); 2790 return (-1); 2791 } 2792 2793 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING); 2794 error = 0; 2795 mode = 0; 2796 2797 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) 2798 mode = IWI_MODE_11A; 2799 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan)) 2800 mode = IWI_MODE_11G; 2801 if (IEEE80211_IS_CHAN_B(ic->ic_curchan)) 2802 mode = IWI_MODE_11B; 2803 2804 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2805 memset(&config, 0, sizeof config); 2806 config.bluetooth_coexistence = sc->bluetooth; 2807 config.antenna = sc->antenna; 2808 config.multicast_enabled = 1; 2809 if (mode == IWI_MODE_11G) 2810 config.use_protection = 1; 2811 config.answer_pbreq = 2812 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2813 config.disable_unicast_decryption = 1; 2814 config.disable_multicast_decryption = 1; 2815 DPRINTF(("Configuring adapter\n")); 2816 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2817 if (error != 0) 2818 goto done; 2819 } 2820 2821 #ifdef IWI_DEBUG 2822 if (iwi_debug > 0) { 2823 kprintf("Setting ESSID to "); 2824 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2825 kprintf("\n"); 2826 } 2827 #endif 2828 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen); 2829 if (error != 0) 2830 goto done; 2831 2832 error = iwi_setpowermode(sc, vap); 2833 if (error != 0) 2834 goto done; 2835 2836 data = htole32(vap->iv_rtsthreshold); 2837 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2838 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2839 if (error != 0) 2840 goto done; 2841 2842 data = htole32(vap->iv_fragthreshold); 2843 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2844 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2845 if (error != 0) 2846 goto done; 2847 2848 /* the rate set has already been "negotiated" */ 2849 memset(&rs, 0, sizeof rs); 2850 rs.mode = mode; 2851 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2852 rs.nrates = ni->ni_rates.rs_nrates; 2853 if (rs.nrates > IWI_RATESET_SIZE) { 2854 DPRINTF(("Truncating negotiated rate set from %u\n", 2855 rs.nrates)); 2856 rs.nrates = IWI_RATESET_SIZE; 2857 } 2858 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2859 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2860 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2861 if (error != 0) 2862 goto done; 2863 2864 memset(assoc, 0, sizeof *assoc); 2865 2866 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) { 2867 /* NB: don't treat WME setup as failure */ 2868 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0) 2869 assoc->policy |= htole16(IWI_POLICY_WME); 2870 /* XXX complain on failure? */ 2871 } 2872 2873 if (vap->iv_appie_wpa != NULL) { 2874 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2875 2876 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len)); 2877 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len); 2878 if (error != 0) 2879 goto done; 2880 } 2881 2882 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni)); 2883 if (error != 0) 2884 goto done; 2885 2886 assoc->mode = mode; 2887 assoc->chan = ic->ic_curchan->ic_ieee; 2888 /* 2889 * NB: do not arrange for shared key auth w/o privacy 2890 * (i.e. a wep key); it causes a firmware error. 2891 */ 2892 if ((vap->iv_flags & IEEE80211_F_PRIVACY) && 2893 ni->ni_authmode == IEEE80211_AUTH_SHARED) { 2894 assoc->auth = IWI_AUTH_SHARED; 2895 /* 2896 * It's possible to have privacy marked but no default 2897 * key setup. This typically is due to a user app bug 2898 * but if we blindly grab the key the firmware will 2899 * barf so avoid it for now. 2900 */ 2901 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) 2902 assoc->auth |= vap->iv_def_txkey << 4; 2903 2904 error = iwi_setwepkeys(sc, vap); 2905 if (error != 0) 2906 goto done; 2907 } 2908 if (vap->iv_flags & IEEE80211_F_WPA) 2909 assoc->policy |= htole16(IWI_POLICY_WPA); 2910 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2911 assoc->type = IWI_HC_IBSS_START; 2912 else 2913 assoc->type = IWI_HC_ASSOC; 2914 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8); 2915 2916 if (vap->iv_opmode == IEEE80211_M_IBSS) 2917 capinfo = IEEE80211_CAPINFO_IBSS; 2918 else 2919 capinfo = IEEE80211_CAPINFO_ESS; 2920 if (vap->iv_flags & IEEE80211_F_PRIVACY) 2921 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2922 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2923 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 2924 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2925 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 2926 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2927 assoc->capinfo = htole16(capinfo); 2928 2929 assoc->lintval = htole16(ic->ic_lintval); 2930 assoc->intval = htole16(ni->ni_intval); 2931 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid); 2932 if (vap->iv_opmode == IEEE80211_M_IBSS) 2933 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr); 2934 else 2935 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid); 2936 2937 DPRINTF(("%s bssid %s dst %s channel %u policy 0x%x " 2938 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2939 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join", 2940 kether_ntoa(assoc->bssid, ethstr[0]), kether_ntoa(assoc->dst, ethstr[1]), 2941 assoc->chan, le16toh(assoc->policy), assoc->auth, 2942 le16toh(assoc->capinfo), le16toh(assoc->lintval), 2943 le16toh(assoc->intval))); 2944 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2945 done: 2946 if (error) 2947 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 2948 2949 return (error); 2950 } 2951 2952 static void 2953 iwi_disassoc_task(void *arg, int pending) 2954 { 2955 struct iwi_softc *sc = arg; 2956 2957 wlan_serialize_enter(); 2958 iwi_disassociate(sc, 0); 2959 wlan_serialize_exit(); 2960 } 2961 2962 static int 2963 iwi_disassociate(struct iwi_softc *sc, int quiet) 2964 { 2965 struct iwi_associate *assoc = &sc->assoc; 2966 char ethstr[ETHER_ADDRSTRLEN + 1]; 2967 2968 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) { 2969 DPRINTF(("Not associated\n")); 2970 return (-1); 2971 } 2972 2973 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING); 2974 2975 if (quiet) 2976 assoc->type = IWI_HC_DISASSOC_QUIET; 2977 else 2978 assoc->type = IWI_HC_DISASSOC; 2979 2980 DPRINTF(("Trying to disassociate from %s channel %u\n", 2981 kether_ntoa(assoc->bssid, ethstr), assoc->chan)); 2982 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2983 } 2984 2985 /* 2986 * release dma resources for the firmware 2987 */ 2988 static void 2989 iwi_release_fw_dma(struct iwi_softc *sc) 2990 { 2991 if (sc->fw_flags & IWI_FW_HAVE_PHY) 2992 bus_dmamap_unload(sc->fw_dmat, sc->fw_map); 2993 if (sc->fw_flags & IWI_FW_HAVE_MAP) 2994 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map); 2995 if (sc->fw_flags & IWI_FW_HAVE_DMAT) 2996 bus_dma_tag_destroy(sc->fw_dmat); 2997 2998 sc->fw_flags = 0; 2999 sc->fw_dma_size = 0; 3000 sc->fw_dmat = NULL; 3001 sc->fw_map = NULL; 3002 sc->fw_physaddr = 0; 3003 sc->fw_virtaddr = NULL; 3004 } 3005 3006 /* 3007 * allocate the dma descriptor for the firmware. 3008 * Return 0 on success, 1 on error. 3009 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING. 3010 */ 3011 static int 3012 iwi_init_fw_dma(struct iwi_softc *sc, int size) 3013 { 3014 if (sc->fw_dma_size >= size) 3015 return 0; 3016 if (bus_dma_tag_create(NULL, 4, 0, BUS_SPACE_MAXADDR_32BIT, 3017 BUS_SPACE_MAXADDR, NULL, NULL, size, 1, size, 3018 0, &sc->fw_dmat) != 0) { 3019 device_printf(sc->sc_dev, 3020 "could not create firmware DMA tag\n"); 3021 goto error; 3022 } 3023 sc->fw_flags |= IWI_FW_HAVE_DMAT; 3024 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0, 3025 &sc->fw_map) != 0) { 3026 device_printf(sc->sc_dev, 3027 "could not allocate firmware DMA memory\n"); 3028 goto error; 3029 } 3030 sc->fw_flags |= IWI_FW_HAVE_MAP; 3031 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr, 3032 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) { 3033 device_printf(sc->sc_dev, "could not load firmware DMA map\n"); 3034 goto error; 3035 } 3036 sc->fw_flags |= IWI_FW_HAVE_PHY; 3037 sc->fw_dma_size = size; 3038 return 0; 3039 3040 error: 3041 iwi_release_fw_dma(sc); 3042 return 1; 3043 } 3044 3045 static void 3046 iwi_init_locked(struct iwi_softc *sc) 3047 { 3048 struct ifnet *ifp = sc->sc_ifp; 3049 struct iwi_rx_data *data; 3050 int i; 3051 3052 if (sc->fw_state == IWI_FW_LOADING) { 3053 device_printf(sc->sc_dev, "%s: already loading\n", __func__); 3054 return; /* XXX: condvar? */ 3055 } 3056 3057 iwi_stop_locked(sc); 3058 3059 IWI_STATE_BEGIN(sc, IWI_FW_LOADING); 3060 3061 if (iwi_reset(sc) != 0) { 3062 device_printf(sc->sc_dev, "could not reset adapter\n"); 3063 goto fail; 3064 } 3065 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) { 3066 device_printf(sc->sc_dev, 3067 "could not load boot firmware %s\n", sc->fw_boot.name); 3068 goto fail; 3069 } 3070 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) { 3071 device_printf(sc->sc_dev, 3072 "could not load microcode %s\n", sc->fw_uc.name); 3073 goto fail; 3074 } 3075 3076 iwi_stop_master(sc); 3077 3078 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr); 3079 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 3080 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 3081 3082 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr); 3083 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 3084 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 3085 3086 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr); 3087 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 3088 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 3089 3090 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr); 3091 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 3092 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 3093 3094 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr); 3095 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 3096 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 3097 3098 for (i = 0; i < sc->rxq.count; i++) { 3099 data = &sc->rxq.data[i]; 3100 CSR_WRITE_4(sc, data->reg, data->physaddr); 3101 } 3102 3103 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1); 3104 3105 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) { 3106 device_printf(sc->sc_dev, 3107 "could not load main firmware %s\n", sc->fw_fw.name); 3108 goto fail; 3109 } 3110 sc->flags |= IWI_FLAG_FW_INITED; 3111 3112 IWI_STATE_END(sc, IWI_FW_LOADING); 3113 3114 if (iwi_config(sc) != 0) { 3115 device_printf(sc->sc_dev, "unable to enable adapter\n"); 3116 goto fail2; 3117 } 3118 3119 callout_reset(&sc->sc_wdtimer_callout, hz, iwi_watchdog, sc); 3120 ifq_clr_oactive(&ifp->if_snd); 3121 ifp->if_flags |= IFF_RUNNING; 3122 return; 3123 fail: 3124 IWI_STATE_END(sc, IWI_FW_LOADING); 3125 fail2: 3126 iwi_stop_locked(sc); 3127 } 3128 3129 static void 3130 iwi_init(void *priv) 3131 { 3132 struct iwi_softc *sc = priv; 3133 struct ifnet *ifp = sc->sc_ifp; 3134 struct ieee80211com *ic = ifp->if_l2com; 3135 3136 iwi_init_locked(sc); 3137 3138 if (ifp->if_flags & IFF_RUNNING) 3139 ieee80211_start_all(ic); 3140 } 3141 3142 static void 3143 iwi_stop_locked(void *priv) 3144 { 3145 struct iwi_softc *sc = priv; 3146 struct ifnet *ifp = sc->sc_ifp; 3147 3148 ifp->if_flags &= ~IFF_RUNNING; 3149 ifq_clr_oactive(&ifp->if_snd); 3150 3151 if (sc->sc_softled) { 3152 callout_stop(&sc->sc_ledtimer_callout); 3153 sc->sc_blinking = 0; 3154 } 3155 callout_stop(&sc->sc_wdtimer_callout); 3156 callout_stop(&sc->sc_rftimer_callout); 3157 3158 iwi_stop_master(sc); 3159 3160 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET); 3161 3162 /* reset rings */ 3163 iwi_reset_cmd_ring(sc, &sc->cmdq); 3164 iwi_reset_tx_ring(sc, &sc->txq[0]); 3165 iwi_reset_tx_ring(sc, &sc->txq[1]); 3166 iwi_reset_tx_ring(sc, &sc->txq[2]); 3167 iwi_reset_tx_ring(sc, &sc->txq[3]); 3168 iwi_reset_rx_ring(sc, &sc->rxq); 3169 3170 sc->sc_tx_timer = 0; 3171 sc->sc_state_timer = 0; 3172 sc->sc_busy_timer = 0; 3173 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED); 3174 sc->fw_state = IWI_FW_IDLE; 3175 wakeup(sc); 3176 } 3177 3178 static void 3179 iwi_stop(struct iwi_softc *sc) 3180 { 3181 iwi_stop_locked(sc); 3182 } 3183 3184 static void 3185 iwi_restart_task(void *arg, int npending) 3186 { 3187 struct iwi_softc *sc = arg; 3188 3189 wlan_serialize_enter(); 3190 iwi_init(sc); 3191 wlan_serialize_exit(); 3192 } 3193 3194 /* 3195 * Return whether or not the radio is enabled in hardware 3196 * (i.e. the rfkill switch is "off"). 3197 */ 3198 static int 3199 iwi_getrfkill(struct iwi_softc *sc) 3200 { 3201 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 3202 } 3203 3204 static void 3205 iwi_radio_on_task(void *arg, int pending) 3206 { 3207 struct iwi_softc *sc = arg; 3208 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3209 3210 wlan_serialize_enter(); 3211 device_printf(sc->sc_dev, "radio turned on\n"); 3212 3213 iwi_init(sc); 3214 ieee80211_notify_radio(ic, 1); 3215 wlan_serialize_exit(); 3216 } 3217 3218 static void 3219 iwi_rfkill_poll(void *arg) 3220 { 3221 struct iwi_softc *sc = arg; 3222 3223 /* 3224 * Check for a change in rfkill state. We get an 3225 * interrupt when a radio is disabled but not when 3226 * it is enabled so we must poll for the latter. 3227 */ 3228 if (!iwi_getrfkill(sc)) { 3229 struct ifnet *ifp = sc->sc_ifp; 3230 struct ieee80211com *ic = ifp->if_l2com; 3231 3232 ieee80211_runtask(ic, &sc->sc_radiontask); 3233 return; 3234 } 3235 callout_reset(&sc->sc_rftimer_callout, 2*hz, iwi_rfkill_poll, sc); 3236 } 3237 3238 static void 3239 iwi_radio_off_task(void *arg, int pending) 3240 { 3241 struct iwi_softc *sc = arg; 3242 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3243 3244 wlan_serialize_enter(); 3245 device_printf(sc->sc_dev, "radio turned off\n"); 3246 3247 ieee80211_notify_radio(ic, 0); 3248 3249 iwi_stop_locked(sc); 3250 iwi_rfkill_poll(sc); 3251 wlan_serialize_exit(); 3252 } 3253 3254 static int 3255 iwi_sysctl_stats(SYSCTL_HANDLER_ARGS) 3256 { 3257 struct iwi_softc *sc = arg1; 3258 uint32_t size, buf[128]; 3259 3260 memset(buf, 0, sizeof buf); 3261 3262 if (!(sc->flags & IWI_FLAG_FW_INITED)) 3263 return SYSCTL_OUT(req, buf, sizeof buf); 3264 3265 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 3266 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 3267 3268 return SYSCTL_OUT(req, buf, size); 3269 } 3270 3271 static int 3272 iwi_sysctl_radio(SYSCTL_HANDLER_ARGS) 3273 { 3274 struct iwi_softc *sc = arg1; 3275 int val = !iwi_getrfkill(sc); 3276 3277 return SYSCTL_OUT(req, &val, sizeof val); 3278 } 3279 3280 /* 3281 * Add sysctl knobs. 3282 */ 3283 static void 3284 iwi_sysctlattach(struct iwi_softc *sc) 3285 { 3286 struct sysctl_ctx_list *ctx; 3287 struct sysctl_oid *tree; 3288 3289 ctx = device_get_sysctl_ctx(sc->sc_dev); 3290 tree = device_get_sysctl_tree(sc->sc_dev); 3291 3292 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio", 3293 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I", 3294 "radio transmitter switch state (0=off, 1=on)"); 3295 3296 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats", 3297 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S", 3298 "statistics"); 3299 3300 sc->bluetooth = 0; 3301 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth", 3302 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence"); 3303 3304 sc->antenna = IWI_ANTENNA_AUTO; 3305 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna", 3306 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)"); 3307 } 3308 3309 /* 3310 * LED support. 3311 * 3312 * Different cards have different capabilities. Some have three 3313 * led's while others have only one. The linux ipw driver defines 3314 * led's for link state (associated or not), band (11a, 11g, 11b), 3315 * and for link activity. We use one led and vary the blink rate 3316 * according to the tx/rx traffic a la the ath driver. 3317 */ 3318 3319 static __inline uint32_t 3320 iwi_toggle_event(uint32_t r) 3321 { 3322 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA | 3323 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA); 3324 } 3325 3326 static uint32_t 3327 iwi_read_event(struct iwi_softc *sc) 3328 { 3329 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT); 3330 } 3331 3332 static void 3333 iwi_write_event(struct iwi_softc *sc, uint32_t v) 3334 { 3335 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v); 3336 } 3337 3338 static void 3339 iwi_led_done(void *arg) 3340 { 3341 struct iwi_softc *sc = arg; 3342 3343 sc->sc_blinking = 0; 3344 } 3345 3346 /* 3347 * Turn the activity LED off: flip the pin and then set a timer so no 3348 * update will happen for the specified duration. 3349 */ 3350 static void 3351 iwi_led_off(void *arg) 3352 { 3353 struct iwi_softc *sc = arg; 3354 uint32_t v; 3355 3356 v = iwi_read_event(sc); 3357 v &= ~sc->sc_ledpin; 3358 iwi_write_event(sc, iwi_toggle_event(v)); 3359 callout_reset(&sc->sc_ledtimer_callout, sc->sc_ledoff, iwi_led_done, sc); 3360 } 3361 3362 /* 3363 * Blink the LED according to the specified on/off times. 3364 */ 3365 static void 3366 iwi_led_blink(struct iwi_softc *sc, int on, int off) 3367 { 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 sc->sc_blinking = 1; 3374 sc->sc_ledoff = off; 3375 callout_reset(&sc->sc_ledtimer_callout, on, iwi_led_off, sc); 3376 } 3377 3378 static void 3379 iwi_led_event(struct iwi_softc *sc, int event) 3380 { 3381 /* NB: on/off times from the Atheros NDIS driver, w/ permission */ 3382 static const struct { 3383 u_int rate; /* tx/rx iwi rate */ 3384 u_int16_t timeOn; /* LED on time (ms) */ 3385 u_int16_t timeOff; /* LED off time (ms) */ 3386 } blinkrates[] = { 3387 { IWI_RATE_OFDM54, 40, 10 }, 3388 { IWI_RATE_OFDM48, 44, 11 }, 3389 { IWI_RATE_OFDM36, 50, 13 }, 3390 { IWI_RATE_OFDM24, 57, 14 }, 3391 { IWI_RATE_OFDM18, 67, 16 }, 3392 { IWI_RATE_OFDM12, 80, 20 }, 3393 { IWI_RATE_DS11, 100, 25 }, 3394 { IWI_RATE_OFDM9, 133, 34 }, 3395 { IWI_RATE_OFDM6, 160, 40 }, 3396 { IWI_RATE_DS5, 200, 50 }, 3397 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */ 3398 { IWI_RATE_DS2, 267, 66 }, 3399 { IWI_RATE_DS1, 400, 100 }, 3400 { 0, 500, 130 }, /* unknown rate/polling */ 3401 }; 3402 uint32_t txrate; 3403 int j = 0; /* XXX silence compiler */ 3404 3405 sc->sc_ledevent = ticks; /* time of last event */ 3406 if (sc->sc_blinking) /* don't interrupt active blink */ 3407 return; 3408 switch (event) { 3409 case IWI_LED_POLL: 3410 j = NELEM(blinkrates)-1; 3411 break; 3412 case IWI_LED_TX: 3413 /* read current transmission rate from adapter */ 3414 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 3415 if (blinkrates[sc->sc_txrix].rate != txrate) { 3416 for (j = 0; j < NELEM(blinkrates)-1; j++) 3417 if (blinkrates[j].rate == txrate) 3418 break; 3419 sc->sc_txrix = j; 3420 } else 3421 j = sc->sc_txrix; 3422 break; 3423 case IWI_LED_RX: 3424 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) { 3425 for (j = 0; j < NELEM(blinkrates)-1; j++) 3426 if (blinkrates[j].rate == sc->sc_rxrate) 3427 break; 3428 sc->sc_rxrix = j; 3429 } else 3430 j = sc->sc_rxrix; 3431 break; 3432 } 3433 /* XXX beware of overflow */ 3434 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000, 3435 (blinkrates[j].timeOff * hz) / 1000); 3436 } 3437 3438 static int 3439 iwi_sysctl_softled(SYSCTL_HANDLER_ARGS) 3440 { 3441 struct iwi_softc *sc = arg1; 3442 int softled = sc->sc_softled; 3443 int error; 3444 3445 error = sysctl_handle_int(oidp, &softled, 0, req); 3446 if (error || !req->newptr) 3447 return error; 3448 softled = (softled != 0); 3449 if (softled != sc->sc_softled) { 3450 if (softled) { 3451 uint32_t v = iwi_read_event(sc); 3452 v &= ~sc->sc_ledpin; 3453 iwi_write_event(sc, iwi_toggle_event(v)); 3454 } 3455 sc->sc_softled = softled; 3456 } 3457 return 0; 3458 } 3459 3460 static void 3461 iwi_ledattach(struct iwi_softc *sc) 3462 { 3463 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 3464 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 3465 3466 sc->sc_blinking = 0; 3467 sc->sc_ledstate = 1; 3468 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */ 3469 callout_init(&sc->sc_ledtimer_callout); 3470 3471 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3472 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 3473 iwi_sysctl_softled, "I", "enable/disable software LED support"); 3474 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3475 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0, 3476 "pin setting to turn activity LED on"); 3477 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3478 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0, 3479 "idle time for inactivity LED (ticks)"); 3480 /* XXX for debugging */ 3481 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3482 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0, 3483 "NIC type from EEPROM"); 3484 3485 sc->sc_ledpin = IWI_RST_LED_ACTIVITY; 3486 sc->sc_softled = 1; 3487 3488 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff; 3489 if (sc->sc_nictype == 1) { 3490 /* 3491 * NB: led's are reversed. 3492 */ 3493 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED; 3494 } 3495 } 3496 3497 static void 3498 iwi_scan_start(struct ieee80211com *ic) 3499 { 3500 /* ignore */ 3501 } 3502 3503 static void 3504 iwi_set_channel(struct ieee80211com *ic) 3505 { 3506 struct ifnet *ifp = ic->ic_ifp; 3507 struct iwi_softc *sc = ifp->if_softc; 3508 if (sc->fw_state == IWI_FW_IDLE) 3509 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee); 3510 } 3511 3512 static void 3513 iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3514 { 3515 struct ieee80211vap *vap = ss->ss_vap; 3516 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3517 struct iwi_softc *sc = ifp->if_softc; 3518 3519 if (iwi_scanchan(sc, maxdwell, 0)) 3520 ieee80211_cancel_scan(vap); 3521 } 3522 3523 static void 3524 iwi_scan_mindwell(struct ieee80211_scan_state *ss) 3525 { 3526 /* NB: don't try to abort scan; wait for firmware to finish */ 3527 } 3528 3529 static void 3530 iwi_scan_end(struct ieee80211com *ic) 3531 { 3532 struct ifnet *ifp = ic->ic_ifp; 3533 struct iwi_softc *sc = ifp->if_softc; 3534 3535 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN; 3536 /* NB: make sure we're still scanning */ 3537 if (sc->fw_state == IWI_FW_SCANNING) 3538 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0); 3539 } 3540