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