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