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