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 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD$"); 32 33/*- 34 * Intel(R) PRO/Wireless 2200BG/2225BG/2915ABG driver 35 * http://www.intel.com/network/connectivity/products/wireless/prowireless_mobile.htm 36 */ 37 38#include <sys/param.h> 39#include <sys/sysctl.h> 40#include <sys/sockio.h> 41#include <sys/mbuf.h> 42#include <sys/kernel.h> 43#include <sys/socket.h> 44#include <sys/systm.h> 45#include <sys/malloc.h> 46#include <sys/lock.h> 47#include <sys/mutex.h> 48#include <sys/module.h> 49#include <sys/bus.h> 50#include <sys/endian.h> 51#include <sys/proc.h> 52#include <sys/mount.h> 53#include <sys/namei.h> 54#include <sys/linker.h> 55#include <sys/firmware.h> 56#include <sys/taskqueue.h> 57 58#include <machine/bus.h> 59#include <machine/resource.h> 60#include <sys/rman.h> 61 62#include <dev/pci/pcireg.h> 63#include <dev/pci/pcivar.h> 64 65#include <net/bpf.h> 66#include <net/if.h> 67#include <net/if_arp.h> 68#include <net/ethernet.h> 69#include <net/if_dl.h> 70#include <net/if_media.h> 71#include <net/if_types.h> 72 73#include <net80211/ieee80211_var.h> 74#include <net80211/ieee80211_radiotap.h> 75#include <net80211/ieee80211_input.h> 76#include <net80211/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/iwi/if_iwireg.h> 85#include <dev/iwi/if_iwivar.h> 86 87#define IWI_DEBUG 88#ifdef IWI_DEBUG 89#define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0) 90#define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0) 91int iwi_debug = 0; 92SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level"); 93 94static 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 106MODULE_DEPEND(iwi, pci, 1, 1, 1); 107MODULE_DEPEND(iwi, wlan, 1, 1, 1); 108MODULE_DEPEND(iwi, firmware, 1, 1, 1); 109 110enum { 111 IWI_LED_TX, 112 IWI_LED_RX, 113 IWI_LED_POLL, 114}; 115 116struct iwi_ident { 117 uint16_t vendor; 118 uint16_t device; 119 const char *name; 120}; 121 122static 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 131static struct ieee80211vap *iwi_vap_create(struct ieee80211com *, 132 const char [IFNAMSIZ], int, enum ieee80211_opmode, int, 133 const uint8_t [IEEE80211_ADDR_LEN], 134 const uint8_t [IEEE80211_ADDR_LEN]); 135static void iwi_vap_delete(struct ieee80211vap *); 136static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 137static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 138 int); 139static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 140static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 141static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 142 int, bus_addr_t, bus_addr_t); 143static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 144static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 145static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 146 int); 147static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 148static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 149static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *, 150 const uint8_t [IEEE80211_ADDR_LEN]); 151static void iwi_node_free(struct ieee80211_node *); 152static void iwi_media_status(struct ifnet *, struct ifmediareq *); 153static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 154static void iwi_wme_init(struct iwi_softc *); 155static int iwi_wme_setparams(struct iwi_softc *, struct ieee80211com *); 156static void iwi_update_wme(void *, int); 157static int iwi_wme_update(struct ieee80211com *); 158static uint16_t iwi_read_prom_word(struct iwi_softc *, uint8_t); 159static void iwi_frame_intr(struct iwi_softc *, struct iwi_rx_data *, int, 160 struct iwi_frame *); 161static void iwi_notification_intr(struct iwi_softc *, struct iwi_notif *); 162static void iwi_rx_intr(struct iwi_softc *); 163static void iwi_tx_intr(struct iwi_softc *, struct iwi_tx_ring *); 164static void iwi_intr(void *); 165static int iwi_cmd(struct iwi_softc *, uint8_t, void *, uint8_t); 166static void iwi_write_ibssnode(struct iwi_softc *, const u_int8_t [], int); 167static int iwi_tx_start(struct ifnet *, struct mbuf *, 168 struct ieee80211_node *, int); 169static int iwi_raw_xmit(struct ieee80211_node *, struct mbuf *, 170 const struct ieee80211_bpf_params *); 171static void iwi_start_locked(struct ifnet *); 172static void iwi_start(struct ifnet *); 173static void iwi_watchdog(void *); 174static int iwi_ioctl(struct ifnet *, u_long, caddr_t); 175static void iwi_stop_master(struct iwi_softc *); 176static int iwi_reset(struct iwi_softc *); 177static int iwi_load_ucode(struct iwi_softc *, const struct iwi_fw *); 178static int iwi_load_firmware(struct iwi_softc *, const struct iwi_fw *); 179static void iwi_release_fw_dma(struct iwi_softc *sc); 180static int iwi_config(struct iwi_softc *); 181static int iwi_get_firmware(struct iwi_softc *, enum ieee80211_opmode); 182static void iwi_put_firmware(struct iwi_softc *); 183static void iwi_monitor_scan(void *, int); 184static int iwi_scanchan(struct iwi_softc *, unsigned long, int); 185static void iwi_scan_start(struct ieee80211com *); 186static void iwi_scan_end(struct ieee80211com *); 187static void iwi_set_channel(struct ieee80211com *); 188static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell); 189static void iwi_scan_mindwell(struct ieee80211_scan_state *); 190static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *); 191static void iwi_disassoc(void *, int); 192static int iwi_disassociate(struct iwi_softc *, int quiet); 193static void iwi_init_locked(struct iwi_softc *); 194static void iwi_init(void *); 195static int iwi_init_fw_dma(struct iwi_softc *, int); 196static void iwi_stop_locked(void *); 197static void iwi_stop(struct iwi_softc *); 198static void iwi_restart(void *, int); 199static int iwi_getrfkill(struct iwi_softc *); 200static void iwi_radio_on(void *, int); 201static void iwi_radio_off(void *, int); 202static void iwi_sysctlattach(struct iwi_softc *); 203static void iwi_led_event(struct iwi_softc *, int); 204static void iwi_ledattach(struct iwi_softc *); 205 206static int iwi_probe(device_t); 207static int iwi_attach(device_t); 208static int iwi_detach(device_t); 209static int iwi_shutdown(device_t); 210static int iwi_suspend(device_t); 211static int iwi_resume(device_t); 212 213static device_method_t iwi_methods[] = { 214 /* Device interface */ 215 DEVMETHOD(device_probe, iwi_probe), 216 DEVMETHOD(device_attach, iwi_attach), 217 DEVMETHOD(device_detach, iwi_detach), 218 DEVMETHOD(device_shutdown, iwi_shutdown), 219 DEVMETHOD(device_suspend, iwi_suspend), 220 DEVMETHOD(device_resume, iwi_resume), 221 222 DEVMETHOD_END 223}; 224 225static driver_t iwi_driver = { 226 "iwi", 227 iwi_methods, 228 sizeof (struct iwi_softc) 229}; 230 231static devclass_t iwi_devclass; 232 233DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, NULL, NULL); 234 235MODULE_VERSION(iwi, 1); 236 237static __inline uint8_t 238MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 239{ 240 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 241 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 242} 243 244static __inline uint32_t 245MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 246{ 247 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 248 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 249} 250 251static int 252iwi_probe(device_t dev) 253{ 254 const struct iwi_ident *ident; 255 256 for (ident = iwi_ident_table; ident->name != NULL; ident++) { 257 if (pci_get_vendor(dev) == ident->vendor && 258 pci_get_device(dev) == ident->device) { 259 device_set_desc(dev, ident->name); 260 return (BUS_PROBE_DEFAULT); 261 } 262 } 263 return ENXIO; 264} 265 266static int 267iwi_attach(device_t dev) 268{ 269 struct iwi_softc *sc = device_get_softc(dev); 270 struct ifnet *ifp; 271 struct ieee80211com *ic; 272 uint16_t val; 273 int i, error; 274 uint8_t bands; 275 uint8_t macaddr[IEEE80211_ADDR_LEN]; 276 277 sc->sc_dev = dev; 278 279 ifp = sc->sc_ifp = if_alloc(IFT_IEEE80211); 280 if (ifp == NULL) { 281 device_printf(dev, "can not if_alloc()\n"); 282 return ENXIO; 283 } 284 ic = ifp->if_l2com; 285 286 IWI_LOCK_INIT(sc); 287 288 sc->sc_unr = new_unrhdr(1, IWI_MAX_IBSSNODE-1, &sc->sc_mtx); 289 290 TASK_INIT(&sc->sc_radiontask, 0, iwi_radio_on, sc); 291 TASK_INIT(&sc->sc_radiofftask, 0, iwi_radio_off, sc); 292 TASK_INIT(&sc->sc_restarttask, 0, iwi_restart, sc); 293 TASK_INIT(&sc->sc_disassoctask, 0, iwi_disassoc, sc); 294 TASK_INIT(&sc->sc_wmetask, 0, iwi_update_wme, sc); 295 TASK_INIT(&sc->sc_monitortask, 0, iwi_monitor_scan, sc); 296 297 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 298 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0); 299 300 pci_write_config(dev, 0x41, 0, 1); 301 302 /* enable bus-mastering */ 303 pci_enable_busmaster(dev); 304 305 i = PCIR_BAR(0); 306 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &i, RF_ACTIVE); 307 if (sc->mem == NULL) { 308 device_printf(dev, "could not allocate memory resource\n"); 309 goto fail; 310 } 311 312 sc->sc_st = rman_get_bustag(sc->mem); 313 sc->sc_sh = rman_get_bushandle(sc->mem); 314 315 i = 0; 316 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &i, 317 RF_ACTIVE | RF_SHAREABLE); 318 if (sc->irq == NULL) { 319 device_printf(dev, "could not allocate interrupt resource\n"); 320 goto fail; 321 } 322 323 if (iwi_reset(sc) != 0) { 324 device_printf(dev, "could not reset adapter\n"); 325 goto fail; 326 } 327 328 /* 329 * Allocate rings. 330 */ 331 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 332 device_printf(dev, "could not allocate Cmd ring\n"); 333 goto fail; 334 } 335 336 for (i = 0; i < 4; i++) { 337 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT, 338 IWI_CSR_TX1_RIDX + i * 4, 339 IWI_CSR_TX1_WIDX + i * 4); 340 if (error != 0) { 341 device_printf(dev, "could not allocate Tx ring %d\n", 342 i+i); 343 goto fail; 344 } 345 } 346 347 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 348 device_printf(dev, "could not allocate Rx ring\n"); 349 goto fail; 350 } 351 352 iwi_wme_init(sc); 353 354 ifp->if_softc = sc; 355 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 356 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 357 ifp->if_init = iwi_init; 358 ifp->if_ioctl = iwi_ioctl; 359 ifp->if_start = iwi_start; 360 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 361 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 362 IFQ_SET_READY(&ifp->if_snd); 363 364 ic->ic_ifp = ifp; 365 ic->ic_opmode = IEEE80211_M_STA; 366 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 367 368 /* set device capabilities */ 369 ic->ic_caps = 370 IEEE80211_C_STA /* station mode supported */ 371 | IEEE80211_C_IBSS /* IBSS mode supported */ 372 | IEEE80211_C_MONITOR /* monitor mode supported */ 373 | IEEE80211_C_PMGT /* power save supported */ 374 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 375 | IEEE80211_C_WPA /* 802.11i */ 376 | IEEE80211_C_WME /* 802.11e */ 377#if 0 378 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 379#endif 380 ; 381 382 /* read MAC address from EEPROM */ 383 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 384 macaddr[0] = val & 0xff; 385 macaddr[1] = val >> 8; 386 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 387 macaddr[2] = val & 0xff; 388 macaddr[3] = val >> 8; 389 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 390 macaddr[4] = val & 0xff; 391 macaddr[5] = val >> 8; 392 393 bands = 0; 394 setbit(&bands, IEEE80211_MODE_11B); 395 setbit(&bands, IEEE80211_MODE_11G); 396 if (pci_get_device(dev) >= 0x4223) 397 setbit(&bands, IEEE80211_MODE_11A); 398 ieee80211_init_channels(ic, NULL, &bands); 399 400 ieee80211_ifattach(ic, macaddr); 401 /* override default methods */ 402 ic->ic_node_alloc = iwi_node_alloc; 403 sc->sc_node_free = ic->ic_node_free; 404 ic->ic_node_free = iwi_node_free; 405 ic->ic_raw_xmit = iwi_raw_xmit; 406 ic->ic_scan_start = iwi_scan_start; 407 ic->ic_scan_end = iwi_scan_end; 408 ic->ic_set_channel = iwi_set_channel; 409 ic->ic_scan_curchan = iwi_scan_curchan; 410 ic->ic_scan_mindwell = iwi_scan_mindwell; 411 ic->ic_wme.wme_update = iwi_wme_update; 412 413 ic->ic_vap_create = iwi_vap_create; 414 ic->ic_vap_delete = iwi_vap_delete; 415 416 ieee80211_radiotap_attach(ic, 417 &sc->sc_txtap.wt_ihdr, sizeof(sc->sc_txtap), 418 IWI_TX_RADIOTAP_PRESENT, 419 &sc->sc_rxtap.wr_ihdr, sizeof(sc->sc_rxtap), 420 IWI_RX_RADIOTAP_PRESENT); 421 422 iwi_sysctlattach(sc); 423 iwi_ledattach(sc); 424 425 /* 426 * Hook our interrupt after all initialization is complete. 427 */ 428 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 429 NULL, iwi_intr, sc, &sc->sc_ih); 430 if (error != 0) { 431 device_printf(dev, "could not set up interrupt\n"); 432 goto fail; 433 } 434 435 if (bootverbose) 436 ieee80211_announce(ic); 437 438 return 0; 439fail: 440 /* XXX fix */ 441 iwi_detach(dev); 442 return ENXIO; 443} 444 445static int 446iwi_detach(device_t dev) 447{ 448 struct iwi_softc *sc = device_get_softc(dev); 449 struct ifnet *ifp = sc->sc_ifp; 450 struct ieee80211com *ic = ifp->if_l2com; 451 452 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 453 454 /* NB: do early to drain any pending tasks */ 455 ieee80211_draintask(ic, &sc->sc_radiontask); 456 ieee80211_draintask(ic, &sc->sc_radiofftask); 457 ieee80211_draintask(ic, &sc->sc_restarttask); 458 ieee80211_draintask(ic, &sc->sc_disassoctask); 459 ieee80211_draintask(ic, &sc->sc_monitortask); 460 461 iwi_stop(sc); 462 463 ieee80211_ifdetach(ic); 464 465 iwi_put_firmware(sc); 466 iwi_release_fw_dma(sc); 467 468 iwi_free_cmd_ring(sc, &sc->cmdq); 469 iwi_free_tx_ring(sc, &sc->txq[0]); 470 iwi_free_tx_ring(sc, &sc->txq[1]); 471 iwi_free_tx_ring(sc, &sc->txq[2]); 472 iwi_free_tx_ring(sc, &sc->txq[3]); 473 iwi_free_rx_ring(sc, &sc->rxq); 474 475 bus_release_resource(dev, SYS_RES_IRQ, rman_get_rid(sc->irq), sc->irq); 476 477 bus_release_resource(dev, SYS_RES_MEMORY, rman_get_rid(sc->mem), 478 sc->mem); 479 480 delete_unrhdr(sc->sc_unr); 481 482 IWI_LOCK_DESTROY(sc); 483 484 if_free(ifp); 485 486 return 0; 487} 488 489static struct ieee80211vap * 490iwi_vap_create(struct ieee80211com *ic, const char name[IFNAMSIZ], int unit, 491 enum ieee80211_opmode opmode, int flags, 492 const uint8_t bssid[IEEE80211_ADDR_LEN], 493 const uint8_t mac[IEEE80211_ADDR_LEN]) 494{ 495 struct ifnet *ifp = ic->ic_ifp; 496 struct iwi_softc *sc = ifp->if_softc; 497 struct iwi_vap *ivp; 498 struct ieee80211vap *vap; 499 int i; 500 501 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 502 return NULL; 503 /* 504 * Get firmware image (and possibly dma memory) on mode change. 505 */ 506 if (iwi_get_firmware(sc, opmode)) 507 return NULL; 508 /* allocate DMA memory for mapping firmware image */ 509 i = sc->fw_fw.size; 510 if (sc->fw_boot.size > i) 511 i = sc->fw_boot.size; 512 /* XXX do we dma the ucode as well ? */ 513 if (sc->fw_uc.size > i) 514 i = sc->fw_uc.size; 515 if (iwi_init_fw_dma(sc, i)) 516 return NULL; 517 518 ivp = (struct iwi_vap *) malloc(sizeof(struct iwi_vap), 519 M_80211_VAP, M_NOWAIT | M_ZERO); 520 if (ivp == NULL) 521 return NULL; 522 vap = &ivp->iwi_vap; 523 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 524 /* override the default, the setting comes from the linux driver */ 525 vap->iv_bmissthreshold = 24; 526 /* override with driver methods */ 527 ivp->iwi_newstate = vap->iv_newstate; 528 vap->iv_newstate = iwi_newstate; 529 530 /* complete setup */ 531 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status); 532 ic->ic_opmode = opmode; 533 return vap; 534} 535 536static void 537iwi_vap_delete(struct ieee80211vap *vap) 538{ 539 struct iwi_vap *ivp = IWI_VAP(vap); 540 541 ieee80211_vap_detach(vap); 542 free(ivp, M_80211_VAP); 543} 544 545static void 546iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 547{ 548 if (error != 0) 549 return; 550 551 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 552 553 *(bus_addr_t *)arg = segs[0].ds_addr; 554} 555 556static int 557iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count) 558{ 559 int error; 560 561 ring->count = count; 562 ring->queued = 0; 563 ring->cur = ring->next = 0; 564 565 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 566 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 567 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0, 568 NULL, NULL, &ring->desc_dmat); 569 if (error != 0) { 570 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 571 goto fail; 572 } 573 574 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 575 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 576 if (error != 0) { 577 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 578 goto fail; 579 } 580 581 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 582 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 583 if (error != 0) { 584 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 585 goto fail; 586 } 587 588 return 0; 589 590fail: iwi_free_cmd_ring(sc, ring); 591 return error; 592} 593 594static void 595iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 596{ 597 ring->queued = 0; 598 ring->cur = ring->next = 0; 599} 600 601static void 602iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 603{ 604 if (ring->desc != NULL) { 605 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 606 BUS_DMASYNC_POSTWRITE); 607 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 608 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 609 } 610 611 if (ring->desc_dmat != NULL) 612 bus_dma_tag_destroy(ring->desc_dmat); 613} 614 615static int 616iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count, 617 bus_addr_t csr_ridx, bus_addr_t csr_widx) 618{ 619 int i, error; 620 621 ring->count = count; 622 ring->queued = 0; 623 ring->cur = ring->next = 0; 624 ring->csr_ridx = csr_ridx; 625 ring->csr_widx = csr_widx; 626 627 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 628 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 629 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL, 630 NULL, &ring->desc_dmat); 631 if (error != 0) { 632 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 633 goto fail; 634 } 635 636 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 637 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 638 if (error != 0) { 639 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 640 goto fail; 641 } 642 643 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 644 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 645 if (error != 0) { 646 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 647 goto fail; 648 } 649 650 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 651 M_NOWAIT | M_ZERO); 652 if (ring->data == NULL) { 653 device_printf(sc->sc_dev, "could not allocate soft data\n"); 654 error = ENOMEM; 655 goto fail; 656 } 657 658 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 659 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 660 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 661 if (error != 0) { 662 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 663 goto fail; 664 } 665 666 for (i = 0; i < count; i++) { 667 error = bus_dmamap_create(ring->data_dmat, 0, 668 &ring->data[i].map); 669 if (error != 0) { 670 device_printf(sc->sc_dev, "could not create DMA map\n"); 671 goto fail; 672 } 673 } 674 675 return 0; 676 677fail: iwi_free_tx_ring(sc, ring); 678 return error; 679} 680 681static void 682iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 683{ 684 struct iwi_tx_data *data; 685 int i; 686 687 for (i = 0; i < ring->count; i++) { 688 data = &ring->data[i]; 689 690 if (data->m != NULL) { 691 bus_dmamap_sync(ring->data_dmat, data->map, 692 BUS_DMASYNC_POSTWRITE); 693 bus_dmamap_unload(ring->data_dmat, data->map); 694 m_freem(data->m); 695 data->m = NULL; 696 } 697 698 if (data->ni != NULL) { 699 ieee80211_free_node(data->ni); 700 data->ni = NULL; 701 } 702 } 703 704 ring->queued = 0; 705 ring->cur = ring->next = 0; 706} 707 708static void 709iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 710{ 711 struct iwi_tx_data *data; 712 int i; 713 714 if (ring->desc != NULL) { 715 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 716 BUS_DMASYNC_POSTWRITE); 717 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 718 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 719 } 720 721 if (ring->desc_dmat != NULL) 722 bus_dma_tag_destroy(ring->desc_dmat); 723 724 if (ring->data != NULL) { 725 for (i = 0; i < ring->count; i++) { 726 data = &ring->data[i]; 727 728 if (data->m != NULL) { 729 bus_dmamap_sync(ring->data_dmat, data->map, 730 BUS_DMASYNC_POSTWRITE); 731 bus_dmamap_unload(ring->data_dmat, data->map); 732 m_freem(data->m); 733 } 734 735 if (data->ni != NULL) 736 ieee80211_free_node(data->ni); 737 738 if (data->map != NULL) 739 bus_dmamap_destroy(ring->data_dmat, data->map); 740 } 741 742 free(ring->data, M_DEVBUF); 743 } 744 745 if (ring->data_dmat != NULL) 746 bus_dma_tag_destroy(ring->data_dmat); 747} 748 749static int 750iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 751{ 752 struct iwi_rx_data *data; 753 int i, error; 754 755 ring->count = count; 756 ring->cur = 0; 757 758 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 759 M_NOWAIT | M_ZERO); 760 if (ring->data == NULL) { 761 device_printf(sc->sc_dev, "could not allocate soft data\n"); 762 error = ENOMEM; 763 goto fail; 764 } 765 766 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 767 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 768 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 769 if (error != 0) { 770 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 771 goto fail; 772 } 773 774 for (i = 0; i < count; i++) { 775 data = &ring->data[i]; 776 777 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 778 if (error != 0) { 779 device_printf(sc->sc_dev, "could not create DMA map\n"); 780 goto fail; 781 } 782 783 data->m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 784 if (data->m == NULL) { 785 device_printf(sc->sc_dev, 786 "could not allocate rx mbuf\n"); 787 error = ENOMEM; 788 goto fail; 789 } 790 791 error = bus_dmamap_load(ring->data_dmat, data->map, 792 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 793 &data->physaddr, 0); 794 if (error != 0) { 795 device_printf(sc->sc_dev, 796 "could not load rx buf DMA map"); 797 goto fail; 798 } 799 800 data->reg = IWI_CSR_RX_BASE + i * 4; 801 } 802 803 return 0; 804 805fail: iwi_free_rx_ring(sc, ring); 806 return error; 807} 808 809static void 810iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 811{ 812 ring->cur = 0; 813} 814 815static void 816iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 817{ 818 struct iwi_rx_data *data; 819 int i; 820 821 if (ring->data != NULL) { 822 for (i = 0; i < ring->count; i++) { 823 data = &ring->data[i]; 824 825 if (data->m != NULL) { 826 bus_dmamap_sync(ring->data_dmat, data->map, 827 BUS_DMASYNC_POSTREAD); 828 bus_dmamap_unload(ring->data_dmat, data->map); 829 m_freem(data->m); 830 } 831 832 if (data->map != NULL) 833 bus_dmamap_destroy(ring->data_dmat, data->map); 834 } 835 836 free(ring->data, M_DEVBUF); 837 } 838 839 if (ring->data_dmat != NULL) 840 bus_dma_tag_destroy(ring->data_dmat); 841} 842 843static int 844iwi_shutdown(device_t dev) 845{ 846 struct iwi_softc *sc = device_get_softc(dev); 847 848 iwi_stop(sc); 849 iwi_put_firmware(sc); /* ??? XXX */ 850 851 return 0; 852} 853 854static int 855iwi_suspend(device_t dev) 856{ 857 struct iwi_softc *sc = device_get_softc(dev); 858 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 859 860 ieee80211_suspend_all(ic); 861 return 0; 862} 863 864static int 865iwi_resume(device_t dev) 866{ 867 struct iwi_softc *sc = device_get_softc(dev); 868 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 869 870 pci_write_config(dev, 0x41, 0, 1); 871 872 ieee80211_resume_all(ic); 873 return 0; 874} 875 876static struct ieee80211_node * 877iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 878{ 879 struct iwi_node *in; 880 881 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 882 if (in == NULL) 883 return NULL; 884 /* XXX assign sta table entry for adhoc */ 885 in->in_station = -1; 886 887 return &in->in_node; 888} 889 890static void 891iwi_node_free(struct ieee80211_node *ni) 892{ 893 struct ieee80211com *ic = ni->ni_ic; 894 struct iwi_softc *sc = ic->ic_ifp->if_softc; 895 struct iwi_node *in = (struct iwi_node *)ni; 896 897 if (in->in_station != -1) { 898 DPRINTF(("%s mac %6D station %u\n", __func__, 899 ni->ni_macaddr, ":", in->in_station)); 900 free_unr(sc->sc_unr, in->in_station); 901 } 902 903 sc->sc_node_free(ni); 904} 905 906/* 907 * Convert h/w rate code to IEEE rate code. 908 */ 909static int 910iwi_cvtrate(int iwirate) 911{ 912 switch (iwirate) { 913 case IWI_RATE_DS1: return 2; 914 case IWI_RATE_DS2: return 4; 915 case IWI_RATE_DS5: return 11; 916 case IWI_RATE_DS11: return 22; 917 case IWI_RATE_OFDM6: return 12; 918 case IWI_RATE_OFDM9: return 18; 919 case IWI_RATE_OFDM12: return 24; 920 case IWI_RATE_OFDM18: return 36; 921 case IWI_RATE_OFDM24: return 48; 922 case IWI_RATE_OFDM36: return 72; 923 case IWI_RATE_OFDM48: return 96; 924 case IWI_RATE_OFDM54: return 108; 925 } 926 return 0; 927} 928 929/* 930 * The firmware automatically adapts the transmit speed. We report its current 931 * value here. 932 */ 933static void 934iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 935{ 936 struct ieee80211vap *vap = ifp->if_softc; 937 struct ieee80211com *ic = vap->iv_ic; 938 struct iwi_softc *sc = ic->ic_ifp->if_softc; 939 940 /* read current transmission rate from adapter */ 941 vap->iv_bss->ni_txrate = 942 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 943 ieee80211_media_status(ifp, imr); 944} 945 946static int 947iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 948{ 949 struct iwi_vap *ivp = IWI_VAP(vap); 950 struct ieee80211com *ic = vap->iv_ic; 951 struct ifnet *ifp = ic->ic_ifp; 952 struct iwi_softc *sc = ifp->if_softc; 953 IWI_LOCK_DECL; 954 955 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 956 ieee80211_state_name[vap->iv_state], 957 ieee80211_state_name[nstate], sc->flags)); 958 959 IEEE80211_UNLOCK(ic); 960 IWI_LOCK(sc); 961 switch (nstate) { 962 case IEEE80211_S_INIT: 963 /* 964 * NB: don't try to do this if iwi_stop_master has 965 * shutdown the firmware and disabled interrupts. 966 */ 967 if (vap->iv_state == IEEE80211_S_RUN && 968 (sc->flags & IWI_FLAG_FW_INITED)) 969 iwi_disassociate(sc, 0); 970 break; 971 case IEEE80211_S_AUTH: 972 iwi_auth_and_assoc(sc, vap); 973 break; 974 case IEEE80211_S_RUN: 975 if (vap->iv_opmode == IEEE80211_M_IBSS && 976 vap->iv_state == IEEE80211_S_SCAN) { 977 /* 978 * XXX when joining an ibss network we are called 979 * with a SCAN -> RUN transition on scan complete. 980 * Use that to call iwi_auth_and_assoc. On completing 981 * the join we are then called again with an 982 * AUTH -> RUN transition and we want to do nothing. 983 * This is all totally bogus and needs to be redone. 984 */ 985 iwi_auth_and_assoc(sc, vap); 986 } else if (vap->iv_opmode == IEEE80211_M_MONITOR) 987 ieee80211_runtask(ic, &sc->sc_monitortask); 988 break; 989 case IEEE80211_S_ASSOC: 990 /* 991 * If we are transitioning from AUTH then just wait 992 * for the ASSOC status to come back from the firmware. 993 * Otherwise we need to issue the association request. 994 */ 995 if (vap->iv_state == IEEE80211_S_AUTH) 996 break; 997 iwi_auth_and_assoc(sc, vap); 998 break; 999 default: 1000 break; 1001 } 1002 IWI_UNLOCK(sc); 1003 IEEE80211_LOCK(ic); 1004 return ivp->iwi_newstate(vap, nstate, arg); 1005} 1006 1007/* 1008 * WME parameters coming from IEEE 802.11e specification. These values are 1009 * already declared in ieee80211_proto.c, but they are static so they can't 1010 * be reused here. 1011 */ 1012static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 1013 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */ 1014 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */ 1015 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */ 1016 { 0, 2, 3, 4, 102 } /* WME_AC_VO */ 1017}; 1018 1019static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 1020 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */ 1021 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */ 1022 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */ 1023 { 0, 2, 2, 3, 47 } /* WME_AC_VO */ 1024}; 1025#define IWI_EXP2(v) htole16((1 << (v)) - 1) 1026#define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 1027 1028static void 1029iwi_wme_init(struct iwi_softc *sc) 1030{ 1031 const struct wmeParams *wmep; 1032 int ac; 1033 1034 memset(sc->wme, 0, sizeof sc->wme); 1035 for (ac = 0; ac < WME_NUM_AC; ac++) { 1036 /* set WME values for CCK modulation */ 1037 wmep = &iwi_wme_cck_params[ac]; 1038 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn; 1039 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1040 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1041 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1042 sc->wme[1].acm[ac] = wmep->wmep_acm; 1043 1044 /* set WME values for OFDM modulation */ 1045 wmep = &iwi_wme_ofdm_params[ac]; 1046 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn; 1047 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1048 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1049 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1050 sc->wme[2].acm[ac] = wmep->wmep_acm; 1051 } 1052} 1053 1054static int 1055iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic) 1056{ 1057 const struct wmeParams *wmep; 1058 int ac; 1059 1060 for (ac = 0; ac < WME_NUM_AC; ac++) { 1061 /* set WME values for current operating mode */ 1062 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1063 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn; 1064 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1065 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1066 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1067 sc->wme[0].acm[ac] = wmep->wmep_acm; 1068 } 1069 1070 DPRINTF(("Setting WME parameters\n")); 1071 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme); 1072} 1073#undef IWI_USEC 1074#undef IWI_EXP2 1075 1076static void 1077iwi_update_wme(void *arg, int npending) 1078{ 1079 struct ieee80211com *ic = arg; 1080 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1081 IWI_LOCK_DECL; 1082 1083 IWI_LOCK(sc); 1084 (void) iwi_wme_setparams(sc, ic); 1085 IWI_UNLOCK(sc); 1086} 1087 1088static int 1089iwi_wme_update(struct ieee80211com *ic) 1090{ 1091 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1092 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1093 1094 /* 1095 * We may be called to update the WME parameters in 1096 * the adapter at various places. If we're already 1097 * associated then initiate the request immediately; 1098 * otherwise we assume the params will get sent down 1099 * to the adapter as part of the work iwi_auth_and_assoc 1100 * does. 1101 */ 1102 if (vap->iv_state == IEEE80211_S_RUN) 1103 ieee80211_runtask(ic, &sc->sc_wmetask); 1104 return (0); 1105} 1106 1107static int 1108iwi_wme_setie(struct iwi_softc *sc) 1109{ 1110 struct ieee80211_wme_info wme; 1111 1112 memset(&wme, 0, sizeof wme); 1113 wme.wme_id = IEEE80211_ELEMID_VENDOR; 1114 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 1115 wme.wme_oui[0] = 0x00; 1116 wme.wme_oui[1] = 0x50; 1117 wme.wme_oui[2] = 0xf2; 1118 wme.wme_type = WME_OUI_TYPE; 1119 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 1120 wme.wme_version = WME_VERSION; 1121 wme.wme_info = 0; 1122 1123 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 1124 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme); 1125} 1126 1127/* 1128 * Read 16 bits at address 'addr' from the serial EEPROM. 1129 */ 1130static uint16_t 1131iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1132{ 1133 uint32_t tmp; 1134 uint16_t val; 1135 int n; 1136 1137 /* clock C once before the first command */ 1138 IWI_EEPROM_CTL(sc, 0); 1139 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1140 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1141 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1142 1143 /* write start bit (1) */ 1144 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1145 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1146 1147 /* write READ opcode (10) */ 1148 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1149 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1150 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1151 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1152 1153 /* write address A7-A0 */ 1154 for (n = 7; n >= 0; n--) { 1155 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1156 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1157 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1158 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1159 } 1160 1161 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1162 1163 /* read data Q15-Q0 */ 1164 val = 0; 1165 for (n = 15; n >= 0; n--) { 1166 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1167 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1168 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1169 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1170 } 1171 1172 IWI_EEPROM_CTL(sc, 0); 1173 1174 /* clear Chip Select and clock C */ 1175 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1176 IWI_EEPROM_CTL(sc, 0); 1177 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1178 1179 return val; 1180} 1181 1182static void 1183iwi_setcurchan(struct iwi_softc *sc, int chan) 1184{ 1185 struct ifnet *ifp = sc->sc_ifp; 1186 struct ieee80211com *ic = ifp->if_l2com; 1187 1188 sc->curchan = chan; 1189 ieee80211_radiotap_chan_change(ic); 1190} 1191 1192static void 1193iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1194 struct iwi_frame *frame) 1195{ 1196 struct ifnet *ifp = sc->sc_ifp; 1197 struct ieee80211com *ic = ifp->if_l2com; 1198 struct mbuf *mnew, *m; 1199 struct ieee80211_node *ni; 1200 int type, error, framelen; 1201 int8_t rssi, nf; 1202 IWI_LOCK_DECL; 1203 1204 framelen = le16toh(frame->len); 1205 if (framelen < IEEE80211_MIN_LEN || framelen > MCLBYTES) { 1206 /* 1207 * XXX >MCLBYTES is bogus as it means the h/w dma'd 1208 * out of bounds; need to figure out how to limit 1209 * frame size in the firmware 1210 */ 1211 /* XXX stat */ 1212 DPRINTFN(1, 1213 ("drop rx frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1214 le16toh(frame->len), frame->chan, frame->rssi, 1215 frame->rssi_dbm)); 1216 return; 1217 } 1218 1219 DPRINTFN(5, ("received frame len=%u chan=%u rssi=%u rssi_dbm=%u\n", 1220 le16toh(frame->len), frame->chan, frame->rssi, frame->rssi_dbm)); 1221 1222 if (frame->chan != sc->curchan) 1223 iwi_setcurchan(sc, frame->chan); 1224 1225 /* 1226 * Try to allocate a new mbuf for this ring element and load it before 1227 * processing the current mbuf. If the ring element cannot be loaded, 1228 * drop the received packet and reuse the old mbuf. In the unlikely 1229 * case that the old mbuf can't be reloaded either, explicitly panic. 1230 */ 1231 mnew = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1232 if (mnew == NULL) { 1233 ifp->if_ierrors++; 1234 return; 1235 } 1236 1237 bus_dmamap_unload(sc->rxq.data_dmat, data->map); 1238 1239 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1240 mtod(mnew, void *), MCLBYTES, iwi_dma_map_addr, &data->physaddr, 1241 0); 1242 if (error != 0) { 1243 m_freem(mnew); 1244 1245 /* try to reload the old mbuf */ 1246 error = bus_dmamap_load(sc->rxq.data_dmat, data->map, 1247 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 1248 &data->physaddr, 0); 1249 if (error != 0) { 1250 /* very unlikely that it will fail... */ 1251 panic("%s: could not load old rx mbuf", 1252 device_get_name(sc->sc_dev)); 1253 } 1254 ifp->if_ierrors++; 1255 return; 1256 } 1257 1258 /* 1259 * New mbuf successfully loaded, update Rx ring and continue 1260 * processing. 1261 */ 1262 m = data->m; 1263 data->m = mnew; 1264 CSR_WRITE_4(sc, data->reg, data->physaddr); 1265 1266 /* finalize mbuf */ 1267 m->m_pkthdr.rcvif = ifp; 1268 m->m_pkthdr.len = m->m_len = sizeof (struct iwi_hdr) + 1269 sizeof (struct iwi_frame) + framelen; 1270 1271 m_adj(m, sizeof (struct iwi_hdr) + sizeof (struct iwi_frame)); 1272 1273 rssi = frame->rssi_dbm; 1274 nf = -95; 1275 if (ieee80211_radiotap_active(ic)) { 1276 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1277 1278 tap->wr_flags = 0; 1279 tap->wr_antsignal = rssi; 1280 tap->wr_antnoise = nf; 1281 tap->wr_rate = iwi_cvtrate(frame->rate); 1282 tap->wr_antenna = frame->antenna; 1283 } 1284 IWI_UNLOCK(sc); 1285 1286 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1287 if (ni != NULL) { 1288 type = ieee80211_input(ni, m, rssi, nf); 1289 ieee80211_free_node(ni); 1290 } else 1291 type = ieee80211_input_all(ic, m, rssi, nf); 1292 1293 IWI_LOCK(sc); 1294 if (sc->sc_softled) { 1295 /* 1296 * Blink for any data frame. Otherwise do a 1297 * heartbeat-style blink when idle. The latter 1298 * is mainly for station mode where we depend on 1299 * periodic beacon frames to trigger the poll event. 1300 */ 1301 if (type == IEEE80211_FC0_TYPE_DATA) { 1302 sc->sc_rxrate = frame->rate; 1303 iwi_led_event(sc, IWI_LED_RX); 1304 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle) 1305 iwi_led_event(sc, IWI_LED_POLL); 1306 } 1307} 1308 1309/* 1310 * Check for an association response frame to see if QoS 1311 * has been negotiated. We parse just enough to figure 1312 * out if we're supposed to use QoS. The proper solution 1313 * is to pass the frame up so ieee80211_input can do the 1314 * work but that's made hard by how things currently are 1315 * done in the driver. 1316 */ 1317static void 1318iwi_checkforqos(struct ieee80211vap *vap, 1319 const struct ieee80211_frame *wh, int len) 1320{ 1321#define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 1322 const uint8_t *frm, *efrm, *wme; 1323 struct ieee80211_node *ni; 1324 uint16_t capinfo, status, associd; 1325 1326 /* NB: +8 for capinfo, status, associd, and first ie */ 1327 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) || 1328 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP) 1329 return; 1330 /* 1331 * asresp frame format 1332 * [2] capability information 1333 * [2] status 1334 * [2] association ID 1335 * [tlv] supported rates 1336 * [tlv] extended supported rates 1337 * [tlv] WME 1338 */ 1339 frm = (const uint8_t *)&wh[1]; 1340 efrm = ((const uint8_t *) wh) + len; 1341 1342 capinfo = le16toh(*(const uint16_t *)frm); 1343 frm += 2; 1344 status = le16toh(*(const uint16_t *)frm); 1345 frm += 2; 1346 associd = le16toh(*(const uint16_t *)frm); 1347 frm += 2; 1348 1349 wme = NULL; 1350 while (efrm - frm > 1) { 1351 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1] + 2, return); 1352 switch (*frm) { 1353 case IEEE80211_ELEMID_VENDOR: 1354 if (iswmeoui(frm)) 1355 wme = frm; 1356 break; 1357 } 1358 frm += frm[1] + 2; 1359 } 1360 1361 ni = vap->iv_bss; 1362 ni->ni_capinfo = capinfo; 1363 ni->ni_associd = associd & 0x3fff; 1364 if (wme != NULL) 1365 ni->ni_flags |= IEEE80211_NODE_QOS; 1366 else 1367 ni->ni_flags &= ~IEEE80211_NODE_QOS; 1368#undef SUBTYPE 1369} 1370 1371/* 1372 * Task queue callbacks for iwi_notification_intr used to avoid LOR's. 1373 */ 1374 1375static void 1376iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1377{ 1378 struct ifnet *ifp = sc->sc_ifp; 1379 struct ieee80211com *ic = ifp->if_l2com; 1380 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1381 struct iwi_notif_scan_channel *chan; 1382 struct iwi_notif_scan_complete *scan; 1383 struct iwi_notif_authentication *auth; 1384 struct iwi_notif_association *assoc; 1385 struct iwi_notif_beacon_state *beacon; 1386 1387 switch (notif->type) { 1388 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1389 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1390 1391 DPRINTFN(3, ("Scan of channel %u complete (%u)\n", 1392 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan)); 1393 1394 /* Reset the timer, the scan is still going */ 1395 sc->sc_state_timer = 3; 1396 break; 1397 1398 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1399 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1400 1401 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1402 scan->status)); 1403 1404 IWI_STATE_END(sc, IWI_FW_SCANNING); 1405 1406 /* 1407 * Monitor mode works by doing a passive scan to set 1408 * the channel and enable rx. Because we don't want 1409 * to abort a scan lest the firmware crash we scan 1410 * for a short period of time and automatically restart 1411 * the scan when notified the sweep has completed. 1412 */ 1413 if (vap->iv_opmode == IEEE80211_M_MONITOR) { 1414 ieee80211_runtask(ic, &sc->sc_monitortask); 1415 break; 1416 } 1417 1418 if (scan->status == IWI_SCAN_COMPLETED) { 1419 /* NB: don't need to defer, net80211 does it for us */ 1420 ieee80211_scan_next(vap); 1421 } 1422 break; 1423 1424 case IWI_NOTIF_TYPE_AUTHENTICATION: 1425 auth = (struct iwi_notif_authentication *)(notif + 1); 1426 switch (auth->state) { 1427 case IWI_AUTH_SUCCESS: 1428 DPRINTFN(2, ("Authentication succeeeded\n")); 1429 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1); 1430 break; 1431 case IWI_AUTH_FAIL: 1432 /* 1433 * These are delivered as an unsolicited deauth 1434 * (e.g. due to inactivity) or in response to an 1435 * associate request. 1436 */ 1437 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1438 if (vap->iv_state != IEEE80211_S_RUN) { 1439 DPRINTFN(2, ("Authentication failed\n")); 1440 vap->iv_stats.is_rx_auth_fail++; 1441 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1442 } else { 1443 DPRINTFN(2, ("Deauthenticated\n")); 1444 vap->iv_stats.is_rx_deauth++; 1445 } 1446 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1447 break; 1448 case IWI_AUTH_SENT_1: 1449 case IWI_AUTH_RECV_2: 1450 case IWI_AUTH_SEQ1_PASS: 1451 break; 1452 case IWI_AUTH_SEQ1_FAIL: 1453 DPRINTFN(2, ("Initial authentication handshake failed; " 1454 "you probably need shared key\n")); 1455 vap->iv_stats.is_rx_auth_fail++; 1456 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1457 /* XXX retry shared key when in auto */ 1458 break; 1459 default: 1460 device_printf(sc->sc_dev, 1461 "unknown authentication state %u\n", auth->state); 1462 break; 1463 } 1464 break; 1465 1466 case IWI_NOTIF_TYPE_ASSOCIATION: 1467 assoc = (struct iwi_notif_association *)(notif + 1); 1468 switch (assoc->state) { 1469 case IWI_AUTH_SUCCESS: 1470 /* re-association, do nothing */ 1471 break; 1472 case IWI_ASSOC_SUCCESS: 1473 DPRINTFN(2, ("Association succeeded\n")); 1474 sc->flags |= IWI_FLAG_ASSOCIATED; 1475 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1476 iwi_checkforqos(vap, 1477 (const struct ieee80211_frame *)(assoc+1), 1478 le16toh(notif->len) - sizeof(*assoc) - 1); 1479 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1480 break; 1481 case IWI_ASSOC_INIT: 1482 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1483 switch (sc->fw_state) { 1484 case IWI_FW_ASSOCIATING: 1485 DPRINTFN(2, ("Association failed\n")); 1486 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1487 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1488 break; 1489 1490 case IWI_FW_DISASSOCIATING: 1491 DPRINTFN(2, ("Dissassociated\n")); 1492 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING); 1493 vap->iv_stats.is_rx_disassoc++; 1494 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1495 break; 1496 } 1497 break; 1498 default: 1499 device_printf(sc->sc_dev, 1500 "unknown association state %u\n", assoc->state); 1501 break; 1502 } 1503 break; 1504 1505 case IWI_NOTIF_TYPE_BEACON: 1506 /* XXX check struct length */ 1507 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1508 1509 DPRINTFN(5, ("Beacon state (%u, %u)\n", 1510 beacon->state, le32toh(beacon->number))); 1511 1512 if (beacon->state == IWI_BEACON_MISS) { 1513 /* 1514 * The firmware notifies us of every beacon miss 1515 * so we need to track the count against the 1516 * configured threshold before notifying the 1517 * 802.11 layer. 1518 * XXX try to roam, drop assoc only on much higher count 1519 */ 1520 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) { 1521 DPRINTF(("Beacon miss: %u >= %u\n", 1522 le32toh(beacon->number), 1523 vap->iv_bmissthreshold)); 1524 vap->iv_stats.is_beacon_miss++; 1525 /* 1526 * It's pointless to notify the 802.11 layer 1527 * as it'll try to send a probe request (which 1528 * we'll discard) and then timeout and drop us 1529 * into scan state. Instead tell the firmware 1530 * to disassociate and then on completion we'll 1531 * kick the state machine to scan. 1532 */ 1533 ieee80211_runtask(ic, &sc->sc_disassoctask); 1534 } 1535 } 1536 break; 1537 1538 case IWI_NOTIF_TYPE_CALIBRATION: 1539 case IWI_NOTIF_TYPE_NOISE: 1540 case IWI_NOTIF_TYPE_LINK_QUALITY: 1541 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1542 break; 1543 1544 default: 1545 DPRINTF(("unknown notification type %u flags 0x%x len %u\n", 1546 notif->type, notif->flags, le16toh(notif->len))); 1547 break; 1548 } 1549} 1550 1551static void 1552iwi_rx_intr(struct iwi_softc *sc) 1553{ 1554 struct iwi_rx_data *data; 1555 struct iwi_hdr *hdr; 1556 uint32_t hw; 1557 1558 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1559 1560 for (; sc->rxq.cur != hw;) { 1561 data = &sc->rxq.data[sc->rxq.cur]; 1562 1563 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1564 BUS_DMASYNC_POSTREAD); 1565 1566 hdr = mtod(data->m, struct iwi_hdr *); 1567 1568 switch (hdr->type) { 1569 case IWI_HDR_TYPE_FRAME: 1570 iwi_frame_intr(sc, data, sc->rxq.cur, 1571 (struct iwi_frame *)(hdr + 1)); 1572 break; 1573 1574 case IWI_HDR_TYPE_NOTIF: 1575 iwi_notification_intr(sc, 1576 (struct iwi_notif *)(hdr + 1)); 1577 break; 1578 1579 default: 1580 device_printf(sc->sc_dev, "unknown hdr type %u\n", 1581 hdr->type); 1582 } 1583 1584 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1585 1586 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1587 } 1588 1589 /* tell the firmware what we have processed */ 1590 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1591 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1592} 1593 1594static void 1595iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1596{ 1597 struct ifnet *ifp = sc->sc_ifp; 1598 struct iwi_tx_data *data; 1599 uint32_t hw; 1600 1601 hw = CSR_READ_4(sc, txq->csr_ridx); 1602 1603 for (; txq->next != hw;) { 1604 data = &txq->data[txq->next]; 1605 1606 bus_dmamap_sync(txq->data_dmat, data->map, 1607 BUS_DMASYNC_POSTWRITE); 1608 bus_dmamap_unload(txq->data_dmat, data->map); 1609 if (data->m->m_flags & M_TXCB) 1610 ieee80211_process_callback(data->ni, data->m, 0/*XXX*/); 1611 m_freem(data->m); 1612 data->m = NULL; 1613 ieee80211_free_node(data->ni); 1614 data->ni = NULL; 1615 1616 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1617 1618 ifp->if_opackets++; 1619 1620 txq->queued--; 1621 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1622 } 1623 1624 sc->sc_tx_timer = 0; 1625 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1626 1627 if (sc->sc_softled) 1628 iwi_led_event(sc, IWI_LED_TX); 1629 1630 iwi_start_locked(ifp); 1631} 1632 1633static void 1634iwi_fatal_error_intr(struct iwi_softc *sc) 1635{ 1636 struct ifnet *ifp = sc->sc_ifp; 1637 struct ieee80211com *ic = ifp->if_l2com; 1638 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1639 1640 device_printf(sc->sc_dev, "firmware error\n"); 1641 if (vap != NULL) 1642 ieee80211_cancel_scan(vap); 1643 ieee80211_runtask(ic, &sc->sc_restarttask); 1644 1645 sc->flags &= ~IWI_FLAG_BUSY; 1646 sc->sc_busy_timer = 0; 1647 wakeup(sc); 1648} 1649 1650static void 1651iwi_radio_off_intr(struct iwi_softc *sc) 1652{ 1653 struct ifnet *ifp = sc->sc_ifp; 1654 struct ieee80211com *ic = ifp->if_l2com; 1655 1656 ieee80211_runtask(ic, &sc->sc_radiofftask); 1657} 1658 1659static void 1660iwi_intr(void *arg) 1661{ 1662 struct iwi_softc *sc = arg; 1663 uint32_t r; 1664 IWI_LOCK_DECL; 1665 1666 IWI_LOCK(sc); 1667 1668 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) { 1669 IWI_UNLOCK(sc); 1670 return; 1671 } 1672 1673 /* acknowledge interrupts */ 1674 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1675 1676 if (r & IWI_INTR_FATAL_ERROR) { 1677 iwi_fatal_error_intr(sc); 1678 goto done; 1679 } 1680 1681 if (r & IWI_INTR_FW_INITED) { 1682 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1683 wakeup(sc); 1684 } 1685 1686 if (r & IWI_INTR_RADIO_OFF) 1687 iwi_radio_off_intr(sc); 1688 1689 if (r & IWI_INTR_CMD_DONE) { 1690 sc->flags &= ~IWI_FLAG_BUSY; 1691 sc->sc_busy_timer = 0; 1692 wakeup(sc); 1693 } 1694 1695 if (r & IWI_INTR_TX1_DONE) 1696 iwi_tx_intr(sc, &sc->txq[0]); 1697 1698 if (r & IWI_INTR_TX2_DONE) 1699 iwi_tx_intr(sc, &sc->txq[1]); 1700 1701 if (r & IWI_INTR_TX3_DONE) 1702 iwi_tx_intr(sc, &sc->txq[2]); 1703 1704 if (r & IWI_INTR_TX4_DONE) 1705 iwi_tx_intr(sc, &sc->txq[3]); 1706 1707 if (r & IWI_INTR_RX_DONE) 1708 iwi_rx_intr(sc); 1709 1710 if (r & IWI_INTR_PARITY_ERROR) { 1711 /* XXX rate-limit */ 1712 device_printf(sc->sc_dev, "parity error\n"); 1713 } 1714done: 1715 IWI_UNLOCK(sc); 1716} 1717 1718static int 1719iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len) 1720{ 1721 struct iwi_cmd_desc *desc; 1722 1723 IWI_LOCK_ASSERT(sc); 1724 1725 if (sc->flags & IWI_FLAG_BUSY) { 1726 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 1727 __func__, type); 1728 return EAGAIN; 1729 } 1730 sc->flags |= IWI_FLAG_BUSY; 1731 sc->sc_busy_timer = 2; 1732 1733 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1734 1735 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1736 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1737 desc->type = type; 1738 desc->len = len; 1739 memcpy(desc->data, data, len); 1740 1741 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map, 1742 BUS_DMASYNC_PREWRITE); 1743 1744 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1745 type, len)); 1746 1747 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1748 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1749 1750 return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz); 1751} 1752 1753static void 1754iwi_write_ibssnode(struct iwi_softc *sc, 1755 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry) 1756{ 1757 struct iwi_ibssnode node; 1758 1759 /* write node information into NIC memory */ 1760 memset(&node, 0, sizeof node); 1761 IEEE80211_ADDR_COPY(node.bssid, addr); 1762 1763 DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry)); 1764 1765 CSR_WRITE_REGION_1(sc, 1766 IWI_CSR_NODE_BASE + entry * sizeof node, 1767 (uint8_t *)&node, sizeof node); 1768} 1769 1770static int 1771iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1772 int ac) 1773{ 1774 struct iwi_softc *sc = ifp->if_softc; 1775 struct ieee80211vap *vap = ni->ni_vap; 1776 struct ieee80211com *ic = ni->ni_ic; 1777 struct iwi_node *in = (struct iwi_node *)ni; 1778 const struct ieee80211_frame *wh; 1779 struct ieee80211_key *k; 1780 const struct chanAccParams *cap; 1781 struct iwi_tx_ring *txq = &sc->txq[ac]; 1782 struct iwi_tx_data *data; 1783 struct iwi_tx_desc *desc; 1784 struct mbuf *mnew; 1785 bus_dma_segment_t segs[IWI_MAX_NSEG]; 1786 int error, nsegs, hdrlen, i; 1787 int ismcast, flags, xflags, staid; 1788 1789 IWI_LOCK_ASSERT(sc); 1790 wh = mtod(m0, const struct ieee80211_frame *); 1791 /* NB: only data frames use this path */ 1792 hdrlen = ieee80211_hdrsize(wh); 1793 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1794 flags = xflags = 0; 1795 1796 if (!ismcast) 1797 flags |= IWI_DATA_FLAG_NEED_ACK; 1798 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE) 1799 flags |= IWI_DATA_FLAG_SHPREAMBLE; 1800 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1801 xflags |= IWI_DATA_XFLAG_QOS; 1802 cap = &ic->ic_wme.wme_chanParams; 1803 if (!cap->cap_wmeParams[ac].wmep_noackPolicy) 1804 flags &= ~IWI_DATA_FLAG_NEED_ACK; 1805 } 1806 1807 /* 1808 * This is only used in IBSS mode where the firmware expect an index 1809 * in a h/w table instead of a destination address. 1810 */ 1811 if (vap->iv_opmode == IEEE80211_M_IBSS) { 1812 if (!ismcast) { 1813 if (in->in_station == -1) { 1814 in->in_station = alloc_unr(sc->sc_unr); 1815 if (in->in_station == -1) { 1816 /* h/w table is full */ 1817 m_freem(m0); 1818 ieee80211_free_node(ni); 1819 ifp->if_oerrors++; 1820 return 0; 1821 } 1822 iwi_write_ibssnode(sc, 1823 ni->ni_macaddr, in->in_station); 1824 } 1825 staid = in->in_station; 1826 } else { 1827 /* 1828 * Multicast addresses have no associated node 1829 * so there will be no station entry. We reserve 1830 * entry 0 for one mcast address and use that. 1831 * If there are many being used this will be 1832 * expensive and we'll need to do a better job 1833 * but for now this handles the broadcast case. 1834 */ 1835 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) { 1836 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1); 1837 iwi_write_ibssnode(sc, sc->sc_mcast, 0); 1838 } 1839 staid = 0; 1840 } 1841 } else 1842 staid = 0; 1843 1844 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1845 k = ieee80211_crypto_encap(ni, m0); 1846 if (k == NULL) { 1847 m_freem(m0); 1848 return ENOBUFS; 1849 } 1850 1851 /* packet header may have moved, reset our local pointer */ 1852 wh = mtod(m0, struct ieee80211_frame *); 1853 } 1854 1855 if (ieee80211_radiotap_active_vap(vap)) { 1856 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1857 1858 tap->wt_flags = 0; 1859 1860 ieee80211_radiotap_tx(vap, m0); 1861 } 1862 1863 data = &txq->data[txq->cur]; 1864 desc = &txq->desc[txq->cur]; 1865 1866 /* save and trim IEEE802.11 header */ 1867 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh); 1868 m_adj(m0, hdrlen); 1869 1870 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs, 1871 &nsegs, 0); 1872 if (error != 0 && error != EFBIG) { 1873 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1874 error); 1875 m_freem(m0); 1876 return error; 1877 } 1878 if (error != 0) { 1879 mnew = m_defrag(m0, M_NOWAIT); 1880 if (mnew == NULL) { 1881 device_printf(sc->sc_dev, 1882 "could not defragment mbuf\n"); 1883 m_freem(m0); 1884 return ENOBUFS; 1885 } 1886 m0 = mnew; 1887 1888 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, 1889 m0, segs, &nsegs, 0); 1890 if (error != 0) { 1891 device_printf(sc->sc_dev, 1892 "could not map mbuf (error %d)\n", error); 1893 m_freem(m0); 1894 return error; 1895 } 1896 } 1897 1898 data->m = m0; 1899 data->ni = ni; 1900 1901 desc->hdr.type = IWI_HDR_TYPE_DATA; 1902 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1903 desc->station = staid; 1904 desc->cmd = IWI_DATA_CMD_TX; 1905 desc->len = htole16(m0->m_pkthdr.len); 1906 desc->flags = flags; 1907 desc->xflags = xflags; 1908 1909#if 0 1910 if (vap->iv_flags & IEEE80211_F_PRIVACY) 1911 desc->wep_txkey = vap->iv_def_txkey; 1912 else 1913#endif 1914 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1915 1916 desc->nseg = htole32(nsegs); 1917 for (i = 0; i < nsegs; i++) { 1918 desc->seg_addr[i] = htole32(segs[i].ds_addr); 1919 desc->seg_len[i] = htole16(segs[i].ds_len); 1920 } 1921 1922 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1923 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1924 1925 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1926 ac, txq->cur, le16toh(desc->len), nsegs)); 1927 1928 txq->queued++; 1929 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1930 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1931 1932 return 0; 1933} 1934 1935static int 1936iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1937 const struct ieee80211_bpf_params *params) 1938{ 1939 /* no support; just discard */ 1940 m_freem(m); 1941 ieee80211_free_node(ni); 1942 return 0; 1943} 1944 1945static void 1946iwi_start_locked(struct ifnet *ifp) 1947{ 1948 struct iwi_softc *sc = ifp->if_softc; 1949 struct mbuf *m; 1950 struct ieee80211_node *ni; 1951 int ac; 1952 1953 IWI_LOCK_ASSERT(sc); 1954 1955 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1956 return; 1957 1958 for (;;) { 1959 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1960 if (m == NULL) 1961 break; 1962 ac = M_WME_GETAC(m); 1963 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) { 1964 /* there is no place left in this ring; tail drop */ 1965 /* XXX tail drop */ 1966 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1967 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1968 break; 1969 } 1970 1971 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1972 if (iwi_tx_start(ifp, m, ni, ac) != 0) { 1973 ieee80211_free_node(ni); 1974 ifp->if_oerrors++; 1975 break; 1976 } 1977 1978 sc->sc_tx_timer = 5; 1979 } 1980} 1981 1982static void 1983iwi_start(struct ifnet *ifp) 1984{ 1985 struct iwi_softc *sc = ifp->if_softc; 1986 IWI_LOCK_DECL; 1987 1988 IWI_LOCK(sc); 1989 iwi_start_locked(ifp); 1990 IWI_UNLOCK(sc); 1991} 1992 1993static void 1994iwi_watchdog(void *arg) 1995{ 1996 struct iwi_softc *sc = arg; 1997 struct ifnet *ifp = sc->sc_ifp; 1998 struct ieee80211com *ic = ifp->if_l2com; 1999 2000 IWI_LOCK_ASSERT(sc); 2001 2002 if (sc->sc_tx_timer > 0) { 2003 if (--sc->sc_tx_timer == 0) { 2004 if_printf(ifp, "device timeout\n"); 2005 ifp->if_oerrors++; 2006 ieee80211_runtask(ic, &sc->sc_restarttask); 2007 } 2008 } 2009 if (sc->sc_state_timer > 0) { 2010 if (--sc->sc_state_timer == 0) { 2011 if_printf(ifp, "firmware stuck in state %d, resetting\n", 2012 sc->fw_state); 2013 if (sc->fw_state == IWI_FW_SCANNING) { 2014 struct ieee80211com *ic = ifp->if_l2com; 2015 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps)); 2016 } 2017 ieee80211_runtask(ic, &sc->sc_restarttask); 2018 sc->sc_state_timer = 3; 2019 } 2020 } 2021 if (sc->sc_busy_timer > 0) { 2022 if (--sc->sc_busy_timer == 0) { 2023 if_printf(ifp, "firmware command timeout, resetting\n"); 2024 ieee80211_runtask(ic, &sc->sc_restarttask); 2025 } 2026 } 2027 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc); 2028} 2029 2030static int 2031iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2032{ 2033 struct iwi_softc *sc = ifp->if_softc; 2034 struct ieee80211com *ic = ifp->if_l2com; 2035 struct ifreq *ifr = (struct ifreq *) data; 2036 int error = 0, startall = 0; 2037 IWI_LOCK_DECL; 2038 2039 switch (cmd) { 2040 case SIOCSIFFLAGS: 2041 IWI_LOCK(sc); 2042 if (ifp->if_flags & IFF_UP) { 2043 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2044 iwi_init_locked(sc); 2045 startall = 1; 2046 } 2047 } else { 2048 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2049 iwi_stop_locked(sc); 2050 } 2051 IWI_UNLOCK(sc); 2052 if (startall) 2053 ieee80211_start_all(ic); 2054 break; 2055 case SIOCGIFMEDIA: 2056 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2057 break; 2058 case SIOCGIFADDR: 2059 error = ether_ioctl(ifp, cmd, data); 2060 break; 2061 default: 2062 error = EINVAL; 2063 break; 2064 } 2065 return error; 2066} 2067 2068static void 2069iwi_stop_master(struct iwi_softc *sc) 2070{ 2071 uint32_t tmp; 2072 int ntries; 2073 2074 /* disable interrupts */ 2075 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 2076 2077 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 2078 for (ntries = 0; ntries < 5; ntries++) { 2079 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2080 break; 2081 DELAY(10); 2082 } 2083 if (ntries == 5) 2084 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2085 2086 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2087 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 2088 2089 sc->flags &= ~IWI_FLAG_FW_INITED; 2090} 2091 2092static int 2093iwi_reset(struct iwi_softc *sc) 2094{ 2095 uint32_t tmp; 2096 int i, ntries; 2097 2098 iwi_stop_master(sc); 2099 2100 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2101 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2102 2103 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 2104 2105 /* wait for clock stabilization */ 2106 for (ntries = 0; ntries < 1000; ntries++) { 2107 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 2108 break; 2109 DELAY(200); 2110 } 2111 if (ntries == 1000) { 2112 device_printf(sc->sc_dev, 2113 "timeout waiting for clock stabilization\n"); 2114 return EIO; 2115 } 2116 2117 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2118 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET); 2119 2120 DELAY(10); 2121 2122 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2123 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2124 2125 /* clear NIC memory */ 2126 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 2127 for (i = 0; i < 0xc000; i++) 2128 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2129 2130 return 0; 2131} 2132 2133static const struct iwi_firmware_ohdr * 2134iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw) 2135{ 2136 const struct firmware *fp = fw->fp; 2137 const struct iwi_firmware_ohdr *hdr; 2138 2139 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) { 2140 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name); 2141 return NULL; 2142 } 2143 hdr = (const struct iwi_firmware_ohdr *)fp->data; 2144 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2145 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2146 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n", 2147 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2148 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR, 2149 IWI_FW_REQ_MINOR); 2150 return NULL; 2151 } 2152 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr); 2153 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr); 2154 fw->name = fp->name; 2155 return hdr; 2156} 2157 2158static const struct iwi_firmware_ohdr * 2159iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw) 2160{ 2161 const struct iwi_firmware_ohdr *hdr; 2162 2163 hdr = iwi_setup_ofw(sc, fw); 2164 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) { 2165 device_printf(sc->sc_dev, "%s is not a ucode image\n", 2166 fw->name); 2167 hdr = NULL; 2168 } 2169 return hdr; 2170} 2171 2172static void 2173iwi_getfw(struct iwi_fw *fw, const char *fwname, 2174 struct iwi_fw *uc, const char *ucname) 2175{ 2176 if (fw->fp == NULL) 2177 fw->fp = firmware_get(fwname); 2178 /* NB: pre-3.0 ucode is packaged separately */ 2179 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300) 2180 uc->fp = firmware_get(ucname); 2181} 2182 2183/* 2184 * Get the required firmware images if not already loaded. 2185 * Note that we hold firmware images so long as the device 2186 * is marked up in case we need to reload them on device init. 2187 * This is necessary because we re-init the device sometimes 2188 * from a context where we cannot read from the filesystem 2189 * (e.g. from the taskqueue thread when rfkill is re-enabled). 2190 * XXX return 0 on success, 1 on error. 2191 * 2192 * NB: the order of get'ing and put'ing images here is 2193 * intentional to support handling firmware images bundled 2194 * by operating mode and/or all together in one file with 2195 * the boot firmware as "master". 2196 */ 2197static int 2198iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode) 2199{ 2200 const struct iwi_firmware_hdr *hdr; 2201 const struct firmware *fp; 2202 2203 /* invalidate cached firmware on mode change */ 2204 if (sc->fw_mode != opmode) 2205 iwi_put_firmware(sc); 2206 2207 switch (opmode) { 2208 case IEEE80211_M_STA: 2209 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss"); 2210 break; 2211 case IEEE80211_M_IBSS: 2212 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss"); 2213 break; 2214 case IEEE80211_M_MONITOR: 2215 iwi_getfw(&sc->fw_fw, "iwi_monitor", 2216 &sc->fw_uc, "iwi_ucode_monitor"); 2217 break; 2218 default: 2219 device_printf(sc->sc_dev, "unknown opmode %d\n", opmode); 2220 return EINVAL; 2221 } 2222 fp = sc->fw_fw.fp; 2223 if (fp == NULL) { 2224 device_printf(sc->sc_dev, "could not load firmware\n"); 2225 goto bad; 2226 } 2227 if (fp->version < 300) { 2228 /* 2229 * Firmware prior to 3.0 was packaged as separate 2230 * boot, firmware, and ucode images. Verify the 2231 * ucode image was read in, retrieve the boot image 2232 * if needed, and check version stamps for consistency. 2233 * The version stamps in the data are also checked 2234 * above; this is a bit paranoid but is a cheap 2235 * safeguard against mis-packaging. 2236 */ 2237 if (sc->fw_uc.fp == NULL) { 2238 device_printf(sc->sc_dev, "could not load ucode\n"); 2239 goto bad; 2240 } 2241 if (sc->fw_boot.fp == NULL) { 2242 sc->fw_boot.fp = firmware_get("iwi_boot"); 2243 if (sc->fw_boot.fp == NULL) { 2244 device_printf(sc->sc_dev, 2245 "could not load boot firmware\n"); 2246 goto bad; 2247 } 2248 } 2249 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version || 2250 sc->fw_boot.fp->version != sc->fw_uc.fp->version) { 2251 device_printf(sc->sc_dev, 2252 "firmware version mismatch: " 2253 "'%s' is %d, '%s' is %d, '%s' is %d\n", 2254 sc->fw_boot.fp->name, sc->fw_boot.fp->version, 2255 sc->fw_uc.fp->name, sc->fw_uc.fp->version, 2256 sc->fw_fw.fp->name, sc->fw_fw.fp->version 2257 ); 2258 goto bad; 2259 } 2260 /* 2261 * Check and setup each image. 2262 */ 2263 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL || 2264 iwi_setup_ofw(sc, &sc->fw_boot) == NULL || 2265 iwi_setup_ofw(sc, &sc->fw_fw) == NULL) 2266 goto bad; 2267 } else { 2268 /* 2269 * Check and setup combined image. 2270 */ 2271 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) { 2272 device_printf(sc->sc_dev, "image '%s' too small\n", 2273 fp->name); 2274 goto bad; 2275 } 2276 hdr = (const struct iwi_firmware_hdr *)fp->data; 2277 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize) 2278 + le32toh(hdr->fsize)) { 2279 device_printf(sc->sc_dev, "image '%s' too small (2)\n", 2280 fp->name); 2281 goto bad; 2282 } 2283 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr); 2284 sc->fw_boot.size = le32toh(hdr->bsize); 2285 sc->fw_boot.name = fp->name; 2286 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size; 2287 sc->fw_uc.size = le32toh(hdr->usize); 2288 sc->fw_uc.name = fp->name; 2289 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size; 2290 sc->fw_fw.size = le32toh(hdr->fsize); 2291 sc->fw_fw.name = fp->name; 2292 } 2293#if 0 2294 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n", 2295 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size); 2296#endif 2297 2298 sc->fw_mode = opmode; 2299 return 0; 2300bad: 2301 iwi_put_firmware(sc); 2302 return 1; 2303} 2304 2305static void 2306iwi_put_fw(struct iwi_fw *fw) 2307{ 2308 if (fw->fp != NULL) { 2309 firmware_put(fw->fp, FIRMWARE_UNLOAD); 2310 fw->fp = NULL; 2311 } 2312 fw->data = NULL; 2313 fw->size = 0; 2314 fw->name = NULL; 2315} 2316 2317/* 2318 * Release any cached firmware images. 2319 */ 2320static void 2321iwi_put_firmware(struct iwi_softc *sc) 2322{ 2323 iwi_put_fw(&sc->fw_uc); 2324 iwi_put_fw(&sc->fw_fw); 2325 iwi_put_fw(&sc->fw_boot); 2326} 2327 2328static int 2329iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw) 2330{ 2331 uint32_t tmp; 2332 const uint16_t *w; 2333 const char *uc = fw->data; 2334 size_t size = fw->size; 2335 int i, ntries, error; 2336 2337 IWI_LOCK_ASSERT(sc); 2338 error = 0; 2339 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 2340 IWI_RST_STOP_MASTER); 2341 for (ntries = 0; ntries < 5; ntries++) { 2342 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2343 break; 2344 DELAY(10); 2345 } 2346 if (ntries == 5) { 2347 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2348 error = EIO; 2349 goto fail; 2350 } 2351 2352 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 2353 DELAY(5000); 2354 2355 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2356 tmp &= ~IWI_RST_PRINCETON_RESET; 2357 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2358 2359 DELAY(5000); 2360 MEM_WRITE_4(sc, 0x3000e0, 0); 2361 DELAY(1000); 2362 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1); 2363 DELAY(1000); 2364 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0); 2365 DELAY(1000); 2366 MEM_WRITE_1(sc, 0x200000, 0x00); 2367 MEM_WRITE_1(sc, 0x200000, 0x40); 2368 DELAY(1000); 2369 2370 /* write microcode into adapter memory */ 2371 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2) 2372 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 2373 2374 MEM_WRITE_1(sc, 0x200000, 0x00); 2375 MEM_WRITE_1(sc, 0x200000, 0x80); 2376 2377 /* wait until we get an answer */ 2378 for (ntries = 0; ntries < 100; ntries++) { 2379 if (MEM_READ_1(sc, 0x200000) & 1) 2380 break; 2381 DELAY(100); 2382 } 2383 if (ntries == 100) { 2384 device_printf(sc->sc_dev, 2385 "timeout waiting for ucode to initialize\n"); 2386 error = EIO; 2387 goto fail; 2388 } 2389 2390 /* read the answer or the firmware will not initialize properly */ 2391 for (i = 0; i < 7; i++) 2392 MEM_READ_4(sc, 0x200004); 2393 2394 MEM_WRITE_1(sc, 0x200000, 0x00); 2395 2396fail: 2397 return error; 2398} 2399 2400/* macro to handle unaligned little endian data in firmware image */ 2401#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2402 2403static int 2404iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw) 2405{ 2406 u_char *p, *end; 2407 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp; 2408 int ntries, error; 2409 2410 IWI_LOCK_ASSERT(sc); 2411 2412 /* copy firmware image to DMA memory */ 2413 memcpy(sc->fw_virtaddr, fw->data, fw->size); 2414 2415 /* make sure the adapter will get up-to-date values */ 2416 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE); 2417 2418 /* tell the adapter where the command blocks are stored */ 2419 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2420 2421 /* 2422 * Store command blocks into adapter's internal memory using register 2423 * indirections. The adapter will read the firmware image through DMA 2424 * using information stored in command blocks. 2425 */ 2426 src = sc->fw_physaddr; 2427 p = sc->fw_virtaddr; 2428 end = p + fw->size; 2429 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2430 2431 while (p < end) { 2432 dst = GETLE32(p); p += 4; src += 4; 2433 len = GETLE32(p); p += 4; src += 4; 2434 p += len; 2435 2436 while (len > 0) { 2437 mlen = min(len, IWI_CB_MAXDATALEN); 2438 2439 ctl = IWI_CB_DEFAULT_CTL | mlen; 2440 sum = ctl ^ src ^ dst; 2441 2442 /* write a command block */ 2443 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2444 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 2445 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 2446 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2447 2448 src += mlen; 2449 dst += mlen; 2450 len -= mlen; 2451 } 2452 } 2453 2454 /* write a fictive final command block (sentinel) */ 2455 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2456 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2457 2458 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2459 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 2460 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2461 2462 /* tell the adapter to start processing command blocks */ 2463 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2464 2465 /* wait until the adapter reaches the sentinel */ 2466 for (ntries = 0; ntries < 400; ntries++) { 2467 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2468 break; 2469 DELAY(100); 2470 } 2471 /* sync dma, just in case */ 2472 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE); 2473 if (ntries == 400) { 2474 device_printf(sc->sc_dev, 2475 "timeout processing command blocks for %s firmware\n", 2476 fw->name); 2477 return EIO; 2478 } 2479 2480 /* we're done with command blocks processing */ 2481 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2482 2483 /* allow interrupts so we know when the firmware is ready */ 2484 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2485 2486 /* tell the adapter to initialize the firmware */ 2487 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2488 2489 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2490 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 2491 2492 /* wait at most one second for firmware initialization to complete */ 2493 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) { 2494 device_printf(sc->sc_dev, "timeout waiting for %s firmware " 2495 "initialization to complete\n", fw->name); 2496 } 2497 2498 return error; 2499} 2500 2501static int 2502iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap) 2503{ 2504 uint32_t data; 2505 2506 if (vap->iv_flags & IEEE80211_F_PMGTON) { 2507 /* XXX set more fine-grained operation */ 2508 data = htole32(IWI_POWER_MODE_MAX); 2509 } else 2510 data = htole32(IWI_POWER_MODE_CAM); 2511 2512 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2513 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data); 2514} 2515 2516static int 2517iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap) 2518{ 2519 struct iwi_wep_key wepkey; 2520 struct ieee80211_key *wk; 2521 int error, i; 2522 2523 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2524 wk = &vap->iv_nw_keys[i]; 2525 2526 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2527 wepkey.idx = i; 2528 wepkey.len = wk->wk_keylen; 2529 memset(wepkey.key, 0, sizeof wepkey.key); 2530 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2531 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2532 wepkey.len)); 2533 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2534 sizeof wepkey); 2535 if (error != 0) 2536 return error; 2537 } 2538 return 0; 2539} 2540 2541static int 2542iwi_config(struct iwi_softc *sc) 2543{ 2544 struct ifnet *ifp = sc->sc_ifp; 2545 struct ieee80211com *ic = ifp->if_l2com; 2546 struct iwi_configuration config; 2547 struct iwi_rateset rs; 2548 struct iwi_txpower power; 2549 uint32_t data; 2550 int error, i; 2551 2552 IWI_LOCK_ASSERT(sc); 2553 2554 DPRINTF(("Setting MAC address to %6D\n", IF_LLADDR(ifp), ":")); 2555 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp), 2556 IEEE80211_ADDR_LEN); 2557 if (error != 0) 2558 return error; 2559 2560 memset(&config, 0, sizeof config); 2561 config.bluetooth_coexistence = sc->bluetooth; 2562 config.silence_threshold = 0x1e; 2563 config.antenna = sc->antenna; 2564 config.multicast_enabled = 1; 2565 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2566 config.disable_unicast_decryption = 1; 2567 config.disable_multicast_decryption = 1; 2568 if (ic->ic_opmode == IEEE80211_M_MONITOR) { 2569 config.allow_invalid_frames = 1; 2570 config.allow_beacon_and_probe_resp = 1; 2571 config.allow_mgt = 1; 2572 } 2573 DPRINTF(("Configuring adapter\n")); 2574 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2575 if (error != 0) 2576 return error; 2577 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2578 power.mode = IWI_MODE_11B; 2579 power.nchan = 11; 2580 for (i = 0; i < 11; i++) { 2581 power.chan[i].chan = i + 1; 2582 power.chan[i].power = IWI_TXPOWER_MAX; 2583 } 2584 DPRINTF(("Setting .11b channels tx power\n")); 2585 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2586 if (error != 0) 2587 return error; 2588 2589 power.mode = IWI_MODE_11G; 2590 DPRINTF(("Setting .11g channels tx power\n")); 2591 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2592 if (error != 0) 2593 return error; 2594 } 2595 2596 memset(&rs, 0, sizeof rs); 2597 rs.mode = IWI_MODE_11G; 2598 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2599 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2600 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2601 rs.nrates); 2602 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2603 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2604 if (error != 0) 2605 return error; 2606 2607 memset(&rs, 0, sizeof rs); 2608 rs.mode = IWI_MODE_11A; 2609 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2610 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2611 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2612 rs.nrates); 2613 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2614 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2615 if (error != 0) 2616 return error; 2617 2618 data = htole32(arc4random()); 2619 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2620 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data); 2621 if (error != 0) 2622 return error; 2623 2624 /* enable adapter */ 2625 DPRINTF(("Enabling adapter\n")); 2626 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0); 2627} 2628 2629static __inline void 2630set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type) 2631{ 2632 uint8_t *st = &scan->scan_type[ix / 2]; 2633 if (ix % 2) 2634 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0); 2635 else 2636 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4); 2637} 2638 2639static int 2640scan_type(const struct ieee80211_scan_state *ss, 2641 const struct ieee80211_channel *chan) 2642{ 2643 /* We can only set one essid for a directed scan */ 2644 if (ss->ss_nssid != 0) 2645 return IWI_SCAN_TYPE_BDIRECTED; 2646 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) && 2647 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) 2648 return IWI_SCAN_TYPE_BROADCAST; 2649 return IWI_SCAN_TYPE_PASSIVE; 2650} 2651 2652static __inline int 2653scan_band(const struct ieee80211_channel *c) 2654{ 2655 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ; 2656} 2657 2658static void 2659iwi_monitor_scan(void *arg, int npending) 2660{ 2661 struct iwi_softc *sc = arg; 2662 IWI_LOCK_DECL; 2663 2664 IWI_LOCK(sc); 2665 (void) iwi_scanchan(sc, 2000, 0); 2666 IWI_UNLOCK(sc); 2667} 2668 2669/* 2670 * Start a scan on the current channel or all channels. 2671 */ 2672static int 2673iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan) 2674{ 2675 struct ieee80211com *ic; 2676 struct ieee80211_channel *chan; 2677 struct ieee80211_scan_state *ss; 2678 struct iwi_scan_ext scan; 2679 int error = 0; 2680 2681 IWI_LOCK_ASSERT(sc); 2682 if (sc->fw_state == IWI_FW_SCANNING) { 2683 /* 2684 * This should not happen as we only trigger scan_next after 2685 * completion 2686 */ 2687 DPRINTF(("%s: called too early - still scanning\n", __func__)); 2688 return (EBUSY); 2689 } 2690 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING); 2691 2692 ic = sc->sc_ifp->if_l2com; 2693 ss = ic->ic_scan; 2694 2695 memset(&scan, 0, sizeof scan); 2696 scan.full_scan_index = htole32(++sc->sc_scangen); 2697 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell); 2698 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) { 2699 /* 2700 * Use very short dwell times for when we send probe request 2701 * frames. Without this bg scans hang. Ideally this should 2702 * be handled with early-termination as done by net80211 but 2703 * that's not feasible (aborting a scan is problematic). 2704 */ 2705 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30); 2706 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30); 2707 } else { 2708 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell); 2709 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell); 2710 } 2711 2712 /* We can only set one essid for a directed scan */ 2713 if (ss->ss_nssid != 0) { 2714 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid, 2715 ss->ss_ssid[0].len); 2716 if (error) 2717 return (error); 2718 } 2719 2720 if (allchan) { 2721 int i, next, band, b, bstart; 2722 /* 2723 * Convert scan list to run-length encoded channel list 2724 * the firmware requires (preserving the order setup by 2725 * net80211). The first entry in each run specifies the 2726 * band and the count of items in the run. 2727 */ 2728 next = 0; /* next open slot */ 2729 bstart = 0; /* NB: not needed, silence compiler */ 2730 band = -1; /* NB: impossible value */ 2731 KASSERT(ss->ss_last > 0, ("no channels")); 2732 for (i = 0; i < ss->ss_last; i++) { 2733 chan = ss->ss_chans[i]; 2734 b = scan_band(chan); 2735 if (b != band) { 2736 if (band != -1) 2737 scan.channels[bstart] = 2738 (next - bstart) | band; 2739 /* NB: this allocates a slot for the run-len */ 2740 band = b, bstart = next++; 2741 } 2742 if (next >= IWI_SCAN_CHANNELS) { 2743 DPRINTF(("truncating scan list\n")); 2744 break; 2745 } 2746 scan.channels[next] = ieee80211_chan2ieee(ic, chan); 2747 set_scan_type(&scan, next, scan_type(ss, chan)); 2748 next++; 2749 } 2750 scan.channels[bstart] = (next - bstart) | band; 2751 } else { 2752 /* Scan the current channel only */ 2753 chan = ic->ic_curchan; 2754 scan.channels[0] = 1 | scan_band(chan); 2755 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2756 set_scan_type(&scan, 1, scan_type(ss, chan)); 2757 } 2758#ifdef IWI_DEBUG 2759 if (iwi_debug > 0) { 2760 static const char *scantype[8] = 2761 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" }; 2762 int i; 2763 printf("Scan request: index %u dwell %d/%d/%d\n" 2764 , le32toh(scan.full_scan_index) 2765 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE]) 2766 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST]) 2767 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED]) 2768 ); 2769 i = 0; 2770 do { 2771 int run = scan.channels[i]; 2772 if (run == 0) 2773 break; 2774 printf("Scan %d %s channels:", run & 0x3f, 2775 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz"); 2776 for (run &= 0x3f, i++; run > 0; run--, i++) { 2777 uint8_t type = scan.scan_type[i/2]; 2778 printf(" %u/%s", scan.channels[i], 2779 scantype[(i & 1 ? type : type>>4) & 7]); 2780 } 2781 printf("\n"); 2782 } while (i < IWI_SCAN_CHANNELS); 2783 } 2784#endif 2785 2786 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan)); 2787} 2788 2789static int 2790iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm) 2791{ 2792 struct iwi_sensitivity sens; 2793 2794 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm)); 2795 2796 memset(&sens, 0, sizeof sens); 2797 sens.rssi = htole16(rssi_dbm); 2798 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens); 2799} 2800 2801static int 2802iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap) 2803{ 2804 struct ieee80211com *ic = vap->iv_ic; 2805 struct ifnet *ifp = vap->iv_ifp; 2806 struct ieee80211_node *ni = vap->iv_bss; 2807 struct iwi_configuration config; 2808 struct iwi_associate *assoc = &sc->assoc; 2809 struct iwi_rateset rs; 2810 uint16_t capinfo; 2811 uint32_t data; 2812 int error, mode; 2813 2814 IWI_LOCK_ASSERT(sc); 2815 2816 if (sc->flags & IWI_FLAG_ASSOCIATED) { 2817 DPRINTF(("Already associated\n")); 2818 return (-1); 2819 } 2820 2821 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING); 2822 error = 0; 2823 mode = 0; 2824 2825 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) 2826 mode = IWI_MODE_11A; 2827 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan)) 2828 mode = IWI_MODE_11G; 2829 if (IEEE80211_IS_CHAN_B(ic->ic_curchan)) 2830 mode = IWI_MODE_11B; 2831 2832 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2833 memset(&config, 0, sizeof config); 2834 config.bluetooth_coexistence = sc->bluetooth; 2835 config.antenna = sc->antenna; 2836 config.multicast_enabled = 1; 2837 if (mode == IWI_MODE_11G) 2838 config.use_protection = 1; 2839 config.answer_pbreq = 2840 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2841 config.disable_unicast_decryption = 1; 2842 config.disable_multicast_decryption = 1; 2843 DPRINTF(("Configuring adapter\n")); 2844 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2845 if (error != 0) 2846 goto done; 2847 } 2848 2849#ifdef IWI_DEBUG 2850 if (iwi_debug > 0) { 2851 printf("Setting ESSID to "); 2852 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2853 printf("\n"); 2854 } 2855#endif 2856 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen); 2857 if (error != 0) 2858 goto done; 2859 2860 error = iwi_setpowermode(sc, vap); 2861 if (error != 0) 2862 goto done; 2863 2864 data = htole32(vap->iv_rtsthreshold); 2865 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2866 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2867 if (error != 0) 2868 goto done; 2869 2870 data = htole32(vap->iv_fragthreshold); 2871 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2872 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2873 if (error != 0) 2874 goto done; 2875 2876 /* the rate set has already been "negotiated" */ 2877 memset(&rs, 0, sizeof rs); 2878 rs.mode = mode; 2879 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2880 rs.nrates = ni->ni_rates.rs_nrates; 2881 if (rs.nrates > IWI_RATESET_SIZE) { 2882 DPRINTF(("Truncating negotiated rate set from %u\n", 2883 rs.nrates)); 2884 rs.nrates = IWI_RATESET_SIZE; 2885 } 2886 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2887 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2888 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2889 if (error != 0) 2890 goto done; 2891 2892 memset(assoc, 0, sizeof *assoc); 2893 2894 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) { 2895 /* NB: don't treat WME setup as failure */ 2896 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0) 2897 assoc->policy |= htole16(IWI_POLICY_WME); 2898 /* XXX complain on failure? */ 2899 } 2900 2901 if (vap->iv_appie_wpa != NULL) { 2902 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2903 2904 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len)); 2905 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len); 2906 if (error != 0) 2907 goto done; 2908 } 2909 2910 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni)); 2911 if (error != 0) 2912 goto done; 2913 2914 assoc->mode = mode; 2915 assoc->chan = ic->ic_curchan->ic_ieee; 2916 /* 2917 * NB: do not arrange for shared key auth w/o privacy 2918 * (i.e. a wep key); it causes a firmware error. 2919 */ 2920 if ((vap->iv_flags & IEEE80211_F_PRIVACY) && 2921 ni->ni_authmode == IEEE80211_AUTH_SHARED) { 2922 assoc->auth = IWI_AUTH_SHARED; 2923 /* 2924 * It's possible to have privacy marked but no default 2925 * key setup. This typically is due to a user app bug 2926 * but if we blindly grab the key the firmware will 2927 * barf so avoid it for now. 2928 */ 2929 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) 2930 assoc->auth |= vap->iv_def_txkey << 4; 2931 2932 error = iwi_setwepkeys(sc, vap); 2933 if (error != 0) 2934 goto done; 2935 } 2936 if (vap->iv_flags & IEEE80211_F_WPA) 2937 assoc->policy |= htole16(IWI_POLICY_WPA); 2938 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2939 assoc->type = IWI_HC_IBSS_START; 2940 else 2941 assoc->type = IWI_HC_ASSOC; 2942 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8); 2943 2944 if (vap->iv_opmode == IEEE80211_M_IBSS) 2945 capinfo = IEEE80211_CAPINFO_IBSS; 2946 else 2947 capinfo = IEEE80211_CAPINFO_ESS; 2948 if (vap->iv_flags & IEEE80211_F_PRIVACY) 2949 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2950 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2951 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 2952 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2953 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 2954 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2955 assoc->capinfo = htole16(capinfo); 2956 2957 assoc->lintval = htole16(ic->ic_lintval); 2958 assoc->intval = htole16(ni->ni_intval); 2959 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid); 2960 if (vap->iv_opmode == IEEE80211_M_IBSS) 2961 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr); 2962 else 2963 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid); 2964 2965 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x " 2966 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2967 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join", 2968 assoc->bssid, ":", assoc->dst, ":", 2969 assoc->chan, le16toh(assoc->policy), assoc->auth, 2970 le16toh(assoc->capinfo), le16toh(assoc->lintval), 2971 le16toh(assoc->intval))); 2972 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2973done: 2974 if (error) 2975 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 2976 2977 return (error); 2978} 2979 2980static void 2981iwi_disassoc(void *arg, int pending) 2982{ 2983 struct iwi_softc *sc = arg; 2984 IWI_LOCK_DECL; 2985 2986 IWI_LOCK(sc); 2987 iwi_disassociate(sc, 0); 2988 IWI_UNLOCK(sc); 2989} 2990 2991static int 2992iwi_disassociate(struct iwi_softc *sc, int quiet) 2993{ 2994 struct iwi_associate *assoc = &sc->assoc; 2995 2996 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) { 2997 DPRINTF(("Not associated\n")); 2998 return (-1); 2999 } 3000 3001 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING); 3002 3003 if (quiet) 3004 assoc->type = IWI_HC_DISASSOC_QUIET; 3005 else 3006 assoc->type = IWI_HC_DISASSOC; 3007 3008 DPRINTF(("Trying to disassociate from %6D channel %u\n", 3009 assoc->bssid, ":", assoc->chan)); 3010 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 3011} 3012 3013/* 3014 * release dma resources for the firmware 3015 */ 3016static void 3017iwi_release_fw_dma(struct iwi_softc *sc) 3018{ 3019 if (sc->fw_flags & IWI_FW_HAVE_PHY) 3020 bus_dmamap_unload(sc->fw_dmat, sc->fw_map); 3021 if (sc->fw_flags & IWI_FW_HAVE_MAP) 3022 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map); 3023 if (sc->fw_flags & IWI_FW_HAVE_DMAT) 3024 bus_dma_tag_destroy(sc->fw_dmat); 3025 3026 sc->fw_flags = 0; 3027 sc->fw_dma_size = 0; 3028 sc->fw_dmat = NULL; 3029 sc->fw_map = NULL; 3030 sc->fw_physaddr = 0; 3031 sc->fw_virtaddr = NULL; 3032} 3033 3034/* 3035 * allocate the dma descriptor for the firmware. 3036 * Return 0 on success, 1 on error. 3037 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING. 3038 */ 3039static int 3040iwi_init_fw_dma(struct iwi_softc *sc, int size) 3041{ 3042 if (sc->fw_dma_size >= size) 3043 return 0; 3044 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 3045 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 3046 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) { 3047 device_printf(sc->sc_dev, 3048 "could not create firmware DMA tag\n"); 3049 goto error; 3050 } 3051 sc->fw_flags |= IWI_FW_HAVE_DMAT; 3052 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0, 3053 &sc->fw_map) != 0) { 3054 device_printf(sc->sc_dev, 3055 "could not allocate firmware DMA memory\n"); 3056 goto error; 3057 } 3058 sc->fw_flags |= IWI_FW_HAVE_MAP; 3059 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr, 3060 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) { 3061 device_printf(sc->sc_dev, "could not load firmware DMA map\n"); 3062 goto error; 3063 } 3064 sc->fw_flags |= IWI_FW_HAVE_PHY; 3065 sc->fw_dma_size = size; 3066 return 0; 3067 3068error: 3069 iwi_release_fw_dma(sc); 3070 return 1; 3071} 3072 3073static void 3074iwi_init_locked(struct iwi_softc *sc) 3075{ 3076 struct ifnet *ifp = sc->sc_ifp; 3077 struct iwi_rx_data *data; 3078 int i; 3079 3080 IWI_LOCK_ASSERT(sc); 3081 3082 if (sc->fw_state == IWI_FW_LOADING) { 3083 device_printf(sc->sc_dev, "%s: already loading\n", __func__); 3084 return; /* XXX: condvar? */ 3085 } 3086 3087 iwi_stop_locked(sc); 3088 3089 IWI_STATE_BEGIN(sc, IWI_FW_LOADING); 3090 3091 if (iwi_reset(sc) != 0) { 3092 device_printf(sc->sc_dev, "could not reset adapter\n"); 3093 goto fail; 3094 } 3095 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) { 3096 device_printf(sc->sc_dev, 3097 "could not load boot firmware %s\n", sc->fw_boot.name); 3098 goto fail; 3099 } 3100 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) { 3101 device_printf(sc->sc_dev, 3102 "could not load microcode %s\n", sc->fw_uc.name); 3103 goto fail; 3104 } 3105 3106 iwi_stop_master(sc); 3107 3108 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr); 3109 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 3110 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 3111 3112 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr); 3113 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 3114 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 3115 3116 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr); 3117 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 3118 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 3119 3120 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr); 3121 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 3122 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 3123 3124 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr); 3125 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 3126 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 3127 3128 for (i = 0; i < sc->rxq.count; i++) { 3129 data = &sc->rxq.data[i]; 3130 CSR_WRITE_4(sc, data->reg, data->physaddr); 3131 } 3132 3133 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1); 3134 3135 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) { 3136 device_printf(sc->sc_dev, 3137 "could not load main firmware %s\n", sc->fw_fw.name); 3138 goto fail; 3139 } 3140 sc->flags |= IWI_FLAG_FW_INITED; 3141 3142 IWI_STATE_END(sc, IWI_FW_LOADING); 3143 3144 if (iwi_config(sc) != 0) { 3145 device_printf(sc->sc_dev, "unable to enable adapter\n"); 3146 goto fail2; 3147 } 3148 3149 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc); 3150 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3151 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3152 return; 3153fail: 3154 IWI_STATE_END(sc, IWI_FW_LOADING); 3155fail2: 3156 iwi_stop_locked(sc); 3157} 3158 3159static void 3160iwi_init(void *priv) 3161{ 3162 struct iwi_softc *sc = priv; 3163 struct ifnet *ifp = sc->sc_ifp; 3164 struct ieee80211com *ic = ifp->if_l2com; 3165 IWI_LOCK_DECL; 3166 3167 IWI_LOCK(sc); 3168 iwi_init_locked(sc); 3169 IWI_UNLOCK(sc); 3170 3171 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3172 ieee80211_start_all(ic); 3173} 3174 3175static void 3176iwi_stop_locked(void *priv) 3177{ 3178 struct iwi_softc *sc = priv; 3179 struct ifnet *ifp = sc->sc_ifp; 3180 3181 IWI_LOCK_ASSERT(sc); 3182 3183 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3184 3185 if (sc->sc_softled) { 3186 callout_stop(&sc->sc_ledtimer); 3187 sc->sc_blinking = 0; 3188 } 3189 callout_stop(&sc->sc_wdtimer); 3190 callout_stop(&sc->sc_rftimer); 3191 3192 iwi_stop_master(sc); 3193 3194 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET); 3195 3196 /* reset rings */ 3197 iwi_reset_cmd_ring(sc, &sc->cmdq); 3198 iwi_reset_tx_ring(sc, &sc->txq[0]); 3199 iwi_reset_tx_ring(sc, &sc->txq[1]); 3200 iwi_reset_tx_ring(sc, &sc->txq[2]); 3201 iwi_reset_tx_ring(sc, &sc->txq[3]); 3202 iwi_reset_rx_ring(sc, &sc->rxq); 3203 3204 sc->sc_tx_timer = 0; 3205 sc->sc_state_timer = 0; 3206 sc->sc_busy_timer = 0; 3207 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED); 3208 sc->fw_state = IWI_FW_IDLE; 3209 wakeup(sc); 3210} 3211 3212static void 3213iwi_stop(struct iwi_softc *sc) 3214{ 3215 IWI_LOCK_DECL; 3216 3217 IWI_LOCK(sc); 3218 iwi_stop_locked(sc); 3219 IWI_UNLOCK(sc); 3220} 3221 3222static void 3223iwi_restart(void *arg, int npending) 3224{ 3225 struct iwi_softc *sc = arg; 3226 3227 iwi_init(sc); 3228} 3229 3230/* 3231 * Return whether or not the radio is enabled in hardware 3232 * (i.e. the rfkill switch is "off"). 3233 */ 3234static int 3235iwi_getrfkill(struct iwi_softc *sc) 3236{ 3237 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 3238} 3239 3240static void 3241iwi_radio_on(void *arg, int pending) 3242{ 3243 struct iwi_softc *sc = arg; 3244 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3245 3246 device_printf(sc->sc_dev, "radio turned on\n"); 3247 3248 iwi_init(sc); 3249 ieee80211_notify_radio(ic, 1); 3250} 3251 3252static void 3253iwi_rfkill_poll(void *arg) 3254{ 3255 struct iwi_softc *sc = arg; 3256 3257 IWI_LOCK_ASSERT(sc); 3258 3259 /* 3260 * Check for a change in rfkill state. We get an 3261 * interrupt when a radio is disabled but not when 3262 * it is enabled so we must poll for the latter. 3263 */ 3264 if (!iwi_getrfkill(sc)) { 3265 struct ifnet *ifp = sc->sc_ifp; 3266 struct ieee80211com *ic = ifp->if_l2com; 3267 3268 ieee80211_runtask(ic, &sc->sc_radiontask); 3269 return; 3270 } 3271 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc); 3272} 3273 3274static void 3275iwi_radio_off(void *arg, int pending) 3276{ 3277 struct iwi_softc *sc = arg; 3278 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3279 IWI_LOCK_DECL; 3280 3281 device_printf(sc->sc_dev, "radio turned off\n"); 3282 3283 ieee80211_notify_radio(ic, 0); 3284 3285 IWI_LOCK(sc); 3286 iwi_stop_locked(sc); 3287 iwi_rfkill_poll(sc); 3288 IWI_UNLOCK(sc); 3289} 3290 3291static int 3292iwi_sysctl_stats(SYSCTL_HANDLER_ARGS) 3293{ 3294 struct iwi_softc *sc = arg1; 3295 uint32_t size, buf[128]; 3296 3297 memset(buf, 0, sizeof buf); 3298 3299 if (!(sc->flags & IWI_FLAG_FW_INITED)) 3300 return SYSCTL_OUT(req, buf, sizeof buf); 3301 3302 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 3303 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 3304 3305 return SYSCTL_OUT(req, buf, size); 3306} 3307 3308static int 3309iwi_sysctl_radio(SYSCTL_HANDLER_ARGS) 3310{ 3311 struct iwi_softc *sc = arg1; 3312 int val = !iwi_getrfkill(sc); 3313 3314 return SYSCTL_OUT(req, &val, sizeof val); 3315} 3316 3317/* 3318 * Add sysctl knobs. 3319 */ 3320static void 3321iwi_sysctlattach(struct iwi_softc *sc) 3322{ 3323 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 3324 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 3325 3326 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio", 3327 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I", 3328 "radio transmitter switch state (0=off, 1=on)"); 3329 3330 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats", 3331 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S", 3332 "statistics"); 3333 3334 sc->bluetooth = 0; 3335 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth", 3336 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence"); 3337 3338 sc->antenna = IWI_ANTENNA_AUTO; 3339 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna", 3340 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)"); 3341} 3342 3343/* 3344 * LED support. 3345 * 3346 * Different cards have different capabilities. Some have three 3347 * led's while others have only one. The linux ipw driver defines 3348 * led's for link state (associated or not), band (11a, 11g, 11b), 3349 * and for link activity. We use one led and vary the blink rate 3350 * according to the tx/rx traffic a la the ath driver. 3351 */ 3352 3353static __inline uint32_t 3354iwi_toggle_event(uint32_t r) 3355{ 3356 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA | 3357 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA); 3358} 3359 3360static uint32_t 3361iwi_read_event(struct iwi_softc *sc) 3362{ 3363 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT); 3364} 3365 3366static void 3367iwi_write_event(struct iwi_softc *sc, uint32_t v) 3368{ 3369 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v); 3370} 3371 3372static void 3373iwi_led_done(void *arg) 3374{ 3375 struct iwi_softc *sc = arg; 3376 3377 sc->sc_blinking = 0; 3378} 3379 3380/* 3381 * Turn the activity LED off: flip the pin and then set a timer so no 3382 * update will happen for the specified duration. 3383 */ 3384static void 3385iwi_led_off(void *arg) 3386{ 3387 struct iwi_softc *sc = arg; 3388 uint32_t v; 3389 3390 v = iwi_read_event(sc); 3391 v &= ~sc->sc_ledpin; 3392 iwi_write_event(sc, iwi_toggle_event(v)); 3393 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc); 3394} 3395 3396/* 3397 * Blink the LED according to the specified on/off times. 3398 */ 3399static void 3400iwi_led_blink(struct iwi_softc *sc, int on, int off) 3401{ 3402 uint32_t v; 3403 3404 v = iwi_read_event(sc); 3405 v |= sc->sc_ledpin; 3406 iwi_write_event(sc, iwi_toggle_event(v)); 3407 sc->sc_blinking = 1; 3408 sc->sc_ledoff = off; 3409 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc); 3410} 3411 3412static void 3413iwi_led_event(struct iwi_softc *sc, int event) 3414{ 3415#define N(a) (sizeof(a)/sizeof(a[0])) 3416 /* NB: on/off times from the Atheros NDIS driver, w/ permission */ 3417 static const struct { 3418 u_int rate; /* tx/rx iwi rate */ 3419 u_int16_t timeOn; /* LED on time (ms) */ 3420 u_int16_t timeOff; /* LED off time (ms) */ 3421 } blinkrates[] = { 3422 { IWI_RATE_OFDM54, 40, 10 }, 3423 { IWI_RATE_OFDM48, 44, 11 }, 3424 { IWI_RATE_OFDM36, 50, 13 }, 3425 { IWI_RATE_OFDM24, 57, 14 }, 3426 { IWI_RATE_OFDM18, 67, 16 }, 3427 { IWI_RATE_OFDM12, 80, 20 }, 3428 { IWI_RATE_DS11, 100, 25 }, 3429 { IWI_RATE_OFDM9, 133, 34 }, 3430 { IWI_RATE_OFDM6, 160, 40 }, 3431 { IWI_RATE_DS5, 200, 50 }, 3432 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */ 3433 { IWI_RATE_DS2, 267, 66 }, 3434 { IWI_RATE_DS1, 400, 100 }, 3435 { 0, 500, 130 }, /* unknown rate/polling */ 3436 }; 3437 uint32_t txrate; 3438 int j = 0; /* XXX silence compiler */ 3439 3440 sc->sc_ledevent = ticks; /* time of last event */ 3441 if (sc->sc_blinking) /* don't interrupt active blink */ 3442 return; 3443 switch (event) { 3444 case IWI_LED_POLL: 3445 j = N(blinkrates)-1; 3446 break; 3447 case IWI_LED_TX: 3448 /* read current transmission rate from adapter */ 3449 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 3450 if (blinkrates[sc->sc_txrix].rate != txrate) { 3451 for (j = 0; j < N(blinkrates)-1; j++) 3452 if (blinkrates[j].rate == txrate) 3453 break; 3454 sc->sc_txrix = j; 3455 } else 3456 j = sc->sc_txrix; 3457 break; 3458 case IWI_LED_RX: 3459 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) { 3460 for (j = 0; j < N(blinkrates)-1; j++) 3461 if (blinkrates[j].rate == sc->sc_rxrate) 3462 break; 3463 sc->sc_rxrix = j; 3464 } else 3465 j = sc->sc_rxrix; 3466 break; 3467 } 3468 /* XXX beware of overflow */ 3469 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000, 3470 (blinkrates[j].timeOff * hz) / 1000); 3471#undef N 3472} 3473 3474static int 3475iwi_sysctl_softled(SYSCTL_HANDLER_ARGS) 3476{ 3477 struct iwi_softc *sc = arg1; 3478 int softled = sc->sc_softled; 3479 int error; 3480 3481 error = sysctl_handle_int(oidp, &softled, 0, req); 3482 if (error || !req->newptr) 3483 return error; 3484 softled = (softled != 0); 3485 if (softled != sc->sc_softled) { 3486 if (softled) { 3487 uint32_t v = iwi_read_event(sc); 3488 v &= ~sc->sc_ledpin; 3489 iwi_write_event(sc, iwi_toggle_event(v)); 3490 } 3491 sc->sc_softled = softled; 3492 } 3493 return 0; 3494} 3495 3496static void 3497iwi_ledattach(struct iwi_softc *sc) 3498{ 3499 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 3500 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 3501 3502 sc->sc_blinking = 0; 3503 sc->sc_ledstate = 1; 3504 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */ 3505 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0); 3506 3507 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3508 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 3509 iwi_sysctl_softled, "I", "enable/disable software LED support"); 3510 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3511 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0, 3512 "pin setting to turn activity LED on"); 3513 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3514 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0, 3515 "idle time for inactivity LED (ticks)"); 3516 /* XXX for debugging */ 3517 SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3518 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0, 3519 "NIC type from EEPROM"); 3520 3521 sc->sc_ledpin = IWI_RST_LED_ACTIVITY; 3522 sc->sc_softled = 1; 3523 3524 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff; 3525 if (sc->sc_nictype == 1) { 3526 /* 3527 * NB: led's are reversed. 3528 */ 3529 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED; 3530 } 3531} 3532 3533static void 3534iwi_scan_start(struct ieee80211com *ic) 3535{ 3536 /* ignore */ 3537} 3538 3539static void 3540iwi_set_channel(struct ieee80211com *ic) 3541{ 3542 struct ifnet *ifp = ic->ic_ifp; 3543 struct iwi_softc *sc = ifp->if_softc; 3544 if (sc->fw_state == IWI_FW_IDLE) 3545 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee); 3546} 3547 3548static void 3549iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3550{ 3551 struct ieee80211vap *vap = ss->ss_vap; 3552 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3553 struct iwi_softc *sc = ifp->if_softc; 3554 IWI_LOCK_DECL; 3555 3556 IWI_LOCK(sc); 3557 if (iwi_scanchan(sc, maxdwell, 0)) 3558 ieee80211_cancel_scan(vap); 3559 IWI_UNLOCK(sc); 3560} 3561 3562static void 3563iwi_scan_mindwell(struct ieee80211_scan_state *ss) 3564{ 3565 /* NB: don't try to abort scan; wait for firmware to finish */ 3566} 3567 3568static void 3569iwi_scan_end(struct ieee80211com *ic) 3570{ 3571 struct ifnet *ifp = ic->ic_ifp; 3572 struct iwi_softc *sc = ifp->if_softc; 3573 IWI_LOCK_DECL; 3574 3575 IWI_LOCK(sc); 3576 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN; 3577 /* NB: make sure we're still scanning */ 3578 if (sc->fw_state == IWI_FW_SCANNING) 3579 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0); 3580 IWI_UNLOCK(sc); 3581} 3582