if_iwi.c revision 191912
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: head/sys/dev/iwi/if_iwi.c 191912 2009-05-08 13:44:33Z thompsa $"); 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/kthread.h> 57#include <sys/taskqueue.h> 58 59#include <machine/bus.h> 60#include <machine/resource.h> 61#include <sys/rman.h> 62 63#include <dev/pci/pcireg.h> 64#include <dev/pci/pcivar.h> 65 66#include <net/bpf.h> 67#include <net/if.h> 68#include <net/if_arp.h> 69#include <net/ethernet.h> 70#include <net/if_dl.h> 71#include <net/if_media.h> 72#include <net/if_types.h> 73 74#include <net80211/ieee80211_var.h> 75#include <net80211/ieee80211_radiotap.h> 76#include <net80211/ieee80211_input.h> 77#include <net80211/ieee80211_regdomain.h> 78 79#include <netinet/in.h> 80#include <netinet/in_systm.h> 81#include <netinet/in_var.h> 82#include <netinet/ip.h> 83#include <netinet/if_ether.h> 84 85#include <dev/iwi/if_iwireg.h> 86#include <dev/iwi/if_iwivar.h> 87 88#define IWI_DEBUG 89#ifdef IWI_DEBUG 90#define DPRINTF(x) do { if (iwi_debug > 0) printf x; } while (0) 91#define DPRINTFN(n, x) do { if (iwi_debug >= (n)) printf x; } while (0) 92int iwi_debug = 0; 93SYSCTL_INT(_debug, OID_AUTO, iwi, CTLFLAG_RW, &iwi_debug, 0, "iwi debug level"); 94 95static const char *iwi_fw_states[] = { 96 "IDLE", /* IWI_FW_IDLE */ 97 "LOADING", /* IWI_FW_LOADING */ 98 "ASSOCIATING", /* IWI_FW_ASSOCIATING */ 99 "DISASSOCIATING", /* IWI_FW_DISASSOCIATING */ 100 "SCANNING", /* IWI_FW_SCANNING */ 101}; 102#else 103#define DPRINTF(x) 104#define DPRINTFN(n, x) 105#endif 106 107MODULE_DEPEND(iwi, pci, 1, 1, 1); 108MODULE_DEPEND(iwi, wlan, 1, 1, 1); 109MODULE_DEPEND(iwi, firmware, 1, 1, 1); 110 111enum { 112 IWI_LED_TX, 113 IWI_LED_RX, 114 IWI_LED_POLL, 115}; 116 117struct iwi_ident { 118 uint16_t vendor; 119 uint16_t device; 120 const char *name; 121}; 122 123static const struct iwi_ident iwi_ident_table[] = { 124 { 0x8086, 0x4220, "Intel(R) PRO/Wireless 2200BG" }, 125 { 0x8086, 0x4221, "Intel(R) PRO/Wireless 2225BG" }, 126 { 0x8086, 0x4223, "Intel(R) PRO/Wireless 2915ABG" }, 127 { 0x8086, 0x4224, "Intel(R) PRO/Wireless 2915ABG" }, 128 129 { 0, 0, NULL } 130}; 131 132static struct ieee80211vap *iwi_vap_create(struct ieee80211com *, 133 const char name[IFNAMSIZ], int unit, int opmode, int flags, 134 const uint8_t bssid[IEEE80211_ADDR_LEN], 135 const uint8_t mac[IEEE80211_ADDR_LEN]); 136static void iwi_vap_delete(struct ieee80211vap *); 137static void iwi_dma_map_addr(void *, bus_dma_segment_t *, int, int); 138static int iwi_alloc_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *, 139 int); 140static void iwi_reset_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 141static void iwi_free_cmd_ring(struct iwi_softc *, struct iwi_cmd_ring *); 142static int iwi_alloc_tx_ring(struct iwi_softc *, struct iwi_tx_ring *, 143 int, bus_addr_t, bus_addr_t); 144static void iwi_reset_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 145static void iwi_free_tx_ring(struct iwi_softc *, struct iwi_tx_ring *); 146static int iwi_alloc_rx_ring(struct iwi_softc *, struct iwi_rx_ring *, 147 int); 148static void iwi_reset_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 149static void iwi_free_rx_ring(struct iwi_softc *, struct iwi_rx_ring *); 150static struct ieee80211_node *iwi_node_alloc(struct ieee80211vap *, 151 const uint8_t [IEEE80211_ADDR_LEN]); 152static void iwi_node_free(struct ieee80211_node *); 153static void iwi_media_status(struct ifnet *, struct ifmediareq *); 154static int iwi_newstate(struct ieee80211vap *, enum ieee80211_state, int); 155static void iwi_wme_init(struct iwi_softc *); 156static int iwi_wme_setparams(struct iwi_softc *, struct ieee80211com *); 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 int iwi_scanchan(struct iwi_softc *, unsigned long, int); 184static void iwi_scan_start(struct ieee80211com *); 185static void iwi_scan_end(struct ieee80211com *); 186static void iwi_set_channel(struct ieee80211com *); 187static void iwi_scan_curchan(struct ieee80211_scan_state *, unsigned long maxdwell); 188static void iwi_scan_mindwell(struct ieee80211_scan_state *); 189static int iwi_auth_and_assoc(struct iwi_softc *, struct ieee80211vap *); 190static void iwi_disassoc(void *, int); 191static int iwi_disassociate(struct iwi_softc *, int quiet); 192static void iwi_init_locked(struct iwi_softc *); 193static void iwi_init(void *); 194static int iwi_init_fw_dma(struct iwi_softc *, int); 195static void iwi_stop_locked(void *); 196static void iwi_stop(struct iwi_softc *); 197static void iwi_restart(void *, int); 198static int iwi_getrfkill(struct iwi_softc *); 199static void iwi_radio_on(void *, int); 200static void iwi_radio_off(void *, int); 201static void iwi_sysctlattach(struct iwi_softc *); 202static void iwi_led_event(struct iwi_softc *, int); 203static void iwi_ledattach(struct iwi_softc *); 204 205static int iwi_probe(device_t); 206static int iwi_attach(device_t); 207static int iwi_detach(device_t); 208static int iwi_shutdown(device_t); 209static int iwi_suspend(device_t); 210static int iwi_resume(device_t); 211 212static device_method_t iwi_methods[] = { 213 /* Device interface */ 214 DEVMETHOD(device_probe, iwi_probe), 215 DEVMETHOD(device_attach, iwi_attach), 216 DEVMETHOD(device_detach, iwi_detach), 217 DEVMETHOD(device_shutdown, iwi_shutdown), 218 DEVMETHOD(device_suspend, iwi_suspend), 219 DEVMETHOD(device_resume, iwi_resume), 220 221 { 0, 0 } 222}; 223 224static driver_t iwi_driver = { 225 "iwi", 226 iwi_methods, 227 sizeof (struct iwi_softc) 228}; 229 230static devclass_t iwi_devclass; 231 232DRIVER_MODULE(iwi, pci, iwi_driver, iwi_devclass, 0, 0); 233 234static __inline uint8_t 235MEM_READ_1(struct iwi_softc *sc, uint32_t addr) 236{ 237 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 238 return CSR_READ_1(sc, IWI_CSR_INDIRECT_DATA); 239} 240 241static __inline uint32_t 242MEM_READ_4(struct iwi_softc *sc, uint32_t addr) 243{ 244 CSR_WRITE_4(sc, IWI_CSR_INDIRECT_ADDR, addr); 245 return CSR_READ_4(sc, IWI_CSR_INDIRECT_DATA); 246} 247 248static int 249iwi_probe(device_t dev) 250{ 251 const struct iwi_ident *ident; 252 253 for (ident = iwi_ident_table; ident->name != NULL; ident++) { 254 if (pci_get_vendor(dev) == ident->vendor && 255 pci_get_device(dev) == ident->device) { 256 device_set_desc(dev, ident->name); 257 return 0; 258 } 259 } 260 return ENXIO; 261} 262 263/* Base Address Register */ 264#define IWI_PCI_BAR0 0x10 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); 294 295 callout_init_mtx(&sc->sc_wdtimer, &sc->sc_mtx, 0); 296 callout_init_mtx(&sc->sc_rftimer, &sc->sc_mtx, 0); 297 298 if (pci_get_powerstate(dev) != PCI_POWERSTATE_D0) { 299 device_printf(dev, "chip is in D%d power mode " 300 "-- setting to D0\n", pci_get_powerstate(dev)); 301 pci_set_powerstate(dev, PCI_POWERSTATE_D0); 302 } 303 304 pci_write_config(dev, 0x41, 0, 1); 305 306 /* enable bus-mastering */ 307 pci_enable_busmaster(dev); 308 309 sc->mem_rid = IWI_PCI_BAR0; 310 sc->mem = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &sc->mem_rid, 311 RF_ACTIVE); 312 if (sc->mem == NULL) { 313 device_printf(dev, "could not allocate memory resource\n"); 314 goto fail; 315 } 316 317 sc->sc_st = rman_get_bustag(sc->mem); 318 sc->sc_sh = rman_get_bushandle(sc->mem); 319 320 sc->irq_rid = 0; 321 sc->irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &sc->irq_rid, 322 RF_ACTIVE | RF_SHAREABLE); 323 if (sc->irq == NULL) { 324 device_printf(dev, "could not allocate interrupt resource\n"); 325 goto fail; 326 } 327 328 if (iwi_reset(sc) != 0) { 329 device_printf(dev, "could not reset adapter\n"); 330 goto fail; 331 } 332 333 /* 334 * Allocate rings. 335 */ 336 if (iwi_alloc_cmd_ring(sc, &sc->cmdq, IWI_CMD_RING_COUNT) != 0) { 337 device_printf(dev, "could not allocate Cmd ring\n"); 338 goto fail; 339 } 340 341 for (i = 0; i < 4; i++) { 342 error = iwi_alloc_tx_ring(sc, &sc->txq[i], IWI_TX_RING_COUNT, 343 IWI_CSR_TX1_RIDX + i * 4, 344 IWI_CSR_TX1_WIDX + i * 4); 345 if (error != 0) { 346 device_printf(dev, "could not allocate Tx ring %d\n", 347 i+i); 348 goto fail; 349 } 350 } 351 352 if (iwi_alloc_rx_ring(sc, &sc->rxq, IWI_RX_RING_COUNT) != 0) { 353 device_printf(dev, "could not allocate Rx ring\n"); 354 goto fail; 355 } 356 357 iwi_wme_init(sc); 358 359 ifp->if_softc = sc; 360 if_initname(ifp, device_get_name(dev), device_get_unit(dev)); 361 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 362 ifp->if_init = iwi_init; 363 ifp->if_ioctl = iwi_ioctl; 364 ifp->if_start = iwi_start; 365 IFQ_SET_MAXLEN(&ifp->if_snd, IFQ_MAXLEN); 366 ifp->if_snd.ifq_drv_maxlen = IFQ_MAXLEN; 367 IFQ_SET_READY(&ifp->if_snd); 368 369 ic->ic_ifp = ifp; 370 ic->ic_opmode = IEEE80211_M_STA; 371 ic->ic_phytype = IEEE80211_T_OFDM; /* not only, but not used */ 372 373 /* set device capabilities */ 374 ic->ic_caps = 375 IEEE80211_C_STA /* station mode supported */ 376 | IEEE80211_C_IBSS /* IBSS mode supported */ 377 | IEEE80211_C_MONITOR /* monitor mode supported */ 378 | IEEE80211_C_PMGT /* power save supported */ 379 | IEEE80211_C_SHPREAMBLE /* short preamble supported */ 380 | IEEE80211_C_WPA /* 802.11i */ 381 | IEEE80211_C_WME /* 802.11e */ 382#if 0 383 | IEEE80211_C_BGSCAN /* capable of bg scanning */ 384#endif 385 ; 386 387 /* read MAC address from EEPROM */ 388 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 0); 389 macaddr[0] = val & 0xff; 390 macaddr[1] = val >> 8; 391 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 1); 392 macaddr[2] = val & 0xff; 393 macaddr[3] = val >> 8; 394 val = iwi_read_prom_word(sc, IWI_EEPROM_MAC + 2); 395 macaddr[4] = val & 0xff; 396 macaddr[5] = val >> 8; 397 398 bands = 0; 399 setbit(&bands, IEEE80211_MODE_11B); 400 setbit(&bands, IEEE80211_MODE_11G); 401 if (pci_get_device(dev) >= 0x4223) 402 setbit(&bands, IEEE80211_MODE_11A); 403 ieee80211_init_channels(ic, NULL, &bands); 404 405 ieee80211_ifattach(ic, macaddr); 406 /* override default methods */ 407 ic->ic_node_alloc = iwi_node_alloc; 408 sc->sc_node_free = ic->ic_node_free; 409 ic->ic_node_free = iwi_node_free; 410 ic->ic_raw_xmit = iwi_raw_xmit; 411 ic->ic_scan_start = iwi_scan_start; 412 ic->ic_scan_end = iwi_scan_end; 413 ic->ic_set_channel = iwi_set_channel; 414 ic->ic_scan_curchan = iwi_scan_curchan; 415 ic->ic_scan_mindwell = iwi_scan_mindwell; 416 ic->ic_wme.wme_update = iwi_wme_update; 417 418 ic->ic_vap_create = iwi_vap_create; 419 ic->ic_vap_delete = iwi_vap_delete; 420 421 bpfattach(ifp, DLT_IEEE802_11_RADIO, 422 sizeof (struct ieee80211_frame) + sizeof (sc->sc_txtap)); 423 424 sc->sc_rxtap_len = sizeof sc->sc_rxtap; 425 sc->sc_rxtap.wr_ihdr.it_len = htole16(sc->sc_rxtap_len); 426 sc->sc_rxtap.wr_ihdr.it_present = htole32(IWI_RX_RADIOTAP_PRESENT); 427 428 sc->sc_txtap_len = sizeof sc->sc_txtap; 429 sc->sc_txtap.wt_ihdr.it_len = htole16(sc->sc_txtap_len); 430 sc->sc_txtap.wt_ihdr.it_present = htole32(IWI_TX_RADIOTAP_PRESENT); 431 432 iwi_sysctlattach(sc); 433 iwi_ledattach(sc); 434 435 /* 436 * Hook our interrupt after all initialization is complete. 437 */ 438 error = bus_setup_intr(dev, sc->irq, INTR_TYPE_NET | INTR_MPSAFE, 439 NULL, iwi_intr, sc, &sc->sc_ih); 440 if (error != 0) { 441 device_printf(dev, "could not set up interrupt\n"); 442 goto fail; 443 } 444 445 if (bootverbose) 446 ieee80211_announce(ic); 447 448 return 0; 449fail: 450 /* XXX fix */ 451 iwi_detach(dev); 452 return ENXIO; 453} 454 455static int 456iwi_detach(device_t dev) 457{ 458 struct iwi_softc *sc = device_get_softc(dev); 459 struct ifnet *ifp = sc->sc_ifp; 460 struct ieee80211com *ic = ifp->if_l2com; 461 462 /* NB: do early to drain any pending tasks */ 463 ieee80211_draintask(ic, &sc->sc_radiontask); 464 ieee80211_draintask(ic, &sc->sc_radiofftask); 465 ieee80211_draintask(ic, &sc->sc_restarttask); 466 ieee80211_draintask(ic, &sc->sc_disassoctask); 467 468 iwi_stop(sc); 469 470 bpfdetach(ifp); 471 ieee80211_ifdetach(ic); 472 473 iwi_put_firmware(sc); 474 iwi_release_fw_dma(sc); 475 476 iwi_free_cmd_ring(sc, &sc->cmdq); 477 iwi_free_tx_ring(sc, &sc->txq[0]); 478 iwi_free_tx_ring(sc, &sc->txq[1]); 479 iwi_free_tx_ring(sc, &sc->txq[2]); 480 iwi_free_tx_ring(sc, &sc->txq[3]); 481 iwi_free_rx_ring(sc, &sc->rxq); 482 483 bus_teardown_intr(dev, sc->irq, sc->sc_ih); 484 bus_release_resource(dev, SYS_RES_IRQ, sc->irq_rid, sc->irq); 485 486 bus_release_resource(dev, SYS_RES_MEMORY, sc->mem_rid, sc->mem); 487 488 delete_unrhdr(sc->sc_unr); 489 490 IWI_LOCK_DESTROY(sc); 491 492 if_free(ifp); 493 494 return 0; 495} 496 497static struct ieee80211vap * 498iwi_vap_create(struct ieee80211com *ic, 499 const char name[IFNAMSIZ], int unit, int opmode, int flags, 500 const uint8_t bssid[IEEE80211_ADDR_LEN], 501 const uint8_t mac[IEEE80211_ADDR_LEN]) 502{ 503 struct ifnet *ifp = ic->ic_ifp; 504 struct iwi_softc *sc = ifp->if_softc; 505 struct iwi_vap *ivp; 506 struct ieee80211vap *vap; 507 int i; 508 509 if (!TAILQ_EMPTY(&ic->ic_vaps)) /* only one at a time */ 510 return NULL; 511 /* 512 * Get firmware image (and possibly dma memory) on mode change. 513 */ 514 if (iwi_get_firmware(sc, opmode)) 515 return NULL; 516 /* allocate DMA memory for mapping firmware image */ 517 i = sc->fw_fw.size; 518 if (sc->fw_boot.size > i) 519 i = sc->fw_boot.size; 520 /* XXX do we dma the ucode as well ? */ 521 if (sc->fw_uc.size > i) 522 i = sc->fw_uc.size; 523 if (iwi_init_fw_dma(sc, i)) 524 return NULL; 525 526 ivp = (struct iwi_vap *) malloc(sizeof(struct iwi_vap), 527 M_80211_VAP, M_NOWAIT | M_ZERO); 528 if (ivp == NULL) 529 return NULL; 530 vap = &ivp->iwi_vap; 531 ieee80211_vap_setup(ic, vap, name, unit, opmode, flags, bssid, mac); 532 /* override the default, the setting comes from the linux driver */ 533 vap->iv_bmissthreshold = 24; 534 /* override with driver methods */ 535 ivp->iwi_newstate = vap->iv_newstate; 536 vap->iv_newstate = iwi_newstate; 537 538 /* complete setup */ 539 ieee80211_vap_attach(vap, ieee80211_media_change, iwi_media_status); 540 ic->ic_opmode = opmode; 541 return vap; 542} 543 544static void 545iwi_vap_delete(struct ieee80211vap *vap) 546{ 547 struct iwi_vap *ivp = IWI_VAP(vap); 548 549 ieee80211_vap_detach(vap); 550 free(ivp, M_80211_VAP); 551} 552 553static void 554iwi_dma_map_addr(void *arg, bus_dma_segment_t *segs, int nseg, int error) 555{ 556 if (error != 0) 557 return; 558 559 KASSERT(nseg == 1, ("too many DMA segments, %d should be 1", nseg)); 560 561 *(bus_addr_t *)arg = segs[0].ds_addr; 562} 563 564static int 565iwi_alloc_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring, int count) 566{ 567 int error; 568 569 ring->count = count; 570 ring->queued = 0; 571 ring->cur = ring->next = 0; 572 573 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 574 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 575 count * IWI_CMD_DESC_SIZE, 1, count * IWI_CMD_DESC_SIZE, 0, 576 NULL, NULL, &ring->desc_dmat); 577 if (error != 0) { 578 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 579 goto fail; 580 } 581 582 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 583 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 584 if (error != 0) { 585 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 586 goto fail; 587 } 588 589 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 590 count * IWI_CMD_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 591 if (error != 0) { 592 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 593 goto fail; 594 } 595 596 return 0; 597 598fail: iwi_free_cmd_ring(sc, ring); 599 return error; 600} 601 602static void 603iwi_reset_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 604{ 605 ring->queued = 0; 606 ring->cur = ring->next = 0; 607} 608 609static void 610iwi_free_cmd_ring(struct iwi_softc *sc, struct iwi_cmd_ring *ring) 611{ 612 if (ring->desc != NULL) { 613 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 614 BUS_DMASYNC_POSTWRITE); 615 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 616 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 617 } 618 619 if (ring->desc_dmat != NULL) 620 bus_dma_tag_destroy(ring->desc_dmat); 621} 622 623static int 624iwi_alloc_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring, int count, 625 bus_addr_t csr_ridx, bus_addr_t csr_widx) 626{ 627 int i, error; 628 629 ring->count = count; 630 ring->queued = 0; 631 ring->cur = ring->next = 0; 632 ring->csr_ridx = csr_ridx; 633 ring->csr_widx = csr_widx; 634 635 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 636 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 637 count * IWI_TX_DESC_SIZE, 1, count * IWI_TX_DESC_SIZE, 0, NULL, 638 NULL, &ring->desc_dmat); 639 if (error != 0) { 640 device_printf(sc->sc_dev, "could not create desc DMA tag\n"); 641 goto fail; 642 } 643 644 error = bus_dmamem_alloc(ring->desc_dmat, (void **)&ring->desc, 645 BUS_DMA_NOWAIT | BUS_DMA_ZERO, &ring->desc_map); 646 if (error != 0) { 647 device_printf(sc->sc_dev, "could not allocate DMA memory\n"); 648 goto fail; 649 } 650 651 error = bus_dmamap_load(ring->desc_dmat, ring->desc_map, ring->desc, 652 count * IWI_TX_DESC_SIZE, iwi_dma_map_addr, &ring->physaddr, 0); 653 if (error != 0) { 654 device_printf(sc->sc_dev, "could not load desc DMA map\n"); 655 goto fail; 656 } 657 658 ring->data = malloc(count * sizeof (struct iwi_tx_data), M_DEVBUF, 659 M_NOWAIT | M_ZERO); 660 if (ring->data == NULL) { 661 device_printf(sc->sc_dev, "could not allocate soft data\n"); 662 error = ENOMEM; 663 goto fail; 664 } 665 666 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 667 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 668 IWI_MAX_NSEG, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 669 if (error != 0) { 670 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 671 goto fail; 672 } 673 674 for (i = 0; i < count; i++) { 675 error = bus_dmamap_create(ring->data_dmat, 0, 676 &ring->data[i].map); 677 if (error != 0) { 678 device_printf(sc->sc_dev, "could not create DMA map\n"); 679 goto fail; 680 } 681 } 682 683 return 0; 684 685fail: iwi_free_tx_ring(sc, ring); 686 return error; 687} 688 689static void 690iwi_reset_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 691{ 692 struct iwi_tx_data *data; 693 int i; 694 695 for (i = 0; i < ring->count; i++) { 696 data = &ring->data[i]; 697 698 if (data->m != NULL) { 699 bus_dmamap_sync(ring->data_dmat, data->map, 700 BUS_DMASYNC_POSTWRITE); 701 bus_dmamap_unload(ring->data_dmat, data->map); 702 m_freem(data->m); 703 data->m = NULL; 704 } 705 706 if (data->ni != NULL) { 707 ieee80211_free_node(data->ni); 708 data->ni = NULL; 709 } 710 } 711 712 ring->queued = 0; 713 ring->cur = ring->next = 0; 714} 715 716static void 717iwi_free_tx_ring(struct iwi_softc *sc, struct iwi_tx_ring *ring) 718{ 719 struct iwi_tx_data *data; 720 int i; 721 722 if (ring->desc != NULL) { 723 bus_dmamap_sync(ring->desc_dmat, ring->desc_map, 724 BUS_DMASYNC_POSTWRITE); 725 bus_dmamap_unload(ring->desc_dmat, ring->desc_map); 726 bus_dmamem_free(ring->desc_dmat, ring->desc, ring->desc_map); 727 } 728 729 if (ring->desc_dmat != NULL) 730 bus_dma_tag_destroy(ring->desc_dmat); 731 732 if (ring->data != NULL) { 733 for (i = 0; i < ring->count; i++) { 734 data = &ring->data[i]; 735 736 if (data->m != NULL) { 737 bus_dmamap_sync(ring->data_dmat, data->map, 738 BUS_DMASYNC_POSTWRITE); 739 bus_dmamap_unload(ring->data_dmat, data->map); 740 m_freem(data->m); 741 } 742 743 if (data->ni != NULL) 744 ieee80211_free_node(data->ni); 745 746 if (data->map != NULL) 747 bus_dmamap_destroy(ring->data_dmat, data->map); 748 } 749 750 free(ring->data, M_DEVBUF); 751 } 752 753 if (ring->data_dmat != NULL) 754 bus_dma_tag_destroy(ring->data_dmat); 755} 756 757static int 758iwi_alloc_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring, int count) 759{ 760 struct iwi_rx_data *data; 761 int i, error; 762 763 ring->count = count; 764 ring->cur = 0; 765 766 ring->data = malloc(count * sizeof (struct iwi_rx_data), M_DEVBUF, 767 M_NOWAIT | M_ZERO); 768 if (ring->data == NULL) { 769 device_printf(sc->sc_dev, "could not allocate soft data\n"); 770 error = ENOMEM; 771 goto fail; 772 } 773 774 error = bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 1, 0, 775 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, MCLBYTES, 776 1, MCLBYTES, 0, NULL, NULL, &ring->data_dmat); 777 if (error != 0) { 778 device_printf(sc->sc_dev, "could not create data DMA tag\n"); 779 goto fail; 780 } 781 782 for (i = 0; i < count; i++) { 783 data = &ring->data[i]; 784 785 error = bus_dmamap_create(ring->data_dmat, 0, &data->map); 786 if (error != 0) { 787 device_printf(sc->sc_dev, "could not create DMA map\n"); 788 goto fail; 789 } 790 791 data->m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 792 if (data->m == NULL) { 793 device_printf(sc->sc_dev, 794 "could not allocate rx mbuf\n"); 795 error = ENOMEM; 796 goto fail; 797 } 798 799 error = bus_dmamap_load(ring->data_dmat, data->map, 800 mtod(data->m, void *), MCLBYTES, iwi_dma_map_addr, 801 &data->physaddr, 0); 802 if (error != 0) { 803 device_printf(sc->sc_dev, 804 "could not load rx buf DMA map"); 805 goto fail; 806 } 807 808 data->reg = IWI_CSR_RX_BASE + i * 4; 809 } 810 811 return 0; 812 813fail: iwi_free_rx_ring(sc, ring); 814 return error; 815} 816 817static void 818iwi_reset_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 819{ 820 ring->cur = 0; 821} 822 823static void 824iwi_free_rx_ring(struct iwi_softc *sc, struct iwi_rx_ring *ring) 825{ 826 struct iwi_rx_data *data; 827 int i; 828 829 if (ring->data != NULL) { 830 for (i = 0; i < ring->count; i++) { 831 data = &ring->data[i]; 832 833 if (data->m != NULL) { 834 bus_dmamap_sync(ring->data_dmat, data->map, 835 BUS_DMASYNC_POSTREAD); 836 bus_dmamap_unload(ring->data_dmat, data->map); 837 m_freem(data->m); 838 } 839 840 if (data->map != NULL) 841 bus_dmamap_destroy(ring->data_dmat, data->map); 842 } 843 844 free(ring->data, M_DEVBUF); 845 } 846 847 if (ring->data_dmat != NULL) 848 bus_dma_tag_destroy(ring->data_dmat); 849} 850 851static int 852iwi_shutdown(device_t dev) 853{ 854 struct iwi_softc *sc = device_get_softc(dev); 855 856 iwi_stop(sc); 857 iwi_put_firmware(sc); /* ??? XXX */ 858 859 return 0; 860} 861 862static int 863iwi_suspend(device_t dev) 864{ 865 struct iwi_softc *sc = device_get_softc(dev); 866 867 iwi_stop(sc); 868 869 return 0; 870} 871 872static int 873iwi_resume(device_t dev) 874{ 875 struct iwi_softc *sc = device_get_softc(dev); 876 struct ifnet *ifp = sc->sc_ifp; 877 878 pci_write_config(dev, 0x41, 0, 1); 879 880 if (ifp->if_flags & IFF_UP) 881 iwi_init(sc); 882 883 return 0; 884} 885 886static struct ieee80211_node * 887iwi_node_alloc(struct ieee80211vap *vap, const uint8_t mac[IEEE80211_ADDR_LEN]) 888{ 889 struct iwi_node *in; 890 891 in = malloc(sizeof (struct iwi_node), M_80211_NODE, M_NOWAIT | M_ZERO); 892 if (in == NULL) 893 return NULL; 894 /* XXX assign sta table entry for adhoc */ 895 in->in_station = -1; 896 897 return &in->in_node; 898} 899 900static void 901iwi_node_free(struct ieee80211_node *ni) 902{ 903 struct ieee80211com *ic = ni->ni_ic; 904 struct iwi_softc *sc = ic->ic_ifp->if_softc; 905 struct iwi_node *in = (struct iwi_node *)ni; 906 907 if (in->in_station != -1) { 908 DPRINTF(("%s mac %6D station %u\n", __func__, 909 ni->ni_macaddr, ":", in->in_station)); 910 free_unr(sc->sc_unr, in->in_station); 911 } 912 913 sc->sc_node_free(ni); 914} 915 916/* 917 * Convert h/w rate code to IEEE rate code. 918 */ 919static int 920iwi_cvtrate(int iwirate) 921{ 922 switch (iwirate) { 923 case IWI_RATE_DS1: return 2; 924 case IWI_RATE_DS2: return 4; 925 case IWI_RATE_DS5: return 11; 926 case IWI_RATE_DS11: return 22; 927 case IWI_RATE_OFDM6: return 12; 928 case IWI_RATE_OFDM9: return 18; 929 case IWI_RATE_OFDM12: return 24; 930 case IWI_RATE_OFDM18: return 36; 931 case IWI_RATE_OFDM24: return 48; 932 case IWI_RATE_OFDM36: return 72; 933 case IWI_RATE_OFDM48: return 96; 934 case IWI_RATE_OFDM54: return 108; 935 } 936 return 0; 937} 938 939/* 940 * The firmware automatically adapts the transmit speed. We report its current 941 * value here. 942 */ 943static void 944iwi_media_status(struct ifnet *ifp, struct ifmediareq *imr) 945{ 946 struct ieee80211vap *vap = ifp->if_softc; 947 struct ieee80211com *ic = vap->iv_ic; 948 struct iwi_softc *sc = ic->ic_ifp->if_softc; 949 950 /* read current transmission rate from adapter */ 951 vap->iv_bss->ni_txrate = 952 iwi_cvtrate(CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE)); 953 ieee80211_media_status(ifp, imr); 954} 955 956static int 957iwi_newstate(struct ieee80211vap *vap, enum ieee80211_state nstate, int arg) 958{ 959 struct iwi_vap *ivp = IWI_VAP(vap); 960 struct ieee80211com *ic = vap->iv_ic; 961 struct ifnet *ifp = ic->ic_ifp; 962 struct iwi_softc *sc = ifp->if_softc; 963 IWI_LOCK_DECL; 964 965 DPRINTF(("%s: %s -> %s flags 0x%x\n", __func__, 966 ieee80211_state_name[vap->iv_state], 967 ieee80211_state_name[nstate], sc->flags)); 968 969 IEEE80211_UNLOCK(ic); 970 IWI_LOCK(sc); 971 switch (nstate) { 972 case IEEE80211_S_INIT: 973 /* 974 * NB: don't try to do this if iwi_stop_master has 975 * shutdown the firmware and disabled interrupts. 976 */ 977 if (vap->iv_state == IEEE80211_S_RUN && 978 (sc->flags & IWI_FLAG_FW_INITED)) 979 iwi_disassociate(sc, 0); 980 break; 981 case IEEE80211_S_AUTH: 982 iwi_auth_and_assoc(sc, vap); 983 break; 984 case IEEE80211_S_RUN: 985 if (vap->iv_opmode == IEEE80211_M_IBSS && 986 vap->iv_state == IEEE80211_S_SCAN) { 987 /* 988 * XXX when joining an ibss network we are called 989 * with a SCAN -> RUN transition on scan complete. 990 * Use that to call iwi_auth_and_assoc. On completing 991 * the join we are then called again with an 992 * AUTH -> RUN transition and we want to do nothing. 993 * This is all totally bogus and needs to be redone. 994 */ 995 iwi_auth_and_assoc(sc, vap); 996 } 997 break; 998 case IEEE80211_S_ASSOC: 999 /* 1000 * If we are transitioning from AUTH then just wait 1001 * for the ASSOC status to come back from the firmware. 1002 * Otherwise we need to issue the association request. 1003 */ 1004 if (vap->iv_state == IEEE80211_S_AUTH) 1005 break; 1006 iwi_auth_and_assoc(sc, vap); 1007 break; 1008 default: 1009 break; 1010 } 1011 IWI_UNLOCK(sc); 1012 IEEE80211_LOCK(ic); 1013 return ivp->iwi_newstate(vap, nstate, arg); 1014} 1015 1016/* 1017 * WME parameters coming from IEEE 802.11e specification. These values are 1018 * already declared in ieee80211_proto.c, but they are static so they can't 1019 * be reused here. 1020 */ 1021static const struct wmeParams iwi_wme_cck_params[WME_NUM_AC] = { 1022 { 0, 3, 5, 7, 0 }, /* WME_AC_BE */ 1023 { 0, 3, 5, 10, 0 }, /* WME_AC_BK */ 1024 { 0, 2, 4, 5, 188 }, /* WME_AC_VI */ 1025 { 0, 2, 3, 4, 102 } /* WME_AC_VO */ 1026}; 1027 1028static const struct wmeParams iwi_wme_ofdm_params[WME_NUM_AC] = { 1029 { 0, 3, 4, 6, 0 }, /* WME_AC_BE */ 1030 { 0, 3, 4, 10, 0 }, /* WME_AC_BK */ 1031 { 0, 2, 3, 4, 94 }, /* WME_AC_VI */ 1032 { 0, 2, 2, 3, 47 } /* WME_AC_VO */ 1033}; 1034#define IWI_EXP2(v) htole16((1 << (v)) - 1) 1035#define IWI_USEC(v) htole16(IEEE80211_TXOP_TO_US(v)) 1036 1037static void 1038iwi_wme_init(struct iwi_softc *sc) 1039{ 1040 const struct wmeParams *wmep; 1041 int ac; 1042 1043 memset(sc->wme, 0, sizeof sc->wme); 1044 for (ac = 0; ac < WME_NUM_AC; ac++) { 1045 /* set WME values for CCK modulation */ 1046 wmep = &iwi_wme_cck_params[ac]; 1047 sc->wme[1].aifsn[ac] = wmep->wmep_aifsn; 1048 sc->wme[1].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1049 sc->wme[1].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1050 sc->wme[1].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1051 sc->wme[1].acm[ac] = wmep->wmep_acm; 1052 1053 /* set WME values for OFDM modulation */ 1054 wmep = &iwi_wme_ofdm_params[ac]; 1055 sc->wme[2].aifsn[ac] = wmep->wmep_aifsn; 1056 sc->wme[2].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1057 sc->wme[2].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1058 sc->wme[2].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1059 sc->wme[2].acm[ac] = wmep->wmep_acm; 1060 } 1061} 1062 1063static int 1064iwi_wme_setparams(struct iwi_softc *sc, struct ieee80211com *ic) 1065{ 1066 const struct wmeParams *wmep; 1067 int ac; 1068 1069 for (ac = 0; ac < WME_NUM_AC; ac++) { 1070 /* set WME values for current operating mode */ 1071 wmep = &ic->ic_wme.wme_chanParams.cap_wmeParams[ac]; 1072 sc->wme[0].aifsn[ac] = wmep->wmep_aifsn; 1073 sc->wme[0].cwmin[ac] = IWI_EXP2(wmep->wmep_logcwmin); 1074 sc->wme[0].cwmax[ac] = IWI_EXP2(wmep->wmep_logcwmax); 1075 sc->wme[0].burst[ac] = IWI_USEC(wmep->wmep_txopLimit); 1076 sc->wme[0].acm[ac] = wmep->wmep_acm; 1077 } 1078 1079 DPRINTF(("Setting WME parameters\n")); 1080 return iwi_cmd(sc, IWI_CMD_SET_WME_PARAMS, sc->wme, sizeof sc->wme); 1081} 1082#undef IWI_USEC 1083#undef IWI_EXP2 1084 1085static int 1086iwi_wme_update(struct ieee80211com *ic) 1087{ 1088 struct iwi_softc *sc = ic->ic_ifp->if_softc; 1089 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1090 1091 /* 1092 * We may be called to update the WME parameters in 1093 * the adapter at various places. If we're already 1094 * associated then initiate the request immediately 1095 * (via the taskqueue); otherwise we assume the params 1096 * will get sent down to the adapter as part of the 1097 * work iwi_auth_and_assoc does. 1098 */ 1099 if (vap->iv_state == IEEE80211_S_RUN) 1100 (void) iwi_wme_setparams(sc, ic); 1101 return (0); 1102} 1103 1104static int 1105iwi_wme_setie(struct iwi_softc *sc) 1106{ 1107 struct ieee80211_wme_info wme; 1108 1109 memset(&wme, 0, sizeof wme); 1110 wme.wme_id = IEEE80211_ELEMID_VENDOR; 1111 wme.wme_len = sizeof (struct ieee80211_wme_info) - 2; 1112 wme.wme_oui[0] = 0x00; 1113 wme.wme_oui[1] = 0x50; 1114 wme.wme_oui[2] = 0xf2; 1115 wme.wme_type = WME_OUI_TYPE; 1116 wme.wme_subtype = WME_INFO_OUI_SUBTYPE; 1117 wme.wme_version = WME_VERSION; 1118 wme.wme_info = 0; 1119 1120 DPRINTF(("Setting WME IE (len=%u)\n", wme.wme_len)); 1121 return iwi_cmd(sc, IWI_CMD_SET_WMEIE, &wme, sizeof wme); 1122} 1123 1124/* 1125 * Read 16 bits at address 'addr' from the serial EEPROM. 1126 */ 1127static uint16_t 1128iwi_read_prom_word(struct iwi_softc *sc, uint8_t addr) 1129{ 1130 uint32_t tmp; 1131 uint16_t val; 1132 int n; 1133 1134 /* clock C once before the first command */ 1135 IWI_EEPROM_CTL(sc, 0); 1136 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1137 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1138 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1139 1140 /* write start bit (1) */ 1141 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1142 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1143 1144 /* write READ opcode (10) */ 1145 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D); 1146 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_D | IWI_EEPROM_C); 1147 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1148 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1149 1150 /* write address A7-A0 */ 1151 for (n = 7; n >= 0; n--) { 1152 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1153 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D)); 1154 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | 1155 (((addr >> n) & 1) << IWI_EEPROM_SHIFT_D) | IWI_EEPROM_C); 1156 } 1157 1158 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1159 1160 /* read data Q15-Q0 */ 1161 val = 0; 1162 for (n = 15; n >= 0; n--) { 1163 IWI_EEPROM_CTL(sc, IWI_EEPROM_S | IWI_EEPROM_C); 1164 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1165 tmp = MEM_READ_4(sc, IWI_MEM_EEPROM_CTL); 1166 val |= ((tmp & IWI_EEPROM_Q) >> IWI_EEPROM_SHIFT_Q) << n; 1167 } 1168 1169 IWI_EEPROM_CTL(sc, 0); 1170 1171 /* clear Chip Select and clock C */ 1172 IWI_EEPROM_CTL(sc, IWI_EEPROM_S); 1173 IWI_EEPROM_CTL(sc, 0); 1174 IWI_EEPROM_CTL(sc, IWI_EEPROM_C); 1175 1176 return val; 1177} 1178 1179static void 1180iwi_setcurchan(struct iwi_softc *sc, int chan) 1181{ 1182 struct ifnet *ifp = sc->sc_ifp; 1183 struct ieee80211com *ic = ifp->if_l2com; 1184 1185 sc->curchan = chan; 1186 1187 sc->sc_rxtap.wr_chan_freq = sc->sc_txtap.wt_chan_freq = 1188 htole16(ic->ic_curchan->ic_freq); 1189 sc->sc_rxtap.wr_chan_flags = sc->sc_txtap.wt_chan_flags = 1190 htole16(ic->ic_curchan->ic_flags); 1191} 1192 1193static void 1194iwi_frame_intr(struct iwi_softc *sc, struct iwi_rx_data *data, int i, 1195 struct iwi_frame *frame) 1196{ 1197 struct ifnet *ifp = sc->sc_ifp; 1198 struct ieee80211com *ic = ifp->if_l2com; 1199 struct mbuf *mnew, *m; 1200 struct ieee80211_node *ni; 1201 int type, error, framelen; 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_DONTWAIT, 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 if (bpf_peers_present(ifp->if_bpf)) { 1274 struct iwi_rx_radiotap_header *tap = &sc->sc_rxtap; 1275 1276 tap->wr_flags = 0; 1277 tap->wr_rate = iwi_cvtrate(frame->rate); 1278 tap->wr_antsignal = frame->signal; 1279 tap->wr_antenna = frame->antenna; 1280 1281 bpf_mtap2(ifp->if_bpf, tap, sc->sc_rxtap_len, m); 1282 } 1283 IWI_UNLOCK(sc); 1284 1285 ni = ieee80211_find_rxnode(ic, mtod(m, struct ieee80211_frame_min *)); 1286 if (ni != NULL) { 1287 type = ieee80211_input(ni, m, frame->rssi_dbm, 0, 0); 1288 ieee80211_free_node(ni); 1289 } else 1290 type = ieee80211_input_all(ic, m, frame->rssi_dbm, 0, 0); 1291 1292 IWI_LOCK(sc); 1293 if (sc->sc_softled) { 1294 /* 1295 * Blink for any data frame. Otherwise do a 1296 * heartbeat-style blink when idle. The latter 1297 * is mainly for station mode where we depend on 1298 * periodic beacon frames to trigger the poll event. 1299 */ 1300 if (type == IEEE80211_FC0_TYPE_DATA) { 1301 sc->sc_rxrate = frame->rate; 1302 iwi_led_event(sc, IWI_LED_RX); 1303 } else if (ticks - sc->sc_ledevent >= sc->sc_ledidle) 1304 iwi_led_event(sc, IWI_LED_POLL); 1305 } 1306} 1307 1308/* 1309 * Check for an association response frame to see if QoS 1310 * has been negotiated. We parse just enough to figure 1311 * out if we're supposed to use QoS. The proper solution 1312 * is to pass the frame up so ieee80211_input can do the 1313 * work but that's made hard by how things currently are 1314 * done in the driver. 1315 */ 1316static void 1317iwi_checkforqos(struct ieee80211vap *vap, 1318 const struct ieee80211_frame *wh, int len) 1319{ 1320#define SUBTYPE(wh) ((wh)->i_fc[0] & IEEE80211_FC0_SUBTYPE_MASK) 1321 const uint8_t *frm, *efrm, *wme; 1322 struct ieee80211_node *ni; 1323 uint16_t capinfo, status, associd; 1324 1325 /* NB: +8 for capinfo, status, associd, and first ie */ 1326 if (!(sizeof(*wh)+8 < len && len < IEEE80211_MAX_LEN) || 1327 SUBTYPE(wh) != IEEE80211_FC0_SUBTYPE_ASSOC_RESP) 1328 return; 1329 /* 1330 * asresp frame format 1331 * [2] capability information 1332 * [2] status 1333 * [2] association ID 1334 * [tlv] supported rates 1335 * [tlv] extended supported rates 1336 * [tlv] WME 1337 */ 1338 frm = (const uint8_t *)&wh[1]; 1339 efrm = ((const uint8_t *) wh) + len; 1340 1341 capinfo = le16toh(*(const uint16_t *)frm); 1342 frm += 2; 1343 status = le16toh(*(const uint16_t *)frm); 1344 frm += 2; 1345 associd = le16toh(*(const uint16_t *)frm); 1346 frm += 2; 1347 1348 wme = NULL; 1349 while (frm < efrm) { 1350 IEEE80211_VERIFY_LENGTH(efrm - frm, frm[1], return); 1351 switch (*frm) { 1352 case IEEE80211_ELEMID_VENDOR: 1353 if (iswmeoui(frm)) 1354 wme = frm; 1355 break; 1356 } 1357 frm += frm[1] + 2; 1358 } 1359 1360 ni = vap->iv_bss; 1361 ni->ni_capinfo = capinfo; 1362 ni->ni_associd = associd; 1363 if (wme != NULL) 1364 ni->ni_flags |= IEEE80211_NODE_QOS; 1365 else 1366 ni->ni_flags &= ~IEEE80211_NODE_QOS; 1367#undef SUBTYPE 1368} 1369 1370/* 1371 * Task queue callbacks for iwi_notification_intr used to avoid LOR's. 1372 */ 1373 1374static void 1375iwi_notification_intr(struct iwi_softc *sc, struct iwi_notif *notif) 1376{ 1377 struct ifnet *ifp = sc->sc_ifp; 1378 struct ieee80211com *ic = ifp->if_l2com; 1379 struct ieee80211vap *vap = TAILQ_FIRST(&ic->ic_vaps); 1380 struct iwi_notif_scan_channel *chan; 1381 struct iwi_notif_scan_complete *scan; 1382 struct iwi_notif_authentication *auth; 1383 struct iwi_notif_association *assoc; 1384 struct iwi_notif_beacon_state *beacon; 1385 1386 switch (notif->type) { 1387 case IWI_NOTIF_TYPE_SCAN_CHANNEL: 1388 chan = (struct iwi_notif_scan_channel *)(notif + 1); 1389 1390 DPRINTFN(3, ("Scan of channel %u complete (%u)\n", 1391 ieee80211_ieee2mhz(chan->nchan, 0), chan->nchan)); 1392 1393 /* Reset the timer, the scan is still going */ 1394 sc->sc_state_timer = 3; 1395 break; 1396 1397 case IWI_NOTIF_TYPE_SCAN_COMPLETE: 1398 scan = (struct iwi_notif_scan_complete *)(notif + 1); 1399 1400 DPRINTFN(2, ("Scan completed (%u, %u)\n", scan->nchan, 1401 scan->status)); 1402 1403 IWI_STATE_END(sc, IWI_FW_SCANNING); 1404 1405 if (scan->status == IWI_SCAN_COMPLETED) { 1406 /* NB: don't need to defer, net80211 does it for us */ 1407 ieee80211_scan_next(vap); 1408 } 1409 break; 1410 1411 case IWI_NOTIF_TYPE_AUTHENTICATION: 1412 auth = (struct iwi_notif_authentication *)(notif + 1); 1413 switch (auth->state) { 1414 case IWI_AUTH_SUCCESS: 1415 DPRINTFN(2, ("Authentication succeeeded\n")); 1416 ieee80211_new_state(vap, IEEE80211_S_ASSOC, -1); 1417 break; 1418 case IWI_AUTH_FAIL: 1419 /* 1420 * These are delivered as an unsolicited deauth 1421 * (e.g. due to inactivity) or in response to an 1422 * associate request. 1423 */ 1424 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1425 if (vap->iv_state != IEEE80211_S_RUN) { 1426 DPRINTFN(2, ("Authentication failed\n")); 1427 vap->iv_stats.is_rx_auth_fail++; 1428 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1429 } else { 1430 DPRINTFN(2, ("Deauthenticated\n")); 1431 vap->iv_stats.is_rx_deauth++; 1432 } 1433 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1434 break; 1435 case IWI_AUTH_SENT_1: 1436 case IWI_AUTH_RECV_2: 1437 case IWI_AUTH_SEQ1_PASS: 1438 break; 1439 case IWI_AUTH_SEQ1_FAIL: 1440 DPRINTFN(2, ("Initial authentication handshake failed; " 1441 "you probably need shared key\n")); 1442 vap->iv_stats.is_rx_auth_fail++; 1443 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1444 /* XXX retry shared key when in auto */ 1445 break; 1446 default: 1447 device_printf(sc->sc_dev, 1448 "unknown authentication state %u\n", auth->state); 1449 break; 1450 } 1451 break; 1452 1453 case IWI_NOTIF_TYPE_ASSOCIATION: 1454 assoc = (struct iwi_notif_association *)(notif + 1); 1455 switch (assoc->state) { 1456 case IWI_AUTH_SUCCESS: 1457 /* re-association, do nothing */ 1458 break; 1459 case IWI_ASSOC_SUCCESS: 1460 DPRINTFN(2, ("Association succeeded\n")); 1461 sc->flags |= IWI_FLAG_ASSOCIATED; 1462 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1463 iwi_checkforqos(vap, 1464 (const struct ieee80211_frame *)(assoc+1), 1465 le16toh(notif->len) - sizeof(*assoc)); 1466 ieee80211_new_state(vap, IEEE80211_S_RUN, -1); 1467 break; 1468 case IWI_ASSOC_INIT: 1469 sc->flags &= ~IWI_FLAG_ASSOCIATED; 1470 switch (sc->fw_state) { 1471 case IWI_FW_ASSOCIATING: 1472 DPRINTFN(2, ("Association failed\n")); 1473 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 1474 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1475 break; 1476 1477 case IWI_FW_DISASSOCIATING: 1478 DPRINTFN(2, ("Dissassociated\n")); 1479 IWI_STATE_END(sc, IWI_FW_DISASSOCIATING); 1480 vap->iv_stats.is_rx_disassoc++; 1481 ieee80211_new_state(vap, IEEE80211_S_SCAN, -1); 1482 break; 1483 } 1484 break; 1485 default: 1486 device_printf(sc->sc_dev, 1487 "unknown association state %u\n", assoc->state); 1488 break; 1489 } 1490 break; 1491 1492 case IWI_NOTIF_TYPE_BEACON: 1493 /* XXX check struct length */ 1494 beacon = (struct iwi_notif_beacon_state *)(notif + 1); 1495 1496 DPRINTFN(5, ("Beacon state (%u, %u)\n", 1497 beacon->state, le32toh(beacon->number))); 1498 1499 if (beacon->state == IWI_BEACON_MISS) { 1500 /* 1501 * The firmware notifies us of every beacon miss 1502 * so we need to track the count against the 1503 * configured threshold before notifying the 1504 * 802.11 layer. 1505 * XXX try to roam, drop assoc only on much higher count 1506 */ 1507 if (le32toh(beacon->number) >= vap->iv_bmissthreshold) { 1508 DPRINTF(("Beacon miss: %u >= %u\n", 1509 le32toh(beacon->number), 1510 vap->iv_bmissthreshold)); 1511 vap->iv_stats.is_beacon_miss++; 1512 /* 1513 * It's pointless to notify the 802.11 layer 1514 * as it'll try to send a probe request (which 1515 * we'll discard) and then timeout and drop us 1516 * into scan state. Instead tell the firmware 1517 * to disassociate and then on completion we'll 1518 * kick the state machine to scan. 1519 */ 1520 ieee80211_runtask(ic, &sc->sc_disassoctask); 1521 } 1522 } 1523 break; 1524 1525 case IWI_NOTIF_TYPE_CALIBRATION: 1526 case IWI_NOTIF_TYPE_NOISE: 1527 case IWI_NOTIF_TYPE_LINK_QUALITY: 1528 DPRINTFN(5, ("Notification (%u)\n", notif->type)); 1529 break; 1530 1531 default: 1532 DPRINTF(("unknown notification type %u flags 0x%x len %u\n", 1533 notif->type, notif->flags, le16toh(notif->len))); 1534 break; 1535 } 1536} 1537 1538static void 1539iwi_rx_intr(struct iwi_softc *sc) 1540{ 1541 struct iwi_rx_data *data; 1542 struct iwi_hdr *hdr; 1543 uint32_t hw; 1544 1545 hw = CSR_READ_4(sc, IWI_CSR_RX_RIDX); 1546 1547 for (; sc->rxq.cur != hw;) { 1548 data = &sc->rxq.data[sc->rxq.cur]; 1549 1550 bus_dmamap_sync(sc->rxq.data_dmat, data->map, 1551 BUS_DMASYNC_POSTREAD); 1552 1553 hdr = mtod(data->m, struct iwi_hdr *); 1554 1555 switch (hdr->type) { 1556 case IWI_HDR_TYPE_FRAME: 1557 iwi_frame_intr(sc, data, sc->rxq.cur, 1558 (struct iwi_frame *)(hdr + 1)); 1559 break; 1560 1561 case IWI_HDR_TYPE_NOTIF: 1562 iwi_notification_intr(sc, 1563 (struct iwi_notif *)(hdr + 1)); 1564 break; 1565 1566 default: 1567 device_printf(sc->sc_dev, "unknown hdr type %u\n", 1568 hdr->type); 1569 } 1570 1571 DPRINTFN(15, ("rx done idx=%u\n", sc->rxq.cur)); 1572 1573 sc->rxq.cur = (sc->rxq.cur + 1) % IWI_RX_RING_COUNT; 1574 } 1575 1576 /* tell the firmware what we have processed */ 1577 hw = (hw == 0) ? IWI_RX_RING_COUNT - 1 : hw - 1; 1578 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, hw); 1579} 1580 1581static void 1582iwi_tx_intr(struct iwi_softc *sc, struct iwi_tx_ring *txq) 1583{ 1584 struct ifnet *ifp = sc->sc_ifp; 1585 struct iwi_tx_data *data; 1586 uint32_t hw; 1587 1588 hw = CSR_READ_4(sc, txq->csr_ridx); 1589 1590 for (; txq->next != hw;) { 1591 data = &txq->data[txq->next]; 1592 1593 bus_dmamap_sync(txq->data_dmat, data->map, 1594 BUS_DMASYNC_POSTWRITE); 1595 bus_dmamap_unload(txq->data_dmat, data->map); 1596 if (data->m->m_flags & M_TXCB) 1597 ieee80211_process_callback(data->ni, data->m, 0/*XXX*/); 1598 m_freem(data->m); 1599 data->m = NULL; 1600 ieee80211_free_node(data->ni); 1601 data->ni = NULL; 1602 1603 DPRINTFN(15, ("tx done idx=%u\n", txq->next)); 1604 1605 ifp->if_opackets++; 1606 1607 txq->queued--; 1608 txq->next = (txq->next + 1) % IWI_TX_RING_COUNT; 1609 } 1610 1611 sc->sc_tx_timer = 0; 1612 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 1613 1614 if (sc->sc_softled) 1615 iwi_led_event(sc, IWI_LED_TX); 1616 1617 iwi_start_locked(ifp); 1618} 1619 1620static void 1621iwi_fatal_error_intr(struct iwi_softc *sc) 1622{ 1623 struct ifnet *ifp = sc->sc_ifp; 1624 struct ieee80211com *ic = ifp->if_l2com; 1625 1626 device_printf(sc->sc_dev, "firmware error\n"); 1627 ieee80211_runtask(ic, &sc->sc_restarttask); 1628 1629 sc->flags &= ~IWI_FLAG_BUSY; 1630 sc->sc_busy_timer = 0; 1631 wakeup(sc); 1632} 1633 1634static void 1635iwi_radio_off_intr(struct iwi_softc *sc) 1636{ 1637 struct ifnet *ifp = sc->sc_ifp; 1638 struct ieee80211com *ic = ifp->if_l2com; 1639 1640 ieee80211_runtask(ic, &sc->sc_radiofftask); 1641} 1642 1643static void 1644iwi_intr(void *arg) 1645{ 1646 struct iwi_softc *sc = arg; 1647 uint32_t r; 1648 IWI_LOCK_DECL; 1649 1650 IWI_LOCK(sc); 1651 1652 if ((r = CSR_READ_4(sc, IWI_CSR_INTR)) == 0 || r == 0xffffffff) { 1653 IWI_UNLOCK(sc); 1654 return; 1655 } 1656 1657 /* acknowledge interrupts */ 1658 CSR_WRITE_4(sc, IWI_CSR_INTR, r); 1659 1660 if (r & IWI_INTR_FATAL_ERROR) { 1661 iwi_fatal_error_intr(sc); 1662 goto done; 1663 } 1664 1665 if (r & IWI_INTR_FW_INITED) { 1666 if (!(r & (IWI_INTR_FATAL_ERROR | IWI_INTR_PARITY_ERROR))) 1667 wakeup(sc); 1668 } 1669 1670 if (r & IWI_INTR_RADIO_OFF) 1671 iwi_radio_off_intr(sc); 1672 1673 if (r & IWI_INTR_CMD_DONE) { 1674 sc->flags &= ~IWI_FLAG_BUSY; 1675 sc->sc_busy_timer = 0; 1676 wakeup(sc); 1677 } 1678 1679 if (r & IWI_INTR_TX1_DONE) 1680 iwi_tx_intr(sc, &sc->txq[0]); 1681 1682 if (r & IWI_INTR_TX2_DONE) 1683 iwi_tx_intr(sc, &sc->txq[1]); 1684 1685 if (r & IWI_INTR_TX3_DONE) 1686 iwi_tx_intr(sc, &sc->txq[2]); 1687 1688 if (r & IWI_INTR_TX4_DONE) 1689 iwi_tx_intr(sc, &sc->txq[3]); 1690 1691 if (r & IWI_INTR_RX_DONE) 1692 iwi_rx_intr(sc); 1693 1694 if (r & IWI_INTR_PARITY_ERROR) { 1695 /* XXX rate-limit */ 1696 device_printf(sc->sc_dev, "parity error\n"); 1697 } 1698done: 1699 IWI_UNLOCK(sc); 1700} 1701 1702static int 1703iwi_cmd(struct iwi_softc *sc, uint8_t type, void *data, uint8_t len) 1704{ 1705 struct iwi_cmd_desc *desc; 1706 1707 IWI_LOCK_ASSERT(sc); 1708 1709 if (sc->flags & IWI_FLAG_BUSY) { 1710 device_printf(sc->sc_dev, "%s: cmd %d not sent, busy\n", 1711 __func__, type); 1712 return EAGAIN; 1713 } 1714 sc->flags |= IWI_FLAG_BUSY; 1715 sc->sc_busy_timer = 2; 1716 1717 desc = &sc->cmdq.desc[sc->cmdq.cur]; 1718 1719 desc->hdr.type = IWI_HDR_TYPE_COMMAND; 1720 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1721 desc->type = type; 1722 desc->len = len; 1723 memcpy(desc->data, data, len); 1724 1725 bus_dmamap_sync(sc->cmdq.desc_dmat, sc->cmdq.desc_map, 1726 BUS_DMASYNC_PREWRITE); 1727 1728 DPRINTFN(2, ("sending command idx=%u type=%u len=%u\n", sc->cmdq.cur, 1729 type, len)); 1730 1731 sc->cmdq.cur = (sc->cmdq.cur + 1) % IWI_CMD_RING_COUNT; 1732 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 1733 1734 return msleep(sc, &sc->sc_mtx, 0, "iwicmd", hz); 1735} 1736 1737static void 1738iwi_write_ibssnode(struct iwi_softc *sc, 1739 const u_int8_t addr[IEEE80211_ADDR_LEN], int entry) 1740{ 1741 struct iwi_ibssnode node; 1742 1743 /* write node information into NIC memory */ 1744 memset(&node, 0, sizeof node); 1745 IEEE80211_ADDR_COPY(node.bssid, addr); 1746 1747 DPRINTF(("%s mac %6D station %u\n", __func__, node.bssid, ":", entry)); 1748 1749 CSR_WRITE_REGION_1(sc, 1750 IWI_CSR_NODE_BASE + entry * sizeof node, 1751 (uint8_t *)&node, sizeof node); 1752} 1753 1754static int 1755iwi_tx_start(struct ifnet *ifp, struct mbuf *m0, struct ieee80211_node *ni, 1756 int ac) 1757{ 1758 struct iwi_softc *sc = ifp->if_softc; 1759 struct ieee80211vap *vap = ni->ni_vap; 1760 struct ieee80211com *ic = ni->ni_ic; 1761 struct iwi_node *in = (struct iwi_node *)ni; 1762 const struct ieee80211_frame *wh; 1763 struct ieee80211_key *k; 1764 const struct chanAccParams *cap; 1765 struct iwi_tx_ring *txq = &sc->txq[ac]; 1766 struct iwi_tx_data *data; 1767 struct iwi_tx_desc *desc; 1768 struct mbuf *mnew; 1769 bus_dma_segment_t segs[IWI_MAX_NSEG]; 1770 int error, nsegs, hdrlen, i; 1771 int ismcast, flags, xflags, staid; 1772 1773 IWI_LOCK_ASSERT(sc); 1774 wh = mtod(m0, const struct ieee80211_frame *); 1775 /* NB: only data frames use this path */ 1776 hdrlen = ieee80211_hdrsize(wh); 1777 ismcast = IEEE80211_IS_MULTICAST(wh->i_addr1); 1778 flags = xflags = 0; 1779 1780 if (!ismcast) 1781 flags |= IWI_DATA_FLAG_NEED_ACK; 1782 if (vap->iv_flags & IEEE80211_F_SHPREAMBLE) 1783 flags |= IWI_DATA_FLAG_SHPREAMBLE; 1784 if (IEEE80211_QOS_HAS_SEQ(wh)) { 1785 xflags |= IWI_DATA_XFLAG_QOS; 1786 cap = &ic->ic_wme.wme_chanParams; 1787 if (!cap->cap_wmeParams[ac].wmep_noackPolicy) 1788 flags &= ~IWI_DATA_FLAG_NEED_ACK; 1789 } 1790 1791 /* 1792 * This is only used in IBSS mode where the firmware expect an index 1793 * in a h/w table instead of a destination address. 1794 */ 1795 if (vap->iv_opmode == IEEE80211_M_IBSS) { 1796 if (!ismcast) { 1797 if (in->in_station == -1) { 1798 in->in_station = alloc_unr(sc->sc_unr); 1799 if (in->in_station == -1) { 1800 /* h/w table is full */ 1801 m_freem(m0); 1802 ieee80211_free_node(ni); 1803 ifp->if_oerrors++; 1804 return 0; 1805 } 1806 iwi_write_ibssnode(sc, 1807 ni->ni_macaddr, in->in_station); 1808 } 1809 staid = in->in_station; 1810 } else { 1811 /* 1812 * Multicast addresses have no associated node 1813 * so there will be no station entry. We reserve 1814 * entry 0 for one mcast address and use that. 1815 * If there are many being used this will be 1816 * expensive and we'll need to do a better job 1817 * but for now this handles the broadcast case. 1818 */ 1819 if (!IEEE80211_ADDR_EQ(wh->i_addr1, sc->sc_mcast)) { 1820 IEEE80211_ADDR_COPY(sc->sc_mcast, wh->i_addr1); 1821 iwi_write_ibssnode(sc, sc->sc_mcast, 0); 1822 } 1823 staid = 0; 1824 } 1825 } else 1826 staid = 0; 1827 1828 if (wh->i_fc[1] & IEEE80211_FC1_WEP) { 1829 k = ieee80211_crypto_encap(ni, m0); 1830 if (k == NULL) { 1831 m_freem(m0); 1832 return ENOBUFS; 1833 } 1834 1835 /* packet header may have moved, reset our local pointer */ 1836 wh = mtod(m0, struct ieee80211_frame *); 1837 } 1838 1839 if (bpf_peers_present(ifp->if_bpf)) { 1840 struct iwi_tx_radiotap_header *tap = &sc->sc_txtap; 1841 1842 tap->wt_flags = 0; 1843 1844 bpf_mtap2(ifp->if_bpf, tap, sc->sc_txtap_len, m0); 1845 } 1846 1847 data = &txq->data[txq->cur]; 1848 desc = &txq->desc[txq->cur]; 1849 1850 /* save and trim IEEE802.11 header */ 1851 m_copydata(m0, 0, hdrlen, (caddr_t)&desc->wh); 1852 m_adj(m0, hdrlen); 1853 1854 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, m0, segs, 1855 &nsegs, 0); 1856 if (error != 0 && error != EFBIG) { 1857 device_printf(sc->sc_dev, "could not map mbuf (error %d)\n", 1858 error); 1859 m_freem(m0); 1860 return error; 1861 } 1862 if (error != 0) { 1863 mnew = m_defrag(m0, M_DONTWAIT); 1864 if (mnew == NULL) { 1865 device_printf(sc->sc_dev, 1866 "could not defragment mbuf\n"); 1867 m_freem(m0); 1868 return ENOBUFS; 1869 } 1870 m0 = mnew; 1871 1872 error = bus_dmamap_load_mbuf_sg(txq->data_dmat, data->map, 1873 m0, segs, &nsegs, 0); 1874 if (error != 0) { 1875 device_printf(sc->sc_dev, 1876 "could not map mbuf (error %d)\n", error); 1877 m_freem(m0); 1878 return error; 1879 } 1880 } 1881 1882 data->m = m0; 1883 data->ni = ni; 1884 1885 desc->hdr.type = IWI_HDR_TYPE_DATA; 1886 desc->hdr.flags = IWI_HDR_FLAG_IRQ; 1887 desc->station = staid; 1888 desc->cmd = IWI_DATA_CMD_TX; 1889 desc->len = htole16(m0->m_pkthdr.len); 1890 desc->flags = flags; 1891 desc->xflags = xflags; 1892 1893#if 0 1894 if (vap->iv_flags & IEEE80211_F_PRIVACY) 1895 desc->wep_txkey = vap->iv_def_txkey; 1896 else 1897#endif 1898 desc->flags |= IWI_DATA_FLAG_NO_WEP; 1899 1900 desc->nseg = htole32(nsegs); 1901 for (i = 0; i < nsegs; i++) { 1902 desc->seg_addr[i] = htole32(segs[i].ds_addr); 1903 desc->seg_len[i] = htole16(segs[i].ds_len); 1904 } 1905 1906 bus_dmamap_sync(txq->data_dmat, data->map, BUS_DMASYNC_PREWRITE); 1907 bus_dmamap_sync(txq->desc_dmat, txq->desc_map, BUS_DMASYNC_PREWRITE); 1908 1909 DPRINTFN(5, ("sending data frame txq=%u idx=%u len=%u nseg=%u\n", 1910 ac, txq->cur, le16toh(desc->len), nsegs)); 1911 1912 txq->queued++; 1913 txq->cur = (txq->cur + 1) % IWI_TX_RING_COUNT; 1914 CSR_WRITE_4(sc, txq->csr_widx, txq->cur); 1915 1916 return 0; 1917} 1918 1919static int 1920iwi_raw_xmit(struct ieee80211_node *ni, struct mbuf *m, 1921 const struct ieee80211_bpf_params *params) 1922{ 1923 /* no support; just discard */ 1924 m_freem(m); 1925 ieee80211_free_node(ni); 1926 return 0; 1927} 1928 1929static void 1930iwi_start_locked(struct ifnet *ifp) 1931{ 1932 struct iwi_softc *sc = ifp->if_softc; 1933 struct mbuf *m; 1934 struct ieee80211_node *ni; 1935 int ac; 1936 1937 IWI_LOCK_ASSERT(sc); 1938 1939 if ((ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) 1940 return; 1941 1942 for (;;) { 1943 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 1944 if (m == NULL) 1945 break; 1946 ac = M_WME_GETAC(m); 1947 if (sc->txq[ac].queued > IWI_TX_RING_COUNT - 8) { 1948 /* there is no place left in this ring; tail drop */ 1949 /* XXX tail drop */ 1950 IFQ_DRV_PREPEND(&ifp->if_snd, m); 1951 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 1952 break; 1953 } 1954 1955 BPF_MTAP(ifp, m); 1956 1957 ni = (struct ieee80211_node *) m->m_pkthdr.rcvif; 1958 if (iwi_tx_start(ifp, m, ni, ac) != 0) { 1959 ieee80211_free_node(ni); 1960 ifp->if_oerrors++; 1961 break; 1962 } 1963 1964 sc->sc_tx_timer = 5; 1965 } 1966} 1967 1968static void 1969iwi_start(struct ifnet *ifp) 1970{ 1971 struct iwi_softc *sc = ifp->if_softc; 1972 IWI_LOCK_DECL; 1973 1974 IWI_LOCK(sc); 1975 iwi_start_locked(ifp); 1976 IWI_UNLOCK(sc); 1977} 1978 1979static void 1980iwi_watchdog(void *arg) 1981{ 1982 struct iwi_softc *sc = arg; 1983 struct ifnet *ifp = sc->sc_ifp; 1984 struct ieee80211com *ic = ifp->if_l2com; 1985 1986 IWI_LOCK_ASSERT(sc); 1987 1988 if (sc->sc_tx_timer > 0) { 1989 if (--sc->sc_tx_timer == 0) { 1990 if_printf(ifp, "device timeout\n"); 1991 ifp->if_oerrors++; 1992 ieee80211_runtask(ic, &sc->sc_restarttask); 1993 } 1994 } 1995 if (sc->sc_state_timer > 0) { 1996 if (--sc->sc_state_timer == 0) { 1997 if_printf(ifp, "firmware stuck in state %d, resetting\n", 1998 sc->fw_state); 1999 if (sc->fw_state == IWI_FW_SCANNING) { 2000 struct ieee80211com *ic = ifp->if_l2com; 2001 ieee80211_cancel_scan(TAILQ_FIRST(&ic->ic_vaps)); 2002 } 2003 ieee80211_runtask(ic, &sc->sc_restarttask); 2004 sc->sc_state_timer = 3; 2005 } 2006 } 2007 if (sc->sc_busy_timer > 0) { 2008 if (--sc->sc_busy_timer == 0) { 2009 if_printf(ifp, "firmware command timeout, resetting\n"); 2010 ieee80211_runtask(ic, &sc->sc_restarttask); 2011 } 2012 } 2013 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc); 2014} 2015 2016static int 2017iwi_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 2018{ 2019 struct iwi_softc *sc = ifp->if_softc; 2020 struct ieee80211com *ic = ifp->if_l2com; 2021 struct ifreq *ifr = (struct ifreq *) data; 2022 int error = 0, startall = 0; 2023 IWI_LOCK_DECL; 2024 2025 switch (cmd) { 2026 case SIOCSIFFLAGS: 2027 IWI_LOCK(sc); 2028 if (ifp->if_flags & IFF_UP) { 2029 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) { 2030 iwi_init_locked(sc); 2031 startall = 1; 2032 } 2033 } else { 2034 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 2035 iwi_stop_locked(sc); 2036 } 2037 IWI_UNLOCK(sc); 2038 if (startall) 2039 ieee80211_start_all(ic); 2040 break; 2041 case SIOCGIFMEDIA: 2042 error = ifmedia_ioctl(ifp, ifr, &ic->ic_media, cmd); 2043 break; 2044 case SIOCGIFADDR: 2045 error = ether_ioctl(ifp, cmd, data); 2046 break; 2047 default: 2048 error = EINVAL; 2049 break; 2050 } 2051 return error; 2052} 2053 2054static void 2055iwi_stop_master(struct iwi_softc *sc) 2056{ 2057 uint32_t tmp; 2058 int ntries; 2059 2060 /* disable interrupts */ 2061 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, 0); 2062 2063 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_STOP_MASTER); 2064 for (ntries = 0; ntries < 5; ntries++) { 2065 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2066 break; 2067 DELAY(10); 2068 } 2069 if (ntries == 5) 2070 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2071 2072 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2073 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_PRINCETON_RESET); 2074 2075 sc->flags &= ~IWI_FLAG_FW_INITED; 2076} 2077 2078static int 2079iwi_reset(struct iwi_softc *sc) 2080{ 2081 uint32_t tmp; 2082 int i, ntries; 2083 2084 iwi_stop_master(sc); 2085 2086 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2087 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2088 2089 CSR_WRITE_4(sc, IWI_CSR_READ_INT, IWI_READ_INT_INIT_HOST); 2090 2091 /* wait for clock stabilization */ 2092 for (ntries = 0; ntries < 1000; ntries++) { 2093 if (CSR_READ_4(sc, IWI_CSR_CTL) & IWI_CTL_CLOCK_READY) 2094 break; 2095 DELAY(200); 2096 } 2097 if (ntries == 1000) { 2098 device_printf(sc->sc_dev, 2099 "timeout waiting for clock stabilization\n"); 2100 return EIO; 2101 } 2102 2103 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2104 CSR_WRITE_4(sc, IWI_CSR_RST, tmp | IWI_RST_SOFT_RESET); 2105 2106 DELAY(10); 2107 2108 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2109 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_INIT); 2110 2111 /* clear NIC memory */ 2112 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0); 2113 for (i = 0; i < 0xc000; i++) 2114 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2115 2116 return 0; 2117} 2118 2119static const struct iwi_firmware_ohdr * 2120iwi_setup_ofw(struct iwi_softc *sc, struct iwi_fw *fw) 2121{ 2122 const struct firmware *fp = fw->fp; 2123 const struct iwi_firmware_ohdr *hdr; 2124 2125 if (fp->datasize < sizeof (struct iwi_firmware_ohdr)) { 2126 device_printf(sc->sc_dev, "image '%s' too small\n", fp->name); 2127 return NULL; 2128 } 2129 hdr = (const struct iwi_firmware_ohdr *)fp->data; 2130 if ((IWI_FW_GET_MAJOR(le32toh(hdr->version)) != IWI_FW_REQ_MAJOR) || 2131 (IWI_FW_GET_MINOR(le32toh(hdr->version)) != IWI_FW_REQ_MINOR)) { 2132 device_printf(sc->sc_dev, "version for '%s' %d.%d != %d.%d\n", 2133 fp->name, IWI_FW_GET_MAJOR(le32toh(hdr->version)), 2134 IWI_FW_GET_MINOR(le32toh(hdr->version)), IWI_FW_REQ_MAJOR, 2135 IWI_FW_REQ_MINOR); 2136 return NULL; 2137 } 2138 fw->data = ((const char *) fp->data) + sizeof(struct iwi_firmware_ohdr); 2139 fw->size = fp->datasize - sizeof(struct iwi_firmware_ohdr); 2140 fw->name = fp->name; 2141 return hdr; 2142} 2143 2144static const struct iwi_firmware_ohdr * 2145iwi_setup_oucode(struct iwi_softc *sc, struct iwi_fw *fw) 2146{ 2147 const struct iwi_firmware_ohdr *hdr; 2148 2149 hdr = iwi_setup_ofw(sc, fw); 2150 if (hdr != NULL && le32toh(hdr->mode) != IWI_FW_MODE_UCODE) { 2151 device_printf(sc->sc_dev, "%s is not a ucode image\n", 2152 fw->name); 2153 hdr = NULL; 2154 } 2155 return hdr; 2156} 2157 2158static void 2159iwi_getfw(struct iwi_fw *fw, const char *fwname, 2160 struct iwi_fw *uc, const char *ucname) 2161{ 2162 if (fw->fp == NULL) 2163 fw->fp = firmware_get(fwname); 2164 /* NB: pre-3.0 ucode is packaged separately */ 2165 if (uc->fp == NULL && fw->fp != NULL && fw->fp->version < 300) 2166 uc->fp = firmware_get(ucname); 2167} 2168 2169/* 2170 * Get the required firmware images if not already loaded. 2171 * Note that we hold firmware images so long as the device 2172 * is marked up in case we need to reload them on device init. 2173 * This is necessary because we re-init the device sometimes 2174 * from a context where we cannot read from the filesystem 2175 * (e.g. from the taskqueue thread when rfkill is re-enabled). 2176 * XXX return 0 on success, 1 on error. 2177 * 2178 * NB: the order of get'ing and put'ing images here is 2179 * intentional to support handling firmware images bundled 2180 * by operating mode and/or all together in one file with 2181 * the boot firmware as "master". 2182 */ 2183static int 2184iwi_get_firmware(struct iwi_softc *sc, enum ieee80211_opmode opmode) 2185{ 2186 const struct iwi_firmware_hdr *hdr; 2187 const struct firmware *fp; 2188 2189 /* invalidate cached firmware on mode change */ 2190 if (sc->fw_mode != opmode) 2191 iwi_put_firmware(sc); 2192 2193 switch (opmode) { 2194 case IEEE80211_M_STA: 2195 iwi_getfw(&sc->fw_fw, "iwi_bss", &sc->fw_uc, "iwi_ucode_bss"); 2196 break; 2197 case IEEE80211_M_IBSS: 2198 iwi_getfw(&sc->fw_fw, "iwi_ibss", &sc->fw_uc, "iwi_ucode_ibss"); 2199 break; 2200 case IEEE80211_M_MONITOR: 2201 iwi_getfw(&sc->fw_fw, "iwi_monitor", 2202 &sc->fw_uc, "iwi_ucode_monitor"); 2203 break; 2204 default: 2205 break; 2206 } 2207 fp = sc->fw_fw.fp; 2208 if (fp == NULL) { 2209 device_printf(sc->sc_dev, "could not load firmware\n"); 2210 goto bad; 2211 } 2212 if (fp->version < 300) { 2213 /* 2214 * Firmware prior to 3.0 was packaged as separate 2215 * boot, firmware, and ucode images. Verify the 2216 * ucode image was read in, retrieve the boot image 2217 * if needed, and check version stamps for consistency. 2218 * The version stamps in the data are also checked 2219 * above; this is a bit paranoid but is a cheap 2220 * safeguard against mis-packaging. 2221 */ 2222 if (sc->fw_uc.fp == NULL) { 2223 device_printf(sc->sc_dev, "could not load ucode\n"); 2224 goto bad; 2225 } 2226 if (sc->fw_boot.fp == NULL) { 2227 sc->fw_boot.fp = firmware_get("iwi_boot"); 2228 if (sc->fw_boot.fp == NULL) { 2229 device_printf(sc->sc_dev, 2230 "could not load boot firmware\n"); 2231 goto bad; 2232 } 2233 } 2234 if (sc->fw_boot.fp->version != sc->fw_fw.fp->version || 2235 sc->fw_boot.fp->version != sc->fw_uc.fp->version) { 2236 device_printf(sc->sc_dev, 2237 "firmware version mismatch: " 2238 "'%s' is %d, '%s' is %d, '%s' is %d\n", 2239 sc->fw_boot.fp->name, sc->fw_boot.fp->version, 2240 sc->fw_uc.fp->name, sc->fw_uc.fp->version, 2241 sc->fw_fw.fp->name, sc->fw_fw.fp->version 2242 ); 2243 goto bad; 2244 } 2245 /* 2246 * Check and setup each image. 2247 */ 2248 if (iwi_setup_oucode(sc, &sc->fw_uc) == NULL || 2249 iwi_setup_ofw(sc, &sc->fw_boot) == NULL || 2250 iwi_setup_ofw(sc, &sc->fw_fw) == NULL) 2251 goto bad; 2252 } else { 2253 /* 2254 * Check and setup combined image. 2255 */ 2256 if (fp->datasize < sizeof(struct iwi_firmware_hdr)) { 2257 device_printf(sc->sc_dev, "image '%s' too small\n", 2258 fp->name); 2259 goto bad; 2260 } 2261 hdr = (const struct iwi_firmware_hdr *)fp->data; 2262 if (fp->datasize < sizeof(*hdr) + le32toh(hdr->bsize) + le32toh(hdr->usize) 2263 + le32toh(hdr->fsize)) { 2264 device_printf(sc->sc_dev, "image '%s' too small (2)\n", 2265 fp->name); 2266 goto bad; 2267 } 2268 sc->fw_boot.data = ((const char *) fp->data) + sizeof(*hdr); 2269 sc->fw_boot.size = le32toh(hdr->bsize); 2270 sc->fw_boot.name = fp->name; 2271 sc->fw_uc.data = sc->fw_boot.data + sc->fw_boot.size; 2272 sc->fw_uc.size = le32toh(hdr->usize); 2273 sc->fw_uc.name = fp->name; 2274 sc->fw_fw.data = sc->fw_uc.data + sc->fw_uc.size; 2275 sc->fw_fw.size = le32toh(hdr->fsize); 2276 sc->fw_fw.name = fp->name; 2277 } 2278#if 0 2279 device_printf(sc->sc_dev, "boot %d ucode %d fw %d bytes\n", 2280 sc->fw_boot.size, sc->fw_uc.size, sc->fw_fw.size); 2281#endif 2282 2283 sc->fw_mode = opmode; 2284 return 0; 2285bad: 2286 iwi_put_firmware(sc); 2287 return 1; 2288} 2289 2290static void 2291iwi_put_fw(struct iwi_fw *fw) 2292{ 2293 if (fw->fp != NULL) { 2294 firmware_put(fw->fp, FIRMWARE_UNLOAD); 2295 fw->fp = NULL; 2296 } 2297 fw->data = NULL; 2298 fw->size = 0; 2299 fw->name = NULL; 2300} 2301 2302/* 2303 * Release any cached firmware images. 2304 */ 2305static void 2306iwi_put_firmware(struct iwi_softc *sc) 2307{ 2308 iwi_put_fw(&sc->fw_uc); 2309 iwi_put_fw(&sc->fw_fw); 2310 iwi_put_fw(&sc->fw_boot); 2311} 2312 2313static int 2314iwi_load_ucode(struct iwi_softc *sc, const struct iwi_fw *fw) 2315{ 2316 uint32_t tmp; 2317 const uint16_t *w; 2318 const char *uc = fw->data; 2319 size_t size = fw->size; 2320 int i, ntries, error; 2321 2322 IWI_LOCK_ASSERT(sc); 2323 error = 0; 2324 CSR_WRITE_4(sc, IWI_CSR_RST, CSR_READ_4(sc, IWI_CSR_RST) | 2325 IWI_RST_STOP_MASTER); 2326 for (ntries = 0; ntries < 5; ntries++) { 2327 if (CSR_READ_4(sc, IWI_CSR_RST) & IWI_RST_MASTER_DISABLED) 2328 break; 2329 DELAY(10); 2330 } 2331 if (ntries == 5) { 2332 device_printf(sc->sc_dev, "timeout waiting for master\n"); 2333 error = EIO; 2334 goto fail; 2335 } 2336 2337 MEM_WRITE_4(sc, 0x3000e0, 0x80000000); 2338 DELAY(5000); 2339 2340 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2341 tmp &= ~IWI_RST_PRINCETON_RESET; 2342 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2343 2344 DELAY(5000); 2345 MEM_WRITE_4(sc, 0x3000e0, 0); 2346 DELAY(1000); 2347 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 1); 2348 DELAY(1000); 2349 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, 0); 2350 DELAY(1000); 2351 MEM_WRITE_1(sc, 0x200000, 0x00); 2352 MEM_WRITE_1(sc, 0x200000, 0x40); 2353 DELAY(1000); 2354 2355 /* write microcode into adapter memory */ 2356 for (w = (const uint16_t *)uc; size > 0; w++, size -= 2) 2357 MEM_WRITE_2(sc, 0x200010, htole16(*w)); 2358 2359 MEM_WRITE_1(sc, 0x200000, 0x00); 2360 MEM_WRITE_1(sc, 0x200000, 0x80); 2361 2362 /* wait until we get an answer */ 2363 for (ntries = 0; ntries < 100; ntries++) { 2364 if (MEM_READ_1(sc, 0x200000) & 1) 2365 break; 2366 DELAY(100); 2367 } 2368 if (ntries == 100) { 2369 device_printf(sc->sc_dev, 2370 "timeout waiting for ucode to initialize\n"); 2371 error = EIO; 2372 goto fail; 2373 } 2374 2375 /* read the answer or the firmware will not initialize properly */ 2376 for (i = 0; i < 7; i++) 2377 MEM_READ_4(sc, 0x200004); 2378 2379 MEM_WRITE_1(sc, 0x200000, 0x00); 2380 2381fail: 2382 return error; 2383} 2384 2385/* macro to handle unaligned little endian data in firmware image */ 2386#define GETLE32(p) ((p)[0] | (p)[1] << 8 | (p)[2] << 16 | (p)[3] << 24) 2387 2388static int 2389iwi_load_firmware(struct iwi_softc *sc, const struct iwi_fw *fw) 2390{ 2391 u_char *p, *end; 2392 uint32_t sentinel, ctl, src, dst, sum, len, mlen, tmp; 2393 int ntries, error; 2394 2395 IWI_LOCK_ASSERT(sc); 2396 2397 /* copy firmware image to DMA memory */ 2398 memcpy(sc->fw_virtaddr, fw->data, fw->size); 2399 2400 /* make sure the adapter will get up-to-date values */ 2401 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_PREWRITE); 2402 2403 /* tell the adapter where the command blocks are stored */ 2404 MEM_WRITE_4(sc, 0x3000a0, 0x27000); 2405 2406 /* 2407 * Store command blocks into adapter's internal memory using register 2408 * indirections. The adapter will read the firmware image through DMA 2409 * using information stored in command blocks. 2410 */ 2411 src = sc->fw_physaddr; 2412 p = sc->fw_virtaddr; 2413 end = p + fw->size; 2414 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_ADDR, 0x27000); 2415 2416 while (p < end) { 2417 dst = GETLE32(p); p += 4; src += 4; 2418 len = GETLE32(p); p += 4; src += 4; 2419 p += len; 2420 2421 while (len > 0) { 2422 mlen = min(len, IWI_CB_MAXDATALEN); 2423 2424 ctl = IWI_CB_DEFAULT_CTL | mlen; 2425 sum = ctl ^ src ^ dst; 2426 2427 /* write a command block */ 2428 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, ctl); 2429 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, src); 2430 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, dst); 2431 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, sum); 2432 2433 src += mlen; 2434 dst += mlen; 2435 len -= mlen; 2436 } 2437 } 2438 2439 /* write a fictive final command block (sentinel) */ 2440 sentinel = CSR_READ_4(sc, IWI_CSR_AUTOINC_ADDR); 2441 CSR_WRITE_4(sc, IWI_CSR_AUTOINC_DATA, 0); 2442 2443 tmp = CSR_READ_4(sc, IWI_CSR_RST); 2444 tmp &= ~(IWI_RST_MASTER_DISABLED | IWI_RST_STOP_MASTER); 2445 CSR_WRITE_4(sc, IWI_CSR_RST, tmp); 2446 2447 /* tell the adapter to start processing command blocks */ 2448 MEM_WRITE_4(sc, 0x3000a4, 0x540100); 2449 2450 /* wait until the adapter reaches the sentinel */ 2451 for (ntries = 0; ntries < 400; ntries++) { 2452 if (MEM_READ_4(sc, 0x3000d0) >= sentinel) 2453 break; 2454 DELAY(100); 2455 } 2456 /* sync dma, just in case */ 2457 bus_dmamap_sync(sc->fw_dmat, sc->fw_map, BUS_DMASYNC_POSTWRITE); 2458 if (ntries == 400) { 2459 device_printf(sc->sc_dev, 2460 "timeout processing command blocks for %s firmware\n", 2461 fw->name); 2462 return EIO; 2463 } 2464 2465 /* we're done with command blocks processing */ 2466 MEM_WRITE_4(sc, 0x3000a4, 0x540c00); 2467 2468 /* allow interrupts so we know when the firmware is ready */ 2469 CSR_WRITE_4(sc, IWI_CSR_INTR_MASK, IWI_INTR_MASK); 2470 2471 /* tell the adapter to initialize the firmware */ 2472 CSR_WRITE_4(sc, IWI_CSR_RST, 0); 2473 2474 tmp = CSR_READ_4(sc, IWI_CSR_CTL); 2475 CSR_WRITE_4(sc, IWI_CSR_CTL, tmp | IWI_CTL_ALLOW_STANDBY); 2476 2477 /* wait at most one second for firmware initialization to complete */ 2478 if ((error = msleep(sc, &sc->sc_mtx, 0, "iwiinit", hz)) != 0) { 2479 device_printf(sc->sc_dev, "timeout waiting for %s firmware " 2480 "initialization to complete\n", fw->name); 2481 } 2482 2483 return error; 2484} 2485 2486static int 2487iwi_setpowermode(struct iwi_softc *sc, struct ieee80211vap *vap) 2488{ 2489 uint32_t data; 2490 2491 if (vap->iv_flags & IEEE80211_F_PMGTON) { 2492 /* XXX set more fine-grained operation */ 2493 data = htole32(IWI_POWER_MODE_MAX); 2494 } else 2495 data = htole32(IWI_POWER_MODE_CAM); 2496 2497 DPRINTF(("Setting power mode to %u\n", le32toh(data))); 2498 return iwi_cmd(sc, IWI_CMD_SET_POWER_MODE, &data, sizeof data); 2499} 2500 2501static int 2502iwi_setwepkeys(struct iwi_softc *sc, struct ieee80211vap *vap) 2503{ 2504 struct iwi_wep_key wepkey; 2505 struct ieee80211_key *wk; 2506 int error, i; 2507 2508 for (i = 0; i < IEEE80211_WEP_NKID; i++) { 2509 wk = &vap->iv_nw_keys[i]; 2510 2511 wepkey.cmd = IWI_WEP_KEY_CMD_SETKEY; 2512 wepkey.idx = i; 2513 wepkey.len = wk->wk_keylen; 2514 memset(wepkey.key, 0, sizeof wepkey.key); 2515 memcpy(wepkey.key, wk->wk_key, wk->wk_keylen); 2516 DPRINTF(("Setting wep key index %u len %u\n", wepkey.idx, 2517 wepkey.len)); 2518 error = iwi_cmd(sc, IWI_CMD_SET_WEP_KEY, &wepkey, 2519 sizeof wepkey); 2520 if (error != 0) 2521 return error; 2522 } 2523 return 0; 2524} 2525 2526static int 2527iwi_config(struct iwi_softc *sc) 2528{ 2529 struct ifnet *ifp = sc->sc_ifp; 2530 struct ieee80211com *ic = ifp->if_l2com; 2531 struct iwi_configuration config; 2532 struct iwi_rateset rs; 2533 struct iwi_txpower power; 2534 uint32_t data; 2535 int error, i; 2536 2537 IWI_LOCK_ASSERT(sc); 2538 2539 DPRINTF(("Setting MAC address to %6D\n", IF_LLADDR(ifp), ":")); 2540 error = iwi_cmd(sc, IWI_CMD_SET_MAC_ADDRESS, IF_LLADDR(ifp), 2541 IEEE80211_ADDR_LEN); 2542 if (error != 0) 2543 return error; 2544 2545 memset(&config, 0, sizeof config); 2546 config.bluetooth_coexistence = sc->bluetooth; 2547 config.silence_threshold = 0x1e; 2548 config.antenna = sc->antenna; 2549 config.multicast_enabled = 1; 2550 config.answer_pbreq = (ic->ic_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2551 config.disable_unicast_decryption = 1; 2552 config.disable_multicast_decryption = 1; 2553 DPRINTF(("Configuring adapter\n")); 2554 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2555 if (error != 0) 2556 return error; 2557 if (ic->ic_opmode == IEEE80211_M_IBSS) { 2558 power.mode = IWI_MODE_11B; 2559 power.nchan = 11; 2560 for (i = 0; i < 11; i++) { 2561 power.chan[i].chan = i + 1; 2562 power.chan[i].power = IWI_TXPOWER_MAX; 2563 } 2564 DPRINTF(("Setting .11b channels tx power\n")); 2565 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2566 if (error != 0) 2567 return error; 2568 2569 power.mode = IWI_MODE_11G; 2570 DPRINTF(("Setting .11g channels tx power\n")); 2571 error = iwi_cmd(sc, IWI_CMD_SET_TX_POWER, &power, sizeof power); 2572 if (error != 0) 2573 return error; 2574 } 2575 2576 memset(&rs, 0, sizeof rs); 2577 rs.mode = IWI_MODE_11G; 2578 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2579 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11G].rs_nrates; 2580 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11G].rs_rates, 2581 rs.nrates); 2582 DPRINTF(("Setting .11bg supported rates (%u)\n", rs.nrates)); 2583 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2584 if (error != 0) 2585 return error; 2586 2587 memset(&rs, 0, sizeof rs); 2588 rs.mode = IWI_MODE_11A; 2589 rs.type = IWI_RATESET_TYPE_SUPPORTED; 2590 rs.nrates = ic->ic_sup_rates[IEEE80211_MODE_11A].rs_nrates; 2591 memcpy(rs.rates, ic->ic_sup_rates[IEEE80211_MODE_11A].rs_rates, 2592 rs.nrates); 2593 DPRINTF(("Setting .11a supported rates (%u)\n", rs.nrates)); 2594 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2595 if (error != 0) 2596 return error; 2597 2598 data = htole32(arc4random()); 2599 DPRINTF(("Setting initialization vector to %u\n", le32toh(data))); 2600 error = iwi_cmd(sc, IWI_CMD_SET_IV, &data, sizeof data); 2601 if (error != 0) 2602 return error; 2603 2604 /* enable adapter */ 2605 DPRINTF(("Enabling adapter\n")); 2606 return iwi_cmd(sc, IWI_CMD_ENABLE, NULL, 0); 2607} 2608 2609static __inline void 2610set_scan_type(struct iwi_scan_ext *scan, int ix, int scan_type) 2611{ 2612 uint8_t *st = &scan->scan_type[ix / 2]; 2613 if (ix % 2) 2614 *st = (*st & 0xf0) | ((scan_type & 0xf) << 0); 2615 else 2616 *st = (*st & 0x0f) | ((scan_type & 0xf) << 4); 2617} 2618 2619static int 2620scan_type(const struct ieee80211_scan_state *ss, 2621 const struct ieee80211_channel *chan) 2622{ 2623 /* We can only set one essid for a directed scan */ 2624 if (ss->ss_nssid != 0) 2625 return IWI_SCAN_TYPE_BDIRECTED; 2626 if ((ss->ss_flags & IEEE80211_SCAN_ACTIVE) && 2627 (chan->ic_flags & IEEE80211_CHAN_PASSIVE) == 0) 2628 return IWI_SCAN_TYPE_BROADCAST; 2629 return IWI_SCAN_TYPE_PASSIVE; 2630} 2631 2632static __inline int 2633scan_band(const struct ieee80211_channel *c) 2634{ 2635 return IEEE80211_IS_CHAN_5GHZ(c) ? IWI_CHAN_5GHZ : IWI_CHAN_2GHZ; 2636} 2637 2638/* 2639 * Start a scan on the current channel or all channels. 2640 */ 2641static int 2642iwi_scanchan(struct iwi_softc *sc, unsigned long maxdwell, int allchan) 2643{ 2644 struct ieee80211com *ic; 2645 struct ieee80211_channel *chan; 2646 struct ieee80211_scan_state *ss; 2647 struct iwi_scan_ext scan; 2648 int error = 0; 2649 2650 IWI_LOCK_ASSERT(sc); 2651 if (sc->fw_state == IWI_FW_SCANNING) { 2652 /* 2653 * This should not happen as we only trigger scan_next after 2654 * completion 2655 */ 2656 DPRINTF(("%s: called too early - still scanning\n", __func__)); 2657 return (EBUSY); 2658 } 2659 IWI_STATE_BEGIN(sc, IWI_FW_SCANNING); 2660 2661 ic = sc->sc_ifp->if_l2com; 2662 ss = ic->ic_scan; 2663 2664 memset(&scan, 0, sizeof scan); 2665 scan.full_scan_index = htole32(++sc->sc_scangen); 2666 scan.dwell_time[IWI_SCAN_TYPE_PASSIVE] = htole16(maxdwell); 2667 if (ic->ic_flags_ext & IEEE80211_FEXT_BGSCAN) { 2668 /* 2669 * Use very short dwell times for when we send probe request 2670 * frames. Without this bg scans hang. Ideally this should 2671 * be handled with early-termination as done by net80211 but 2672 * that's not feasible (aborting a scan is problematic). 2673 */ 2674 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(30); 2675 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(30); 2676 } else { 2677 scan.dwell_time[IWI_SCAN_TYPE_BROADCAST] = htole16(maxdwell); 2678 scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED] = htole16(maxdwell); 2679 } 2680 2681 /* We can only set one essid for a directed scan */ 2682 if (ss->ss_nssid != 0) { 2683 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ss->ss_ssid[0].ssid, 2684 ss->ss_ssid[0].len); 2685 if (error) 2686 return (error); 2687 } 2688 2689 if (allchan) { 2690 int i, next, band, b, bstart; 2691 /* 2692 * Convert scan list to run-length encoded channel list 2693 * the firmware requires (preserving the order setup by 2694 * net80211). The first entry in each run specifies the 2695 * band and the count of items in the run. 2696 */ 2697 next = 0; /* next open slot */ 2698 bstart = 0; /* NB: not needed, silence compiler */ 2699 band = -1; /* NB: impossible value */ 2700 KASSERT(ss->ss_last > 0, ("no channels")); 2701 for (i = 0; i < ss->ss_last; i++) { 2702 chan = ss->ss_chans[i]; 2703 b = scan_band(chan); 2704 if (b != band) { 2705 if (band != -1) 2706 scan.channels[bstart] = 2707 (next - bstart) | band; 2708 /* NB: this allocates a slot for the run-len */ 2709 band = b, bstart = next++; 2710 } 2711 if (next >= IWI_SCAN_CHANNELS) { 2712 DPRINTF(("truncating scan list\n")); 2713 break; 2714 } 2715 scan.channels[next] = ieee80211_chan2ieee(ic, chan); 2716 set_scan_type(&scan, next, scan_type(ss, chan)); 2717 next++; 2718 } 2719 scan.channels[bstart] = (next - bstart) | band; 2720 } else { 2721 /* Scan the current channel only */ 2722 chan = ic->ic_curchan; 2723 scan.channels[0] = 1 | scan_band(chan); 2724 scan.channels[1] = ieee80211_chan2ieee(ic, chan); 2725 set_scan_type(&scan, 1, scan_type(ss, chan)); 2726 } 2727#ifdef IWI_DEBUG 2728 if (iwi_debug > 0) { 2729 static const char *scantype[8] = 2730 { "PSTOP", "PASV", "DIR", "BCAST", "BDIR", "5", "6", "7" }; 2731 int i; 2732 printf("Scan request: index %u dwell %d/%d/%d\n" 2733 , le32toh(scan.full_scan_index) 2734 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_PASSIVE]) 2735 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BROADCAST]) 2736 , le16toh(scan.dwell_time[IWI_SCAN_TYPE_BDIRECTED]) 2737 ); 2738 i = 0; 2739 do { 2740 int run = scan.channels[i]; 2741 if (run == 0) 2742 break; 2743 printf("Scan %d %s channels:", run & 0x3f, 2744 run & IWI_CHAN_2GHZ ? "2.4GHz" : "5GHz"); 2745 for (run &= 0x3f, i++; run > 0; run--, i++) { 2746 uint8_t type = scan.scan_type[i/2]; 2747 printf(" %u/%s", scan.channels[i], 2748 scantype[(i & 1 ? type : type>>4) & 7]); 2749 } 2750 printf("\n"); 2751 } while (i < IWI_SCAN_CHANNELS); 2752 } 2753#endif 2754 2755 return (iwi_cmd(sc, IWI_CMD_SCAN_EXT, &scan, sizeof scan)); 2756} 2757 2758static int 2759iwi_set_sensitivity(struct iwi_softc *sc, int8_t rssi_dbm) 2760{ 2761 struct iwi_sensitivity sens; 2762 2763 DPRINTF(("Setting sensitivity to %d\n", rssi_dbm)); 2764 2765 memset(&sens, 0, sizeof sens); 2766 sens.rssi = htole16(rssi_dbm); 2767 return iwi_cmd(sc, IWI_CMD_SET_SENSITIVITY, &sens, sizeof sens); 2768} 2769 2770static int 2771iwi_auth_and_assoc(struct iwi_softc *sc, struct ieee80211vap *vap) 2772{ 2773 struct ieee80211com *ic = vap->iv_ic; 2774 struct ifnet *ifp = vap->iv_ifp; 2775 struct ieee80211_node *ni = vap->iv_bss; 2776 struct iwi_configuration config; 2777 struct iwi_associate *assoc = &sc->assoc; 2778 struct iwi_rateset rs; 2779 uint16_t capinfo; 2780 uint32_t data; 2781 int error, mode; 2782 2783 IWI_LOCK_ASSERT(sc); 2784 2785 if (sc->flags & IWI_FLAG_ASSOCIATED) { 2786 DPRINTF(("Already associated\n")); 2787 return (-1); 2788 } 2789 2790 IWI_STATE_BEGIN(sc, IWI_FW_ASSOCIATING); 2791 error = 0; 2792 mode = 0; 2793 2794 if (IEEE80211_IS_CHAN_A(ic->ic_curchan)) 2795 mode = IWI_MODE_11A; 2796 else if (IEEE80211_IS_CHAN_G(ic->ic_curchan)) 2797 mode = IWI_MODE_11G; 2798 if (IEEE80211_IS_CHAN_B(ic->ic_curchan)) 2799 mode = IWI_MODE_11B; 2800 2801 if (IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) { 2802 memset(&config, 0, sizeof config); 2803 config.bluetooth_coexistence = sc->bluetooth; 2804 config.antenna = sc->antenna; 2805 config.multicast_enabled = 1; 2806 if (mode == IWI_MODE_11G) 2807 config.use_protection = 1; 2808 config.answer_pbreq = 2809 (vap->iv_opmode == IEEE80211_M_IBSS) ? 1 : 0; 2810 config.disable_unicast_decryption = 1; 2811 config.disable_multicast_decryption = 1; 2812 DPRINTF(("Configuring adapter\n")); 2813 error = iwi_cmd(sc, IWI_CMD_SET_CONFIG, &config, sizeof config); 2814 if (error != 0) 2815 goto done; 2816 } 2817 2818#ifdef IWI_DEBUG 2819 if (iwi_debug > 0) { 2820 printf("Setting ESSID to "); 2821 ieee80211_print_essid(ni->ni_essid, ni->ni_esslen); 2822 printf("\n"); 2823 } 2824#endif 2825 error = iwi_cmd(sc, IWI_CMD_SET_ESSID, ni->ni_essid, ni->ni_esslen); 2826 if (error != 0) 2827 goto done; 2828 2829 error = iwi_setpowermode(sc, vap); 2830 if (error != 0) 2831 goto done; 2832 2833 data = htole32(vap->iv_rtsthreshold); 2834 DPRINTF(("Setting RTS threshold to %u\n", le32toh(data))); 2835 error = iwi_cmd(sc, IWI_CMD_SET_RTS_THRESHOLD, &data, sizeof data); 2836 if (error != 0) 2837 goto done; 2838 2839 data = htole32(vap->iv_fragthreshold); 2840 DPRINTF(("Setting fragmentation threshold to %u\n", le32toh(data))); 2841 error = iwi_cmd(sc, IWI_CMD_SET_FRAG_THRESHOLD, &data, sizeof data); 2842 if (error != 0) 2843 goto done; 2844 2845 /* the rate set has already been "negotiated" */ 2846 memset(&rs, 0, sizeof rs); 2847 rs.mode = mode; 2848 rs.type = IWI_RATESET_TYPE_NEGOTIATED; 2849 rs.nrates = ni->ni_rates.rs_nrates; 2850 if (rs.nrates > IWI_RATESET_SIZE) { 2851 DPRINTF(("Truncating negotiated rate set from %u\n", 2852 rs.nrates)); 2853 rs.nrates = IWI_RATESET_SIZE; 2854 } 2855 memcpy(rs.rates, ni->ni_rates.rs_rates, rs.nrates); 2856 DPRINTF(("Setting negotiated rates (%u)\n", rs.nrates)); 2857 error = iwi_cmd(sc, IWI_CMD_SET_RATES, &rs, sizeof rs); 2858 if (error != 0) 2859 goto done; 2860 2861 memset(assoc, 0, sizeof *assoc); 2862 2863 if ((vap->iv_flags & IEEE80211_F_WME) && ni->ni_ies.wme_ie != NULL) { 2864 /* NB: don't treat WME setup as failure */ 2865 if (iwi_wme_setparams(sc, ic) == 0 && iwi_wme_setie(sc) == 0) 2866 assoc->policy |= htole16(IWI_POLICY_WME); 2867 /* XXX complain on failure? */ 2868 } 2869 2870 if (vap->iv_appie_wpa != NULL) { 2871 struct ieee80211_appie *ie = vap->iv_appie_wpa; 2872 2873 DPRINTF(("Setting optional IE (len=%u)\n", ie->ie_len)); 2874 error = iwi_cmd(sc, IWI_CMD_SET_OPTIE, ie->ie_data, ie->ie_len); 2875 if (error != 0) 2876 goto done; 2877 } 2878 2879 error = iwi_set_sensitivity(sc, ic->ic_node_getrssi(ni)); 2880 if (error != 0) 2881 goto done; 2882 2883 assoc->mode = mode; 2884 assoc->chan = ic->ic_curchan->ic_ieee; 2885 /* 2886 * NB: do not arrange for shared key auth w/o privacy 2887 * (i.e. a wep key); it causes a firmware error. 2888 */ 2889 if ((vap->iv_flags & IEEE80211_F_PRIVACY) && 2890 ni->ni_authmode == IEEE80211_AUTH_SHARED) { 2891 assoc->auth = IWI_AUTH_SHARED; 2892 /* 2893 * It's possible to have privacy marked but no default 2894 * key setup. This typically is due to a user app bug 2895 * but if we blindly grab the key the firmware will 2896 * barf so avoid it for now. 2897 */ 2898 if (vap->iv_def_txkey != IEEE80211_KEYIX_NONE) 2899 assoc->auth |= vap->iv_def_txkey << 4; 2900 2901 error = iwi_setwepkeys(sc, vap); 2902 if (error != 0) 2903 goto done; 2904 } 2905 if (vap->iv_flags & IEEE80211_F_WPA) 2906 assoc->policy |= htole16(IWI_POLICY_WPA); 2907 if (vap->iv_opmode == IEEE80211_M_IBSS && ni->ni_tstamp.tsf == 0) 2908 assoc->type = IWI_HC_IBSS_START; 2909 else 2910 assoc->type = IWI_HC_ASSOC; 2911 memcpy(assoc->tstamp, ni->ni_tstamp.data, 8); 2912 2913 if (vap->iv_opmode == IEEE80211_M_IBSS) 2914 capinfo = IEEE80211_CAPINFO_IBSS; 2915 else 2916 capinfo = IEEE80211_CAPINFO_ESS; 2917 if (vap->iv_flags & IEEE80211_F_PRIVACY) 2918 capinfo |= IEEE80211_CAPINFO_PRIVACY; 2919 if ((ic->ic_flags & IEEE80211_F_SHPREAMBLE) && 2920 IEEE80211_IS_CHAN_2GHZ(ic->ic_curchan)) 2921 capinfo |= IEEE80211_CAPINFO_SHORT_PREAMBLE; 2922 if (ni->ni_capinfo & IEEE80211_CAPINFO_SHORT_SLOTTIME) 2923 capinfo |= IEEE80211_CAPINFO_SHORT_SLOTTIME; 2924 assoc->capinfo = htole16(capinfo); 2925 2926 assoc->lintval = htole16(ic->ic_lintval); 2927 assoc->intval = htole16(ni->ni_intval); 2928 IEEE80211_ADDR_COPY(assoc->bssid, ni->ni_bssid); 2929 if (vap->iv_opmode == IEEE80211_M_IBSS) 2930 IEEE80211_ADDR_COPY(assoc->dst, ifp->if_broadcastaddr); 2931 else 2932 IEEE80211_ADDR_COPY(assoc->dst, ni->ni_bssid); 2933 2934 DPRINTF(("%s bssid %6D dst %6D channel %u policy 0x%x " 2935 "auth %u capinfo 0x%x lintval %u bintval %u\n", 2936 assoc->type == IWI_HC_IBSS_START ? "Start" : "Join", 2937 assoc->bssid, ":", assoc->dst, ":", 2938 assoc->chan, le16toh(assoc->policy), assoc->auth, 2939 le16toh(assoc->capinfo), le16toh(assoc->lintval), 2940 le16toh(assoc->intval))); 2941 error = iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2942done: 2943 if (error) 2944 IWI_STATE_END(sc, IWI_FW_ASSOCIATING); 2945 2946 return (error); 2947} 2948 2949static void 2950iwi_disassoc(void *arg, int pending) 2951{ 2952 struct iwi_softc *sc = arg; 2953 IWI_LOCK_DECL; 2954 2955 IWI_LOCK(sc); 2956 iwi_disassociate(sc, 0); 2957 IWI_UNLOCK(sc); 2958} 2959 2960static int 2961iwi_disassociate(struct iwi_softc *sc, int quiet) 2962{ 2963 struct iwi_associate *assoc = &sc->assoc; 2964 2965 if ((sc->flags & IWI_FLAG_ASSOCIATED) == 0) { 2966 DPRINTF(("Not associated\n")); 2967 return (-1); 2968 } 2969 2970 IWI_STATE_BEGIN(sc, IWI_FW_DISASSOCIATING); 2971 2972 if (quiet) 2973 assoc->type = IWI_HC_DISASSOC_QUIET; 2974 else 2975 assoc->type = IWI_HC_DISASSOC; 2976 2977 DPRINTF(("Trying to disassociate from %6D channel %u\n", 2978 assoc->bssid, ":", assoc->chan)); 2979 return iwi_cmd(sc, IWI_CMD_ASSOCIATE, assoc, sizeof *assoc); 2980} 2981 2982/* 2983 * release dma resources for the firmware 2984 */ 2985static void 2986iwi_release_fw_dma(struct iwi_softc *sc) 2987{ 2988 if (sc->fw_flags & IWI_FW_HAVE_PHY) 2989 bus_dmamap_unload(sc->fw_dmat, sc->fw_map); 2990 if (sc->fw_flags & IWI_FW_HAVE_MAP) 2991 bus_dmamem_free(sc->fw_dmat, sc->fw_virtaddr, sc->fw_map); 2992 if (sc->fw_flags & IWI_FW_HAVE_DMAT) 2993 bus_dma_tag_destroy(sc->fw_dmat); 2994 2995 sc->fw_flags = 0; 2996 sc->fw_dma_size = 0; 2997 sc->fw_dmat = NULL; 2998 sc->fw_map = NULL; 2999 sc->fw_physaddr = 0; 3000 sc->fw_virtaddr = NULL; 3001} 3002 3003/* 3004 * allocate the dma descriptor for the firmware. 3005 * Return 0 on success, 1 on error. 3006 * Must be called unlocked, protected by IWI_FLAG_FW_LOADING. 3007 */ 3008static int 3009iwi_init_fw_dma(struct iwi_softc *sc, int size) 3010{ 3011 if (sc->fw_dma_size >= size) 3012 return 0; 3013 if (bus_dma_tag_create(bus_get_dma_tag(sc->sc_dev), 4, 0, 3014 BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, 3015 size, 1, size, 0, NULL, NULL, &sc->fw_dmat) != 0) { 3016 device_printf(sc->sc_dev, 3017 "could not create firmware DMA tag\n"); 3018 goto error; 3019 } 3020 sc->fw_flags |= IWI_FW_HAVE_DMAT; 3021 if (bus_dmamem_alloc(sc->fw_dmat, &sc->fw_virtaddr, 0, 3022 &sc->fw_map) != 0) { 3023 device_printf(sc->sc_dev, 3024 "could not allocate firmware DMA memory\n"); 3025 goto error; 3026 } 3027 sc->fw_flags |= IWI_FW_HAVE_MAP; 3028 if (bus_dmamap_load(sc->fw_dmat, sc->fw_map, sc->fw_virtaddr, 3029 size, iwi_dma_map_addr, &sc->fw_physaddr, 0) != 0) { 3030 device_printf(sc->sc_dev, "could not load firmware DMA map\n"); 3031 goto error; 3032 } 3033 sc->fw_flags |= IWI_FW_HAVE_PHY; 3034 sc->fw_dma_size = size; 3035 return 0; 3036 3037error: 3038 iwi_release_fw_dma(sc); 3039 return 1; 3040} 3041 3042static void 3043iwi_init_locked(struct iwi_softc *sc) 3044{ 3045 struct ifnet *ifp = sc->sc_ifp; 3046 struct iwi_rx_data *data; 3047 int i; 3048 3049 IWI_LOCK_ASSERT(sc); 3050 3051 if (sc->fw_state == IWI_FW_LOADING) { 3052 device_printf(sc->sc_dev, "%s: already loading\n", __func__); 3053 return; /* XXX: condvar? */ 3054 } 3055 3056 iwi_stop_locked(sc); 3057 3058 IWI_STATE_BEGIN(sc, IWI_FW_LOADING); 3059 3060 if (iwi_reset(sc) != 0) { 3061 device_printf(sc->sc_dev, "could not reset adapter\n"); 3062 goto fail; 3063 } 3064 if (iwi_load_firmware(sc, &sc->fw_boot) != 0) { 3065 device_printf(sc->sc_dev, 3066 "could not load boot firmware %s\n", sc->fw_boot.name); 3067 goto fail; 3068 } 3069 if (iwi_load_ucode(sc, &sc->fw_uc) != 0) { 3070 device_printf(sc->sc_dev, 3071 "could not load microcode %s\n", sc->fw_uc.name); 3072 goto fail; 3073 } 3074 3075 iwi_stop_master(sc); 3076 3077 CSR_WRITE_4(sc, IWI_CSR_CMD_BASE, sc->cmdq.physaddr); 3078 CSR_WRITE_4(sc, IWI_CSR_CMD_SIZE, sc->cmdq.count); 3079 CSR_WRITE_4(sc, IWI_CSR_CMD_WIDX, sc->cmdq.cur); 3080 3081 CSR_WRITE_4(sc, IWI_CSR_TX1_BASE, sc->txq[0].physaddr); 3082 CSR_WRITE_4(sc, IWI_CSR_TX1_SIZE, sc->txq[0].count); 3083 CSR_WRITE_4(sc, IWI_CSR_TX1_WIDX, sc->txq[0].cur); 3084 3085 CSR_WRITE_4(sc, IWI_CSR_TX2_BASE, sc->txq[1].physaddr); 3086 CSR_WRITE_4(sc, IWI_CSR_TX2_SIZE, sc->txq[1].count); 3087 CSR_WRITE_4(sc, IWI_CSR_TX2_WIDX, sc->txq[1].cur); 3088 3089 CSR_WRITE_4(sc, IWI_CSR_TX3_BASE, sc->txq[2].physaddr); 3090 CSR_WRITE_4(sc, IWI_CSR_TX3_SIZE, sc->txq[2].count); 3091 CSR_WRITE_4(sc, IWI_CSR_TX3_WIDX, sc->txq[2].cur); 3092 3093 CSR_WRITE_4(sc, IWI_CSR_TX4_BASE, sc->txq[3].physaddr); 3094 CSR_WRITE_4(sc, IWI_CSR_TX4_SIZE, sc->txq[3].count); 3095 CSR_WRITE_4(sc, IWI_CSR_TX4_WIDX, sc->txq[3].cur); 3096 3097 for (i = 0; i < sc->rxq.count; i++) { 3098 data = &sc->rxq.data[i]; 3099 CSR_WRITE_4(sc, data->reg, data->physaddr); 3100 } 3101 3102 CSR_WRITE_4(sc, IWI_CSR_RX_WIDX, sc->rxq.count - 1); 3103 3104 if (iwi_load_firmware(sc, &sc->fw_fw) != 0) { 3105 device_printf(sc->sc_dev, 3106 "could not load main firmware %s\n", sc->fw_fw.name); 3107 goto fail; 3108 } 3109 sc->flags |= IWI_FLAG_FW_INITED; 3110 3111 IWI_STATE_END(sc, IWI_FW_LOADING); 3112 3113 if (iwi_config(sc) != 0) { 3114 device_printf(sc->sc_dev, "unable to enable adapter\n"); 3115 goto fail2; 3116 } 3117 3118 callout_reset(&sc->sc_wdtimer, hz, iwi_watchdog, sc); 3119 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 3120 ifp->if_drv_flags |= IFF_DRV_RUNNING; 3121 return; 3122fail: 3123 IWI_STATE_END(sc, IWI_FW_LOADING); 3124fail2: 3125 iwi_stop_locked(sc); 3126} 3127 3128static void 3129iwi_init(void *priv) 3130{ 3131 struct iwi_softc *sc = priv; 3132 struct ifnet *ifp = sc->sc_ifp; 3133 struct ieee80211com *ic = ifp->if_l2com; 3134 IWI_LOCK_DECL; 3135 3136 IWI_LOCK(sc); 3137 iwi_init_locked(sc); 3138 IWI_UNLOCK(sc); 3139 3140 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 3141 ieee80211_start_all(ic); 3142} 3143 3144static void 3145iwi_stop_locked(void *priv) 3146{ 3147 struct iwi_softc *sc = priv; 3148 struct ifnet *ifp = sc->sc_ifp; 3149 3150 IWI_LOCK_ASSERT(sc); 3151 3152 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 3153 3154 if (sc->sc_softled) { 3155 callout_stop(&sc->sc_ledtimer); 3156 sc->sc_blinking = 0; 3157 } 3158 callout_stop(&sc->sc_wdtimer); 3159 callout_stop(&sc->sc_rftimer); 3160 3161 iwi_stop_master(sc); 3162 3163 CSR_WRITE_4(sc, IWI_CSR_RST, IWI_RST_SOFT_RESET); 3164 3165 /* reset rings */ 3166 iwi_reset_cmd_ring(sc, &sc->cmdq); 3167 iwi_reset_tx_ring(sc, &sc->txq[0]); 3168 iwi_reset_tx_ring(sc, &sc->txq[1]); 3169 iwi_reset_tx_ring(sc, &sc->txq[2]); 3170 iwi_reset_tx_ring(sc, &sc->txq[3]); 3171 iwi_reset_rx_ring(sc, &sc->rxq); 3172 3173 sc->sc_tx_timer = 0; 3174 sc->sc_state_timer = 0; 3175 sc->sc_busy_timer = 0; 3176 sc->flags &= ~(IWI_FLAG_BUSY | IWI_FLAG_ASSOCIATED); 3177 sc->fw_state = IWI_FW_IDLE; 3178 wakeup(sc); 3179} 3180 3181static void 3182iwi_stop(struct iwi_softc *sc) 3183{ 3184 IWI_LOCK_DECL; 3185 3186 IWI_LOCK(sc); 3187 iwi_stop_locked(sc); 3188 IWI_UNLOCK(sc); 3189} 3190 3191static void 3192iwi_restart(void *arg, int npending) 3193{ 3194 struct iwi_softc *sc = arg; 3195 3196 iwi_init(sc); 3197} 3198 3199/* 3200 * Return whether or not the radio is enabled in hardware 3201 * (i.e. the rfkill switch is "off"). 3202 */ 3203static int 3204iwi_getrfkill(struct iwi_softc *sc) 3205{ 3206 return (CSR_READ_4(sc, IWI_CSR_IO) & IWI_IO_RADIO_ENABLED) == 0; 3207} 3208 3209static void 3210iwi_radio_on(void *arg, int pending) 3211{ 3212 struct iwi_softc *sc = arg; 3213 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3214 3215 device_printf(sc->sc_dev, "radio turned on\n"); 3216 3217 iwi_init(sc); 3218 ieee80211_notify_radio(ic, 1); 3219} 3220 3221static void 3222iwi_rfkill_poll(void *arg) 3223{ 3224 struct iwi_softc *sc = arg; 3225 3226 IWI_LOCK_ASSERT(sc); 3227 3228 /* 3229 * Check for a change in rfkill state. We get an 3230 * interrupt when a radio is disabled but not when 3231 * it is enabled so we must poll for the latter. 3232 */ 3233 if (!iwi_getrfkill(sc)) { 3234 struct ifnet *ifp = sc->sc_ifp; 3235 struct ieee80211com *ic = ifp->if_l2com; 3236 3237 ieee80211_runtask(ic, &sc->sc_radiontask); 3238 return; 3239 } 3240 callout_reset(&sc->sc_rftimer, 2*hz, iwi_rfkill_poll, sc); 3241} 3242 3243static void 3244iwi_radio_off(void *arg, int pending) 3245{ 3246 struct iwi_softc *sc = arg; 3247 struct ieee80211com *ic = sc->sc_ifp->if_l2com; 3248 IWI_LOCK_DECL; 3249 3250 device_printf(sc->sc_dev, "radio turned off\n"); 3251 3252 ieee80211_notify_radio(ic, 0); 3253 3254 IWI_LOCK(sc); 3255 iwi_stop_locked(sc); 3256 iwi_rfkill_poll(sc); 3257 IWI_UNLOCK(sc); 3258} 3259 3260static int 3261iwi_sysctl_stats(SYSCTL_HANDLER_ARGS) 3262{ 3263 struct iwi_softc *sc = arg1; 3264 uint32_t size, buf[128]; 3265 3266 memset(buf, 0, sizeof buf); 3267 3268 if (!(sc->flags & IWI_FLAG_FW_INITED)) 3269 return SYSCTL_OUT(req, buf, sizeof buf); 3270 3271 size = min(CSR_READ_4(sc, IWI_CSR_TABLE0_SIZE), 128 - 1); 3272 CSR_READ_REGION_4(sc, IWI_CSR_TABLE0_BASE, &buf[1], size); 3273 3274 return SYSCTL_OUT(req, buf, size); 3275} 3276 3277static int 3278iwi_sysctl_radio(SYSCTL_HANDLER_ARGS) 3279{ 3280 struct iwi_softc *sc = arg1; 3281 int val = !iwi_getrfkill(sc); 3282 3283 return SYSCTL_OUT(req, &val, sizeof val); 3284} 3285 3286/* 3287 * Add sysctl knobs. 3288 */ 3289static void 3290iwi_sysctlattach(struct iwi_softc *sc) 3291{ 3292 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 3293 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 3294 3295 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "radio", 3296 CTLTYPE_INT | CTLFLAG_RD, sc, 0, iwi_sysctl_radio, "I", 3297 "radio transmitter switch state (0=off, 1=on)"); 3298 3299 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "stats", 3300 CTLTYPE_OPAQUE | CTLFLAG_RD, sc, 0, iwi_sysctl_stats, "S", 3301 "statistics"); 3302 3303 sc->bluetooth = 0; 3304 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "bluetooth", 3305 CTLFLAG_RW, &sc->bluetooth, 0, "bluetooth coexistence"); 3306 3307 sc->antenna = IWI_ANTENNA_AUTO; 3308 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, "antenna", 3309 CTLFLAG_RW, &sc->antenna, 0, "antenna (0=auto)"); 3310} 3311 3312/* 3313 * LED support. 3314 * 3315 * Different cards have different capabilities. Some have three 3316 * led's while others have only one. The linux ipw driver defines 3317 * led's for link state (associated or not), band (11a, 11g, 11b), 3318 * and for link activity. We use one led and vary the blink rate 3319 * according to the tx/rx traffic a la the ath driver. 3320 */ 3321 3322static __inline uint32_t 3323iwi_toggle_event(uint32_t r) 3324{ 3325 return r &~ (IWI_RST_STANDBY | IWI_RST_GATE_ODMA | 3326 IWI_RST_GATE_IDMA | IWI_RST_GATE_ADMA); 3327} 3328 3329static uint32_t 3330iwi_read_event(struct iwi_softc *sc) 3331{ 3332 return MEM_READ_4(sc, IWI_MEM_EEPROM_EVENT); 3333} 3334 3335static void 3336iwi_write_event(struct iwi_softc *sc, uint32_t v) 3337{ 3338 MEM_WRITE_4(sc, IWI_MEM_EEPROM_EVENT, v); 3339} 3340 3341static void 3342iwi_led_done(void *arg) 3343{ 3344 struct iwi_softc *sc = arg; 3345 3346 sc->sc_blinking = 0; 3347} 3348 3349/* 3350 * Turn the activity LED off: flip the pin and then set a timer so no 3351 * update will happen for the specified duration. 3352 */ 3353static void 3354iwi_led_off(void *arg) 3355{ 3356 struct iwi_softc *sc = arg; 3357 uint32_t v; 3358 3359 v = iwi_read_event(sc); 3360 v &= ~sc->sc_ledpin; 3361 iwi_write_event(sc, iwi_toggle_event(v)); 3362 callout_reset(&sc->sc_ledtimer, sc->sc_ledoff, iwi_led_done, sc); 3363} 3364 3365/* 3366 * Blink the LED according to the specified on/off times. 3367 */ 3368static void 3369iwi_led_blink(struct iwi_softc *sc, int on, int off) 3370{ 3371 uint32_t v; 3372 3373 v = iwi_read_event(sc); 3374 v |= sc->sc_ledpin; 3375 iwi_write_event(sc, iwi_toggle_event(v)); 3376 sc->sc_blinking = 1; 3377 sc->sc_ledoff = off; 3378 callout_reset(&sc->sc_ledtimer, on, iwi_led_off, sc); 3379} 3380 3381static void 3382iwi_led_event(struct iwi_softc *sc, int event) 3383{ 3384#define N(a) (sizeof(a)/sizeof(a[0])) 3385 /* NB: on/off times from the Atheros NDIS driver, w/ permission */ 3386 static const struct { 3387 u_int rate; /* tx/rx iwi rate */ 3388 u_int16_t timeOn; /* LED on time (ms) */ 3389 u_int16_t timeOff; /* LED off time (ms) */ 3390 } blinkrates[] = { 3391 { IWI_RATE_OFDM54, 40, 10 }, 3392 { IWI_RATE_OFDM48, 44, 11 }, 3393 { IWI_RATE_OFDM36, 50, 13 }, 3394 { IWI_RATE_OFDM24, 57, 14 }, 3395 { IWI_RATE_OFDM18, 67, 16 }, 3396 { IWI_RATE_OFDM12, 80, 20 }, 3397 { IWI_RATE_DS11, 100, 25 }, 3398 { IWI_RATE_OFDM9, 133, 34 }, 3399 { IWI_RATE_OFDM6, 160, 40 }, 3400 { IWI_RATE_DS5, 200, 50 }, 3401 { 6, 240, 58 }, /* XXX 3Mb/s if it existed */ 3402 { IWI_RATE_DS2, 267, 66 }, 3403 { IWI_RATE_DS1, 400, 100 }, 3404 { 0, 500, 130 }, /* unknown rate/polling */ 3405 }; 3406 uint32_t txrate; 3407 int j = 0; /* XXX silence compiler */ 3408 3409 sc->sc_ledevent = ticks; /* time of last event */ 3410 if (sc->sc_blinking) /* don't interrupt active blink */ 3411 return; 3412 switch (event) { 3413 case IWI_LED_POLL: 3414 j = N(blinkrates)-1; 3415 break; 3416 case IWI_LED_TX: 3417 /* read current transmission rate from adapter */ 3418 txrate = CSR_READ_4(sc, IWI_CSR_CURRENT_TX_RATE); 3419 if (blinkrates[sc->sc_txrix].rate != txrate) { 3420 for (j = 0; j < N(blinkrates)-1; j++) 3421 if (blinkrates[j].rate == txrate) 3422 break; 3423 sc->sc_txrix = j; 3424 } else 3425 j = sc->sc_txrix; 3426 break; 3427 case IWI_LED_RX: 3428 if (blinkrates[sc->sc_rxrix].rate != sc->sc_rxrate) { 3429 for (j = 0; j < N(blinkrates)-1; j++) 3430 if (blinkrates[j].rate == sc->sc_rxrate) 3431 break; 3432 sc->sc_rxrix = j; 3433 } else 3434 j = sc->sc_rxrix; 3435 break; 3436 } 3437 /* XXX beware of overflow */ 3438 iwi_led_blink(sc, (blinkrates[j].timeOn * hz) / 1000, 3439 (blinkrates[j].timeOff * hz) / 1000); 3440#undef N 3441} 3442 3443static int 3444iwi_sysctl_softled(SYSCTL_HANDLER_ARGS) 3445{ 3446 struct iwi_softc *sc = arg1; 3447 int softled = sc->sc_softled; 3448 int error; 3449 3450 error = sysctl_handle_int(oidp, &softled, 0, req); 3451 if (error || !req->newptr) 3452 return error; 3453 softled = (softled != 0); 3454 if (softled != sc->sc_softled) { 3455 if (softled) { 3456 uint32_t v = iwi_read_event(sc); 3457 v &= ~sc->sc_ledpin; 3458 iwi_write_event(sc, iwi_toggle_event(v)); 3459 } 3460 sc->sc_softled = softled; 3461 } 3462 return 0; 3463} 3464 3465static void 3466iwi_ledattach(struct iwi_softc *sc) 3467{ 3468 struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(sc->sc_dev); 3469 struct sysctl_oid *tree = device_get_sysctl_tree(sc->sc_dev); 3470 3471 sc->sc_blinking = 0; 3472 sc->sc_ledstate = 1; 3473 sc->sc_ledidle = (2700*hz)/1000; /* 2.7sec */ 3474 callout_init_mtx(&sc->sc_ledtimer, &sc->sc_mtx, 0); 3475 3476 SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3477 "softled", CTLTYPE_INT | CTLFLAG_RW, sc, 0, 3478 iwi_sysctl_softled, "I", "enable/disable software LED support"); 3479 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3480 "ledpin", CTLFLAG_RW, &sc->sc_ledpin, 0, 3481 "pin setting to turn activity LED on"); 3482 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3483 "ledidle", CTLFLAG_RW, &sc->sc_ledidle, 0, 3484 "idle time for inactivity LED (ticks)"); 3485 /* XXX for debugging */ 3486 SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO, 3487 "nictype", CTLFLAG_RD, &sc->sc_nictype, 0, 3488 "NIC type from EEPROM"); 3489 3490 sc->sc_ledpin = IWI_RST_LED_ACTIVITY; 3491 sc->sc_softled = 1; 3492 3493 sc->sc_nictype = (iwi_read_prom_word(sc, IWI_EEPROM_NIC) >> 8) & 0xff; 3494 if (sc->sc_nictype == 1) { 3495 /* 3496 * NB: led's are reversed. 3497 */ 3498 sc->sc_ledpin = IWI_RST_LED_ASSOCIATED; 3499 } 3500} 3501 3502static void 3503iwi_scan_start(struct ieee80211com *ic) 3504{ 3505 /* ignore */ 3506} 3507 3508static void 3509iwi_set_channel(struct ieee80211com *ic) 3510{ 3511 struct ifnet *ifp = ic->ic_ifp; 3512 struct iwi_softc *sc = ifp->if_softc; 3513 if (sc->fw_state == IWI_FW_IDLE) 3514 iwi_setcurchan(sc, ic->ic_curchan->ic_ieee); 3515} 3516 3517static void 3518iwi_scan_curchan(struct ieee80211_scan_state *ss, unsigned long maxdwell) 3519{ 3520 struct ieee80211vap *vap = ss->ss_vap; 3521 struct ifnet *ifp = vap->iv_ic->ic_ifp; 3522 struct iwi_softc *sc = ifp->if_softc; 3523 IWI_LOCK_DECL; 3524 3525 IWI_LOCK(sc); 3526 if (iwi_scanchan(sc, maxdwell, 0)) 3527 ieee80211_cancel_scan(vap); 3528 IWI_UNLOCK(sc); 3529} 3530 3531static void 3532iwi_scan_mindwell(struct ieee80211_scan_state *ss) 3533{ 3534 /* NB: don't try to abort scan; wait for firmware to finish */ 3535} 3536 3537static void 3538iwi_scan_end(struct ieee80211com *ic) 3539{ 3540 struct ifnet *ifp = ic->ic_ifp; 3541 struct iwi_softc *sc = ifp->if_softc; 3542 IWI_LOCK_DECL; 3543 3544 IWI_LOCK(sc); 3545 sc->flags &= ~IWI_FLAG_CHANNEL_SCAN; 3546 /* NB: make sure we're still scanning */ 3547 if (sc->fw_state == IWI_FW_SCANNING) 3548 iwi_cmd(sc, IWI_CMD_ABORT_SCAN, NULL, 0); 3549 IWI_UNLOCK(sc); 3550} 3551