1 /* 2 * Copyright (c) 2008-2011 Atheros Communications Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17 #include <linux/nl80211.h> 18 #include <linux/delay.h> 19 #include "ath9k.h" 20 #include "btcoex.h" 21 22 u8 ath9k_parse_mpdudensity(u8 mpdudensity) 23 { 24 /* 25 * 802.11n D2.0 defined values for "Minimum MPDU Start Spacing": 26 * 0 for no restriction 27 * 1 for 1/4 us 28 * 2 for 1/2 us 29 * 3 for 1 us 30 * 4 for 2 us 31 * 5 for 4 us 32 * 6 for 8 us 33 * 7 for 16 us 34 */ 35 switch (mpdudensity) { 36 case 0: 37 return 0; 38 case 1: 39 case 2: 40 case 3: 41 /* Our lower layer calculations limit our precision to 42 1 microsecond */ 43 return 1; 44 case 4: 45 return 2; 46 case 5: 47 return 4; 48 case 6: 49 return 8; 50 case 7: 51 return 16; 52 default: 53 return 0; 54 } 55 } 56 57 static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq, 58 bool sw_pending) 59 { 60 bool pending = false; 61 62 spin_lock_bh(&txq->axq_lock); 63 64 if (txq->axq_depth) { 65 pending = true; 66 goto out; 67 } 68 69 if (!sw_pending) 70 goto out; 71 72 if (txq->mac80211_qnum >= 0) { 73 struct list_head *list; 74 75 list = &sc->cur_chan->acq[txq->mac80211_qnum]; 76 if (!list_empty(list)) 77 pending = true; 78 } 79 out: 80 spin_unlock_bh(&txq->axq_lock); 81 return pending; 82 } 83 84 static bool ath9k_setpower(struct ath_softc *sc, enum ath9k_power_mode mode) 85 { 86 unsigned long flags; 87 bool ret; 88 89 spin_lock_irqsave(&sc->sc_pm_lock, flags); 90 ret = ath9k_hw_setpower(sc->sc_ah, mode); 91 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 92 93 return ret; 94 } 95 96 void ath_ps_full_sleep(unsigned long data) 97 { 98 struct ath_softc *sc = (struct ath_softc *) data; 99 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 100 bool reset; 101 102 spin_lock(&common->cc_lock); 103 ath_hw_cycle_counters_update(common); 104 spin_unlock(&common->cc_lock); 105 106 ath9k_hw_setrxabort(sc->sc_ah, 1); 107 ath9k_hw_stopdmarecv(sc->sc_ah, &reset); 108 109 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_FULL_SLEEP); 110 } 111 112 void ath9k_ps_wakeup(struct ath_softc *sc) 113 { 114 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 115 unsigned long flags; 116 enum ath9k_power_mode power_mode; 117 118 spin_lock_irqsave(&sc->sc_pm_lock, flags); 119 if (++sc->ps_usecount != 1) 120 goto unlock; 121 122 del_timer_sync(&sc->sleep_timer); 123 power_mode = sc->sc_ah->power_mode; 124 ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_AWAKE); 125 126 /* 127 * While the hardware is asleep, the cycle counters contain no 128 * useful data. Better clear them now so that they don't mess up 129 * survey data results. 130 */ 131 if (power_mode != ATH9K_PM_AWAKE) { 132 spin_lock(&common->cc_lock); 133 ath_hw_cycle_counters_update(common); 134 memset(&common->cc_survey, 0, sizeof(common->cc_survey)); 135 memset(&common->cc_ani, 0, sizeof(common->cc_ani)); 136 spin_unlock(&common->cc_lock); 137 } 138 139 unlock: 140 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 141 } 142 143 void ath9k_ps_restore(struct ath_softc *sc) 144 { 145 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 146 enum ath9k_power_mode mode; 147 unsigned long flags; 148 149 spin_lock_irqsave(&sc->sc_pm_lock, flags); 150 if (--sc->ps_usecount != 0) 151 goto unlock; 152 153 if (sc->ps_idle) { 154 mod_timer(&sc->sleep_timer, jiffies + HZ / 10); 155 goto unlock; 156 } 157 158 if (sc->ps_enabled && 159 !(sc->ps_flags & (PS_WAIT_FOR_BEACON | 160 PS_WAIT_FOR_CAB | 161 PS_WAIT_FOR_PSPOLL_DATA | 162 PS_WAIT_FOR_TX_ACK | 163 PS_WAIT_FOR_ANI))) { 164 mode = ATH9K_PM_NETWORK_SLEEP; 165 if (ath9k_hw_btcoex_is_enabled(sc->sc_ah)) 166 ath9k_btcoex_stop_gen_timer(sc); 167 } else { 168 goto unlock; 169 } 170 171 spin_lock(&common->cc_lock); 172 ath_hw_cycle_counters_update(common); 173 spin_unlock(&common->cc_lock); 174 175 ath9k_hw_setpower(sc->sc_ah, mode); 176 177 unlock: 178 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 179 } 180 181 static void __ath_cancel_work(struct ath_softc *sc) 182 { 183 cancel_work_sync(&sc->paprd_work); 184 cancel_delayed_work_sync(&sc->tx_complete_work); 185 cancel_delayed_work_sync(&sc->hw_pll_work); 186 187 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT 188 if (ath9k_hw_mci_is_enabled(sc->sc_ah)) 189 cancel_work_sync(&sc->mci_work); 190 #endif 191 } 192 193 void ath_cancel_work(struct ath_softc *sc) 194 { 195 __ath_cancel_work(sc); 196 cancel_work_sync(&sc->hw_reset_work); 197 } 198 199 void ath_restart_work(struct ath_softc *sc) 200 { 201 ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work, 0); 202 203 if (AR_SREV_9340(sc->sc_ah) || AR_SREV_9330(sc->sc_ah)) 204 ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, 205 msecs_to_jiffies(ATH_PLL_WORK_INTERVAL)); 206 207 ath_start_ani(sc); 208 } 209 210 static bool ath_prepare_reset(struct ath_softc *sc) 211 { 212 struct ath_hw *ah = sc->sc_ah; 213 bool ret = true; 214 215 ieee80211_stop_queues(sc->hw); 216 ath_stop_ani(sc); 217 ath9k_hw_disable_interrupts(ah); 218 219 if (AR_SREV_9300_20_OR_LATER(ah)) { 220 ret &= ath_stoprecv(sc); 221 ret &= ath_drain_all_txq(sc); 222 } else { 223 ret &= ath_drain_all_txq(sc); 224 ret &= ath_stoprecv(sc); 225 } 226 227 return ret; 228 } 229 230 static bool ath_complete_reset(struct ath_softc *sc, bool start) 231 { 232 struct ath_hw *ah = sc->sc_ah; 233 struct ath_common *common = ath9k_hw_common(ah); 234 unsigned long flags; 235 236 ath9k_calculate_summary_state(sc, sc->cur_chan); 237 ath_startrecv(sc); 238 ath9k_cmn_update_txpow(ah, sc->cur_chan->cur_txpower, 239 sc->cur_chan->txpower, 240 &sc->cur_chan->cur_txpower); 241 clear_bit(ATH_OP_HW_RESET, &common->op_flags); 242 243 if (!sc->cur_chan->offchannel && start) { 244 /* restore per chanctx TSF timer */ 245 if (sc->cur_chan->tsf_val) { 246 u32 offset; 247 248 offset = ath9k_hw_get_tsf_offset(&sc->cur_chan->tsf_ts, 249 NULL); 250 ath9k_hw_settsf64(ah, sc->cur_chan->tsf_val + offset); 251 } 252 253 254 if (!test_bit(ATH_OP_BEACONS, &common->op_flags)) 255 goto work; 256 257 if (ah->opmode == NL80211_IFTYPE_STATION && 258 test_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags)) { 259 spin_lock_irqsave(&sc->sc_pm_lock, flags); 260 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; 261 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 262 } else { 263 ath9k_set_beacon(sc); 264 } 265 work: 266 ath_restart_work(sc); 267 ath_txq_schedule_all(sc); 268 } 269 270 sc->gtt_cnt = 0; 271 272 ath9k_hw_set_interrupts(ah); 273 ath9k_hw_enable_interrupts(ah); 274 ieee80211_wake_queues(sc->hw); 275 ath9k_p2p_ps_timer(sc); 276 277 return true; 278 } 279 280 static int ath_reset_internal(struct ath_softc *sc, struct ath9k_channel *hchan) 281 { 282 struct ath_hw *ah = sc->sc_ah; 283 struct ath_common *common = ath9k_hw_common(ah); 284 struct ath9k_hw_cal_data *caldata = NULL; 285 bool fastcc = true; 286 int r; 287 288 __ath_cancel_work(sc); 289 290 disable_irq(sc->irq); 291 tasklet_disable(&sc->intr_tq); 292 tasklet_disable(&sc->bcon_tasklet); 293 spin_lock_bh(&sc->sc_pcu_lock); 294 295 if (!sc->cur_chan->offchannel) { 296 fastcc = false; 297 caldata = &sc->cur_chan->caldata; 298 } 299 300 if (!hchan) { 301 fastcc = false; 302 hchan = ah->curchan; 303 } 304 305 if (!ath_prepare_reset(sc)) 306 fastcc = false; 307 308 if (ath9k_is_chanctx_enabled()) 309 fastcc = false; 310 311 spin_lock_bh(&sc->chan_lock); 312 sc->cur_chandef = sc->cur_chan->chandef; 313 spin_unlock_bh(&sc->chan_lock); 314 315 ath_dbg(common, CONFIG, "Reset to %u MHz, HT40: %d fastcc: %d\n", 316 hchan->channel, IS_CHAN_HT40(hchan), fastcc); 317 318 r = ath9k_hw_reset(ah, hchan, caldata, fastcc); 319 if (r) { 320 ath_err(common, 321 "Unable to reset channel, reset status %d\n", r); 322 323 ath9k_hw_enable_interrupts(ah); 324 ath9k_queue_reset(sc, RESET_TYPE_BB_HANG); 325 326 goto out; 327 } 328 329 if (ath9k_hw_mci_is_enabled(sc->sc_ah) && 330 sc->cur_chan->offchannel) 331 ath9k_mci_set_txpower(sc, true, false); 332 333 if (!ath_complete_reset(sc, true)) 334 r = -EIO; 335 336 out: 337 enable_irq(sc->irq); 338 spin_unlock_bh(&sc->sc_pcu_lock); 339 tasklet_enable(&sc->bcon_tasklet); 340 tasklet_enable(&sc->intr_tq); 341 342 return r; 343 } 344 345 static void ath_node_attach(struct ath_softc *sc, struct ieee80211_sta *sta, 346 struct ieee80211_vif *vif) 347 { 348 struct ath_node *an; 349 an = (struct ath_node *)sta->drv_priv; 350 351 an->sc = sc; 352 an->sta = sta; 353 an->vif = vif; 354 memset(&an->key_idx, 0, sizeof(an->key_idx)); 355 356 ath_tx_node_init(sc, an); 357 358 ath_dynack_node_init(sc->sc_ah, an); 359 } 360 361 static void ath_node_detach(struct ath_softc *sc, struct ieee80211_sta *sta) 362 { 363 struct ath_node *an = (struct ath_node *)sta->drv_priv; 364 ath_tx_node_cleanup(sc, an); 365 366 ath_dynack_node_deinit(sc->sc_ah, an); 367 } 368 369 void ath9k_tasklet(unsigned long data) 370 { 371 struct ath_softc *sc = (struct ath_softc *)data; 372 struct ath_hw *ah = sc->sc_ah; 373 struct ath_common *common = ath9k_hw_common(ah); 374 enum ath_reset_type type; 375 unsigned long flags; 376 u32 status = sc->intrstatus; 377 u32 rxmask; 378 379 ath9k_ps_wakeup(sc); 380 spin_lock(&sc->sc_pcu_lock); 381 382 if (status & ATH9K_INT_FATAL) { 383 type = RESET_TYPE_FATAL_INT; 384 ath9k_queue_reset(sc, type); 385 386 /* 387 * Increment the ref. counter here so that 388 * interrupts are enabled in the reset routine. 389 */ 390 atomic_inc(&ah->intr_ref_cnt); 391 ath_dbg(common, RESET, "FATAL: Skipping interrupts\n"); 392 goto out; 393 } 394 395 if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && 396 (status & ATH9K_INT_BB_WATCHDOG)) { 397 spin_lock(&common->cc_lock); 398 ath_hw_cycle_counters_update(common); 399 ar9003_hw_bb_watchdog_dbg_info(ah); 400 spin_unlock(&common->cc_lock); 401 402 if (ar9003_hw_bb_watchdog_check(ah)) { 403 type = RESET_TYPE_BB_WATCHDOG; 404 ath9k_queue_reset(sc, type); 405 406 /* 407 * Increment the ref. counter here so that 408 * interrupts are enabled in the reset routine. 409 */ 410 atomic_inc(&ah->intr_ref_cnt); 411 ath_dbg(common, RESET, 412 "BB_WATCHDOG: Skipping interrupts\n"); 413 goto out; 414 } 415 } 416 417 if (status & ATH9K_INT_GTT) { 418 sc->gtt_cnt++; 419 420 if ((sc->gtt_cnt >= MAX_GTT_CNT) && !ath9k_hw_check_alive(ah)) { 421 type = RESET_TYPE_TX_GTT; 422 ath9k_queue_reset(sc, type); 423 atomic_inc(&ah->intr_ref_cnt); 424 ath_dbg(common, RESET, 425 "GTT: Skipping interrupts\n"); 426 goto out; 427 } 428 } 429 430 spin_lock_irqsave(&sc->sc_pm_lock, flags); 431 if ((status & ATH9K_INT_TSFOOR) && sc->ps_enabled) { 432 /* 433 * TSF sync does not look correct; remain awake to sync with 434 * the next Beacon. 435 */ 436 ath_dbg(common, PS, "TSFOOR - Sync with next Beacon\n"); 437 sc->ps_flags |= PS_WAIT_FOR_BEACON | PS_BEACON_SYNC; 438 } 439 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 440 441 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) 442 rxmask = (ATH9K_INT_RXHP | ATH9K_INT_RXLP | ATH9K_INT_RXEOL | 443 ATH9K_INT_RXORN); 444 else 445 rxmask = (ATH9K_INT_RX | ATH9K_INT_RXEOL | ATH9K_INT_RXORN); 446 447 if (status & rxmask) { 448 /* Check for high priority Rx first */ 449 if ((ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) && 450 (status & ATH9K_INT_RXHP)) 451 ath_rx_tasklet(sc, 0, true); 452 453 ath_rx_tasklet(sc, 0, false); 454 } 455 456 if (status & ATH9K_INT_TX) { 457 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) { 458 /* 459 * For EDMA chips, TX completion is enabled for the 460 * beacon queue, so if a beacon has been transmitted 461 * successfully after a GTT interrupt, the GTT counter 462 * gets reset to zero here. 463 */ 464 sc->gtt_cnt = 0; 465 466 ath_tx_edma_tasklet(sc); 467 } else { 468 ath_tx_tasklet(sc); 469 } 470 471 wake_up(&sc->tx_wait); 472 } 473 474 if (status & ATH9K_INT_GENTIMER) 475 ath_gen_timer_isr(sc->sc_ah); 476 477 ath9k_btcoex_handle_interrupt(sc, status); 478 479 /* re-enable hardware interrupt */ 480 ath9k_hw_enable_interrupts(ah); 481 out: 482 spin_unlock(&sc->sc_pcu_lock); 483 ath9k_ps_restore(sc); 484 } 485 486 irqreturn_t ath_isr(int irq, void *dev) 487 { 488 #define SCHED_INTR ( \ 489 ATH9K_INT_FATAL | \ 490 ATH9K_INT_BB_WATCHDOG | \ 491 ATH9K_INT_RXORN | \ 492 ATH9K_INT_RXEOL | \ 493 ATH9K_INT_RX | \ 494 ATH9K_INT_RXLP | \ 495 ATH9K_INT_RXHP | \ 496 ATH9K_INT_TX | \ 497 ATH9K_INT_BMISS | \ 498 ATH9K_INT_CST | \ 499 ATH9K_INT_GTT | \ 500 ATH9K_INT_TSFOOR | \ 501 ATH9K_INT_GENTIMER | \ 502 ATH9K_INT_MCI) 503 504 struct ath_softc *sc = dev; 505 struct ath_hw *ah = sc->sc_ah; 506 struct ath_common *common = ath9k_hw_common(ah); 507 enum ath9k_int status; 508 u32 sync_cause = 0; 509 bool sched = false; 510 511 /* 512 * The hardware is not ready/present, don't 513 * touch anything. Note this can happen early 514 * on if the IRQ is shared. 515 */ 516 if (!ah || test_bit(ATH_OP_INVALID, &common->op_flags)) 517 return IRQ_NONE; 518 519 /* shared irq, not for us */ 520 if (!ath9k_hw_intrpend(ah)) 521 return IRQ_NONE; 522 523 /* 524 * Figure out the reason(s) for the interrupt. Note 525 * that the hal returns a pseudo-ISR that may include 526 * bits we haven't explicitly enabled so we mask the 527 * value to insure we only process bits we requested. 528 */ 529 ath9k_hw_getisr(ah, &status, &sync_cause); /* NB: clears ISR too */ 530 ath9k_debug_sync_cause(sc, sync_cause); 531 status &= ah->imask; /* discard unasked-for bits */ 532 533 if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) 534 return IRQ_HANDLED; 535 536 /* 537 * If there are no status bits set, then this interrupt was not 538 * for me (should have been caught above). 539 */ 540 if (!status) 541 return IRQ_NONE; 542 543 /* Cache the status */ 544 sc->intrstatus = status; 545 546 if (status & SCHED_INTR) 547 sched = true; 548 549 /* 550 * If a FATAL interrupt is received, we have to reset the chip 551 * immediately. 552 */ 553 if (status & ATH9K_INT_FATAL) 554 goto chip_reset; 555 556 if ((ah->config.hw_hang_checks & HW_BB_WATCHDOG) && 557 (status & ATH9K_INT_BB_WATCHDOG)) 558 goto chip_reset; 559 560 if (status & ATH9K_INT_SWBA) 561 tasklet_schedule(&sc->bcon_tasklet); 562 563 if (status & ATH9K_INT_TXURN) 564 ath9k_hw_updatetxtriglevel(ah, true); 565 566 if (status & ATH9K_INT_RXEOL) { 567 ah->imask &= ~(ATH9K_INT_RXEOL | ATH9K_INT_RXORN); 568 ath9k_hw_set_interrupts(ah); 569 } 570 571 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) 572 if (status & ATH9K_INT_TIM_TIMER) { 573 if (ATH_DBG_WARN_ON_ONCE(sc->ps_idle)) 574 goto chip_reset; 575 /* Clear RxAbort bit so that we can 576 * receive frames */ 577 ath9k_setpower(sc, ATH9K_PM_AWAKE); 578 spin_lock(&sc->sc_pm_lock); 579 ath9k_hw_setrxabort(sc->sc_ah, 0); 580 sc->ps_flags |= PS_WAIT_FOR_BEACON; 581 spin_unlock(&sc->sc_pm_lock); 582 } 583 584 chip_reset: 585 586 ath_debug_stat_interrupt(sc, status); 587 588 if (sched) { 589 /* turn off every interrupt */ 590 ath9k_hw_disable_interrupts(ah); 591 tasklet_schedule(&sc->intr_tq); 592 } 593 594 return IRQ_HANDLED; 595 596 #undef SCHED_INTR 597 } 598 599 /* 600 * This function is called when a HW reset cannot be deferred 601 * and has to be immediate. 602 */ 603 int ath_reset(struct ath_softc *sc, struct ath9k_channel *hchan) 604 { 605 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 606 int r; 607 608 ath9k_hw_kill_interrupts(sc->sc_ah); 609 set_bit(ATH_OP_HW_RESET, &common->op_flags); 610 611 ath9k_ps_wakeup(sc); 612 r = ath_reset_internal(sc, hchan); 613 ath9k_ps_restore(sc); 614 615 return r; 616 } 617 618 /* 619 * When a HW reset can be deferred, it is added to the 620 * hw_reset_work workqueue, but we set ATH_OP_HW_RESET before 621 * queueing. 622 */ 623 void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type) 624 { 625 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 626 #ifdef CONFIG_ATH9K_DEBUGFS 627 RESET_STAT_INC(sc, type); 628 #endif 629 ath9k_hw_kill_interrupts(sc->sc_ah); 630 set_bit(ATH_OP_HW_RESET, &common->op_flags); 631 ieee80211_queue_work(sc->hw, &sc->hw_reset_work); 632 } 633 634 void ath_reset_work(struct work_struct *work) 635 { 636 struct ath_softc *sc = container_of(work, struct ath_softc, hw_reset_work); 637 638 ath9k_ps_wakeup(sc); 639 ath_reset_internal(sc, NULL); 640 ath9k_ps_restore(sc); 641 } 642 643 /**********************/ 644 /* mac80211 callbacks */ 645 /**********************/ 646 647 static int ath9k_start(struct ieee80211_hw *hw) 648 { 649 struct ath_softc *sc = hw->priv; 650 struct ath_hw *ah = sc->sc_ah; 651 struct ath_common *common = ath9k_hw_common(ah); 652 struct ieee80211_channel *curchan = sc->cur_chan->chandef.chan; 653 struct ath_chanctx *ctx = sc->cur_chan; 654 struct ath9k_channel *init_channel; 655 int r; 656 657 ath_dbg(common, CONFIG, 658 "Starting driver with initial channel: %d MHz\n", 659 curchan->center_freq); 660 661 ath9k_ps_wakeup(sc); 662 mutex_lock(&sc->mutex); 663 664 init_channel = ath9k_cmn_get_channel(hw, ah, &ctx->chandef); 665 sc->cur_chandef = hw->conf.chandef; 666 667 /* Reset SERDES registers */ 668 ath9k_hw_configpcipowersave(ah, false); 669 670 /* 671 * The basic interface to setting the hardware in a good 672 * state is ``reset''. On return the hardware is known to 673 * be powered up and with interrupts disabled. This must 674 * be followed by initialization of the appropriate bits 675 * and then setup of the interrupt mask. 676 */ 677 spin_lock_bh(&sc->sc_pcu_lock); 678 679 atomic_set(&ah->intr_ref_cnt, -1); 680 681 r = ath9k_hw_reset(ah, init_channel, ah->caldata, false); 682 if (r) { 683 ath_err(common, 684 "Unable to reset hardware; reset status %d (freq %u MHz)\n", 685 r, curchan->center_freq); 686 ah->reset_power_on = false; 687 } 688 689 /* Setup our intr mask. */ 690 ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL | 691 ATH9K_INT_RXORN | ATH9K_INT_FATAL | 692 ATH9K_INT_GLOBAL; 693 694 if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) 695 ah->imask |= ATH9K_INT_RXHP | 696 ATH9K_INT_RXLP; 697 else 698 ah->imask |= ATH9K_INT_RX; 699 700 if (ah->config.hw_hang_checks & HW_BB_WATCHDOG) 701 ah->imask |= ATH9K_INT_BB_WATCHDOG; 702 703 /* 704 * Enable GTT interrupts only for AR9003/AR9004 chips 705 * for now. 706 */ 707 if (AR_SREV_9300_20_OR_LATER(ah)) 708 ah->imask |= ATH9K_INT_GTT; 709 710 if (ah->caps.hw_caps & ATH9K_HW_CAP_HT) 711 ah->imask |= ATH9K_INT_CST; 712 713 ath_mci_enable(sc); 714 715 clear_bit(ATH_OP_INVALID, &common->op_flags); 716 sc->sc_ah->is_monitoring = false; 717 718 if (!ath_complete_reset(sc, false)) 719 ah->reset_power_on = false; 720 721 if (ah->led_pin >= 0) 722 ath9k_hw_set_gpio(ah, ah->led_pin, 723 (ah->config.led_active_high) ? 1 : 0); 724 725 /* 726 * Reset key cache to sane defaults (all entries cleared) instead of 727 * semi-random values after suspend/resume. 728 */ 729 ath9k_cmn_init_crypto(sc->sc_ah); 730 731 ath9k_hw_reset_tsf(ah); 732 733 spin_unlock_bh(&sc->sc_pcu_lock); 734 735 mutex_unlock(&sc->mutex); 736 737 ath9k_ps_restore(sc); 738 739 ath9k_rng_start(sc); 740 741 return 0; 742 } 743 744 static void ath9k_tx(struct ieee80211_hw *hw, 745 struct ieee80211_tx_control *control, 746 struct sk_buff *skb) 747 { 748 struct ath_softc *sc = hw->priv; 749 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 750 struct ath_tx_control txctl; 751 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data; 752 unsigned long flags; 753 754 if (sc->ps_enabled) { 755 /* 756 * mac80211 does not set PM field for normal data frames, so we 757 * need to update that based on the current PS mode. 758 */ 759 if (ieee80211_is_data(hdr->frame_control) && 760 !ieee80211_is_nullfunc(hdr->frame_control) && 761 !ieee80211_has_pm(hdr->frame_control)) { 762 ath_dbg(common, PS, 763 "Add PM=1 for a TX frame while in PS mode\n"); 764 hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 765 } 766 } 767 768 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_NETWORK_SLEEP)) { 769 /* 770 * We are using PS-Poll and mac80211 can request TX while in 771 * power save mode. Need to wake up hardware for the TX to be 772 * completed and if needed, also for RX of buffered frames. 773 */ 774 ath9k_ps_wakeup(sc); 775 spin_lock_irqsave(&sc->sc_pm_lock, flags); 776 if (!(sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) 777 ath9k_hw_setrxabort(sc->sc_ah, 0); 778 if (ieee80211_is_pspoll(hdr->frame_control)) { 779 ath_dbg(common, PS, 780 "Sending PS-Poll to pick a buffered frame\n"); 781 sc->ps_flags |= PS_WAIT_FOR_PSPOLL_DATA; 782 } else { 783 ath_dbg(common, PS, "Wake up to complete TX\n"); 784 sc->ps_flags |= PS_WAIT_FOR_TX_ACK; 785 } 786 /* 787 * The actual restore operation will happen only after 788 * the ps_flags bit is cleared. We are just dropping 789 * the ps_usecount here. 790 */ 791 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 792 ath9k_ps_restore(sc); 793 } 794 795 /* 796 * Cannot tx while the hardware is in full sleep, it first needs a full 797 * chip reset to recover from that 798 */ 799 if (unlikely(sc->sc_ah->power_mode == ATH9K_PM_FULL_SLEEP)) { 800 ath_err(common, "TX while HW is in FULL_SLEEP mode\n"); 801 goto exit; 802 } 803 804 memset(&txctl, 0, sizeof(struct ath_tx_control)); 805 txctl.txq = sc->tx.txq_map[skb_get_queue_mapping(skb)]; 806 txctl.sta = control->sta; 807 808 ath_dbg(common, XMIT, "transmitting packet, skb: %p\n", skb); 809 810 if (ath_tx_start(hw, skb, &txctl) != 0) { 811 ath_dbg(common, XMIT, "TX failed\n"); 812 TX_STAT_INC(txctl.txq->axq_qnum, txfailed); 813 goto exit; 814 } 815 816 return; 817 exit: 818 ieee80211_free_txskb(hw, skb); 819 } 820 821 static void ath9k_stop(struct ieee80211_hw *hw) 822 { 823 struct ath_softc *sc = hw->priv; 824 struct ath_hw *ah = sc->sc_ah; 825 struct ath_common *common = ath9k_hw_common(ah); 826 bool prev_idle; 827 828 ath9k_deinit_channel_context(sc); 829 830 ath9k_rng_stop(sc); 831 832 mutex_lock(&sc->mutex); 833 834 ath_cancel_work(sc); 835 836 if (test_bit(ATH_OP_INVALID, &common->op_flags)) { 837 ath_dbg(common, ANY, "Device not present\n"); 838 mutex_unlock(&sc->mutex); 839 return; 840 } 841 842 /* Ensure HW is awake when we try to shut it down. */ 843 ath9k_ps_wakeup(sc); 844 845 spin_lock_bh(&sc->sc_pcu_lock); 846 847 /* prevent tasklets to enable interrupts once we disable them */ 848 ah->imask &= ~ATH9K_INT_GLOBAL; 849 850 /* make sure h/w will not generate any interrupt 851 * before setting the invalid flag. */ 852 ath9k_hw_disable_interrupts(ah); 853 854 spin_unlock_bh(&sc->sc_pcu_lock); 855 856 /* we can now sync irq and kill any running tasklets, since we already 857 * disabled interrupts and not holding a spin lock */ 858 synchronize_irq(sc->irq); 859 tasklet_kill(&sc->intr_tq); 860 tasklet_kill(&sc->bcon_tasklet); 861 862 prev_idle = sc->ps_idle; 863 sc->ps_idle = true; 864 865 spin_lock_bh(&sc->sc_pcu_lock); 866 867 if (ah->led_pin >= 0) 868 ath9k_hw_set_gpio(ah, ah->led_pin, 869 (ah->config.led_active_high) ? 0 : 1); 870 871 ath_prepare_reset(sc); 872 873 if (sc->rx.frag) { 874 dev_kfree_skb_any(sc->rx.frag); 875 sc->rx.frag = NULL; 876 } 877 878 if (!ah->curchan) 879 ah->curchan = ath9k_cmn_get_channel(hw, ah, 880 &sc->cur_chan->chandef); 881 882 ath9k_hw_reset(ah, ah->curchan, ah->caldata, false); 883 884 set_bit(ATH_OP_INVALID, &common->op_flags); 885 886 ath9k_hw_phy_disable(ah); 887 888 ath9k_hw_configpcipowersave(ah, true); 889 890 spin_unlock_bh(&sc->sc_pcu_lock); 891 892 ath9k_ps_restore(sc); 893 894 sc->ps_idle = prev_idle; 895 896 mutex_unlock(&sc->mutex); 897 898 ath_dbg(common, CONFIG, "Driver halt\n"); 899 } 900 901 static bool ath9k_uses_beacons(int type) 902 { 903 switch (type) { 904 case NL80211_IFTYPE_AP: 905 case NL80211_IFTYPE_ADHOC: 906 case NL80211_IFTYPE_MESH_POINT: 907 return true; 908 default: 909 return false; 910 } 911 } 912 913 static void ath9k_vif_iter(struct ath9k_vif_iter_data *iter_data, 914 u8 *mac, struct ieee80211_vif *vif) 915 { 916 struct ath_vif *avp = (struct ath_vif *)vif->drv_priv; 917 int i; 918 919 if (iter_data->has_hw_macaddr) { 920 for (i = 0; i < ETH_ALEN; i++) 921 iter_data->mask[i] &= 922 ~(iter_data->hw_macaddr[i] ^ mac[i]); 923 } else { 924 memcpy(iter_data->hw_macaddr, mac, ETH_ALEN); 925 iter_data->has_hw_macaddr = true; 926 } 927 928 if (!vif->bss_conf.use_short_slot) 929 iter_data->slottime = ATH9K_SLOT_TIME_20; 930 931 switch (vif->type) { 932 case NL80211_IFTYPE_AP: 933 iter_data->naps++; 934 break; 935 case NL80211_IFTYPE_STATION: 936 iter_data->nstations++; 937 if (avp->assoc && !iter_data->primary_sta) 938 iter_data->primary_sta = vif; 939 break; 940 case NL80211_IFTYPE_OCB: 941 iter_data->nocbs++; 942 break; 943 case NL80211_IFTYPE_ADHOC: 944 iter_data->nadhocs++; 945 if (vif->bss_conf.enable_beacon) 946 iter_data->beacons = true; 947 break; 948 case NL80211_IFTYPE_MESH_POINT: 949 iter_data->nmeshes++; 950 if (vif->bss_conf.enable_beacon) 951 iter_data->beacons = true; 952 break; 953 case NL80211_IFTYPE_WDS: 954 iter_data->nwds++; 955 break; 956 default: 957 break; 958 } 959 } 960 961 static void ath9k_update_bssid_mask(struct ath_softc *sc, 962 struct ath_chanctx *ctx, 963 struct ath9k_vif_iter_data *iter_data) 964 { 965 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 966 struct ath_vif *avp; 967 int i; 968 969 if (!ath9k_is_chanctx_enabled()) 970 return; 971 972 list_for_each_entry(avp, &ctx->vifs, list) { 973 if (ctx->nvifs_assigned != 1) 974 continue; 975 976 if (!iter_data->has_hw_macaddr) 977 continue; 978 979 ether_addr_copy(common->curbssid, avp->bssid); 980 981 /* perm_addr will be used as the p2p device address. */ 982 for (i = 0; i < ETH_ALEN; i++) 983 iter_data->mask[i] &= 984 ~(iter_data->hw_macaddr[i] ^ 985 sc->hw->wiphy->perm_addr[i]); 986 } 987 } 988 989 /* Called with sc->mutex held. */ 990 void ath9k_calculate_iter_data(struct ath_softc *sc, 991 struct ath_chanctx *ctx, 992 struct ath9k_vif_iter_data *iter_data) 993 { 994 struct ath_vif *avp; 995 996 /* 997 * The hardware will use primary station addr together with the 998 * BSSID mask when matching addresses. 999 */ 1000 memset(iter_data, 0, sizeof(*iter_data)); 1001 eth_broadcast_addr(iter_data->mask); 1002 iter_data->slottime = ATH9K_SLOT_TIME_9; 1003 1004 list_for_each_entry(avp, &ctx->vifs, list) 1005 ath9k_vif_iter(iter_data, avp->vif->addr, avp->vif); 1006 1007 ath9k_update_bssid_mask(sc, ctx, iter_data); 1008 } 1009 1010 static void ath9k_set_assoc_state(struct ath_softc *sc, 1011 struct ieee80211_vif *vif, bool changed) 1012 { 1013 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1014 struct ath_vif *avp = (struct ath_vif *)vif->drv_priv; 1015 unsigned long flags; 1016 1017 set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); 1018 1019 ether_addr_copy(common->curbssid, avp->bssid); 1020 common->curaid = avp->aid; 1021 ath9k_hw_write_associd(sc->sc_ah); 1022 1023 if (changed) { 1024 common->last_rssi = ATH_RSSI_DUMMY_MARKER; 1025 sc->sc_ah->stats.avgbrssi = ATH_RSSI_DUMMY_MARKER; 1026 1027 spin_lock_irqsave(&sc->sc_pm_lock, flags); 1028 sc->ps_flags |= PS_BEACON_SYNC | PS_WAIT_FOR_BEACON; 1029 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 1030 } 1031 1032 if (ath9k_hw_mci_is_enabled(sc->sc_ah)) 1033 ath9k_mci_update_wlan_channels(sc, false); 1034 1035 ath_dbg(common, CONFIG, 1036 "Primary Station interface: %pM, BSSID: %pM\n", 1037 vif->addr, common->curbssid); 1038 } 1039 1040 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1041 static void ath9k_set_offchannel_state(struct ath_softc *sc) 1042 { 1043 struct ath_hw *ah = sc->sc_ah; 1044 struct ath_common *common = ath9k_hw_common(ah); 1045 struct ieee80211_vif *vif = NULL; 1046 1047 ath9k_ps_wakeup(sc); 1048 1049 if (sc->offchannel.state < ATH_OFFCHANNEL_ROC_START) 1050 vif = sc->offchannel.scan_vif; 1051 else 1052 vif = sc->offchannel.roc_vif; 1053 1054 if (WARN_ON(!vif)) 1055 goto exit; 1056 1057 eth_zero_addr(common->curbssid); 1058 eth_broadcast_addr(common->bssidmask); 1059 memcpy(common->macaddr, vif->addr, ETH_ALEN); 1060 common->curaid = 0; 1061 ah->opmode = vif->type; 1062 ah->imask &= ~ATH9K_INT_SWBA; 1063 ah->imask &= ~ATH9K_INT_TSFOOR; 1064 ah->slottime = ATH9K_SLOT_TIME_9; 1065 1066 ath_hw_setbssidmask(common); 1067 ath9k_hw_setopmode(ah); 1068 ath9k_hw_write_associd(sc->sc_ah); 1069 ath9k_hw_set_interrupts(ah); 1070 ath9k_hw_init_global_settings(ah); 1071 1072 exit: 1073 ath9k_ps_restore(sc); 1074 } 1075 #endif 1076 1077 /* Called with sc->mutex held. */ 1078 void ath9k_calculate_summary_state(struct ath_softc *sc, 1079 struct ath_chanctx *ctx) 1080 { 1081 struct ath_hw *ah = sc->sc_ah; 1082 struct ath_common *common = ath9k_hw_common(ah); 1083 struct ath9k_vif_iter_data iter_data; 1084 struct ath_beacon_config *cur_conf; 1085 1086 ath_chanctx_check_active(sc, ctx); 1087 1088 if (ctx != sc->cur_chan) 1089 return; 1090 1091 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1092 if (ctx == &sc->offchannel.chan) 1093 return ath9k_set_offchannel_state(sc); 1094 #endif 1095 1096 ath9k_ps_wakeup(sc); 1097 ath9k_calculate_iter_data(sc, ctx, &iter_data); 1098 1099 if (iter_data.has_hw_macaddr) 1100 memcpy(common->macaddr, iter_data.hw_macaddr, ETH_ALEN); 1101 1102 memcpy(common->bssidmask, iter_data.mask, ETH_ALEN); 1103 ath_hw_setbssidmask(common); 1104 1105 if (iter_data.naps > 0) { 1106 cur_conf = &ctx->beacon; 1107 ath9k_hw_set_tsfadjust(ah, true); 1108 ah->opmode = NL80211_IFTYPE_AP; 1109 if (cur_conf->enable_beacon) 1110 iter_data.beacons = true; 1111 } else { 1112 ath9k_hw_set_tsfadjust(ah, false); 1113 1114 if (iter_data.nmeshes) 1115 ah->opmode = NL80211_IFTYPE_MESH_POINT; 1116 else if (iter_data.nocbs) 1117 ah->opmode = NL80211_IFTYPE_OCB; 1118 else if (iter_data.nwds) 1119 ah->opmode = NL80211_IFTYPE_AP; 1120 else if (iter_data.nadhocs) 1121 ah->opmode = NL80211_IFTYPE_ADHOC; 1122 else 1123 ah->opmode = NL80211_IFTYPE_STATION; 1124 } 1125 1126 ath9k_hw_setopmode(ah); 1127 1128 ctx->switch_after_beacon = false; 1129 if ((iter_data.nstations + iter_data.nadhocs + iter_data.nmeshes) > 0) 1130 ah->imask |= ATH9K_INT_TSFOOR; 1131 else { 1132 ah->imask &= ~ATH9K_INT_TSFOOR; 1133 if (iter_data.naps == 1 && iter_data.beacons) 1134 ctx->switch_after_beacon = true; 1135 } 1136 1137 ah->imask &= ~ATH9K_INT_SWBA; 1138 if (ah->opmode == NL80211_IFTYPE_STATION) { 1139 bool changed = (iter_data.primary_sta != ctx->primary_sta); 1140 1141 if (iter_data.primary_sta) { 1142 iter_data.beacons = true; 1143 ath9k_set_assoc_state(sc, iter_data.primary_sta, 1144 changed); 1145 ctx->primary_sta = iter_data.primary_sta; 1146 } else { 1147 ctx->primary_sta = NULL; 1148 eth_zero_addr(common->curbssid); 1149 common->curaid = 0; 1150 ath9k_hw_write_associd(sc->sc_ah); 1151 if (ath9k_hw_mci_is_enabled(sc->sc_ah)) 1152 ath9k_mci_update_wlan_channels(sc, true); 1153 } 1154 } else if (iter_data.beacons) { 1155 ah->imask |= ATH9K_INT_SWBA; 1156 } 1157 ath9k_hw_set_interrupts(ah); 1158 1159 if (iter_data.beacons) 1160 set_bit(ATH_OP_BEACONS, &common->op_flags); 1161 else 1162 clear_bit(ATH_OP_BEACONS, &common->op_flags); 1163 1164 if (ah->slottime != iter_data.slottime) { 1165 ah->slottime = iter_data.slottime; 1166 ath9k_hw_init_global_settings(ah); 1167 } 1168 1169 if (iter_data.primary_sta) 1170 set_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); 1171 else 1172 clear_bit(ATH_OP_PRIM_STA_VIF, &common->op_flags); 1173 1174 ath_dbg(common, CONFIG, 1175 "macaddr: %pM, bssid: %pM, bssidmask: %pM\n", 1176 common->macaddr, common->curbssid, common->bssidmask); 1177 1178 ath9k_ps_restore(sc); 1179 } 1180 1181 static void ath9k_tpc_vif_iter(void *data, u8 *mac, struct ieee80211_vif *vif) 1182 { 1183 int *power = (int *)data; 1184 1185 if (*power < vif->bss_conf.txpower) 1186 *power = vif->bss_conf.txpower; 1187 } 1188 1189 /* Called with sc->mutex held. */ 1190 void ath9k_set_txpower(struct ath_softc *sc, struct ieee80211_vif *vif) 1191 { 1192 int power; 1193 struct ath_hw *ah = sc->sc_ah; 1194 struct ath_regulatory *reg = ath9k_hw_regulatory(ah); 1195 1196 ath9k_ps_wakeup(sc); 1197 if (ah->tpc_enabled) { 1198 power = (vif) ? vif->bss_conf.txpower : -1; 1199 ieee80211_iterate_active_interfaces_atomic( 1200 sc->hw, IEEE80211_IFACE_ITER_RESUME_ALL, 1201 ath9k_tpc_vif_iter, &power); 1202 if (power == -1) 1203 power = sc->hw->conf.power_level; 1204 } else { 1205 power = sc->hw->conf.power_level; 1206 } 1207 sc->cur_chan->txpower = 2 * power; 1208 ath9k_hw_set_txpowerlimit(ah, sc->cur_chan->txpower, false); 1209 sc->cur_chan->cur_txpower = reg->max_power_level; 1210 ath9k_ps_restore(sc); 1211 } 1212 1213 static void ath9k_assign_hw_queues(struct ieee80211_hw *hw, 1214 struct ieee80211_vif *vif) 1215 { 1216 int i; 1217 1218 if (!ath9k_is_chanctx_enabled()) 1219 return; 1220 1221 for (i = 0; i < IEEE80211_NUM_ACS; i++) 1222 vif->hw_queue[i] = i; 1223 1224 if (vif->type == NL80211_IFTYPE_AP || 1225 vif->type == NL80211_IFTYPE_MESH_POINT) 1226 vif->cab_queue = hw->queues - 2; 1227 else 1228 vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; 1229 } 1230 1231 static int ath9k_add_interface(struct ieee80211_hw *hw, 1232 struct ieee80211_vif *vif) 1233 { 1234 struct ath_softc *sc = hw->priv; 1235 struct ath_hw *ah = sc->sc_ah; 1236 struct ath_common *common = ath9k_hw_common(ah); 1237 struct ath_vif *avp = (void *)vif->drv_priv; 1238 struct ath_node *an = &avp->mcast_node; 1239 1240 mutex_lock(&sc->mutex); 1241 1242 if (config_enabled(CONFIG_ATH9K_TX99)) { 1243 if (sc->cur_chan->nvifs >= 1) { 1244 mutex_unlock(&sc->mutex); 1245 return -EOPNOTSUPP; 1246 } 1247 sc->tx99_vif = vif; 1248 } 1249 1250 ath_dbg(common, CONFIG, "Attach a VIF of type: %d\n", vif->type); 1251 sc->cur_chan->nvifs++; 1252 1253 if (vif->type == NL80211_IFTYPE_STATION && ath9k_is_chanctx_enabled()) 1254 vif->driver_flags |= IEEE80211_VIF_GET_NOA_UPDATE; 1255 1256 if (ath9k_uses_beacons(vif->type)) 1257 ath9k_beacon_assign_slot(sc, vif); 1258 1259 avp->vif = vif; 1260 if (!ath9k_is_chanctx_enabled()) { 1261 avp->chanctx = sc->cur_chan; 1262 list_add_tail(&avp->list, &avp->chanctx->vifs); 1263 } 1264 1265 ath9k_calculate_summary_state(sc, avp->chanctx); 1266 1267 ath9k_assign_hw_queues(hw, vif); 1268 1269 ath9k_set_txpower(sc, vif); 1270 1271 an->sc = sc; 1272 an->sta = NULL; 1273 an->vif = vif; 1274 an->no_ps_filter = true; 1275 ath_tx_node_init(sc, an); 1276 1277 mutex_unlock(&sc->mutex); 1278 return 0; 1279 } 1280 1281 static int ath9k_change_interface(struct ieee80211_hw *hw, 1282 struct ieee80211_vif *vif, 1283 enum nl80211_iftype new_type, 1284 bool p2p) 1285 { 1286 struct ath_softc *sc = hw->priv; 1287 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1288 struct ath_vif *avp = (void *)vif->drv_priv; 1289 1290 mutex_lock(&sc->mutex); 1291 1292 if (config_enabled(CONFIG_ATH9K_TX99)) { 1293 mutex_unlock(&sc->mutex); 1294 return -EOPNOTSUPP; 1295 } 1296 1297 ath_dbg(common, CONFIG, "Change Interface\n"); 1298 1299 if (ath9k_uses_beacons(vif->type)) 1300 ath9k_beacon_remove_slot(sc, vif); 1301 1302 vif->type = new_type; 1303 vif->p2p = p2p; 1304 1305 if (ath9k_uses_beacons(vif->type)) 1306 ath9k_beacon_assign_slot(sc, vif); 1307 1308 ath9k_assign_hw_queues(hw, vif); 1309 ath9k_calculate_summary_state(sc, avp->chanctx); 1310 1311 ath9k_set_txpower(sc, vif); 1312 1313 mutex_unlock(&sc->mutex); 1314 return 0; 1315 } 1316 1317 static void ath9k_remove_interface(struct ieee80211_hw *hw, 1318 struct ieee80211_vif *vif) 1319 { 1320 struct ath_softc *sc = hw->priv; 1321 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1322 struct ath_vif *avp = (void *)vif->drv_priv; 1323 1324 ath_dbg(common, CONFIG, "Detach Interface\n"); 1325 1326 mutex_lock(&sc->mutex); 1327 1328 ath9k_p2p_remove_vif(sc, vif); 1329 1330 sc->cur_chan->nvifs--; 1331 sc->tx99_vif = NULL; 1332 if (!ath9k_is_chanctx_enabled()) 1333 list_del(&avp->list); 1334 1335 if (ath9k_uses_beacons(vif->type)) 1336 ath9k_beacon_remove_slot(sc, vif); 1337 1338 ath_tx_node_cleanup(sc, &avp->mcast_node); 1339 1340 ath9k_calculate_summary_state(sc, avp->chanctx); 1341 1342 ath9k_set_txpower(sc, NULL); 1343 1344 mutex_unlock(&sc->mutex); 1345 } 1346 1347 static void ath9k_enable_ps(struct ath_softc *sc) 1348 { 1349 struct ath_hw *ah = sc->sc_ah; 1350 struct ath_common *common = ath9k_hw_common(ah); 1351 1352 if (config_enabled(CONFIG_ATH9K_TX99)) 1353 return; 1354 1355 sc->ps_enabled = true; 1356 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { 1357 if ((ah->imask & ATH9K_INT_TIM_TIMER) == 0) { 1358 ah->imask |= ATH9K_INT_TIM_TIMER; 1359 ath9k_hw_set_interrupts(ah); 1360 } 1361 ath9k_hw_setrxabort(ah, 1); 1362 } 1363 ath_dbg(common, PS, "PowerSave enabled\n"); 1364 } 1365 1366 static void ath9k_disable_ps(struct ath_softc *sc) 1367 { 1368 struct ath_hw *ah = sc->sc_ah; 1369 struct ath_common *common = ath9k_hw_common(ah); 1370 1371 if (config_enabled(CONFIG_ATH9K_TX99)) 1372 return; 1373 1374 sc->ps_enabled = false; 1375 ath9k_hw_setpower(ah, ATH9K_PM_AWAKE); 1376 if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP)) { 1377 ath9k_hw_setrxabort(ah, 0); 1378 sc->ps_flags &= ~(PS_WAIT_FOR_BEACON | 1379 PS_WAIT_FOR_CAB | 1380 PS_WAIT_FOR_PSPOLL_DATA | 1381 PS_WAIT_FOR_TX_ACK); 1382 if (ah->imask & ATH9K_INT_TIM_TIMER) { 1383 ah->imask &= ~ATH9K_INT_TIM_TIMER; 1384 ath9k_hw_set_interrupts(ah); 1385 } 1386 } 1387 ath_dbg(common, PS, "PowerSave disabled\n"); 1388 } 1389 1390 static int ath9k_config(struct ieee80211_hw *hw, u32 changed) 1391 { 1392 struct ath_softc *sc = hw->priv; 1393 struct ath_hw *ah = sc->sc_ah; 1394 struct ath_common *common = ath9k_hw_common(ah); 1395 struct ieee80211_conf *conf = &hw->conf; 1396 struct ath_chanctx *ctx = sc->cur_chan; 1397 1398 ath9k_ps_wakeup(sc); 1399 mutex_lock(&sc->mutex); 1400 1401 if (changed & IEEE80211_CONF_CHANGE_IDLE) { 1402 sc->ps_idle = !!(conf->flags & IEEE80211_CONF_IDLE); 1403 if (sc->ps_idle) { 1404 ath_cancel_work(sc); 1405 ath9k_stop_btcoex(sc); 1406 } else { 1407 ath9k_start_btcoex(sc); 1408 /* 1409 * The chip needs a reset to properly wake up from 1410 * full sleep 1411 */ 1412 ath_chanctx_set_channel(sc, ctx, &ctx->chandef); 1413 } 1414 } 1415 1416 /* 1417 * We just prepare to enable PS. We have to wait until our AP has 1418 * ACK'd our null data frame to disable RX otherwise we'll ignore 1419 * those ACKs and end up retransmitting the same null data frames. 1420 * IEEE80211_CONF_CHANGE_PS is only passed by mac80211 for STA mode. 1421 */ 1422 if (changed & IEEE80211_CONF_CHANGE_PS) { 1423 unsigned long flags; 1424 spin_lock_irqsave(&sc->sc_pm_lock, flags); 1425 if (conf->flags & IEEE80211_CONF_PS) 1426 ath9k_enable_ps(sc); 1427 else 1428 ath9k_disable_ps(sc); 1429 spin_unlock_irqrestore(&sc->sc_pm_lock, flags); 1430 } 1431 1432 if (changed & IEEE80211_CONF_CHANGE_MONITOR) { 1433 if (conf->flags & IEEE80211_CONF_MONITOR) { 1434 ath_dbg(common, CONFIG, "Monitor mode is enabled\n"); 1435 sc->sc_ah->is_monitoring = true; 1436 } else { 1437 ath_dbg(common, CONFIG, "Monitor mode is disabled\n"); 1438 sc->sc_ah->is_monitoring = false; 1439 } 1440 } 1441 1442 if (!ath9k_is_chanctx_enabled() && (changed & IEEE80211_CONF_CHANGE_CHANNEL)) { 1443 ctx->offchannel = !!(conf->flags & IEEE80211_CONF_OFFCHANNEL); 1444 ath_chanctx_set_channel(sc, ctx, &hw->conf.chandef); 1445 } 1446 1447 mutex_unlock(&sc->mutex); 1448 ath9k_ps_restore(sc); 1449 1450 return 0; 1451 } 1452 1453 #define SUPPORTED_FILTERS \ 1454 (FIF_ALLMULTI | \ 1455 FIF_CONTROL | \ 1456 FIF_PSPOLL | \ 1457 FIF_OTHER_BSS | \ 1458 FIF_BCN_PRBRESP_PROMISC | \ 1459 FIF_PROBE_REQ | \ 1460 FIF_FCSFAIL) 1461 1462 /* FIXME: sc->sc_full_reset ? */ 1463 static void ath9k_configure_filter(struct ieee80211_hw *hw, 1464 unsigned int changed_flags, 1465 unsigned int *total_flags, 1466 u64 multicast) 1467 { 1468 struct ath_softc *sc = hw->priv; 1469 struct ath_chanctx *ctx; 1470 u32 rfilt; 1471 1472 changed_flags &= SUPPORTED_FILTERS; 1473 *total_flags &= SUPPORTED_FILTERS; 1474 1475 spin_lock_bh(&sc->chan_lock); 1476 ath_for_each_chanctx(sc, ctx) 1477 ctx->rxfilter = *total_flags; 1478 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 1479 sc->offchannel.chan.rxfilter = *total_flags; 1480 #endif 1481 spin_unlock_bh(&sc->chan_lock); 1482 1483 ath9k_ps_wakeup(sc); 1484 rfilt = ath_calcrxfilter(sc); 1485 ath9k_hw_setrxfilter(sc->sc_ah, rfilt); 1486 ath9k_ps_restore(sc); 1487 1488 ath_dbg(ath9k_hw_common(sc->sc_ah), CONFIG, "Set HW RX filter: 0x%x\n", 1489 rfilt); 1490 } 1491 1492 static int ath9k_sta_add(struct ieee80211_hw *hw, 1493 struct ieee80211_vif *vif, 1494 struct ieee80211_sta *sta) 1495 { 1496 struct ath_softc *sc = hw->priv; 1497 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1498 struct ath_node *an = (struct ath_node *) sta->drv_priv; 1499 struct ieee80211_key_conf ps_key = { }; 1500 int key; 1501 1502 ath_node_attach(sc, sta, vif); 1503 1504 if (vif->type != NL80211_IFTYPE_AP && 1505 vif->type != NL80211_IFTYPE_AP_VLAN) 1506 return 0; 1507 1508 key = ath_key_config(common, vif, sta, &ps_key); 1509 if (key > 0) { 1510 an->ps_key = key; 1511 an->key_idx[0] = key; 1512 } 1513 1514 return 0; 1515 } 1516 1517 static void ath9k_del_ps_key(struct ath_softc *sc, 1518 struct ieee80211_vif *vif, 1519 struct ieee80211_sta *sta) 1520 { 1521 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1522 struct ath_node *an = (struct ath_node *) sta->drv_priv; 1523 struct ieee80211_key_conf ps_key = { .hw_key_idx = an->ps_key }; 1524 1525 if (!an->ps_key) 1526 return; 1527 1528 ath_key_delete(common, &ps_key); 1529 an->ps_key = 0; 1530 an->key_idx[0] = 0; 1531 } 1532 1533 static int ath9k_sta_remove(struct ieee80211_hw *hw, 1534 struct ieee80211_vif *vif, 1535 struct ieee80211_sta *sta) 1536 { 1537 struct ath_softc *sc = hw->priv; 1538 1539 ath9k_del_ps_key(sc, vif, sta); 1540 ath_node_detach(sc, sta); 1541 1542 return 0; 1543 } 1544 1545 static int ath9k_sta_state(struct ieee80211_hw *hw, 1546 struct ieee80211_vif *vif, 1547 struct ieee80211_sta *sta, 1548 enum ieee80211_sta_state old_state, 1549 enum ieee80211_sta_state new_state) 1550 { 1551 struct ath_softc *sc = hw->priv; 1552 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1553 int ret = 0; 1554 1555 if (old_state == IEEE80211_STA_AUTH && 1556 new_state == IEEE80211_STA_ASSOC) { 1557 ret = ath9k_sta_add(hw, vif, sta); 1558 ath_dbg(common, CONFIG, 1559 "Add station: %pM\n", sta->addr); 1560 } else if (old_state == IEEE80211_STA_ASSOC && 1561 new_state == IEEE80211_STA_AUTH) { 1562 ret = ath9k_sta_remove(hw, vif, sta); 1563 ath_dbg(common, CONFIG, 1564 "Remove station: %pM\n", sta->addr); 1565 } 1566 1567 if (ath9k_is_chanctx_enabled()) { 1568 if (vif->type == NL80211_IFTYPE_STATION) { 1569 if (old_state == IEEE80211_STA_ASSOC && 1570 new_state == IEEE80211_STA_AUTHORIZED) 1571 ath_chanctx_event(sc, vif, 1572 ATH_CHANCTX_EVENT_AUTHORIZED); 1573 } 1574 } 1575 1576 return ret; 1577 } 1578 1579 static void ath9k_sta_set_tx_filter(struct ath_hw *ah, 1580 struct ath_node *an, 1581 bool set) 1582 { 1583 int i; 1584 1585 for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { 1586 if (!an->key_idx[i]) 1587 continue; 1588 ath9k_hw_set_tx_filter(ah, an->key_idx[i], set); 1589 } 1590 } 1591 1592 static void ath9k_sta_notify(struct ieee80211_hw *hw, 1593 struct ieee80211_vif *vif, 1594 enum sta_notify_cmd cmd, 1595 struct ieee80211_sta *sta) 1596 { 1597 struct ath_softc *sc = hw->priv; 1598 struct ath_node *an = (struct ath_node *) sta->drv_priv; 1599 1600 switch (cmd) { 1601 case STA_NOTIFY_SLEEP: 1602 an->sleeping = true; 1603 ath_tx_aggr_sleep(sta, sc, an); 1604 ath9k_sta_set_tx_filter(sc->sc_ah, an, true); 1605 break; 1606 case STA_NOTIFY_AWAKE: 1607 ath9k_sta_set_tx_filter(sc->sc_ah, an, false); 1608 an->sleeping = false; 1609 ath_tx_aggr_wakeup(sc, an); 1610 break; 1611 } 1612 } 1613 1614 static int ath9k_conf_tx(struct ieee80211_hw *hw, 1615 struct ieee80211_vif *vif, u16 queue, 1616 const struct ieee80211_tx_queue_params *params) 1617 { 1618 struct ath_softc *sc = hw->priv; 1619 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1620 struct ath_txq *txq; 1621 struct ath9k_tx_queue_info qi; 1622 int ret = 0; 1623 1624 if (queue >= IEEE80211_NUM_ACS) 1625 return 0; 1626 1627 txq = sc->tx.txq_map[queue]; 1628 1629 ath9k_ps_wakeup(sc); 1630 mutex_lock(&sc->mutex); 1631 1632 memset(&qi, 0, sizeof(struct ath9k_tx_queue_info)); 1633 1634 qi.tqi_aifs = params->aifs; 1635 qi.tqi_cwmin = params->cw_min; 1636 qi.tqi_cwmax = params->cw_max; 1637 qi.tqi_burstTime = params->txop * 32; 1638 1639 ath_dbg(common, CONFIG, 1640 "Configure tx [queue/halq] [%d/%d], aifs: %d, cw_min: %d, cw_max: %d, txop: %d\n", 1641 queue, txq->axq_qnum, params->aifs, params->cw_min, 1642 params->cw_max, params->txop); 1643 1644 ath_update_max_aggr_framelen(sc, queue, qi.tqi_burstTime); 1645 ret = ath_txq_update(sc, txq->axq_qnum, &qi); 1646 if (ret) 1647 ath_err(common, "TXQ Update failed\n"); 1648 1649 mutex_unlock(&sc->mutex); 1650 ath9k_ps_restore(sc); 1651 1652 return ret; 1653 } 1654 1655 static int ath9k_set_key(struct ieee80211_hw *hw, 1656 enum set_key_cmd cmd, 1657 struct ieee80211_vif *vif, 1658 struct ieee80211_sta *sta, 1659 struct ieee80211_key_conf *key) 1660 { 1661 struct ath_softc *sc = hw->priv; 1662 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1663 struct ath_node *an = NULL; 1664 int ret = 0, i; 1665 1666 if (ath9k_modparam_nohwcrypt) 1667 return -ENOSPC; 1668 1669 if ((vif->type == NL80211_IFTYPE_ADHOC || 1670 vif->type == NL80211_IFTYPE_MESH_POINT) && 1671 (key->cipher == WLAN_CIPHER_SUITE_TKIP || 1672 key->cipher == WLAN_CIPHER_SUITE_CCMP) && 1673 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE)) { 1674 /* 1675 * For now, disable hw crypto for the RSN IBSS group keys. This 1676 * could be optimized in the future to use a modified key cache 1677 * design to support per-STA RX GTK, but until that gets 1678 * implemented, use of software crypto for group addressed 1679 * frames is a acceptable to allow RSN IBSS to be used. 1680 */ 1681 return -EOPNOTSUPP; 1682 } 1683 1684 mutex_lock(&sc->mutex); 1685 ath9k_ps_wakeup(sc); 1686 ath_dbg(common, CONFIG, "Set HW Key %d\n", cmd); 1687 if (sta) 1688 an = (struct ath_node *)sta->drv_priv; 1689 1690 switch (cmd) { 1691 case SET_KEY: 1692 if (sta) 1693 ath9k_del_ps_key(sc, vif, sta); 1694 1695 key->hw_key_idx = 0; 1696 ret = ath_key_config(common, vif, sta, key); 1697 if (ret >= 0) { 1698 key->hw_key_idx = ret; 1699 /* push IV and Michael MIC generation to stack */ 1700 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; 1701 if (key->cipher == WLAN_CIPHER_SUITE_TKIP) 1702 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; 1703 if (sc->sc_ah->sw_mgmt_crypto_tx && 1704 key->cipher == WLAN_CIPHER_SUITE_CCMP) 1705 key->flags |= IEEE80211_KEY_FLAG_SW_MGMT_TX; 1706 ret = 0; 1707 } 1708 if (an && key->hw_key_idx) { 1709 for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { 1710 if (an->key_idx[i]) 1711 continue; 1712 an->key_idx[i] = key->hw_key_idx; 1713 break; 1714 } 1715 WARN_ON(i == ARRAY_SIZE(an->key_idx)); 1716 } 1717 break; 1718 case DISABLE_KEY: 1719 ath_key_delete(common, key); 1720 if (an) { 1721 for (i = 0; i < ARRAY_SIZE(an->key_idx); i++) { 1722 if (an->key_idx[i] != key->hw_key_idx) 1723 continue; 1724 an->key_idx[i] = 0; 1725 break; 1726 } 1727 } 1728 key->hw_key_idx = 0; 1729 break; 1730 default: 1731 ret = -EINVAL; 1732 } 1733 1734 ath9k_ps_restore(sc); 1735 mutex_unlock(&sc->mutex); 1736 1737 return ret; 1738 } 1739 1740 static void ath9k_bss_info_changed(struct ieee80211_hw *hw, 1741 struct ieee80211_vif *vif, 1742 struct ieee80211_bss_conf *bss_conf, 1743 u32 changed) 1744 { 1745 #define CHECK_ANI \ 1746 (BSS_CHANGED_ASSOC | \ 1747 BSS_CHANGED_IBSS | \ 1748 BSS_CHANGED_BEACON_ENABLED) 1749 1750 struct ath_softc *sc = hw->priv; 1751 struct ath_hw *ah = sc->sc_ah; 1752 struct ath_common *common = ath9k_hw_common(ah); 1753 struct ath_vif *avp = (void *)vif->drv_priv; 1754 int slottime; 1755 1756 ath9k_ps_wakeup(sc); 1757 mutex_lock(&sc->mutex); 1758 1759 if (changed & BSS_CHANGED_ASSOC) { 1760 ath_dbg(common, CONFIG, "BSSID %pM Changed ASSOC %d\n", 1761 bss_conf->bssid, bss_conf->assoc); 1762 1763 memcpy(avp->bssid, bss_conf->bssid, ETH_ALEN); 1764 avp->aid = bss_conf->aid; 1765 avp->assoc = bss_conf->assoc; 1766 1767 ath9k_calculate_summary_state(sc, avp->chanctx); 1768 } 1769 1770 if ((changed & BSS_CHANGED_IBSS) || 1771 (changed & BSS_CHANGED_OCB)) { 1772 memcpy(common->curbssid, bss_conf->bssid, ETH_ALEN); 1773 common->curaid = bss_conf->aid; 1774 ath9k_hw_write_associd(sc->sc_ah); 1775 } 1776 1777 if ((changed & BSS_CHANGED_BEACON_ENABLED) || 1778 (changed & BSS_CHANGED_BEACON_INT) || 1779 (changed & BSS_CHANGED_BEACON_INFO)) { 1780 ath9k_beacon_config(sc, vif, changed); 1781 if (changed & BSS_CHANGED_BEACON_ENABLED) 1782 ath9k_calculate_summary_state(sc, avp->chanctx); 1783 } 1784 1785 if ((avp->chanctx == sc->cur_chan) && 1786 (changed & BSS_CHANGED_ERP_SLOT)) { 1787 if (bss_conf->use_short_slot) 1788 slottime = 9; 1789 else 1790 slottime = 20; 1791 if (vif->type == NL80211_IFTYPE_AP) { 1792 /* 1793 * Defer update, so that connected stations can adjust 1794 * their settings at the same time. 1795 * See beacon.c for more details 1796 */ 1797 sc->beacon.slottime = slottime; 1798 sc->beacon.updateslot = UPDATE; 1799 } else { 1800 ah->slottime = slottime; 1801 ath9k_hw_init_global_settings(ah); 1802 } 1803 } 1804 1805 if (changed & BSS_CHANGED_P2P_PS) 1806 ath9k_p2p_bss_info_changed(sc, vif); 1807 1808 if (changed & CHECK_ANI) 1809 ath_check_ani(sc); 1810 1811 if (changed & BSS_CHANGED_TXPOWER) { 1812 ath_dbg(common, CONFIG, "vif %pM power %d dbm power_type %d\n", 1813 vif->addr, bss_conf->txpower, bss_conf->txpower_type); 1814 ath9k_set_txpower(sc, vif); 1815 } 1816 1817 mutex_unlock(&sc->mutex); 1818 ath9k_ps_restore(sc); 1819 1820 #undef CHECK_ANI 1821 } 1822 1823 static u64 ath9k_get_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 1824 { 1825 struct ath_softc *sc = hw->priv; 1826 u64 tsf; 1827 1828 mutex_lock(&sc->mutex); 1829 ath9k_ps_wakeup(sc); 1830 tsf = ath9k_hw_gettsf64(sc->sc_ah); 1831 ath9k_ps_restore(sc); 1832 mutex_unlock(&sc->mutex); 1833 1834 return tsf; 1835 } 1836 1837 static void ath9k_set_tsf(struct ieee80211_hw *hw, 1838 struct ieee80211_vif *vif, 1839 u64 tsf) 1840 { 1841 struct ath_softc *sc = hw->priv; 1842 1843 mutex_lock(&sc->mutex); 1844 ath9k_ps_wakeup(sc); 1845 ath9k_hw_settsf64(sc->sc_ah, tsf); 1846 ath9k_ps_restore(sc); 1847 mutex_unlock(&sc->mutex); 1848 } 1849 1850 static void ath9k_reset_tsf(struct ieee80211_hw *hw, struct ieee80211_vif *vif) 1851 { 1852 struct ath_softc *sc = hw->priv; 1853 1854 mutex_lock(&sc->mutex); 1855 1856 ath9k_ps_wakeup(sc); 1857 ath9k_hw_reset_tsf(sc->sc_ah); 1858 ath9k_ps_restore(sc); 1859 1860 mutex_unlock(&sc->mutex); 1861 } 1862 1863 static int ath9k_ampdu_action(struct ieee80211_hw *hw, 1864 struct ieee80211_vif *vif, 1865 struct ieee80211_ampdu_params *params) 1866 { 1867 struct ath_softc *sc = hw->priv; 1868 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1869 bool flush = false; 1870 int ret = 0; 1871 struct ieee80211_sta *sta = params->sta; 1872 enum ieee80211_ampdu_mlme_action action = params->action; 1873 u16 tid = params->tid; 1874 u16 *ssn = ¶ms->ssn; 1875 1876 mutex_lock(&sc->mutex); 1877 1878 switch (action) { 1879 case IEEE80211_AMPDU_RX_START: 1880 break; 1881 case IEEE80211_AMPDU_RX_STOP: 1882 break; 1883 case IEEE80211_AMPDU_TX_START: 1884 if (ath9k_is_chanctx_enabled()) { 1885 if (test_bit(ATH_OP_SCANNING, &common->op_flags)) { 1886 ret = -EBUSY; 1887 break; 1888 } 1889 } 1890 ath9k_ps_wakeup(sc); 1891 ret = ath_tx_aggr_start(sc, sta, tid, ssn); 1892 if (!ret) 1893 ieee80211_start_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1894 ath9k_ps_restore(sc); 1895 break; 1896 case IEEE80211_AMPDU_TX_STOP_FLUSH: 1897 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT: 1898 flush = true; 1899 case IEEE80211_AMPDU_TX_STOP_CONT: 1900 ath9k_ps_wakeup(sc); 1901 ath_tx_aggr_stop(sc, sta, tid); 1902 if (!flush) 1903 ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid); 1904 ath9k_ps_restore(sc); 1905 break; 1906 case IEEE80211_AMPDU_TX_OPERATIONAL: 1907 ath9k_ps_wakeup(sc); 1908 ath_tx_aggr_resume(sc, sta, tid); 1909 ath9k_ps_restore(sc); 1910 break; 1911 default: 1912 ath_err(ath9k_hw_common(sc->sc_ah), "Unknown AMPDU action\n"); 1913 } 1914 1915 mutex_unlock(&sc->mutex); 1916 1917 return ret; 1918 } 1919 1920 static int ath9k_get_survey(struct ieee80211_hw *hw, int idx, 1921 struct survey_info *survey) 1922 { 1923 struct ath_softc *sc = hw->priv; 1924 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 1925 struct ieee80211_supported_band *sband; 1926 struct ieee80211_channel *chan; 1927 int pos; 1928 1929 if (config_enabled(CONFIG_ATH9K_TX99)) 1930 return -EOPNOTSUPP; 1931 1932 spin_lock_bh(&common->cc_lock); 1933 if (idx == 0) 1934 ath_update_survey_stats(sc); 1935 1936 sband = hw->wiphy->bands[NL80211_BAND_2GHZ]; 1937 if (sband && idx >= sband->n_channels) { 1938 idx -= sband->n_channels; 1939 sband = NULL; 1940 } 1941 1942 if (!sband) 1943 sband = hw->wiphy->bands[NL80211_BAND_5GHZ]; 1944 1945 if (!sband || idx >= sband->n_channels) { 1946 spin_unlock_bh(&common->cc_lock); 1947 return -ENOENT; 1948 } 1949 1950 chan = &sband->channels[idx]; 1951 pos = chan->hw_value; 1952 memcpy(survey, &sc->survey[pos], sizeof(*survey)); 1953 survey->channel = chan; 1954 spin_unlock_bh(&common->cc_lock); 1955 1956 return 0; 1957 } 1958 1959 static void ath9k_enable_dynack(struct ath_softc *sc) 1960 { 1961 #ifdef CONFIG_ATH9K_DYNACK 1962 u32 rfilt; 1963 struct ath_hw *ah = sc->sc_ah; 1964 1965 ath_dynack_reset(ah); 1966 1967 ah->dynack.enabled = true; 1968 rfilt = ath_calcrxfilter(sc); 1969 ath9k_hw_setrxfilter(ah, rfilt); 1970 #endif 1971 } 1972 1973 static void ath9k_set_coverage_class(struct ieee80211_hw *hw, 1974 s16 coverage_class) 1975 { 1976 struct ath_softc *sc = hw->priv; 1977 struct ath_hw *ah = sc->sc_ah; 1978 1979 if (config_enabled(CONFIG_ATH9K_TX99)) 1980 return; 1981 1982 mutex_lock(&sc->mutex); 1983 1984 if (coverage_class >= 0) { 1985 ah->coverage_class = coverage_class; 1986 if (ah->dynack.enabled) { 1987 u32 rfilt; 1988 1989 ah->dynack.enabled = false; 1990 rfilt = ath_calcrxfilter(sc); 1991 ath9k_hw_setrxfilter(ah, rfilt); 1992 } 1993 ath9k_ps_wakeup(sc); 1994 ath9k_hw_init_global_settings(ah); 1995 ath9k_ps_restore(sc); 1996 } else if (!ah->dynack.enabled) { 1997 ath9k_enable_dynack(sc); 1998 } 1999 2000 mutex_unlock(&sc->mutex); 2001 } 2002 2003 static bool ath9k_has_tx_pending(struct ath_softc *sc, 2004 bool sw_pending) 2005 { 2006 int i, npend = 0; 2007 2008 for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) { 2009 if (!ATH_TXQ_SETUP(sc, i)) 2010 continue; 2011 2012 npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i], 2013 sw_pending); 2014 if (npend) 2015 break; 2016 } 2017 2018 return !!npend; 2019 } 2020 2021 static void ath9k_flush(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2022 u32 queues, bool drop) 2023 { 2024 struct ath_softc *sc = hw->priv; 2025 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2026 2027 if (ath9k_is_chanctx_enabled()) { 2028 if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags)) 2029 goto flush; 2030 2031 /* 2032 * If MCC is active, extend the flush timeout 2033 * and wait for the HW/SW queues to become 2034 * empty. This needs to be done outside the 2035 * sc->mutex lock to allow the channel scheduler 2036 * to switch channel contexts. 2037 * 2038 * The vif queues have been stopped in mac80211, 2039 * so there won't be any incoming frames. 2040 */ 2041 __ath9k_flush(hw, queues, drop, true, true); 2042 return; 2043 } 2044 flush: 2045 mutex_lock(&sc->mutex); 2046 __ath9k_flush(hw, queues, drop, true, false); 2047 mutex_unlock(&sc->mutex); 2048 } 2049 2050 void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop, 2051 bool sw_pending, bool timeout_override) 2052 { 2053 struct ath_softc *sc = hw->priv; 2054 struct ath_hw *ah = sc->sc_ah; 2055 struct ath_common *common = ath9k_hw_common(ah); 2056 int timeout; 2057 bool drain_txq; 2058 2059 cancel_delayed_work_sync(&sc->tx_complete_work); 2060 2061 if (ah->ah_flags & AH_UNPLUGGED) { 2062 ath_dbg(common, ANY, "Device has been unplugged!\n"); 2063 return; 2064 } 2065 2066 if (test_bit(ATH_OP_INVALID, &common->op_flags)) { 2067 ath_dbg(common, ANY, "Device not present\n"); 2068 return; 2069 } 2070 2071 spin_lock_bh(&sc->chan_lock); 2072 if (timeout_override) 2073 timeout = HZ / 5; 2074 else 2075 timeout = sc->cur_chan->flush_timeout; 2076 spin_unlock_bh(&sc->chan_lock); 2077 2078 ath_dbg(common, CHAN_CTX, 2079 "Flush timeout: %d\n", jiffies_to_msecs(timeout)); 2080 2081 if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc, sw_pending), 2082 timeout) > 0) 2083 drop = false; 2084 2085 if (drop) { 2086 ath9k_ps_wakeup(sc); 2087 spin_lock_bh(&sc->sc_pcu_lock); 2088 drain_txq = ath_drain_all_txq(sc); 2089 spin_unlock_bh(&sc->sc_pcu_lock); 2090 2091 if (!drain_txq) 2092 ath_reset(sc, NULL); 2093 2094 ath9k_ps_restore(sc); 2095 } 2096 2097 ieee80211_queue_delayed_work(hw, &sc->tx_complete_work, 0); 2098 } 2099 2100 static bool ath9k_tx_frames_pending(struct ieee80211_hw *hw) 2101 { 2102 struct ath_softc *sc = hw->priv; 2103 2104 return ath9k_has_tx_pending(sc, true); 2105 } 2106 2107 static int ath9k_tx_last_beacon(struct ieee80211_hw *hw) 2108 { 2109 struct ath_softc *sc = hw->priv; 2110 struct ath_hw *ah = sc->sc_ah; 2111 struct ieee80211_vif *vif; 2112 struct ath_vif *avp; 2113 struct ath_buf *bf; 2114 struct ath_tx_status ts; 2115 bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA); 2116 int status; 2117 2118 vif = sc->beacon.bslot[0]; 2119 if (!vif) 2120 return 0; 2121 2122 if (!vif->bss_conf.enable_beacon) 2123 return 0; 2124 2125 avp = (void *)vif->drv_priv; 2126 2127 if (!sc->beacon.tx_processed && !edma) { 2128 tasklet_disable(&sc->bcon_tasklet); 2129 2130 bf = avp->av_bcbuf; 2131 if (!bf || !bf->bf_mpdu) 2132 goto skip; 2133 2134 status = ath9k_hw_txprocdesc(ah, bf->bf_desc, &ts); 2135 if (status == -EINPROGRESS) 2136 goto skip; 2137 2138 sc->beacon.tx_processed = true; 2139 sc->beacon.tx_last = !(ts.ts_status & ATH9K_TXERR_MASK); 2140 2141 skip: 2142 tasklet_enable(&sc->bcon_tasklet); 2143 } 2144 2145 return sc->beacon.tx_last; 2146 } 2147 2148 static int ath9k_get_stats(struct ieee80211_hw *hw, 2149 struct ieee80211_low_level_stats *stats) 2150 { 2151 struct ath_softc *sc = hw->priv; 2152 struct ath_hw *ah = sc->sc_ah; 2153 struct ath9k_mib_stats *mib_stats = &ah->ah_mibStats; 2154 2155 stats->dot11ACKFailureCount = mib_stats->ackrcv_bad; 2156 stats->dot11RTSFailureCount = mib_stats->rts_bad; 2157 stats->dot11FCSErrorCount = mib_stats->fcs_bad; 2158 stats->dot11RTSSuccessCount = mib_stats->rts_good; 2159 return 0; 2160 } 2161 2162 static u32 fill_chainmask(u32 cap, u32 new) 2163 { 2164 u32 filled = 0; 2165 int i; 2166 2167 for (i = 0; cap && new; i++, cap >>= 1) { 2168 if (!(cap & BIT(0))) 2169 continue; 2170 2171 if (new & BIT(0)) 2172 filled |= BIT(i); 2173 2174 new >>= 1; 2175 } 2176 2177 return filled; 2178 } 2179 2180 static bool validate_antenna_mask(struct ath_hw *ah, u32 val) 2181 { 2182 if (AR_SREV_9300_20_OR_LATER(ah)) 2183 return true; 2184 2185 switch (val & 0x7) { 2186 case 0x1: 2187 case 0x3: 2188 case 0x7: 2189 return true; 2190 case 0x2: 2191 return (ah->caps.rx_chainmask == 1); 2192 default: 2193 return false; 2194 } 2195 } 2196 2197 static int ath9k_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant) 2198 { 2199 struct ath_softc *sc = hw->priv; 2200 struct ath_hw *ah = sc->sc_ah; 2201 2202 if (ah->caps.rx_chainmask != 1) 2203 rx_ant |= tx_ant; 2204 2205 if (!validate_antenna_mask(ah, rx_ant) || !tx_ant) 2206 return -EINVAL; 2207 2208 sc->ant_rx = rx_ant; 2209 sc->ant_tx = tx_ant; 2210 2211 if (ah->caps.rx_chainmask == 1) 2212 return 0; 2213 2214 /* AR9100 runs into calibration issues if not all rx chains are enabled */ 2215 if (AR_SREV_9100(ah)) 2216 ah->rxchainmask = 0x7; 2217 else 2218 ah->rxchainmask = fill_chainmask(ah->caps.rx_chainmask, rx_ant); 2219 2220 ah->txchainmask = fill_chainmask(ah->caps.tx_chainmask, tx_ant); 2221 ath9k_cmn_reload_chainmask(ah); 2222 2223 return 0; 2224 } 2225 2226 static int ath9k_get_antenna(struct ieee80211_hw *hw, u32 *tx_ant, u32 *rx_ant) 2227 { 2228 struct ath_softc *sc = hw->priv; 2229 2230 *tx_ant = sc->ant_tx; 2231 *rx_ant = sc->ant_rx; 2232 return 0; 2233 } 2234 2235 static void ath9k_sw_scan_start(struct ieee80211_hw *hw, 2236 struct ieee80211_vif *vif, 2237 const u8 *mac_addr) 2238 { 2239 struct ath_softc *sc = hw->priv; 2240 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2241 set_bit(ATH_OP_SCANNING, &common->op_flags); 2242 } 2243 2244 static void ath9k_sw_scan_complete(struct ieee80211_hw *hw, 2245 struct ieee80211_vif *vif) 2246 { 2247 struct ath_softc *sc = hw->priv; 2248 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2249 clear_bit(ATH_OP_SCANNING, &common->op_flags); 2250 } 2251 2252 #ifdef CONFIG_ATH9K_CHANNEL_CONTEXT 2253 2254 static void ath9k_cancel_pending_offchannel(struct ath_softc *sc) 2255 { 2256 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2257 2258 if (sc->offchannel.roc_vif) { 2259 ath_dbg(common, CHAN_CTX, 2260 "%s: Aborting RoC\n", __func__); 2261 2262 del_timer_sync(&sc->offchannel.timer); 2263 if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START) 2264 ath_roc_complete(sc, ATH_ROC_COMPLETE_ABORT); 2265 } 2266 2267 if (test_bit(ATH_OP_SCANNING, &common->op_flags)) { 2268 ath_dbg(common, CHAN_CTX, 2269 "%s: Aborting HW scan\n", __func__); 2270 2271 del_timer_sync(&sc->offchannel.timer); 2272 ath_scan_complete(sc, true); 2273 } 2274 } 2275 2276 static int ath9k_hw_scan(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2277 struct ieee80211_scan_request *hw_req) 2278 { 2279 struct cfg80211_scan_request *req = &hw_req->req; 2280 struct ath_softc *sc = hw->priv; 2281 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2282 int ret = 0; 2283 2284 mutex_lock(&sc->mutex); 2285 2286 if (WARN_ON(sc->offchannel.scan_req)) { 2287 ret = -EBUSY; 2288 goto out; 2289 } 2290 2291 ath9k_ps_wakeup(sc); 2292 set_bit(ATH_OP_SCANNING, &common->op_flags); 2293 sc->offchannel.scan_vif = vif; 2294 sc->offchannel.scan_req = req; 2295 sc->offchannel.scan_idx = 0; 2296 2297 ath_dbg(common, CHAN_CTX, "HW scan request received on vif: %pM\n", 2298 vif->addr); 2299 2300 if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) { 2301 ath_dbg(common, CHAN_CTX, "Starting HW scan\n"); 2302 ath_offchannel_next(sc); 2303 } 2304 2305 out: 2306 mutex_unlock(&sc->mutex); 2307 2308 return ret; 2309 } 2310 2311 static void ath9k_cancel_hw_scan(struct ieee80211_hw *hw, 2312 struct ieee80211_vif *vif) 2313 { 2314 struct ath_softc *sc = hw->priv; 2315 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2316 2317 ath_dbg(common, CHAN_CTX, "Cancel HW scan on vif: %pM\n", vif->addr); 2318 2319 mutex_lock(&sc->mutex); 2320 del_timer_sync(&sc->offchannel.timer); 2321 ath_scan_complete(sc, true); 2322 mutex_unlock(&sc->mutex); 2323 } 2324 2325 static int ath9k_remain_on_channel(struct ieee80211_hw *hw, 2326 struct ieee80211_vif *vif, 2327 struct ieee80211_channel *chan, int duration, 2328 enum ieee80211_roc_type type) 2329 { 2330 struct ath_softc *sc = hw->priv; 2331 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2332 int ret = 0; 2333 2334 mutex_lock(&sc->mutex); 2335 2336 if (WARN_ON(sc->offchannel.roc_vif)) { 2337 ret = -EBUSY; 2338 goto out; 2339 } 2340 2341 ath9k_ps_wakeup(sc); 2342 sc->offchannel.roc_vif = vif; 2343 sc->offchannel.roc_chan = chan; 2344 sc->offchannel.roc_duration = duration; 2345 2346 ath_dbg(common, CHAN_CTX, 2347 "RoC request on vif: %pM, type: %d duration: %d\n", 2348 vif->addr, type, duration); 2349 2350 if (sc->offchannel.state == ATH_OFFCHANNEL_IDLE) { 2351 ath_dbg(common, CHAN_CTX, "Starting RoC period\n"); 2352 ath_offchannel_next(sc); 2353 } 2354 2355 out: 2356 mutex_unlock(&sc->mutex); 2357 2358 return ret; 2359 } 2360 2361 static int ath9k_cancel_remain_on_channel(struct ieee80211_hw *hw) 2362 { 2363 struct ath_softc *sc = hw->priv; 2364 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2365 2366 mutex_lock(&sc->mutex); 2367 2368 ath_dbg(common, CHAN_CTX, "Cancel RoC\n"); 2369 del_timer_sync(&sc->offchannel.timer); 2370 2371 if (sc->offchannel.roc_vif) { 2372 if (sc->offchannel.state >= ATH_OFFCHANNEL_ROC_START) 2373 ath_roc_complete(sc, ATH_ROC_COMPLETE_CANCEL); 2374 } 2375 2376 mutex_unlock(&sc->mutex); 2377 2378 return 0; 2379 } 2380 2381 static int ath9k_add_chanctx(struct ieee80211_hw *hw, 2382 struct ieee80211_chanctx_conf *conf) 2383 { 2384 struct ath_softc *sc = hw->priv; 2385 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2386 struct ath_chanctx *ctx, **ptr; 2387 int pos; 2388 2389 mutex_lock(&sc->mutex); 2390 2391 ath_for_each_chanctx(sc, ctx) { 2392 if (ctx->assigned) 2393 continue; 2394 2395 ptr = (void *) conf->drv_priv; 2396 *ptr = ctx; 2397 ctx->assigned = true; 2398 pos = ctx - &sc->chanctx[0]; 2399 ctx->hw_queue_base = pos * IEEE80211_NUM_ACS; 2400 2401 ath_dbg(common, CHAN_CTX, 2402 "Add channel context: %d MHz\n", 2403 conf->def.chan->center_freq); 2404 2405 ath_chanctx_set_channel(sc, ctx, &conf->def); 2406 2407 mutex_unlock(&sc->mutex); 2408 return 0; 2409 } 2410 2411 mutex_unlock(&sc->mutex); 2412 return -ENOSPC; 2413 } 2414 2415 2416 static void ath9k_remove_chanctx(struct ieee80211_hw *hw, 2417 struct ieee80211_chanctx_conf *conf) 2418 { 2419 struct ath_softc *sc = hw->priv; 2420 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2421 struct ath_chanctx *ctx = ath_chanctx_get(conf); 2422 2423 mutex_lock(&sc->mutex); 2424 2425 ath_dbg(common, CHAN_CTX, 2426 "Remove channel context: %d MHz\n", 2427 conf->def.chan->center_freq); 2428 2429 ctx->assigned = false; 2430 ctx->hw_queue_base = 0; 2431 ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN); 2432 2433 mutex_unlock(&sc->mutex); 2434 } 2435 2436 static void ath9k_change_chanctx(struct ieee80211_hw *hw, 2437 struct ieee80211_chanctx_conf *conf, 2438 u32 changed) 2439 { 2440 struct ath_softc *sc = hw->priv; 2441 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2442 struct ath_chanctx *ctx = ath_chanctx_get(conf); 2443 2444 mutex_lock(&sc->mutex); 2445 ath_dbg(common, CHAN_CTX, 2446 "Change channel context: %d MHz\n", 2447 conf->def.chan->center_freq); 2448 ath_chanctx_set_channel(sc, ctx, &conf->def); 2449 mutex_unlock(&sc->mutex); 2450 } 2451 2452 static int ath9k_assign_vif_chanctx(struct ieee80211_hw *hw, 2453 struct ieee80211_vif *vif, 2454 struct ieee80211_chanctx_conf *conf) 2455 { 2456 struct ath_softc *sc = hw->priv; 2457 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2458 struct ath_vif *avp = (void *)vif->drv_priv; 2459 struct ath_chanctx *ctx = ath_chanctx_get(conf); 2460 int i; 2461 2462 ath9k_cancel_pending_offchannel(sc); 2463 2464 mutex_lock(&sc->mutex); 2465 2466 ath_dbg(common, CHAN_CTX, 2467 "Assign VIF (addr: %pM, type: %d, p2p: %d) to channel context: %d MHz\n", 2468 vif->addr, vif->type, vif->p2p, 2469 conf->def.chan->center_freq); 2470 2471 avp->chanctx = ctx; 2472 ctx->nvifs_assigned++; 2473 list_add_tail(&avp->list, &ctx->vifs); 2474 ath9k_calculate_summary_state(sc, ctx); 2475 for (i = 0; i < IEEE80211_NUM_ACS; i++) 2476 vif->hw_queue[i] = ctx->hw_queue_base + i; 2477 2478 mutex_unlock(&sc->mutex); 2479 2480 return 0; 2481 } 2482 2483 static void ath9k_unassign_vif_chanctx(struct ieee80211_hw *hw, 2484 struct ieee80211_vif *vif, 2485 struct ieee80211_chanctx_conf *conf) 2486 { 2487 struct ath_softc *sc = hw->priv; 2488 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2489 struct ath_vif *avp = (void *)vif->drv_priv; 2490 struct ath_chanctx *ctx = ath_chanctx_get(conf); 2491 int ac; 2492 2493 ath9k_cancel_pending_offchannel(sc); 2494 2495 mutex_lock(&sc->mutex); 2496 2497 ath_dbg(common, CHAN_CTX, 2498 "Remove VIF (addr: %pM, type: %d, p2p: %d) from channel context: %d MHz\n", 2499 vif->addr, vif->type, vif->p2p, 2500 conf->def.chan->center_freq); 2501 2502 avp->chanctx = NULL; 2503 ctx->nvifs_assigned--; 2504 list_del(&avp->list); 2505 ath9k_calculate_summary_state(sc, ctx); 2506 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) 2507 vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; 2508 2509 mutex_unlock(&sc->mutex); 2510 } 2511 2512 static void ath9k_mgd_prepare_tx(struct ieee80211_hw *hw, 2513 struct ieee80211_vif *vif) 2514 { 2515 struct ath_softc *sc = hw->priv; 2516 struct ath_common *common = ath9k_hw_common(sc->sc_ah); 2517 struct ath_vif *avp = (struct ath_vif *) vif->drv_priv; 2518 struct ath_beacon_config *cur_conf; 2519 struct ath_chanctx *go_ctx; 2520 unsigned long timeout; 2521 bool changed = false; 2522 u32 beacon_int; 2523 2524 if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags)) 2525 return; 2526 2527 if (!avp->chanctx) 2528 return; 2529 2530 mutex_lock(&sc->mutex); 2531 2532 spin_lock_bh(&sc->chan_lock); 2533 if (sc->next_chan || (sc->cur_chan != avp->chanctx)) 2534 changed = true; 2535 spin_unlock_bh(&sc->chan_lock); 2536 2537 if (!changed) 2538 goto out; 2539 2540 ath9k_cancel_pending_offchannel(sc); 2541 2542 go_ctx = ath_is_go_chanctx_present(sc); 2543 2544 if (go_ctx) { 2545 /* 2546 * Wait till the GO interface gets a chance 2547 * to send out an NoA. 2548 */ 2549 spin_lock_bh(&sc->chan_lock); 2550 sc->sched.mgd_prepare_tx = true; 2551 cur_conf = &go_ctx->beacon; 2552 beacon_int = TU_TO_USEC(cur_conf->beacon_interval); 2553 spin_unlock_bh(&sc->chan_lock); 2554 2555 timeout = usecs_to_jiffies(beacon_int * 2); 2556 init_completion(&sc->go_beacon); 2557 2558 mutex_unlock(&sc->mutex); 2559 2560 if (wait_for_completion_timeout(&sc->go_beacon, 2561 timeout) == 0) { 2562 ath_dbg(common, CHAN_CTX, 2563 "Failed to send new NoA\n"); 2564 2565 spin_lock_bh(&sc->chan_lock); 2566 sc->sched.mgd_prepare_tx = false; 2567 spin_unlock_bh(&sc->chan_lock); 2568 } 2569 2570 mutex_lock(&sc->mutex); 2571 } 2572 2573 ath_dbg(common, CHAN_CTX, 2574 "%s: Set chanctx state to FORCE_ACTIVE for vif: %pM\n", 2575 __func__, vif->addr); 2576 2577 spin_lock_bh(&sc->chan_lock); 2578 sc->next_chan = avp->chanctx; 2579 sc->sched.state = ATH_CHANCTX_STATE_FORCE_ACTIVE; 2580 spin_unlock_bh(&sc->chan_lock); 2581 2582 ath_chanctx_set_next(sc, true); 2583 out: 2584 mutex_unlock(&sc->mutex); 2585 } 2586 2587 void ath9k_fill_chanctx_ops(void) 2588 { 2589 if (!ath9k_is_chanctx_enabled()) 2590 return; 2591 2592 ath9k_ops.hw_scan = ath9k_hw_scan; 2593 ath9k_ops.cancel_hw_scan = ath9k_cancel_hw_scan; 2594 ath9k_ops.remain_on_channel = ath9k_remain_on_channel; 2595 ath9k_ops.cancel_remain_on_channel = ath9k_cancel_remain_on_channel; 2596 ath9k_ops.add_chanctx = ath9k_add_chanctx; 2597 ath9k_ops.remove_chanctx = ath9k_remove_chanctx; 2598 ath9k_ops.change_chanctx = ath9k_change_chanctx; 2599 ath9k_ops.assign_vif_chanctx = ath9k_assign_vif_chanctx; 2600 ath9k_ops.unassign_vif_chanctx = ath9k_unassign_vif_chanctx; 2601 ath9k_ops.mgd_prepare_tx = ath9k_mgd_prepare_tx; 2602 } 2603 2604 #endif 2605 2606 static int ath9k_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 2607 int *dbm) 2608 { 2609 struct ath_softc *sc = hw->priv; 2610 struct ath_vif *avp = (void *)vif->drv_priv; 2611 2612 mutex_lock(&sc->mutex); 2613 if (avp->chanctx) 2614 *dbm = avp->chanctx->cur_txpower; 2615 else 2616 *dbm = sc->cur_chan->cur_txpower; 2617 mutex_unlock(&sc->mutex); 2618 2619 *dbm /= 2; 2620 2621 return 0; 2622 } 2623 2624 struct ieee80211_ops ath9k_ops = { 2625 .tx = ath9k_tx, 2626 .start = ath9k_start, 2627 .stop = ath9k_stop, 2628 .add_interface = ath9k_add_interface, 2629 .change_interface = ath9k_change_interface, 2630 .remove_interface = ath9k_remove_interface, 2631 .config = ath9k_config, 2632 .configure_filter = ath9k_configure_filter, 2633 .sta_state = ath9k_sta_state, 2634 .sta_notify = ath9k_sta_notify, 2635 .conf_tx = ath9k_conf_tx, 2636 .bss_info_changed = ath9k_bss_info_changed, 2637 .set_key = ath9k_set_key, 2638 .get_tsf = ath9k_get_tsf, 2639 .set_tsf = ath9k_set_tsf, 2640 .reset_tsf = ath9k_reset_tsf, 2641 .ampdu_action = ath9k_ampdu_action, 2642 .get_survey = ath9k_get_survey, 2643 .rfkill_poll = ath9k_rfkill_poll_state, 2644 .set_coverage_class = ath9k_set_coverage_class, 2645 .flush = ath9k_flush, 2646 .tx_frames_pending = ath9k_tx_frames_pending, 2647 .tx_last_beacon = ath9k_tx_last_beacon, 2648 .release_buffered_frames = ath9k_release_buffered_frames, 2649 .get_stats = ath9k_get_stats, 2650 .set_antenna = ath9k_set_antenna, 2651 .get_antenna = ath9k_get_antenna, 2652 2653 #ifdef CONFIG_ATH9K_WOW 2654 .suspend = ath9k_suspend, 2655 .resume = ath9k_resume, 2656 .set_wakeup = ath9k_set_wakeup, 2657 #endif 2658 2659 #ifdef CONFIG_ATH9K_DEBUGFS 2660 .get_et_sset_count = ath9k_get_et_sset_count, 2661 .get_et_stats = ath9k_get_et_stats, 2662 .get_et_strings = ath9k_get_et_strings, 2663 #endif 2664 2665 #if defined(CONFIG_MAC80211_DEBUGFS) && defined(CONFIG_ATH9K_STATION_STATISTICS) 2666 .sta_add_debugfs = ath9k_sta_add_debugfs, 2667 #endif 2668 .sw_scan_start = ath9k_sw_scan_start, 2669 .sw_scan_complete = ath9k_sw_scan_complete, 2670 .get_txpower = ath9k_get_txpower, 2671 }; 2672