path: root/kernel/drivers/283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030

/*
 * Copyright (c) 2010-2011 Atheros Communications Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include "htc.h"

MODULE_AUTHOR("Atheros Communications");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("Atheros driver 802.11n HTC based wireless devices");

static unsigned int ath9k_debug = ATH_DBG_DEFAULT;
module_param_named(debug, ath9k_debug, uint, 0);
MODULE_PARM_DESC(debug, "Debugging mask");

int htc_modparam_nohwcrypt;
module_param_named(nohwcrypt, htc_modparam_nohwcrypt, int, 0444);
MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption");

static int ath9k_htc_btcoex_enable;
module_param_named(btcoex_enable, ath9k_htc_btcoex_enable, int, 0444);
MODULE_PARM_DESC(btcoex_enable, "Enable wifi-BT coexistence");

static int ath9k_ps_enable;
module_param_named(ps_enable, ath9k_ps_enable, int, 0444);
MODULE_PARM_DESC(ps_enable, "Enable WLAN PowerSave");

int htc_use_dev_fw = 0;
module_param_named(use_dev_fw, htc_use_dev_fw, int, 0444);
MODULE_PARM_DESC(use_dev_fw, "Use development FW version");

#ifdef CONFIG_MAC80211_LEDS
int ath9k_htc_led_blink = 1;
module_param_named(blink, ath9k_htc_led_blink, int, 0444);
MODULE_PARM_DESC(blink, "Enable LED blink on activity");

static const struct ieee80211_tpt_blink ath9k_htc_tpt_blink[] = {
	{ .throughput = 0 * 1024, .blink_time = 334 },
	{ .throughput = 1 * 1024, .blink_time = 260 },
	{ .throughput = 5 * 1024, .blink_time = 220 },
	{ .throughput = 10 * 1024, .blink_time = 190 },
	{ .throughput = 20 * 1024, .blink_time = 170 },
	{ .throughput = 50 * 1024, .blink_time = 150 },
	{ .throughput = 70 * 1024, .blink_time = 130 },
	{ .throughput = 100 * 1024, .blink_time = 110 },
	{ .throughput = 200 * 1024, .blink_time = 80 },
	{ .throughput = 300 * 1024, .blink_time = 50 },
};
#endif

static void ath9k_htc_op_ps_wakeup(struct ath_common *common)
{
	ath9k_htc_ps_wakeup((struct ath9k_htc_priv *) common->priv);
}

static void ath9k_htc_op_ps_restore(struct ath_common *common)
{
	ath9k_htc_ps_restore((struct ath9k_htc_priv *) common->priv);
}

static struct ath_ps_ops ath9k_htc_ps_ops = {
	.wakeup = ath9k_htc_op_ps_wakeup,
	.restore = ath9k_htc_op_ps_restore,
};

static int ath9k_htc_wait_for_target(struct ath9k_htc_priv *priv)
{
	unsigned long time_left;

	if (atomic_read(&priv->htc->tgt_ready) > 0) {
		atomic_dec(&priv->htc->tgt_ready);
		return 0;
	}

	/* Firmware can take up to 50ms to get ready, to be safe use 1 second */
	time_left = wait_for_completion_timeout(&priv->htc->target_wait, HZ);
	if (!time_left) {
		dev_err(priv->dev, "ath9k_htc: Target is unresponsive\n");
		return -ETIMEDOUT;
	}

	atomic_dec(&priv->htc->tgt_ready);

	return 0;
}

static void ath9k_deinit_priv(struct ath9k_htc_priv *priv)
{
	ath9k_hw_deinit(priv->ah);
	kfree(priv->ah);
	priv->ah = NULL;
}

static void ath9k_deinit_device(struct ath9k_htc_priv *priv)
{
	struct ieee80211_hw *hw = priv->hw;

	wiphy_rfkill_stop_polling(hw->wiphy);
	ath9k_deinit_leds(priv);
	ath9k_htc_deinit_debug(priv);
	ieee80211_unregister_hw(hw);
	ath9k_rx_cleanup(priv);
	ath9k_tx_cleanup(priv);
	ath9k_deinit_priv(priv);
}

static inline int ath9k_htc_connect_svc(struct ath9k_htc_priv *priv,
					u16 service_id,
					void (*tx) (void *,
						    struct sk_buff *,
						    enum htc_endpoint_id,
						    bool txok),
					enum htc_endpoint_id *ep_id)
{
	struct htc_service_connreq req;

	memset(&req, 0, sizeof(struct htc_service_connreq));

	req.service_id = service_id;
	req.ep_callbacks.priv = priv;
	req.ep_callbacks.rx = ath9k_htc_rxep;
	req.ep_callbacks.tx = tx;

	return htc_connect_service(priv->htc, &req, ep_id);
}

static int ath9k_init_htc_services(struct ath9k_htc_priv *priv, u16 devid,
				   u32 drv_info)
{
	int ret;

	/* WMI CMD*/
	ret = ath9k_wmi_connect(priv->htc, priv->wmi, &priv->wmi_cmd_ep);
	if (ret)
		goto err;

	/* Beacon */
	ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
				    &priv->beacon_ep);
	if (ret)
		goto err;

	/* CAB */
	ret = ath9k_htc_connect_svc(priv, WMI_CAB_SVC, ath9k_htc_txep,
				    &priv->cab_ep);
	if (ret)
		goto err;


	/* UAPSD */
	ret = ath9k_htc_connect_svc(priv, WMI_UAPSD_SVC, ath9k_htc_txep,
				    &priv->uapsd_ep);
	if (ret)
		goto err;

	/* MGMT */
	ret = ath9k_htc_connect_svc(priv, WMI_MGMT_SVC, ath9k_htc_txep,
				    &priv->mgmt_ep);
	if (ret)
		goto err;

	/* DATA BE */
	ret = ath9k_htc_connect_svc(priv, WMI_DATA_BE_SVC, ath9k_htc_txep,
				    &priv->data_be_ep);
	if (ret)
		goto err;

	/* DATA BK */
	ret = ath9k_htc_connect_svc(priv, WMI_DATA_BK_SVC, ath9k_htc_txep,
				    &priv->data_bk_ep);
	if (ret)
		goto err;

	/* DATA VI */
	ret = ath9k_htc_connect_svc(priv, WMI_DATA_VI_SVC, ath9k_htc_txep,
				    &priv->data_vi_ep);
	if (ret)
		goto err;

	/* DATA VO */
	ret = ath9k_htc_connect_svc(priv, WMI_DATA_VO_SVC, ath9k_htc_txep,
				    &priv->data_vo_ep);
	if (ret)
		goto err;

	/*
	 * Setup required credits before initializing HTC.
	 * This is a bit hacky, but, since queuing is done in
	 * the HIF layer, shouldn't matter much.
	 */

	if (IS_AR7010_DEVICE(drv_info))
		priv->htc->credits = 45;
	else
		priv->htc->credits = 33;

	ret = htc_init(priv->htc);
	if (ret)
		goto err;

	dev_info(priv->dev, "ath9k_htc: HTC initialized with %d credits\n",
		 priv->htc->credits);

	return 0;

err:
	dev_err(priv->dev, "ath9k_htc: Unable to initialize HTC services\n");
	return ret;
}

static void ath9k_reg_notifier(struct wiphy *wiphy,
			       struct regulatory_request *request)
{
	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
	struct ath9k_htc_priv *priv = hw->priv;

	ath_reg_notifier_apply(wiphy, request,
			       ath9k_hw_regulatory(priv->ah));
}

static unsigned int ath9k_regread(void *hw_priv, u32 reg_offset)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	__be32 val, reg = cpu_to_be32(reg_offset);
	int r;

	r = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
			  (u8 *) &reg, sizeof(reg),
			  (u8 *) &val, sizeof(val),
			  100);
	if (unlikely(r)) {
		ath_dbg(common, WMI, "REGISTER READ FAILED: (0x%04x, %d)\n",
			reg_offset, r);
		return -EIO;
	}

	return be32_to_cpu(val);
}

static void ath9k_multi_regread(void *hw_priv, u32 *addr,
				u32 *val, u16 count)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	__be32 tmpaddr[8];
	__be32 tmpval[8];
	int i, ret;

       for (i = 0; i < count; i++) {
	       tmpaddr[i] = cpu_to_be32(addr[i]);
       }

       ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_READ_CMDID,
			   (u8 *)tmpaddr , sizeof(u32) * count,
			   (u8 *)tmpval, sizeof(u32) * count,
			   100);
	if (unlikely(ret)) {
		ath_dbg(common, WMI,
			"Multiple REGISTER READ FAILED (count: %d)\n", count);
	}

       for (i = 0; i < count; i++) {
	       val[i] = be32_to_cpu(tmpval[i]);
       }
}

static void ath9k_regwrite_multi(struct ath_common *common)
{
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	u32 rsp_status;
	int r;

	r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
			  (u8 *) &priv->wmi->multi_write,
			  sizeof(struct register_write) * priv->wmi->multi_write_idx,
			  (u8 *) &rsp_status, sizeof(rsp_status),
			  100);
	if (unlikely(r)) {
		ath_dbg(common, WMI,
			"REGISTER WRITE FAILED, multi len: %d\n",
			priv->wmi->multi_write_idx);
	}
	priv->wmi->multi_write_idx = 0;
}

static void ath9k_regwrite_single(void *hw_priv, u32 val, u32 reg_offset)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	const __be32 buf[2] = {
		cpu_to_be32(reg_offset),
		cpu_to_be32(val),
	};
	int r;

	r = ath9k_wmi_cmd(priv->wmi, WMI_REG_WRITE_CMDID,
			  (u8 *) &buf, sizeof(buf),
			  (u8 *) &val, sizeof(val),
			  100);
	if (unlikely(r)) {
		ath_dbg(common, WMI, "REGISTER WRITE FAILED:(0x%04x, %d)\n",
			reg_offset, r);
	}
}

static void ath9k_regwrite_buffer(void *hw_priv, u32 val, u32 reg_offset)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	mutex_lock(&priv->wmi->multi_write_mutex);

	/* Store the register/value */
	priv->wmi->multi_write[priv->wmi->multi_write_idx].reg =
		cpu_to_be32(reg_offset);
	priv->wmi->multi_write[priv->wmi->multi_write_idx].val =
		cpu_to_be32(val);

	priv->wmi->multi_write_idx++;

	/* If the buffer is full, send it out. */
	if (priv->wmi->multi_write_idx == MAX_CMD_NUMBER)
		ath9k_regwrite_multi(common);

	mutex_unlock(&priv->wmi->multi_write_mutex);
}

static void ath9k_regwrite(void *hw_priv, u32 val, u32 reg_offset)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	if (atomic_read(&priv->wmi->mwrite_cnt))
		ath9k_regwrite_buffer(hw_priv, val, reg_offset);
	else
		ath9k_regwrite_single(hw_priv, val, reg_offset);
}

static void ath9k_enable_regwrite_buffer(void *hw_priv)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	atomic_inc(&priv->wmi->mwrite_cnt);
}

static void ath9k_regwrite_flush(void *hw_priv)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	atomic_dec(&priv->wmi->mwrite_cnt);

	mutex_lock(&priv->wmi->multi_write_mutex);

	if (priv->wmi->multi_write_idx)
		ath9k_regwrite_multi(common);

	mutex_unlock(&priv->wmi->multi_write_mutex);
}

static void ath9k_reg_rmw_buffer(void *hw_priv,
				 u32 reg_offset, u32 set, u32 clr)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	u32 rsp_status;
	int r;

	mutex_lock(&priv->wmi->multi_rmw_mutex);

	/* Store the register/value */
	priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].reg =
		cpu_to_be32(reg_offset);
	priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].set =
		cpu_to_be32(set);
	priv->wmi->multi_rmw[priv->wmi->multi_rmw_idx].clr =
		cpu_to_be32(clr);

	priv->wmi->multi_rmw_idx++;

	/* If the buffer is full, send it out. */
	if (priv->wmi->multi_rmw_idx == MAX_RMW_CMD_NUMBER) {
		r = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
			  (u8 *) &priv->wmi->multi_rmw,
			  sizeof(struct register_write) * priv->wmi->multi_rmw_idx,
			  (u8 *) &rsp_status, sizeof(rsp_status),
			  100);
		if (unlikely(r)) {
			ath_dbg(common, WMI,
				"REGISTER RMW FAILED, multi len: %d\n",
				priv->wmi->multi_rmw_idx);
		}
		priv->wmi->multi_rmw_idx = 0;
	}

	mutex_unlock(&priv->wmi->multi_rmw_mutex);
}

static void ath9k_reg_rmw_flush(void *hw_priv)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	u32 rsp_status;
	int r;

	if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags))
		return;

	atomic_dec(&priv->wmi->m_rmw_cnt);

	mutex_lock(&priv->wmi->multi_rmw_mutex);

	if (priv->wmi->multi_rmw_idx) {
		r = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
			  (u8 *) &priv->wmi->multi_rmw,
			  sizeof(struct register_rmw) * priv->wmi->multi_rmw_idx,
			  (u8 *) &rsp_status, sizeof(rsp_status),
			  100);
		if (unlikely(r)) {
			ath_dbg(common, WMI,
				"REGISTER RMW FAILED, multi len: %d\n",
				priv->wmi->multi_rmw_idx);
		}
		priv->wmi->multi_rmw_idx = 0;
	}

	mutex_unlock(&priv->wmi->multi_rmw_mutex);
}

static void ath9k_enable_rmw_buffer(void *hw_priv)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags))
		return;

	atomic_inc(&priv->wmi->m_rmw_cnt);
}

static u32 ath9k_reg_rmw_single(void *hw_priv,
				 u32 reg_offset, u32 set, u32 clr)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;
	struct register_rmw buf, buf_ret;
	int ret;
	u32 val = 0;

	buf.reg = cpu_to_be32(reg_offset);
	buf.set = cpu_to_be32(set);
	buf.clr = cpu_to_be32(clr);

	ret = ath9k_wmi_cmd(priv->wmi, WMI_REG_RMW_CMDID,
			  (u8 *) &buf, sizeof(buf),
			  (u8 *) &buf_ret, sizeof(buf_ret),
			  100);
	if (unlikely(ret)) {
		ath_dbg(common, WMI, "REGISTER RMW FAILED:(0x%04x, %d)\n",
			reg_offset, ret);
	}
	return val;
}

static u32 ath9k_reg_rmw(void *hw_priv, u32 reg_offset, u32 set, u32 clr)
{
	struct ath_hw *ah = (struct ath_hw *) hw_priv;
	struct ath_common *common = ath9k_hw_common(ah);
	struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *) common->priv;

	if (test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags)) {
		u32 val;

		val = REG_READ(ah, reg_offset);
		val &= ~clr;
		val |= set;
		REG_WRITE(ah, reg_offset, val);

		return 0;
	}

	if (atomic_read(&priv->wmi->m_rmw_cnt))
		ath9k_reg_rmw_buffer(hw_priv, reg_offset, set, clr);
	else
		ath9k_reg_rmw_single(hw_priv, reg_offset, set, clr);

	return 0;
}

static void ath_usb_read_cachesize(struct ath_common *common, int *csz)
{
	*csz = L1_CACHE_BYTES >> 2;
}

static bool ath_usb_eeprom_read(struct ath_common *common, u32 off, u16 *data)
{
	struct ath_hw *ah = (struct ath_hw *) common->ah;

	(void)REG_READ(ah, AR5416_EEPROM_OFFSET + (off << AR5416_EEPROM_S));

	if (!ath9k_hw_wait(ah,
			   AR_EEPROM_STATUS_DATA,
			   AR_EEPROM_STATUS_DATA_BUSY |
			   AR_EEPROM_STATUS_DATA_PROT_ACCESS, 0,
			   AH_WAIT_TIMEOUT))
		return false;

	*data = MS(REG_READ(ah, AR_EEPROM_STATUS_DATA),
		   AR_EEPROM_STATUS_DATA_VAL);

	return true;
}

static const struct ath_bus_ops ath9k_usb_bus_ops = {
	.ath_bus_type = ATH_USB,
	.read_cachesize = ath_usb_read_cachesize,
	.eeprom_read = ath_usb_eeprom_read,
};

static int ath9k_init_queues(struct ath9k_htc_priv *priv)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);
	int i;

	for (i = 0; i < ARRAY_SIZE(priv->hwq_map); i++)
		priv->hwq_map[i] = -1;

	priv->beacon.beaconq = ath9k_hw_beaconq_setup(priv->ah);
	if (priv->beacon.beaconq == -1) {
		ath_err(common, "Unable to setup BEACON xmit queue\n");
		goto err;
	}

	priv->cabq = ath9k_htc_cabq_setup(priv);
	if (priv->cabq == -1) {
		ath_err(common, "Unable to setup CAB xmit queue\n");
		goto err;
	}

	if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BE)) {
		ath_err(common, "Unable to setup xmit queue for BE traffic\n");
		goto err;
	}

	if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_BK)) {
		ath_err(common, "Unable to setup xmit queue for BK traffic\n");
		goto err;
	}
	if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VI)) {
		ath_err(common, "Unable to setup xmit queue for VI traffic\n");
		goto err;
	}
	if (!ath9k_htc_txq_setup(priv, IEEE80211_AC_VO)) {
		ath_err(common, "Unable to setup xmit queue for VO traffic\n");
		goto err;
	}

	return 0;

err:
	return -EINVAL;
}

static void ath9k_init_misc(struct ath9k_htc_priv *priv)
{
	struct ath_common *common = ath9k_hw_common(priv->ah);

	memcpy(common->bssidmask, ath_bcast_mac, ETH_ALEN);

	common->last_rssi = ATH_RSSI_DUMMY_MARKER;
	priv->ah->opmode = NL80211_IFTYPE_STATION;

	priv->spec_priv.ah = priv->ah;
	priv->spec_priv.spec_config.enabled = 0;
	priv->spec_priv.spec_config.short_repeat = true;
	priv->spec_priv.spec_config.count = 8;
	priv->spec_priv.spec_config.endless = false;
	priv->spec_priv.spec_config.period = 0x12;
	priv->spec_priv.spec_config.fft_period = 0x02;
}

static int ath9k_init_priv(struct ath9k_htc_priv *priv,
			   u16 devid, char *product,
			   u32 drv_info)
{
	struct ath_hw *ah = NULL;
	struct ath_common *common;
	int i, ret = 0, csz = 0;

	ah = kzalloc(sizeof(struct ath_hw), GFP_KERNEL);
	if (!ah)
		return -ENOMEM;

	ah->dev = priv->dev;
	ah->hw = priv->hw;
	ah->hw_version.devid = devid;
	ah->hw_version.usbdev = drv_info;
	ah->ah_flags |= AH_USE_EEPROM;
	ah->reg_ops.read = ath9k_regread;
	ah->reg_ops.multi_read = ath9k_multi_regread;
	ah->reg_ops.write = ath9k_regwrite;
	ah->reg_ops.enable_write_buffer = ath9k_enable_regwrite_buffer;
	ah->reg_ops.write_flush = ath9k_regwrite_flush;
	ah->reg_ops.enable_rmw_buffer = ath9k_enable_rmw_buffer;
	ah->reg_ops.rmw_flush = ath9k_reg_rmw_flush;
	ah->reg_ops.rmw = ath9k_reg_rmw;
	priv->ah = ah;

	common = ath9k_hw_common(ah);
	common->ops = &ah->reg_ops;
	common->ps_ops = &ath9k_htc_ps_ops;
	common->bus_ops = &ath9k_usb_bus_ops;
	common->ah = ah;
	common->hw = priv->hw;
	common->priv = priv;
	common->debug_mask = ath9k_debug;
	common->btcoex_enabled = ath9k_htc_btcoex_enable == 1;
	set_bit(ATH_OP_INVALID, &common->op_flags);

	spin_lock_init(&priv->beacon_lock);
	spin_lock_init(&priv->tx.tx_lock);
	mutex_init(&priv->mutex);
	mutex_init(&priv->htc_pm_lock);
	tasklet_init(&priv->rx_tasklet, ath9k_rx_tasklet,
		     (unsigned long)priv);
	tasklet_init(&priv->tx_failed_tasklet, ath9k_tx_failed_tasklet,
		     (unsigned long)priv);
	INIT_DELAYED_WORK(&priv->ani_work, ath9k_htc_ani_work);
	INIT_WORK(&priv->ps_work, ath9k_ps_work);
	INIT_WORK(&priv->fatal_work, ath9k_fatal_work);
	setup_timer(&priv->tx.cleanup_timer, ath9k_htc_tx_cleanup_timer,
		    (unsigned long)priv);

	/*
	 * Cache line size is used to size and align various
	 * structures used to communicate with the hardware.
	 */
	ath_read_cachesize(common, &csz);
	common->cachelsz = csz << 2; /* convert to bytes */

	ret = ath9k_hw_init(ah);
	if (ret) {
		ath_err(common,
			"Unable to initialize hardware; initialization status: %d\n",
			ret);
		goto err_hw;
	}

	ret = ath9k_init_queues(priv);
	if (ret)
		goto err_queues;

	for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++)
		priv->beacon.bslot[i] = NULL;
	priv->beacon.slottime = ATH9K_SLOT_TIME_9;

	ath9k_cmn_init_channels_rates(common);
	ath9k_cmn_init_crypto(ah);
	ath9k_init_misc(priv);
	ath9k_htc_init_btcoex(priv, product);

	return 0;

err_queues:
	ath9k_hw_deinit(ah);
err_hw:

	kfree(ah);
	priv->ah = NULL;

	return ret;
}

static const struct ieee80211_iface_limit if_limits[] = {
	{ .max = 2,	.types = BIT(NL80211_IFTYPE_STATION) |
				 BIT(NL80211_IFTYPE_P2P_CLIENT) },
	{ .max = 2,	.types = BIT(NL80211_IFTYPE_AP) |
#ifdef CONFIG_MAC80211_MESH
				 BIT(NL80211_IFTYPE_MESH_POINT) |
#endif
				 BIT(NL80211_IFTYPE_P2P_GO) },
};

static const struct ieee80211_iface_combination if_comb = {
	.limits = if_limits,
	.n_limits = ARRAY_SIZE(if_limits),
	.max_interfaces = 2,
	.num_different_channels = 1,
};

static void ath9k_set_hw_capab(struct ath9k_htc_priv *priv,
			       struct ieee80211_hw *hw)
{
	struct ath_hw *ah = priv->ah;
	struct ath_common *common = ath9k_hw_common(priv->ah);
	struct base_eep_header *pBase;

	ieee80211_hw_set(hw, HOST_BROADCAST_PS_BUFFERING);
	ieee80211_hw_set(hw, MFP_CAPABLE);
	ieee80211_hw_set(hw, REPORTS_TX_ACK_STATUS);
	ieee80211_hw_set(hw, PS_NULLFUNC_STACK);
	ieee80211_hw_set(hw, RX_INCLUDES_FCS);
	ieee80211_hw_set(hw, HAS_RATE_CONTROL);
	ieee80211_hw_set(hw, SPECTRUM_MGMT);
	ieee80211_hw_set(hw, SIGNAL_DBM);
	ieee80211_hw_set(hw, AMPDU_AGGREGATION);

	if (ath9k_ps_enable)
		ieee80211_hw_set(hw, SUPPORTS_PS);

	hw->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) |
		BIT(NL80211_IFTYPE_ADHOC) |
		BIT(NL80211_IFTYPE_AP) |
		BIT(NL80211_IFTYPE_P2P_GO) |
		BIT(NL80211_IFTYPE_P2P_CLIENT) |
		BIT(NL80211_IFTYPE_MESH_POINT) |
		BIT(NL80211_IFTYPE_OCB);

	hw->wiphy->iface_combinations = &if_comb;
	hw->wiphy->n_iface_combinations = 1;

	hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;

	hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN |
			    WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
			    WIPHY_FLAG_HAS_CHANNEL_SWITCH;

	hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_TDLS;

	hw->queues = 4;
	hw->max_listen_interval = 1;

	hw->vif_data_size = sizeof(struct ath9k_htc_vif);
	hw->sta_data_size = sizeof(struct ath9k_htc_sta);

	/* tx_frame_hdr is larger than tx_mgmt_hdr anyway */
	hw->extra_tx_headroom = sizeof(struct tx_frame_hdr) +
		sizeof(struct htc_frame_hdr) + 4;

	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_2GHZ)
		hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
			&common->sbands[IEEE80211_BAND_2GHZ];
	if (priv->ah->caps.hw_caps & ATH9K_HW_CAP_5GHZ)
		hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
			&common->sbands[IEEE80211_BAND_5GHZ];

	ath9k_cmn_reload_chainmask(ah);

	pBase = ath9k_htc_get_eeprom_base(priv);
	if (pBase) {
		hw->wiphy->available_antennas_rx = pBase->rxMask;
		hw->wiphy->available_antennas_tx = pBase->txMask;
	}

	SET_IEEE80211_PERM_ADDR(hw, common->macaddr);
}

static int ath9k_init_firmware_version(struct ath9k_htc_priv *priv)
{
	struct ieee80211_hw *hw = priv->hw;
	struct wmi_fw_version cmd_rsp;
	int ret;

	memset(&cmd_rsp, 0, sizeof(cmd_rsp));

	WMI_CMD(WMI_GET_FW_VERSION);
	if (ret)
		return -EINVAL;

	priv->fw_version_major = be16_to_cpu(cmd_rsp.major);
	priv->fw_version_minor = be16_to_cpu(cmd_rsp.minor);

	snprintf(hw->wiphy->fw_version, sizeof(hw->wiphy->fw_version), "%d.%d",
		 priv->fw_version_major,
		 priv->fw_version_minor);

	dev_info(priv->dev, "ath9k_htc: FW Version: %d.%d\n",
		 priv->fw_version_major,
		 priv->fw_version_minor);

	/*
	 * Check if the available FW matches the driver's
	 * required version.
	 */
	if (priv->fw_version_major != MAJOR_VERSION_REQ ||
	    priv->fw_version_minor < MINOR_VERSION_REQ) {
		dev_err(priv->dev, "ath9k_htc: Please upgrade to FW version %d.%d\n",
			MAJOR_VERSION_REQ, MINOR_VERSION_REQ);
		return -EINVAL;
	}

	if (priv->fw_version_major == 1 && priv->fw_version_minor < 4)
		set_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags);

	dev_info(priv->dev, "FW RMW support: %s\n",
		test_bit(HTC_FWFLAG_NO_RMW, &priv->fw_flags) ? "Off" : "On");

	return 0;
}

static int ath9k_init_device(struct ath9k_htc_priv *priv,
			     u16 devid, char *product, u32 drv_info)
{
	struct ieee80211_hw *hw = priv->hw;
	struct ath_common *common;
	struct ath_hw *ah;
	int error = 0;
	struct ath_regulatory *reg;
	char hw_name[64];

	/* Bring up device */
	error = ath9k_init_priv(priv, devid, product, drv_info);
	if (error != 0)
		goto err_init;

	ah = priv->ah;
	common = ath9k_hw_common(ah);
	ath9k_set_hw_capab(priv, hw);

	error = ath9k_init_firmware_version(priv);
	if (error != 0)
		goto err_fw;

	/* Initialize regulatory */
	error = ath_regd_init(&common->regulatory, priv->hw->wiphy,
			      ath9k_reg_notifier);
	if (error)
		goto err_regd;

	reg = &common->regulatory;

	/* Setup TX */
	error = ath9k_tx_init(priv);
	if (error != 0)
		goto err_tx;

	/* Setup RX */
	error = ath9k_rx_init(priv);
	if (error != 0)
		goto err_rx;

	ath9k_hw_disable(priv->ah);
#ifdef CONFIG_MAC80211_LEDS
	/* must be initialized before ieee80211_register_hw */
	priv->led_cdev.default_trigger = ieee80211_create_tpt_led_trigger(priv->hw,
		IEEE80211_TPT_LEDTRIG_FL_RADIO, ath9k_htc_tpt_blink,
		ARRAY_SIZE(ath9k_htc_tpt_blink));
#endif

	/* Register with mac80211 */
	error = ieee80211_register_hw(hw);
	if (error)
		goto err_register;

	/* Handle world regulatory */
	if (!ath_is_world_regd(reg)) {
		error = regulatory_hint(hw->wiphy, reg->alpha2);
		if (error)
			goto err_world;
	}

	error = ath9k_htc_init_debug(priv->ah);
	if (error) {
		ath_err(common, "Unable to create debugfs files\n");
		goto err_world;
	}

	ath_dbg(common, CONFIG,
		"WMI:%d, BCN:%d, CAB:%d, UAPSD:%d, MGMT:%d, BE:%d, BK:%d, VI:%d, VO:%d\n",
		priv->wmi_cmd_ep,
		priv->beacon_ep,
		priv->cab_ep,
		priv->uapsd_ep,
		priv->mgmt_ep,
		priv->data_be_ep,
		priv->data_bk_ep,
		priv->data_vi_ep,
		priv->data_vo_ep);

	ath9k_hw_name(priv->ah, hw_name, sizeof(hw_name));
	wiphy_info(hw->wiphy, "%s\n", hw_name);

	ath9k_init_leds(priv);
	ath9k_start_rfkill_poll(priv);

	return 0;

err_world:
	ieee80211_unregister_hw(hw);
err_register:
	ath9k_rx_cleanup(priv);
err_rx:
	ath9k_tx_cleanup(priv);
err_tx:
	/* Nothing */
err_regd:
	/* Nothing */
err_fw:
	ath9k_deinit_priv(priv);
err_init:
	return error;
}

int ath9k_htc_probe_device(struct htc_target *htc_handle, struct device *dev,
			   u16 devid, char *product, u32 drv_info)
{
	struct ieee80211_hw *hw;
	struct ath9k_htc_priv *priv;
	int ret;

	hw = ieee80211_alloc_hw(sizeof(struct ath9k_htc_priv), &ath9k_htc_ops);
	if (!hw)
		return -ENOMEM;

	priv = hw->priv;
	priv->hw = hw;
	priv->htc = htc_handle;
	priv->dev = dev;
	htc_handle->drv_priv = priv;
	SET_IEEE80211_DEV(hw, priv->dev);

	ret = ath9k_htc_wait_for_target(priv);
	if (ret)
		goto err_free;

	priv->wmi = ath9k_init_wmi(priv);
	if (!priv->wmi) {
		ret = -EINVAL;
		goto err_free;
	}

	ret = ath9k_init_htc_services(priv, devid, drv_info);
	if (ret)
		goto err_init;

	ret = ath9k_init_device(priv, devid, product, drv_info);
	if (ret)
		goto err_init;

	return 0;

err_init:
	ath9k_deinit_wmi(priv);
err_free:
	ieee80211_free_hw(hw);
	return ret;
}

void ath9k_htc_disconnect_device(struct htc_target *htc_handle, bool hotunplug)
{
	if (htc_handle->drv_priv) {

		/* Check if the device has been yanked out. */
		if (hotunplug)
			htc_handle->drv_priv->ah->ah_flags |= AH_UNPLUGGED;

		ath9k_deinit_device(htc_handle->drv_priv);
		ath9k_deinit_wmi(htc_handle->drv_priv);
		ieee80211_free_hw(htc_handle->drv_priv->hw);
	}
}

#ifdef CONFIG_PM

void ath9k_htc_suspend(struct htc_target *htc_handle)
{
	ath9k_htc_setpower(htc_handle->drv_priv, ATH9K_PM_FULL_SLEEP);
}

int ath9k_htc_resume(struct htc_target *htc_handle)
{
	struct ath9k_htc_priv *priv = htc_handle->drv_priv;
	int ret;

	ret = ath9k_htc_wait_for_target(priv);
	if (ret)
		return ret;

	ret = ath9k_init_htc_services(priv, priv->ah->hw_version.devid,
				      priv->ah->hw_version.usbdev);
	ath9k_configure_leds(priv);

	return ret;
}
#endif

static int __init ath9k_htc_init(void)
{
	if (ath9k_hif_usb_init() < 0) {
		pr_err("No USB devices found, driver not installed\n");
		return -ENODEV;
	}

	return 0;
}
module_init(ath9k_htc_init);

static void __exit ath9k_htc_exit(void)
{
	ath9k_hif_usb_exit();
	pr_info("Driver unloaded\n");
}
module_exit(ath9k_htc_exit);