atheros: put atheros wireless drivers into ath/

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 0 insertions, 1690 deletions

diff --git a/drivers/net/wireless/ar9170/main.c b/drivers/net/wireless/ar9170/main.c
deleted file mode 100644
index 8de0ff9f580..00000000000
--- a/drivers/net/wireless/ar9170/main.c
+++ /dev/null
@@ -1,1690 +0,0 @@
-/*
- * Atheros AR9170 driver
- *
- * mac80211 interaction code
- *
- * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
- * Copyright 2009, Christian Lamparter <chunkeey@web.de>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING.  If not, see
- * http://www.gnu.org/licenses/.
- *
- * This file incorporates work covered by the following copyright and
- * permission notice:
- *    Copyright (c) 2007-2008 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.
- */
-
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/etherdevice.h>
-#include <net/mac80211.h>
-#include "ar9170.h"
-#include "hw.h"
-#include "cmd.h"
-
-static int modparam_nohwcrypt;
-module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
-MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
-
-#define RATE(_bitrate, _hw_rate, _txpidx, _flags) {	\
-	.bitrate	= (_bitrate),			\
-	.flags		= (_flags),			\
-	.hw_value	= (_hw_rate) | (_txpidx) << 4,	\
-}
-
-static struct ieee80211_rate __ar9170_ratetable[] = {
-	RATE(10, 0, 0, 0),
-	RATE(20, 1, 1, IEEE80211_RATE_SHORT_PREAMBLE),
-	RATE(55, 2, 2, IEEE80211_RATE_SHORT_PREAMBLE),
-	RATE(110, 3, 3, IEEE80211_RATE_SHORT_PREAMBLE),
-	RATE(60, 0xb, 0, 0),
-	RATE(90, 0xf, 0, 0),
-	RATE(120, 0xa, 0, 0),
-	RATE(180, 0xe, 0, 0),
-	RATE(240, 0x9, 0, 0),
-	RATE(360, 0xd, 1, 0),
-	RATE(480, 0x8, 2, 0),
-	RATE(540, 0xc, 3, 0),
-};
-#undef RATE
-
-#define ar9170_g_ratetable	(__ar9170_ratetable + 0)
-#define ar9170_g_ratetable_size	12
-#define ar9170_a_ratetable	(__ar9170_ratetable + 4)
-#define ar9170_a_ratetable_size	8
-
-/*
- * NB: The hw_value is used as an index into the ar9170_phy_freq_params
- *     array in phy.c so that we don't have to do frequency lookups!
- */
-#define CHAN(_freq, _idx) {		\
-	.center_freq	= (_freq),	\
-	.hw_value	= (_idx),	\
-	.max_power	= 18, /* XXX */	\
-}
-
-static struct ieee80211_channel ar9170_2ghz_chantable[] = {
-	CHAN(2412,  0),
-	CHAN(2417,  1),
-	CHAN(2422,  2),
-	CHAN(2427,  3),
-	CHAN(2432,  4),
-	CHAN(2437,  5),
-	CHAN(2442,  6),
-	CHAN(2447,  7),
-	CHAN(2452,  8),
-	CHAN(2457,  9),
-	CHAN(2462, 10),
-	CHAN(2467, 11),
-	CHAN(2472, 12),
-	CHAN(2484, 13),
-};
-
-static struct ieee80211_channel ar9170_5ghz_chantable[] = {
-	CHAN(4920, 14),
-	CHAN(4940, 15),
-	CHAN(4960, 16),
-	CHAN(4980, 17),
-	CHAN(5040, 18),
-	CHAN(5060, 19),
-	CHAN(5080, 20),
-	CHAN(5180, 21),
-	CHAN(5200, 22),
-	CHAN(5220, 23),
-	CHAN(5240, 24),
-	CHAN(5260, 25),
-	CHAN(5280, 26),
-	CHAN(5300, 27),
-	CHAN(5320, 28),
-	CHAN(5500, 29),
-	CHAN(5520, 30),
-	CHAN(5540, 31),
-	CHAN(5560, 32),
-	CHAN(5580, 33),
-	CHAN(5600, 34),
-	CHAN(5620, 35),
-	CHAN(5640, 36),
-	CHAN(5660, 37),
-	CHAN(5680, 38),
-	CHAN(5700, 39),
-	CHAN(5745, 40),
-	CHAN(5765, 41),
-	CHAN(5785, 42),
-	CHAN(5805, 43),
-	CHAN(5825, 44),
-	CHAN(5170, 45),
-	CHAN(5190, 46),
-	CHAN(5210, 47),
-	CHAN(5230, 48),
-};
-#undef CHAN
-
-static struct ieee80211_supported_band ar9170_band_2GHz = {
-	.channels	= ar9170_2ghz_chantable,
-	.n_channels	= ARRAY_SIZE(ar9170_2ghz_chantable),
-	.bitrates	= ar9170_g_ratetable,
-	.n_bitrates	= ar9170_g_ratetable_size,
-};
-
-#ifdef AR9170_QUEUE_DEBUG
-/*
- * In case some wants works with AR9170's crazy tx_status queueing techniques.
- * He might need this rather useful probing function.
- *
- * NOTE: caller must hold the queue's spinlock!
- */
-
-static void ar9170_print_txheader(struct ar9170 *ar, struct sk_buff *skb)
-{
-	struct ar9170_tx_control *txc = (void *) skb->data;
-	struct ieee80211_hdr *hdr = (void *)txc->frame_data;
-
-	printk(KERN_DEBUG "%s: => FRAME [skb:%p, queue:%d, DA:[%pM] "
-			  "mac_control:%04x, phy_control:%08x]\n",
-	       wiphy_name(ar->hw->wiphy), skb, skb_get_queue_mapping(skb),
-	       ieee80211_get_DA(hdr), le16_to_cpu(txc->mac_control),
-	       le32_to_cpu(txc->phy_control));
-}
-
-static void ar9170_dump_station_tx_status_queue(struct ar9170 *ar,
-						struct sk_buff_head *queue)
-{
-	struct sk_buff *skb;
-	int i = 0;
-
-	printk(KERN_DEBUG "---[ cut here ]---\n");
-	printk(KERN_DEBUG "%s: %d entries in tx_status queue.\n",
-	       wiphy_name(ar->hw->wiphy), skb_queue_len(queue));
-
-	skb_queue_walk(queue, skb) {
-		struct ar9170_tx_control *txc = (void *) skb->data;
-		struct ieee80211_hdr *hdr = (void *)txc->frame_data;
-
-		printk(KERN_DEBUG "index:%d => \n", i);
-		ar9170_print_txheader(ar, skb);
-	}
-	printk(KERN_DEBUG "---[ end ]---\n");
-}
-#endif /* AR9170_QUEUE_DEBUG */
-
-static struct ieee80211_supported_band ar9170_band_5GHz = {
-	.channels	= ar9170_5ghz_chantable,
-	.n_channels	= ARRAY_SIZE(ar9170_5ghz_chantable),
-	.bitrates	= ar9170_a_ratetable,
-	.n_bitrates	= ar9170_a_ratetable_size,
-};
-
-void ar9170_handle_tx_status(struct ar9170 *ar, struct sk_buff *skb,
-			     bool valid_status, u16 tx_status)
-{
-	struct ieee80211_tx_info *txinfo;
-	unsigned int retries = 0, queue = skb_get_queue_mapping(skb);
-	unsigned long flags;
-
-	spin_lock_irqsave(&ar->tx_stats_lock, flags);
-	ar->tx_stats[queue].len--;
-	if (ieee80211_queue_stopped(ar->hw, queue))
-		ieee80211_wake_queue(ar->hw, queue);
-	spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
-	txinfo = IEEE80211_SKB_CB(skb);
-	ieee80211_tx_info_clear_status(txinfo);
-
-	switch (tx_status) {
-	case AR9170_TX_STATUS_RETRY:
-		retries = 2;
-	case AR9170_TX_STATUS_COMPLETE:
-		txinfo->flags |= IEEE80211_TX_STAT_ACK;
-		break;
-
-	case AR9170_TX_STATUS_FAILED:
-		retries = ar->hw->conf.long_frame_max_tx_count;
-		break;
-
-	default:
-		printk(KERN_ERR "%s: invalid tx_status response (%x).\n",
-		       wiphy_name(ar->hw->wiphy), tx_status);
-		break;
-	}
-
-	if (valid_status)
-		txinfo->status.rates[0].count = retries + 1;
-
-	skb_pull(skb, sizeof(struct ar9170_tx_control));
-	ieee80211_tx_status_irqsafe(ar->hw, skb);
-}
-
-static struct sk_buff *ar9170_find_skb_in_queue(struct ar9170 *ar,
-						const u8 *mac,
-						const u32 queue,
-						struct sk_buff_head *q)
-{
-	unsigned long flags;
-	struct sk_buff *skb;
-
-	spin_lock_irqsave(&q->lock, flags);
-	skb_queue_walk(q, skb) {
-		struct ar9170_tx_control *txc = (void *) skb->data;
-		struct ieee80211_hdr *hdr = (void *) txc->frame_data;
-		u32 txc_queue = (le32_to_cpu(txc->phy_control) &
-				AR9170_TX_PHY_QOS_MASK) >>
-				AR9170_TX_PHY_QOS_SHIFT;
-
-		if  ((queue != txc_queue) ||
-		     (compare_ether_addr(ieee80211_get_DA(hdr), mac)))
-			continue;
-
-		__skb_unlink(skb, q);
-		spin_unlock_irqrestore(&q->lock, flags);
-		return skb;
-	}
-	spin_unlock_irqrestore(&q->lock, flags);
-	return NULL;
-}
-
-static struct sk_buff *ar9170_find_queued_skb(struct ar9170 *ar, const u8 *mac,
-					      const u32 queue)
-{
-	struct ieee80211_sta *sta;
-	struct sk_buff *skb;
-
-	/*
-	 * Unfortunately, the firmware does not tell to which (queued) frame
-	 * this transmission status report belongs to.
-	 *
-	 * So we have to make risky guesses - with the scarce information
-	 * the firmware provided (-> destination MAC, and phy_control) -
-	 * and hope that we picked the right one...
-	 */
-	rcu_read_lock();
-	sta = ieee80211_find_sta(ar->hw, mac);
-
-	if (likely(sta)) {
-		struct ar9170_sta_info *sta_priv = (void *) sta->drv_priv;
-		skb = skb_dequeue(&sta_priv->tx_status[queue]);
-		rcu_read_unlock();
-		if (likely(skb))
-			return skb;
-	} else
-		rcu_read_unlock();
-
-	/* scan the waste queue for candidates */
-	skb = ar9170_find_skb_in_queue(ar, mac, queue,
-				       &ar->global_tx_status_waste);
-	if (!skb) {
-		/* so it still _must_ be in the global list. */
-		skb = ar9170_find_skb_in_queue(ar, mac, queue,
-					       &ar->global_tx_status);
-	}
-
-#ifdef AR9170_QUEUE_DEBUG
-	if (unlikely((!skb) && net_ratelimit())) {
-		printk(KERN_ERR "%s: ESS:[%pM] does not have any "
-				"outstanding frames in this queue (%d).\n",
-				wiphy_name(ar->hw->wiphy), mac, queue);
-	}
-#endif /* AR9170_QUEUE_DEBUG */
-	return skb;
-}
-
-/*
- * This worker tries to keep the global tx_status queue empty.
- * So we can guarantee that incoming tx_status reports for
- * unregistered stations are always synced with the actual
- * frame - which we think - belongs to.
- */
-
-static void ar9170_tx_status_janitor(struct work_struct *work)
-{
-	struct ar9170 *ar = container_of(work, struct ar9170,
-					 tx_status_janitor.work);
-	struct sk_buff *skb;
-
-	if (unlikely(!IS_STARTED(ar)))
-		return ;
-
-	mutex_lock(&ar->mutex);
-	/* recycle the garbage back to mac80211... one by one. */
-	while ((skb = skb_dequeue(&ar->global_tx_status_waste))) {
-#ifdef AR9170_QUEUE_DEBUG
-		printk(KERN_DEBUG "%s: dispose queued frame =>\n",
-		       wiphy_name(ar->hw->wiphy));
-		ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
-		ar9170_handle_tx_status(ar, skb, false,
-					AR9170_TX_STATUS_FAILED);
-	}
-
-	while ((skb = skb_dequeue(&ar->global_tx_status))) {
-#ifdef AR9170_QUEUE_DEBUG
-		printk(KERN_DEBUG "%s: moving frame into waste queue =>\n",
-		       wiphy_name(ar->hw->wiphy));
-
-		ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
-		skb_queue_tail(&ar->global_tx_status_waste, skb);
-	}
-
-	/* recall the janitor in 100ms - if there's garbage in the can. */
-	if (skb_queue_len(&ar->global_tx_status_waste) > 0)
-		queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor,
-				   msecs_to_jiffies(100));
-
-	mutex_unlock(&ar->mutex);
-}
-
-static void ar9170_handle_command_response(struct ar9170 *ar,
-					   void *buf, u32 len)
-{
-	struct ar9170_cmd_response *cmd = (void *) buf;
-
-	if ((cmd->type & 0xc0) != 0xc0) {
-		ar->callback_cmd(ar, len, buf);
-		return;
-	}
-
-	/* hardware event handlers */
-	switch (cmd->type) {
-	case 0xc1: {
-		/*
-		 * TX status notification:
-		 * bytes: 0c c1 XX YY M1 M2 M3 M4 M5 M6 R4 R3 R2 R1 S2 S1
-		 *
-		 * XX always 81
-		 * YY always 00
-		 * M1-M6 is the MAC address
-		 * R1-R4 is the transmit rate
-		 * S1-S2 is the transmit status
-		 */
-
-		struct sk_buff *skb;
-		u32 queue = (le32_to_cpu(cmd->tx_status.rate) &
-			    AR9170_TX_PHY_QOS_MASK) >> AR9170_TX_PHY_QOS_SHIFT;
-
-		skb = ar9170_find_queued_skb(ar, cmd->tx_status.dst, queue);
-		if (unlikely(!skb))
-			return ;
-
-		ar9170_handle_tx_status(ar, skb, true,
-					le16_to_cpu(cmd->tx_status.status));
-		break;
-		}
-
-	case 0xc0:
-		/*
-		 * pre-TBTT event
-		 */
-		if (ar->vif && ar->vif->type == NL80211_IFTYPE_AP)
-			queue_work(ar->hw->workqueue, &ar->beacon_work);
-		break;
-
-	case 0xc2:
-		/*
-		 * (IBSS) beacon send notification
-		 * bytes: 04 c2 XX YY B4 B3 B2 B1
-		 *
-		 * XX always 80
-		 * YY always 00
-		 * B1-B4 "should" be the number of send out beacons.
-		 */
-		break;
-
-	case 0xc3:
-		/* End of Atim Window */
-		break;
-
-	case 0xc4:
-	case 0xc5:
-		/* BlockACK events */
-		break;
-
-	case 0xc6:
-		/* Watchdog Interrupt */
-		break;
-
-	case 0xc9:
-		/* retransmission issue / SIFS/EIFS collision ?! */
-		break;
-
-	default:
-		printk(KERN_INFO "received unhandled event %x\n", cmd->type);
-		print_hex_dump_bytes("dump:", DUMP_PREFIX_NONE, buf, len);
-		break;
-	}
-}
-
-/*
- * If the frame alignment is right (or the kernel has
- * CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS), and there
- * is only a single MPDU in the USB frame, then we can
- * submit to mac80211 the SKB directly. However, since
- * there may be multiple packets in one SKB in stream
- * mode, and we need to observe the proper ordering,
- * this is non-trivial.
- */
-static void ar9170_handle_mpdu(struct ar9170 *ar, u8 *buf, int len)
-{
-	struct sk_buff *skb;
-	struct ar9170_rx_head *head = (void *)buf;
-	struct ar9170_rx_tail *tail;
-	struct ieee80211_rx_status status;
-	int mpdu_len, i;
-	u8 error, antennas = 0, decrypt;
-	__le16 fc;
-	int reserved;
-
-	if (unlikely(!IS_STARTED(ar)))
-		return ;
-
-	/* Received MPDU */
-	mpdu_len = len;
-	mpdu_len -= sizeof(struct ar9170_rx_head);
-	mpdu_len -= sizeof(struct ar9170_rx_tail);
-	BUILD_BUG_ON(sizeof(struct ar9170_rx_head) != 12);
-	BUILD_BUG_ON(sizeof(struct ar9170_rx_tail) != 24);
-
-	if (mpdu_len <= FCS_LEN)
-		return;
-
-	tail = (void *)(buf + sizeof(struct ar9170_rx_head) + mpdu_len);
-
-	for (i = 0; i < 3; i++)
-		if (tail->rssi[i] != 0x80)
-			antennas |= BIT(i);
-
-	/* post-process RSSI */
-	for (i = 0; i < 7; i++)
-		if (tail->rssi[i] & 0x80)
-			tail->rssi[i] = ((tail->rssi[i] & 0x7f) + 1) & 0x7f;
-
-	memset(&status, 0, sizeof(status));
-
-	status.band = ar->channel->band;
-	status.freq = ar->channel->center_freq;
-	status.signal = ar->noise[0] + tail->rssi_combined;
-	status.noise = ar->noise[0];
-	status.antenna = antennas;
-
-	switch (tail->status & AR9170_RX_STATUS_MODULATION_MASK) {
-	case AR9170_RX_STATUS_MODULATION_CCK:
-		if (tail->status & AR9170_RX_STATUS_SHORT_PREAMBLE)
-			status.flag |= RX_FLAG_SHORTPRE;
-		switch (head->plcp[0]) {
-		case 0x0a:
-			status.rate_idx = 0;
-			break;
-		case 0x14:
-			status.rate_idx = 1;
-			break;
-		case 0x37:
-			status.rate_idx = 2;
-			break;
-		case 0x6e:
-			status.rate_idx = 3;
-			break;
-		default:
-			if ((!ar->sniffer_enabled) && (net_ratelimit()))
-				printk(KERN_ERR "%s: invalid plcp cck rate "
-				       "(%x).\n", wiphy_name(ar->hw->wiphy),
-				       head->plcp[0]);
-			return;
-		}
-		break;
-	case AR9170_RX_STATUS_MODULATION_OFDM:
-		switch (head->plcp[0] & 0xF) {
-		case 0xB:
-			status.rate_idx = 0;
-			break;
-		case 0xF:
-			status.rate_idx = 1;
-			break;
-		case 0xA:
-			status.rate_idx = 2;
-			break;
-		case 0xE:
-			status.rate_idx = 3;
-			break;
-		case 0x9:
-			status.rate_idx = 4;
-			break;
-		case 0xD:
-			status.rate_idx = 5;
-			break;
-		case 0x8:
-			status.rate_idx = 6;
-			break;
-		case 0xC:
-			status.rate_idx = 7;
-			break;
-		default:
-			if ((!ar->sniffer_enabled) && (net_ratelimit()))
-				printk(KERN_ERR "%s: invalid plcp ofdm rate "
-				       "(%x).\n", wiphy_name(ar->hw->wiphy),
-				       head->plcp[0]);
-			return;
-		}
-		if (status.band == IEEE80211_BAND_2GHZ)
-			status.rate_idx += 4;
-		break;
-	case AR9170_RX_STATUS_MODULATION_HT:
-	case AR9170_RX_STATUS_MODULATION_DUPOFDM:
-		/* XXX */
-
-		if (net_ratelimit())
-			printk(KERN_ERR "%s: invalid modulation\n",
-			       wiphy_name(ar->hw->wiphy));
-		return;
-	}
-
-	error = tail->error;
-
-	if (error & AR9170_RX_ERROR_MMIC) {
-		status.flag |= RX_FLAG_MMIC_ERROR;
-		error &= ~AR9170_RX_ERROR_MMIC;
-	}
-
-	if (error & AR9170_RX_ERROR_PLCP) {
-		status.flag |= RX_FLAG_FAILED_PLCP_CRC;
-		error &= ~AR9170_RX_ERROR_PLCP;
-	}
-
-	if (error & AR9170_RX_ERROR_FCS) {
-		status.flag |= RX_FLAG_FAILED_FCS_CRC;
-		error &= ~AR9170_RX_ERROR_FCS;
-	}
-
-	decrypt = ar9170_get_decrypt_type(tail);
-	if (!(decrypt & AR9170_RX_ENC_SOFTWARE) &&
-	    decrypt != AR9170_ENC_ALG_NONE)
-		status.flag |= RX_FLAG_DECRYPTED;
-
-	/* ignore wrong RA errors */
-	error &= ~AR9170_RX_ERROR_WRONG_RA;
-
-	if (error & AR9170_RX_ERROR_DECRYPT) {
-		error &= ~AR9170_RX_ERROR_DECRYPT;
-
-		/*
-		 * Rx decryption is done in place,
-		 * the original data is lost anyway.
-		 */
-		return ;
-	}
-
-	/* drop any other error frames */
-	if ((error) && (net_ratelimit())) {
-		printk(KERN_DEBUG "%s: errors: %#x\n",
-		       wiphy_name(ar->hw->wiphy), error);
-		return;
-	}
-
-	buf += sizeof(struct ar9170_rx_head);
-	fc = *(__le16 *)buf;
-
-	if (ieee80211_is_data_qos(fc) ^ ieee80211_has_a4(fc))
-		reserved = 32 + 2;
-	else
-		reserved = 32;
-
-	skb = dev_alloc_skb(mpdu_len + reserved);
-	if (!skb)
-		return;
-
-	skb_reserve(skb, reserved);
-	memcpy(skb_put(skb, mpdu_len), buf, mpdu_len);
-	ieee80211_rx_irqsafe(ar->hw, skb, &status);
-}
-
-void ar9170_rx(struct ar9170 *ar, struct sk_buff *skb)
-{
-	unsigned int i, tlen, resplen;
-	u8 *tbuf, *respbuf;
-
-	tbuf = skb->data;
-	tlen = skb->len;
-
-	while (tlen >= 4) {
-		int clen = tbuf[1] << 8 | tbuf[0];
-		int wlen = (clen + 3) & ~3;
-
-		/*
-		 * parse stream (if any)
-		 */
-		if (tbuf[2] != 0 || tbuf[3] != 0x4e) {
-			printk(KERN_ERR "%s: missing tag!\n",
-			       wiphy_name(ar->hw->wiphy));
-			return ;
-		}
-		if (wlen > tlen - 4) {
-			printk(KERN_ERR "%s: invalid RX (%d, %d, %d)\n",
-			       wiphy_name(ar->hw->wiphy), clen, wlen, tlen);
-			print_hex_dump(KERN_DEBUG, "data: ",
-				       DUMP_PREFIX_OFFSET,
-				       16, 1, tbuf, tlen, true);
-			return ;
-		}
-		resplen = clen;
-		respbuf = tbuf + 4;
-		tbuf += wlen + 4;
-		tlen -= wlen + 4;
-
-		i = 0;
-
-		/* weird thing, but this is the same in the original driver */
-		while (resplen > 2 && i < 12 &&
-		       respbuf[0] == 0xff && respbuf[1] == 0xff) {
-			i += 2;
-			resplen -= 2;
-			respbuf += 2;
-		}
-
-		if (resplen < 4)
-			continue;
-
-		/* found the 6 * 0xffff marker? */
-		if (i == 12)
-			ar9170_handle_command_response(ar, respbuf, resplen);
-		else
-			ar9170_handle_mpdu(ar, respbuf, resplen);
-	}
-
-	if (tlen)
-		printk(KERN_ERR "%s: buffer remains!\n",
-		       wiphy_name(ar->hw->wiphy));
-}
-
-#define AR9170_FILL_QUEUE(queue, ai_fs, cwmin, cwmax, _txop)		\
-do {									\
-	queue.aifs = ai_fs;						\
-	queue.cw_min = cwmin;						\
-	queue.cw_max = cwmax;						\
-	queue.txop = _txop;						\
-} while (0)
-
-static int ar9170_op_start(struct ieee80211_hw *hw)
-{
-	struct ar9170 *ar = hw->priv;
-	int err, i;
-
-	mutex_lock(&ar->mutex);
-
-	/* reinitialize queues statistics */
-	memset(&ar->tx_stats, 0, sizeof(ar->tx_stats));
-	for (i = 0; i < ARRAY_SIZE(ar->tx_stats); i++)
-		ar->tx_stats[i].limit = 8;
-
-	/* reset QoS defaults */
-	AR9170_FILL_QUEUE(ar->edcf[0], 3, 15, 1023,  0); /* BEST EFFORT*/
-	AR9170_FILL_QUEUE(ar->edcf[1], 7, 15, 1023,  0); /* BACKGROUND */
-	AR9170_FILL_QUEUE(ar->edcf[2], 2, 7,    15, 94); /* VIDEO */
-	AR9170_FILL_QUEUE(ar->edcf[3], 2, 3,     7, 47); /* VOICE */
-	AR9170_FILL_QUEUE(ar->edcf[4], 2, 3,     7,  0); /* SPECIAL */
-
-	err = ar->open(ar);
-	if (err)
-		goto out;
-
-	err = ar9170_init_mac(ar);
-	if (err)
-		goto out;
-
-	err = ar9170_set_qos(ar);
-	if (err)
-		goto out;
-
-	err = ar9170_init_phy(ar, IEEE80211_BAND_2GHZ);
-	if (err)
-		goto out;
-
-	err = ar9170_init_rf(ar);
-	if (err)
-		goto out;
-
-	/* start DMA */
-	err = ar9170_write_reg(ar, 0x1c3d30, 0x100);
-	if (err)
-		goto out;
-
-	ar->state = AR9170_STARTED;
-
-out:
-	mutex_unlock(&ar->mutex);
-	return err;
-}
-
-static void ar9170_op_stop(struct ieee80211_hw *hw)
-{
-	struct ar9170 *ar = hw->priv;
-
-	if (IS_STARTED(ar))
-		ar->state = AR9170_IDLE;
-
-	flush_workqueue(ar->hw->workqueue);
-
-	mutex_lock(&ar->mutex);
-	cancel_delayed_work_sync(&ar->tx_status_janitor);
-	cancel_work_sync(&ar->filter_config_work);
-	cancel_work_sync(&ar->beacon_work);
-	skb_queue_purge(&ar->global_tx_status_waste);
-	skb_queue_purge(&ar->global_tx_status);
-
-	if (IS_ACCEPTING_CMD(ar)) {
-		ar9170_set_leds_state(ar, 0);
-
-		/* stop DMA */
-		ar9170_write_reg(ar, 0x1c3d30, 0);
-		ar->stop(ar);
-	}
-
-	mutex_unlock(&ar->mutex);
-}
-
-int ar9170_op_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
-{
-	struct ar9170 *ar = hw->priv;
-	struct ieee80211_hdr *hdr;
-	struct ar9170_tx_control *txc;
-	struct ieee80211_tx_info *info;
-	struct ieee80211_rate *rate = NULL;
-	struct ieee80211_tx_rate *txrate;
-	unsigned int queue = skb_get_queue_mapping(skb);
-	unsigned long flags = 0;
-	struct ar9170_sta_info *sta_info = NULL;
-	u32 power, chains;
-	u16 keytype = 0;
-	u16 len, icv = 0;
-	int err;
-	bool tx_status;
-
-	if (unlikely(!IS_STARTED(ar)))
-		goto err_free;
-
-	hdr = (void *)skb->data;
-	info = IEEE80211_SKB_CB(skb);
-	len = skb->len;
-
-	spin_lock_irqsave(&ar->tx_stats_lock, flags);
-	if (ar->tx_stats[queue].limit < ar->tx_stats[queue].len) {
-		spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-		return NETDEV_TX_OK;
-	}
-
-	ar->tx_stats[queue].len++;
-	ar->tx_stats[queue].count++;
-	if (ar->tx_stats[queue].limit == ar->tx_stats[queue].len)
-		ieee80211_stop_queue(hw, queue);
-
-	spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
-	txc = (void *)skb_push(skb, sizeof(*txc));
-
-	tx_status = (((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) != 0) ||
-		    ((info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS) != 0));
-
-	if (info->control.hw_key) {
-		icv = info->control.hw_key->icv_len;
-
-		switch (info->control.hw_key->alg) {
-		case ALG_WEP:
-			keytype = AR9170_TX_MAC_ENCR_RC4;
-			break;
-		case ALG_TKIP:
-			keytype = AR9170_TX_MAC_ENCR_RC4;
-			break;
-		case ALG_CCMP:
-			keytype = AR9170_TX_MAC_ENCR_AES;
-			break;
-		default:
-			WARN_ON(1);
-			goto err_dequeue;
-		}
-	}
-
-	/* Length */
-	txc->length = cpu_to_le16(len + icv + 4);
-
-	txc->mac_control = cpu_to_le16(AR9170_TX_MAC_HW_DURATION |
-				       AR9170_TX_MAC_BACKOFF);
-	txc->mac_control |= cpu_to_le16(ar9170_qos_hwmap[queue] <<
-					AR9170_TX_MAC_QOS_SHIFT);
-	txc->mac_control |= cpu_to_le16(keytype);
-	txc->phy_control = cpu_to_le32(0);
-
-	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
-		txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_NO_ACK);
-
-	if (info->flags & IEEE80211_TX_CTL_AMPDU)
-		txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_AGGR);
-
-	txrate = &info->control.rates[0];
-
-	if (txrate->flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
-		txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_CTS);
-	else if (txrate->flags & IEEE80211_TX_RC_USE_RTS_CTS)
-		txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_PROT_RTS);
-
-	if (txrate->flags & IEEE80211_TX_RC_GREEN_FIELD)
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_GREENFIELD);
-
-	if (txrate->flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_PREAMBLE);
-
-	if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ);
-	/* this works because 40 MHz is 2 and dup is 3 */
-	if (txrate->flags & IEEE80211_TX_RC_DUP_DATA)
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_BW_40MHZ_DUP);
-
-	if (txrate->flags & IEEE80211_TX_RC_SHORT_GI)
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_SHORT_GI);
-
-	if (txrate->flags & IEEE80211_TX_RC_MCS) {
-		u32 r = txrate->idx;
-		u8 *txpower;
-
-		r <<= AR9170_TX_PHY_MCS_SHIFT;
-		if (WARN_ON(r & ~AR9170_TX_PHY_MCS_MASK))
-			goto err_dequeue;
-		txc->phy_control |= cpu_to_le32(r & AR9170_TX_PHY_MCS_MASK);
-		txc->phy_control |= cpu_to_le32(AR9170_TX_PHY_MOD_HT);
-
-		if (txrate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH) {
-			if (info->band == IEEE80211_BAND_5GHZ)
-				txpower = ar->power_5G_ht40;
-			else
-				txpower = ar->power_2G_ht40;
-		} else {
-			if (info->band == IEEE80211_BAND_5GHZ)
-				txpower = ar->power_5G_ht20;
-			else
-				txpower = ar->power_2G_ht20;
-		}
-
-		power = txpower[(txrate->idx) & 7];
-	} else {
-		u8 *txpower;
-		u32 mod;
-		u32 phyrate;
-		u8 idx = txrate->idx;
-
-		if (info->band != IEEE80211_BAND_2GHZ) {
-			idx += 4;
-			txpower = ar->power_5G_leg;
-			mod = AR9170_TX_PHY_MOD_OFDM;
-		} else {
-			if (idx < 4) {
-				txpower = ar->power_2G_cck;
-				mod = AR9170_TX_PHY_MOD_CCK;
-			} else {
-				mod = AR9170_TX_PHY_MOD_OFDM;
-				txpower = ar->power_2G_ofdm;
-			}
-		}
-
-		rate = &__ar9170_ratetable[idx];
-
-		phyrate = rate->hw_value & 0xF;
-		power = txpower[(rate->hw_value & 0x30) >> 4];
-		phyrate <<= AR9170_TX_PHY_MCS_SHIFT;
-
-		txc->phy_control |= cpu_to_le32(mod);
-		txc->phy_control |= cpu_to_le32(phyrate);
-	}
-
-	power <<= AR9170_TX_PHY_TX_PWR_SHIFT;
-	power &= AR9170_TX_PHY_TX_PWR_MASK;
-	txc->phy_control |= cpu_to_le32(power);
-
-	/* set TX chains */
-	if (ar->eeprom.tx_mask == 1) {
-		chains = AR9170_TX_PHY_TXCHAIN_1;
-	} else {
-		chains = AR9170_TX_PHY_TXCHAIN_2;
-
-		/* >= 36M legacy OFDM - use only one chain */
-		if (rate && rate->bitrate >= 360)
-			chains = AR9170_TX_PHY_TXCHAIN_1;
-	}
-	txc->phy_control |= cpu_to_le32(chains << AR9170_TX_PHY_TXCHAIN_SHIFT);
-
-	if (tx_status) {
-		txc->mac_control |= cpu_to_le16(AR9170_TX_MAC_RATE_PROBE);
-		/*
-		 * WARNING:
-		 * Putting the QoS queue bits into an unexplored territory is
-		 * certainly not elegant.
-		 *
-		 * In my defense: This idea provides a reasonable way to
-		 * smuggle valuable information to the tx_status callback.
-		 * Also, the idea behind this bit-abuse came straight from
-		 * the original driver code.
-		 */
-
-		txc->phy_control |=
-			cpu_to_le32(queue << AR9170_TX_PHY_QOS_SHIFT);
-
-		if (info->control.sta) {
-			sta_info = (void *) info->control.sta->drv_priv;
-			skb_queue_tail(&sta_info->tx_status[queue], skb);
-		} else {
-			skb_queue_tail(&ar->global_tx_status, skb);
-
-			queue_delayed_work(ar->hw->workqueue,
-					   &ar->tx_status_janitor,
-					   msecs_to_jiffies(100));
-		}
-	}
-
-	err = ar->tx(ar, skb, tx_status, 0);
-	if (unlikely(tx_status && err)) {
-		if (info->control.sta)
-			skb_unlink(skb, &sta_info->tx_status[queue]);
-		else
-			skb_unlink(skb, &ar->global_tx_status);
-	}
-
-	return NETDEV_TX_OK;
-
-err_dequeue:
-	spin_lock_irqsave(&ar->tx_stats_lock, flags);
-	ar->tx_stats[queue].len--;
-	ar->tx_stats[queue].count--;
-	spin_unlock_irqrestore(&ar->tx_stats_lock, flags);
-
-err_free:
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-static int ar9170_op_add_interface(struct ieee80211_hw *hw,
-				   struct ieee80211_if_init_conf *conf)
-{
-	struct ar9170 *ar = hw->priv;
-	int err = 0;
-
-	mutex_lock(&ar->mutex);
-
-	if (ar->vif) {
-		err = -EBUSY;
-		goto unlock;
-	}
-
-	ar->vif = conf->vif;
-	memcpy(ar->mac_addr, conf->mac_addr, ETH_ALEN);
-
-	if (modparam_nohwcrypt || (ar->vif->type != NL80211_IFTYPE_STATION)) {
-		ar->rx_software_decryption = true;
-		ar->disable_offload = true;
-	}
-
-	ar->cur_filter = 0;
-	ar->want_filter = AR9170_MAC_REG_FTF_DEFAULTS;
-	err = ar9170_update_frame_filter(ar);
-	if (err)
-		goto unlock;
-
-	err = ar9170_set_operating_mode(ar);
-
-unlock:
-	mutex_unlock(&ar->mutex);
-	return err;
-}
-
-static void ar9170_op_remove_interface(struct ieee80211_hw *hw,
-				       struct ieee80211_if_init_conf *conf)
-{
-	struct ar9170 *ar = hw->priv;
-
-	mutex_lock(&ar->mutex);
-	ar->vif = NULL;
-	ar->want_filter = 0;
-	ar9170_update_frame_filter(ar);
-	ar9170_set_beacon_timers(ar);
-	dev_kfree_skb(ar->beacon);
-	ar->beacon = NULL;
-	ar->sniffer_enabled = false;
-	ar->rx_software_decryption = false;
-	ar9170_set_operating_mode(ar);
-	mutex_unlock(&ar->mutex);
-}
-
-static int ar9170_op_config(struct ieee80211_hw *hw, u32 changed)
-{
-	struct ar9170 *ar = hw->priv;
-	int err = 0;
-
-	mutex_lock(&ar->mutex);
-
-	if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
-		/* TODO */
-		err = 0;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_LISTEN_INTERVAL) {
-		/* TODO */
-		err = 0;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_PS) {
-		/* TODO */
-		err = 0;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_POWER) {
-		/* TODO */
-		err = 0;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_RETRY_LIMITS) {
-		/*
-		 * is it long_frame_max_tx_count or short_frame_max_tx_count?
-		 */
-
-		err = ar9170_set_hwretry_limit(ar,
-			ar->hw->conf.long_frame_max_tx_count);
-		if (err)
-			goto out;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_BEACON_INTERVAL) {
-		err = ar9170_set_beacon_timers(ar);
-		if (err)
-			goto out;
-	}
-
-	if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
-		err = ar9170_set_channel(ar, hw->conf.channel,
-					 AR9170_RFI_NONE, AR9170_BW_20);
-		if (err)
-			goto out;
-		/* adjust slot time for 5 GHz */
-		if (hw->conf.channel->band == IEEE80211_BAND_5GHZ)
-			err = ar9170_write_reg(ar, AR9170_MAC_REG_SLOT_TIME,
-					       9 << 10);
-	}
-
-out:
-	mutex_unlock(&ar->mutex);
-	return err;
-}
-
-static int ar9170_op_config_interface(struct ieee80211_hw *hw,
-				      struct ieee80211_vif *vif,
-				      struct ieee80211_if_conf *conf)
-{
-	struct ar9170 *ar = hw->priv;
-	int err = 0;
-
-	mutex_lock(&ar->mutex);
-
-	if (conf->changed & IEEE80211_IFCC_BSSID) {
-		memcpy(ar->bssid, conf->bssid, ETH_ALEN);
-		err = ar9170_set_operating_mode(ar);
-	}
-
-	if (conf->changed & IEEE80211_IFCC_BEACON) {
-		err = ar9170_update_beacon(ar);
-
-		if (err)
-			goto out;
-		err = ar9170_set_beacon_timers(ar);
-	}
-
-out:
-	mutex_unlock(&ar->mutex);
-	return err;
-}
-
-static void ar9170_set_filters(struct work_struct *work)
-{
-	struct ar9170 *ar = container_of(work, struct ar9170,
-					 filter_config_work);
-	int err;
-
-	if (unlikely(!IS_STARTED(ar)))
-		return ;
-
-	mutex_lock(&ar->mutex);
-	if (ar->filter_changed & AR9170_FILTER_CHANGED_PROMISC) {
-		err = ar9170_set_operating_mode(ar);
-		if (err)
-			goto unlock;
-	}
-
-	if (ar->filter_changed & AR9170_FILTER_CHANGED_MULTICAST) {
-		err = ar9170_update_multicast(ar);
-		if (err)
-			goto unlock;
-	}
-
-	if (ar->filter_changed & AR9170_FILTER_CHANGED_FRAMEFILTER)
-		err = ar9170_update_frame_filter(ar);
-
-unlock:
-	mutex_unlock(&ar->mutex);
-}
-
-static void ar9170_op_configure_filter(struct ieee80211_hw *hw,
-				       unsigned int changed_flags,
-				       unsigned int *new_flags,
-				       int mc_count, struct dev_mc_list *mclist)
-{
-	struct ar9170 *ar = hw->priv;
-
-	/* mask supported flags */
-	*new_flags &= FIF_ALLMULTI | FIF_CONTROL | FIF_BCN_PRBRESP_PROMISC |
-		      FIF_PROMISC_IN_BSS;
-
-	/*
-	 * We can support more by setting the sniffer bit and
-	 * then checking the error flags, later.
-	 */
-
-	if (changed_flags & FIF_ALLMULTI) {
-		if (*new_flags & FIF_ALLMULTI) {
-			ar->want_mc_hash = ~0ULL;
-		} else {
-			u64 mchash;
-			int i;
-
-			/* always get broadcast frames */
-			mchash = 1ULL << (0xff>>2);
-
-			for (i = 0; i < mc_count; i++) {
-				if (WARN_ON(!mclist))
-					break;
-				mchash |= 1ULL << (mclist->dmi_addr[5] >> 2);
-				mclist = mclist->next;
-			}
-		ar->want_mc_hash = mchash;
-		}
-		ar->filter_changed |= AR9170_FILTER_CHANGED_MULTICAST;
-	}
-
-	if (changed_flags & FIF_CONTROL) {
-		u32 filter = AR9170_MAC_REG_FTF_PSPOLL |
-			     AR9170_MAC_REG_FTF_RTS |
-			     AR9170_MAC_REG_FTF_CTS |
-			     AR9170_MAC_REG_FTF_ACK |
-			     AR9170_MAC_REG_FTF_CFE |
-			     AR9170_MAC_REG_FTF_CFE_ACK;
-
-		if (*new_flags & FIF_CONTROL)
-			ar->want_filter = ar->cur_filter | filter;
-		else
-			ar->want_filter = ar->cur_filter & ~filter;
-
-		ar->filter_changed |= AR9170_FILTER_CHANGED_FRAMEFILTER;
-	}
-
-	if (changed_flags & FIF_PROMISC_IN_BSS) {
-		ar->sniffer_enabled = ((*new_flags) & FIF_PROMISC_IN_BSS) != 0;
-		ar->filter_changed |= AR9170_FILTER_CHANGED_PROMISC;
-	}
-
-	if (likely(IS_STARTED(ar)))
-		queue_work(ar->hw->workqueue, &ar->filter_config_work);
-}
-
-static void ar9170_op_bss_info_changed(struct ieee80211_hw *hw,
-				       struct ieee80211_vif *vif,
-				       struct ieee80211_bss_conf *bss_conf,
-				       u32 changed)
-{
-	struct ar9170 *ar = hw->priv;
-	int err = 0;
-
-	mutex_lock(&ar->mutex);
-
-	ar9170_regwrite_begin(ar);
-
-	if (changed & BSS_CHANGED_ASSOC) {
-		ar->state = bss_conf->assoc ? AR9170_ASSOCIATED : ar->state;
-
-#ifndef CONFIG_AR9170_LEDS
-		/* enable assoc LED. */
-		err = ar9170_set_leds_state(ar, bss_conf->assoc ? 2 : 0);
-#endif /* CONFIG_AR9170_LEDS */
-	}
-
-	if (changed & BSS_CHANGED_HT) {
-		/* TODO */
-		err = 0;
-	}
-
-	if (changed & BSS_CHANGED_ERP_SLOT) {
-		u32 slottime = 20;
-
-		if (bss_conf->use_short_slot)
-			slottime = 9;
-
-		ar9170_regwrite(AR9170_MAC_REG_SLOT_TIME, slottime << 10);
-	}
-
-	if (changed & BSS_CHANGED_BASIC_RATES) {
-		u32 cck, ofdm;
-
-		if (hw->conf.channel->band == IEEE80211_BAND_5GHZ) {
-			ofdm = bss_conf->basic_rates;
-			cck = 0;
-		} else {
-			/* four cck rates */
-			cck = bss_conf->basic_rates & 0xf;
-			ofdm = bss_conf->basic_rates >> 4;
-		}
-		ar9170_regwrite(AR9170_MAC_REG_BASIC_RATE,
-				ofdm << 8 | cck);
-	}
-
-	ar9170_regwrite_finish();
-	err = ar9170_regwrite_result();
-	mutex_unlock(&ar->mutex);
-}
-
-static u64 ar9170_op_get_tsf(struct ieee80211_hw *hw)
-{
-	struct ar9170 *ar = hw->priv;
-	int err;
-	u32 tsf_low;
-	u32 tsf_high;
-	u64 tsf;
-
-	mutex_lock(&ar->mutex);
-	err = ar9170_read_reg(ar, AR9170_MAC_REG_TSF_L, &tsf_low);
-	if (!err)
-		err = ar9170_read_reg(ar, AR9170_MAC_REG_TSF_H, &tsf_high);
-	mutex_unlock(&ar->mutex);
-
-	if (WARN_ON(err))
-		return 0;
-
-	tsf = tsf_high;
-	tsf = (tsf << 32) | tsf_low;
-	return tsf;
-}
-
-static int ar9170_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
-			  struct ieee80211_vif *vif, struct ieee80211_sta *sta,
-			  struct ieee80211_key_conf *key)
-{
-	struct ar9170 *ar = hw->priv;
-	int err = 0, i;
-	u8 ktype;
-
-	if ((!ar->vif) || (ar->disable_offload))
-		return -EOPNOTSUPP;
-
-	switch (key->alg) {
-	case ALG_WEP:
-		if (key->keylen == LEN_WEP40)
-			ktype = AR9170_ENC_ALG_WEP64;
-		else
-			ktype = AR9170_ENC_ALG_WEP128;
-		break;
-	case ALG_TKIP:
-		ktype = AR9170_ENC_ALG_TKIP;
-		break;
-	case ALG_CCMP:
-		ktype = AR9170_ENC_ALG_AESCCMP;
-		break;
-	default:
-		return -EOPNOTSUPP;
-	}
-
-	mutex_lock(&ar->mutex);
-	if (cmd == SET_KEY) {
-		if (unlikely(!IS_STARTED(ar))) {
-			err = -EOPNOTSUPP;
-			goto out;
-		}
-
-		/* group keys need all-zeroes address */
-		if (!(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
-			sta = NULL;
-
-		if (key->flags & IEEE80211_KEY_FLAG_PAIRWISE) {
-			for (i = 0; i < 64; i++)
-				if (!(ar->usedkeys & BIT(i)))
-					break;
-			if (i == 64) {
-				ar->rx_software_decryption = true;
-				ar9170_set_operating_mode(ar);
-				err = -ENOSPC;
-				goto out;
-			}
-		} else {
-			i = 64 + key->keyidx;
-		}
-
-		key->hw_key_idx = i;
-
-		err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL, ktype, 0,
-					key->key, min_t(u8, 16, key->keylen));
-		if (err)
-			goto out;
-
-		if (key->alg == ALG_TKIP) {
-			err = ar9170_upload_key(ar, i, sta ? sta->addr : NULL,
-						ktype, 1, key->key + 16, 16);
-			if (err)
-				goto out;
-
-			/*
-			 * hardware is not capable generating the MMIC
-			 * for fragmented frames!
-			 */
-			key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
-		}
-
-		if (i < 64)
-			ar->usedkeys |= BIT(i);
-
-		key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
-	} else {
-		if (unlikely(!IS_STARTED(ar))) {
-			/* The device is gone... together with the key ;-) */
-			err = 0;
-			goto out;
-		}
-
-		err = ar9170_disable_key(ar, key->hw_key_idx);
-		if (err)
-			goto out;
-
-		if (key->hw_key_idx < 64) {
-			ar->usedkeys &= ~BIT(key->hw_key_idx);
-		} else {
-			err = ar9170_upload_key(ar, key->hw_key_idx, NULL,
-						AR9170_ENC_ALG_NONE, 0,
-						NULL, 0);
-			if (err)
-				goto out;
-
-			if (key->alg == ALG_TKIP) {
-				err = ar9170_upload_key(ar, key->hw_key_idx,
-							NULL,
-							AR9170_ENC_ALG_NONE, 1,
-							NULL, 0);
-				if (err)
-					goto out;
-			}
-
-		}
-	}
-
-	ar9170_regwrite_begin(ar);
-	ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_L, ar->usedkeys);
-	ar9170_regwrite(AR9170_MAC_REG_ROLL_CALL_TBL_H, ar->usedkeys >> 32);
-	ar9170_regwrite_finish();
-	err = ar9170_regwrite_result();
-
-out:
-	mutex_unlock(&ar->mutex);
-
-	return err;
-}
-
-static void ar9170_sta_notify(struct ieee80211_hw *hw,
-			      struct ieee80211_vif *vif,
-			      enum sta_notify_cmd cmd,
-			      struct ieee80211_sta *sta)
-{
-	struct ar9170 *ar = hw->priv;
-	struct ar9170_sta_info *info = (void *) sta->drv_priv;
-	struct sk_buff *skb;
-	unsigned int i;
-
-	switch (cmd) {
-	case STA_NOTIFY_ADD:
-		for (i = 0; i < ar->hw->queues; i++)
-			skb_queue_head_init(&info->tx_status[i]);
-		break;
-
-	case STA_NOTIFY_REMOVE:
-
-		/*
-		 * transfer all outstanding frames that need a tx_status
-		 * reports to the global tx_status queue
-		 */
-
-		for (i = 0; i < ar->hw->queues; i++) {
-			while ((skb = skb_dequeue(&info->tx_status[i]))) {
-#ifdef AR9170_QUEUE_DEBUG
-				printk(KERN_DEBUG "%s: queueing frame in "
-					  "global tx_status queue =>\n",
-				       wiphy_name(ar->hw->wiphy));
-
-				ar9170_print_txheader(ar, skb);
-#endif /* AR9170_QUEUE_DEBUG */
-				skb_queue_tail(&ar->global_tx_status, skb);
-			}
-		}
-		queue_delayed_work(ar->hw->workqueue, &ar->tx_status_janitor,
-				   msecs_to_jiffies(100));
-		break;
-
-	default:
-		break;
-	}
-}
-
-static int ar9170_get_stats(struct ieee80211_hw *hw,
-			    struct ieee80211_low_level_stats *stats)
-{
-	struct ar9170 *ar = hw->priv;
-	u32 val;
-	int err;
-
-	mutex_lock(&ar->mutex);
-	err = ar9170_read_reg(ar, AR9170_MAC_REG_TX_RETRY, &val);
-	ar->stats.dot11ACKFailureCount += val;
-
-	memcpy(stats, &ar->stats, sizeof(*stats));
-	mutex_unlock(&ar->mutex);
-
-	return 0;
-}
-
-static int ar9170_get_tx_stats(struct ieee80211_hw *hw,
-			       struct ieee80211_tx_queue_stats *tx_stats)
-{
-	struct ar9170 *ar = hw->priv;
-
-	spin_lock_bh(&ar->tx_stats_lock);
-	memcpy(tx_stats, ar->tx_stats, sizeof(tx_stats[0]) * hw->queues);
-	spin_unlock_bh(&ar->tx_stats_lock);
-
-	return 0;
-}
-
-static int ar9170_conf_tx(struct ieee80211_hw *hw, u16 queue,
-			  const struct ieee80211_tx_queue_params *param)
-{
-	struct ar9170 *ar = hw->priv;
-	int ret;
-
-	mutex_lock(&ar->mutex);
-	if ((param) && !(queue > ar->hw->queues)) {
-		memcpy(&ar->edcf[ar9170_qos_hwmap[queue]],
-		       param, sizeof(*param));
-
-		ret = ar9170_set_qos(ar);
-	} else
-		ret = -EINVAL;
-
-	mutex_unlock(&ar->mutex);
-	return ret;
-}
-
-static const struct ieee80211_ops ar9170_ops = {
-	.start			= ar9170_op_start,
-	.stop			= ar9170_op_stop,
-	.tx			= ar9170_op_tx,
-	.add_interface		= ar9170_op_add_interface,
-	.remove_interface	= ar9170_op_remove_interface,
-	.config			= ar9170_op_config,
-	.config_interface	= ar9170_op_config_interface,
-	.configure_filter	= ar9170_op_configure_filter,
-	.conf_tx		= ar9170_conf_tx,
-	.bss_info_changed	= ar9170_op_bss_info_changed,
-	.get_tsf		= ar9170_op_get_tsf,
-	.set_key		= ar9170_set_key,
-	.sta_notify		= ar9170_sta_notify,
-	.get_stats		= ar9170_get_stats,
-	.get_tx_stats		= ar9170_get_tx_stats,
-};
-
-void *ar9170_alloc(size_t priv_size)
-{
-	struct ieee80211_hw *hw;
-	struct ar9170 *ar;
-	int i;
-
-	hw = ieee80211_alloc_hw(priv_size, &ar9170_ops);
-	if (!hw)
-		return ERR_PTR(-ENOMEM);
-
-	ar = hw->priv;
-	ar->hw = hw;
-
-	mutex_init(&ar->mutex);
-	spin_lock_init(&ar->cmdlock);
-	spin_lock_init(&ar->tx_stats_lock);
-	skb_queue_head_init(&ar->global_tx_status);
-	skb_queue_head_init(&ar->global_tx_status_waste);
-	INIT_WORK(&ar->filter_config_work, ar9170_set_filters);
-	INIT_WORK(&ar->beacon_work, ar9170_new_beacon);
-	INIT_DELAYED_WORK(&ar->tx_status_janitor, ar9170_tx_status_janitor);
-
-	/* all hw supports 2.4 GHz, so set channel to 1 by default */
-	ar->channel = &ar9170_2ghz_chantable[0];
-
-	/* first part of wiphy init */
-	ar->hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
-					 BIT(NL80211_IFTYPE_WDS) |
-					 BIT(NL80211_IFTYPE_ADHOC);
-	ar->hw->flags |= IEEE80211_HW_RX_INCLUDES_FCS |
-			 IEEE80211_HW_HOST_BROADCAST_PS_BUFFERING |
-			 IEEE80211_HW_SIGNAL_DBM |
-			 IEEE80211_HW_NOISE_DBM;
-
-	ar->hw->queues = __AR9170_NUM_TXQ;
-	ar->hw->extra_tx_headroom = 8;
-	ar->hw->sta_data_size = sizeof(struct ar9170_sta_info);
-
-	ar->hw->max_rates = 1;
-	ar->hw->max_rate_tries = 3;
-
-	for (i = 0; i < ARRAY_SIZE(ar->noise); i++)
-		ar->noise[i] = -95; /* ATH_DEFAULT_NOISE_FLOOR */
-
-	return ar;
-}
-
-static int ar9170_read_eeprom(struct ar9170 *ar)
-{
-#define RW	8	/* number of words to read at once */
-#define RB	(sizeof(u32) * RW)
-	DECLARE_MAC_BUF(mbuf);
-	u8 *eeprom = (void *)&ar->eeprom;
-	u8 *addr = ar->eeprom.mac_address;
-	__le32 offsets[RW];
-	int i, j, err, bands = 0;
-
-	BUILD_BUG_ON(sizeof(ar->eeprom) & 3);
-
-	BUILD_BUG_ON(RB > AR9170_MAX_CMD_LEN - 4);
-#ifndef __CHECKER__
-	/* don't want to handle trailing remains */
-	BUILD_BUG_ON(sizeof(ar->eeprom) % RB);
-#endif
-
-	for (i = 0; i < sizeof(ar->eeprom)/RB; i++) {
-		for (j = 0; j < RW; j++)
-			offsets[j] = cpu_to_le32(AR9170_EEPROM_START +
-						 RB * i + 4 * j);
-
-		err = ar->exec_cmd(ar, AR9170_CMD_RREG,
-				   RB, (u8 *) &offsets,
-				   RB, eeprom + RB * i);
-		if (err)
-			return err;
-	}
-
-#undef RW
-#undef RB
-
-	if (ar->eeprom.length == cpu_to_le16(0xFFFF))
-		return -ENODATA;
-
-	if (ar->eeprom.operating_flags & AR9170_OPFLAG_2GHZ) {
-		ar->hw->wiphy->bands[IEEE80211_BAND_2GHZ] = &ar9170_band_2GHz;
-		bands++;
-	}
-	if (ar->eeprom.operating_flags & AR9170_OPFLAG_5GHZ) {
-		ar->hw->wiphy->bands[IEEE80211_BAND_5GHZ] = &ar9170_band_5GHz;
-		bands++;
-	}
-	/*
-	 * I measured this, a bandswitch takes roughly
-	 * 135 ms and a frequency switch about 80.
-	 *
-	 * FIXME: measure these values again once EEPROM settings
-	 *	  are used, that will influence them!
-	 */
-	if (bands == 2)
-		ar->hw->channel_change_time = 135 * 1000;
-	else
-		ar->hw->channel_change_time = 80 * 1000;
-
-	ar->regulatory.current_rd = le16_to_cpu(ar->eeprom.reg_domain[0]);
-	ar->regulatory.current_rd_ext = le16_to_cpu(ar->eeprom.reg_domain[1]);
-
-	/* second part of wiphy init */
-	SET_IEEE80211_PERM_ADDR(ar->hw, addr);
-
-	return bands ? 0 : -EINVAL;
-}
-
-static int ar9170_reg_notifier(struct wiphy *wiphy,
-			struct regulatory_request *request)
-{
-	struct ieee80211_hw *hw = wiphy_to_ieee80211_hw(wiphy);
-	struct ar9170 *ar = hw->priv;
-
-	return ath_reg_notifier_apply(wiphy, request, &ar->regulatory);
-}
-
-int ar9170_register(struct ar9170 *ar, struct device *pdev)
-{
-	int err;
-
-	/* try to read EEPROM, init MAC addr */
-	err = ar9170_read_eeprom(ar);
-	if (err)
-		goto err_out;
-
-	err = ath_regd_init(&ar->regulatory, ar->hw->wiphy,
-			    ar9170_reg_notifier);
-
-	err = ieee80211_register_hw(ar->hw);
-	if (err)
-		goto err_out;
-
-	if (!ath_is_world_regd(&ar->regulatory))
-		regulatory_hint(ar->hw->wiphy, ar->regulatory.alpha2);
-
-	err = ar9170_init_leds(ar);
-	if (err)
-		goto err_unreg;
-
-#ifdef CONFIG_AR9170_LEDS
-	err = ar9170_register_leds(ar);
-	if (err)
-		goto err_unreg;
-#endif /* CONFIG_AR9170_LEDS */
-
-	dev_info(pdev, "Atheros AR9170 is registered as '%s'\n",
-		 wiphy_name(ar->hw->wiphy));
-
-	return err;
-
-err_unreg:
-	ieee80211_unregister_hw(ar->hw);
-
-err_out:
-	return err;
-}
-
-void ar9170_unregister(struct ar9170 *ar)
-{
-#ifdef CONFIG_AR9170_LEDS
-	ar9170_unregister_leds(ar);
-#endif /* CONFIG_AR9170_LEDS */
-
-	ieee80211_unregister_hw(ar->hw);
-	mutex_destroy(&ar->mutex);
-}