Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git

ath.git patches for 4.11. Major changes:

ath9k

* cleanup eeprom endian handling
* add airtime fairness scheduling

ath10k

* fix issues for new QCA9377 firmware version
* support dev_coredump() for firmware crash dump
* enable channel 169 on 5 GHz band

drivers/net/wireless/ath/ath10k/core.c

@@ -694,8 +694,11 @@ static int ath10k_core_get_board_id_from_otp(struct ath10k *ar)
 		   "boot get otp board id result 0x%08x board_id %d chip_id %d\n",
 		   result, board_id, chip_id);
 
-	if ((result & ATH10K_BMI_BOARD_ID_STATUS_MASK) != 0)
+	if ((result & ATH10K_BMI_BOARD_ID_STATUS_MASK) != 0 ||
+	    (board_id == 0)) {
+		ath10k_warn(ar, "board id is not exist in otp, ignore it\n");
 		return -EOPNOTSUPP;
+	}
 
 	ar->id.bmi_ids_valid = true;
 	ar->id.bmi_board_id = board_id;
@@ -1510,6 +1513,7 @@ static int ath10k_init_hw_params(struct ath10k *ar)
 static void ath10k_core_restart(struct work_struct *work)
 {
 	struct ath10k *ar = container_of(work, struct ath10k, restart_work);
+	int ret;
 
 	set_bit(ATH10K_FLAG_CRASH_FLUSH, &ar->dev_flags);
 
@@ -1561,6 +1565,11 @@ static void ath10k_core_restart(struct work_struct *work)
 	}
 
 	mutex_unlock(&ar->conf_mutex);
+
+	ret = ath10k_debug_fw_devcoredump(ar);
+	if (ret)
+		ath10k_warn(ar, "failed to send firmware crash dump via devcoredump: %d",
+			    ret);
 }
 
 static void ath10k_core_set_coverage_class_work(struct work_struct *work)

drivers/net/wireless/ath/ath10k/core.h

@@ -46,7 +46,7 @@
 #define WMI_READY_TIMEOUT (5 * HZ)
 #define ATH10K_FLUSH_TIMEOUT_HZ (5 * HZ)
 #define ATH10K_CONNECTION_LOSS_HZ (3 * HZ)
-#define ATH10K_NUM_CHANS 39
+#define ATH10K_NUM_CHANS 40
 
 /* Antenna noise floor */
 #define ATH10K_DEFAULT_NOISE_FLOOR -95

drivers/net/wireless/ath/ath10k/debug.c

@@ -21,6 +21,7 @@
 #include <linux/utsname.h>
 #include <linux/crc32.h>
 #include <linux/firmware.h>
+#include <linux/devcoredump.h>
 
 #include "core.h"
 #include "debug.h"
@@ -721,7 +722,8 @@ ath10k_debug_get_new_fw_crash_data(struct ath10k *ar)
 }
 EXPORT_SYMBOL(ath10k_debug_get_new_fw_crash_data);
 
-static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar)
+static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar,
+							    bool mark_read)
 {
 	struct ath10k_fw_crash_data *crash_data = ar->debug.fw_crash_data;
 	struct ath10k_dump_file_data *dump_data;
@@ -790,19 +792,54 @@ static struct ath10k_dump_file_data *ath10k_build_dump_file(struct ath10k *ar)
 	       sizeof(crash_data->registers));
 	sofar += sizeof(*dump_tlv) + sizeof(crash_data->registers);
 
-	ar->debug.fw_crash_data->crashed_since_read = false;
+	ar->debug.fw_crash_data->crashed_since_read = !mark_read;
 
 	spin_unlock_bh(&ar->data_lock);
 
 	return dump_data;
 }
 
+int ath10k_debug_fw_devcoredump(struct ath10k *ar)
+{
+	struct ath10k_dump_file_data *dump;
+	void *dump_ptr;
+	u32 dump_len;
+
+	/* To keep the dump file available also for debugfs don't mark the
+	 * file read, only debugfs should do that.
+	 */
+	dump = ath10k_build_dump_file(ar, false);
+	if (!dump) {
+		ath10k_warn(ar, "no crash dump data found for devcoredump");
+		return -ENODATA;
+	}
+
+	/* Make a copy of the dump file for dev_coredumpv() as during the
+	 * transition period we need to own the original file. Once
+	 * fw_crash_dump debugfs file is removed no need to have a copy
+	 * anymore.
+	 */
+	dump_len = le32_to_cpu(dump->len);
+	dump_ptr = vzalloc(dump_len);
+
+	if (!dump_ptr)
+		return -ENOMEM;
+
+	memcpy(dump_ptr, dump, dump_len);
+
+	dev_coredumpv(ar->dev, dump_ptr, dump_len, GFP_KERNEL);
+
+	return 0;
+}
+
 static int ath10k_fw_crash_dump_open(struct inode *inode, struct file *file)
 {
 	struct ath10k *ar = inode->i_private;
 	struct ath10k_dump_file_data *dump;
 
-	dump = ath10k_build_dump_file(ar);
+	ath10k_warn(ar, "fw_crash_dump debugfs file is deprecated, please use /sys/class/devcoredump instead.");
+
+	dump = ath10k_build_dump_file(ar, true);
 	if (!dump)
 		return -ENODATA;
 

drivers/net/wireless/ath/ath10k/debug.h

@@ -84,6 +84,9 @@ struct ath10k_fw_crash_data *
 ath10k_debug_get_new_fw_crash_data(struct ath10k *ar);
 
 void ath10k_debug_dbglog_add(struct ath10k *ar, u8 *buffer, int len);
+
+int ath10k_debug_fw_devcoredump(struct ath10k *ar);
+
 #define ATH10K_DFS_STAT_INC(ar, c) (ar->debug.dfs_stats.c++)
 
 void ath10k_debug_get_et_strings(struct ieee80211_hw *hw,
@@ -166,6 +169,11 @@ static inline u32 ath10k_debug_get_fw_dbglog_level(struct ath10k *ar)
 	return 0;
 }
 
+static inline int ath10k_debug_fw_devcoredump(struct ath10k *ar)
+{
+	return 0;
+}
+
 #define ATH10K_DFS_STAT_INC(ar, c) do { } while (0)
 
 #define ath10k_debug_get_et_strings NULL

drivers/net/wireless/ath/ath10k/htt_tx.c

@@ -239,6 +239,7 @@ static void ath10k_htt_tx_free_cont_txbuf(struct ath10k_htt *htt)
 
 	size = htt->max_num_pending_tx * sizeof(struct ath10k_htt_txbuf);
 	dma_free_coherent(ar->dev, size, htt->txbuf.vaddr, htt->txbuf.paddr);
+	htt->txbuf.vaddr = NULL;
 }
 
 static int ath10k_htt_tx_alloc_cont_txbuf(struct ath10k_htt *htt)
@@ -268,6 +269,7 @@ static void ath10k_htt_tx_free_cont_frag_desc(struct ath10k_htt *htt)
 			  size,
 			  htt->frag_desc.vaddr,
 			  htt->frag_desc.paddr);
+	htt->frag_desc.vaddr = NULL;
 }
 
 static int ath10k_htt_tx_alloc_cont_frag_desc(struct ath10k_htt *htt)

drivers/net/wireless/ath/ath10k/hw.h

@@ -512,7 +512,7 @@ ath10k_rx_desc_get_l3_pad_bytes(struct ath10k_hw_params *hw,
 /* Target specific defines for WMI-TLV firmware */
 #define TARGET_TLV_NUM_VDEVS			4
 #define TARGET_TLV_NUM_STATIONS			32
-#define TARGET_TLV_NUM_PEERS			35
+#define TARGET_TLV_NUM_PEERS			33
 #define TARGET_TLV_NUM_TDLS_VDEVS		1
 #define TARGET_TLV_NUM_TIDS			((TARGET_TLV_NUM_PEERS) * 2)
 #define TARGET_TLV_NUM_MSDU_DESC		(1024 + 32)

drivers/net/wireless/ath/ath10k/mac.c

@@ -1227,6 +1227,36 @@ static int ath10k_monitor_recalc(struct ath10k *ar)
 		return ath10k_monitor_stop(ar);
 }
 
+static bool ath10k_mac_can_set_cts_prot(struct ath10k_vif *arvif)
+{
+	struct ath10k *ar = arvif->ar;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	if (!arvif->is_started) {
+		ath10k_dbg(ar, ATH10K_DBG_MAC, "defer cts setup, vdev is not ready yet\n");
+		return false;
+	}
+
+	return true;
+}
+
+static int ath10k_mac_set_cts_prot(struct ath10k_vif *arvif)
+{
+	struct ath10k *ar = arvif->ar;
+	u32 vdev_param;
+
+	lockdep_assert_held(&ar->conf_mutex);
+
+	vdev_param = ar->wmi.vdev_param->protection_mode;
+
+	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_protection %d\n",
+		   arvif->vdev_id, arvif->use_cts_prot);
+
+	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
+					 arvif->use_cts_prot ? 1 : 0);
+}
+
 static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
 {
 	struct ath10k *ar = arvif->ar;
@@ -1245,6 +1275,9 @@ static int ath10k_recalc_rtscts_prot(struct ath10k_vif *arvif)
 		rts_cts |= SM(WMI_RTSCTS_FOR_SECOND_RATESERIES,
 			      WMI_RTSCTS_PROFILE);
 
+	ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d recalc rts/cts prot %d\n",
+		   arvif->vdev_id, rts_cts);
+
 	return ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
 					 rts_cts);
 }
@@ -3495,7 +3528,6 @@ static int ath10k_mac_tx_submit(struct ath10k *ar,
  */
 static int ath10k_mac_tx(struct ath10k *ar,
 			 struct ieee80211_vif *vif,
-			 struct ieee80211_sta *sta,
 			 enum ath10k_hw_txrx_mode txmode,
 			 enum ath10k_mac_tx_path txpath,
 			 struct sk_buff *skb)
@@ -3637,7 +3669,7 @@ void ath10k_offchan_tx_work(struct work_struct *work)
 		txmode = ath10k_mac_tx_h_get_txmode(ar, vif, sta, skb);
 		txpath = ath10k_mac_tx_h_get_txpath(ar, skb, txmode);
 
-		ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
+		ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
 		if (ret) {
 			ath10k_warn(ar, "failed to transmit offchannel frame: %d\n",
 				    ret);
@@ -3824,7 +3856,7 @@ int ath10k_mac_tx_push_txq(struct ieee80211_hw *hw,
 		spin_unlock_bh(&ar->htt.tx_lock);
 	}
 
-	ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
+	ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
 	if (unlikely(ret)) {
 		ath10k_warn(ar, "failed to push frame: %d\n", ret);
 
@@ -4105,7 +4137,7 @@ static void ath10k_mac_op_tx(struct ieee80211_hw *hw,
 		spin_unlock_bh(&ar->htt.tx_lock);
 	}
 
-	ret = ath10k_mac_tx(ar, vif, sta, txmode, txpath, skb);
+	ret = ath10k_mac_tx(ar, vif, txmode, txpath, skb);
 	if (ret) {
 		ath10k_warn(ar, "failed to transmit frame: %d\n", ret);
 		if (is_htt) {
@@ -4669,7 +4701,8 @@ static int ath10k_mac_txpower_recalc(struct ath10k *ar)
 	lockdep_assert_held(&ar->conf_mutex);
 
 	list_for_each_entry(arvif, &ar->arvifs, list) {
-		WARN_ON(arvif->txpower < 0);
+		if (arvif->txpower <= 0)
+			continue;
 
 		if (txpower == -1)
 			txpower = arvif->txpower;
@@ -4677,8 +4710,8 @@ static int ath10k_mac_txpower_recalc(struct ath10k *ar)
 			txpower = min(txpower, arvif->txpower);
 	}
 
-	if (WARN_ON(txpower == -1))
-		return -EINVAL;
+	if (txpower == -1)
+		return 0;
 
 	ret = ath10k_mac_txpower_setup(ar, txpower);
 	if (ret) {
@@ -5194,6 +5227,10 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw,
 			ath10k_warn(ar, "failed to recalc monitor: %d\n", ret);
 	}
 
+	ret = ath10k_mac_txpower_recalc(ar);
+	if (ret)
+		ath10k_warn(ar, "failed to recalc tx power: %d\n", ret);
+
 	spin_lock_bh(&ar->htt.tx_lock);
 	ath10k_mac_vif_tx_unlock_all(arvif);
 	spin_unlock_bh(&ar->htt.tx_lock);
@@ -5328,20 +5365,18 @@ static void ath10k_bss_info_changed(struct ieee80211_hw *hw,
 
 	if (changed & BSS_CHANGED_ERP_CTS_PROT) {
 		arvif->use_cts_prot = info->use_cts_prot;
-		ath10k_dbg(ar, ATH10K_DBG_MAC, "mac vdev %d cts_prot %d\n",
-			   arvif->vdev_id, info->use_cts_prot);
 
 		ret = ath10k_recalc_rtscts_prot(arvif);
 		if (ret)
 			ath10k_warn(ar, "failed to recalculate rts/cts prot for vdev %d: %d\n",
 				    arvif->vdev_id, ret);
 
-		vdev_param = ar->wmi.vdev_param->protection_mode;
-		ret = ath10k_wmi_vdev_set_param(ar, arvif->vdev_id, vdev_param,
-						info->use_cts_prot ? 1 : 0);
+		if (ath10k_mac_can_set_cts_prot(arvif)) {
+			ret = ath10k_mac_set_cts_prot(arvif);
 			if (ret)
-			ath10k_warn(ar, "failed to set protection mode %d on vdev %i: %d\n",
-				    info->use_cts_prot, arvif->vdev_id, ret);
+				ath10k_warn(ar, "failed to set cts protection for vdev %d: %d\n",
+					    arvif->vdev_id, ret);
+		}
 	}
 
 	if (changed & BSS_CHANGED_ERP_SLOT) {
@@ -7364,6 +7399,13 @@ ath10k_mac_op_assign_vif_chanctx(struct ieee80211_hw *hw,
 		arvif->is_up = true;
 	}
 
+	if (ath10k_mac_can_set_cts_prot(arvif)) {
+		ret = ath10k_mac_set_cts_prot(arvif);
+		if (ret)
+			ath10k_warn(ar, "failed to set cts protection for vdev %d: %d\n",
+				    arvif->vdev_id, ret);
+	}
+
 	mutex_unlock(&ar->conf_mutex);
 	return 0;
 
@@ -7548,6 +7590,7 @@ static const struct ieee80211_channel ath10k_5ghz_channels[] = {
 	CHAN5G(157, 5785, 0),
 	CHAN5G(161, 5805, 0),
 	CHAN5G(165, 5825, 0),
+	CHAN5G(169, 5845, 0),
 };
 
 struct ath10k *ath10k_mac_create(size_t priv_size)

drivers/net/wireless/ath/ath10k/pci.c

@@ -1973,7 +1973,7 @@ static int ath10k_pci_get_num_banks(struct ath10k *ar)
 		}
 		break;
 	case QCA9377_1_0_DEVICE_ID:
-		return 2;
+		return 4;
 	}
 
 	ath10k_warn(ar, "unknown number of banks, assuming 1\n");
@@ -3132,7 +3132,7 @@ int ath10k_pci_setup_resource(struct ath10k *ar)
 	setup_timer(&ar_pci->rx_post_retry, ath10k_pci_rx_replenish_retry,
 		    (unsigned long)ar);
 
-	if (QCA_REV_6174(ar))
+	if (QCA_REV_6174(ar) || QCA_REV_9377(ar))
 		ath10k_pci_override_ce_config(ar);
 
 	ret = ath10k_pci_alloc_pipes(ar);

drivers/net/wireless/ath/ath10k/wmi-tlv.c

@@ -1105,8 +1105,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
 		struct ath10k_fw_stats_pdev *dst;
 
 		src = data;
-		if (data_len < sizeof(*src))
+		if (data_len < sizeof(*src)) {
+			kfree(tb);
 			return -EPROTO;
+		}
 
 		data += sizeof(*src);
 		data_len -= sizeof(*src);
@@ -1126,8 +1128,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
 		struct ath10k_fw_stats_vdev *dst;
 
 		src = data;
-		if (data_len < sizeof(*src))
+		if (data_len < sizeof(*src)) {
+			kfree(tb);
 			return -EPROTO;
+		}
 
 		data += sizeof(*src);
 		data_len -= sizeof(*src);
@@ -1145,8 +1149,10 @@ static int ath10k_wmi_tlv_op_pull_fw_stats(struct ath10k *ar,
 		struct ath10k_fw_stats_peer *dst;
 
 		src = data;
-		if (data_len < sizeof(*src))
+		if (data_len < sizeof(*src)) {
+			kfree(tb);
 			return -EPROTO;
+		}
 
 		data += sizeof(*src);
 		data_len -= sizeof(*src);

drivers/net/wireless/ath/ath9k/ar5008_phy.c

@@ -524,7 +524,7 @@ static bool ar5008_hw_set_rf_regs(struct ath_hw *ah,
 		return true;
 
 	/* Setup rf parameters */
-	eepMinorRev = ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV);
+	eepMinorRev = ah->eep_ops->get_eeprom_rev(ah);
 
 	for (i = 0; i < ah->iniBank6.ia_rows; i++)
 		ah->analogBank6Data[i] = INI_RA(&ah->iniBank6, i, modesIndex);

drivers/net/wireless/ath/ath9k/ar9002_hw.c

@@ -108,8 +108,7 @@ static void ar9280_20_hw_init_rxgain_ini(struct ath_hw *ah)
 {
 	u32 rxgain_type;
 
-	if (ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) >=
-	    AR5416_EEP_MINOR_VER_17) {
+	if (ah->eep_ops->get_eeprom_rev(ah) >= AR5416_EEP_MINOR_VER_17) {
 		rxgain_type = ah->eep_ops->get_eeprom(ah, EEP_RXGAIN_TYPE);
 
 		if (rxgain_type == AR5416_EEP_RXGAIN_13DB_BACKOFF)
@@ -129,8 +128,7 @@ static void ar9280_20_hw_init_rxgain_ini(struct ath_hw *ah)
 
 static void ar9280_20_hw_init_txgain_ini(struct ath_hw *ah, u32 txgain_type)
 {
-	if (ah->eep_ops->get_eeprom(ah, EEP_MINOR_REV) >=
-	    AR5416_EEP_MINOR_VER_19) {
+	if (ah->eep_ops->get_eeprom_rev(ah) >= AR5416_EEP_MINOR_VER_19) {
 		if (txgain_type == AR5416_EEP_TXGAIN_HIGH_POWER)
 			INIT_INI_ARRAY(&ah->iniModesTxGain,
 				       ar9280Modes_high_power_tx_gain_9280_2);

drivers/net/wireless/ath/ath9k/ar9003_eeprom.c

@@ -53,7 +53,7 @@ static const struct ar9300_eeprom ar9300_default = {
 		.txrxMask =  0x77, /* 4 bits tx and 4 bits rx */
 		.opCapFlags = {
 			.opFlags = AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A,
-			.eepMisc = 0,
+			.eepMisc = AR9300_EEPMISC_LITTLE_ENDIAN,
 		},
 		.rfSilent = 0,
 		.blueToothOptions = 0,
@@ -631,7 +631,7 @@ static const struct ar9300_eeprom ar9300_x113 = {
 		.txrxMask =  0x77, /* 4 bits tx and 4 bits rx */
 		.opCapFlags = {
 			.opFlags = AR5416_OPFLAGS_11A,
-			.eepMisc = 0,
+			.eepMisc = AR9300_EEPMISC_LITTLE_ENDIAN,
 		},
 		.rfSilent = 0,
 		.blueToothOptions = 0,
@@ -1210,7 +1210,7 @@ static const struct ar9300_eeprom ar9300_h112 = {
 		.txrxMask =  0x77, /* 4 bits tx and 4 bits rx */
 		.opCapFlags = {
 			.opFlags = AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A,
-			.eepMisc = 0,
+			.eepMisc = AR9300_EEPMISC_LITTLE_ENDIAN,
 		},
 		.rfSilent = 0,
 		.blueToothOptions = 0,
@@ -1789,7 +1789,7 @@ static const struct ar9300_eeprom ar9300_x112 = {
 		.txrxMask =  0x77, /* 4 bits tx and 4 bits rx */
 		.opCapFlags = {
 			.opFlags = AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A,
-			.eepMisc = 0,
+			.eepMisc = AR9300_EEPMISC_LITTLE_ENDIAN,
 		},
 		.rfSilent = 0,
 		.blueToothOptions = 0,
@@ -2367,7 +2367,7 @@ static const struct ar9300_eeprom ar9300_h116 = {
 		.txrxMask =  0x33, /* 4 bits tx and 4 bits rx */
 		.opCapFlags = {
 			.opFlags = AR5416_OPFLAGS_11G | AR5416_OPFLAGS_11A,
-			.eepMisc = 0,
+			.eepMisc = AR9300_EEPMISC_LITTLE_ENDIAN,
 		},
 		.rfSilent = 0,
 		.blueToothOptions = 0,
@@ -3468,7 +3468,8 @@ static u32 ath9k_hw_ar9003_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr,
 					AR5416_OPFLAGS_N_5G_HT20));
 	PR_EEP("Disable 5Ghz HT40", !!(pBase->opCapFlags.opFlags &
 					AR5416_OPFLAGS_N_5G_HT40));
-	PR_EEP("Big Endian", !!(pBase->opCapFlags.eepMisc & 0x01));
+	PR_EEP("Big Endian", !!(pBase->opCapFlags.eepMisc &
+				AR5416_EEPMISC_BIG_ENDIAN));
 	PR_EEP("RF Silent", pBase->rfSilent);
 	PR_EEP("BT option", pBase->blueToothOptions);
 	PR_EEP("Device Cap", pBase->deviceCap);
@@ -5497,6 +5498,11 @@ unsigned int ar9003_get_paprd_scale_factor(struct ath_hw *ah,
 	}
 }
 
+static u8 ar9003_get_eepmisc(struct ath_hw *ah)
+{
+	return ah->eeprom.map4k.baseEepHeader.eepMisc;
+}
+
 const struct eeprom_ops eep_ar9300_ops = {
 	.check_eeprom = ath9k_hw_ar9300_check_eeprom,
 	.get_eeprom = ath9k_hw_ar9300_get_eeprom,
@@ -5507,5 +5513,6 @@ const struct eeprom_ops eep_ar9300_ops = {
 	.set_board_values = ath9k_hw_ar9300_set_board_values,
 	.set_addac = ath9k_hw_ar9300_set_addac,
 	.set_txpower = ath9k_hw_ar9300_set_txpower,
-	.get_spur_channel = ath9k_hw_ar9300_get_spur_channel
+	.get_spur_channel = ath9k_hw_ar9300_get_spur_channel,
+	.get_eepmisc = ar9003_get_eepmisc
 };

drivers/net/wireless/ath/ath9k/ar9003_eeprom.h

@@ -38,7 +38,6 @@
 #define AR9300_NUM_CTLS_2G           12
 #define AR9300_NUM_BAND_EDGES_5G     8
 #define AR9300_NUM_BAND_EDGES_2G     4
-#define AR9300_EEPMISC_BIG_ENDIAN    0x01
 #define AR9300_EEPMISC_WOW           0x02
 #define AR9300_CUSTOMER_DATA_SIZE    20
 
@@ -70,6 +69,9 @@
 #define AR9300_BASE_ADDR 0x3ff
 #define AR9300_BASE_ADDR_512 0x1ff
 
+/* AR5416_EEPMISC_BIG_ENDIAN not set indicates little endian */
+#define AR9300_EEPMISC_LITTLE_ENDIAN 0
+
 #define AR9300_OTP_BASE \
 		((AR_SREV_9340(ah) || AR_SREV_9550(ah)) ? 0x30000 : 0x14000)
 #define AR9300_OTP_STATUS \

drivers/net/wireless/ath/ath9k/ath9k.h

@@ -112,6 +112,8 @@ int ath_descdma_setup(struct ath_softc *sc, struct ath_descdma *dd,
 #define ATH_TXFIFO_DEPTH           8
 #define ATH_TX_ERROR               0x01
 
+#define ATH_AIRTIME_QUANTUM        300 /* usec */
+
 /* Stop tx traffic 1ms before the GO goes away */
 #define ATH_P2P_PS_STOP_TIME       1000
 
@@ -247,6 +249,9 @@ struct ath_atx_tid {
 	bool has_queued;
 };
 
+void __ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid);
+void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid);
+
 struct ath_node {
 	struct ath_softc *sc;
 	struct ieee80211_sta *sta; /* station struct we're part of */
@@ -258,9 +263,12 @@ struct ath_node {
 
 	bool sleeping;
 	bool no_ps_filter;
+	s64 airtime_deficit[IEEE80211_NUM_ACS];
+	u32 airtime_rx_start;
 
 #ifdef CONFIG_ATH9K_STATION_STATISTICS
 	struct ath_rx_rate_stats rx_rate_stats;
+	struct ath_airtime_stats airtime_stats;
 #endif
 	u8 key_idx[4];
 
@@ -317,10 +325,16 @@ struct ath_rx {
 /* Channel Context */
 /*******************/
 
+struct ath_acq {
+	struct list_head acq_new;
+	struct list_head acq_old;
+	spinlock_t lock;
+};
+
 struct ath_chanctx {
 	struct cfg80211_chan_def chandef;
 	struct list_head vifs;
-	struct list_head acq[IEEE80211_NUM_ACS];
+	struct ath_acq acq[IEEE80211_NUM_ACS];
 	int hw_queue_base;
 
 	/* do not dereference, use for comparison only */
@@ -555,6 +569,15 @@ static inline void ath_chanctx_check_active(struct ath_softc *sc,
 
 #endif /* CONFIG_ATH9K_CHANNEL_CONTEXT */
 
+static inline void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq)
+{
+	spin_lock_bh(&txq->axq_lock);
+}
+static inline void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq)
+{
+	spin_unlock_bh(&txq->axq_lock);
+}
+
 void ath_startrecv(struct ath_softc *sc);
 bool ath_stoprecv(struct ath_softc *sc);
 u32 ath_calcrxfilter(struct ath_softc *sc);
@@ -562,8 +585,6 @@ int ath_rx_init(struct ath_softc *sc, int nbufs);
 void ath_rx_cleanup(struct ath_softc *sc);
 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp);
 struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype);
-void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq);
-void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq);
 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq);
 void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq);
 bool ath_drain_all_txq(struct ath_softc *sc);
@@ -575,6 +596,8 @@ void ath_txq_schedule_all(struct ath_softc *sc);
 int ath_tx_init(struct ath_softc *sc, int nbufs);
 int ath_txq_update(struct ath_softc *sc, int qnum,
 		   struct ath9k_tx_queue_info *q);
+u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen,
+		     int width, int half_gi, bool shortPreamble);
 void ath_update_max_aggr_framelen(struct ath_softc *sc, int queue, int txop);
 void ath_assign_seq(struct ath_common *common, struct sk_buff *skb);
 int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
@@ -963,6 +986,11 @@ void ath_ant_comb_scan(struct ath_softc *sc, struct ath_rx_status *rs);
 
 #define ATH9K_NUM_CHANCTX  2 /* supports 2 operating channels */
 
+#define AIRTIME_USE_TX		BIT(0)
+#define AIRTIME_USE_RX		BIT(1)
+#define AIRTIME_USE_NEW_QUEUES	BIT(2)
+#define AIRTIME_ACTIVE(flags) (!!(flags & (AIRTIME_USE_TX|AIRTIME_USE_RX)))
+
 struct ath_softc {
 	struct ieee80211_hw *hw;
 	struct device *dev;
@@ -1005,6 +1033,8 @@ struct ath_softc {
 	short nbcnvifs;
 	unsigned long ps_usecount;
 
+	u16 airtime_flags; /* AIRTIME_* */
+
 	struct ath_rx rx;
 	struct ath_tx tx;
 	struct ath_beacon beacon;

drivers/net/wireless/ath/ath9k/channel.c

@@ -118,8 +118,11 @@ void ath_chanctx_init(struct ath_softc *sc)
 		INIT_LIST_HEAD(&ctx->vifs);
 		ctx->txpower = ATH_TXPOWER_MAX;
 		ctx->flush_timeout = HZ / 5; /* 200ms */
-		for (j = 0; j < ARRAY_SIZE(ctx->acq); j++)
-			INIT_LIST_HEAD(&ctx->acq[j]);
+		for (j = 0; j < ARRAY_SIZE(ctx->acq); j++) {
+			INIT_LIST_HEAD(&ctx->acq[j].acq_new);
+			INIT_LIST_HEAD(&ctx->acq[j].acq_old);
+			spin_lock_init(&ctx->acq[j].lock);
+		}
 	}
 }
 
@@ -1345,8 +1348,11 @@ void ath9k_offchannel_init(struct ath_softc *sc)
 	ctx->txpower = ATH_TXPOWER_MAX;
 	cfg80211_chandef_create(&ctx->chandef, chan, NL80211_CHAN_HT20);
 
-	for (i = 0; i < ARRAY_SIZE(ctx->acq); i++)
-		INIT_LIST_HEAD(&ctx->acq[i]);
+	for (i = 0; i < ARRAY_SIZE(ctx->acq); i++) {
+		INIT_LIST_HEAD(&ctx->acq[i].acq_new);
+		INIT_LIST_HEAD(&ctx->acq[i].acq_old);
+		spin_lock_init(&ctx->acq[i].lock);
+	}
 
 	sc->offchannel.chan.offchannel = true;
 }

drivers/net/wireless/ath/ath9k/debug.c

@@ -1399,5 +1399,8 @@ int ath9k_init_debug(struct ath_hw *ah)
 	debugfs_create_file("tpc", S_IRUSR | S_IWUSR,
 			    sc->debug.debugfs_phy, sc, &fops_tpc);
 
+	debugfs_create_u16("airtime_flags", S_IRUSR | S_IWUSR,
+			   sc->debug.debugfs_phy, &sc->airtime_flags);
+
 	return 0;
 }

drivers/net/wireless/ath/ath9k/debug.h

@@ -221,6 +221,11 @@ struct ath_rx_rate_stats {
 	} cck_stats[4];
 };
 
+struct ath_airtime_stats {
+	u32 rx_airtime;
+	u32 tx_airtime;
+};
+
 #define ANT_MAIN 0
 #define ANT_ALT  1
 
@@ -314,12 +319,20 @@ ath9k_debug_sync_cause(struct ath_softc *sc, u32 sync_cause)
 void ath_debug_rate_stats(struct ath_softc *sc,
 			  struct ath_rx_status *rs,
 			  struct sk_buff *skb);
+void ath_debug_airtime(struct ath_softc *sc,
+		       struct ath_node *an,
+		       u32 rx, u32 tx);
 #else
 static inline void ath_debug_rate_stats(struct ath_softc *sc,
 					struct ath_rx_status *rs,
 					struct sk_buff *skb)
 {
 }
+static inline void ath_debug_airtime(struct ath_softc *sc,
+			      struct ath_node *an,
+			      u32 rx, u32 tx)
+{
+}
 #endif /* CONFIG_ATH9K_STATION_STATISTICS */
 
 #endif /* DEBUG_H */

drivers/net/wireless/ath/ath9k/debug_sta.c

@@ -242,6 +242,59 @@ static const struct file_operations fops_node_recv = {
 	.llseek = default_llseek,
 };
 
+void ath_debug_airtime(struct ath_softc *sc,
+		struct ath_node *an,
+		u32 rx,
+		u32 tx)
+{
+	struct ath_airtime_stats *astats = &an->airtime_stats;
+
+	astats->rx_airtime += rx;
+	astats->tx_airtime += tx;
+}
+
+static ssize_t read_airtime(struct file *file, char __user *user_buf,
+			size_t count, loff_t *ppos)
+{
+	struct ath_node *an = file->private_data;
+	struct ath_airtime_stats *astats;
+	static const char *qname[4] = {
+		"VO", "VI", "BE", "BK"
+	};
+	u32 len = 0, size = 256;
+	char *buf;
+	size_t retval;
+	int i;
+
+	buf = kzalloc(size, GFP_KERNEL);
+	if (buf == NULL)
+		return -ENOMEM;
+
+	astats = &an->airtime_stats;
+
+	len += scnprintf(buf + len, size - len, "RX: %u us\n", astats->rx_airtime);
+	len += scnprintf(buf + len, size - len, "TX: %u us\n", astats->tx_airtime);
+	len += scnprintf(buf + len, size - len, "Deficit: ");
+	for (i = 0; i < 4; i++)
+		len += scnprintf(buf+len, size - len, "%s: %lld us ", qname[i], an->airtime_deficit[i]);
+	if (len < size)
+		buf[len++] = '\n';
+
+	retval = simple_read_from_buffer(user_buf, count, ppos, buf, len);
+	kfree(buf);
+
+	return retval;
+}
+
+
+static const struct file_operations fops_airtime = {
+	.read = read_airtime,
+	.open = simple_open,
+	.owner = THIS_MODULE,
+	.llseek = default_llseek,
+};
+
+
 void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,
 			   struct ieee80211_vif *vif,
 			   struct ieee80211_sta *sta,
@@ -251,4 +304,5 @@ void ath9k_sta_add_debugfs(struct ieee80211_hw *hw,
 
 	debugfs_create_file("node_aggr", S_IRUGO, dir, an, &fops_node_aggr);
 	debugfs_create_file("node_recv", S_IRUGO, dir, an, &fops_node_recv);
+	debugfs_create_file("airtime", S_IRUGO, dir, an, &fops_airtime);
 }

drivers/net/wireless/ath/ath9k/eeprom.c

@@ -160,6 +160,7 @@ int ath9k_hw_nvram_swap_data(struct ath_hw *ah, bool *swap_needed, int size)
 	u16 magic;
 	u16 *eepdata;
 	int i;
+	bool needs_byteswap = false;
 	struct ath_common *common = ath9k_hw_common(ah);
 
 	if (!ath9k_hw_nvram_read(ah, AR5416_EEPROM_MAGIC_OFFSET, &magic)) {
@@ -167,32 +168,41 @@ int ath9k_hw_nvram_swap_data(struct ath_hw *ah, bool *swap_needed, int size)
 		return -EIO;
 	}
 
-	*swap_needed = false;
 	if (swab16(magic) == AR5416_EEPROM_MAGIC) {
-		if (ah->ah_flags & AH_NO_EEP_SWAP) {
-			ath_info(common,
-				 "Ignoring endianness difference in EEPROM magic bytes.\n");
-		} else {
-			*swap_needed = true;
-		}
+		needs_byteswap = true;
+		ath_dbg(common, EEPROM,
+			"EEPROM needs byte-swapping to correct endianness.\n");
 	} else if (magic != AR5416_EEPROM_MAGIC) {
-		if (ath9k_hw_use_flash(ah))
-			return 0;
-
+		if (ath9k_hw_use_flash(ah)) {
+			ath_dbg(common, EEPROM,
+				"Ignoring invalid EEPROM magic (0x%04x).\n",
+				magic);
+		} else {
 			ath_err(common,
-			"Invalid EEPROM Magic (0x%04x).\n", magic);
+				"Invalid EEPROM magic (0x%04x).\n", magic);
 			return -EINVAL;
 		}
+	}
 
+	if (needs_byteswap) {
+		if (ah->ah_flags & AH_NO_EEP_SWAP) {
+			ath_info(common,
+				 "Ignoring endianness difference in EEPROM magic bytes.\n");
+		} else {
 			eepdata = (u16 *)(&ah->eeprom);
 
-	if (*swap_needed) {
-		ath_dbg(common, EEPROM,
-			"EEPROM Endianness is not native.. Changing.\n");
-
 			for (i = 0; i < size; i++)
 				eepdata[i] = swab16(eepdata[i]);
 		}
+	}
+
+	if (ah->eep_ops->get_eepmisc(ah) & AR5416_EEPMISC_BIG_ENDIAN) {
+		*swap_needed = true;
+		ath_dbg(common, EEPROM,
+			"Big Endian EEPROM detected according to EEPMISC register.\n");
+	} else {
+		*swap_needed = false;
+	}
 
 	return 0;
 }

drivers/net/wireless/ath/ath9k/eeprom.h

@@ -23,6 +23,17 @@
 #include <net/cfg80211.h>
 #include "ar9003_eeprom.h"
 
+/* helpers to swap EEPROM fields, which are stored as __le16 or __le32. Since
+ * we are 100% sure about it we __force these to u16/u32 for the swab calls to
+ * silence the sparse checks. These macros are used when we have a Big Endian
+ * EEPROM (according to AR5416_EEPMISC_BIG_ENDIAN) and need to convert the
+ * fields to __le16/__le32.
+ */
+#define EEPROM_FIELD_SWAB16(field) \
+	(field = (__force __le16)swab16((__force u16)field))
+#define EEPROM_FIELD_SWAB32(field) \
+	(field = (__force __le32)swab32((__force u32)field))
+
 #ifdef __BIG_ENDIAN
 #define AR5416_EEPROM_MAGIC 0x5aa5
 #else
@@ -99,7 +110,6 @@
 #define FBIN2FREQ(x, y)		((y) ? (2300 + x) : (4800 + 5 * x))
 #define ath9k_hw_use_flash(_ah)	(!(_ah->ah_flags & AH_USE_EEPROM))
 
-#define AR5416_VER_MASK (eep->baseEepHeader.version & AR5416_EEP_VER_MINOR_MASK)
 #define OLC_FOR_AR9280_20_LATER (AR_SREV_9280_20_OR_LATER(ah) && \
 				 ah->eep_ops->get_eeprom(ah, EEP_OL_PWRCTRL))
 #define OLC_FOR_AR9287_10_LATER (AR_SREV_9287_11_OR_LATER(ah) && \
@@ -121,6 +131,8 @@
 
 #define AR5416_EEP_NO_BACK_VER       0x1
 #define AR5416_EEP_VER               0xE
+#define AR5416_EEP_VER_MAJOR_SHIFT   12
+#define AR5416_EEP_VER_MAJOR_MASK    0xF000
 #define AR5416_EEP_VER_MINOR_MASK    0x0FFF
 #define AR5416_EEP_MINOR_VER_2       0x2
 #define AR5416_EEP_MINOR_VER_3       0x3
@@ -161,6 +173,9 @@
 #define AR5416_EEP_TXGAIN_ORIGINAL         0
 #define AR5416_EEP_TXGAIN_HIGH_POWER       1
 
+/* Endianness of EEPROM content */
+#define AR5416_EEPMISC_BIG_ENDIAN          0x01
+
 #define AR5416_EEP4K_START_LOC                64
 #define AR5416_EEP4K_NUM_2G_CAL_PIERS         3
 #define AR5416_EEP4K_NUM_2G_CCK_TARGET_POWERS 3
@@ -174,7 +189,6 @@
 #define AR9280_TX_GAIN_TABLE_SIZE 22
 
 #define AR9287_EEP_VER               0xE
-#define AR9287_EEP_VER_MINOR_MASK    0xFFF
 #define AR9287_EEP_MINOR_VER_1       0x1
 #define AR9287_EEP_MINOR_VER_2       0x2
 #define AR9287_EEP_MINOR_VER_3       0x3
@@ -191,7 +205,6 @@
 #define AR9287_NUM_CTLS              	12
 #define AR9287_NUM_BAND_EDGES        	4
 #define AR9287_PD_GAIN_ICEPTS           1
-#define AR9287_EEPMISC_BIG_ENDIAN       0x01
 #define AR9287_EEPMISC_WOW              0x02
 #define AR9287_MAX_CHAINS               2
 #define AR9287_ANT_16S                  32
@@ -228,7 +241,6 @@ enum eeprom_param {
 	EEP_DB_5,
 	EEP_OB_2,
 	EEP_DB_2,
-	EEP_MINOR_REV,
 	EEP_TX_MASK,
 	EEP_RX_MASK,
 	EEP_FSTCLK_5G,
@@ -269,19 +281,19 @@ enum ath9k_hal_freq_band {
 };
 
 struct base_eep_header {
-	u16 length;
-	u16 checksum;
-	u16 version;
+	__le16 length;
+	__le16 checksum;
+	__le16 version;
 	u8 opCapFlags;
 	u8 eepMisc;
-	u16 regDmn[2];
+	__le16 regDmn[2];
 	u8 macAddr[6];
 	u8 rxMask;
 	u8 txMask;
-	u16 rfSilent;
-	u16 blueToothOptions;
-	u16 deviceCap;
-	u32 binBuildNumber;
+	__le16 rfSilent;
+	__le16 blueToothOptions;
+	__le16 deviceCap;
+	__le32 binBuildNumber;
 	u8 deviceType;
 	u8 pwdclkind;
 	u8 fastClk5g;
@@ -299,33 +311,33 @@ struct base_eep_header {
 } __packed;
 
 struct base_eep_header_4k {
-	u16 length;
-	u16 checksum;
-	u16 version;
+	__le16 length;
+	__le16 checksum;
+	__le16 version;
 	u8 opCapFlags;
 	u8 eepMisc;
-	u16 regDmn[2];
+	__le16 regDmn[2];
 	u8 macAddr[6];
 	u8 rxMask;
 	u8 txMask;
-	u16 rfSilent;
-	u16 blueToothOptions;
-	u16 deviceCap;
-	u32 binBuildNumber;
+	__le16 rfSilent;
+	__le16 blueToothOptions;
+	__le16 deviceCap;
+	__le32 binBuildNumber;
 	u8 deviceType;
 	u8 txGainType;
 } __packed;
 
 
 struct spur_chan {
-	u16 spurChan;
+	__le16 spurChan;
 	u8 spurRangeLow;
 	u8 spurRangeHigh;
 } __packed;
 
 struct modal_eep_header {
-	u32 antCtrlChain[AR5416_MAX_CHAINS];
-	u32 antCtrlCommon;
+	__le32 antCtrlChain[AR5416_MAX_CHAINS];
+	__le32 antCtrlCommon;
 	u8 antennaGainCh[AR5416_MAX_CHAINS];
 	u8 switchSettling;
 	u8 txRxAttenCh[AR5416_MAX_CHAINS];
@@ -360,7 +372,7 @@ struct modal_eep_header {
 	u8 db_ch1;
 	u8 lna_ctl;
 	u8 miscBits;
-	u16 xpaBiasLvlFreq[3];
+	__le16 xpaBiasLvlFreq[3];
 	u8 futureModal[6];
 
 	struct spur_chan spurChans[AR_EEPROM_MODAL_SPURS];
@@ -374,8 +386,8 @@ struct calDataPerFreqOpLoop {
 } __packed;
 
 struct modal_eep_4k_header {
-	u32 antCtrlChain[AR5416_EEP4K_MAX_CHAINS];
-	u32 antCtrlCommon;
+	__le32 antCtrlChain[AR5416_EEP4K_MAX_CHAINS];
+	__le32 antCtrlCommon;
 	u8 antennaGainCh[AR5416_EEP4K_MAX_CHAINS];
 	u8 switchSettling;
 	u8 txRxAttenCh[AR5416_EEP4K_MAX_CHAINS];
@@ -439,19 +451,19 @@ struct modal_eep_4k_header {
 } __packed;
 
 struct base_eep_ar9287_header {
-	u16 length;
-	u16 checksum;
-	u16 version;
+	__le16 length;
+	__le16 checksum;
+	__le16 version;
 	u8 opCapFlags;
 	u8 eepMisc;
-	u16 regDmn[2];
+	__le16 regDmn[2];
 	u8 macAddr[6];
 	u8 rxMask;
 	u8 txMask;
-	u16 rfSilent;
-	u16 blueToothOptions;
-	u16 deviceCap;
-	u32 binBuildNumber;
+	__le16 rfSilent;
+	__le16 blueToothOptions;
+	__le16 deviceCap;
+	__le32 binBuildNumber;
 	u8 deviceType;
 	u8 openLoopPwrCntl;
 	int8_t pwrTableOffset;
@@ -461,8 +473,8 @@ struct base_eep_ar9287_header {
 } __packed;
 
 struct modal_eep_ar9287_header {
-	u32 antCtrlChain[AR9287_MAX_CHAINS];
-	u32 antCtrlCommon;
+	__le32 antCtrlChain[AR9287_MAX_CHAINS];
+	__le32 antCtrlCommon;
 	int8_t antennaGainCh[AR9287_MAX_CHAINS];
 	u8 switchSettling;
 	u8 txRxAttenCh[AR9287_MAX_CHAINS];
@@ -653,6 +665,7 @@ struct eeprom_ops {
 			   u16 cfgCtl, u8 twiceAntennaReduction,
 			   u8 powerLimit, bool test);
 	u16 (*get_spur_channel)(struct ath_hw *ah, u16 i, bool is2GHz);
+	u8 (*get_eepmisc)(struct ath_hw *ah);
 };
 
 void ath9k_hw_analog_shift_regwrite(struct ath_hw *ah, u32 reg, u32 val);

drivers/net/wireless/ath/ath9k/eeprom_9287.c

@@ -22,12 +22,17 @@
 
 static int ath9k_hw_ar9287_get_eeprom_ver(struct ath_hw *ah)
 {
-	return (ah->eeprom.map9287.baseEepHeader.version >> 12) & 0xF;
+	u16 version = le16_to_cpu(ah->eeprom.map9287.baseEepHeader.version);
+
+	return (version & AR5416_EEP_VER_MAJOR_MASK) >>
+		AR5416_EEP_VER_MAJOR_SHIFT;
 }
 
 static int ath9k_hw_ar9287_get_eeprom_rev(struct ath_hw *ah)
 {
-	return (ah->eeprom.map9287.baseEepHeader.version) & 0xFFF;
+	u16 version = le16_to_cpu(ah->eeprom.map9287.baseEepHeader.version);
+
+	return version & AR5416_EEP_VER_MINOR_MASK;
 }
 
 static bool __ath9k_hw_ar9287_fill_eeprom(struct ath_hw *ah)
@@ -74,9 +79,9 @@ static bool ath9k_hw_ar9287_fill_eeprom(struct ath_hw *ah)
 static u32 ar9287_dump_modal_eeprom(char *buf, u32 len, u32 size,
 				    struct modal_eep_ar9287_header *modal_hdr)
 {
-	PR_EEP("Chain0 Ant. Control", modal_hdr->antCtrlChain[0]);
-	PR_EEP("Chain1 Ant. Control", modal_hdr->antCtrlChain[1]);
-	PR_EEP("Ant. Common Control", modal_hdr->antCtrlCommon);
+	PR_EEP("Chain0 Ant. Control", le16_to_cpu(modal_hdr->antCtrlChain[0]));
+	PR_EEP("Chain1 Ant. Control", le16_to_cpu(modal_hdr->antCtrlChain[1]));
+	PR_EEP("Ant. Common Control", le32_to_cpu(modal_hdr->antCtrlCommon));
 	PR_EEP("Chain0 Ant. Gain", modal_hdr->antennaGainCh[0]);
 	PR_EEP("Chain1 Ant. Gain", modal_hdr->antennaGainCh[1]);
 	PR_EEP("Switch Settle", modal_hdr->switchSettling);
@@ -123,6 +128,7 @@ static u32 ath9k_hw_ar9287_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr,
 {
 	struct ar9287_eeprom *eep = &ah->eeprom.map9287;
 	struct base_eep_ar9287_header *pBase = &eep->baseEepHeader;
+	u32 binBuildNumber = le32_to_cpu(pBase->binBuildNumber);
 
 	if (!dump_base_hdr) {
 		len += scnprintf(buf + len, size - len,
@@ -132,12 +138,12 @@ static u32 ath9k_hw_ar9287_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr,
 		goto out;
 	}
 
-	PR_EEP("Major Version", pBase->version >> 12);
-	PR_EEP("Minor Version", pBase->version & 0xFFF);
-	PR_EEP("Checksum", pBase->checksum);
-	PR_EEP("Length", pBase->length);
-	PR_EEP("RegDomain1", pBase->regDmn[0]);
-	PR_EEP("RegDomain2", pBase->regDmn[1]);
+	PR_EEP("Major Version", ath9k_hw_ar9287_get_eeprom_ver(ah));
+	PR_EEP("Minor Version", ath9k_hw_ar9287_get_eeprom_rev(ah));
+	PR_EEP("Checksum", le16_to_cpu(pBase->checksum));
+	PR_EEP("Length", le16_to_cpu(pBase->length));
+	PR_EEP("RegDomain1", le16_to_cpu(pBase->regDmn[0]));
+	PR_EEP("RegDomain2", le16_to_cpu(pBase->regDmn[1]));
 	PR_EEP("TX Mask", pBase->txMask);
 	PR_EEP("RX Mask", pBase->rxMask);
 	PR_EEP("Allow 5GHz", !!(pBase->opCapFlags & AR5416_OPFLAGS_11A));
@@ -150,10 +156,10 @@ static u32 ath9k_hw_ar9287_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr,
 					AR5416_OPFLAGS_N_5G_HT20));
 	PR_EEP("Disable 5Ghz HT40", !!(pBase->opCapFlags &
 					AR5416_OPFLAGS_N_5G_HT40));
-	PR_EEP("Big Endian", !!(pBase->eepMisc & 0x01));
-	PR_EEP("Cal Bin Major Ver", (pBase->binBuildNumber >> 24) & 0xFF);
-	PR_EEP("Cal Bin Minor Ver", (pBase->binBuildNumber >> 16) & 0xFF);
-	PR_EEP("Cal Bin Build", (pBase->binBuildNumber >> 8) & 0xFF);
+	PR_EEP("Big Endian", !!(pBase->eepMisc & AR5416_EEPMISC_BIG_ENDIAN));
+	PR_EEP("Cal Bin Major Ver", (binBuildNumber >> 24) & 0xFF);
+	PR_EEP("Cal Bin Minor Ver", (binBuildNumber >> 16) & 0xFF);
+	PR_EEP("Cal Bin Build", (binBuildNumber >> 8) & 0xFF);
 	PR_EEP("Power Table Offset", pBase->pwrTableOffset);
 	PR_EEP("OpenLoop Power Ctrl", pBase->openLoopPwrCntl);
 
@@ -177,8 +183,7 @@ static u32 ath9k_hw_ar9287_dump_eeprom(struct ath_hw *ah, bool dump_base_hdr,
 
 static int ath9k_hw_ar9287_check_eeprom(struct ath_hw *ah)
 {
-	u32 el, integer;
-	u16 word;
+	u32 el;
 	int i, err;
 	bool need_swap;
 	struct ar9287_eeprom *eep = &ah->eeprom.map9287;
@@ -188,51 +193,31 @@ static int ath9k_hw_ar9287_check_eeprom(struct ath_hw *ah)
 		return err;
 
 	if (need_swap)
-		el = swab16(eep->baseEepHeader.length);
+		el = swab16((__force u16)eep->baseEepHeader.length);
 	else
-		el = eep->baseEepHeader.length;
+		el = le16_to_cpu(eep->baseEepHeader.length);
 
 	el = min(el / sizeof(u16), SIZE_EEPROM_AR9287);
 	if (!ath9k_hw_nvram_validate_checksum(ah, el))
 		return -EINVAL;
 
 	if (need_swap) {
-		word = swab16(eep->baseEepHeader.length);
-		eep->baseEepHeader.length = word;
-
-		word = swab16(eep->baseEepHeader.checksum);
-		eep->baseEepHeader.checksum = word;
-
-		word = swab16(eep->baseEepHeader.version);
-		eep->baseEepHeader.version = word;
-
-		word = swab16(eep->baseEepHeader.regDmn[0]);
-		eep->baseEepHeader.regDmn[0] = word;
-
-		word = swab16(eep->baseEepHeader.regDmn[1]);
-		eep->baseEepHeader.regDmn[1] = word;
-
-		word = swab16(eep->baseEepHeader.rfSilent);
-		eep->baseEepHeader.rfSilent = word;
-
-		word = swab16(eep->baseEepHeader.blueToothOptions);
-		eep->baseEepHeader.blueToothOptions = word;
-
-		word = swab16(eep->baseEepHeader.deviceCap);
-		eep->baseEepHeader.deviceCap = word;
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.length);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.checksum);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.version);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.regDmn[0]);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.regDmn[1]);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.rfSilent);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.blueToothOptions);
+		EEPROM_FIELD_SWAB16(eep->baseEepHeader.deviceCap);
+		EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlCommon);
 
-		integer = swab32(eep->modalHeader.antCtrlCommon);
-		eep->modalHeader.antCtrlCommon = integer;
+		for (i = 0; i < AR9287_MAX_CHAINS; i++)
+			EEPROM_FIELD_SWAB32(eep->modalHeader.antCtrlChain[i]);
 
-		for (i = 0; i < AR9287_MAX_CHAINS; i++) {
-			integer = swab32(eep->modalHeader.antCtrlChain[i]);
-			eep->modalHeader.antCtrlChain[i] = integer;
-		}
-
-		for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++) {
-			word = swab16(eep->modalHeader.spurChans[i].spurChan);
-			eep->modalHeader.spurChans[i].spurChan = word;
-		}
+		for (i = 0; i < AR_EEPROM_MODAL_SPURS; i++)
+			EEPROM_FIELD_SWAB16(
+				eep->modalHeader.spurChans[i].spurChan);
 	}
 
 	if (!ath9k_hw_nvram_check_version(ah, AR9287_EEP_VER,
@@ -250,9 +235,7 @@ static u32 ath9k_hw_ar9287_get_eeprom(struct ath_hw *ah,
 	struct ar9287_eeprom *eep = &ah->eeprom.map9287;
 	struct modal_eep_ar9287_header *pModal = &eep->modalHeader;
 	struct base_eep_ar9287_header *pBase = &eep->baseEepHeader;
-	u16 ver_minor;
-
-	ver_minor = pBase->version & AR9287_EEP_VER_MINOR_MASK;
+	u16 ver_minor = ath9k_hw_ar9287_get_eeprom_rev(ah);
 
 	switch (param) {
 	case EEP_NFTHRESH_2:
@@ -264,15 +247,13 @@ static u32 ath9k_hw_ar9287_get_eeprom(struct ath_hw *ah,
 	case EEP_MAC_MSW:
 		return get_unaligned_be16(pBase->macAddr + 4);
 	case EEP_REG_0:
-		return pBase->regDmn[0];
+		return le16_to_cpu(pBase->regDmn[0]);
 	case EEP_OP_CAP:
-		return pBase->deviceCap;
+		return le16_to_cpu(pBase->deviceCap);
 	case EEP_OP_MODE:
 		return pBase->opCapFlags;
 	case EEP_RF_SILENT:
-		return pBase->rfSilent;
-	case EEP_MINOR_REV:
-		return ver_minor;
+		return le16_to_cpu(pBase->rfSilent);
 	case EEP_TX_MASK:
 		return pBase->txMask;
 	case EEP_RX_MASK:
@@ -387,8 +368,7 @@ static void ath9k_hw_set_ar9287_power_cal_table(struct ath_hw *ah,
 
 	xpdMask = pEepData->modalHeader.xpdGain;
 
-	if ((pEepData->baseEepHeader.version & AR9287_EEP_VER_MINOR_MASK) >=
-	    AR9287_EEP_MINOR_VER_2)
+	if (ath9k_hw_ar9287_get_eeprom_rev(ah) >= AR9287_EEP_MINOR_VER_2)
 		pdGainOverlap_t2 = pEepData->modalHeader.pdGainOverlap;
 	else
 		pdGainOverlap_t2 = (u16)(MS(REG_READ(ah, AR_PHY_TPCRG5),
@@ -737,8 +717,7 @@ static void ath9k_hw_ar9287_set_txpower(struct ath_hw *ah,
 
 	memset(ratesArray, 0, sizeof(ratesArray));
 
-	if ((pEepData->baseEepHeader.version & AR9287_EEP_VER_MINOR_MASK) >=
-	    AR9287_EEP_MINOR_VER_2)
+	if (ath9k_hw_ar9287_get_eeprom_rev(ah) >= AR9287_EEP_MINOR_VER_2)
 		ht40PowerIncForPdadc = pModal->ht40PowerIncForPdadc;
 
 	ath9k_hw_set_ar9287_power_per_rate_table(ah, chan,
@@ -879,13 +858,13 @@ static void ath9k_hw_ar9287_set_board_values(struct ath_hw *ah,
 
 	pModal = &eep->modalHeader;
 
-	REG_WRITE(ah, AR_PHY_SWITCH_COM, pModal->antCtrlCommon);
+	REG_WRITE(ah, AR_PHY_SWITCH_COM, le32_to_cpu(pModal->antCtrlCommon));
 
 	for (i = 0; i < AR9287_MAX_CHAINS; i++)	{
 		regChainOffset = i * 0x1000;
 
 		REG_WRITE(ah, AR_PHY_SWITCH_CHAIN_0 + regChainOffset,
-			  pModal->antCtrlChain[i]);
+			  le32_to_cpu(pModal->antCtrlChain[i]));
 
 		REG_WRITE(ah, AR_PHY_TIMING_CTRL4(0) + regChainOffset,
 			  (REG_READ(ah, AR_PHY_TIMING_CTRL4(0) + regChainOffset)
@@ -983,7 +962,14 @@ static void ath9k_hw_ar9287_set_board_values(struct ath_hw *ah,
 static u16 ath9k_hw_ar9287_get_spur_channel(struct ath_hw *ah,
 					    u16 i, bool is2GHz)
 {
-	return ah->eeprom.map9287.modalHeader.spurChans[i].spurChan;
+	__le16 spur_ch = ah->eeprom.map9287.modalHeader.spurChans[i].spurChan;
+
+	return le16_to_cpu(spur_ch);
+}
+
+static u8 ath9k_hw_ar9287_get_eepmisc(struct ath_hw *ah)
+{
+	return ah->eeprom.map9287.baseEepHeader.eepMisc;
 }
 
 const struct eeprom_ops eep_ar9287_ops = {
@@ -995,5 +981,6 @@ const struct eeprom_ops eep_ar9287_ops = {
 	.get_eeprom_rev		= ath9k_hw_ar9287_get_eeprom_rev,
 	.set_board_values	= ath9k_hw_ar9287_set_board_values,
 	.set_txpower		= ath9k_hw_ar9287_set_txpower,
-	.get_spur_channel	= ath9k_hw_ar9287_get_spur_channel
+	.get_spur_channel	= ath9k_hw_ar9287_get_spur_channel,
+	.get_eepmisc		= ath9k_hw_ar9287_get_eepmisc
 };

drivers/net/wireless/ath/ath9k/init.c

@@ -620,6 +620,8 @@ static int ath9k_init_softc(u16 devid, struct ath_softc *sc,
 
 	/* Will be cleared in ath9k_start() */
 	set_bit(ATH_OP_INVALID, &common->op_flags);
+	sc->airtime_flags = (AIRTIME_USE_TX | AIRTIME_USE_RX |
+			     AIRTIME_USE_NEW_QUEUES);
 
 	sc->sc_ah = ah;
 	sc->dfs_detector = dfs_pattern_detector_init(common, NL80211_DFS_UNSET);

drivers/net/wireless/ath/ath9k/main.c

@@ -70,10 +70,10 @@ static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq,
 		goto out;
 
 	if (txq->mac80211_qnum >= 0) {
-		struct list_head *list;
+		struct ath_acq *acq;
 
-		list = &sc->cur_chan->acq[txq->mac80211_qnum];
-		if (!list_empty(list))
+		acq = &sc->cur_chan->acq[txq->mac80211_qnum];
+		if (!list_empty(&acq->acq_new) || !list_empty(&acq->acq_old))
 			pending = true;
 	}
 out:

drivers/net/wireless/ath/ath9k/recv.c

@@ -1002,6 +1002,70 @@ static void ath9k_apply_ampdu_details(struct ath_softc *sc,
 	}
 }
 
+static void ath_rx_count_airtime(struct ath_softc *sc,
+				 struct ath_rx_status *rs,
+				 struct sk_buff *skb)
+{
+	struct ath_node *an;
+	struct ath_acq *acq;
+	struct ath_vif *avp;
+	struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+	struct ath_hw *ah = sc->sc_ah;
+	struct ath_common *common = ath9k_hw_common(ah);
+	struct ieee80211_sta *sta;
+	struct ieee80211_rx_status *rxs;
+	const struct ieee80211_rate *rate;
+	bool is_sgi, is_40, is_sp;
+	int phy;
+	u16 len = rs->rs_datalen;
+	u32 airtime = 0;
+	u8 tidno, acno;
+
+	if (!ieee80211_is_data(hdr->frame_control))
+		return;
+
+	rcu_read_lock();
+
+	sta = ieee80211_find_sta_by_ifaddr(sc->hw, hdr->addr2, NULL);
+	if (!sta)
+		goto exit;
+	an = (struct ath_node *) sta->drv_priv;
+	avp = (struct ath_vif *) an->vif->drv_priv;
+	tidno = skb->priority & IEEE80211_QOS_CTL_TID_MASK;
+	acno = TID_TO_WME_AC(tidno);
+	acq = &avp->chanctx->acq[acno];
+
+	rxs = IEEE80211_SKB_RXCB(skb);
+
+	is_sgi = !!(rxs->flag & RX_FLAG_SHORT_GI);
+	is_40 = !!(rxs->flag & RX_FLAG_40MHZ);
+	is_sp = !!(rxs->flag & RX_FLAG_SHORTPRE);
+
+	if (!!(rxs->flag & RX_FLAG_HT)) {
+		/* MCS rates */
+
+		airtime += ath_pkt_duration(sc, rxs->rate_idx, len,
+					is_40, is_sgi, is_sp);
+	} else {
+
+		phy = IS_CCK_RATE(rs->rs_rate) ? WLAN_RC_PHY_CCK : WLAN_RC_PHY_OFDM;
+		rate = &common->sbands[rxs->band].bitrates[rxs->rate_idx];
+		airtime += ath9k_hw_computetxtime(ah, phy, rate->bitrate * 100,
+						len, rxs->rate_idx, is_sp);
+	}
+
+ 	if (!!(sc->airtime_flags & AIRTIME_USE_RX)) {
+		spin_lock_bh(&acq->lock);
+		an->airtime_deficit[acno] -= airtime;
+		if (an->airtime_deficit[acno] <= 0)
+			__ath_tx_queue_tid(sc, ATH_AN_2_TID(an, tidno));
+		spin_unlock_bh(&acq->lock);
+	}
+	ath_debug_airtime(sc, an, airtime, 0);
+exit:
+	rcu_read_unlock();
+}
+
 int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 {
 	struct ath_rxbuf *bf;
@@ -1148,6 +1212,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
 		ath9k_antenna_check(sc, &rs);
 		ath9k_apply_ampdu_details(sc, &rs, rxs);
 		ath_debug_rate_stats(sc, &rs, skb);
+		ath_rx_count_airtime(sc, &rs, skb);
 
 		hdr = (struct ieee80211_hdr *)skb->data;
 		if (ieee80211_is_ack(hdr->frame_control))

drivers/net/wireless/ath/ath9k/xmit.c

@@ -97,18 +97,6 @@ static void ath_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
 	dev_kfree_skb(skb);
 }
 
-void ath_txq_lock(struct ath_softc *sc, struct ath_txq *txq)
-	__acquires(&txq->axq_lock)
-{
-	spin_lock_bh(&txq->axq_lock);
-}
-
-void ath_txq_unlock(struct ath_softc *sc, struct ath_txq *txq)
-	__releases(&txq->axq_lock)
-{
-	spin_unlock_bh(&txq->axq_lock);
-}
-
 void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq)
 	__releases(&txq->axq_lock)
 {
@@ -124,21 +112,44 @@ void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq)
 		ath_tx_status(hw, skb);
 }
 
-static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq,
-			     struct ath_atx_tid *tid)
+void __ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
 {
-	struct list_head *list;
 	struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv;
 	struct ath_chanctx *ctx = avp->chanctx;
+	struct ath_acq *acq;
+	struct list_head *tid_list;
+	u8 acno = TID_TO_WME_AC(tid->tidno);
 
-	if (!ctx)
+	if (!ctx || !list_empty(&tid->list))
 		return;
 
-	list = &ctx->acq[TID_TO_WME_AC(tid->tidno)];
-	if (list_empty(&tid->list))
-		list_add_tail(&tid->list, list);
+
+	acq = &ctx->acq[acno];
+	if ((sc->airtime_flags & AIRTIME_USE_NEW_QUEUES) &&
+	    tid->an->airtime_deficit[acno] > 0)
+		tid_list = &acq->acq_new;
+	else
+		tid_list = &acq->acq_old;
+
+	list_add_tail(&tid->list, tid_list);
 }
 
+void ath_tx_queue_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
+{
+	struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv;
+	struct ath_chanctx *ctx = avp->chanctx;
+	struct ath_acq *acq;
+
+	if (!ctx || !list_empty(&tid->list))
+		return;
+
+	acq = &ctx->acq[TID_TO_WME_AC(tid->tidno)];
+	spin_lock_bh(&acq->lock);
+	__ath_tx_queue_tid(sc, tid);
+	spin_unlock_bh(&acq->lock);
+}
+
+
 void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue)
 {
 	struct ath_softc *sc = hw->priv;
@@ -153,7 +164,7 @@ void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue)
 	ath_txq_lock(sc, txq);
 
 	tid->has_queued = true;
-	ath_tx_queue_tid(sc, txq, tid);
+	ath_tx_queue_tid(sc, tid);
 	ath_txq_schedule(sc, txq);
 
 	ath_txq_unlock(sc, txq);
@@ -660,7 +671,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
 
 		skb_queue_splice_tail(&bf_pending, &tid->retry_q);
 		if (!an->sleeping) {
-			ath_tx_queue_tid(sc, txq, tid);
+			ath_tx_queue_tid(sc, tid);
 
 			if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY))
 				tid->clear_ps_filter = true;
@@ -688,6 +699,53 @@ static bool bf_is_ampdu_not_probing(struct ath_buf *bf)
     return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
 }
 
+static void ath_tx_count_airtime(struct ath_softc *sc, struct ath_txq *txq,
+				 struct ath_buf *bf, struct ath_tx_status *ts)
+{
+	struct ath_node *an;
+	struct ath_acq *acq = &sc->cur_chan->acq[txq->mac80211_qnum];
+	struct sk_buff *skb;
+	struct ieee80211_hdr *hdr;
+	struct ieee80211_hw *hw = sc->hw;
+	struct ieee80211_tx_rate rates[4];
+	struct ieee80211_sta *sta;
+	int i;
+	u32 airtime = 0;
+
+	skb = bf->bf_mpdu;
+	if(!skb)
+		return;
+
+	hdr = (struct ieee80211_hdr *)skb->data;
+	memcpy(rates, bf->rates, sizeof(rates));
+
+	rcu_read_lock();
+
+	sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
+	if(!sta)
+		goto exit;
+
+
+	an = (struct ath_node *) sta->drv_priv;
+
+	airtime += ts->duration * (ts->ts_longretry + 1);
+
+	for(i=0; i < ts->ts_rateindex; i++)
+		airtime += ath9k_hw_get_duration(sc->sc_ah, bf->bf_desc, i) * rates[i].count;
+
+	if (!!(sc->airtime_flags & AIRTIME_USE_TX)) {
+		spin_lock_bh(&acq->lock);
+		an->airtime_deficit[txq->mac80211_qnum] -= airtime;
+		if (an->airtime_deficit[txq->mac80211_qnum] <= 0)
+			__ath_tx_queue_tid(sc, ath_get_skb_tid(sc, an, skb));
+		spin_unlock_bh(&acq->lock);
+	}
+	ath_debug_airtime(sc, an, 0, airtime);
+
+exit:
+	rcu_read_unlock();
+}
+
 static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
 				  struct ath_tx_status *ts, struct ath_buf *bf,
 				  struct list_head *bf_head)
@@ -709,6 +767,7 @@ static void ath_tx_process_buffer(struct ath_softc *sc, struct ath_txq *txq,
 
 	ts->duration = ath9k_hw_get_duration(sc->sc_ah, bf->bf_desc,
 					     ts->ts_rateindex);
+	ath_tx_count_airtime(sc, txq, bf, ts);
 
 	hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
 	sta = ieee80211_find_sta_by_ifaddr(hw, hdr->addr1, hdr->addr2);
@@ -1068,7 +1127,7 @@ ath_tx_form_aggr(struct ath_softc *sc, struct ath_txq *txq,
  * width  - 0 for 20 MHz, 1 for 40 MHz
  * half_gi - to use 4us v/s 3.6 us for symbol time
  */
-static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen,
+u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen,
 		     int width, int half_gi, bool shortPreamble)
 {
 	u32 nbits, nsymbits, duration, nsymbols;
@@ -1151,8 +1210,9 @@ static u8 ath_get_rate_txpower(struct ath_softc *sc, struct ath_buf *bf,
 		if (is_40) {
 			u8 power_ht40delta;
 			struct ar5416_eeprom_def *eep = &ah->eeprom.def;
+			u16 eeprom_rev = ah->eep_ops->get_eeprom_rev(ah);
 
-			if (AR5416_VER_MASK >= AR5416_EEP_MINOR_VER_2) {
+			if (eeprom_rev >= AR5416_EEP_MINOR_VER_2) {
 				bool is_2ghz;
 				struct modal_eep_header *pmodal;
 
@@ -1467,7 +1527,7 @@ ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq,
 }
 
 static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
-			      struct ath_atx_tid *tid, bool *stop)
+			      struct ath_atx_tid *tid)
 {
 	struct ath_buf *bf;
 	struct ieee80211_tx_info *tx_info;
@@ -1489,7 +1549,6 @@ static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
 	if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) ||
 	    (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH)) {
 		__skb_queue_tail(&tid->retry_q, bf->bf_mpdu);
-		*stop = true;
 		return false;
 	}
 
@@ -1613,7 +1672,7 @@ void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an)
 		ath_txq_lock(sc, txq);
 		tid->clear_ps_filter = true;
 		if (ath_tid_has_buffered(tid)) {
-			ath_tx_queue_tid(sc, txq, tid);
+			ath_tx_queue_tid(sc, tid);
 			ath_txq_schedule(sc, txq);
 		}
 		ath_txq_unlock_complete(sc, txq);
@@ -1912,9 +1971,10 @@ void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
 void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
 {
 	struct ath_common *common = ath9k_hw_common(sc->sc_ah);
-	struct ath_atx_tid *tid, *last_tid;
+	struct ath_atx_tid *tid;
 	struct list_head *tid_list;
-	bool sent = false;
+	struct ath_acq *acq;
+	bool active = AIRTIME_ACTIVE(sc->airtime_flags);
 
 	if (txq->mac80211_qnum < 0)
 		return;
@@ -1923,48 +1983,55 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
 		return;
 
 	spin_lock_bh(&sc->chan_lock);
-	tid_list = &sc->cur_chan->acq[txq->mac80211_qnum];
-
-	if (list_empty(tid_list)) {
-		spin_unlock_bh(&sc->chan_lock);
-		return;
-	}
-
 	rcu_read_lock();
-
-	last_tid = list_entry(tid_list->prev, struct ath_atx_tid, list);
-	while (!list_empty(tid_list)) {
-		bool stop = false;
+	acq = &sc->cur_chan->acq[txq->mac80211_qnum];
 
 	if (sc->cur_chan->stopped)
-			break;
+		goto out;
 
+begin:
+	tid_list = &acq->acq_new;
+	if (list_empty(tid_list)) {
+		tid_list = &acq->acq_old;
+		if (list_empty(tid_list))
+			goto out;
+	}
 	tid = list_first_entry(tid_list, struct ath_atx_tid, list);
+
+	if (active && tid->an->airtime_deficit[txq->mac80211_qnum] <= 0) {
+		spin_lock_bh(&acq->lock);
+		tid->an->airtime_deficit[txq->mac80211_qnum] += ATH_AIRTIME_QUANTUM;
+		list_move_tail(&tid->list, &acq->acq_old);
+		spin_unlock_bh(&acq->lock);
+		goto begin;
+	}
+
+	if (!ath_tid_has_buffered(tid)) {
+		spin_lock_bh(&acq->lock);
+		if ((tid_list == &acq->acq_new) && !list_empty(&acq->acq_old))
+			list_move_tail(&tid->list, &acq->acq_old);
+		else {
 			list_del_init(&tid->list);
+		}
+		spin_unlock_bh(&acq->lock);
+		goto begin;
+	}
 
-		if (ath_tx_sched_aggr(sc, txq, tid, &stop))
-			sent = true;
 
 	/*
-		 * add tid to round-robin queue if more frames
-		 * are pending for the tid
+	 * If we succeed in scheduling something, immediately restart to make
+	 * sure we keep the HW busy.
 	 */
-		if (ath_tid_has_buffered(tid))
-			ath_tx_queue_tid(sc, txq, tid);
-
-		if (stop)
-			break;
-
-		if (tid == last_tid) {
-			if (!sent)
-				break;
-
-			sent = false;
-			last_tid = list_entry(tid_list->prev,
-					      struct ath_atx_tid, list);
+	if(ath_tx_sched_aggr(sc, txq, tid)) {
+		if (!active) {
+			spin_lock_bh(&acq->lock);
+			list_move_tail(&tid->list, &acq->acq_old);
+			spin_unlock_bh(&acq->lock);
 		}
+		goto begin;
 	}
 
+out:
 	rcu_read_unlock();
 	spin_unlock_bh(&sc->chan_lock);
 }
@@ -2818,6 +2885,9 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
 	struct ath_atx_tid *tid;
 	int tidno, acno;
 
+	for (acno = 0; acno < IEEE80211_NUM_ACS; acno++)
+		an->airtime_deficit[acno] = ATH_AIRTIME_QUANTUM;
+
 	for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
 		tid = ath_node_to_tid(an, tidno);
 		tid->an        = an;