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, 976 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
new file mode 100644
index 00000000000..8ae4ec21667
--- /dev/null
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -0,0 +1,976 @@
+/*
+ * Copyright (c) 2008-2009 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 "ath9k.h"
+
+static void ath9k_hw_set_txq_interrupts(struct ath_hw *ah,
+					struct ath9k_tx_queue_info *qi)
+{
+	DPRINTF(ah->ah_sc, ATH_DBG_INTERRUPT,
+		"tx ok 0x%x err 0x%x desc 0x%x eol 0x%x urn 0x%x\n",
+		ah->txok_interrupt_mask, ah->txerr_interrupt_mask,
+		ah->txdesc_interrupt_mask, ah->txeol_interrupt_mask,
+		ah->txurn_interrupt_mask);
+
+	REG_WRITE(ah, AR_IMR_S0,
+		  SM(ah->txok_interrupt_mask, AR_IMR_S0_QCU_TXOK)
+		  | SM(ah->txdesc_interrupt_mask, AR_IMR_S0_QCU_TXDESC));
+	REG_WRITE(ah, AR_IMR_S1,
+		  SM(ah->txerr_interrupt_mask, AR_IMR_S1_QCU_TXERR)
+		  | SM(ah->txeol_interrupt_mask, AR_IMR_S1_QCU_TXEOL));
+	REG_RMW_FIELD(ah, AR_IMR_S2,
+		      AR_IMR_S2_QCU_TXURN, ah->txurn_interrupt_mask);
+}
+
+u32 ath9k_hw_gettxbuf(struct ath_hw *ah, u32 q)
+{
+	return REG_READ(ah, AR_QTXDP(q));
+}
+
+bool ath9k_hw_puttxbuf(struct ath_hw *ah, u32 q, u32 txdp)
+{
+	REG_WRITE(ah, AR_QTXDP(q), txdp);
+
+	return true;
+}
+
+bool ath9k_hw_txstart(struct ath_hw *ah, u32 q)
+{
+	DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Enable TXE on queue: %u\n", q);
+
+	REG_WRITE(ah, AR_Q_TXE, 1 << q);
+
+	return true;
+}
+
+u32 ath9k_hw_numtxpending(struct ath_hw *ah, u32 q)
+{
+	u32 npend;
+
+	npend = REG_READ(ah, AR_QSTS(q)) & AR_Q_STS_PEND_FR_CNT;
+	if (npend == 0) {
+
+		if (REG_READ(ah, AR_Q_TXE) & (1 << q))
+			npend = 1;
+	}
+
+	return npend;
+}
+
+bool ath9k_hw_updatetxtriglevel(struct ath_hw *ah, bool bIncTrigLevel)
+{
+	u32 txcfg, curLevel, newLevel;
+	enum ath9k_int omask;
+
+	if (ah->tx_trig_level >= MAX_TX_FIFO_THRESHOLD)
+		return false;
+
+	omask = ath9k_hw_set_interrupts(ah, ah->mask_reg & ~ATH9K_INT_GLOBAL);
+
+	txcfg = REG_READ(ah, AR_TXCFG);
+	curLevel = MS(txcfg, AR_FTRIG);
+	newLevel = curLevel;
+	if (bIncTrigLevel) {
+		if (curLevel < MAX_TX_FIFO_THRESHOLD)
+			newLevel++;
+	} else if (curLevel > MIN_TX_FIFO_THRESHOLD)
+		newLevel--;
+	if (newLevel != curLevel)
+		REG_WRITE(ah, AR_TXCFG,
+			  (txcfg & ~AR_FTRIG) | SM(newLevel, AR_FTRIG));
+
+	ath9k_hw_set_interrupts(ah, omask);
+
+	ah->tx_trig_level = newLevel;
+
+	return newLevel != curLevel;
+}
+
+bool ath9k_hw_stoptxdma(struct ath_hw *ah, u32 q)
+{
+#define ATH9K_TX_STOP_DMA_TIMEOUT	4000    /* usec */
+#define ATH9K_TIME_QUANTUM		100     /* usec */
+
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath9k_tx_queue_info *qi;
+	u32 tsfLow, j, wait;
+	u32 wait_time = ATH9K_TX_STOP_DMA_TIMEOUT / ATH9K_TIME_QUANTUM;
+
+	if (q >= pCap->total_queues) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Stopping TX DMA, "
+			"invalid queue: %u\n", q);
+		return false;
+	}
+
+	qi = &ah->txq[q];
+	if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Stopping TX DMA, "
+			"inactive queue: %u\n", q);
+		return false;
+	}
+
+	REG_WRITE(ah, AR_Q_TXD, 1 << q);
+
+	for (wait = wait_time; wait != 0; wait--) {
+		if (ath9k_hw_numtxpending(ah, q) == 0)
+			break;
+		udelay(ATH9K_TIME_QUANTUM);
+	}
+
+	if (ath9k_hw_numtxpending(ah, q)) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
+			"%s: Num of pending TX Frames %d on Q %d\n",
+			__func__, ath9k_hw_numtxpending(ah, q), q);
+
+		for (j = 0; j < 2; j++) {
+			tsfLow = REG_READ(ah, AR_TSF_L32);
+			REG_WRITE(ah, AR_QUIET2,
+				  SM(10, AR_QUIET2_QUIET_DUR));
+			REG_WRITE(ah, AR_QUIET_PERIOD, 100);
+			REG_WRITE(ah, AR_NEXT_QUIET_TIMER, tsfLow >> 10);
+			REG_SET_BIT(ah, AR_TIMER_MODE,
+				       AR_QUIET_TIMER_EN);
+
+			if ((REG_READ(ah, AR_TSF_L32) >> 10) == (tsfLow >> 10))
+				break;
+
+			DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
+				"TSF has moved while trying to set "
+				"quiet time TSF: 0x%08x\n", tsfLow);
+		}
+
+		REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
+
+		udelay(200);
+		REG_CLR_BIT(ah, AR_TIMER_MODE, AR_QUIET_TIMER_EN);
+
+		wait = wait_time;
+		while (ath9k_hw_numtxpending(ah, q)) {
+			if ((--wait) == 0) {
+				DPRINTF(ah->ah_sc, ATH_DBG_QUEUE,
+					"Failed to stop TX DMA in 100 "
+					"msec after killing last frame\n");
+				break;
+			}
+			udelay(ATH9K_TIME_QUANTUM);
+		}
+
+		REG_CLR_BIT(ah, AR_DIAG_SW, AR_DIAG_FORCE_CH_IDLE_HIGH);
+	}
+
+	REG_WRITE(ah, AR_Q_TXD, 0);
+	return wait != 0;
+
+#undef ATH9K_TX_STOP_DMA_TIMEOUT
+#undef ATH9K_TIME_QUANTUM
+}
+
+bool ath9k_hw_filltxdesc(struct ath_hw *ah, struct ath_desc *ds,
+			 u32 segLen, bool firstSeg,
+			 bool lastSeg, const struct ath_desc *ds0)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	if (firstSeg) {
+		ads->ds_ctl1 |= segLen | (lastSeg ? 0 : AR_TxMore);
+	} else if (lastSeg) {
+		ads->ds_ctl0 = 0;
+		ads->ds_ctl1 = segLen;
+		ads->ds_ctl2 = AR5416DESC_CONST(ds0)->ds_ctl2;
+		ads->ds_ctl3 = AR5416DESC_CONST(ds0)->ds_ctl3;
+	} else {
+		ads->ds_ctl0 = 0;
+		ads->ds_ctl1 = segLen | AR_TxMore;
+		ads->ds_ctl2 = 0;
+		ads->ds_ctl3 = 0;
+	}
+	ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
+	ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
+	ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
+	ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
+	ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
+
+	return true;
+}
+
+void ath9k_hw_cleartxdesc(struct ath_hw *ah, struct ath_desc *ds)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	ads->ds_txstatus0 = ads->ds_txstatus1 = 0;
+	ads->ds_txstatus2 = ads->ds_txstatus3 = 0;
+	ads->ds_txstatus4 = ads->ds_txstatus5 = 0;
+	ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
+	ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
+}
+
+int ath9k_hw_txprocdesc(struct ath_hw *ah, struct ath_desc *ds)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	if ((ads->ds_txstatus9 & AR_TxDone) == 0)
+		return -EINPROGRESS;
+
+	ds->ds_txstat.ts_seqnum = MS(ads->ds_txstatus9, AR_SeqNum);
+	ds->ds_txstat.ts_tstamp = ads->AR_SendTimestamp;
+	ds->ds_txstat.ts_status = 0;
+	ds->ds_txstat.ts_flags = 0;
+
+	if (ads->ds_txstatus1 & AR_ExcessiveRetries)
+		ds->ds_txstat.ts_status |= ATH9K_TXERR_XRETRY;
+	if (ads->ds_txstatus1 & AR_Filtered)
+		ds->ds_txstat.ts_status |= ATH9K_TXERR_FILT;
+	if (ads->ds_txstatus1 & AR_FIFOUnderrun) {
+		ds->ds_txstat.ts_status |= ATH9K_TXERR_FIFO;
+		ath9k_hw_updatetxtriglevel(ah, true);
+	}
+	if (ads->ds_txstatus9 & AR_TxOpExceeded)
+		ds->ds_txstat.ts_status |= ATH9K_TXERR_XTXOP;
+	if (ads->ds_txstatus1 & AR_TxTimerExpired)
+		ds->ds_txstat.ts_status |= ATH9K_TXERR_TIMER_EXPIRED;
+
+	if (ads->ds_txstatus1 & AR_DescCfgErr)
+		ds->ds_txstat.ts_flags |= ATH9K_TX_DESC_CFG_ERR;
+	if (ads->ds_txstatus1 & AR_TxDataUnderrun) {
+		ds->ds_txstat.ts_flags |= ATH9K_TX_DATA_UNDERRUN;
+		ath9k_hw_updatetxtriglevel(ah, true);
+	}
+	if (ads->ds_txstatus1 & AR_TxDelimUnderrun) {
+		ds->ds_txstat.ts_flags |= ATH9K_TX_DELIM_UNDERRUN;
+		ath9k_hw_updatetxtriglevel(ah, true);
+	}
+	if (ads->ds_txstatus0 & AR_TxBaStatus) {
+		ds->ds_txstat.ts_flags |= ATH9K_TX_BA;
+		ds->ds_txstat.ba_low = ads->AR_BaBitmapLow;
+		ds->ds_txstat.ba_high = ads->AR_BaBitmapHigh;
+	}
+
+	ds->ds_txstat.ts_rateindex = MS(ads->ds_txstatus9, AR_FinalTxIdx);
+	switch (ds->ds_txstat.ts_rateindex) {
+	case 0:
+		ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate0);
+		break;
+	case 1:
+		ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate1);
+		break;
+	case 2:
+		ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate2);
+		break;
+	case 3:
+		ds->ds_txstat.ts_ratecode = MS(ads->ds_ctl3, AR_XmitRate3);
+		break;
+	}
+
+	ds->ds_txstat.ts_rssi = MS(ads->ds_txstatus5, AR_TxRSSICombined);
+	ds->ds_txstat.ts_rssi_ctl0 = MS(ads->ds_txstatus0, AR_TxRSSIAnt00);
+	ds->ds_txstat.ts_rssi_ctl1 = MS(ads->ds_txstatus0, AR_TxRSSIAnt01);
+	ds->ds_txstat.ts_rssi_ctl2 = MS(ads->ds_txstatus0, AR_TxRSSIAnt02);
+	ds->ds_txstat.ts_rssi_ext0 = MS(ads->ds_txstatus5, AR_TxRSSIAnt10);
+	ds->ds_txstat.ts_rssi_ext1 = MS(ads->ds_txstatus5, AR_TxRSSIAnt11);
+	ds->ds_txstat.ts_rssi_ext2 = MS(ads->ds_txstatus5, AR_TxRSSIAnt12);
+	ds->ds_txstat.evm0 = ads->AR_TxEVM0;
+	ds->ds_txstat.evm1 = ads->AR_TxEVM1;
+	ds->ds_txstat.evm2 = ads->AR_TxEVM2;
+	ds->ds_txstat.ts_shortretry = MS(ads->ds_txstatus1, AR_RTSFailCnt);
+	ds->ds_txstat.ts_longretry = MS(ads->ds_txstatus1, AR_DataFailCnt);
+	ds->ds_txstat.ts_virtcol = MS(ads->ds_txstatus1, AR_VirtRetryCnt);
+	ds->ds_txstat.ts_antenna = 0;
+
+	return 0;
+}
+
+void ath9k_hw_set11n_txdesc(struct ath_hw *ah, struct ath_desc *ds,
+			    u32 pktLen, enum ath9k_pkt_type type, u32 txPower,
+			    u32 keyIx, enum ath9k_key_type keyType, u32 flags)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	txPower += ah->txpower_indexoffset;
+	if (txPower > 63)
+		txPower = 63;
+
+	ads->ds_ctl0 = (pktLen & AR_FrameLen)
+		| (flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
+		| SM(txPower, AR_XmitPower)
+		| (flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
+		| (flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
+		| (flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
+		| (keyIx != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0);
+
+	ads->ds_ctl1 =
+		(keyIx != ATH9K_TXKEYIX_INVALID ? SM(keyIx, AR_DestIdx) : 0)
+		| SM(type, AR_FrameType)
+		| (flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0)
+		| (flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
+		| (flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);
+
+	ads->ds_ctl6 = SM(keyType, AR_EncrType);
+
+	if (AR_SREV_9285(ah)) {
+		ads->ds_ctl8 = 0;
+		ads->ds_ctl9 = 0;
+		ads->ds_ctl10 = 0;
+		ads->ds_ctl11 = 0;
+	}
+}
+
+void ath9k_hw_set11n_ratescenario(struct ath_hw *ah, struct ath_desc *ds,
+				  struct ath_desc *lastds,
+				  u32 durUpdateEn, u32 rtsctsRate,
+				  u32 rtsctsDuration,
+				  struct ath9k_11n_rate_series series[],
+				  u32 nseries, u32 flags)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+	struct ar5416_desc *last_ads = AR5416DESC(lastds);
+	u32 ds_ctl0;
+
+	if (flags & (ATH9K_TXDESC_RTSENA | ATH9K_TXDESC_CTSENA)) {
+		ds_ctl0 = ads->ds_ctl0;
+
+		if (flags & ATH9K_TXDESC_RTSENA) {
+			ds_ctl0 &= ~AR_CTSEnable;
+			ds_ctl0 |= AR_RTSEnable;
+		} else {
+			ds_ctl0 &= ~AR_RTSEnable;
+			ds_ctl0 |= AR_CTSEnable;
+		}
+
+		ads->ds_ctl0 = ds_ctl0;
+	} else {
+		ads->ds_ctl0 =
+			(ads->ds_ctl0 & ~(AR_RTSEnable | AR_CTSEnable));
+	}
+
+	ads->ds_ctl2 = set11nTries(series, 0)
+		| set11nTries(series, 1)
+		| set11nTries(series, 2)
+		| set11nTries(series, 3)
+		| (durUpdateEn ? AR_DurUpdateEna : 0)
+		| SM(0, AR_BurstDur);
+
+	ads->ds_ctl3 = set11nRate(series, 0)
+		| set11nRate(series, 1)
+		| set11nRate(series, 2)
+		| set11nRate(series, 3);
+
+	ads->ds_ctl4 = set11nPktDurRTSCTS(series, 0)
+		| set11nPktDurRTSCTS(series, 1);
+
+	ads->ds_ctl5 = set11nPktDurRTSCTS(series, 2)
+		| set11nPktDurRTSCTS(series, 3);
+
+	ads->ds_ctl7 = set11nRateFlags(series, 0)
+		| set11nRateFlags(series, 1)
+		| set11nRateFlags(series, 2)
+		| set11nRateFlags(series, 3)
+		| SM(rtsctsRate, AR_RTSCTSRate);
+	last_ads->ds_ctl2 = ads->ds_ctl2;
+	last_ads->ds_ctl3 = ads->ds_ctl3;
+}
+
+void ath9k_hw_set11n_aggr_first(struct ath_hw *ah, struct ath_desc *ds,
+				u32 aggrLen)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
+	ads->ds_ctl6 &= ~AR_AggrLen;
+	ads->ds_ctl6 |= SM(aggrLen, AR_AggrLen);
+}
+
+void ath9k_hw_set11n_aggr_middle(struct ath_hw *ah, struct ath_desc *ds,
+				 u32 numDelims)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+	unsigned int ctl6;
+
+	ads->ds_ctl1 |= (AR_IsAggr | AR_MoreAggr);
+
+	ctl6 = ads->ds_ctl6;
+	ctl6 &= ~AR_PadDelim;
+	ctl6 |= SM(numDelims, AR_PadDelim);
+	ads->ds_ctl6 = ctl6;
+}
+
+void ath9k_hw_set11n_aggr_last(struct ath_hw *ah, struct ath_desc *ds)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	ads->ds_ctl1 |= AR_IsAggr;
+	ads->ds_ctl1 &= ~AR_MoreAggr;
+	ads->ds_ctl6 &= ~AR_PadDelim;
+}
+
+void ath9k_hw_clr11n_aggr(struct ath_hw *ah, struct ath_desc *ds)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	ads->ds_ctl1 &= (~AR_IsAggr & ~AR_MoreAggr);
+}
+
+void ath9k_hw_set11n_burstduration(struct ath_hw *ah, struct ath_desc *ds,
+				   u32 burstDuration)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	ads->ds_ctl2 &= ~AR_BurstDur;
+	ads->ds_ctl2 |= SM(burstDuration, AR_BurstDur);
+}
+
+void ath9k_hw_set11n_virtualmorefrag(struct ath_hw *ah, struct ath_desc *ds,
+				     u32 vmf)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+
+	if (vmf)
+		ads->ds_ctl0 |= AR_VirtMoreFrag;
+	else
+		ads->ds_ctl0 &= ~AR_VirtMoreFrag;
+}
+
+void ath9k_hw_gettxintrtxqs(struct ath_hw *ah, u32 *txqs)
+{
+	*txqs &= ah->intr_txqs;
+	ah->intr_txqs &= ~(*txqs);
+}
+
+bool ath9k_hw_set_txq_props(struct ath_hw *ah, int q,
+			    const struct ath9k_tx_queue_info *qinfo)
+{
+	u32 cw;
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath9k_tx_queue_info *qi;
+
+	if (q >= pCap->total_queues) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set TXQ properties, "
+			"invalid queue: %u\n", q);
+		return false;
+	}
+
+	qi = &ah->txq[q];
+	if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set TXQ properties, "
+			"inactive queue: %u\n", q);
+		return false;
+	}
+
+	DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Set queue properties for: %u\n", q);
+
+	qi->tqi_ver = qinfo->tqi_ver;
+	qi->tqi_subtype = qinfo->tqi_subtype;
+	qi->tqi_qflags = qinfo->tqi_qflags;
+	qi->tqi_priority = qinfo->tqi_priority;
+	if (qinfo->tqi_aifs != ATH9K_TXQ_USEDEFAULT)
+		qi->tqi_aifs = min(qinfo->tqi_aifs, 255U);
+	else
+		qi->tqi_aifs = INIT_AIFS;
+	if (qinfo->tqi_cwmin != ATH9K_TXQ_USEDEFAULT) {
+		cw = min(qinfo->tqi_cwmin, 1024U);
+		qi->tqi_cwmin = 1;
+		while (qi->tqi_cwmin < cw)
+			qi->tqi_cwmin = (qi->tqi_cwmin << 1) | 1;
+	} else
+		qi->tqi_cwmin = qinfo->tqi_cwmin;
+	if (qinfo->tqi_cwmax != ATH9K_TXQ_USEDEFAULT) {
+		cw = min(qinfo->tqi_cwmax, 1024U);
+		qi->tqi_cwmax = 1;
+		while (qi->tqi_cwmax < cw)
+			qi->tqi_cwmax = (qi->tqi_cwmax << 1) | 1;
+	} else
+		qi->tqi_cwmax = INIT_CWMAX;
+
+	if (qinfo->tqi_shretry != 0)
+		qi->tqi_shretry = min((u32) qinfo->tqi_shretry, 15U);
+	else
+		qi->tqi_shretry = INIT_SH_RETRY;
+	if (qinfo->tqi_lgretry != 0)
+		qi->tqi_lgretry = min((u32) qinfo->tqi_lgretry, 15U);
+	else
+		qi->tqi_lgretry = INIT_LG_RETRY;
+	qi->tqi_cbrPeriod = qinfo->tqi_cbrPeriod;
+	qi->tqi_cbrOverflowLimit = qinfo->tqi_cbrOverflowLimit;
+	qi->tqi_burstTime = qinfo->tqi_burstTime;
+	qi->tqi_readyTime = qinfo->tqi_readyTime;
+
+	switch (qinfo->tqi_subtype) {
+	case ATH9K_WME_UPSD:
+		if (qi->tqi_type == ATH9K_TX_QUEUE_DATA)
+			qi->tqi_intFlags = ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS;
+		break;
+	default:
+		break;
+	}
+
+	return true;
+}
+
+bool ath9k_hw_get_txq_props(struct ath_hw *ah, int q,
+			    struct ath9k_tx_queue_info *qinfo)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath9k_tx_queue_info *qi;
+
+	if (q >= pCap->total_queues) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Get TXQ properties, "
+			"invalid queue: %u\n", q);
+		return false;
+	}
+
+	qi = &ah->txq[q];
+	if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Get TXQ properties, "
+			"inactive queue: %u\n", q);
+		return false;
+	}
+
+	qinfo->tqi_qflags = qi->tqi_qflags;
+	qinfo->tqi_ver = qi->tqi_ver;
+	qinfo->tqi_subtype = qi->tqi_subtype;
+	qinfo->tqi_qflags = qi->tqi_qflags;
+	qinfo->tqi_priority = qi->tqi_priority;
+	qinfo->tqi_aifs = qi->tqi_aifs;
+	qinfo->tqi_cwmin = qi->tqi_cwmin;
+	qinfo->tqi_cwmax = qi->tqi_cwmax;
+	qinfo->tqi_shretry = qi->tqi_shretry;
+	qinfo->tqi_lgretry = qi->tqi_lgretry;
+	qinfo->tqi_cbrPeriod = qi->tqi_cbrPeriod;
+	qinfo->tqi_cbrOverflowLimit = qi->tqi_cbrOverflowLimit;
+	qinfo->tqi_burstTime = qi->tqi_burstTime;
+	qinfo->tqi_readyTime = qi->tqi_readyTime;
+
+	return true;
+}
+
+int ath9k_hw_setuptxqueue(struct ath_hw *ah, enum ath9k_tx_queue type,
+			  const struct ath9k_tx_queue_info *qinfo)
+{
+	struct ath9k_tx_queue_info *qi;
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	int q;
+
+	switch (type) {
+	case ATH9K_TX_QUEUE_BEACON:
+		q = pCap->total_queues - 1;
+		break;
+	case ATH9K_TX_QUEUE_CAB:
+		q = pCap->total_queues - 2;
+		break;
+	case ATH9K_TX_QUEUE_PSPOLL:
+		q = 1;
+		break;
+	case ATH9K_TX_QUEUE_UAPSD:
+		q = pCap->total_queues - 3;
+		break;
+	case ATH9K_TX_QUEUE_DATA:
+		for (q = 0; q < pCap->total_queues; q++)
+			if (ah->txq[q].tqi_type ==
+			    ATH9K_TX_QUEUE_INACTIVE)
+				break;
+		if (q == pCap->total_queues) {
+			DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
+				"No available TX queue\n");
+			return -1;
+		}
+		break;
+	default:
+		DPRINTF(ah->ah_sc, ATH_DBG_FATAL, "Invalid TX queue type: %u\n",
+			type);
+		return -1;
+	}
+
+	DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Setup TX queue: %u\n", q);
+
+	qi = &ah->txq[q];
+	if (qi->tqi_type != ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
+			"TX queue: %u already active\n", q);
+		return -1;
+	}
+	memset(qi, 0, sizeof(struct ath9k_tx_queue_info));
+	qi->tqi_type = type;
+	if (qinfo == NULL) {
+		qi->tqi_qflags =
+			TXQ_FLAG_TXOKINT_ENABLE
+			| TXQ_FLAG_TXERRINT_ENABLE
+			| TXQ_FLAG_TXDESCINT_ENABLE | TXQ_FLAG_TXURNINT_ENABLE;
+		qi->tqi_aifs = INIT_AIFS;
+		qi->tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
+		qi->tqi_cwmax = INIT_CWMAX;
+		qi->tqi_shretry = INIT_SH_RETRY;
+		qi->tqi_lgretry = INIT_LG_RETRY;
+		qi->tqi_physCompBuf = 0;
+	} else {
+		qi->tqi_physCompBuf = qinfo->tqi_physCompBuf;
+		(void) ath9k_hw_set_txq_props(ah, q, qinfo);
+	}
+
+	return q;
+}
+
+bool ath9k_hw_releasetxqueue(struct ath_hw *ah, u32 q)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath9k_tx_queue_info *qi;
+
+	if (q >= pCap->total_queues) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TXQ, "
+			"invalid queue: %u\n", q);
+		return false;
+	}
+	qi = &ah->txq[q];
+	if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TXQ, "
+			"inactive queue: %u\n", q);
+		return false;
+	}
+
+	DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Release TX queue: %u\n", q);
+
+	qi->tqi_type = ATH9K_TX_QUEUE_INACTIVE;
+	ah->txok_interrupt_mask &= ~(1 << q);
+	ah->txerr_interrupt_mask &= ~(1 << q);
+	ah->txdesc_interrupt_mask &= ~(1 << q);
+	ah->txeol_interrupt_mask &= ~(1 << q);
+	ah->txurn_interrupt_mask &= ~(1 << q);
+	ath9k_hw_set_txq_interrupts(ah, qi);
+
+	return true;
+}
+
+bool ath9k_hw_resettxqueue(struct ath_hw *ah, u32 q)
+{
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+	struct ath9k_channel *chan = ah->curchan;
+	struct ath9k_tx_queue_info *qi;
+	u32 cwMin, chanCwMin, value;
+
+	if (q >= pCap->total_queues) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TXQ, "
+			"invalid queue: %u\n", q);
+		return false;
+	}
+
+	qi = &ah->txq[q];
+	if (qi->tqi_type == ATH9K_TX_QUEUE_INACTIVE) {
+		DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TXQ, "
+			"inactive queue: %u\n", q);
+		return true;
+	}
+
+	DPRINTF(ah->ah_sc, ATH_DBG_QUEUE, "Reset TX queue: %u\n", q);
+
+	if (qi->tqi_cwmin == ATH9K_TXQ_USEDEFAULT) {
+		if (chan && IS_CHAN_B(chan))
+			chanCwMin = INIT_CWMIN_11B;
+		else
+			chanCwMin = INIT_CWMIN;
+
+		for (cwMin = 1; cwMin < chanCwMin; cwMin = (cwMin << 1) | 1);
+	} else
+		cwMin = qi->tqi_cwmin;
+
+	REG_WRITE(ah, AR_DLCL_IFS(q),
+		  SM(cwMin, AR_D_LCL_IFS_CWMIN) |
+		  SM(qi->tqi_cwmax, AR_D_LCL_IFS_CWMAX) |
+		  SM(qi->tqi_aifs, AR_D_LCL_IFS_AIFS));
+
+	REG_WRITE(ah, AR_DRETRY_LIMIT(q),
+		  SM(INIT_SSH_RETRY, AR_D_RETRY_LIMIT_STA_SH) |
+		  SM(INIT_SLG_RETRY, AR_D_RETRY_LIMIT_STA_LG) |
+		  SM(qi->tqi_shretry, AR_D_RETRY_LIMIT_FR_SH));
+
+	REG_WRITE(ah, AR_QMISC(q), AR_Q_MISC_DCU_EARLY_TERM_REQ);
+	REG_WRITE(ah, AR_DMISC(q),
+		  AR_D_MISC_CW_BKOFF_EN | AR_D_MISC_FRAG_WAIT_EN | 0x2);
+
+	if (qi->tqi_cbrPeriod) {
+		REG_WRITE(ah, AR_QCBRCFG(q),
+			  SM(qi->tqi_cbrPeriod, AR_Q_CBRCFG_INTERVAL) |
+			  SM(qi->tqi_cbrOverflowLimit, AR_Q_CBRCFG_OVF_THRESH));
+		REG_WRITE(ah, AR_QMISC(q),
+			  REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_FSP_CBR |
+			  (qi->tqi_cbrOverflowLimit ?
+			   AR_Q_MISC_CBR_EXP_CNTR_LIMIT_EN : 0));
+	}
+	if (qi->tqi_readyTime && (qi->tqi_type != ATH9K_TX_QUEUE_CAB)) {
+		REG_WRITE(ah, AR_QRDYTIMECFG(q),
+			  SM(qi->tqi_readyTime, AR_Q_RDYTIMECFG_DURATION) |
+			  AR_Q_RDYTIMECFG_EN);
+	}
+
+	REG_WRITE(ah, AR_DCHNTIME(q),
+		  SM(qi->tqi_burstTime, AR_D_CHNTIME_DUR) |
+		  (qi->tqi_burstTime ? AR_D_CHNTIME_EN : 0));
+
+	if (qi->tqi_burstTime
+	    && (qi->tqi_qflags & TXQ_FLAG_RDYTIME_EXP_POLICY_ENABLE)) {
+		REG_WRITE(ah, AR_QMISC(q),
+			  REG_READ(ah, AR_QMISC(q)) |
+			  AR_Q_MISC_RDYTIME_EXP_POLICY);
+
+	}
+
+	if (qi->tqi_qflags & TXQ_FLAG_BACKOFF_DISABLE) {
+		REG_WRITE(ah, AR_DMISC(q),
+			  REG_READ(ah, AR_DMISC(q)) |
+			  AR_D_MISC_POST_FR_BKOFF_DIS);
+	}
+	if (qi->tqi_qflags & TXQ_FLAG_FRAG_BURST_BACKOFF_ENABLE) {
+		REG_WRITE(ah, AR_DMISC(q),
+			  REG_READ(ah, AR_DMISC(q)) |
+			  AR_D_MISC_FRAG_BKOFF_EN);
+	}
+	switch (qi->tqi_type) {
+	case ATH9K_TX_QUEUE_BEACON:
+		REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
+			  | AR_Q_MISC_FSP_DBA_GATED
+			  | AR_Q_MISC_BEACON_USE
+			  | AR_Q_MISC_CBR_INCR_DIS1);
+
+		REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
+			  | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
+			     AR_D_MISC_ARB_LOCKOUT_CNTRL_S)
+			  | AR_D_MISC_BEACON_USE
+			  | AR_D_MISC_POST_FR_BKOFF_DIS);
+		break;
+	case ATH9K_TX_QUEUE_CAB:
+		REG_WRITE(ah, AR_QMISC(q), REG_READ(ah, AR_QMISC(q))
+			  | AR_Q_MISC_FSP_DBA_GATED
+			  | AR_Q_MISC_CBR_INCR_DIS1
+			  | AR_Q_MISC_CBR_INCR_DIS0);
+		value = (qi->tqi_readyTime -
+			 (ah->config.sw_beacon_response_time -
+			  ah->config.dma_beacon_response_time) -
+			 ah->config.additional_swba_backoff) * 1024;
+		REG_WRITE(ah, AR_QRDYTIMECFG(q),
+			  value | AR_Q_RDYTIMECFG_EN);
+		REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q))
+			  | (AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL <<
+			     AR_D_MISC_ARB_LOCKOUT_CNTRL_S));
+		break;
+	case ATH9K_TX_QUEUE_PSPOLL:
+		REG_WRITE(ah, AR_QMISC(q),
+			  REG_READ(ah, AR_QMISC(q)) | AR_Q_MISC_CBR_INCR_DIS1);
+		break;
+	case ATH9K_TX_QUEUE_UAPSD:
+		REG_WRITE(ah, AR_DMISC(q), REG_READ(ah, AR_DMISC(q)) |
+			  AR_D_MISC_POST_FR_BKOFF_DIS);
+		break;
+	default:
+		break;
+	}
+
+	if (qi->tqi_intFlags & ATH9K_TXQ_USE_LOCKOUT_BKOFF_DIS) {
+		REG_WRITE(ah, AR_DMISC(q),
+			  REG_READ(ah, AR_DMISC(q)) |
+			  SM(AR_D_MISC_ARB_LOCKOUT_CNTRL_GLOBAL,
+			     AR_D_MISC_ARB_LOCKOUT_CNTRL) |
+			  AR_D_MISC_POST_FR_BKOFF_DIS);
+	}
+
+	if (qi->tqi_qflags & TXQ_FLAG_TXOKINT_ENABLE)
+		ah->txok_interrupt_mask |= 1 << q;
+	else
+		ah->txok_interrupt_mask &= ~(1 << q);
+	if (qi->tqi_qflags & TXQ_FLAG_TXERRINT_ENABLE)
+		ah->txerr_interrupt_mask |= 1 << q;
+	else
+		ah->txerr_interrupt_mask &= ~(1 << q);
+	if (qi->tqi_qflags & TXQ_FLAG_TXDESCINT_ENABLE)
+		ah->txdesc_interrupt_mask |= 1 << q;
+	else
+		ah->txdesc_interrupt_mask &= ~(1 << q);
+	if (qi->tqi_qflags & TXQ_FLAG_TXEOLINT_ENABLE)
+		ah->txeol_interrupt_mask |= 1 << q;
+	else
+		ah->txeol_interrupt_mask &= ~(1 << q);
+	if (qi->tqi_qflags & TXQ_FLAG_TXURNINT_ENABLE)
+		ah->txurn_interrupt_mask |= 1 << q;
+	else
+		ah->txurn_interrupt_mask &= ~(1 << q);
+	ath9k_hw_set_txq_interrupts(ah, qi);
+
+	return true;
+}
+
+int ath9k_hw_rxprocdesc(struct ath_hw *ah, struct ath_desc *ds,
+			u32 pa, struct ath_desc *nds, u64 tsf)
+{
+	struct ar5416_desc ads;
+	struct ar5416_desc *adsp = AR5416DESC(ds);
+	u32 phyerr;
+
+	if ((adsp->ds_rxstatus8 & AR_RxDone) == 0)
+		return -EINPROGRESS;
+
+	ads.u.rx = adsp->u.rx;
+
+	ds->ds_rxstat.rs_status = 0;
+	ds->ds_rxstat.rs_flags = 0;
+
+	ds->ds_rxstat.rs_datalen = ads.ds_rxstatus1 & AR_DataLen;
+	ds->ds_rxstat.rs_tstamp = ads.AR_RcvTimestamp;
+
+	ds->ds_rxstat.rs_rssi = MS(ads.ds_rxstatus4, AR_RxRSSICombined);
+	ds->ds_rxstat.rs_rssi_ctl0 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt00);
+	ds->ds_rxstat.rs_rssi_ctl1 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt01);
+	ds->ds_rxstat.rs_rssi_ctl2 = MS(ads.ds_rxstatus0, AR_RxRSSIAnt02);
+	ds->ds_rxstat.rs_rssi_ext0 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt10);
+	ds->ds_rxstat.rs_rssi_ext1 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt11);
+	ds->ds_rxstat.rs_rssi_ext2 = MS(ads.ds_rxstatus4, AR_RxRSSIAnt12);
+	if (ads.ds_rxstatus8 & AR_RxKeyIdxValid)
+		ds->ds_rxstat.rs_keyix = MS(ads.ds_rxstatus8, AR_KeyIdx);
+	else
+		ds->ds_rxstat.rs_keyix = ATH9K_RXKEYIX_INVALID;
+
+	ds->ds_rxstat.rs_rate = RXSTATUS_RATE(ah, (&ads));
+	ds->ds_rxstat.rs_more = (ads.ds_rxstatus1 & AR_RxMore) ? 1 : 0;
+
+	ds->ds_rxstat.rs_isaggr = (ads.ds_rxstatus8 & AR_RxAggr) ? 1 : 0;
+	ds->ds_rxstat.rs_moreaggr =
+		(ads.ds_rxstatus8 & AR_RxMoreAggr) ? 1 : 0;
+	ds->ds_rxstat.rs_antenna = MS(ads.ds_rxstatus3, AR_RxAntenna);
+	ds->ds_rxstat.rs_flags =
+		(ads.ds_rxstatus3 & AR_GI) ? ATH9K_RX_GI : 0;
+	ds->ds_rxstat.rs_flags |=
+		(ads.ds_rxstatus3 & AR_2040) ? ATH9K_RX_2040 : 0;
+
+	if (ads.ds_rxstatus8 & AR_PreDelimCRCErr)
+		ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
+	if (ads.ds_rxstatus8 & AR_PostDelimCRCErr)
+		ds->ds_rxstat.rs_flags |= ATH9K_RX_DELIM_CRC_POST;
+	if (ads.ds_rxstatus8 & AR_DecryptBusyErr)
+		ds->ds_rxstat.rs_flags |= ATH9K_RX_DECRYPT_BUSY;
+
+	if ((ads.ds_rxstatus8 & AR_RxFrameOK) == 0) {
+		if (ads.ds_rxstatus8 & AR_CRCErr)
+			ds->ds_rxstat.rs_status |= ATH9K_RXERR_CRC;
+		else if (ads.ds_rxstatus8 & AR_PHYErr) {
+			ds->ds_rxstat.rs_status |= ATH9K_RXERR_PHY;
+			phyerr = MS(ads.ds_rxstatus8, AR_PHYErrCode);
+			ds->ds_rxstat.rs_phyerr = phyerr;
+		} else if (ads.ds_rxstatus8 & AR_DecryptCRCErr)
+			ds->ds_rxstat.rs_status |= ATH9K_RXERR_DECRYPT;
+		else if (ads.ds_rxstatus8 & AR_MichaelErr)
+			ds->ds_rxstat.rs_status |= ATH9K_RXERR_MIC;
+	}
+
+	return 0;
+}
+
+bool ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
+			  u32 size, u32 flags)
+{
+	struct ar5416_desc *ads = AR5416DESC(ds);
+	struct ath9k_hw_capabilities *pCap = &ah->caps;
+
+	ads->ds_ctl1 = size & AR_BufLen;
+	if (flags & ATH9K_RXDESC_INTREQ)
+		ads->ds_ctl1 |= AR_RxIntrReq;
+
+	ads->ds_rxstatus8 &= ~AR_RxDone;
+	if (!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
+		memset(&(ads->u), 0, sizeof(ads->u));
+
+	return true;
+}
+
+bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set)
+{
+	u32 reg;
+
+	if (set) {
+		REG_SET_BIT(ah, AR_DIAG_SW,
+			    (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
+
+		if (!ath9k_hw_wait(ah, AR_OBS_BUS_1, AR_OBS_BUS_1_RX_STATE,
+				   0, AH_WAIT_TIMEOUT)) {
+			REG_CLR_BIT(ah, AR_DIAG_SW,
+				    (AR_DIAG_RX_DIS |
+				     AR_DIAG_RX_ABORT));
+
+			reg = REG_READ(ah, AR_OBS_BUS_1);
+			DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
+				"RX failed to go idle in 10 ms RXSM=0x%x\n", reg);
+
+			return false;
+		}
+	} else {
+		REG_CLR_BIT(ah, AR_DIAG_SW,
+			    (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
+	}
+
+	return true;
+}
+
+void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp)
+{
+	REG_WRITE(ah, AR_RXDP, rxdp);
+}
+
+void ath9k_hw_rxena(struct ath_hw *ah)
+{
+	REG_WRITE(ah, AR_CR, AR_CR_RXE);
+}
+
+void ath9k_hw_startpcureceive(struct ath_hw *ah)
+{
+	ath9k_enable_mib_counters(ah);
+
+	ath9k_ani_reset(ah);
+
+	REG_CLR_BIT(ah, AR_DIAG_SW, (AR_DIAG_RX_DIS | AR_DIAG_RX_ABORT));
+}
+
+void ath9k_hw_stoppcurecv(struct ath_hw *ah)
+{
+	REG_SET_BIT(ah, AR_DIAG_SW, AR_DIAG_RX_DIS);
+
+	ath9k_hw_disable_mib_counters(ah);
+}
+
+bool ath9k_hw_stopdmarecv(struct ath_hw *ah)
+{
+#define AH_RX_STOP_DMA_TIMEOUT 10000   /* usec */
+#define AH_RX_TIME_QUANTUM     100     /* usec */
+
+	int i;
+
+	REG_WRITE(ah, AR_CR, AR_CR_RXD);
+
+	/* Wait for rx enable bit to go low */
+	for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
+		if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
+			break;
+		udelay(AH_TIME_QUANTUM);
+	}
+
+	if (i == 0) {
+		DPRINTF(ah->ah_sc, ATH_DBG_FATAL,
+			"DMA failed to stop in %d ms "
+			"AR_CR=0x%08x AR_DIAG_SW=0x%08x\n",
+			AH_RX_STOP_DMA_TIMEOUT / 1000,
+			REG_READ(ah, AR_CR),
+			REG_READ(ah, AR_DIAG_SW));
+		return false;
+	} else {
+		return true;
+	}
+
+#undef AH_RX_TIME_QUANTUM
+#undef AH_RX_STOP_DMA_TIMEOUT
+}