drivers/net/wireless/ath/ath9k/ar9002_mac.c - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2008-2011 Atheros Communications Inc.
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
  * copyright notice and this permission notice appear in all copies.
  *
  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */

 #include "hw.h"
 #include <linux/export.h>

 #define AR_BufLen           0x00000fff

 static void ar9002_hw_rx_enable(struct ath_hw *ah)
 {
 	REG_WRITE(ah, AR_CR, AR_CR_RXE);
 }

 static void ar9002_hw_set_desc_link(void *ds, u32 ds_link)
 {
 	((struct ath_desc*) ds)->ds_link = ds_link;
 }

 static bool ar9002_hw_get_isr(struct ath_hw *ah, enum ath9k_int *masked)
 {
 	u32 isr = 0;
 	u32 mask2 = 0;
 	struct ath9k_hw_capabilities *pCap = &ah->caps;
 	u32 sync_cause = 0;
 	bool fatal_int = false;
 	struct ath_common *common = ath9k_hw_common(ah);

 	if (!AR_SREV_9100(ah)) {
 		if (REG_READ(ah, AR_INTR_ASYNC_CAUSE) & AR_INTR_MAC_IRQ) {
 			if ((REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M)
 			    == AR_RTC_STATUS_ON) {
 				isr = REG_READ(ah, AR_ISR);
 			}
 		}

 		sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) &
 			AR_INTR_SYNC_DEFAULT;

 		*masked = 0;

 		if (!isr && !sync_cause)
 			return false;
 	} else {
 		*masked = 0;
 		isr = REG_READ(ah, AR_ISR);
 	}

 	if (isr) {
 		if (isr & AR_ISR_BCNMISC) {
 			u32 isr2;
 			isr2 = REG_READ(ah, AR_ISR_S2);
 			if (isr2 & AR_ISR_S2_TIM)
 				mask2 |= ATH9K_INT_TIM;
 			if (isr2 & AR_ISR_S2_DTIM)
 				mask2 |= ATH9K_INT_DTIM;
 			if (isr2 & AR_ISR_S2_DTIMSYNC)
 				mask2 |= ATH9K_INT_DTIMSYNC;
 			if (isr2 & (AR_ISR_S2_CABEND))
 				mask2 |= ATH9K_INT_CABEND;
 			if (isr2 & AR_ISR_S2_GTT)
 				mask2 |= ATH9K_INT_GTT;
 			if (isr2 & AR_ISR_S2_CST)
 				mask2 |= ATH9K_INT_CST;
 			if (isr2 & AR_ISR_S2_TSFOOR)
 				mask2 |= ATH9K_INT_TSFOOR;
 		}

 		isr = REG_READ(ah, AR_ISR_RAC);
 		if (isr == 0xffffffff) {
 			*masked = 0;
 			return false;
 		}

 		*masked = isr & ATH9K_INT_COMMON;

 		if (isr & (AR_ISR_RXMINTR | AR_ISR_RXINTM |
 			   AR_ISR_RXOK | AR_ISR_RXERR))
 			*masked |= ATH9K_INT_RX;

 		if (isr &
 		    (AR_ISR_TXOK | AR_ISR_TXDESC | AR_ISR_TXERR |
 		     AR_ISR_TXEOL)) {
 			u32 s0_s, s1_s;

 			*masked |= ATH9K_INT_TX;

 			s0_s = REG_READ(ah, AR_ISR_S0_S);
 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXOK);
 			ah->intr_txqs |= MS(s0_s, AR_ISR_S0_QCU_TXDESC);

 			s1_s = REG_READ(ah, AR_ISR_S1_S);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXERR);
 			ah->intr_txqs |= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
 		}

 		if (isr & AR_ISR_RXORN) {
 			ath_dbg(common, INTERRUPT,
 				"receive FIFO overrun interrupt\n");
 		}

 		*masked |= mask2;
 	}

 	if (AR_SREV_9100(ah))
 		return true;

 	if (isr & AR_ISR_GENTMR) {
 		u32 s5_s;

 		s5_s = REG_READ(ah, AR_ISR_S5_S);
 		ah->intr_gen_timer_trigger =
 				MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);

 		ah->intr_gen_timer_thresh =
 			MS(s5_s, AR_ISR_S5_GENTIMER_THRESH);

 		if (ah->intr_gen_timer_trigger)
 			*masked |= ATH9K_INT_GENTIMER;

 		if ((s5_s & AR_ISR_S5_TIM_TIMER) &&
 		    !(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
 			*masked |= ATH9K_INT_TIM_TIMER;
 	}

 	if (sync_cause) {
 		ath9k_debug_sync_cause(common, sync_cause);
 		fatal_int =
 			(sync_cause &
 			 (AR_INTR_SYNC_HOST1_FATAL | AR_INTR_SYNC_HOST1_PERR))
 			? true : false;

 		if (fatal_int) {
 			if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) {
 				ath_dbg(common, ANY,
 					"received PCI FATAL interrupt\n");
 			}
 			if (sync_cause & AR_INTR_SYNC_HOST1_PERR) {
 				ath_dbg(common, ANY,
 					"received PCI PERR interrupt\n");
 			}
 			*masked |= ATH9K_INT_FATAL;
 		}
 		if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) {
 			ath_dbg(common, INTERRUPT,
 				"AR_INTR_SYNC_RADM_CPL_TIMEOUT\n");
 			REG_WRITE(ah, AR_RC, AR_RC_HOSTIF);
 			REG_WRITE(ah, AR_RC, 0);
 			*masked |= ATH9K_INT_FATAL;
 		}
 		if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) {
 			ath_dbg(common, INTERRUPT,
 				"AR_INTR_SYNC_LOCAL_TIMEOUT\n");
 		}

 		REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR, sync_cause);
 		(void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR);
 	}

 	return true;
 }

 static void
 ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
 {
 	struct ar5416_desc *ads = AR5416DESC(ds);
 	u32 ctl1, ctl6;

 	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;

 	ACCESS_ONCE(ads->ds_link) = i->link;
 	ACCESS_ONCE(ads->ds_data) = i->buf_addr[0];

 	ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore);
 	ctl6 = SM(i->keytype, AR_EncrType);

 	if (AR_SREV_9285(ah)) {
 		ads->ds_ctl8 = 0;
 		ads->ds_ctl9 = 0;
 		ads->ds_ctl10 = 0;
 		ads->ds_ctl11 = 0;
 	}

 	if ((i->is_first || i->is_last) &&
 	    i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) {
 		ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0)
 			| set11nTries(i->rates, 1)
 			| set11nTries(i->rates, 2)
 			| set11nTries(i->rates, 3)
 			| (i->dur_update ? AR_DurUpdateEna : 0)
 			| SM(0, AR_BurstDur);

 		ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0)
 			| set11nRate(i->rates, 1)
 			| set11nRate(i->rates, 2)
 			| set11nRate(i->rates, 3);
 	} else {
 		ACCESS_ONCE(ads->ds_ctl2) = 0;
 		ACCESS_ONCE(ads->ds_ctl3) = 0;
 	}

 	if (!i->is_first) {
 		ACCESS_ONCE(ads->ds_ctl0) = 0;
 		ACCESS_ONCE(ads->ds_ctl1) = ctl1;
 		ACCESS_ONCE(ads->ds_ctl6) = ctl6;
 		return;
 	}

 	ctl1 |= (i->keyix != ATH9K_TXKEYIX_INVALID ? SM(i->keyix, AR_DestIdx) : 0)
 		| SM(i->type, AR_FrameType)
 		| (i->flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0)
 		| (i->flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
 		| (i->flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);

 	switch (i->aggr) {
 	case AGGR_BUF_FIRST:
 		ctl6 |= SM(i->aggr_len, AR_AggrLen);
 		/* fall through */
 	case AGGR_BUF_MIDDLE:
 		ctl1 |= AR_IsAggr | AR_MoreAggr;
 		ctl6 |= SM(i->ndelim, AR_PadDelim);
 		break;
 	case AGGR_BUF_LAST:
 		ctl1 |= AR_IsAggr;
 		break;
 	case AGGR_BUF_NONE:
 		break;
 	}

 	ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
 		| (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
 		| SM(i->txpower, AR_XmitPower)
 		| (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
 		| (i->flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
 		| (i->keyix != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0)
 		| (i->flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
 		| (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable :
 		   (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0));

 	ACCESS_ONCE(ads->ds_ctl1) = ctl1;
 	ACCESS_ONCE(ads->ds_ctl6) = ctl6;

 	if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST)
 		return;

 	ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
 		| set11nPktDurRTSCTS(i->rates, 1);

 	ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
 		| set11nPktDurRTSCTS(i->rates, 3);

 	ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
 		| set11nRateFlags(i->rates, 1)
 		| set11nRateFlags(i->rates, 2)
 		| set11nRateFlags(i->rates, 3)
 		| SM(i->rtscts_rate, AR_RTSCTSRate);
 }

 static int ar9002_hw_proc_txdesc(struct ath_hw *ah, void *ds,
 				 struct ath_tx_status *ts)
 {
 	struct ar5416_desc *ads = AR5416DESC(ds);
 	u32 status;

 	status = ACCESS_ONCE(ads->ds_txstatus9);
 	if ((status & AR_TxDone) == 0)
 		return -EINPROGRESS;

 	ts->ts_tstamp = ads->AR_SendTimestamp;
 	ts->ts_status = 0;
 	ts->ts_flags = 0;

 	if (status & AR_TxOpExceeded)
 		ts->ts_status |= ATH9K_TXERR_XTXOP;
 	ts->tid = MS(status, AR_TxTid);
 	ts->ts_rateindex = MS(status, AR_FinalTxIdx);
 	ts->ts_seqnum = MS(status, AR_SeqNum);

 	status = ACCESS_ONCE(ads->ds_txstatus0);
 	ts->ts_rssi_ctl0 = MS(status, AR_TxRSSIAnt00);
 	ts->ts_rssi_ctl1 = MS(status, AR_TxRSSIAnt01);
 	ts->ts_rssi_ctl2 = MS(status, AR_TxRSSIAnt02);
 	if (status & AR_TxBaStatus) {
 		ts->ts_flags |= ATH9K_TX_BA;
 		ts->ba_low = ads->AR_BaBitmapLow;
 		ts->ba_high = ads->AR_BaBitmapHigh;
 	}

 	status = ACCESS_ONCE(ads->ds_txstatus1);
 	if (status & AR_FrmXmitOK)
 		ts->ts_status |= ATH9K_TX_ACKED;
 	else {
 		if (status & AR_ExcessiveRetries)
 			ts->ts_status |= ATH9K_TXERR_XRETRY;
 		if (status & AR_Filtered)
 			ts->ts_status |= ATH9K_TXERR_FILT;
 		if (status & AR_FIFOUnderrun) {
 			ts->ts_status |= ATH9K_TXERR_FIFO;
 			ath9k_hw_updatetxtriglevel(ah, true);
 		}
 	}
 	if (status & AR_TxTimerExpired)
 		ts->ts_status |= ATH9K_TXERR_TIMER_EXPIRED;
 	if (status & AR_DescCfgErr)
 		ts->ts_flags |= ATH9K_TX_DESC_CFG_ERR;
 	if (status & AR_TxDataUnderrun) {
 		ts->ts_flags |= ATH9K_TX_DATA_UNDERRUN;
 		ath9k_hw_updatetxtriglevel(ah, true);
 	}
 	if (status & AR_TxDelimUnderrun) {
 		ts->ts_flags |= ATH9K_TX_DELIM_UNDERRUN;
 		ath9k_hw_updatetxtriglevel(ah, true);
 	}
 	ts->ts_shortretry = MS(status, AR_RTSFailCnt);
 	ts->ts_longretry = MS(status, AR_DataFailCnt);
 	ts->ts_virtcol = MS(status, AR_VirtRetryCnt);

 	status = ACCESS_ONCE(ads->ds_txstatus5);
 	ts->ts_rssi = MS(status, AR_TxRSSICombined);
 	ts->ts_rssi_ext0 = MS(status, AR_TxRSSIAnt10);
 	ts->ts_rssi_ext1 = MS(status, AR_TxRSSIAnt11);
 	ts->ts_rssi_ext2 = MS(status, AR_TxRSSIAnt12);

 	ts->evm0 = ads->AR_TxEVM0;
 	ts->evm1 = ads->AR_TxEVM1;
 	ts->evm2 = ads->AR_TxEVM2;

 	return 0;
 }

 void ath9k_hw_setuprxdesc(struct ath_hw *ah, struct ath_desc *ds,
 			  u32 size, u32 flags)
 {
 	struct ar5416_desc *ads = AR5416DESC(ds);

 	ads->ds_ctl1 = size & AR_BufLen;
 	if (flags & ATH9K_RXDESC_INTREQ)
 		ads->ds_ctl1 |= AR_RxIntrReq;

 	memset(&ads->u.rx, 0, sizeof(ads->u.rx));
 }
 EXPORT_SYMBOL(ath9k_hw_setuprxdesc);

 void ar9002_hw_attach_mac_ops(struct ath_hw *ah)
 {
 	struct ath_hw_ops *ops = ath9k_hw_ops(ah);

 	ops->rx_enable = ar9002_hw_rx_enable;
 	ops->set_desc_link = ar9002_hw_set_desc_link;
 	ops->get_isr = ar9002_hw_get_isr;
 	ops->set_txdesc = ar9002_set_txdesc;
 	ops->proc_txdesc = ar9002_hw_proc_txdesc;
 }
	/*
	* Copyright (c) 2008-2011 Atheros Communications Inc.
	*
	* Permission to use, copy, modify, and/or distribute this software for any
	* purpose with or without fee is hereby granted, provided that the above
	* copyright notice and this permission notice appear in all copies.
	*
	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
	*/

	#include "hw.h"
	#include <linux/export.h>

	#define AR_BufLen 0x00000fff

	static void ar9002_hw_rx_enable(struct ath_hw *ah)
	{
	REG_WRITE(ah, AR_CR, AR_CR_RXE);
	}

	static void ar9002_hw_set_desc_link(void *ds, u32 ds_link)
	{
	((struct ath_desc*) ds)->ds_link = ds_link;
	}

	static bool ar9002_hw_get_isr(struct ath_hw ah, enum ath9k_int masked)
	{
	u32 isr = 0;
	u32 mask2 = 0;
	struct ath9k_hw_capabilities *pCap = &ah->caps;
	u32 sync_cause = 0;
	bool fatal_int = false;
	struct ath_common *common = ath9k_hw_common(ah);

	if (!AR_SREV_9100(ah)) {
	if (REG_READ(ah, AR_INTR_ASYNC_CAUSE) & AR_INTR_MAC_IRQ) {
	if ((REG_READ(ah, AR_RTC_STATUS) & AR_RTC_STATUS_M)
	== AR_RTC_STATUS_ON) {
	isr = REG_READ(ah, AR_ISR);
	}
	}

	sync_cause = REG_READ(ah, AR_INTR_SYNC_CAUSE) &
	AR_INTR_SYNC_DEFAULT;

	*masked = 0;

	if (!isr && !sync_cause)
	return false;
	} else {
	*masked = 0;
	isr = REG_READ(ah, AR_ISR);
	}

	if (isr) {
	if (isr & AR_ISR_BCNMISC) {
	u32 isr2;
	isr2 = REG_READ(ah, AR_ISR_S2);
	if (isr2 & AR_ISR_S2_TIM)
	mask2 \|= ATH9K_INT_TIM;
	if (isr2 & AR_ISR_S2_DTIM)
	mask2 \|= ATH9K_INT_DTIM;
	if (isr2 & AR_ISR_S2_DTIMSYNC)
	mask2 \|= ATH9K_INT_DTIMSYNC;
	if (isr2 & (AR_ISR_S2_CABEND))
	mask2 \|= ATH9K_INT_CABEND;
	if (isr2 & AR_ISR_S2_GTT)
	mask2 \|= ATH9K_INT_GTT;
	if (isr2 & AR_ISR_S2_CST)
	mask2 \|= ATH9K_INT_CST;
	if (isr2 & AR_ISR_S2_TSFOOR)
	mask2 \|= ATH9K_INT_TSFOOR;
	}

	isr = REG_READ(ah, AR_ISR_RAC);
	if (isr == 0xffffffff) {
	*masked = 0;
	return false;
	}

	*masked = isr & ATH9K_INT_COMMON;

	if (isr & (AR_ISR_RXMINTR \| AR_ISR_RXINTM \|
	AR_ISR_RXOK \| AR_ISR_RXERR))
	*masked \|= ATH9K_INT_RX;

	if (isr &
	(AR_ISR_TXOK \| AR_ISR_TXDESC \| AR_ISR_TXERR \|
	AR_ISR_TXEOL)) {
	u32 s0_s, s1_s;

	*masked \|= ATH9K_INT_TX;

	s0_s = REG_READ(ah, AR_ISR_S0_S);
	ah->intr_txqs \|= MS(s0_s, AR_ISR_S0_QCU_TXOK);
	ah->intr_txqs \|= MS(s0_s, AR_ISR_S0_QCU_TXDESC);

	s1_s = REG_READ(ah, AR_ISR_S1_S);
	ah->intr_txqs \|= MS(s1_s, AR_ISR_S1_QCU_TXERR);
	ah->intr_txqs \|= MS(s1_s, AR_ISR_S1_QCU_TXEOL);
	}

	if (isr & AR_ISR_RXORN) {
	ath_dbg(common, INTERRUPT,
	"receive FIFO overrun interrupt\n");
	}

	*masked \|= mask2;
	}

	if (AR_SREV_9100(ah))
	return true;

	if (isr & AR_ISR_GENTMR) {
	u32 s5_s;

	s5_s = REG_READ(ah, AR_ISR_S5_S);
	ah->intr_gen_timer_trigger =
	MS(s5_s, AR_ISR_S5_GENTIMER_TRIG);

	ah->intr_gen_timer_thresh =
	MS(s5_s, AR_ISR_S5_GENTIMER_THRESH);

	if (ah->intr_gen_timer_trigger)
	*masked \|= ATH9K_INT_GENTIMER;

	if ((s5_s & AR_ISR_S5_TIM_TIMER) &&
	!(pCap->hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
	*masked \|= ATH9K_INT_TIM_TIMER;
	}

	if (sync_cause) {
	ath9k_debug_sync_cause(common, sync_cause);
	fatal_int =
	(sync_cause &
	(AR_INTR_SYNC_HOST1_FATAL \| AR_INTR_SYNC_HOST1_PERR))
	? true : false;

	if (fatal_int) {
	if (sync_cause & AR_INTR_SYNC_HOST1_FATAL) {
	ath_dbg(common, ANY,
	"received PCI FATAL interrupt\n");
	}
	if (sync_cause & AR_INTR_SYNC_HOST1_PERR) {
	ath_dbg(common, ANY,
	"received PCI PERR interrupt\n");
	}
	*masked \|= ATH9K_INT_FATAL;
	}
	if (sync_cause & AR_INTR_SYNC_RADM_CPL_TIMEOUT) {
	ath_dbg(common, INTERRUPT,
	"AR_INTR_SYNC_RADM_CPL_TIMEOUT\n");
	REG_WRITE(ah, AR_RC, AR_RC_HOSTIF);
	REG_WRITE(ah, AR_RC, 0);
	*masked \|= ATH9K_INT_FATAL;
	}
	if (sync_cause & AR_INTR_SYNC_LOCAL_TIMEOUT) {
	ath_dbg(common, INTERRUPT,
	"AR_INTR_SYNC_LOCAL_TIMEOUT\n");
	}

	REG_WRITE(ah, AR_INTR_SYNC_CAUSE_CLR, sync_cause);
	(void) REG_READ(ah, AR_INTR_SYNC_CAUSE_CLR);
	}

	return true;
	}

	static void
	ar9002_set_txdesc(struct ath_hw ah, void ds, struct ath_tx_info *i)
	{
	struct ar5416_desc *ads = AR5416DESC(ds);
	u32 ctl1, ctl6;

	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;

	ACCESS_ONCE(ads->ds_link) = i->link;
	ACCESS_ONCE(ads->ds_data) = i->buf_addr[0];

	ctl1 = i->buf_len[0] \| (i->is_last ? 0 : AR_TxMore);
	ctl6 = SM(i->keytype, AR_EncrType);

	if (AR_SREV_9285(ah)) {
	ads->ds_ctl8 = 0;
	ads->ds_ctl9 = 0;
	ads->ds_ctl10 = 0;
	ads->ds_ctl11 = 0;
	}

	if ((i->is_first \|\| i->is_last) &&
	i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) {
	ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0)
	\| set11nTries(i->rates, 1)
	\| set11nTries(i->rates, 2)
	\| set11nTries(i->rates, 3)
	\| (i->dur_update ? AR_DurUpdateEna : 0)
	\| SM(0, AR_BurstDur);

	ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0)
	\| set11nRate(i->rates, 1)
	\| set11nRate(i->rates, 2)
	\| set11nRate(i->rates, 3);
	} else {
	ACCESS_ONCE(ads->ds_ctl2) = 0;
	ACCESS_ONCE(ads->ds_ctl3) = 0;
	}

	if (!i->is_first) {
	ACCESS_ONCE(ads->ds_ctl0) = 0;
	ACCESS_ONCE(ads->ds_ctl1) = ctl1;
	ACCESS_ONCE(ads->ds_ctl6) = ctl6;
	return;
	}

	ctl1 \|= (i->keyix != ATH9K_TXKEYIX_INVALID ? SM(i->keyix, AR_DestIdx) : 0)
	\| SM(i->type, AR_FrameType)
	\| (i->flags & ATH9K_TXDESC_NOACK ? AR_NoAck : 0)
	\| (i->flags & ATH9K_TXDESC_EXT_ONLY ? AR_ExtOnly : 0)
	\| (i->flags & ATH9K_TXDESC_EXT_AND_CTL ? AR_ExtAndCtl : 0);

	switch (i->aggr) {
	case AGGR_BUF_FIRST:
	ctl6 \|= SM(i->aggr_len, AR_AggrLen);
	/* fall through */
	case AGGR_BUF_MIDDLE:
	ctl1 \|= AR_IsAggr \| AR_MoreAggr;
	ctl6 \|= SM(i->ndelim, AR_PadDelim);
	break;
	case AGGR_BUF_LAST:
	ctl1 \|= AR_IsAggr;
	break;
	case AGGR_BUF_NONE:
	break;
	}

	ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
	\| (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
	\| SM(i->txpower, AR_XmitPower)
	\| (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
	\| (i->flags & ATH9K_TXDESC_INTREQ ? AR_TxIntrReq : 0)
	\| (i->keyix != ATH9K_TXKEYIX_INVALID ? AR_DestIdxValid : 0)
	\| (i->flags & ATH9K_TXDESC_CLRDMASK ? AR_ClrDestMask : 0)
	\| (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable :
	(i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0));

	ACCESS_ONCE(ads->ds_ctl1) = ctl1;
	ACCESS_ONCE(ads->ds_ctl6) = ctl6;

	if (i->aggr == AGGR_BUF_MIDDLE \|\| i->aggr == AGGR_BUF_LAST)
	return;

	ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
	\| set11nPktDurRTSCTS(i->rates, 1);

	ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
	\| set11nPktDurRTSCTS(i->rates, 3);

	ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
	\| set11nRateFlags(i->rates, 1)
	\| set11nRateFlags(i->rates, 2)
	\| set11nRateFlags(i->rates, 3)
	\| SM(i->rtscts_rate, AR_RTSCTSRate);
	}

	static int ar9002_hw_proc_txdesc(struct ath_hw ah, void ds,
	struct ath_tx_status *ts)
	{
	struct ar5416_desc *ads = AR5416DESC(ds);
	u32 status;

	status = ACCESS_ONCE(ads->ds_txstatus9);
	if ((status & AR_TxDone) == 0)
	return -EINPROGRESS;

	ts->ts_tstamp = ads->AR_SendTimestamp;
	ts->ts_status = 0;
	ts->ts_flags = 0;

	if (status & AR_TxOpExceeded)
	ts->ts_status \|= ATH9K_TXERR_XTXOP;
	ts->tid = MS(status, AR_TxTid);
	ts->ts_rateindex = MS(status, AR_FinalTxIdx);
	ts->ts_seqnum = MS(status, AR_SeqNum);

	status = ACCESS_ONCE(ads->ds_txstatus0);
	ts->ts_rssi_ctl0 = MS(status, AR_TxRSSIAnt00);
	ts->ts_rssi_ctl1 = MS(status, AR_TxRSSIAnt01);
	ts->ts_rssi_ctl2 = MS(status, AR_TxRSSIAnt02);
	if (status & AR_TxBaStatus) {
	ts->ts_flags \|= ATH9K_TX_BA;
	ts->ba_low = ads->AR_BaBitmapLow;
	ts->ba_high = ads->AR_BaBitmapHigh;
	}

	status = ACCESS_ONCE(ads->ds_txstatus1);
	if (status & AR_FrmXmitOK)
	ts->ts_status \|= ATH9K_TX_ACKED;
	else {
	if (status & AR_ExcessiveRetries)
	ts->ts_status \|= ATH9K_TXERR_XRETRY;
	if (status & AR_Filtered)
	ts->ts_status \|= ATH9K_TXERR_FILT;
	if (status & AR_FIFOUnderrun) {
	ts->ts_status \|= ATH9K_TXERR_FIFO;
	ath9k_hw_updatetxtriglevel(ah, true);
	}
	}
	if (status & AR_TxTimerExpired)
	ts->ts_status \|= ATH9K_TXERR_TIMER_EXPIRED;
	if (status & AR_DescCfgErr)
	ts->ts_flags \|= ATH9K_TX_DESC_CFG_ERR;
	if (status & AR_TxDataUnderrun) {
	ts->ts_flags \|= ATH9K_TX_DATA_UNDERRUN;
	ath9k_hw_updatetxtriglevel(ah, true);
	}
	if (status & AR_TxDelimUnderrun) {
	ts->ts_flags \|= ATH9K_TX_DELIM_UNDERRUN;
	ath9k_hw_updatetxtriglevel(ah, true);
	}
	ts->ts_shortretry = MS(status, AR_RTSFailCnt);
	ts->ts_longretry = MS(status, AR_DataFailCnt);
	ts->ts_virtcol = MS(status, AR_VirtRetryCnt);

	status = ACCESS_ONCE(ads->ds_txstatus5);
	ts->ts_rssi = MS(status, AR_TxRSSICombined);
	ts->ts_rssi_ext0 = MS(status, AR_TxRSSIAnt10);
	ts->ts_rssi_ext1 = MS(status, AR_TxRSSIAnt11);
	ts->ts_rssi_ext2 = MS(status, AR_TxRSSIAnt12);

	ts->evm0 = ads->AR_TxEVM0;
	ts->evm1 = ads->AR_TxEVM1;
	ts->evm2 = ads->AR_TxEVM2;

	return 0;
	}

	void ath9k_hw_setuprxdesc(struct ath_hw ah, struct ath_desc ds,
	u32 size, u32 flags)
	{
	struct ar5416_desc *ads = AR5416DESC(ds);

	ads->ds_ctl1 = size & AR_BufLen;
	if (flags & ATH9K_RXDESC_INTREQ)
	ads->ds_ctl1 \|= AR_RxIntrReq;

	memset(&ads->u.rx, 0, sizeof(ads->u.rx));
	}
	EXPORT_SYMBOL(ath9k_hw_setuprxdesc);

	void ar9002_hw_attach_mac_ops(struct ath_hw *ah)
	{
	struct ath_hw_ops *ops = ath9k_hw_ops(ah);

	ops->rx_enable = ar9002_hw_rx_enable;
	ops->set_desc_link = ar9002_hw_set_desc_link;
	ops->get_isr = ar9002_hw_get_isr;
	ops->set_txdesc = ar9002_set_txdesc;
	ops->proc_txdesc = ar9002_hw_proc_txdesc;
	}