[PATCH v3 08/11] wifi: ath9k: implement QCN550x rx

[Wenli Looi <wlooi@ucalgary.ca>]

The rx status for this device has 2 additional status values.

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
---
 drivers/net/wireless/ath/ath9k/ar9003_mac.c | 47 +++++++++++++--------
 drivers/net/wireless/ath/ath9k/ar9003_mac.h |  6 +++
 drivers/net/wireless/ath/ath9k/hw.c         |  4 +-
 3 files changed, 38 insertions(+), 19 deletions(-)

diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
index a8bc003077..3d512916a2 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
@@ -481,10 +481,21 @@ EXPORT_SYMBOL(ath9k_hw_addrxbuf_edma);
 int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 				 void *buf_addr)
 {
-	struct ar9003_rxs *rxsp = buf_addr;
+	const struct qcn5502_rxs *qcn5502_rxsp = NULL;
+	const struct ar9003_rxs *rxsp = NULL;
 	unsigned int phyerr;
+	u32 last_status;
 
-	if ((rxsp->status11 & AR_RxDone) == 0)
+	if (AR_SREV_5502(ah)) {
+		qcn5502_rxsp = buf_addr;
+		rxsp = &qcn5502_rxsp->ar9003_rxs;
+		last_status = qcn5502_rxsp->status13;
+	} else {
+		rxsp = buf_addr;
+		last_status = rxsp->status11;
+	}
+
+	if ((last_status & AR_RxDone) == 0)
 		return -EINPROGRESS;
 
 	if (MS(rxsp->ds_info, AR_DescId) != 0x168c)
@@ -510,17 +521,17 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 	rxs->rs_rssi_ext[1] = MS(rxsp->status5, AR_RxRSSIAnt11);
 	rxs->rs_rssi_ext[2] = MS(rxsp->status5, AR_RxRSSIAnt12);
 
-	if (rxsp->status11 & AR_RxKeyIdxValid)
-		rxs->rs_keyix = MS(rxsp->status11, AR_KeyIdx);
+	if (last_status & AR_RxKeyIdxValid)
+		rxs->rs_keyix = MS(last_status, AR_KeyIdx);
 	else
 		rxs->rs_keyix = ATH9K_RXKEYIX_INVALID;
 
 	rxs->rs_rate = MS(rxsp->status1, AR_RxRate);
 	rxs->rs_more = (rxsp->status2 & AR_RxMore) ? 1 : 0;
 
-	rxs->rs_firstaggr = (rxsp->status11 & AR_RxFirstAggr) ? 1 : 0;
-	rxs->rs_isaggr = (rxsp->status11 & AR_RxAggr) ? 1 : 0;
-	rxs->rs_moreaggr = (rxsp->status11 & AR_RxMoreAggr) ? 1 : 0;
+	rxs->rs_firstaggr = (last_status & AR_RxFirstAggr) ? 1 : 0;
+	rxs->rs_isaggr = (last_status & AR_RxAggr) ? 1 : 0;
+	rxs->rs_moreaggr = (last_status & AR_RxMoreAggr) ? 1 : 0;
 	rxs->rs_antenna = (MS(rxsp->status4, AR_RxAntenna) & 0x7);
 	rxs->enc_flags |= (rxsp->status4 & AR_GI) ? RX_ENC_FLAG_SHORT_GI : 0;
 	rxs->enc_flags |=
@@ -533,16 +544,16 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 	rxs->evm3 = rxsp->status9;
 	rxs->evm4 = (rxsp->status10 & 0xffff);
 
-	if (rxsp->status11 & AR_PreDelimCRCErr)
+	if (last_status & AR_PreDelimCRCErr)
 		rxs->rs_flags |= ATH9K_RX_DELIM_CRC_PRE;
 
-	if (rxsp->status11 & AR_PostDelimCRCErr)
+	if (last_status & AR_PostDelimCRCErr)
 		rxs->rs_flags |= ATH9K_RX_DELIM_CRC_POST;
 
-	if (rxsp->status11 & AR_DecryptBusyErr)
+	if (last_status & AR_DecryptBusyErr)
 		rxs->rs_flags |= ATH9K_RX_DECRYPT_BUSY;
 
-	if ((rxsp->status11 & AR_RxFrameOK) == 0) {
+	if ((last_status & AR_RxFrameOK) == 0) {
 		/*
 		 * AR_CRCErr will bet set to true if we're on the last
 		 * subframe and the AR_PostDelimCRCErr is caught.
@@ -551,14 +562,14 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 		 * possibly be reviewing the last subframe. AR_CRCErr
 		 * is the CRC of the actual data.
 		 */
-		if (rxsp->status11 & AR_CRCErr)
+		if (last_status & AR_CRCErr)
 			rxs->rs_status |= ATH9K_RXERR_CRC;
-		else if (rxsp->status11 & AR_DecryptCRCErr)
+		else if (last_status & AR_DecryptCRCErr)
 			rxs->rs_status |= ATH9K_RXERR_DECRYPT;
-		else if (rxsp->status11 & AR_MichaelErr)
+		else if (last_status & AR_MichaelErr)
 			rxs->rs_status |= ATH9K_RXERR_MIC;
-		if (rxsp->status11 & AR_PHYErr) {
-			phyerr = MS(rxsp->status11, AR_PHYErrCode);
+		if (last_status & AR_PHYErr) {
+			phyerr = MS(last_status, AR_PHYErrCode);
 			/*
 			 * If we reach a point here where AR_PostDelimCRCErr is
 			 * true it implies we're *not* on the last subframe. In
@@ -573,7 +584,7 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 			 * delimiter for an A-MPDU subframe (0x4E = 'N' ASCII).
 			 */
 			if ((phyerr == ATH9K_PHYERR_OFDM_RESTART) &&
-			    (rxsp->status11 & AR_PostDelimCRCErr)) {
+			    (last_status & AR_PostDelimCRCErr)) {
 				rxs->rs_phyerr = 0;
 			} else {
 				rxs->rs_status |= ATH9K_RXERR_PHY;
@@ -582,7 +593,7 @@ int ath9k_hw_process_rxdesc_edma(struct ath_hw *ah, struct ath_rx_status *rxs,
 		}
 	}
 
-	if (rxsp->status11 & AR_KeyMiss)
+	if (last_status & AR_KeyMiss)
 		rxs->rs_status |= ATH9K_RXERR_KEYMISS;
 
 	return 0;
diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.h b/drivers/net/wireless/ath/ath9k/ar9003_mac.h
index cbf60b090b..ec8f3fac67 100644
--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.h
+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.h
@@ -67,6 +67,12 @@ struct ar9003_rxs {
 	u32 status11;
 } __packed __aligned(4);
 
+struct qcn5502_rxs {
+	struct ar9003_rxs ar9003_rxs;
+	u32 status12;
+	u32 status13;
+} __packed __aligned(4);
+
 /* Transmit Control Descriptor */
 struct ar9003_txc {
 	u32 info;   /* descriptor information */
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index f572fca3e6..8d1dc77da0 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -2622,7 +2622,9 @@ int ath9k_hw_fill_cap_info(struct ath_hw *ah)
 
 		pCap->rx_hp_qdepth = ATH9K_HW_RX_HP_QDEPTH;
 		pCap->rx_lp_qdepth = ATH9K_HW_RX_LP_QDEPTH;
-		pCap->rx_status_len = sizeof(struct ar9003_rxs);
+		pCap->rx_status_len = AR_SREV_5502(ah) ?
+					      sizeof(struct qcn5502_rxs) :
+					      sizeof(struct ar9003_rxs);
 		pCap->tx_desc_len = sizeof(struct ar9003_txc);
 		pCap->txs_len = sizeof(struct ar9003_txs);
 	} else {
-- 
2.34.1