linux-kernel - [PATCH 10/11] staging: vt6655: Add missing BE support on 2x iowrite32

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Date:   Sun, 22 May 2022 21:49:28 +0200
From:   Philipp Hortmann <philipp.g.hortmann@...il.com>
To:     Forest Bond <forest@...ttletooquiet.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 10/11] staging: vt6655: Add missing BE support on 2x iowrite32

Add missing big-endian support when using two times iowrite32
to write 64 Bit.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@...il.com>
---
Code for testing:
dev_info(&priv->pcid->dev, "CARDbUpdateTSF little endian before con.: 0x%016llx", qwTSFOffset);
qwTSFOffset =  le64_to_cpu(qwTSFOffset);
dev_info(&priv->pcid->dev, "CARDbUpdateTSF little endian after con. : 0x%016llx", qwTSFOffset);
dev_info(&priv->pcid->dev, "CARDbUpdateTSF big endian:                0x%016llx", be64_to_cpu(qwTSFOffset));

Log
vt6655 0000:01:05.0: CARDbUpdateTSF little endian before con.: 0xff ff ff ff fd b7 d5 fc
vt6655 0000:01:05.0: CARDbUpdateTSF little endian after con. : 0xff ff ff ff fd b7 d5 fc
vt6655 0000:01:05.0: CARDbUpdateTSF big endian:                0xfc d5 b7 fd ff ff ff ff
---
 drivers/staging/vt6655/card.c        | 4 ++++
 drivers/staging/vt6655/device_main.c | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/staging/vt6655/card.c b/drivers/staging/vt6655/card.c
index 7a4a8b3f164e..abc74a5633c7 100644
--- a/drivers/staging/vt6655/card.c
+++ b/drivers/staging/vt6655/card.c
@@ -293,6 +293,7 @@ bool CARDbUpdateTSF(struct vnt_private *priv, unsigned char byRxRate,
 		qwTSFOffset = CARDqGetTSFOffset(byRxRate, qwBSSTimestamp,
 						local_tsf);
 		/* adjust TSF, HW's TSF add TSF Offset reg */
+		qwTSFOffset =  le64_to_cpu(qwTSFOffset);
 		iowrite32((u32)qwTSFOffset, priv->port_offset + MAC_REG_TSFOFST);
 		iowrite32((u32)(qwTSFOffset >> 32), priv->port_offset + MAC_REG_TSFOFST + 4);
 		MACvRegBitsOn(priv->port_offset, MAC_REG_TFTCTL,
@@ -327,6 +328,7 @@ bool CARDbSetBeaconPeriod(struct vnt_private *priv,
 	iowrite16(wBeaconInterval, priv->port_offset + MAC_REG_BI);
 	priv->wBeaconInterval = wBeaconInterval;
 	/* Set NextTBTT */
+	qwNextTBTT =  le64_to_cpu(qwNextTBTT);
 	iowrite32((u32)qwNextTBTT, priv->port_offset + MAC_REG_NEXTTBTT);
 	iowrite32((u32)(qwNextTBTT >> 32), priv->port_offset + MAC_REG_NEXTTBTT + 4);
 	MACvRegBitsOn(priv->port_offset, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
@@ -795,6 +797,7 @@ void CARDvSetFirstNextTBTT(struct vnt_private *priv,
 
 	qwNextTBTT = CARDqGetNextTBTT(qwNextTBTT, wBeaconInterval);
 	/* Set NextTBTT */
+	qwNextTBTT =  le64_to_cpu(qwNextTBTT);
 	iowrite32((u32)qwNextTBTT, iobase + MAC_REG_NEXTTBTT);
 	iowrite32((u32)(qwNextTBTT >> 32), iobase + MAC_REG_NEXTTBTT + 4);
 	MACvRegBitsOn(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
@@ -821,6 +824,7 @@ void CARDvUpdateNextTBTT(struct vnt_private *priv, u64 qwTSF,
 
 	qwTSF = CARDqGetNextTBTT(qwTSF, wBeaconInterval);
 	/* Set NextTBTT */
+	qwTSF =  le64_to_cpu(qwTSF);
 	iowrite32((u32)qwTSF, iobase + MAC_REG_NEXTTBTT);
 	iowrite32((u32)(qwTSF >> 32), iobase + MAC_REG_NEXTTBTT + 4);
 	MACvRegBitsOn(iobase, MAC_REG_TFTCTL, TFTCTL_TBTTSYNCEN);
diff --git a/drivers/staging/vt6655/device_main.c b/drivers/staging/vt6655/device_main.c
index c32c0328b602..204994692c90 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1529,6 +1529,7 @@ static void vnt_configure(struct ieee80211_hw *hw,
 			} else {
 				MACvSelectPage1(priv->port_offset);
 
+				multicast =  le64_to_cpu(multicast);
 				iowrite32((u32)multicast, priv->port_offset +  MAC_REG_MAR0);
 				iowrite32((u32)(multicast >> 32),
 					  priv->port_offset + MAC_REG_MAR0 + 4);
-- 
2.25.1