Merge branch 'sun4i-emac-big-endian'

Michael Weiser says:

====================
sun4i-emac: Fixes for running a big-endian kernel on Cubieboard2

the following patches are what remains to be fixed in order to allow running a
big-endian kernel on the Cubieboard2.

The first patch fixes up endianness problems with DMA descriptors in
the stmmac driver preventing it from working correctly when runnning a
big-endian kernel.

The second patch adds the ability to enable diagnostic messages in the
sun4i-emac driver which were instrumental in finding the problem fixed
by patch number three: Endianness confusion caused by dual-purpose I/O
register usage in sun4i-emac.

All of these have been tested successfully on a Cubieboard2 DualCard.

Changes since v4:
- Rebased to current master
- Removed already applied patches to sunxi-mmc and sunxi-Kconfig

Changes since v3:
- Rebased sunxi-mmc patch against Ulf's mmc.git/next
- Changed Kconfig change to enable big-endian support only for sun7i
  devices

Changes since v2:
- Fixed typo in stmmac patch causing a build failure
- Added sun4i-emac patches

Changes since v1:
- Fixed checkpatch niggles
- Added respective Cc:s
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/allwinner/sun4i-emac.c

@@ -37,6 +37,11 @@
 
 #define EMAC_MAX_FRAME_LEN	0x0600
 
+#define EMAC_DEFAULT_MSG_ENABLE 0x0000
+static int debug = -1;     /* defaults above */;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "debug message flags");
+
 /* Transmit timeout, default 5 seconds. */
 static int watchdog = 5000;
 module_param(watchdog, int, 0400);
@@ -225,11 +230,27 @@ static void emac_get_drvinfo(struct net_device *dev,
 	strlcpy(info->bus_info, dev_name(&dev->dev), sizeof(info->bus_info));
 }
 
+static u32 emac_get_msglevel(struct net_device *dev)
+{
+	struct emac_board_info *db = netdev_priv(dev);
+
+	return db->msg_enable;
+}
+
+static void emac_set_msglevel(struct net_device *dev, u32 value)
+{
+	struct emac_board_info *db = netdev_priv(dev);
+
+	db->msg_enable = value;
+}
+
 static const struct ethtool_ops emac_ethtool_ops = {
 	.get_drvinfo	= emac_get_drvinfo,
 	.get_link	= ethtool_op_get_link,
 	.get_link_ksettings = phy_ethtool_get_link_ksettings,
 	.set_link_ksettings = phy_ethtool_set_link_ksettings,
+	.get_msglevel	= emac_get_msglevel,
+	.set_msglevel	= emac_set_msglevel,
 };
 
 static unsigned int emac_setup(struct net_device *ndev)
@@ -571,8 +592,7 @@ static void emac_rx(struct net_device *dev)
 		/* A packet ready now  & Get status/length */
 		good_packet = true;
 
-		emac_inblk_32bit(db->membase + EMAC_RX_IO_DATA_REG,
-				&rxhdr, sizeof(rxhdr));
+		rxhdr = readl(db->membase + EMAC_RX_IO_DATA_REG);
 
 		if (netif_msg_rx_status(db))
 			dev_dbg(db->dev, "rxhdr: %x\n", *((int *)(&rxhdr)));
@@ -804,6 +824,7 @@ static int emac_probe(struct platform_device *pdev)
 	db->dev = &pdev->dev;
 	db->ndev = ndev;
 	db->pdev = pdev;
+	db->msg_enable = netif_msg_init(debug, EMAC_DEFAULT_MSG_ENABLE);
 
 	spin_lock_init(&db->lock);
 

drivers/net/ethernet/stmicro/stmmac/chain_mode.c

@@ -34,7 +34,7 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 	unsigned int entry = priv->cur_tx;
 	struct dma_desc *desc = priv->dma_tx + entry;
 	unsigned int nopaged_len = skb_headlen(skb);
-	unsigned int bmax;
+	unsigned int bmax, des2;
 	unsigned int i = 1, len;
 
 	if (priv->plat->enh_desc)
@@ -44,11 +44,12 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 
 	len = nopaged_len - bmax;
 
-	desc->des2 = dma_map_single(priv->device, skb->data,
-				    bmax, DMA_TO_DEVICE);
-	if (dma_mapping_error(priv->device, desc->des2))
+	des2 = dma_map_single(priv->device, skb->data,
+			      bmax, DMA_TO_DEVICE);
+	desc->des2 = cpu_to_le32(des2);
+	if (dma_mapping_error(priv->device, des2))
 		return -1;
-	priv->tx_skbuff_dma[entry].buf = desc->des2;
+	priv->tx_skbuff_dma[entry].buf = des2;
 	priv->tx_skbuff_dma[entry].len = bmax;
 	/* do not close the descriptor and do not set own bit */
 	priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum, STMMAC_CHAIN_MODE,
@@ -60,12 +61,13 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 		desc = priv->dma_tx + entry;
 
 		if (len > bmax) {
-			desc->des2 = dma_map_single(priv->device,
-						    (skb->data + bmax * i),
-						    bmax, DMA_TO_DEVICE);
-			if (dma_mapping_error(priv->device, desc->des2))
+			des2 = dma_map_single(priv->device,
+					      (skb->data + bmax * i),
+					      bmax, DMA_TO_DEVICE);
+			desc->des2 = cpu_to_le32(des2);
+			if (dma_mapping_error(priv->device, des2))
 				return -1;
-			priv->tx_skbuff_dma[entry].buf = desc->des2;
+			priv->tx_skbuff_dma[entry].buf = des2;
 			priv->tx_skbuff_dma[entry].len = bmax;
 			priv->hw->desc->prepare_tx_desc(desc, 0, bmax, csum,
 							STMMAC_CHAIN_MODE, 1,
@@ -73,12 +75,13 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 			len -= bmax;
 			i++;
 		} else {
-			desc->des2 = dma_map_single(priv->device,
-						    (skb->data + bmax * i), len,
-						    DMA_TO_DEVICE);
-			if (dma_mapping_error(priv->device, desc->des2))
+			des2 = dma_map_single(priv->device,
+					      (skb->data + bmax * i), len,
+					      DMA_TO_DEVICE);
+			desc->des2 = cpu_to_le32(des2);
+			if (dma_mapping_error(priv->device, des2))
 				return -1;
-			priv->tx_skbuff_dma[entry].buf = desc->des2;
+			priv->tx_skbuff_dma[entry].buf = des2;
 			priv->tx_skbuff_dma[entry].len = len;
 			/* last descriptor can be set now */
 			priv->hw->desc->prepare_tx_desc(desc, 0, len, csum,
@@ -119,19 +122,19 @@ static void stmmac_init_dma_chain(void *des, dma_addr_t phy_addr,
 		struct dma_extended_desc *p = (struct dma_extended_desc *)des;
 		for (i = 0; i < (size - 1); i++) {
 			dma_phy += sizeof(struct dma_extended_desc);
-			p->basic.des3 = (unsigned int)dma_phy;
+			p->basic.des3 = cpu_to_le32((unsigned int)dma_phy);
 			p++;
 		}
-		p->basic.des3 = (unsigned int)phy_addr;
+		p->basic.des3 = cpu_to_le32((unsigned int)phy_addr);
 
 	} else {
 		struct dma_desc *p = (struct dma_desc *)des;
 		for (i = 0; i < (size - 1); i++) {
 			dma_phy += sizeof(struct dma_desc);
-			p->des3 = (unsigned int)dma_phy;
+			p->des3 = cpu_to_le32((unsigned int)dma_phy);
 			p++;
 		}
-		p->des3 = (unsigned int)phy_addr;
+		p->des3 = cpu_to_le32((unsigned int)phy_addr);
 	}
 }
 
@@ -144,10 +147,10 @@ static void stmmac_refill_desc3(void *priv_ptr, struct dma_desc *p)
 		 * 1588-2002 time stamping is enabled, hence reinitialize it
 		 * to keep explicit chaining in the descriptor.
 		 */
-		p->des3 = (unsigned int)(priv->dma_rx_phy +
-					 (((priv->dirty_rx) + 1) %
-					  DMA_RX_SIZE) *
-					 sizeof(struct dma_desc));
+		p->des3 = cpu_to_le32((unsigned int)(priv->dma_rx_phy +
+				      (((priv->dirty_rx) + 1) %
+				       DMA_RX_SIZE) *
+				      sizeof(struct dma_desc)));
 }
 
 static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
@@ -161,9 +164,9 @@ static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)
 		 * 1588-2002 time stamping is enabled, hence reinitialize it
 		 * to keep explicit chaining in the descriptor.
 		 */
-		p->des3 = (unsigned int)((priv->dma_tx_phy +
-					  ((priv->dirty_tx + 1) % DMA_TX_SIZE))
-					  * sizeof(struct dma_desc));
+		p->des3 = cpu_to_le32((unsigned int)((priv->dma_tx_phy +
+				      ((priv->dirty_tx + 1) % DMA_TX_SIZE))
+				      * sizeof(struct dma_desc)));
 }
 
 const struct stmmac_mode_ops chain_mode_ops = {

drivers/net/ethernet/stmicro/stmmac/descs.h

@@ -87,7 +87,7 @@
 #define	TDES0_ERROR_SUMMARY		BIT(15)
 #define	TDES0_IP_HEADER_ERROR		BIT(16)
 #define	TDES0_TIME_STAMP_STATUS		BIT(17)
-#define	TDES0_OWN			BIT(31)
+#define	TDES0_OWN			((u32)BIT(31))	/* silence sparse */
 /* TDES1 */
 #define	TDES1_BUFFER1_SIZE_MASK		GENMASK(10, 0)
 #define	TDES1_BUFFER2_SIZE_MASK		GENMASK(21, 11)
@@ -130,7 +130,7 @@
 #define	ETDES0_FIRST_SEGMENT		BIT(28)
 #define	ETDES0_LAST_SEGMENT		BIT(29)
 #define	ETDES0_INTERRUPT		BIT(30)
-#define	ETDES0_OWN			BIT(31)
+#define	ETDES0_OWN			((u32)BIT(31))	/* silence sparse */
 /* TDES1 */
 #define	ETDES1_BUFFER1_SIZE_MASK	GENMASK(12, 0)
 #define	ETDES1_BUFFER2_SIZE_MASK	GENMASK(28, 16)
@@ -166,19 +166,19 @@
 
 /* Basic descriptor structure for normal and alternate descriptors */
 struct dma_desc {
-	unsigned int des0;
-	unsigned int des1;
-	unsigned int des2;
-	unsigned int des3;
+	__le32 des0;
+	__le32 des1;
+	__le32 des2;
+	__le32 des3;
 };
 
 /* Extended descriptor structure (e.g. >= databook 3.50a) */
 struct dma_extended_desc {
 	struct dma_desc basic;	/* Basic descriptors */
-	unsigned int des4;	/* Extended Status */
-	unsigned int des5;	/* Reserved */
-	unsigned int des6;	/* Tx/Rx Timestamp Low */
-	unsigned int des7;	/* Tx/Rx Timestamp High */
+	__le32 des4;	/* Extended Status */
+	__le32 des5;	/* Reserved */
+	__le32 des6;	/* Tx/Rx Timestamp Low */
+	__le32 des7;	/* Tx/Rx Timestamp High */
 };
 
 /* Transmit checksum insertion control */

drivers/net/ethernet/stmicro/stmmac/descs_com.h

@@ -35,47 +35,50 @@
 /* Enhanced descriptors */
 static inline void ehn_desc_rx_set_on_ring(struct dma_desc *p, int end)
 {
-	p->des1 |= ((BUF_SIZE_8KiB - 1) << ERDES1_BUFFER2_SIZE_SHIFT)
-		   & ERDES1_BUFFER2_SIZE_MASK;
+	p->des1 |= cpu_to_le32(((BUF_SIZE_8KiB - 1)
+			<< ERDES1_BUFFER2_SIZE_SHIFT)
+		   & ERDES1_BUFFER2_SIZE_MASK);
 
 	if (end)
-		p->des1 |= ERDES1_END_RING;
+		p->des1 |= cpu_to_le32(ERDES1_END_RING);
 }
 
 static inline void enh_desc_end_tx_desc_on_ring(struct dma_desc *p, int end)
 {
 	if (end)
-		p->des0 |= ETDES0_END_RING;
+		p->des0 |= cpu_to_le32(ETDES0_END_RING);
 	else
-		p->des0 &= ~ETDES0_END_RING;
+		p->des0 &= cpu_to_le32(~ETDES0_END_RING);
 }
 
 static inline void enh_set_tx_desc_len_on_ring(struct dma_desc *p, int len)
 {
 	if (unlikely(len > BUF_SIZE_4KiB)) {
-		p->des1 |= (((len - BUF_SIZE_4KiB) << ETDES1_BUFFER2_SIZE_SHIFT)
+		p->des1 |= cpu_to_le32((((len - BUF_SIZE_4KiB)
+					<< ETDES1_BUFFER2_SIZE_SHIFT)
 			    & ETDES1_BUFFER2_SIZE_MASK) | (BUF_SIZE_4KiB
-			    & ETDES1_BUFFER1_SIZE_MASK);
+			    & ETDES1_BUFFER1_SIZE_MASK));
 	} else
-		p->des1 |= (len & ETDES1_BUFFER1_SIZE_MASK);
+		p->des1 |= cpu_to_le32((len & ETDES1_BUFFER1_SIZE_MASK));
 }
 
 /* Normal descriptors */
 static inline void ndesc_rx_set_on_ring(struct dma_desc *p, int end)
 {
-	p->des1 |= ((BUF_SIZE_2KiB - 1) << RDES1_BUFFER2_SIZE_SHIFT)
-		    & RDES1_BUFFER2_SIZE_MASK;
+	p->des1 |= cpu_to_le32(((BUF_SIZE_2KiB - 1)
+				<< RDES1_BUFFER2_SIZE_SHIFT)
+		    & RDES1_BUFFER2_SIZE_MASK);
 
 	if (end)
-		p->des1 |= RDES1_END_RING;
+		p->des1 |= cpu_to_le32(RDES1_END_RING);
 }
 
 static inline void ndesc_end_tx_desc_on_ring(struct dma_desc *p, int end)
 {
 	if (end)
-		p->des1 |= TDES1_END_RING;
+		p->des1 |= cpu_to_le32(TDES1_END_RING);
 	else
-		p->des1 &= ~TDES1_END_RING;
+		p->des1 &= cpu_to_le32(~TDES1_END_RING);
 }
 
 static inline void norm_set_tx_desc_len_on_ring(struct dma_desc *p, int len)
@@ -83,10 +86,11 @@ static inline void norm_set_tx_desc_len_on_ring(struct dma_desc *p, int len)
 	if (unlikely(len > BUF_SIZE_2KiB)) {
 		unsigned int buffer1 = (BUF_SIZE_2KiB - 1)
 					& TDES1_BUFFER1_SIZE_MASK;
-		p->des1 |= ((((len - buffer1) << TDES1_BUFFER2_SIZE_SHIFT)
-			    & TDES1_BUFFER2_SIZE_MASK) | buffer1);
+		p->des1 |= cpu_to_le32((((len - buffer1)
+					<< TDES1_BUFFER2_SIZE_SHIFT)
+				& TDES1_BUFFER2_SIZE_MASK) | buffer1);
 	} else
-		p->des1 |= (len & TDES1_BUFFER1_SIZE_MASK);
+		p->des1 |= cpu_to_le32((len & TDES1_BUFFER1_SIZE_MASK));
 }
 
 /* Specific functions used for Chain mode */
@@ -94,32 +98,32 @@ static inline void norm_set_tx_desc_len_on_ring(struct dma_desc *p, int len)
 /* Enhanced descriptors */
 static inline void ehn_desc_rx_set_on_chain(struct dma_desc *p)
 {
-	p->des1 |= ERDES1_SECOND_ADDRESS_CHAINED;
+	p->des1 |= cpu_to_le32(ERDES1_SECOND_ADDRESS_CHAINED);
 }
 
 static inline void enh_desc_end_tx_desc_on_chain(struct dma_desc *p)
 {
-	p->des0 |= ETDES0_SECOND_ADDRESS_CHAINED;
+	p->des0 |= cpu_to_le32(ETDES0_SECOND_ADDRESS_CHAINED);
 }
 
 static inline void enh_set_tx_desc_len_on_chain(struct dma_desc *p, int len)
 {
-	p->des1 |= (len & ETDES1_BUFFER1_SIZE_MASK);
+	p->des1 |= cpu_to_le32(len & ETDES1_BUFFER1_SIZE_MASK);
 }
 
 /* Normal descriptors */
 static inline void ndesc_rx_set_on_chain(struct dma_desc *p, int end)
 {
-	p->des1 |= RDES1_SECOND_ADDRESS_CHAINED;
+	p->des1 |= cpu_to_le32(RDES1_SECOND_ADDRESS_CHAINED);
 }
 
 static inline void ndesc_tx_set_on_chain(struct dma_desc *p)
 {
-	p->des1 |= TDES1_SECOND_ADDRESS_CHAINED;
+	p->des1 |= cpu_to_le32(TDES1_SECOND_ADDRESS_CHAINED);
 }
 
 static inline void norm_set_tx_desc_len_on_chain(struct dma_desc *p, int len)
 {
-	p->des1 |= len & TDES1_BUFFER1_SIZE_MASK;
+	p->des1 |= cpu_to_le32(len & TDES1_BUFFER1_SIZE_MASK);
 }
 #endif /* __DESC_COM_H__ */

drivers/net/ethernet/stmicro/stmmac/dwmac4_descs.c

@@ -23,7 +23,7 @@ static int dwmac4_wrback_get_tx_status(void *data, struct stmmac_extra_stats *x,
 	unsigned int tdes3;
 	int ret = tx_done;
 
-	tdes3 = p->des3;
+	tdes3 = le32_to_cpu(p->des3);
 
 	/* Get tx owner first */
 	if (unlikely(tdes3 & TDES3_OWN))
@@ -77,9 +77,9 @@ static int dwmac4_wrback_get_rx_status(void *data, struct stmmac_extra_stats *x,
 				       struct dma_desc *p)
 {
 	struct net_device_stats *stats = (struct net_device_stats *)data;
-	unsigned int rdes1 = p->des1;
-	unsigned int rdes2 = p->des2;
-	unsigned int rdes3 = p->des3;
+	unsigned int rdes1 = le32_to_cpu(p->des1);
+	unsigned int rdes2 = le32_to_cpu(p->des2);
+	unsigned int rdes3 = le32_to_cpu(p->des3);
 	int message_type;
 	int ret = good_frame;
 
@@ -169,42 +169,43 @@ static int dwmac4_wrback_get_rx_status(void *data, struct stmmac_extra_stats *x,
 
 static int dwmac4_rd_get_tx_len(struct dma_desc *p)
 {
-	return (p->des2 & TDES2_BUFFER1_SIZE_MASK);
+	return (le32_to_cpu(p->des2) & TDES2_BUFFER1_SIZE_MASK);
 }
 
 static int dwmac4_get_tx_owner(struct dma_desc *p)
 {
-	return (p->des3 & TDES3_OWN) >> TDES3_OWN_SHIFT;
+	return (le32_to_cpu(p->des3) & TDES3_OWN) >> TDES3_OWN_SHIFT;
 }
 
 static void dwmac4_set_tx_owner(struct dma_desc *p)
 {
-	p->des3 |= TDES3_OWN;
+	p->des3 |= cpu_to_le32(TDES3_OWN);
 }
 
 static void dwmac4_set_rx_owner(struct dma_desc *p)
 {
-	p->des3 |= RDES3_OWN;
+	p->des3 |= cpu_to_le32(RDES3_OWN);
 }
 
 static int dwmac4_get_tx_ls(struct dma_desc *p)
 {
-	return (p->des3 & TDES3_LAST_DESCRIPTOR) >> TDES3_LAST_DESCRIPTOR_SHIFT;
+	return (le32_to_cpu(p->des3) & TDES3_LAST_DESCRIPTOR)
+		>> TDES3_LAST_DESCRIPTOR_SHIFT;
 }
 
 static int dwmac4_wrback_get_rx_frame_len(struct dma_desc *p, int rx_coe)
 {
-	return (p->des3 & RDES3_PACKET_SIZE_MASK);
+	return (le32_to_cpu(p->des3) & RDES3_PACKET_SIZE_MASK);
 }
 
 static void dwmac4_rd_enable_tx_timestamp(struct dma_desc *p)
 {
-	p->des2 |= TDES2_TIMESTAMP_ENABLE;
+	p->des2 |= cpu_to_le32(TDES2_TIMESTAMP_ENABLE);
 }
 
 static int dwmac4_wrback_get_tx_timestamp_status(struct dma_desc *p)
 {
-	return (p->des3 & TDES3_TIMESTAMP_STATUS)
+	return (le32_to_cpu(p->des3) & TDES3_TIMESTAMP_STATUS)
 		>> TDES3_TIMESTAMP_STATUS_SHIFT;
 }
 
@@ -216,9 +217,9 @@ static u64 dwmac4_wrback_get_timestamp(void *desc, u32 ats)
 	struct dma_desc *p = (struct dma_desc *)desc;
 	u64 ns;
 
-	ns = p->des0;
+	ns = le32_to_cpu(p->des0);
 	/* convert high/sec time stamp value to nanosecond */
-	ns += p->des1 * 1000000000ULL;
+	ns += le32_to_cpu(p->des1) * 1000000000ULL;
 
 	return ns;
 }
@@ -227,17 +228,17 @@ static int dwmac4_context_get_rx_timestamp_status(void *desc, u32 ats)
 {
 	struct dma_desc *p = (struct dma_desc *)desc;
 
-	return (p->des1 & RDES1_TIMESTAMP_AVAILABLE)
+	return (le32_to_cpu(p->des1) & RDES1_TIMESTAMP_AVAILABLE)
 		>> RDES1_TIMESTAMP_AVAILABLE_SHIFT;
 }
 
 static void dwmac4_rd_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
 				   int mode, int end)
 {
-	p->des3 = RDES3_OWN | RDES3_BUFFER1_VALID_ADDR;
+	p->des3 = cpu_to_le32(RDES3_OWN | RDES3_BUFFER1_VALID_ADDR);
 
 	if (!disable_rx_ic)
-		p->des3 |= RDES3_INT_ON_COMPLETION_EN;
+		p->des3 |= cpu_to_le32(RDES3_INT_ON_COMPLETION_EN);
 }
 
 static void dwmac4_rd_init_tx_desc(struct dma_desc *p, int mode, int end)
@@ -252,9 +253,9 @@ static void dwmac4_rd_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 				      bool csum_flag, int mode, bool tx_own,
 				      bool ls)
 {
-	unsigned int tdes3 = p->des3;
+	unsigned int tdes3 = le32_to_cpu(p->des3);
 
-	p->des2 |= (len & TDES2_BUFFER1_SIZE_MASK);
+	p->des2 |= cpu_to_le32(len & TDES2_BUFFER1_SIZE_MASK);
 
 	if (is_fs)
 		tdes3 |= TDES3_FIRST_DESCRIPTOR;
@@ -282,7 +283,7 @@ static void dwmac4_rd_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 		 */
 		wmb();
 
-	p->des3 = tdes3;
+	p->des3 = cpu_to_le32(tdes3);
 }
 
 static void dwmac4_rd_prepare_tso_tx_desc(struct dma_desc *p, int is_fs,
@@ -290,14 +291,14 @@ static void dwmac4_rd_prepare_tso_tx_desc(struct dma_desc *p, int is_fs,
 					  bool ls, unsigned int tcphdrlen,
 					  unsigned int tcppayloadlen)
 {
-	unsigned int tdes3 = p->des3;
+	unsigned int tdes3 = le32_to_cpu(p->des3);
 
 	if (len1)
-		p->des2 |= (len1 & TDES2_BUFFER1_SIZE_MASK);
+		p->des2 |= cpu_to_le32((len1 & TDES2_BUFFER1_SIZE_MASK));
 
 	if (len2)
-		p->des2 |= (len2 << TDES2_BUFFER2_SIZE_MASK_SHIFT)
-			    & TDES2_BUFFER2_SIZE_MASK;
+		p->des2 |= cpu_to_le32((len2 << TDES2_BUFFER2_SIZE_MASK_SHIFT)
+			    & TDES2_BUFFER2_SIZE_MASK);
 
 	if (is_fs) {
 		tdes3 |= TDES3_FIRST_DESCRIPTOR |
@@ -325,7 +326,7 @@ static void dwmac4_rd_prepare_tso_tx_desc(struct dma_desc *p, int is_fs,
 		 */
 		wmb();
 
-	p->des3 = tdes3;
+	p->des3 = cpu_to_le32(tdes3);
 }
 
 static void dwmac4_release_tx_desc(struct dma_desc *p, int mode)
@@ -336,7 +337,7 @@ static void dwmac4_release_tx_desc(struct dma_desc *p, int mode)
 
 static void dwmac4_rd_set_tx_ic(struct dma_desc *p)
 {
-	p->des2 |= TDES2_INTERRUPT_ON_COMPLETION;
+	p->des2 |= cpu_to_le32(TDES2_INTERRUPT_ON_COMPLETION);
 }
 
 static void dwmac4_display_ring(void *head, unsigned int size, bool rx)
@@ -349,7 +350,8 @@ static void dwmac4_display_ring(void *head, unsigned int size, bool rx)
 	for (i = 0; i < size; i++) {
 		pr_info("%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
 			i, (unsigned int)virt_to_phys(p),
-			p->des0, p->des1, p->des2, p->des3);
+			le32_to_cpu(p->des0), le32_to_cpu(p->des1),
+			le32_to_cpu(p->des2), le32_to_cpu(p->des3));
 		p++;
 	}
 }
@@ -358,8 +360,8 @@ static void dwmac4_set_mss_ctxt(struct dma_desc *p, unsigned int mss)
 {
 	p->des0 = 0;
 	p->des1 = 0;
-	p->des2 = mss;
-	p->des3 = TDES3_CONTEXT_TYPE | TDES3_CTXT_TCMSSV;
+	p->des2 = cpu_to_le32(mss);
+	p->des3 = cpu_to_le32(TDES3_CONTEXT_TYPE | TDES3_CTXT_TCMSSV);
 }
 
 const struct stmmac_desc_ops dwmac4_desc_ops = {

drivers/net/ethernet/stmicro/stmmac/enh_desc.c

@@ -30,7 +30,7 @@ static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
 				  struct dma_desc *p, void __iomem *ioaddr)
 {
 	struct net_device_stats *stats = (struct net_device_stats *)data;
-	unsigned int tdes0 = p->des0;
+	unsigned int tdes0 = le32_to_cpu(p->des0);
 	int ret = tx_done;
 
 	/* Get tx owner first */
@@ -95,7 +95,7 @@ static int enh_desc_get_tx_status(void *data, struct stmmac_extra_stats *x,
 
 static int enh_desc_get_tx_len(struct dma_desc *p)
 {
-	return (p->des1 & ETDES1_BUFFER1_SIZE_MASK);
+	return (le32_to_cpu(p->des1) & ETDES1_BUFFER1_SIZE_MASK);
 }
 
 static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
@@ -134,8 +134,8 @@ static int enh_desc_coe_rdes0(int ipc_err, int type, int payload_err)
 static void enh_desc_get_ext_status(void *data, struct stmmac_extra_stats *x,
 				    struct dma_extended_desc *p)
 {
-	unsigned int rdes0 = p->basic.des0;
-	unsigned int rdes4 = p->des4;
+	unsigned int rdes0 = le32_to_cpu(p->basic.des0);
+	unsigned int rdes4 = le32_to_cpu(p->des4);
 
 	if (unlikely(rdes0 & ERDES0_RX_MAC_ADDR)) {
 		int message_type = (rdes4 & ERDES4_MSG_TYPE_MASK) >> 8;
@@ -191,7 +191,7 @@ static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
 				  struct dma_desc *p)
 {
 	struct net_device_stats *stats = (struct net_device_stats *)data;
-	unsigned int rdes0 = p->des0;
+	unsigned int rdes0 = le32_to_cpu(p->des0);
 	int ret = good_frame;
 
 	if (unlikely(rdes0 & RDES0_OWN))
@@ -257,8 +257,8 @@ static int enh_desc_get_rx_status(void *data, struct stmmac_extra_stats *x,
 static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
 				  int mode, int end)
 {
-	p->des0 |= RDES0_OWN;
-	p->des1 |= ((BUF_SIZE_8KiB - 1) & ERDES1_BUFFER1_SIZE_MASK);
+	p->des0 |= cpu_to_le32(RDES0_OWN);
+	p->des1 |= cpu_to_le32((BUF_SIZE_8KiB - 1) & ERDES1_BUFFER1_SIZE_MASK);
 
 	if (mode == STMMAC_CHAIN_MODE)
 		ehn_desc_rx_set_on_chain(p);
@@ -266,12 +266,12 @@ static void enh_desc_init_rx_desc(struct dma_desc *p, int disable_rx_ic,
 		ehn_desc_rx_set_on_ring(p, end);
 
 	if (disable_rx_ic)
-		p->des1 |= ERDES1_DISABLE_IC;
+		p->des1 |= cpu_to_le32(ERDES1_DISABLE_IC);
 }
 
 static void enh_desc_init_tx_desc(struct dma_desc *p, int mode, int end)
 {
-	p->des0 &= ~ETDES0_OWN;
+	p->des0 &= cpu_to_le32(~ETDES0_OWN);
 	if (mode == STMMAC_CHAIN_MODE)
 		enh_desc_end_tx_desc_on_chain(p);
 	else
@@ -280,27 +280,27 @@ static void enh_desc_init_tx_desc(struct dma_desc *p, int mode, int end)
 
 static int enh_desc_get_tx_owner(struct dma_desc *p)
 {
-	return (p->des0 & ETDES0_OWN) >> 31;
+	return (le32_to_cpu(p->des0) & ETDES0_OWN) >> 31;
 }
 
 static void enh_desc_set_tx_owner(struct dma_desc *p)
 {
-	p->des0 |= ETDES0_OWN;
+	p->des0 |= cpu_to_le32(ETDES0_OWN);
 }
 
 static void enh_desc_set_rx_owner(struct dma_desc *p)
 {
-	p->des0 |= RDES0_OWN;
+	p->des0 |= cpu_to_le32(RDES0_OWN);
 }
 
 static int enh_desc_get_tx_ls(struct dma_desc *p)
 {
-	return (p->des0 & ETDES0_LAST_SEGMENT) >> 29;
+	return (le32_to_cpu(p->des0) & ETDES0_LAST_SEGMENT) >> 29;
 }
 
 static void enh_desc_release_tx_desc(struct dma_desc *p, int mode)
 {
-	int ter = (p->des0 & ETDES0_END_RING) >> 21;
+	int ter = (le32_to_cpu(p->des0) & ETDES0_END_RING) >> 21;
 
 	memset(p, 0, offsetof(struct dma_desc, des2));
 	if (mode == STMMAC_CHAIN_MODE)
@@ -313,7 +313,7 @@ static void enh_desc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 				     bool csum_flag, int mode, bool tx_own,
 				     bool ls)
 {
-	unsigned int tdes0 = p->des0;
+	unsigned int tdes0 = le32_to_cpu(p->des0);
 
 	if (mode == STMMAC_CHAIN_MODE)
 		enh_set_tx_desc_len_on_chain(p, len);
@@ -344,12 +344,12 @@ static void enh_desc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 		 */
 		wmb();
 
-	p->des0 = tdes0;
+	p->des0 = cpu_to_le32(tdes0);
 }
 
 static void enh_desc_set_tx_ic(struct dma_desc *p)
 {
-	p->des0 |= ETDES0_INTERRUPT;
+	p->des0 |= cpu_to_le32(ETDES0_INTERRUPT);
 }
 
 static int enh_desc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
@@ -364,18 +364,18 @@ static int enh_desc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
 	if (rx_coe_type == STMMAC_RX_COE_TYPE1)
 		csum = 2;
 
-	return (((p->des0 & RDES0_FRAME_LEN_MASK) >> RDES0_FRAME_LEN_SHIFT) -
-		csum);
+	return (((le32_to_cpu(p->des0) & RDES0_FRAME_LEN_MASK)
+				>> RDES0_FRAME_LEN_SHIFT) - csum);
 }
 
 static void enh_desc_enable_tx_timestamp(struct dma_desc *p)
 {
-	p->des0 |= ETDES0_TIME_STAMP_ENABLE;
+	p->des0 |= cpu_to_le32(ETDES0_TIME_STAMP_ENABLE);
 }
 
 static int enh_desc_get_tx_timestamp_status(struct dma_desc *p)
 {
-	return (p->des0 & ETDES0_TIME_STAMP_STATUS) >> 17;
+	return (le32_to_cpu(p->des0) & ETDES0_TIME_STAMP_STATUS) >> 17;
 }
 
 static u64 enh_desc_get_timestamp(void *desc, u32 ats)
@@ -384,13 +384,13 @@ static u64 enh_desc_get_timestamp(void *desc, u32 ats)
 
 	if (ats) {
 		struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
-		ns = p->des6;
+		ns = le32_to_cpu(p->des6);
 		/* convert high/sec time stamp value to nanosecond */
-		ns += p->des7 * 1000000000ULL;
+		ns += le32_to_cpu(p->des7) * 1000000000ULL;
 	} else {
 		struct dma_desc *p = (struct dma_desc *)desc;
-		ns = p->des2;
-		ns += p->des3 * 1000000000ULL;
+		ns = le32_to_cpu(p->des2);
+		ns += le32_to_cpu(p->des3) * 1000000000ULL;
 	}
 
 	return ns;
@@ -400,10 +400,11 @@ static int enh_desc_get_rx_timestamp_status(void *desc, u32 ats)
 {
 	if (ats) {
 		struct dma_extended_desc *p = (struct dma_extended_desc *)desc;
-		return (p->basic.des0 & RDES0_IPC_CSUM_ERROR) >> 7;
+		return (le32_to_cpu(p->basic.des0) & RDES0_IPC_CSUM_ERROR) >> 7;
 	} else {
 		struct dma_desc *p = (struct dma_desc *)desc;
-		if ((p->des2 == 0xffffffff) && (p->des3 == 0xffffffff))
+		if ((le32_to_cpu(p->des2) == 0xffffffff) &&
+		    (le32_to_cpu(p->des3) == 0xffffffff))
 			/* timestamp is corrupted, hence don't store it */
 			return 0;
 		else

drivers/net/ethernet/stmicro/stmmac/norm_desc.c

@@ -30,8 +30,8 @@ static int ndesc_get_tx_status(void *data, struct stmmac_extra_stats *x,
 			       struct dma_desc *p, void __iomem *ioaddr)
 {
 	struct net_device_stats *stats = (struct net_device_stats *)data;
-	unsigned int tdes0 = p->des0;
-	unsigned int tdes1 = p->des1;
+	unsigned int tdes0 = le32_to_cpu(p->des0);
+	unsigned int tdes1 = le32_to_cpu(p->des1);
 	int ret = tx_done;
 
 	/* Get tx owner first */
@@ -77,7 +77,7 @@ static int ndesc_get_tx_status(void *data, struct stmmac_extra_stats *x,
 
 static int ndesc_get_tx_len(struct dma_desc *p)
 {
-	return (p->des1 & RDES1_BUFFER1_SIZE_MASK);
+	return (le32_to_cpu(p->des1) & RDES1_BUFFER1_SIZE_MASK);
 }
 
 /* This function verifies if each incoming frame has some errors
@@ -88,7 +88,7 @@ static int ndesc_get_rx_status(void *data, struct stmmac_extra_stats *x,
 			       struct dma_desc *p)
 {
 	int ret = good_frame;
-	unsigned int rdes0 = p->des0;
+	unsigned int rdes0 = le32_to_cpu(p->des0);
 	struct net_device_stats *stats = (struct net_device_stats *)data;
 
 	if (unlikely(rdes0 & RDES0_OWN))
@@ -141,8 +141,8 @@ static int ndesc_get_rx_status(void *data, struct stmmac_extra_stats *x,
 static void ndesc_init_rx_desc(struct dma_desc *p, int disable_rx_ic, int mode,
 			       int end)
 {
-	p->des0 |= RDES0_OWN;
-	p->des1 |= (BUF_SIZE_2KiB - 1) & RDES1_BUFFER1_SIZE_MASK;
+	p->des0 |= cpu_to_le32(RDES0_OWN);
+	p->des1 |= cpu_to_le32((BUF_SIZE_2KiB - 1) & RDES1_BUFFER1_SIZE_MASK);
 
 	if (mode == STMMAC_CHAIN_MODE)
 		ndesc_rx_set_on_chain(p, end);
@@ -150,12 +150,12 @@ static void ndesc_init_rx_desc(struct dma_desc *p, int disable_rx_ic, int mode,
 		ndesc_rx_set_on_ring(p, end);
 
 	if (disable_rx_ic)
-		p->des1 |= RDES1_DISABLE_IC;
+		p->des1 |= cpu_to_le32(RDES1_DISABLE_IC);
 }
 
 static void ndesc_init_tx_desc(struct dma_desc *p, int mode, int end)
 {
-	p->des0 &= ~TDES0_OWN;
+	p->des0 &= cpu_to_le32(~TDES0_OWN);
 	if (mode == STMMAC_CHAIN_MODE)
 		ndesc_tx_set_on_chain(p);
 	else
@@ -164,27 +164,27 @@ static void ndesc_init_tx_desc(struct dma_desc *p, int mode, int end)
 
 static int ndesc_get_tx_owner(struct dma_desc *p)
 {
-	return (p->des0 & TDES0_OWN) >> 31;
+	return (le32_to_cpu(p->des0) & TDES0_OWN) >> 31;
 }
 
 static void ndesc_set_tx_owner(struct dma_desc *p)
 {
-	p->des0 |= TDES0_OWN;
+	p->des0 |= cpu_to_le32(TDES0_OWN);
 }
 
 static void ndesc_set_rx_owner(struct dma_desc *p)
 {
-	p->des0 |= RDES0_OWN;
+	p->des0 |= cpu_to_le32(RDES0_OWN);
 }
 
 static int ndesc_get_tx_ls(struct dma_desc *p)
 {
-	return (p->des1 & TDES1_LAST_SEGMENT) >> 30;
+	return (le32_to_cpu(p->des1) & TDES1_LAST_SEGMENT) >> 30;
 }
 
 static void ndesc_release_tx_desc(struct dma_desc *p, int mode)
 {
-	int ter = (p->des1 & TDES1_END_RING) >> 25;
+	int ter = (le32_to_cpu(p->des1) & TDES1_END_RING) >> 25;
 
 	memset(p, 0, offsetof(struct dma_desc, des2));
 	if (mode == STMMAC_CHAIN_MODE)
@@ -197,7 +197,7 @@ static void ndesc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 				  bool csum_flag, int mode, bool tx_own,
 				  bool ls)
 {
-	unsigned int tdes1 = p->des1;
+	unsigned int tdes1 = le32_to_cpu(p->des1);
 
 	if (is_fs)
 		tdes1 |= TDES1_FIRST_SEGMENT;
@@ -212,7 +212,7 @@ static void ndesc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 	if (ls)
 		tdes1 |= TDES1_LAST_SEGMENT;
 
-	p->des1 = tdes1;
+	p->des1 = cpu_to_le32(tdes1);
 
 	if (mode == STMMAC_CHAIN_MODE)
 		norm_set_tx_desc_len_on_chain(p, len);
@@ -220,12 +220,12 @@ static void ndesc_prepare_tx_desc(struct dma_desc *p, int is_fs, int len,
 		norm_set_tx_desc_len_on_ring(p, len);
 
 	if (tx_own)
-		p->des0 |= TDES0_OWN;
+		p->des0 |= cpu_to_le32(TDES0_OWN);
 }
 
 static void ndesc_set_tx_ic(struct dma_desc *p)
 {
-	p->des1 |= TDES1_INTERRUPT;
+	p->des1 |= cpu_to_le32(TDES1_INTERRUPT);
 }
 
 static int ndesc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
@@ -241,19 +241,20 @@ static int ndesc_get_rx_frame_len(struct dma_desc *p, int rx_coe_type)
 	if (rx_coe_type == STMMAC_RX_COE_TYPE1)
 		csum = 2;
 
-	return (((p->des0 & RDES0_FRAME_LEN_MASK) >> RDES0_FRAME_LEN_SHIFT) -
+	return (((le32_to_cpu(p->des0) & RDES0_FRAME_LEN_MASK)
+				>> RDES0_FRAME_LEN_SHIFT) -
 		csum);
 
 }
 
 static void ndesc_enable_tx_timestamp(struct dma_desc *p)
 {
-	p->des1 |= TDES1_TIME_STAMP_ENABLE;
+	p->des1 |= cpu_to_le32(TDES1_TIME_STAMP_ENABLE);
 }
 
 static int ndesc_get_tx_timestamp_status(struct dma_desc *p)
 {
-	return (p->des0 & TDES0_TIME_STAMP_STATUS) >> 17;
+	return (le32_to_cpu(p->des0) & TDES0_TIME_STAMP_STATUS) >> 17;
 }
 
 static u64 ndesc_get_timestamp(void *desc, u32 ats)
@@ -261,9 +262,9 @@ static u64 ndesc_get_timestamp(void *desc, u32 ats)
 	struct dma_desc *p = (struct dma_desc *)desc;
 	u64 ns;
 
-	ns = p->des2;
+	ns = le32_to_cpu(p->des2);
 	/* convert high/sec time stamp value to nanosecond */
-	ns += p->des3 * 1000000000ULL;
+	ns += le32_to_cpu(p->des3) * 1000000000ULL;
 
 	return ns;
 }
@@ -272,7 +273,8 @@ static int ndesc_get_rx_timestamp_status(void *desc, u32 ats)
 {
 	struct dma_desc *p = (struct dma_desc *)desc;
 
-	if ((p->des2 == 0xffffffff) && (p->des3 == 0xffffffff))
+	if ((le32_to_cpu(p->des2) == 0xffffffff) &&
+	    (le32_to_cpu(p->des3) == 0xffffffff))
 		/* timestamp is corrupted, hence don't store it */
 		return 0;
 	else

drivers/net/ethernet/stmicro/stmmac/ring_mode.c

@@ -34,7 +34,7 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 	unsigned int entry = priv->cur_tx;
 	struct dma_desc *desc;
 	unsigned int nopaged_len = skb_headlen(skb);
-	unsigned int bmax, len;
+	unsigned int bmax, len, des2;
 
 	if (priv->extend_desc)
 		desc = (struct dma_desc *)(priv->dma_etx + entry);
@@ -50,16 +50,17 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 
 	if (nopaged_len > BUF_SIZE_8KiB) {
 
-		desc->des2 = dma_map_single(priv->device, skb->data,
-					    bmax, DMA_TO_DEVICE);
-		if (dma_mapping_error(priv->device, desc->des2))
+		des2 = dma_map_single(priv->device, skb->data, bmax,
+				      DMA_TO_DEVICE);
+		desc->des2 = cpu_to_le32(des2);
+		if (dma_mapping_error(priv->device, des2))
 			return -1;
 
-		priv->tx_skbuff_dma[entry].buf = desc->des2;
+		priv->tx_skbuff_dma[entry].buf = des2;
 		priv->tx_skbuff_dma[entry].len = bmax;
 		priv->tx_skbuff_dma[entry].is_jumbo = true;
 
-		desc->des3 = desc->des2 + BUF_SIZE_4KiB;
+		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
 		priv->hw->desc->prepare_tx_desc(desc, 1, bmax, csum,
 						STMMAC_RING_MODE, 0, false);
 		priv->tx_skbuff[entry] = NULL;
@@ -70,26 +71,28 @@ static int stmmac_jumbo_frm(void *p, struct sk_buff *skb, int csum)
 		else
 			desc = priv->dma_tx + entry;
 
-		desc->des2 = dma_map_single(priv->device, skb->data + bmax,
-					    len, DMA_TO_DEVICE);
-		if (dma_mapping_error(priv->device, desc->des2))
+		des2 = dma_map_single(priv->device, skb->data + bmax, len,
+				      DMA_TO_DEVICE);
+		desc->des2 = cpu_to_le32(des2);
+		if (dma_mapping_error(priv->device, des2))
 			return -1;
-		priv->tx_skbuff_dma[entry].buf = desc->des2;
+		priv->tx_skbuff_dma[entry].buf = des2;
 		priv->tx_skbuff_dma[entry].len = len;
 		priv->tx_skbuff_dma[entry].is_jumbo = true;
 
-		desc->des3 = desc->des2 + BUF_SIZE_4KiB;
+		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
 		priv->hw->desc->prepare_tx_desc(desc, 0, len, csum,
 						STMMAC_RING_MODE, 1, true);
 	} else {
-		desc->des2 = dma_map_single(priv->device, skb->data,
-					    nopaged_len, DMA_TO_DEVICE);
-		if (dma_mapping_error(priv->device, desc->des2))
+		des2 = dma_map_single(priv->device, skb->data,
+				      nopaged_len, DMA_TO_DEVICE);
+		desc->des2 = cpu_to_le32(des2);
+		if (dma_mapping_error(priv->device, des2))
 			return -1;
-		priv->tx_skbuff_dma[entry].buf = desc->des2;
+		priv->tx_skbuff_dma[entry].buf = des2;
 		priv->tx_skbuff_dma[entry].len = nopaged_len;
 		priv->tx_skbuff_dma[entry].is_jumbo = true;
-		desc->des3 = desc->des2 + BUF_SIZE_4KiB;
+		desc->des3 = cpu_to_le32(des2 + BUF_SIZE_4KiB);
 		priv->hw->desc->prepare_tx_desc(desc, 1, nopaged_len, csum,
 						STMMAC_RING_MODE, 0, true);
 	}
@@ -115,13 +118,13 @@ static void stmmac_refill_desc3(void *priv_ptr, struct dma_desc *p)
 
 	/* Fill DES3 in case of RING mode */
 	if (priv->dma_buf_sz >= BUF_SIZE_8KiB)
-		p->des3 = p->des2 + BUF_SIZE_8KiB;
+		p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
 }
 
 /* In ring mode we need to fill the desc3 because it is used as buffer */
 static void stmmac_init_desc3(struct dma_desc *p)
 {
-	p->des3 = p->des2 + BUF_SIZE_8KiB;
+	p->des3 = cpu_to_le32(le32_to_cpu(p->des2) + BUF_SIZE_8KiB);
 }
 
 static void stmmac_clean_desc3(void *priv_ptr, struct dma_desc *p)

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

@@ -990,9 +990,9 @@ static int stmmac_init_rx_buffers(struct stmmac_priv *priv, struct dma_desc *p,
 	}
 
 	if (priv->synopsys_id >= DWMAC_CORE_4_00)
-		p->des0 = priv->rx_skbuff_dma[i];
+		p->des0 = cpu_to_le32(priv->rx_skbuff_dma[i]);
 	else
-		p->des2 = priv->rx_skbuff_dma[i];
+		p->des2 = cpu_to_le32(priv->rx_skbuff_dma[i]);
 
 	if ((priv->hw->mode->init_desc3) &&
 	    (priv->dma_buf_sz == BUF_SIZE_16KiB))
@@ -1946,7 +1946,7 @@ static void stmmac_tso_allocator(struct stmmac_priv *priv, unsigned int des,
 		priv->cur_tx = STMMAC_GET_ENTRY(priv->cur_tx, DMA_TX_SIZE);
 		desc = priv->dma_tx + priv->cur_tx;
 
-		desc->des0 = des + (total_len - tmp_len);
+		desc->des0 = cpu_to_le32(des + (total_len - tmp_len));
 		buff_size = tmp_len >= TSO_MAX_BUFF_SIZE ?
 			    TSO_MAX_BUFF_SIZE : tmp_len;
 
@@ -2048,11 +2048,11 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev)
 	priv->tx_skbuff_dma[first_entry].len = skb_headlen(skb);
 	priv->tx_skbuff[first_entry] = skb;
 
-	first->des0 = des;
+	first->des0 = cpu_to_le32(des);
 
 	/* Fill start of payload in buff2 of first descriptor */
 	if (pay_len)
-		first->des1 =  des + proto_hdr_len;
+		first->des1 = cpu_to_le32(des + proto_hdr_len);
 
 	/* If needed take extra descriptors to fill the remaining payload */
 	tmp_pay_len = pay_len - TSO_MAX_BUFF_SIZE;
@@ -2241,13 +2241,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 
 		priv->tx_skbuff[entry] = NULL;
 
-		if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00)) {
-			desc->des0 = des;
-			priv->tx_skbuff_dma[entry].buf = desc->des0;
-		} else {
-			desc->des2 = des;
-			priv->tx_skbuff_dma[entry].buf = desc->des2;
-		}
+		priv->tx_skbuff_dma[entry].buf = des;
+		if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
+			desc->des0 = cpu_to_le32(des);
+		else
+			desc->des2 = cpu_to_le32(des);
 
 		priv->tx_skbuff_dma[entry].map_as_page = true;
 		priv->tx_skbuff_dma[entry].len = len;
@@ -2318,13 +2316,11 @@ static netdev_tx_t stmmac_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (dma_mapping_error(priv->device, des))
 			goto dma_map_err;
 
-		if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00)) {
-			first->des0 = des;
-			priv->tx_skbuff_dma[first_entry].buf = first->des0;
-		} else {
-			first->des2 = des;
-			priv->tx_skbuff_dma[first_entry].buf = first->des2;
-		}
+		priv->tx_skbuff_dma[first_entry].buf = des;
+		if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
+			first->des0 = cpu_to_le32(des);
+		else
+			first->des2 = cpu_to_le32(des);
 
 		priv->tx_skbuff_dma[first_entry].len = nopaged_len;
 		priv->tx_skbuff_dma[first_entry].last_segment = last_segment;
@@ -2438,10 +2434,10 @@ static inline void stmmac_rx_refill(struct stmmac_priv *priv)
 			}
 
 			if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00)) {
-				p->des0 = priv->rx_skbuff_dma[entry];
+				p->des0 = cpu_to_le32(priv->rx_skbuff_dma[entry]);
 				p->des1 = 0;
 			} else {
-				p->des2 = priv->rx_skbuff_dma[entry];
+				p->des2 = cpu_to_le32(priv->rx_skbuff_dma[entry]);
 			}
 			if (priv->hw->mode->refill_desc3)
 				priv->hw->mode->refill_desc3(priv, p);
@@ -2542,9 +2538,9 @@ static int stmmac_rx(struct stmmac_priv *priv, int limit)
 			unsigned int des;
 
 			if (unlikely(priv->synopsys_id >= DWMAC_CORE_4_00))
-				des = p->des0;
+				des = le32_to_cpu(p->des0);
 			else
-				des = p->des2;
+				des = le32_to_cpu(p->des2);
 
 			frame_len = priv->hw->desc->get_rx_frame_len(p, coe);
 
@@ -2901,14 +2897,17 @@ static void sysfs_display_ring(void *head, int size, int extend_desc,
 			x = *(u64 *) ep;
 			seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
 				   i, (unsigned int)virt_to_phys(ep),
-				   ep->basic.des0, ep->basic.des1,
-				   ep->basic.des2, ep->basic.des3);
+				   le32_to_cpu(ep->basic.des0),
+				   le32_to_cpu(ep->basic.des1),
+				   le32_to_cpu(ep->basic.des2),
+				   le32_to_cpu(ep->basic.des3));
 			ep++;
 		} else {
 			x = *(u64 *) p;
 			seq_printf(seq, "%d [0x%x]: 0x%x 0x%x 0x%x 0x%x\n",
 				   i, (unsigned int)virt_to_phys(ep),
-				   p->des0, p->des1, p->des2, p->des3);
+				   le32_to_cpu(p->des0), le32_to_cpu(p->des1),
+				   le32_to_cpu(p->des2), le32_to_cpu(p->des3));
 			p++;
 		}
 		seq_printf(seq, "\n");