[U-Boot] [PATCH] net: ftgmac100: align RX/TX descriptors on ARCH_DMA_MINALIGN

[Cédric Le Goater]

Fixes: e766849713ff ("net: ftgmac100: convert the RX/TX descriptor arrays")
Signed-off-by: Cédric Le Goater <clg at kaod.org>
---
 drivers/net/ftgmac100.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/net/ftgmac100.c b/drivers/net/ftgmac100.c
index 92c38a81bd35..c14647af7844 100644
--- a/drivers/net/ftgmac100.c
+++ b/drivers/net/ftgmac100.c
@@ -71,8 +71,8 @@ enum ftgmac100_model {
 struct ftgmac100_data {
 	struct ftgmac100 *iobase;
 
-	struct ftgmac100_txdes txdes[PKTBUFSTX];
-	struct ftgmac100_rxdes rxdes[PKTBUFSRX];
+	struct ftgmac100_txdes txdes[PKTBUFSTX] __aligned(ARCH_DMA_MINALIGN);
+	struct ftgmac100_rxdes rxdes[PKTBUFSRX] __aligned(ARCH_DMA_MINALIGN);
 	int tx_index;
 	int rx_index;
 
@@ -309,7 +309,7 @@ static int ftgmac100_start(struct udevice *dev)
 	}
 	priv->txdes[PKTBUFSTX - 1].txdes0 = priv->txdes0_edotr_mask;
 
-	start = (ulong)&priv->txdes[0];
+	start = ((ulong)&priv->txdes[0]) & ~(ARCH_DMA_MINALIGN - 1);
 	end = start + roundup(sizeof(priv->txdes), ARCH_DMA_MINALIGN);
 	flush_dcache_range(start, end);
 
@@ -319,7 +319,7 @@ static int ftgmac100_start(struct udevice *dev)
 	}
 	priv->rxdes[PKTBUFSRX - 1].rxdes0 = priv->rxdes0_edorr_mask;
 
-	start = (ulong)&priv->rxdes[0];
+	start = ((ulong)&priv->rxdes[0]) & ~(ARCH_DMA_MINALIGN - 1);
 	end = start + roundup(sizeof(priv->rxdes), ARCH_DMA_MINALIGN);
 	flush_dcache_range(start, end);
 
@@ -369,7 +369,7 @@ static int ftgmac100_free_pkt(struct udevice *dev, uchar *packet, int length)
 {
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100_rxdes *curr_des = &priv->rxdes[priv->rx_index];
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 
@@ -391,7 +391,7 @@ static int ftgmac100_recv(struct udevice *dev, int flags, uchar **packetp)
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100_rxdes *curr_des = &priv->rxdes[priv->rx_index];
 	unsigned short rxlen;
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 	ulong data_start = curr_des->rxdes3;
@@ -426,7 +426,7 @@ static int ftgmac100_recv(struct udevice *dev, int flags, uchar **packetp)
 static u32 ftgmac100_read_txdesc(const void *desc)
 {
 	const struct ftgmac100_txdes *txdes = desc;
-	ulong des_start = (ulong)txdes;
+	ulong des_start = ((ulong)txdes) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start + roundup(sizeof(*txdes), ARCH_DMA_MINALIGN);
 
 	invalidate_dcache_range(des_start, des_end);
@@ -444,7 +444,7 @@ static int ftgmac100_send(struct udevice *dev, void *packet, int length)
 	struct ftgmac100_data *priv = dev_get_priv(dev);
 	struct ftgmac100 *ftgmac100 = priv->iobase;
 	struct ftgmac100_txdes *curr_des = &priv->txdes[priv->tx_index];
-	ulong des_start = (ulong)curr_des;
+	ulong des_start = ((ulong)curr_des) & ~(ARCH_DMA_MINALIGN - 1);
 	ulong des_end = des_start +
 		roundup(sizeof(*curr_des), ARCH_DMA_MINALIGN);
 	ulong data_start;
-- 
2.21.0