A bit field of DMA descriptor is on memory area of DMA. If we set data
to bit of DMA descriptor, we must be writeback data of DMA descriptor.
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu...@renesas.com>
---
drivers/net/sh_eth.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index d1d3b68..4bf493e 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -2,9 +2,9 @@
* sh_eth.c - Driver for Renesas ethernet controler.
*
* Copyright (C) 2008, 2011 Renesas Solutions Corp.
- * Copyright (c) 2008, 2011 Nobuhiro Iwamatsu
+ * Copyright (c) 2008, 2011, 2014 2014 Nobuhiro Iwamatsu
* Copyright (c) 2007 Carlos Munoz <car...@kenati.com>
- * Copyright (C) 2013 Renesas Electronics Corporation
+ * Copyright (C) 2013, 2014 Renesas Electronics Corporation
*
* SPDX-License-Identifier: GPL-2.0+
*/
@@ -83,6 +83,8 @@ int sh_eth_send(struct eth_device *dev, void *packet, int len)
else
port_info->tx_desc_cur->td0 = TD_TACT | TD_TFP;
+ flush_cache_wback(port_info->tx_desc_cur, sizeof(struct tx_desc_s));
+
/* Restart the transmitter if disabled */
if (!(sh_eth_read(eth, EDTRR) & EDTRR_TRNS))
sh_eth_write(eth, EDTRR_TRNS, EDTRR);
@@ -133,6 +135,10 @@ int sh_eth_recv(struct eth_device *dev)
port_info->rx_desc_cur->rd0 = RD_RACT | RD_RDLE;
else
port_info->rx_desc_cur->rd0 = RD_RACT;
+
+ flush_cache_wback(port_info->rx_desc_cur,
+ sizeof(struct rx_desc_s));
+
/* Point to the next descriptor */
port_info->rx_desc_cur++;
if (port_info->rx_desc_cur >=
--
2.1.1
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