diff options
| author | Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2014-11-04 09:15:48 +0900 |
|---|---|---|
| committer | Nobuhiro Iwamatsu <iwamatsu@nigauri.org> | 2014-11-04 09:28:47 +0900 |
| commit | f7ca1f76fd01f3fc7e75fb3fd801c7bef16598db (patch) | |
| tree | 72b9783e4ca950f2d288838e1802a1de5f8a9379 /drivers/net | |
| parent | 000889cdb928bbe92440181331702b0eb8e6110b (diff) | |
net: sh-eth: Add cache writeback control after setting bit of DMA descriptor
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.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/sh_eth.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c index d1d3b6898d..4bf493ed45 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 <carlos@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 >= |