[PATCH 05/19] net/txgbe: reconfigure more MAC Rx registers

[Jiawen Wu <jiawenwu@trustnetic.com>]

When link status changes, there is a probability that no more packets can
be received on the port, due to hardware defects. These MAC Rx registers
should be reconfigured to fix this problem.

Fixes: 950a6954df13 ("net/txgbe: reconfigure MAC Rx when link update")
Cc: stable@dpdk.org

Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
---
 drivers/net/txgbe/base/txgbe_regs.h | 2 ++
 drivers/net/txgbe/txgbe_ethdev.c    | 8 +++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/net/txgbe/base/txgbe_regs.h b/drivers/net/txgbe/base/txgbe_regs.h
index 86896d11dc..a2984f1106 100644
--- a/drivers/net/txgbe/base/txgbe_regs.h
+++ b/drivers/net/txgbe/base/txgbe_regs.h
@@ -1022,6 +1022,8 @@ enum txgbe_5tuple_protocol {
 #define   TXGBE_MACRXFLT_CTL_PASS       LS(3, 6, 0x3)
 #define   TXGBE_MACRXFLT_RXALL          MS(31, 0x1)
 
+#define TXGBE_MAC_WDG_TIMEOUT           0x01100C
+
 /******************************************************************************
  * Statistic Registers
  ******************************************************************************/
diff --git a/drivers/net/txgbe/txgbe_ethdev.c b/drivers/net/txgbe/txgbe_ethdev.c
index a59d964a5b..699ff1c920 100644
--- a/drivers/net/txgbe/txgbe_ethdev.c
+++ b/drivers/net/txgbe/txgbe_ethdev.c
@@ -2879,6 +2879,7 @@ txgbe_dev_link_update_share(struct rte_eth_dev *dev,
 	bool link_up;
 	int err;
 	int wait = 1;
+	u32 reg;
 
 	memset(&link, 0, sizeof(link));
 	link.link_status = RTE_ETH_LINK_DOWN;
@@ -2968,9 +2969,14 @@ txgbe_dev_link_update_share(struct rte_eth_dev *dev,
 	}
 
 	/* Re configure MAC RX */
-	if (hw->mac.type == txgbe_mac_raptor)
+	if (hw->mac.type == txgbe_mac_raptor) {
+		reg = rd32(hw, TXGBE_MACRXCFG);
+		wr32(hw, TXGBE_MACRXCFG, reg);
 		wr32m(hw, TXGBE_MACRXFLT, TXGBE_MACRXFLT_PROMISC,
 			TXGBE_MACRXFLT_PROMISC);
+		reg = rd32(hw, TXGBE_MAC_WDG_TIMEOUT);
+		wr32(hw, TXGBE_MAC_WDG_TIMEOUT, reg);
+	}
 
 	return rte_eth_linkstatus_set(dev, &link);
 }
-- 
2.27.0