[PATCH 11/13] net/ngbe: reconfigure more MAC Rx registers

[Jiawen Wu]

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: b9246b8fa280 ("net/ngbe: support link update")
Fixes: a7c5f95ed9c2 ("net/ngbe: reconfigure MAC Rx when link update")
Cc: sta...@dpdk.org

Signed-off-by: Jiawen Wu <jiawe...@trustnetic.com>
---
 drivers/net/ngbe/base/ngbe_regs.h | 2 ++
 drivers/net/ngbe/ngbe_ethdev.c    | 6 ++++++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/ngbe/base/ngbe_regs.h 
b/drivers/net/ngbe/base/ngbe_regs.h
index 8a6776b0e6..b1295280a7 100644
--- a/drivers/net/ngbe/base/ngbe_regs.h
+++ b/drivers/net/ngbe/base/ngbe_regs.h
@@ -712,6 +712,8 @@ enum ngbe_5tuple_protocol {
 #define   NGBE_MACRXFLT_CTL_PASS       LS(3, 6, 0x3)
 #define   NGBE_MACRXFLT_RXALL          MS(31, 0x1)
 
+#define NGBE_MAC_WDG_TIMEOUT           0x01100C
+
 /******************************************************************************
  * Statistic Registers
  
******************************************************************************/
diff --git a/drivers/net/ngbe/ngbe_ethdev.c b/drivers/net/ngbe/ngbe_ethdev.c
index ba46dcf2a5..3ea7ed43ff 100644
--- a/drivers/net/ngbe/ngbe_ethdev.c
+++ b/drivers/net/ngbe/ngbe_ethdev.c
@@ -1934,6 +1934,7 @@ ngbe_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;
@@ -1991,8 +1992,13 @@ ngbe_dev_link_update_share(struct rte_eth_dev *dev,
                        wr32m(hw, NGBE_MACTXCFG, NGBE_MACTXCFG_SPEED_MASK,
                                NGBE_MACTXCFG_SPEED_1G | NGBE_MACTXCFG_TE);
                }
+               /* Re configure MAC RX */
+               reg = rd32(hw, NGBE_MACRXCFG);
+               wr32(hw, NGBE_MACRXCFG, reg);
                wr32m(hw, NGBE_MACRXFLT, NGBE_MACRXFLT_PROMISC,
                        NGBE_MACRXFLT_PROMISC);
+               reg = rd32(hw, NGBE_MAC_WDG_TIMEOUT);
+               wr32(hw, NGBE_MAC_WDG_TIMEOUT, reg);
        }
 
        return rte_eth_linkstatus_set(dev, &link);
-- 
2.27.0