patches for DPDK stable branches
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From: yanx.fu@intel.com
To: qi.z.zhang@intel.com, jia.guo@intel.com
Cc: dev@dpdk.org, FuYanX <yanx.fu@intel.com>, stable@dpdk.org
Subject: [dpdk-stable] [dpdk-dev][PATCH v1 1/1] net/ice: fix link status down
Date: Tue,  8 Sep 2020 22:47:14 +0000
Message-ID: <20200908224714.91088-1-yanx.fu@intel.com> (raw)

From: FuYanX <yanx.fu@intel.com>

Add delay to ensure that the hardware FLR is completed.

Fixes: f9cf4f864150 (net/ice: support device initialization)
Cc: stable@dpdk.org

Signed-off-by: FuYanX <yanx.fu@intel.com>
---
 drivers/net/ice/ice_ethdev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/ice/ice_ethdev.c b/drivers/net/ice/ice_ethdev.c
index 8d435e889..20bd85e62 100644
--- a/drivers/net/ice/ice_ethdev.c
+++ b/drivers/net/ice/ice_ethdev.c
@@ -2176,6 +2176,11 @@ ice_dev_init(struct rte_eth_dev *dev)
 
 	ice_init_controlq_parameter(hw);
 
+	/* The driver e.g. vfio-pci may triggle a FLR reset.
+	 * The operating system is required by PCIe specification to wait 100 ms
+	 * before it can assume that the FLR sequence is completed by hardware.
+	 */
+	rte_delay_ms(100);
 	ret = ice_init_hw(hw);
 	if (ret) {
 		PMD_INIT_LOG(ERR, "Failed to initialize HW");
-- 
2.25.1


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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-08 22:47 yanx.fu [this message]
2020-09-15  6:54 ` [dpdk-stable] [dpdk-dev] [PATCH " Mei, JianweiX

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