Tested-by: Mei,JianweiX < [email protected]> -----Original Message----- From: dev <[email protected]> On Behalf Of [email protected] Sent: Wednesday, September 9, 2020 6:47 AM To: Zhang, Qi Z <[email protected]>; Guo, Jia <[email protected]> Cc: [email protected]; Fu, YanX <[email protected]>; [email protected] Subject: [dpdk-dev] [PATCH v1 1/1] net/ice: fix link status down
From: FuYanX <[email protected]> Add delay to ensure that the hardware FLR is completed. Fixes: f9cf4f864150 (net/ice: support device initialization) Cc: [email protected] Signed-off-by: FuYanX <[email protected]> --- 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
