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From: Aaron Ma <aaron.ma@canonical.com>
To: jesse.brandeburg@intel.com, aaron.ma@canonical.com,
	anthony.l.nguyen@intel.com, davem@davemloft.net, kuba@kernel.org,
	intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH 2/2] igc: wait for the MAC copy when enabled MAC passthrough
Date: Fri,  2 Jul 2021 12:51:20 +0800	[thread overview]
Message-ID: <20210702045120.22855-2-aaron.ma@canonical.com> (raw)
In-Reply-To: <20210702045120.22855-1-aaron.ma@canonical.com>

Such as dock hot plug event when runtime, for hardware implementation,
the MAC copy takes less than one second when BIOS enabled MAC passthrough.
After test on Lenovo TBT4 dock, 600ms is enough to update the
MAC address.
Otherwise ethernet fails to work.

Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
---
 drivers/net/ethernet/intel/igc/igc_main.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 606b72cb6193..c8bc5f089255 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -5468,6 +5468,9 @@ static int igc_probe(struct pci_dev *pdev,
 	memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops));
 	memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops));
 
+	if (pci_is_thunderbolt_attached(pdev))
+		msleep(600);
+
 	/* Initialize skew-specific constants */
 	err = ei->get_invariants(hw);
 	if (err)
-- 
2.30.2


  reply	other threads:[~2021-07-02  4:51 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-02  4:51 [PATCH 1/2] igc: don't rd/wr iomem when PCI is removed Aaron Ma
2021-07-02  4:51 ` Aaron Ma [this message]
2021-07-04  5:36   ` [Intel-wired-lan] [PATCH 2/2] igc: wait for the MAC copy when enabled MAC passthrough Neftin, Sasha
2021-07-05  7:38     ` Aaron Ma
2021-07-05 11:54       ` Neftin, Sasha
2021-07-06  6:46         ` Aaron Ma
2021-07-08  4:24           ` Neftin, Sasha
2021-07-13 13:45             ` Aaron Ma
2021-07-14  9:13               ` Ruinskiy, Dima
2021-07-04 14:28 ` [PATCH 1/2] igc: don't rd/wr iomem when PCI is removed Pali Rohár
2021-07-05  7:23   ` Aaron Ma
2021-07-05 23:02   ` Krzysztof Wilczyński
2021-07-06 14:23     ` Pali Rohár
2021-07-05  7:47 ` Dave Airlie
2021-07-06  6:42   ` Aaron Ma
2021-07-06 20:12 ` Bjorn Helgaas
2021-07-07 21:53   ` Pali Rohár
2021-07-07 22:10     ` Bjorn Helgaas
2021-07-08  2:04       ` Oliver O'Halloran
2021-07-08 15:45         ` Bjorn Helgaas
2021-07-18 16:31           ` Oliver O'Halloran
2021-07-18 22:50             ` Pali Rohár
2021-07-19  2:49               ` Oliver O'Halloran
2021-07-19  8:13                 ` Pali Rohár
2021-07-20  0:17                 ` Bjorn Helgaas
2021-07-13 13:00 ` [PATCH v2] igc: fix page fault when thunderbolt is unplugged Aaron Ma
2021-08-04 12:06   ` [Intel-wired-lan] " Fuxbrumer, Dvora

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