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authorAuke Kok <auke-jan.h.kok@intel.com>2008-02-11 09:25:56 -0800
committerJeff Garzik <jeff@garzik.org>2008-02-11 14:51:40 -0500
commit0c254d863338ceff630814bf17cf8e4b61cb8aa3 (patch)
treeffad0ddfa0fbd201df414eecc4502afa8e979424
parent23b66e2bc2bcebacab7292d7731b7372065b3f98 (diff)
ixgbe: warn when device is in a x4 or lower width slot
It's easy to oversee this issue when working with this card as evrything will work OK but performance is severely limited (something like 1.5gbit on a x1 link) if the pci-express slot does not offer more bandwidth. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
-rw-r--r--drivers/net/ixgbe/ixgbe_main.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/net/ixgbe/ixgbe_main.c b/drivers/net/ixgbe/ixgbe_main.c
index ead49e54f31..576fb51eb74 100644
--- a/drivers/net/ixgbe/ixgbe_main.c
+++ b/drivers/net/ixgbe/ixgbe_main.c
@@ -2778,6 +2778,14 @@ static int __devinit ixgbe_probe(struct pci_dev *pdev,
hw->mac.type, hw->phy.type,
(part_num >> 8), (part_num & 0xff));
+ if (link_width <= IXGBE_PCI_LINK_WIDTH_4) {
+ dev_warn(&pdev->dev, "PCI-Express bandwidth available for "
+ "this card is not sufficient for optimal "
+ "performance.\n");
+ dev_warn(&pdev->dev, "For optimal performance a x8 "
+ "PCI-Express slot is required.\n");
+ }
+
/* reset the hardware with the new settings */
ixgbe_start_hw(hw);