net/mlx4_core: Warn if device doesn't have enough PCI bandwidth

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Check if the device get enough bandwidth from the entire PCI chain to satisfy
its capabilities. This patch determines the PCIe device's bandwidth capabilities
by reading its PCIe Link Capabilities registers and then call the
pcie_get_minimum_link function to ensure that the adapter is hooked into a slot
which is capable of providing the necessary bandwidth capabilities.

Signed-off-by: Eyal Perry <eyalpe@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eyal Perry 2014-01-05 17:41:08 +02:00 • committed by David S. Miller

parent 3a2e15df50

commit b912b2f8fc

1 changed files with 84 additions and 0 deletions

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drivers/net/ethernet/mellanox/mlx4/main.c

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