qed: Move doorbell calculation from VF to PF

Browse source

Today, the VF is aware of its queues context-ids, and calculates the
doorbell address when opening its queues on its own.
The configuration of doorbells in HW can sometime in the future be changed
by the PF [hw has several configurable features that might affect doorbell
addresses, e.g., dpm support], this would break compatibility with older
VFs as their calculated doorbell addresses would be incorrect for such a
configuration.

In order to avoid such a backward compatibility failure, let the PF make
the calculation of the doorbell offset based on the context-id, and pass
that to the VF.

Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Yuval Mintz 2016-06-05 13:11:14 +03:00 • committed by David S. Miller

parent 41086467d6

commit 5040acf537

2 changed files with 38 additions and 11 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

29

drivers/net/ethernet/qlogic/qed/qed_sriov.c

View file

20

drivers/net/ethernet/qlogic/qed/qed_vf.c

View file