tree 1d2488426fee5eab5a30fc4683e359c6e9f2c07b
parent 32a47e72c9eb17e3b1bb507184e788b10d69ad4b
author Yuval Mintz <Yuval.Mintz@qlogic.com> 1462973773 +0300
committer David S. Miller <davem@davemloft.net> 1463025847 -0400

qed: Add VF->PF channel infrastructure

Communication between VF and PF is based on a dedicated HW channel;
VF will prepare a messge, and by signaling the HW the PF would get a
notification of that message existance. The PF would then copy the
message, process it and DMA an answer back to the VF as a response.

The messages themselves are TLV-based - allowing easier backward/forward
compatibility.

This patch adds the infrastructure of the channel on the PF side -
starting with the arrival of the notification and ending with DMAing
the response back to the VF.

It also adds a dummy-response as reference, as it only lays the
groundwork of the communication; it doesn't really add support of any
actual messages.

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