> Nice discussion, again, but there's a missing point that has not been > brought up yet. We actually intend to support the following hardware > configuration: a single PCI device consisting of the Microsemi's switch core > and our DMA rings. > The hardware supports this configuration into a single PCI function (PF), > with a unique PCI function id (0xe111), so that the same driver has access to > both switch registers and DMA rings connected to the CPU port. This device > would qualify as a switchdev device, and we can simply reuse the existing > ocelot code for the switch core part. The initial patch set was the first > step in > supporting the switch core on our platform, we just need to add the support > for the DMA rings part, to make it a complete switchdev solution.
Hi Claudiu It sound like in the end you will have a core library and then two drivers wrapped around it, giving a pure switchdev device with polled IO or DMA, and a DSA driver using a CPU port. Andrew
