On Sat, Oct 3, 2015 at 5:56 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Friday 02 October 2015 15:53:44 Ley Foon Tan wrote: >> > Strictly speaking, if you have undocumented bindings downstream that >> > is your problem and we don't have to accept them as-is upstream. I'm >> > not going to worry about that here. >> > >> >>> txs contains the config space? >> >> It is not the config space, but a memory slave port. >> > >> > Then where is the config space? It should not be part of "ranges" is >> > all I care about. >> The config space is not part of "ranges". Our IP uses TLP packet to >> access config space. >> > > It took me a bit to figure out what you mean here. To save others > from reading the source, here is what I found: > > * The config space is accessed indirectly through registers from the > "cra" register range, which is the right approach according to the > point that Rob made. You are right. > * hardware-wise this basically looks like bit-banged PCIe, which is > both awesome and scary ;-) -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
