[PATCH V5 2/3] ARM64 LPC: Add missing range exception for special ISA
From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
Date: 2016-11-10 07:10:04
Also in:
linux-devicetree, linux-pci, linux-serial, lkml
On Wed, 2016-11-09 at 11:20 +0000, Mark Rutland wrote:
The big change would be to handle !MMIO translations, for which we'd need a runtime registry of ISA bus instance to find the relevant accessor ops and instance-specific data.
Yes. We do something a bit like that on ppc, we find the PCI bus for which the IO ports match and I have a hook to register the special indirect ISA. It's a bit messy, we could do something nicer generically. Cheers, Ben.