On 09/18/2015 12:19 AM, Arnd Bergmann wrote:
On Thursday 17 September 2015 15:41:33 David Daney wrote:
From: David Daney <david.daney@xxxxxxxxxx>
The on-chip devices all have fixed bars. So, fix them up.
Signed-off-by: David Daney <david.daney@xxxxxxxxxx>
You should be able to just mark the BARs as fixed in DT
In the case of ACPI, there is no DT. So we would need a different
solution for ACPI. What would you recommend for ACPI?
Also, can you point me to the OF device tree specification where it
tells how to specify PCI BAR addresses, I would especially be interested
in knowing how to specify fixed SRIOV BAR addresses in the device tree.
Thanks,
David Daney
and not need
this hack.
Yes, it is a bit of a hack. That is why I put it in its own file, and
only try to hack up PCI devices that exactly match the vendor and device
ids that need fixing.
IMHO, putting infrastructure into drivers/pci/probe.c, et al. to handle
this would be much more intrusive.
For the record: The PCI Enhanced Allocation (EA) capability (approved
by PCI SIG on 23 October 2014) is the proper way to handle this going
forward. However, this is not yet implemented in the SoCs that this
patch addresses. Our plan is to implement the EA capability in the core
PCI code, so that we do not need to keep adding devices to this fixup code.
David Daney
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