Re: [Xen-devel] [PATCH 16/16] HACK: xen: arm: map PCI controller ranges region MMIOs to dom0.

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 11/20/2013 02:48 PM, Ian Campbell wrote:
> The ranges property of a node with device_type = "pci" is defined in ePAPR
> 2.3.8. Map the appropriate MMIO regions through to dom0.
>
> This is a hack/PoC since it actually crashes for some reason. Hence it
> contains a hacked in hardcoded list suitable for Xgene while I figure this
> out.
>
> This should also eventually handle the interrupt-map and (ePAPR 2.4.3.1) and
> possibly dma-ranges (ePAPR 2.3.9) and msi-ranges (unspeciifed?) too.

For pci ranges, you can add a new bus in dt_bues. So you won't need 
specific code in domain_build.c and we will be able to use it later.
You can take a look to linux/drivers/of/address.c

Mapping interrupt should be OK. I don't see any reason that will fail 
with the current code because IRQ are all under the GIC controller.
--
Julien Grall

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