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

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

This should also eventually handle the interrupt-map and (ePAPR 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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