[PATCH v7 2/3] PCI: Add support for PCI inbound windows resources

Bjorn Helgaas bhelgaas at google.com
Tue May 30 15:42:46 PDT 2017


On Mon, May 22, 2017 at 11:39 AM, Oza Pawandeep <oza.oza at broadcom.com> wrote:
> This patch adds support for inbound memory window
> for PCI RC drivers.
>
> It defines new function pci_create_root_bus2 which
> takes inbound resources as an argument and fills in the
> memory resource to PCI internal host bridge structure
> as inbound_windows.
>
> Legacy RC driver could continue to use pci_create_root_bus,
> but any RC driver who wants to reseve IOVAS for their
> inbound memory holes, should use new API pci_create_root_bus2.
>
> Signed-off-by: Oza Pawandeep <oza.oza at broadcom.com>
> ...

> +struct pci_bus *pci_create_root_bus2(struct device *parent, int bus,
> +               struct pci_ops *ops, void *sysdata, struct list_head *resources,
> +               struct list_head *in_res)
> +{
> +       return pci_create_root_bus_msi(parent, bus, ops, sysdata,
> +                                      resources, in_res, NULL);
> +}
> +EXPORT_SYMBOL_GPL(pci_create_root_bus2);

Based on your response to Lorenzo's "[RFC/RFT PATCH 03/18] PCI:
Introduce pci_scan_root_bus_bridge()", I'm hoping you can avoid adding
yet another variant of pci_create_root_bus().

So I think I can wait for that to settle out and look for a v8?

Bjorn



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