On Wed, May 31, 2017 at 4:12 AM, Bjorn Helgaas [off-list ref] wrote:

On Mon, May 22, 2017 at 11:39 AM, Oza Pawandeep [off-list ref] wrote:

quoted

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 <redacted>
...

quoted

+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

Sure Bjorn, please wait for v8.

But there is one more associated patch
[PATCH v7 1/3] OF/PCI: Export inbound memory interface to PCI RC
which basically aims to provide an interface to RC drivers for their
inbound resources.
RC driver already get their outbound resources from
of_pci_get_host_bridge_resources,
similar attempt for inbound dma-ranges.

Thanking you for looking into this.

Regards,
Oza.