pci-hotplug/pnv_php: Add support for IODA3 Power9 PHBs

Currently we check that an IODA2 compatible PHB is upstream of this slot.
This is mainly to avoid pnv_php creating slots for the various "virtual
PHBs" that we create for NVLink. There's no real need for this restriction
so allow it on IODA3.

Signed-off-by: Oliver O'Halloran <[email protected]>
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: oohal

arch/powerpc/platforms/powernv/pci.c

@@ -54,7 +54,8 @@ int pnv_pci_get_slot_id(struct device_node *np, uint64_t *id)
 			break;
 		}
 
-		if (!of_device_is_compatible(parent, "ibm,ioda2-phb")) {
+		if (!of_device_is_compatible(parent, "ibm,ioda2-phb") &&
+		    !of_device_is_compatible(parent, "ibm,ioda3-phb")) {
 			of_node_put(parent);
 			continue;
 		}

drivers/pci/hotplug/pnv_php.c

@@ -994,6 +994,9 @@ static int __init pnv_php_init(void)
 	for_each_compatible_node(dn, NULL, "ibm,ioda2-phb")
 		pnv_php_register(dn);
 
+	for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
+		pnv_php_register(dn);
+
 	return 0;
 }
 
@@ -1003,6 +1006,9 @@ static void __exit pnv_php_exit(void)
 
 	for_each_compatible_node(dn, NULL, "ibm,ioda2-phb")
 		pnv_php_unregister(dn);
+
+	for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
+		pnv_php_unregister(dn);
 }
 
 module_init(pnv_php_init);