powerpc/powernv: Discover IODA3 PHBs

We instanciate them as IODA2. We also change the MSI EOI hack
to only kick on PHB3 since it will not be needed on any new
implementation.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/platforms/powernv/pci-ioda.c

@@ -2705,7 +2705,8 @@ void pnv_set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq)
 	struct irq_data *idata;
 	struct irq_chip *ichip;
 
-	if (phb->type != PNV_PHB_IODA2)
+	/* The MSI EOI OPAL call is only needed on PHB3 */
+	if (phb->model != PNV_PHB_MODEL_PHB3)
 		return;
 
 	if (!phb->ioda.irq_chip_init) {

arch/powerpc/platforms/powernv/pci.c

@@ -932,6 +932,10 @@ void __init pnv_pci_init(void)
 	for_each_compatible_node(np, NULL, "ibm,ioda2-phb")
 		pnv_pci_init_ioda2_phb(np);
 
+	/* Look for ioda3 built-in PHB4's, we treat them as IODA2 */
+	for_each_compatible_node(np, NULL, "ibm,ioda3-phb")
+		pnv_pci_init_ioda2_phb(np);
+
 	/* Look for NPU PHBs */
 	for_each_compatible_node(np, NULL, "ibm,ioda2-npu-phb")
 		pnv_pci_init_npu_phb(np);