X-Git-Url: http://git.monstr.eu/?a=blobdiff_plain;f=drivers%2Fpci%2Fcontroller%2Fdwc%2Fpcie-designware-host.c;h=a6ffab9b537e42ef20adb3e79bff44672ff5e0fa;hb=9f9e59a4809563f24e3d1377aa804a4b7386a418;hp=674f32db85ca4ccf5935eb4b3ba59ecdbd7401a7;hpb=af0041875ce7f5a05362b884e90cf82c27876096;p=linux-2.6-microblaze.git

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 674f32db85ca..a6ffab9b537e 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -464,9 +464,7 @@ static void __iomem *dw_pcie_other_conf_map_bus(struct pci_bus *bus,
 		type = PCIE_ATU_TYPE_CFG1;
 
 
-	dw_pcie_prog_outbound_atu(pci, PCIE_ATU_REGION_INDEX1,
-				  type, pp->cfg0_base,
-				  busdev, pp->cfg0_size);
+	dw_pcie_prog_outbound_atu(pci, 0, type, pp->cfg0_base, busdev, pp->cfg0_size);
 
 	return pp->va_cfg0_base + where;
 }
@@ -480,9 +478,8 @@ static int dw_pcie_rd_other_conf(struct pci_bus *bus, unsigned int devfn,
 
 	ret = pci_generic_config_read(bus, devfn, where, size, val);
 
-	if (!ret && pci->num_viewport <= 2)
-		dw_pcie_prog_outbound_atu(pci, PCIE_ATU_REGION_INDEX1,
-					  PCIE_ATU_TYPE_IO, pp->io_base,
+	if (!ret && pci->io_cfg_atu_shared)
+		dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO, pp->io_base,
 					  pp->io_bus_addr, pp->io_size);
 
 	return ret;
@@ -497,9 +494,8 @@ static int dw_pcie_wr_other_conf(struct pci_bus *bus, unsigned int devfn,
 
 	ret = pci_generic_config_write(bus, devfn, where, size, val);
 
-	if (!ret && pci->num_viewport <= 2)
-		dw_pcie_prog_outbound_atu(pci, PCIE_ATU_REGION_INDEX1,
-					  PCIE_ATU_TYPE_IO, pp->io_base,
+	if (!ret && pci->io_cfg_atu_shared)
+		dw_pcie_prog_outbound_atu(pci, 0, PCIE_ATU_TYPE_IO, pp->io_base,
 					  pp->io_bus_addr, pp->io_size);
 
 	return ret;
@@ -586,17 +582,35 @@ void dw_pcie_setup_rc(struct pcie_port *pp)
 	 * ATU, so we should not program the ATU here.
 	 */
 	if (pp->bridge->child_ops == &dw_child_pcie_ops) {
-		struct resource_entry *entry =
-			resource_list_first_type(&pp->bridge->windows, IORESOURCE_MEM);
-
-		dw_pcie_prog_outbound_atu(pci, PCIE_ATU_REGION_INDEX0,
-					  PCIE_ATU_TYPE_MEM, entry->res->start,
-					  entry->res->start - entry->offset,
-					  resource_size(entry->res));
-		if (pci->num_viewport > 2)
-			dw_pcie_prog_outbound_atu(pci, PCIE_ATU_REGION_INDEX2,
-						  PCIE_ATU_TYPE_IO, pp->io_base,
-						  pp->io_bus_addr, pp->io_size);
+		int atu_idx = 0;
+		struct resource_entry *entry;
+
+		/* Get last memory resource entry */
+		resource_list_for_each_entry(entry, &pp->bridge->windows) {
+			if (resource_type(entry->res) != IORESOURCE_MEM)
+				continue;
+
+			if (pci->num_viewport <= ++atu_idx)
+				break;
+
+			dw_pcie_prog_outbound_atu(pci, atu_idx,
+						  PCIE_ATU_TYPE_MEM, entry->res->start,
+						  entry->res->start - entry->offset,
+						  resource_size(entry->res));
+		}
+
+		if (pp->io_size) {
+			if (pci->num_viewport > ++atu_idx)
+				dw_pcie_prog_outbound_atu(pci, atu_idx,
+							  PCIE_ATU_TYPE_IO, pp->io_base,
+							  pp->io_bus_addr, pp->io_size);
+			else
+				pci->io_cfg_atu_shared = true;
+		}
+
+		if (pci->num_viewport <= atu_idx)
+			dev_warn(pci->dev, "Resources exceed number of ATU entries (%d)",
+				 pci->num_viewport);
 	}
 
 	dw_pcie_writel_dbi(pci, PCI_BASE_ADDRESS_0, 0);