1 files changed, 24 insertions, 4 deletions

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 20c9333bcb1c..e92513c5bda5 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -23,6 +23,7 @@
 #include "pcie-designware.h"
 
 static struct pci_ops dw_pcie_ops;
+static struct pci_ops dw_pcie_ecam_ops;
 static struct pci_ops dw_child_pcie_ops;
 
 #define DW_PCIE_MSI_FLAGS_REQUIRED (MSI_FLAG_USE_DEF_DOM_OPS		| \
@@ -471,9 +472,6 @@ static int dw_pcie_create_ecam_window(struct dw_pcie_rp *pp, struct resource *re
 	if (IS_ERR(pp->cfg))
 		return PTR_ERR(pp->cfg);
 
-	pci->dbi_base = pp->cfg->win;
-	pci->dbi_phys_addr = res->start;
-
 	return 0;
 }
 
@@ -529,7 +527,7 @@ static int dw_pcie_host_get_resources(struct dw_pcie_rp *pp)
 		if (ret)
 			return ret;
 
-		pp->bridge->ops = (struct pci_ops *)&pci_generic_ecam_ops.pci_ops;
+		pp->bridge->ops = &dw_pcie_ecam_ops;
 		pp->bridge->sysdata = pp->cfg;
 		pp->cfg->priv = pp;
 	} else {
@@ -842,12 +840,34 @@ void __iomem *dw_pcie_own_conf_map_bus(struct pci_bus *bus, unsigned int devfn,
 }
 EXPORT_SYMBOL_GPL(dw_pcie_own_conf_map_bus);
 
+static void __iomem *dw_pcie_ecam_conf_map_bus(struct pci_bus *bus, unsigned int devfn, int where)
+{
+	struct pci_config_window *cfg = bus->sysdata;
+	struct dw_pcie_rp *pp = cfg->priv;
+	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);
+	unsigned int busn = bus->number;
+
+	if (busn > 0)
+		return pci_ecam_map_bus(bus, devfn, where);
+
+	if (PCI_SLOT(devfn) > 0)
+		return NULL;
+
+	return pci->dbi_base + where;
+}
+
 static struct pci_ops dw_pcie_ops = {
 	.map_bus = dw_pcie_own_conf_map_bus,
 	.read = pci_generic_config_read,
 	.write = pci_generic_config_write,
 };
 
+static struct pci_ops dw_pcie_ecam_ops = {
+	.map_bus = dw_pcie_ecam_conf_map_bus,
+	.read = pci_generic_config_read,
+	.write = pci_generic_config_write,
+};
+
 static int dw_pcie_iatu_setup(struct dw_pcie_rp *pp)
 {
 	struct dw_pcie *pci = to_dw_pcie_from_pp(pp);