commit e84634dc6c7f3f6af9b8ef1fb36f0d85c476ab95
Author: Tim Harvey <tharvey@gateworks.com>
Date:   Thu Feb 27 01:02:23 2014 -0800

    PCI: designware: add ability for custom swizzle
    
    Add the ability for a platform driver to provide a platform-specific
    swizzle function.
    
    Signed-off-by: Tim Harvey <tharvey@gateworks.com>

--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -492,6 +492,9 @@ int dw_pcie_host_init(struct pcie_port *
 	if (pp->ops->host_init)
 		pp->ops->host_init(pp);
 
+	if (pp->swizzle)
+		dw_pci.swizzle = pp->swizzle;
+
 	dw_pcie_wr_own_conf(pp, PCI_BASE_ADDRESS_0, 4, 0);
 
 	/* program correct class for RC */
--- a/drivers/pci/host/pcie-designware.h
+++ b/drivers/pci/host/pcie-designware.h
@@ -53,6 +53,7 @@ struct pcie_port {
 	struct irq_domain	*irq_domain;
 	unsigned long		msi_data;
 	DECLARE_BITMAP(msi_irq_in_use, MAX_MSI_IRQS);
+	u8			(*swizzle)(struct pci_dev *, u8 *);
 };
 
 struct pcie_host_ops {
