PCI: designware: Keep viewport fixed for IO transaction if num_viewport > 2
Most of the platforms have 3 or more viewports. For such platforms, We do
not need to share viewports between IO and CFG. Assign viewport 2 to IO
transactions in such cases.
Tested-by: Dong Bo <dongbo4@huawei.com>
Signed-off-by: Pratyush Anand <pratyush.anand@gmail.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
diff --git a/drivers/pci/host/pcie-designware.h b/drivers/pci/host/pcie-designware.h
index e74cc4a..c8e5bc6 100644
--- a/drivers/pci/host/pcie-designware.h
+++ b/drivers/pci/host/pcie-designware.h
@@ -44,6 +44,7 @@
struct resource *busn;
int irq;
u32 lanes;
+ u32 num_viewport;
struct pcie_host_ops *ops;
int msi_irq;
struct irq_domain *irq_domain;