This patch series adds support for configuring the DesignWare IP's ATU region for prefetchable memory translations. It first starts by flagging a warning if the size of non-prefetchable aperture goes beyond 32-bit as PCIe spec doesn't allow it. And then adds required support for programming the ATU to handle higher (i.e. >4GB) sizes and then finally adds support for differentiating between prefetchable and non-prefetchable regions and configuring one of the ATU regions for prefetchable memory translations purpose.
Vidya Sagar (3): PCI: of: Warn if non-prefetchable memory aperture size is > 32-bit PCI: dwc: Add support to program ATU for >4GB memory aperture sizes PCI: dwc: Add support to handle prefetchable memory mapping .../pci/controller/dwc/pcie-designware-host.c | 39 ++++++++++++++++--- drivers/pci/controller/dwc/pcie-designware.c | 12 +++--- drivers/pci/controller/dwc/pcie-designware.h | 4 +- drivers/pci/of.c | 5 +++ 4 files changed, 48 insertions(+), 12 deletions(-) -- 2.17.1
