On Sat, Jan 24, 2026 at 11:50:08PM +0900, Koichiro Den wrote: > Extend dw_pcie_ep_set_bar() to support inbound mappings for BAR > subranges using Address Match Mode IB iATU when pci_epf_bar.num_submap > is non-zero. > > Rename the existing BAR-match helper into dw_pcie_ep_ib_atu_bar() and > introduce dw_pcie_ep_ib_atu_addr() for Address Match Mode. When > num_submap is non-zero, read the assigned BAR base address and program > one inbound iATU window per subrange. Validate the submap array before > programming: > - each subrange is aligned to pci->region_align > - subranges cover the whole BAR (no gaps and no overlaps) > > Track Address Match Mode mappings and tear them down on clear_bar() and > on set_bar() error paths to avoid leaving half-programmed state or > untranslated BAR holes. > > Advertise this capability by extending the common feature bit > initializer macro (DWC_EPC_COMMON_FEATURES). > > This enables multiple inbound windows within a single BAR, which is > useful on platforms where usable BARs are scarce but EPFs need multiple > inbound regions. > > Reviewed-by: Frank Li <[email protected]> > Signed-off-by: Koichiro Den <[email protected]> > ---
Reviewed-by: Niklas Cassel <[email protected]>
