Hi,

This is part 2 of three series for PCI endpoint DMA.

The three series are:

  * part 1: dmaengine: dw-edma: Prepare for PCI EP DMA
  * part 2: PCI: endpoint: Expose endpoint DMA resources
  * part 3: PCI: endpoint: Add PCI DMA endpoint function

This series adds the PCI endpoint-side pieces used by the endpoint DMA
function. It defines the BAR metadata format, extends EPC auxiliary
resources with DMA-specific resource descriptions, and teaches the
DesignWare endpoint controller to publish its integrated DMA resources.

The metadata lives in a normal endpoint BAR, not in PCI config space. This
keeps discovery independent from controller-specific writable extended
capability storage.


Dependencies
============

This series is based on pci/endpoint at:

  f5aa97125491 ("misc: pci_endpoint_test: remove dead BAR read before doorbell trigger")

It also depends on part 1 for the dw-edma channel lookup helper used by
the DesignWare endpoint resource provider.

  [PATCH 00/12] dmaengine: dw-edma: Prepare for PCI EP DMA (part 1/3)
  https://lore.kernel.org/all/20260521063115.2842238-1-den@valinux.co.jp/


Best regards,
Koichiro


Koichiro Den (3):
  PCI: endpoint: Define endpoint DMA BAR metadata format
  PCI: endpoint: Add DMA auxiliary resource metadata
  PCI: dwc: Expose endpoint DMA resources

 MAINTAINERS                                   |   1 +
 .../pci/controller/dwc/pcie-designware-ep.c   |  77 ++++++++-
 include/linux/pci-ep-dma.h                    | 163 ++++++++++++++++++
 include/linux/pci-epc.h                       |  43 +++++
 4 files changed, 280 insertions(+), 4 deletions(-)
 create mode 100644 include/linux/pci-ep-dma.h

-- 
2.51.0