[PATCH 03/15] PCI: dwc: ep: Report DMA channel metadata for aux resources

[Koichiro Den]

DesignWare endpoint controllers already expose the controller MMIO
region and the per-channel linked-list descriptor windows as auxiliary
resources. Populate the new DMA channel metadata for each
PCI_EPC_AUX_DMA_CHAN_DESC entry using the cached channel IDs and channel
direction.

This lets generic consumers match delegated DMA channels to the
descriptor windows they need to program.

Signed-off-by: Koichiro Den <den@xxxxxxxxxxxxx>
---
 drivers/pci/controller/dwc/pcie-designware-ep.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/pci/controller/dwc/pcie-designware-ep.c b/drivers/pci/controller/dwc/pcie-designware-ep.c
index eec20800a745..1e584f6a6565 100644
--- a/drivers/pci/controller/dwc/pcie-designware-ep.c
+++ b/drivers/pci/controller/dwc/pcie-designware-ep.c
@@ -947,6 +947,10 @@ dw_pcie_ep_get_aux_resources(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
 			.size = edma->ll_region_wr[i].sz,
 			.bar = NO_BAR,
 			.bar_offset = 0,
+			.u.dma_chan = {
+				.chan_id = edma->chan_ids_wr[i],
+				.dir = PCI_EPC_AUX_DMA_DIR_WRITE,
+			},
 		};
 	}
 
@@ -961,6 +965,10 @@ dw_pcie_ep_get_aux_resources(struct pci_epc *epc, u8 func_no, u8 vfunc_no,
 			.size = edma->ll_region_rd[i].sz,
 			.bar = NO_BAR,
 			.bar_offset = 0,
+			.u.dma_chan = {
+				.chan_id = edma->chan_ids_rd[i],
+				.dir = PCI_EPC_AUX_DMA_DIR_READ,
+			},
 		};
 	}
 
-- 
2.51.0