[RFC PATCH v3 05/35] PCI: endpoint: pci-epf-vntb: Propagate MW offset from configfs when present
From: Koichiro Den <hidden>
Date: 2025-12-17 16:50:21
Also in:
dmaengine, linux-pci, linux-renesas-soc, lkml
Subsystem:
ntb driver core, pci endpoint subsystem, pci subsystem, the rest · Maintainers:
Jon Mason, Dave Jiang, Allen Hubbe, Manivannan Sadhasivam, Krzysztof Wilczyński, Bjorn Helgaas, Linus Torvalds
The NTB API functions ntb_mw_set_trans() and ntb_mw_get_align() now support non-zero MW offsets. Update pci-epf-vntb to populate mws_offset[idx] when the offset parameter is provided. Users can now retrieve the offset and pass it to ntb_mw_set_trans(). Signed-off-by: Koichiro Den <redacted> --- drivers/pci/endpoint/functions/pci-epf-vntb.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index 4db1fabfd8a4..337995e2f3ce 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c@@ -1521,6 +1521,9 @@ static int vntb_epf_mw_get_align(struct ntb_dev *ndev, int pidx, int idx, if (size_max) *size_max = ntb->mws_size[idx]; + if (offset) + *offset = ntb->mws_offset[idx]; + return 0; }
--
2.51.0