[RFC PATCH v4 14/38] PCI: endpoint: pci-epf-vntb: Implement .get_private_data() callback

Koichiro Den
2026-01-18T13:55:23Z

Implement the new get_private_data() operation for the EPF vNTB driver
to expose its associated EPC device to NTB subsystems.

Signed-off-by: Koichiro Den <den@valinux.co.jp>
---
drivers/pci/endpoint/functions/pci-epf-vntb.c | 10 ++++++++++
1 file changed, 10 insertions(+)

diff --git a/drivers/pci/endpoint/functions/pci-epf-vntb.c b/drivers/pci/endpoint/functions/pci-epf-vntb.c
index 98128c2c5079..9fbc27000f77 100644
--- a/drivers/pci/endpoint/functions/pci-epf-vntb.c
+++ b/drivers/pci/endpoint/functions/pci-epf-vntb.c
@@ -1747,6 +1747,15 @@ static int vntb_epf_link_disable(struct ntb_dev *ntb)
return 0;
}

+static void *vntb_epf_get_private_data(struct ntb_dev *ndev)
+{
+ struct epf_ntb *ntb = ntb_ndev(ndev);
+
+ if (!ntb || !ntb->epf)
+ return NULL;
+ return ntb->epf->epc;
+}
+
static const struct ntb_dev_ops vntb_epf_ops = {
.mw_count = vntb_epf_mw_count,
.spad_count = vntb_epf_spad_count,
@@ -1771,6 +1780,7 @@ static const struct ntb_dev_ops vntb_epf_ops = {
.db_clear_mask = vntb_epf_db_clear_mask,
.db_clear = vntb_epf_db_clear,
.link_disable = vntb_epf_link_disable,
+ .get_private_data = vntb_epf_get_private_data,
};

static int pci_vntb_probe(struct pci_dev *pdev, const struct pci_device_id *id)
--
2.51.0