Add support to create SRIOV VFs.
Signed-off-by: Veerasenareddy Burru <vburru@xxxxxxxxxxx>
Signed-off-by: Sathesh Edara <sedara@xxxxxxxxxxx>
---
v1 -> v2:
* no change
.../ethernet/marvell/octeon_ep/octep_main.c | 50 +++++++++++++++++++
1 file changed, 50 insertions(+)
diff --git a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
index 069c4d18cf37..d43161d1e38a 100644
--- a/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
+++ b/drivers/net/ethernet/marvell/octeon_ep/octep_main.c
@@ -1177,11 +1177,61 @@ static void octep_remove(struct pci_dev *pdev)
pci_disable_device(pdev);
}
+static int octep_sriov_disable(struct octep_device *oct)
+{
+ struct pci_dev *pdev = oct->pdev;
+
+ if (pci_vfs_assigned(oct->pdev)) {
+ dev_warn(&pdev->dev, "Can't disable SRIOV while VFs are assigned\n");
+ return -EPERM;
+ }
+
+ pci_disable_sriov(pdev);
+ CFG_GET_ACTIVE_VFS(oct->conf) = 0;
+
+ return 0;
+}
+
+static int octep_sriov_enable(struct octep_device *oct, int num_vfs)
+{
+ struct pci_dev *pdev = oct->pdev;
+ int err;
+
+ err = pci_enable_sriov(pdev, num_vfs);
+ if (err) {
+ dev_warn(&pdev->dev, "Failed to enable SRIOV err=%d\n", err);
+ return err;
+ }
+ CFG_GET_ACTIVE_VFS(oct->conf) = num_vfs;
+
+ return num_vfs;
+}
+
+static int octep_sriov_configure(struct pci_dev *pdev, int num_vfs)
+{
+ struct octep_device *oct = pci_get_drvdata(pdev);
+ int max_nvfs;
+
+ if (num_vfs == 0)
+ return octep_sriov_disable(oct);
+
+ max_nvfs = CFG_GET_MAX_VFS(oct->conf);
+
+ if (num_vfs > max_nvfs) {
+ dev_err(&pdev->dev, "Invalid VF count Max supported VFs = %d\n",
+ max_nvfs);
+ return -EINVAL;
+ }
+
+ return octep_sriov_enable(oct, num_vfs);
+}
+
static struct pci_driver octep_driver = {
.name = OCTEP_DRV_NAME,
.id_table = octep_pci_id_tbl,
.probe = octep_probe,
.remove = octep_remove,
+ .sriov_configure = octep_sriov_configure,
};
/**
--
2.36.0
