1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/net/ethernet/meta/fbnic/fbnic_devlink.c b/drivers/net/ethernet/meta/fbnic/fbnic_devlink.c
new file mode 100644
index 000000000000..e87049dfd223
--- /dev/null
+++ b/drivers/net/ethernet/meta/fbnic/fbnic_devlink.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) Meta Platforms, Inc. and affiliates. */
+
+#include <asm/unaligned.h>
+#include <linux/pci.h>
+#include <linux/types.h>
+#include <net/devlink.h>
+
+#include "fbnic.h"
+
+#define FBNIC_SN_STR_LEN	24
+
+static int fbnic_devlink_info_get(struct devlink *devlink,
+				  struct devlink_info_req *req,
+				  struct netlink_ext_ack *extack)
+{
+	struct fbnic_dev *fbd = devlink_priv(devlink);
+	int err;
+
+	if (fbd->dsn) {
+		unsigned char serial[FBNIC_SN_STR_LEN];
+		u8 dsn[8];
+
+		put_unaligned_be64(fbd->dsn, dsn);
+		err = snprintf(serial, FBNIC_SN_STR_LEN, "%8phD", dsn);
+		if (err < 0)
+			return err;
+
+		err = devlink_info_serial_number_put(req, serial);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static const struct devlink_ops fbnic_devlink_ops = {
+	.info_get = fbnic_devlink_info_get,
+};
+
+void fbnic_devlink_free(struct fbnic_dev *fbd)
+{
+	struct devlink *devlink = priv_to_devlink(fbd);
+
+	devlink_free(devlink);
+}
+
+struct fbnic_dev *fbnic_devlink_alloc(struct pci_dev *pdev)
+{
+	void __iomem * const *iomap_table;
+	struct devlink *devlink;
+	struct fbnic_dev *fbd;
+
+	devlink = devlink_alloc(&fbnic_devlink_ops, sizeof(struct fbnic_dev),
+				&pdev->dev);
+	if (!devlink)
+		return NULL;
+
+	fbd = devlink_priv(devlink);
+	pci_set_drvdata(pdev, fbd);
+	fbd->dev = &pdev->dev;
+
+	iomap_table = pcim_iomap_table(pdev);
+	fbd->uc_addr0 = iomap_table[0];
+	fbd->uc_addr4 = iomap_table[4];
+
+	fbd->dsn = pci_get_dsn(pdev);
+	fbd->mps = pcie_get_mps(pdev);
+	fbd->readrq = pcie_get_readrq(pdev);
+
+	fbd->mac_addr_boundary = FBNIC_RPC_TCAM_MACDA_DEFAULT_BOUNDARY;
+
+	return fbd;
+}
+
+void fbnic_devlink_register(struct fbnic_dev *fbd)
+{
+	struct devlink *devlink = priv_to_devlink(fbd);
+
+	devlink_register(devlink);
+}
+
+void fbnic_devlink_unregister(struct fbnic_dev *fbd)
+{
+	struct devlink *devlink = priv_to_devlink(fbd);
+
+	devlink_unregister(devlink);
+}