[PATCH v2 08/14] net-next/yunsilicon: Add ethernet interface

@@ -4,5 +4,5 @@
 # Makefile for the Yunsilicon device drivers.
 #
 
-# obj-$(CONFIG_YUNSILICON_XSC_ETH) += xsc/net/
+obj-$(CONFIG_YUNSILICON_XSC_ETH) += xsc/net/
 obj-$(CONFIG_YUNSILICON_XSC_PCI) += xsc/pci/

@@ -429,6 +429,7 @@ struct xsc_core_device {
 	struct pci_dev		*pdev;
 	struct device		*device;
 	struct xsc_priv		priv;
+	void			*netdev;
 	void			*eth_priv;
 	struct xsc_dev_resource	*dev_res;
 

@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include "common/xsc_core.h"
+#include "xsc_eth_common.h"
+#include "xsc_eth.h"
+
+static int xsc_get_max_num_channels(struct xsc_core_device *xdev)
+{
+	return min_t(int, xdev->dev_res->eq_table.num_comp_vectors,
+		     XSC_ETH_MAX_NUM_CHANNELS);
+}
+
+static void *xsc_eth_add(struct xsc_core_device *xdev)
+{
+	struct xsc_adapter *adapter;
+	struct net_device *netdev;
+	int num_chl, num_tc;
+	int err;
+
+	num_chl = xsc_get_max_num_channels(xdev);
+	num_tc = xdev->caps.max_tc;
+
+	netdev = alloc_etherdev_mqs(sizeof(struct xsc_adapter),
+				    num_chl * num_tc, num_chl);
+	if (!netdev) {
+		pr_err("alloc_etherdev_mqs failed, txq=%d, rxq=%d\n",
+		       (num_chl * num_tc), num_chl);
+		return NULL;
+	}
+
+	netdev->dev.parent = &xdev->pdev->dev;
+	adapter = netdev_priv(netdev);
+	adapter->netdev = netdev;
+	adapter->pdev = xdev->pdev;
+	adapter->dev = &adapter->pdev->dev;
+	adapter->xdev = (void *)xdev;
+	xdev->eth_priv = adapter;
+
+	err = register_netdev(netdev);
+	if (err) {
+		netdev_err(netdev, "register_netdev failed, err=%d\n", err);
+		goto err_free_netdev;
+	}
+
+	xdev->netdev = (void *)netdev;
+
+	return adapter;
+
+err_free_netdev:
+	free_netdev(netdev);
+
+	return NULL;
+}
+
+static void xsc_eth_remove(struct xsc_core_device *xdev, void *context)
+{
+	struct xsc_adapter *adapter;
+
+	if (!xdev)
+		return;
+
+	adapter = xdev->eth_priv;
+	if (!adapter) {
+		netdev_err(adapter->netdev, "failed! adapter is null\n");
+		return;
+	}
+
+	unregister_netdev(adapter->netdev);
+
+	free_netdev(adapter->netdev);
+
+	xdev->netdev = NULL;
+	xdev->eth_priv = NULL;
+}
+
+static struct xsc_interface xsc_interface = {
+	.add       = xsc_eth_add,
+	.remove    = xsc_eth_remove,
+	.event     = NULL,
+	.protocol  = XSC_INTERFACE_PROTOCOL_ETH,
+};
+
+static void xsc_remove_eth_driver(void)
+{
+	xsc_unregister_interface(&xsc_interface);
+}
+
+static __init int xsc_net_driver_init(void)
+{
+	int ret;
+
+	ret = xsc_register_interface(&xsc_interface);
+	if (ret != 0) {
+		pr_err("failed to register interface\n");
+		goto out;
+	}
+	return 0;
+out:
+	return -1;
+}
+
+static __exit void xsc_net_driver_exit(void)
+{
+	xsc_remove_eth_driver();
+}
+
+module_init(xsc_net_driver_init);
+module_exit(xsc_net_driver_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Yunsilicon XSC ethernet driver");

@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __XSC_ETH_H
+#define __XSC_ETH_H
+
+struct xsc_adapter {
+	struct net_device	*netdev;
+	struct pci_dev		*pdev;
+	struct device		*dev;
+	struct xsc_core_device	*xdev;
+};
+
+#endif /* __XSC_ETH_H */

@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2021-2025, Shanghai Yunsilicon Technology Co., Ltd.
+ * All rights reserved.
+ */
+
+#ifndef __XSC_ETH_COMMON_H
+#define __XSC_ETH_COMMON_H
+
+#define XSC_LOG_INDIR_RQT_SIZE		0x8
+
+#define XSC_INDIR_RQT_SIZE		BIT(XSC_LOG_INDIR_RQT_SIZE)
+#define XSC_ETH_MIN_NUM_CHANNELS	2
+#define XSC_ETH_MAX_NUM_CHANNELS	XSC_INDIR_RQT_SIZE
+
+#endif