1 files changed, 76 insertions, 20 deletions

diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c
index 5b139f2206b6..4a416f2717ba 100644
--- a/drivers/net/dsa/dsa_loop.c
+++ b/drivers/net/dsa/dsa_loop.c
@@ -17,7 +17,19 @@
 #include <linux/dsa/loop.h>
 #include <net/dsa.h>
 
-#include "dsa_loop.h"
+#define DSA_LOOP_NUM_PORTS	6
+#define DSA_LOOP_CPU_PORT	(DSA_LOOP_NUM_PORTS - 1)
+#define NUM_FIXED_PHYS		(DSA_LOOP_NUM_PORTS - 2)
+
+struct dsa_loop_pdata {
+	/* Must be first, such that dsa_register_switch() can access this
+	 * without gory pointer manipulations
+	 */
+	struct dsa_chip_data cd;
+	const char *name;
+	unsigned int enabled_ports;
+	const char *netdev;
+};
 
 static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
 	[DSA_LOOP_PHY_READ_OK]	= { "phy_read_ok", },
@@ -27,6 +39,7 @@ static struct dsa_loop_mib_entry dsa_loop_mibs[] = {
 };
 
 static struct phy_device *phydevs[PHY_MAX_ADDR];
+static struct mdio_device *switch_mdiodev;
 
 enum dsa_loop_devlink_resource_id {
 	DSA_LOOP_DEVLINK_PARAM_ID_VTU,
@@ -121,8 +134,7 @@ static void dsa_loop_get_strings(struct dsa_switch *ds, int port,
 		return;
 
 	for (i = 0; i < __DSA_LOOP_CNT_MAX; i++)
-		memcpy(data + i * ETH_GSTRING_LEN,
-		       ps->ports[port].mib[i].name, ETH_GSTRING_LEN);
+		ethtool_puts(&data, ps->ports[port].mib[i].name);
 }
 
 static void dsa_loop_get_ethtool_stats(struct dsa_switch *ds, int port,
@@ -277,6 +289,14 @@ static int dsa_loop_port_max_mtu(struct dsa_switch *ds, int port)
 	return ETH_MAX_MTU;
 }
 
+static void dsa_loop_phylink_get_caps(struct dsa_switch *dsa, int port,
+				      struct phylink_config *config)
+{
+	bitmap_fill(config->supported_interfaces, PHY_INTERFACE_MODE_MAX);
+	__clear_bit(PHY_INTERFACE_MODE_NA, config->supported_interfaces);
+	config->mac_capabilities = ~0;
+}
+
 static const struct dsa_switch_ops dsa_loop_driver = {
 	.get_tag_protocol	= dsa_loop_get_protocol,
 	.setup			= dsa_loop_setup,
@@ -295,6 +315,7 @@ static const struct dsa_switch_ops dsa_loop_driver = {
 	.port_vlan_del		= dsa_loop_port_vlan_del,
 	.port_change_mtu	= dsa_loop_port_change_mtu,
 	.port_max_mtu		= dsa_loop_port_max_mtu,
+	.phylink_get_caps	= dsa_loop_phylink_get_caps,
 };
 
 static int dsa_loop_drv_probe(struct mdio_device *mdiodev)
@@ -374,34 +395,68 @@ static struct mdio_driver dsa_loop_drv = {
 	.shutdown = dsa_loop_drv_shutdown,
 };
 
-#define NUM_FIXED_PHYS	(DSA_LOOP_NUM_PORTS - 2)
-
 static void dsa_loop_phydevs_unregister(void)
 {
-	unsigned int i;
-
-	for (i = 0; i < NUM_FIXED_PHYS; i++)
-		if (!IS_ERR(phydevs[i])) {
+	for (int i = 0; i < NUM_FIXED_PHYS; i++) {
+		if (!IS_ERR(phydevs[i]))
 			fixed_phy_unregister(phydevs[i]);
-			phy_device_free(phydevs[i]);
-		}
+	}
 }
 
-static int __init dsa_loop_init(void)
+static int __init dsa_loop_create_switch_mdiodev(void)
 {
-	struct fixed_phy_status status = {
-		.link = 1,
-		.speed = SPEED_100,
-		.duplex = DUPLEX_FULL,
+	static struct dsa_loop_pdata dsa_loop_pdata = {
+		.cd = {
+			.port_names[0] = "lan1",
+			.port_names[1] = "lan2",
+			.port_names[2] = "lan3",
+			.port_names[3] = "lan4",
+			.port_names[DSA_LOOP_CPU_PORT] = "cpu",
+		},
+		.name = "DSA mockup driver",
+		.enabled_ports = 0x1f,
+		.netdev = "eth0",
 	};
-	unsigned int i, ret;
+	struct mii_bus *bus;
+	int ret = -ENODEV;
+
+	bus = mdio_find_bus("fixed-0");
+	if (WARN_ON(!bus))
+		return ret;
+
+	switch_mdiodev = mdio_device_create(bus, 31);
+	if (IS_ERR(switch_mdiodev))
+		goto out;
+
+	strscpy(switch_mdiodev->modalias, "dsa-loop");
+	switch_mdiodev->dev.platform_data = &dsa_loop_pdata;
+
+	ret = mdio_device_register(switch_mdiodev);
+	if (ret)
+		mdio_device_free(switch_mdiodev);
+out:
+	put_device(&bus->dev);
+	return ret;
+}
+
+static int __init dsa_loop_init(void)
+{
+	unsigned int i;
+	int ret;
+
+	ret = dsa_loop_create_switch_mdiodev();
+	if (ret)
+		return ret;
 
 	for (i = 0; i < NUM_FIXED_PHYS; i++)
-		phydevs[i] = fixed_phy_register(PHY_POLL, &status, NULL);
+		phydevs[i] = fixed_phy_register_100fd();
 
 	ret = mdio_driver_register(&dsa_loop_drv);
-	if (ret)
+	if (ret) {
 		dsa_loop_phydevs_unregister();
+		mdio_device_remove(switch_mdiodev);
+		mdio_device_free(switch_mdiodev);
+	}
 
 	return ret;
 }
@@ -411,10 +466,11 @@ static void __exit dsa_loop_exit(void)
 {
 	mdio_driver_unregister(&dsa_loop_drv);
 	dsa_loop_phydevs_unregister();
+	mdio_device_remove(switch_mdiodev);
+	mdio_device_free(switch_mdiodev);
 }
 module_exit(dsa_loop_exit);
 
-MODULE_SOFTDEP("pre: dsa_loop_bdinfo");
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Florian Fainelli");
 MODULE_DESCRIPTION("DSA loopback driver");