qlcnic: support LED blink for device identification

Added support of device identification by blinking LED for specified time.

Signed-off-by: Sucheta Chakraborty <sucheta.chakraborty@qlogic.com>
Signed-off-by: Amit Kumar Salecha <amit.salecha@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/qlcnic/qlcnic.h

@@ -1015,6 +1015,7 @@ void qlcnic_pcie_sem_unlock(struct qlcnic_adapter *, int);
 
 int qlcnic_get_board_info(struct qlcnic_adapter *adapter);
 int qlcnic_wol_supported(struct qlcnic_adapter *adapter);
+int qlcnic_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate);
 
 /* Functions from qlcnic_init.c */
 int qlcnic_phantom_init(struct qlcnic_adapter *adapter);

drivers/net/qlcnic/qlcnic_ethtool.c

@@ -618,6 +618,7 @@ qlcnic_diag_test(struct net_device *dev, struct ethtool_test *eth_test,
 		     u64 *data)
 {
 	memset(data, 0, sizeof(u64) * QLCNIC_TEST_LEN);
+
 	data[0] = qlcnic_reg_test(dev);
 	if (data[0])
 		eth_test->flags |= ETH_TEST_FL_FAILED;
@@ -693,6 +694,30 @@ static int qlcnic_set_tso(struct net_device *dev, u32 data)
 	return 0;
 }
 
+static int qlcnic_blink_led(struct net_device *dev, u32 val)
+{
+	struct qlcnic_adapter *adapter = netdev_priv(dev);
+	int ret;
+
+	ret = qlcnic_config_led(adapter, 1, 0xf);
+	if (ret) {
+		dev_err(&adapter->pdev->dev,
+			"Failed to set LED blink state.\n");
+		return ret;
+	}
+
+	msleep_interruptible(val * 1000);
+
+	ret = qlcnic_config_led(adapter, 0, 0xf);
+	if (ret) {
+		dev_err(&adapter->pdev->dev,
+			"Failed to reset LED blink state.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
 static void
 qlcnic_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
 {
@@ -867,4 +892,5 @@ const struct ethtool_ops qlcnic_ethtool_ops = {
 	.set_coalesce = qlcnic_set_intr_coalesce,
 	.get_flags = ethtool_op_get_flags,
 	.set_flags = qlcnic_set_flags,
+	.phys_id = qlcnic_blink_led,
 };

drivers/net/qlcnic/qlcnic_hw.c

@@ -1199,3 +1199,25 @@ qlcnic_wol_supported(struct qlcnic_adapter *adapter)
 
 	return 0;
 }
+
+int qlcnic_config_led(struct qlcnic_adapter *adapter, u32 state, u32 rate)
+{
+	struct qlcnic_nic_req   req;
+	int rv;
+	u64 word;
+
+	memset(&req, 0, sizeof(struct qlcnic_nic_req));
+	req.qhdr = cpu_to_le64(QLCNIC_HOST_REQUEST << 23);
+
+	word = QLCNIC_H2C_OPCODE_CONFIG_LED | ((u64)adapter->portnum << 16);
+	req.req_hdr = cpu_to_le64(word);
+
+	req.words[0] = cpu_to_le64((u64)rate << 32);
+	req.words[1] = cpu_to_le64(state);
+
+	rv = qlcnic_send_cmd_descs(adapter, (struct cmd_desc_type0 *)&req, 1);
+	if (rv)
+		dev_err(&adapter->pdev->dev, "LED configuration failed.\n");
+
+	return rv;
+}