net: hns3: Add serdes parallel inner loopback support

This patch adds serdes parallel inner loopback support for self test.

Signed-off-by: Fuyun Liang <liangfuyun1@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/hisilicon/hns3/hnae3.h

@@ -85,7 +85,8 @@ struct hnae3_queue {
 /*hnae3 loop mode*/
 enum hnae3_loop {
 	HNAE3_LOOP_APP,
-	HNAE3_LOOP_SERDES,
+	HNAE3_LOOP_SERIAL_SERDES,
+	HNAE3_LOOP_PARALLEL_SERDES,
 	HNAE3_LOOP_PHY,
 	HNAE3_LOOP_NONE,
 };
@@ -480,8 +481,9 @@ struct hnae3_unic_private_info {
 
 #define HNAE3_SUPPORT_APP_LOOPBACK    BIT(0)
 #define HNAE3_SUPPORT_PHY_LOOPBACK    BIT(1)
-#define HNAE3_SUPPORT_SERDES_LOOPBACK BIT(2)
+#define HNAE3_SUPPORT_SERDES_SERIAL_LOOPBACK	BIT(2)
 #define HNAE3_SUPPORT_VF	      BIT(3)
+#define HNAE3_SUPPORT_SERDES_PARALLEL_LOOPBACK	BIT(4)
 
 struct hnae3_handle {
 	struct hnae3_client *client;

drivers/net/ethernet/hisilicon/hns3/hns3_ethtool.c

@@ -53,7 +53,7 @@ static const struct hns3_stats hns3_rxq_stats[] = {
 
 #define HNS3_TQP_STATS_COUNT (HNS3_TXQ_STATS_COUNT + HNS3_RXQ_STATS_COUNT)
 
-#define HNS3_SELF_TEST_TYPE_NUM		2
+#define HNS3_SELF_TEST_TPYE_NUM         3
 #define HNS3_NIC_LB_TEST_PKT_NUM	1
 #define HNS3_NIC_LB_TEST_RING_ID	0
 #define HNS3_NIC_LB_TEST_PACKET_SIZE	128
@@ -78,7 +78,8 @@ static int hns3_lp_setup(struct net_device *ndev, enum hnae3_loop loop, bool en)
 		return -EOPNOTSUPP;
 
 	switch (loop) {
-	case HNAE3_LOOP_SERDES:
+	case HNAE3_LOOP_SERIAL_SERDES:
+	case HNAE3_LOOP_PARALLEL_SERDES:
 	case HNAE3_LOOP_APP:
 		ret = h->ae_algo->ops->set_loopback(h, loop, en);
 		break;
@@ -290,9 +291,14 @@ static void hns3_self_test(struct net_device *ndev,
 	st_param[HNAE3_LOOP_APP][1] =
 			h->flags & HNAE3_SUPPORT_APP_LOOPBACK;
 
-	st_param[HNAE3_LOOP_SERDES][0] = HNAE3_LOOP_SERDES;
-	st_param[HNAE3_LOOP_SERDES][1] =
-			h->flags & HNAE3_SUPPORT_SERDES_LOOPBACK;
+	st_param[HNAE3_LOOP_SERIAL_SERDES][0] = HNAE3_LOOP_SERIAL_SERDES;
+	st_param[HNAE3_LOOP_SERIAL_SERDES][1] =
+			h->flags & HNAE3_SUPPORT_SERDES_SERIAL_LOOPBACK;
+
+	st_param[HNAE3_LOOP_PARALLEL_SERDES][0] =
+			HNAE3_LOOP_PARALLEL_SERDES;
+	st_param[HNAE3_LOOP_PARALLEL_SERDES][1] =
+			h->flags & HNAE3_SUPPORT_SERDES_PARALLEL_LOOPBACK;
 
 	if (if_running)
 		ndev->netdev_ops->ndo_stop(ndev);

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h

@@ -778,6 +778,7 @@ struct hclge_reset_cmd {
 };
 
 #define HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B	BIT(0)
+#define HCLGE_CMD_SERDES_PARALLEL_INNER_LOOP_B	BIT(2)
 #define HCLGE_CMD_SERDES_DONE_B			BIT(0)
 #define HCLGE_CMD_SERDES_SUCCESS_B		BIT(1)
 struct hclge_serdes_lb_cmd {

drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c

@@ -50,7 +50,8 @@ MODULE_DEVICE_TABLE(pci, ae_algo_pci_tbl);
 
 static const char hns3_nic_test_strs[][ETH_GSTRING_LEN] = {
 	"App    Loopback test",
-	"Serdes Loopback test",
+	"Serdes serial Loopback test",
+	"Serdes parallel Loopback test",
 	"Phy    Loopback test"
 };
 
@@ -475,7 +476,10 @@ static void hclge_update_stats(struct hnae3_handle *handle,
 
 static int hclge_get_sset_count(struct hnae3_handle *handle, int stringset)
 {
-#define HCLGE_LOOPBACK_TEST_FLAGS 0x7
+#define HCLGE_LOOPBACK_TEST_FLAGS (HNAE3_SUPPORT_APP_LOOPBACK |\
+		HNAE3_SUPPORT_PHY_LOOPBACK |\
+		HNAE3_SUPPORT_SERDES_SERIAL_LOOPBACK |\
+		HNAE3_SUPPORT_SERDES_PARALLEL_LOOPBACK)
 
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
@@ -489,15 +493,17 @@ static int hclge_get_sset_count(struct hnae3_handle *handle, int stringset)
 	if (stringset == ETH_SS_TEST) {
 		/* clear loopback bit flags at first */
 		handle->flags = (handle->flags & (~HCLGE_LOOPBACK_TEST_FLAGS));
-		if (hdev->hw.mac.speed == HCLGE_MAC_SPEED_10M ||
+		if (hdev->pdev->revision >= HNAE3_REVISION_ID_21 ||
+		    hdev->hw.mac.speed == HCLGE_MAC_SPEED_10M ||
 		    hdev->hw.mac.speed == HCLGE_MAC_SPEED_100M ||
 		    hdev->hw.mac.speed == HCLGE_MAC_SPEED_1G) {
 			count += 1;
 			handle->flags |= HNAE3_SUPPORT_APP_LOOPBACK;
 		}
 
-		count++;
-		handle->flags |= HNAE3_SUPPORT_SERDES_LOOPBACK;
+		count += 2;
+		handle->flags |= HNAE3_SUPPORT_SERDES_SERIAL_LOOPBACK;
+		handle->flags |= HNAE3_SUPPORT_SERDES_PARALLEL_LOOPBACK;
 	} else if (stringset == ETH_SS_STATS) {
 		count = ARRAY_SIZE(g_mac_stats_string) +
 			hclge_tqps_get_sset_count(handle, stringset);
@@ -527,9 +533,15 @@ static void hclge_get_strings(struct hnae3_handle *handle,
 			       ETH_GSTRING_LEN);
 			p += ETH_GSTRING_LEN;
 		}
-		if (handle->flags & HNAE3_SUPPORT_SERDES_LOOPBACK) {
+		if (handle->flags & HNAE3_SUPPORT_SERDES_SERIAL_LOOPBACK) {
 			memcpy(p,
-			       hns3_nic_test_strs[HNAE3_LOOP_SERDES],
+			       hns3_nic_test_strs[HNAE3_LOOP_SERIAL_SERDES],
+			       ETH_GSTRING_LEN);
+			p += ETH_GSTRING_LEN;
+		}
+		if (handle->flags & HNAE3_SUPPORT_SERDES_PARALLEL_LOOPBACK) {
+			memcpy(p,
+			       hns3_nic_test_strs[HNAE3_LOOP_PARALLEL_SERDES],
 			       ETH_GSTRING_LEN);
 			p += ETH_GSTRING_LEN;
 		}
@@ -3381,22 +3393,37 @@ static int hclge_set_app_loopback(struct hclge_dev *hdev, bool en)
 	return ret;
 }
 
-static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en)
+static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
+				     enum hnae3_loop loop_mode)
 {
 #define HCLGE_SERDES_RETRY_MS	10
 #define HCLGE_SERDES_RETRY_NUM	100
 	struct hclge_serdes_lb_cmd *req;
 	struct hclge_desc desc;
 	int ret, i = 0;
+	u8 loop_mode_b;
 
 	req = (struct hclge_serdes_lb_cmd *)desc.data;
 	hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_SERDES_LOOPBACK, false);
 
+	switch (loop_mode) {
+	case HNAE3_LOOP_SERIAL_SERDES:
+		loop_mode_b = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+		break;
+	case HNAE3_LOOP_PARALLEL_SERDES:
+		loop_mode_b = HCLGE_CMD_SERDES_PARALLEL_INNER_LOOP_B;
+		break;
+	default:
+		dev_err(&hdev->pdev->dev,
+			"unsupported serdes loopback mode %d\n", loop_mode);
+		return -ENOTSUPP;
+	}
+
 	if (en) {
-		req->enable = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
-		req->mask = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+		req->enable = loop_mode_b;
+		req->mask = loop_mode_b;
 	} else {
-		req->mask = HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+		req->mask = loop_mode_b;
 	}
 
 	ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@@ -3462,8 +3489,9 @@ static int hclge_set_loopback(struct hnae3_handle *handle,
 	case HNAE3_LOOP_APP:
 		ret = hclge_set_app_loopback(hdev, en);
 		break;
-	case HNAE3_LOOP_SERDES:
-		ret = hclge_set_serdes_loopback(hdev, en);
+	case HNAE3_LOOP_SERIAL_SERDES:
+	case HNAE3_LOOP_PARALLEL_SERDES:
+		ret = hclge_set_serdes_loopback(hdev, en, loop_mode);
 		break;
 	default:
 		ret = -ENOTSUPP;