net: hns3: add get/set pause parameters support for imp-controlled PHYs

mainline inclusion
from mainline-v5.13-rc1
commit 57a8f46b
category: feature
bugzilla: 173966
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=57a8f46b1bd3f5f43b06f48aab7c1f7ca0936be3

----------------------------------------------------------------------

When the imp-controlled PHYs feature is enabled, phydev is NULL.
In this case, the autoneg is always off when user uses ethtool -a
command to get pause parameters because  hclge_get_pauseparam()
uses phydev to check whether device is TP port. To fit this new
feature, use media type to check whether device is TP port.

And when user set pause parameters, these parameters need to
always set to mac, no matter whether autoneg is off.
Signed-off-by: NGuangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: NHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
Reviewed-by: NYongxin Li <liyongxin1@huawei.com>
Signed-off-by: NJunxin Chen <chenjunxin1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

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

@@ -10158,9 +10158,10 @@ static void hclge_get_pauseparam(struct hnae3_handle *handle, u32 *auto_neg,
 {
 	struct hclge_vport *vport = hclge_get_vport(handle);
 	struct hclge_dev *hdev = vport->back;
-	struct phy_device *phydev = hdev->hw.mac.phydev;
+	u8 media_type = hdev->hw.mac.media_type;
 
-	*auto_neg = phydev ? hclge_get_autoneg(handle) : 0;
+	*auto_neg = (media_type == HNAE3_MEDIA_TYPE_COPPER) ?
+		    hclge_get_autoneg(handle) : 0;
 
 	if (hdev->tm_info.fc_mode == HCLGE_FC_PFC) {
 		*rx_en = 0;
@@ -10206,7 +10207,7 @@ static int hclge_set_pauseparam(struct hnae3_handle *handle, u32 auto_neg,
 	struct phy_device *phydev = hdev->hw.mac.phydev;
 	u32 fc_autoneg;
 
-	if (phydev) {
+	if (phydev || hnae3_dev_phy_imp_supported(hdev)) {
 		fc_autoneg = hclge_get_autoneg(handle);
 		if (auto_neg != fc_autoneg) {
 			dev_info(&hdev->pdev->dev,
@@ -10225,7 +10226,7 @@ static int hclge_set_pauseparam(struct hnae3_handle *handle, u32 auto_neg,
 
 	hclge_record_user_pauseparam(hdev, rx_en, tx_en);
 
-	if (!auto_neg)
+	if (!auto_neg || hnae3_dev_phy_imp_supported(hdev))
 		return hclge_cfg_pauseparam(hdev, rx_en, tx_en);
 
 	if (phydev)