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net: hns3: After setting the loopback, add the status of getting MAC 

After setting the serdes loopback, you need to determine
the status of the MAC negotiation. If a status exception
is obtained after 200ms, a timeout error is returned.

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
liuzhongzhu 2019-01-27 00:49:15 +08:00 committed by David S. Miller
parent 28673b33c7
commit 350fda0a0a
1 changed files with 22 additions and 1 deletions
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23
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
View File

@ -5237,8 +5237,15 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
{
#define HCLGE_SERDES_RETRY_MS 10
#define HCLGE_SERDES_RETRY_NUM 100
#define HCLGE_MAC_LINK_STATUS_MS 20
#define HCLGE_MAC_LINK_STATUS_NUM 10
#define HCLGE_MAC_LINK_STATUS_DOWN 0
#define HCLGE_MAC_LINK_STATUS_UP 1
struct hclge_serdes_lb_cmd *req;
struct hclge_desc desc;
int mac_link_ret = 0;
int ret, i = 0;
u8 loop_mode_b;
@ -5261,8 +5268,10 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
if (en) {
req->enable = loop_mode_b;
req->mask = loop_mode_b;
mac_link_ret = HCLGE_MAC_LINK_STATUS_UP;
} else {
req->mask = loop_mode_b;
mac_link_ret = HCLGE_MAC_LINK_STATUS_DOWN;
}
ret = hclge_cmd_send(&hdev->hw, &desc, 1);
@ -5294,7 +5303,19 @@ static int hclge_set_serdes_loopback(struct hclge_dev *hdev, bool en,
}
hclge_cfg_mac_mode(hdev, en);
return 0;
i = 0;
do {
/* serdes Internal loopback, independent of the network cable.*/
msleep(HCLGE_MAC_LINK_STATUS_MS);
ret = hclge_get_mac_link_status(hdev);
if (ret == mac_link_ret)
return 0;
} while (++i < HCLGE_MAC_LINK_STATUS_NUM);
dev_err(&hdev->pdev->dev, "config mac mode timeout\n");
return -EBUSY;
}
static int hclge_tqp_enable(struct hclge_dev *hdev, int tqp_id,