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Message-ID: <1582075413-34966-4-git-send-email-tanhuazhong@huawei.com>
Date: Wed, 19 Feb 2020 09:23:32 +0800
From: Huazhong Tan <tanhuazhong@...wei.com>
To: <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<salil.mehta@...wei.com>, <yisen.zhuang@...wei.com>,
<linuxarm@...wei.com>, <kuba@...nel.org>,
Yufeng Mo <moyufeng@...wei.com>,
Huazhong Tan <tanhuazhong@...wei.com>
Subject: [PATCH net-next 3/4] net: hns3: add support for dump MAC ID and loopback status in debugfs
From: Yufeng Mo <moyufeng@...wei.com>
The MAC ID and loopback status information are obtained from
the hardware, which will be helpful for debugging. This patch
adds support for these two items in debugfs.
Signed-off-by: Yufeng Mo <moyufeng@...wei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 1 +
.../ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c | 55 ++++++++++++++++++++++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 3 ++
.../ethernet/hisilicon/hns3/hns3pf/hclge_main.h | 1 +
4 files changed, 60 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index 1d4ffc5..345a84b 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -260,6 +260,7 @@ static void hns3_dbg_help(struct hnae3_handle *h)
dev_info(&h->pdev->dev, "dump m7 info\n");
dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n");
dev_info(&h->pdev->dev, "dump mac tnl status\n");
+ dev_info(&h->pdev->dev, "dump loopback\n");
memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
strncat(printf_buf, "dump reg [[bios common] [ssu <port_id>]",
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index 5e94b35..6295cf9 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -1171,6 +1171,57 @@ static void hclge_dbg_dump_ncl_config(struct hclge_dev *hdev,
}
}
+static void hclge_dbg_dump_loopback(struct hclge_dev *hdev,
+ const char *cmd_buf)
+{
+ struct phy_device *phydev = hdev->hw.mac.phydev;
+ struct hclge_config_mac_mode_cmd *req_app;
+ struct hclge_serdes_lb_cmd *req_serdes;
+ struct hclge_desc desc;
+ u8 loopback_en;
+ int ret;
+
+ req_app = (struct hclge_config_mac_mode_cmd *)desc.data;
+ req_serdes = (struct hclge_serdes_lb_cmd *)desc.data;
+
+ dev_info(&hdev->pdev->dev, "mac id: %u\n", hdev->hw.mac.mac_id);
+
+ hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_CONFIG_MAC_MODE, true);
+ ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+ if (ret) {
+ dev_err(&hdev->pdev->dev,
+ "failed to dump app loopback status, ret = %d\n", ret);
+ return;
+ }
+
+ loopback_en = hnae3_get_bit(le32_to_cpu(req_app->txrx_pad_fcs_loop_en),
+ HCLGE_MAC_APP_LP_B);
+ dev_info(&hdev->pdev->dev, "app loopback: %s\n",
+ loopback_en ? "on" : "off");
+
+ hclge_cmd_setup_basic_desc(&desc, HCLGE_OPC_SERDES_LOOPBACK, true);
+ ret = hclge_cmd_send(&hdev->hw, &desc, 1);
+ if (ret) {
+ dev_err(&hdev->pdev->dev,
+ "failed to dump serdes loopback status, ret = %d\n",
+ ret);
+ return;
+ }
+
+ loopback_en = req_serdes->enable & HCLGE_CMD_SERDES_SERIAL_INNER_LOOP_B;
+ dev_info(&hdev->pdev->dev, "serdes serial loopback: %s\n",
+ loopback_en ? "on" : "off");
+
+ loopback_en = req_serdes->enable &
+ HCLGE_CMD_SERDES_PARALLEL_INNER_LOOP_B;
+ dev_info(&hdev->pdev->dev, "serdes parallel loopback: %s\n",
+ loopback_en ? "on" : "off");
+
+ if (phydev)
+ dev_info(&hdev->pdev->dev, "phy loopback: %s\n",
+ phydev->loopback_enabled ? "on" : "off");
+}
+
/* hclge_dbg_dump_mac_tnl_status: print message about mac tnl interrupt
* @hdev: pointer to struct hclge_dev
*/
@@ -1271,6 +1322,7 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
{
#define DUMP_REG "dump reg"
#define DUMP_TM_MAP "dump tm map"
+#define DUMP_LOOPBACK "dump loopback"
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
@@ -1304,6 +1356,9 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, const char *cmd_buf)
&cmd_buf[sizeof("dump ncl_config")]);
} else if (strncmp(cmd_buf, "dump mac tnl status", 19) == 0) {
hclge_dbg_dump_mac_tnl_status(hdev);
+ } else if (strncmp(cmd_buf, DUMP_LOOPBACK,
+ strlen(DUMP_LOOPBACK)) == 0) {
+ hclge_dbg_dump_loopback(hdev, &cmd_buf[sizeof(DUMP_LOOPBACK)]);
} else if (strncmp(cmd_buf, "dump qs shaper", 14) == 0) {
hclge_dbg_dump_qs_shaper(hdev,
&cmd_buf[sizeof("dump qs shaper")]);
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 492bc94..51399db 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -824,6 +824,8 @@ static void hclge_get_mac_stat(struct hnae3_handle *handle,
static int hclge_parse_func_status(struct hclge_dev *hdev,
struct hclge_func_status_cmd *status)
{
+#define HCLGE_MAC_ID_MASK 0xF
+
if (!(status->pf_state & HCLGE_PF_STATE_DONE))
return -EINVAL;
@@ -833,6 +835,7 @@ static int hclge_parse_func_status(struct hclge_dev *hdev,
else
hdev->flag &= ~HCLGE_FLAG_MAIN;
+ hdev->hw.mac.mac_id = status->mac_id & HCLGE_MAC_ID_MASK;
return 0;
}
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
index f78cbb4c..71df23d 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.h
@@ -249,6 +249,7 @@ enum HCLGE_MAC_DUPLEX {
#define QUERY_ACTIVE_SPEED 1
struct hclge_mac {
+ u8 mac_id;
u8 phy_addr;
u8 flag;
u8 media_type; /* port media type, e.g. fibre/copper/backplane */
--
2.7.4
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