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Subject[PATCH net-next 09/12] net: hns3: add support for dump ncl config by debugfs
Date
From: Weihang Li <liweihang@hisilicon.com>

This patch allow users to dump content of NCL_CONFIG by using debugfs
command.
Command format:
echo dump ncl_config <offset> <length> > cmd
It will print as follows:
hns3 0000:7d:00.0: offset | data
hns3 0000:7d:00.0: 0x0000 | 0x00000020
hns3 0000:7d:00.0: 0x0004 | 0x00000400
hns3 0000:7d:00.0: 0x0008 | 0x08020401

Signed-off-by: Weihang Li <liweihang@hisilicon.com>
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c | 1 +
.../net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h | 3 +
.../ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c | 66 ++++++++++++++++++++++
3 files changed, 70 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
index c46da81..5ccb701 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
@@ -248,6 +248,7 @@ static void hns3_dbg_help(struct hnae3_handle *h)
dev_info(&h->pdev->dev, "dump qos buf cfg\n");
dev_info(&h->pdev->dev, "dump mng tbl\n");
dev_info(&h->pdev->dev, "dump reset info\n");
+ dev_info(&h->pdev->dev, "dump ncl_config <offset> <length>(in hex)\n");

memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
strncat(printf_buf, "dump reg [[bios common] [ssu <prt_id>]",
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
index 3714733..124d78e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
@@ -237,6 +237,9 @@ enum hclge_opcode_type {
/* Led command */
HCLGE_OPC_LED_STATUS_CFG = 0xB000,

+ /* NCL config command */
+ HCLGE_OPC_QUERY_NCL_CONFIG = 0x7011,
+
/* SFP command */
HCLGE_OPC_SFP_GET_SPEED = 0x7104,

diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
index d9782c7..6a774cc 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
@@ -921,6 +921,69 @@ static void hclge_dbg_dump_rst_info(struct hclge_dev *hdev)
hdev->rst_stats.reset_cnt);
}

+/* hclge_dbg_dump_ncl_config: print specified range of NCL_CONFIG file
+ * @hdev: pointer to struct hclge_dev
+ * @cmd_buf: string that contains offset and length
+ */
+static void hclge_dbg_dump_ncl_config(struct hclge_dev *hdev, char *cmd_buf)
+{
+#define HCLGE_MAX_NCL_CONFIG_OFFSET 4096
+#define HCLGE_MAX_NCL_CONFIG_LENGTH (20 + 24 * 4)
+#define HCLGE_CMD_DATA_NUM 6
+
+ struct hclge_desc desc[5];
+ u32 byte_offset;
+ int bd_num = 5;
+ int offset;
+ int length;
+ int data0;
+ int ret;
+ int i;
+ int j;
+
+ ret = sscanf(cmd_buf, "%x %x", &offset, &length);
+ if (ret != 2 || offset >= HCLGE_MAX_NCL_CONFIG_OFFSET ||
+ length > HCLGE_MAX_NCL_CONFIG_OFFSET - offset) {
+ dev_err(&hdev->pdev->dev, "Invalid offset or length.\n");
+ return;
+ }
+ if (offset < 0 || length <= 0) {
+ dev_err(&hdev->pdev->dev, "Non-positive offset or length.\n");
+ return;
+ }
+
+ dev_info(&hdev->pdev->dev, "offset | data\n");
+
+ while (length > 0) {
+ data0 = offset;
+ if (length >= HCLGE_MAX_NCL_CONFIG_LENGTH)
+ data0 |= HCLGE_MAX_NCL_CONFIG_LENGTH << 16;
+ else
+ data0 |= length << 16;
+ ret = hclge_dbg_cmd_send(hdev, desc, data0, bd_num,
+ HCLGE_OPC_QUERY_NCL_CONFIG);
+ if (ret)
+ return;
+
+ byte_offset = offset;
+ for (i = 0; i < bd_num; i++) {
+ for (j = 0; j < HCLGE_CMD_DATA_NUM; j++) {
+ if (i == 0 && j == 0)
+ continue;
+
+ dev_info(&hdev->pdev->dev, "0x%04x | 0x%08x\n",
+ byte_offset,
+ le32_to_cpu(desc[i].data[j]));
+ byte_offset += sizeof(u32);
+ length -= sizeof(u32);
+ if (length <= 0)
+ return;
+ }
+ }
+ offset += HCLGE_MAX_NCL_CONFIG_LENGTH;
+ }
+}
+
int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf)
{
struct hclge_vport *vport = hclge_get_vport(handle);
@@ -946,6 +1009,9 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf)
hclge_dbg_dump_reg_cmd(hdev, cmd_buf);
} else if (strncmp(cmd_buf, "dump reset info", 15) == 0) {
hclge_dbg_dump_rst_info(hdev);
+ } else if (strncmp(cmd_buf, "dump ncl_config", 15) == 0) {
+ hclge_dbg_dump_ncl_config(hdev,
+ &cmd_buf[sizeof("dump ncl_config")]);
} else {
dev_info(&hdev->pdev->dev, "unknown command\n");
return -EINVAL;
--
2.7.4
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