Commit ffd140e2 authored by Weihang Li's avatar Weihang Li Committed by David S. Miller
Browse files

net: hns3: add support for dump ncl config by debugfs 



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: default avatarWeihang Li <liweihang@hisilicon.com>
Signed-off-by: default avatarPeng Li <lipeng321@huawei.com>
Signed-off-by: default avatarHuazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent bb87be87

drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c

+1 −0
Original line number Diff line number Diff line
@@ -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>]",

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

+3 −0
Original line number Diff line number Diff line
@@ -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,

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

+66 −0
Original line number Diff line number Diff line
@@ -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;

CRA Git | Maintained and supported by SUSTech CRA and CCSE