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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: Weihang Li <liweihang@hisilicon.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:
Weihang Li 2019-04-19 11:05:44 +08:00 committed by David S. Miller
parent bb87be87b1
commit ffd140e2ea
3 changed files with 70 additions and 0 deletions
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1
drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
View File

@ -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>]",

3
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
View File

@ -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,

66
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
View File

@ -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;