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net: hns3: Add "status register" information query function
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This patch prints status register information by module.

debugfs command:
echo dump reg [mode name] > cmd

Sample Command:
root@(none)# echo dump reg bios common > cmd
 BP_CPU_STATE: 0x0
 DFX_MSIX_INFO_NIC_0: 0xc000
 DFX_MSIX_INFO_NIC_1: 0xf
 DFX_MSIX_INFO_NIC_2: 0x2
 DFX_MSIX_INFO_NIC_3: 0x2
 DFX_MSIX_INFO_ROC_0: 0xc000
 DFX_MSIX_INFO_ROC_1: 0x0
 DFX_MSIX_INFO_ROC_2: 0x0
 DFX_MSIX_INFO_ROC_3: 0x0
root@(none)#

Signed-off-by: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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liuzhongzhu authored and David S. Miller committed Dec 15, 2018
1 parent 7737f1f commit 27cf979
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15 changes: 15 additions & 0 deletions drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,10 @@ static int hns3_dbg_bd_info(struct hnae3_handle *h, char *cmd_buf)

static void hns3_dbg_help(struct hnae3_handle *h)
{
#define HNS3_DBG_BUF_LEN 256

char printf_buf[HNS3_DBG_BUF_LEN];

dev_info(&h->pdev->dev, "available commands\n");
dev_info(&h->pdev->dev, "queue info [number]\n");
dev_info(&h->pdev->dev, "bd info [q_num] <bd index>\n");
Expand All @@ -211,6 +215,17 @@ static void hns3_dbg_help(struct hnae3_handle *h)
dev_info(&h->pdev->dev, "dump qos pri map\n");
dev_info(&h->pdev->dev, "dump qos buf cfg\n");
dev_info(&h->pdev->dev, "dump mng tbl\n");

memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
strncat(printf_buf, "dump reg [[bios common] [ssu <prt_id>]",
HNS3_DBG_BUF_LEN - 1);
strncat(printf_buf + strlen(printf_buf),
" [igu egu <prt_id>] [rpu <tc_queue_num>]",
HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
strncat(printf_buf + strlen(printf_buf),
" [rtc] [ppp] [rcb] [tqp <q_num>]]\n",
HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
dev_info(&h->pdev->dev, "%s", printf_buf);
}

static ssize_t hns3_dbg_cmd_read(struct file *filp, char __user *buffer,
Expand Down
14 changes: 14 additions & 0 deletions drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_cmd.h
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,20 @@ enum hclge_opcode_type {
HCLGE_OPC_QUERY_REG_NUM = 0x0040,
HCLGE_OPC_QUERY_32_BIT_REG = 0x0041,
HCLGE_OPC_QUERY_64_BIT_REG = 0x0042,
HCLGE_OPC_DFX_BD_NUM = 0x0043,
HCLGE_OPC_DFX_BIOS_COMMON_REG = 0x0044,
HCLGE_OPC_DFX_SSU_REG_0 = 0x0045,
HCLGE_OPC_DFX_SSU_REG_1 = 0x0046,
HCLGE_OPC_DFX_IGU_EGU_REG = 0x0047,
HCLGE_OPC_DFX_RPU_REG_0 = 0x0048,
HCLGE_OPC_DFX_RPU_REG_1 = 0x0049,
HCLGE_OPC_DFX_NCSI_REG = 0x004A,
HCLGE_OPC_DFX_RTC_REG = 0x004B,
HCLGE_OPC_DFX_PPP_REG = 0x004C,
HCLGE_OPC_DFX_RCB_REG = 0x004D,
HCLGE_OPC_DFX_TQP_REG = 0x004E,
HCLGE_OPC_DFX_SSU_REG_2 = 0x004F,
HCLGE_OPC_DFX_QUERY_CHIP_CAP = 0x0050,

/* MAC command */
HCLGE_OPC_CONFIG_MAC_MODE = 0x0301,
Expand Down
194 changes: 194 additions & 0 deletions drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_debugfs.c
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,198 @@
#include "hclge_tm.h"
#include "hnae3.h"

static int hclge_dbg_get_dfx_bd_num(struct hclge_dev *hdev, int offset)
{
struct hclge_desc desc[4];
int ret;

hclge_cmd_setup_basic_desc(&desc[0], HCLGE_OPC_DFX_BD_NUM, true);
desc[0].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
hclge_cmd_setup_basic_desc(&desc[1], HCLGE_OPC_DFX_BD_NUM, true);
desc[1].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
hclge_cmd_setup_basic_desc(&desc[2], HCLGE_OPC_DFX_BD_NUM, true);
desc[2].flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
hclge_cmd_setup_basic_desc(&desc[3], HCLGE_OPC_DFX_BD_NUM, true);

ret = hclge_cmd_send(&hdev->hw, desc, 4);
if (ret != HCLGE_CMD_EXEC_SUCCESS) {
dev_err(&hdev->pdev->dev,
"get dfx bdnum fail, status is %d.\n", ret);
return ret;
}

return (int)desc[offset / 6].data[offset % 6];
}

static int hclge_dbg_cmd_send(struct hclge_dev *hdev,
struct hclge_desc *desc_src,
int index, int bd_num,
enum hclge_opcode_type cmd)
{
struct hclge_desc *desc = desc_src;
int ret, i;

hclge_cmd_setup_basic_desc(desc, cmd, true);
desc->data[0] = cpu_to_le32(index);

for (i = 1; i < bd_num; i++) {
desc->flag |= cpu_to_le16(HCLGE_CMD_FLAG_NEXT);
desc++;
hclge_cmd_setup_basic_desc(desc, cmd, true);
}

ret = hclge_cmd_send(&hdev->hw, desc_src, bd_num);
if (ret) {
dev_err(&hdev->pdev->dev,
"read reg cmd send fail, status is %d.\n", ret);
return ret;
}

return ret;
}

static void hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
struct hclge_dbg_dfx_message *dfx_message,
char *cmd_buf, int msg_num, int offset,
enum hclge_opcode_type cmd)
{
struct hclge_desc *desc_src;
struct hclge_desc *desc;
int bd_num, buf_len;
int ret, i;
int index;
int max;

ret = kstrtouint(cmd_buf, 10, &index);
index = (ret != 0) ? 0 : index;

bd_num = hclge_dbg_get_dfx_bd_num(hdev, offset);
if (bd_num <= 0)
return;

buf_len = sizeof(struct hclge_desc) * bd_num;
desc_src = kzalloc(buf_len, GFP_KERNEL);
if (!desc_src) {
dev_err(&hdev->pdev->dev, "call kzalloc failed\n");
return;
}

desc = desc_src;
ret = hclge_dbg_cmd_send(hdev, desc, index, bd_num, cmd);
if (ret != HCLGE_CMD_EXEC_SUCCESS) {
kfree(desc_src);
return;
}

max = (bd_num * 6) <= msg_num ? (bd_num * 6) : msg_num;

desc = desc_src;
for (i = 0; i < max; i++) {
(((i / 6) > 0) && ((i % 6) == 0)) ? desc++ : desc;
if (dfx_message->flag)
dev_info(&hdev->pdev->dev, "%s: 0x%x\n",
dfx_message->message, desc->data[i % 6]);

dfx_message++;
}

kfree(desc_src);
}

static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, char *cmd_buf)
{
int msg_num;

if (strncmp(&cmd_buf[9], "bios common", 11) == 0) {
msg_num = sizeof(hclge_dbg_bios_common_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_bios_common_reg,
&cmd_buf[21], msg_num,
HCLGE_DBG_DFX_BIOS_OFFSET,
HCLGE_OPC_DFX_BIOS_COMMON_REG);
} else if (strncmp(&cmd_buf[9], "ssu", 3) == 0) {
msg_num = sizeof(hclge_dbg_ssu_reg_0) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_ssu_reg_0,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_SSU_0_OFFSET,
HCLGE_OPC_DFX_SSU_REG_0);

msg_num = sizeof(hclge_dbg_ssu_reg_1) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_ssu_reg_1,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_SSU_1_OFFSET,
HCLGE_OPC_DFX_SSU_REG_1);

msg_num = sizeof(hclge_dbg_ssu_reg_2) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_ssu_reg_2,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_SSU_2_OFFSET,
HCLGE_OPC_DFX_SSU_REG_2);
} else if (strncmp(&cmd_buf[9], "igu egu", 7) == 0) {
msg_num = sizeof(hclge_dbg_igu_egu_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_igu_egu_reg,
&cmd_buf[17], msg_num,
HCLGE_DBG_DFX_IGU_OFFSET,
HCLGE_OPC_DFX_IGU_EGU_REG);
} else if (strncmp(&cmd_buf[9], "rpu", 3) == 0) {
msg_num = sizeof(hclge_dbg_rpu_reg_0) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_rpu_reg_0,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_RPU_0_OFFSET,
HCLGE_OPC_DFX_RPU_REG_0);

msg_num = sizeof(hclge_dbg_rpu_reg_1) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_rpu_reg_1,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_RPU_1_OFFSET,
HCLGE_OPC_DFX_RPU_REG_1);
} else if (strncmp(&cmd_buf[9], "ncsi", 4) == 0) {
msg_num = sizeof(hclge_dbg_ncsi_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_ncsi_reg,
&cmd_buf[14], msg_num,
HCLGE_DBG_DFX_NCSI_OFFSET,
HCLGE_OPC_DFX_NCSI_REG);
} else if (strncmp(&cmd_buf[9], "rtc", 3) == 0) {
msg_num = sizeof(hclge_dbg_rtc_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_rtc_reg,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_RTC_OFFSET,
HCLGE_OPC_DFX_RTC_REG);
} else if (strncmp(&cmd_buf[9], "ppp", 3) == 0) {
msg_num = sizeof(hclge_dbg_ppp_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_ppp_reg,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_PPP_OFFSET,
HCLGE_OPC_DFX_PPP_REG);
} else if (strncmp(&cmd_buf[9], "rcb", 3) == 0) {
msg_num = sizeof(hclge_dbg_rcb_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_rcb_reg,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_RCB_OFFSET,
HCLGE_OPC_DFX_RCB_REG);
} else if (strncmp(&cmd_buf[9], "tqp", 3) == 0) {
msg_num = sizeof(hclge_dbg_tqp_reg) /
sizeof(struct hclge_dbg_dfx_message);
hclge_dbg_dump_reg_common(hdev, hclge_dbg_tqp_reg,
&cmd_buf[13], msg_num,
HCLGE_DBG_DFX_TQP_OFFSET,
HCLGE_OPC_DFX_TQP_REG);
} else {
dev_info(&hdev->pdev->dev, "unknown command\n");
return;
}
}

static void hclge_title_idx_print(struct hclge_dev *hdev, bool flag, int index,
char *title_buf, char *true_buf,
char *false_buf)
Expand Down Expand Up @@ -544,6 +736,8 @@ int hclge_dbg_run_cmd(struct hnae3_handle *handle, char *cmd_buf)
hclge_dbg_dump_qos_buf_cfg(hdev);
} else if (strncmp(cmd_buf, "dump mng tbl", 12) == 0) {
hclge_dbg_dump_mng_table(hdev);
} else if (strncmp(cmd_buf, "dump reg", 8) == 0) {
hclge_dbg_dump_reg_cmd(hdev, cmd_buf);
} else {
dev_info(&hdev->pdev->dev, "unknown command\n");
return -EINVAL;
Expand Down
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