text: // SPDX-License-Identifier: GPL-2.0+
  /* Copyright (c) 2018-2019 Hisilicon Limited. */
  
  #include <linux/debugfs.h>
  #include <linux/device.h>
  
  #include "hnae3.h"
  #include "hns3_debugfs.h"
  #include "hns3_enet.h"
  
  static struct dentry *hns3_dbgfs_root;
  
  static struct hns3_dbg_dentry_info hns3_dbg_dentry[] = {
  	{
  		.name = "tm"
  	},
  	{
  		.name = "tx_bd_info"
  	},
  	{
  		.name = "rx_bd_info"
  	},
  	{
  		.name = "mac_list"
  	},
  	{
  		.name = "reg"
  	},
  	{
  		.name = "queue"
  	},
  	{
  		.name = "fd"
  	},
  	/* keep common at the bottom and add new directory above */
  	{
  		.name = "common"
  	},
  };
  
  static int hns3_dbg_bd_file_init(struct hnae3_handle *handle, u32 cmd);
  static int hns3_dbg_common_file_init(struct hnae3_handle *handle, u32 cmd);
  
  static struct hns3_dbg_cmd_info hns3_dbg_cmd[] = {
  	{
  		.name = "tm_nodes",
  		.cmd = HNAE3_DBG_CMD_TM_NODES,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tm_priority",
  		.cmd = HNAE3_DBG_CMD_TM_PRI,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tm_qset",
  		.cmd = HNAE3_DBG_CMD_TM_QSET,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tm_map",
  		.cmd = HNAE3_DBG_CMD_TM_MAP,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN_1MB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tm_pg",
  		.cmd = HNAE3_DBG_CMD_TM_PG,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tm_port",
  		.cmd = HNAE3_DBG_CMD_TM_PORT,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tc_sch_info",
  		.cmd = HNAE3_DBG_CMD_TC_SCH_INFO,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "qos_pause_cfg",
  		.cmd = HNAE3_DBG_CMD_QOS_PAUSE_CFG,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "qos_pri_map",
  		.cmd = HNAE3_DBG_CMD_QOS_PRI_MAP,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "qos_buf_cfg",
  		.cmd = HNAE3_DBG_CMD_QOS_BUF_CFG,
  		.dentry = HNS3_DBG_DENTRY_TM,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "dev_info",
  		.cmd = HNAE3_DBG_CMD_DEV_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tx_bd_queue",
  		.cmd = HNAE3_DBG_CMD_TX_BD,
  		.dentry = HNS3_DBG_DENTRY_TX_BD,
  		.buf_len = HNS3_DBG_READ_LEN_4MB,
  		.init = hns3_dbg_bd_file_init,
  	},
  	{
  		.name = "rx_bd_queue",
  		.cmd = HNAE3_DBG_CMD_RX_BD,
  		.dentry = HNS3_DBG_DENTRY_RX_BD,
  		.buf_len = HNS3_DBG_READ_LEN_4MB,
  		.init = hns3_dbg_bd_file_init,
  	},
  	{
  		.name = "uc",
  		.cmd = HNAE3_DBG_CMD_MAC_UC,
  		.dentry = HNS3_DBG_DENTRY_MAC,
  		.buf_len = HNS3_DBG_READ_LEN_128KB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "mc",
  		.cmd = HNAE3_DBG_CMD_MAC_MC,
  		.dentry = HNS3_DBG_DENTRY_MAC,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "mng_tbl",
  		.cmd = HNAE3_DBG_CMD_MNG_TBL,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "loopback",
  		.cmd = HNAE3_DBG_CMD_LOOPBACK,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "interrupt_info",
  		.cmd = HNAE3_DBG_CMD_INTERRUPT_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "reset_info",
  		.cmd = HNAE3_DBG_CMD_RESET_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "imp_info",
  		.cmd = HNAE3_DBG_CMD_IMP_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "ncl_config",
  		.cmd = HNAE3_DBG_CMD_NCL_CONFIG,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN_128KB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "mac_tnl_status",
  		.cmd = HNAE3_DBG_CMD_MAC_TNL_STATUS,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "bios_common",
  		.cmd = HNAE3_DBG_CMD_REG_BIOS_COMMON,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "ssu",
  		.cmd = HNAE3_DBG_CMD_REG_SSU,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "igu_egu",
  		.cmd = HNAE3_DBG_CMD_REG_IGU_EGU,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "rpu",
  		.cmd = HNAE3_DBG_CMD_REG_RPU,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "ncsi",
  		.cmd = HNAE3_DBG_CMD_REG_NCSI,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "rtc",
  		.cmd = HNAE3_DBG_CMD_REG_RTC,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "ppp",
  		.cmd = HNAE3_DBG_CMD_REG_PPP,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "rcb",
  		.cmd = HNAE3_DBG_CMD_REG_RCB,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tqp",
  		.cmd = HNAE3_DBG_CMD_REG_TQP,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN_128KB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "mac",
  		.cmd = HNAE3_DBG_CMD_REG_MAC,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "dcb",
  		.cmd = HNAE3_DBG_CMD_REG_DCB,
  		.dentry = HNS3_DBG_DENTRY_REG,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "queue_map",
  		.cmd = HNAE3_DBG_CMD_QUEUE_MAP,
  		.dentry = HNS3_DBG_DENTRY_QUEUE,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "rx_queue_info",
  		.cmd = HNAE3_DBG_CMD_RX_QUEUE_INFO,
  		.dentry = HNS3_DBG_DENTRY_QUEUE,
  		.buf_len = HNS3_DBG_READ_LEN_1MB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "tx_queue_info",
  		.cmd = HNAE3_DBG_CMD_TX_QUEUE_INFO,
  		.dentry = HNS3_DBG_DENTRY_QUEUE,
  		.buf_len = HNS3_DBG_READ_LEN_1MB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "fd_tcam",
  		.cmd = HNAE3_DBG_CMD_FD_TCAM,
  		.dentry = HNS3_DBG_DENTRY_FD,
  		.buf_len = HNS3_DBG_READ_LEN_1MB,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "service_task_info",
  		.cmd = HNAE3_DBG_CMD_SERV_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "vlan_config",
  		.cmd = HNAE3_DBG_CMD_VLAN_CONFIG,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "ptp_info",
  		.cmd = HNAE3_DBG_CMD_PTP_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "fd_counter",
  		.cmd = HNAE3_DBG_CMD_FD_COUNTER,
  		.dentry = HNS3_DBG_DENTRY_FD,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "umv_info",
  		.cmd = HNAE3_DBG_CMD_UMV_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "page_pool_info",
  		.cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN,
  		.init = hns3_dbg_common_file_init,
  	},
  	{
  		.name = "coalesce_info",
  		.cmd = HNAE3_DBG_CMD_COAL_INFO,
  		.dentry = HNS3_DBG_DENTRY_COMMON,
  		.buf_len = HNS3_DBG_READ_LEN_1MB,
  		.init = hns3_dbg_common_file_init,
  	},
  };
  
  static struct hns3_dbg_cap_info hns3_dbg_cap[] = {
  	{
  		.name = "support FD",
  		.cap_bit = HNAE3_DEV_SUPPORT_FD_B,
  	}, {
  		.name = "support GRO",
  		.cap_bit = HNAE3_DEV_SUPPORT_GRO_B,
  	}, {
  		.name = "support FEC",
  		.cap_bit = HNAE3_DEV_SUPPORT_FEC_B,
  	}, {
  		.name = "support UDP GSO",
  		.cap_bit = HNAE3_DEV_SUPPORT_UDP_GSO_B,
  	}, {
  		.name = "support PTP",
  		.cap_bit = HNAE3_DEV_SUPPORT_PTP_B,
  	}, {
  		.name = "support INT QL",
  		.cap_bit = HNAE3_DEV_SUPPORT_INT_QL_B,
  	}, {
  		.name = "support HW TX csum",
  		.cap_bit = HNAE3_DEV_SUPPORT_HW_TX_CSUM_B,
  	}, {
  		.name = "support UDP tunnel csum",
  		.cap_bit = HNAE3_DEV_SUPPORT_UDP_TUNNEL_CSUM_B,
  	}, {
  		.name = "support TX push",
  		.cap_bit = HNAE3_DEV_SUPPORT_TX_PUSH_B,
  	}, {
  		.name = "support imp-controlled PHY",
  		.cap_bit = HNAE3_DEV_SUPPORT_PHY_IMP_B,
  	}, {
  		.name = "support imp-controlled RAS",
  		.cap_bit = HNAE3_DEV_SUPPORT_RAS_IMP_B,
  	}, {
  		.name = "support rxd advanced layout",
  		.cap_bit = HNAE3_DEV_SUPPORT_RXD_ADV_LAYOUT_B,
  	}, {
  		.name = "support port vlan bypass",
  		.cap_bit = HNAE3_DEV_SUPPORT_PORT_VLAN_BYPASS_B,
  	}, {
  		.name = "support modify vlan filter state",
  		.cap_bit = HNAE3_DEV_SUPPORT_VLAN_FLTR_MDF_B,
  	}
  };
  
  static const struct hns3_dbg_item coal_info_items[] = {
  	{ "VEC_ID", 2 },
  	{ "ALGO_STATE", 2 },
  	{ "PROFILE_ID", 2 },
  	{ "CQE_MODE", 2 },
  	{ "TUNE_STATE", 2 },
  	{ "STEPS_LEFT", 2 },
  	{ "STEPS_RIGHT", 2 },
  	{ "TIRED", 2 },
  	{ "SW_GL", 2 },
  	{ "SW_QL", 2 },
  	{ "HW_GL", 2 },
  	{ "HW_QL", 2 },
  };
  
  static const char * const dim_cqe_mode_str[] = { "EQE", "CQE" };
  static const char * const dim_state_str[] = { "START", "IN_PROG", "APPLY" };
  static const char * const
  dim_tune_stat_str[] = { "ON_TOP", "TIRED", "RIGHT", "LEFT" };
  
  static void hns3_dbg_fill_content(char *content, u16 len,
  				  const struct hns3_dbg_item *items,
  				  const char **result, u16 size)
  {
  	char *pos = content;
  	u16 i;
  
  	memset(content, ' ', len);
  	for (i = 0; i < size; i++) {
  		if (result)
  			strncpy(pos, result[i], strlen(result[i]));
  		else
  			strncpy(pos, items[i].name, strlen(items[i].name));
  
  		pos += strlen(items[i].name) + items[i].interval;
  	}
  
  	*pos++ = '\n';
  	*pos++ = '\0';
  }
  
  static void hns3_get_coal_info(struct hns3_enet_tqp_vector *tqp_vector,
  			       char **result, int i, bool is_tx)
  {
  	unsigned int gl_offset, ql_offset;
  	struct hns3_enet_coalesce *coal;
  	unsigned int reg_val;
  	unsigned int j = 0;
  	struct dim *dim;
  	bool ql_enable;
  
  	if (is_tx) {
  		coal = &tqp_vector->tx_group.coal;
  		dim = &tqp_vector->tx_group.dim;
  		gl_offset = HNS3_VECTOR_GL1_OFFSET;
  		ql_offset = HNS3_VECTOR_TX_QL_OFFSET;
  		ql_enable = tqp_vector->tx_group.coal.ql_enable;
  	} else {
  		coal = &tqp_vector->rx_group.coal;
  		dim = &tqp_vector->rx_group.dim;
  		gl_offset = HNS3_VECTOR_GL0_OFFSET;
  		ql_offset = HNS3_VECTOR_RX_QL_OFFSET;
  		ql_enable = tqp_vector->rx_group.coal.ql_enable;
  	}
  
  	sprintf(result[j++], "%d", i);
  	sprintf(result[j++], "%s", dim_state_str[dim->state]);
  	sprintf(result[j++], "%u", dim->profile_ix);
  	sprintf(result[j++], "%s", dim_cqe_mode_str[dim->mode]);
  	sprintf(result[j++], "%s",
  		dim_tune_stat_str[dim->tune_state]);
  	sprintf(result[j++], "%u", dim->steps_left);
  	sprintf(result[j++], "%u", dim->steps_right);
  	sprintf(result[j++], "%u", dim->tired);
  	sprintf(result[j++], "%u", coal->int_gl);
  	sprintf(result[j++], "%u", coal->int_ql);
  	reg_val = readl(tqp_vector->mask_addr + gl_offset) &
  		  HNS3_VECTOR_GL_MASK;
  	sprintf(result[j++], "%u", reg_val);
  	if (ql_enable) {
  		reg_val = readl(tqp_vector->mask_addr + ql_offset) &
  			  HNS3_VECTOR_QL_MASK;
  		sprintf(result[j++], "%u", reg_val);
  	} else {
  		sprintf(result[j++], "NA");
  	}
  }
  
  static void hns3_dump_coal_info(struct hnae3_handle *h, char *buf, int len,
  				int *pos, bool is_tx)
  {
  	char data_str[ARRAY_SIZE(coal_info_items)][HNS3_DBG_DATA_STR_LEN];
  	char *result[ARRAY_SIZE(coal_info_items)];
  	struct hns3_enet_tqp_vector *tqp_vector;
  	struct hns3_nic_priv *priv = h->priv;
  	char content[HNS3_DBG_INFO_LEN];
  	unsigned int i;
  
  	for (i = 0; i < ARRAY_SIZE(coal_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	*pos += scnprintf(buf + *pos, len - *pos,
  			  "%s interrupt coalesce info:\n",
  			  is_tx ? "tx" : "rx");
  	hns3_dbg_fill_content(content, sizeof(content), coal_info_items,
  			      NULL, ARRAY_SIZE(coal_info_items));
  	*pos += scnprintf(buf + *pos, len - *pos, "%s", content);
  
  	for (i = 0; i < priv->vector_num; i++) {
  		tqp_vector = &priv->tqp_vector[i];
  		hns3_get_coal_info(tqp_vector, result, i, is_tx);
  		hns3_dbg_fill_content(content, sizeof(content), coal_info_items,
  				      (const char **)result,
  				      ARRAY_SIZE(coal_info_items));
  		*pos += scnprintf(buf + *pos, len - *pos, "%s", content);
  	}
  }
  
  static int hns3_dbg_coal_info(struct hnae3_handle *h, char *buf, int len)
  {
  	int pos = 0;
  
  	hns3_dump_coal_info(h, buf, len, &pos, true);
  	pos += scnprintf(buf + pos, len - pos, "\n");
  	hns3_dump_coal_info(h, buf, len, &pos, false);
  
  	return 0;
  }
  
  static const struct hns3_dbg_item tx_spare_info_items[] = {
  	{ "QUEUE_ID", 2 },
  	{ "COPYBREAK", 2 },
  	{ "LEN", 7 },
  	{ "NTU", 4 },
  	{ "NTC", 4 },
  	{ "LTC", 4 },
  	{ "DMA", 17 },
  };
  
  static void hns3_dbg_tx_spare_info(struct hns3_enet_ring *ring, char *buf,
  				   int len, u32 ring_num, int *pos)
  {
  	char data_str[ARRAY_SIZE(tx_spare_info_items)][HNS3_DBG_DATA_STR_LEN];
  	struct hns3_tx_spare *tx_spare = ring->tx_spare;
  	char *result[ARRAY_SIZE(tx_spare_info_items)];
  	char content[HNS3_DBG_INFO_LEN];
  	u32 i, j;
  
  	if (!tx_spare) {
  		*pos += scnprintf(buf + *pos, len - *pos,
  				  "tx spare buffer is not enabled\n");
  		return;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(tx_spare_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	*pos += scnprintf(buf + *pos, len - *pos, "tx spare buffer info\n");
  	hns3_dbg_fill_content(content, sizeof(content), tx_spare_info_items,
  			      NULL, ARRAY_SIZE(tx_spare_info_items));
  	*pos += scnprintf(buf + *pos, len - *pos, "%s", content);
  
  	for (i = 0; i < ring_num; i++) {
  		j = 0;
  		sprintf(result[j++], "%8u", i);
  		sprintf(result[j++], "%9u", ring->tx_copybreak);
  		sprintf(result[j++], "%3u", tx_spare->len);
  		sprintf(result[j++], "%3u", tx_spare->next_to_use);
  		sprintf(result[j++], "%3u", tx_spare->next_to_clean);
  		sprintf(result[j++], "%3u", tx_spare->last_to_clean);
  		sprintf(result[j++], "%pad", &tx_spare->dma);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      tx_spare_info_items,
  				      (const char **)result,
  				      ARRAY_SIZE(tx_spare_info_items));
  		*pos += scnprintf(buf + *pos, len - *pos, "%s", content);
  	}
  }
  
  static const struct hns3_dbg_item rx_queue_info_items[] = {
  	{ "QUEUE_ID", 2 },
  	{ "BD_NUM", 2 },
  	{ "BD_LEN", 2 },
  	{ "TAIL", 2 },
  	{ "HEAD", 2 },
  	{ "FBDNUM", 2 },
  	{ "PKTNUM", 5 },
  	{ "COPYBREAK", 2 },
  	{ "RING_EN", 2 },
  	{ "RX_RING_EN", 2 },
  	{ "BASE_ADDR", 10 },
  };
  
  static void hns3_dump_rx_queue_info(struct hns3_enet_ring *ring,
  				    struct hnae3_ae_dev *ae_dev, char **result,
  				    u32 index)
  {
  	u32 base_add_l, base_add_h;
  	u32 j = 0;
  
  	sprintf(result[j++], "%8u", index);
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_BD_NUM_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_BD_LEN_REG));
  
  	sprintf(result[j++], "%4u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_TAIL_REG));
  
  	sprintf(result[j++], "%4u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_HEAD_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_FBDNUM_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_RX_RING_PKTNUM_RECORD_REG));
  	sprintf(result[j++], "%9u", ring->rx_copybreak);
  
  	sprintf(result[j++], "%7s", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_EN_REG) ? "on" : "off");
  
  	if (hnae3_ae_dev_tqp_txrx_indep_supported(ae_dev))
  		sprintf(result[j++], "%10s", readl_relaxed(ring->tqp->io_base +
  			HNS3_RING_RX_EN_REG) ? "on" : "off");
  	else
  		sprintf(result[j++], "%10s", "NA");
  
  	base_add_h = readl_relaxed(ring->tqp->io_base +
  					HNS3_RING_RX_RING_BASEADDR_H_REG);
  	base_add_l = readl_relaxed(ring->tqp->io_base +
  					HNS3_RING_RX_RING_BASEADDR_L_REG);
  	sprintf(result[j++], "0x%08x%08x", base_add_h, base_add_l);
  }
  
  static int hns3_dbg_rx_queue_info(struct hnae3_handle *h,
  				  char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(rx_queue_info_items)][HNS3_DBG_DATA_STR_LEN];
  	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(h->pdev);
  	char *result[ARRAY_SIZE(rx_queue_info_items)];
  	struct hns3_nic_priv *priv = h->priv;
  	char content[HNS3_DBG_INFO_LEN];
  	struct hns3_enet_ring *ring;
  	int pos = 0;
  	u32 i;
  
  	if (!priv->ring) {
  		dev_err(&h->pdev->dev, "priv->ring is NULL\n");
  		return -EFAULT;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(rx_queue_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	hns3_dbg_fill_content(content, sizeof(content), rx_queue_info_items,
  			      NULL, ARRAY_SIZE(rx_queue_info_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  	for (i = 0; i < h->kinfo.num_tqps; i++) {
  		/* Each cycle needs to determine whether the instance is reset,
  		 * to prevent reference to invalid memory. And need to ensure
  		 * that the following code is executed within 100ms.
  		 */
  		if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
  		    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
  			return -EPERM;
  
  		ring = &priv->ring[(u32)(i + h->kinfo.num_tqps)];
  		hns3_dump_rx_queue_info(ring, ae_dev, result, i);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      rx_queue_info_items,
  				      (const char **)result,
  				      ARRAY_SIZE(rx_queue_info_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	return 0;
  }
  
  static const struct hns3_dbg_item tx_queue_info_items[] = {
  	{ "QUEUE_ID", 2 },
  	{ "BD_NUM", 2 },
  	{ "TC", 2 },
  	{ "TAIL", 2 },
  	{ "HEAD", 2 },
  	{ "FBDNUM", 2 },
  	{ "OFFSET", 2 },
  	{ "PKTNUM", 5 },
  	{ "RING_EN", 2 },
  	{ "TX_RING_EN", 2 },
  	{ "BASE_ADDR", 10 },
  };
  
  static void hns3_dump_tx_queue_info(struct hns3_enet_ring *ring,
  				    struct hnae3_ae_dev *ae_dev, char **result,
  				    u32 index)
  {
  	u32 base_add_l, base_add_h;
  	u32 j = 0;
  
  	sprintf(result[j++], "%8u", index);
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_BD_NUM_REG));
  
  	sprintf(result[j++], "%2u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_TC_REG));
  
  	sprintf(result[j++], "%4u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_TAIL_REG));
  
  	sprintf(result[j++], "%4u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_HEAD_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_FBDNUM_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_OFFSET_REG));
  
  	sprintf(result[j++], "%6u", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_TX_RING_PKTNUM_RECORD_REG));
  
  	sprintf(result[j++], "%7s", readl_relaxed(ring->tqp->io_base +
  		HNS3_RING_EN_REG) ? "on" : "off");
  
  	if (hnae3_ae_dev_tqp_txrx_indep_supported(ae_dev))
  		sprintf(result[j++], "%10s", readl_relaxed(ring->tqp->io_base +
  			HNS3_RING_TX_EN_REG) ? "on" : "off");
  	else
  		sprintf(result[j++], "%10s", "NA");
  
  	base_add_h = readl_relaxed(ring->tqp->io_base +
  					HNS3_RING_TX_RING_BASEADDR_H_REG);
  	base_add_l = readl_relaxed(ring->tqp->io_base +
  					HNS3_RING_TX_RING_BASEADDR_L_REG);
  	sprintf(result[j++], "0x%08x%08x", base_add_h, base_add_l);
  }
  
  static int hns3_dbg_tx_queue_info(struct hnae3_handle *h,
  				  char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(tx_queue_info_items)][HNS3_DBG_DATA_STR_LEN];
  	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(h->pdev);
  	char *result[ARRAY_SIZE(tx_queue_info_items)];
  	struct hns3_nic_priv *priv = h->priv;
  	char content[HNS3_DBG_INFO_LEN];
  	struct hns3_enet_ring *ring;
  	int pos = 0;
  	u32 i;
  
  	if (!priv->ring) {
  		dev_err(&h->pdev->dev, "priv->ring is NULL\n");
  		return -EFAULT;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(tx_queue_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	hns3_dbg_fill_content(content, sizeof(content), tx_queue_info_items,
  			      NULL, ARRAY_SIZE(tx_queue_info_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  
  	for (i = 0; i < h->kinfo.num_tqps; i++) {
  		/* Each cycle needs to determine whether the instance is reset,
  		 * to prevent reference to invalid memory. And need to ensure
  		 * that the following code is executed within 100ms.
  		 */
  		if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
  		    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
  			return -EPERM;
  
  		ring = &priv->ring[i];
  		hns3_dump_tx_queue_info(ring, ae_dev, result, i);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      tx_queue_info_items,
  				      (const char **)result,
  				      ARRAY_SIZE(tx_queue_info_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	hns3_dbg_tx_spare_info(ring, buf, len, h->kinfo.num_tqps, &pos);
  
  	return 0;
  }
  
  static const struct hns3_dbg_item queue_map_items[] = {
  	{ "local_queue_id", 2 },
  	{ "global_queue_id", 2 },
  	{ "vector_id", 2 },
  };
  
  static int hns3_dbg_queue_map(struct hnae3_handle *h, char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(queue_map_items)][HNS3_DBG_DATA_STR_LEN];
  	char *result[ARRAY_SIZE(queue_map_items)];
  	struct hns3_nic_priv *priv = h->priv;
  	char content[HNS3_DBG_INFO_LEN];
  	int pos = 0;
  	int j;
  	u32 i;
  
  	if (!h->ae_algo->ops->get_global_queue_id)
  		return -EOPNOTSUPP;
  
  	for (i = 0; i < ARRAY_SIZE(queue_map_items); i++)
  		result[i] = &data_str[i][0];
  
  	hns3_dbg_fill_content(content, sizeof(content), queue_map_items,
  			      NULL, ARRAY_SIZE(queue_map_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  	for (i = 0; i < h->kinfo.num_tqps; i++) {
  		if (!priv->ring || !priv->ring[i].tqp_vector)
  			continue;
  		j = 0;
  		sprintf(result[j++], "%u", i);
  		sprintf(result[j++], "%u",
  			h->ae_algo->ops->get_global_queue_id(h, i));
  		sprintf(result[j++], "%d",
  			priv->ring[i].tqp_vector->vector_irq);
  		hns3_dbg_fill_content(content, sizeof(content), queue_map_items,
  				      (const char **)result,
  				      ARRAY_SIZE(queue_map_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	return 0;
  }
  
  static const struct hns3_dbg_item rx_bd_info_items[] = {
  	{ "BD_IDX", 3 },
  	{ "L234_INFO", 2 },
  	{ "PKT_LEN", 3 },
  	{ "SIZE", 4 },
  	{ "RSS_HASH", 4 },
  	{ "FD_ID", 2 },
  	{ "VLAN_TAG", 2 },
  	{ "O_DM_VLAN_ID_FB", 2 },
  	{ "OT_VLAN_TAG", 2 },
  	{ "BD_BASE_INFO", 2 },
  	{ "PTYPE", 2 },
  	{ "HW_CSUM", 2 },
  };
  
  static void hns3_dump_rx_bd_info(struct hns3_nic_priv *priv,
  				 struct hns3_desc *desc, char **result, int idx)
  {
  	unsigned int j = 0;
  
  	sprintf(result[j++], "%5d", idx);
  	sprintf(result[j++], "%#x", le32_to_cpu(desc->rx.l234_info));
  	sprintf(result[j++], "%7u", le16_to_cpu(desc->rx.pkt_len));
  	sprintf(result[j++], "%4u", le16_to_cpu(desc->rx.size));
  	sprintf(result[j++], "%#x", le32_to_cpu(desc->rx.rss_hash));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->rx.fd_id));
  	sprintf(result[j++], "%8u", le16_to_cpu(desc->rx.vlan_tag));
  	sprintf(result[j++], "%15u", le16_to_cpu(desc->rx.o_dm_vlan_id_fb));
  	sprintf(result[j++], "%11u", le16_to_cpu(desc->rx.ot_vlan_tag));
  	sprintf(result[j++], "%#x", le32_to_cpu(desc->rx.bd_base_info));
  	if (test_bit(HNS3_NIC_STATE_RXD_ADV_LAYOUT_ENABLE, &priv->state)) {
  		u32 ol_info = le32_to_cpu(desc->rx.ol_info);
  
  		sprintf(result[j++], "%5lu", hnae3_get_field(ol_info,
  							     HNS3_RXD_PTYPE_M,
  							     HNS3_RXD_PTYPE_S));
  		sprintf(result[j++], "%7u", le16_to_cpu(desc->csum));
  	} else {
  		sprintf(result[j++], "NA");
  		sprintf(result[j++], "NA");
  	}
  }
  
  static int hns3_dbg_rx_bd_info(struct hns3_dbg_data *d, char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(rx_bd_info_items)][HNS3_DBG_DATA_STR_LEN];
  	struct hns3_nic_priv *priv = d->handle->priv;
  	char *result[ARRAY_SIZE(rx_bd_info_items)];
  	char content[HNS3_DBG_INFO_LEN];
  	struct hns3_enet_ring *ring;
  	struct hns3_desc *desc;
  	unsigned int i;
  	int pos = 0;
  
  	if (d->qid >= d->handle->kinfo.num_tqps) {
  		dev_err(&d->handle->pdev->dev,
  			"queue%u is not in use\n", d->qid);
  		return -EINVAL;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(rx_bd_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	pos += scnprintf(buf + pos, len - pos,
  			  "Queue %u rx bd info:\n", d->qid);
  	hns3_dbg_fill_content(content, sizeof(content), rx_bd_info_items,
  			      NULL, ARRAY_SIZE(rx_bd_info_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  
  	ring = &priv->ring[d->qid + d->handle->kinfo.num_tqps];
  	for (i = 0; i < ring->desc_num; i++) {
  		desc = &ring->desc[i];
  
  		hns3_dump_rx_bd_info(priv, desc, result, i);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      rx_bd_info_items, (const char **)result,
  				      ARRAY_SIZE(rx_bd_info_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	return 0;
  }
  
  static const struct hns3_dbg_item tx_bd_info_items[] = {
  	{ "BD_IDX", 2 },
  	{ "ADDRESS", 13 },
  	{ "VLAN_TAG", 2 },
  	{ "SIZE", 2 },
  	{ "T_CS_VLAN_TSO", 2 },
  	{ "OT_VLAN_TAG", 3 },
  	{ "TV", 5 },
  	{ "OLT_VLAN_LEN", 2 },
  	{ "PAYLEN_OL4CS", 2 },
  	{ "BD_FE_SC_VLD", 2 },
  	{ "MSS_HW_CSUM", 0 },
  };
  
  static void hns3_dump_tx_bd_info(struct hns3_nic_priv *priv,
  				 struct hns3_desc *desc, char **result, int idx)
  {
  	unsigned int j = 0;
  
  	sprintf(result[j++], "%6d", idx);
  	sprintf(result[j++], "%#llx", le64_to_cpu(desc->addr));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->tx.vlan_tag));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->tx.send_size));
  	sprintf(result[j++], "%#x",
  		le32_to_cpu(desc->tx.type_cs_vlan_tso_len));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->tx.outer_vlan_tag));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->tx.tv));
  	sprintf(result[j++], "%10u",
  		le32_to_cpu(desc->tx.ol_type_vlan_len_msec));
  	sprintf(result[j++], "%#x", le32_to_cpu(desc->tx.paylen_ol4cs));
  	sprintf(result[j++], "%#x", le16_to_cpu(desc->tx.bdtp_fe_sc_vld_ra_ri));
  	sprintf(result[j++], "%5u", le16_to_cpu(desc->tx.mss_hw_csum));
  }
  
  static int hns3_dbg_tx_bd_info(struct hns3_dbg_data *d, char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(tx_bd_info_items)][HNS3_DBG_DATA_STR_LEN];
  	struct hns3_nic_priv *priv = d->handle->priv;
  	char *result[ARRAY_SIZE(tx_bd_info_items)];
  	char content[HNS3_DBG_INFO_LEN];
  	struct hns3_enet_ring *ring;
  	struct hns3_desc *desc;
  	unsigned int i;
  	int pos = 0;
  
  	if (d->qid >= d->handle->kinfo.num_tqps) {
  		dev_err(&d->handle->pdev->dev,
  			"queue%u is not in use\n", d->qid);
  		return -EINVAL;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(tx_bd_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	pos += scnprintf(buf + pos, len - pos,
  			  "Queue %u tx bd info:\n", d->qid);
  	hns3_dbg_fill_content(content, sizeof(content), tx_bd_info_items,
  			      NULL, ARRAY_SIZE(tx_bd_info_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  
  	ring = &priv->ring[d->qid];
  	for (i = 0; i < ring->desc_num; i++) {
  		desc = &ring->desc[i];
  
  		hns3_dump_tx_bd_info(priv, desc, result, i);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      tx_bd_info_items, (const char **)result,
  				      ARRAY_SIZE(tx_bd_info_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	return 0;
  }
  
  static void
  hns3_dbg_dev_caps(struct hnae3_handle *h, char *buf, int len, int *pos)
  {
  	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(h->pdev);
  	const char * const str[] = {"no", "yes"};
  	unsigned long *caps = ae_dev->caps;
  	u32 i, state;
  
  	*pos += scnprintf(buf + *pos, len - *pos, "dev capability:\n");
  
  	for (i = 0; i < ARRAY_SIZE(hns3_dbg_cap); i++) {
  		state = test_bit(hns3_dbg_cap[i].cap_bit, caps);
  		*pos += scnprintf(buf + *pos, len - *pos, "%s: %s\n",
  				  hns3_dbg_cap[i].name, str[state]);
  	}
  
  	*pos += scnprintf(buf + *pos, len - *pos, "\n");
  }
  
  static void
  hns3_dbg_dev_specs(struct hnae3_handle *h, char *buf, int len, int *pos)
  {
  	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(h->pdev);
  	struct hnae3_dev_specs *dev_specs = &ae_dev->dev_specs;
  	struct hnae3_knic_private_info *kinfo = &h->kinfo;
  
  	*pos += scnprintf(buf + *pos, len - *pos, "dev_spec:\n");
  	*pos += scnprintf(buf + *pos, len - *pos, "MAC entry num: %u\n",
  			  dev_specs->mac_entry_num);
  	*pos += scnprintf(buf + *pos, len - *pos, "MNG entry num: %u\n",
  			  dev_specs->mng_entry_num);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAX non tso bd num: %u\n",
  			  dev_specs->max_non_tso_bd_num);
  	*pos += scnprintf(buf + *pos, len - *pos, "RSS ind tbl size: %u\n",
  			  dev_specs->rss_ind_tbl_size);
  	*pos += scnprintf(buf + *pos, len - *pos, "RSS key size: %u\n",
  			  dev_specs->rss_key_size);
  	*pos += scnprintf(buf + *pos, len - *pos, "RSS size: %u\n",
  			  kinfo->rss_size);
  	*pos += scnprintf(buf + *pos, len - *pos, "Allocated RSS size: %u\n",
  			  kinfo->req_rss_size);
  	*pos += scnprintf(buf + *pos, len - *pos,
  			  "Task queue pairs numbers: %u\n",
  			  kinfo->num_tqps);
  	*pos += scnprintf(buf + *pos, len - *pos, "RX buffer length: %u\n",
  			  kinfo->rx_buf_len);
  	*pos += scnprintf(buf + *pos, len - *pos, "Desc num per TX queue: %u\n",
  			  kinfo->num_tx_desc);
  	*pos += scnprintf(buf + *pos, len - *pos, "Desc num per RX queue: %u\n",
  			  kinfo->num_rx_desc);
  	*pos += scnprintf(buf + *pos, len - *pos,
  			  "Total number of enabled TCs: %u\n",
  			  kinfo->tc_info.num_tc);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAX INT QL: %u\n",
  			  dev_specs->int_ql_max);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAX INT GL: %u\n",
  			  dev_specs->max_int_gl);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAX TM RATE: %u\n",
  			  dev_specs->max_tm_rate);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAX QSET number: %u\n",
  			  dev_specs->max_qset_num);
  	*pos += scnprintf(buf + *pos, len - *pos, "umv size: %u\n",
  			  dev_specs->umv_size);
  	*pos += scnprintf(buf + *pos, len - *pos, "mc mac size: %u\n",
  			  dev_specs->mc_mac_size);
  	*pos += scnprintf(buf + *pos, len - *pos, "MAC statistics number: %u\n",
  			  dev_specs->mac_stats_num);
  }
  
  static int hns3_dbg_dev_info(struct hnae3_handle *h, char *buf, int len)
  {
  	int pos = 0;
  
  	hns3_dbg_dev_caps(h, buf, len, &pos);
  
  	hns3_dbg_dev_specs(h, buf, len, &pos);
  
  	return 0;
  }
  
  static const struct hns3_dbg_item page_pool_info_items[] = {
  	{ "QUEUE_ID", 2 },
  	{ "ALLOCATE_CNT", 2 },
  	{ "FREE_CNT", 6 },
  	{ "POOL_SIZE(PAGE_NUM)", 2 },
  	{ "ORDER", 2 },
  	{ "NUMA_ID", 2 },
  	{ "MAX_LEN", 2 },
  };
  
  static void hns3_dump_page_pool_info(struct hns3_enet_ring *ring,
  				     char **result, u32 index)
  {
  	u32 j = 0;
  
  	sprintf(result[j++], "%u", index);
  	sprintf(result[j++], "%u",
  		READ_ONCE(ring->page_pool->pages_state_hold_cnt));
  	sprintf(result[j++], "%d",
  		atomic_read(&ring->page_pool->pages_state_release_cnt));
  	sprintf(result[j++], "%u", ring->page_pool->p.pool_size);
  	sprintf(result[j++], "%u", ring->page_pool->p.order);
  	sprintf(result[j++], "%d", ring->page_pool->p.nid);
  	sprintf(result[j++], "%uK", ring->page_pool->p.max_len / 1024);
  }
  
  static int
  hns3_dbg_page_pool_info(struct hnae3_handle *h, char *buf, int len)
  {
  	char data_str[ARRAY_SIZE(page_pool_info_items)][HNS3_DBG_DATA_STR_LEN];
  	char *result[ARRAY_SIZE(page_pool_info_items)];
  	struct hns3_nic_priv *priv = h->priv;
  	char content[HNS3_DBG_INFO_LEN];
  	struct hns3_enet_ring *ring;
  	int pos = 0;
  	u32 i;
  
  	if (!priv->ring) {
  		dev_err(&h->pdev->dev, "priv->ring is NULL\n");
  		return -EFAULT;
  	}
  
  	if (!priv->ring[h->kinfo.num_tqps].page_pool) {
  		dev_err(&h->pdev->dev, "page pool is not initialized\n");
  		return -EFAULT;
  	}
  
  	for (i = 0; i < ARRAY_SIZE(page_pool_info_items); i++)
  		result[i] = &data_str[i][0];
  
  	hns3_dbg_fill_content(content, sizeof(content), page_pool_info_items,
  			      NULL, ARRAY_SIZE(page_pool_info_items));
  	pos += scnprintf(buf + pos, len - pos, "%s", content);
  	for (i = 0; i < h->kinfo.num_tqps; i++) {
  		if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
  		    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))
  			return -EPERM;
  		ring = &priv->ring[(u32)(i + h->kinfo.num_tqps)];
  		hns3_dump_page_pool_info(ring, result, i);
  		hns3_dbg_fill_content(content, sizeof(content),
  				      page_pool_info_items,
  				      (const char **)result,
  				      ARRAY_SIZE(page_pool_info_items));
  		pos += scnprintf(buf + pos, len - pos, "%s", content);
  	}
  
  	return 0;
  }
  
  static int hns3_dbg_get_cmd_index(struct hns3_dbg_data *dbg_data, u32 *index)
  {
  	u32 i;
  
  	for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd); i++) {
  		if (hns3_dbg_cmd[i].cmd == dbg_data->cmd) {
  			*index = i;
  			return 0;
  		}
  	}
  
  	dev_err(&dbg_data->handle->pdev->dev, "unknown command(%d)\n",
  		dbg_data->cmd);
  	return -EINVAL;
  }
  
  static const struct hns3_dbg_func hns3_dbg_cmd_func[] = {
  	{
  		.cmd = HNAE3_DBG_CMD_QUEUE_MAP,
  		.dbg_dump = hns3_dbg_queue_map,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_DEV_INFO,
  		.dbg_dump = hns3_dbg_dev_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_TX_BD,
  		.dbg_dump_bd = hns3_dbg_tx_bd_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_RX_BD,
  		.dbg_dump_bd = hns3_dbg_rx_bd_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_RX_QUEUE_INFO,
  		.dbg_dump = hns3_dbg_rx_queue_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_TX_QUEUE_INFO,
  		.dbg_dump = hns3_dbg_tx_queue_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_PAGE_POOL_INFO,
  		.dbg_dump = hns3_dbg_page_pool_info,
  	},
  	{
  		.cmd = HNAE3_DBG_CMD_COAL_INFO,
  		.dbg_dump = hns3_dbg_coal_info,
  	},
  };
  
  static int hns3_dbg_read_cmd(struct hns3_dbg_data *dbg_data,
  			     enum hnae3_dbg_cmd cmd, char *buf, int len)
  {
  	const struct hnae3_ae_ops *ops = dbg_data->handle->ae_algo->ops;
  	const struct hns3_dbg_func *cmd_func;
  	u32 i;
  
  	for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd_func); i++) {
  		if (cmd == hns3_dbg_cmd_func[i].cmd) {
  			cmd_func = &hns3_dbg_cmd_func[i];
  			if (cmd_func->dbg_dump)
  				return cmd_func->dbg_dump(dbg_data->handle, buf,
  							  len);
  			else
  				return cmd_func->dbg_dump_bd(dbg_data, buf,
  							     len);
  		}
  	}
  
  	if (!ops->dbg_read_cmd)
  		return -EOPNOTSUPP;
  
  	return ops->dbg_read_cmd(dbg_data->handle, cmd, buf, len);
  }
  
  static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
  			     size_t count, loff_t *ppos)
  {
  	struct hns3_dbg_data *dbg_data = filp->private_data;
  	struct hnae3_handle *handle = dbg_data->handle;
  	struct hns3_nic_priv *priv = handle->priv;
  	ssize_t size = 0;
  	char **save_buf;
  	char *read_buf;
  	u32 index;
  	int ret;
  
  	ret = hns3_dbg_get_cmd_index(dbg_data, &index);
  	if (ret)
  		return ret;
  
  	mutex_lock(&handle->dbgfs_lock);
  	save_buf = &handle->dbgfs_buf[index];
  
  	if (!test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||
  	    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state)) {
  		ret = -EBUSY;
  		goto out;
  	}
  
  	if (*save_buf) {
  		read_buf = *save_buf;
  	} else {
  		read_buf = kvzalloc(hns3_dbg_cmd[index].buf_len, GFP_KERNEL);
  		if (!read_buf) {
  			ret = -ENOMEM;
  			goto out;
  		}
  
  		/* save the buffer addr until the last read operation */
  		*save_buf = read_buf;
  
  		/* get data ready for the first time to read */
  		ret = hns3_dbg_read_cmd(dbg_data, hns3_dbg_cmd[index].cmd,
  					read_buf, hns3_dbg_cmd[index].buf_len);
  		if (ret)
  			goto out;
  	}
  
  	size = simple_read_from_buffer(buffer, count, ppos, read_buf,
  				       strlen(read_buf));
  	if (size > 0) {
  		mutex_unlock(&handle->dbgfs_lock);
  		return size;
  	}
  
  out:
  	/* free the buffer for the last read operation */
  	if (*save_buf) {
  		kvfree(*save_buf);
  		*save_buf = NULL;
  	}
  
  	mutex_unlock(&handle->dbgfs_lock);
  	return ret;
  }
  
  static const struct file_operations hns3_dbg_fops = {
  	.owner = THIS_MODULE,
  	.open  = simple_open,
  	.read  = hns3_dbg_read,
  };
  
  static int hns3_dbg_bd_file_init(struct hnae3_handle *handle, u32 cmd)
  {
  	struct dentry *entry_dir;
  	struct hns3_dbg_data *data;
  	u16 max_queue_num;
  	unsigned int i;
  
  	entry_dir = hns3_dbg_dentry[hns3_dbg_cmd[cmd].dentry].dentry;
  	max_queue_num = hns3_get_max_available_channels(handle);
  	data = devm_kzalloc(&handle->pdev->dev, max_queue_num * sizeof(*data),
  			    GFP_KERNEL);
  	if (!data)
  		return -ENOMEM;
  
  	for (i = 0; i < max_queue_num; i++) {
  		char name[HNS3_DBG_FILE_NAME_LEN];
  
  		data[i].handle = handle;
  		data[i].cmd = hns3_dbg_cmd[cmd].cmd;
  		data[i].qid = i;
  		sprintf(name, "%s%u", hns3_dbg_cmd[cmd].name, i);
  		debugfs_create_file(name, 0400, entry_dir, &data[i],
  				    &hns3_dbg_fops);
  	}
  
  	return 0;
  }
  
  static int
  hns3_dbg_common_file_init(struct hnae3_handle *handle, u32 cmd)
  {
  	struct hns3_dbg_data *data;
  	struct dentry *entry_dir;
  
  	data = devm_kzalloc(&handle->pdev->dev, sizeof(*data), GFP_KERNEL);
  	if (!data)
  		return -ENOMEM;
  
  	data->handle = handle;
  	data->cmd = hns3_dbg_cmd[cmd].cmd;
  	entry_dir = hns3_dbg_dentry[hns3_dbg_cmd[cmd].dentry].dentry;
  	debugfs_create_file(hns3_dbg_cmd[cmd].name, 0400, entry_dir,
  			    data, &hns3_dbg_fops);
  
  	return 0;
  }
  
  int hns3_dbg_init(struct hnae3_handle *handle)
  {
  	struct hnae3_ae_dev *ae_dev = pci_get_drvdata(handle->pdev);
  	const char *name = pci_name(handle->pdev);
  	int ret;
  	u32 i;
  
  	handle->dbgfs_buf = devm_kcalloc(&handle->pdev->dev,
  					 ARRAY_SIZE(hns3_dbg_cmd),
  					 sizeof(*handle->dbgfs_buf),
  					 GFP_KERNEL);
  	if (!handle->dbgfs_buf)
  		return -ENOMEM;
  
  	hns3_dbg_dentry[HNS3_DBG_DENTRY_COMMON].dentry =
  				debugfs_create_dir(name, hns3_dbgfs_root);
  	handle->hnae3_dbgfs = hns3_dbg_dentry[HNS3_DBG_DENTRY_COMMON].dentry;
  
  	for (i = 0; i < HNS3_DBG_DENTRY_COMMON; i++)
  		hns3_dbg_dentry[i].dentry =
  			debugfs_create_dir(hns3_dbg_dentry[i].name,
  					   handle->hnae3_dbgfs);
  
  	mutex_init(&handle->dbgfs_lock);
  
  	for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd); i++) {
  		if ((hns3_dbg_cmd[i].cmd == HNAE3_DBG_CMD_TM_NODES &&
  		     ae_dev->dev_version <= HNAE3_DEVICE_VERSION_V2) ||
  		    (hns3_dbg_cmd[i].cmd == HNAE3_DBG_CMD_PTP_INFO &&
  		     !test_bit(HNAE3_DEV_SUPPORT_PTP_B, ae_dev->caps)))
  			continue;
  
  		if (!hns3_dbg_cmd[i].init) {
  			dev_err(&handle->pdev->dev,
  				"cmd %s lack of init func\n",
  				hns3_dbg_cmd[i].name);
  			ret = -EINVAL;
  			goto out;
  		}
  
  		ret = hns3_dbg_cmd[i].init(handle, i);
  		if (ret) {
  			dev_err(&handle->pdev->dev, "failed to init cmd %s\n",
  				hns3_dbg_cmd[i].name);
  			goto out;
  		}
  	}
  
  	return 0;
  
  out:
  	mutex_destroy(&handle->dbgfs_lock);
  	debugfs_remove_recursive(handle->hnae3_dbgfs);
  	handle->hnae3_dbgfs = NULL;
  	return ret;
  }
  
  void hns3_dbg_uninit(struct hnae3_handle *handle)
  {
  	u32 i;
  
  	for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd); i++)
  		if (handle->dbgfs_buf[i]) {
  			kvfree(handle->dbgfs_buf[i]);
  			handle->dbgfs_buf[i] = NULL;
  		}
  
  	mutex_destroy(&handle->dbgfs_lock);
  	debugfs_remove_recursive(handle->hnae3_dbgfs);
  	handle->hnae3_dbgfs = NULL;
  }
  
  void hns3_dbg_register_debugfs(const char *debugfs_dir_name)
  {
  	hns3_dbgfs_root = debugfs_create_dir(debugfs_dir_name, NULL);
  }
  
  void hns3_dbg_unregister_debugfs(void)
  {
  	debugfs_remove_recursive(hns3_dbgfs_root);
  	hns3_dbgfs_root = NULL;
  }
  