net: hns3: Add "dcb register" status information query function

This patch prints dcb register status  information by module.

debugfs command:
root@(none)# echo dump reg dcb > cmd
 roce_qset_mask: 0x0
 nic_qs_mask: 0x0
 qs_shaping_pass: 0x0
 qs_bp_sts: 0x0
 pri_mask: 0x0
 pri_cshaping_pass: 0x0
 pri_pshaping_pass: 0x0
root@(none)#
Signed-off-by: Nliuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: NSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

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

@@ -226,6 +226,13 @@ static void hns3_dbg_help(struct hnae3_handle *h)
 		" [rtc] [ppp] [rcb] [tqp <q_num>]]\n",
 		HNS3_DBG_BUF_LEN - strlen(printf_buf) - 1);
 	dev_info(&h->pdev->dev, "%s", printf_buf);
+
+	memset(printf_buf, 0, HNS3_DBG_BUF_LEN);
+	strncat(printf_buf, "dump reg dcb [port_id] [pri_id] [pg_id]",
+		HNS3_DBG_BUF_LEN - 1);
+	strncat(printf_buf + strlen(printf_buf), " [rq_id] [nq_id] [qset_id]\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,

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

@@ -140,6 +140,15 @@ enum hclge_opcode_type {
 	HCLGE_OPC_TM_QS_SCH_MODE_CFG    = 0x0814,
 	HCLGE_OPC_TM_BP_TO_QSET_MAPPING = 0x0815,
 	HCLGE_OPC_ETS_TC_WEIGHT		= 0x0843,
+	HCLGE_OPC_QSET_DFX_STS		= 0x0844,
+	HCLGE_OPC_PRI_DFX_STS		= 0x0845,
+	HCLGE_OPC_PG_DFX_STS		= 0x0846,
+	HCLGE_OPC_PORT_DFX_STS		= 0x0847,
+	HCLGE_OPC_SCH_NQ_CNT		= 0x0848,
+	HCLGE_OPC_SCH_RQ_CNT		= 0x0849,
+	HCLGE_OPC_TM_INTERNAL_STS	= 0x0850,
+	HCLGE_OPC_TM_INTERNAL_CNT	= 0x0851,
+	HCLGE_OPC_TM_INTERNAL_STS_1	= 0x0852,
 
 	/* Packet buffer allocate commands */
 	HCLGE_OPC_TX_BUFF_ALLOC		= 0x0901,

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

@@ -107,6 +107,106 @@ static void hclge_dbg_dump_reg_common(struct hclge_dev *hdev,
 	kfree(desc_src);
 }
 
+static void hclge_dbg_dump_dcb(struct hclge_dev *hdev, char *cmd_buf)
+{
+	struct device *dev = &hdev->pdev->dev;
+	struct hclge_dbg_bitmap_cmd *bitmap;
+	int rq_id, pri_id, qset_id;
+	int port_id, nq_id, pg_id;
+	struct hclge_desc desc[2];
+
+	int cnt, ret;
+
+	cnt = sscanf(cmd_buf, "%i %i %i %i %i %i",
+		     &port_id, &pri_id, &pg_id, &rq_id, &nq_id, &qset_id);
+	if (cnt != 6) {
+		dev_err(&hdev->pdev->dev,
+			"dump dcb: bad command parameter, cnt=%d\n", cnt);
+		return;
+	}
+
+	ret = hclge_dbg_cmd_send(hdev, desc, qset_id, 1,
+				 HCLGE_OPC_QSET_DFX_STS);
+	if (ret)
+		return;
+
+	bitmap = (struct hclge_dbg_bitmap_cmd *)&desc[0].data[1];
+	dev_info(dev, "roce_qset_mask: 0x%x\n", bitmap->bit0);
+	dev_info(dev, "nic_qs_mask: 0x%x\n", bitmap->bit1);
+	dev_info(dev, "qs_shaping_pass: 0x%x\n", bitmap->bit2);
+	dev_info(dev, "qs_bp_sts: 0x%x\n", bitmap->bit3);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, pri_id, 1, HCLGE_OPC_PRI_DFX_STS);
+	if (ret)
+		return;
+
+	bitmap = (struct hclge_dbg_bitmap_cmd *)&desc[0].data[1];
+	dev_info(dev, "pri_mask: 0x%x\n", bitmap->bit0);
+	dev_info(dev, "pri_cshaping_pass: 0x%x\n", bitmap->bit1);
+	dev_info(dev, "pri_pshaping_pass: 0x%x\n", bitmap->bit2);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, pg_id, 1, HCLGE_OPC_PG_DFX_STS);
+	if (ret)
+		return;
+
+	bitmap = (struct hclge_dbg_bitmap_cmd *)&desc[0].data[1];
+	dev_info(dev, "pg_mask: 0x%x\n", bitmap->bit0);
+	dev_info(dev, "pg_cshaping_pass: 0x%x\n", bitmap->bit1);
+	dev_info(dev, "pg_pshaping_pass: 0x%x\n", bitmap->bit2);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, port_id, 1,
+				 HCLGE_OPC_PORT_DFX_STS);
+	if (ret)
+		return;
+
+	bitmap = (struct hclge_dbg_bitmap_cmd *)&desc[0].data[1];
+	dev_info(dev, "port_mask: 0x%x\n", bitmap->bit0);
+	dev_info(dev, "port_shaping_pass: 0x%x\n", bitmap->bit1);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, nq_id, 1, HCLGE_OPC_SCH_NQ_CNT);
+	if (ret)
+		return;
+
+	dev_info(dev, "sch_nq_cnt: 0x%x\n", desc[0].data[1]);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, nq_id, 1, HCLGE_OPC_SCH_RQ_CNT);
+	if (ret)
+		return;
+
+	dev_info(dev, "sch_rq_cnt: 0x%x\n", desc[0].data[1]);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, 0, 2, HCLGE_OPC_TM_INTERNAL_STS);
+	if (ret)
+		return;
+
+	dev_info(dev, "pri_bp: 0x%x\n", desc[0].data[1]);
+	dev_info(dev, "fifo_dfx_info: 0x%x\n", desc[0].data[2]);
+	dev_info(dev, "sch_roce_fifo_afull_gap: 0x%x\n", desc[0].data[3]);
+	dev_info(dev, "tx_private_waterline: 0x%x\n", desc[0].data[4]);
+	dev_info(dev, "tm_bypass_en: 0x%x\n", desc[0].data[5]);
+	dev_info(dev, "SSU_TM_BYPASS_EN: 0x%x\n", desc[1].data[0]);
+	dev_info(dev, "SSU_RESERVE_CFG: 0x%x\n", desc[1].data[1]);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, port_id, 1,
+				 HCLGE_OPC_TM_INTERNAL_CNT);
+	if (ret)
+		return;
+
+	dev_info(dev, "SCH_NIC_NUM: 0x%x\n", desc[0].data[1]);
+	dev_info(dev, "SCH_ROCE_NUM: 0x%x\n", desc[0].data[2]);
+
+	ret = hclge_dbg_cmd_send(hdev, desc, port_id, 1,
+				 HCLGE_OPC_TM_INTERNAL_STS_1);
+	if (ret)
+		return;
+
+	dev_info(dev, "TC_MAP_SEL: 0x%x\n", desc[0].data[1]);
+	dev_info(dev, "IGU_PFC_PRI_EN: 0x%x\n", desc[0].data[2]);
+	dev_info(dev, "MAC_PFC_PRI_EN: 0x%x\n", desc[0].data[3]);
+	dev_info(dev, "IGU_PRI_MAP_TC_CFG: 0x%x\n", desc[0].data[4]);
+	dev_info(dev, "IGU_TX_PRI_MAP_TC_CFG: 0x%x\n", desc[0].data[5]);
+}
+
 static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, char *cmd_buf)
 {
 	int msg_num;
@@ -195,6 +295,8 @@ static void hclge_dbg_dump_reg_cmd(struct hclge_dev *hdev, char *cmd_buf)
 					  &cmd_buf[13], msg_num,
 					  HCLGE_DBG_DFX_TQP_OFFSET,
 					  HCLGE_OPC_DFX_TQP_REG);
+	} else if (strncmp(&cmd_buf[9], "dcb", 3) == 0) {
+		hclge_dbg_dump_dcb(hdev, &cmd_buf[13]);
 	} else {
 		dev_info(&hdev->pdev->dev, "unknown command\n");
 		return;

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

@@ -47,6 +47,22 @@ struct hclge_qos_pri_map_cmd {
 	   rev	    : 4;
 };
 
+struct hclge_dbg_bitmap_cmd {
+	union {
+		u8 bitmap;
+		struct {
+			u8 bit0 : 1,
+			   bit1 : 1,
+			   bit2 : 1,
+			   bit3 : 1,
+			   bit4 : 1,
+			   bit5 : 1,
+			   bit6 : 1,
+			   bit7 : 1;
+		};
+	};
+};
+
 struct hclge_dbg_dfx_message {
 	int flag;
 	char message[60];