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Commit 57ceee2c authored by liuzhongzhu's avatar liuzhongzhu Committed by David S. Miller
Browse files

net: hns3: Add "queue info" query function 



Query the queue information of the current NIC
such as BD size, queue header and tail pointer.

This  patch adds support for debugfs command:
echo queue info 1 > cmd

it can  print queue config information...

root@(none)# echo queue info 1 > cmd
hns3 0000:7d:00.0: queue info
hns3 0000:7d:00.0: RX(1) BASE ADD: 0x00000000ffb58000
hns3 0000:7d:00.0: RX(1) RING BD NUM: 127
hns3 0000:7d:00.0: RX(1) RING BD LEN: 2
hns3 0000:7d:00.0: RX(1) RING TAIL: 120
hns3 0000:7d:00.0: RX(1) RING HEAD: 0
hns3 0000:7d:00.0: RX(1) RING FBDNUM: 0
hns3 0000:7d:00.0: RX(1) RING PKTNUM: 0
hns3 0000:7d:00.0: TX(1) BASE ADD: 0x00000000fffd8000
hns3 0000:7d:00.0: TX(1) RING BD NUM: 127
hns3 0000:7d:00.0: TX(1) RING TC: 0
hns3 0000:7d:00.0: TX(1) RING TAIL: 2
hns3 0000:7d:00.0: TX(1) RING HEAD: 2
hns3 0000:7d:00.0: TX(1) RING FBDNUM: 0
hns3 0000:7d:00.0: TX(1) RING OFFSET: 0
hns3 0000:7d:00.0: TX(1) RING PKTNUM: 0
root@(none)#

Signed-off-by: default avatarliuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: default avatarSalil Mehta <salil.mehta@huawei.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b2292360

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

+122 −0
Original line number Diff line number Diff line
@@ -11,6 +11,120 @@ 


static struct dentry *hns3_dbgfs_root;



static int hns3_dbg_queue_info(struct hnae3_handle *h, char *cmd_buf)

{

	struct hns3_nic_priv *priv = h->priv;

	struct hns3_nic_ring_data *ring_data;

	struct hns3_enet_ring *ring;

	u32 base_add_l, base_add_h;

	u32 queue_num, queue_max;

	u32 value, i = 0;

	int cnt;



	if (!priv->ring_data) {

		dev_err(&h->pdev->dev, "ring_data is NULL\n");

		return -EFAULT;

	}



	queue_max = h->kinfo.num_tqps;

	cnt = kstrtouint(&cmd_buf[11], 0, &queue_num);

	if (cnt)

		queue_num = 0;

	else

		queue_max = queue_num + 1;



	dev_info(&h->pdev->dev, "queue info\n");



	if (queue_num >= h->kinfo.num_tqps) {

		dev_err(&h->pdev->dev,

			"Queue number(%u) is out of range(%u)\n", queue_num,

			h->kinfo.num_tqps - 1);

		return -EINVAL;

	}



	ring_data = priv->ring_data;

	for (i = queue_num; i < queue_max; 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 = ring_data[i + h->kinfo.num_tqps].ring;

		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);

		dev_info(&h->pdev->dev, "RX(%d) BASE ADD: 0x%08x%08x\n", i,

			 base_add_h, base_add_l);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_BD_NUM_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING BD NUM: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_BD_LEN_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING BD LEN: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_TAIL_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING TAIL: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_HEAD_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING HEAD: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_FBDNUM_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING FBDNUM: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_RX_RING_PKTNUM_RECORD_REG);

		dev_info(&h->pdev->dev, "RX(%d) RING PKTNUM: %u\n", i, value);



		ring = ring_data[i].ring;

		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);

		dev_info(&h->pdev->dev, "TX(%d) BASE ADD: 0x%08x%08x\n", i,

			 base_add_h, base_add_l);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_BD_NUM_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING BD NUM: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_TC_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING TC: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_TAIL_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING TAIL: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_HEAD_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING HEAD: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_FBDNUM_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING FBDNUM: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_OFFSET_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING OFFSET: %u\n", i, value);



		value = readl_relaxed(ring->tqp->io_base +

				      HNS3_RING_TX_RING_PKTNUM_RECORD_REG);

		dev_info(&h->pdev->dev, "TX(%d) RING PKTNUM: %u\n\n", i,

			 value);

	}



	return 0;

}



static void hns3_dbg_help(struct hnae3_handle *h)

{

	dev_info(&h->pdev->dev, "available commands\n");
@@ -51,6 +165,7 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 
				  size_t count, loff_t *ppos)

{

	struct hnae3_handle *handle = filp->private_data;

	struct hns3_nic_priv *priv  = handle->priv;

	char *cmd_buf, *cmd_buf_tmp;

	int uncopied_bytes;

	int ret = 0;
@@ -58,6 +173,11 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 
	if (*ppos != 0)

		return 0;



	/* Judge if the instance is being reset. */

	if (test_bit(HNS3_NIC_STATE_INITED, &priv->state) ||

	    test_bit(HNS3_NIC_STATE_RESETTING, &priv->state))

		return 0;



	cmd_buf = kzalloc(count + 1, GFP_KERNEL);

	if (!cmd_buf)

		return count;
@@ -78,6 +198,8 @@ static ssize_t hns3_dbg_cmd_write(struct file *filp, const char __user *buffer, 


	if (strncmp(cmd_buf, "help", 4) == 0)

		hns3_dbg_help(handle);

	else if (strncmp(cmd_buf, "queue info", 10) == 0)

		ret = hns3_dbg_queue_info(handle, cmd_buf);



	if (ret)

		hns3_dbg_help(handle);