Skip to content

Commit

Permalink
net: hns3: Add "queue info" query function
Browse files Browse the repository at this point in the history 
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: liuzhongzhu <liuzhongzhu@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
  • Loading branch information
liuzhongzhu authored and David S. Miller committed Nov 24, 2018
1 parent b229236 commit 57ceee2
Showing 1 changed file with 122 additions and 0 deletions.
122 changes: 122 additions & 0 deletions drivers/net/ethernet/hisilicon/hns3/hns3_debugfs.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -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");
Expand Down Expand Up @@ -51,13 +165,19 @@ 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;

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;
Expand All @@ -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);
Expand Down

0 comments on commit 57ceee2

Please sign in to comment.