#include <linux/device.h>
#include "hnae3.h"
+#include "hns3_debugfs.h"
#include "hns3_enet.h"
-#define HNS3_DBG_READ_LEN 65536
-#define HNS3_DBG_WRITE_LEN 1024
-
static struct dentry *hns3_dbgfs_root;
+static struct hns3_dbg_dentry_info hns3_dbg_dentry[] = {
+ {
+ .name = "tm"
+ },
+ /* keep common at the bottom and add new directory above */
+ {
+ .name = "common"
+ },
+};
+
+static int hns3_dbg_common_file_init(struct hnae3_handle *handle,
+ unsigned int 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,
+ },
+};
+
static int hns3_dbg_queue_info(struct hnae3_handle *h,
const char *cmd_buf)
{
return count;
}
+static int hns3_dbg_get_cmd_index(struct hnae3_handle *handle,
+ const unsigned char *name, u32 *index)
+{
+ u32 i;
+
+ for (i = 0; i < ARRAY_SIZE(hns3_dbg_cmd); i++) {
+ if (!strncmp(name, hns3_dbg_cmd[i].name,
+ strlen(hns3_dbg_cmd[i].name))) {
+ *index = i;
+ return 0;
+ }
+ }
+
+ dev_err(&handle->pdev->dev, "unknown command(%s)\n", name);
+ return -EINVAL;
+}
+
+static int hns3_dbg_read_cmd(struct hnae3_handle *handle,
+ enum hnae3_dbg_cmd cmd, char *buf, int len)
+{
+ const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
+
+ if (!ops->dbg_read_cmd)
+ return -EOPNOTSUPP;
+
+ return ops->dbg_read_cmd(handle, cmd, buf, len);
+}
+
static ssize_t hns3_dbg_read(struct file *filp, char __user *buffer,
size_t count, loff_t *ppos)
{
struct hnae3_handle *handle = filp->private_data;
- const struct hnae3_ae_ops *ops = handle->ae_algo->ops;
struct hns3_nic_priv *priv = handle->priv;
- char *cmd_buf, *read_buf;
ssize_t size = 0;
- int ret = 0;
-
- read_buf = kzalloc(HNS3_DBG_READ_LEN, GFP_KERNEL);
- if (!read_buf)
- return -ENOMEM;
+ char **save_buf;
+ char *read_buf;
+ u32 index;
+ int ret;
- cmd_buf = filp->f_path.dentry->d_iname;
+ ret = hns3_dbg_get_cmd_index(handle, filp->f_path.dentry->d_iname,
+ &index);
+ if (ret)
+ return ret;
- if (ops->dbg_read_cmd)
- ret = ops->dbg_read_cmd(handle, cmd_buf, read_buf,
- HNS3_DBG_READ_LEN);
+ save_buf = &hns3_dbg_cmd[index].buf;
- if (ret) {
- dev_info(priv->dev, "unknown command\n");
+ 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)
+ return -ENOMEM;
+
+ /* save the buffer addr until the last read operation */
+ *save_buf = read_buf;
+ }
+
+ /* get data ready for the first time to read */
+ if (!*ppos) {
+ ret = hns3_dbg_read_cmd(handle, 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)
+ return size;
out:
- kfree(read_buf);
- return size;
+ /* free the buffer for the last read operation */
+ if (*save_buf) {
+ kvfree(*save_buf);
+ *save_buf = NULL;
+ }
+
+ return ret;
}
static const struct file_operations hns3_dbg_cmd_fops = {
.read = hns3_dbg_read,
};
-void hns3_dbg_init(struct hnae3_handle *handle)
+static int
+hns3_dbg_common_file_init(struct hnae3_handle *handle, u32 cmd)
+{
+ struct dentry *entry_dir;
+
+ entry_dir = hns3_dbg_dentry[hns3_dbg_cmd[cmd].dentry].dentry;
+ debugfs_create_file(hns3_dbg_cmd[cmd].name, 0400, entry_dir,
+ handle, &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);
- struct dentry *entry_dir;
+ int ret;
+ u32 i;
- handle->hnae3_dbgfs = debugfs_create_dir(name, hns3_dbgfs_root);
+ 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;
debugfs_create_file("cmd", 0600, handle->hnae3_dbgfs, handle,
&hns3_dbg_cmd_fops);
- entry_dir = debugfs_create_dir("tm", handle->hnae3_dbgfs);
- if (ae_dev->dev_version > HNAE3_DEVICE_VERSION_V2)
- debugfs_create_file(HNAE3_DBG_TM_NODES, 0600, entry_dir, handle,
- &hns3_dbg_fops);
- debugfs_create_file(HNAE3_DBG_TM_PRI, 0600, entry_dir, handle,
- &hns3_dbg_fops);
- debugfs_create_file(HNAE3_DBG_TM_QSET, 0600, entry_dir, handle,
- &hns3_dbg_fops);
+ 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);
+
+ 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)
+ 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:
+ 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 (hns3_dbg_cmd[i].buf) {
+ kvfree(hns3_dbg_cmd[i].buf);
+ hns3_dbg_cmd[i].buf = NULL;
+ }
+
debugfs_remove_recursive(handle->hnae3_dbgfs);
handle->hnae3_dbgfs = NULL;
}
return 0;
}
-int hclge_dbg_read_cmd(struct hnae3_handle *handle, const char *cmd_buf,
+static const struct hclge_dbg_func hclge_dbg_cmd_func[] = {
+ {
+ .cmd = HNAE3_DBG_CMD_TM_NODES,
+ .dbg_dump = hclge_dbg_dump_tm_nodes,
+ },
+ {
+ .cmd = HNAE3_DBG_CMD_TM_PRI,
+ .dbg_dump = hclge_dbg_dump_tm_pri,
+ },
+ {
+ .cmd = HNAE3_DBG_CMD_TM_QSET,
+ .dbg_dump = hclge_dbg_dump_tm_qset,
+ },
+};
+
+int hclge_dbg_read_cmd(struct hnae3_handle *handle, enum hnae3_dbg_cmd cmd,
char *buf, int len)
{
struct hclge_vport *vport = hclge_get_vport(handle);
struct hclge_dev *hdev = vport->back;
+ u32 i;
- if (strncmp(cmd_buf, HNAE3_DBG_TM_NODES,
- strlen(HNAE3_DBG_TM_NODES)) == 0)
- return hclge_dbg_dump_tm_nodes(hdev, buf, len);
- else if (strncmp(cmd_buf, HNAE3_DBG_TM_PRI,
- strlen(HNAE3_DBG_TM_PRI)) == 0)
- return hclge_dbg_dump_tm_pri(hdev, buf, len);
- else if (strncmp(cmd_buf, HNAE3_DBG_TM_QSET,
- strlen(HNAE3_DBG_TM_QSET)) == 0)
- return hclge_dbg_dump_tm_qset(hdev, buf, len);
+ for (i = 0; i < ARRAY_SIZE(hclge_dbg_cmd_func); i++) {
+ if (cmd == hclge_dbg_cmd_func[i].cmd)
+ return hclge_dbg_cmd_func[i].dbg_dump(hdev, buf, len);
+ }
+ dev_err(&hdev->pdev->dev, "invalid command(%d)\n", cmd);
return -EINVAL;
}
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