diff options
Diffstat (limited to 'drivers/accel/qaic/qaic_debugfs.c')
| -rw-r--r-- | drivers/accel/qaic/qaic_debugfs.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/accel/qaic/qaic_debugfs.c b/drivers/accel/qaic/qaic_debugfs.c index b362960941d7..20b653d99e52 100644 --- a/drivers/accel/qaic/qaic_debugfs.c +++ b/drivers/accel/qaic/qaic_debugfs.c @@ -98,6 +98,36 @@ static const struct file_operations fifo_size_fops = { .release = single_release, }; +static int read_dbc_queued(struct seq_file *s, void *unused) +{ + struct dma_bridge_chan *dbc = s->private; + u32 tail = 0, head = 0; + + qaic_data_get_fifo_info(dbc, &head, &tail); + + if (head == U32_MAX || tail == U32_MAX) + seq_printf(s, "%u\n", 0); + else if (head > tail) + seq_printf(s, "%u\n", dbc->nelem - head + tail); + else + seq_printf(s, "%u\n", tail - head); + + return 0; +} + +static int queued_open(struct inode *inode, struct file *file) +{ + return single_open(file, read_dbc_queued, inode->i_private); +} + +static const struct file_operations queued_fops = { + .owner = THIS_MODULE, + .open = queued_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + void qaic_debugfs_init(struct qaic_drm_device *qddev) { struct qaic_device *qdev = qddev->qdev; @@ -117,6 +147,7 @@ void qaic_debugfs_init(struct qaic_drm_device *qddev) snprintf(name, QAIC_DBC_DIR_NAME, "dbc%03u", i); debugfs_dir = debugfs_create_dir(name, debugfs_root); debugfs_create_file("fifo_size", 0400, debugfs_dir, &qdev->dbc[i], &fifo_size_fops); + debugfs_create_file("queued", 0400, debugfs_dir, &qdev->dbc[i], &queued_fops); } } |