diff options
| -rw-r--r-- | drivers/accel/qaic/qaic.h | 1 | ||||
| -rw-r--r-- | drivers/accel/qaic/qaic_data.c | 9 | ||||
| -rw-r--r-- | drivers/accel/qaic/qaic_debugfs.c | 31 |
3 files changed, 41 insertions, 0 deletions
diff --git a/drivers/accel/qaic/qaic.h b/drivers/accel/qaic/qaic.h index 03d9c9fbffb3..02561b6cecc6 100644 --- a/drivers/accel/qaic/qaic.h +++ b/drivers/accel/qaic/qaic.h @@ -288,6 +288,7 @@ int disable_dbc(struct qaic_device *qdev, u32 dbc_id, struct qaic_user *usr); void enable_dbc(struct qaic_device *qdev, u32 dbc_id, struct qaic_user *usr); void wakeup_dbc(struct qaic_device *qdev, u32 dbc_id); void release_dbc(struct qaic_device *qdev, u32 dbc_id); +void qaic_data_get_fifo_info(struct dma_bridge_chan *dbc, u32 *head, u32 *tail); void wake_all_cntl(struct qaic_device *qdev); void qaic_dev_reset_clean_local_state(struct qaic_device *qdev); diff --git a/drivers/accel/qaic/qaic_data.c b/drivers/accel/qaic/qaic_data.c index 2459fe4a3f95..e86e71c1cdd8 100644 --- a/drivers/accel/qaic/qaic_data.c +++ b/drivers/accel/qaic/qaic_data.c @@ -1981,3 +1981,12 @@ void release_dbc(struct qaic_device *qdev, u32 dbc_id) dbc->in_use = false; wake_up(&dbc->dbc_release); } + +void qaic_data_get_fifo_info(struct dma_bridge_chan *dbc, u32 *head, u32 *tail) +{ + if (!dbc || !head || !tail) + return; + + *head = readl(dbc->dbc_base + REQHP_OFF); + *tail = readl(dbc->dbc_base + REQTP_OFF); +} 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); } } |