drm/vmwgfx: Add command buffer support v3
Add command buffer support.
Currently we don't implement preemption or fancy error handling.
Tested with a couple of mesa-demos, compiz/unity and viewperf maya-03.
v2:
- Synchronize with pending work at command buffer manager takedown.
- Add an interface to flush the current command buffer for latency-critical
command batches and apply it to framebuffer dirtying.
v3:
- Minor fixes of definitions and typos to address reviews.
- Removed new or moved branch predictor hints.
Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 07cda8c..b5632c2 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -631,6 +631,7 @@
flags, color,
clips, num_clips, inc, NULL);
+ vmw_fifo_flush(dev_priv, false);
ttm_read_unlock(&dev_priv->reservation_sem);
drm_modeset_unlock_all(dev_priv->dev);
@@ -987,6 +988,7 @@
clips, num_clips, increment, NULL);
}
+ vmw_fifo_flush(dev_priv, false);
ttm_read_unlock(&dev_priv->reservation_sem);
drm_modeset_unlock_all(dev_priv->dev);
@@ -1347,6 +1349,8 @@
break;
}
+ vmw_fifo_flush(dev_priv, false);
+
kfree(cmd);
out_free_tmp:
kfree(tmp);