accel/ivpu: Extend get_param ioctl to identify capabilities

Add DRM_IVPU_PARAM_CAPABILITIES parameters to get_param ioctl to query
driver capabilities. For now use it for identify metric streamer and
new dma memory range features. Currently upstream version of intel_vpu
does not have those, they will be added it the future.

Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230731161258.2987564-5-stanislaw.gruszka@linux.intel.com

drivers/accel/ivpu/ivpu_drv.c

@@ -115,6 +115,22 @@ void ivpu_file_priv_put(struct ivpu_file_priv **link)
 	kref_put(&file_priv->ref, file_priv_release);
 }
 
+static int ivpu_get_capabilities(struct ivpu_device *vdev, struct drm_ivpu_param *args)
+{
+	switch (args->index) {
+	case DRM_IVPU_CAP_METRIC_STREAMER:
+		args->value = 0;
+		break;
+	case DRM_IVPU_CAP_DMA_MEMORY_RANGE:
+		args->value = 0;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_file *file)
 {
 	struct ivpu_file_priv *file_priv = file->driver_priv;
@@ -174,6 +190,9 @@ static int ivpu_get_param_ioctl(struct drm_device *dev, void *data, struct drm_f
 	case DRM_IVPU_PARAM_SKU:
 		args->value = vdev->hw->sku;
 		break;
+	case DRM_IVPU_PARAM_CAPABILITIES:
+		ret = ivpu_get_capabilities(vdev, args);
+		break;
 	default:
 		ret = -EINVAL;
 		break;

include/uapi/drm/ivpu_accel.h

@@ -60,6 +60,7 @@ extern "C" {
 #define DRM_IVPU_PARAM_UNIQUE_INFERENCE_ID  10
 #define DRM_IVPU_PARAM_TILE_CONFIG	    11
 #define DRM_IVPU_PARAM_SKU		    12
+#define DRM_IVPU_PARAM_CAPABILITIES	    13
 
 #define DRM_IVPU_PLATFORM_TYPE_SILICON	    0
 
@@ -68,6 +69,9 @@ extern "C" {
 #define DRM_IVPU_CONTEXT_PRIORITY_FOCUS	    2
 #define DRM_IVPU_CONTEXT_PRIORITY_REALTIME  3
 
+#define DRM_IVPU_CAP_METRIC_STREAMER	    1
+#define DRM_IVPU_CAP_DMA_MEMORY_RANGE       2
+
 /**
  * struct drm_ivpu_param - Get/Set VPU parameters
  */