Add reset per device support

Currently when the device is reset, the entire DPRC container
was reset which is very inefficient because the devices within a
container will be reset multiple times.
Added support for individually resetting a device.

Signed-off-by: Diana Craciun <diana.craciun@oss.nxp.com>

drivers/vfio/fsl-mc/vfio_fsl_mc.c

@@ -162,6 +162,33 @@ err_reg_init:
 	return ret;
 }
 
+static int vfio_fsl_mc_reset_device(struct vfio_fsl_mc_device *vdev)
+{
+	struct fsl_mc_device *mc_dev = vdev->mc_dev;
+	u16 token;
+	int ret = 0;
+
+	if (is_fsl_mc_bus_dprc(vdev->mc_dev)) {
+		return dprc_reset_container(mc_dev->mc_io, 0,
+					mc_dev->mc_handle,
+					mc_dev->obj_desc.id,
+					DPRC_RESET_OPTION_NON_RECURSIVE);
+	} else {
+		int err;
+
+		err = fsl_mc_obj_open(mc_dev->mc_io, 0, mc_dev->obj_desc.id,
+				      mc_dev->obj_desc.type,
+				      &token);
+		if (err)
+			return err;
+		ret = fsl_mc_obj_reset(mc_dev->mc_io, 0, token);
+		err = fsl_mc_obj_close(mc_dev->mc_io, 0, token);
+		if (err)
+			return err;
+	}
+	return ret;
+}
+
 static void vfio_fsl_mc_release(void *device_data)
 {
 	struct vfio_fsl_mc_device *vdev = device_data;
@@ -177,10 +204,7 @@ static void vfio_fsl_mc_release(void *device_data)
 		vfio_fsl_mc_regions_cleanup(vdev);
 
 		/* reset the device before cleaning up the interrupts */
-		ret = dprc_reset_container(mc_cont->mc_io, 0,
-		      mc_cont->mc_handle,
-			  mc_cont->obj_desc.id,
-			  DPRC_RESET_OPTION_NON_RECURSIVE);
+		ret = vfio_fsl_mc_reset_device(vdev);
 
 		if (ret) {
 			dev_warn(&mc_cont->dev, "VFIO_FLS_MC: reset device has failed (%d)\n",