diff --git a/src/vulkan/runtime/vk_device.h b/src/vulkan/runtime/vk_device.h
index 2a6d1d14338..4d7220f832f 100644
--- a/src/vulkan/runtime/vk_device.h
+++ b/src/vulkan/runtime/vk_device.h
@@ -134,6 +134,37 @@ struct vk_device {
    /** Shader vtable for VK_EXT_shader_object and common pipelines */
    const struct vk_device_shader_ops *shader_ops;
 
+   /**
+    * Write data to a buffer from the command processor. This is simpler than
+    * setting up a staging buffer and faster for small writes, but is not
+    * meant for larger amounts of data. \p data is owned by the caller and the
+    * driver is expected to write it out directly to the command stream as
+    * part of an immediate write packet.
+    */
+   void (*write_buffer_cp)(VkCommandBuffer cmdbuf, VkDeviceAddress addr,
+                           void *data, uint32_t size);
+
+   /* Flush data written via write_buffer_cp. Users must use a normal pipeline
+    * barrier in order to read this data, with the appropriate destination
+    * access, but this replaces the source access mask.
+    */
+   void (*flush_buffer_write_cp)(VkCommandBuffer cmdbuf);
+
+   /* An unaligned dispatch function. This launches a number of threads that
+    * may not be a multiple of the workgroup size, which may result in partial
+    * workgroups.
+    */
+   void (*cmd_dispatch_unaligned)(VkCommandBuffer cmdbuf,
+                                  uint32_t invocations_x,
+                                  uint32_t invocations_y,
+                                  uint32_t invocations_z);
+
+   /* vkCmdFillBuffer but with a device address. */
+   void (*cmd_fill_buffer_addr)(VkCommandBuffer cmdbuf,
+                                VkDeviceAddress devAddr,
+                                VkDeviceSize size,
+                                uint32_t data);
+
    /** Driver provided callback for capturing traces
     * 
     * Triggers for this callback are: