diff --git a/redox-ioctl/src/drm.rs b/redox-ioctl/src/drm.rs
index edab1d5424..514ac61617 100644
--- a/redox-ioctl/src/drm.rs
+++ b/redox-ioctl/src/drm.rs
@@ -6,10 +6,10 @@ use core::{
 };
 
 pub use drm_sys::{
-    __kernel_size_t, drm_get_cap, drm_mode_card_res, drm_mode_crtc, drm_mode_fb_cmd,
-    drm_mode_fb_cmd2, drm_mode_get_connector, drm_mode_get_encoder, drm_mode_get_plane,
-    drm_mode_get_plane_res, drm_mode_modeinfo, drm_mode_obj_get_properties, drm_set_client_cap,
-    drm_version,
+    __kernel_size_t, drm_get_cap, drm_mode_card_res, drm_mode_create_dumb, drm_mode_crtc,
+    drm_mode_destroy_dumb, drm_mode_fb_cmd, drm_mode_fb_cmd2, drm_mode_get_connector,
+    drm_mode_get_encoder, drm_mode_get_plane, drm_mode_get_plane_res, drm_mode_map_dumb,
+    drm_mode_modeinfo, drm_mode_obj_get_properties, drm_set_client_cap, drm_version,
 };
 
 pub const VERSION: u64 = 0;
@@ -124,6 +124,35 @@ define_ioctl_data! {
     }
 }
 
+pub const MODE_CREATE_DUMB: u64 = 0xB2;
+define_ioctl_data! {
+    struct drm_mode_create_dumb, DrmModeCreateDumb {
+        height: u32,
+        width: u32,
+        bpp: u32,
+        flags: u32,
+        handle: u32,
+        pitch: u32,
+        size: u64,
+    }
+}
+
+pub const MODE_MAP_DUMB: u64 = 0xB3;
+define_ioctl_data! {
+    struct drm_mode_map_dumb, DrmModeMapDumb {
+        handle: u32,
+        pad: u32,
+        offset: u64,
+    }
+}
+
+pub const MODE_DESTROY_DUMB: u64 = 0xB4;
+define_ioctl_data! {
+    struct drm_mode_destroy_dumb, DrmModeDestroyDumb {
+        handle: u32,
+    }
+}
+
 pub const MODE_GET_PLANE_RES: u64 = 0xB5;
 define_ioctl_data! {
     struct drm_mode_get_plane_res, DrmModeGetPlaneRes {
diff --git a/src/header/sys_ioctl/redox/drm.rs b/src/header/sys_ioctl/redox/drm.rs
index a0692bdd95..32c208c6b5 100644
--- a/src/header/sys_ioctl/redox/drm.rs
+++ b/src/header/sys_ioctl/redox/drm.rs
@@ -56,16 +56,6 @@ impl Dev {
         Ok(Self { fd })
     }
 
-    unsafe fn call<T>(&self, payload: &mut T, func: u64) -> syscall::Result<usize> {
-        let bytes = slice::from_raw_parts_mut(payload as *mut T as *mut u8, size_of::<T>());
-        redox_rt::sys::sys_call(
-            self.fd as usize,
-            bytes,
-            syscall::CallFlags::empty(),
-            &[func],
-        )
-    }
-
     unsafe fn read_write_ioctl<T: IoctlData>(
         &self,
         mut buf: IoctlBuffer,
@@ -108,6 +98,9 @@ pub(super) unsafe fn ioctl(fd: c_int, func: u8, buf: IoctlBuffer) -> Result<c_in
         0xA6 => dev.read_write_ioctl::<drm_mode_get_encoder>(buf, MODE_GET_ENCODER),
         0xA7 => dev.read_write_ioctl::<drm_mode_get_connector>(buf, MODE_GET_CONNECTOR),
         0xAD => dev.read_write_ioctl::<drm_mode_fb_cmd>(buf, MODE_GET_FB),
+        0xB2 => dev.read_write_ioctl::<drm_mode_create_dumb>(buf, MODE_CREATE_DUMB),
+        0xB3 => dev.read_write_ioctl::<drm_mode_map_dumb>(buf, MODE_MAP_DUMB),
+        0xB4 => dev.read_write_ioctl::<drm_mode_destroy_dumb>(buf, MODE_DESTROY_DUMB),
         0xB5 => dev.read_write_ioctl::<drm_mode_get_plane_res>(buf, MODE_GET_PLANE_RES),
         0xB6 => dev.read_write_ioctl::<drm_mode_get_plane>(buf, MODE_GET_PLANE),
         0xB9 => dev.read_write_ioctl::<drm_mode_obj_get_properties>(buf, MODE_OBJ_GET_PROPERTIES),