diff --git a/Cargo.lock b/Cargo.lock
index c850e02047..8c81318326 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -577,6 +577,7 @@ name = "driver-graphics"
 version = "0.1.0"
 dependencies = [
  "common",
+ "drm-sys",
  "graphics-ipc",
  "inputd",
  "libredox",
@@ -595,6 +596,16 @@ dependencies = [
  "redox_syscall",
 ]
 
+[[package]]
+name = "drm-sys"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bafb66c8dbc944d69e15cfcc661df7e703beffbaec8bd63151368b06c5f9858c"
+dependencies = [
+ "libc",
+ "linux-raw-sys",
+]
+
 [[package]]
 name = "e1000d"
 version = "0.1.0"
@@ -855,6 +866,7 @@ name = "graphics-ipc"
 version = "0.1.0"
 dependencies = [
  "common",
+ "drm-sys",
  "libredox",
  "log",
 ]
@@ -1088,6 +1100,12 @@ dependencies = [
  "redox_syscall",
 ]
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a385b1be4e5c3e362ad2ffa73c392e53f031eaa5b7d648e64cd87f27f6063d7"
+
 [[package]]
 name = "lived"
 version = "0.1.0"
diff --git a/drivers/graphics/driver-graphics/Cargo.toml b/drivers/graphics/driver-graphics/Cargo.toml
index 423816db62..553951225a 100644
--- a/drivers/graphics/driver-graphics/Cargo.toml
+++ b/drivers/graphics/driver-graphics/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+drm-sys = "0.8.0"
 log = "0.4"
 redox-scheme = "0.8.2"
 redox_syscall = "0.5"
diff --git a/drivers/graphics/driver-graphics/src/lib.rs b/drivers/graphics/driver-graphics/src/lib.rs
index 69d0b67481..9b1a8c8dbd 100644
--- a/drivers/graphics/driver-graphics/src/lib.rs
+++ b/drivers/graphics/driver-graphics/src/lib.rs
@@ -22,8 +22,8 @@ pub trait GraphicsAdapter {
     fn name(&self) -> &'static [u8];
     fn desc(&self) -> &'static [u8];
 
-    fn get_cap(&self, cap: u64) -> Result<u64>;
-    fn set_client_cap(&self, cap: u64, value: u64) -> Result<()>;
+    fn get_cap(&self, cap: u32) -> Result<u64>;
+    fn set_client_cap(&self, cap: u32, value: u64) -> Result<()>;
 
     /// The maximum amount of displays that could be attached.
     ///
@@ -463,29 +463,40 @@ impl<T: GraphicsAdapter> SchemeSync for GraphicsScheme<T> {
                     Ok(size_of::<ipc::Version>())
                 }
                 ipc::GET_CAP => {
-                    if payload.len() < size_of::<ipc::GetCap>() {
+                    if payload.len() < size_of::<drm_sys::drm_get_cap>() {
                         return Err(Error::new(EINVAL));
                     }
                     let payload = unsafe {
-                        transmute::<&mut [u8; size_of::<ipc::GetCap>()], &mut ipc::GetCap>(
+                        transmute::<&mut [u8; size_of::<drm_sys::drm_get_cap>()], &mut drm_sys::drm_get_cap>(
                             payload.as_mut_array().unwrap(),
                         )
                     };
-                    payload.value = self.adapter.get_cap(payload.capability)?;
-                    Ok(size_of::<ipc::GetCap>())
+                    payload.value = self.adapter.get_cap(
+                        payload
+                            .capability
+                            .try_into()
+                            .map_err(|_| syscall::Error::new(EINVAL))?,
+                    )?;
+                    Ok(size_of::<drm_sys::drm_get_cap>())
                 }
                 ipc::SET_CLIENT_CAP => {
-                    if payload.len() < size_of::<ipc::SetClientCap>() {
+                    if payload.len() < size_of::<drm_sys::drm_set_client_cap>() {
                         return Err(Error::new(EINVAL));
                     }
                     let payload = unsafe {
-                        transmute::<&mut [u8; size_of::<ipc::SetClientCap>()], &mut ipc::SetClientCap>(
-                            payload.as_mut_array().unwrap(),
-                        )
+                        transmute::<
+                            &mut [u8; size_of::<drm_sys::drm_set_client_cap>()],
+                            &mut drm_sys::drm_set_client_cap,
+                        >(payload.as_mut_array().unwrap())
                     };
-                    self.adapter
-                        .set_client_cap(payload.capability, payload.value)?;
-                    Ok(size_of::<ipc::SetClientCap>())
+                    self.adapter.set_client_cap(
+                        payload
+                            .capability
+                            .try_into()
+                            .map_err(|_| syscall::Error::new(EINVAL))?,
+                        payload.value,
+                    )?;
+                    Ok(size_of::<drm_sys::drm_set_client_cap>())
                 }
                 ipc::DISPLAY_COUNT => {
                     if payload.len() < size_of::<ipc::DisplayCount>() {
diff --git a/drivers/graphics/graphics-ipc/Cargo.toml b/drivers/graphics/graphics-ipc/Cargo.toml
index 7491222b9c..cd9c02879e 100644
--- a/drivers/graphics/graphics-ipc/Cargo.toml
+++ b/drivers/graphics/graphics-ipc/Cargo.toml
@@ -4,6 +4,7 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
+drm-sys = "0.8.0"
 log = "0.4"
 libredox = "0.1.3"
 
diff --git a/drivers/graphics/graphics-ipc/src/v2.rs b/drivers/graphics/graphics-ipc/src/v2.rs
index bad15c7478..80292da55e 100644
--- a/drivers/graphics/graphics-ipc/src/v2.rs
+++ b/drivers/graphics/graphics-ipc/src/v2.rs
@@ -167,20 +167,10 @@ pub mod ipc {
     }
 
     pub const GET_CAP: u64 = 0x0C;
-    pub const CAP_DUMB_BUFFER: u64 = 0x1;
-    #[repr(C, packed)]
-    pub struct GetCap {
-        pub capability: u64,
-        pub value: u64,
-    }
+    pub use drm_sys::DRM_CAP_DUMB_BUFFER;
 
     pub const SET_CLIENT_CAP: u64 = 0x0D;
-    pub const CLIENT_CAP_CURSOR_PLANE_HOTSPOT: u64 = 6;
-    #[repr(C, packed)]
-    pub struct SetClientCap {
-        pub capability: u64,
-        pub value: u64,
-    }
+    pub use drm_sys::DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT;
 
     // FIXME replace these with proper drm interfaces
     pub const DISPLAY_COUNT: u64 = 1;
diff --git a/drivers/graphics/vesad/src/scheme.rs b/drivers/graphics/vesad/src/scheme.rs
index 0c91f82b99..e77458411f 100644
--- a/drivers/graphics/vesad/src/scheme.rs
+++ b/drivers/graphics/vesad/src/scheme.rs
@@ -4,7 +4,7 @@ use std::ptr::{self, NonNull};
 
 use driver_graphics::{CursorFramebuffer, CursorPlane, Framebuffer, GraphicsAdapter};
 use graphics_ipc::v1::Damage;
-use graphics_ipc::v2::ipc::{CAP_DUMB_BUFFER, CLIENT_CAP_CURSOR_PLANE_HOTSPOT};
+use graphics_ipc::v2::ipc::{DRM_CAP_DUMB_BUFFER, DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT};
 use syscall::{EINVAL, PAGE_SIZE};
 
 pub struct FbAdapter {
@@ -27,16 +27,16 @@ impl GraphicsAdapter for FbAdapter {
         b"VESA"
     }
 
-    fn get_cap(&self, cap: u64) -> syscall::Result<u64> {
+    fn get_cap(&self, cap: u32) -> syscall::Result<u64> {
         match cap {
-            CAP_DUMB_BUFFER => Ok(1),
+            DRM_CAP_DUMB_BUFFER => Ok(1),
             _ => Err(syscall::Error::new(EINVAL)),
         }
     }
 
-    fn set_client_cap(&self, cap: u64, _value: u64) -> syscall::Result<()> {
+    fn set_client_cap(&self, cap: u32, _value: u64) -> syscall::Result<()> {
         match cap {
-            CLIENT_CAP_CURSOR_PLANE_HOTSPOT => Ok(()),
+            DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT => Ok(()),
             _ => Err(syscall::Error::new(EINVAL)),
         }
     }
diff --git a/drivers/graphics/virtio-gpud/src/scheme.rs b/drivers/graphics/virtio-gpud/src/scheme.rs
index 00a9d5e016..19e048f07d 100644
--- a/drivers/graphics/virtio-gpud/src/scheme.rs
+++ b/drivers/graphics/virtio-gpud/src/scheme.rs
@@ -5,7 +5,7 @@ use driver_graphics::{
     CursorFramebuffer, CursorPlane, Framebuffer, GraphicsAdapter, GraphicsScheme,
 };
 use graphics_ipc::v1::Damage;
-use graphics_ipc::v2::ipc::{CAP_DUMB_BUFFER, CLIENT_CAP_CURSOR_PLANE_HOTSPOT};
+use graphics_ipc::v2::ipc::{DRM_CAP_DUMB_BUFFER, DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT};
 use inputd::DisplayHandle;
 
 use syscall::{EINVAL, PAGE_SIZE};
@@ -209,17 +209,17 @@ impl<'a> GraphicsAdapter for VirtGpuAdapter<'a> {
         b"VirtIO GPU"
     }
 
-    fn get_cap(&self, cap: u64) -> syscall::Result<u64> {
+    fn get_cap(&self, cap: u32) -> syscall::Result<u64> {
         match cap {
-            CAP_DUMB_BUFFER => Ok(1),
+            DRM_CAP_DUMB_BUFFER => Ok(1),
             _ => Err(syscall::Error::new(EINVAL)),
         }
     }
 
-    fn set_client_cap(&self, cap: u64, _value: u64) -> syscall::Result<()> {
+    fn set_client_cap(&self, cap: u32, _value: u64) -> syscall::Result<()> {
         match cap {
             // FIXME hide cursor plane unless this client cap is set
-            CLIENT_CAP_CURSOR_PLANE_HOTSPOT => Ok(()),
+            DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT => Ok(()),
             _ => Err(syscall::Error::new(EINVAL)),
         }
     }