diff --git a/include/drm-uapi/nouveau_drm.h b/include/drm-uapi/nouveau_drm.h
index dd87f8f3079..1fa82fa6af3 100644
--- a/include/drm-uapi/nouveau_drm.h
+++ b/include/drm-uapi/nouveau_drm.h
@@ -432,6 +432,69 @@ struct drm_nouveau_exec {
 	__u64 push_ptr;
 };
 
+struct drm_nouveau_get_zcull_info {
+	/**
+	 * @width_align_pixels: required alignment for region widths, in pixels
+	 * (typically #TPC's * 16).
+	 */
+	__u32 width_align_pixels;
+	/**
+	 * @height_align_pixels: required alignment for region heights, in
+	 * pixels (typically 32).
+	 */
+	__u32 height_align_pixels;
+	/**
+	 * @pixel_squares_by_aliquots: the pixel area covered by an aliquot
+	 * (typically #Zcull_banks * 16 * 16).
+	 */
+	__u32 pixel_squares_by_aliquots;
+	/**
+	 * @aliquot_total: the total aliquot pool available in hardware
+	 */
+	__u32 aliquot_total;
+	/**
+	 * @zcull_region_byte_multiplier: the size of an aliquot in bytes, which
+	 * is used for save/restore operations on a region
+	 */
+	__u32 zcull_region_byte_multiplier;
+	/**
+	 * @zcull_region_header_size: the region header size in bytes, which is
+	 * used for save/restore operations on a region
+	 */
+	__u32 zcull_region_header_size;
+	/**
+	 * @zcull_subregion_header_size: the subregion header size in bytes,
+	 * which is used for save/restore operations on a region
+	 */
+	__u32 zcull_subregion_header_size;
+	/**
+	 * @subregion_count: the total number of subregions the hardware
+	 * supports
+	 */
+	__u32 subregion_count;
+	/**
+	 * @subregion_width_align_pixels: required alignment for subregion
+	 * widths, in pixels (typically #TPC's * 16).
+	 */
+	__u32 subregion_width_align_pixels;
+	/**
+	 * @subregion_height_align_pixels: required alignment for subregion
+	 * heights, in pixels
+	 */
+	__u32 subregion_height_align_pixels;
+
+	/**
+	 * @ctxsw_size: the size, in bytes, of a zcull context switching region.
+	 * Will be zero if the kernel does not support zcull context switching.
+	 */
+	__u32 ctxsw_size;
+	/**
+	 * @ctxsw_align: the alignment, in bytes, of a zcull context switching
+	 * region
+	 */
+	__u32 ctxsw_align;
+};
+
 #define DRM_NOUVEAU_GETPARAM           0x00
 #define DRM_NOUVEAU_SETPARAM           0x01 /* deprecated */
 #define DRM_NOUVEAU_CHANNEL_ALLOC      0x02
@@ -445,6 +508,7 @@ struct drm_nouveau_exec {
 #define DRM_NOUVEAU_VM_INIT            0x10
 #define DRM_NOUVEAU_VM_BIND            0x11
 #define DRM_NOUVEAU_EXEC               0x12
+#define DRM_NOUVEAU_GET_ZCULL_INFO     0x13
 #define DRM_NOUVEAU_GEM_NEW            0x40
 #define DRM_NOUVEAU_GEM_PUSHBUF        0x41
 #define DRM_NOUVEAU_GEM_CPU_PREP       0x42
@@ -513,6 +577,8 @@ struct drm_nouveau_svm_bind {
 #define DRM_IOCTL_NOUVEAU_VM_INIT            DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_VM_INIT, struct drm_nouveau_vm_init)
 #define DRM_IOCTL_NOUVEAU_VM_BIND            DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_VM_BIND, struct drm_nouveau_vm_bind)
 #define DRM_IOCTL_NOUVEAU_EXEC               DRM_IOWR(DRM_COMMAND_BASE + DRM_NOUVEAU_EXEC, struct drm_nouveau_exec)
+
+#define DRM_IOCTL_NOUVEAU_GET_ZCULL_INFO     DRM_IOR (DRM_COMMAND_BASE + DRM_NOUVEAU_GET_ZCULL_INFO, struct drm_nouveau_get_zcull_info)
 #if defined(__cplusplus)
 }
 #endif