drm/amd/display: Enable copying of bounding box data from VBIOS DMUB

Allocate some memory, send the address in chunks to dmub, and finally
ask it to copy the bounding box data into the newly allocated memory.

Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

@@ -578,6 +578,11 @@ struct amdgpu_display_manager {
 	 * Guards access to DPIA AUX
 	 */
 	struct mutex dpia_aux_lock;
+
+	/*
+	 * Bounding box data read from dmub during early initialization for DCN4+
+	 */
+	struct dml2_soc_bb *bb_from_dmub;
 };
 
 enum dsc_clock_force_state {
@@ -964,4 +969,9 @@ amdgpu_dm_find_first_crtc_matching_connector(struct drm_atomic_state *state,
 
 int convert_dc_color_depth_into_bpc(enum dc_color_depth display_color_depth);
 struct idle_workqueue *idle_create_workqueue(struct amdgpu_device *adev);
+
+void *dm_allocate_gpu_mem(struct amdgpu_device *adev,
+						  enum dc_gpu_mem_alloc_type type,
+						  size_t size,
+						  long long *addr);
 #endif /* __AMDGPU_DM_H__ */