drm/amdgpu: use the GTT windows for BO moves v2

This way we don't need to map the full BO at a time any more.

v2: use fixed windows for src/dst

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index c8059f067185..4f5c1da5922e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -52,6 +52,8 @@ struct amdgpu_mman {
         /* buffer handling */
         const struct amdgpu_buffer_funcs        *buffer_funcs;
         struct amdgpu_ring                      *buffer_funcs_ring;
+
+        struct mutex                            gtt_window_lock;
         /* Scheduler entity for buffer moves */
         struct amd_sched_entity                 entity;
 };