Merge tag 'drm-intel-next-2018-07-09' of git://anongit.freedesktop.org/drm/drm-intel...

[linux.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_vram_mgr.c

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index 9c47e860e5e6554c02016c8d41bb0101f7e59922..f7a4bd5885a399e20fc3a5a7b1fecd3c02674d9a 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -96,6 +96,38 @@ static u64 amdgpu_vram_mgr_vis_size(struct amdgpu_device *adev,
                adev->gmc.visible_vram_size : end) - start;
 }
 
+/**
+ * amdgpu_vram_mgr_bo_invisible_size - CPU invisible BO size
+ *
+ * @bo: &amdgpu_bo buffer object (must be in VRAM)
+ *
+ * Returns:
+ * How much of the given &amdgpu_bo buffer object lies in CPU invisible VRAM.
+ */
+u64 amdgpu_vram_mgr_bo_invisible_size(struct amdgpu_bo *bo)
+{
+       struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
+       struct ttm_mem_reg *mem = &bo->tbo.mem;
+       struct drm_mm_node *nodes = mem->mm_node;
+       unsigned pages = mem->num_pages;
+       u64 usage = 0;
+
+       if (amdgpu_gmc_vram_full_visible(&adev->gmc))
+               return 0;
+
+       if (mem->start >= adev->gmc.visible_vram_size >> PAGE_SHIFT)
+               return amdgpu_bo_size(bo);
+
+       while (nodes && pages) {
+               usage += nodes->size << PAGE_SHIFT;
+               usage -= amdgpu_vram_mgr_vis_size(adev, nodes);
+               pages -= nodes->size;
+               ++nodes;
+       }
+
+       return usage;
+}
+
 /**
  * amdgpu_vram_mgr_new - allocate new ranges
  *