drm/amdgpu: Fill out gem_object->resv

That way we can ditch our gem_prime_res_obj implementation. Since ttm
absolutely needs the right reservation object all the boilerplate is
already there and we just have to wire it up correctly.

Note that gem/prime doesn't care when we do this, as long as we do it
before the bo is registered and someone can call the handle2fd ioctl
on it.

Aside: ttm_buffer_object.ttm_resv could probably be ditched in favour
of always passing a non-NULL resv to ttm_bo_init(). At least for gem
drivers that would avoid having two of these, on in ttm_buffer_object
and the other in drm_gem_object, one just there for confusion.

Acked-by: Gerd Hoffmann <[email protected]>
Cc: Gerd Hoffmann <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Signed-off-by: Daniel Vetter <[email protected]>
Cc: Alex Deucher <[email protected]>
Cc: "Christian König" <[email protected]>
Cc: Daniel Vetter <[email protected]>
Cc: "Michel Dänzer" <[email protected]>
Cc: Chris Wilson <[email protected]>
Cc: Huang Rui <[email protected]>
Cc: Felix Kuehling <[email protected]>
Cc: Andrey Grodzovsky <[email protected]>
Cc: Evan Quan <[email protected]>
Cc: Sonny Jiang <[email protected]>
Cc: Amber Lin <[email protected]>
Cc: "Michał Mirosław" <[email protected]>
Cc: Junwei Zhang <[email protected]>
Cc: Thomas Zimmermann <[email protected]>
Cc: Samuel Li <[email protected]>
Reviewed-by: Christian König <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index bea6f298dfdc..19ec775b7aa8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -509,6 +509,8 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
 	if (unlikely(r != 0))
 		return r;
 
+	bo->gem_base.resv = bo->tbo.resv;
+
 	if (!amdgpu_gmc_vram_full_visible(&adev->gmc) &&
 	    bo->tbo.mem.mem_type == TTM_PL_VRAM &&
 	    bo->tbo.mem.start < adev->gmc.visible_vram_size >> PAGE_SHIFT)