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drm/amdgpu: wait on page directory changes. v2

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Pagetables can be moved and therefore the page directory update can be necessary
for the current cs even if none of the the bo's are moved. In that scenario
there is no fence between the sdma0 and gfx ring, so we add one.

v2 (chk): rebased

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bas Nieuwenhuizen
2015-08-14 20:08:40 +02:00
committed by Alex Deucher
parent b325a789c7
commit 05906dec7d
3 changed files with 11 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
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@@ -982,6 +982,7 @@ struct amdgpu_vm {
/* contains the page directory */
struct amdgpu_bo *page_directory;
unsigned max_pde_used;
struct fence *page_directory_fence;
/* array of page tables, one for each page directory entry */
struct amdgpu_vm_pt *page_tables;