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drm/amdgpu: fix usable gart size calculation

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amdgpu_do_test_moves() is failing because of wrong
usable gart size calculation and throwing:

[drm:amdgpu_do_test_moves [amdgpu]] *ERROR* 0000000020bdc9f3 bind failed

Signed-off-by: Nirmoy Das <nirmoy.das@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Nirmoy Das 2020-11-12 18:36:01 +01:00 committed by Alex Deucher
parent 1331e6304f
commit b3fcde184e
1 changed files with 4 additions and 9 deletions
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13
drivers/gpu/drm/amd/amdgpu/amdgpu_test.c
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@ -42,16 +42,11 @@ static void amdgpu_do_test_moves(struct amdgpu_device *adev)
size = 1024 * 1024;
/* Number of tests =
* (Total GTT - IB pool - writeback page - ring buffers) / test size
* (Total GTT - gart_pin_size - (2 transfer windows for buffer moves)) / test size
*/
n = adev->gmc.gart_size - AMDGPU_IB_POOL_SIZE;
for (i = 0; i < AMDGPU_MAX_RINGS; ++i)
if (adev->rings[i])
n -= adev->rings[i]->ring_size;
if (adev->wb.wb_obj)
n -= AMDGPU_GPU_PAGE_SIZE;
if (adev->irq.ih.ring_obj)
n -= adev->irq.ih.ring_size;
n = adev->gmc.gart_size - atomic64_read(&adev->gart_pin_size);
n -= AMDGPU_GTT_MAX_TRANSFER_SIZE * AMDGPU_GTT_NUM_TRANSFER_WINDOWS *
AMDGPU_GPU_PAGE_SIZE;
n /= size;
gtt_obj = kcalloc(n, sizeof(*gtt_obj), GFP_KERNEL);