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drm/amdgpu: save/restore bios scratch when gpu reset
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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1 changed files with 4 additions and 1 deletions
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@ -1951,6 +1951,8 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
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/* block TTM */
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resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
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/* save scratch */
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amdgpu_atombios_scratch_regs_save(adev);
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r = amdgpu_suspend(adev);
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for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
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@ -1975,7 +1977,8 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
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dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
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r = amdgpu_resume(adev);
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}
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/* restore scratch */
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amdgpu_atombios_scratch_regs_restore(adev);
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if (!r) {
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for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
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struct amdgpu_ring *ring = adev->rings[i];
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