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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>
This commit is contained in:
Chunming Zhou 2016-06-21 14:52:09 +08:00 committed by Alex Deucher
parent 6adb0513a4
commit a0250d36bd
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -1951,6 +1951,8 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
/* block TTM */
resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
/* save scratch */
amdgpu_atombios_scratch_regs_save(adev);
r = amdgpu_suspend(adev);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
@ -1975,7 +1977,8 @@ retry:
dev_info(adev->dev, "GPU reset succeeded, trying to resume\n");
r = amdgpu_resume(adev);
}
/* restore scratch */
amdgpu_atombios_scratch_regs_restore(adev);
if (!r) {
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];