diff options
| author | Yintian Tao <yttao@amd.com> | 2020-04-07 18:08:39 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-04-13 12:01:04 -0400 |
| commit | 95a2f917387a23c8b09f4ab95e1560a69db5b1f1 (patch) | |
| tree | 5d624151bd3b42bea2996505804d25fe6123ff1b /drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | |
| parent | 9a785c7ad1d775f41c61bc380a98e710bc71347e (diff) | |
drm/amdgpu: restrict debugfs register access under SR-IOV
Under bare metal, there is no more else to take
care of the GPU register access through MMIO.
Under Virtualization, to access GPU register is
implemented through KIQ during run-time due to
world-switch.
Therefore, under SR-IOV user can only access
debugfs to r/w GPU registers when meets all
three conditions below.
- amdgpu_gpu_recovery=0
- TDR happened
- in_gpu_reset=0
v2: merge amdgpu_virt_can_access_debugfs() into
amdgpu_virt_enable_access_debugfs()
v3: drop ret variable in amdgpu_virt_enable_access_debugfs()
and directly return result
Signed-off-by: Yintian Tao <yttao@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_job.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c index 2b99f5952375..35c381ec0423 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c @@ -33,6 +33,7 @@ static void amdgpu_job_timedout(struct drm_sched_job *s_job) struct amdgpu_ring *ring = to_amdgpu_ring(s_job->sched); struct amdgpu_job *job = to_amdgpu_job(s_job); struct amdgpu_task_info ti; + struct amdgpu_device *adev = ring->adev; memset(&ti, 0, sizeof(struct amdgpu_task_info)); @@ -49,10 +50,13 @@ static void amdgpu_job_timedout(struct drm_sched_job *s_job) DRM_ERROR("Process information: process %s pid %d thread %s pid %d\n", ti.process_name, ti.tgid, ti.task_name, ti.pid); - if (amdgpu_device_should_recover_gpu(ring->adev)) + if (amdgpu_device_should_recover_gpu(ring->adev)) { amdgpu_device_gpu_recover(ring->adev, job); - else + } else { drm_sched_suspend_timeout(&ring->sched); + if (amdgpu_sriov_vf(adev)) + adev->virt.tdr_debug = true; + } } int amdgpu_job_alloc(struct amdgpu_device *adev, unsigned num_ibs, |