diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c index c8885c3d54b3..f1f67521c29c 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vcn.c @@ -134,6 +134,7 @@ int amdgpu_vcn_sw_init(struct amdgpu_device *adev, int i) mutex_init(&adev->vcn.inst[i].vcn1_jpeg1_workaround); mutex_init(&adev->vcn.inst[i].vcn_pg_lock); + mutex_init(&adev->vcn.inst[i].engine_reset_mutex); atomic_set(&adev->vcn.inst[i].total_submission_cnt, 0); INIT_DELAYED_WORK(&adev->vcn.inst[i].idle_work, amdgpu_vcn_idle_work_handler); atomic_set(&adev->vcn.inst[i].dpg_enc_submission_cnt, 0); @@ -1451,3 +1452,78 @@ int vcn_set_powergating_state(struct amdgpu_ip_block *ip_block, return ret; } + +/** + * amdgpu_vcn_reset_engine - Reset a specific VCN engine + * @adev: Pointer to the AMDGPU device + * @instance_id: VCN engine instance to reset + * + * Returns: 0 on success, or a negative error code on failure. + */ +static int amdgpu_vcn_reset_engine(struct amdgpu_device *adev, + uint32_t instance_id) +{ + struct amdgpu_vcn_inst *vinst = &adev->vcn.inst[instance_id]; + int r, i; + + mutex_lock(&vinst->engine_reset_mutex); + /* Stop the scheduler's work queue for the dec and enc rings if they are running. + * This ensures that no new tasks are submitted to the queues while + * the reset is in progress. + */ + drm_sched_wqueue_stop(&vinst->ring_dec.sched); + for (i = 0; i < vinst->num_enc_rings; i++) + drm_sched_wqueue_stop(&vinst->ring_enc[i].sched); + + /* Perform the VCN reset for the specified instance */ + r = vinst->reset(vinst); + if (r) + goto unlock; + r = amdgpu_ring_test_ring(&vinst->ring_dec); + if (r) + goto unlock; + for (i = 0; i < vinst->num_enc_rings; i++) { + r = amdgpu_ring_test_ring(&vinst->ring_enc[i]); + if (r) + goto unlock; + } + amdgpu_fence_driver_force_completion(&vinst->ring_dec); + for (i = 0; i < vinst->num_enc_rings; i++) + amdgpu_fence_driver_force_completion(&vinst->ring_enc[i]); + + /* Restart the scheduler's work queue for the dec and enc rings + * if they were stopped by this function. This allows new tasks + * to be submitted to the queues after the reset is complete. + */ + drm_sched_wqueue_start(&vinst->ring_dec.sched); + for (i = 0; i < vinst->num_enc_rings; i++) + drm_sched_wqueue_start(&vinst->ring_enc[i].sched); + +unlock: + mutex_unlock(&vinst->engine_reset_mutex); + + return r; +} + +/** + * amdgpu_vcn_ring_reset - Reset a VCN ring + * @ring: ring to reset + * @vmid: vmid of guilty job + * @timedout_fence: fence of timed out job + * + * This helper is for VCN blocks without unified queues because + * resetting the engine resets all queues in that case. With + * unified queues we have one queue per engine. + * Returns: 0 on success, or a negative error code on failure. + */ +int amdgpu_vcn_ring_reset(struct amdgpu_ring *ring, + unsigned int vmid, + struct amdgpu_fence *timedout_fence) +{ + struct amdgpu_device *adev = ring->adev; + + if (adev->vcn.inst[ring->me].using_unified_queue) + return -EINVAL; + + return amdgpu_vcn_reset_engine(adev, ring->me); +} |