drm/amdgpu/mes: implement destroying mes process

Destroy the mes process, which free resources of the process.

Signed-off-by: Jack Xiao <Jack.Xiao@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
index 55005a5..05e2763 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -291,3 +291,61 @@ clean_up_memory:
        mutex_unlock(&adev->mes.mutex);
        return r;
 }
+
+void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid)
+{
+       struct amdgpu_mes_process *process;
+       struct amdgpu_mes_gang *gang, *tmp1;
+       struct amdgpu_mes_queue *queue, *tmp2;
+       struct mes_remove_queue_input queue_input;
+       unsigned long flags;
+       int r;
+
+       mutex_lock(&adev->mes.mutex);
+
+       process = idr_find(&adev->mes.pasid_idr, pasid);
+       if (!process) {
+               DRM_WARN("pasid %d doesn't exist\n", pasid);
+               mutex_unlock(&adev->mes.mutex);
+               return;
+       }
+
+       /* free all gangs in the process */
+       list_for_each_entry_safe(gang, tmp1, &process->gang_list, list) {
+               /* free all queues in the gang */
+               list_for_each_entry_safe(queue, tmp2, &gang->queue_list, list) {
+                       spin_lock_irqsave(&adev->mes.queue_id_lock, flags);
+                       idr_remove(&adev->mes.queue_id_idr, queue->queue_id);
+                       spin_unlock_irqrestore(&adev->mes.queue_id_lock, flags);
+
+                       queue_input.doorbell_offset = queue->doorbell_off;
+                       queue_input.gang_context_addr = gang->gang_ctx_gpu_addr;
+
+                       r = adev->mes.funcs->remove_hw_queue(&adev->mes,
+                                                            &queue_input);
+                       if (r)
+                               DRM_WARN("failed to remove hardware queue\n");
+
+                       list_del(&queue->list);
+                       kfree(queue);
+               }
+
+               idr_remove(&adev->mes.gang_id_idr, gang->gang_id);
+               amdgpu_bo_free_kernel(&gang->gang_ctx_bo,
+                                     &gang->gang_ctx_gpu_addr,
+                                     &gang->gang_ctx_cpu_ptr);
+               list_del(&gang->list);
+               kfree(gang);
+       }
+
+       amdgpu_mes_free_process_doorbells(adev, process);
+
+       idr_remove(&adev->mes.pasid_idr, pasid);
+       amdgpu_bo_free_kernel(&process->proc_ctx_bo,
+                             &process->proc_ctx_gpu_addr,
+                             &process->proc_ctx_cpu_ptr);
+       kfree(process->doorbell_bitmap);
+       kfree(process);
+
+       mutex_unlock(&adev->mes.mutex);
+}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
index 455f0cb..6f44a81 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -216,5 +216,6 @@ void amdgpu_mes_fini(struct amdgpu_device *adev);
 
 int amdgpu_mes_create_process(struct amdgpu_device *adev, int pasid,
                              struct amdgpu_vm *vm);
+void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid);
 
 #endif /* __AMDGPU_MES_H__ */