drm/amdgpu/mes: implement removing mes queue

Remove the MES queue from MES scheduling and free its resources.

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 9f059c3..df0e542 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -655,3 +655,48 @@ clean_up_memory:
        mutex_unlock(&adev->mes.mutex);
        return r;
 }
+
+int amdgpu_mes_remove_hw_queue(struct amdgpu_device *adev, int queue_id)
+{
+       unsigned long flags;
+       struct amdgpu_mes_queue *queue;
+       struct amdgpu_mes_gang *gang;
+       struct mes_remove_queue_input queue_input;
+       int r;
+
+       mutex_lock(&adev->mes.mutex);
+
+       /* remove the mes gang from idr list */
+       spin_lock_irqsave(&adev->mes.queue_id_lock, flags);
+
+       queue = idr_find(&adev->mes.queue_id_idr, queue_id);
+       if (!queue) {
+               spin_unlock_irqrestore(&adev->mes.queue_id_lock, flags);
+               mutex_unlock(&adev->mes.mutex);
+               DRM_ERROR("queue id %d doesn't exist\n", queue_id);
+               return -EINVAL;
+       }
+
+       idr_remove(&adev->mes.queue_id_idr, queue_id);
+       spin_unlock_irqrestore(&adev->mes.queue_id_lock, flags);
+
+       DRM_DEBUG("try to remove queue, doorbell off = 0x%llx\n",
+                 queue->doorbell_off);
+
+       gang = queue->gang;
+       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_ERROR("failed to remove hardware queue, queue id = %d\n",
+                         queue_id);
+
+       amdgpu_mes_queue_free_mqd(queue);
+       list_del(&queue->list);
+       amdgpu_mes_queue_doorbell_free(adev, gang->process,
+                                      queue->doorbell_off);
+       kfree(queue);
+       mutex_unlock(&adev->mes.mutex);
+       return 0;
+}

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
index bae91b0..1174c8d 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -252,5 +252,6 @@ int amdgpu_mes_resume(struct amdgpu_device *adev);
 int amdgpu_mes_add_hw_queue(struct amdgpu_device *adev, int gang_id,
                            struct amdgpu_mes_queue_properties *qprops,
                            int *queue_id);
+int amdgpu_mes_remove_hw_queue(struct amdgpu_device *adev, int queue_id);
 
 #endif /* __AMDGPU_MES_H__ */