drm/amdgpu/mes: implement removing mes gang

Free the mes gang and 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 74385e4b45c4fa913cd6f0cfd30b5916056095d8..07ddf7bf6a3b2a572f1595982ddd3e1f5a3590ec 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.c
@@ -416,3 +416,33 @@ clean_up:
        mutex_unlock(&adev->mes.mutex);
        return r;
 }
+
+int amdgpu_mes_remove_gang(struct amdgpu_device *adev, int gang_id)
+{
+       struct amdgpu_mes_gang *gang;
+
+       mutex_lock(&adev->mes.mutex);
+
+       gang = idr_find(&adev->mes.gang_id_idr, gang_id);
+       if (!gang) {
+               DRM_ERROR("gang id %d doesn't exist\n", gang_id);
+               mutex_unlock(&adev->mes.mutex);
+               return -EINVAL;
+       }
+
+       if (!list_empty(&gang->queue_list)) {
+               DRM_ERROR("queue list is not empty\n");
+               mutex_unlock(&adev->mes.mutex);
+               return -EBUSY;
+       }
+
+       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);
+
+       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 92139e362478838b6bcedba97fda11af762360af..a24394fa6ee9c2034e86e86a870e46ea35a1b79b 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mes.h
@@ -229,5 +229,6 @@ void amdgpu_mes_destroy_process(struct amdgpu_device *adev, int pasid);
 int amdgpu_mes_add_gang(struct amdgpu_device *adev, int pasid,
                        struct amdgpu_mes_gang_properties *gprops,
                        int *gang_id);
+int amdgpu_mes_remove_gang(struct amdgpu_device *adev, int gang_id);
 
 #endif /* __AMDGPU_MES_H__ */