1 /*
2  * Copyright © 2016 Intel Corporation
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice (including the next
12  * paragraph) shall be included in all copies or substantial portions of the
13  * Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21  * IN THE SOFTWARE.
22  *
23  */
24 
25 #include "mock_engine.h"
26 #include "mock_request.h"
27 
28 struct i915_request *
29 mock_request(struct intel_engine_cs *engine,
30 	     struct i915_gem_context *context,
31 	     unsigned long delay)
32 {
33 	struct i915_request *request;
34 	struct mock_request *mock;
35 
36 	/* NB the i915->requests slab cache is enlarged to fit mock_request */
37 	request = i915_request_alloc(engine, context);
38 	if (IS_ERR(request))
39 		return NULL;
40 
41 	mock = container_of(request, typeof(*mock), base);
42 	mock->delay = delay;
43 
44 	return &mock->base;
45 }
46 
47 bool mock_cancel_request(struct i915_request *request)
48 {
49 	struct mock_request *mock = container_of(request, typeof(*mock), base);
50 	struct mock_engine *engine =
51 		container_of(request->engine, typeof(*engine), base);
52 	bool was_queued;
53 
54 	spin_lock_irq(&engine->hw_lock);
55 	was_queued = !list_empty(&mock->link);
56 	list_del_init(&mock->link);
57 	spin_unlock_irq(&engine->hw_lock);
58 
59 	if (was_queued)
60 		i915_request_unsubmit(request);
61 
62 	return was_queued;
63 }
64