1 /*
2  * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
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 shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
20  * DEALINGS IN THE SOFTWARE.
21  */
22 
23 #include <engine/falcon.h>
24 #include <core/msgqueue.h>
25 #include "priv.h"
26 
27 static void
28 gm20b_pmu_recv(struct nvkm_pmu *pmu)
29 {
30 	if (!pmu->queue) {
31 		nvkm_warn(&pmu->subdev,
32 			  "recv function called while no firmware set!\n");
33 		return;
34 	}
35 
36 	nvkm_msgqueue_recv(pmu->queue);
37 }
38 
39 static const struct nvkm_pmu_func
40 gm20b_pmu = {
41 	.enabled = gf100_pmu_enabled,
42 	.intr = gt215_pmu_intr,
43 	.recv = gm20b_pmu_recv,
44 };
45 
46 int
47 gm20b_pmu_new(struct nvkm_device *device, int index, struct nvkm_pmu **ppmu)
48 {
49 	int ret;
50 
51 	ret = nvkm_pmu_new_(&gm20b_pmu, device, index, ppmu);
52 	if (ret)
53 		return ret;
54 
55 	return 0;
56 }
57