1 /*
2  * Copyright 2015 Red Hat Inc.
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 COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Ben Skeggs <bskeggs@redhat.com>
23  */
24 #include "priv.h"
25 
26 static void
27 nvkm_bus_intr(struct nvkm_subdev *subdev)
28 {
29 	struct nvkm_bus *bus = nvkm_bus(subdev);
30 	bus->func->intr(bus);
31 }
32 
33 static int
34 nvkm_bus_init(struct nvkm_subdev *subdev)
35 {
36 	struct nvkm_bus *bus = nvkm_bus(subdev);
37 	bus->func->init(bus);
38 	return 0;
39 }
40 
41 static void *
42 nvkm_bus_dtor(struct nvkm_subdev *subdev)
43 {
44 	return nvkm_bus(subdev);
45 }
46 
47 static const struct nvkm_subdev_func
48 nvkm_bus = {
49 	.dtor = nvkm_bus_dtor,
50 	.init = nvkm_bus_init,
51 	.intr = nvkm_bus_intr,
52 };
53 
54 int
55 nvkm_bus_new_(const struct nvkm_bus_func *func, struct nvkm_device *device,
56 	      enum nvkm_subdev_type type, int inst, struct nvkm_bus **pbus)
57 {
58 	struct nvkm_bus *bus;
59 	if (!(bus = *pbus = kzalloc(sizeof(*bus), GFP_KERNEL)))
60 		return -ENOMEM;
61 	nvkm_subdev_ctor(&nvkm_bus, device, type, inst, &bus->subdev);
62 	bus->func = func;
63 	return 0;
64 }
65