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
nvkm_bus_intr(struct nvkm_subdev * subdev)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
nvkm_bus_init(struct nvkm_subdev * subdev)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 *
nvkm_bus_dtor(struct nvkm_subdev * subdev)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
nvkm_bus_new_(const struct nvkm_bus_func * func,struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_bus ** pbus)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