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 "nvsw.h"
25 #include "chan.h"
26
27 #include <nvif/if0004.h>
28
29 static int
nvkm_nvsw_uevent(struct nvkm_object * object,void * argv,u32 argc,struct nvkm_uevent * uevent)30 nvkm_nvsw_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
31 {
32 union nv04_nvsw_event_args *args = argv;
33
34 if (!uevent)
35 return 0;
36 if (argc != sizeof(args->vn))
37 return -ENOSYS;
38
39 return nvkm_uevent_add(uevent, &nvkm_nvsw(object)->chan->event, 0,
40 NVKM_SW_CHAN_EVENT_PAGE_FLIP, NULL);
41 }
42
43 static int
nvkm_nvsw_mthd(struct nvkm_object * object,u32 mthd,void * data,u32 size)44 nvkm_nvsw_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
45 {
46 struct nvkm_nvsw *nvsw = nvkm_nvsw(object);
47
48 if (nvsw->func->mthd)
49 return nvsw->func->mthd(nvsw, mthd, data, size);
50
51 return -ENODEV;
52 }
53
54 static const struct nvkm_object_func
55 nvkm_nvsw_ = {
56 .mthd = nvkm_nvsw_mthd,
57 .uevent = nvkm_nvsw_uevent,
58 };
59
60 int
nvkm_nvsw_new_(const struct nvkm_nvsw_func * func,struct nvkm_sw_chan * chan,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)61 nvkm_nvsw_new_(const struct nvkm_nvsw_func *func, struct nvkm_sw_chan *chan,
62 const struct nvkm_oclass *oclass, void *data, u32 size,
63 struct nvkm_object **pobject)
64 {
65 struct nvkm_nvsw *nvsw;
66
67 if (!(nvsw = kzalloc(sizeof(*nvsw), GFP_KERNEL)))
68 return -ENOMEM;
69 *pobject = &nvsw->object;
70
71 nvkm_object_ctor(&nvkm_nvsw_, oclass, &nvsw->object);
72 nvsw->func = func;
73 nvsw->chan = chan;
74 return 0;
75 }
76
77 static const struct nvkm_nvsw_func
78 nvkm_nvsw = {
79 };
80
81 int
nvkm_nvsw_new(struct nvkm_sw_chan * chan,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)82 nvkm_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
83 void *data, u32 size, struct nvkm_object **pobject)
84 {
85 return nvkm_nvsw_new_(&nvkm_nvsw, chan, oclass, data, size, pobject);
86 }
87