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
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
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
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
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