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