1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright 2021 Red Hat Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#define nvkm_uhead(p) container_of((p), struct nvkm_head, object)
#include "head.h"
#include <core/event.h>
#include <nvif/if0013.h>
#include <nvif/event.h>
static int
nvkm_uhead_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent)
{
struct nvkm_head *head = nvkm_uhead(object);
union nvif_head_event_args *args = argv;
if (!uevent)
return 0;
if (argc != sizeof(args->vn))
return -ENOSYS;
return nvkm_uevent_add(uevent, &head->disp->vblank, head->id,
NVKM_DISP_HEAD_EVENT_VBLANK, NULL);
}
static int
nvkm_uhead_mthd_scanoutpos(struct nvkm_head *head, void *argv, u32 argc)
{
union nvif_head_scanoutpos_args *args = argv;
if (argc != sizeof(args->v0) || args->v0.version != 0)
return -ENOSYS;
head->func->state(head, &head->arm);
args->v0.vtotal = head->arm.vtotal;
args->v0.vblanks = head->arm.vblanks;
args->v0.vblanke = head->arm.vblanke;
args->v0.htotal = head->arm.htotal;
args->v0.hblanks = head->arm.hblanks;
args->v0.hblanke = head->arm.hblanke;
/* We don't support reading htotal/vtotal on pre-NV50 VGA,
* so we have to give up and trigger the timestamping
* fallback in the drm core.
*/
if (!args->v0.vtotal || !args->v0.htotal)
return -ENOTSUPP;
args->v0.time[0] = ktime_to_ns(ktime_get());
head->func->rgpos(head, &args->v0.hline, &args->v0.vline);
args->v0.time[1] = ktime_to_ns(ktime_get());
return 0;
}
static int
nvkm_uhead_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc)
{
struct nvkm_head *head = nvkm_uhead(object);
switch (mthd) {
case NVIF_HEAD_V0_SCANOUTPOS: return nvkm_uhead_mthd_scanoutpos(head, argv, argc);
default:
return -EINVAL;
}
}
static void *
nvkm_uhead_dtor(struct nvkm_object *object)
{
struct nvkm_head *head = nvkm_uhead(object);
struct nvkm_disp *disp = head->disp;
spin_lock(&disp->client.lock);
head->object.func = NULL;
spin_unlock(&disp->client.lock);
return NULL;
}
static const struct nvkm_object_func
nvkm_uhead = {
.dtor = nvkm_uhead_dtor,
.mthd = nvkm_uhead_mthd,
.uevent = nvkm_uhead_uevent,
};
int
nvkm_uhead_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, struct nvkm_object **pobject)
{
struct nvkm_disp *disp = nvkm_udisp(oclass->parent);
struct nvkm_head *head;
union nvif_head_args *args = argv;
int ret;
if (argc != sizeof(args->v0) || args->v0.version != 0)
return -ENOSYS;
if (!(head = nvkm_head_find(disp, args->v0.id)))
return -EINVAL;
ret = -EBUSY;
spin_lock(&disp->client.lock);
if (!head->object.func) {
nvkm_object_ctor(&nvkm_uhead, oclass, &head->object);
*pobject = &head->object;
ret = 0;
}
spin_unlock(&disp->client.lock);
return ret;
}
|
