1 /*
2 * Copyright 2012 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
23 */
24 #define nv04_disp_root(p) container_of((p), struct nv04_disp_root, object)
25 #include "priv.h"
26
27 #include <core/client.h>
28
29 #include <nvif/class.h>
30 #include <nvif/unpack.h>
31
32 struct nv04_disp_root {
33 struct nvkm_object object;
34 struct nvkm_disp *disp;
35 };
36
37 static int
nv04_disp_scanoutpos(struct nv04_disp_root * root,void * data,u32 size,int head)38 nv04_disp_scanoutpos(struct nv04_disp_root *root,
39 void *data, u32 size, int head)
40 {
41 struct nvkm_device *device = root->disp->engine.subdev.device;
42 struct nvkm_object *object = &root->object;
43 const u32 hoff = head * 0x2000;
44 union {
45 struct nv04_disp_scanoutpos_v0 v0;
46 } *args = data;
47 u32 line;
48 int ret;
49
50 nvif_ioctl(object, "disp scanoutpos size %d\n", size);
51 if (nvif_unpack(args->v0, 0, 0, false)) {
52 nvif_ioctl(object, "disp scanoutpos vers %d\n",
53 args->v0.version);
54 args->v0.vblanks = nvkm_rd32(device, 0x680800 + hoff) & 0xffff;
55 args->v0.vtotal = nvkm_rd32(device, 0x680804 + hoff) & 0xffff;
56 args->v0.vblanke = args->v0.vtotal - 1;
57
58 args->v0.hblanks = nvkm_rd32(device, 0x680820 + hoff) & 0xffff;
59 args->v0.htotal = nvkm_rd32(device, 0x680824 + hoff) & 0xffff;
60 args->v0.hblanke = args->v0.htotal - 1;
61
62 /*
63 * If output is vga instead of digital then vtotal/htotal is
64 * invalid so we have to give up and trigger the timestamping
65 * fallback in the drm core.
66 */
67 if (!args->v0.vtotal || !args->v0.htotal)
68 return -ENOTSUPP;
69
70 args->v0.time[0] = ktime_to_ns(ktime_get());
71 line = nvkm_rd32(device, 0x600868 + hoff);
72 args->v0.time[1] = ktime_to_ns(ktime_get());
73 args->v0.hline = (line & 0xffff0000) >> 16;
74 args->v0.vline = (line & 0x0000ffff);
75 } else
76 return ret;
77
78 return 0;
79 }
80
81 static int
nv04_disp_mthd(struct nvkm_object * object,u32 mthd,void * data,u32 size)82 nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
83 {
84 struct nv04_disp_root *root = nv04_disp_root(object);
85 union {
86 struct nv04_disp_mthd_v0 v0;
87 } *args = data;
88 int head, ret;
89
90 nvif_ioctl(object, "disp mthd size %d\n", size);
91 if (nvif_unpack(args->v0, 0, 0, true)) {
92 nvif_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
93 args->v0.version, args->v0.method, args->v0.head);
94 mthd = args->v0.method;
95 head = args->v0.head;
96 } else
97 return ret;
98
99 if (head < 0 || head >= 2)
100 return -ENXIO;
101
102 switch (mthd) {
103 case NV04_DISP_SCANOUTPOS:
104 return nv04_disp_scanoutpos(root, data, size, head);
105 default:
106 break;
107 }
108
109 return -EINVAL;
110 }
111
112 static const struct nvkm_object_func
113 nv04_disp_root = {
114 .mthd = nv04_disp_mthd,
115 .ntfy = nvkm_disp_ntfy,
116 };
117
118 static int
nv04_disp_root_new(struct nvkm_disp * disp,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)119 nv04_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
120 void *data, u32 size, struct nvkm_object **pobject)
121 {
122 struct nv04_disp_root *root;
123
124 if (!(root = kzalloc(sizeof(*root), GFP_KERNEL)))
125 return -ENOMEM;
126 root->disp = disp;
127 *pobject = &root->object;
128
129 nvkm_object_ctor(&nv04_disp_root, oclass, &root->object);
130 return 0;
131 }
132
133 const struct nvkm_disp_oclass
134 nv04_disp_root_oclass = {
135 .base.oclass = NV04_DISP,
136 .base.minver = -1,
137 .base.maxver = -1,
138 .ctor = nv04_disp_root_new,
139 };
140