Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / engine / disp / nv04.c
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 #include "priv.h"
25
26 #include <core/client.h>
27 #include <core/device.h>
28
29 #include <nvif/class.h>
30 #include <nvif/unpack.h>
31
32 struct nv04_disp_priv {
33         struct nvkm_disp base;
34 };
35
36 static int
37 nv04_disp_scanoutpos(struct nvkm_object *object, struct nv04_disp_priv *priv,
38                      void *data, u32 size, int head)
39 {
40         const u32 hoff = head * 0x2000;
41         union {
42                 struct nv04_disp_scanoutpos_v0 v0;
43         } *args = data;
44         u32 line;
45         int ret;
46
47         nv_ioctl(object, "disp scanoutpos size %d\n", size);
48         if (nvif_unpack(args->v0, 0, 0, false)) {
49                 nv_ioctl(object, "disp scanoutpos vers %d\n", args->v0.version);
50                 args->v0.vblanks = nv_rd32(priv, 0x680800 + hoff) & 0xffff;
51                 args->v0.vtotal  = nv_rd32(priv, 0x680804 + hoff) & 0xffff;
52                 args->v0.vblanke = args->v0.vtotal - 1;
53
54                 args->v0.hblanks = nv_rd32(priv, 0x680820 + hoff) & 0xffff;
55                 args->v0.htotal  = nv_rd32(priv, 0x680824 + hoff) & 0xffff;
56                 args->v0.hblanke = args->v0.htotal - 1;
57
58                 /*
59                  * If output is vga instead of digital then vtotal/htotal is
60                  * invalid so we have to give up and trigger the timestamping
61                  * fallback in the drm core.
62                  */
63                 if (!args->v0.vtotal || !args->v0.htotal)
64                         return -ENOTSUPP;
65
66                 args->v0.time[0] = ktime_to_ns(ktime_get());
67                 line = nv_rd32(priv, 0x600868 + hoff);
68                 args->v0.time[1] = ktime_to_ns(ktime_get());
69                 args->v0.hline = (line & 0xffff0000) >> 16;
70                 args->v0.vline = (line & 0x0000ffff);
71         } else
72                 return ret;
73
74         return 0;
75 }
76
77 static int
78 nv04_disp_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
79 {
80         union {
81                 struct nv04_disp_mthd_v0 v0;
82         } *args = data;
83         struct nv04_disp_priv *priv = (void *)object->engine;
84         int head, ret;
85
86         nv_ioctl(object, "disp mthd size %d\n", size);
87         if (nvif_unpack(args->v0, 0, 0, true)) {
88                 nv_ioctl(object, "disp mthd vers %d mthd %02x head %d\n",
89                          args->v0.version, args->v0.method, args->v0.head);
90                 mthd = args->v0.method;
91                 head = args->v0.head;
92         } else
93                 return ret;
94
95         if (head < 0 || head >= 2)
96                 return -ENXIO;
97
98         switch (mthd) {
99         case NV04_DISP_SCANOUTPOS:
100                 return nv04_disp_scanoutpos(object, priv, data, size, head);
101         default:
102                 break;
103         }
104
105         return -EINVAL;
106 }
107
108 static struct nvkm_ofuncs
109 nv04_disp_ofuncs = {
110         .ctor = _nvkm_object_ctor,
111         .dtor = nvkm_object_destroy,
112         .init = nvkm_object_init,
113         .fini = nvkm_object_fini,
114         .mthd = nv04_disp_mthd,
115         .ntfy = nvkm_disp_ntfy,
116 };
117
118 static struct nvkm_oclass
119 nv04_disp_sclass[] = {
120         { NV04_DISP, &nv04_disp_ofuncs },
121         {},
122 };
123
124 /*******************************************************************************
125  * Display engine implementation
126  ******************************************************************************/
127
128 static void
129 nv04_disp_vblank_init(struct nvkm_event *event, int type, int head)
130 {
131         struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
132         nv_wr32(disp, 0x600140 + (head * 0x2000) , 0x00000001);
133 }
134
135 static void
136 nv04_disp_vblank_fini(struct nvkm_event *event, int type, int head)
137 {
138         struct nvkm_disp *disp = container_of(event, typeof(*disp), vblank);
139         nv_wr32(disp, 0x600140 + (head * 0x2000) , 0x00000000);
140 }
141
142 static const struct nvkm_event_func
143 nv04_disp_vblank_func = {
144         .ctor = nvkm_disp_vblank_ctor,
145         .init = nv04_disp_vblank_init,
146         .fini = nv04_disp_vblank_fini,
147 };
148
149 static void
150 nv04_disp_intr(struct nvkm_subdev *subdev)
151 {
152         struct nv04_disp_priv *priv = (void *)subdev;
153         u32 crtc0 = nv_rd32(priv, 0x600100);
154         u32 crtc1 = nv_rd32(priv, 0x602100);
155         u32 pvideo;
156
157         if (crtc0 & 0x00000001) {
158                 nvkm_disp_vblank(&priv->base, 0);
159                 nv_wr32(priv, 0x600100, 0x00000001);
160         }
161
162         if (crtc1 & 0x00000001) {
163                 nvkm_disp_vblank(&priv->base, 1);
164                 nv_wr32(priv, 0x602100, 0x00000001);
165         }
166
167         if (nv_device(priv)->chipset >= 0x10 &&
168             nv_device(priv)->chipset <= 0x40) {
169                 pvideo = nv_rd32(priv, 0x8100);
170                 if (pvideo & ~0x11)
171                         nv_info(priv, "PVIDEO intr: %08x\n", pvideo);
172                 nv_wr32(priv, 0x8100, pvideo);
173         }
174 }
175
176 static int
177 nv04_disp_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
178                struct nvkm_oclass *oclass, void *data, u32 size,
179                struct nvkm_object **pobject)
180 {
181         struct nv04_disp_priv *priv;
182         int ret;
183
184         ret = nvkm_disp_create(parent, engine, oclass, 2, "DISPLAY",
185                                "display", &priv);
186         *pobject = nv_object(priv);
187         if (ret)
188                 return ret;
189
190         nv_engine(priv)->sclass = nv04_disp_sclass;
191         nv_subdev(priv)->intr = nv04_disp_intr;
192         return 0;
193 }
194
195 struct nvkm_oclass *
196 nv04_disp_oclass = &(struct nvkm_disp_impl) {
197         .base.handle = NV_ENGINE(DISP, 0x04),
198         .base.ofuncs = &(struct nvkm_ofuncs) {
199                 .ctor = nv04_disp_ctor,
200                 .dtor = _nvkm_disp_dtor,
201                 .init = _nvkm_disp_init,
202                 .fini = _nvkm_disp_fini,
203         },
204         .vblank = &nv04_disp_vblank_func,
205 }.base;