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
32struct nv04_disp_priv {
33	struct nvkm_disp base;
34};
35
36static int
37nv04_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
77static int
78nv04_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
108static struct nvkm_ofuncs
109nv04_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
118static struct nvkm_oclass
119nv04_disp_sclass[] = {
120	{ NV04_DISP, &nv04_disp_ofuncs },
121	{},
122};
123
124/*******************************************************************************
125 * Display engine implementation
126 ******************************************************************************/
127
128static void
129nv04_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
135static void
136nv04_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
142static const struct nvkm_event_func
143nv04_disp_vblank_func = {
144	.ctor = nvkm_disp_vblank_ctor,
145	.init = nv04_disp_vblank_init,
146	.fini = nv04_disp_vblank_fini,
147};
148
149static void
150nv04_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
176static int
177nv04_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
195struct nvkm_oclass *
196nv04_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;
206