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 nv44_mpeg(p) container_of((p), struct nv44_mpeg, engine)
25#include "priv.h"
26
27#include <core/client.h>
28#include <core/gpuobj.h>
29#include <engine/fifo.h>
30
31#include <nvif/class.h>
32
33struct nv44_mpeg {
34	struct nvkm_engine engine;
35	struct list_head chan;
36};
37
38/*******************************************************************************
39 * PMPEG context
40 ******************************************************************************/
41#define nv44_mpeg_chan(p) container_of((p), struct nv44_mpeg_chan, object)
42
43struct nv44_mpeg_chan {
44	struct nvkm_object object;
45	struct nv44_mpeg *mpeg;
46	struct nvkm_fifo_chan *fifo;
47	struct list_head head;
48	u32 inst;
49};
50
51static int
52nv44_mpeg_chan_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent,
53		    int align, struct nvkm_gpuobj **pgpuobj)
54{
55	struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
56	int ret = nvkm_gpuobj_new(chan->object.engine->subdev.device, 264 * 4,
57				  align, true, parent, pgpuobj);
58	if (ret == 0) {
59		chan->inst = (*pgpuobj)->addr;
60		nvkm_kmap(*pgpuobj);
61		nvkm_wo32(*pgpuobj, 0x78, 0x02001ec1);
62		nvkm_done(*pgpuobj);
63	}
64	return ret;
65}
66
67static int
68nv44_mpeg_chan_fini(struct nvkm_object *object, bool suspend)
69{
70
71	struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
72	struct nv44_mpeg *mpeg = chan->mpeg;
73	struct nvkm_device *device = mpeg->engine.subdev.device;
74	u32 inst = 0x80000000 | (chan->inst >> 4);
75
76	nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000000);
77	if (nvkm_rd32(device, 0x00b318) == inst)
78		nvkm_mask(device, 0x00b318, 0x80000000, 0x00000000);
79	nvkm_mask(device, 0x00b32c, 0x00000001, 0x00000001);
80	return 0;
81}
82
83static void *
84nv44_mpeg_chan_dtor(struct nvkm_object *object)
85{
86	struct nv44_mpeg_chan *chan = nv44_mpeg_chan(object);
87	struct nv44_mpeg *mpeg = chan->mpeg;
88	unsigned long flags;
89	spin_lock_irqsave(&mpeg->engine.lock, flags);
90	list_del(&chan->head);
91	spin_unlock_irqrestore(&mpeg->engine.lock, flags);
92	return chan;
93}
94
95static const struct nvkm_object_func
96nv44_mpeg_chan = {
97	.dtor = nv44_mpeg_chan_dtor,
98	.fini = nv44_mpeg_chan_fini,
99	.bind = nv44_mpeg_chan_bind,
100};
101
102static int
103nv44_mpeg_chan_new(struct nvkm_fifo_chan *fifoch,
104		   const struct nvkm_oclass *oclass,
105		   struct nvkm_object **pobject)
106{
107	struct nv44_mpeg *mpeg = nv44_mpeg(oclass->engine);
108	struct nv44_mpeg_chan *chan;
109	unsigned long flags;
110
111	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
112		return -ENOMEM;
113	nvkm_object_ctor(&nv44_mpeg_chan, oclass, &chan->object);
114	chan->mpeg = mpeg;
115	chan->fifo = fifoch;
116	*pobject = &chan->object;
117
118	spin_lock_irqsave(&mpeg->engine.lock, flags);
119	list_add(&chan->head, &mpeg->chan);
120	spin_unlock_irqrestore(&mpeg->engine.lock, flags);
121	return 0;
122}
123
124/*******************************************************************************
125 * PMPEG engine/subdev functions
126 ******************************************************************************/
127
128static bool
129nv44_mpeg_mthd(struct nvkm_device *device, u32 mthd, u32 data)
130{
131	switch (mthd) {
132	case 0x190:
133	case 0x1a0:
134	case 0x1b0:
135		return nv40_mpeg_mthd_dma(device, mthd, data);
136	default:
137		break;
138	}
139	return false;
140}
141
142static void
143nv44_mpeg_intr(struct nvkm_engine *engine)
144{
145	struct nv44_mpeg *mpeg = nv44_mpeg(engine);
146	struct nvkm_subdev *subdev = &mpeg->engine.subdev;
147	struct nvkm_device *device = subdev->device;
148	struct nv44_mpeg_chan *temp, *chan = NULL;
149	unsigned long flags;
150	u32 inst = nvkm_rd32(device, 0x00b318) & 0x000fffff;
151	u32 stat = nvkm_rd32(device, 0x00b100);
152	u32 type = nvkm_rd32(device, 0x00b230);
153	u32 mthd = nvkm_rd32(device, 0x00b234);
154	u32 data = nvkm_rd32(device, 0x00b238);
155	u32 show = stat;
156
157	spin_lock_irqsave(&mpeg->engine.lock, flags);
158	list_for_each_entry(temp, &mpeg->chan, head) {
159		if (temp->inst >> 4 == inst) {
160			chan = temp;
161			list_del(&chan->head);
162			list_add(&chan->head, &mpeg->chan);
163			break;
164		}
165	}
166
167	if (stat & 0x01000000) {
168		/* happens on initial binding of the object */
169		if (type == 0x00000020 && mthd == 0x0000) {
170			nvkm_mask(device, 0x00b308, 0x00000000, 0x00000000);
171			show &= ~0x01000000;
172		}
173
174		if (type == 0x00000010) {
175			if (!nv44_mpeg_mthd(subdev->device, mthd, data))
176				show &= ~0x01000000;
177		}
178	}
179
180	nvkm_wr32(device, 0x00b100, stat);
181	nvkm_wr32(device, 0x00b230, 0x00000001);
182
183	if (show) {
184		nvkm_error(subdev, "ch %d [%08x %s] %08x %08x %08x %08x\n",
185			   chan ? chan->fifo->chid : -1, inst << 4,
186			   chan ? chan->object.client->name : "unknown",
187			   stat, type, mthd, data);
188	}
189
190	spin_unlock_irqrestore(&mpeg->engine.lock, flags);
191}
192
193static const struct nvkm_engine_func
194nv44_mpeg = {
195	.init = nv31_mpeg_init,
196	.intr = nv44_mpeg_intr,
197	.tile = nv31_mpeg_tile,
198	.fifo.cclass = nv44_mpeg_chan_new,
199	.sclass = {
200		{ -1, -1, NV31_MPEG, &nv31_mpeg_object },
201		{}
202	}
203};
204
205int
206nv44_mpeg_new(struct nvkm_device *device, int index, struct nvkm_engine **pmpeg)
207{
208	struct nv44_mpeg *mpeg;
209
210	if (!(mpeg = kzalloc(sizeof(*mpeg), GFP_KERNEL)))
211		return -ENOMEM;
212	INIT_LIST_HEAD(&mpeg->chan);
213	*pmpeg = &mpeg->engine;
214
215	return nvkm_engine_ctor(&nv44_mpeg, device, index, 0x00000002,
216				true, &mpeg->engine);
217}
218