nv44.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#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_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, enum nvkm_suspend_state 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_chan *fifoch, const struct nvkm_oclass *oclass,
104		   struct nvkm_object **pobject)
105{
106	struct nv44_mpeg *mpeg = nv44_mpeg(oclass->engine);
107	struct nv44_mpeg_chan *chan;
108	unsigned long flags;
109
110	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
111		return -ENOMEM;
112	nvkm_object_ctor(&nv44_mpeg_chan, oclass, &chan->object);
113	chan->mpeg = mpeg;
114	chan->fifo = fifoch;
115	*pobject = &chan->object;
116
117	spin_lock_irqsave(&mpeg->engine.lock, flags);
118	list_add(&chan->head, &mpeg->chan);
119	spin_unlock_irqrestore(&mpeg->engine.lock, flags);
120	return 0;
121}
122
123/*******************************************************************************
124 * PMPEG engine/subdev functions
125 ******************************************************************************/
126
127static bool
128nv44_mpeg_mthd(struct nvkm_device *device, u32 mthd, u32 data)
129{
130	switch (mthd) {
131	case 0x190:
132	case 0x1a0:
133	case 0x1b0:
134		return nv40_mpeg_mthd_dma(device, mthd, data);
135	default:
136		break;
137	}
138	return false;
139}
140
141static void
142nv44_mpeg_intr(struct nvkm_engine *engine)
143{
144	struct nv44_mpeg *mpeg = nv44_mpeg(engine);
145	struct nvkm_subdev *subdev = &mpeg->engine.subdev;
146	struct nvkm_device *device = subdev->device;
147	struct nv44_mpeg_chan *temp, *chan = NULL;
148	unsigned long flags;
149	u32 inst = nvkm_rd32(device, 0x00b318) & 0x000fffff;
150	u32 stat = nvkm_rd32(device, 0x00b100);
151	u32 type = nvkm_rd32(device, 0x00b230);
152	u32 mthd = nvkm_rd32(device, 0x00b234);
153	u32 data = nvkm_rd32(device, 0x00b238);
154	u32 show = stat;
155
156	spin_lock_irqsave(&mpeg->engine.lock, flags);
157	list_for_each_entry(temp, &mpeg->chan, head) {
158		if (temp->inst >> 4 == inst) {
159			chan = temp;
160			list_del(&chan->head);
161			list_add(&chan->head, &mpeg->chan);
162			break;
163		}
164	}
165
166	if (stat & 0x01000000) {
167		/* happens on initial binding of the object */
168		if (type == 0x00000020 && mthd == 0x0000) {
169			nvkm_mask(device, 0x00b308, 0x00000000, 0x00000000);
170			show &= ~0x01000000;
171		}
172
173		if (type == 0x00000010) {
174			if (nv44_mpeg_mthd(subdev->device, mthd, data))
175				show &= ~0x01000000;
176		}
177	}
178
179	nvkm_wr32(device, 0x00b100, stat);
180	nvkm_wr32(device, 0x00b230, 0x00000001);
181
182	if (show) {
183		nvkm_error(subdev, "ch %d [%08x %s] %08x %08x %08x %08x\n",
184			   chan ? chan->fifo->id : -1, inst << 4,
185			   chan ? chan->fifo->name : "unknown",
186			   stat, type, mthd, data);
187	}
188
189	spin_unlock_irqrestore(&mpeg->engine.lock, flags);
190}
191
192static const struct nvkm_engine_func
193nv44_mpeg = {
194	.init = nv31_mpeg_init,
195	.intr = nv44_mpeg_intr,
196	.tile = nv31_mpeg_tile,
197	.fifo.cclass = nv44_mpeg_chan_new,
198	.sclass = {
199		{ -1, -1, NV31_MPEG, &nv31_mpeg_object },
200		{}
201	}
202};
203
204int
205nv44_mpeg_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
206	      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, type, inst, true, &mpeg->engine);
216}