aboutsummaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nv31_mpeg.c
blob: 818deb67588e9a10fae0ae1f970331e3df51278a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
/*
 * Copyright 2011 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */

#include <drm/drmP.h>
#include "nouveau_drv.h"
#include "nouveau_fifo.h"
#include "nouveau_ramht.h"

struct nv31_mpeg_engine {
	struct nouveau_exec_engine base;
	atomic_t refcount;
};


static int
nv31_mpeg_context_new(struct nouveau_channel *chan, int engine)
{
	struct nv31_mpeg_engine *pmpeg = nv_engine(chan->dev, engine);

	if (!atomic_add_unless(&pmpeg->refcount, 1, 1))
		return -EBUSY;

	chan->engctx[engine] = (void *)0xdeadcafe;
	return 0;
}

static void
nv31_mpeg_context_del(struct nouveau_channel *chan, int engine)
{
	struct nv31_mpeg_engine *pmpeg = nv_engine(chan->dev, engine);
	atomic_dec(&pmpeg->refcount);
	chan->engctx[engine] = NULL;
}

static int
nv40_mpeg_context_new(struct nouveau_channel *chan, int engine)
{
	struct drm_device *dev = chan->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_gpuobj *ctx = NULL;
	unsigned long flags;
	int ret;

	NV_DEBUG(dev, "ch%d\n", chan->id);

	ret = nouveau_gpuobj_new(dev, NULL, 264 * 4, 16, NVOBJ_FLAG_ZERO_ALLOC |
				 NVOBJ_FLAG_ZERO_FREE, &ctx);
	if (ret)
		return ret;

	nv_wo32(ctx, 0x78, 0x02001ec1);

	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
	nv_mask(dev, 0x002500, 0x00000001, 0x00000000);
	if ((nv_rd32(dev, 0x003204) & 0x1f) == chan->id)
		nv_wr32(dev, 0x00330c, ctx->pinst >> 4);
	nv_wo32(chan->ramfc, 0x54, ctx->pinst >> 4);
	nv_mask(dev, 0x002500, 0x00000001, 0x00000001);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);

	chan->engctx[engine] = ctx;
	return 0;
}

static void
nv40_mpeg_context_del(struct nouveau_channel *chan, int engine)
{
	struct drm_nouveau_private *dev_priv = chan->dev->dev_private;
	struct nouveau_gpuobj *ctx = chan->engctx[engine];
	struct drm_device *dev = chan->dev;
	unsigned long flags;
	u32 inst = 0x80000000 | (ctx->pinst >> 4);

	spin_lock_irqsave(&dev_priv->context_switch_lock, flags);
	nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
	if (nv_rd32(dev, 0x00b318) == inst)
		nv_mask(dev, 0x00b318, 0x80000000, 0x00000000);
	nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, flags);

	nouveau_gpuobj_ref(NULL, &ctx);
	chan->engctx[engine] = NULL;
}

static int
nv31_mpeg_object_new(struct nouveau_channel *chan, int engine,
		      u32 handle, u16 class)
{
	struct drm_device *dev = chan->dev;
	struct nouveau_gpuobj *obj = NULL;
	int ret;

	ret = nouveau_gpuobj_new(dev, chan, 20, 16, NVOBJ_FLAG_ZERO_ALLOC |
				 NVOBJ_FLAG_ZERO_FREE, &obj);
	if (ret)
		return ret;
	obj->engine = 2;
	obj->class  = class;

	nv_wo32(obj, 0x00, class);

	ret = nouveau_ramht_insert(chan, handle, obj);
	nouveau_gpuobj_ref(NULL, &obj);
	return ret;
}

static int
nv31_mpeg_init(struct drm_device *dev, int engine)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv31_mpeg_engine *pmpeg = nv_engine(dev, engine);
	int i;

	/* VPE init */
	nv_mask(dev, 0x000200, 0x00000002, 0x00000000);
	nv_mask(dev, 0x000200, 0x00000002, 0x00000002);
	nv_wr32(dev, 0x00b0e0, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */
	nv_wr32(dev, 0x00b0e8, 0x00000020); /* nvidia: rd 0x01, wr 0x20 */

	for (i = 0; i < dev_priv->engine.fb.num_tiles; i++)
		pmpeg->base.set_tile_region(dev, i);

	/* PMPEG init */
	nv_wr32(dev, 0x00b32c, 0x00000000);
	nv_wr32(dev, 0x00b314, 0x00000100);
	nv_wr32(dev, 0x00b220, nv44_graph_class(dev) ? 0x00000044 : 0x00000031);
	nv_wr32(dev, 0x00b300, 0x02001ec1);
	nv_mask(dev, 0x00b32c, 0x00000001, 0x00000001);

	nv_wr32(dev, 0x00b100, 0xffffffff);
	nv_wr32(dev, 0x00b140, 0xffffffff);

	if (!nv_wait(dev, 0x00b200, 0x00000001, 0x00000000)) {
		NV_ERROR(dev, "PMPEG init: 0x%08x\n", nv_rd32(dev, 0x00b200));
		return -EBUSY;
	}

	return 0;
}

static int
nv31_mpeg_fini(struct drm_device *dev, int engine, bool suspend)
{
	/*XXX: context save? */
	nv_mask(dev, 0x00b32c, 0x00000001, 0x00000000);
	nv_wr32(dev, 0x00b140, 0x00000000);
	return 0;
}

static int
nv31_mpeg_mthd_dma(struct nouveau_channel *chan, u32 class, u32 mthd, u32 data)
{
	struct drm_device *dev = chan->dev;
	u32 inst = data << 4;
	u32 dma0 = nv_ri32(dev, inst + 0);
	u32 dma1 = nv_ri32(dev, inst + 4);
	u32 dma2 = nv_ri32(dev, inst + 8);
	u32 base = (dma2 & 0xfffff000) | (dma0 >> 20);
	u32 size = dma1 + 1;

	/* only allow linear DMA objects */
	if (!(dma0 & 0x00002000))
		return -EINVAL;

	if (mthd == 0x0190) {
		/* DMA_CMD */
		nv_mask(dev, 0x00b300, 0x00030000, (dma0 & 0x00030000));
		nv_wr32(dev, 0x00b334, base);
		nv_wr32(dev, 0x00b324, size);
	} else
	if (mthd == 0x01a0) {
		/* DMA_DATA */
		nv_mask(dev, 0x00b300, 0x000c0000, (dma0 & 0x00030000) << 2);
		nv_wr32(dev, 0x00b360, base);
		nv_wr32(dev, 0x00b364, size);
	} else {
		/* DMA_IMAGE, VRAM only */
		if (dma0 & 0x000c0000)
			return -EINVAL;

		nv_wr32(dev, 0x00b370, base);
		nv_wr32(dev, 0x00b374, size);
	}

	return 0;
}

static int
nv31_mpeg_isr_chid(struct drm_device *dev, u32 inst)
{
	struct nouveau_fifo_priv *pfifo = nv_engine(dev, NVOBJ_ENGINE_FIFO);
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_gpuobj *ctx;
	unsigned long flags;
	int i;

	/* hardcode drm channel id on nv3x, so swmthd lookup works */
	if (dev_priv->card_type < NV_40)
		return 0;

	spin_lock_irqsave(&dev_priv->channels.lock, flags);
	for (i = 0; i < pfifo->channels; i++) {
		if (!dev_priv->channels.ptr[i])
			continue;

		ctx = dev_priv->channels.ptr[i]->engctx[NVOBJ_ENGINE_MPEG];
		if (ctx && ctx->pinst == inst)
			break;
	}
	spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
	return i;
}

static void
nv31_vpe_set_tile_region(struct drm_device *dev, int i)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_tile_reg *tile = &dev_priv->tile.reg[i];

	nv_wr32(dev, 0x00b008 + (i * 0x10), tile->pitch);
	nv_wr32(dev, 0x00b004 + (i * 0x10), tile->limit);
	nv_wr32(dev, 0x00b000 + (i * 0x10), tile->addr);
}

static void
nv31_mpeg_isr(struct drm_device *dev)
{
	u32 inst = (nv_rd32(dev, 0x00b318) & 0x000fffff) << 4;
	u32 chid = nv31_mpeg_isr_chid(dev, inst);
	u32 stat = nv_rd32(dev, 0x00b100);
	u32 type = nv_rd32(dev, 0x00b230);
	u32 mthd = nv_rd32(dev, 0x00b234);
	u32 data = nv_rd32(dev, 0x00b238);
	u32 show = stat;

	if (stat & 0x01000000) {
		/* happens on initial binding of the object */
		if (type == 0x00000020 && mthd == 0x0000) {
			nv_mask(dev, 0x00b308, 0x00000000, 0x00000000);
			show &= ~0x01000000;
		}

		if (type == 0x00000010) {
			if (!nouveau_gpuobj_mthd_call2(dev, chid, 0x3174, mthd, data))
				show &= ~0x01000000;
		}
	}

	nv_wr32(dev, 0x00b100, stat);
	nv_wr32(dev, 0x00b230, 0x00000001);

	if (show && nouveau_ratelimit()) {
		NV_INFO(dev, "PMPEG: Ch %d [0x%08x] 0x%08x 0x%08x 0x%08x 0x%08x\n",
			chid, inst, stat, type, mthd, data);
	}
}

static void
nv31_vpe_isr(struct drm_device *dev)
{
	if (nv_rd32(dev, 0x00b100))
		nv31_mpeg_isr(dev);

	if (nv_rd32(dev, 0x00b800)) {
		u32 stat = nv_rd32(dev, 0x00b800);
		NV_INFO(dev, "PMSRCH: 0x%08x\n", stat);
		nv_wr32(dev, 0xb800, stat);
	}
}

static void
nv31_mpeg_destroy(struct drm_device *dev, int engine)
{
	struct nv31_mpeg_engine *pmpeg = nv_engine(dev, engine);

	nouveau_irq_unregister(dev, 0);

	NVOBJ_ENGINE_DEL(dev, MPEG);
	kfree(pmpeg);
}

int
nv31_mpeg_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nv31_mpeg_engine *pmpeg;

	pmpeg = kzalloc(sizeof(*pmpeg), GFP_KERNEL);
	if (!pmpeg)
		return -ENOMEM;
	atomic_set(&pmpeg->refcount, 0);

	pmpeg->base.destroy = nv31_mpeg_destroy;
	pmpeg->base.init = nv31_mpeg_init;
	pmpeg->base.fini = nv31_mpeg_fini;
	if (dev_priv->card_type < NV_40) {
		pmpeg->base.context_new = nv31_mpeg_context_new;
		pmpeg->base.context_del = nv31_mpeg_context_del;
	} else {
		pmpeg->base.context_new = nv40_mpeg_context_new;
		pmpeg->base.context_del = nv40_mpeg_context_del;
	}
	pmpeg->base.object_new = nv31_mpeg_object_new;

	/* ISR vector, PMC_ENABLE bit,  and TILE regs are shared between
	 * all VPE engines, for this driver's purposes the PMPEG engine
	 * will be treated as the "master" and handle the global VPE
	 * bits too
	 */
	pmpeg->base.set_tile_region = nv31_vpe_set_tile_region;
	nouveau_irq_register(dev, 0, nv31_vpe_isr);

	NVOBJ_ENGINE_ADD(dev, MPEG, &pmpeg->base);
	NVOBJ_CLASS(dev, 0x3174, MPEG);
	NVOBJ_MTHD (dev, 0x3174, 0x0190, nv31_mpeg_mthd_dma);
	NVOBJ_MTHD (dev, 0x3174, 0x01a0, nv31_mpeg_mthd_dma);
	NVOBJ_MTHD (dev, 0x3174, 0x01b0, nv31_mpeg_mthd_dma);

#if 0
	NVOBJ_ENGINE_ADD(dev, ME, &pme->base);
	NVOBJ_CLASS(dev, 0x4075, ME);
#endif
	return 0;

}