summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nvc0_fifo.c
blob: 50d68a7a13798f50347d05afeedbddd51262c91c (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
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
/*
 * Copyright 2010 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 "drmP.h"

#include "nouveau_drv.h"
#include "nouveau_mm.h"

static void nvc0_fifo_isr(struct drm_device *);

struct nvc0_fifo_priv {
	struct nouveau_gpuobj *playlist[2];
	int cur_playlist;
	struct nouveau_vma user_vma;
	int spoon_nr;
};

struct nvc0_fifo_chan {
	struct nouveau_gpuobj *user;
	struct nouveau_gpuobj *ramfc;
};

static void
nvc0_fifo_playlist_update(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nvc0_fifo_priv *priv = pfifo->priv;
	struct nouveau_gpuobj *cur;
	int i, p;

	cur = priv->playlist[priv->cur_playlist];
	priv->cur_playlist = !priv->cur_playlist;

	for (i = 0, p = 0; i < 128; i++) {
		if (!(nv_rd32(dev, 0x3004 + (i * 8)) & 1))
			continue;
		nv_wo32(cur, p + 0, i);
		nv_wo32(cur, p + 4, 0x00000004);
		p += 8;
	}
	pinstmem->flush(dev);

	nv_wr32(dev, 0x002270, cur->vinst >> 12);
	nv_wr32(dev, 0x002274, 0x01f00000 | (p >> 3));
	if (!nv_wait(dev, 0x00227c, 0x00100000, 0x00000000))
		NV_ERROR(dev, "PFIFO - playlist update failed\n");
}

void
nvc0_fifo_disable(struct drm_device *dev)
{
}

void
nvc0_fifo_enable(struct drm_device *dev)
{
}

bool
nvc0_fifo_reassign(struct drm_device *dev, bool enable)
{
	return false;
}

bool
nvc0_fifo_cache_pull(struct drm_device *dev, bool enable)
{
	return false;
}

int
nvc0_fifo_channel_id(struct drm_device *dev)
{
	return 127;
}

int
nvc0_fifo_create_context(struct nouveau_channel *chan)
{
	struct drm_device *dev = chan->dev;
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_instmem_engine *pinstmem = &dev_priv->engine.instmem;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nvc0_fifo_priv *priv = pfifo->priv;
	struct nvc0_fifo_chan *fifoch;
	u64 ib_virt = chan->pushbuf_base + chan->dma.ib_base * 4;
	int ret;

	chan->fifo_priv = kzalloc(sizeof(*fifoch), GFP_KERNEL);
	if (!chan->fifo_priv)
		return -ENOMEM;
	fifoch = chan->fifo_priv;

	/* allocate vram for control regs, map into polling area */
	ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000,
				 NVOBJ_FLAG_ZERO_ALLOC, &fifoch->user);
	if (ret)
		goto error;

	nouveau_vm_map_at(&priv->user_vma, chan->id * 0x1000,
			  *(struct nouveau_mem **)fifoch->user->node);

	chan->user = ioremap_wc(pci_resource_start(dev->pdev, 1) +
				priv->user_vma.offset + (chan->id * 0x1000),
				PAGE_SIZE);
	if (!chan->user) {
		ret = -ENOMEM;
		goto error;
	}

	/* ramfc */
	ret = nouveau_gpuobj_new_fake(dev, chan->ramin->pinst,
				      chan->ramin->vinst, 0x100,
				      NVOBJ_FLAG_ZERO_ALLOC, &fifoch->ramfc);
	if (ret)
		goto error;

	nv_wo32(fifoch->ramfc, 0x08, lower_32_bits(fifoch->user->vinst));
	nv_wo32(fifoch->ramfc, 0x0c, upper_32_bits(fifoch->user->vinst));
	nv_wo32(fifoch->ramfc, 0x10, 0x0000face);
	nv_wo32(fifoch->ramfc, 0x30, 0xfffff902);
	nv_wo32(fifoch->ramfc, 0x48, lower_32_bits(ib_virt));
	nv_wo32(fifoch->ramfc, 0x4c, drm_order(chan->dma.ib_max + 1) << 16 |
				   upper_32_bits(ib_virt));
	nv_wo32(fifoch->ramfc, 0x54, 0x00000002);
	nv_wo32(fifoch->ramfc, 0x84, 0x20400000);
	nv_wo32(fifoch->ramfc, 0x94, 0x30000001);
	nv_wo32(fifoch->ramfc, 0x9c, 0x00000100);
	nv_wo32(fifoch->ramfc, 0xa4, 0x1f1f1f1f);
	nv_wo32(fifoch->ramfc, 0xa8, 0x1f1f1f1f);
	nv_wo32(fifoch->ramfc, 0xac, 0x0000001f);
	nv_wo32(fifoch->ramfc, 0xb8, 0xf8000000);
	nv_wo32(fifoch->ramfc, 0xf8, 0x10003080); /* 0x002310 */
	nv_wo32(fifoch->ramfc, 0xfc, 0x10000010); /* 0x002350 */
	pinstmem->flush(dev);

	nv_wr32(dev, 0x003000 + (chan->id * 8), 0xc0000000 |
						(chan->ramin->vinst >> 12));
	nv_wr32(dev, 0x003004 + (chan->id * 8), 0x001f0001);
	nvc0_fifo_playlist_update(dev);
	return 0;

error:
	pfifo->destroy_context(chan);
	return ret;
}

void
nvc0_fifo_destroy_context(struct nouveau_channel *chan)
{
	struct drm_device *dev = chan->dev;
	struct nvc0_fifo_chan *fifoch;

	nv_mask(dev, 0x003004 + (chan->id * 8), 0x00000001, 0x00000000);
	nv_wr32(dev, 0x002634, chan->id);
	if (!nv_wait(dev, 0x0002634, 0xffffffff, chan->id))
		NV_WARN(dev, "0x2634 != chid: 0x%08x\n", nv_rd32(dev, 0x2634));

	nvc0_fifo_playlist_update(dev);

	nv_wr32(dev, 0x003000 + (chan->id * 8), 0x00000000);

	if (chan->user) {
		iounmap(chan->user);
		chan->user = NULL;
	}

	fifoch = chan->fifo_priv;
	chan->fifo_priv = NULL;
	if (!fifoch)
		return;

	nouveau_gpuobj_ref(NULL, &fifoch->ramfc);
	nouveau_gpuobj_ref(NULL, &fifoch->user);
	kfree(fifoch);
}

int
nvc0_fifo_load_context(struct nouveau_channel *chan)
{
	return 0;
}

int
nvc0_fifo_unload_context(struct drm_device *dev)
{
	int i;

	for (i = 0; i < 128; i++) {
		if (!(nv_rd32(dev, 0x003004 + (i * 8)) & 1))
			continue;

		nv_mask(dev, 0x003004 + (i * 8), 0x00000001, 0x00000000);
		nv_wr32(dev, 0x002634, i);
		if (!nv_wait(dev, 0x002634, 0xffffffff, i)) {
			NV_INFO(dev, "PFIFO: kick ch %d failed: 0x%08x\n",
				i, nv_rd32(dev, 0x002634));
			return -EBUSY;
		}
	}

	return 0;
}

static void
nvc0_fifo_destroy(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nvc0_fifo_priv *priv;

	priv = pfifo->priv;
	if (!priv)
		return;

	nouveau_vm_put(&priv->user_vma);
	nouveau_gpuobj_ref(NULL, &priv->playlist[1]);
	nouveau_gpuobj_ref(NULL, &priv->playlist[0]);
	kfree(priv);
}

void
nvc0_fifo_takedown(struct drm_device *dev)
{
	nv_wr32(dev, 0x002140, 0x00000000);
	nvc0_fifo_destroy(dev);
}

static int
nvc0_fifo_create(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nvc0_fifo_priv *priv;
	int ret;

	priv = kzalloc(sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;
	pfifo->priv = priv;

	ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000, 0,
				 &priv->playlist[0]);
	if (ret)
		goto error;

	ret = nouveau_gpuobj_new(dev, NULL, 0x1000, 0x1000, 0,
				 &priv->playlist[1]);
	if (ret)
		goto error;

	ret = nouveau_vm_get(dev_priv->bar1_vm, pfifo->channels * 0x1000,
			     12, NV_MEM_ACCESS_RW, &priv->user_vma);
	if (ret)
		goto error;

	nouveau_irq_register(dev, 8, nvc0_fifo_isr);
	NVOBJ_CLASS(dev, 0x506e, SW); /* nvsw */
	return 0;

error:
	nvc0_fifo_destroy(dev);
	return ret;
}

int
nvc0_fifo_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fifo_engine *pfifo = &dev_priv->engine.fifo;
	struct nouveau_channel *chan;
	struct nvc0_fifo_priv *priv;
	int ret, i;

	if (!pfifo->priv) {
		ret = nvc0_fifo_create(dev);
		if (ret)
			return ret;
	}
	priv = pfifo->priv;

	/* reset PFIFO, enable all available PSUBFIFO areas */
	nv_mask(dev, 0x000200, 0x00000100, 0x00000000);
	nv_mask(dev, 0x000200, 0x00000100, 0x00000100);
	nv_wr32(dev, 0x000204, 0xffffffff);
	nv_wr32(dev, 0x002204, 0xffffffff);

	priv->spoon_nr = hweight32(nv_rd32(dev, 0x002204));
	NV_DEBUG(dev, "PFIFO: %d subfifo(s)\n", priv->spoon_nr);

	/* assign engines to subfifos */
	if (priv->spoon_nr >= 3) {
		nv_wr32(dev, 0x002208, ~(1 << 0)); /* PGRAPH */
		nv_wr32(dev, 0x00220c, ~(1 << 1)); /* PVP */
		nv_wr32(dev, 0x002210, ~(1 << 1)); /* PPP */
		nv_wr32(dev, 0x002214, ~(1 << 1)); /* PBSP */
		nv_wr32(dev, 0x002218, ~(1 << 2)); /* PCE0 */
		nv_wr32(dev, 0x00221c, ~(1 << 1)); /* PCE1 */
	}

	/* PSUBFIFO[n] */
	for (i = 0; i < priv->spoon_nr; i++) {
		nv_mask(dev, 0x04013c + (i * 0x2000), 0x10000100, 0x00000000);
		nv_wr32(dev, 0x040108 + (i * 0x2000), 0xffffffff); /* INTR */
		nv_wr32(dev, 0x04010c + (i * 0x2000), 0xfffffeff); /* INTR_EN */
	}

	nv_mask(dev, 0x002200, 0x00000001, 0x00000001);
	nv_wr32(dev, 0x002254, 0x10000000 | priv->user_vma.offset >> 12);

	nv_wr32(dev, 0x002a00, 0xffffffff); /* clears PFIFO.INTR bit 30 */
	nv_wr32(dev, 0x002100, 0xffffffff);
	nv_wr32(dev, 0x002140, 0xbfffffff);

	/* restore PFIFO context table */
	for (i = 0; i < 128; i++) {
		chan = dev_priv->channels.ptr[i];
		if (!chan || !chan->fifo_priv)
			continue;

		nv_wr32(dev, 0x003000 + (i * 8), 0xc0000000 |
						 (chan->ramin->vinst >> 12));
		nv_wr32(dev, 0x003004 + (i * 8), 0x001f0001);
	}
	nvc0_fifo_playlist_update(dev);

	return 0;
}

struct nouveau_enum nvc0_fifo_fault_unit[] = {
	{ 0x00, "PGRAPH" },
	{ 0x03, "PEEPHOLE" },
	{ 0x04, "BAR1" },
	{ 0x05, "BAR3" },
	{ 0x07, "PFIFO" },
	{ 0x10, "PBSP" },
	{ 0x11, "PPPP" },
	{ 0x13, "PCOUNTER" },
	{ 0x14, "PVP" },
	{ 0x15, "PCOPY0" },
	{ 0x16, "PCOPY1" },
	{ 0x17, "PDAEMON" },
	{}
};

struct nouveau_enum nvc0_fifo_fault_reason[] = {
	{ 0x00, "PT_NOT_PRESENT" },
	{ 0x01, "PT_TOO_SHORT" },
	{ 0x02, "PAGE_NOT_PRESENT" },
	{ 0x03, "VM_LIMIT_EXCEEDED" },
	{ 0x04, "NO_CHANNEL" },
	{ 0x05, "PAGE_SYSTEM_ONLY" },
	{ 0x06, "PAGE_READ_ONLY" },
	{ 0x0a, "COMPRESSED_SYSRAM" },
	{ 0x0c, "INVALID_STORAGE_TYPE" },
	{}
};

struct nouveau_enum nvc0_fifo_fault_hubclient[] = {
	{ 0x01, "PCOPY0" },
	{ 0x02, "PCOPY1" },
	{ 0x04, "DISPATCH" },
	{ 0x05, "CTXCTL" },
	{ 0x06, "PFIFO" },
	{ 0x07, "BAR_READ" },
	{ 0x08, "BAR_WRITE" },
	{ 0x0b, "PVP" },
	{ 0x0c, "PPPP" },
	{ 0x0d, "PBSP" },
	{ 0x11, "PCOUNTER" },
	{ 0x12, "PDAEMON" },
	{ 0x14, "CCACHE" },
	{ 0x15, "CCACHE_POST" },
	{}
};

struct nouveau_enum nvc0_fifo_fault_gpcclient[] = {
	{ 0x01, "TEX" },
	{ 0x0c, "ESETUP" },
	{ 0x0e, "CTXCTL" },
	{ 0x0f, "PROP" },
	{}
};

struct nouveau_bitfield nvc0_fifo_subfifo_intr[] = {
/*	{ 0x00008000, "" }	seen with null ib push */
	{ 0x00200000, "ILLEGAL_MTHD" },
	{ 0x00800000, "EMPTY_SUBC" },
	{}
};

static void
nvc0_fifo_isr_vm_fault(struct drm_device *dev, int unit)
{
	u32 inst = nv_rd32(dev, 0x2800 + (unit * 0x10));
	u32 valo = nv_rd32(dev, 0x2804 + (unit * 0x10));
	u32 vahi = nv_rd32(dev, 0x2808 + (unit * 0x10));
	u32 stat = nv_rd32(dev, 0x280c + (unit * 0x10));
	u32 client = (stat & 0x00001f00) >> 8;

	NV_INFO(dev, "PFIFO: %s fault at 0x%010llx [",
		(stat & 0x00000080) ? "write" : "read", (u64)vahi << 32 | valo);
	nouveau_enum_print(nvc0_fifo_fault_reason, stat & 0x0000000f);
	printk("] from ");
	nouveau_enum_print(nvc0_fifo_fault_unit, unit);
	if (stat & 0x00000040) {
		printk("/");
		nouveau_enum_print(nvc0_fifo_fault_hubclient, client);
	} else {
		printk("/GPC%d/", (stat & 0x1f000000) >> 24);
		nouveau_enum_print(nvc0_fifo_fault_gpcclient, client);
	}
	printk(" on channel 0x%010llx\n", (u64)inst << 12);
}

static int
nvc0_fifo_page_flip(struct drm_device *dev, u32 chid)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_channel *chan = NULL;
	unsigned long flags;
	int ret = -EINVAL;

	spin_lock_irqsave(&dev_priv->channels.lock, flags);
	if (likely(chid >= 0 && chid < dev_priv->engine.fifo.channels)) {
		chan = dev_priv->channels.ptr[chid];
		if (likely(chan))
			ret = nouveau_finish_page_flip(chan, NULL);
	}
	spin_unlock_irqrestore(&dev_priv->channels.lock, flags);
	return ret;
}

static void
nvc0_fifo_isr_subfifo_intr(struct drm_device *dev, int unit)
{
	u32 stat = nv_rd32(dev, 0x040108 + (unit * 0x2000));
	u32 addr = nv_rd32(dev, 0x0400c0 + (unit * 0x2000));
	u32 data = nv_rd32(dev, 0x0400c4 + (unit * 0x2000));
	u32 chid = nv_rd32(dev, 0x040120 + (unit * 0x2000)) & 0x7f;
	u32 subc = (addr & 0x00070000);
	u32 mthd = (addr & 0x00003ffc);
	u32 show = stat;

	if (stat & 0x00200000) {
		if (mthd == 0x0054) {
			if (!nvc0_fifo_page_flip(dev, chid))
				show &= ~0x00200000;
		}
	}

	if (show) {
		NV_INFO(dev, "PFIFO%d:", unit);
		nouveau_bitfield_print(nvc0_fifo_subfifo_intr, show);
		NV_INFO(dev, "PFIFO%d: ch %d subc %d mthd 0x%04x data 0x%08x\n",
			     unit, chid, subc, mthd, data);
	}

	nv_wr32(dev, 0x0400c0 + (unit * 0x2000), 0x80600008);
	nv_wr32(dev, 0x040108 + (unit * 0x2000), stat);
}

static void
nvc0_fifo_isr(struct drm_device *dev)
{
	u32 stat = nv_rd32(dev, 0x002100);

	if (stat & 0x00000100) {
		NV_INFO(dev, "PFIFO: unknown status 0x00000100\n");
		nv_wr32(dev, 0x002100, 0x00000100);
		stat &= ~0x00000100;
	}

	if (stat & 0x10000000) {
		u32 units = nv_rd32(dev, 0x00259c);
		u32 u = units;

		while (u) {
			int i = ffs(u) - 1;
			nvc0_fifo_isr_vm_fault(dev, i);
			u &= ~(1 << i);
		}

		nv_wr32(dev, 0x00259c, units);
		stat &= ~0x10000000;
	}

	if (stat & 0x20000000) {
		u32 units = nv_rd32(dev, 0x0025a0);
		u32 u = units;

		while (u) {
			int i = ffs(u) - 1;
			nvc0_fifo_isr_subfifo_intr(dev, i);
			u &= ~(1 << i);
		}

		nv_wr32(dev, 0x0025a0, units);
		stat &= ~0x20000000;
	}

	if (stat & 0x40000000) {
		NV_INFO(dev, "PFIFO: unknown status 0x40000000\n");
		nv_mask(dev, 0x002a00, 0x00000000, 0x00000000);
		stat &= ~0x40000000;
	}

	if (stat) {
		NV_INFO(dev, "PFIFO: unhandled status 0x%08x\n", stat);
		nv_wr32(dev, 0x002100, stat);
		nv_wr32(dev, 0x002140, 0);
	}
}