summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nouveau_mem.c
blob: 5b498ea32e1413091bb1fb4e851937c5fbdbc72f (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
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
/*
 * Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
 * Copyright 2005 Stephane Marchesin
 *
 * The Weather Channel (TM) funded Tungsten Graphics to develop the
 * initial release of the Radeon 8500 driver under the XFree86 license.
 * This notice must be preserved.
 *
 * 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 (including the next
 * paragraph) 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 AUTHORS AND/OR THEIR SUPPLIERS 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 <bskeggs@redhat.com>
 *    Roy Spliet <r.spliet@student.tudelft.nl>
 */


#include "drmP.h"
#include "drm.h"
#include "drm_sarea.h"

#include "nouveau_drv.h"
#include "nouveau_pm.h"
#include "nouveau_mm.h"
#include "nouveau_vm.h"
#include "nouveau_fifo.h"
#include "nouveau_fence.h"

/*
 * NV10-NV40 tiling helpers
 */

static void
nv10_mem_update_tile_region(struct drm_device *dev,
			    struct nouveau_tile_reg *tile, uint32_t addr,
			    uint32_t size, uint32_t pitch, uint32_t flags)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
	int i = tile - dev_priv->tile.reg, j;
	unsigned long save;

	nouveau_fence_unref(&tile->fence);

	if (tile->pitch)
		pfb->free_tile_region(dev, i);

	if (pitch)
		pfb->init_tile_region(dev, i, addr, size, pitch, flags);

	spin_lock_irqsave(&dev_priv->context_switch_lock, save);
	nv_wr32(dev, NV03_PFIFO_CACHES, 0);
	nv04_fifo_cache_pull(dev, false);

	nouveau_wait_for_idle(dev);

	pfb->set_tile_region(dev, i);
	for (j = 0; j < NVOBJ_ENGINE_NR; j++) {
		if (dev_priv->eng[j] && dev_priv->eng[j]->set_tile_region)
			dev_priv->eng[j]->set_tile_region(dev, i);
	}

	nv04_fifo_cache_pull(dev, true);
	nv_wr32(dev, NV03_PFIFO_CACHES, 1);
	spin_unlock_irqrestore(&dev_priv->context_switch_lock, save);
}

static struct nouveau_tile_reg *
nv10_mem_get_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];

	spin_lock(&dev_priv->tile.lock);

	if (!tile->used &&
	    (!tile->fence || nouveau_fence_done(tile->fence)))
		tile->used = true;
	else
		tile = NULL;

	spin_unlock(&dev_priv->tile.lock);
	return tile;
}

void
nv10_mem_put_tile_region(struct drm_device *dev, struct nouveau_tile_reg *tile,
			 struct nouveau_fence *fence)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	if (tile) {
		spin_lock(&dev_priv->tile.lock);
		if (fence) {
			/* Mark it as pending. */
			tile->fence = fence;
			nouveau_fence_ref(fence);
		}

		tile->used = false;
		spin_unlock(&dev_priv->tile.lock);
	}
}

struct nouveau_tile_reg *
nv10_mem_set_tiling(struct drm_device *dev, uint32_t addr, uint32_t size,
		    uint32_t pitch, uint32_t flags)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_fb_engine *pfb = &dev_priv->engine.fb;
	struct nouveau_tile_reg *tile, *found = NULL;
	int i;

	for (i = 0; i < pfb->num_tiles; i++) {
		tile = nv10_mem_get_tile_region(dev, i);

		if (pitch && !found) {
			found = tile;
			continue;

		} else if (tile && tile->pitch) {
			/* Kill an unused tile region. */
			nv10_mem_update_tile_region(dev, tile, 0, 0, 0, 0);
		}

		nv10_mem_put_tile_region(dev, tile, NULL);
	}

	if (found)
		nv10_mem_update_tile_region(dev, found, addr, size,
					    pitch, flags);
	return found;
}

/*
 * Cleanup everything
 */
void
nouveau_mem_vram_fini(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	ttm_bo_device_release(&dev_priv->ttm.bdev);

	nouveau_ttm_global_release(dev_priv);

	if (dev_priv->fb_mtrr >= 0) {
		drm_mtrr_del(dev_priv->fb_mtrr,
			     pci_resource_start(dev->pdev, 1),
			     pci_resource_len(dev->pdev, 1), DRM_MTRR_WC);
		dev_priv->fb_mtrr = -1;
	}
}

void
nouveau_mem_gart_fini(struct drm_device *dev)
{
	nouveau_sgdma_takedown(dev);

	if (drm_core_has_AGP(dev) && dev->agp) {
		struct drm_agp_mem *entry, *tempe;

		/* Remove AGP resources, but leave dev->agp
		   intact until drv_cleanup is called. */
		list_for_each_entry_safe(entry, tempe, &dev->agp->memory, head) {
			if (entry->bound)
				drm_unbind_agp(entry->memory);
			drm_free_agp(entry->memory, entry->pages);
			kfree(entry);
		}
		INIT_LIST_HEAD(&dev->agp->memory);

		if (dev->agp->acquired)
			drm_agp_release(dev);

		dev->agp->acquired = 0;
		dev->agp->enabled = 0;
	}
}

bool
nouveau_mem_flags_valid(struct drm_device *dev, u32 tile_flags)
{
	if (!(tile_flags & NOUVEAU_GEM_TILE_LAYOUT_MASK))
		return true;

	return false;
}

#if __OS_HAS_AGP
static unsigned long
get_agp_mode(struct drm_device *dev, unsigned long mode)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;

	/*
	 * FW seems to be broken on nv18, it makes the card lock up
	 * randomly.
	 */
	if (dev_priv->chipset == 0x18)
		mode &= ~PCI_AGP_COMMAND_FW;

	/*
	 * AGP mode set in the command line.
	 */
	if (nouveau_agpmode > 0) {
		bool agpv3 = mode & 0x8;
		int rate = agpv3 ? nouveau_agpmode / 4 : nouveau_agpmode;

		mode = (mode & ~0x7) | (rate & 0x7);
	}

	return mode;
}
#endif

int
nouveau_mem_reset_agp(struct drm_device *dev)
{
#if __OS_HAS_AGP
	uint32_t saved_pci_nv_1, pmc_enable;
	int ret;

	/* First of all, disable fast writes, otherwise if it's
	 * already enabled in the AGP bridge and we disable the card's
	 * AGP controller we might be locking ourselves out of it. */
	if ((nv_rd32(dev, NV04_PBUS_PCI_NV_19) |
	     dev->agp->mode) & PCI_AGP_COMMAND_FW) {
		struct drm_agp_info info;
		struct drm_agp_mode mode;

		ret = drm_agp_info(dev, &info);
		if (ret)
			return ret;

		mode.mode = get_agp_mode(dev, info.mode) & ~PCI_AGP_COMMAND_FW;
		ret = drm_agp_enable(dev, mode);
		if (ret)
			return ret;
	}

	saved_pci_nv_1 = nv_rd32(dev, NV04_PBUS_PCI_NV_1);

	/* clear busmaster bit */
	nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1 & ~0x4);
	/* disable AGP */
	nv_wr32(dev, NV04_PBUS_PCI_NV_19, 0);

	/* power cycle pgraph, if enabled */
	pmc_enable = nv_rd32(dev, NV03_PMC_ENABLE);
	if (pmc_enable & NV_PMC_ENABLE_PGRAPH) {
		nv_wr32(dev, NV03_PMC_ENABLE,
				pmc_enable & ~NV_PMC_ENABLE_PGRAPH);
		nv_wr32(dev, NV03_PMC_ENABLE, nv_rd32(dev, NV03_PMC_ENABLE) |
				NV_PMC_ENABLE_PGRAPH);
	}

	/* and restore (gives effect of resetting AGP) */
	nv_wr32(dev, NV04_PBUS_PCI_NV_1, saved_pci_nv_1);
#endif

	return 0;
}

int
nouveau_mem_init_agp(struct drm_device *dev)
{
#if __OS_HAS_AGP
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct drm_agp_info info;
	struct drm_agp_mode mode;
	int ret;

	if (!dev->agp->acquired) {
		ret = drm_agp_acquire(dev);
		if (ret) {
			NV_ERROR(dev, "Unable to acquire AGP: %d\n", ret);
			return ret;
		}
	}

	nouveau_mem_reset_agp(dev);

	ret = drm_agp_info(dev, &info);
	if (ret) {
		NV_ERROR(dev, "Unable to get AGP info: %d\n", ret);
		return ret;
	}

	/* see agp.h for the AGPSTAT_* modes available */
	mode.mode = get_agp_mode(dev, info.mode);
	ret = drm_agp_enable(dev, mode);
	if (ret) {
		NV_ERROR(dev, "Unable to enable AGP: %d\n", ret);
		return ret;
	}

	dev_priv->gart_info.type	= NOUVEAU_GART_AGP;
	dev_priv->gart_info.aper_base	= info.aperture_base;
	dev_priv->gart_info.aper_size	= info.aperture_size;
#endif
	return 0;
}

static const struct vram_types {
	int value;
	const char *name;
} vram_type_map[] = {
	{ NV_MEM_TYPE_STOLEN , "stolen system memory" },
	{ NV_MEM_TYPE_SGRAM  , "SGRAM" },
	{ NV_MEM_TYPE_SDRAM  , "SDRAM" },
	{ NV_MEM_TYPE_DDR1   , "DDR1" },
	{ NV_MEM_TYPE_DDR2   , "DDR2" },
	{ NV_MEM_TYPE_DDR3   , "DDR3" },
	{ NV_MEM_TYPE_GDDR2  , "GDDR2" },
	{ NV_MEM_TYPE_GDDR3  , "GDDR3" },
	{ NV_MEM_TYPE_GDDR4  , "GDDR4" },
	{ NV_MEM_TYPE_GDDR5  , "GDDR5" },
	{ NV_MEM_TYPE_UNKNOWN, "unknown type" }
};

int
nouveau_mem_vram_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
	const struct vram_types *vram_type;
	int ret, dma_bits;

	dma_bits = 32;
	if (dev_priv->card_type >= NV_50) {
		if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(40)))
			dma_bits = 40;
	} else
	if (0 && pci_is_pcie(dev->pdev) &&
	    dev_priv->chipset  > 0x40 &&
	    dev_priv->chipset != 0x45) {
		if (pci_dma_supported(dev->pdev, DMA_BIT_MASK(39)))
			dma_bits = 39;
	}

	ret = pci_set_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
	if (ret)
		return ret;
	ret = pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(dma_bits));
	if (ret) {
		/* Reset to default value. */
		pci_set_consistent_dma_mask(dev->pdev, DMA_BIT_MASK(32));
	}


	ret = nouveau_ttm_global_init(dev_priv);
	if (ret)
		return ret;

	ret = ttm_bo_device_init(&dev_priv->ttm.bdev,
				 dev_priv->ttm.bo_global_ref.ref.object,
				 &nouveau_bo_driver, DRM_FILE_PAGE_OFFSET,
				 dma_bits <= 32 ? true : false);
	if (ret) {
		NV_ERROR(dev, "Error initialising bo driver: %d\n", ret);
		return ret;
	}

	vram_type = vram_type_map;
	while (vram_type->value != NV_MEM_TYPE_UNKNOWN) {
		if (nouveau_vram_type) {
			if (!strcasecmp(nouveau_vram_type, vram_type->name))
				break;
			dev_priv->vram_type = vram_type->value;
		} else {
			if (vram_type->value == dev_priv->vram_type)
				break;
		}
		vram_type++;
	}

	NV_INFO(dev, "Detected %dMiB VRAM (%s)\n",
		(int)(dev_priv->vram_size >> 20), vram_type->name);
	if (dev_priv->vram_sys_base) {
		NV_INFO(dev, "Stolen system memory at: 0x%010llx\n",
			dev_priv->vram_sys_base);
	}

	dev_priv->fb_available_size = dev_priv->vram_size;
	dev_priv->fb_mappable_pages = dev_priv->fb_available_size;
	if (dev_priv->fb_mappable_pages > pci_resource_len(dev->pdev, 1))
		dev_priv->fb_mappable_pages = pci_resource_len(dev->pdev, 1);
	dev_priv->fb_mappable_pages >>= PAGE_SHIFT;

	dev_priv->fb_available_size -= dev_priv->ramin_rsvd_vram;
	dev_priv->fb_aper_free = dev_priv->fb_available_size;

	/* mappable vram */
	ret = ttm_bo_init_mm(bdev, TTM_PL_VRAM,
			     dev_priv->fb_available_size >> PAGE_SHIFT);
	if (ret) {
		NV_ERROR(dev, "Failed VRAM mm init: %d\n", ret);
		return ret;
	}

	if (dev_priv->card_type < NV_50) {
		ret = nouveau_bo_new(dev, 256*1024, 0, TTM_PL_FLAG_VRAM,
				     0, 0, NULL, &dev_priv->vga_ram);
		if (ret == 0)
			ret = nouveau_bo_pin(dev_priv->vga_ram,
					     TTM_PL_FLAG_VRAM);

		if (ret) {
			NV_WARN(dev, "failed to reserve VGA memory\n");
			nouveau_bo_ref(NULL, &dev_priv->vga_ram);
		}
	}

	dev_priv->fb_mtrr = drm_mtrr_add(pci_resource_start(dev->pdev, 1),
					 pci_resource_len(dev->pdev, 1),
					 DRM_MTRR_WC);
	return 0;
}

int
nouveau_mem_gart_init(struct drm_device *dev)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct ttm_bo_device *bdev = &dev_priv->ttm.bdev;
	int ret;

	dev_priv->gart_info.type = NOUVEAU_GART_NONE;

#if !defined(__powerpc__) && !defined(__ia64__)
	if (drm_pci_device_is_agp(dev) && dev->agp && nouveau_agpmode) {
		ret = nouveau_mem_init_agp(dev);
		if (ret)
			NV_ERROR(dev, "Error initialising AGP: %d\n", ret);
	}
#endif

	if (dev_priv->gart_info.type == NOUVEAU_GART_NONE) {
		ret = nouveau_sgdma_init(dev);
		if (ret) {
			NV_ERROR(dev, "Error initialising PCI(E): %d\n", ret);
			return ret;
		}
	}

	NV_INFO(dev, "%d MiB GART (aperture)\n",
		(int)(dev_priv->gart_info.aper_size >> 20));
	dev_priv->gart_info.aper_free = dev_priv->gart_info.aper_size;

	ret = ttm_bo_init_mm(bdev, TTM_PL_TT,
			     dev_priv->gart_info.aper_size >> PAGE_SHIFT);
	if (ret) {
		NV_ERROR(dev, "Failed TT mm init: %d\n", ret);
		return ret;
	}

	return 0;
}

static int
nv40_mem_timing_calc(struct drm_device *dev, u32 freq,
		     struct nouveau_pm_tbl_entry *e, u8 len,
		     struct nouveau_pm_memtiming *boot,
		     struct nouveau_pm_memtiming *t)
{
	t->reg[0] = (e->tRP << 24 | e->tRAS << 16 | e->tRFC << 8 | e->tRC);

	/* XXX: I don't trust the -1's and +1's... they must come
	 *      from somewhere! */
	t->reg[1] = (e->tWR + 2 + (t->tCWL - 1)) << 24 |
		    1 << 16 |
		    (e->tWTR + 2 + (t->tCWL - 1)) << 8 |
		    (e->tCL + 2 - (t->tCWL - 1));

	t->reg[2] = 0x20200000 |
		    ((t->tCWL - 1) << 24 |
		     e->tRRD << 16 |
		     e->tRCDWR << 8 |
		     e->tRCDRD);

	NV_DEBUG(dev, "Entry %d: 220: %08x %08x %08x\n", t->id,
		 t->reg[0], t->reg[1], t->reg[2]);
	return 0;
}

static int
nv50_mem_timing_calc(struct drm_device *dev, u32 freq,
		     struct nouveau_pm_tbl_entry *e, u8 len,
		     struct nouveau_pm_memtiming *boot,
		     struct nouveau_pm_memtiming *t)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct bit_entry P;
	uint8_t unk18 = 1, unk20 = 0, unk21 = 0, tmp7_3;

	if (bit_table(dev, 'P', &P))
		return -EINVAL;

	switch (min(len, (u8) 22)) {
	case 22:
		unk21 = e->tUNK_21;
	case 21:
		unk20 = e->tUNK_20;
	case 20:
		if (e->tCWL > 0)
			t->tCWL = e->tCWL;
	case 19:
		unk18 = e->tUNK_18;
		break;
	}

	t->reg[0] = (e->tRP << 24 | e->tRAS << 16 | e->tRFC << 8 | e->tRC);

	t->reg[1] = (e->tWR + 2 + (t->tCWL - 1)) << 24 |
				max(unk18, (u8) 1) << 16 |
				(e->tWTR + 2 + (t->tCWL - 1)) << 8;

	t->reg[2] = ((t->tCWL - 1) << 24 |
		    e->tRRD << 16 |
		    e->tRCDWR << 8 |
		    e->tRCDRD);

	t->reg[4] = e->tUNK_13 << 8  | e->tUNK_13;

	t->reg[5] = (e->tRFC << 24 | max(e->tRCDRD, e->tRCDWR) << 16 | e->tRP);

	t->reg[8] = boot->reg[8] & 0xffffff00;

	if (P.version == 1) {
		t->reg[1] |= (e->tCL + 2 - (t->tCWL - 1));

		t->reg[3] = (0x14 + e->tCL) << 24 |
			    0x16 << 16 |
			    (e->tCL - 1) << 8 |
			    (e->tCL - 1);

		t->reg[4] |= boot->reg[4] & 0xffff0000;

		t->reg[6] = (0x33 - t->tCWL) << 16 |
			    t->tCWL << 8 |
			    (0x2e + e->tCL - t->tCWL);

		t->reg[7] = 0x4000202 | (e->tCL - 1) << 16;

		/* XXX: P.version == 1 only has DDR2 and GDDR3? */
		if (dev_priv->vram_type == NV_MEM_TYPE_DDR2) {
			t->reg[5] |= (e->tCL + 3) << 8;
			t->reg[6] |= (t->tCWL - 2) << 8;
			t->reg[8] |= (e->tCL - 4);
		} else {
			t->reg[5] |= (e->tCL + 2) << 8;
			t->reg[6] |= t->tCWL << 8;
			t->reg[8] |= (e->tCL - 2);
		}
	} else {
		t->reg[1] |= (5 + e->tCL - (t->tCWL));

		/* XXX: 0xb? 0x30? */
		t->reg[3] = (0x30 + e->tCL) << 24 |
			    (boot->reg[3] & 0x00ff0000)|
			    (0xb + e->tCL) << 8 |
			    (e->tCL - 1);

		t->reg[4] |= (unk20 << 24 | unk21 << 16);

		/* XXX: +6? */
		t->reg[5] |= (t->tCWL + 6) << 8;

		t->reg[6] = (0x5a + e->tCL) << 16 |
			    (6 - e->tCL + t->tCWL) << 8 |
			    (0x50 + e->tCL - t->tCWL);

		tmp7_3 = (boot->reg[7] & 0xff000000) >> 24;
		t->reg[7] = (tmp7_3 << 24) |
			    ((tmp7_3 - 6 + e->tCL) << 16) |
			    0x202;
	}

	NV_DEBUG(dev, "Entry %d: 220: %08x %08x %08x %08x\n", t->id,
		 t->reg[0], t->reg[1], t->reg[2], t->reg[3]);
	NV_DEBUG(dev, "         230: %08x %08x %08x %08x\n",
		 t->reg[4], t->reg[5], t->reg[6], t->reg[7]);
	NV_DEBUG(dev, "         240: %08x\n", t->reg[8]);
	return 0;
}

static int
nvc0_mem_timing_calc(struct drm_device *dev, u32 freq,
		     struct nouveau_pm_tbl_entry *e, u8 len,
		     struct nouveau_pm_memtiming *boot,
		     struct nouveau_pm_memtiming *t)
{
	if (e->tCWL > 0)
		t->tCWL = e->tCWL;

	t->reg[0] = (e->tRP << 24 | (e->tRAS & 0x7f) << 17 |
		     e->tRFC << 8 | e->tRC);

	t->reg[1] = (boot->reg[1] & 0xff000000) |
		    (e->tRCDWR & 0x0f) << 20 |
		    (e->tRCDRD & 0x0f) << 14 |
		    (t->tCWL << 7) |
		    (e->tCL & 0x0f);

	t->reg[2] = (boot->reg[2] & 0xff0000ff) |
		    e->tWR << 16 | e->tWTR << 8;

	t->reg[3] = (e->tUNK_20 & 0x1f) << 9 |
		    (e->tUNK_21 & 0xf) << 5 |
		    (e->tUNK_13 & 0x1f);

	t->reg[4] = (boot->reg[4] & 0xfff00fff) |
		    (e->tRRD&0x1f) << 15;

	NV_DEBUG(dev, "Entry %d: 290: %08x %08x %08x %08x\n", t->id,
		 t->reg[0], t->reg[1], t->reg[2], t->reg[3]);
	NV_DEBUG(dev, "         2a0: %08x\n", t->reg[4]);
	return 0;
}

/**
 * MR generation methods
 */

static int
nouveau_mem_ddr2_mr(struct drm_device *dev, u32 freq,
		    struct nouveau_pm_tbl_entry *e, u8 len,
		    struct nouveau_pm_memtiming *boot,
		    struct nouveau_pm_memtiming *t)
{
	t->drive_strength = 0;
	if (len < 15) {
		t->odt = boot->odt;
	} else {
		t->odt = e->RAM_FT1 & 0x07;
	}

	if (e->tCL >= NV_MEM_CL_DDR2_MAX) {
		NV_WARN(dev, "(%u) Invalid tCL: %u", t->id, e->tCL);
		return -ERANGE;
	}

	if (e->tWR >= NV_MEM_WR_DDR2_MAX) {
		NV_WARN(dev, "(%u) Invalid tWR: %u", t->id, e->tWR);
		return -ERANGE;
	}

	if (t->odt > 3) {
		NV_WARN(dev, "(%u) Invalid odt value, assuming disabled: %x",
			t->id, t->odt);
		t->odt = 0;
	}

	t->mr[0] = (boot->mr[0] & 0x100f) |
		   (e->tCL) << 4 |
		   (e->tWR - 1) << 9;
	t->mr[1] = (boot->mr[1] & 0x101fbb) |
		   (t->odt & 0x1) << 2 |
		   (t->odt & 0x2) << 5;

	NV_DEBUG(dev, "(%u) MR: %08x", t->id, t->mr[0]);
	return 0;
}

uint8_t nv_mem_wr_lut_ddr3[NV_MEM_WR_DDR3_MAX] = {
	0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 5, 6, 6, 7, 7, 0, 0};

static int
nouveau_mem_ddr3_mr(struct drm_device *dev, u32 freq,
		    struct nouveau_pm_tbl_entry *e, u8 len,
		    struct nouveau_pm_memtiming *boot,
		    struct nouveau_pm_memtiming *t)
{
	u8 cl = e->tCL - 4;

	t->drive_strength = 0;
	if (len < 15) {
		t->odt = boot->odt;
	} else {
		t->odt = e->RAM_FT1 & 0x07;
	}

	if (e->tCL >= NV_MEM_CL_DDR3_MAX || e->tCL < 4) {
		NV_WARN(dev, "(%u) Invalid tCL: %u", t->id, e->tCL);
		return -ERANGE;
	}

	if (e->tWR >= NV_MEM_WR_DDR3_MAX || e->tWR < 4) {
		NV_WARN(dev, "(%u) Invalid tWR: %u", t->id, e->tWR);
		return -ERANGE;
	}

	if (e->tCWL < 5) {
		NV_WARN(dev, "(%u) Invalid tCWL: %u", t->id, e->tCWL);
		return -ERANGE;
	}

	t->mr[0] = (boot->mr[0] & 0x180b) |
		   /* CAS */
		   (cl & 0x7) << 4 |
		   (cl & 0x8) >> 1 |
		   (nv_mem_wr_lut_ddr3[e->tWR]) << 9;
	t->mr[1] = (boot->mr[1] & 0x101dbb) |
		   (t->odt & 0x1) << 2 |
		   (t->odt & 0x2) << 5 |
		   (t->odt & 0x4) << 7;
	t->mr[2] = (boot->mr[2] & 0x20ffb7) | (e->tCWL - 5) << 3;

	NV_DEBUG(dev, "(%u) MR: %08x %08x", t->id, t->mr[0], t->mr[2]);
	return 0;
}

uint8_t nv_mem_cl_lut_gddr3[NV_MEM_CL_GDDR3_MAX] = {
	0, 0, 0, 0, 4, 5, 6, 7, 0, 1, 2, 3, 8, 9, 10, 11};
uint8_t nv_mem_wr_lut_gddr3[NV_MEM_WR_GDDR3_MAX] = {
	0, 0, 0, 0, 0, 2, 3, 8, 9, 10, 11, 0, 0, 1, 1, 0, 3};

static int
nouveau_mem_gddr3_mr(struct drm_device *dev, u32 freq,
		     struct nouveau_pm_tbl_entry *e, u8 len,
		     struct nouveau_pm_memtiming *boot,
		     struct nouveau_pm_memtiming *t)
{
	if (len < 15) {
		t->drive_strength = boot->drive_strength;
		t->odt = boot->odt;
	} else {
		t->drive_strength = (e->RAM_FT1 & 0x30) >> 4;
		t->odt = e->RAM_FT1 & 0x07;
	}

	if (e->tCL >= NV_MEM_CL_GDDR3_MAX) {
		NV_WARN(dev, "(%u) Invalid tCL: %u", t->id, e->tCL);
		return -ERANGE;
	}

	if (e->tWR >= NV_MEM_WR_GDDR3_MAX) {
		NV_WARN(dev, "(%u) Invalid tWR: %u", t->id, e->tWR);
		return -ERANGE;
	}

	if (t->odt > 3) {
		NV_WARN(dev, "(%u) Invalid odt value, assuming autocal: %x",
			t->id, t->odt);
		t->odt = 0;
	}

	t->mr[0] = (boot->mr[0] & 0xe0b) |
		   /* CAS */
		   ((nv_mem_cl_lut_gddr3[e->tCL] & 0x7) << 4) |
		   ((nv_mem_cl_lut_gddr3[e->tCL] & 0x8) >> 2);
	t->mr[1] = (boot->mr[1] & 0x100f40) | t->drive_strength |
		   (t->odt << 2) |
		   (nv_mem_wr_lut_gddr3[e->tWR] & 0xf) << 4;
	t->mr[2] = boot->mr[2];

	NV_DEBUG(dev, "(%u) MR: %08x %08x %08x", t->id,
		      t->mr[0], t->mr[1], t->mr[2]);
	return 0;
}

static int
nouveau_mem_gddr5_mr(struct drm_device *dev, u32 freq,
		     struct nouveau_pm_tbl_entry *e, u8 len,
		     struct nouveau_pm_memtiming *boot,
		     struct nouveau_pm_memtiming *t)
{
	if (len < 15) {
		t->drive_strength = boot->drive_strength;
		t->odt = boot->odt;
	} else {
		t->drive_strength = (e->RAM_FT1 & 0x30) >> 4;
		t->odt = e->RAM_FT1 & 0x03;
	}

	if (e->tCL >= NV_MEM_CL_GDDR5_MAX) {
		NV_WARN(dev, "(%u) Invalid tCL: %u", t->id, e->tCL);
		return -ERANGE;
	}

	if (e->tWR >= NV_MEM_WR_GDDR5_MAX) {
		NV_WARN(dev, "(%u) Invalid tWR: %u", t->id, e->tWR);
		return -ERANGE;
	}

	if (t->odt > 3) {
		NV_WARN(dev, "(%u) Invalid odt value, assuming autocal: %x",
			t->id, t->odt);
		t->odt = 0;
	}

	t->mr[0] = (boot->mr[0] & 0x007) |
		   ((e->tCL - 5) << 3) |
		   ((e->tWR - 4) << 8);
	t->mr[1] = (boot->mr[1] & 0x1007f0) |
		   t->drive_strength |
		   (t->odt << 2);

	NV_DEBUG(dev, "(%u) MR: %08x %08x", t->id, t->mr[0], t->mr[1]);
	return 0;
}

int
nouveau_mem_timing_calc(struct drm_device *dev, u32 freq,
			struct nouveau_pm_memtiming *t)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	struct nouveau_pm_engine *pm = &dev_priv->engine.pm;
	struct nouveau_pm_memtiming *boot = &pm->boot.timing;
	struct nouveau_pm_tbl_entry *e;
	u8 ver, len, *ptr, *ramcfg;
	int ret;

	ptr = nouveau_perf_timing(dev, freq, &ver, &len);
	if (!ptr || ptr[0] == 0x00) {
		*t = *boot;
		return 0;
	}
	e = (struct nouveau_pm_tbl_entry *)ptr;

	t->tCWL = boot->tCWL;

	switch (dev_priv->card_type) {
	case NV_40:
		ret = nv40_mem_timing_calc(dev, freq, e, len, boot, t);
		break;
	case NV_50:
		ret = nv50_mem_timing_calc(dev, freq, e, len, boot, t);
		break;
	case NV_C0:
	case NV_D0:
		ret = nvc0_mem_timing_calc(dev, freq, e, len, boot, t);
		break;
	default:
		ret = -ENODEV;
		break;
	}

	switch (dev_priv->vram_type * !ret) {
	case NV_MEM_TYPE_GDDR3:
		ret = nouveau_mem_gddr3_mr(dev, freq, e, len, boot, t);
		break;
	case NV_MEM_TYPE_GDDR5:
		ret = nouveau_mem_gddr5_mr(dev, freq, e, len, boot, t);
		break;
	case NV_MEM_TYPE_DDR2:
		ret = nouveau_mem_ddr2_mr(dev, freq, e, len, boot, t);
		break;
	case NV_MEM_TYPE_DDR3:
		ret = nouveau_mem_ddr3_mr(dev, freq, e, len, boot, t);
		break;
	default:
		ret = -EINVAL;
		break;
	}

	ramcfg = nouveau_perf_ramcfg(dev, freq, &ver, &len);
	if (ramcfg) {
		int dll_off;

		if (ver == 0x00)
			dll_off = !!(ramcfg[3] & 0x04);
		else
			dll_off = !!(ramcfg[2] & 0x40);

		switch (dev_priv->vram_type) {
		case NV_MEM_TYPE_GDDR3:
			t->mr[1] &= ~0x00000040;
			t->mr[1] |=  0x00000040 * dll_off;
			break;
		default:
			t->mr[1] &= ~0x00000001;
			t->mr[1] |=  0x00000001 * dll_off;
			break;
		}
	}

	return ret;
}

void
nouveau_mem_timing_read(struct drm_device *dev, struct nouveau_pm_memtiming *t)
{
	struct drm_nouveau_private *dev_priv = dev->dev_private;
	u32 timing_base, timing_regs, mr_base;
	int i;

	if (dev_priv->card_type >= 0xC0) {
		timing_base = 0x10f290;
		mr_base = 0x10f300;
	} else {
		timing_base = 0x100220;
		mr_base = 0x1002c0;
	}

	t->id = -1;

	switch (dev_priv->card_type) {
	case NV_50:
		timing_regs = 9;
		break;
	case NV_C0:
	case NV_D0:
		timing_regs = 5;
		break;
	case NV_30:
	case NV_40:
		timing_regs = 3;
		break;
	default:
		timing_regs = 0;
		return;
	}
	for(i = 0; i < timing_regs; i++)
		t->reg[i] = nv_rd32(dev, timing_base + (0x04 * i));

	t->tCWL = 0;
	if (dev_priv->card_type < NV_C0) {
		t->tCWL = ((nv_rd32(dev, 0x100228) & 0x0f000000) >> 24) + 1;
	} else if (dev_priv->card_type <= NV_D0) {
		t->tCWL = ((nv_rd32(dev, 0x10f294) & 0x00000f80) >> 7);
	}

	t->mr[0] = nv_rd32(dev, mr_base);
	t->mr[1] = nv_rd32(dev, mr_base + 0x04);
	t->mr[2] = nv_rd32(dev, mr_base + 0x20);
	t->mr[3] = nv_rd32(dev, mr_base + 0x24);

	t->odt = 0;
	t->drive_strength = 0;

	switch (dev_priv->vram_type) {
	case NV_MEM_TYPE_DDR3:
		t->odt |= (t->mr[1] & 0x200) >> 7;
	case NV_MEM_TYPE_DDR2:
		t->odt |= (t->mr[1] & 0x04) >> 2 |
			  (t->mr[1] & 0x40) >> 5;
		break;
	case NV_MEM_TYPE_GDDR3:
	case NV_MEM_TYPE_GDDR5:
		t->drive_strength = t->mr[1] & 0x03;
		t->odt = (t->mr[1] & 0x0c) >> 2;
		break;
	default:
		break;
	}
}

int
nouveau_mem_exec(struct nouveau_mem_exec_func *exec,
		 struct nouveau_pm_level *perflvl)
{
	struct drm_nouveau_private *dev_priv = exec->dev->dev_private;
	struct nouveau_pm_memtiming *info = &perflvl->timing;
	u32 tMRD = 1000, tCKSRE = 0, tCKSRX = 0, tXS = 0, tDLLK = 0;
	u32 mr[3] = { info->mr[0], info->mr[1], info->mr[2] };
	u32 mr1_dlloff;

	switch (dev_priv->vram_type) {
	case NV_MEM_TYPE_DDR2:
		tDLLK = 2000;
		mr1_dlloff = 0x00000001;
		break;
	case NV_MEM_TYPE_DDR3:
		tDLLK = 12000;
		tCKSRE = 2000;
		tXS = 1000;
		mr1_dlloff = 0x00000001;
		break;
	case NV_MEM_TYPE_GDDR3:
		tDLLK = 40000;
		mr1_dlloff = 0x00000040;
		break;
	default:
		NV_ERROR(exec->dev, "cannot reclock unsupported memtype\n");
		return -ENODEV;
	}

	/* fetch current MRs */
	switch (dev_priv->vram_type) {
	case NV_MEM_TYPE_GDDR3:
	case NV_MEM_TYPE_DDR3:
		mr[2] = exec->mrg(exec, 2);
	default:
		mr[1] = exec->mrg(exec, 1);
		mr[0] = exec->mrg(exec, 0);
		break;
	}

	/* DLL 'on' -> DLL 'off' mode, disable before entering self-refresh  */
	if (!(mr[1] & mr1_dlloff) && (info->mr[1] & mr1_dlloff)) {
		exec->precharge(exec);
		exec->mrs (exec, 1, mr[1] | mr1_dlloff);
		exec->wait(exec, tMRD);
	}

	/* enter self-refresh mode */
	exec->precharge(exec);
	exec->refresh(exec);
	exec->refresh(exec);
	exec->refresh_auto(exec, false);
	exec->refresh_self(exec, true);
	exec->wait(exec, tCKSRE);

	/* modify input clock frequency */
	exec->clock_set(exec);

	/* exit self-refresh mode */
	exec->wait(exec, tCKSRX);
	exec->precharge(exec);
	exec->refresh_self(exec, false);
	exec->refresh_auto(exec, true);
	exec->wait(exec, tXS);
	exec->wait(exec, tXS);

	/* update MRs */
	if (mr[2] != info->mr[2]) {
		exec->mrs (exec, 2, info->mr[2]);
		exec->wait(exec, tMRD);
	}

	if (mr[1] != info->mr[1]) {
		/* need to keep DLL off until later, at least on GDDR3 */
		exec->mrs (exec, 1, info->mr[1] | (mr[1] & mr1_dlloff));
		exec->wait(exec, tMRD);
	}

	if (mr[0] != info->mr[0]) {
		exec->mrs (exec, 0, info->mr[0]);
		exec->wait(exec, tMRD);
	}

	/* update PFB timing registers */
	exec->timing_set(exec);

	/* DLL (enable + ) reset */
	if (!(info->mr[1] & mr1_dlloff)) {
		if (mr[1] & mr1_dlloff) {
			exec->mrs (exec, 1, info->mr[1]);
			exec->wait(exec, tMRD);
		}
		exec->mrs (exec, 0, info->mr[0] | 0x00000100);
		exec->wait(exec, tMRD);
		exec->mrs (exec, 0, info->mr[0] | 0x00000000);
		exec->wait(exec, tMRD);
		exec->wait(exec, tDLLK);
		if (dev_priv->vram_type == NV_MEM_TYPE_GDDR3)
			exec->precharge(exec);
	}

	return 0;
}

int
nouveau_mem_vbios_type(struct drm_device *dev)
{
	struct bit_entry M;
	u8 ramcfg = (nv_rd32(dev, 0x101000) & 0x0000003c) >> 2;
	if (!bit_table(dev, 'M', &M) || M.version != 2 || M.length < 5) {
		u8 *table = ROMPTR(dev, M.data[3]);
		if (table && table[0] == 0x10 && ramcfg < table[3]) {
			u8 *entry = table + table[1] + (ramcfg * table[2]);
			switch (entry[0] & 0x0f) {
			case 0: return NV_MEM_TYPE_DDR2;
			case 1: return NV_MEM_TYPE_DDR3;
			case 2: return NV_MEM_TYPE_GDDR3;
			case 3: return NV_MEM_TYPE_GDDR5;
			default:
				break;
			}

		}
	}
	return NV_MEM_TYPE_UNKNOWN;
}

static int
nouveau_vram_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
{
	/* nothing to do */
	return 0;
}

static int
nouveau_vram_manager_fini(struct ttm_mem_type_manager *man)
{
	/* nothing to do */
	return 0;
}

static inline void
nouveau_mem_node_cleanup(struct nouveau_mem *node)
{
	if (node->vma[0].node) {
		nouveau_vm_unmap(&node->vma[0]);
		nouveau_vm_put(&node->vma[0]);
	}

	if (node->vma[1].node) {
		nouveau_vm_unmap(&node->vma[1]);
		nouveau_vm_put(&node->vma[1]);
	}
}

static void
nouveau_vram_manager_del(struct ttm_mem_type_manager *man,
			 struct ttm_mem_reg *mem)
{
	struct drm_nouveau_private *dev_priv = nouveau_bdev(man->bdev);
	struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
	struct drm_device *dev = dev_priv->dev;

	nouveau_mem_node_cleanup(mem->mm_node);
	vram->put(dev, (struct nouveau_mem **)&mem->mm_node);
}

static int
nouveau_vram_manager_new(struct ttm_mem_type_manager *man,
			 struct ttm_buffer_object *bo,
			 struct ttm_placement *placement,
			 struct ttm_mem_reg *mem)
{
	struct drm_nouveau_private *dev_priv = nouveau_bdev(man->bdev);
	struct nouveau_vram_engine *vram = &dev_priv->engine.vram;
	struct drm_device *dev = dev_priv->dev;
	struct nouveau_bo *nvbo = nouveau_bo(bo);
	struct nouveau_mem *node;
	u32 size_nc = 0;
	int ret;

	if (nvbo->tile_flags & NOUVEAU_GEM_TILE_NONCONTIG)
		size_nc = 1 << nvbo->page_shift;

	ret = vram->get(dev, mem->num_pages << PAGE_SHIFT,
			mem->page_alignment << PAGE_SHIFT, size_nc,
			(nvbo->tile_flags >> 8) & 0x3ff, &node);
	if (ret) {
		mem->mm_node = NULL;
		return (ret == -ENOSPC) ? 0 : ret;
	}

	node->page_shift = nvbo->page_shift;

	mem->mm_node = node;
	mem->start   = node->offset >> PAGE_SHIFT;
	return 0;
}

void
nouveau_vram_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
{
	struct nouveau_mm *mm = man->priv;
	struct nouveau_mm_node *r;
	u32 total = 0, free = 0;

	mutex_lock(&mm->mutex);
	list_for_each_entry(r, &mm->nodes, nl_entry) {
		printk(KERN_DEBUG "%s %d: 0x%010llx 0x%010llx\n",
		       prefix, r->type, ((u64)r->offset << 12),
		       (((u64)r->offset + r->length) << 12));

		total += r->length;
		if (!r->type)
			free += r->length;
	}
	mutex_unlock(&mm->mutex);

	printk(KERN_DEBUG "%s  total: 0x%010llx free: 0x%010llx\n",
	       prefix, (u64)total << 12, (u64)free << 12);
	printk(KERN_DEBUG "%s  block: 0x%08x\n",
	       prefix, mm->block_size << 12);
}

const struct ttm_mem_type_manager_func nouveau_vram_manager = {
	nouveau_vram_manager_init,
	nouveau_vram_manager_fini,
	nouveau_vram_manager_new,
	nouveau_vram_manager_del,
	nouveau_vram_manager_debug
};

static int
nouveau_gart_manager_init(struct ttm_mem_type_manager *man, unsigned long psize)
{
	return 0;
}

static int
nouveau_gart_manager_fini(struct ttm_mem_type_manager *man)
{
	return 0;
}

static void
nouveau_gart_manager_del(struct ttm_mem_type_manager *man,
			 struct ttm_mem_reg *mem)
{
	nouveau_mem_node_cleanup(mem->mm_node);
	kfree(mem->mm_node);
	mem->mm_node = NULL;
}

static int
nouveau_gart_manager_new(struct ttm_mem_type_manager *man,
			 struct ttm_buffer_object *bo,
			 struct ttm_placement *placement,
			 struct ttm_mem_reg *mem)
{
	struct drm_nouveau_private *dev_priv = nouveau_bdev(bo->bdev);
	struct nouveau_mem *node;

	if (unlikely((mem->num_pages << PAGE_SHIFT) >=
		     dev_priv->gart_info.aper_size))
		return -ENOMEM;

	node = kzalloc(sizeof(*node), GFP_KERNEL);
	if (!node)
		return -ENOMEM;
	node->page_shift = 12;

	mem->mm_node = node;
	mem->start   = 0;
	return 0;
}

void
nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
{
}

const struct ttm_mem_type_manager_func nouveau_gart_manager = {
	nouveau_gart_manager_init,
	nouveau_gart_manager_fini,
	nouveau_gart_manager_new,
	nouveau_gart_manager_del,
	nouveau_gart_manager_debug
};