summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/i915/gt/intel_mocs.c
blob: d791d63d49b49e6bb9fa5750c1760975769fd258 (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
// SPDX-License-Identifier: MIT
/*
 * Copyright © 2015 Intel Corporation
 */

#include "i915_drv.h"

#include "intel_engine.h"
#include "intel_gt.h"
#include "intel_gt_mcr.h"
#include "intel_gt_regs.h"
#include "intel_mocs.h"
#include "intel_ring.h"

/* structures required */
struct drm_i915_mocs_entry {
	u32 control_value;
	u16 l3cc_value;
	u16 used;
};

struct drm_i915_mocs_table {
	unsigned int size;
	unsigned int n_entries;
	const struct drm_i915_mocs_entry *table;
	u8 uc_index;
	u8 wb_index; /* Only used on HAS_L3_CCS_READ() platforms */
	u8 unused_entries_index;
};

/* Defines for the tables (XXX_MOCS_0 - XXX_MOCS_63) */
#define _LE_CACHEABILITY(value)	((value) << 0)
#define _LE_TGT_CACHE(value)	((value) << 2)
#define LE_LRUM(value)		((value) << 4)
#define LE_AOM(value)		((value) << 6)
#define LE_RSC(value)		((value) << 7)
#define LE_SCC(value)		((value) << 8)
#define LE_PFM(value)		((value) << 11)
#define LE_SCF(value)		((value) << 14)
#define LE_COS(value)		((value) << 15)
#define LE_SSE(value)		((value) << 17)

/* Defines for the tables (GLOB_MOCS_0 - GLOB_MOCS_16) */
#define _L4_CACHEABILITY(value)	((value) << 2)
#define IG_PAT(value)		((value) << 8)

/* Defines for the tables (LNCFMOCS0 - LNCFMOCS31) - two entries per word */
#define L3_ESC(value)		((value) << 0)
#define L3_SCC(value)		((value) << 1)
#define _L3_CACHEABILITY(value)	((value) << 4)
#define L3_GLBGO(value)		((value) << 6)
#define L3_LKUP(value)		((value) << 7)

/* Helper defines */
#define GEN9_NUM_MOCS_ENTRIES	64  /* 63-64 are reserved, but configured. */
#define MTL_NUM_MOCS_ENTRIES	16

/* (e)LLC caching options */
/*
 * Note: LE_0_PAGETABLE works only up to Gen11; for newer gens it means
 * the same as LE_UC
 */
#define LE_0_PAGETABLE		_LE_CACHEABILITY(0)
#define LE_1_UC			_LE_CACHEABILITY(1)
#define LE_2_WT			_LE_CACHEABILITY(2)
#define LE_3_WB			_LE_CACHEABILITY(3)

/* Target cache */
#define LE_TC_0_PAGETABLE	_LE_TGT_CACHE(0)
#define LE_TC_1_LLC		_LE_TGT_CACHE(1)
#define LE_TC_2_LLC_ELLC	_LE_TGT_CACHE(2)
#define LE_TC_3_LLC_ELLC_ALT	_LE_TGT_CACHE(3)

/* L3 caching options */
#define L3_0_DIRECT		_L3_CACHEABILITY(0)
#define L3_1_UC			_L3_CACHEABILITY(1)
#define L3_2_RESERVED		_L3_CACHEABILITY(2)
#define L3_3_WB			_L3_CACHEABILITY(3)

/* L4 caching options */
#define L4_0_WB			_L4_CACHEABILITY(0)
#define L4_1_WT			_L4_CACHEABILITY(1)
#define L4_2_RESERVED		_L4_CACHEABILITY(2)
#define L4_3_UC			_L4_CACHEABILITY(3)

#define MOCS_ENTRY(__idx, __control_value, __l3cc_value) \
	[__idx] = { \
		.control_value = __control_value, \
		.l3cc_value = __l3cc_value, \
		.used = 1, \
	}

/*
 * MOCS tables
 *
 * These are the MOCS tables that are programmed across all the rings.
 * The control value is programmed to all the rings that support the
 * MOCS registers. While the l3cc_values are only programmed to the
 * LNCFCMOCS0 - LNCFCMOCS32 registers.
 *
 * These tables are intended to be kept reasonably consistent across
 * HW platforms, and for ICL+, be identical across OSes. To achieve
 * that, for Icelake and above, list of entries is published as part
 * of bspec.
 *
 * Entries not part of the following tables are undefined as far as
 * userspace is concerned and shouldn't be relied upon.  For Gen < 12
 * they will be initialized to PTE. Gen >= 12 don't have a setting for
 * PTE and those platforms except TGL/RKL will be initialized L3 WB to
 * catch accidental use of reserved and unused mocs indexes.
 *
 * The last few entries are reserved by the hardware. For ICL+ they
 * should be initialized according to bspec and never used, for older
 * platforms they should never be written to.
 *
 * NOTE1: These tables are part of bspec and defined as part of hardware
 *       interface for ICL+. For older platforms, they are part of kernel
 *       ABI. It is expected that, for specific hardware platform, existing
 *       entries will remain constant and the table will only be updated by
 *       adding new entries, filling unused positions.
 *
 * NOTE2: For GEN >= 12 except TGL and RKL, reserved and unspecified MOCS
 *       indices have been set to L3 WB. These reserved entries should never
 *       be used, they may be changed to low performant variants with better
 *       coherency in the future if more entries are needed.
 *       For TGL/RKL, all the unspecified MOCS indexes are mapped to L3 UC.
 */
#define GEN9_MOCS_ENTRIES \
	MOCS_ENTRY(I915_MOCS_UNCACHED, \
		   LE_1_UC | LE_TC_2_LLC_ELLC, \
		   L3_1_UC), \
	MOCS_ENTRY(I915_MOCS_PTE, \
		   LE_0_PAGETABLE | LE_TC_0_PAGETABLE | LE_LRUM(3), \
		   L3_3_WB)

static const struct drm_i915_mocs_entry skl_mocs_table[] = {
	GEN9_MOCS_ENTRIES,
	MOCS_ENTRY(I915_MOCS_CACHED,
		   LE_3_WB | LE_TC_2_LLC_ELLC | LE_LRUM(3),
		   L3_3_WB),

	/*
	 * mocs:63
	 * - used by the L3 for all of its evictions.
	 *   Thus it is expected to allow LLC cacheability to enable coherent
	 *   flows to be maintained.
	 * - used to force L3 uncachable cycles.
	 *   Thus it is expected to make the surface L3 uncacheable.
	 */
	MOCS_ENTRY(63,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_1_UC)
};

/* NOTE: the LE_TGT_CACHE is not used on Broxton */
static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
	GEN9_MOCS_ENTRIES,
	MOCS_ENTRY(I915_MOCS_CACHED,
		   LE_1_UC | LE_TC_2_LLC_ELLC | LE_LRUM(3),
		   L3_3_WB)
};

#define GEN11_MOCS_ENTRIES \
	/* Entries 0 and 1 are defined per-platform */ \
	/* Base - L3 + LLC */ \
	MOCS_ENTRY(2, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
		   L3_3_WB), \
	/* Base - Uncached */ \
	MOCS_ENTRY(3, \
		   LE_1_UC | LE_TC_1_LLC, \
		   L3_1_UC), \
	/* Base - L3 */ \
	MOCS_ENTRY(4, \
		   LE_1_UC | LE_TC_1_LLC, \
		   L3_3_WB), \
	/* Base - LLC */ \
	MOCS_ENTRY(5, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
		   L3_1_UC), \
	/* Age 0 - LLC */ \
	MOCS_ENTRY(6, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(1), \
		   L3_1_UC), \
	/* Age 0 - L3 + LLC */ \
	MOCS_ENTRY(7, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(1), \
		   L3_3_WB), \
	/* Age: Don't Chg. - LLC */ \
	MOCS_ENTRY(8, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(2), \
		   L3_1_UC), \
	/* Age: Don't Chg. - L3 + LLC */ \
	MOCS_ENTRY(9, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(2), \
		   L3_3_WB), \
	/* No AOM - LLC */ \
	MOCS_ENTRY(10, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_AOM(1), \
		   L3_1_UC), \
	/* No AOM - L3 + LLC */ \
	MOCS_ENTRY(11, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_AOM(1), \
		   L3_3_WB), \
	/* No AOM; Age 0 - LLC */ \
	MOCS_ENTRY(12, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(1) | LE_AOM(1), \
		   L3_1_UC), \
	/* No AOM; Age 0 - L3 + LLC */ \
	MOCS_ENTRY(13, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(1) | LE_AOM(1), \
		   L3_3_WB), \
	/* No AOM; Age:DC - LLC */ \
	MOCS_ENTRY(14, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(2) | LE_AOM(1), \
		   L3_1_UC), \
	/* No AOM; Age:DC - L3 + LLC */ \
	MOCS_ENTRY(15, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(2) | LE_AOM(1), \
		   L3_3_WB), \
	/* Bypass LLC - Uncached (EHL+) */ \
	MOCS_ENTRY(16, \
		   LE_1_UC | LE_TC_1_LLC | LE_SCF(1), \
		   L3_1_UC), \
	/* Bypass LLC - L3 (Read-Only) (EHL+) */ \
	MOCS_ENTRY(17, \
		   LE_1_UC | LE_TC_1_LLC | LE_SCF(1), \
		   L3_3_WB), \
	/* Self-Snoop - L3 + LLC */ \
	MOCS_ENTRY(18, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SSE(3), \
		   L3_3_WB), \
	/* Skip Caching - L3 + LLC(12.5%) */ \
	MOCS_ENTRY(19, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(7), \
		   L3_3_WB), \
	/* Skip Caching - L3 + LLC(25%) */ \
	MOCS_ENTRY(20, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(3), \
		   L3_3_WB), \
	/* Skip Caching - L3 + LLC(50%) */ \
	MOCS_ENTRY(21, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(1), \
		   L3_3_WB), \
	/* Skip Caching - L3 + LLC(75%) */ \
	MOCS_ENTRY(22, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_RSC(1) | LE_SCC(3), \
		   L3_3_WB), \
	/* Skip Caching - L3 + LLC(87.5%) */ \
	MOCS_ENTRY(23, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_RSC(1) | LE_SCC(7), \
		   L3_3_WB), \
	/* HW Reserved - SW program but never use */ \
	MOCS_ENTRY(62, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
		   L3_1_UC), \
	/* HW Reserved - SW program but never use */ \
	MOCS_ENTRY(63, \
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
		   L3_1_UC)

static const struct drm_i915_mocs_entry tgl_mocs_table[] = {
	/*
	 * NOTE:
	 * Reserved and unspecified MOCS indices have been set to (L3 + LCC).
	 * These reserved entries should never be used, they may be changed
	 * to low performant variants with better coherency in the future if
	 * more entries are needed. We are programming index I915_MOCS_PTE(1)
	 * only, __init_mocs_table() take care to program unused index with
	 * this entry.
	 */
	MOCS_ENTRY(I915_MOCS_PTE,
		   LE_0_PAGETABLE | LE_TC_0_PAGETABLE,
		   L3_1_UC),
	GEN11_MOCS_ENTRIES,

	/* Implicitly enable L1 - HDC:L1 + L3 + LLC */
	MOCS_ENTRY(48,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_3_WB),
	/* Implicitly enable L1 - HDC:L1 + L3 */
	MOCS_ENTRY(49,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_3_WB),
	/* Implicitly enable L1 - HDC:L1 + LLC */
	MOCS_ENTRY(50,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_1_UC),
	/* Implicitly enable L1 - HDC:L1 */
	MOCS_ENTRY(51,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_1_UC),
	/* HW Special Case (CCS) */
	MOCS_ENTRY(60,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_1_UC),
	/* HW Special Case (Displayable) */
	MOCS_ENTRY(61,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_3_WB),
};

static const struct drm_i915_mocs_entry icl_mocs_table[] = {
	/* Base - Uncached (Deprecated) */
	MOCS_ENTRY(I915_MOCS_UNCACHED,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_1_UC),
	/* Base - L3 + LeCC:PAT (Deprecated) */
	MOCS_ENTRY(I915_MOCS_PTE,
		   LE_0_PAGETABLE | LE_TC_0_PAGETABLE,
		   L3_3_WB),

	GEN11_MOCS_ENTRIES
};

static const struct drm_i915_mocs_entry dg1_mocs_table[] = {

	/* UC */
	MOCS_ENTRY(1, 0, L3_1_UC),
	/* WB - L3 */
	MOCS_ENTRY(5, 0, L3_3_WB),
	/* WB - L3 50% */
	MOCS_ENTRY(6, 0, L3_ESC(1) | L3_SCC(1) | L3_3_WB),
	/* WB - L3 25% */
	MOCS_ENTRY(7, 0, L3_ESC(1) | L3_SCC(3) | L3_3_WB),
	/* WB - L3 12.5% */
	MOCS_ENTRY(8, 0, L3_ESC(1) | L3_SCC(7) | L3_3_WB),

	/* HDC:L1 + L3 */
	MOCS_ENTRY(48, 0, L3_3_WB),
	/* HDC:L1 */
	MOCS_ENTRY(49, 0, L3_1_UC),

	/* HW Reserved */
	MOCS_ENTRY(60, 0, L3_1_UC),
	MOCS_ENTRY(61, 0, L3_1_UC),
	MOCS_ENTRY(62, 0, L3_1_UC),
	MOCS_ENTRY(63, 0, L3_1_UC),
};

static const struct drm_i915_mocs_entry gen12_mocs_table[] = {
	GEN11_MOCS_ENTRIES,
	/* Implicitly enable L1 - HDC:L1 + L3 + LLC */
	MOCS_ENTRY(48,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_3_WB),
	/* Implicitly enable L1 - HDC:L1 + L3 */
	MOCS_ENTRY(49,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_3_WB),
	/* Implicitly enable L1 - HDC:L1 + LLC */
	MOCS_ENTRY(50,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_1_UC),
	/* Implicitly enable L1 - HDC:L1 */
	MOCS_ENTRY(51,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_1_UC),
	/* HW Special Case (CCS) */
	MOCS_ENTRY(60,
		   LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
		   L3_1_UC),
	/* HW Special Case (Displayable) */
	MOCS_ENTRY(61,
		   LE_1_UC | LE_TC_1_LLC,
		   L3_3_WB),
};

static const struct drm_i915_mocs_entry dg2_mocs_table[] = {
	/* UC - Coherent; GO:L3 */
	MOCS_ENTRY(0, 0, L3_1_UC | L3_LKUP(1)),
	/* UC - Coherent; GO:Memory */
	MOCS_ENTRY(1, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
	/* UC - Non-Coherent; GO:Memory */
	MOCS_ENTRY(2, 0, L3_1_UC | L3_GLBGO(1)),

	/* WB - LC */
	MOCS_ENTRY(3, 0, L3_3_WB | L3_LKUP(1)),
};

static const struct drm_i915_mocs_entry mtl_mocs_table[] = {
	/* Error - Reserved for Non-Use */
	MOCS_ENTRY(0,
		   IG_PAT(0),
		   L3_LKUP(1) | L3_3_WB),
	/* Cached - L3 + L4 */
	MOCS_ENTRY(1,
		   IG_PAT(1),
		   L3_LKUP(1) | L3_3_WB),
	/* L4 - GO:L3 */
	MOCS_ENTRY(2,
		   IG_PAT(1),
		   L3_LKUP(1) | L3_1_UC),
	/* Uncached - GO:L3 */
	MOCS_ENTRY(3,
		   IG_PAT(1) | L4_3_UC,
		   L3_LKUP(1) | L3_1_UC),
	/* L4 - GO:Mem */
	MOCS_ENTRY(4,
		   IG_PAT(1),
		   L3_LKUP(1) | L3_GLBGO(1) | L3_1_UC),
	/* Uncached - GO:Mem */
	MOCS_ENTRY(5,
		   IG_PAT(1) | L4_3_UC,
		   L3_LKUP(1) | L3_GLBGO(1) | L3_1_UC),
	/* L4 - L3:NoLKUP; GO:L3 */
	MOCS_ENTRY(6,
		   IG_PAT(1),
		   L3_1_UC),
	/* Uncached - L3:NoLKUP; GO:L3 */
	MOCS_ENTRY(7,
		   IG_PAT(1) | L4_3_UC,
		   L3_1_UC),
	/* L4 - L3:NoLKUP; GO:Mem */
	MOCS_ENTRY(8,
		   IG_PAT(1),
		   L3_GLBGO(1) | L3_1_UC),
	/* Uncached - L3:NoLKUP; GO:Mem */
	MOCS_ENTRY(9,
		   IG_PAT(1) | L4_3_UC,
		   L3_GLBGO(1) | L3_1_UC),
	/* Display - L3; L4:WT */
	MOCS_ENTRY(14,
		   IG_PAT(1) | L4_1_WT,
		   L3_LKUP(1) | L3_3_WB),
	/* CCS - Non-Displayable */
	MOCS_ENTRY(15,
		   IG_PAT(1),
		   L3_GLBGO(1) | L3_1_UC),
};

enum {
	HAS_GLOBAL_MOCS = BIT(0),
	HAS_ENGINE_MOCS = BIT(1),
	HAS_RENDER_L3CC = BIT(2),
};

static bool has_l3cc(const struct drm_i915_private *i915)
{
	return true;
}

static bool has_global_mocs(const struct drm_i915_private *i915)
{
	return HAS_GLOBAL_MOCS_REGISTERS(i915);
}

static bool has_mocs(const struct drm_i915_private *i915)
{
	return !IS_DGFX(i915);
}

static unsigned int get_mocs_settings(struct drm_i915_private *i915,
				      struct drm_i915_mocs_table *table)
{
	unsigned int flags;

	memset(table, 0, sizeof(struct drm_i915_mocs_table));

	table->unused_entries_index = I915_MOCS_PTE;
	if (IS_GFX_GT_IP_RANGE(to_gt(i915), IP_VER(12, 70), IP_VER(12, 74))) {
		table->size = ARRAY_SIZE(mtl_mocs_table);
		table->table = mtl_mocs_table;
		table->n_entries = MTL_NUM_MOCS_ENTRIES;
		table->uc_index = 9;
		table->unused_entries_index = 1;
	} else if (IS_DG2(i915)) {
		table->size = ARRAY_SIZE(dg2_mocs_table);
		table->table = dg2_mocs_table;
		table->uc_index = 1;
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->unused_entries_index = 3;
	} else if (IS_DG1(i915)) {
		table->size = ARRAY_SIZE(dg1_mocs_table);
		table->table = dg1_mocs_table;
		table->uc_index = 1;
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->uc_index = 1;
		table->unused_entries_index = 5;
	} else if (IS_TIGERLAKE(i915) || IS_ROCKETLAKE(i915)) {
		/* For TGL/RKL, Can't be changed now for ABI reasons */
		table->size  = ARRAY_SIZE(tgl_mocs_table);
		table->table = tgl_mocs_table;
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->uc_index = 3;
	} else if (GRAPHICS_VER(i915) >= 12) {
		table->size  = ARRAY_SIZE(gen12_mocs_table);
		table->table = gen12_mocs_table;
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->uc_index = 3;
		table->unused_entries_index = 2;
	} else if (GRAPHICS_VER(i915) == 11) {
		table->size  = ARRAY_SIZE(icl_mocs_table);
		table->table = icl_mocs_table;
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
	} else if (IS_GEN9_BC(i915)) {
		table->size  = ARRAY_SIZE(skl_mocs_table);
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->table = skl_mocs_table;
	} else if (IS_GEN9_LP(i915)) {
		table->size  = ARRAY_SIZE(broxton_mocs_table);
		table->n_entries = GEN9_NUM_MOCS_ENTRIES;
		table->table = broxton_mocs_table;
	} else {
		drm_WARN_ONCE(&i915->drm, GRAPHICS_VER(i915) >= 9,
			      "Platform that should have a MOCS table does not.\n");
		return 0;
	}

	if (GEM_DEBUG_WARN_ON(table->size > table->n_entries))
		return 0;

	/* WaDisableSkipCaching:skl,bxt,kbl,glk */
	if (GRAPHICS_VER(i915) == 9) {
		int i;

		for (i = 0; i < table->size; i++)
			if (GEM_DEBUG_WARN_ON(table->table[i].l3cc_value &
					      (L3_ESC(1) | L3_SCC(0x7))))
				return 0;
	}

	flags = 0;
	if (has_mocs(i915)) {
		if (has_global_mocs(i915))
			flags |= HAS_GLOBAL_MOCS;
		else
			flags |= HAS_ENGINE_MOCS;
	}
	if (has_l3cc(i915))
		flags |= HAS_RENDER_L3CC;

	return flags;
}

/*
 * Get control_value from MOCS entry taking into account when it's not used
 * then if unused_entries_index is non-zero then its value will be returned
 * otherwise I915_MOCS_PTE's value is returned in this case.
 */
static u32 get_entry_control(const struct drm_i915_mocs_table *table,
			     unsigned int index)
{
	if (index < table->size && table->table[index].used)
		return table->table[index].control_value;
	return table->table[table->unused_entries_index].control_value;
}

#define for_each_mocs(mocs, t, i) \
	for (i = 0; \
	     i < (t)->n_entries ? (mocs = get_entry_control((t), i)), 1 : 0;\
	     i++)

static void __init_mocs_table(struct intel_uncore *uncore,
			      const struct drm_i915_mocs_table *table,
			      u32 addr)
{
	unsigned int i;
	u32 mocs;

	drm_WARN_ONCE(&uncore->i915->drm, !table->unused_entries_index,
		      "Unused entries index should have been defined\n");
	for_each_mocs(mocs, table, i)
		intel_uncore_write_fw(uncore, _MMIO(addr + i * 4), mocs);
}

static u32 mocs_offset(const struct intel_engine_cs *engine)
{
	static const u32 offset[] = {
		[RCS0]  =  __GEN9_RCS0_MOCS0,
		[VCS0]  =  __GEN9_VCS0_MOCS0,
		[VCS1]  =  __GEN9_VCS1_MOCS0,
		[VECS0] =  __GEN9_VECS0_MOCS0,
		[BCS0]  =  __GEN9_BCS0_MOCS0,
		[VCS2]  = __GEN11_VCS2_MOCS0,
	};

	GEM_BUG_ON(engine->id >= ARRAY_SIZE(offset));
	return offset[engine->id];
}

static void init_mocs_table(struct intel_engine_cs *engine,
			    const struct drm_i915_mocs_table *table)
{
	__init_mocs_table(engine->uncore, table, mocs_offset(engine));
}

/*
 * Get l3cc_value from MOCS entry taking into account when it's not used
 * then if unused_entries_index is not zero then its value will be returned
 * otherwise I915_MOCS_PTE's value is returned in this case.
 */
static u16 get_entry_l3cc(const struct drm_i915_mocs_table *table,
			  unsigned int index)
{
	if (index < table->size && table->table[index].used)
		return table->table[index].l3cc_value;
	return table->table[table->unused_entries_index].l3cc_value;
}

static u32 l3cc_combine(u16 low, u16 high)
{
	return low | (u32)high << 16;
}

#define for_each_l3cc(l3cc, t, i) \
	for (i = 0; \
	     i < ((t)->n_entries + 1) / 2 ? \
	     (l3cc = l3cc_combine(get_entry_l3cc((t), 2 * i), \
				  get_entry_l3cc((t), 2 * i + 1))), 1 : \
	     0; \
	     i++)

static void init_l3cc_table(struct intel_gt *gt,
			    const struct drm_i915_mocs_table *table)
{
	unsigned long flags;
	unsigned int i;
	u32 l3cc;

	intel_gt_mcr_lock(gt, &flags);
	for_each_l3cc(l3cc, table, i)
		if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 55))
			intel_gt_mcr_multicast_write_fw(gt, XEHP_LNCFCMOCS(i), l3cc);
		else
			intel_uncore_write_fw(gt->uncore, GEN9_LNCFCMOCS(i), l3cc);
	intel_gt_mcr_unlock(gt, flags);
}

void intel_mocs_init_engine(struct intel_engine_cs *engine)
{
	struct drm_i915_mocs_table table;
	unsigned int flags;

	/* Called under a blanket forcewake */
	assert_forcewakes_active(engine->uncore, FORCEWAKE_ALL);

	flags = get_mocs_settings(engine->i915, &table);
	if (!flags)
		return;

	/* Platforms with global MOCS do not need per-engine initialization. */
	if (flags & HAS_ENGINE_MOCS)
		init_mocs_table(engine, &table);

	if (flags & HAS_RENDER_L3CC && engine->class == RENDER_CLASS)
		init_l3cc_table(engine->gt, &table);
}

static u32 global_mocs_offset(void)
{
	return i915_mmio_reg_offset(GEN12_GLOBAL_MOCS(0));
}

void intel_set_mocs_index(struct intel_gt *gt)
{
	struct drm_i915_mocs_table table;

	get_mocs_settings(gt->i915, &table);
	gt->mocs.uc_index = table.uc_index;
	if (HAS_L3_CCS_READ(gt->i915))
		gt->mocs.wb_index = table.wb_index;
}

void intel_mocs_init(struct intel_gt *gt)
{
	struct drm_i915_mocs_table table;
	unsigned int flags;

	/*
	 * LLC and eDRAM control values are not applicable to dgfx
	 */
	flags = get_mocs_settings(gt->i915, &table);
	if (flags & HAS_GLOBAL_MOCS)
		__init_mocs_table(gt->uncore, &table, global_mocs_offset());

	/*
	 * Initialize the L3CC table as part of mocs initalization to make
	 * sure the LNCFCMOCSx registers are programmed for the subsequent
	 * memory transactions including guc transactions
	 */
	if (flags & HAS_RENDER_L3CC)
		init_l3cc_table(gt, &table);
}

#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
#include "selftest_mocs.c"
#endif