1 // SPDX-License-Identifier: MIT
3 * Copyright © 2015 Intel Corporation
8 #include "intel_engine.h"
10 #include "intel_gt_mcr.h"
11 #include "intel_gt_regs.h"
12 #include "intel_mocs.h"
13 #include "intel_ring.h"
15 /* structures required */
16 struct drm_i915_mocs_entry {
22 struct drm_i915_mocs_table {
24 unsigned int n_entries;
25 const struct drm_i915_mocs_entry *table;
27 u8 wb_index; /* Only used on HAS_L3_CCS_READ() platforms */
28 u8 unused_entries_index;
31 /* Defines for the tables (XXX_MOCS_0 - XXX_MOCS_63) */
32 #define _LE_CACHEABILITY(value) ((value) << 0)
33 #define _LE_TGT_CACHE(value) ((value) << 2)
34 #define LE_LRUM(value) ((value) << 4)
35 #define LE_AOM(value) ((value) << 6)
36 #define LE_RSC(value) ((value) << 7)
37 #define LE_SCC(value) ((value) << 8)
38 #define LE_PFM(value) ((value) << 11)
39 #define LE_SCF(value) ((value) << 14)
40 #define LE_COS(value) ((value) << 15)
41 #define LE_SSE(value) ((value) << 17)
43 /* Defines for the tables (GLOB_MOCS_0 - GLOB_MOCS_16) */
44 #define _L4_CACHEABILITY(value) ((value) << 2)
45 #define IG_PAT(value) ((value) << 8)
47 /* Defines for the tables (LNCFMOCS0 - LNCFMOCS31) - two entries per word */
48 #define L3_ESC(value) ((value) << 0)
49 #define L3_SCC(value) ((value) << 1)
50 #define _L3_CACHEABILITY(value) ((value) << 4)
51 #define L3_GLBGO(value) ((value) << 6)
52 #define L3_LKUP(value) ((value) << 7)
55 #define GEN9_NUM_MOCS_ENTRIES 64 /* 63-64 are reserved, but configured. */
56 #define PVC_NUM_MOCS_ENTRIES 3
57 #define MTL_NUM_MOCS_ENTRIES 16
59 /* (e)LLC caching options */
61 * Note: LE_0_PAGETABLE works only up to Gen11; for newer gens it means
64 #define LE_0_PAGETABLE _LE_CACHEABILITY(0)
65 #define LE_1_UC _LE_CACHEABILITY(1)
66 #define LE_2_WT _LE_CACHEABILITY(2)
67 #define LE_3_WB _LE_CACHEABILITY(3)
70 #define LE_TC_0_PAGETABLE _LE_TGT_CACHE(0)
71 #define LE_TC_1_LLC _LE_TGT_CACHE(1)
72 #define LE_TC_2_LLC_ELLC _LE_TGT_CACHE(2)
73 #define LE_TC_3_LLC_ELLC_ALT _LE_TGT_CACHE(3)
75 /* L3 caching options */
76 #define L3_0_DIRECT _L3_CACHEABILITY(0)
77 #define L3_1_UC _L3_CACHEABILITY(1)
78 #define L3_2_RESERVED _L3_CACHEABILITY(2)
79 #define L3_3_WB _L3_CACHEABILITY(3)
81 /* L4 caching options */
82 #define L4_0_WB _L4_CACHEABILITY(0)
83 #define L4_1_WT _L4_CACHEABILITY(1)
84 #define L4_2_RESERVED _L4_CACHEABILITY(2)
85 #define L4_3_UC _L4_CACHEABILITY(3)
87 #define MOCS_ENTRY(__idx, __control_value, __l3cc_value) \
89 .control_value = __control_value, \
90 .l3cc_value = __l3cc_value, \
97 * These are the MOCS tables that are programmed across all the rings.
98 * The control value is programmed to all the rings that support the
99 * MOCS registers. While the l3cc_values are only programmed to the
100 * LNCFCMOCS0 - LNCFCMOCS32 registers.
102 * These tables are intended to be kept reasonably consistent across
103 * HW platforms, and for ICL+, be identical across OSes. To achieve
104 * that, for Icelake and above, list of entries is published as part
107 * Entries not part of the following tables are undefined as far as
108 * userspace is concerned and shouldn't be relied upon. For Gen < 12
109 * they will be initialized to PTE. Gen >= 12 don't have a setting for
110 * PTE and those platforms except TGL/RKL will be initialized L3 WB to
111 * catch accidental use of reserved and unused mocs indexes.
113 * The last few entries are reserved by the hardware. For ICL+ they
114 * should be initialized according to bspec and never used, for older
115 * platforms they should never be written to.
117 * NOTE1: These tables are part of bspec and defined as part of hardware
118 * interface for ICL+. For older platforms, they are part of kernel
119 * ABI. It is expected that, for specific hardware platform, existing
120 * entries will remain constant and the table will only be updated by
121 * adding new entries, filling unused positions.
123 * NOTE2: For GEN >= 12 except TGL and RKL, reserved and unspecified MOCS
124 * indices have been set to L3 WB. These reserved entries should never
125 * be used, they may be changed to low performant variants with better
126 * coherency in the future if more entries are needed.
127 * For TGL/RKL, all the unspecified MOCS indexes are mapped to L3 UC.
129 #define GEN9_MOCS_ENTRIES \
130 MOCS_ENTRY(I915_MOCS_UNCACHED, \
131 LE_1_UC | LE_TC_2_LLC_ELLC, \
133 MOCS_ENTRY(I915_MOCS_PTE, \
134 LE_0_PAGETABLE | LE_TC_0_PAGETABLE | LE_LRUM(3), \
137 static const struct drm_i915_mocs_entry skl_mocs_table[] = {
139 MOCS_ENTRY(I915_MOCS_CACHED,
140 LE_3_WB | LE_TC_2_LLC_ELLC | LE_LRUM(3),
145 * - used by the L3 for all of its evictions.
146 * Thus it is expected to allow LLC cacheability to enable coherent
147 * flows to be maintained.
148 * - used to force L3 uncachable cycles.
149 * Thus it is expected to make the surface L3 uncacheable.
152 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
156 /* NOTE: the LE_TGT_CACHE is not used on Broxton */
157 static const struct drm_i915_mocs_entry broxton_mocs_table[] = {
159 MOCS_ENTRY(I915_MOCS_CACHED,
160 LE_1_UC | LE_TC_2_LLC_ELLC | LE_LRUM(3),
164 #define GEN11_MOCS_ENTRIES \
165 /* Entries 0 and 1 are defined per-platform */ \
166 /* Base - L3 + LLC */ \
168 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
170 /* Base - Uncached */ \
172 LE_1_UC | LE_TC_1_LLC, \
176 LE_1_UC | LE_TC_1_LLC, \
180 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
184 LE_3_WB | LE_TC_1_LLC | LE_LRUM(1), \
186 /* Age 0 - L3 + LLC */ \
188 LE_3_WB | LE_TC_1_LLC | LE_LRUM(1), \
190 /* Age: Don't Chg. - LLC */ \
192 LE_3_WB | LE_TC_1_LLC | LE_LRUM(2), \
194 /* Age: Don't Chg. - L3 + LLC */ \
196 LE_3_WB | LE_TC_1_LLC | LE_LRUM(2), \
200 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_AOM(1), \
202 /* No AOM - L3 + LLC */ \
204 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_AOM(1), \
206 /* No AOM; Age 0 - LLC */ \
208 LE_3_WB | LE_TC_1_LLC | LE_LRUM(1) | LE_AOM(1), \
210 /* No AOM; Age 0 - L3 + LLC */ \
212 LE_3_WB | LE_TC_1_LLC | LE_LRUM(1) | LE_AOM(1), \
214 /* No AOM; Age:DC - LLC */ \
216 LE_3_WB | LE_TC_1_LLC | LE_LRUM(2) | LE_AOM(1), \
218 /* No AOM; Age:DC - L3 + LLC */ \
220 LE_3_WB | LE_TC_1_LLC | LE_LRUM(2) | LE_AOM(1), \
222 /* Bypass LLC - Uncached (EHL+) */ \
224 LE_1_UC | LE_TC_1_LLC | LE_SCF(1), \
226 /* Bypass LLC - L3 (Read-Only) (EHL+) */ \
228 LE_1_UC | LE_TC_1_LLC | LE_SCF(1), \
230 /* Self-Snoop - L3 + LLC */ \
232 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SSE(3), \
234 /* Skip Caching - L3 + LLC(12.5%) */ \
236 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(7), \
238 /* Skip Caching - L3 + LLC(25%) */ \
240 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(3), \
242 /* Skip Caching - L3 + LLC(50%) */ \
244 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_SCC(1), \
246 /* Skip Caching - L3 + LLC(75%) */ \
248 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_RSC(1) | LE_SCC(3), \
250 /* Skip Caching - L3 + LLC(87.5%) */ \
252 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3) | LE_RSC(1) | LE_SCC(7), \
254 /* HW Reserved - SW program but never use */ \
256 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
258 /* HW Reserved - SW program but never use */ \
260 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3), \
263 static const struct drm_i915_mocs_entry tgl_mocs_table[] = {
266 * Reserved and unspecified MOCS indices have been set to (L3 + LCC).
267 * These reserved entries should never be used, they may be changed
268 * to low performant variants with better coherency in the future if
269 * more entries are needed. We are programming index I915_MOCS_PTE(1)
270 * only, __init_mocs_table() take care to program unused index with
273 MOCS_ENTRY(I915_MOCS_PTE,
274 LE_0_PAGETABLE | LE_TC_0_PAGETABLE,
278 /* Implicitly enable L1 - HDC:L1 + L3 + LLC */
280 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
282 /* Implicitly enable L1 - HDC:L1 + L3 */
284 LE_1_UC | LE_TC_1_LLC,
286 /* Implicitly enable L1 - HDC:L1 + LLC */
288 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
290 /* Implicitly enable L1 - HDC:L1 */
292 LE_1_UC | LE_TC_1_LLC,
294 /* HW Special Case (CCS) */
296 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
298 /* HW Special Case (Displayable) */
300 LE_1_UC | LE_TC_1_LLC,
304 static const struct drm_i915_mocs_entry icl_mocs_table[] = {
305 /* Base - Uncached (Deprecated) */
306 MOCS_ENTRY(I915_MOCS_UNCACHED,
307 LE_1_UC | LE_TC_1_LLC,
309 /* Base - L3 + LeCC:PAT (Deprecated) */
310 MOCS_ENTRY(I915_MOCS_PTE,
311 LE_0_PAGETABLE | LE_TC_0_PAGETABLE,
317 static const struct drm_i915_mocs_entry dg1_mocs_table[] = {
320 MOCS_ENTRY(1, 0, L3_1_UC),
322 MOCS_ENTRY(5, 0, L3_3_WB),
324 MOCS_ENTRY(6, 0, L3_ESC(1) | L3_SCC(1) | L3_3_WB),
326 MOCS_ENTRY(7, 0, L3_ESC(1) | L3_SCC(3) | L3_3_WB),
328 MOCS_ENTRY(8, 0, L3_ESC(1) | L3_SCC(7) | L3_3_WB),
331 MOCS_ENTRY(48, 0, L3_3_WB),
333 MOCS_ENTRY(49, 0, L3_1_UC),
336 MOCS_ENTRY(60, 0, L3_1_UC),
337 MOCS_ENTRY(61, 0, L3_1_UC),
338 MOCS_ENTRY(62, 0, L3_1_UC),
339 MOCS_ENTRY(63, 0, L3_1_UC),
342 static const struct drm_i915_mocs_entry gen12_mocs_table[] = {
344 /* Implicitly enable L1 - HDC:L1 + L3 + LLC */
346 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
348 /* Implicitly enable L1 - HDC:L1 + L3 */
350 LE_1_UC | LE_TC_1_LLC,
352 /* Implicitly enable L1 - HDC:L1 + LLC */
354 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
356 /* Implicitly enable L1 - HDC:L1 */
358 LE_1_UC | LE_TC_1_LLC,
360 /* HW Special Case (CCS) */
362 LE_3_WB | LE_TC_1_LLC | LE_LRUM(3),
364 /* HW Special Case (Displayable) */
366 LE_1_UC | LE_TC_1_LLC,
370 static const struct drm_i915_mocs_entry xehpsdv_mocs_table[] = {
372 MOCS_ENTRY(0, 0, L3_3_WB | L3_LKUP(1)),
374 /* UC - Coherent; GO:L3 */
375 MOCS_ENTRY(1, 0, L3_1_UC | L3_LKUP(1)),
376 /* UC - Coherent; GO:Memory */
377 MOCS_ENTRY(2, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
378 /* UC - Non-Coherent; GO:Memory */
379 MOCS_ENTRY(3, 0, L3_1_UC | L3_GLBGO(1)),
380 /* UC - Non-Coherent; GO:L3 */
381 MOCS_ENTRY(4, 0, L3_1_UC),
384 MOCS_ENTRY(5, 0, L3_3_WB | L3_LKUP(1)),
386 /* HW Reserved - SW program but never use. */
387 MOCS_ENTRY(48, 0, L3_3_WB | L3_LKUP(1)),
388 MOCS_ENTRY(49, 0, L3_1_UC | L3_LKUP(1)),
389 MOCS_ENTRY(60, 0, L3_1_UC),
390 MOCS_ENTRY(61, 0, L3_1_UC),
391 MOCS_ENTRY(62, 0, L3_1_UC),
392 MOCS_ENTRY(63, 0, L3_1_UC),
395 static const struct drm_i915_mocs_entry dg2_mocs_table[] = {
396 /* UC - Coherent; GO:L3 */
397 MOCS_ENTRY(0, 0, L3_1_UC | L3_LKUP(1)),
398 /* UC - Coherent; GO:Memory */
399 MOCS_ENTRY(1, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
400 /* UC - Non-Coherent; GO:Memory */
401 MOCS_ENTRY(2, 0, L3_1_UC | L3_GLBGO(1)),
404 MOCS_ENTRY(3, 0, L3_3_WB | L3_LKUP(1)),
407 static const struct drm_i915_mocs_entry dg2_mocs_table_g10_ax[] = {
408 /* Wa_14011441408: Set Go to Memory for MOCS#0 */
409 MOCS_ENTRY(0, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
410 /* UC - Coherent; GO:Memory */
411 MOCS_ENTRY(1, 0, L3_1_UC | L3_GLBGO(1) | L3_LKUP(1)),
412 /* UC - Non-Coherent; GO:Memory */
413 MOCS_ENTRY(2, 0, L3_1_UC | L3_GLBGO(1)),
416 MOCS_ENTRY(3, 0, L3_3_WB | L3_LKUP(1)),
419 static const struct drm_i915_mocs_entry pvc_mocs_table[] = {
421 MOCS_ENTRY(0, 0, L3_3_WB),
424 MOCS_ENTRY(1, 0, L3_1_UC),
427 MOCS_ENTRY(2, 0, L3_3_WB),
430 static const struct drm_i915_mocs_entry mtl_mocs_table[] = {
431 /* Error - Reserved for Non-Use */
434 L3_LKUP(1) | L3_3_WB),
435 /* Cached - L3 + L4 */
438 L3_LKUP(1) | L3_3_WB),
442 L3_LKUP(1) | L3_1_UC),
443 /* Uncached - GO:L3 */
446 L3_LKUP(1) | L3_1_UC),
450 L3_LKUP(1) | L3_GLBGO(1) | L3_1_UC),
451 /* Uncached - GO:Mem */
454 L3_LKUP(1) | L3_GLBGO(1) | L3_1_UC),
455 /* L4 - L3:NoLKUP; GO:L3 */
459 /* Uncached - L3:NoLKUP; GO:L3 */
463 /* L4 - L3:NoLKUP; GO:Mem */
466 L3_GLBGO(1) | L3_1_UC),
467 /* Uncached - L3:NoLKUP; GO:Mem */
470 L3_GLBGO(1) | L3_1_UC),
471 /* Display - L3; L4:WT */
474 L3_LKUP(1) | L3_3_WB),
475 /* CCS - Non-Displayable */
478 L3_GLBGO(1) | L3_1_UC),
482 HAS_GLOBAL_MOCS = BIT(0),
483 HAS_ENGINE_MOCS = BIT(1),
484 HAS_RENDER_L3CC = BIT(2),
487 static bool has_l3cc(const struct drm_i915_private *i915)
492 static bool has_global_mocs(const struct drm_i915_private *i915)
494 return HAS_GLOBAL_MOCS_REGISTERS(i915);
497 static bool has_mocs(const struct drm_i915_private *i915)
499 return !IS_DGFX(i915);
502 static unsigned int get_mocs_settings(const struct drm_i915_private *i915,
503 struct drm_i915_mocs_table *table)
507 memset(table, 0, sizeof(struct drm_i915_mocs_table));
509 table->unused_entries_index = I915_MOCS_PTE;
510 if (IS_METEORLAKE(i915)) {
511 table->size = ARRAY_SIZE(mtl_mocs_table);
512 table->table = mtl_mocs_table;
513 table->n_entries = MTL_NUM_MOCS_ENTRIES;
515 table->unused_entries_index = 1;
516 } else if (IS_PONTEVECCHIO(i915)) {
517 table->size = ARRAY_SIZE(pvc_mocs_table);
518 table->table = pvc_mocs_table;
519 table->n_entries = PVC_NUM_MOCS_ENTRIES;
522 table->unused_entries_index = 2;
523 } else if (IS_DG2(i915)) {
524 if (IS_DG2_GRAPHICS_STEP(i915, G10, STEP_A0, STEP_B0)) {
525 table->size = ARRAY_SIZE(dg2_mocs_table_g10_ax);
526 table->table = dg2_mocs_table_g10_ax;
528 table->size = ARRAY_SIZE(dg2_mocs_table);
529 table->table = dg2_mocs_table;
532 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
533 table->unused_entries_index = 3;
534 } else if (IS_XEHPSDV(i915)) {
535 table->size = ARRAY_SIZE(xehpsdv_mocs_table);
536 table->table = xehpsdv_mocs_table;
538 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
539 table->unused_entries_index = 5;
540 } else if (IS_DG1(i915)) {
541 table->size = ARRAY_SIZE(dg1_mocs_table);
542 table->table = dg1_mocs_table;
544 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
546 table->unused_entries_index = 5;
547 } else if (IS_TIGERLAKE(i915) || IS_ROCKETLAKE(i915)) {
548 /* For TGL/RKL, Can't be changed now for ABI reasons */
549 table->size = ARRAY_SIZE(tgl_mocs_table);
550 table->table = tgl_mocs_table;
551 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
553 } else if (GRAPHICS_VER(i915) >= 12) {
554 table->size = ARRAY_SIZE(gen12_mocs_table);
555 table->table = gen12_mocs_table;
556 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
558 table->unused_entries_index = 2;
559 } else if (GRAPHICS_VER(i915) == 11) {
560 table->size = ARRAY_SIZE(icl_mocs_table);
561 table->table = icl_mocs_table;
562 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
563 } else if (IS_GEN9_BC(i915)) {
564 table->size = ARRAY_SIZE(skl_mocs_table);
565 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
566 table->table = skl_mocs_table;
567 } else if (IS_GEN9_LP(i915)) {
568 table->size = ARRAY_SIZE(broxton_mocs_table);
569 table->n_entries = GEN9_NUM_MOCS_ENTRIES;
570 table->table = broxton_mocs_table;
572 drm_WARN_ONCE(&i915->drm, GRAPHICS_VER(i915) >= 9,
573 "Platform that should have a MOCS table does not.\n");
577 if (GEM_DEBUG_WARN_ON(table->size > table->n_entries))
580 /* WaDisableSkipCaching:skl,bxt,kbl,glk */
581 if (GRAPHICS_VER(i915) == 9) {
584 for (i = 0; i < table->size; i++)
585 if (GEM_DEBUG_WARN_ON(table->table[i].l3cc_value &
586 (L3_ESC(1) | L3_SCC(0x7))))
591 if (has_mocs(i915)) {
592 if (has_global_mocs(i915))
593 flags |= HAS_GLOBAL_MOCS;
595 flags |= HAS_ENGINE_MOCS;
598 flags |= HAS_RENDER_L3CC;
604 * Get control_value from MOCS entry taking into account when it's not used
605 * then if unused_entries_index is non-zero then its value will be returned
606 * otherwise I915_MOCS_PTE's value is returned in this case.
608 static u32 get_entry_control(const struct drm_i915_mocs_table *table,
611 if (index < table->size && table->table[index].used)
612 return table->table[index].control_value;
613 return table->table[table->unused_entries_index].control_value;
616 #define for_each_mocs(mocs, t, i) \
618 i < (t)->n_entries ? (mocs = get_entry_control((t), i)), 1 : 0;\
621 static void __init_mocs_table(struct intel_uncore *uncore,
622 const struct drm_i915_mocs_table *table,
628 drm_WARN_ONCE(&uncore->i915->drm, !table->unused_entries_index,
629 "Unused entries index should have been defined\n");
630 for_each_mocs(mocs, table, i)
631 intel_uncore_write_fw(uncore, _MMIO(addr + i * 4), mocs);
634 static u32 mocs_offset(const struct intel_engine_cs *engine)
636 static const u32 offset[] = {
637 [RCS0] = __GEN9_RCS0_MOCS0,
638 [VCS0] = __GEN9_VCS0_MOCS0,
639 [VCS1] = __GEN9_VCS1_MOCS0,
640 [VECS0] = __GEN9_VECS0_MOCS0,
641 [BCS0] = __GEN9_BCS0_MOCS0,
642 [VCS2] = __GEN11_VCS2_MOCS0,
645 GEM_BUG_ON(engine->id >= ARRAY_SIZE(offset));
646 return offset[engine->id];
649 static void init_mocs_table(struct intel_engine_cs *engine,
650 const struct drm_i915_mocs_table *table)
652 __init_mocs_table(engine->uncore, table, mocs_offset(engine));
656 * Get l3cc_value from MOCS entry taking into account when it's not used
657 * then if unused_entries_index is not zero then its value will be returned
658 * otherwise I915_MOCS_PTE's value is returned in this case.
660 static u16 get_entry_l3cc(const struct drm_i915_mocs_table *table,
663 if (index < table->size && table->table[index].used)
664 return table->table[index].l3cc_value;
665 return table->table[table->unused_entries_index].l3cc_value;
668 static u32 l3cc_combine(u16 low, u16 high)
670 return low | (u32)high << 16;
673 #define for_each_l3cc(l3cc, t, i) \
675 i < ((t)->n_entries + 1) / 2 ? \
676 (l3cc = l3cc_combine(get_entry_l3cc((t), 2 * i), \
677 get_entry_l3cc((t), 2 * i + 1))), 1 : \
681 static void init_l3cc_table(struct intel_gt *gt,
682 const struct drm_i915_mocs_table *table)
688 intel_gt_mcr_lock(gt, &flags);
689 for_each_l3cc(l3cc, table, i)
690 if (GRAPHICS_VER_FULL(gt->i915) >= IP_VER(12, 50))
691 intel_gt_mcr_multicast_write_fw(gt, XEHP_LNCFCMOCS(i), l3cc);
693 intel_uncore_write_fw(gt->uncore, GEN9_LNCFCMOCS(i), l3cc);
694 intel_gt_mcr_unlock(gt, flags);
697 void intel_mocs_init_engine(struct intel_engine_cs *engine)
699 struct drm_i915_mocs_table table;
702 /* Called under a blanket forcewake */
703 assert_forcewakes_active(engine->uncore, FORCEWAKE_ALL);
705 flags = get_mocs_settings(engine->i915, &table);
709 /* Platforms with global MOCS do not need per-engine initialization. */
710 if (flags & HAS_ENGINE_MOCS)
711 init_mocs_table(engine, &table);
713 if (flags & HAS_RENDER_L3CC && engine->class == RENDER_CLASS)
714 init_l3cc_table(engine->gt, &table);
717 static u32 global_mocs_offset(void)
719 return i915_mmio_reg_offset(GEN12_GLOBAL_MOCS(0));
722 void intel_set_mocs_index(struct intel_gt *gt)
724 struct drm_i915_mocs_table table;
726 get_mocs_settings(gt->i915, &table);
727 gt->mocs.uc_index = table.uc_index;
728 if (HAS_L3_CCS_READ(gt->i915))
729 gt->mocs.wb_index = table.wb_index;
732 void intel_mocs_init(struct intel_gt *gt)
734 struct drm_i915_mocs_table table;
738 * LLC and eDRAM control values are not applicable to dgfx
740 flags = get_mocs_settings(gt->i915, &table);
741 if (flags & HAS_GLOBAL_MOCS)
742 __init_mocs_table(gt->uncore, &table, global_mocs_offset());
745 * Initialize the L3CC table as part of mocs initalization to make
746 * sure the LNCFCMOCSx registers are programmed for the subsequent
747 * memory transactions including guc transactions
749 if (flags & HAS_RENDER_L3CC)
750 init_l3cc_table(gt, &table);
753 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
754 #include "selftest_mocs.c"