1
2
3
4
5
6#include <drm/intel-gtt.h>
7
8#include "intel_gt_debugfs.h"
9
10#include "gem/i915_gem_lmem.h"
11#include "i915_drv.h"
12#include "intel_context.h"
13#include "intel_gt.h"
14#include "intel_gt_buffer_pool.h"
15#include "intel_gt_clock_utils.h"
16#include "intel_gt_pm.h"
17#include "intel_gt_requests.h"
18#include "intel_migrate.h"
19#include "intel_mocs.h"
20#include "intel_pm.h"
21#include "intel_rc6.h"
22#include "intel_renderstate.h"
23#include "intel_rps.h"
24#include "intel_uncore.h"
25#include "shmem_utils.h"
26#include "pxp/intel_pxp.h"
27
28void __intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915)
29{
30 spin_lock_init(>->irq_lock);
31
32 mutex_init(>->tlb_invalidate_lock);
33
34 INIT_LIST_HEAD(>->closed_vma);
35 spin_lock_init(>->closed_lock);
36
37 init_llist_head(>->watchdog.list);
38 INIT_WORK(>->watchdog.work, intel_gt_watchdog_work);
39
40 intel_gt_init_buffer_pool(gt);
41 intel_gt_init_reset(gt);
42 intel_gt_init_requests(gt);
43 intel_gt_init_timelines(gt);
44 intel_gt_pm_init_early(gt);
45
46 intel_uc_init_early(>->uc);
47 intel_rps_init_early(>->rps);
48}
49
50void intel_gt_init_early(struct intel_gt *gt, struct drm_i915_private *i915)
51{
52 gt->i915 = i915;
53 gt->uncore = &i915->uncore;
54}
55
56int intel_gt_probe_lmem(struct intel_gt *gt)
57{
58 struct drm_i915_private *i915 = gt->i915;
59 struct intel_memory_region *mem;
60 int id;
61 int err;
62
63 mem = intel_gt_setup_lmem(gt);
64 if (mem == ERR_PTR(-ENODEV))
65 mem = intel_gt_setup_fake_lmem(gt);
66 if (IS_ERR(mem)) {
67 err = PTR_ERR(mem);
68 if (err == -ENODEV)
69 return 0;
70
71 drm_err(&i915->drm,
72 "Failed to setup region(%d) type=%d\n",
73 err, INTEL_MEMORY_LOCAL);
74 return err;
75 }
76
77 id = INTEL_REGION_LMEM;
78
79 mem->id = id;
80
81 intel_memory_region_set_name(mem, "local%u", mem->instance);
82
83 GEM_BUG_ON(!HAS_REGION(i915, id));
84 GEM_BUG_ON(i915->mm.regions[id]);
85 i915->mm.regions[id] = mem;
86
87 return 0;
88}
89
90void intel_gt_init_hw_early(struct intel_gt *gt, struct i915_ggtt *ggtt)
91{
92 gt->ggtt = ggtt;
93}
94
95static const struct intel_mmio_range icl_l3bank_steering_table[] = {
96 { 0x00B100, 0x00B3FF },
97 {},
98};
99
100static const struct intel_mmio_range xehpsdv_mslice_steering_table[] = {
101 { 0x004000, 0x004AFF },
102 { 0x00C800, 0x00CFFF },
103 { 0x00DD00, 0x00DDFF },
104 { 0x00E900, 0x00FFFF },
105 {},
106};
107
108static const struct intel_mmio_range xehpsdv_lncf_steering_table[] = {
109 { 0x00B000, 0x00B0FF },
110 { 0x00D800, 0x00D8FF },
111 {},
112};
113
114static const struct intel_mmio_range dg2_lncf_steering_table[] = {
115 { 0x00B000, 0x00B0FF },
116 { 0x00D880, 0x00D8FF },
117 {},
118};
119
120static u16 slicemask(struct intel_gt *gt, int count)
121{
122 u64 dss_mask = intel_sseu_get_subslices(>->info.sseu, 0);
123
124 return intel_slicemask_from_dssmask(dss_mask, count);
125}
126
127int intel_gt_init_mmio(struct intel_gt *gt)
128{
129 struct drm_i915_private *i915 = gt->i915;
130
131 intel_gt_init_clock_frequency(gt);
132
133 intel_uc_init_mmio(>->uc);
134 intel_sseu_info_init(gt);
135
136
137
138
139
140 if (HAS_MSLICES(i915))
141 gt->info.mslice_mask =
142 slicemask(gt, GEN_DSS_PER_MSLICE) |
143 (intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) &
144 GEN12_MEML3_EN_MASK);
145
146 if (IS_DG2(i915)) {
147 gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table;
148 gt->steering_table[LNCF] = dg2_lncf_steering_table;
149 } else if (IS_XEHPSDV(i915)) {
150 gt->steering_table[MSLICE] = xehpsdv_mslice_steering_table;
151 gt->steering_table[LNCF] = xehpsdv_lncf_steering_table;
152 } else if (GRAPHICS_VER(i915) >= 11 &&
153 GRAPHICS_VER_FULL(i915) < IP_VER(12, 50)) {
154 gt->steering_table[L3BANK] = icl_l3bank_steering_table;
155 gt->info.l3bank_mask =
156 ~intel_uncore_read(gt->uncore, GEN10_MIRROR_FUSE3) &
157 GEN10_L3BANK_MASK;
158 } else if (HAS_MSLICES(i915)) {
159 MISSING_CASE(INTEL_INFO(i915)->platform);
160 }
161
162 return intel_engines_init_mmio(gt);
163}
164
165static void init_unused_ring(struct intel_gt *gt, u32 base)
166{
167 struct intel_uncore *uncore = gt->uncore;
168
169 intel_uncore_write(uncore, RING_CTL(base), 0);
170 intel_uncore_write(uncore, RING_HEAD(base), 0);
171 intel_uncore_write(uncore, RING_TAIL(base), 0);
172 intel_uncore_write(uncore, RING_START(base), 0);
173}
174
175static void init_unused_rings(struct intel_gt *gt)
176{
177 struct drm_i915_private *i915 = gt->i915;
178
179 if (IS_I830(i915)) {
180 init_unused_ring(gt, PRB1_BASE);
181 init_unused_ring(gt, SRB0_BASE);
182 init_unused_ring(gt, SRB1_BASE);
183 init_unused_ring(gt, SRB2_BASE);
184 init_unused_ring(gt, SRB3_BASE);
185 } else if (GRAPHICS_VER(i915) == 2) {
186 init_unused_ring(gt, SRB0_BASE);
187 init_unused_ring(gt, SRB1_BASE);
188 } else if (GRAPHICS_VER(i915) == 3) {
189 init_unused_ring(gt, PRB1_BASE);
190 init_unused_ring(gt, PRB2_BASE);
191 }
192}
193
194int intel_gt_init_hw(struct intel_gt *gt)
195{
196 struct drm_i915_private *i915 = gt->i915;
197 struct intel_uncore *uncore = gt->uncore;
198 int ret;
199
200 gt->last_init_time = ktime_get();
201
202
203 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
204
205 if (HAS_EDRAM(i915) && GRAPHICS_VER(i915) < 9)
206 intel_uncore_rmw(uncore, HSW_IDICR, 0, IDIHASHMSK(0xf));
207
208 if (IS_HASWELL(i915))
209 intel_uncore_write(uncore,
210 MI_PREDICATE_RESULT_2,
211 IS_HSW_GT3(i915) ?
212 LOWER_SLICE_ENABLED : LOWER_SLICE_DISABLED);
213
214
215 intel_gt_apply_workarounds(gt);
216
217 intel_gt_verify_workarounds(gt, "init");
218
219 intel_gt_init_swizzling(gt);
220
221
222
223
224
225
226
227 init_unused_rings(gt);
228
229 ret = i915_ppgtt_init_hw(gt);
230 if (ret) {
231 DRM_ERROR("Enabling PPGTT failed (%d)\n", ret);
232 goto out;
233 }
234
235
236 ret = intel_uc_init_hw(>->uc);
237 if (ret) {
238 i915_probe_error(i915, "Enabling uc failed (%d)\n", ret);
239 goto out;
240 }
241
242 intel_mocs_init(gt);
243
244out:
245 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
246 return ret;
247}
248
249static void rmw_set(struct intel_uncore *uncore, i915_reg_t reg, u32 set)
250{
251 intel_uncore_rmw(uncore, reg, 0, set);
252}
253
254static void rmw_clear(struct intel_uncore *uncore, i915_reg_t reg, u32 clr)
255{
256 intel_uncore_rmw(uncore, reg, clr, 0);
257}
258
259static void clear_register(struct intel_uncore *uncore, i915_reg_t reg)
260{
261 intel_uncore_rmw(uncore, reg, 0, 0);
262}
263
264static void gen6_clear_engine_error_register(struct intel_engine_cs *engine)
265{
266 GEN6_RING_FAULT_REG_RMW(engine, RING_FAULT_VALID, 0);
267 GEN6_RING_FAULT_REG_POSTING_READ(engine);
268}
269
270void
271intel_gt_clear_error_registers(struct intel_gt *gt,
272 intel_engine_mask_t engine_mask)
273{
274 struct drm_i915_private *i915 = gt->i915;
275 struct intel_uncore *uncore = gt->uncore;
276 u32 eir;
277
278 if (GRAPHICS_VER(i915) != 2)
279 clear_register(uncore, PGTBL_ER);
280
281 if (GRAPHICS_VER(i915) < 4)
282 clear_register(uncore, IPEIR(RENDER_RING_BASE));
283 else
284 clear_register(uncore, IPEIR_I965);
285
286 clear_register(uncore, EIR);
287 eir = intel_uncore_read(uncore, EIR);
288 if (eir) {
289
290
291
292
293 DRM_DEBUG_DRIVER("EIR stuck: 0x%08x, masking\n", eir);
294 rmw_set(uncore, EMR, eir);
295 intel_uncore_write(uncore, GEN2_IIR,
296 I915_MASTER_ERROR_INTERRUPT);
297 }
298
299 if (GRAPHICS_VER(i915) >= 12) {
300 rmw_clear(uncore, GEN12_RING_FAULT_REG, RING_FAULT_VALID);
301 intel_uncore_posting_read(uncore, GEN12_RING_FAULT_REG);
302 } else if (GRAPHICS_VER(i915) >= 8) {
303 rmw_clear(uncore, GEN8_RING_FAULT_REG, RING_FAULT_VALID);
304 intel_uncore_posting_read(uncore, GEN8_RING_FAULT_REG);
305 } else if (GRAPHICS_VER(i915) >= 6) {
306 struct intel_engine_cs *engine;
307 enum intel_engine_id id;
308
309 for_each_engine_masked(engine, gt, engine_mask, id)
310 gen6_clear_engine_error_register(engine);
311 }
312}
313
314static void gen6_check_faults(struct intel_gt *gt)
315{
316 struct intel_engine_cs *engine;
317 enum intel_engine_id id;
318 u32 fault;
319
320 for_each_engine(engine, gt, id) {
321 fault = GEN6_RING_FAULT_REG_READ(engine);
322 if (fault & RING_FAULT_VALID) {
323 drm_dbg(&engine->i915->drm, "Unexpected fault\n"
324 "\tAddr: 0x%08lx\n"
325 "\tAddress space: %s\n"
326 "\tSource ID: %d\n"
327 "\tType: %d\n",
328 fault & PAGE_MASK,
329 fault & RING_FAULT_GTTSEL_MASK ?
330 "GGTT" : "PPGTT",
331 RING_FAULT_SRCID(fault),
332 RING_FAULT_FAULT_TYPE(fault));
333 }
334 }
335}
336
337static void gen8_check_faults(struct intel_gt *gt)
338{
339 struct intel_uncore *uncore = gt->uncore;
340 i915_reg_t fault_reg, fault_data0_reg, fault_data1_reg;
341 u32 fault;
342
343 if (GRAPHICS_VER(gt->i915) >= 12) {
344 fault_reg = GEN12_RING_FAULT_REG;
345 fault_data0_reg = GEN12_FAULT_TLB_DATA0;
346 fault_data1_reg = GEN12_FAULT_TLB_DATA1;
347 } else {
348 fault_reg = GEN8_RING_FAULT_REG;
349 fault_data0_reg = GEN8_FAULT_TLB_DATA0;
350 fault_data1_reg = GEN8_FAULT_TLB_DATA1;
351 }
352
353 fault = intel_uncore_read(uncore, fault_reg);
354 if (fault & RING_FAULT_VALID) {
355 u32 fault_data0, fault_data1;
356 u64 fault_addr;
357
358 fault_data0 = intel_uncore_read(uncore, fault_data0_reg);
359 fault_data1 = intel_uncore_read(uncore, fault_data1_reg);
360
361 fault_addr = ((u64)(fault_data1 & FAULT_VA_HIGH_BITS) << 44) |
362 ((u64)fault_data0 << 12);
363
364 drm_dbg(&uncore->i915->drm, "Unexpected fault\n"
365 "\tAddr: 0x%08x_%08x\n"
366 "\tAddress space: %s\n"
367 "\tEngine ID: %d\n"
368 "\tSource ID: %d\n"
369 "\tType: %d\n",
370 upper_32_bits(fault_addr), lower_32_bits(fault_addr),
371 fault_data1 & FAULT_GTT_SEL ? "GGTT" : "PPGTT",
372 GEN8_RING_FAULT_ENGINE_ID(fault),
373 RING_FAULT_SRCID(fault),
374 RING_FAULT_FAULT_TYPE(fault));
375 }
376}
377
378void intel_gt_check_and_clear_faults(struct intel_gt *gt)
379{
380 struct drm_i915_private *i915 = gt->i915;
381
382
383 if (GRAPHICS_VER(i915) >= 8)
384 gen8_check_faults(gt);
385 else if (GRAPHICS_VER(i915) >= 6)
386 gen6_check_faults(gt);
387 else
388 return;
389
390 intel_gt_clear_error_registers(gt, ALL_ENGINES);
391}
392
393void intel_gt_flush_ggtt_writes(struct intel_gt *gt)
394{
395 struct intel_uncore *uncore = gt->uncore;
396 intel_wakeref_t wakeref;
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417 wmb();
418
419 if (INTEL_INFO(gt->i915)->has_coherent_ggtt)
420 return;
421
422 intel_gt_chipset_flush(gt);
423
424 with_intel_runtime_pm_if_in_use(uncore->rpm, wakeref) {
425 unsigned long flags;
426
427 spin_lock_irqsave(&uncore->lock, flags);
428 intel_uncore_posting_read_fw(uncore,
429 RING_HEAD(RENDER_RING_BASE));
430 spin_unlock_irqrestore(&uncore->lock, flags);
431 }
432}
433
434void intel_gt_chipset_flush(struct intel_gt *gt)
435{
436 wmb();
437 if (GRAPHICS_VER(gt->i915) < 6)
438 intel_gtt_chipset_flush();
439}
440
441void intel_gt_driver_register(struct intel_gt *gt)
442{
443 intel_rps_driver_register(>->rps);
444
445 intel_gt_debugfs_register(gt);
446}
447
448static int intel_gt_init_scratch(struct intel_gt *gt, unsigned int size)
449{
450 struct drm_i915_private *i915 = gt->i915;
451 struct drm_i915_gem_object *obj;
452 struct i915_vma *vma;
453 int ret;
454
455 obj = i915_gem_object_create_lmem(i915, size, I915_BO_ALLOC_VOLATILE);
456 if (IS_ERR(obj))
457 obj = i915_gem_object_create_stolen(i915, size);
458 if (IS_ERR(obj))
459 obj = i915_gem_object_create_internal(i915, size);
460 if (IS_ERR(obj)) {
461 drm_err(&i915->drm, "Failed to allocate scratch page\n");
462 return PTR_ERR(obj);
463 }
464
465 vma = i915_vma_instance(obj, >->ggtt->vm, NULL);
466 if (IS_ERR(vma)) {
467 ret = PTR_ERR(vma);
468 goto err_unref;
469 }
470
471 ret = i915_ggtt_pin(vma, NULL, 0, PIN_HIGH);
472 if (ret)
473 goto err_unref;
474
475 gt->scratch = i915_vma_make_unshrinkable(vma);
476
477 return 0;
478
479err_unref:
480 i915_gem_object_put(obj);
481 return ret;
482}
483
484static void intel_gt_fini_scratch(struct intel_gt *gt)
485{
486 i915_vma_unpin_and_release(>->scratch, 0);
487}
488
489static struct i915_address_space *kernel_vm(struct intel_gt *gt)
490{
491 if (INTEL_PPGTT(gt->i915) > INTEL_PPGTT_ALIASING)
492 return &i915_ppgtt_create(gt, I915_BO_ALLOC_PM_EARLY)->vm;
493 else
494 return i915_vm_get(>->ggtt->vm);
495}
496
497static int __engines_record_defaults(struct intel_gt *gt)
498{
499 struct i915_request *requests[I915_NUM_ENGINES] = {};
500 struct intel_engine_cs *engine;
501 enum intel_engine_id id;
502 int err = 0;
503
504
505
506
507
508
509
510
511
512
513 for_each_engine(engine, gt, id) {
514 struct intel_renderstate so;
515 struct intel_context *ce;
516 struct i915_request *rq;
517
518
519 GEM_BUG_ON(!engine->kernel_context);
520
521 ce = intel_context_create(engine);
522 if (IS_ERR(ce)) {
523 err = PTR_ERR(ce);
524 goto out;
525 }
526
527 err = intel_renderstate_init(&so, ce);
528 if (err)
529 goto err;
530
531 rq = i915_request_create(ce);
532 if (IS_ERR(rq)) {
533 err = PTR_ERR(rq);
534 goto err_fini;
535 }
536
537 err = intel_engine_emit_ctx_wa(rq);
538 if (err)
539 goto err_rq;
540
541 err = intel_renderstate_emit(&so, rq);
542 if (err)
543 goto err_rq;
544
545err_rq:
546 requests[id] = i915_request_get(rq);
547 i915_request_add(rq);
548err_fini:
549 intel_renderstate_fini(&so, ce);
550err:
551 if (err) {
552 intel_context_put(ce);
553 goto out;
554 }
555 }
556
557
558 if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME) {
559 err = -EIO;
560 goto out;
561 }
562
563 for (id = 0; id < ARRAY_SIZE(requests); id++) {
564 struct i915_request *rq;
565 struct file *state;
566
567 rq = requests[id];
568 if (!rq)
569 continue;
570
571 if (rq->fence.error) {
572 err = -EIO;
573 goto out;
574 }
575
576 GEM_BUG_ON(!test_bit(CONTEXT_ALLOC_BIT, &rq->context->flags));
577 if (!rq->context->state)
578 continue;
579
580
581 state = shmem_create_from_object(rq->context->state->obj);
582 if (IS_ERR(state)) {
583 err = PTR_ERR(state);
584 goto out;
585 }
586 rq->engine->default_state = state;
587 }
588
589out:
590
591
592
593
594
595 if (err)
596 intel_gt_set_wedged(gt);
597
598 for (id = 0; id < ARRAY_SIZE(requests); id++) {
599 struct intel_context *ce;
600 struct i915_request *rq;
601
602 rq = requests[id];
603 if (!rq)
604 continue;
605
606 ce = rq->context;
607 i915_request_put(rq);
608 intel_context_put(ce);
609 }
610 return err;
611}
612
613static int __engines_verify_workarounds(struct intel_gt *gt)
614{
615 struct intel_engine_cs *engine;
616 enum intel_engine_id id;
617 int err = 0;
618
619 if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_GEM))
620 return 0;
621
622 for_each_engine(engine, gt, id) {
623 if (intel_engine_verify_workarounds(engine, "load"))
624 err = -EIO;
625 }
626
627
628 if (intel_gt_wait_for_idle(gt, I915_GEM_IDLE_TIMEOUT) == -ETIME)
629 err = -EIO;
630
631 return err;
632}
633
634static void __intel_gt_disable(struct intel_gt *gt)
635{
636 intel_gt_set_wedged_on_fini(gt);
637
638 intel_gt_suspend_prepare(gt);
639 intel_gt_suspend_late(gt);
640
641 GEM_BUG_ON(intel_gt_pm_is_awake(gt));
642}
643
644int intel_gt_wait_for_idle(struct intel_gt *gt, long timeout)
645{
646 long remaining_timeout;
647
648
649 if (!intel_gt_pm_is_awake(gt))
650 return 0;
651
652 while ((timeout = intel_gt_retire_requests_timeout(gt, timeout,
653 &remaining_timeout)) > 0) {
654 cond_resched();
655 if (signal_pending(current))
656 return -EINTR;
657 }
658
659 return timeout ? timeout : intel_uc_wait_for_idle(>->uc,
660 remaining_timeout);
661}
662
663int intel_gt_init(struct intel_gt *gt)
664{
665 int err;
666
667 err = i915_inject_probe_error(gt->i915, -ENODEV);
668 if (err)
669 return err;
670
671 intel_gt_init_workarounds(gt);
672
673
674
675
676
677
678
679
680 intel_uncore_forcewake_get(gt->uncore, FORCEWAKE_ALL);
681
682 err = intel_gt_init_scratch(gt,
683 GRAPHICS_VER(gt->i915) == 2 ? SZ_256K : SZ_4K);
684 if (err)
685 goto out_fw;
686
687 intel_gt_pm_init(gt);
688
689 gt->vm = kernel_vm(gt);
690 if (!gt->vm) {
691 err = -ENOMEM;
692 goto err_pm;
693 }
694
695 intel_set_mocs_index(gt);
696
697 err = intel_engines_init(gt);
698 if (err)
699 goto err_engines;
700
701 err = intel_uc_init(>->uc);
702 if (err)
703 goto err_engines;
704
705 err = intel_gt_resume(gt);
706 if (err)
707 goto err_uc_init;
708
709 err = __engines_record_defaults(gt);
710 if (err)
711 goto err_gt;
712
713 err = __engines_verify_workarounds(gt);
714 if (err)
715 goto err_gt;
716
717 intel_uc_init_late(>->uc);
718
719 err = i915_inject_probe_error(gt->i915, -EIO);
720 if (err)
721 goto err_gt;
722
723 intel_migrate_init(>->migrate, gt);
724
725 intel_pxp_init(>->pxp);
726
727 goto out_fw;
728err_gt:
729 __intel_gt_disable(gt);
730 intel_uc_fini_hw(>->uc);
731err_uc_init:
732 intel_uc_fini(>->uc);
733err_engines:
734 intel_engines_release(gt);
735 i915_vm_put(fetch_and_zero(>->vm));
736err_pm:
737 intel_gt_pm_fini(gt);
738 intel_gt_fini_scratch(gt);
739out_fw:
740 if (err)
741 intel_gt_set_wedged_on_init(gt);
742 intel_uncore_forcewake_put(gt->uncore, FORCEWAKE_ALL);
743 return err;
744}
745
746void intel_gt_driver_remove(struct intel_gt *gt)
747{
748 __intel_gt_disable(gt);
749
750 intel_migrate_fini(>->migrate);
751 intel_uc_driver_remove(>->uc);
752
753 intel_engines_release(gt);
754
755 intel_gt_flush_buffer_pool(gt);
756}
757
758void intel_gt_driver_unregister(struct intel_gt *gt)
759{
760 intel_wakeref_t wakeref;
761
762 intel_rps_driver_unregister(>->rps);
763
764 intel_pxp_fini(>->pxp);
765
766
767
768
769
770
771 intel_gt_set_wedged_on_fini(gt);
772
773
774 with_intel_runtime_pm(gt->uncore->rpm, wakeref)
775 __intel_gt_reset(gt, ALL_ENGINES);
776}
777
778void intel_gt_driver_release(struct intel_gt *gt)
779{
780 struct i915_address_space *vm;
781
782 vm = fetch_and_zero(>->vm);
783 if (vm)
784 i915_vm_put(vm);
785
786 intel_wa_list_free(>->wa_list);
787 intel_gt_pm_fini(gt);
788 intel_gt_fini_scratch(gt);
789 intel_gt_fini_buffer_pool(gt);
790}
791
792void intel_gt_driver_late_release(struct intel_gt *gt)
793{
794
795 rcu_barrier();
796
797 intel_uc_driver_late_release(>->uc);
798 intel_gt_fini_requests(gt);
799 intel_gt_fini_reset(gt);
800 intel_gt_fini_timelines(gt);
801 intel_engines_free(gt);
802}
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818static bool intel_gt_reg_needs_read_steering(struct intel_gt *gt,
819 i915_reg_t reg,
820 enum intel_steering_type type)
821{
822 const u32 offset = i915_mmio_reg_offset(reg);
823 const struct intel_mmio_range *entry;
824
825 if (likely(!intel_gt_needs_read_steering(gt, type)))
826 return false;
827
828 for (entry = gt->steering_table[type]; entry->end; entry++) {
829 if (offset >= entry->start && offset <= entry->end)
830 return true;
831 }
832
833 return false;
834}
835
836
837
838
839
840
841
842
843
844
845
846static void intel_gt_get_valid_steering(struct intel_gt *gt,
847 enum intel_steering_type type,
848 u8 *sliceid, u8 *subsliceid)
849{
850 switch (type) {
851 case L3BANK:
852 GEM_DEBUG_WARN_ON(!gt->info.l3bank_mask);
853
854 *sliceid = 0;
855 *subsliceid = __ffs(gt->info.l3bank_mask);
856 break;
857 case MSLICE:
858 GEM_DEBUG_WARN_ON(!gt->info.mslice_mask);
859
860 *sliceid = __ffs(gt->info.mslice_mask);
861 *subsliceid = 0;
862 break;
863 case LNCF:
864 GEM_DEBUG_WARN_ON(!gt->info.mslice_mask);
865
866
867
868
869
870 *sliceid = __ffs(gt->info.mslice_mask) << 1;
871 *subsliceid = 0;
872 break;
873 default:
874 MISSING_CASE(type);
875 *sliceid = 0;
876 *subsliceid = 0;
877 }
878}
879
880
881
882
883
884
885
886
887
888
889
890
891u32 intel_gt_read_register_fw(struct intel_gt *gt, i915_reg_t reg)
892{
893 int type;
894 u8 sliceid, subsliceid;
895
896 for (type = 0; type < NUM_STEERING_TYPES; type++) {
897 if (intel_gt_reg_needs_read_steering(gt, reg, type)) {
898 intel_gt_get_valid_steering(gt, type, &sliceid,
899 &subsliceid);
900 return intel_uncore_read_with_mcr_steering_fw(gt->uncore,
901 reg,
902 sliceid,
903 subsliceid);
904 }
905 }
906
907 return intel_uncore_read_fw(gt->uncore, reg);
908}
909
910void intel_gt_info_print(const struct intel_gt_info *info,
911 struct drm_printer *p)
912{
913 drm_printf(p, "available engines: %x\n", info->engine_mask);
914
915 intel_sseu_dump(&info->sseu, p);
916}
917
918struct reg_and_bit {
919 i915_reg_t reg;
920 u32 bit;
921};
922
923static struct reg_and_bit
924get_reg_and_bit(const struct intel_engine_cs *engine, const bool gen8,
925 const i915_reg_t *regs, const unsigned int num)
926{
927 const unsigned int class = engine->class;
928 struct reg_and_bit rb = { };
929
930 if (drm_WARN_ON_ONCE(&engine->i915->drm,
931 class >= num || !regs[class].reg))
932 return rb;
933
934 rb.reg = regs[class];
935 if (gen8 && class == VIDEO_DECODE_CLASS)
936 rb.reg.reg += 4 * engine->instance;
937 else
938 rb.bit = engine->instance;
939
940 rb.bit = BIT(rb.bit);
941
942 return rb;
943}
944
945void intel_gt_invalidate_tlbs(struct intel_gt *gt)
946{
947 static const i915_reg_t gen8_regs[] = {
948 [RENDER_CLASS] = GEN8_RTCR,
949 [VIDEO_DECODE_CLASS] = GEN8_M1TCR,
950 [VIDEO_ENHANCEMENT_CLASS] = GEN8_VTCR,
951 [COPY_ENGINE_CLASS] = GEN8_BTCR,
952 };
953 static const i915_reg_t gen12_regs[] = {
954 [RENDER_CLASS] = GEN12_GFX_TLB_INV_CR,
955 [VIDEO_DECODE_CLASS] = GEN12_VD_TLB_INV_CR,
956 [VIDEO_ENHANCEMENT_CLASS] = GEN12_VE_TLB_INV_CR,
957 [COPY_ENGINE_CLASS] = GEN12_BLT_TLB_INV_CR,
958 };
959 struct drm_i915_private *i915 = gt->i915;
960 struct intel_uncore *uncore = gt->uncore;
961 struct intel_engine_cs *engine;
962 enum intel_engine_id id;
963 const i915_reg_t *regs;
964 unsigned int num = 0;
965
966 if (I915_SELFTEST_ONLY(gt->awake == -ENODEV))
967 return;
968
969 if (GRAPHICS_VER(i915) == 12) {
970 regs = gen12_regs;
971 num = ARRAY_SIZE(gen12_regs);
972 } else if (GRAPHICS_VER(i915) >= 8 && GRAPHICS_VER(i915) <= 11) {
973 regs = gen8_regs;
974 num = ARRAY_SIZE(gen8_regs);
975 } else if (GRAPHICS_VER(i915) < 8) {
976 return;
977 }
978
979 if (drm_WARN_ONCE(&i915->drm, !num,
980 "Platform does not implement TLB invalidation!"))
981 return;
982
983 GEM_TRACE("\n");
984
985 assert_rpm_wakelock_held(&i915->runtime_pm);
986
987 mutex_lock(>->tlb_invalidate_lock);
988 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
989
990 for_each_engine(engine, gt, id) {
991
992
993
994
995
996 const unsigned int timeout_us = 100;
997 const unsigned int timeout_ms = 4;
998 struct reg_and_bit rb;
999
1000 rb = get_reg_and_bit(engine, regs == gen8_regs, regs, num);
1001 if (!i915_mmio_reg_offset(rb.reg))
1002 continue;
1003
1004 intel_uncore_write_fw(uncore, rb.reg, rb.bit);
1005 if (__intel_wait_for_register_fw(uncore,
1006 rb.reg, rb.bit, 0,
1007 timeout_us, timeout_ms,
1008 NULL))
1009 drm_err_ratelimited(>->i915->drm,
1010 "%s TLB invalidation did not complete in %ums!\n",
1011 engine->name, timeout_ms);
1012 }
1013
1014
1015
1016
1017
1018
1019
1020 intel_uncore_forcewake_put_delayed(uncore, FORCEWAKE_ALL);
1021 mutex_unlock(>->tlb_invalidate_lock);
1022}
1023