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1/*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include <drm/drm_managed.h>
25#include <linux/pm_runtime.h>
26
27#include "gt/intel_gt.h"
28#include "gt/intel_engine_regs.h"
29#include "gt/intel_gt_regs.h"
30
31#include "i915_drv.h"
32#include "i915_iosf_mbi.h"
33#include "i915_reg.h"
34#include "i915_trace.h"
35#include "i915_vgpu.h"
36
37#define FORCEWAKE_ACK_TIMEOUT_MS 50
38#define GT_FIFO_TIMEOUT_MS 10
39
40#define __raw_posting_read(...) ((void)__raw_uncore_read32(__VA_ARGS__))
41
42static void
43fw_domains_get(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
44{
45 uncore->fw_get_funcs->force_wake_get(uncore, fw_domains);
46}
47
48void
49intel_uncore_mmio_debug_init_early(struct drm_i915_private *i915)
50{
51 spin_lock_init(&i915->mmio_debug.lock);
52 i915->mmio_debug.unclaimed_mmio_check = 1;
53
54 i915->uncore.debug = &i915->mmio_debug;
55}
56
57static void mmio_debug_suspend(struct intel_uncore *uncore)
58{
59 if (!uncore->debug)
60 return;
61
62 spin_lock(&uncore->debug->lock);
63
64 /* Save and disable mmio debugging for the user bypass */
65 if (!uncore->debug->suspend_count++) {
66 uncore->debug->saved_mmio_check = uncore->debug->unclaimed_mmio_check;
67 uncore->debug->unclaimed_mmio_check = 0;
68 }
69
70 spin_unlock(&uncore->debug->lock);
71}
72
73static bool check_for_unclaimed_mmio(struct intel_uncore *uncore);
74
75static void mmio_debug_resume(struct intel_uncore *uncore)
76{
77 if (!uncore->debug)
78 return;
79
80 spin_lock(&uncore->debug->lock);
81
82 if (!--uncore->debug->suspend_count)
83 uncore->debug->unclaimed_mmio_check = uncore->debug->saved_mmio_check;
84
85 if (check_for_unclaimed_mmio(uncore))
86 drm_info(&uncore->i915->drm,
87 "Invalid mmio detected during user access\n");
88
89 spin_unlock(&uncore->debug->lock);
90}
91
92static const char * const forcewake_domain_names[] = {
93 "render",
94 "gt",
95 "media",
96 "vdbox0",
97 "vdbox1",
98 "vdbox2",
99 "vdbox3",
100 "vdbox4",
101 "vdbox5",
102 "vdbox6",
103 "vdbox7",
104 "vebox0",
105 "vebox1",
106 "vebox2",
107 "vebox3",
108 "gsc",
109};
110
111const char *
112intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id)
113{
114 BUILD_BUG_ON(ARRAY_SIZE(forcewake_domain_names) != FW_DOMAIN_ID_COUNT);
115
116 if (id >= 0 && id < FW_DOMAIN_ID_COUNT)
117 return forcewake_domain_names[id];
118
119 WARN_ON(id);
120
121 return "unknown";
122}
123
124#define fw_ack(d) readl((d)->reg_ack)
125#define fw_set(d, val) writel(_MASKED_BIT_ENABLE((val)), (d)->reg_set)
126#define fw_clear(d, val) writel(_MASKED_BIT_DISABLE((val)), (d)->reg_set)
127
128static inline void
129fw_domain_reset(const struct intel_uncore_forcewake_domain *d)
130{
131 /*
132 * We don't really know if the powerwell for the forcewake domain we are
133 * trying to reset here does exist at this point (engines could be fused
134 * off in ICL+), so no waiting for acks
135 */
136 /* WaRsClearFWBitsAtReset */
137 if (GRAPHICS_VER(d->uncore->i915) >= 12)
138 fw_clear(d, 0xefff);
139 else
140 fw_clear(d, 0xffff);
141}
142
143static inline void
144fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
145{
146 GEM_BUG_ON(d->uncore->fw_domains_timer & d->mask);
147 d->uncore->fw_domains_timer |= d->mask;
148 d->wake_count++;
149 hrtimer_start_range_ns(&d->timer,
150 NSEC_PER_MSEC,
151 NSEC_PER_MSEC,
152 HRTIMER_MODE_REL);
153}
154
155static inline int
156__wait_for_ack(const struct intel_uncore_forcewake_domain *d,
157 const u32 ack,
158 const u32 value)
159{
160 return wait_for_atomic((fw_ack(d) & ack) == value,
161 FORCEWAKE_ACK_TIMEOUT_MS);
162}
163
164static inline int
165wait_ack_clear(const struct intel_uncore_forcewake_domain *d,
166 const u32 ack)
167{
168 return __wait_for_ack(d, ack, 0);
169}
170
171static inline int
172wait_ack_set(const struct intel_uncore_forcewake_domain *d,
173 const u32 ack)
174{
175 return __wait_for_ack(d, ack, ack);
176}
177
178static inline void
179fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d)
180{
181 if (!wait_ack_clear(d, FORCEWAKE_KERNEL))
182 return;
183
184 if (fw_ack(d) == ~0) {
185 drm_err(&d->uncore->i915->drm,
186 "%s: MMIO unreliable (forcewake register returns 0xFFFFFFFF)!\n",
187 intel_uncore_forcewake_domain_to_str(d->id));
188 intel_gt_set_wedged_async(d->uncore->gt);
189 } else {
190 drm_err(&d->uncore->i915->drm,
191 "%s: timed out waiting for forcewake ack to clear.\n",
192 intel_uncore_forcewake_domain_to_str(d->id));
193 }
194
195 add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */
196}
197
198enum ack_type {
199 ACK_CLEAR = 0,
200 ACK_SET
201};
202
203static int
204fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d,
205 const enum ack_type type)
206{
207 const u32 ack_bit = FORCEWAKE_KERNEL;
208 const u32 value = type == ACK_SET ? ack_bit : 0;
209 unsigned int pass;
210 bool ack_detected;
211
212 /*
213 * There is a possibility of driver's wake request colliding
214 * with hardware's own wake requests and that can cause
215 * hardware to not deliver the driver's ack message.
216 *
217 * Use a fallback bit toggle to kick the gpu state machine
218 * in the hope that the original ack will be delivered along with
219 * the fallback ack.
220 *
221 * This workaround is described in HSDES #1604254524 and it's known as:
222 * WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl
223 * although the name is a bit misleading.
224 */
225
226 pass = 1;
227 do {
228 wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK);
229
230 fw_set(d, FORCEWAKE_KERNEL_FALLBACK);
231 /* Give gt some time to relax before the polling frenzy */
232 udelay(10 * pass);
233 wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK);
234
235 ack_detected = (fw_ack(d) & ack_bit) == value;
236
237 fw_clear(d, FORCEWAKE_KERNEL_FALLBACK);
238 } while (!ack_detected && pass++ < 10);
239
240 drm_dbg(&d->uncore->i915->drm,
241 "%s had to use fallback to %s ack, 0x%x (passes %u)\n",
242 intel_uncore_forcewake_domain_to_str(d->id),
243 type == ACK_SET ? "set" : "clear",
244 fw_ack(d),
245 pass);
246
247 return ack_detected ? 0 : -ETIMEDOUT;
248}
249
250static inline void
251fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d)
252{
253 if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL)))
254 return;
255
256 if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR))
257 fw_domain_wait_ack_clear(d);
258}
259
260static inline void
261fw_domain_get(const struct intel_uncore_forcewake_domain *d)
262{
263 fw_set(d, FORCEWAKE_KERNEL);
264}
265
266static inline void
267fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d)
268{
269 if (wait_ack_set(d, FORCEWAKE_KERNEL)) {
270 drm_err(&d->uncore->i915->drm,
271 "%s: timed out waiting for forcewake ack request.\n",
272 intel_uncore_forcewake_domain_to_str(d->id));
273 add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */
274 }
275}
276
277static inline void
278fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d)
279{
280 if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL)))
281 return;
282
283 if (fw_domain_wait_ack_with_fallback(d, ACK_SET))
284 fw_domain_wait_ack_set(d);
285}
286
287static inline void
288fw_domain_put(const struct intel_uncore_forcewake_domain *d)
289{
290 fw_clear(d, FORCEWAKE_KERNEL);
291}
292
293static void
294fw_domains_get_normal(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
295{
296 struct intel_uncore_forcewake_domain *d;
297 unsigned int tmp;
298
299 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
300
301 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
302 fw_domain_wait_ack_clear(d);
303 fw_domain_get(d);
304 }
305
306 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
307 fw_domain_wait_ack_set(d);
308
309 uncore->fw_domains_active |= fw_domains;
310}
311
312static void
313fw_domains_get_with_fallback(struct intel_uncore *uncore,
314 enum forcewake_domains fw_domains)
315{
316 struct intel_uncore_forcewake_domain *d;
317 unsigned int tmp;
318
319 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
320
321 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
322 fw_domain_wait_ack_clear_fallback(d);
323 fw_domain_get(d);
324 }
325
326 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
327 fw_domain_wait_ack_set_fallback(d);
328
329 uncore->fw_domains_active |= fw_domains;
330}
331
332static void
333fw_domains_put(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
334{
335 struct intel_uncore_forcewake_domain *d;
336 unsigned int tmp;
337
338 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
339
340 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
341 fw_domain_put(d);
342
343 uncore->fw_domains_active &= ~fw_domains;
344}
345
346static void
347fw_domains_reset(struct intel_uncore *uncore,
348 enum forcewake_domains fw_domains)
349{
350 struct intel_uncore_forcewake_domain *d;
351 unsigned int tmp;
352
353 if (!fw_domains)
354 return;
355
356 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
357
358 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
359 fw_domain_reset(d);
360}
361
362static inline u32 gt_thread_status(struct intel_uncore *uncore)
363{
364 u32 val;
365
366 val = __raw_uncore_read32(uncore, GEN6_GT_THREAD_STATUS_REG);
367 val &= GEN6_GT_THREAD_STATUS_CORE_MASK;
368
369 return val;
370}
371
372static void __gen6_gt_wait_for_thread_c0(struct intel_uncore *uncore)
373{
374 /*
375 * w/a for a sporadic read returning 0 by waiting for the GT
376 * thread to wake up.
377 */
378 drm_WARN_ONCE(&uncore->i915->drm,
379 wait_for_atomic_us(gt_thread_status(uncore) == 0, 5000),
380 "GT thread status wait timed out\n");
381}
382
383static void fw_domains_get_with_thread_status(struct intel_uncore *uncore,
384 enum forcewake_domains fw_domains)
385{
386 fw_domains_get_normal(uncore, fw_domains);
387
388 /* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */
389 __gen6_gt_wait_for_thread_c0(uncore);
390}
391
392static inline u32 fifo_free_entries(struct intel_uncore *uncore)
393{
394 u32 count = __raw_uncore_read32(uncore, GTFIFOCTL);
395
396 return count & GT_FIFO_FREE_ENTRIES_MASK;
397}
398
399static void __gen6_gt_wait_for_fifo(struct intel_uncore *uncore)
400{
401 u32 n;
402
403 /* On VLV, FIFO will be shared by both SW and HW.
404 * So, we need to read the FREE_ENTRIES everytime */
405 if (IS_VALLEYVIEW(uncore->i915))
406 n = fifo_free_entries(uncore);
407 else
408 n = uncore->fifo_count;
409
410 if (n <= GT_FIFO_NUM_RESERVED_ENTRIES) {
411 if (wait_for_atomic((n = fifo_free_entries(uncore)) >
412 GT_FIFO_NUM_RESERVED_ENTRIES,
413 GT_FIFO_TIMEOUT_MS)) {
414 drm_dbg(&uncore->i915->drm,
415 "GT_FIFO timeout, entries: %u\n", n);
416 return;
417 }
418 }
419
420 uncore->fifo_count = n - 1;
421}
422
423static enum hrtimer_restart
424intel_uncore_fw_release_timer(struct hrtimer *timer)
425{
426 struct intel_uncore_forcewake_domain *domain =
427 container_of(timer, struct intel_uncore_forcewake_domain, timer);
428 struct intel_uncore *uncore = domain->uncore;
429 unsigned long irqflags;
430
431 assert_rpm_device_not_suspended(uncore->rpm);
432
433 if (xchg(&domain->active, false))
434 return HRTIMER_RESTART;
435
436 spin_lock_irqsave(&uncore->lock, irqflags);
437
438 uncore->fw_domains_timer &= ~domain->mask;
439
440 GEM_BUG_ON(!domain->wake_count);
441 if (--domain->wake_count == 0)
442 fw_domains_put(uncore, domain->mask);
443
444 spin_unlock_irqrestore(&uncore->lock, irqflags);
445
446 return HRTIMER_NORESTART;
447}
448
449/* Note callers must have acquired the PUNIT->PMIC bus, before calling this. */
450static unsigned int
451intel_uncore_forcewake_reset(struct intel_uncore *uncore)
452{
453 unsigned long irqflags;
454 struct intel_uncore_forcewake_domain *domain;
455 int retry_count = 100;
456 enum forcewake_domains fw, active_domains;
457
458 iosf_mbi_assert_punit_acquired();
459
460 /* Hold uncore.lock across reset to prevent any register access
461 * with forcewake not set correctly. Wait until all pending
462 * timers are run before holding.
463 */
464 while (1) {
465 unsigned int tmp;
466
467 active_domains = 0;
468
469 for_each_fw_domain(domain, uncore, tmp) {
470 smp_store_mb(domain->active, false);
471 if (hrtimer_cancel(&domain->timer) == 0)
472 continue;
473
474 intel_uncore_fw_release_timer(&domain->timer);
475 }
476
477 spin_lock_irqsave(&uncore->lock, irqflags);
478
479 for_each_fw_domain(domain, uncore, tmp) {
480 if (hrtimer_active(&domain->timer))
481 active_domains |= domain->mask;
482 }
483
484 if (active_domains == 0)
485 break;
486
487 if (--retry_count == 0) {
488 drm_err(&uncore->i915->drm, "Timed out waiting for forcewake timers to finish\n");
489 break;
490 }
491
492 spin_unlock_irqrestore(&uncore->lock, irqflags);
493 cond_resched();
494 }
495
496 drm_WARN_ON(&uncore->i915->drm, active_domains);
497
498 fw = uncore->fw_domains_active;
499 if (fw)
500 fw_domains_put(uncore, fw);
501
502 fw_domains_reset(uncore, uncore->fw_domains);
503 assert_forcewakes_inactive(uncore);
504
505 spin_unlock_irqrestore(&uncore->lock, irqflags);
506
507 return fw; /* track the lost user forcewake domains */
508}
509
510static bool
511fpga_check_for_unclaimed_mmio(struct intel_uncore *uncore)
512{
513 u32 dbg;
514
515 dbg = __raw_uncore_read32(uncore, FPGA_DBG);
516 if (likely(!(dbg & FPGA_DBG_RM_NOCLAIM)))
517 return false;
518
519 /*
520 * Bugs in PCI programming (or failing hardware) can occasionally cause
521 * us to lose access to the MMIO BAR. When this happens, register
522 * reads will come back with 0xFFFFFFFF for every register and things
523 * go bad very quickly. Let's try to detect that special case and at
524 * least try to print a more informative message about what has
525 * happened.
526 *
527 * During normal operation the FPGA_DBG register has several unused
528 * bits that will always read back as 0's so we can use them as canaries
529 * to recognize when MMIO accesses are just busted.
530 */
531 if (unlikely(dbg == ~0))
532 drm_err(&uncore->i915->drm,
533 "Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!\n");
534
535 __raw_uncore_write32(uncore, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
536
537 return true;
538}
539
540static bool
541vlv_check_for_unclaimed_mmio(struct intel_uncore *uncore)
542{
543 u32 cer;
544
545 cer = __raw_uncore_read32(uncore, CLAIM_ER);
546 if (likely(!(cer & (CLAIM_ER_OVERFLOW | CLAIM_ER_CTR_MASK))))
547 return false;
548
549 __raw_uncore_write32(uncore, CLAIM_ER, CLAIM_ER_CLR);
550
551 return true;
552}
553
554static bool
555gen6_check_for_fifo_debug(struct intel_uncore *uncore)
556{
557 u32 fifodbg;
558
559 fifodbg = __raw_uncore_read32(uncore, GTFIFODBG);
560
561 if (unlikely(fifodbg)) {
562 drm_dbg(&uncore->i915->drm, "GTFIFODBG = 0x08%x\n", fifodbg);
563 __raw_uncore_write32(uncore, GTFIFODBG, fifodbg);
564 }
565
566 return fifodbg;
567}
568
569static bool
570check_for_unclaimed_mmio(struct intel_uncore *uncore)
571{
572 bool ret = false;
573
574 lockdep_assert_held(&uncore->debug->lock);
575
576 if (uncore->debug->suspend_count)
577 return false;
578
579 if (intel_uncore_has_fpga_dbg_unclaimed(uncore))
580 ret |= fpga_check_for_unclaimed_mmio(uncore);
581
582 if (intel_uncore_has_dbg_unclaimed(uncore))
583 ret |= vlv_check_for_unclaimed_mmio(uncore);
584
585 if (intel_uncore_has_fifo(uncore))
586 ret |= gen6_check_for_fifo_debug(uncore);
587
588 return ret;
589}
590
591static void forcewake_early_sanitize(struct intel_uncore *uncore,
592 unsigned int restore_forcewake)
593{
594 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
595
596 /* WaDisableShadowRegForCpd:chv */
597 if (IS_CHERRYVIEW(uncore->i915)) {
598 __raw_uncore_write32(uncore, GTFIFOCTL,
599 __raw_uncore_read32(uncore, GTFIFOCTL) |
600 GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL |
601 GT_FIFO_CTL_RC6_POLICY_STALL);
602 }
603
604 iosf_mbi_punit_acquire();
605 intel_uncore_forcewake_reset(uncore);
606 if (restore_forcewake) {
607 spin_lock_irq(&uncore->lock);
608 fw_domains_get(uncore, restore_forcewake);
609
610 if (intel_uncore_has_fifo(uncore))
611 uncore->fifo_count = fifo_free_entries(uncore);
612 spin_unlock_irq(&uncore->lock);
613 }
614 iosf_mbi_punit_release();
615}
616
617void intel_uncore_suspend(struct intel_uncore *uncore)
618{
619 if (!intel_uncore_has_forcewake(uncore))
620 return;
621
622 iosf_mbi_punit_acquire();
623 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
624 &uncore->pmic_bus_access_nb);
625 uncore->fw_domains_saved = intel_uncore_forcewake_reset(uncore);
626 iosf_mbi_punit_release();
627}
628
629void intel_uncore_resume_early(struct intel_uncore *uncore)
630{
631 unsigned int restore_forcewake;
632
633 if (intel_uncore_unclaimed_mmio(uncore))
634 drm_dbg(&uncore->i915->drm, "unclaimed mmio detected on resume, clearing\n");
635
636 if (!intel_uncore_has_forcewake(uncore))
637 return;
638
639 restore_forcewake = fetch_and_zero(&uncore->fw_domains_saved);
640 forcewake_early_sanitize(uncore, restore_forcewake);
641
642 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
643}
644
645void intel_uncore_runtime_resume(struct intel_uncore *uncore)
646{
647 if (!intel_uncore_has_forcewake(uncore))
648 return;
649
650 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
651}
652
653static void __intel_uncore_forcewake_get(struct intel_uncore *uncore,
654 enum forcewake_domains fw_domains)
655{
656 struct intel_uncore_forcewake_domain *domain;
657 unsigned int tmp;
658
659 fw_domains &= uncore->fw_domains;
660
661 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
662 if (domain->wake_count++) {
663 fw_domains &= ~domain->mask;
664 domain->active = true;
665 }
666 }
667
668 if (fw_domains)
669 fw_domains_get(uncore, fw_domains);
670}
671
672/**
673 * intel_uncore_forcewake_get - grab forcewake domain references
674 * @uncore: the intel_uncore structure
675 * @fw_domains: forcewake domains to get reference on
676 *
677 * This function can be used get GT's forcewake domain references.
678 * Normal register access will handle the forcewake domains automatically.
679 * However if some sequence requires the GT to not power down a particular
680 * forcewake domains this function should be called at the beginning of the
681 * sequence. And subsequently the reference should be dropped by symmetric
682 * call to intel_unforce_forcewake_put(). Usually caller wants all the domains
683 * to be kept awake so the @fw_domains would be then FORCEWAKE_ALL.
684 */
685void intel_uncore_forcewake_get(struct intel_uncore *uncore,
686 enum forcewake_domains fw_domains)
687{
688 unsigned long irqflags;
689
690 if (!uncore->fw_get_funcs)
691 return;
692
693 assert_rpm_wakelock_held(uncore->rpm);
694
695 spin_lock_irqsave(&uncore->lock, irqflags);
696 __intel_uncore_forcewake_get(uncore, fw_domains);
697 spin_unlock_irqrestore(&uncore->lock, irqflags);
698}
699
700/**
701 * intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace
702 * @uncore: the intel_uncore structure
703 *
704 * This function is a wrapper around intel_uncore_forcewake_get() to acquire
705 * the GT powerwell and in the process disable our debugging for the
706 * duration of userspace's bypass.
707 */
708void intel_uncore_forcewake_user_get(struct intel_uncore *uncore)
709{
710 spin_lock_irq(&uncore->lock);
711 if (!uncore->user_forcewake_count++) {
712 intel_uncore_forcewake_get__locked(uncore, FORCEWAKE_ALL);
713 mmio_debug_suspend(uncore);
714 }
715 spin_unlock_irq(&uncore->lock);
716}
717
718/**
719 * intel_uncore_forcewake_user_put - release forcewake on behalf of userspace
720 * @uncore: the intel_uncore structure
721 *
722 * This function complements intel_uncore_forcewake_user_get() and releases
723 * the GT powerwell taken on behalf of the userspace bypass.
724 */
725void intel_uncore_forcewake_user_put(struct intel_uncore *uncore)
726{
727 spin_lock_irq(&uncore->lock);
728 if (!--uncore->user_forcewake_count) {
729 mmio_debug_resume(uncore);
730 intel_uncore_forcewake_put__locked(uncore, FORCEWAKE_ALL);
731 }
732 spin_unlock_irq(&uncore->lock);
733}
734
735/**
736 * intel_uncore_forcewake_get__locked - grab forcewake domain references
737 * @uncore: the intel_uncore structure
738 * @fw_domains: forcewake domains to get reference on
739 *
740 * See intel_uncore_forcewake_get(). This variant places the onus
741 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
742 */
743void intel_uncore_forcewake_get__locked(struct intel_uncore *uncore,
744 enum forcewake_domains fw_domains)
745{
746 lockdep_assert_held(&uncore->lock);
747
748 if (!uncore->fw_get_funcs)
749 return;
750
751 __intel_uncore_forcewake_get(uncore, fw_domains);
752}
753
754static void __intel_uncore_forcewake_put(struct intel_uncore *uncore,
755 enum forcewake_domains fw_domains,
756 bool delayed)
757{
758 struct intel_uncore_forcewake_domain *domain;
759 unsigned int tmp;
760
761 fw_domains &= uncore->fw_domains;
762
763 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
764 GEM_BUG_ON(!domain->wake_count);
765
766 if (--domain->wake_count) {
767 domain->active = true;
768 continue;
769 }
770
771 if (delayed &&
772 !(domain->uncore->fw_domains_timer & domain->mask))
773 fw_domain_arm_timer(domain);
774 else
775 fw_domains_put(uncore, domain->mask);
776 }
777}
778
779/**
780 * intel_uncore_forcewake_put - release a forcewake domain reference
781 * @uncore: the intel_uncore structure
782 * @fw_domains: forcewake domains to put references
783 *
784 * This function drops the device-level forcewakes for specified
785 * domains obtained by intel_uncore_forcewake_get().
786 */
787void intel_uncore_forcewake_put(struct intel_uncore *uncore,
788 enum forcewake_domains fw_domains)
789{
790 unsigned long irqflags;
791
792 if (!uncore->fw_get_funcs)
793 return;
794
795 spin_lock_irqsave(&uncore->lock, irqflags);
796 __intel_uncore_forcewake_put(uncore, fw_domains, false);
797 spin_unlock_irqrestore(&uncore->lock, irqflags);
798}
799
800void intel_uncore_forcewake_put_delayed(struct intel_uncore *uncore,
801 enum forcewake_domains fw_domains)
802{
803 unsigned long irqflags;
804
805 if (!uncore->fw_get_funcs)
806 return;
807
808 spin_lock_irqsave(&uncore->lock, irqflags);
809 __intel_uncore_forcewake_put(uncore, fw_domains, true);
810 spin_unlock_irqrestore(&uncore->lock, irqflags);
811}
812
813/**
814 * intel_uncore_forcewake_flush - flush the delayed release
815 * @uncore: the intel_uncore structure
816 * @fw_domains: forcewake domains to flush
817 */
818void intel_uncore_forcewake_flush(struct intel_uncore *uncore,
819 enum forcewake_domains fw_domains)
820{
821 struct intel_uncore_forcewake_domain *domain;
822 unsigned int tmp;
823
824 if (!uncore->fw_get_funcs)
825 return;
826
827 fw_domains &= uncore->fw_domains;
828 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
829 WRITE_ONCE(domain->active, false);
830 if (hrtimer_cancel(&domain->timer))
831 intel_uncore_fw_release_timer(&domain->timer);
832 }
833}
834
835/**
836 * intel_uncore_forcewake_put__locked - release forcewake domain references
837 * @uncore: the intel_uncore structure
838 * @fw_domains: forcewake domains to put references
839 *
840 * See intel_uncore_forcewake_put(). This variant places the onus
841 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
842 */
843void intel_uncore_forcewake_put__locked(struct intel_uncore *uncore,
844 enum forcewake_domains fw_domains)
845{
846 lockdep_assert_held(&uncore->lock);
847
848 if (!uncore->fw_get_funcs)
849 return;
850
851 __intel_uncore_forcewake_put(uncore, fw_domains, false);
852}
853
854void assert_forcewakes_inactive(struct intel_uncore *uncore)
855{
856 if (!uncore->fw_get_funcs)
857 return;
858
859 drm_WARN(&uncore->i915->drm, uncore->fw_domains_active,
860 "Expected all fw_domains to be inactive, but %08x are still on\n",
861 uncore->fw_domains_active);
862}
863
864void assert_forcewakes_active(struct intel_uncore *uncore,
865 enum forcewake_domains fw_domains)
866{
867 struct intel_uncore_forcewake_domain *domain;
868 unsigned int tmp;
869
870 if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
871 return;
872
873 if (!uncore->fw_get_funcs)
874 return;
875
876 spin_lock_irq(&uncore->lock);
877
878 assert_rpm_wakelock_held(uncore->rpm);
879
880 fw_domains &= uncore->fw_domains;
881 drm_WARN(&uncore->i915->drm, fw_domains & ~uncore->fw_domains_active,
882 "Expected %08x fw_domains to be active, but %08x are off\n",
883 fw_domains, fw_domains & ~uncore->fw_domains_active);
884
885 /*
886 * Check that the caller has an explicit wakeref and we don't mistake
887 * it for the auto wakeref.
888 */
889 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
890 unsigned int actual = READ_ONCE(domain->wake_count);
891 unsigned int expect = 1;
892
893 if (uncore->fw_domains_timer & domain->mask)
894 expect++; /* pending automatic release */
895
896 if (drm_WARN(&uncore->i915->drm, actual < expect,
897 "Expected domain %d to be held awake by caller, count=%d\n",
898 domain->id, actual))
899 break;
900 }
901
902 spin_unlock_irq(&uncore->lock);
903}
904
905/*
906 * We give fast paths for the really cool registers. The second range includes
907 * media domains (and the GSC starting from Xe_LPM+)
908 */
909#define NEEDS_FORCE_WAKE(reg) ({ \
910 u32 __reg = (reg); \
911 __reg < 0x40000 || __reg >= 0x116000; \
912})
913
914static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry)
915{
916 if (offset < entry->start)
917 return -1;
918 else if (offset > entry->end)
919 return 1;
920 else
921 return 0;
922}
923
924/* Copied and "macroized" from lib/bsearch.c */
925#define BSEARCH(key, base, num, cmp) ({ \
926 unsigned int start__ = 0, end__ = (num); \
927 typeof(base) result__ = NULL; \
928 while (start__ < end__) { \
929 unsigned int mid__ = start__ + (end__ - start__) / 2; \
930 int ret__ = (cmp)((key), (base) + mid__); \
931 if (ret__ < 0) { \
932 end__ = mid__; \
933 } else if (ret__ > 0) { \
934 start__ = mid__ + 1; \
935 } else { \
936 result__ = (base) + mid__; \
937 break; \
938 } \
939 } \
940 result__; \
941})
942
943static enum forcewake_domains
944find_fw_domain(struct intel_uncore *uncore, u32 offset)
945{
946 const struct intel_forcewake_range *entry;
947
948 if (IS_GSI_REG(offset))
949 offset += uncore->gsi_offset;
950
951 entry = BSEARCH(offset,
952 uncore->fw_domains_table,
953 uncore->fw_domains_table_entries,
954 fw_range_cmp);
955
956 if (!entry)
957 return 0;
958
959 /*
960 * The list of FW domains depends on the SKU in gen11+ so we
961 * can't determine it statically. We use FORCEWAKE_ALL and
962 * translate it here to the list of available domains.
963 */
964 if (entry->domains == FORCEWAKE_ALL)
965 return uncore->fw_domains;
966
967 drm_WARN(&uncore->i915->drm, entry->domains & ~uncore->fw_domains,
968 "Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n",
969 entry->domains & ~uncore->fw_domains, offset);
970
971 return entry->domains;
972}
973
974/*
975 * Shadowed register tables describe special register ranges that i915 is
976 * allowed to write to without acquiring forcewake. If these registers' power
977 * wells are down, the hardware will save values written by i915 to a shadow
978 * copy and automatically transfer them into the real register the next time
979 * the power well is woken up. Shadowing only applies to writes; forcewake
980 * must still be acquired when reading from registers in these ranges.
981 *
982 * The documentation for shadowed registers is somewhat spotty on older
983 * platforms. However missing registers from these lists is non-fatal; it just
984 * means we'll wake up the hardware for some register accesses where we didn't
985 * really need to.
986 *
987 * The ranges listed in these tables must be sorted by offset.
988 *
989 * When adding new tables here, please also add them to
990 * intel_shadow_table_check() in selftests/intel_uncore.c so that they will be
991 * scanned for obvious mistakes or typos by the selftests.
992 */
993
994static const struct i915_range gen8_shadowed_regs[] = {
995 { .start = 0x2030, .end = 0x2030 },
996 { .start = 0xA008, .end = 0xA00C },
997 { .start = 0x12030, .end = 0x12030 },
998 { .start = 0x1a030, .end = 0x1a030 },
999 { .start = 0x22030, .end = 0x22030 },
1000};
1001
1002static const struct i915_range gen11_shadowed_regs[] = {
1003 { .start = 0x2030, .end = 0x2030 },
1004 { .start = 0x2550, .end = 0x2550 },
1005 { .start = 0xA008, .end = 0xA00C },
1006 { .start = 0x22030, .end = 0x22030 },
1007 { .start = 0x22230, .end = 0x22230 },
1008 { .start = 0x22510, .end = 0x22550 },
1009 { .start = 0x1C0030, .end = 0x1C0030 },
1010 { .start = 0x1C0230, .end = 0x1C0230 },
1011 { .start = 0x1C0510, .end = 0x1C0550 },
1012 { .start = 0x1C4030, .end = 0x1C4030 },
1013 { .start = 0x1C4230, .end = 0x1C4230 },
1014 { .start = 0x1C4510, .end = 0x1C4550 },
1015 { .start = 0x1C8030, .end = 0x1C8030 },
1016 { .start = 0x1C8230, .end = 0x1C8230 },
1017 { .start = 0x1C8510, .end = 0x1C8550 },
1018 { .start = 0x1D0030, .end = 0x1D0030 },
1019 { .start = 0x1D0230, .end = 0x1D0230 },
1020 { .start = 0x1D0510, .end = 0x1D0550 },
1021 { .start = 0x1D4030, .end = 0x1D4030 },
1022 { .start = 0x1D4230, .end = 0x1D4230 },
1023 { .start = 0x1D4510, .end = 0x1D4550 },
1024 { .start = 0x1D8030, .end = 0x1D8030 },
1025 { .start = 0x1D8230, .end = 0x1D8230 },
1026 { .start = 0x1D8510, .end = 0x1D8550 },
1027};
1028
1029static const struct i915_range gen12_shadowed_regs[] = {
1030 { .start = 0x2030, .end = 0x2030 },
1031 { .start = 0x2510, .end = 0x2550 },
1032 { .start = 0xA008, .end = 0xA00C },
1033 { .start = 0xA188, .end = 0xA188 },
1034 { .start = 0xA278, .end = 0xA278 },
1035 { .start = 0xA540, .end = 0xA56C },
1036 { .start = 0xC4C8, .end = 0xC4C8 },
1037 { .start = 0xC4D4, .end = 0xC4D4 },
1038 { .start = 0xC600, .end = 0xC600 },
1039 { .start = 0x22030, .end = 0x22030 },
1040 { .start = 0x22510, .end = 0x22550 },
1041 { .start = 0x1C0030, .end = 0x1C0030 },
1042 { .start = 0x1C0510, .end = 0x1C0550 },
1043 { .start = 0x1C4030, .end = 0x1C4030 },
1044 { .start = 0x1C4510, .end = 0x1C4550 },
1045 { .start = 0x1C8030, .end = 0x1C8030 },
1046 { .start = 0x1C8510, .end = 0x1C8550 },
1047 { .start = 0x1D0030, .end = 0x1D0030 },
1048 { .start = 0x1D0510, .end = 0x1D0550 },
1049 { .start = 0x1D4030, .end = 0x1D4030 },
1050 { .start = 0x1D4510, .end = 0x1D4550 },
1051 { .start = 0x1D8030, .end = 0x1D8030 },
1052 { .start = 0x1D8510, .end = 0x1D8550 },
1053
1054 /*
1055 * The rest of these ranges are specific to Xe_HP and beyond, but
1056 * are reserved/unused ranges on earlier gen12 platforms, so they can
1057 * be safely added to the gen12 table.
1058 */
1059 { .start = 0x1E0030, .end = 0x1E0030 },
1060 { .start = 0x1E0510, .end = 0x1E0550 },
1061 { .start = 0x1E4030, .end = 0x1E4030 },
1062 { .start = 0x1E4510, .end = 0x1E4550 },
1063 { .start = 0x1E8030, .end = 0x1E8030 },
1064 { .start = 0x1E8510, .end = 0x1E8550 },
1065 { .start = 0x1F0030, .end = 0x1F0030 },
1066 { .start = 0x1F0510, .end = 0x1F0550 },
1067 { .start = 0x1F4030, .end = 0x1F4030 },
1068 { .start = 0x1F4510, .end = 0x1F4550 },
1069 { .start = 0x1F8030, .end = 0x1F8030 },
1070 { .start = 0x1F8510, .end = 0x1F8550 },
1071};
1072
1073static const struct i915_range dg2_shadowed_regs[] = {
1074 { .start = 0x2030, .end = 0x2030 },
1075 { .start = 0x2510, .end = 0x2550 },
1076 { .start = 0xA008, .end = 0xA00C },
1077 { .start = 0xA188, .end = 0xA188 },
1078 { .start = 0xA278, .end = 0xA278 },
1079 { .start = 0xA540, .end = 0xA56C },
1080 { .start = 0xC4C8, .end = 0xC4C8 },
1081 { .start = 0xC4E0, .end = 0xC4E0 },
1082 { .start = 0xC600, .end = 0xC600 },
1083 { .start = 0xC658, .end = 0xC658 },
1084 { .start = 0x22030, .end = 0x22030 },
1085 { .start = 0x22510, .end = 0x22550 },
1086 { .start = 0x1C0030, .end = 0x1C0030 },
1087 { .start = 0x1C0510, .end = 0x1C0550 },
1088 { .start = 0x1C4030, .end = 0x1C4030 },
1089 { .start = 0x1C4510, .end = 0x1C4550 },
1090 { .start = 0x1C8030, .end = 0x1C8030 },
1091 { .start = 0x1C8510, .end = 0x1C8550 },
1092 { .start = 0x1D0030, .end = 0x1D0030 },
1093 { .start = 0x1D0510, .end = 0x1D0550 },
1094 { .start = 0x1D4030, .end = 0x1D4030 },
1095 { .start = 0x1D4510, .end = 0x1D4550 },
1096 { .start = 0x1D8030, .end = 0x1D8030 },
1097 { .start = 0x1D8510, .end = 0x1D8550 },
1098 { .start = 0x1E0030, .end = 0x1E0030 },
1099 { .start = 0x1E0510, .end = 0x1E0550 },
1100 { .start = 0x1E4030, .end = 0x1E4030 },
1101 { .start = 0x1E4510, .end = 0x1E4550 },
1102 { .start = 0x1E8030, .end = 0x1E8030 },
1103 { .start = 0x1E8510, .end = 0x1E8550 },
1104 { .start = 0x1F0030, .end = 0x1F0030 },
1105 { .start = 0x1F0510, .end = 0x1F0550 },
1106 { .start = 0x1F4030, .end = 0x1F4030 },
1107 { .start = 0x1F4510, .end = 0x1F4550 },
1108 { .start = 0x1F8030, .end = 0x1F8030 },
1109 { .start = 0x1F8510, .end = 0x1F8550 },
1110};
1111
1112static const struct i915_range mtl_shadowed_regs[] = {
1113 { .start = 0x2030, .end = 0x2030 },
1114 { .start = 0x2510, .end = 0x2550 },
1115 { .start = 0xA008, .end = 0xA00C },
1116 { .start = 0xA188, .end = 0xA188 },
1117 { .start = 0xA278, .end = 0xA278 },
1118 { .start = 0xA540, .end = 0xA56C },
1119 { .start = 0xC050, .end = 0xC050 },
1120 { .start = 0xC340, .end = 0xC340 },
1121 { .start = 0xC4C8, .end = 0xC4C8 },
1122 { .start = 0xC4E0, .end = 0xC4E0 },
1123 { .start = 0xC600, .end = 0xC600 },
1124 { .start = 0xC658, .end = 0xC658 },
1125 { .start = 0xCFD4, .end = 0xCFDC },
1126 { .start = 0x22030, .end = 0x22030 },
1127 { .start = 0x22510, .end = 0x22550 },
1128};
1129
1130static const struct i915_range xelpmp_shadowed_regs[] = {
1131 { .start = 0x1C0030, .end = 0x1C0030 },
1132 { .start = 0x1C0510, .end = 0x1C0550 },
1133 { .start = 0x1C8030, .end = 0x1C8030 },
1134 { .start = 0x1C8510, .end = 0x1C8550 },
1135 { .start = 0x1D0030, .end = 0x1D0030 },
1136 { .start = 0x1D0510, .end = 0x1D0550 },
1137 { .start = 0x38A008, .end = 0x38A00C },
1138 { .start = 0x38A188, .end = 0x38A188 },
1139 { .start = 0x38A278, .end = 0x38A278 },
1140 { .start = 0x38A540, .end = 0x38A56C },
1141 { .start = 0x38A618, .end = 0x38A618 },
1142 { .start = 0x38C050, .end = 0x38C050 },
1143 { .start = 0x38C340, .end = 0x38C340 },
1144 { .start = 0x38C4C8, .end = 0x38C4C8 },
1145 { .start = 0x38C4E0, .end = 0x38C4E4 },
1146 { .start = 0x38C600, .end = 0x38C600 },
1147 { .start = 0x38C658, .end = 0x38C658 },
1148 { .start = 0x38CFD4, .end = 0x38CFDC },
1149};
1150
1151static int mmio_range_cmp(u32 key, const struct i915_range *range)
1152{
1153 if (key < range->start)
1154 return -1;
1155 else if (key > range->end)
1156 return 1;
1157 else
1158 return 0;
1159}
1160
1161static bool is_shadowed(struct intel_uncore *uncore, u32 offset)
1162{
1163 if (drm_WARN_ON(&uncore->i915->drm, !uncore->shadowed_reg_table))
1164 return false;
1165
1166 if (IS_GSI_REG(offset))
1167 offset += uncore->gsi_offset;
1168
1169 return BSEARCH(offset,
1170 uncore->shadowed_reg_table,
1171 uncore->shadowed_reg_table_entries,
1172 mmio_range_cmp);
1173}
1174
1175static enum forcewake_domains
1176gen6_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
1177{
1178 return FORCEWAKE_RENDER;
1179}
1180
1181#define __fwtable_reg_read_fw_domains(uncore, offset) \
1182({ \
1183 enum forcewake_domains __fwd = 0; \
1184 if (NEEDS_FORCE_WAKE((offset))) \
1185 __fwd = find_fw_domain(uncore, offset); \
1186 __fwd; \
1187})
1188
1189#define __fwtable_reg_write_fw_domains(uncore, offset) \
1190({ \
1191 enum forcewake_domains __fwd = 0; \
1192 const u32 __offset = (offset); \
1193 if (NEEDS_FORCE_WAKE((__offset)) && !is_shadowed(uncore, __offset)) \
1194 __fwd = find_fw_domain(uncore, __offset); \
1195 __fwd; \
1196})
1197
1198#define GEN_FW_RANGE(s, e, d) \
1199 { .start = (s), .end = (e), .domains = (d) }
1200
1201/*
1202 * All platforms' forcewake tables below must be sorted by offset ranges.
1203 * Furthermore, new forcewake tables added should be "watertight" and have
1204 * no gaps between ranges.
1205 *
1206 * When there are multiple consecutive ranges listed in the bspec with
1207 * the same forcewake domain, it is customary to combine them into a single
1208 * row in the tables below to keep the tables small and lookups fast.
1209 * Likewise, reserved/unused ranges may be combined with the preceding and/or
1210 * following ranges since the driver will never be making MMIO accesses in
1211 * those ranges.
1212 *
1213 * For example, if the bspec were to list:
1214 *
1215 * ...
1216 * 0x1000 - 0x1fff: GT
1217 * 0x2000 - 0x2cff: GT
1218 * 0x2d00 - 0x2fff: unused/reserved
1219 * 0x3000 - 0xffff: GT
1220 * ...
1221 *
1222 * these could all be represented by a single line in the code:
1223 *
1224 * GEN_FW_RANGE(0x1000, 0xffff, FORCEWAKE_GT)
1225 *
1226 * When adding new forcewake tables here, please also add them to
1227 * intel_uncore_mock_selftests in selftests/intel_uncore.c so that they will be
1228 * scanned for obvious mistakes or typos by the selftests.
1229 */
1230
1231static const struct intel_forcewake_range __gen6_fw_ranges[] = {
1232 GEN_FW_RANGE(0x0, 0x3ffff, FORCEWAKE_RENDER),
1233};
1234
1235static const struct intel_forcewake_range __vlv_fw_ranges[] = {
1236 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
1237 GEN_FW_RANGE(0x5000, 0x7fff, FORCEWAKE_RENDER),
1238 GEN_FW_RANGE(0xb000, 0x11fff, FORCEWAKE_RENDER),
1239 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
1240 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_MEDIA),
1241 GEN_FW_RANGE(0x2e000, 0x2ffff, FORCEWAKE_RENDER),
1242 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
1243};
1244
1245static const struct intel_forcewake_range __chv_fw_ranges[] = {
1246 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
1247 GEN_FW_RANGE(0x4000, 0x4fff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1248 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1249 GEN_FW_RANGE(0x8000, 0x82ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1250 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1251 GEN_FW_RANGE(0x8500, 0x85ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1252 GEN_FW_RANGE(0x8800, 0x88ff, FORCEWAKE_MEDIA),
1253 GEN_FW_RANGE(0x9000, 0xafff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1254 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
1255 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
1256 GEN_FW_RANGE(0xe000, 0xe7ff, FORCEWAKE_RENDER),
1257 GEN_FW_RANGE(0xf000, 0xffff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1258 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
1259 GEN_FW_RANGE(0x1a000, 0x1bfff, FORCEWAKE_MEDIA),
1260 GEN_FW_RANGE(0x1e800, 0x1e9ff, FORCEWAKE_MEDIA),
1261 GEN_FW_RANGE(0x30000, 0x37fff, FORCEWAKE_MEDIA),
1262};
1263
1264static const struct intel_forcewake_range __gen9_fw_ranges[] = {
1265 GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_GT),
1266 GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
1267 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1268 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT),
1269 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1270 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT),
1271 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1272 GEN_FW_RANGE(0x8000, 0x812f, FORCEWAKE_GT),
1273 GEN_FW_RANGE(0x8130, 0x813f, FORCEWAKE_MEDIA),
1274 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1275 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT),
1276 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1277 GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT),
1278 GEN_FW_RANGE(0x8800, 0x89ff, FORCEWAKE_MEDIA),
1279 GEN_FW_RANGE(0x8a00, 0x8bff, FORCEWAKE_GT),
1280 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
1281 GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_GT),
1282 GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1283 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT),
1284 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
1285 GEN_FW_RANGE(0xb480, 0xcfff, FORCEWAKE_GT),
1286 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
1287 GEN_FW_RANGE(0xd800, 0xdfff, FORCEWAKE_GT),
1288 GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
1289 GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_GT),
1290 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
1291 GEN_FW_RANGE(0x14000, 0x19fff, FORCEWAKE_GT),
1292 GEN_FW_RANGE(0x1a000, 0x1e9ff, FORCEWAKE_MEDIA),
1293 GEN_FW_RANGE(0x1ea00, 0x243ff, FORCEWAKE_GT),
1294 GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
1295 GEN_FW_RANGE(0x24800, 0x2ffff, FORCEWAKE_GT),
1296 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
1297};
1298
1299static const struct intel_forcewake_range __gen11_fw_ranges[] = {
1300 GEN_FW_RANGE(0x0, 0x1fff, 0), /* uncore range */
1301 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1302 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT),
1303 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1304 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT),
1305 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1306 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
1307 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1308 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT),
1309 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1310 GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT),
1311 GEN_FW_RANGE(0x8800, 0x8bff, 0),
1312 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
1313 GEN_FW_RANGE(0x8d00, 0x94cf, FORCEWAKE_GT),
1314 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
1315 GEN_FW_RANGE(0x9560, 0x95ff, 0),
1316 GEN_FW_RANGE(0x9600, 0xafff, FORCEWAKE_GT),
1317 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
1318 GEN_FW_RANGE(0xb480, 0xdeff, FORCEWAKE_GT),
1319 GEN_FW_RANGE(0xdf00, 0xe8ff, FORCEWAKE_RENDER),
1320 GEN_FW_RANGE(0xe900, 0x16dff, FORCEWAKE_GT),
1321 GEN_FW_RANGE(0x16e00, 0x19fff, FORCEWAKE_RENDER),
1322 GEN_FW_RANGE(0x1a000, 0x23fff, FORCEWAKE_GT),
1323 GEN_FW_RANGE(0x24000, 0x2407f, 0),
1324 GEN_FW_RANGE(0x24080, 0x2417f, FORCEWAKE_GT),
1325 GEN_FW_RANGE(0x24180, 0x242ff, FORCEWAKE_RENDER),
1326 GEN_FW_RANGE(0x24300, 0x243ff, FORCEWAKE_GT),
1327 GEN_FW_RANGE(0x24400, 0x24fff, FORCEWAKE_RENDER),
1328 GEN_FW_RANGE(0x25000, 0x3ffff, FORCEWAKE_GT),
1329 GEN_FW_RANGE(0x40000, 0x1bffff, 0),
1330 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0),
1331 GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0),
1332 GEN_FW_RANGE(0x1c8000, 0x1cffff, FORCEWAKE_MEDIA_VEBOX0),
1333 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2),
1334 GEN_FW_RANGE(0x1d4000, 0x1dbfff, 0)
1335};
1336
1337static const struct intel_forcewake_range __gen12_fw_ranges[] = {
1338 GEN_FW_RANGE(0x0, 0x1fff, 0), /*
1339 0x0 - 0xaff: reserved
1340 0xb00 - 0x1fff: always on */
1341 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1342 GEN_FW_RANGE(0x2700, 0x27ff, FORCEWAKE_GT),
1343 GEN_FW_RANGE(0x2800, 0x2aff, FORCEWAKE_RENDER),
1344 GEN_FW_RANGE(0x2b00, 0x2fff, FORCEWAKE_GT),
1345 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1346 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), /*
1347 0x4000 - 0x48ff: gt
1348 0x4900 - 0x51ff: reserved */
1349 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), /*
1350 0x5200 - 0x53ff: render
1351 0x5400 - 0x54ff: reserved
1352 0x5500 - 0x7fff: render */
1353 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
1354 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1355 GEN_FW_RANGE(0x8160, 0x81ff, 0), /*
1356 0x8160 - 0x817f: reserved
1357 0x8180 - 0x81ff: always on */
1358 GEN_FW_RANGE(0x8200, 0x82ff, FORCEWAKE_GT),
1359 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1360 GEN_FW_RANGE(0x8500, 0x94cf, FORCEWAKE_GT), /*
1361 0x8500 - 0x87ff: gt
1362 0x8800 - 0x8fff: reserved
1363 0x9000 - 0x947f: gt
1364 0x9480 - 0x94cf: reserved */
1365 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
1366 GEN_FW_RANGE(0x9560, 0x97ff, 0), /*
1367 0x9560 - 0x95ff: always on
1368 0x9600 - 0x97ff: reserved */
1369 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT),
1370 GEN_FW_RANGE(0xb000, 0xb3ff, FORCEWAKE_RENDER),
1371 GEN_FW_RANGE(0xb400, 0xcfff, FORCEWAKE_GT), /*
1372 0xb400 - 0xbf7f: gt
1373 0xb480 - 0xbfff: reserved
1374 0xc000 - 0xcfff: gt */
1375 GEN_FW_RANGE(0xd000, 0xd7ff, 0),
1376 GEN_FW_RANGE(0xd800, 0xd8ff, FORCEWAKE_RENDER),
1377 GEN_FW_RANGE(0xd900, 0xdbff, FORCEWAKE_GT),
1378 GEN_FW_RANGE(0xdc00, 0xefff, FORCEWAKE_RENDER), /*
1379 0xdc00 - 0xddff: render
1380 0xde00 - 0xde7f: reserved
1381 0xde80 - 0xe8ff: render
1382 0xe900 - 0xefff: reserved */
1383 GEN_FW_RANGE(0xf000, 0x147ff, FORCEWAKE_GT), /*
1384 0xf000 - 0xffff: gt
1385 0x10000 - 0x147ff: reserved */
1386 GEN_FW_RANGE(0x14800, 0x1ffff, FORCEWAKE_RENDER), /*
1387 0x14800 - 0x14fff: render
1388 0x15000 - 0x16dff: reserved
1389 0x16e00 - 0x1bfff: render
1390 0x1c000 - 0x1ffff: reserved */
1391 GEN_FW_RANGE(0x20000, 0x20fff, FORCEWAKE_MEDIA_VDBOX0),
1392 GEN_FW_RANGE(0x21000, 0x21fff, FORCEWAKE_MEDIA_VDBOX2),
1393 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT),
1394 GEN_FW_RANGE(0x24000, 0x2417f, 0), /*
1395 0x24000 - 0x2407f: always on
1396 0x24080 - 0x2417f: reserved */
1397 GEN_FW_RANGE(0x24180, 0x249ff, FORCEWAKE_GT), /*
1398 0x24180 - 0x241ff: gt
1399 0x24200 - 0x249ff: reserved */
1400 GEN_FW_RANGE(0x24a00, 0x251ff, FORCEWAKE_RENDER), /*
1401 0x24a00 - 0x24a7f: render
1402 0x24a80 - 0x251ff: reserved */
1403 GEN_FW_RANGE(0x25200, 0x255ff, FORCEWAKE_GT), /*
1404 0x25200 - 0x252ff: gt
1405 0x25300 - 0x255ff: reserved */
1406 GEN_FW_RANGE(0x25600, 0x2567f, FORCEWAKE_MEDIA_VDBOX0),
1407 GEN_FW_RANGE(0x25680, 0x259ff, FORCEWAKE_MEDIA_VDBOX2), /*
1408 0x25680 - 0x256ff: VD2
1409 0x25700 - 0x259ff: reserved */
1410 GEN_FW_RANGE(0x25a00, 0x25a7f, FORCEWAKE_MEDIA_VDBOX0),
1411 GEN_FW_RANGE(0x25a80, 0x2ffff, FORCEWAKE_MEDIA_VDBOX2), /*
1412 0x25a80 - 0x25aff: VD2
1413 0x25b00 - 0x2ffff: reserved */
1414 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT),
1415 GEN_FW_RANGE(0x40000, 0x1bffff, 0),
1416 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /*
1417 0x1c0000 - 0x1c2bff: VD0
1418 0x1c2c00 - 0x1c2cff: reserved
1419 0x1c2d00 - 0x1c2dff: VD0
1420 0x1c2e00 - 0x1c3eff: reserved
1421 0x1c3f00 - 0x1c3fff: VD0 */
1422 GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0),
1423 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
1424 0x1c8000 - 0x1ca0ff: VE0
1425 0x1ca100 - 0x1cbeff: reserved
1426 0x1cbf00 - 0x1cbfff: VE0 */
1427 GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /*
1428 0x1cc000 - 0x1ccfff: VD0
1429 0x1cd000 - 0x1cffff: reserved */
1430 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /*
1431 0x1d0000 - 0x1d2bff: VD2
1432 0x1d2c00 - 0x1d2cff: reserved
1433 0x1d2d00 - 0x1d2dff: VD2
1434 0x1d2e00 - 0x1d3eff: reserved
1435 0x1d3f00 - 0x1d3fff: VD2 */
1436};
1437
1438static const struct intel_forcewake_range __dg2_fw_ranges[] = {
1439 GEN_FW_RANGE(0x0, 0x1fff, 0), /*
1440 0x0 - 0xaff: reserved
1441 0xb00 - 0x1fff: always on */
1442 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1443 GEN_FW_RANGE(0x2700, 0x4aff, FORCEWAKE_GT),
1444 GEN_FW_RANGE(0x4b00, 0x51ff, 0), /*
1445 0x4b00 - 0x4fff: reserved
1446 0x5000 - 0x51ff: always on */
1447 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1448 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
1449 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1450 GEN_FW_RANGE(0x8160, 0x81ff, 0), /*
1451 0x8160 - 0x817f: reserved
1452 0x8180 - 0x81ff: always on */
1453 GEN_FW_RANGE(0x8200, 0x82ff, FORCEWAKE_GT),
1454 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1455 GEN_FW_RANGE(0x8500, 0x8cff, FORCEWAKE_GT), /*
1456 0x8500 - 0x87ff: gt
1457 0x8800 - 0x8c7f: reserved
1458 0x8c80 - 0x8cff: gt (DG2 only) */
1459 GEN_FW_RANGE(0x8d00, 0x8fff, FORCEWAKE_RENDER), /*
1460 0x8d00 - 0x8dff: render (DG2 only)
1461 0x8e00 - 0x8fff: reserved */
1462 GEN_FW_RANGE(0x9000, 0x94cf, FORCEWAKE_GT), /*
1463 0x9000 - 0x947f: gt
1464 0x9480 - 0x94cf: reserved */
1465 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
1466 GEN_FW_RANGE(0x9560, 0x967f, 0), /*
1467 0x9560 - 0x95ff: always on
1468 0x9600 - 0x967f: reserved */
1469 GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /*
1470 0x9680 - 0x96ff: render
1471 0x9700 - 0x97ff: reserved */
1472 GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /*
1473 0x9800 - 0xb4ff: gt
1474 0xb500 - 0xbfff: reserved
1475 0xc000 - 0xcfff: gt */
1476 GEN_FW_RANGE(0xd000, 0xd7ff, 0),
1477 GEN_FW_RANGE(0xd800, 0xd87f, FORCEWAKE_RENDER),
1478 GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT),
1479 GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER),
1480 GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /*
1481 0xdd00 - 0xddff: gt
1482 0xde00 - 0xde7f: reserved */
1483 GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /*
1484 0xde80 - 0xdfff: render
1485 0xe000 - 0xe0ff: reserved
1486 0xe100 - 0xe8ff: render */
1487 GEN_FW_RANGE(0xe900, 0xffff, FORCEWAKE_GT), /*
1488 0xe900 - 0xe9ff: gt
1489 0xea00 - 0xefff: reserved
1490 0xf000 - 0xffff: gt */
1491 GEN_FW_RANGE(0x10000, 0x12fff, 0), /*
1492 0x10000 - 0x11fff: reserved
1493 0x12000 - 0x127ff: always on
1494 0x12800 - 0x12fff: reserved */
1495 GEN_FW_RANGE(0x13000, 0x131ff, FORCEWAKE_MEDIA_VDBOX0),
1496 GEN_FW_RANGE(0x13200, 0x147ff, FORCEWAKE_MEDIA_VDBOX2), /*
1497 0x13200 - 0x133ff: VD2 (DG2 only)
1498 0x13400 - 0x147ff: reserved */
1499 GEN_FW_RANGE(0x14800, 0x14fff, FORCEWAKE_RENDER),
1500 GEN_FW_RANGE(0x15000, 0x16dff, FORCEWAKE_GT), /*
1501 0x15000 - 0x15fff: gt (DG2 only)
1502 0x16000 - 0x16dff: reserved */
1503 GEN_FW_RANGE(0x16e00, 0x21fff, FORCEWAKE_RENDER), /*
1504 0x16e00 - 0x1ffff: render
1505 0x20000 - 0x21fff: reserved */
1506 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT),
1507 GEN_FW_RANGE(0x24000, 0x2417f, 0), /*
1508 0x24000 - 0x2407f: always on
1509 0x24080 - 0x2417f: reserved */
1510 GEN_FW_RANGE(0x24180, 0x249ff, FORCEWAKE_GT), /*
1511 0x24180 - 0x241ff: gt
1512 0x24200 - 0x249ff: reserved */
1513 GEN_FW_RANGE(0x24a00, 0x251ff, FORCEWAKE_RENDER), /*
1514 0x24a00 - 0x24a7f: render
1515 0x24a80 - 0x251ff: reserved */
1516 GEN_FW_RANGE(0x25200, 0x25fff, FORCEWAKE_GT), /*
1517 0x25200 - 0x252ff: gt
1518 0x25300 - 0x25fff: reserved */
1519 GEN_FW_RANGE(0x26000, 0x2ffff, FORCEWAKE_RENDER), /*
1520 0x26000 - 0x27fff: render
1521 0x28000 - 0x29fff: reserved
1522 0x2a000 - 0x2ffff: undocumented */
1523 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT),
1524 GEN_FW_RANGE(0x40000, 0x1bffff, 0),
1525 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /*
1526 0x1c0000 - 0x1c2bff: VD0
1527 0x1c2c00 - 0x1c2cff: reserved
1528 0x1c2d00 - 0x1c2dff: VD0
1529 0x1c2e00 - 0x1c3eff: VD0
1530 0x1c3f00 - 0x1c3fff: VD0 */
1531 GEN_FW_RANGE(0x1c4000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX1), /*
1532 0x1c4000 - 0x1c6bff: VD1
1533 0x1c6c00 - 0x1c6cff: reserved
1534 0x1c6d00 - 0x1c6dff: VD1
1535 0x1c6e00 - 0x1c7fff: reserved */
1536 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
1537 0x1c8000 - 0x1ca0ff: VE0
1538 0x1ca100 - 0x1cbfff: reserved */
1539 GEN_FW_RANGE(0x1cc000, 0x1ccfff, FORCEWAKE_MEDIA_VDBOX0),
1540 GEN_FW_RANGE(0x1cd000, 0x1cdfff, FORCEWAKE_MEDIA_VDBOX2),
1541 GEN_FW_RANGE(0x1ce000, 0x1cefff, FORCEWAKE_MEDIA_VDBOX4),
1542 GEN_FW_RANGE(0x1cf000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX6),
1543 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /*
1544 0x1d0000 - 0x1d2bff: VD2
1545 0x1d2c00 - 0x1d2cff: reserved
1546 0x1d2d00 - 0x1d2dff: VD2
1547 0x1d2e00 - 0x1d3dff: VD2
1548 0x1d3e00 - 0x1d3eff: reserved
1549 0x1d3f00 - 0x1d3fff: VD2 */
1550 GEN_FW_RANGE(0x1d4000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX3), /*
1551 0x1d4000 - 0x1d6bff: VD3
1552 0x1d6c00 - 0x1d6cff: reserved
1553 0x1d6d00 - 0x1d6dff: VD3
1554 0x1d6e00 - 0x1d7fff: reserved */
1555 GEN_FW_RANGE(0x1d8000, 0x1dffff, FORCEWAKE_MEDIA_VEBOX1), /*
1556 0x1d8000 - 0x1da0ff: VE1
1557 0x1da100 - 0x1dffff: reserved */
1558 GEN_FW_RANGE(0x1e0000, 0x1e3fff, FORCEWAKE_MEDIA_VDBOX4), /*
1559 0x1e0000 - 0x1e2bff: VD4
1560 0x1e2c00 - 0x1e2cff: reserved
1561 0x1e2d00 - 0x1e2dff: VD4
1562 0x1e2e00 - 0x1e3eff: reserved
1563 0x1e3f00 - 0x1e3fff: VD4 */
1564 GEN_FW_RANGE(0x1e4000, 0x1e7fff, FORCEWAKE_MEDIA_VDBOX5), /*
1565 0x1e4000 - 0x1e6bff: VD5
1566 0x1e6c00 - 0x1e6cff: reserved
1567 0x1e6d00 - 0x1e6dff: VD5
1568 0x1e6e00 - 0x1e7fff: reserved */
1569 GEN_FW_RANGE(0x1e8000, 0x1effff, FORCEWAKE_MEDIA_VEBOX2), /*
1570 0x1e8000 - 0x1ea0ff: VE2
1571 0x1ea100 - 0x1effff: reserved */
1572 GEN_FW_RANGE(0x1f0000, 0x1f3fff, FORCEWAKE_MEDIA_VDBOX6), /*
1573 0x1f0000 - 0x1f2bff: VD6
1574 0x1f2c00 - 0x1f2cff: reserved
1575 0x1f2d00 - 0x1f2dff: VD6
1576 0x1f2e00 - 0x1f3eff: reserved
1577 0x1f3f00 - 0x1f3fff: VD6 */
1578 GEN_FW_RANGE(0x1f4000, 0x1f7fff, FORCEWAKE_MEDIA_VDBOX7), /*
1579 0x1f4000 - 0x1f6bff: VD7
1580 0x1f6c00 - 0x1f6cff: reserved
1581 0x1f6d00 - 0x1f6dff: VD7
1582 0x1f6e00 - 0x1f7fff: reserved */
1583 GEN_FW_RANGE(0x1f8000, 0x1fa0ff, FORCEWAKE_MEDIA_VEBOX3),
1584};
1585
1586static const struct intel_forcewake_range __mtl_fw_ranges[] = {
1587 GEN_FW_RANGE(0x0, 0xaff, 0),
1588 GEN_FW_RANGE(0xb00, 0xbff, FORCEWAKE_GT),
1589 GEN_FW_RANGE(0xc00, 0xfff, 0),
1590 GEN_FW_RANGE(0x1000, 0x1fff, FORCEWAKE_GT),
1591 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1592 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT),
1593 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1594 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), /*
1595 0x4000 - 0x48ff: render
1596 0x4900 - 0x51ff: reserved */
1597 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), /*
1598 0x5200 - 0x53ff: render
1599 0x5400 - 0x54ff: reserved
1600 0x5500 - 0x7fff: render */
1601 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT),
1602 GEN_FW_RANGE(0x8140, 0x817f, FORCEWAKE_RENDER), /*
1603 0x8140 - 0x815f: render
1604 0x8160 - 0x817f: reserved */
1605 GEN_FW_RANGE(0x8180, 0x81ff, 0),
1606 GEN_FW_RANGE(0x8200, 0x94cf, FORCEWAKE_GT), /*
1607 0x8200 - 0x87ff: gt
1608 0x8800 - 0x8dff: reserved
1609 0x8e00 - 0x8f7f: gt
1610 0x8f80 - 0x8fff: reserved
1611 0x9000 - 0x947f: gt
1612 0x9480 - 0x94cf: reserved */
1613 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER),
1614 GEN_FW_RANGE(0x9560, 0x967f, 0), /*
1615 0x9560 - 0x95ff: always on
1616 0x9600 - 0x967f: reserved */
1617 GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /*
1618 0x9680 - 0x96ff: render
1619 0x9700 - 0x97ff: reserved */
1620 GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /*
1621 0x9800 - 0xb4ff: gt
1622 0xb500 - 0xbfff: reserved
1623 0xc000 - 0xcfff: gt */
1624 GEN_FW_RANGE(0xd000, 0xd7ff, 0), /*
1625 0xd000 - 0xd3ff: always on
1626 0xd400 - 0xd7ff: reserved */
1627 GEN_FW_RANGE(0xd800, 0xd87f, FORCEWAKE_RENDER),
1628 GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT),
1629 GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER),
1630 GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /*
1631 0xdd00 - 0xddff: gt
1632 0xde00 - 0xde7f: reserved */
1633 GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /*
1634 0xde80 - 0xdfff: render
1635 0xe000 - 0xe0ff: reserved
1636 0xe100 - 0xe8ff: render */
1637 GEN_FW_RANGE(0xe900, 0xe9ff, FORCEWAKE_GT),
1638 GEN_FW_RANGE(0xea00, 0x147ff, 0), /*
1639 0xea00 - 0x11fff: reserved
1640 0x12000 - 0x127ff: always on
1641 0x12800 - 0x147ff: reserved */
1642 GEN_FW_RANGE(0x14800, 0x19fff, FORCEWAKE_GT), /*
1643 0x14800 - 0x153ff: gt
1644 0x15400 - 0x19fff: reserved */
1645 GEN_FW_RANGE(0x1a000, 0x21fff, FORCEWAKE_RENDER), /*
1646 0x1a000 - 0x1bfff: render
1647 0x1c000 - 0x21fff: reserved */
1648 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT),
1649 GEN_FW_RANGE(0x24000, 0x2ffff, 0), /*
1650 0x24000 - 0x2407f: always on
1651 0x24080 - 0x2ffff: reserved */
1652 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT),
1653 GEN_FW_RANGE(0x40000, 0x1901ef, 0),
1654 GEN_FW_RANGE(0x1901f0, 0x1901f3, FORCEWAKE_GT)
1655 /* FIXME: WA to wake GT while triggering H2G */
1656};
1657
1658/*
1659 * Note that the register ranges here are the final offsets after
1660 * translation of the GSI block to the 0x380000 offset.
1661 *
1662 * NOTE: There are a couple MCR ranges near the bottom of this table
1663 * that need to power up either VD0 or VD2 depending on which replicated
1664 * instance of the register we're trying to access. Our forcewake logic
1665 * at the moment doesn't have a good way to take steering into consideration,
1666 * and the driver doesn't even access any registers in those ranges today,
1667 * so for now we just mark those ranges as FORCEWAKE_ALL. That will ensure
1668 * proper operation if we do start using the ranges in the future, and we
1669 * can determine at that time whether it's worth adding extra complexity to
1670 * the forcewake handling to take steering into consideration.
1671 */
1672static const struct intel_forcewake_range __xelpmp_fw_ranges[] = {
1673 GEN_FW_RANGE(0x0, 0x115fff, 0), /* render GT range */
1674 GEN_FW_RANGE(0x116000, 0x11ffff, FORCEWAKE_GSC), /*
1675 0x116000 - 0x117fff: gsc
1676 0x118000 - 0x119fff: reserved
1677 0x11a000 - 0x11efff: gsc
1678 0x11f000 - 0x11ffff: reserved */
1679 GEN_FW_RANGE(0x120000, 0x1bffff, 0), /* non-GT range */
1680 GEN_FW_RANGE(0x1c0000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX0), /*
1681 0x1c0000 - 0x1c3dff: VD0
1682 0x1c3e00 - 0x1c3eff: reserved
1683 0x1c3f00 - 0x1c3fff: VD0
1684 0x1c4000 - 0x1c7fff: reserved */
1685 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /*
1686 0x1c8000 - 0x1ca0ff: VE0
1687 0x1ca100 - 0x1cbfff: reserved */
1688 GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /*
1689 0x1cc000 - 0x1cdfff: VD0
1690 0x1ce000 - 0x1cffff: reserved */
1691 GEN_FW_RANGE(0x1d0000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX2), /*
1692 0x1d0000 - 0x1d3dff: VD2
1693 0x1d3e00 - 0x1d3eff: reserved
1694 0x1d4000 - 0x1d7fff: VD2 */
1695 GEN_FW_RANGE(0x1d8000, 0x1da0ff, FORCEWAKE_MEDIA_VEBOX1),
1696 GEN_FW_RANGE(0x1da100, 0x380aff, 0), /*
1697 0x1da100 - 0x23ffff: reserved
1698 0x240000 - 0x37ffff: non-GT range
1699 0x380000 - 0x380aff: reserved */
1700 GEN_FW_RANGE(0x380b00, 0x380bff, FORCEWAKE_GT),
1701 GEN_FW_RANGE(0x380c00, 0x380fff, 0),
1702 GEN_FW_RANGE(0x381000, 0x38817f, FORCEWAKE_GT), /*
1703 0x381000 - 0x381fff: gt
1704 0x382000 - 0x383fff: reserved
1705 0x384000 - 0x384aff: gt
1706 0x384b00 - 0x3851ff: reserved
1707 0x385200 - 0x3871ff: gt
1708 0x387200 - 0x387fff: reserved
1709 0x388000 - 0x38813f: gt
1710 0x388140 - 0x38817f: reserved */
1711 GEN_FW_RANGE(0x388180, 0x3882ff, 0), /*
1712 0x388180 - 0x3881ff: always on
1713 0x388200 - 0x3882ff: reserved */
1714 GEN_FW_RANGE(0x388300, 0x38955f, FORCEWAKE_GT), /*
1715 0x388300 - 0x38887f: gt
1716 0x388880 - 0x388fff: reserved
1717 0x389000 - 0x38947f: gt
1718 0x389480 - 0x38955f: reserved */
1719 GEN_FW_RANGE(0x389560, 0x389fff, 0), /*
1720 0x389560 - 0x3895ff: always on
1721 0x389600 - 0x389fff: reserved */
1722 GEN_FW_RANGE(0x38a000, 0x38cfff, FORCEWAKE_GT), /*
1723 0x38a000 - 0x38afff: gt
1724 0x38b000 - 0x38bfff: reserved
1725 0x38c000 - 0x38cfff: gt */
1726 GEN_FW_RANGE(0x38d000, 0x38d11f, 0),
1727 GEN_FW_RANGE(0x38d120, 0x391fff, FORCEWAKE_GT), /*
1728 0x38d120 - 0x38dfff: gt
1729 0x38e000 - 0x38efff: reserved
1730 0x38f000 - 0x38ffff: gt
1731 0x389000 - 0x391fff: reserved */
1732 GEN_FW_RANGE(0x392000, 0x392fff, 0), /*
1733 0x392000 - 0x3927ff: always on
1734 0x392800 - 0x292fff: reserved */
1735 GEN_FW_RANGE(0x393000, 0x3931ff, FORCEWAKE_GT),
1736 GEN_FW_RANGE(0x393200, 0x39323f, FORCEWAKE_ALL), /* instance-based, see note above */
1737 GEN_FW_RANGE(0x393240, 0x3933ff, FORCEWAKE_GT),
1738 GEN_FW_RANGE(0x393400, 0x3934ff, FORCEWAKE_ALL), /* instance-based, see note above */
1739 GEN_FW_RANGE(0x393500, 0x393c7f, 0), /*
1740 0x393500 - 0x393bff: reserved
1741 0x393c00 - 0x393c7f: always on */
1742 GEN_FW_RANGE(0x393c80, 0x393dff, FORCEWAKE_GT),
1743};
1744
1745static void
1746ilk_dummy_write(struct intel_uncore *uncore)
1747{
1748 /* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up
1749 * the chip from rc6 before touching it for real. MI_MODE is masked,
1750 * hence harmless to write 0 into. */
1751 __raw_uncore_write32(uncore, RING_MI_MODE(RENDER_RING_BASE), 0);
1752}
1753
1754static void
1755__unclaimed_reg_debug(struct intel_uncore *uncore,
1756 const i915_reg_t reg,
1757 const bool read)
1758{
1759 if (drm_WARN(&uncore->i915->drm,
1760 check_for_unclaimed_mmio(uncore),
1761 "Unclaimed %s register 0x%x\n",
1762 read ? "read from" : "write to",
1763 i915_mmio_reg_offset(reg)))
1764 /* Only report the first N failures */
1765 uncore->i915->params.mmio_debug--;
1766}
1767
1768static void
1769__unclaimed_previous_reg_debug(struct intel_uncore *uncore,
1770 const i915_reg_t reg,
1771 const bool read)
1772{
1773 if (check_for_unclaimed_mmio(uncore))
1774 drm_dbg(&uncore->i915->drm,
1775 "Unclaimed access detected before %s register 0x%x\n",
1776 read ? "read from" : "write to",
1777 i915_mmio_reg_offset(reg));
1778}
1779
1780static inline bool __must_check
1781unclaimed_reg_debug_header(struct intel_uncore *uncore,
1782 const i915_reg_t reg, const bool read)
1783{
1784 if (likely(!uncore->i915->params.mmio_debug) || !uncore->debug)
1785 return false;
1786
1787 /* interrupts are disabled and re-enabled around uncore->lock usage */
1788 lockdep_assert_held(&uncore->lock);
1789
1790 spin_lock(&uncore->debug->lock);
1791 __unclaimed_previous_reg_debug(uncore, reg, read);
1792
1793 return true;
1794}
1795
1796static inline void
1797unclaimed_reg_debug_footer(struct intel_uncore *uncore,
1798 const i915_reg_t reg, const bool read)
1799{
1800 /* interrupts are disabled and re-enabled around uncore->lock usage */
1801 lockdep_assert_held(&uncore->lock);
1802
1803 __unclaimed_reg_debug(uncore, reg, read);
1804 spin_unlock(&uncore->debug->lock);
1805}
1806
1807#define __vgpu_read(x) \
1808static u##x \
1809vgpu_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1810 u##x val = __raw_uncore_read##x(uncore, reg); \
1811 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
1812 return val; \
1813}
1814__vgpu_read(8)
1815__vgpu_read(16)
1816__vgpu_read(32)
1817__vgpu_read(64)
1818
1819#define GEN2_READ_HEADER(x) \
1820 u##x val = 0; \
1821 assert_rpm_wakelock_held(uncore->rpm);
1822
1823#define GEN2_READ_FOOTER \
1824 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
1825 return val
1826
1827#define __gen2_read(x) \
1828static u##x \
1829gen2_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1830 GEN2_READ_HEADER(x); \
1831 val = __raw_uncore_read##x(uncore, reg); \
1832 GEN2_READ_FOOTER; \
1833}
1834
1835#define __gen5_read(x) \
1836static u##x \
1837gen5_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1838 GEN2_READ_HEADER(x); \
1839 ilk_dummy_write(uncore); \
1840 val = __raw_uncore_read##x(uncore, reg); \
1841 GEN2_READ_FOOTER; \
1842}
1843
1844__gen5_read(8)
1845__gen5_read(16)
1846__gen5_read(32)
1847__gen5_read(64)
1848__gen2_read(8)
1849__gen2_read(16)
1850__gen2_read(32)
1851__gen2_read(64)
1852
1853#undef __gen5_read
1854#undef __gen2_read
1855
1856#undef GEN2_READ_FOOTER
1857#undef GEN2_READ_HEADER
1858
1859#define GEN6_READ_HEADER(x) \
1860 u32 offset = i915_mmio_reg_offset(reg); \
1861 unsigned long irqflags; \
1862 bool unclaimed_reg_debug; \
1863 u##x val = 0; \
1864 assert_rpm_wakelock_held(uncore->rpm); \
1865 spin_lock_irqsave(&uncore->lock, irqflags); \
1866 unclaimed_reg_debug = unclaimed_reg_debug_header(uncore, reg, true)
1867
1868#define GEN6_READ_FOOTER \
1869 if (unclaimed_reg_debug) \
1870 unclaimed_reg_debug_footer(uncore, reg, true); \
1871 spin_unlock_irqrestore(&uncore->lock, irqflags); \
1872 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
1873 return val
1874
1875static noinline void ___force_wake_auto(struct intel_uncore *uncore,
1876 enum forcewake_domains fw_domains)
1877{
1878 struct intel_uncore_forcewake_domain *domain;
1879 unsigned int tmp;
1880
1881 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
1882
1883 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp)
1884 fw_domain_arm_timer(domain);
1885
1886 fw_domains_get(uncore, fw_domains);
1887}
1888
1889static inline void __force_wake_auto(struct intel_uncore *uncore,
1890 enum forcewake_domains fw_domains)
1891{
1892 GEM_BUG_ON(!fw_domains);
1893
1894 /* Turn on all requested but inactive supported forcewake domains. */
1895 fw_domains &= uncore->fw_domains;
1896 fw_domains &= ~uncore->fw_domains_active;
1897
1898 if (fw_domains)
1899 ___force_wake_auto(uncore, fw_domains);
1900}
1901
1902#define __gen_fwtable_read(x) \
1903static u##x \
1904fwtable_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) \
1905{ \
1906 enum forcewake_domains fw_engine; \
1907 GEN6_READ_HEADER(x); \
1908 fw_engine = __fwtable_reg_read_fw_domains(uncore, offset); \
1909 if (fw_engine) \
1910 __force_wake_auto(uncore, fw_engine); \
1911 val = __raw_uncore_read##x(uncore, reg); \
1912 GEN6_READ_FOOTER; \
1913}
1914
1915static enum forcewake_domains
1916fwtable_reg_read_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) {
1917 return __fwtable_reg_read_fw_domains(uncore, i915_mmio_reg_offset(reg));
1918}
1919
1920__gen_fwtable_read(8)
1921__gen_fwtable_read(16)
1922__gen_fwtable_read(32)
1923__gen_fwtable_read(64)
1924
1925#undef __gen_fwtable_read
1926#undef GEN6_READ_FOOTER
1927#undef GEN6_READ_HEADER
1928
1929#define GEN2_WRITE_HEADER \
1930 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
1931 assert_rpm_wakelock_held(uncore->rpm); \
1932
1933#define GEN2_WRITE_FOOTER
1934
1935#define __gen2_write(x) \
1936static void \
1937gen2_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1938 GEN2_WRITE_HEADER; \
1939 __raw_uncore_write##x(uncore, reg, val); \
1940 GEN2_WRITE_FOOTER; \
1941}
1942
1943#define __gen5_write(x) \
1944static void \
1945gen5_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1946 GEN2_WRITE_HEADER; \
1947 ilk_dummy_write(uncore); \
1948 __raw_uncore_write##x(uncore, reg, val); \
1949 GEN2_WRITE_FOOTER; \
1950}
1951
1952__gen5_write(8)
1953__gen5_write(16)
1954__gen5_write(32)
1955__gen2_write(8)
1956__gen2_write(16)
1957__gen2_write(32)
1958
1959#undef __gen5_write
1960#undef __gen2_write
1961
1962#undef GEN2_WRITE_FOOTER
1963#undef GEN2_WRITE_HEADER
1964
1965#define GEN6_WRITE_HEADER \
1966 u32 offset = i915_mmio_reg_offset(reg); \
1967 unsigned long irqflags; \
1968 bool unclaimed_reg_debug; \
1969 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
1970 assert_rpm_wakelock_held(uncore->rpm); \
1971 spin_lock_irqsave(&uncore->lock, irqflags); \
1972 unclaimed_reg_debug = unclaimed_reg_debug_header(uncore, reg, false)
1973
1974#define GEN6_WRITE_FOOTER \
1975 if (unclaimed_reg_debug) \
1976 unclaimed_reg_debug_footer(uncore, reg, false); \
1977 spin_unlock_irqrestore(&uncore->lock, irqflags)
1978
1979#define __gen6_write(x) \
1980static void \
1981gen6_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1982 GEN6_WRITE_HEADER; \
1983 if (NEEDS_FORCE_WAKE(offset)) \
1984 __gen6_gt_wait_for_fifo(uncore); \
1985 __raw_uncore_write##x(uncore, reg, val); \
1986 GEN6_WRITE_FOOTER; \
1987}
1988__gen6_write(8)
1989__gen6_write(16)
1990__gen6_write(32)
1991
1992#define __gen_fwtable_write(x) \
1993static void \
1994fwtable_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1995 enum forcewake_domains fw_engine; \
1996 GEN6_WRITE_HEADER; \
1997 fw_engine = __fwtable_reg_write_fw_domains(uncore, offset); \
1998 if (fw_engine) \
1999 __force_wake_auto(uncore, fw_engine); \
2000 __raw_uncore_write##x(uncore, reg, val); \
2001 GEN6_WRITE_FOOTER; \
2002}
2003
2004static enum forcewake_domains
2005fwtable_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
2006{
2007 return __fwtable_reg_write_fw_domains(uncore, i915_mmio_reg_offset(reg));
2008}
2009
2010__gen_fwtable_write(8)
2011__gen_fwtable_write(16)
2012__gen_fwtable_write(32)
2013
2014#undef __gen_fwtable_write
2015#undef GEN6_WRITE_FOOTER
2016#undef GEN6_WRITE_HEADER
2017
2018#define __vgpu_write(x) \
2019static void \
2020vgpu_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
2021 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
2022 __raw_uncore_write##x(uncore, reg, val); \
2023}
2024__vgpu_write(8)
2025__vgpu_write(16)
2026__vgpu_write(32)
2027
2028#define ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, x) \
2029do { \
2030 (uncore)->funcs.mmio_writeb = x##_write8; \
2031 (uncore)->funcs.mmio_writew = x##_write16; \
2032 (uncore)->funcs.mmio_writel = x##_write32; \
2033} while (0)
2034
2035#define ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x) \
2036do { \
2037 (uncore)->funcs.mmio_readb = x##_read8; \
2038 (uncore)->funcs.mmio_readw = x##_read16; \
2039 (uncore)->funcs.mmio_readl = x##_read32; \
2040 (uncore)->funcs.mmio_readq = x##_read64; \
2041} while (0)
2042
2043#define ASSIGN_WRITE_MMIO_VFUNCS(uncore, x) \
2044do { \
2045 ASSIGN_RAW_WRITE_MMIO_VFUNCS((uncore), x); \
2046 (uncore)->funcs.write_fw_domains = x##_reg_write_fw_domains; \
2047} while (0)
2048
2049#define ASSIGN_READ_MMIO_VFUNCS(uncore, x) \
2050do { \
2051 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x); \
2052 (uncore)->funcs.read_fw_domains = x##_reg_read_fw_domains; \
2053} while (0)
2054
2055static int __fw_domain_init(struct intel_uncore *uncore,
2056 enum forcewake_domain_id domain_id,
2057 i915_reg_t reg_set,
2058 i915_reg_t reg_ack)
2059{
2060 struct intel_uncore_forcewake_domain *d;
2061
2062 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
2063 GEM_BUG_ON(uncore->fw_domain[domain_id]);
2064
2065 if (i915_inject_probe_failure(uncore->i915))
2066 return -ENOMEM;
2067
2068 d = kzalloc(sizeof(*d), GFP_KERNEL);
2069 if (!d)
2070 return -ENOMEM;
2071
2072 drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_set));
2073 drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_ack));
2074
2075 d->uncore = uncore;
2076 d->wake_count = 0;
2077 d->reg_set = uncore->regs + i915_mmio_reg_offset(reg_set) + uncore->gsi_offset;
2078 d->reg_ack = uncore->regs + i915_mmio_reg_offset(reg_ack) + uncore->gsi_offset;
2079
2080 d->id = domain_id;
2081
2082 BUILD_BUG_ON(FORCEWAKE_RENDER != (1 << FW_DOMAIN_ID_RENDER));
2083 BUILD_BUG_ON(FORCEWAKE_GT != (1 << FW_DOMAIN_ID_GT));
2084 BUILD_BUG_ON(FORCEWAKE_MEDIA != (1 << FW_DOMAIN_ID_MEDIA));
2085 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX0));
2086 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX1));
2087 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX2));
2088 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX3));
2089 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX4 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX4));
2090 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX5 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX5));
2091 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX6 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX6));
2092 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX7 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX7));
2093 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0));
2094 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1));
2095 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX2));
2096 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX3));
2097 BUILD_BUG_ON(FORCEWAKE_GSC != (1 << FW_DOMAIN_ID_GSC));
2098
2099 d->mask = BIT(domain_id);
2100
2101 hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
2102 d->timer.function = intel_uncore_fw_release_timer;
2103
2104 uncore->fw_domains |= BIT(domain_id);
2105
2106 fw_domain_reset(d);
2107
2108 uncore->fw_domain[domain_id] = d;
2109
2110 return 0;
2111}
2112
2113static void fw_domain_fini(struct intel_uncore *uncore,
2114 enum forcewake_domain_id domain_id)
2115{
2116 struct intel_uncore_forcewake_domain *d;
2117
2118 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
2119
2120 d = fetch_and_zero(&uncore->fw_domain[domain_id]);
2121 if (!d)
2122 return;
2123
2124 uncore->fw_domains &= ~BIT(domain_id);
2125 drm_WARN_ON(&uncore->i915->drm, d->wake_count);
2126 drm_WARN_ON(&uncore->i915->drm, hrtimer_cancel(&d->timer));
2127 kfree(d);
2128}
2129
2130static void intel_uncore_fw_domains_fini(struct intel_uncore *uncore)
2131{
2132 struct intel_uncore_forcewake_domain *d;
2133 int tmp;
2134
2135 for_each_fw_domain(d, uncore, tmp)
2136 fw_domain_fini(uncore, d->id);
2137}
2138
2139static const struct intel_uncore_fw_get uncore_get_fallback = {
2140 .force_wake_get = fw_domains_get_with_fallback
2141};
2142
2143static const struct intel_uncore_fw_get uncore_get_normal = {
2144 .force_wake_get = fw_domains_get_normal,
2145};
2146
2147static const struct intel_uncore_fw_get uncore_get_thread_status = {
2148 .force_wake_get = fw_domains_get_with_thread_status
2149};
2150
2151static int intel_uncore_fw_domains_init(struct intel_uncore *uncore)
2152{
2153 struct drm_i915_private *i915 = uncore->i915;
2154 int ret = 0;
2155
2156 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
2157
2158#define fw_domain_init(uncore__, id__, set__, ack__) \
2159 (ret ?: (ret = __fw_domain_init((uncore__), (id__), (set__), (ack__))))
2160
2161 if (GRAPHICS_VER(i915) >= 11) {
2162 intel_engine_mask_t emask;
2163 int i;
2164
2165 /* we'll prune the domains of missing engines later */
2166 emask = uncore->gt->info.engine_mask;
2167
2168 uncore->fw_get_funcs = &uncore_get_fallback;
2169 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
2170 fw_domain_init(uncore, FW_DOMAIN_ID_GT,
2171 FORCEWAKE_GT_GEN9,
2172 FORCEWAKE_ACK_GT_MTL);
2173 else
2174 fw_domain_init(uncore, FW_DOMAIN_ID_GT,
2175 FORCEWAKE_GT_GEN9,
2176 FORCEWAKE_ACK_GT_GEN9);
2177
2178 if (RCS_MASK(uncore->gt) || CCS_MASK(uncore->gt))
2179 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2180 FORCEWAKE_RENDER_GEN9,
2181 FORCEWAKE_ACK_RENDER_GEN9);
2182
2183 for (i = 0; i < I915_MAX_VCS; i++) {
2184 if (!__HAS_ENGINE(emask, _VCS(i)))
2185 continue;
2186
2187 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VDBOX0 + i,
2188 FORCEWAKE_MEDIA_VDBOX_GEN11(i),
2189 FORCEWAKE_ACK_MEDIA_VDBOX_GEN11(i));
2190 }
2191 for (i = 0; i < I915_MAX_VECS; i++) {
2192 if (!__HAS_ENGINE(emask, _VECS(i)))
2193 continue;
2194
2195 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VEBOX0 + i,
2196 FORCEWAKE_MEDIA_VEBOX_GEN11(i),
2197 FORCEWAKE_ACK_MEDIA_VEBOX_GEN11(i));
2198 }
2199
2200 if (uncore->gt->type == GT_MEDIA)
2201 fw_domain_init(uncore, FW_DOMAIN_ID_GSC,
2202 FORCEWAKE_REQ_GSC, FORCEWAKE_ACK_GSC);
2203 } else if (IS_GRAPHICS_VER(i915, 9, 10)) {
2204 uncore->fw_get_funcs = &uncore_get_fallback;
2205 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2206 FORCEWAKE_RENDER_GEN9,
2207 FORCEWAKE_ACK_RENDER_GEN9);
2208 fw_domain_init(uncore, FW_DOMAIN_ID_GT,
2209 FORCEWAKE_GT_GEN9,
2210 FORCEWAKE_ACK_GT_GEN9);
2211 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
2212 FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9);
2213 } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
2214 uncore->fw_get_funcs = &uncore_get_normal;
2215 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2216 FORCEWAKE_VLV, FORCEWAKE_ACK_VLV);
2217 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
2218 FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV);
2219 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
2220 uncore->fw_get_funcs = &uncore_get_thread_status;
2221 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2222 FORCEWAKE_MT, FORCEWAKE_ACK_HSW);
2223 } else if (IS_IVYBRIDGE(i915)) {
2224 u32 ecobus;
2225
2226 /* IVB configs may use multi-threaded forcewake */
2227
2228 /* A small trick here - if the bios hasn't configured
2229 * MT forcewake, and if the device is in RC6, then
2230 * force_wake_mt_get will not wake the device and the
2231 * ECOBUS read will return zero. Which will be
2232 * (correctly) interpreted by the test below as MT
2233 * forcewake being disabled.
2234 */
2235 uncore->fw_get_funcs = &uncore_get_thread_status;
2236
2237 /* We need to init first for ECOBUS access and then
2238 * determine later if we want to reinit, in case of MT access is
2239 * not working. In this stage we don't know which flavour this
2240 * ivb is, so it is better to reset also the gen6 fw registers
2241 * before the ecobus check.
2242 */
2243
2244 __raw_uncore_write32(uncore, FORCEWAKE, 0);
2245 __raw_posting_read(uncore, ECOBUS);
2246
2247 ret = __fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2248 FORCEWAKE_MT, FORCEWAKE_MT_ACK);
2249 if (ret)
2250 goto out;
2251
2252 spin_lock_irq(&uncore->lock);
2253 fw_domains_get_with_thread_status(uncore, FORCEWAKE_RENDER);
2254 ecobus = __raw_uncore_read32(uncore, ECOBUS);
2255 fw_domains_put(uncore, FORCEWAKE_RENDER);
2256 spin_unlock_irq(&uncore->lock);
2257
2258 if (!(ecobus & FORCEWAKE_MT_ENABLE)) {
2259 drm_info(&i915->drm, "No MT forcewake available on Ivybridge, this can result in issues\n");
2260 drm_info(&i915->drm, "when using vblank-synced partial screen updates.\n");
2261 fw_domain_fini(uncore, FW_DOMAIN_ID_RENDER);
2262 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2263 FORCEWAKE, FORCEWAKE_ACK);
2264 }
2265 } else if (GRAPHICS_VER(i915) == 6) {
2266 uncore->fw_get_funcs = &uncore_get_thread_status;
2267 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
2268 FORCEWAKE, FORCEWAKE_ACK);
2269 }
2270
2271#undef fw_domain_init
2272
2273 /* All future platforms are expected to require complex power gating */
2274 drm_WARN_ON(&i915->drm, !ret && uncore->fw_domains == 0);
2275
2276out:
2277 if (ret)
2278 intel_uncore_fw_domains_fini(uncore);
2279
2280 return ret;
2281}
2282
2283#define ASSIGN_FW_DOMAINS_TABLE(uncore, d) \
2284{ \
2285 (uncore)->fw_domains_table = \
2286 (struct intel_forcewake_range *)(d); \
2287 (uncore)->fw_domains_table_entries = ARRAY_SIZE((d)); \
2288}
2289
2290#define ASSIGN_SHADOW_TABLE(uncore, d) \
2291{ \
2292 (uncore)->shadowed_reg_table = d; \
2293 (uncore)->shadowed_reg_table_entries = ARRAY_SIZE((d)); \
2294}
2295
2296static int i915_pmic_bus_access_notifier(struct notifier_block *nb,
2297 unsigned long action, void *data)
2298{
2299 struct intel_uncore *uncore = container_of(nb,
2300 struct intel_uncore, pmic_bus_access_nb);
2301
2302 switch (action) {
2303 case MBI_PMIC_BUS_ACCESS_BEGIN:
2304 /*
2305 * forcewake all now to make sure that we don't need to do a
2306 * forcewake later which on systems where this notifier gets
2307 * called requires the punit to access to the shared pmic i2c
2308 * bus, which will be busy after this notification, leading to:
2309 * "render: timed out waiting for forcewake ack request."
2310 * errors.
2311 *
2312 * The notifier is unregistered during intel_runtime_suspend(),
2313 * so it's ok to access the HW here without holding a RPM
2314 * wake reference -> disable wakeref asserts for the time of
2315 * the access.
2316 */
2317 disable_rpm_wakeref_asserts(uncore->rpm);
2318 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
2319 enable_rpm_wakeref_asserts(uncore->rpm);
2320 break;
2321 case MBI_PMIC_BUS_ACCESS_END:
2322 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
2323 break;
2324 }
2325
2326 return NOTIFY_OK;
2327}
2328
2329static void uncore_unmap_mmio(struct drm_device *drm, void *regs)
2330{
2331 iounmap((void __iomem *)regs);
2332}
2333
2334int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr)
2335{
2336 struct drm_i915_private *i915 = uncore->i915;
2337 int mmio_size;
2338
2339 /*
2340 * Before gen4, the registers and the GTT are behind different BARs.
2341 * However, from gen4 onwards, the registers and the GTT are shared
2342 * in the same BAR, so we want to restrict this ioremap from
2343 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
2344 * the register BAR remains the same size for all the earlier
2345 * generations up to Ironlake.
2346 * For dgfx chips register range is expanded to 4MB, and this larger
2347 * range is also used for integrated gpus beginning with Meteor Lake.
2348 */
2349 if (IS_DGFX(i915) || GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70))
2350 mmio_size = 4 * 1024 * 1024;
2351 else if (GRAPHICS_VER(i915) >= 5)
2352 mmio_size = 2 * 1024 * 1024;
2353 else
2354 mmio_size = 512 * 1024;
2355
2356 uncore->regs = ioremap(phys_addr, mmio_size);
2357 if (uncore->regs == NULL) {
2358 drm_err(&i915->drm, "failed to map registers\n");
2359 return -EIO;
2360 }
2361
2362 return drmm_add_action_or_reset(&i915->drm, uncore_unmap_mmio,
2363 (void __force *)uncore->regs);
2364}
2365
2366void intel_uncore_init_early(struct intel_uncore *uncore,
2367 struct intel_gt *gt)
2368{
2369 spin_lock_init(&uncore->lock);
2370 uncore->i915 = gt->i915;
2371 uncore->gt = gt;
2372 uncore->rpm = >->i915->runtime_pm;
2373}
2374
2375static void uncore_raw_init(struct intel_uncore *uncore)
2376{
2377 GEM_BUG_ON(intel_uncore_has_forcewake(uncore));
2378
2379 if (intel_vgpu_active(uncore->i915)) {
2380 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, vgpu);
2381 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, vgpu);
2382 } else if (GRAPHICS_VER(uncore->i915) == 5) {
2383 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen5);
2384 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen5);
2385 } else {
2386 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen2);
2387 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen2);
2388 }
2389}
2390
2391static int uncore_media_forcewake_init(struct intel_uncore *uncore)
2392{
2393 struct drm_i915_private *i915 = uncore->i915;
2394
2395 if (MEDIA_VER(i915) >= 13) {
2396 ASSIGN_FW_DOMAINS_TABLE(uncore, __xelpmp_fw_ranges);
2397 ASSIGN_SHADOW_TABLE(uncore, xelpmp_shadowed_regs);
2398 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2399 } else {
2400 MISSING_CASE(MEDIA_VER(i915));
2401 return -ENODEV;
2402 }
2403
2404 return 0;
2405}
2406
2407static int uncore_forcewake_init(struct intel_uncore *uncore)
2408{
2409 struct drm_i915_private *i915 = uncore->i915;
2410 int ret;
2411
2412 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
2413
2414 ret = intel_uncore_fw_domains_init(uncore);
2415 if (ret)
2416 return ret;
2417 forcewake_early_sanitize(uncore, 0);
2418
2419 ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
2420
2421 if (uncore->gt->type == GT_MEDIA)
2422 return uncore_media_forcewake_init(uncore);
2423
2424 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) {
2425 ASSIGN_FW_DOMAINS_TABLE(uncore, __mtl_fw_ranges);
2426 ASSIGN_SHADOW_TABLE(uncore, mtl_shadowed_regs);
2427 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2428 } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 55)) {
2429 ASSIGN_FW_DOMAINS_TABLE(uncore, __dg2_fw_ranges);
2430 ASSIGN_SHADOW_TABLE(uncore, dg2_shadowed_regs);
2431 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2432 } else if (GRAPHICS_VER(i915) >= 12) {
2433 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen12_fw_ranges);
2434 ASSIGN_SHADOW_TABLE(uncore, gen12_shadowed_regs);
2435 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2436 } else if (GRAPHICS_VER(i915) == 11) {
2437 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen11_fw_ranges);
2438 ASSIGN_SHADOW_TABLE(uncore, gen11_shadowed_regs);
2439 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2440 } else if (IS_GRAPHICS_VER(i915, 9, 10)) {
2441 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen9_fw_ranges);
2442 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
2443 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2444 } else if (IS_CHERRYVIEW(i915)) {
2445 ASSIGN_FW_DOMAINS_TABLE(uncore, __chv_fw_ranges);
2446 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
2447 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2448 } else if (GRAPHICS_VER(i915) == 8) {
2449 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges);
2450 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs);
2451 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
2452 } else if (IS_VALLEYVIEW(i915)) {
2453 ASSIGN_FW_DOMAINS_TABLE(uncore, __vlv_fw_ranges);
2454 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
2455 } else if (IS_GRAPHICS_VER(i915, 6, 7)) {
2456 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges);
2457 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
2458 }
2459
2460 uncore->pmic_bus_access_nb.notifier_call = i915_pmic_bus_access_notifier;
2461 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
2462
2463 return 0;
2464}
2465
2466static int sanity_check_mmio_access(struct intel_uncore *uncore)
2467{
2468 struct drm_i915_private *i915 = uncore->i915;
2469
2470 if (GRAPHICS_VER(i915) < 8)
2471 return 0;
2472
2473 /*
2474 * Sanitycheck that MMIO access to the device is working properly. If
2475 * the CPU is unable to communcate with a PCI device, BAR reads will
2476 * return 0xFFFFFFFF. Let's make sure the device isn't in this state
2477 * before we start trying to access registers.
2478 *
2479 * We use the primary GT's forcewake register as our guinea pig since
2480 * it's been around since HSW and it's a masked register so the upper
2481 * 16 bits can never read back as 1's if device access is operating
2482 * properly.
2483 *
2484 * If MMIO isn't working, we'll wait up to 2 seconds to see if it
2485 * recovers, then give up.
2486 */
2487#define COND (__raw_uncore_read32(uncore, FORCEWAKE_MT) != ~0)
2488 if (wait_for(COND, 2000) == -ETIMEDOUT) {
2489 drm_err(&i915->drm, "Device is non-operational; MMIO access returns 0xFFFFFFFF!\n");
2490 return -EIO;
2491 }
2492
2493 return 0;
2494}
2495
2496int intel_uncore_init_mmio(struct intel_uncore *uncore)
2497{
2498 struct drm_i915_private *i915 = uncore->i915;
2499 int ret;
2500
2501 ret = sanity_check_mmio_access(uncore);
2502 if (ret)
2503 return ret;
2504
2505 /*
2506 * The boot firmware initializes local memory and assesses its health.
2507 * If memory training fails, the punit will have been instructed to
2508 * keep the GT powered down; we won't be able to communicate with it
2509 * and we should not continue with driver initialization.
2510 */
2511 if (IS_DGFX(i915) &&
2512 !(__raw_uncore_read32(uncore, GU_CNTL) & LMEM_INIT)) {
2513 drm_err(&i915->drm, "LMEM not initialized by firmware\n");
2514 return -ENODEV;
2515 }
2516
2517 if (GRAPHICS_VER(i915) > 5 && !intel_vgpu_active(i915))
2518 uncore->flags |= UNCORE_HAS_FORCEWAKE;
2519
2520 if (!intel_uncore_has_forcewake(uncore)) {
2521 uncore_raw_init(uncore);
2522 } else {
2523 ret = uncore_forcewake_init(uncore);
2524 if (ret)
2525 return ret;
2526 }
2527
2528 /* make sure fw funcs are set if and only if we have fw*/
2529 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->fw_get_funcs);
2530 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.read_fw_domains);
2531 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.write_fw_domains);
2532
2533 if (HAS_FPGA_DBG_UNCLAIMED(i915))
2534 uncore->flags |= UNCORE_HAS_FPGA_DBG_UNCLAIMED;
2535
2536 if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
2537 uncore->flags |= UNCORE_HAS_DBG_UNCLAIMED;
2538
2539 if (IS_GRAPHICS_VER(i915, 6, 7))
2540 uncore->flags |= UNCORE_HAS_FIFO;
2541
2542 /* clear out unclaimed reg detection bit */
2543 if (intel_uncore_unclaimed_mmio(uncore))
2544 drm_dbg(&i915->drm, "unclaimed mmio detected on uncore init, clearing\n");
2545
2546 return 0;
2547}
2548
2549/*
2550 * We might have detected that some engines are fused off after we initialized
2551 * the forcewake domains. Prune them, to make sure they only reference existing
2552 * engines.
2553 */
2554void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore,
2555 struct intel_gt *gt)
2556{
2557 enum forcewake_domains fw_domains = uncore->fw_domains;
2558 enum forcewake_domain_id domain_id;
2559 int i;
2560
2561 if (!intel_uncore_has_forcewake(uncore) || GRAPHICS_VER(uncore->i915) < 11)
2562 return;
2563
2564 for (i = 0; i < I915_MAX_VCS; i++) {
2565 domain_id = FW_DOMAIN_ID_MEDIA_VDBOX0 + i;
2566
2567 if (HAS_ENGINE(gt, _VCS(i)))
2568 continue;
2569
2570 /*
2571 * Starting with XeHP, the power well for an even-numbered
2572 * VDBOX is also used for shared units within the
2573 * media slice such as SFC. So even if the engine
2574 * itself is fused off, we still need to initialize
2575 * the forcewake domain if any of the other engines
2576 * in the same media slice are present.
2577 */
2578 if (GRAPHICS_VER_FULL(uncore->i915) >= IP_VER(12, 55) && i % 2 == 0) {
2579 if ((i + 1 < I915_MAX_VCS) && HAS_ENGINE(gt, _VCS(i + 1)))
2580 continue;
2581
2582 if (HAS_ENGINE(gt, _VECS(i / 2)))
2583 continue;
2584 }
2585
2586 if (fw_domains & BIT(domain_id))
2587 fw_domain_fini(uncore, domain_id);
2588 }
2589
2590 for (i = 0; i < I915_MAX_VECS; i++) {
2591 domain_id = FW_DOMAIN_ID_MEDIA_VEBOX0 + i;
2592
2593 if (HAS_ENGINE(gt, _VECS(i)))
2594 continue;
2595
2596 if (fw_domains & BIT(domain_id))
2597 fw_domain_fini(uncore, domain_id);
2598 }
2599
2600 if ((fw_domains & BIT(FW_DOMAIN_ID_GSC)) && !HAS_ENGINE(gt, GSC0))
2601 fw_domain_fini(uncore, FW_DOMAIN_ID_GSC);
2602}
2603
2604/*
2605 * The driver-initiated FLR is the highest level of reset that we can trigger
2606 * from within the driver. It is different from the PCI FLR in that it doesn't
2607 * fully reset the SGUnit and doesn't modify the PCI config space and therefore
2608 * it doesn't require a re-enumeration of the PCI BARs. However, the
2609 * driver-initiated FLR does still cause a reset of both GT and display and a
2610 * memory wipe of local and stolen memory, so recovery would require a full HW
2611 * re-init and saving/restoring (or re-populating) the wiped memory. Since we
2612 * perform the FLR as the very last action before releasing access to the HW
2613 * during the driver release flow, we don't attempt recovery at all, because
2614 * if/when a new instance of i915 is bound to the device it will do a full
2615 * re-init anyway.
2616 */
2617static void driver_initiated_flr(struct intel_uncore *uncore)
2618{
2619 struct drm_i915_private *i915 = uncore->i915;
2620 unsigned int flr_timeout_ms;
2621 int ret;
2622
2623 drm_dbg(&i915->drm, "Triggering Driver-FLR\n");
2624
2625 /*
2626 * The specification recommends a 3 seconds FLR reset timeout. To be
2627 * cautious, we will extend this to 9 seconds, three times the specified
2628 * timeout.
2629 */
2630 flr_timeout_ms = 9000;
2631
2632 /*
2633 * Make sure any pending FLR requests have cleared by waiting for the
2634 * FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS
2635 * to make sure it's not still set from a prior attempt (it's a write to
2636 * clear bit).
2637 * Note that we should never be in a situation where a previous attempt
2638 * is still pending (unless the HW is totally dead), but better to be
2639 * safe in case something unexpected happens
2640 */
2641 ret = intel_wait_for_register_fw(uncore, GU_CNTL, DRIVERFLR, 0, flr_timeout_ms);
2642 if (ret) {
2643 drm_err(&i915->drm,
2644 "Failed to wait for Driver-FLR bit to clear! %d\n",
2645 ret);
2646 return;
2647 }
2648 intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS);
2649
2650 /* Trigger the actual Driver-FLR */
2651 intel_uncore_rmw_fw(uncore, GU_CNTL, 0, DRIVERFLR);
2652
2653 /* Wait for hardware teardown to complete */
2654 ret = intel_wait_for_register_fw(uncore, GU_CNTL,
2655 DRIVERFLR, 0,
2656 flr_timeout_ms);
2657 if (ret) {
2658 drm_err(&i915->drm, "Driver-FLR-teardown wait completion failed! %d\n", ret);
2659 return;
2660 }
2661
2662 /* Wait for hardware/firmware re-init to complete */
2663 ret = intel_wait_for_register_fw(uncore, GU_DEBUG,
2664 DRIVERFLR_STATUS, DRIVERFLR_STATUS,
2665 flr_timeout_ms);
2666 if (ret) {
2667 drm_err(&i915->drm, "Driver-FLR-reinit wait completion failed! %d\n", ret);
2668 return;
2669 }
2670
2671 /* Clear sticky completion status */
2672 intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS);
2673}
2674
2675/* Called via drm-managed action */
2676void intel_uncore_fini_mmio(struct drm_device *dev, void *data)
2677{
2678 struct intel_uncore *uncore = data;
2679
2680 if (intel_uncore_has_forcewake(uncore)) {
2681 iosf_mbi_punit_acquire();
2682 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
2683 &uncore->pmic_bus_access_nb);
2684 intel_uncore_forcewake_reset(uncore);
2685 intel_uncore_fw_domains_fini(uncore);
2686 iosf_mbi_punit_release();
2687 }
2688
2689 if (intel_uncore_needs_flr_on_fini(uncore))
2690 driver_initiated_flr(uncore);
2691}
2692
2693/**
2694 * __intel_wait_for_register_fw - wait until register matches expected state
2695 * @uncore: the struct intel_uncore
2696 * @reg: the register to read
2697 * @mask: mask to apply to register value
2698 * @value: expected value
2699 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
2700 * @slow_timeout_ms: slow timeout in millisecond
2701 * @out_value: optional placeholder to hold registry value
2702 *
2703 * This routine waits until the target register @reg contains the expected
2704 * @value after applying the @mask, i.e. it waits until ::
2705 *
2706 * (intel_uncore_read_fw(uncore, reg) & mask) == value
2707 *
2708 * Otherwise, the wait will timeout after @slow_timeout_ms milliseconds.
2709 * For atomic context @slow_timeout_ms must be zero and @fast_timeout_us
2710 * must be not larger than 20,0000 microseconds.
2711 *
2712 * Note that this routine assumes the caller holds forcewake asserted, it is
2713 * not suitable for very long waits. See intel_wait_for_register() if you
2714 * wish to wait without holding forcewake for the duration (i.e. you expect
2715 * the wait to be slow).
2716 *
2717 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
2718 */
2719int __intel_wait_for_register_fw(struct intel_uncore *uncore,
2720 i915_reg_t reg,
2721 u32 mask,
2722 u32 value,
2723 unsigned int fast_timeout_us,
2724 unsigned int slow_timeout_ms,
2725 u32 *out_value)
2726{
2727 u32 reg_value = 0;
2728#define done (((reg_value = intel_uncore_read_fw(uncore, reg)) & mask) == value)
2729 int ret;
2730
2731 /* Catch any overuse of this function */
2732 might_sleep_if(slow_timeout_ms);
2733 GEM_BUG_ON(fast_timeout_us > 20000);
2734 GEM_BUG_ON(!fast_timeout_us && !slow_timeout_ms);
2735
2736 ret = -ETIMEDOUT;
2737 if (fast_timeout_us && fast_timeout_us <= 20000)
2738 ret = _wait_for_atomic(done, fast_timeout_us, 0);
2739 if (ret && slow_timeout_ms)
2740 ret = wait_for(done, slow_timeout_ms);
2741
2742 if (out_value)
2743 *out_value = reg_value;
2744
2745 return ret;
2746#undef done
2747}
2748
2749/**
2750 * __intel_wait_for_register - wait until register matches expected state
2751 * @uncore: the struct intel_uncore
2752 * @reg: the register to read
2753 * @mask: mask to apply to register value
2754 * @value: expected value
2755 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
2756 * @slow_timeout_ms: slow timeout in millisecond
2757 * @out_value: optional placeholder to hold registry value
2758 *
2759 * This routine waits until the target register @reg contains the expected
2760 * @value after applying the @mask, i.e. it waits until ::
2761 *
2762 * (intel_uncore_read(uncore, reg) & mask) == value
2763 *
2764 * Otherwise, the wait will timeout after @timeout_ms milliseconds.
2765 *
2766 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
2767 */
2768int __intel_wait_for_register(struct intel_uncore *uncore,
2769 i915_reg_t reg,
2770 u32 mask,
2771 u32 value,
2772 unsigned int fast_timeout_us,
2773 unsigned int slow_timeout_ms,
2774 u32 *out_value)
2775{
2776 unsigned fw =
2777 intel_uncore_forcewake_for_reg(uncore, reg, FW_REG_READ);
2778 u32 reg_value;
2779 int ret;
2780
2781 might_sleep_if(slow_timeout_ms);
2782
2783 spin_lock_irq(&uncore->lock);
2784 intel_uncore_forcewake_get__locked(uncore, fw);
2785
2786 ret = __intel_wait_for_register_fw(uncore,
2787 reg, mask, value,
2788 fast_timeout_us, 0, ®_value);
2789
2790 intel_uncore_forcewake_put__locked(uncore, fw);
2791 spin_unlock_irq(&uncore->lock);
2792
2793 if (ret && slow_timeout_ms)
2794 ret = __wait_for(reg_value = intel_uncore_read_notrace(uncore,
2795 reg),
2796 (reg_value & mask) == value,
2797 slow_timeout_ms * 1000, 10, 1000);
2798
2799 /* just trace the final value */
2800 trace_i915_reg_rw(false, reg, reg_value, sizeof(reg_value), true);
2801
2802 if (out_value)
2803 *out_value = reg_value;
2804
2805 return ret;
2806}
2807
2808bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore)
2809{
2810 bool ret;
2811
2812 if (!uncore->debug)
2813 return false;
2814
2815 spin_lock_irq(&uncore->debug->lock);
2816 ret = check_for_unclaimed_mmio(uncore);
2817 spin_unlock_irq(&uncore->debug->lock);
2818
2819 return ret;
2820}
2821
2822bool
2823intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore)
2824{
2825 bool ret = false;
2826
2827 if (drm_WARN_ON(&uncore->i915->drm, !uncore->debug))
2828 return false;
2829
2830 spin_lock_irq(&uncore->debug->lock);
2831
2832 if (unlikely(uncore->debug->unclaimed_mmio_check <= 0))
2833 goto out;
2834
2835 if (unlikely(check_for_unclaimed_mmio(uncore))) {
2836 if (!uncore->i915->params.mmio_debug) {
2837 drm_dbg(&uncore->i915->drm,
2838 "Unclaimed register detected, "
2839 "enabling oneshot unclaimed register reporting. "
2840 "Please use i915.mmio_debug=N for more information.\n");
2841 uncore->i915->params.mmio_debug++;
2842 }
2843 uncore->debug->unclaimed_mmio_check--;
2844 ret = true;
2845 }
2846
2847out:
2848 spin_unlock_irq(&uncore->debug->lock);
2849
2850 return ret;
2851}
2852
2853/**
2854 * intel_uncore_forcewake_for_reg - which forcewake domains are needed to access
2855 * a register
2856 * @uncore: pointer to struct intel_uncore
2857 * @reg: register in question
2858 * @op: operation bitmask of FW_REG_READ and/or FW_REG_WRITE
2859 *
2860 * Returns a set of forcewake domains required to be taken with for example
2861 * intel_uncore_forcewake_get for the specified register to be accessible in the
2862 * specified mode (read, write or read/write) with raw mmio accessors.
2863 *
2864 * NOTE: On Gen6 and Gen7 write forcewake domain (FORCEWAKE_RENDER) requires the
2865 * callers to do FIFO management on their own or risk losing writes.
2866 */
2867enum forcewake_domains
2868intel_uncore_forcewake_for_reg(struct intel_uncore *uncore,
2869 i915_reg_t reg, unsigned int op)
2870{
2871 enum forcewake_domains fw_domains = 0;
2872
2873 drm_WARN_ON(&uncore->i915->drm, !op);
2874
2875 if (!intel_uncore_has_forcewake(uncore))
2876 return 0;
2877
2878 if (op & FW_REG_READ)
2879 fw_domains = uncore->funcs.read_fw_domains(uncore, reg);
2880
2881 if (op & FW_REG_WRITE)
2882 fw_domains |= uncore->funcs.write_fw_domains(uncore, reg);
2883
2884 drm_WARN_ON(&uncore->i915->drm, fw_domains & ~uncore->fw_domains);
2885
2886 return fw_domains;
2887}
2888
2889#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
2890#include "selftests/mock_uncore.c"
2891#include "selftests/intel_uncore.c"
2892#endif
1/*
2 * Copyright © 2013 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24#include <linux/pm_runtime.h>
25#include <asm/iosf_mbi.h>
26
27#include "i915_drv.h"
28#include "i915_trace.h"
29#include "i915_vgpu.h"
30#include "intel_pm.h"
31
32#define FORCEWAKE_ACK_TIMEOUT_MS 50
33#define GT_FIFO_TIMEOUT_MS 10
34
35#define __raw_posting_read(...) ((void)__raw_uncore_read32(__VA_ARGS__))
36
37void
38intel_uncore_mmio_debug_init_early(struct intel_uncore_mmio_debug *mmio_debug)
39{
40 spin_lock_init(&mmio_debug->lock);
41 mmio_debug->unclaimed_mmio_check = 1;
42}
43
44static void mmio_debug_suspend(struct intel_uncore_mmio_debug *mmio_debug)
45{
46 lockdep_assert_held(&mmio_debug->lock);
47
48 /* Save and disable mmio debugging for the user bypass */
49 if (!mmio_debug->suspend_count++) {
50 mmio_debug->saved_mmio_check = mmio_debug->unclaimed_mmio_check;
51 mmio_debug->unclaimed_mmio_check = 0;
52 }
53}
54
55static void mmio_debug_resume(struct intel_uncore_mmio_debug *mmio_debug)
56{
57 lockdep_assert_held(&mmio_debug->lock);
58
59 if (!--mmio_debug->suspend_count)
60 mmio_debug->unclaimed_mmio_check = mmio_debug->saved_mmio_check;
61}
62
63static const char * const forcewake_domain_names[] = {
64 "render",
65 "blitter",
66 "media",
67 "vdbox0",
68 "vdbox1",
69 "vdbox2",
70 "vdbox3",
71 "vebox0",
72 "vebox1",
73};
74
75const char *
76intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id)
77{
78 BUILD_BUG_ON(ARRAY_SIZE(forcewake_domain_names) != FW_DOMAIN_ID_COUNT);
79
80 if (id >= 0 && id < FW_DOMAIN_ID_COUNT)
81 return forcewake_domain_names[id];
82
83 WARN_ON(id);
84
85 return "unknown";
86}
87
88#define fw_ack(d) readl((d)->reg_ack)
89#define fw_set(d, val) writel(_MASKED_BIT_ENABLE((val)), (d)->reg_set)
90#define fw_clear(d, val) writel(_MASKED_BIT_DISABLE((val)), (d)->reg_set)
91
92static inline void
93fw_domain_reset(const struct intel_uncore_forcewake_domain *d)
94{
95 /*
96 * We don't really know if the powerwell for the forcewake domain we are
97 * trying to reset here does exist at this point (engines could be fused
98 * off in ICL+), so no waiting for acks
99 */
100 /* WaRsClearFWBitsAtReset:bdw,skl */
101 fw_clear(d, 0xffff);
102}
103
104static inline void
105fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d)
106{
107 GEM_BUG_ON(d->uncore->fw_domains_timer & d->mask);
108 d->uncore->fw_domains_timer |= d->mask;
109 d->wake_count++;
110 hrtimer_start_range_ns(&d->timer,
111 NSEC_PER_MSEC,
112 NSEC_PER_MSEC,
113 HRTIMER_MODE_REL);
114}
115
116static inline int
117__wait_for_ack(const struct intel_uncore_forcewake_domain *d,
118 const u32 ack,
119 const u32 value)
120{
121 return wait_for_atomic((fw_ack(d) & ack) == value,
122 FORCEWAKE_ACK_TIMEOUT_MS);
123}
124
125static inline int
126wait_ack_clear(const struct intel_uncore_forcewake_domain *d,
127 const u32 ack)
128{
129 return __wait_for_ack(d, ack, 0);
130}
131
132static inline int
133wait_ack_set(const struct intel_uncore_forcewake_domain *d,
134 const u32 ack)
135{
136 return __wait_for_ack(d, ack, ack);
137}
138
139static inline void
140fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d)
141{
142 if (wait_ack_clear(d, FORCEWAKE_KERNEL)) {
143 DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n",
144 intel_uncore_forcewake_domain_to_str(d->id));
145 add_taint_for_CI(TAINT_WARN); /* CI now unreliable */
146 }
147}
148
149enum ack_type {
150 ACK_CLEAR = 0,
151 ACK_SET
152};
153
154static int
155fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d,
156 const enum ack_type type)
157{
158 const u32 ack_bit = FORCEWAKE_KERNEL;
159 const u32 value = type == ACK_SET ? ack_bit : 0;
160 unsigned int pass;
161 bool ack_detected;
162
163 /*
164 * There is a possibility of driver's wake request colliding
165 * with hardware's own wake requests and that can cause
166 * hardware to not deliver the driver's ack message.
167 *
168 * Use a fallback bit toggle to kick the gpu state machine
169 * in the hope that the original ack will be delivered along with
170 * the fallback ack.
171 *
172 * This workaround is described in HSDES #1604254524 and it's known as:
173 * WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl
174 * although the name is a bit misleading.
175 */
176
177 pass = 1;
178 do {
179 wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK);
180
181 fw_set(d, FORCEWAKE_KERNEL_FALLBACK);
182 /* Give gt some time to relax before the polling frenzy */
183 udelay(10 * pass);
184 wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK);
185
186 ack_detected = (fw_ack(d) & ack_bit) == value;
187
188 fw_clear(d, FORCEWAKE_KERNEL_FALLBACK);
189 } while (!ack_detected && pass++ < 10);
190
191 DRM_DEBUG_DRIVER("%s had to use fallback to %s ack, 0x%x (passes %u)\n",
192 intel_uncore_forcewake_domain_to_str(d->id),
193 type == ACK_SET ? "set" : "clear",
194 fw_ack(d),
195 pass);
196
197 return ack_detected ? 0 : -ETIMEDOUT;
198}
199
200static inline void
201fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d)
202{
203 if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL)))
204 return;
205
206 if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR))
207 fw_domain_wait_ack_clear(d);
208}
209
210static inline void
211fw_domain_get(const struct intel_uncore_forcewake_domain *d)
212{
213 fw_set(d, FORCEWAKE_KERNEL);
214}
215
216static inline void
217fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d)
218{
219 if (wait_ack_set(d, FORCEWAKE_KERNEL)) {
220 DRM_ERROR("%s: timed out waiting for forcewake ack request.\n",
221 intel_uncore_forcewake_domain_to_str(d->id));
222 add_taint_for_CI(TAINT_WARN); /* CI now unreliable */
223 }
224}
225
226static inline void
227fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d)
228{
229 if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL)))
230 return;
231
232 if (fw_domain_wait_ack_with_fallback(d, ACK_SET))
233 fw_domain_wait_ack_set(d);
234}
235
236static inline void
237fw_domain_put(const struct intel_uncore_forcewake_domain *d)
238{
239 fw_clear(d, FORCEWAKE_KERNEL);
240}
241
242static void
243fw_domains_get(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
244{
245 struct intel_uncore_forcewake_domain *d;
246 unsigned int tmp;
247
248 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
249
250 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
251 fw_domain_wait_ack_clear(d);
252 fw_domain_get(d);
253 }
254
255 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
256 fw_domain_wait_ack_set(d);
257
258 uncore->fw_domains_active |= fw_domains;
259}
260
261static void
262fw_domains_get_with_fallback(struct intel_uncore *uncore,
263 enum forcewake_domains fw_domains)
264{
265 struct intel_uncore_forcewake_domain *d;
266 unsigned int tmp;
267
268 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
269
270 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) {
271 fw_domain_wait_ack_clear_fallback(d);
272 fw_domain_get(d);
273 }
274
275 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
276 fw_domain_wait_ack_set_fallback(d);
277
278 uncore->fw_domains_active |= fw_domains;
279}
280
281static void
282fw_domains_put(struct intel_uncore *uncore, enum forcewake_domains fw_domains)
283{
284 struct intel_uncore_forcewake_domain *d;
285 unsigned int tmp;
286
287 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
288
289 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
290 fw_domain_put(d);
291
292 uncore->fw_domains_active &= ~fw_domains;
293}
294
295static void
296fw_domains_reset(struct intel_uncore *uncore,
297 enum forcewake_domains fw_domains)
298{
299 struct intel_uncore_forcewake_domain *d;
300 unsigned int tmp;
301
302 if (!fw_domains)
303 return;
304
305 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
306
307 for_each_fw_domain_masked(d, fw_domains, uncore, tmp)
308 fw_domain_reset(d);
309}
310
311static inline u32 gt_thread_status(struct intel_uncore *uncore)
312{
313 u32 val;
314
315 val = __raw_uncore_read32(uncore, GEN6_GT_THREAD_STATUS_REG);
316 val &= GEN6_GT_THREAD_STATUS_CORE_MASK;
317
318 return val;
319}
320
321static void __gen6_gt_wait_for_thread_c0(struct intel_uncore *uncore)
322{
323 /*
324 * w/a for a sporadic read returning 0 by waiting for the GT
325 * thread to wake up.
326 */
327 WARN_ONCE(wait_for_atomic_us(gt_thread_status(uncore) == 0, 5000),
328 "GT thread status wait timed out\n");
329}
330
331static void fw_domains_get_with_thread_status(struct intel_uncore *uncore,
332 enum forcewake_domains fw_domains)
333{
334 fw_domains_get(uncore, fw_domains);
335
336 /* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */
337 __gen6_gt_wait_for_thread_c0(uncore);
338}
339
340static inline u32 fifo_free_entries(struct intel_uncore *uncore)
341{
342 u32 count = __raw_uncore_read32(uncore, GTFIFOCTL);
343
344 return count & GT_FIFO_FREE_ENTRIES_MASK;
345}
346
347static void __gen6_gt_wait_for_fifo(struct intel_uncore *uncore)
348{
349 u32 n;
350
351 /* On VLV, FIFO will be shared by both SW and HW.
352 * So, we need to read the FREE_ENTRIES everytime */
353 if (IS_VALLEYVIEW(uncore->i915))
354 n = fifo_free_entries(uncore);
355 else
356 n = uncore->fifo_count;
357
358 if (n <= GT_FIFO_NUM_RESERVED_ENTRIES) {
359 if (wait_for_atomic((n = fifo_free_entries(uncore)) >
360 GT_FIFO_NUM_RESERVED_ENTRIES,
361 GT_FIFO_TIMEOUT_MS)) {
362 DRM_DEBUG("GT_FIFO timeout, entries: %u\n", n);
363 return;
364 }
365 }
366
367 uncore->fifo_count = n - 1;
368}
369
370static enum hrtimer_restart
371intel_uncore_fw_release_timer(struct hrtimer *timer)
372{
373 struct intel_uncore_forcewake_domain *domain =
374 container_of(timer, struct intel_uncore_forcewake_domain, timer);
375 struct intel_uncore *uncore = domain->uncore;
376 unsigned long irqflags;
377
378 assert_rpm_device_not_suspended(uncore->rpm);
379
380 if (xchg(&domain->active, false))
381 return HRTIMER_RESTART;
382
383 spin_lock_irqsave(&uncore->lock, irqflags);
384
385 uncore->fw_domains_timer &= ~domain->mask;
386
387 GEM_BUG_ON(!domain->wake_count);
388 if (--domain->wake_count == 0)
389 uncore->funcs.force_wake_put(uncore, domain->mask);
390
391 spin_unlock_irqrestore(&uncore->lock, irqflags);
392
393 return HRTIMER_NORESTART;
394}
395
396/* Note callers must have acquired the PUNIT->PMIC bus, before calling this. */
397static unsigned int
398intel_uncore_forcewake_reset(struct intel_uncore *uncore)
399{
400 unsigned long irqflags;
401 struct intel_uncore_forcewake_domain *domain;
402 int retry_count = 100;
403 enum forcewake_domains fw, active_domains;
404
405 iosf_mbi_assert_punit_acquired();
406
407 /* Hold uncore.lock across reset to prevent any register access
408 * with forcewake not set correctly. Wait until all pending
409 * timers are run before holding.
410 */
411 while (1) {
412 unsigned int tmp;
413
414 active_domains = 0;
415
416 for_each_fw_domain(domain, uncore, tmp) {
417 smp_store_mb(domain->active, false);
418 if (hrtimer_cancel(&domain->timer) == 0)
419 continue;
420
421 intel_uncore_fw_release_timer(&domain->timer);
422 }
423
424 spin_lock_irqsave(&uncore->lock, irqflags);
425
426 for_each_fw_domain(domain, uncore, tmp) {
427 if (hrtimer_active(&domain->timer))
428 active_domains |= domain->mask;
429 }
430
431 if (active_domains == 0)
432 break;
433
434 if (--retry_count == 0) {
435 DRM_ERROR("Timed out waiting for forcewake timers to finish\n");
436 break;
437 }
438
439 spin_unlock_irqrestore(&uncore->lock, irqflags);
440 cond_resched();
441 }
442
443 WARN_ON(active_domains);
444
445 fw = uncore->fw_domains_active;
446 if (fw)
447 uncore->funcs.force_wake_put(uncore, fw);
448
449 fw_domains_reset(uncore, uncore->fw_domains);
450 assert_forcewakes_inactive(uncore);
451
452 spin_unlock_irqrestore(&uncore->lock, irqflags);
453
454 return fw; /* track the lost user forcewake domains */
455}
456
457static bool
458fpga_check_for_unclaimed_mmio(struct intel_uncore *uncore)
459{
460 u32 dbg;
461
462 dbg = __raw_uncore_read32(uncore, FPGA_DBG);
463 if (likely(!(dbg & FPGA_DBG_RM_NOCLAIM)))
464 return false;
465
466 __raw_uncore_write32(uncore, FPGA_DBG, FPGA_DBG_RM_NOCLAIM);
467
468 return true;
469}
470
471static bool
472vlv_check_for_unclaimed_mmio(struct intel_uncore *uncore)
473{
474 u32 cer;
475
476 cer = __raw_uncore_read32(uncore, CLAIM_ER);
477 if (likely(!(cer & (CLAIM_ER_OVERFLOW | CLAIM_ER_CTR_MASK))))
478 return false;
479
480 __raw_uncore_write32(uncore, CLAIM_ER, CLAIM_ER_CLR);
481
482 return true;
483}
484
485static bool
486gen6_check_for_fifo_debug(struct intel_uncore *uncore)
487{
488 u32 fifodbg;
489
490 fifodbg = __raw_uncore_read32(uncore, GTFIFODBG);
491
492 if (unlikely(fifodbg)) {
493 DRM_DEBUG_DRIVER("GTFIFODBG = 0x08%x\n", fifodbg);
494 __raw_uncore_write32(uncore, GTFIFODBG, fifodbg);
495 }
496
497 return fifodbg;
498}
499
500static bool
501check_for_unclaimed_mmio(struct intel_uncore *uncore)
502{
503 bool ret = false;
504
505 lockdep_assert_held(&uncore->debug->lock);
506
507 if (uncore->debug->suspend_count)
508 return false;
509
510 if (intel_uncore_has_fpga_dbg_unclaimed(uncore))
511 ret |= fpga_check_for_unclaimed_mmio(uncore);
512
513 if (intel_uncore_has_dbg_unclaimed(uncore))
514 ret |= vlv_check_for_unclaimed_mmio(uncore);
515
516 if (intel_uncore_has_fifo(uncore))
517 ret |= gen6_check_for_fifo_debug(uncore);
518
519 return ret;
520}
521
522static void forcewake_early_sanitize(struct intel_uncore *uncore,
523 unsigned int restore_forcewake)
524{
525 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
526
527 /* WaDisableShadowRegForCpd:chv */
528 if (IS_CHERRYVIEW(uncore->i915)) {
529 __raw_uncore_write32(uncore, GTFIFOCTL,
530 __raw_uncore_read32(uncore, GTFIFOCTL) |
531 GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL |
532 GT_FIFO_CTL_RC6_POLICY_STALL);
533 }
534
535 iosf_mbi_punit_acquire();
536 intel_uncore_forcewake_reset(uncore);
537 if (restore_forcewake) {
538 spin_lock_irq(&uncore->lock);
539 uncore->funcs.force_wake_get(uncore, restore_forcewake);
540
541 if (intel_uncore_has_fifo(uncore))
542 uncore->fifo_count = fifo_free_entries(uncore);
543 spin_unlock_irq(&uncore->lock);
544 }
545 iosf_mbi_punit_release();
546}
547
548void intel_uncore_suspend(struct intel_uncore *uncore)
549{
550 if (!intel_uncore_has_forcewake(uncore))
551 return;
552
553 iosf_mbi_punit_acquire();
554 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
555 &uncore->pmic_bus_access_nb);
556 uncore->fw_domains_saved = intel_uncore_forcewake_reset(uncore);
557 iosf_mbi_punit_release();
558}
559
560void intel_uncore_resume_early(struct intel_uncore *uncore)
561{
562 unsigned int restore_forcewake;
563
564 if (intel_uncore_unclaimed_mmio(uncore))
565 DRM_DEBUG("unclaimed mmio detected on resume, clearing\n");
566
567 if (!intel_uncore_has_forcewake(uncore))
568 return;
569
570 restore_forcewake = fetch_and_zero(&uncore->fw_domains_saved);
571 forcewake_early_sanitize(uncore, restore_forcewake);
572
573 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
574}
575
576void intel_uncore_runtime_resume(struct intel_uncore *uncore)
577{
578 if (!intel_uncore_has_forcewake(uncore))
579 return;
580
581 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
582}
583
584static void __intel_uncore_forcewake_get(struct intel_uncore *uncore,
585 enum forcewake_domains fw_domains)
586{
587 struct intel_uncore_forcewake_domain *domain;
588 unsigned int tmp;
589
590 fw_domains &= uncore->fw_domains;
591
592 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
593 if (domain->wake_count++) {
594 fw_domains &= ~domain->mask;
595 domain->active = true;
596 }
597 }
598
599 if (fw_domains)
600 uncore->funcs.force_wake_get(uncore, fw_domains);
601}
602
603/**
604 * intel_uncore_forcewake_get - grab forcewake domain references
605 * @uncore: the intel_uncore structure
606 * @fw_domains: forcewake domains to get reference on
607 *
608 * This function can be used get GT's forcewake domain references.
609 * Normal register access will handle the forcewake domains automatically.
610 * However if some sequence requires the GT to not power down a particular
611 * forcewake domains this function should be called at the beginning of the
612 * sequence. And subsequently the reference should be dropped by symmetric
613 * call to intel_unforce_forcewake_put(). Usually caller wants all the domains
614 * to be kept awake so the @fw_domains would be then FORCEWAKE_ALL.
615 */
616void intel_uncore_forcewake_get(struct intel_uncore *uncore,
617 enum forcewake_domains fw_domains)
618{
619 unsigned long irqflags;
620
621 if (!uncore->funcs.force_wake_get)
622 return;
623
624 assert_rpm_wakelock_held(uncore->rpm);
625
626 spin_lock_irqsave(&uncore->lock, irqflags);
627 __intel_uncore_forcewake_get(uncore, fw_domains);
628 spin_unlock_irqrestore(&uncore->lock, irqflags);
629}
630
631/**
632 * intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace
633 * @uncore: the intel_uncore structure
634 *
635 * This function is a wrapper around intel_uncore_forcewake_get() to acquire
636 * the GT powerwell and in the process disable our debugging for the
637 * duration of userspace's bypass.
638 */
639void intel_uncore_forcewake_user_get(struct intel_uncore *uncore)
640{
641 spin_lock_irq(&uncore->lock);
642 if (!uncore->user_forcewake_count++) {
643 intel_uncore_forcewake_get__locked(uncore, FORCEWAKE_ALL);
644 spin_lock(&uncore->debug->lock);
645 mmio_debug_suspend(uncore->debug);
646 spin_unlock(&uncore->debug->lock);
647 }
648 spin_unlock_irq(&uncore->lock);
649}
650
651/**
652 * intel_uncore_forcewake_user_put - release forcewake on behalf of userspace
653 * @uncore: the intel_uncore structure
654 *
655 * This function complements intel_uncore_forcewake_user_get() and releases
656 * the GT powerwell taken on behalf of the userspace bypass.
657 */
658void intel_uncore_forcewake_user_put(struct intel_uncore *uncore)
659{
660 spin_lock_irq(&uncore->lock);
661 if (!--uncore->user_forcewake_count) {
662 spin_lock(&uncore->debug->lock);
663 mmio_debug_resume(uncore->debug);
664
665 if (check_for_unclaimed_mmio(uncore))
666 dev_info(uncore->i915->drm.dev,
667 "Invalid mmio detected during user access\n");
668 spin_unlock(&uncore->debug->lock);
669
670 intel_uncore_forcewake_put__locked(uncore, FORCEWAKE_ALL);
671 }
672 spin_unlock_irq(&uncore->lock);
673}
674
675/**
676 * intel_uncore_forcewake_get__locked - grab forcewake domain references
677 * @uncore: the intel_uncore structure
678 * @fw_domains: forcewake domains to get reference on
679 *
680 * See intel_uncore_forcewake_get(). This variant places the onus
681 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
682 */
683void intel_uncore_forcewake_get__locked(struct intel_uncore *uncore,
684 enum forcewake_domains fw_domains)
685{
686 lockdep_assert_held(&uncore->lock);
687
688 if (!uncore->funcs.force_wake_get)
689 return;
690
691 __intel_uncore_forcewake_get(uncore, fw_domains);
692}
693
694static void __intel_uncore_forcewake_put(struct intel_uncore *uncore,
695 enum forcewake_domains fw_domains)
696{
697 struct intel_uncore_forcewake_domain *domain;
698 unsigned int tmp;
699
700 fw_domains &= uncore->fw_domains;
701
702 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
703 GEM_BUG_ON(!domain->wake_count);
704
705 if (--domain->wake_count) {
706 domain->active = true;
707 continue;
708 }
709
710 fw_domain_arm_timer(domain);
711 }
712}
713
714/**
715 * intel_uncore_forcewake_put - release a forcewake domain reference
716 * @uncore: the intel_uncore structure
717 * @fw_domains: forcewake domains to put references
718 *
719 * This function drops the device-level forcewakes for specified
720 * domains obtained by intel_uncore_forcewake_get().
721 */
722void intel_uncore_forcewake_put(struct intel_uncore *uncore,
723 enum forcewake_domains fw_domains)
724{
725 unsigned long irqflags;
726
727 if (!uncore->funcs.force_wake_put)
728 return;
729
730 spin_lock_irqsave(&uncore->lock, irqflags);
731 __intel_uncore_forcewake_put(uncore, fw_domains);
732 spin_unlock_irqrestore(&uncore->lock, irqflags);
733}
734
735/**
736 * intel_uncore_forcewake_put__locked - grab forcewake domain references
737 * @uncore: the intel_uncore structure
738 * @fw_domains: forcewake domains to get reference on
739 *
740 * See intel_uncore_forcewake_put(). This variant places the onus
741 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock.
742 */
743void intel_uncore_forcewake_put__locked(struct intel_uncore *uncore,
744 enum forcewake_domains fw_domains)
745{
746 lockdep_assert_held(&uncore->lock);
747
748 if (!uncore->funcs.force_wake_put)
749 return;
750
751 __intel_uncore_forcewake_put(uncore, fw_domains);
752}
753
754void assert_forcewakes_inactive(struct intel_uncore *uncore)
755{
756 if (!uncore->funcs.force_wake_get)
757 return;
758
759 WARN(uncore->fw_domains_active,
760 "Expected all fw_domains to be inactive, but %08x are still on\n",
761 uncore->fw_domains_active);
762}
763
764void assert_forcewakes_active(struct intel_uncore *uncore,
765 enum forcewake_domains fw_domains)
766{
767 struct intel_uncore_forcewake_domain *domain;
768 unsigned int tmp;
769
770 if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM))
771 return;
772
773 if (!uncore->funcs.force_wake_get)
774 return;
775
776 spin_lock_irq(&uncore->lock);
777
778 assert_rpm_wakelock_held(uncore->rpm);
779
780 fw_domains &= uncore->fw_domains;
781 WARN(fw_domains & ~uncore->fw_domains_active,
782 "Expected %08x fw_domains to be active, but %08x are off\n",
783 fw_domains, fw_domains & ~uncore->fw_domains_active);
784
785 /*
786 * Check that the caller has an explicit wakeref and we don't mistake
787 * it for the auto wakeref.
788 */
789 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) {
790 unsigned int actual = READ_ONCE(domain->wake_count);
791 unsigned int expect = 1;
792
793 if (uncore->fw_domains_timer & domain->mask)
794 expect++; /* pending automatic release */
795
796 if (WARN(actual < expect,
797 "Expected domain %d to be held awake by caller, count=%d\n",
798 domain->id, actual))
799 break;
800 }
801
802 spin_unlock_irq(&uncore->lock);
803}
804
805/* We give fast paths for the really cool registers */
806#define NEEDS_FORCE_WAKE(reg) ((reg) < 0x40000)
807
808#define GEN11_NEEDS_FORCE_WAKE(reg) \
809 ((reg) < 0x40000 || ((reg) >= 0x1c0000 && (reg) < 0x1dc000))
810
811#define __gen6_reg_read_fw_domains(uncore, offset) \
812({ \
813 enum forcewake_domains __fwd; \
814 if (NEEDS_FORCE_WAKE(offset)) \
815 __fwd = FORCEWAKE_RENDER; \
816 else \
817 __fwd = 0; \
818 __fwd; \
819})
820
821static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry)
822{
823 if (offset < entry->start)
824 return -1;
825 else if (offset > entry->end)
826 return 1;
827 else
828 return 0;
829}
830
831/* Copied and "macroized" from lib/bsearch.c */
832#define BSEARCH(key, base, num, cmp) ({ \
833 unsigned int start__ = 0, end__ = (num); \
834 typeof(base) result__ = NULL; \
835 while (start__ < end__) { \
836 unsigned int mid__ = start__ + (end__ - start__) / 2; \
837 int ret__ = (cmp)((key), (base) + mid__); \
838 if (ret__ < 0) { \
839 end__ = mid__; \
840 } else if (ret__ > 0) { \
841 start__ = mid__ + 1; \
842 } else { \
843 result__ = (base) + mid__; \
844 break; \
845 } \
846 } \
847 result__; \
848})
849
850static enum forcewake_domains
851find_fw_domain(struct intel_uncore *uncore, u32 offset)
852{
853 const struct intel_forcewake_range *entry;
854
855 entry = BSEARCH(offset,
856 uncore->fw_domains_table,
857 uncore->fw_domains_table_entries,
858 fw_range_cmp);
859
860 if (!entry)
861 return 0;
862
863 /*
864 * The list of FW domains depends on the SKU in gen11+ so we
865 * can't determine it statically. We use FORCEWAKE_ALL and
866 * translate it here to the list of available domains.
867 */
868 if (entry->domains == FORCEWAKE_ALL)
869 return uncore->fw_domains;
870
871 WARN(entry->domains & ~uncore->fw_domains,
872 "Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n",
873 entry->domains & ~uncore->fw_domains, offset);
874
875 return entry->domains;
876}
877
878#define GEN_FW_RANGE(s, e, d) \
879 { .start = (s), .end = (e), .domains = (d) }
880
881#define HAS_FWTABLE(dev_priv) \
882 (INTEL_GEN(dev_priv) >= 9 || \
883 IS_CHERRYVIEW(dev_priv) || \
884 IS_VALLEYVIEW(dev_priv))
885
886/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
887static const struct intel_forcewake_range __vlv_fw_ranges[] = {
888 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
889 GEN_FW_RANGE(0x5000, 0x7fff, FORCEWAKE_RENDER),
890 GEN_FW_RANGE(0xb000, 0x11fff, FORCEWAKE_RENDER),
891 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
892 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_MEDIA),
893 GEN_FW_RANGE(0x2e000, 0x2ffff, FORCEWAKE_RENDER),
894 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
895};
896
897#define __fwtable_reg_read_fw_domains(uncore, offset) \
898({ \
899 enum forcewake_domains __fwd = 0; \
900 if (NEEDS_FORCE_WAKE((offset))) \
901 __fwd = find_fw_domain(uncore, offset); \
902 __fwd; \
903})
904
905#define __gen11_fwtable_reg_read_fw_domains(uncore, offset) \
906({ \
907 enum forcewake_domains __fwd = 0; \
908 if (GEN11_NEEDS_FORCE_WAKE((offset))) \
909 __fwd = find_fw_domain(uncore, offset); \
910 __fwd; \
911})
912
913/* *Must* be sorted by offset! See intel_shadow_table_check(). */
914static const i915_reg_t gen8_shadowed_regs[] = {
915 RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
916 GEN6_RPNSWREQ, /* 0xA008 */
917 GEN6_RC_VIDEO_FREQ, /* 0xA00C */
918 RING_TAIL(GEN6_BSD_RING_BASE), /* 0x12000 (base) */
919 RING_TAIL(VEBOX_RING_BASE), /* 0x1a000 (base) */
920 RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
921 /* TODO: Other registers are not yet used */
922};
923
924static const i915_reg_t gen11_shadowed_regs[] = {
925 RING_TAIL(RENDER_RING_BASE), /* 0x2000 (base) */
926 GEN6_RPNSWREQ, /* 0xA008 */
927 GEN6_RC_VIDEO_FREQ, /* 0xA00C */
928 RING_TAIL(BLT_RING_BASE), /* 0x22000 (base) */
929 RING_TAIL(GEN11_BSD_RING_BASE), /* 0x1C0000 (base) */
930 RING_TAIL(GEN11_BSD2_RING_BASE), /* 0x1C4000 (base) */
931 RING_TAIL(GEN11_VEBOX_RING_BASE), /* 0x1C8000 (base) */
932 RING_TAIL(GEN11_BSD3_RING_BASE), /* 0x1D0000 (base) */
933 RING_TAIL(GEN11_BSD4_RING_BASE), /* 0x1D4000 (base) */
934 RING_TAIL(GEN11_VEBOX2_RING_BASE), /* 0x1D8000 (base) */
935 /* TODO: Other registers are not yet used */
936};
937
938static int mmio_reg_cmp(u32 key, const i915_reg_t *reg)
939{
940 u32 offset = i915_mmio_reg_offset(*reg);
941
942 if (key < offset)
943 return -1;
944 else if (key > offset)
945 return 1;
946 else
947 return 0;
948}
949
950#define __is_genX_shadowed(x) \
951static bool is_gen##x##_shadowed(u32 offset) \
952{ \
953 const i915_reg_t *regs = gen##x##_shadowed_regs; \
954 return BSEARCH(offset, regs, ARRAY_SIZE(gen##x##_shadowed_regs), \
955 mmio_reg_cmp); \
956}
957
958__is_genX_shadowed(8)
959__is_genX_shadowed(11)
960
961static enum forcewake_domains
962gen6_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg)
963{
964 return FORCEWAKE_RENDER;
965}
966
967#define __gen8_reg_write_fw_domains(uncore, offset) \
968({ \
969 enum forcewake_domains __fwd; \
970 if (NEEDS_FORCE_WAKE(offset) && !is_gen8_shadowed(offset)) \
971 __fwd = FORCEWAKE_RENDER; \
972 else \
973 __fwd = 0; \
974 __fwd; \
975})
976
977/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
978static const struct intel_forcewake_range __chv_fw_ranges[] = {
979 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER),
980 GEN_FW_RANGE(0x4000, 0x4fff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
981 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
982 GEN_FW_RANGE(0x8000, 0x82ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
983 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
984 GEN_FW_RANGE(0x8500, 0x85ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
985 GEN_FW_RANGE(0x8800, 0x88ff, FORCEWAKE_MEDIA),
986 GEN_FW_RANGE(0x9000, 0xafff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
987 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
988 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
989 GEN_FW_RANGE(0xe000, 0xe7ff, FORCEWAKE_RENDER),
990 GEN_FW_RANGE(0xf000, 0xffff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
991 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
992 GEN_FW_RANGE(0x1a000, 0x1bfff, FORCEWAKE_MEDIA),
993 GEN_FW_RANGE(0x1e800, 0x1e9ff, FORCEWAKE_MEDIA),
994 GEN_FW_RANGE(0x30000, 0x37fff, FORCEWAKE_MEDIA),
995};
996
997#define __fwtable_reg_write_fw_domains(uncore, offset) \
998({ \
999 enum forcewake_domains __fwd = 0; \
1000 if (NEEDS_FORCE_WAKE((offset)) && !is_gen8_shadowed(offset)) \
1001 __fwd = find_fw_domain(uncore, offset); \
1002 __fwd; \
1003})
1004
1005#define __gen11_fwtable_reg_write_fw_domains(uncore, offset) \
1006({ \
1007 enum forcewake_domains __fwd = 0; \
1008 if (GEN11_NEEDS_FORCE_WAKE((offset)) && !is_gen11_shadowed(offset)) \
1009 __fwd = find_fw_domain(uncore, offset); \
1010 __fwd; \
1011})
1012
1013/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
1014static const struct intel_forcewake_range __gen9_fw_ranges[] = {
1015 GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_BLITTER),
1016 GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
1017 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1018 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_BLITTER),
1019 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1020 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_BLITTER),
1021 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1022 GEN_FW_RANGE(0x8000, 0x812f, FORCEWAKE_BLITTER),
1023 GEN_FW_RANGE(0x8130, 0x813f, FORCEWAKE_MEDIA),
1024 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1025 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_BLITTER),
1026 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1027 GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_BLITTER),
1028 GEN_FW_RANGE(0x8800, 0x89ff, FORCEWAKE_MEDIA),
1029 GEN_FW_RANGE(0x8a00, 0x8bff, FORCEWAKE_BLITTER),
1030 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
1031 GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_BLITTER),
1032 GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA),
1033 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_BLITTER),
1034 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
1035 GEN_FW_RANGE(0xb480, 0xcfff, FORCEWAKE_BLITTER),
1036 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA),
1037 GEN_FW_RANGE(0xd800, 0xdfff, FORCEWAKE_BLITTER),
1038 GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
1039 GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_BLITTER),
1040 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA),
1041 GEN_FW_RANGE(0x14000, 0x19fff, FORCEWAKE_BLITTER),
1042 GEN_FW_RANGE(0x1a000, 0x1e9ff, FORCEWAKE_MEDIA),
1043 GEN_FW_RANGE(0x1ea00, 0x243ff, FORCEWAKE_BLITTER),
1044 GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
1045 GEN_FW_RANGE(0x24800, 0x2ffff, FORCEWAKE_BLITTER),
1046 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA),
1047};
1048
1049/* *Must* be sorted by offset ranges! See intel_fw_table_check(). */
1050static const struct intel_forcewake_range __gen11_fw_ranges[] = {
1051 GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_BLITTER),
1052 GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */
1053 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER),
1054 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_BLITTER),
1055 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER),
1056 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_BLITTER),
1057 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER),
1058 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_BLITTER),
1059 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER),
1060 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_BLITTER),
1061 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER),
1062 GEN_FW_RANGE(0x8500, 0x8bff, FORCEWAKE_BLITTER),
1063 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER),
1064 GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_BLITTER),
1065 GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_ALL),
1066 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_BLITTER),
1067 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER),
1068 GEN_FW_RANGE(0xb480, 0xdfff, FORCEWAKE_BLITTER),
1069 GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER),
1070 GEN_FW_RANGE(0xe900, 0x243ff, FORCEWAKE_BLITTER),
1071 GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER),
1072 GEN_FW_RANGE(0x24800, 0x3ffff, FORCEWAKE_BLITTER),
1073 GEN_FW_RANGE(0x40000, 0x1bffff, 0),
1074 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0),
1075 GEN_FW_RANGE(0x1c4000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX1),
1076 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0),
1077 GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_BLITTER),
1078 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2),
1079 GEN_FW_RANGE(0x1d4000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX3),
1080 GEN_FW_RANGE(0x1d8000, 0x1dbfff, FORCEWAKE_MEDIA_VEBOX1)
1081};
1082
1083static void
1084ilk_dummy_write(struct intel_uncore *uncore)
1085{
1086 /* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up
1087 * the chip from rc6 before touching it for real. MI_MODE is masked,
1088 * hence harmless to write 0 into. */
1089 __raw_uncore_write32(uncore, MI_MODE, 0);
1090}
1091
1092static void
1093__unclaimed_reg_debug(struct intel_uncore *uncore,
1094 const i915_reg_t reg,
1095 const bool read,
1096 const bool before)
1097{
1098 if (WARN(check_for_unclaimed_mmio(uncore) && !before,
1099 "Unclaimed %s register 0x%x\n",
1100 read ? "read from" : "write to",
1101 i915_mmio_reg_offset(reg)))
1102 /* Only report the first N failures */
1103 i915_modparams.mmio_debug--;
1104}
1105
1106static inline void
1107unclaimed_reg_debug(struct intel_uncore *uncore,
1108 const i915_reg_t reg,
1109 const bool read,
1110 const bool before)
1111{
1112 if (likely(!i915_modparams.mmio_debug))
1113 return;
1114
1115 /* interrupts are disabled and re-enabled around uncore->lock usage */
1116 lockdep_assert_held(&uncore->lock);
1117
1118 if (before)
1119 spin_lock(&uncore->debug->lock);
1120
1121 __unclaimed_reg_debug(uncore, reg, read, before);
1122
1123 if (!before)
1124 spin_unlock(&uncore->debug->lock);
1125}
1126
1127#define GEN2_READ_HEADER(x) \
1128 u##x val = 0; \
1129 assert_rpm_wakelock_held(uncore->rpm);
1130
1131#define GEN2_READ_FOOTER \
1132 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
1133 return val
1134
1135#define __gen2_read(x) \
1136static u##x \
1137gen2_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1138 GEN2_READ_HEADER(x); \
1139 val = __raw_uncore_read##x(uncore, reg); \
1140 GEN2_READ_FOOTER; \
1141}
1142
1143#define __gen5_read(x) \
1144static u##x \
1145gen5_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1146 GEN2_READ_HEADER(x); \
1147 ilk_dummy_write(uncore); \
1148 val = __raw_uncore_read##x(uncore, reg); \
1149 GEN2_READ_FOOTER; \
1150}
1151
1152__gen5_read(8)
1153__gen5_read(16)
1154__gen5_read(32)
1155__gen5_read(64)
1156__gen2_read(8)
1157__gen2_read(16)
1158__gen2_read(32)
1159__gen2_read(64)
1160
1161#undef __gen5_read
1162#undef __gen2_read
1163
1164#undef GEN2_READ_FOOTER
1165#undef GEN2_READ_HEADER
1166
1167#define GEN6_READ_HEADER(x) \
1168 u32 offset = i915_mmio_reg_offset(reg); \
1169 unsigned long irqflags; \
1170 u##x val = 0; \
1171 assert_rpm_wakelock_held(uncore->rpm); \
1172 spin_lock_irqsave(&uncore->lock, irqflags); \
1173 unclaimed_reg_debug(uncore, reg, true, true)
1174
1175#define GEN6_READ_FOOTER \
1176 unclaimed_reg_debug(uncore, reg, true, false); \
1177 spin_unlock_irqrestore(&uncore->lock, irqflags); \
1178 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \
1179 return val
1180
1181static noinline void ___force_wake_auto(struct intel_uncore *uncore,
1182 enum forcewake_domains fw_domains)
1183{
1184 struct intel_uncore_forcewake_domain *domain;
1185 unsigned int tmp;
1186
1187 GEM_BUG_ON(fw_domains & ~uncore->fw_domains);
1188
1189 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp)
1190 fw_domain_arm_timer(domain);
1191
1192 uncore->funcs.force_wake_get(uncore, fw_domains);
1193}
1194
1195static inline void __force_wake_auto(struct intel_uncore *uncore,
1196 enum forcewake_domains fw_domains)
1197{
1198 GEM_BUG_ON(!fw_domains);
1199
1200 /* Turn on all requested but inactive supported forcewake domains. */
1201 fw_domains &= uncore->fw_domains;
1202 fw_domains &= ~uncore->fw_domains_active;
1203
1204 if (fw_domains)
1205 ___force_wake_auto(uncore, fw_domains);
1206}
1207
1208#define __gen_read(func, x) \
1209static u##x \
1210func##_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \
1211 enum forcewake_domains fw_engine; \
1212 GEN6_READ_HEADER(x); \
1213 fw_engine = __##func##_reg_read_fw_domains(uncore, offset); \
1214 if (fw_engine) \
1215 __force_wake_auto(uncore, fw_engine); \
1216 val = __raw_uncore_read##x(uncore, reg); \
1217 GEN6_READ_FOOTER; \
1218}
1219
1220#define __gen_reg_read_funcs(func) \
1221static enum forcewake_domains \
1222func##_reg_read_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) { \
1223 return __##func##_reg_read_fw_domains(uncore, i915_mmio_reg_offset(reg)); \
1224} \
1225\
1226__gen_read(func, 8) \
1227__gen_read(func, 16) \
1228__gen_read(func, 32) \
1229__gen_read(func, 64)
1230
1231__gen_reg_read_funcs(gen11_fwtable);
1232__gen_reg_read_funcs(fwtable);
1233__gen_reg_read_funcs(gen6);
1234
1235#undef __gen_reg_read_funcs
1236#undef GEN6_READ_FOOTER
1237#undef GEN6_READ_HEADER
1238
1239#define GEN2_WRITE_HEADER \
1240 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
1241 assert_rpm_wakelock_held(uncore->rpm); \
1242
1243#define GEN2_WRITE_FOOTER
1244
1245#define __gen2_write(x) \
1246static void \
1247gen2_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1248 GEN2_WRITE_HEADER; \
1249 __raw_uncore_write##x(uncore, reg, val); \
1250 GEN2_WRITE_FOOTER; \
1251}
1252
1253#define __gen5_write(x) \
1254static void \
1255gen5_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1256 GEN2_WRITE_HEADER; \
1257 ilk_dummy_write(uncore); \
1258 __raw_uncore_write##x(uncore, reg, val); \
1259 GEN2_WRITE_FOOTER; \
1260}
1261
1262__gen5_write(8)
1263__gen5_write(16)
1264__gen5_write(32)
1265__gen2_write(8)
1266__gen2_write(16)
1267__gen2_write(32)
1268
1269#undef __gen5_write
1270#undef __gen2_write
1271
1272#undef GEN2_WRITE_FOOTER
1273#undef GEN2_WRITE_HEADER
1274
1275#define GEN6_WRITE_HEADER \
1276 u32 offset = i915_mmio_reg_offset(reg); \
1277 unsigned long irqflags; \
1278 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \
1279 assert_rpm_wakelock_held(uncore->rpm); \
1280 spin_lock_irqsave(&uncore->lock, irqflags); \
1281 unclaimed_reg_debug(uncore, reg, false, true)
1282
1283#define GEN6_WRITE_FOOTER \
1284 unclaimed_reg_debug(uncore, reg, false, false); \
1285 spin_unlock_irqrestore(&uncore->lock, irqflags)
1286
1287#define __gen6_write(x) \
1288static void \
1289gen6_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1290 GEN6_WRITE_HEADER; \
1291 if (NEEDS_FORCE_WAKE(offset)) \
1292 __gen6_gt_wait_for_fifo(uncore); \
1293 __raw_uncore_write##x(uncore, reg, val); \
1294 GEN6_WRITE_FOOTER; \
1295}
1296__gen6_write(8)
1297__gen6_write(16)
1298__gen6_write(32)
1299
1300#define __gen_write(func, x) \
1301static void \
1302func##_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \
1303 enum forcewake_domains fw_engine; \
1304 GEN6_WRITE_HEADER; \
1305 fw_engine = __##func##_reg_write_fw_domains(uncore, offset); \
1306 if (fw_engine) \
1307 __force_wake_auto(uncore, fw_engine); \
1308 __raw_uncore_write##x(uncore, reg, val); \
1309 GEN6_WRITE_FOOTER; \
1310}
1311
1312#define __gen_reg_write_funcs(func) \
1313static enum forcewake_domains \
1314func##_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) { \
1315 return __##func##_reg_write_fw_domains(uncore, i915_mmio_reg_offset(reg)); \
1316} \
1317\
1318__gen_write(func, 8) \
1319__gen_write(func, 16) \
1320__gen_write(func, 32)
1321
1322__gen_reg_write_funcs(gen11_fwtable);
1323__gen_reg_write_funcs(fwtable);
1324__gen_reg_write_funcs(gen8);
1325
1326#undef __gen_reg_write_funcs
1327#undef GEN6_WRITE_FOOTER
1328#undef GEN6_WRITE_HEADER
1329
1330#define ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, x) \
1331do { \
1332 (uncore)->funcs.mmio_writeb = x##_write8; \
1333 (uncore)->funcs.mmio_writew = x##_write16; \
1334 (uncore)->funcs.mmio_writel = x##_write32; \
1335} while (0)
1336
1337#define ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x) \
1338do { \
1339 (uncore)->funcs.mmio_readb = x##_read8; \
1340 (uncore)->funcs.mmio_readw = x##_read16; \
1341 (uncore)->funcs.mmio_readl = x##_read32; \
1342 (uncore)->funcs.mmio_readq = x##_read64; \
1343} while (0)
1344
1345#define ASSIGN_WRITE_MMIO_VFUNCS(uncore, x) \
1346do { \
1347 ASSIGN_RAW_WRITE_MMIO_VFUNCS((uncore), x); \
1348 (uncore)->funcs.write_fw_domains = x##_reg_write_fw_domains; \
1349} while (0)
1350
1351#define ASSIGN_READ_MMIO_VFUNCS(uncore, x) \
1352do { \
1353 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x); \
1354 (uncore)->funcs.read_fw_domains = x##_reg_read_fw_domains; \
1355} while (0)
1356
1357static int __fw_domain_init(struct intel_uncore *uncore,
1358 enum forcewake_domain_id domain_id,
1359 i915_reg_t reg_set,
1360 i915_reg_t reg_ack)
1361{
1362 struct intel_uncore_forcewake_domain *d;
1363
1364 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
1365 GEM_BUG_ON(uncore->fw_domain[domain_id]);
1366
1367 if (i915_inject_probe_failure(uncore->i915))
1368 return -ENOMEM;
1369
1370 d = kzalloc(sizeof(*d), GFP_KERNEL);
1371 if (!d)
1372 return -ENOMEM;
1373
1374 WARN_ON(!i915_mmio_reg_valid(reg_set));
1375 WARN_ON(!i915_mmio_reg_valid(reg_ack));
1376
1377 d->uncore = uncore;
1378 d->wake_count = 0;
1379 d->reg_set = uncore->regs + i915_mmio_reg_offset(reg_set);
1380 d->reg_ack = uncore->regs + i915_mmio_reg_offset(reg_ack);
1381
1382 d->id = domain_id;
1383
1384 BUILD_BUG_ON(FORCEWAKE_RENDER != (1 << FW_DOMAIN_ID_RENDER));
1385 BUILD_BUG_ON(FORCEWAKE_BLITTER != (1 << FW_DOMAIN_ID_BLITTER));
1386 BUILD_BUG_ON(FORCEWAKE_MEDIA != (1 << FW_DOMAIN_ID_MEDIA));
1387 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX0));
1388 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX1));
1389 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX2));
1390 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX3));
1391 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0));
1392 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1));
1393
1394 d->mask = BIT(domain_id);
1395
1396 hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
1397 d->timer.function = intel_uncore_fw_release_timer;
1398
1399 uncore->fw_domains |= BIT(domain_id);
1400
1401 fw_domain_reset(d);
1402
1403 uncore->fw_domain[domain_id] = d;
1404
1405 return 0;
1406}
1407
1408static void fw_domain_fini(struct intel_uncore *uncore,
1409 enum forcewake_domain_id domain_id)
1410{
1411 struct intel_uncore_forcewake_domain *d;
1412
1413 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT);
1414
1415 d = fetch_and_zero(&uncore->fw_domain[domain_id]);
1416 if (!d)
1417 return;
1418
1419 uncore->fw_domains &= ~BIT(domain_id);
1420 WARN_ON(d->wake_count);
1421 WARN_ON(hrtimer_cancel(&d->timer));
1422 kfree(d);
1423}
1424
1425static void intel_uncore_fw_domains_fini(struct intel_uncore *uncore)
1426{
1427 struct intel_uncore_forcewake_domain *d;
1428 int tmp;
1429
1430 for_each_fw_domain(d, uncore, tmp)
1431 fw_domain_fini(uncore, d->id);
1432}
1433
1434static int intel_uncore_fw_domains_init(struct intel_uncore *uncore)
1435{
1436 struct drm_i915_private *i915 = uncore->i915;
1437 int ret = 0;
1438
1439 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
1440
1441#define fw_domain_init(uncore__, id__, set__, ack__) \
1442 (ret ?: (ret = __fw_domain_init((uncore__), (id__), (set__), (ack__))))
1443
1444 if (INTEL_GEN(i915) >= 11) {
1445 int i;
1446
1447 uncore->funcs.force_wake_get = fw_domains_get_with_fallback;
1448 uncore->funcs.force_wake_put = fw_domains_put;
1449 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1450 FORCEWAKE_RENDER_GEN9,
1451 FORCEWAKE_ACK_RENDER_GEN9);
1452 fw_domain_init(uncore, FW_DOMAIN_ID_BLITTER,
1453 FORCEWAKE_BLITTER_GEN9,
1454 FORCEWAKE_ACK_BLITTER_GEN9);
1455
1456 for (i = 0; i < I915_MAX_VCS; i++) {
1457 if (!HAS_ENGINE(i915, _VCS(i)))
1458 continue;
1459
1460 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VDBOX0 + i,
1461 FORCEWAKE_MEDIA_VDBOX_GEN11(i),
1462 FORCEWAKE_ACK_MEDIA_VDBOX_GEN11(i));
1463 }
1464 for (i = 0; i < I915_MAX_VECS; i++) {
1465 if (!HAS_ENGINE(i915, _VECS(i)))
1466 continue;
1467
1468 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VEBOX0 + i,
1469 FORCEWAKE_MEDIA_VEBOX_GEN11(i),
1470 FORCEWAKE_ACK_MEDIA_VEBOX_GEN11(i));
1471 }
1472 } else if (IS_GEN_RANGE(i915, 9, 10)) {
1473 uncore->funcs.force_wake_get = fw_domains_get_with_fallback;
1474 uncore->funcs.force_wake_put = fw_domains_put;
1475 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1476 FORCEWAKE_RENDER_GEN9,
1477 FORCEWAKE_ACK_RENDER_GEN9);
1478 fw_domain_init(uncore, FW_DOMAIN_ID_BLITTER,
1479 FORCEWAKE_BLITTER_GEN9,
1480 FORCEWAKE_ACK_BLITTER_GEN9);
1481 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
1482 FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9);
1483 } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) {
1484 uncore->funcs.force_wake_get = fw_domains_get;
1485 uncore->funcs.force_wake_put = fw_domains_put;
1486 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1487 FORCEWAKE_VLV, FORCEWAKE_ACK_VLV);
1488 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA,
1489 FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV);
1490 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) {
1491 uncore->funcs.force_wake_get =
1492 fw_domains_get_with_thread_status;
1493 uncore->funcs.force_wake_put = fw_domains_put;
1494 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1495 FORCEWAKE_MT, FORCEWAKE_ACK_HSW);
1496 } else if (IS_IVYBRIDGE(i915)) {
1497 u32 ecobus;
1498
1499 /* IVB configs may use multi-threaded forcewake */
1500
1501 /* A small trick here - if the bios hasn't configured
1502 * MT forcewake, and if the device is in RC6, then
1503 * force_wake_mt_get will not wake the device and the
1504 * ECOBUS read will return zero. Which will be
1505 * (correctly) interpreted by the test below as MT
1506 * forcewake being disabled.
1507 */
1508 uncore->funcs.force_wake_get =
1509 fw_domains_get_with_thread_status;
1510 uncore->funcs.force_wake_put = fw_domains_put;
1511
1512 /* We need to init first for ECOBUS access and then
1513 * determine later if we want to reinit, in case of MT access is
1514 * not working. In this stage we don't know which flavour this
1515 * ivb is, so it is better to reset also the gen6 fw registers
1516 * before the ecobus check.
1517 */
1518
1519 __raw_uncore_write32(uncore, FORCEWAKE, 0);
1520 __raw_posting_read(uncore, ECOBUS);
1521
1522 ret = __fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1523 FORCEWAKE_MT, FORCEWAKE_MT_ACK);
1524 if (ret)
1525 goto out;
1526
1527 spin_lock_irq(&uncore->lock);
1528 fw_domains_get_with_thread_status(uncore, FORCEWAKE_RENDER);
1529 ecobus = __raw_uncore_read32(uncore, ECOBUS);
1530 fw_domains_put(uncore, FORCEWAKE_RENDER);
1531 spin_unlock_irq(&uncore->lock);
1532
1533 if (!(ecobus & FORCEWAKE_MT_ENABLE)) {
1534 DRM_INFO("No MT forcewake available on Ivybridge, this can result in issues\n");
1535 DRM_INFO("when using vblank-synced partial screen updates.\n");
1536 fw_domain_fini(uncore, FW_DOMAIN_ID_RENDER);
1537 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1538 FORCEWAKE, FORCEWAKE_ACK);
1539 }
1540 } else if (IS_GEN(i915, 6)) {
1541 uncore->funcs.force_wake_get =
1542 fw_domains_get_with_thread_status;
1543 uncore->funcs.force_wake_put = fw_domains_put;
1544 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER,
1545 FORCEWAKE, FORCEWAKE_ACK);
1546 }
1547
1548#undef fw_domain_init
1549
1550 /* All future platforms are expected to require complex power gating */
1551 WARN_ON(!ret && uncore->fw_domains == 0);
1552
1553out:
1554 if (ret)
1555 intel_uncore_fw_domains_fini(uncore);
1556
1557 return ret;
1558}
1559
1560#define ASSIGN_FW_DOMAINS_TABLE(uncore, d) \
1561{ \
1562 (uncore)->fw_domains_table = \
1563 (struct intel_forcewake_range *)(d); \
1564 (uncore)->fw_domains_table_entries = ARRAY_SIZE((d)); \
1565}
1566
1567static int i915_pmic_bus_access_notifier(struct notifier_block *nb,
1568 unsigned long action, void *data)
1569{
1570 struct intel_uncore *uncore = container_of(nb,
1571 struct intel_uncore, pmic_bus_access_nb);
1572
1573 switch (action) {
1574 case MBI_PMIC_BUS_ACCESS_BEGIN:
1575 /*
1576 * forcewake all now to make sure that we don't need to do a
1577 * forcewake later which on systems where this notifier gets
1578 * called requires the punit to access to the shared pmic i2c
1579 * bus, which will be busy after this notification, leading to:
1580 * "render: timed out waiting for forcewake ack request."
1581 * errors.
1582 *
1583 * The notifier is unregistered during intel_runtime_suspend(),
1584 * so it's ok to access the HW here without holding a RPM
1585 * wake reference -> disable wakeref asserts for the time of
1586 * the access.
1587 */
1588 disable_rpm_wakeref_asserts(uncore->rpm);
1589 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL);
1590 enable_rpm_wakeref_asserts(uncore->rpm);
1591 break;
1592 case MBI_PMIC_BUS_ACCESS_END:
1593 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL);
1594 break;
1595 }
1596
1597 return NOTIFY_OK;
1598}
1599
1600static int uncore_mmio_setup(struct intel_uncore *uncore)
1601{
1602 struct drm_i915_private *i915 = uncore->i915;
1603 struct pci_dev *pdev = i915->drm.pdev;
1604 int mmio_bar;
1605 int mmio_size;
1606
1607 mmio_bar = IS_GEN(i915, 2) ? 1 : 0;
1608 /*
1609 * Before gen4, the registers and the GTT are behind different BARs.
1610 * However, from gen4 onwards, the registers and the GTT are shared
1611 * in the same BAR, so we want to restrict this ioremap from
1612 * clobbering the GTT which we want ioremap_wc instead. Fortunately,
1613 * the register BAR remains the same size for all the earlier
1614 * generations up to Ironlake.
1615 */
1616 if (INTEL_GEN(i915) < 5)
1617 mmio_size = 512 * 1024;
1618 else
1619 mmio_size = 2 * 1024 * 1024;
1620 uncore->regs = pci_iomap(pdev, mmio_bar, mmio_size);
1621 if (uncore->regs == NULL) {
1622 DRM_ERROR("failed to map registers\n");
1623
1624 return -EIO;
1625 }
1626
1627 return 0;
1628}
1629
1630static void uncore_mmio_cleanup(struct intel_uncore *uncore)
1631{
1632 struct pci_dev *pdev = uncore->i915->drm.pdev;
1633
1634 pci_iounmap(pdev, uncore->regs);
1635}
1636
1637void intel_uncore_init_early(struct intel_uncore *uncore,
1638 struct drm_i915_private *i915)
1639{
1640 spin_lock_init(&uncore->lock);
1641 uncore->i915 = i915;
1642 uncore->rpm = &i915->runtime_pm;
1643 uncore->debug = &i915->mmio_debug;
1644}
1645
1646static void uncore_raw_init(struct intel_uncore *uncore)
1647{
1648 GEM_BUG_ON(intel_uncore_has_forcewake(uncore));
1649
1650 if (IS_GEN(uncore->i915, 5)) {
1651 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen5);
1652 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen5);
1653 } else {
1654 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen2);
1655 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen2);
1656 }
1657}
1658
1659static int uncore_forcewake_init(struct intel_uncore *uncore)
1660{
1661 struct drm_i915_private *i915 = uncore->i915;
1662 int ret;
1663
1664 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore));
1665
1666 ret = intel_uncore_fw_domains_init(uncore);
1667 if (ret)
1668 return ret;
1669 forcewake_early_sanitize(uncore, 0);
1670
1671 if (IS_GEN_RANGE(i915, 6, 7)) {
1672 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6);
1673
1674 if (IS_VALLEYVIEW(i915)) {
1675 ASSIGN_FW_DOMAINS_TABLE(uncore, __vlv_fw_ranges);
1676 ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
1677 } else {
1678 ASSIGN_READ_MMIO_VFUNCS(uncore, gen6);
1679 }
1680 } else if (IS_GEN(i915, 8)) {
1681 if (IS_CHERRYVIEW(i915)) {
1682 ASSIGN_FW_DOMAINS_TABLE(uncore, __chv_fw_ranges);
1683 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
1684 ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
1685 } else {
1686 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen8);
1687 ASSIGN_READ_MMIO_VFUNCS(uncore, gen6);
1688 }
1689 } else if (IS_GEN_RANGE(i915, 9, 10)) {
1690 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen9_fw_ranges);
1691 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable);
1692 ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable);
1693 } else {
1694 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen11_fw_ranges);
1695 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen11_fwtable);
1696 ASSIGN_READ_MMIO_VFUNCS(uncore, gen11_fwtable);
1697 }
1698
1699 uncore->pmic_bus_access_nb.notifier_call = i915_pmic_bus_access_notifier;
1700 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb);
1701
1702 return 0;
1703}
1704
1705int intel_uncore_init_mmio(struct intel_uncore *uncore)
1706{
1707 struct drm_i915_private *i915 = uncore->i915;
1708 int ret;
1709
1710 ret = uncore_mmio_setup(uncore);
1711 if (ret)
1712 return ret;
1713
1714 if (INTEL_GEN(i915) > 5 && !intel_vgpu_active(i915))
1715 uncore->flags |= UNCORE_HAS_FORCEWAKE;
1716
1717 if (!intel_uncore_has_forcewake(uncore)) {
1718 uncore_raw_init(uncore);
1719 } else {
1720 ret = uncore_forcewake_init(uncore);
1721 if (ret)
1722 goto out_mmio_cleanup;
1723 }
1724
1725 /* make sure fw funcs are set if and only if we have fw*/
1726 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.force_wake_get);
1727 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.force_wake_put);
1728 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.read_fw_domains);
1729 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.write_fw_domains);
1730
1731 if (HAS_FPGA_DBG_UNCLAIMED(i915))
1732 uncore->flags |= UNCORE_HAS_FPGA_DBG_UNCLAIMED;
1733
1734 if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915))
1735 uncore->flags |= UNCORE_HAS_DBG_UNCLAIMED;
1736
1737 if (IS_GEN_RANGE(i915, 6, 7))
1738 uncore->flags |= UNCORE_HAS_FIFO;
1739
1740 /* clear out unclaimed reg detection bit */
1741 if (intel_uncore_unclaimed_mmio(uncore))
1742 DRM_DEBUG("unclaimed mmio detected on uncore init, clearing\n");
1743
1744 return 0;
1745
1746out_mmio_cleanup:
1747 uncore_mmio_cleanup(uncore);
1748
1749 return ret;
1750}
1751
1752/*
1753 * We might have detected that some engines are fused off after we initialized
1754 * the forcewake domains. Prune them, to make sure they only reference existing
1755 * engines.
1756 */
1757void intel_uncore_prune_mmio_domains(struct intel_uncore *uncore)
1758{
1759 struct drm_i915_private *i915 = uncore->i915;
1760 enum forcewake_domains fw_domains = uncore->fw_domains;
1761 enum forcewake_domain_id domain_id;
1762 int i;
1763
1764 if (!intel_uncore_has_forcewake(uncore) || INTEL_GEN(i915) < 11)
1765 return;
1766
1767 for (i = 0; i < I915_MAX_VCS; i++) {
1768 domain_id = FW_DOMAIN_ID_MEDIA_VDBOX0 + i;
1769
1770 if (HAS_ENGINE(i915, _VCS(i)))
1771 continue;
1772
1773 if (fw_domains & BIT(domain_id))
1774 fw_domain_fini(uncore, domain_id);
1775 }
1776
1777 for (i = 0; i < I915_MAX_VECS; i++) {
1778 domain_id = FW_DOMAIN_ID_MEDIA_VEBOX0 + i;
1779
1780 if (HAS_ENGINE(i915, _VECS(i)))
1781 continue;
1782
1783 if (fw_domains & BIT(domain_id))
1784 fw_domain_fini(uncore, domain_id);
1785 }
1786}
1787
1788void intel_uncore_fini_mmio(struct intel_uncore *uncore)
1789{
1790 if (intel_uncore_has_forcewake(uncore)) {
1791 iosf_mbi_punit_acquire();
1792 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked(
1793 &uncore->pmic_bus_access_nb);
1794 intel_uncore_forcewake_reset(uncore);
1795 intel_uncore_fw_domains_fini(uncore);
1796 iosf_mbi_punit_release();
1797 }
1798
1799 uncore_mmio_cleanup(uncore);
1800}
1801
1802static const struct reg_whitelist {
1803 i915_reg_t offset_ldw;
1804 i915_reg_t offset_udw;
1805 u16 gen_mask;
1806 u8 size;
1807} reg_read_whitelist[] = { {
1808 .offset_ldw = RING_TIMESTAMP(RENDER_RING_BASE),
1809 .offset_udw = RING_TIMESTAMP_UDW(RENDER_RING_BASE),
1810 .gen_mask = INTEL_GEN_MASK(4, 12),
1811 .size = 8
1812} };
1813
1814int i915_reg_read_ioctl(struct drm_device *dev,
1815 void *data, struct drm_file *file)
1816{
1817 struct drm_i915_private *i915 = to_i915(dev);
1818 struct intel_uncore *uncore = &i915->uncore;
1819 struct drm_i915_reg_read *reg = data;
1820 struct reg_whitelist const *entry;
1821 intel_wakeref_t wakeref;
1822 unsigned int flags;
1823 int remain;
1824 int ret = 0;
1825
1826 entry = reg_read_whitelist;
1827 remain = ARRAY_SIZE(reg_read_whitelist);
1828 while (remain) {
1829 u32 entry_offset = i915_mmio_reg_offset(entry->offset_ldw);
1830
1831 GEM_BUG_ON(!is_power_of_2(entry->size));
1832 GEM_BUG_ON(entry->size > 8);
1833 GEM_BUG_ON(entry_offset & (entry->size - 1));
1834
1835 if (INTEL_INFO(i915)->gen_mask & entry->gen_mask &&
1836 entry_offset == (reg->offset & -entry->size))
1837 break;
1838 entry++;
1839 remain--;
1840 }
1841
1842 if (!remain)
1843 return -EINVAL;
1844
1845 flags = reg->offset & (entry->size - 1);
1846
1847 with_intel_runtime_pm(&i915->runtime_pm, wakeref) {
1848 if (entry->size == 8 && flags == I915_REG_READ_8B_WA)
1849 reg->val = intel_uncore_read64_2x32(uncore,
1850 entry->offset_ldw,
1851 entry->offset_udw);
1852 else if (entry->size == 8 && flags == 0)
1853 reg->val = intel_uncore_read64(uncore,
1854 entry->offset_ldw);
1855 else if (entry->size == 4 && flags == 0)
1856 reg->val = intel_uncore_read(uncore, entry->offset_ldw);
1857 else if (entry->size == 2 && flags == 0)
1858 reg->val = intel_uncore_read16(uncore,
1859 entry->offset_ldw);
1860 else if (entry->size == 1 && flags == 0)
1861 reg->val = intel_uncore_read8(uncore,
1862 entry->offset_ldw);
1863 else
1864 ret = -EINVAL;
1865 }
1866
1867 return ret;
1868}
1869
1870/**
1871 * __intel_wait_for_register_fw - wait until register matches expected state
1872 * @uncore: the struct intel_uncore
1873 * @reg: the register to read
1874 * @mask: mask to apply to register value
1875 * @value: expected value
1876 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
1877 * @slow_timeout_ms: slow timeout in millisecond
1878 * @out_value: optional placeholder to hold registry value
1879 *
1880 * This routine waits until the target register @reg contains the expected
1881 * @value after applying the @mask, i.e. it waits until ::
1882 *
1883 * (I915_READ_FW(reg) & mask) == value
1884 *
1885 * Otherwise, the wait will timeout after @slow_timeout_ms milliseconds.
1886 * For atomic context @slow_timeout_ms must be zero and @fast_timeout_us
1887 * must be not larger than 20,0000 microseconds.
1888 *
1889 * Note that this routine assumes the caller holds forcewake asserted, it is
1890 * not suitable for very long waits. See intel_wait_for_register() if you
1891 * wish to wait without holding forcewake for the duration (i.e. you expect
1892 * the wait to be slow).
1893 *
1894 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
1895 */
1896int __intel_wait_for_register_fw(struct intel_uncore *uncore,
1897 i915_reg_t reg,
1898 u32 mask,
1899 u32 value,
1900 unsigned int fast_timeout_us,
1901 unsigned int slow_timeout_ms,
1902 u32 *out_value)
1903{
1904 u32 uninitialized_var(reg_value);
1905#define done (((reg_value = intel_uncore_read_fw(uncore, reg)) & mask) == value)
1906 int ret;
1907
1908 /* Catch any overuse of this function */
1909 might_sleep_if(slow_timeout_ms);
1910 GEM_BUG_ON(fast_timeout_us > 20000);
1911
1912 ret = -ETIMEDOUT;
1913 if (fast_timeout_us && fast_timeout_us <= 20000)
1914 ret = _wait_for_atomic(done, fast_timeout_us, 0);
1915 if (ret && slow_timeout_ms)
1916 ret = wait_for(done, slow_timeout_ms);
1917
1918 if (out_value)
1919 *out_value = reg_value;
1920
1921 return ret;
1922#undef done
1923}
1924
1925/**
1926 * __intel_wait_for_register - wait until register matches expected state
1927 * @uncore: the struct intel_uncore
1928 * @reg: the register to read
1929 * @mask: mask to apply to register value
1930 * @value: expected value
1931 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait
1932 * @slow_timeout_ms: slow timeout in millisecond
1933 * @out_value: optional placeholder to hold registry value
1934 *
1935 * This routine waits until the target register @reg contains the expected
1936 * @value after applying the @mask, i.e. it waits until ::
1937 *
1938 * (I915_READ(reg) & mask) == value
1939 *
1940 * Otherwise, the wait will timeout after @timeout_ms milliseconds.
1941 *
1942 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT.
1943 */
1944int __intel_wait_for_register(struct intel_uncore *uncore,
1945 i915_reg_t reg,
1946 u32 mask,
1947 u32 value,
1948 unsigned int fast_timeout_us,
1949 unsigned int slow_timeout_ms,
1950 u32 *out_value)
1951{
1952 unsigned fw =
1953 intel_uncore_forcewake_for_reg(uncore, reg, FW_REG_READ);
1954 u32 reg_value;
1955 int ret;
1956
1957 might_sleep_if(slow_timeout_ms);
1958
1959 spin_lock_irq(&uncore->lock);
1960 intel_uncore_forcewake_get__locked(uncore, fw);
1961
1962 ret = __intel_wait_for_register_fw(uncore,
1963 reg, mask, value,
1964 fast_timeout_us, 0, ®_value);
1965
1966 intel_uncore_forcewake_put__locked(uncore, fw);
1967 spin_unlock_irq(&uncore->lock);
1968
1969 if (ret && slow_timeout_ms)
1970 ret = __wait_for(reg_value = intel_uncore_read_notrace(uncore,
1971 reg),
1972 (reg_value & mask) == value,
1973 slow_timeout_ms * 1000, 10, 1000);
1974
1975 /* just trace the final value */
1976 trace_i915_reg_rw(false, reg, reg_value, sizeof(reg_value), true);
1977
1978 if (out_value)
1979 *out_value = reg_value;
1980
1981 return ret;
1982}
1983
1984bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore)
1985{
1986 bool ret;
1987
1988 spin_lock_irq(&uncore->debug->lock);
1989 ret = check_for_unclaimed_mmio(uncore);
1990 spin_unlock_irq(&uncore->debug->lock);
1991
1992 return ret;
1993}
1994
1995bool
1996intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore)
1997{
1998 bool ret = false;
1999
2000 spin_lock_irq(&uncore->debug->lock);
2001
2002 if (unlikely(uncore->debug->unclaimed_mmio_check <= 0))
2003 goto out;
2004
2005 if (unlikely(check_for_unclaimed_mmio(uncore))) {
2006 if (!i915_modparams.mmio_debug) {
2007 DRM_DEBUG("Unclaimed register detected, "
2008 "enabling oneshot unclaimed register reporting. "
2009 "Please use i915.mmio_debug=N for more information.\n");
2010 i915_modparams.mmio_debug++;
2011 }
2012 uncore->debug->unclaimed_mmio_check--;
2013 ret = true;
2014 }
2015
2016out:
2017 spin_unlock_irq(&uncore->debug->lock);
2018
2019 return ret;
2020}
2021
2022/**
2023 * intel_uncore_forcewake_for_reg - which forcewake domains are needed to access
2024 * a register
2025 * @uncore: pointer to struct intel_uncore
2026 * @reg: register in question
2027 * @op: operation bitmask of FW_REG_READ and/or FW_REG_WRITE
2028 *
2029 * Returns a set of forcewake domains required to be taken with for example
2030 * intel_uncore_forcewake_get for the specified register to be accessible in the
2031 * specified mode (read, write or read/write) with raw mmio accessors.
2032 *
2033 * NOTE: On Gen6 and Gen7 write forcewake domain (FORCEWAKE_RENDER) requires the
2034 * callers to do FIFO management on their own or risk losing writes.
2035 */
2036enum forcewake_domains
2037intel_uncore_forcewake_for_reg(struct intel_uncore *uncore,
2038 i915_reg_t reg, unsigned int op)
2039{
2040 enum forcewake_domains fw_domains = 0;
2041
2042 WARN_ON(!op);
2043
2044 if (!intel_uncore_has_forcewake(uncore))
2045 return 0;
2046
2047 if (op & FW_REG_READ)
2048 fw_domains = uncore->funcs.read_fw_domains(uncore, reg);
2049
2050 if (op & FW_REG_WRITE)
2051 fw_domains |= uncore->funcs.write_fw_domains(uncore, reg);
2052
2053 WARN_ON(fw_domains & ~uncore->fw_domains);
2054
2055 return fw_domains;
2056}
2057
2058#if IS_ENABLED(CONFIG_DRM_I915_SELFTEST)
2059#include "selftests/mock_uncore.c"
2060#include "selftests/intel_uncore.c"
2061#endif