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_engine_regs.h" 28 #include "gt/intel_gt_regs.h" 29 30 #include "i915_drv.h" 31 #include "i915_iosf_mbi.h" 32 #include "i915_reg.h" 33 #include "i915_trace.h" 34 #include "i915_vgpu.h" 35 36 #define FORCEWAKE_ACK_TIMEOUT_MS 50 37 #define GT_FIFO_TIMEOUT_MS 10 38 39 #define __raw_posting_read(...) ((void)__raw_uncore_read32(__VA_ARGS__)) 40 41 static void 42 fw_domains_get(struct intel_uncore *uncore, enum forcewake_domains fw_domains) 43 { 44 uncore->fw_get_funcs->force_wake_get(uncore, fw_domains); 45 } 46 47 void 48 intel_uncore_mmio_debug_init_early(struct drm_i915_private *i915) 49 { 50 spin_lock_init(&i915->mmio_debug.lock); 51 i915->mmio_debug.unclaimed_mmio_check = 1; 52 53 i915->uncore.debug = &i915->mmio_debug; 54 } 55 56 static void mmio_debug_suspend(struct intel_uncore *uncore) 57 { 58 if (!uncore->debug) 59 return; 60 61 spin_lock(&uncore->debug->lock); 62 63 /* Save and disable mmio debugging for the user bypass */ 64 if (!uncore->debug->suspend_count++) { 65 uncore->debug->saved_mmio_check = uncore->debug->unclaimed_mmio_check; 66 uncore->debug->unclaimed_mmio_check = 0; 67 } 68 69 spin_unlock(&uncore->debug->lock); 70 } 71 72 static bool check_for_unclaimed_mmio(struct intel_uncore *uncore); 73 74 static void mmio_debug_resume(struct intel_uncore *uncore) 75 { 76 if (!uncore->debug) 77 return; 78 79 spin_lock(&uncore->debug->lock); 80 81 if (!--uncore->debug->suspend_count) 82 uncore->debug->unclaimed_mmio_check = uncore->debug->saved_mmio_check; 83 84 if (check_for_unclaimed_mmio(uncore)) 85 drm_info(&uncore->i915->drm, 86 "Invalid mmio detected during user access\n"); 87 88 spin_unlock(&uncore->debug->lock); 89 } 90 91 static const char * const forcewake_domain_names[] = { 92 "render", 93 "gt", 94 "media", 95 "vdbox0", 96 "vdbox1", 97 "vdbox2", 98 "vdbox3", 99 "vdbox4", 100 "vdbox5", 101 "vdbox6", 102 "vdbox7", 103 "vebox0", 104 "vebox1", 105 "vebox2", 106 "vebox3", 107 "gsc", 108 }; 109 110 const char * 111 intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id) 112 { 113 BUILD_BUG_ON(ARRAY_SIZE(forcewake_domain_names) != FW_DOMAIN_ID_COUNT); 114 115 if (id >= 0 && id < FW_DOMAIN_ID_COUNT) 116 return forcewake_domain_names[id]; 117 118 WARN_ON(id); 119 120 return "unknown"; 121 } 122 123 #define fw_ack(d) readl((d)->reg_ack) 124 #define fw_set(d, val) writel(_MASKED_BIT_ENABLE((val)), (d)->reg_set) 125 #define fw_clear(d, val) writel(_MASKED_BIT_DISABLE((val)), (d)->reg_set) 126 127 static inline void 128 fw_domain_reset(const struct intel_uncore_forcewake_domain *d) 129 { 130 /* 131 * We don't really know if the powerwell for the forcewake domain we are 132 * trying to reset here does exist at this point (engines could be fused 133 * off in ICL+), so no waiting for acks 134 */ 135 /* WaRsClearFWBitsAtReset */ 136 if (GRAPHICS_VER(d->uncore->i915) >= 12) 137 fw_clear(d, 0xefff); 138 else 139 fw_clear(d, 0xffff); 140 } 141 142 static inline void 143 fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d) 144 { 145 GEM_BUG_ON(d->uncore->fw_domains_timer & d->mask); 146 d->uncore->fw_domains_timer |= d->mask; 147 d->wake_count++; 148 hrtimer_start_range_ns(&d->timer, 149 NSEC_PER_MSEC, 150 NSEC_PER_MSEC, 151 HRTIMER_MODE_REL); 152 } 153 154 static inline int 155 __wait_for_ack(const struct intel_uncore_forcewake_domain *d, 156 const u32 ack, 157 const u32 value) 158 { 159 return wait_for_atomic((fw_ack(d) & ack) == value, 160 FORCEWAKE_ACK_TIMEOUT_MS); 161 } 162 163 static inline int 164 wait_ack_clear(const struct intel_uncore_forcewake_domain *d, 165 const u32 ack) 166 { 167 return __wait_for_ack(d, ack, 0); 168 } 169 170 static inline int 171 wait_ack_set(const struct intel_uncore_forcewake_domain *d, 172 const u32 ack) 173 { 174 return __wait_for_ack(d, ack, ack); 175 } 176 177 static inline void 178 fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d) 179 { 180 if (!wait_ack_clear(d, FORCEWAKE_KERNEL)) 181 return; 182 183 if (fw_ack(d) == ~0) 184 drm_err(&d->uncore->i915->drm, 185 "%s: MMIO unreliable (forcewake register returns 0xFFFFFFFF)!\n", 186 intel_uncore_forcewake_domain_to_str(d->id)); 187 else 188 drm_err(&d->uncore->i915->drm, 189 "%s: timed out waiting for forcewake ack to clear.\n", 190 intel_uncore_forcewake_domain_to_str(d->id)); 191 192 add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */ 193 } 194 195 enum ack_type { 196 ACK_CLEAR = 0, 197 ACK_SET 198 }; 199 200 static int 201 fw_domain_wait_ack_with_fallback(const struct intel_uncore_forcewake_domain *d, 202 const enum ack_type type) 203 { 204 const u32 ack_bit = FORCEWAKE_KERNEL; 205 const u32 value = type == ACK_SET ? ack_bit : 0; 206 unsigned int pass; 207 bool ack_detected; 208 209 /* 210 * There is a possibility of driver's wake request colliding 211 * with hardware's own wake requests and that can cause 212 * hardware to not deliver the driver's ack message. 213 * 214 * Use a fallback bit toggle to kick the gpu state machine 215 * in the hope that the original ack will be delivered along with 216 * the fallback ack. 217 * 218 * This workaround is described in HSDES #1604254524 and it's known as: 219 * WaRsForcewakeAddDelayForAck:skl,bxt,kbl,glk,cfl,cnl,icl 220 * although the name is a bit misleading. 221 */ 222 223 pass = 1; 224 do { 225 wait_ack_clear(d, FORCEWAKE_KERNEL_FALLBACK); 226 227 fw_set(d, FORCEWAKE_KERNEL_FALLBACK); 228 /* Give gt some time to relax before the polling frenzy */ 229 udelay(10 * pass); 230 wait_ack_set(d, FORCEWAKE_KERNEL_FALLBACK); 231 232 ack_detected = (fw_ack(d) & ack_bit) == value; 233 234 fw_clear(d, FORCEWAKE_KERNEL_FALLBACK); 235 } while (!ack_detected && pass++ < 10); 236 237 drm_dbg(&d->uncore->i915->drm, 238 "%s had to use fallback to %s ack, 0x%x (passes %u)\n", 239 intel_uncore_forcewake_domain_to_str(d->id), 240 type == ACK_SET ? "set" : "clear", 241 fw_ack(d), 242 pass); 243 244 return ack_detected ? 0 : -ETIMEDOUT; 245 } 246 247 static inline void 248 fw_domain_wait_ack_clear_fallback(const struct intel_uncore_forcewake_domain *d) 249 { 250 if (likely(!wait_ack_clear(d, FORCEWAKE_KERNEL))) 251 return; 252 253 if (fw_domain_wait_ack_with_fallback(d, ACK_CLEAR)) 254 fw_domain_wait_ack_clear(d); 255 } 256 257 static inline void 258 fw_domain_get(const struct intel_uncore_forcewake_domain *d) 259 { 260 fw_set(d, FORCEWAKE_KERNEL); 261 } 262 263 static inline void 264 fw_domain_wait_ack_set(const struct intel_uncore_forcewake_domain *d) 265 { 266 if (wait_ack_set(d, FORCEWAKE_KERNEL)) { 267 drm_err(&d->uncore->i915->drm, 268 "%s: timed out waiting for forcewake ack request.\n", 269 intel_uncore_forcewake_domain_to_str(d->id)); 270 add_taint_for_CI(d->uncore->i915, TAINT_WARN); /* CI now unreliable */ 271 } 272 } 273 274 static inline void 275 fw_domain_wait_ack_set_fallback(const struct intel_uncore_forcewake_domain *d) 276 { 277 if (likely(!wait_ack_set(d, FORCEWAKE_KERNEL))) 278 return; 279 280 if (fw_domain_wait_ack_with_fallback(d, ACK_SET)) 281 fw_domain_wait_ack_set(d); 282 } 283 284 static inline void 285 fw_domain_put(const struct intel_uncore_forcewake_domain *d) 286 { 287 fw_clear(d, FORCEWAKE_KERNEL); 288 } 289 290 static void 291 fw_domains_get_normal(struct intel_uncore *uncore, enum forcewake_domains fw_domains) 292 { 293 struct intel_uncore_forcewake_domain *d; 294 unsigned int tmp; 295 296 GEM_BUG_ON(fw_domains & ~uncore->fw_domains); 297 298 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) { 299 fw_domain_wait_ack_clear(d); 300 fw_domain_get(d); 301 } 302 303 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) 304 fw_domain_wait_ack_set(d); 305 306 uncore->fw_domains_active |= fw_domains; 307 } 308 309 static void 310 fw_domains_get_with_fallback(struct intel_uncore *uncore, 311 enum forcewake_domains fw_domains) 312 { 313 struct intel_uncore_forcewake_domain *d; 314 unsigned int tmp; 315 316 GEM_BUG_ON(fw_domains & ~uncore->fw_domains); 317 318 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) { 319 fw_domain_wait_ack_clear_fallback(d); 320 fw_domain_get(d); 321 } 322 323 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) 324 fw_domain_wait_ack_set_fallback(d); 325 326 uncore->fw_domains_active |= fw_domains; 327 } 328 329 static void 330 fw_domains_put(struct intel_uncore *uncore, enum forcewake_domains fw_domains) 331 { 332 struct intel_uncore_forcewake_domain *d; 333 unsigned int tmp; 334 335 GEM_BUG_ON(fw_domains & ~uncore->fw_domains); 336 337 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) 338 fw_domain_put(d); 339 340 uncore->fw_domains_active &= ~fw_domains; 341 } 342 343 static void 344 fw_domains_reset(struct intel_uncore *uncore, 345 enum forcewake_domains fw_domains) 346 { 347 struct intel_uncore_forcewake_domain *d; 348 unsigned int tmp; 349 350 if (!fw_domains) 351 return; 352 353 GEM_BUG_ON(fw_domains & ~uncore->fw_domains); 354 355 for_each_fw_domain_masked(d, fw_domains, uncore, tmp) 356 fw_domain_reset(d); 357 } 358 359 static inline u32 gt_thread_status(struct intel_uncore *uncore) 360 { 361 u32 val; 362 363 val = __raw_uncore_read32(uncore, GEN6_GT_THREAD_STATUS_REG); 364 val &= GEN6_GT_THREAD_STATUS_CORE_MASK; 365 366 return val; 367 } 368 369 static void __gen6_gt_wait_for_thread_c0(struct intel_uncore *uncore) 370 { 371 /* 372 * w/a for a sporadic read returning 0 by waiting for the GT 373 * thread to wake up. 374 */ 375 drm_WARN_ONCE(&uncore->i915->drm, 376 wait_for_atomic_us(gt_thread_status(uncore) == 0, 5000), 377 "GT thread status wait timed out\n"); 378 } 379 380 static void fw_domains_get_with_thread_status(struct intel_uncore *uncore, 381 enum forcewake_domains fw_domains) 382 { 383 fw_domains_get_normal(uncore, fw_domains); 384 385 /* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */ 386 __gen6_gt_wait_for_thread_c0(uncore); 387 } 388 389 static inline u32 fifo_free_entries(struct intel_uncore *uncore) 390 { 391 u32 count = __raw_uncore_read32(uncore, GTFIFOCTL); 392 393 return count & GT_FIFO_FREE_ENTRIES_MASK; 394 } 395 396 static void __gen6_gt_wait_for_fifo(struct intel_uncore *uncore) 397 { 398 u32 n; 399 400 /* On VLV, FIFO will be shared by both SW and HW. 401 * So, we need to read the FREE_ENTRIES everytime */ 402 if (IS_VALLEYVIEW(uncore->i915)) 403 n = fifo_free_entries(uncore); 404 else 405 n = uncore->fifo_count; 406 407 if (n <= GT_FIFO_NUM_RESERVED_ENTRIES) { 408 if (wait_for_atomic((n = fifo_free_entries(uncore)) > 409 GT_FIFO_NUM_RESERVED_ENTRIES, 410 GT_FIFO_TIMEOUT_MS)) { 411 drm_dbg(&uncore->i915->drm, 412 "GT_FIFO timeout, entries: %u\n", n); 413 return; 414 } 415 } 416 417 uncore->fifo_count = n - 1; 418 } 419 420 static enum hrtimer_restart 421 intel_uncore_fw_release_timer(struct hrtimer *timer) 422 { 423 struct intel_uncore_forcewake_domain *domain = 424 container_of(timer, struct intel_uncore_forcewake_domain, timer); 425 struct intel_uncore *uncore = domain->uncore; 426 unsigned long irqflags; 427 428 assert_rpm_device_not_suspended(uncore->rpm); 429 430 if (xchg(&domain->active, false)) 431 return HRTIMER_RESTART; 432 433 spin_lock_irqsave(&uncore->lock, irqflags); 434 435 uncore->fw_domains_timer &= ~domain->mask; 436 437 GEM_BUG_ON(!domain->wake_count); 438 if (--domain->wake_count == 0) 439 fw_domains_put(uncore, domain->mask); 440 441 spin_unlock_irqrestore(&uncore->lock, irqflags); 442 443 return HRTIMER_NORESTART; 444 } 445 446 /* Note callers must have acquired the PUNIT->PMIC bus, before calling this. */ 447 static unsigned int 448 intel_uncore_forcewake_reset(struct intel_uncore *uncore) 449 { 450 unsigned long irqflags; 451 struct intel_uncore_forcewake_domain *domain; 452 int retry_count = 100; 453 enum forcewake_domains fw, active_domains; 454 455 iosf_mbi_assert_punit_acquired(); 456 457 /* Hold uncore.lock across reset to prevent any register access 458 * with forcewake not set correctly. Wait until all pending 459 * timers are run before holding. 460 */ 461 while (1) { 462 unsigned int tmp; 463 464 active_domains = 0; 465 466 for_each_fw_domain(domain, uncore, tmp) { 467 smp_store_mb(domain->active, false); 468 if (hrtimer_cancel(&domain->timer) == 0) 469 continue; 470 471 intel_uncore_fw_release_timer(&domain->timer); 472 } 473 474 spin_lock_irqsave(&uncore->lock, irqflags); 475 476 for_each_fw_domain(domain, uncore, tmp) { 477 if (hrtimer_active(&domain->timer)) 478 active_domains |= domain->mask; 479 } 480 481 if (active_domains == 0) 482 break; 483 484 if (--retry_count == 0) { 485 drm_err(&uncore->i915->drm, "Timed out waiting for forcewake timers to finish\n"); 486 break; 487 } 488 489 spin_unlock_irqrestore(&uncore->lock, irqflags); 490 cond_resched(); 491 } 492 493 drm_WARN_ON(&uncore->i915->drm, active_domains); 494 495 fw = uncore->fw_domains_active; 496 if (fw) 497 fw_domains_put(uncore, fw); 498 499 fw_domains_reset(uncore, uncore->fw_domains); 500 assert_forcewakes_inactive(uncore); 501 502 spin_unlock_irqrestore(&uncore->lock, irqflags); 503 504 return fw; /* track the lost user forcewake domains */ 505 } 506 507 static bool 508 fpga_check_for_unclaimed_mmio(struct intel_uncore *uncore) 509 { 510 u32 dbg; 511 512 dbg = __raw_uncore_read32(uncore, FPGA_DBG); 513 if (likely(!(dbg & FPGA_DBG_RM_NOCLAIM))) 514 return false; 515 516 /* 517 * Bugs in PCI programming (or failing hardware) can occasionally cause 518 * us to lose access to the MMIO BAR. When this happens, register 519 * reads will come back with 0xFFFFFFFF for every register and things 520 * go bad very quickly. Let's try to detect that special case and at 521 * least try to print a more informative message about what has 522 * happened. 523 * 524 * During normal operation the FPGA_DBG register has several unused 525 * bits that will always read back as 0's so we can use them as canaries 526 * to recognize when MMIO accesses are just busted. 527 */ 528 if (unlikely(dbg == ~0)) 529 drm_err(&uncore->i915->drm, 530 "Lost access to MMIO BAR; all registers now read back as 0xFFFFFFFF!\n"); 531 532 __raw_uncore_write32(uncore, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); 533 534 return true; 535 } 536 537 static bool 538 vlv_check_for_unclaimed_mmio(struct intel_uncore *uncore) 539 { 540 u32 cer; 541 542 cer = __raw_uncore_read32(uncore, CLAIM_ER); 543 if (likely(!(cer & (CLAIM_ER_OVERFLOW | CLAIM_ER_CTR_MASK)))) 544 return false; 545 546 __raw_uncore_write32(uncore, CLAIM_ER, CLAIM_ER_CLR); 547 548 return true; 549 } 550 551 static bool 552 gen6_check_for_fifo_debug(struct intel_uncore *uncore) 553 { 554 u32 fifodbg; 555 556 fifodbg = __raw_uncore_read32(uncore, GTFIFODBG); 557 558 if (unlikely(fifodbg)) { 559 drm_dbg(&uncore->i915->drm, "GTFIFODBG = 0x08%x\n", fifodbg); 560 __raw_uncore_write32(uncore, GTFIFODBG, fifodbg); 561 } 562 563 return fifodbg; 564 } 565 566 static bool 567 check_for_unclaimed_mmio(struct intel_uncore *uncore) 568 { 569 bool ret = false; 570 571 lockdep_assert_held(&uncore->debug->lock); 572 573 if (uncore->debug->suspend_count) 574 return false; 575 576 if (intel_uncore_has_fpga_dbg_unclaimed(uncore)) 577 ret |= fpga_check_for_unclaimed_mmio(uncore); 578 579 if (intel_uncore_has_dbg_unclaimed(uncore)) 580 ret |= vlv_check_for_unclaimed_mmio(uncore); 581 582 if (intel_uncore_has_fifo(uncore)) 583 ret |= gen6_check_for_fifo_debug(uncore); 584 585 return ret; 586 } 587 588 static void forcewake_early_sanitize(struct intel_uncore *uncore, 589 unsigned int restore_forcewake) 590 { 591 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore)); 592 593 /* WaDisableShadowRegForCpd:chv */ 594 if (IS_CHERRYVIEW(uncore->i915)) { 595 __raw_uncore_write32(uncore, GTFIFOCTL, 596 __raw_uncore_read32(uncore, GTFIFOCTL) | 597 GT_FIFO_CTL_BLOCK_ALL_POLICY_STALL | 598 GT_FIFO_CTL_RC6_POLICY_STALL); 599 } 600 601 iosf_mbi_punit_acquire(); 602 intel_uncore_forcewake_reset(uncore); 603 if (restore_forcewake) { 604 spin_lock_irq(&uncore->lock); 605 fw_domains_get(uncore, restore_forcewake); 606 607 if (intel_uncore_has_fifo(uncore)) 608 uncore->fifo_count = fifo_free_entries(uncore); 609 spin_unlock_irq(&uncore->lock); 610 } 611 iosf_mbi_punit_release(); 612 } 613 614 void intel_uncore_suspend(struct intel_uncore *uncore) 615 { 616 if (!intel_uncore_has_forcewake(uncore)) 617 return; 618 619 iosf_mbi_punit_acquire(); 620 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked( 621 &uncore->pmic_bus_access_nb); 622 uncore->fw_domains_saved = intel_uncore_forcewake_reset(uncore); 623 iosf_mbi_punit_release(); 624 } 625 626 void intel_uncore_resume_early(struct intel_uncore *uncore) 627 { 628 unsigned int restore_forcewake; 629 630 if (intel_uncore_unclaimed_mmio(uncore)) 631 drm_dbg(&uncore->i915->drm, "unclaimed mmio detected on resume, clearing\n"); 632 633 if (!intel_uncore_has_forcewake(uncore)) 634 return; 635 636 restore_forcewake = fetch_and_zero(&uncore->fw_domains_saved); 637 forcewake_early_sanitize(uncore, restore_forcewake); 638 639 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb); 640 } 641 642 void intel_uncore_runtime_resume(struct intel_uncore *uncore) 643 { 644 if (!intel_uncore_has_forcewake(uncore)) 645 return; 646 647 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb); 648 } 649 650 static void __intel_uncore_forcewake_get(struct intel_uncore *uncore, 651 enum forcewake_domains fw_domains) 652 { 653 struct intel_uncore_forcewake_domain *domain; 654 unsigned int tmp; 655 656 fw_domains &= uncore->fw_domains; 657 658 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { 659 if (domain->wake_count++) { 660 fw_domains &= ~domain->mask; 661 domain->active = true; 662 } 663 } 664 665 if (fw_domains) 666 fw_domains_get(uncore, fw_domains); 667 } 668 669 /** 670 * intel_uncore_forcewake_get - grab forcewake domain references 671 * @uncore: the intel_uncore structure 672 * @fw_domains: forcewake domains to get reference on 673 * 674 * This function can be used get GT's forcewake domain references. 675 * Normal register access will handle the forcewake domains automatically. 676 * However if some sequence requires the GT to not power down a particular 677 * forcewake domains this function should be called at the beginning of the 678 * sequence. And subsequently the reference should be dropped by symmetric 679 * call to intel_unforce_forcewake_put(). Usually caller wants all the domains 680 * to be kept awake so the @fw_domains would be then FORCEWAKE_ALL. 681 */ 682 void intel_uncore_forcewake_get(struct intel_uncore *uncore, 683 enum forcewake_domains fw_domains) 684 { 685 unsigned long irqflags; 686 687 if (!uncore->fw_get_funcs) 688 return; 689 690 assert_rpm_wakelock_held(uncore->rpm); 691 692 spin_lock_irqsave(&uncore->lock, irqflags); 693 __intel_uncore_forcewake_get(uncore, fw_domains); 694 spin_unlock_irqrestore(&uncore->lock, irqflags); 695 } 696 697 /** 698 * intel_uncore_forcewake_user_get - claim forcewake on behalf of userspace 699 * @uncore: the intel_uncore structure 700 * 701 * This function is a wrapper around intel_uncore_forcewake_get() to acquire 702 * the GT powerwell and in the process disable our debugging for the 703 * duration of userspace's bypass. 704 */ 705 void intel_uncore_forcewake_user_get(struct intel_uncore *uncore) 706 { 707 spin_lock_irq(&uncore->lock); 708 if (!uncore->user_forcewake_count++) { 709 intel_uncore_forcewake_get__locked(uncore, FORCEWAKE_ALL); 710 mmio_debug_suspend(uncore); 711 } 712 spin_unlock_irq(&uncore->lock); 713 } 714 715 /** 716 * intel_uncore_forcewake_user_put - release forcewake on behalf of userspace 717 * @uncore: the intel_uncore structure 718 * 719 * This function complements intel_uncore_forcewake_user_get() and releases 720 * the GT powerwell taken on behalf of the userspace bypass. 721 */ 722 void intel_uncore_forcewake_user_put(struct intel_uncore *uncore) 723 { 724 spin_lock_irq(&uncore->lock); 725 if (!--uncore->user_forcewake_count) { 726 mmio_debug_resume(uncore); 727 intel_uncore_forcewake_put__locked(uncore, FORCEWAKE_ALL); 728 } 729 spin_unlock_irq(&uncore->lock); 730 } 731 732 /** 733 * intel_uncore_forcewake_get__locked - grab forcewake domain references 734 * @uncore: the intel_uncore structure 735 * @fw_domains: forcewake domains to get reference on 736 * 737 * See intel_uncore_forcewake_get(). This variant places the onus 738 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock. 739 */ 740 void intel_uncore_forcewake_get__locked(struct intel_uncore *uncore, 741 enum forcewake_domains fw_domains) 742 { 743 lockdep_assert_held(&uncore->lock); 744 745 if (!uncore->fw_get_funcs) 746 return; 747 748 __intel_uncore_forcewake_get(uncore, fw_domains); 749 } 750 751 static void __intel_uncore_forcewake_put(struct intel_uncore *uncore, 752 enum forcewake_domains fw_domains, 753 bool delayed) 754 { 755 struct intel_uncore_forcewake_domain *domain; 756 unsigned int tmp; 757 758 fw_domains &= uncore->fw_domains; 759 760 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { 761 GEM_BUG_ON(!domain->wake_count); 762 763 if (--domain->wake_count) { 764 domain->active = true; 765 continue; 766 } 767 768 if (delayed && 769 !(domain->uncore->fw_domains_timer & domain->mask)) 770 fw_domain_arm_timer(domain); 771 else 772 fw_domains_put(uncore, domain->mask); 773 } 774 } 775 776 /** 777 * intel_uncore_forcewake_put - release a forcewake domain reference 778 * @uncore: the intel_uncore structure 779 * @fw_domains: forcewake domains to put references 780 * 781 * This function drops the device-level forcewakes for specified 782 * domains obtained by intel_uncore_forcewake_get(). 783 */ 784 void intel_uncore_forcewake_put(struct intel_uncore *uncore, 785 enum forcewake_domains fw_domains) 786 { 787 unsigned long irqflags; 788 789 if (!uncore->fw_get_funcs) 790 return; 791 792 spin_lock_irqsave(&uncore->lock, irqflags); 793 __intel_uncore_forcewake_put(uncore, fw_domains, false); 794 spin_unlock_irqrestore(&uncore->lock, irqflags); 795 } 796 797 void intel_uncore_forcewake_put_delayed(struct intel_uncore *uncore, 798 enum forcewake_domains fw_domains) 799 { 800 unsigned long irqflags; 801 802 if (!uncore->fw_get_funcs) 803 return; 804 805 spin_lock_irqsave(&uncore->lock, irqflags); 806 __intel_uncore_forcewake_put(uncore, fw_domains, true); 807 spin_unlock_irqrestore(&uncore->lock, irqflags); 808 } 809 810 /** 811 * intel_uncore_forcewake_flush - flush the delayed release 812 * @uncore: the intel_uncore structure 813 * @fw_domains: forcewake domains to flush 814 */ 815 void intel_uncore_forcewake_flush(struct intel_uncore *uncore, 816 enum forcewake_domains fw_domains) 817 { 818 struct intel_uncore_forcewake_domain *domain; 819 unsigned int tmp; 820 821 if (!uncore->fw_get_funcs) 822 return; 823 824 fw_domains &= uncore->fw_domains; 825 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { 826 WRITE_ONCE(domain->active, false); 827 if (hrtimer_cancel(&domain->timer)) 828 intel_uncore_fw_release_timer(&domain->timer); 829 } 830 } 831 832 /** 833 * intel_uncore_forcewake_put__locked - release forcewake domain references 834 * @uncore: the intel_uncore structure 835 * @fw_domains: forcewake domains to put references 836 * 837 * See intel_uncore_forcewake_put(). This variant places the onus 838 * on the caller to explicitly handle the dev_priv->uncore.lock spinlock. 839 */ 840 void intel_uncore_forcewake_put__locked(struct intel_uncore *uncore, 841 enum forcewake_domains fw_domains) 842 { 843 lockdep_assert_held(&uncore->lock); 844 845 if (!uncore->fw_get_funcs) 846 return; 847 848 __intel_uncore_forcewake_put(uncore, fw_domains, false); 849 } 850 851 void assert_forcewakes_inactive(struct intel_uncore *uncore) 852 { 853 if (!uncore->fw_get_funcs) 854 return; 855 856 drm_WARN(&uncore->i915->drm, uncore->fw_domains_active, 857 "Expected all fw_domains to be inactive, but %08x are still on\n", 858 uncore->fw_domains_active); 859 } 860 861 void assert_forcewakes_active(struct intel_uncore *uncore, 862 enum forcewake_domains fw_domains) 863 { 864 struct intel_uncore_forcewake_domain *domain; 865 unsigned int tmp; 866 867 if (!IS_ENABLED(CONFIG_DRM_I915_DEBUG_RUNTIME_PM)) 868 return; 869 870 if (!uncore->fw_get_funcs) 871 return; 872 873 spin_lock_irq(&uncore->lock); 874 875 assert_rpm_wakelock_held(uncore->rpm); 876 877 fw_domains &= uncore->fw_domains; 878 drm_WARN(&uncore->i915->drm, fw_domains & ~uncore->fw_domains_active, 879 "Expected %08x fw_domains to be active, but %08x are off\n", 880 fw_domains, fw_domains & ~uncore->fw_domains_active); 881 882 /* 883 * Check that the caller has an explicit wakeref and we don't mistake 884 * it for the auto wakeref. 885 */ 886 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) { 887 unsigned int actual = READ_ONCE(domain->wake_count); 888 unsigned int expect = 1; 889 890 if (uncore->fw_domains_timer & domain->mask) 891 expect++; /* pending automatic release */ 892 893 if (drm_WARN(&uncore->i915->drm, actual < expect, 894 "Expected domain %d to be held awake by caller, count=%d\n", 895 domain->id, actual)) 896 break; 897 } 898 899 spin_unlock_irq(&uncore->lock); 900 } 901 902 /* 903 * We give fast paths for the really cool registers. The second range includes 904 * media domains (and the GSC starting from Xe_LPM+) 905 */ 906 #define NEEDS_FORCE_WAKE(reg) ({ \ 907 u32 __reg = (reg); \ 908 __reg < 0x40000 || __reg >= 0x116000; \ 909 }) 910 911 static int fw_range_cmp(u32 offset, const struct intel_forcewake_range *entry) 912 { 913 if (offset < entry->start) 914 return -1; 915 else if (offset > entry->end) 916 return 1; 917 else 918 return 0; 919 } 920 921 /* Copied and "macroized" from lib/bsearch.c */ 922 #define BSEARCH(key, base, num, cmp) ({ \ 923 unsigned int start__ = 0, end__ = (num); \ 924 typeof(base) result__ = NULL; \ 925 while (start__ < end__) { \ 926 unsigned int mid__ = start__ + (end__ - start__) / 2; \ 927 int ret__ = (cmp)((key), (base) + mid__); \ 928 if (ret__ < 0) { \ 929 end__ = mid__; \ 930 } else if (ret__ > 0) { \ 931 start__ = mid__ + 1; \ 932 } else { \ 933 result__ = (base) + mid__; \ 934 break; \ 935 } \ 936 } \ 937 result__; \ 938 }) 939 940 static enum forcewake_domains 941 find_fw_domain(struct intel_uncore *uncore, u32 offset) 942 { 943 const struct intel_forcewake_range *entry; 944 945 if (IS_GSI_REG(offset)) 946 offset += uncore->gsi_offset; 947 948 entry = BSEARCH(offset, 949 uncore->fw_domains_table, 950 uncore->fw_domains_table_entries, 951 fw_range_cmp); 952 953 if (!entry) 954 return 0; 955 956 /* 957 * The list of FW domains depends on the SKU in gen11+ so we 958 * can't determine it statically. We use FORCEWAKE_ALL and 959 * translate it here to the list of available domains. 960 */ 961 if (entry->domains == FORCEWAKE_ALL) 962 return uncore->fw_domains; 963 964 drm_WARN(&uncore->i915->drm, entry->domains & ~uncore->fw_domains, 965 "Uninitialized forcewake domain(s) 0x%x accessed at 0x%x\n", 966 entry->domains & ~uncore->fw_domains, offset); 967 968 return entry->domains; 969 } 970 971 /* 972 * Shadowed register tables describe special register ranges that i915 is 973 * allowed to write to without acquiring forcewake. If these registers' power 974 * wells are down, the hardware will save values written by i915 to a shadow 975 * copy and automatically transfer them into the real register the next time 976 * the power well is woken up. Shadowing only applies to writes; forcewake 977 * must still be acquired when reading from registers in these ranges. 978 * 979 * The documentation for shadowed registers is somewhat spotty on older 980 * platforms. However missing registers from these lists is non-fatal; it just 981 * means we'll wake up the hardware for some register accesses where we didn't 982 * really need to. 983 * 984 * The ranges listed in these tables must be sorted by offset. 985 * 986 * When adding new tables here, please also add them to 987 * intel_shadow_table_check() in selftests/intel_uncore.c so that they will be 988 * scanned for obvious mistakes or typos by the selftests. 989 */ 990 991 static const struct i915_range gen8_shadowed_regs[] = { 992 { .start = 0x2030, .end = 0x2030 }, 993 { .start = 0xA008, .end = 0xA00C }, 994 { .start = 0x12030, .end = 0x12030 }, 995 { .start = 0x1a030, .end = 0x1a030 }, 996 { .start = 0x22030, .end = 0x22030 }, 997 }; 998 999 static const struct i915_range gen11_shadowed_regs[] = { 1000 { .start = 0x2030, .end = 0x2030 }, 1001 { .start = 0x2550, .end = 0x2550 }, 1002 { .start = 0xA008, .end = 0xA00C }, 1003 { .start = 0x22030, .end = 0x22030 }, 1004 { .start = 0x22230, .end = 0x22230 }, 1005 { .start = 0x22510, .end = 0x22550 }, 1006 { .start = 0x1C0030, .end = 0x1C0030 }, 1007 { .start = 0x1C0230, .end = 0x1C0230 }, 1008 { .start = 0x1C0510, .end = 0x1C0550 }, 1009 { .start = 0x1C4030, .end = 0x1C4030 }, 1010 { .start = 0x1C4230, .end = 0x1C4230 }, 1011 { .start = 0x1C4510, .end = 0x1C4550 }, 1012 { .start = 0x1C8030, .end = 0x1C8030 }, 1013 { .start = 0x1C8230, .end = 0x1C8230 }, 1014 { .start = 0x1C8510, .end = 0x1C8550 }, 1015 { .start = 0x1D0030, .end = 0x1D0030 }, 1016 { .start = 0x1D0230, .end = 0x1D0230 }, 1017 { .start = 0x1D0510, .end = 0x1D0550 }, 1018 { .start = 0x1D4030, .end = 0x1D4030 }, 1019 { .start = 0x1D4230, .end = 0x1D4230 }, 1020 { .start = 0x1D4510, .end = 0x1D4550 }, 1021 { .start = 0x1D8030, .end = 0x1D8030 }, 1022 { .start = 0x1D8230, .end = 0x1D8230 }, 1023 { .start = 0x1D8510, .end = 0x1D8550 }, 1024 }; 1025 1026 static const struct i915_range gen12_shadowed_regs[] = { 1027 { .start = 0x2030, .end = 0x2030 }, 1028 { .start = 0x2510, .end = 0x2550 }, 1029 { .start = 0xA008, .end = 0xA00C }, 1030 { .start = 0xA188, .end = 0xA188 }, 1031 { .start = 0xA278, .end = 0xA278 }, 1032 { .start = 0xA540, .end = 0xA56C }, 1033 { .start = 0xC4C8, .end = 0xC4C8 }, 1034 { .start = 0xC4D4, .end = 0xC4D4 }, 1035 { .start = 0xC600, .end = 0xC600 }, 1036 { .start = 0x22030, .end = 0x22030 }, 1037 { .start = 0x22510, .end = 0x22550 }, 1038 { .start = 0x1C0030, .end = 0x1C0030 }, 1039 { .start = 0x1C0510, .end = 0x1C0550 }, 1040 { .start = 0x1C4030, .end = 0x1C4030 }, 1041 { .start = 0x1C4510, .end = 0x1C4550 }, 1042 { .start = 0x1C8030, .end = 0x1C8030 }, 1043 { .start = 0x1C8510, .end = 0x1C8550 }, 1044 { .start = 0x1D0030, .end = 0x1D0030 }, 1045 { .start = 0x1D0510, .end = 0x1D0550 }, 1046 { .start = 0x1D4030, .end = 0x1D4030 }, 1047 { .start = 0x1D4510, .end = 0x1D4550 }, 1048 { .start = 0x1D8030, .end = 0x1D8030 }, 1049 { .start = 0x1D8510, .end = 0x1D8550 }, 1050 1051 /* 1052 * The rest of these ranges are specific to Xe_HP and beyond, but 1053 * are reserved/unused ranges on earlier gen12 platforms, so they can 1054 * be safely added to the gen12 table. 1055 */ 1056 { .start = 0x1E0030, .end = 0x1E0030 }, 1057 { .start = 0x1E0510, .end = 0x1E0550 }, 1058 { .start = 0x1E4030, .end = 0x1E4030 }, 1059 { .start = 0x1E4510, .end = 0x1E4550 }, 1060 { .start = 0x1E8030, .end = 0x1E8030 }, 1061 { .start = 0x1E8510, .end = 0x1E8550 }, 1062 { .start = 0x1F0030, .end = 0x1F0030 }, 1063 { .start = 0x1F0510, .end = 0x1F0550 }, 1064 { .start = 0x1F4030, .end = 0x1F4030 }, 1065 { .start = 0x1F4510, .end = 0x1F4550 }, 1066 { .start = 0x1F8030, .end = 0x1F8030 }, 1067 { .start = 0x1F8510, .end = 0x1F8550 }, 1068 }; 1069 1070 static const struct i915_range dg2_shadowed_regs[] = { 1071 { .start = 0x2030, .end = 0x2030 }, 1072 { .start = 0x2510, .end = 0x2550 }, 1073 { .start = 0xA008, .end = 0xA00C }, 1074 { .start = 0xA188, .end = 0xA188 }, 1075 { .start = 0xA278, .end = 0xA278 }, 1076 { .start = 0xA540, .end = 0xA56C }, 1077 { .start = 0xC4C8, .end = 0xC4C8 }, 1078 { .start = 0xC4E0, .end = 0xC4E0 }, 1079 { .start = 0xC600, .end = 0xC600 }, 1080 { .start = 0xC658, .end = 0xC658 }, 1081 { .start = 0x22030, .end = 0x22030 }, 1082 { .start = 0x22510, .end = 0x22550 }, 1083 { .start = 0x1C0030, .end = 0x1C0030 }, 1084 { .start = 0x1C0510, .end = 0x1C0550 }, 1085 { .start = 0x1C4030, .end = 0x1C4030 }, 1086 { .start = 0x1C4510, .end = 0x1C4550 }, 1087 { .start = 0x1C8030, .end = 0x1C8030 }, 1088 { .start = 0x1C8510, .end = 0x1C8550 }, 1089 { .start = 0x1D0030, .end = 0x1D0030 }, 1090 { .start = 0x1D0510, .end = 0x1D0550 }, 1091 { .start = 0x1D4030, .end = 0x1D4030 }, 1092 { .start = 0x1D4510, .end = 0x1D4550 }, 1093 { .start = 0x1D8030, .end = 0x1D8030 }, 1094 { .start = 0x1D8510, .end = 0x1D8550 }, 1095 { .start = 0x1E0030, .end = 0x1E0030 }, 1096 { .start = 0x1E0510, .end = 0x1E0550 }, 1097 { .start = 0x1E4030, .end = 0x1E4030 }, 1098 { .start = 0x1E4510, .end = 0x1E4550 }, 1099 { .start = 0x1E8030, .end = 0x1E8030 }, 1100 { .start = 0x1E8510, .end = 0x1E8550 }, 1101 { .start = 0x1F0030, .end = 0x1F0030 }, 1102 { .start = 0x1F0510, .end = 0x1F0550 }, 1103 { .start = 0x1F4030, .end = 0x1F4030 }, 1104 { .start = 0x1F4510, .end = 0x1F4550 }, 1105 { .start = 0x1F8030, .end = 0x1F8030 }, 1106 { .start = 0x1F8510, .end = 0x1F8550 }, 1107 }; 1108 1109 static const struct i915_range pvc_shadowed_regs[] = { 1110 { .start = 0x2030, .end = 0x2030 }, 1111 { .start = 0x2510, .end = 0x2550 }, 1112 { .start = 0xA008, .end = 0xA00C }, 1113 { .start = 0xA188, .end = 0xA188 }, 1114 { .start = 0xA278, .end = 0xA278 }, 1115 { .start = 0xA540, .end = 0xA56C }, 1116 { .start = 0xC4C8, .end = 0xC4C8 }, 1117 { .start = 0xC4E0, .end = 0xC4E0 }, 1118 { .start = 0xC600, .end = 0xC600 }, 1119 { .start = 0xC658, .end = 0xC658 }, 1120 { .start = 0x22030, .end = 0x22030 }, 1121 { .start = 0x22510, .end = 0x22550 }, 1122 { .start = 0x1C0030, .end = 0x1C0030 }, 1123 { .start = 0x1C0510, .end = 0x1C0550 }, 1124 { .start = 0x1C4030, .end = 0x1C4030 }, 1125 { .start = 0x1C4510, .end = 0x1C4550 }, 1126 { .start = 0x1C8030, .end = 0x1C8030 }, 1127 { .start = 0x1C8510, .end = 0x1C8550 }, 1128 { .start = 0x1D0030, .end = 0x1D0030 }, 1129 { .start = 0x1D0510, .end = 0x1D0550 }, 1130 { .start = 0x1D4030, .end = 0x1D4030 }, 1131 { .start = 0x1D4510, .end = 0x1D4550 }, 1132 { .start = 0x1D8030, .end = 0x1D8030 }, 1133 { .start = 0x1D8510, .end = 0x1D8550 }, 1134 { .start = 0x1E0030, .end = 0x1E0030 }, 1135 { .start = 0x1E0510, .end = 0x1E0550 }, 1136 { .start = 0x1E4030, .end = 0x1E4030 }, 1137 { .start = 0x1E4510, .end = 0x1E4550 }, 1138 { .start = 0x1E8030, .end = 0x1E8030 }, 1139 { .start = 0x1E8510, .end = 0x1E8550 }, 1140 { .start = 0x1F0030, .end = 0x1F0030 }, 1141 { .start = 0x1F0510, .end = 0x1F0550 }, 1142 { .start = 0x1F4030, .end = 0x1F4030 }, 1143 { .start = 0x1F4510, .end = 0x1F4550 }, 1144 { .start = 0x1F8030, .end = 0x1F8030 }, 1145 { .start = 0x1F8510, .end = 0x1F8550 }, 1146 }; 1147 1148 static const struct i915_range mtl_shadowed_regs[] = { 1149 { .start = 0x2030, .end = 0x2030 }, 1150 { .start = 0x2510, .end = 0x2550 }, 1151 { .start = 0xA008, .end = 0xA00C }, 1152 { .start = 0xA188, .end = 0xA188 }, 1153 { .start = 0xA278, .end = 0xA278 }, 1154 { .start = 0xA540, .end = 0xA56C }, 1155 { .start = 0xC050, .end = 0xC050 }, 1156 { .start = 0xC340, .end = 0xC340 }, 1157 { .start = 0xC4C8, .end = 0xC4C8 }, 1158 { .start = 0xC4E0, .end = 0xC4E0 }, 1159 { .start = 0xC600, .end = 0xC600 }, 1160 { .start = 0xC658, .end = 0xC658 }, 1161 { .start = 0xCFD4, .end = 0xCFDC }, 1162 { .start = 0x22030, .end = 0x22030 }, 1163 { .start = 0x22510, .end = 0x22550 }, 1164 }; 1165 1166 static const struct i915_range xelpmp_shadowed_regs[] = { 1167 { .start = 0x1C0030, .end = 0x1C0030 }, 1168 { .start = 0x1C0510, .end = 0x1C0550 }, 1169 { .start = 0x1C8030, .end = 0x1C8030 }, 1170 { .start = 0x1C8510, .end = 0x1C8550 }, 1171 { .start = 0x1D0030, .end = 0x1D0030 }, 1172 { .start = 0x1D0510, .end = 0x1D0550 }, 1173 { .start = 0x38A008, .end = 0x38A00C }, 1174 { .start = 0x38A188, .end = 0x38A188 }, 1175 { .start = 0x38A278, .end = 0x38A278 }, 1176 { .start = 0x38A540, .end = 0x38A56C }, 1177 { .start = 0x38A618, .end = 0x38A618 }, 1178 { .start = 0x38C050, .end = 0x38C050 }, 1179 { .start = 0x38C340, .end = 0x38C340 }, 1180 { .start = 0x38C4C8, .end = 0x38C4C8 }, 1181 { .start = 0x38C4E0, .end = 0x38C4E4 }, 1182 { .start = 0x38C600, .end = 0x38C600 }, 1183 { .start = 0x38C658, .end = 0x38C658 }, 1184 { .start = 0x38CFD4, .end = 0x38CFDC }, 1185 }; 1186 1187 static int mmio_range_cmp(u32 key, const struct i915_range *range) 1188 { 1189 if (key < range->start) 1190 return -1; 1191 else if (key > range->end) 1192 return 1; 1193 else 1194 return 0; 1195 } 1196 1197 static bool is_shadowed(struct intel_uncore *uncore, u32 offset) 1198 { 1199 if (drm_WARN_ON(&uncore->i915->drm, !uncore->shadowed_reg_table)) 1200 return false; 1201 1202 if (IS_GSI_REG(offset)) 1203 offset += uncore->gsi_offset; 1204 1205 return BSEARCH(offset, 1206 uncore->shadowed_reg_table, 1207 uncore->shadowed_reg_table_entries, 1208 mmio_range_cmp); 1209 } 1210 1211 static enum forcewake_domains 1212 gen6_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) 1213 { 1214 return FORCEWAKE_RENDER; 1215 } 1216 1217 #define __fwtable_reg_read_fw_domains(uncore, offset) \ 1218 ({ \ 1219 enum forcewake_domains __fwd = 0; \ 1220 if (NEEDS_FORCE_WAKE((offset))) \ 1221 __fwd = find_fw_domain(uncore, offset); \ 1222 __fwd; \ 1223 }) 1224 1225 #define __fwtable_reg_write_fw_domains(uncore, offset) \ 1226 ({ \ 1227 enum forcewake_domains __fwd = 0; \ 1228 const u32 __offset = (offset); \ 1229 if (NEEDS_FORCE_WAKE((__offset)) && !is_shadowed(uncore, __offset)) \ 1230 __fwd = find_fw_domain(uncore, __offset); \ 1231 __fwd; \ 1232 }) 1233 1234 #define GEN_FW_RANGE(s, e, d) \ 1235 { .start = (s), .end = (e), .domains = (d) } 1236 1237 /* 1238 * All platforms' forcewake tables below must be sorted by offset ranges. 1239 * Furthermore, new forcewake tables added should be "watertight" and have 1240 * no gaps between ranges. 1241 * 1242 * When there are multiple consecutive ranges listed in the bspec with 1243 * the same forcewake domain, it is customary to combine them into a single 1244 * row in the tables below to keep the tables small and lookups fast. 1245 * Likewise, reserved/unused ranges may be combined with the preceding and/or 1246 * following ranges since the driver will never be making MMIO accesses in 1247 * those ranges. 1248 * 1249 * For example, if the bspec were to list: 1250 * 1251 * ... 1252 * 0x1000 - 0x1fff: GT 1253 * 0x2000 - 0x2cff: GT 1254 * 0x2d00 - 0x2fff: unused/reserved 1255 * 0x3000 - 0xffff: GT 1256 * ... 1257 * 1258 * these could all be represented by a single line in the code: 1259 * 1260 * GEN_FW_RANGE(0x1000, 0xffff, FORCEWAKE_GT) 1261 * 1262 * When adding new forcewake tables here, please also add them to 1263 * intel_uncore_mock_selftests in selftests/intel_uncore.c so that they will be 1264 * scanned for obvious mistakes or typos by the selftests. 1265 */ 1266 1267 static const struct intel_forcewake_range __gen6_fw_ranges[] = { 1268 GEN_FW_RANGE(0x0, 0x3ffff, FORCEWAKE_RENDER), 1269 }; 1270 1271 static const struct intel_forcewake_range __vlv_fw_ranges[] = { 1272 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER), 1273 GEN_FW_RANGE(0x5000, 0x7fff, FORCEWAKE_RENDER), 1274 GEN_FW_RANGE(0xb000, 0x11fff, FORCEWAKE_RENDER), 1275 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA), 1276 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_MEDIA), 1277 GEN_FW_RANGE(0x2e000, 0x2ffff, FORCEWAKE_RENDER), 1278 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA), 1279 }; 1280 1281 static const struct intel_forcewake_range __chv_fw_ranges[] = { 1282 GEN_FW_RANGE(0x2000, 0x3fff, FORCEWAKE_RENDER), 1283 GEN_FW_RANGE(0x4000, 0x4fff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1284 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), 1285 GEN_FW_RANGE(0x8000, 0x82ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1286 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER), 1287 GEN_FW_RANGE(0x8500, 0x85ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1288 GEN_FW_RANGE(0x8800, 0x88ff, FORCEWAKE_MEDIA), 1289 GEN_FW_RANGE(0x9000, 0xafff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1290 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER), 1291 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA), 1292 GEN_FW_RANGE(0xe000, 0xe7ff, FORCEWAKE_RENDER), 1293 GEN_FW_RANGE(0xf000, 0xffff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1294 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA), 1295 GEN_FW_RANGE(0x1a000, 0x1bfff, FORCEWAKE_MEDIA), 1296 GEN_FW_RANGE(0x1e800, 0x1e9ff, FORCEWAKE_MEDIA), 1297 GEN_FW_RANGE(0x30000, 0x37fff, FORCEWAKE_MEDIA), 1298 }; 1299 1300 static const struct intel_forcewake_range __gen9_fw_ranges[] = { 1301 GEN_FW_RANGE(0x0, 0xaff, FORCEWAKE_GT), 1302 GEN_FW_RANGE(0xb00, 0x1fff, 0), /* uncore range */ 1303 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), 1304 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT), 1305 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER), 1306 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), 1307 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), 1308 GEN_FW_RANGE(0x8000, 0x812f, FORCEWAKE_GT), 1309 GEN_FW_RANGE(0x8130, 0x813f, FORCEWAKE_MEDIA), 1310 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER), 1311 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT), 1312 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER), 1313 GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT), 1314 GEN_FW_RANGE(0x8800, 0x89ff, FORCEWAKE_MEDIA), 1315 GEN_FW_RANGE(0x8a00, 0x8bff, FORCEWAKE_GT), 1316 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER), 1317 GEN_FW_RANGE(0x8d00, 0x93ff, FORCEWAKE_GT), 1318 GEN_FW_RANGE(0x9400, 0x97ff, FORCEWAKE_RENDER | FORCEWAKE_MEDIA), 1319 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT), 1320 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER), 1321 GEN_FW_RANGE(0xb480, 0xcfff, FORCEWAKE_GT), 1322 GEN_FW_RANGE(0xd000, 0xd7ff, FORCEWAKE_MEDIA), 1323 GEN_FW_RANGE(0xd800, 0xdfff, FORCEWAKE_GT), 1324 GEN_FW_RANGE(0xe000, 0xe8ff, FORCEWAKE_RENDER), 1325 GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_GT), 1326 GEN_FW_RANGE(0x12000, 0x13fff, FORCEWAKE_MEDIA), 1327 GEN_FW_RANGE(0x14000, 0x19fff, FORCEWAKE_GT), 1328 GEN_FW_RANGE(0x1a000, 0x1e9ff, FORCEWAKE_MEDIA), 1329 GEN_FW_RANGE(0x1ea00, 0x243ff, FORCEWAKE_GT), 1330 GEN_FW_RANGE(0x24400, 0x247ff, FORCEWAKE_RENDER), 1331 GEN_FW_RANGE(0x24800, 0x2ffff, FORCEWAKE_GT), 1332 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_MEDIA), 1333 }; 1334 1335 static const struct intel_forcewake_range __gen11_fw_ranges[] = { 1336 GEN_FW_RANGE(0x0, 0x1fff, 0), /* uncore range */ 1337 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), 1338 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT), 1339 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER), 1340 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), 1341 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), 1342 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT), 1343 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER), 1344 GEN_FW_RANGE(0x8160, 0x82ff, FORCEWAKE_GT), 1345 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER), 1346 GEN_FW_RANGE(0x8500, 0x87ff, FORCEWAKE_GT), 1347 GEN_FW_RANGE(0x8800, 0x8bff, 0), 1348 GEN_FW_RANGE(0x8c00, 0x8cff, FORCEWAKE_RENDER), 1349 GEN_FW_RANGE(0x8d00, 0x94cf, FORCEWAKE_GT), 1350 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER), 1351 GEN_FW_RANGE(0x9560, 0x95ff, 0), 1352 GEN_FW_RANGE(0x9600, 0xafff, FORCEWAKE_GT), 1353 GEN_FW_RANGE(0xb000, 0xb47f, FORCEWAKE_RENDER), 1354 GEN_FW_RANGE(0xb480, 0xdeff, FORCEWAKE_GT), 1355 GEN_FW_RANGE(0xdf00, 0xe8ff, FORCEWAKE_RENDER), 1356 GEN_FW_RANGE(0xe900, 0x16dff, FORCEWAKE_GT), 1357 GEN_FW_RANGE(0x16e00, 0x19fff, FORCEWAKE_RENDER), 1358 GEN_FW_RANGE(0x1a000, 0x23fff, FORCEWAKE_GT), 1359 GEN_FW_RANGE(0x24000, 0x2407f, 0), 1360 GEN_FW_RANGE(0x24080, 0x2417f, FORCEWAKE_GT), 1361 GEN_FW_RANGE(0x24180, 0x242ff, FORCEWAKE_RENDER), 1362 GEN_FW_RANGE(0x24300, 0x243ff, FORCEWAKE_GT), 1363 GEN_FW_RANGE(0x24400, 0x24fff, FORCEWAKE_RENDER), 1364 GEN_FW_RANGE(0x25000, 0x3ffff, FORCEWAKE_GT), 1365 GEN_FW_RANGE(0x40000, 0x1bffff, 0), 1366 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), 1367 GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0), 1368 GEN_FW_RANGE(0x1c8000, 0x1cffff, FORCEWAKE_MEDIA_VEBOX0), 1369 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), 1370 GEN_FW_RANGE(0x1d4000, 0x1dbfff, 0) 1371 }; 1372 1373 static const struct intel_forcewake_range __gen12_fw_ranges[] = { 1374 GEN_FW_RANGE(0x0, 0x1fff, 0), /* 1375 0x0 - 0xaff: reserved 1376 0xb00 - 0x1fff: always on */ 1377 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), 1378 GEN_FW_RANGE(0x2700, 0x27ff, FORCEWAKE_GT), 1379 GEN_FW_RANGE(0x2800, 0x2aff, FORCEWAKE_RENDER), 1380 GEN_FW_RANGE(0x2b00, 0x2fff, FORCEWAKE_GT), 1381 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER), 1382 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), /* 1383 0x4000 - 0x48ff: gt 1384 0x4900 - 0x51ff: reserved */ 1385 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), /* 1386 0x5200 - 0x53ff: render 1387 0x5400 - 0x54ff: reserved 1388 0x5500 - 0x7fff: render */ 1389 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT), 1390 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER), 1391 GEN_FW_RANGE(0x8160, 0x81ff, 0), /* 1392 0x8160 - 0x817f: reserved 1393 0x8180 - 0x81ff: always on */ 1394 GEN_FW_RANGE(0x8200, 0x82ff, FORCEWAKE_GT), 1395 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER), 1396 GEN_FW_RANGE(0x8500, 0x94cf, FORCEWAKE_GT), /* 1397 0x8500 - 0x87ff: gt 1398 0x8800 - 0x8fff: reserved 1399 0x9000 - 0x947f: gt 1400 0x9480 - 0x94cf: reserved */ 1401 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER), 1402 GEN_FW_RANGE(0x9560, 0x97ff, 0), /* 1403 0x9560 - 0x95ff: always on 1404 0x9600 - 0x97ff: reserved */ 1405 GEN_FW_RANGE(0x9800, 0xafff, FORCEWAKE_GT), 1406 GEN_FW_RANGE(0xb000, 0xb3ff, FORCEWAKE_RENDER), 1407 GEN_FW_RANGE(0xb400, 0xcfff, FORCEWAKE_GT), /* 1408 0xb400 - 0xbf7f: gt 1409 0xb480 - 0xbfff: reserved 1410 0xc000 - 0xcfff: gt */ 1411 GEN_FW_RANGE(0xd000, 0xd7ff, 0), 1412 GEN_FW_RANGE(0xd800, 0xd8ff, FORCEWAKE_RENDER), 1413 GEN_FW_RANGE(0xd900, 0xdbff, FORCEWAKE_GT), 1414 GEN_FW_RANGE(0xdc00, 0xefff, FORCEWAKE_RENDER), /* 1415 0xdc00 - 0xddff: render 1416 0xde00 - 0xde7f: reserved 1417 0xde80 - 0xe8ff: render 1418 0xe900 - 0xefff: reserved */ 1419 GEN_FW_RANGE(0xf000, 0x147ff, FORCEWAKE_GT), /* 1420 0xf000 - 0xffff: gt 1421 0x10000 - 0x147ff: reserved */ 1422 GEN_FW_RANGE(0x14800, 0x1ffff, FORCEWAKE_RENDER), /* 1423 0x14800 - 0x14fff: render 1424 0x15000 - 0x16dff: reserved 1425 0x16e00 - 0x1bfff: render 1426 0x1c000 - 0x1ffff: reserved */ 1427 GEN_FW_RANGE(0x20000, 0x20fff, FORCEWAKE_MEDIA_VDBOX0), 1428 GEN_FW_RANGE(0x21000, 0x21fff, FORCEWAKE_MEDIA_VDBOX2), 1429 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT), 1430 GEN_FW_RANGE(0x24000, 0x2417f, 0), /* 1431 0x24000 - 0x2407f: always on 1432 0x24080 - 0x2417f: reserved */ 1433 GEN_FW_RANGE(0x24180, 0x249ff, FORCEWAKE_GT), /* 1434 0x24180 - 0x241ff: gt 1435 0x24200 - 0x249ff: reserved */ 1436 GEN_FW_RANGE(0x24a00, 0x251ff, FORCEWAKE_RENDER), /* 1437 0x24a00 - 0x24a7f: render 1438 0x24a80 - 0x251ff: reserved */ 1439 GEN_FW_RANGE(0x25200, 0x255ff, FORCEWAKE_GT), /* 1440 0x25200 - 0x252ff: gt 1441 0x25300 - 0x255ff: reserved */ 1442 GEN_FW_RANGE(0x25600, 0x2567f, FORCEWAKE_MEDIA_VDBOX0), 1443 GEN_FW_RANGE(0x25680, 0x259ff, FORCEWAKE_MEDIA_VDBOX2), /* 1444 0x25680 - 0x256ff: VD2 1445 0x25700 - 0x259ff: reserved */ 1446 GEN_FW_RANGE(0x25a00, 0x25a7f, FORCEWAKE_MEDIA_VDBOX0), 1447 GEN_FW_RANGE(0x25a80, 0x2ffff, FORCEWAKE_MEDIA_VDBOX2), /* 1448 0x25a80 - 0x25aff: VD2 1449 0x25b00 - 0x2ffff: reserved */ 1450 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT), 1451 GEN_FW_RANGE(0x40000, 0x1bffff, 0), 1452 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /* 1453 0x1c0000 - 0x1c2bff: VD0 1454 0x1c2c00 - 0x1c2cff: reserved 1455 0x1c2d00 - 0x1c2dff: VD0 1456 0x1c2e00 - 0x1c3eff: reserved 1457 0x1c3f00 - 0x1c3fff: VD0 */ 1458 GEN_FW_RANGE(0x1c4000, 0x1c7fff, 0), 1459 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /* 1460 0x1c8000 - 0x1ca0ff: VE0 1461 0x1ca100 - 0x1cbeff: reserved 1462 0x1cbf00 - 0x1cbfff: VE0 */ 1463 GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /* 1464 0x1cc000 - 0x1ccfff: VD0 1465 0x1cd000 - 0x1cffff: reserved */ 1466 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /* 1467 0x1d0000 - 0x1d2bff: VD2 1468 0x1d2c00 - 0x1d2cff: reserved 1469 0x1d2d00 - 0x1d2dff: VD2 1470 0x1d2e00 - 0x1d3eff: reserved 1471 0x1d3f00 - 0x1d3fff: VD2 */ 1472 }; 1473 1474 /* 1475 * Graphics IP version 12.55 brings a slight change to the 0xd800 range, 1476 * switching it from the GT domain to the render domain. 1477 */ 1478 #define XEHP_FWRANGES(FW_RANGE_D800) \ 1479 GEN_FW_RANGE(0x0, 0x1fff, 0), /* \ 1480 0x0 - 0xaff: reserved \ 1481 0xb00 - 0x1fff: always on */ \ 1482 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), \ 1483 GEN_FW_RANGE(0x2700, 0x4aff, FORCEWAKE_GT), \ 1484 GEN_FW_RANGE(0x4b00, 0x51ff, 0), /* \ 1485 0x4b00 - 0x4fff: reserved \ 1486 0x5000 - 0x51ff: always on */ \ 1487 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), \ 1488 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT), \ 1489 GEN_FW_RANGE(0x8140, 0x815f, FORCEWAKE_RENDER), \ 1490 GEN_FW_RANGE(0x8160, 0x81ff, 0), /* \ 1491 0x8160 - 0x817f: reserved \ 1492 0x8180 - 0x81ff: always on */ \ 1493 GEN_FW_RANGE(0x8200, 0x82ff, FORCEWAKE_GT), \ 1494 GEN_FW_RANGE(0x8300, 0x84ff, FORCEWAKE_RENDER), \ 1495 GEN_FW_RANGE(0x8500, 0x8cff, FORCEWAKE_GT), /* \ 1496 0x8500 - 0x87ff: gt \ 1497 0x8800 - 0x8c7f: reserved \ 1498 0x8c80 - 0x8cff: gt (DG2 only) */ \ 1499 GEN_FW_RANGE(0x8d00, 0x8fff, FORCEWAKE_RENDER), /* \ 1500 0x8d00 - 0x8dff: render (DG2 only) \ 1501 0x8e00 - 0x8fff: reserved */ \ 1502 GEN_FW_RANGE(0x9000, 0x94cf, FORCEWAKE_GT), /* \ 1503 0x9000 - 0x947f: gt \ 1504 0x9480 - 0x94cf: reserved */ \ 1505 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER), \ 1506 GEN_FW_RANGE(0x9560, 0x967f, 0), /* \ 1507 0x9560 - 0x95ff: always on \ 1508 0x9600 - 0x967f: reserved */ \ 1509 GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /* \ 1510 0x9680 - 0x96ff: render (DG2 only) \ 1511 0x9700 - 0x97ff: reserved */ \ 1512 GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /* \ 1513 0x9800 - 0xb4ff: gt \ 1514 0xb500 - 0xbfff: reserved \ 1515 0xc000 - 0xcfff: gt */ \ 1516 GEN_FW_RANGE(0xd000, 0xd7ff, 0), \ 1517 GEN_FW_RANGE(0xd800, 0xd87f, FW_RANGE_D800), \ 1518 GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT), \ 1519 GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER), \ 1520 GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /* \ 1521 0xdd00 - 0xddff: gt \ 1522 0xde00 - 0xde7f: reserved */ \ 1523 GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /* \ 1524 0xde80 - 0xdfff: render \ 1525 0xe000 - 0xe0ff: reserved \ 1526 0xe100 - 0xe8ff: render */ \ 1527 GEN_FW_RANGE(0xe900, 0xffff, FORCEWAKE_GT), /* \ 1528 0xe900 - 0xe9ff: gt \ 1529 0xea00 - 0xefff: reserved \ 1530 0xf000 - 0xffff: gt */ \ 1531 GEN_FW_RANGE(0x10000, 0x12fff, 0), /* \ 1532 0x10000 - 0x11fff: reserved \ 1533 0x12000 - 0x127ff: always on \ 1534 0x12800 - 0x12fff: reserved */ \ 1535 GEN_FW_RANGE(0x13000, 0x131ff, FORCEWAKE_MEDIA_VDBOX0), /* DG2 only */ \ 1536 GEN_FW_RANGE(0x13200, 0x13fff, FORCEWAKE_MEDIA_VDBOX2), /* \ 1537 0x13200 - 0x133ff: VD2 (DG2 only) \ 1538 0x13400 - 0x13fff: reserved */ \ 1539 GEN_FW_RANGE(0x14000, 0x141ff, FORCEWAKE_MEDIA_VDBOX0), /* XEHPSDV only */ \ 1540 GEN_FW_RANGE(0x14200, 0x143ff, FORCEWAKE_MEDIA_VDBOX2), /* XEHPSDV only */ \ 1541 GEN_FW_RANGE(0x14400, 0x145ff, FORCEWAKE_MEDIA_VDBOX4), /* XEHPSDV only */ \ 1542 GEN_FW_RANGE(0x14600, 0x147ff, FORCEWAKE_MEDIA_VDBOX6), /* XEHPSDV only */ \ 1543 GEN_FW_RANGE(0x14800, 0x14fff, FORCEWAKE_RENDER), \ 1544 GEN_FW_RANGE(0x15000, 0x16dff, FORCEWAKE_GT), /* \ 1545 0x15000 - 0x15fff: gt (DG2 only) \ 1546 0x16000 - 0x16dff: reserved */ \ 1547 GEN_FW_RANGE(0x16e00, 0x1ffff, FORCEWAKE_RENDER), \ 1548 GEN_FW_RANGE(0x20000, 0x21fff, FORCEWAKE_MEDIA_VDBOX0), /* \ 1549 0x20000 - 0x20fff: VD0 (XEHPSDV only) \ 1550 0x21000 - 0x21fff: reserved */ \ 1551 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT), \ 1552 GEN_FW_RANGE(0x24000, 0x2417f, 0), /* \ 1553 0x24000 - 0x2407f: always on \ 1554 0x24080 - 0x2417f: reserved */ \ 1555 GEN_FW_RANGE(0x24180, 0x249ff, FORCEWAKE_GT), /* \ 1556 0x24180 - 0x241ff: gt \ 1557 0x24200 - 0x249ff: reserved */ \ 1558 GEN_FW_RANGE(0x24a00, 0x251ff, FORCEWAKE_RENDER), /* \ 1559 0x24a00 - 0x24a7f: render \ 1560 0x24a80 - 0x251ff: reserved */ \ 1561 GEN_FW_RANGE(0x25200, 0x25fff, FORCEWAKE_GT), /* \ 1562 0x25200 - 0x252ff: gt \ 1563 0x25300 - 0x25fff: reserved */ \ 1564 GEN_FW_RANGE(0x26000, 0x2ffff, FORCEWAKE_RENDER), /* \ 1565 0x26000 - 0x27fff: render \ 1566 0x28000 - 0x29fff: reserved \ 1567 0x2a000 - 0x2ffff: undocumented */ \ 1568 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT), \ 1569 GEN_FW_RANGE(0x40000, 0x1bffff, 0), \ 1570 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /* \ 1571 0x1c0000 - 0x1c2bff: VD0 \ 1572 0x1c2c00 - 0x1c2cff: reserved \ 1573 0x1c2d00 - 0x1c2dff: VD0 \ 1574 0x1c2e00 - 0x1c3eff: VD0 (DG2 only) \ 1575 0x1c3f00 - 0x1c3fff: VD0 */ \ 1576 GEN_FW_RANGE(0x1c4000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX1), /* \ 1577 0x1c4000 - 0x1c6bff: VD1 \ 1578 0x1c6c00 - 0x1c6cff: reserved \ 1579 0x1c6d00 - 0x1c6dff: VD1 \ 1580 0x1c6e00 - 0x1c7fff: reserved */ \ 1581 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /* \ 1582 0x1c8000 - 0x1ca0ff: VE0 \ 1583 0x1ca100 - 0x1cbfff: reserved */ \ 1584 GEN_FW_RANGE(0x1cc000, 0x1ccfff, FORCEWAKE_MEDIA_VDBOX0), \ 1585 GEN_FW_RANGE(0x1cd000, 0x1cdfff, FORCEWAKE_MEDIA_VDBOX2), \ 1586 GEN_FW_RANGE(0x1ce000, 0x1cefff, FORCEWAKE_MEDIA_VDBOX4), \ 1587 GEN_FW_RANGE(0x1cf000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX6), \ 1588 GEN_FW_RANGE(0x1d0000, 0x1d3fff, FORCEWAKE_MEDIA_VDBOX2), /* \ 1589 0x1d0000 - 0x1d2bff: VD2 \ 1590 0x1d2c00 - 0x1d2cff: reserved \ 1591 0x1d2d00 - 0x1d2dff: VD2 \ 1592 0x1d2e00 - 0x1d3dff: VD2 (DG2 only) \ 1593 0x1d3e00 - 0x1d3eff: reserved \ 1594 0x1d3f00 - 0x1d3fff: VD2 */ \ 1595 GEN_FW_RANGE(0x1d4000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX3), /* \ 1596 0x1d4000 - 0x1d6bff: VD3 \ 1597 0x1d6c00 - 0x1d6cff: reserved \ 1598 0x1d6d00 - 0x1d6dff: VD3 \ 1599 0x1d6e00 - 0x1d7fff: reserved */ \ 1600 GEN_FW_RANGE(0x1d8000, 0x1dffff, FORCEWAKE_MEDIA_VEBOX1), /* \ 1601 0x1d8000 - 0x1da0ff: VE1 \ 1602 0x1da100 - 0x1dffff: reserved */ \ 1603 GEN_FW_RANGE(0x1e0000, 0x1e3fff, FORCEWAKE_MEDIA_VDBOX4), /* \ 1604 0x1e0000 - 0x1e2bff: VD4 \ 1605 0x1e2c00 - 0x1e2cff: reserved \ 1606 0x1e2d00 - 0x1e2dff: VD4 \ 1607 0x1e2e00 - 0x1e3eff: reserved \ 1608 0x1e3f00 - 0x1e3fff: VD4 */ \ 1609 GEN_FW_RANGE(0x1e4000, 0x1e7fff, FORCEWAKE_MEDIA_VDBOX5), /* \ 1610 0x1e4000 - 0x1e6bff: VD5 \ 1611 0x1e6c00 - 0x1e6cff: reserved \ 1612 0x1e6d00 - 0x1e6dff: VD5 \ 1613 0x1e6e00 - 0x1e7fff: reserved */ \ 1614 GEN_FW_RANGE(0x1e8000, 0x1effff, FORCEWAKE_MEDIA_VEBOX2), /* \ 1615 0x1e8000 - 0x1ea0ff: VE2 \ 1616 0x1ea100 - 0x1effff: reserved */ \ 1617 GEN_FW_RANGE(0x1f0000, 0x1f3fff, FORCEWAKE_MEDIA_VDBOX6), /* \ 1618 0x1f0000 - 0x1f2bff: VD6 \ 1619 0x1f2c00 - 0x1f2cff: reserved \ 1620 0x1f2d00 - 0x1f2dff: VD6 \ 1621 0x1f2e00 - 0x1f3eff: reserved \ 1622 0x1f3f00 - 0x1f3fff: VD6 */ \ 1623 GEN_FW_RANGE(0x1f4000, 0x1f7fff, FORCEWAKE_MEDIA_VDBOX7), /* \ 1624 0x1f4000 - 0x1f6bff: VD7 \ 1625 0x1f6c00 - 0x1f6cff: reserved \ 1626 0x1f6d00 - 0x1f6dff: VD7 \ 1627 0x1f6e00 - 0x1f7fff: reserved */ \ 1628 GEN_FW_RANGE(0x1f8000, 0x1fa0ff, FORCEWAKE_MEDIA_VEBOX3), 1629 1630 static const struct intel_forcewake_range __xehp_fw_ranges[] = { 1631 XEHP_FWRANGES(FORCEWAKE_GT) 1632 }; 1633 1634 static const struct intel_forcewake_range __dg2_fw_ranges[] = { 1635 XEHP_FWRANGES(FORCEWAKE_RENDER) 1636 }; 1637 1638 static const struct intel_forcewake_range __pvc_fw_ranges[] = { 1639 GEN_FW_RANGE(0x0, 0xaff, 0), 1640 GEN_FW_RANGE(0xb00, 0xbff, FORCEWAKE_GT), 1641 GEN_FW_RANGE(0xc00, 0xfff, 0), 1642 GEN_FW_RANGE(0x1000, 0x1fff, FORCEWAKE_GT), 1643 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), 1644 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT), 1645 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER), 1646 GEN_FW_RANGE(0x4000, 0x813f, FORCEWAKE_GT), /* 1647 0x4000 - 0x4aff: gt 1648 0x4b00 - 0x4fff: reserved 1649 0x5000 - 0x51ff: gt 1650 0x5200 - 0x52ff: reserved 1651 0x5300 - 0x53ff: gt 1652 0x5400 - 0x7fff: reserved 1653 0x8000 - 0x813f: gt */ 1654 GEN_FW_RANGE(0x8140, 0x817f, FORCEWAKE_RENDER), 1655 GEN_FW_RANGE(0x8180, 0x81ff, 0), 1656 GEN_FW_RANGE(0x8200, 0x94cf, FORCEWAKE_GT), /* 1657 0x8200 - 0x82ff: gt 1658 0x8300 - 0x84ff: reserved 1659 0x8500 - 0x887f: gt 1660 0x8880 - 0x8a7f: reserved 1661 0x8a80 - 0x8aff: gt 1662 0x8b00 - 0x8fff: reserved 1663 0x9000 - 0x947f: gt 1664 0x9480 - 0x94cf: reserved */ 1665 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER), 1666 GEN_FW_RANGE(0x9560, 0x967f, 0), /* 1667 0x9560 - 0x95ff: always on 1668 0x9600 - 0x967f: reserved */ 1669 GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /* 1670 0x9680 - 0x96ff: render 1671 0x9700 - 0x97ff: reserved */ 1672 GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /* 1673 0x9800 - 0xb4ff: gt 1674 0xb500 - 0xbfff: reserved 1675 0xc000 - 0xcfff: gt */ 1676 GEN_FW_RANGE(0xd000, 0xd3ff, 0), 1677 GEN_FW_RANGE(0xd400, 0xdbff, FORCEWAKE_GT), 1678 GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER), 1679 GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /* 1680 0xdd00 - 0xddff: gt 1681 0xde00 - 0xde7f: reserved */ 1682 GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /* 1683 0xde80 - 0xdeff: render 1684 0xdf00 - 0xe1ff: reserved 1685 0xe200 - 0xe7ff: render 1686 0xe800 - 0xe8ff: reserved */ 1687 GEN_FW_RANGE(0xe900, 0x11fff, FORCEWAKE_GT), /* 1688 0xe900 - 0xe9ff: gt 1689 0xea00 - 0xebff: reserved 1690 0xec00 - 0xffff: gt 1691 0x10000 - 0x11fff: reserved */ 1692 GEN_FW_RANGE(0x12000, 0x12fff, 0), /* 1693 0x12000 - 0x127ff: always on 1694 0x12800 - 0x12fff: reserved */ 1695 GEN_FW_RANGE(0x13000, 0x19fff, FORCEWAKE_GT), /* 1696 0x13000 - 0x135ff: gt 1697 0x13600 - 0x147ff: reserved 1698 0x14800 - 0x153ff: gt 1699 0x15400 - 0x19fff: reserved */ 1700 GEN_FW_RANGE(0x1a000, 0x21fff, FORCEWAKE_RENDER), /* 1701 0x1a000 - 0x1ffff: render 1702 0x20000 - 0x21fff: reserved */ 1703 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT), 1704 GEN_FW_RANGE(0x24000, 0x2417f, 0), /* 1705 24000 - 0x2407f: always on 1706 24080 - 0x2417f: reserved */ 1707 GEN_FW_RANGE(0x24180, 0x25fff, FORCEWAKE_GT), /* 1708 0x24180 - 0x241ff: gt 1709 0x24200 - 0x251ff: reserved 1710 0x25200 - 0x252ff: gt 1711 0x25300 - 0x25fff: reserved */ 1712 GEN_FW_RANGE(0x26000, 0x2ffff, FORCEWAKE_RENDER), /* 1713 0x26000 - 0x27fff: render 1714 0x28000 - 0x2ffff: reserved */ 1715 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT), 1716 GEN_FW_RANGE(0x40000, 0x1bffff, 0), 1717 GEN_FW_RANGE(0x1c0000, 0x1c3fff, FORCEWAKE_MEDIA_VDBOX0), /* 1718 0x1c0000 - 0x1c2bff: VD0 1719 0x1c2c00 - 0x1c2cff: reserved 1720 0x1c2d00 - 0x1c2dff: VD0 1721 0x1c2e00 - 0x1c3eff: reserved 1722 0x1c3f00 - 0x1c3fff: VD0 */ 1723 GEN_FW_RANGE(0x1c4000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX1), /* 1724 0x1c4000 - 0x1c6aff: VD1 1725 0x1c6b00 - 0x1c7eff: reserved 1726 0x1c7f00 - 0x1c7fff: VD1 1727 0x1c8000 - 0x1cffff: reserved */ 1728 GEN_FW_RANGE(0x1d0000, 0x23ffff, FORCEWAKE_MEDIA_VDBOX2), /* 1729 0x1d0000 - 0x1d2aff: VD2 1730 0x1d2b00 - 0x1d3eff: reserved 1731 0x1d3f00 - 0x1d3fff: VD2 1732 0x1d4000 - 0x23ffff: reserved */ 1733 GEN_FW_RANGE(0x240000, 0x3dffff, 0), 1734 GEN_FW_RANGE(0x3e0000, 0x3effff, FORCEWAKE_GT), 1735 }; 1736 1737 static const struct intel_forcewake_range __mtl_fw_ranges[] = { 1738 GEN_FW_RANGE(0x0, 0xaff, 0), 1739 GEN_FW_RANGE(0xb00, 0xbff, FORCEWAKE_GT), 1740 GEN_FW_RANGE(0xc00, 0xfff, 0), 1741 GEN_FW_RANGE(0x1000, 0x1fff, FORCEWAKE_GT), 1742 GEN_FW_RANGE(0x2000, 0x26ff, FORCEWAKE_RENDER), 1743 GEN_FW_RANGE(0x2700, 0x2fff, FORCEWAKE_GT), 1744 GEN_FW_RANGE(0x3000, 0x3fff, FORCEWAKE_RENDER), 1745 GEN_FW_RANGE(0x4000, 0x51ff, FORCEWAKE_GT), /* 1746 0x4000 - 0x48ff: render 1747 0x4900 - 0x51ff: reserved */ 1748 GEN_FW_RANGE(0x5200, 0x7fff, FORCEWAKE_RENDER), /* 1749 0x5200 - 0x53ff: render 1750 0x5400 - 0x54ff: reserved 1751 0x5500 - 0x7fff: render */ 1752 GEN_FW_RANGE(0x8000, 0x813f, FORCEWAKE_GT), 1753 GEN_FW_RANGE(0x8140, 0x817f, FORCEWAKE_RENDER), /* 1754 0x8140 - 0x815f: render 1755 0x8160 - 0x817f: reserved */ 1756 GEN_FW_RANGE(0x8180, 0x81ff, 0), 1757 GEN_FW_RANGE(0x8200, 0x94cf, FORCEWAKE_GT), /* 1758 0x8200 - 0x87ff: gt 1759 0x8800 - 0x8dff: reserved 1760 0x8e00 - 0x8f7f: gt 1761 0x8f80 - 0x8fff: reserved 1762 0x9000 - 0x947f: gt 1763 0x9480 - 0x94cf: reserved */ 1764 GEN_FW_RANGE(0x94d0, 0x955f, FORCEWAKE_RENDER), 1765 GEN_FW_RANGE(0x9560, 0x967f, 0), /* 1766 0x9560 - 0x95ff: always on 1767 0x9600 - 0x967f: reserved */ 1768 GEN_FW_RANGE(0x9680, 0x97ff, FORCEWAKE_RENDER), /* 1769 0x9680 - 0x96ff: render 1770 0x9700 - 0x97ff: reserved */ 1771 GEN_FW_RANGE(0x9800, 0xcfff, FORCEWAKE_GT), /* 1772 0x9800 - 0xb4ff: gt 1773 0xb500 - 0xbfff: reserved 1774 0xc000 - 0xcfff: gt */ 1775 GEN_FW_RANGE(0xd000, 0xd7ff, 0), /* 1776 0xd000 - 0xd3ff: always on 1777 0xd400 - 0xd7ff: reserved */ 1778 GEN_FW_RANGE(0xd800, 0xd87f, FORCEWAKE_RENDER), 1779 GEN_FW_RANGE(0xd880, 0xdbff, FORCEWAKE_GT), 1780 GEN_FW_RANGE(0xdc00, 0xdcff, FORCEWAKE_RENDER), 1781 GEN_FW_RANGE(0xdd00, 0xde7f, FORCEWAKE_GT), /* 1782 0xdd00 - 0xddff: gt 1783 0xde00 - 0xde7f: reserved */ 1784 GEN_FW_RANGE(0xde80, 0xe8ff, FORCEWAKE_RENDER), /* 1785 0xde80 - 0xdfff: render 1786 0xe000 - 0xe0ff: reserved 1787 0xe100 - 0xe8ff: render */ 1788 GEN_FW_RANGE(0xe900, 0xe9ff, FORCEWAKE_GT), 1789 GEN_FW_RANGE(0xea00, 0x147ff, 0), /* 1790 0xea00 - 0x11fff: reserved 1791 0x12000 - 0x127ff: always on 1792 0x12800 - 0x147ff: reserved */ 1793 GEN_FW_RANGE(0x14800, 0x19fff, FORCEWAKE_GT), /* 1794 0x14800 - 0x153ff: gt 1795 0x15400 - 0x19fff: reserved */ 1796 GEN_FW_RANGE(0x1a000, 0x21fff, FORCEWAKE_RENDER), /* 1797 0x1a000 - 0x1bfff: render 1798 0x1c000 - 0x21fff: reserved */ 1799 GEN_FW_RANGE(0x22000, 0x23fff, FORCEWAKE_GT), 1800 GEN_FW_RANGE(0x24000, 0x2ffff, 0), /* 1801 0x24000 - 0x2407f: always on 1802 0x24080 - 0x2ffff: reserved */ 1803 GEN_FW_RANGE(0x30000, 0x3ffff, FORCEWAKE_GT) 1804 }; 1805 1806 /* 1807 * Note that the register ranges here are the final offsets after 1808 * translation of the GSI block to the 0x380000 offset. 1809 * 1810 * NOTE: There are a couple MCR ranges near the bottom of this table 1811 * that need to power up either VD0 or VD2 depending on which replicated 1812 * instance of the register we're trying to access. Our forcewake logic 1813 * at the moment doesn't have a good way to take steering into consideration, 1814 * and the driver doesn't even access any registers in those ranges today, 1815 * so for now we just mark those ranges as FORCEWAKE_ALL. That will ensure 1816 * proper operation if we do start using the ranges in the future, and we 1817 * can determine at that time whether it's worth adding extra complexity to 1818 * the forcewake handling to take steering into consideration. 1819 */ 1820 static const struct intel_forcewake_range __xelpmp_fw_ranges[] = { 1821 GEN_FW_RANGE(0x0, 0x115fff, 0), /* render GT range */ 1822 GEN_FW_RANGE(0x116000, 0x11ffff, FORCEWAKE_GSC), /* 1823 0x116000 - 0x117fff: gsc 1824 0x118000 - 0x119fff: reserved 1825 0x11a000 - 0x11efff: gsc 1826 0x11f000 - 0x11ffff: reserved */ 1827 GEN_FW_RANGE(0x120000, 0x1bffff, 0), /* non-GT range */ 1828 GEN_FW_RANGE(0x1c0000, 0x1c7fff, FORCEWAKE_MEDIA_VDBOX0), /* 1829 0x1c0000 - 0x1c3dff: VD0 1830 0x1c3e00 - 0x1c3eff: reserved 1831 0x1c3f00 - 0x1c3fff: VD0 1832 0x1c4000 - 0x1c7fff: reserved */ 1833 GEN_FW_RANGE(0x1c8000, 0x1cbfff, FORCEWAKE_MEDIA_VEBOX0), /* 1834 0x1c8000 - 0x1ca0ff: VE0 1835 0x1ca100 - 0x1cbfff: reserved */ 1836 GEN_FW_RANGE(0x1cc000, 0x1cffff, FORCEWAKE_MEDIA_VDBOX0), /* 1837 0x1cc000 - 0x1cdfff: VD0 1838 0x1ce000 - 0x1cffff: reserved */ 1839 GEN_FW_RANGE(0x1d0000, 0x1d7fff, FORCEWAKE_MEDIA_VDBOX2), /* 1840 0x1d0000 - 0x1d3dff: VD2 1841 0x1d3e00 - 0x1d3eff: reserved 1842 0x1d4000 - 0x1d7fff: VD2 */ 1843 GEN_FW_RANGE(0x1d8000, 0x1da0ff, FORCEWAKE_MEDIA_VEBOX1), 1844 GEN_FW_RANGE(0x1da100, 0x380aff, 0), /* 1845 0x1da100 - 0x23ffff: reserved 1846 0x240000 - 0x37ffff: non-GT range 1847 0x380000 - 0x380aff: reserved */ 1848 GEN_FW_RANGE(0x380b00, 0x380bff, FORCEWAKE_GT), 1849 GEN_FW_RANGE(0x380c00, 0x380fff, 0), 1850 GEN_FW_RANGE(0x381000, 0x38817f, FORCEWAKE_GT), /* 1851 0x381000 - 0x381fff: gt 1852 0x382000 - 0x383fff: reserved 1853 0x384000 - 0x384aff: gt 1854 0x384b00 - 0x3851ff: reserved 1855 0x385200 - 0x3871ff: gt 1856 0x387200 - 0x387fff: reserved 1857 0x388000 - 0x38813f: gt 1858 0x388140 - 0x38817f: reserved */ 1859 GEN_FW_RANGE(0x388180, 0x3882ff, 0), /* 1860 0x388180 - 0x3881ff: always on 1861 0x388200 - 0x3882ff: reserved */ 1862 GEN_FW_RANGE(0x388300, 0x38955f, FORCEWAKE_GT), /* 1863 0x388300 - 0x38887f: gt 1864 0x388880 - 0x388fff: reserved 1865 0x389000 - 0x38947f: gt 1866 0x389480 - 0x38955f: reserved */ 1867 GEN_FW_RANGE(0x389560, 0x389fff, 0), /* 1868 0x389560 - 0x3895ff: always on 1869 0x389600 - 0x389fff: reserved */ 1870 GEN_FW_RANGE(0x38a000, 0x38cfff, FORCEWAKE_GT), /* 1871 0x38a000 - 0x38afff: gt 1872 0x38b000 - 0x38bfff: reserved 1873 0x38c000 - 0x38cfff: gt */ 1874 GEN_FW_RANGE(0x38d000, 0x38d11f, 0), 1875 GEN_FW_RANGE(0x38d120, 0x391fff, FORCEWAKE_GT), /* 1876 0x38d120 - 0x38dfff: gt 1877 0x38e000 - 0x38efff: reserved 1878 0x38f000 - 0x38ffff: gt 1879 0x389000 - 0x391fff: reserved */ 1880 GEN_FW_RANGE(0x392000, 0x392fff, 0), /* 1881 0x392000 - 0x3927ff: always on 1882 0x392800 - 0x292fff: reserved */ 1883 GEN_FW_RANGE(0x393000, 0x3931ff, FORCEWAKE_GT), 1884 GEN_FW_RANGE(0x393200, 0x39323f, FORCEWAKE_ALL), /* instance-based, see note above */ 1885 GEN_FW_RANGE(0x393240, 0x3933ff, FORCEWAKE_GT), 1886 GEN_FW_RANGE(0x393400, 0x3934ff, FORCEWAKE_ALL), /* instance-based, see note above */ 1887 GEN_FW_RANGE(0x393500, 0x393c7f, 0), /* 1888 0x393500 - 0x393bff: reserved 1889 0x393c00 - 0x393c7f: always on */ 1890 GEN_FW_RANGE(0x393c80, 0x393dff, FORCEWAKE_GT), 1891 }; 1892 1893 static void 1894 ilk_dummy_write(struct intel_uncore *uncore) 1895 { 1896 /* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up 1897 * the chip from rc6 before touching it for real. MI_MODE is masked, 1898 * hence harmless to write 0 into. */ 1899 __raw_uncore_write32(uncore, RING_MI_MODE(RENDER_RING_BASE), 0); 1900 } 1901 1902 static void 1903 __unclaimed_reg_debug(struct intel_uncore *uncore, 1904 const i915_reg_t reg, 1905 const bool read) 1906 { 1907 if (drm_WARN(&uncore->i915->drm, 1908 check_for_unclaimed_mmio(uncore), 1909 "Unclaimed %s register 0x%x\n", 1910 read ? "read from" : "write to", 1911 i915_mmio_reg_offset(reg))) 1912 /* Only report the first N failures */ 1913 uncore->i915->params.mmio_debug--; 1914 } 1915 1916 static void 1917 __unclaimed_previous_reg_debug(struct intel_uncore *uncore, 1918 const i915_reg_t reg, 1919 const bool read) 1920 { 1921 if (check_for_unclaimed_mmio(uncore)) 1922 drm_dbg(&uncore->i915->drm, 1923 "Unclaimed access detected before %s register 0x%x\n", 1924 read ? "read from" : "write to", 1925 i915_mmio_reg_offset(reg)); 1926 } 1927 1928 static inline void 1929 unclaimed_reg_debug(struct intel_uncore *uncore, 1930 const i915_reg_t reg, 1931 const bool read, 1932 const bool before) 1933 { 1934 if (likely(!uncore->i915->params.mmio_debug) || !uncore->debug) 1935 return; 1936 1937 /* interrupts are disabled and re-enabled around uncore->lock usage */ 1938 lockdep_assert_held(&uncore->lock); 1939 1940 if (before) { 1941 spin_lock(&uncore->debug->lock); 1942 __unclaimed_previous_reg_debug(uncore, reg, read); 1943 } else { 1944 __unclaimed_reg_debug(uncore, reg, read); 1945 spin_unlock(&uncore->debug->lock); 1946 } 1947 } 1948 1949 #define __vgpu_read(x) \ 1950 static u##x \ 1951 vgpu_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \ 1952 u##x val = __raw_uncore_read##x(uncore, reg); \ 1953 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ 1954 return val; \ 1955 } 1956 __vgpu_read(8) 1957 __vgpu_read(16) 1958 __vgpu_read(32) 1959 __vgpu_read(64) 1960 1961 #define GEN2_READ_HEADER(x) \ 1962 u##x val = 0; \ 1963 assert_rpm_wakelock_held(uncore->rpm); 1964 1965 #define GEN2_READ_FOOTER \ 1966 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ 1967 return val 1968 1969 #define __gen2_read(x) \ 1970 static u##x \ 1971 gen2_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \ 1972 GEN2_READ_HEADER(x); \ 1973 val = __raw_uncore_read##x(uncore, reg); \ 1974 GEN2_READ_FOOTER; \ 1975 } 1976 1977 #define __gen5_read(x) \ 1978 static u##x \ 1979 gen5_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) { \ 1980 GEN2_READ_HEADER(x); \ 1981 ilk_dummy_write(uncore); \ 1982 val = __raw_uncore_read##x(uncore, reg); \ 1983 GEN2_READ_FOOTER; \ 1984 } 1985 1986 __gen5_read(8) 1987 __gen5_read(16) 1988 __gen5_read(32) 1989 __gen5_read(64) 1990 __gen2_read(8) 1991 __gen2_read(16) 1992 __gen2_read(32) 1993 __gen2_read(64) 1994 1995 #undef __gen5_read 1996 #undef __gen2_read 1997 1998 #undef GEN2_READ_FOOTER 1999 #undef GEN2_READ_HEADER 2000 2001 #define GEN6_READ_HEADER(x) \ 2002 u32 offset = i915_mmio_reg_offset(reg); \ 2003 unsigned long irqflags; \ 2004 u##x val = 0; \ 2005 assert_rpm_wakelock_held(uncore->rpm); \ 2006 spin_lock_irqsave(&uncore->lock, irqflags); \ 2007 unclaimed_reg_debug(uncore, reg, true, true) 2008 2009 #define GEN6_READ_FOOTER \ 2010 unclaimed_reg_debug(uncore, reg, true, false); \ 2011 spin_unlock_irqrestore(&uncore->lock, irqflags); \ 2012 trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ 2013 return val 2014 2015 static noinline void ___force_wake_auto(struct intel_uncore *uncore, 2016 enum forcewake_domains fw_domains) 2017 { 2018 struct intel_uncore_forcewake_domain *domain; 2019 unsigned int tmp; 2020 2021 GEM_BUG_ON(fw_domains & ~uncore->fw_domains); 2022 2023 for_each_fw_domain_masked(domain, fw_domains, uncore, tmp) 2024 fw_domain_arm_timer(domain); 2025 2026 fw_domains_get(uncore, fw_domains); 2027 } 2028 2029 static inline void __force_wake_auto(struct intel_uncore *uncore, 2030 enum forcewake_domains fw_domains) 2031 { 2032 GEM_BUG_ON(!fw_domains); 2033 2034 /* Turn on all requested but inactive supported forcewake domains. */ 2035 fw_domains &= uncore->fw_domains; 2036 fw_domains &= ~uncore->fw_domains_active; 2037 2038 if (fw_domains) 2039 ___force_wake_auto(uncore, fw_domains); 2040 } 2041 2042 #define __gen_fwtable_read(x) \ 2043 static u##x \ 2044 fwtable_read##x(struct intel_uncore *uncore, i915_reg_t reg, bool trace) \ 2045 { \ 2046 enum forcewake_domains fw_engine; \ 2047 GEN6_READ_HEADER(x); \ 2048 fw_engine = __fwtable_reg_read_fw_domains(uncore, offset); \ 2049 if (fw_engine) \ 2050 __force_wake_auto(uncore, fw_engine); \ 2051 val = __raw_uncore_read##x(uncore, reg); \ 2052 GEN6_READ_FOOTER; \ 2053 } 2054 2055 static enum forcewake_domains 2056 fwtable_reg_read_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) { 2057 return __fwtable_reg_read_fw_domains(uncore, i915_mmio_reg_offset(reg)); 2058 } 2059 2060 __gen_fwtable_read(8) 2061 __gen_fwtable_read(16) 2062 __gen_fwtable_read(32) 2063 __gen_fwtable_read(64) 2064 2065 #undef __gen_fwtable_read 2066 #undef GEN6_READ_FOOTER 2067 #undef GEN6_READ_HEADER 2068 2069 #define GEN2_WRITE_HEADER \ 2070 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ 2071 assert_rpm_wakelock_held(uncore->rpm); \ 2072 2073 #define GEN2_WRITE_FOOTER 2074 2075 #define __gen2_write(x) \ 2076 static void \ 2077 gen2_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \ 2078 GEN2_WRITE_HEADER; \ 2079 __raw_uncore_write##x(uncore, reg, val); \ 2080 GEN2_WRITE_FOOTER; \ 2081 } 2082 2083 #define __gen5_write(x) \ 2084 static void \ 2085 gen5_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \ 2086 GEN2_WRITE_HEADER; \ 2087 ilk_dummy_write(uncore); \ 2088 __raw_uncore_write##x(uncore, reg, val); \ 2089 GEN2_WRITE_FOOTER; \ 2090 } 2091 2092 __gen5_write(8) 2093 __gen5_write(16) 2094 __gen5_write(32) 2095 __gen2_write(8) 2096 __gen2_write(16) 2097 __gen2_write(32) 2098 2099 #undef __gen5_write 2100 #undef __gen2_write 2101 2102 #undef GEN2_WRITE_FOOTER 2103 #undef GEN2_WRITE_HEADER 2104 2105 #define GEN6_WRITE_HEADER \ 2106 u32 offset = i915_mmio_reg_offset(reg); \ 2107 unsigned long irqflags; \ 2108 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ 2109 assert_rpm_wakelock_held(uncore->rpm); \ 2110 spin_lock_irqsave(&uncore->lock, irqflags); \ 2111 unclaimed_reg_debug(uncore, reg, false, true) 2112 2113 #define GEN6_WRITE_FOOTER \ 2114 unclaimed_reg_debug(uncore, reg, false, false); \ 2115 spin_unlock_irqrestore(&uncore->lock, irqflags) 2116 2117 #define __gen6_write(x) \ 2118 static void \ 2119 gen6_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \ 2120 GEN6_WRITE_HEADER; \ 2121 if (NEEDS_FORCE_WAKE(offset)) \ 2122 __gen6_gt_wait_for_fifo(uncore); \ 2123 __raw_uncore_write##x(uncore, reg, val); \ 2124 GEN6_WRITE_FOOTER; \ 2125 } 2126 __gen6_write(8) 2127 __gen6_write(16) 2128 __gen6_write(32) 2129 2130 #define __gen_fwtable_write(x) \ 2131 static void \ 2132 fwtable_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \ 2133 enum forcewake_domains fw_engine; \ 2134 GEN6_WRITE_HEADER; \ 2135 fw_engine = __fwtable_reg_write_fw_domains(uncore, offset); \ 2136 if (fw_engine) \ 2137 __force_wake_auto(uncore, fw_engine); \ 2138 __raw_uncore_write##x(uncore, reg, val); \ 2139 GEN6_WRITE_FOOTER; \ 2140 } 2141 2142 static enum forcewake_domains 2143 fwtable_reg_write_fw_domains(struct intel_uncore *uncore, i915_reg_t reg) 2144 { 2145 return __fwtable_reg_write_fw_domains(uncore, i915_mmio_reg_offset(reg)); 2146 } 2147 2148 __gen_fwtable_write(8) 2149 __gen_fwtable_write(16) 2150 __gen_fwtable_write(32) 2151 2152 #undef __gen_fwtable_write 2153 #undef GEN6_WRITE_FOOTER 2154 #undef GEN6_WRITE_HEADER 2155 2156 #define __vgpu_write(x) \ 2157 static void \ 2158 vgpu_write##x(struct intel_uncore *uncore, i915_reg_t reg, u##x val, bool trace) { \ 2159 trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ 2160 __raw_uncore_write##x(uncore, reg, val); \ 2161 } 2162 __vgpu_write(8) 2163 __vgpu_write(16) 2164 __vgpu_write(32) 2165 2166 #define ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, x) \ 2167 do { \ 2168 (uncore)->funcs.mmio_writeb = x##_write8; \ 2169 (uncore)->funcs.mmio_writew = x##_write16; \ 2170 (uncore)->funcs.mmio_writel = x##_write32; \ 2171 } while (0) 2172 2173 #define ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x) \ 2174 do { \ 2175 (uncore)->funcs.mmio_readb = x##_read8; \ 2176 (uncore)->funcs.mmio_readw = x##_read16; \ 2177 (uncore)->funcs.mmio_readl = x##_read32; \ 2178 (uncore)->funcs.mmio_readq = x##_read64; \ 2179 } while (0) 2180 2181 #define ASSIGN_WRITE_MMIO_VFUNCS(uncore, x) \ 2182 do { \ 2183 ASSIGN_RAW_WRITE_MMIO_VFUNCS((uncore), x); \ 2184 (uncore)->funcs.write_fw_domains = x##_reg_write_fw_domains; \ 2185 } while (0) 2186 2187 #define ASSIGN_READ_MMIO_VFUNCS(uncore, x) \ 2188 do { \ 2189 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, x); \ 2190 (uncore)->funcs.read_fw_domains = x##_reg_read_fw_domains; \ 2191 } while (0) 2192 2193 static int __fw_domain_init(struct intel_uncore *uncore, 2194 enum forcewake_domain_id domain_id, 2195 i915_reg_t reg_set, 2196 i915_reg_t reg_ack) 2197 { 2198 struct intel_uncore_forcewake_domain *d; 2199 2200 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT); 2201 GEM_BUG_ON(uncore->fw_domain[domain_id]); 2202 2203 if (i915_inject_probe_failure(uncore->i915)) 2204 return -ENOMEM; 2205 2206 d = kzalloc(sizeof(*d), GFP_KERNEL); 2207 if (!d) 2208 return -ENOMEM; 2209 2210 drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_set)); 2211 drm_WARN_ON(&uncore->i915->drm, !i915_mmio_reg_valid(reg_ack)); 2212 2213 d->uncore = uncore; 2214 d->wake_count = 0; 2215 d->reg_set = uncore->regs + i915_mmio_reg_offset(reg_set) + uncore->gsi_offset; 2216 d->reg_ack = uncore->regs + i915_mmio_reg_offset(reg_ack) + uncore->gsi_offset; 2217 2218 d->id = domain_id; 2219 2220 BUILD_BUG_ON(FORCEWAKE_RENDER != (1 << FW_DOMAIN_ID_RENDER)); 2221 BUILD_BUG_ON(FORCEWAKE_GT != (1 << FW_DOMAIN_ID_GT)); 2222 BUILD_BUG_ON(FORCEWAKE_MEDIA != (1 << FW_DOMAIN_ID_MEDIA)); 2223 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX0)); 2224 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX1)); 2225 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX2)); 2226 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX3)); 2227 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX4 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX4)); 2228 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX5 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX5)); 2229 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX6 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX6)); 2230 BUILD_BUG_ON(FORCEWAKE_MEDIA_VDBOX7 != (1 << FW_DOMAIN_ID_MEDIA_VDBOX7)); 2231 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX0 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX0)); 2232 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX1 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX1)); 2233 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX2 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX2)); 2234 BUILD_BUG_ON(FORCEWAKE_MEDIA_VEBOX3 != (1 << FW_DOMAIN_ID_MEDIA_VEBOX3)); 2235 BUILD_BUG_ON(FORCEWAKE_GSC != (1 << FW_DOMAIN_ID_GSC)); 2236 2237 d->mask = BIT(domain_id); 2238 2239 hrtimer_init(&d->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); 2240 d->timer.function = intel_uncore_fw_release_timer; 2241 2242 uncore->fw_domains |= BIT(domain_id); 2243 2244 fw_domain_reset(d); 2245 2246 uncore->fw_domain[domain_id] = d; 2247 2248 return 0; 2249 } 2250 2251 static void fw_domain_fini(struct intel_uncore *uncore, 2252 enum forcewake_domain_id domain_id) 2253 { 2254 struct intel_uncore_forcewake_domain *d; 2255 2256 GEM_BUG_ON(domain_id >= FW_DOMAIN_ID_COUNT); 2257 2258 d = fetch_and_zero(&uncore->fw_domain[domain_id]); 2259 if (!d) 2260 return; 2261 2262 uncore->fw_domains &= ~BIT(domain_id); 2263 drm_WARN_ON(&uncore->i915->drm, d->wake_count); 2264 drm_WARN_ON(&uncore->i915->drm, hrtimer_cancel(&d->timer)); 2265 kfree(d); 2266 } 2267 2268 static void intel_uncore_fw_domains_fini(struct intel_uncore *uncore) 2269 { 2270 struct intel_uncore_forcewake_domain *d; 2271 int tmp; 2272 2273 for_each_fw_domain(d, uncore, tmp) 2274 fw_domain_fini(uncore, d->id); 2275 } 2276 2277 static const struct intel_uncore_fw_get uncore_get_fallback = { 2278 .force_wake_get = fw_domains_get_with_fallback 2279 }; 2280 2281 static const struct intel_uncore_fw_get uncore_get_normal = { 2282 .force_wake_get = fw_domains_get_normal, 2283 }; 2284 2285 static const struct intel_uncore_fw_get uncore_get_thread_status = { 2286 .force_wake_get = fw_domains_get_with_thread_status 2287 }; 2288 2289 static int intel_uncore_fw_domains_init(struct intel_uncore *uncore) 2290 { 2291 struct drm_i915_private *i915 = uncore->i915; 2292 int ret = 0; 2293 2294 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore)); 2295 2296 #define fw_domain_init(uncore__, id__, set__, ack__) \ 2297 (ret ?: (ret = __fw_domain_init((uncore__), (id__), (set__), (ack__)))) 2298 2299 if (GRAPHICS_VER(i915) >= 11) { 2300 intel_engine_mask_t emask; 2301 int i; 2302 2303 /* we'll prune the domains of missing engines later */ 2304 emask = uncore->gt->info.engine_mask; 2305 2306 uncore->fw_get_funcs = &uncore_get_fallback; 2307 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) 2308 fw_domain_init(uncore, FW_DOMAIN_ID_GT, 2309 FORCEWAKE_GT_GEN9, 2310 FORCEWAKE_ACK_GT_MTL); 2311 else 2312 fw_domain_init(uncore, FW_DOMAIN_ID_GT, 2313 FORCEWAKE_GT_GEN9, 2314 FORCEWAKE_ACK_GT_GEN9); 2315 2316 if (RCS_MASK(uncore->gt) || CCS_MASK(uncore->gt)) 2317 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2318 FORCEWAKE_RENDER_GEN9, 2319 FORCEWAKE_ACK_RENDER_GEN9); 2320 2321 for (i = 0; i < I915_MAX_VCS; i++) { 2322 if (!__HAS_ENGINE(emask, _VCS(i))) 2323 continue; 2324 2325 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VDBOX0 + i, 2326 FORCEWAKE_MEDIA_VDBOX_GEN11(i), 2327 FORCEWAKE_ACK_MEDIA_VDBOX_GEN11(i)); 2328 } 2329 for (i = 0; i < I915_MAX_VECS; i++) { 2330 if (!__HAS_ENGINE(emask, _VECS(i))) 2331 continue; 2332 2333 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA_VEBOX0 + i, 2334 FORCEWAKE_MEDIA_VEBOX_GEN11(i), 2335 FORCEWAKE_ACK_MEDIA_VEBOX_GEN11(i)); 2336 } 2337 2338 if (uncore->gt->type == GT_MEDIA) 2339 fw_domain_init(uncore, FW_DOMAIN_ID_GSC, 2340 FORCEWAKE_REQ_GSC, FORCEWAKE_ACK_GSC); 2341 } else if (IS_GRAPHICS_VER(i915, 9, 10)) { 2342 uncore->fw_get_funcs = &uncore_get_fallback; 2343 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2344 FORCEWAKE_RENDER_GEN9, 2345 FORCEWAKE_ACK_RENDER_GEN9); 2346 fw_domain_init(uncore, FW_DOMAIN_ID_GT, 2347 FORCEWAKE_GT_GEN9, 2348 FORCEWAKE_ACK_GT_GEN9); 2349 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA, 2350 FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9); 2351 } else if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) { 2352 uncore->fw_get_funcs = &uncore_get_normal; 2353 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2354 FORCEWAKE_VLV, FORCEWAKE_ACK_VLV); 2355 fw_domain_init(uncore, FW_DOMAIN_ID_MEDIA, 2356 FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV); 2357 } else if (IS_HASWELL(i915) || IS_BROADWELL(i915)) { 2358 uncore->fw_get_funcs = &uncore_get_thread_status; 2359 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2360 FORCEWAKE_MT, FORCEWAKE_ACK_HSW); 2361 } else if (IS_IVYBRIDGE(i915)) { 2362 u32 ecobus; 2363 2364 /* IVB configs may use multi-threaded forcewake */ 2365 2366 /* A small trick here - if the bios hasn't configured 2367 * MT forcewake, and if the device is in RC6, then 2368 * force_wake_mt_get will not wake the device and the 2369 * ECOBUS read will return zero. Which will be 2370 * (correctly) interpreted by the test below as MT 2371 * forcewake being disabled. 2372 */ 2373 uncore->fw_get_funcs = &uncore_get_thread_status; 2374 2375 /* We need to init first for ECOBUS access and then 2376 * determine later if we want to reinit, in case of MT access is 2377 * not working. In this stage we don't know which flavour this 2378 * ivb is, so it is better to reset also the gen6 fw registers 2379 * before the ecobus check. 2380 */ 2381 2382 __raw_uncore_write32(uncore, FORCEWAKE, 0); 2383 __raw_posting_read(uncore, ECOBUS); 2384 2385 ret = __fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2386 FORCEWAKE_MT, FORCEWAKE_MT_ACK); 2387 if (ret) 2388 goto out; 2389 2390 spin_lock_irq(&uncore->lock); 2391 fw_domains_get_with_thread_status(uncore, FORCEWAKE_RENDER); 2392 ecobus = __raw_uncore_read32(uncore, ECOBUS); 2393 fw_domains_put(uncore, FORCEWAKE_RENDER); 2394 spin_unlock_irq(&uncore->lock); 2395 2396 if (!(ecobus & FORCEWAKE_MT_ENABLE)) { 2397 drm_info(&i915->drm, "No MT forcewake available on Ivybridge, this can result in issues\n"); 2398 drm_info(&i915->drm, "when using vblank-synced partial screen updates.\n"); 2399 fw_domain_fini(uncore, FW_DOMAIN_ID_RENDER); 2400 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2401 FORCEWAKE, FORCEWAKE_ACK); 2402 } 2403 } else if (GRAPHICS_VER(i915) == 6) { 2404 uncore->fw_get_funcs = &uncore_get_thread_status; 2405 fw_domain_init(uncore, FW_DOMAIN_ID_RENDER, 2406 FORCEWAKE, FORCEWAKE_ACK); 2407 } 2408 2409 #undef fw_domain_init 2410 2411 /* All future platforms are expected to require complex power gating */ 2412 drm_WARN_ON(&i915->drm, !ret && uncore->fw_domains == 0); 2413 2414 out: 2415 if (ret) 2416 intel_uncore_fw_domains_fini(uncore); 2417 2418 return ret; 2419 } 2420 2421 #define ASSIGN_FW_DOMAINS_TABLE(uncore, d) \ 2422 { \ 2423 (uncore)->fw_domains_table = \ 2424 (struct intel_forcewake_range *)(d); \ 2425 (uncore)->fw_domains_table_entries = ARRAY_SIZE((d)); \ 2426 } 2427 2428 #define ASSIGN_SHADOW_TABLE(uncore, d) \ 2429 { \ 2430 (uncore)->shadowed_reg_table = d; \ 2431 (uncore)->shadowed_reg_table_entries = ARRAY_SIZE((d)); \ 2432 } 2433 2434 static int i915_pmic_bus_access_notifier(struct notifier_block *nb, 2435 unsigned long action, void *data) 2436 { 2437 struct intel_uncore *uncore = container_of(nb, 2438 struct intel_uncore, pmic_bus_access_nb); 2439 2440 switch (action) { 2441 case MBI_PMIC_BUS_ACCESS_BEGIN: 2442 /* 2443 * forcewake all now to make sure that we don't need to do a 2444 * forcewake later which on systems where this notifier gets 2445 * called requires the punit to access to the shared pmic i2c 2446 * bus, which will be busy after this notification, leading to: 2447 * "render: timed out waiting for forcewake ack request." 2448 * errors. 2449 * 2450 * The notifier is unregistered during intel_runtime_suspend(), 2451 * so it's ok to access the HW here without holding a RPM 2452 * wake reference -> disable wakeref asserts for the time of 2453 * the access. 2454 */ 2455 disable_rpm_wakeref_asserts(uncore->rpm); 2456 intel_uncore_forcewake_get(uncore, FORCEWAKE_ALL); 2457 enable_rpm_wakeref_asserts(uncore->rpm); 2458 break; 2459 case MBI_PMIC_BUS_ACCESS_END: 2460 intel_uncore_forcewake_put(uncore, FORCEWAKE_ALL); 2461 break; 2462 } 2463 2464 return NOTIFY_OK; 2465 } 2466 2467 static void uncore_unmap_mmio(struct drm_device *drm, void *regs) 2468 { 2469 iounmap((void __iomem *)regs); 2470 } 2471 2472 int intel_uncore_setup_mmio(struct intel_uncore *uncore, phys_addr_t phys_addr) 2473 { 2474 struct drm_i915_private *i915 = uncore->i915; 2475 int mmio_size; 2476 2477 /* 2478 * Before gen4, the registers and the GTT are behind different BARs. 2479 * However, from gen4 onwards, the registers and the GTT are shared 2480 * in the same BAR, so we want to restrict this ioremap from 2481 * clobbering the GTT which we want ioremap_wc instead. Fortunately, 2482 * the register BAR remains the same size for all the earlier 2483 * generations up to Ironlake. 2484 * For dgfx chips register range is expanded to 4MB, and this larger 2485 * range is also used for integrated gpus beginning with Meteor Lake. 2486 */ 2487 if (IS_DGFX(i915) || GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) 2488 mmio_size = 4 * 1024 * 1024; 2489 else if (GRAPHICS_VER(i915) >= 5) 2490 mmio_size = 2 * 1024 * 1024; 2491 else 2492 mmio_size = 512 * 1024; 2493 2494 uncore->regs = ioremap(phys_addr, mmio_size); 2495 if (uncore->regs == NULL) { 2496 drm_err(&i915->drm, "failed to map registers\n"); 2497 return -EIO; 2498 } 2499 2500 return drmm_add_action_or_reset(&i915->drm, uncore_unmap_mmio, 2501 (void __force *)uncore->regs); 2502 } 2503 2504 void intel_uncore_init_early(struct intel_uncore *uncore, 2505 struct intel_gt *gt) 2506 { 2507 spin_lock_init(&uncore->lock); 2508 uncore->i915 = gt->i915; 2509 uncore->gt = gt; 2510 uncore->rpm = >->i915->runtime_pm; 2511 } 2512 2513 static void uncore_raw_init(struct intel_uncore *uncore) 2514 { 2515 GEM_BUG_ON(intel_uncore_has_forcewake(uncore)); 2516 2517 if (intel_vgpu_active(uncore->i915)) { 2518 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, vgpu); 2519 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, vgpu); 2520 } else if (GRAPHICS_VER(uncore->i915) == 5) { 2521 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen5); 2522 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen5); 2523 } else { 2524 ASSIGN_RAW_WRITE_MMIO_VFUNCS(uncore, gen2); 2525 ASSIGN_RAW_READ_MMIO_VFUNCS(uncore, gen2); 2526 } 2527 } 2528 2529 static int uncore_media_forcewake_init(struct intel_uncore *uncore) 2530 { 2531 struct drm_i915_private *i915 = uncore->i915; 2532 2533 if (MEDIA_VER(i915) >= 13) { 2534 ASSIGN_FW_DOMAINS_TABLE(uncore, __xelpmp_fw_ranges); 2535 ASSIGN_SHADOW_TABLE(uncore, xelpmp_shadowed_regs); 2536 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2537 } else { 2538 MISSING_CASE(MEDIA_VER(i915)); 2539 return -ENODEV; 2540 } 2541 2542 return 0; 2543 } 2544 2545 static int uncore_forcewake_init(struct intel_uncore *uncore) 2546 { 2547 struct drm_i915_private *i915 = uncore->i915; 2548 int ret; 2549 2550 GEM_BUG_ON(!intel_uncore_has_forcewake(uncore)); 2551 2552 ret = intel_uncore_fw_domains_init(uncore); 2553 if (ret) 2554 return ret; 2555 forcewake_early_sanitize(uncore, 0); 2556 2557 ASSIGN_READ_MMIO_VFUNCS(uncore, fwtable); 2558 2559 if (uncore->gt->type == GT_MEDIA) 2560 return uncore_media_forcewake_init(uncore); 2561 2562 if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 70)) { 2563 ASSIGN_FW_DOMAINS_TABLE(uncore, __mtl_fw_ranges); 2564 ASSIGN_SHADOW_TABLE(uncore, mtl_shadowed_regs); 2565 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2566 } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 60)) { 2567 ASSIGN_FW_DOMAINS_TABLE(uncore, __pvc_fw_ranges); 2568 ASSIGN_SHADOW_TABLE(uncore, pvc_shadowed_regs); 2569 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2570 } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 55)) { 2571 ASSIGN_FW_DOMAINS_TABLE(uncore, __dg2_fw_ranges); 2572 ASSIGN_SHADOW_TABLE(uncore, dg2_shadowed_regs); 2573 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2574 } else if (GRAPHICS_VER_FULL(i915) >= IP_VER(12, 50)) { 2575 ASSIGN_FW_DOMAINS_TABLE(uncore, __xehp_fw_ranges); 2576 ASSIGN_SHADOW_TABLE(uncore, gen12_shadowed_regs); 2577 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2578 } else if (GRAPHICS_VER(i915) >= 12) { 2579 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen12_fw_ranges); 2580 ASSIGN_SHADOW_TABLE(uncore, gen12_shadowed_regs); 2581 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2582 } else if (GRAPHICS_VER(i915) == 11) { 2583 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen11_fw_ranges); 2584 ASSIGN_SHADOW_TABLE(uncore, gen11_shadowed_regs); 2585 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2586 } else if (IS_GRAPHICS_VER(i915, 9, 10)) { 2587 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen9_fw_ranges); 2588 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs); 2589 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2590 } else if (IS_CHERRYVIEW(i915)) { 2591 ASSIGN_FW_DOMAINS_TABLE(uncore, __chv_fw_ranges); 2592 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs); 2593 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2594 } else if (GRAPHICS_VER(i915) == 8) { 2595 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges); 2596 ASSIGN_SHADOW_TABLE(uncore, gen8_shadowed_regs); 2597 ASSIGN_WRITE_MMIO_VFUNCS(uncore, fwtable); 2598 } else if (IS_VALLEYVIEW(i915)) { 2599 ASSIGN_FW_DOMAINS_TABLE(uncore, __vlv_fw_ranges); 2600 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6); 2601 } else if (IS_GRAPHICS_VER(i915, 6, 7)) { 2602 ASSIGN_FW_DOMAINS_TABLE(uncore, __gen6_fw_ranges); 2603 ASSIGN_WRITE_MMIO_VFUNCS(uncore, gen6); 2604 } 2605 2606 uncore->pmic_bus_access_nb.notifier_call = i915_pmic_bus_access_notifier; 2607 iosf_mbi_register_pmic_bus_access_notifier(&uncore->pmic_bus_access_nb); 2608 2609 return 0; 2610 } 2611 2612 static int sanity_check_mmio_access(struct intel_uncore *uncore) 2613 { 2614 struct drm_i915_private *i915 = uncore->i915; 2615 2616 if (GRAPHICS_VER(i915) < 8) 2617 return 0; 2618 2619 /* 2620 * Sanitycheck that MMIO access to the device is working properly. If 2621 * the CPU is unable to communcate with a PCI device, BAR reads will 2622 * return 0xFFFFFFFF. Let's make sure the device isn't in this state 2623 * before we start trying to access registers. 2624 * 2625 * We use the primary GT's forcewake register as our guinea pig since 2626 * it's been around since HSW and it's a masked register so the upper 2627 * 16 bits can never read back as 1's if device access is operating 2628 * properly. 2629 * 2630 * If MMIO isn't working, we'll wait up to 2 seconds to see if it 2631 * recovers, then give up. 2632 */ 2633 #define COND (__raw_uncore_read32(uncore, FORCEWAKE_MT) != ~0) 2634 if (wait_for(COND, 2000) == -ETIMEDOUT) { 2635 drm_err(&i915->drm, "Device is non-operational; MMIO access returns 0xFFFFFFFF!\n"); 2636 return -EIO; 2637 } 2638 2639 return 0; 2640 } 2641 2642 int intel_uncore_init_mmio(struct intel_uncore *uncore) 2643 { 2644 struct drm_i915_private *i915 = uncore->i915; 2645 int ret; 2646 2647 ret = sanity_check_mmio_access(uncore); 2648 if (ret) 2649 return ret; 2650 2651 /* 2652 * The boot firmware initializes local memory and assesses its health. 2653 * If memory training fails, the punit will have been instructed to 2654 * keep the GT powered down; we won't be able to communicate with it 2655 * and we should not continue with driver initialization. 2656 */ 2657 if (IS_DGFX(i915) && 2658 !(__raw_uncore_read32(uncore, GU_CNTL) & LMEM_INIT)) { 2659 drm_err(&i915->drm, "LMEM not initialized by firmware\n"); 2660 return -ENODEV; 2661 } 2662 2663 if (GRAPHICS_VER(i915) > 5 && !intel_vgpu_active(i915)) 2664 uncore->flags |= UNCORE_HAS_FORCEWAKE; 2665 2666 if (!intel_uncore_has_forcewake(uncore)) { 2667 uncore_raw_init(uncore); 2668 } else { 2669 ret = uncore_forcewake_init(uncore); 2670 if (ret) 2671 return ret; 2672 } 2673 2674 /* make sure fw funcs are set if and only if we have fw*/ 2675 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->fw_get_funcs); 2676 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.read_fw_domains); 2677 GEM_BUG_ON(intel_uncore_has_forcewake(uncore) != !!uncore->funcs.write_fw_domains); 2678 2679 if (HAS_FPGA_DBG_UNCLAIMED(i915)) 2680 uncore->flags |= UNCORE_HAS_FPGA_DBG_UNCLAIMED; 2681 2682 if (IS_VALLEYVIEW(i915) || IS_CHERRYVIEW(i915)) 2683 uncore->flags |= UNCORE_HAS_DBG_UNCLAIMED; 2684 2685 if (IS_GRAPHICS_VER(i915, 6, 7)) 2686 uncore->flags |= UNCORE_HAS_FIFO; 2687 2688 /* clear out unclaimed reg detection bit */ 2689 if (intel_uncore_unclaimed_mmio(uncore)) 2690 drm_dbg(&i915->drm, "unclaimed mmio detected on uncore init, clearing\n"); 2691 2692 return 0; 2693 } 2694 2695 /* 2696 * We might have detected that some engines are fused off after we initialized 2697 * the forcewake domains. Prune them, to make sure they only reference existing 2698 * engines. 2699 */ 2700 void intel_uncore_prune_engine_fw_domains(struct intel_uncore *uncore, 2701 struct intel_gt *gt) 2702 { 2703 enum forcewake_domains fw_domains = uncore->fw_domains; 2704 enum forcewake_domain_id domain_id; 2705 int i; 2706 2707 if (!intel_uncore_has_forcewake(uncore) || GRAPHICS_VER(uncore->i915) < 11) 2708 return; 2709 2710 for (i = 0; i < I915_MAX_VCS; i++) { 2711 domain_id = FW_DOMAIN_ID_MEDIA_VDBOX0 + i; 2712 2713 if (HAS_ENGINE(gt, _VCS(i))) 2714 continue; 2715 2716 /* 2717 * Starting with XeHP, the power well for an even-numbered 2718 * VDBOX is also used for shared units within the 2719 * media slice such as SFC. So even if the engine 2720 * itself is fused off, we still need to initialize 2721 * the forcewake domain if any of the other engines 2722 * in the same media slice are present. 2723 */ 2724 if (GRAPHICS_VER_FULL(uncore->i915) >= IP_VER(12, 50) && i % 2 == 0) { 2725 if ((i + 1 < I915_MAX_VCS) && HAS_ENGINE(gt, _VCS(i + 1))) 2726 continue; 2727 2728 if (HAS_ENGINE(gt, _VECS(i / 2))) 2729 continue; 2730 } 2731 2732 if (fw_domains & BIT(domain_id)) 2733 fw_domain_fini(uncore, domain_id); 2734 } 2735 2736 for (i = 0; i < I915_MAX_VECS; i++) { 2737 domain_id = FW_DOMAIN_ID_MEDIA_VEBOX0 + i; 2738 2739 if (HAS_ENGINE(gt, _VECS(i))) 2740 continue; 2741 2742 if (fw_domains & BIT(domain_id)) 2743 fw_domain_fini(uncore, domain_id); 2744 } 2745 2746 if ((fw_domains & BIT(FW_DOMAIN_ID_GSC)) && !HAS_ENGINE(gt, GSC0)) 2747 fw_domain_fini(uncore, FW_DOMAIN_ID_GSC); 2748 } 2749 2750 /* 2751 * The driver-initiated FLR is the highest level of reset that we can trigger 2752 * from within the driver. It is different from the PCI FLR in that it doesn't 2753 * fully reset the SGUnit and doesn't modify the PCI config space and therefore 2754 * it doesn't require a re-enumeration of the PCI BARs. However, the 2755 * driver-initiated FLR does still cause a reset of both GT and display and a 2756 * memory wipe of local and stolen memory, so recovery would require a full HW 2757 * re-init and saving/restoring (or re-populating) the wiped memory. Since we 2758 * perform the FLR as the very last action before releasing access to the HW 2759 * during the driver release flow, we don't attempt recovery at all, because 2760 * if/when a new instance of i915 is bound to the device it will do a full 2761 * re-init anyway. 2762 */ 2763 static void driver_initiated_flr(struct intel_uncore *uncore) 2764 { 2765 struct drm_i915_private *i915 = uncore->i915; 2766 const unsigned int flr_timeout_ms = 3000; /* specs recommend a 3s wait */ 2767 int ret; 2768 2769 drm_dbg(&i915->drm, "Triggering Driver-FLR\n"); 2770 2771 /* 2772 * Make sure any pending FLR requests have cleared by waiting for the 2773 * FLR trigger bit to go to zero. Also clear GU_DEBUG's DRIVERFLR_STATUS 2774 * to make sure it's not still set from a prior attempt (it's a write to 2775 * clear bit). 2776 * Note that we should never be in a situation where a previous attempt 2777 * is still pending (unless the HW is totally dead), but better to be 2778 * safe in case something unexpected happens 2779 */ 2780 ret = intel_wait_for_register_fw(uncore, GU_CNTL, DRIVERFLR, 0, flr_timeout_ms); 2781 if (ret) { 2782 drm_err(&i915->drm, 2783 "Failed to wait for Driver-FLR bit to clear! %d\n", 2784 ret); 2785 return; 2786 } 2787 intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS); 2788 2789 /* Trigger the actual Driver-FLR */ 2790 intel_uncore_rmw_fw(uncore, GU_CNTL, 0, DRIVERFLR); 2791 2792 /* Wait for hardware teardown to complete */ 2793 ret = intel_wait_for_register_fw(uncore, GU_CNTL, 2794 DRIVERFLR, 0, 2795 flr_timeout_ms); 2796 if (ret) { 2797 drm_err(&i915->drm, "Driver-FLR-teardown wait completion failed! %d\n", ret); 2798 return; 2799 } 2800 2801 /* Wait for hardware/firmware re-init to complete */ 2802 ret = intel_wait_for_register_fw(uncore, GU_DEBUG, 2803 DRIVERFLR_STATUS, DRIVERFLR_STATUS, 2804 flr_timeout_ms); 2805 if (ret) { 2806 drm_err(&i915->drm, "Driver-FLR-reinit wait completion failed! %d\n", ret); 2807 return; 2808 } 2809 2810 /* Clear sticky completion status */ 2811 intel_uncore_write_fw(uncore, GU_DEBUG, DRIVERFLR_STATUS); 2812 } 2813 2814 /* Called via drm-managed action */ 2815 void intel_uncore_fini_mmio(struct drm_device *dev, void *data) 2816 { 2817 struct intel_uncore *uncore = data; 2818 2819 if (intel_uncore_has_forcewake(uncore)) { 2820 iosf_mbi_punit_acquire(); 2821 iosf_mbi_unregister_pmic_bus_access_notifier_unlocked( 2822 &uncore->pmic_bus_access_nb); 2823 intel_uncore_forcewake_reset(uncore); 2824 intel_uncore_fw_domains_fini(uncore); 2825 iosf_mbi_punit_release(); 2826 } 2827 2828 if (intel_uncore_needs_flr_on_fini(uncore)) 2829 driver_initiated_flr(uncore); 2830 } 2831 2832 /** 2833 * __intel_wait_for_register_fw - wait until register matches expected state 2834 * @uncore: the struct intel_uncore 2835 * @reg: the register to read 2836 * @mask: mask to apply to register value 2837 * @value: expected value 2838 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait 2839 * @slow_timeout_ms: slow timeout in millisecond 2840 * @out_value: optional placeholder to hold registry value 2841 * 2842 * This routine waits until the target register @reg contains the expected 2843 * @value after applying the @mask, i.e. it waits until :: 2844 * 2845 * (intel_uncore_read_fw(uncore, reg) & mask) == value 2846 * 2847 * Otherwise, the wait will timeout after @slow_timeout_ms milliseconds. 2848 * For atomic context @slow_timeout_ms must be zero and @fast_timeout_us 2849 * must be not larger than 20,0000 microseconds. 2850 * 2851 * Note that this routine assumes the caller holds forcewake asserted, it is 2852 * not suitable for very long waits. See intel_wait_for_register() if you 2853 * wish to wait without holding forcewake for the duration (i.e. you expect 2854 * the wait to be slow). 2855 * 2856 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT. 2857 */ 2858 int __intel_wait_for_register_fw(struct intel_uncore *uncore, 2859 i915_reg_t reg, 2860 u32 mask, 2861 u32 value, 2862 unsigned int fast_timeout_us, 2863 unsigned int slow_timeout_ms, 2864 u32 *out_value) 2865 { 2866 u32 reg_value = 0; 2867 #define done (((reg_value = intel_uncore_read_fw(uncore, reg)) & mask) == value) 2868 int ret; 2869 2870 /* Catch any overuse of this function */ 2871 might_sleep_if(slow_timeout_ms); 2872 GEM_BUG_ON(fast_timeout_us > 20000); 2873 GEM_BUG_ON(!fast_timeout_us && !slow_timeout_ms); 2874 2875 ret = -ETIMEDOUT; 2876 if (fast_timeout_us && fast_timeout_us <= 20000) 2877 ret = _wait_for_atomic(done, fast_timeout_us, 0); 2878 if (ret && slow_timeout_ms) 2879 ret = wait_for(done, slow_timeout_ms); 2880 2881 if (out_value) 2882 *out_value = reg_value; 2883 2884 return ret; 2885 #undef done 2886 } 2887 2888 /** 2889 * __intel_wait_for_register - wait until register matches expected state 2890 * @uncore: the struct intel_uncore 2891 * @reg: the register to read 2892 * @mask: mask to apply to register value 2893 * @value: expected value 2894 * @fast_timeout_us: fast timeout in microsecond for atomic/tight wait 2895 * @slow_timeout_ms: slow timeout in millisecond 2896 * @out_value: optional placeholder to hold registry value 2897 * 2898 * This routine waits until the target register @reg contains the expected 2899 * @value after applying the @mask, i.e. it waits until :: 2900 * 2901 * (intel_uncore_read(uncore, reg) & mask) == value 2902 * 2903 * Otherwise, the wait will timeout after @timeout_ms milliseconds. 2904 * 2905 * Return: 0 if the register matches the desired condition, or -ETIMEDOUT. 2906 */ 2907 int __intel_wait_for_register(struct intel_uncore *uncore, 2908 i915_reg_t reg, 2909 u32 mask, 2910 u32 value, 2911 unsigned int fast_timeout_us, 2912 unsigned int slow_timeout_ms, 2913 u32 *out_value) 2914 { 2915 unsigned fw = 2916 intel_uncore_forcewake_for_reg(uncore, reg, FW_REG_READ); 2917 u32 reg_value; 2918 int ret; 2919 2920 might_sleep_if(slow_timeout_ms); 2921 2922 spin_lock_irq(&uncore->lock); 2923 intel_uncore_forcewake_get__locked(uncore, fw); 2924 2925 ret = __intel_wait_for_register_fw(uncore, 2926 reg, mask, value, 2927 fast_timeout_us, 0, ®_value); 2928 2929 intel_uncore_forcewake_put__locked(uncore, fw); 2930 spin_unlock_irq(&uncore->lock); 2931 2932 if (ret && slow_timeout_ms) 2933 ret = __wait_for(reg_value = intel_uncore_read_notrace(uncore, 2934 reg), 2935 (reg_value & mask) == value, 2936 slow_timeout_ms * 1000, 10, 1000); 2937 2938 /* just trace the final value */ 2939 trace_i915_reg_rw(false, reg, reg_value, sizeof(reg_value), true); 2940 2941 if (out_value) 2942 *out_value = reg_value; 2943 2944 return ret; 2945 } 2946 2947 bool intel_uncore_unclaimed_mmio(struct intel_uncore *uncore) 2948 { 2949 bool ret; 2950 2951 if (!uncore->debug) 2952 return false; 2953 2954 spin_lock_irq(&uncore->debug->lock); 2955 ret = check_for_unclaimed_mmio(uncore); 2956 spin_unlock_irq(&uncore->debug->lock); 2957 2958 return ret; 2959 } 2960 2961 bool 2962 intel_uncore_arm_unclaimed_mmio_detection(struct intel_uncore *uncore) 2963 { 2964 bool ret = false; 2965 2966 if (drm_WARN_ON(&uncore->i915->drm, !uncore->debug)) 2967 return false; 2968 2969 spin_lock_irq(&uncore->debug->lock); 2970 2971 if (unlikely(uncore->debug->unclaimed_mmio_check <= 0)) 2972 goto out; 2973 2974 if (unlikely(check_for_unclaimed_mmio(uncore))) { 2975 if (!uncore->i915->params.mmio_debug) { 2976 drm_dbg(&uncore->i915->drm, 2977 "Unclaimed register detected, " 2978 "enabling oneshot unclaimed register reporting. " 2979 "Please use i915.mmio_debug=N for more information.\n"); 2980 uncore->i915->params.mmio_debug++; 2981 } 2982 uncore->debug->unclaimed_mmio_check--; 2983 ret = true; 2984 } 2985 2986 out: 2987 spin_unlock_irq(&uncore->debug->lock); 2988 2989 return ret; 2990 } 2991 2992 /** 2993 * intel_uncore_forcewake_for_reg - which forcewake domains are needed to access 2994 * a register 2995 * @uncore: pointer to struct intel_uncore 2996 * @reg: register in question 2997 * @op: operation bitmask of FW_REG_READ and/or FW_REG_WRITE 2998 * 2999 * Returns a set of forcewake domains required to be taken with for example 3000 * intel_uncore_forcewake_get for the specified register to be accessible in the 3001 * specified mode (read, write or read/write) with raw mmio accessors. 3002 * 3003 * NOTE: On Gen6 and Gen7 write forcewake domain (FORCEWAKE_RENDER) requires the 3004 * callers to do FIFO management on their own or risk losing writes. 3005 */ 3006 enum forcewake_domains 3007 intel_uncore_forcewake_for_reg(struct intel_uncore *uncore, 3008 i915_reg_t reg, unsigned int op) 3009 { 3010 enum forcewake_domains fw_domains = 0; 3011 3012 drm_WARN_ON(&uncore->i915->drm, !op); 3013 3014 if (!intel_uncore_has_forcewake(uncore)) 3015 return 0; 3016 3017 if (op & FW_REG_READ) 3018 fw_domains = uncore->funcs.read_fw_domains(uncore, reg); 3019 3020 if (op & FW_REG_WRITE) 3021 fw_domains |= uncore->funcs.write_fw_domains(uncore, reg); 3022 3023 drm_WARN_ON(&uncore->i915->drm, fw_domains & ~uncore->fw_domains); 3024 3025 return fw_domains; 3026 } 3027 3028 #if IS_ENABLED(CONFIG_DRM_I915_SELFTEST) 3029 #include "selftests/mock_uncore.c" 3030 #include "selftests/intel_uncore.c" 3031 #endif 3032