arch/x86/events/intel/uncore.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 #include <linux/module.h>
   3
   4 #include <asm/cpu_device_id.h>
   5 #include <asm/intel-family.h>
   6 #include "uncore.h"
   7
   8 static struct intel_uncore_type *empty_uncore[] = { NULL, };
   9 struct intel_uncore_type **uncore_msr_uncores = empty_uncore;
  10 struct intel_uncore_type **uncore_pci_uncores = empty_uncore;
  11
  12 static bool pcidrv_registered;
  13 struct pci_driver *uncore_pci_driver;
  14 /* pci bus to socket mapping */
  15 DEFINE_RAW_SPINLOCK(pci2phy_map_lock);
  16 struct list_head pci2phy_map_head = LIST_HEAD_INIT(pci2phy_map_head);
  17 struct pci_extra_dev *uncore_extra_pci_dev;
  18 static int max_packages;
  19
  20 /* mask of cpus that collect uncore events */
  21 static cpumask_t uncore_cpu_mask;
  22
  23 /* constraint for the fixed counter */
  24 static struct event_constraint uncore_constraint_fixed =
  25         EVENT_CONSTRAINT(~0ULL, 1 << UNCORE_PMC_IDX_FIXED, ~0ULL);
  26 struct event_constraint uncore_constraint_empty =
  27         EVENT_CONSTRAINT(0, 0, 0);
  28
  29 MODULE_LICENSE("GPL");
  30
  31 static int uncore_pcibus_to_physid(struct pci_bus *bus)
  32 {
  33         struct pci2phy_map *map;
  34         int phys_id = -1;
  35
  36         raw_spin_lock(&pci2phy_map_lock);
  37         list_for_each_entry(map, &pci2phy_map_head, list) {
  38                 if (map->segment == pci_domain_nr(bus)) {
  39                         phys_id = map->pbus_to_physid[bus->number];
  40                         break;
  41                 }
  42         }
  43         raw_spin_unlock(&pci2phy_map_lock);
  44
  45         return phys_id;
  46 }
  47
  48 static void uncore_free_pcibus_map(void)
  49 {
  50         struct pci2phy_map *map, *tmp;
  51
  52         list_for_each_entry_safe(map, tmp, &pci2phy_map_head, list) {
  53                 list_del(&map->list);
  54                 kfree(map);
  55         }
  56 }
  57
  58 struct pci2phy_map *__find_pci2phy_map(int segment)
  59 {
  60         struct pci2phy_map *map, *alloc = NULL;
  61         int i;
  62
  63         lockdep_assert_held(&pci2phy_map_lock);
  64
  65 lookup:
  66         list_for_each_entry(map, &pci2phy_map_head, list) {
  67                 if (map->segment == segment)
  68                         goto end;
  69         }
  70
  71         if (!alloc) {
  72                 raw_spin_unlock(&pci2phy_map_lock);
  73                 alloc = kmalloc(sizeof(struct pci2phy_map), GFP_KERNEL);
  74                 raw_spin_lock(&pci2phy_map_lock);
  75
  76                 if (!alloc)
  77                         return NULL;
  78
  79                 goto lookup;
  80         }
  81
  82         map = alloc;
  83         alloc = NULL;
  84         map->segment = segment;
  85         for (i = 0; i < 256; i++)
  86                 map->pbus_to_physid[i] = -1;
  87         list_add_tail(&map->list, &pci2phy_map_head);
  88
  89 end:
  90         kfree(alloc);
  91         return map;
  92 }
  93
  94 ssize_t uncore_event_show(struct kobject *kobj,
  95                           struct kobj_attribute *attr, char *buf)
  96 {
  97         struct uncore_event_desc *event =
  98                 container_of(attr, struct uncore_event_desc, attr);
  99         return sprintf(buf, "%s", event->config);
 100 }
 101
 102 struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu)
 103 {
 104         unsigned int pkgid = topology_logical_package_id(cpu);
 105
 106         /*
 107          * The unsigned check also catches the '-1' return value for non
 108          * existent mappings in the topology map.
 109          */
 110         return pkgid < max_packages ? pmu->boxes[pkgid] : NULL;
 111 }
 112
 113 u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event)
 114 {
 115         u64 count;
 116
 117         rdmsrl(event->hw.event_base, count);
 118
 119         return count;
 120 }
 121
 122 /*
 123  * generic get constraint function for shared match/mask registers.
 124  */
 125 struct event_constraint *
 126 uncore_get_constraint(struct intel_uncore_box *box, struct perf_event *event)
 127 {
 128         struct intel_uncore_extra_reg *er;
 129         struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
 130         struct hw_perf_event_extra *reg2 = &event->hw.branch_reg;
 131         unsigned long flags;
 132         bool ok = false;
 133
 134         /*
 135          * reg->alloc can be set due to existing state, so for fake box we
 136          * need to ignore this, otherwise we might fail to allocate proper
 137          * fake state for this extra reg constraint.
 138          */
 139         if (reg1->idx == EXTRA_REG_NONE ||
 140             (!uncore_box_is_fake(box) && reg1->alloc))
 141                 return NULL;
 142
 143         er = &box->shared_regs[reg1->idx];
 144         raw_spin_lock_irqsave(&er->lock, flags);
 145         if (!atomic_read(&er->ref) ||
 146             (er->config1 == reg1->config && er->config2 == reg2->config)) {
 147                 atomic_inc(&er->ref);
 148                 er->config1 = reg1->config;
 149                 er->config2 = reg2->config;
 150                 ok = true;
 151         }
 152         raw_spin_unlock_irqrestore(&er->lock, flags);
 153
 154         if (ok) {
 155                 if (!uncore_box_is_fake(box))
 156                         reg1->alloc = 1;
 157                 return NULL;
 158         }
 159
 160         return &uncore_constraint_empty;
 161 }
 162
 163 void uncore_put_constraint(struct intel_uncore_box *box, struct perf_event *event)
 164 {
 165         struct intel_uncore_extra_reg *er;
 166         struct hw_perf_event_extra *reg1 = &event->hw.extra_reg;
 167
 168         /*
 169          * Only put constraint if extra reg was actually allocated. Also
 170          * takes care of event which do not use an extra shared reg.
 171          *
 172          * Also, if this is a fake box we shouldn't touch any event state
 173          * (reg->alloc) and we don't care about leaving inconsistent box
 174          * state either since it will be thrown out.
 175          */
 176         if (uncore_box_is_fake(box) || !reg1->alloc)
 177                 return;
 178
 179         er = &box->shared_regs[reg1->idx];
 180         atomic_dec(&er->ref);
 181         reg1->alloc = 0;
 182 }
 183
 184 u64 uncore_shared_reg_config(struct intel_uncore_box *box, int idx)
 185 {
 186         struct intel_uncore_extra_reg *er;
 187         unsigned long flags;
 188         u64 config;
 189
 190         er = &box->shared_regs[idx];
 191
 192         raw_spin_lock_irqsave(&er->lock, flags);
 193         config = er->config;
 194         raw_spin_unlock_irqrestore(&er->lock, flags);
 195
 196         return config;
 197 }
 198
 199 static void uncore_assign_hw_event(struct intel_uncore_box *box,
 200                                    struct perf_event *event, int idx)
 201 {
 202         struct hw_perf_event *hwc = &event->hw;
 203
 204         hwc->idx = idx;
 205         hwc->last_tag = ++box->tags[idx];
 206
 207         if (uncore_pmc_fixed(hwc->idx)) {
 208                 hwc->event_base = uncore_fixed_ctr(box);
 209                 hwc->config_base = uncore_fixed_ctl(box);
 210                 return;
 211         }
 212
 213         hwc->config_base = uncore_event_ctl(box, hwc->idx);
 214         hwc->event_base  = uncore_perf_ctr(box, hwc->idx);
 215 }
 216
 217 void uncore_perf_event_update(struct intel_uncore_box *box, struct perf_event *event)
 218 {
 219         u64 prev_count, new_count, delta;
 220         int shift;
 221
 222         if (uncore_pmc_freerunning(event->hw.idx))
 223                 shift = 64 - uncore_freerunning_bits(box, event);
 224         else if (uncore_pmc_fixed(event->hw.idx))
 225                 shift = 64 - uncore_fixed_ctr_bits(box);
 226         else
 227                 shift = 64 - uncore_perf_ctr_bits(box);
 228
 229         /* the hrtimer might modify the previous event value */
 230 again:
 231         prev_count = local64_read(&event->hw.prev_count);
 232         new_count = uncore_read_counter(box, event);
 233         if (local64_xchg(&event->hw.prev_count, new_count) != prev_count)
 234                 goto again;
 235
 236         delta = (new_count << shift) - (prev_count << shift);
 237         delta >>= shift;
 238
 239         local64_add(delta, &event->count);
 240 }
 241
 242 /*
 243  * The overflow interrupt is unavailable for SandyBridge-EP, is broken
 244  * for SandyBridge. So we use hrtimer to periodically poll the counter
 245  * to avoid overflow.
 246  */
 247 static enum hrtimer_restart uncore_pmu_hrtimer(struct hrtimer *hrtimer)
 248 {
 249         struct intel_uncore_box *box;
 250         struct perf_event *event;
 251         unsigned long flags;
 252         int bit;
 253
 254         box = container_of(hrtimer, struct intel_uncore_box, hrtimer);
 255         if (!box->n_active || box->cpu != smp_processor_id())
 256                 return HRTIMER_NORESTART;
 257         /*
 258          * disable local interrupt to prevent uncore_pmu_event_start/stop
 259          * to interrupt the update process
 260          */
 261         local_irq_save(flags);
 262
 263         /*
 264          * handle boxes with an active event list as opposed to active
 265          * counters
 266          */
 267         list_for_each_entry(event, &box->active_list, active_entry) {
 268                 uncore_perf_event_update(box, event);
 269         }
 270
 271         for_each_set_bit(bit, box->active_mask, UNCORE_PMC_IDX_MAX)
 272                 uncore_perf_event_update(box, box->events[bit]);
 273
 274         local_irq_restore(flags);
 275
 276         hrtimer_forward_now(hrtimer, ns_to_ktime(box->hrtimer_duration));
 277         return HRTIMER_RESTART;
 278 }
 279
 280 void uncore_pmu_start_hrtimer(struct intel_uncore_box *box)
 281 {
 282         hrtimer_start(&box->hrtimer, ns_to_ktime(box->hrtimer_duration),
 283                       HRTIMER_MODE_REL_PINNED);
 284 }
 285
 286 void uncore_pmu_cancel_hrtimer(struct intel_uncore_box *box)
 287 {
 288         hrtimer_cancel(&box->hrtimer);
 289 }
 290
 291 static void uncore_pmu_init_hrtimer(struct intel_uncore_box *box)
 292 {
 293         hrtimer_init(&box->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
 294         box->hrtimer.function = uncore_pmu_hrtimer;
 295 }
 296
 297 static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type,
 298                                                  int node)
 299 {
 300         int i, size, numshared = type->num_shared_regs ;
 301         struct intel_uncore_box *box;
 302
 303         size = sizeof(*box) + numshared * sizeof(struct intel_uncore_extra_reg);
 304
 305         box = kzalloc_node(size, GFP_KERNEL, node);
 306         if (!box)
 307                 return NULL;
 308
 309         for (i = 0; i < numshared; i++)
 310                 raw_spin_lock_init(&box->shared_regs[i].lock);
 311
 312         uncore_pmu_init_hrtimer(box);
 313         box->cpu = -1;
 314         box->pci_phys_id = -1;
 315         box->pkgid = -1;
 316
 317         /* set default hrtimer timeout */
 318         box->hrtimer_duration = UNCORE_PMU_HRTIMER_INTERVAL;
 319
 320         INIT_LIST_HEAD(&box->active_list);
 321
 322         return box;
 323 }
 324
 325 /*
 326  * Using uncore_pmu_event_init pmu event_init callback
 327  * as a detection point for uncore events.
 328  */
 329 static int uncore_pmu_event_init(struct perf_event *event);
 330
 331 static bool is_box_event(struct intel_uncore_box *box, struct perf_event *event)
 332 {
 333         return &box->pmu->pmu == event->pmu;
 334 }
 335
 336 static int
 337 uncore_collect_events(struct intel_uncore_box *box, struct perf_event *leader,
 338                       bool dogrp)
 339 {
 340         struct perf_event *event;
 341         int n, max_count;
 342
 343         max_count = box->pmu->type->num_counters;
 344         if (box->pmu->type->fixed_ctl)
 345                 max_count++;
 346
 347         if (box->n_events >= max_count)
 348                 return -EINVAL;
 349
 350         n = box->n_events;
 351
 352         if (is_box_event(box, leader)) {
 353                 box->event_list[n] = leader;
 354                 n++;
 355         }
 356
 357         if (!dogrp)
 358                 return n;
 359
 360         for_each_sibling_event(event, leader) {
 361                 if (!is_box_event(box, event) ||
 362                     event->state <= PERF_EVENT_STATE_OFF)
 363                         continue;
 364
 365                 if (n >= max_count)
 366                         return -EINVAL;
 367
 368                 box->event_list[n] = event;
 369                 n++;
 370         }
 371         return n;
 372 }
 373
 374 static struct event_constraint *
 375 uncore_get_event_constraint(struct intel_uncore_box *box, struct perf_event *event)
 376 {
 377         struct intel_uncore_type *type = box->pmu->type;
 378         struct event_constraint *c;
 379
 380         if (type->ops->get_constraint) {
 381                 c = type->ops->get_constraint(box, event);
 382                 if (c)
 383                         return c;
 384         }
 385
 386         if (event->attr.config == UNCORE_FIXED_EVENT)
 387                 return &uncore_constraint_fixed;
 388
 389         if (type->constraints) {
 390                 for_each_event_constraint(c, type->constraints) {
 391                         if ((event->hw.config & c->cmask) == c->code)
 392                                 return c;
 393                 }
 394         }
 395
 396         return &type->unconstrainted;
 397 }
 398
 399 static void uncore_put_event_constraint(struct intel_uncore_box *box,
 400                                         struct perf_event *event)
 401 {
 402         if (box->pmu->type->ops->put_constraint)
 403                 box->pmu->type->ops->put_constraint(box, event);
 404 }
 405
 406 static int uncore_assign_events(struct intel_uncore_box *box, int assign[], int n)
 407 {
 408         unsigned long used_mask[BITS_TO_LONGS(UNCORE_PMC_IDX_MAX)];
 409         struct event_constraint *c;
 410         int i, wmin, wmax, ret = 0;
 411         struct hw_perf_event *hwc;
 412
 413         bitmap_zero(used_mask, UNCORE_PMC_IDX_MAX);
 414
 415         for (i = 0, wmin = UNCORE_PMC_IDX_MAX, wmax = 0; i < n; i++) {
 416                 c = uncore_get_event_constraint(box, box->event_list[i]);
 417                 box->event_constraint[i] = c;
 418                 wmin = min(wmin, c->weight);
 419                 wmax = max(wmax, c->weight);
 420         }
 421
 422         /* fastpath, try to reuse previous register */
 423         for (i = 0; i < n; i++) {
 424                 hwc = &box->event_list[i]->hw;
 425                 c = box->event_constraint[i];
 426
 427                 /* never assigned */
 428                 if (hwc->idx == -1)
 429                         break;
 430
 431                 /* constraint still honored */
 432                 if (!test_bit(hwc->idx, c->idxmsk))
 433                         break;
 434
 435                 /* not already used */
 436                 if (test_bit(hwc->idx, used_mask))
 437                         break;
 438
 439                 __set_bit(hwc->idx, used_mask);
 440                 if (assign)
 441                         assign[i] = hwc->idx;
 442         }
 443         /* slow path */
 444         if (i != n)
 445                 ret = perf_assign_events(box->event_constraint, n,
 446                                          wmin, wmax, n, assign);
 447
 448         if (!assign || ret) {
 449                 for (i = 0; i < n; i++)
 450                         uncore_put_event_constraint(box, box->event_list[i]);
 451         }
 452         return ret ? -EINVAL : 0;
 453 }
 454
 455 void uncore_pmu_event_start(struct perf_event *event, int flags)
 456 {
 457         struct intel_uncore_box *box = uncore_event_to_box(event);
 458         int idx = event->hw.idx;
 459
 460         if (WARN_ON_ONCE(idx == -1 || idx >= UNCORE_PMC_IDX_MAX))
 461                 return;
 462
 463         /*
 464          * Free running counter is read-only and always active.
 465          * Use the current counter value as start point.
 466          * There is no overflow interrupt for free running counter.
 467          * Use hrtimer to periodically poll the counter to avoid overflow.
 468          */
 469         if (uncore_pmc_freerunning(event->hw.idx)) {
 470                 list_add_tail(&event->active_entry, &box->active_list);
 471                 local64_set(&event->hw.prev_count,
 472                             uncore_read_counter(box, event));
 473                 if (box->n_active++ == 0)
 474                         uncore_pmu_start_hrtimer(box);
 475                 return;
 476         }
 477
 478         if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED)))
 479                 return;
 480
 481         event->hw.state = 0;
 482         box->events[idx] = event;
 483         box->n_active++;
 484         __set_bit(idx, box->active_mask);
 485
 486         local64_set(&event->hw.prev_count, uncore_read_counter(box, event));
 487         uncore_enable_event(box, event);
 488
 489         if (box->n_active == 1) {
 490                 uncore_enable_box(box);
 491                 uncore_pmu_start_hrtimer(box);
 492         }
 493 }
 494
 495 void uncore_pmu_event_stop(struct perf_event *event, int flags)
 496 {
 497         struct intel_uncore_box *box = uncore_event_to_box(event);
 498         struct hw_perf_event *hwc = &event->hw;
 499
 500         /* Cannot disable free running counter which is read-only */
 501         if (uncore_pmc_freerunning(hwc->idx)) {
 502                 list_del(&event->active_entry);
 503                 if (--box->n_active == 0)
 504                         uncore_pmu_cancel_hrtimer(box);
 505                 uncore_perf_event_update(box, event);
 506                 return;
 507         }
 508
 509         if (__test_and_clear_bit(hwc->idx, box->active_mask)) {
 510                 uncore_disable_event(box, event);
 511                 box->n_active--;
 512                 box->events[hwc->idx] = NULL;
 513                 WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED);
 514                 hwc->state |= PERF_HES_STOPPED;
 515
 516                 if (box->n_active == 0) {
 517                         uncore_disable_box(box);
 518                         uncore_pmu_cancel_hrtimer(box);
 519                 }
 520         }
 521
 522         if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) {
 523                 /*
 524                  * Drain the remaining delta count out of a event
 525                  * that we are disabling:
 526                  */
 527                 uncore_perf_event_update(box, event);
 528                 hwc->state |= PERF_HES_UPTODATE;
 529         }
 530 }
 531
 532 int uncore_pmu_event_add(struct perf_event *event, int flags)
 533 {
 534         struct intel_uncore_box *box = uncore_event_to_box(event);
 535         struct hw_perf_event *hwc = &event->hw;
 536         int assign[UNCORE_PMC_IDX_MAX];
 537         int i, n, ret;
 538
 539         if (!box)
 540                 return -ENODEV;
 541
 542         /*
 543          * The free funning counter is assigned in event_init().
 544          * The free running counter event and free running counter
 545          * are 1:1 mapped. It doesn't need to be tracked in event_list.
 546          */
 547         if (uncore_pmc_freerunning(hwc->idx)) {
 548                 if (flags & PERF_EF_START)
 549                         uncore_pmu_event_start(event, 0);
 550                 return 0;
 551         }
 552
 553         ret = n = uncore_collect_events(box, event, false);
 554         if (ret < 0)
 555                 return ret;
 556
 557         hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
 558         if (!(flags & PERF_EF_START))
 559                 hwc->state |= PERF_HES_ARCH;
 560
 561         ret = uncore_assign_events(box, assign, n);
 562         if (ret)
 563                 return ret;
 564
 565         /* save events moving to new counters */
 566         for (i = 0; i < box->n_events; i++) {
 567                 event = box->event_list[i];
 568                 hwc = &event->hw;
 569
 570                 if (hwc->idx == assign[i] &&
 571                         hwc->last_tag == box->tags[assign[i]])
 572                         continue;
 573                 /*
 574                  * Ensure we don't accidentally enable a stopped
 575                  * counter simply because we rescheduled.
 576                  */
 577                 if (hwc->state & PERF_HES_STOPPED)
 578                         hwc->state |= PERF_HES_ARCH;
 579
 580                 uncore_pmu_event_stop(event, PERF_EF_UPDATE);
 581         }
 582
 583         /* reprogram moved events into new counters */
 584         for (i = 0; i < n; i++) {
 585                 event = box->event_list[i];
 586                 hwc = &event->hw;
 587
 588                 if (hwc->idx != assign[i] ||
 589                         hwc->last_tag != box->tags[assign[i]])
 590                         uncore_assign_hw_event(box, event, assign[i]);
 591                 else if (i < box->n_events)
 592                         continue;
 593
 594                 if (hwc->state & PERF_HES_ARCH)
 595                         continue;
 596
 597                 uncore_pmu_event_start(event, 0);
 598         }
 599         box->n_events = n;
 600
 601         return 0;
 602 }
 603
 604 void uncore_pmu_event_del(struct perf_event *event, int flags)
 605 {
 606         struct intel_uncore_box *box = uncore_event_to_box(event);
 607         int i;
 608
 609         uncore_pmu_event_stop(event, PERF_EF_UPDATE);
 610
 611         /*
 612          * The event for free running counter is not tracked by event_list.
 613          * It doesn't need to force event->hw.idx = -1 to reassign the counter.
 614          * Because the event and the free running counter are 1:1 mapped.
 615          */
 616         if (uncore_pmc_freerunning(event->hw.idx))
 617                 return;
 618
 619         for (i = 0; i < box->n_events; i++) {
 620                 if (event == box->event_list[i]) {
 621                         uncore_put_event_constraint(box, event);
 622
 623                         for (++i; i < box->n_events; i++)
 624                                 box->event_list[i - 1] = box->event_list[i];
 625
 626                         --box->n_events;
 627                         break;
 628                 }
 629         }
 630
 631         event->hw.idx = -1;
 632         event->hw.last_tag = ~0ULL;
 633 }
 634
 635 void uncore_pmu_event_read(struct perf_event *event)
 636 {
 637         struct intel_uncore_box *box = uncore_event_to_box(event);
 638         uncore_perf_event_update(box, event);
 639 }
 640
 641 /*
 642  * validation ensures the group can be loaded onto the
 643  * PMU if it was the only group available.
 644  */
 645 static int uncore_validate_group(struct intel_uncore_pmu *pmu,
 646                                 struct perf_event *event)
 647 {
 648         struct perf_event *leader = event->group_leader;
 649         struct intel_uncore_box *fake_box;
 650         int ret = -EINVAL, n;
 651
 652         /* The free running counter is always active. */
 653         if (uncore_pmc_freerunning(event->hw.idx))
 654                 return 0;
 655
 656         fake_box = uncore_alloc_box(pmu->type, NUMA_NO_NODE);
 657         if (!fake_box)
 658                 return -ENOMEM;
 659
 660         fake_box->pmu = pmu;
 661         /*
 662          * the event is not yet connected with its
 663          * siblings therefore we must first collect
 664          * existing siblings, then add the new event
 665          * before we can simulate the scheduling
 666          */
 667         n = uncore_collect_events(fake_box, leader, true);
 668         if (n < 0)
 669                 goto out;
 670
 671         fake_box->n_events = n;
 672         n = uncore_collect_events(fake_box, event, false);
 673         if (n < 0)
 674                 goto out;
 675
 676         fake_box->n_events = n;
 677
 678         ret = uncore_assign_events(fake_box, NULL, n);
 679 out:
 680         kfree(fake_box);
 681         return ret;
 682 }
 683
 684 static int uncore_pmu_event_init(struct perf_event *event)
 685 {
 686         struct intel_uncore_pmu *pmu;
 687         struct intel_uncore_box *box;
 688         struct hw_perf_event *hwc = &event->hw;
 689         int ret;
 690
 691         if (event->attr.type != event->pmu->type)
 692                 return -ENOENT;
 693
 694         pmu = uncore_event_to_pmu(event);
 695         /* no device found for this pmu */
 696         if (pmu->func_id < 0)
 697                 return -ENOENT;
 698
 699         /* Sampling not supported yet */
 700         if (hwc->sample_period)
 701                 return -EINVAL;
 702
 703         /*
 704          * Place all uncore events for a particular physical package
 705          * onto a single cpu
 706          */
 707         if (event->cpu < 0)
 708                 return -EINVAL;
 709         box = uncore_pmu_to_box(pmu, event->cpu);
 710         if (!box || box->cpu < 0)
 711                 return -EINVAL;
 712         event->cpu = box->cpu;
 713         event->pmu_private = box;
 714
 715         event->event_caps |= PERF_EV_CAP_READ_ACTIVE_PKG;
 716
 717         event->hw.idx = -1;
 718         event->hw.last_tag = ~0ULL;
 719         event->hw.extra_reg.idx = EXTRA_REG_NONE;
 720         event->hw.branch_reg.idx = EXTRA_REG_NONE;
 721
 722         if (event->attr.config == UNCORE_FIXED_EVENT) {
 723                 /* no fixed counter */
 724                 if (!pmu->type->fixed_ctl)
 725                         return -EINVAL;
 726                 /*
 727                  * if there is only one fixed counter, only the first pmu
 728                  * can access the fixed counter
 729                  */
 730                 if (pmu->type->single_fixed && pmu->pmu_idx > 0)
 731                         return -EINVAL;
 732
 733                 /* fixed counters have event field hardcoded to zero */
 734                 hwc->config = 0ULL;
 735         } else if (is_freerunning_event(event)) {
 736                 hwc->config = event->attr.config;
 737                 if (!check_valid_freerunning_event(box, event))
 738                         return -EINVAL;
 739                 event->hw.idx = UNCORE_PMC_IDX_FREERUNNING;
 740                 /*
 741                  * The free running counter event and free running counter
 742                  * are always 1:1 mapped.
 743                  * The free running counter is always active.
 744                  * Assign the free running counter here.
 745                  */
 746                 event->hw.event_base = uncore_freerunning_counter(box, event);
 747         } else {
 748                 hwc->config = event->attr.config &
 749                               (pmu->type->event_mask | ((u64)pmu->type->event_mask_ext << 32));
 750                 if (pmu->type->ops->hw_config) {
 751                         ret = pmu->type->ops->hw_config(box, event);
 752                         if (ret)
 753                                 return ret;
 754                 }
 755         }
 756
 757         if (event->group_leader != event)
 758                 ret = uncore_validate_group(pmu, event);
 759         else
 760                 ret = 0;
 761
 762         return ret;
 763 }
 764
 765 static ssize_t uncore_get_attr_cpumask(struct device *dev,
 766                                 struct device_attribute *attr, char *buf)
 767 {
 768         return cpumap_print_to_pagebuf(true, buf, &uncore_cpu_mask);
 769 }
 770
 771 static DEVICE_ATTR(cpumask, S_IRUGO, uncore_get_attr_cpumask, NULL);
 772
 773 static struct attribute *uncore_pmu_attrs[] = {
 774         &dev_attr_cpumask.attr,
 775         NULL,
 776 };
 777
 778 static const struct attribute_group uncore_pmu_attr_group = {
 779         .attrs = uncore_pmu_attrs,
 780 };
 781
 782 static int uncore_pmu_register(struct intel_uncore_pmu *pmu)
 783 {
 784         int ret;
 785
 786         if (!pmu->type->pmu) {
 787                 pmu->pmu = (struct pmu) {
 788                         .attr_groups    = pmu->type->attr_groups,
 789                         .task_ctx_nr    = perf_invalid_context,
 790                         .event_init     = uncore_pmu_event_init,
 791                         .add            = uncore_pmu_event_add,
 792                         .del            = uncore_pmu_event_del,
 793                         .start          = uncore_pmu_event_start,
 794                         .stop           = uncore_pmu_event_stop,
 795                         .read           = uncore_pmu_event_read,
 796                         .module         = THIS_MODULE,
 797                         .capabilities   = PERF_PMU_CAP_NO_EXCLUDE,
 798                 };
 799         } else {
 800                 pmu->pmu = *pmu->type->pmu;
 801                 pmu->pmu.attr_groups = pmu->type->attr_groups;
 802         }
 803
 804         if (pmu->type->num_boxes == 1) {
 805                 if (strlen(pmu->type->name) > 0)
 806                         sprintf(pmu->name, "uncore_%s", pmu->type->name);
 807                 else
 808                         sprintf(pmu->name, "uncore");
 809         } else {
 810                 sprintf(pmu->name, "uncore_%s_%d", pmu->type->name,
 811                         pmu->pmu_idx);
 812         }
 813
 814         ret = perf_pmu_register(&pmu->pmu, pmu->name, -1);
 815         if (!ret)
 816                 pmu->registered = true;
 817         return ret;
 818 }
 819
 820 static void uncore_pmu_unregister(struct intel_uncore_pmu *pmu)
 821 {
 822         if (!pmu->registered)
 823                 return;
 824         perf_pmu_unregister(&pmu->pmu);
 825         pmu->registered = false;
 826 }
 827
 828 static void uncore_free_boxes(struct intel_uncore_pmu *pmu)
 829 {
 830         int pkg;
 831
 832         for (pkg = 0; pkg < max_packages; pkg++)
 833                 kfree(pmu->boxes[pkg]);
 834         kfree(pmu->boxes);
 835 }
 836
 837 static void uncore_type_exit(struct intel_uncore_type *type)
 838 {
 839         struct intel_uncore_pmu *pmu = type->pmus;
 840         int i;
 841
 842         if (pmu) {
 843                 for (i = 0; i < type->num_boxes; i++, pmu++) {
 844                         uncore_pmu_unregister(pmu);
 845                         uncore_free_boxes(pmu);
 846                 }
 847                 kfree(type->pmus);
 848                 type->pmus = NULL;
 849         }
 850         kfree(type->events_group);
 851         type->events_group = NULL;
 852 }
 853
 854 static void uncore_types_exit(struct intel_uncore_type **types)
 855 {
 856         for (; *types; types++)
 857                 uncore_type_exit(*types);
 858 }
 859
 860 static int __init uncore_type_init(struct intel_uncore_type *type, bool setid)
 861 {
 862         struct intel_uncore_pmu *pmus;
 863         size_t size;
 864         int i, j;
 865
 866         pmus = kcalloc(type->num_boxes, sizeof(*pmus), GFP_KERNEL);
 867         if (!pmus)
 868                 return -ENOMEM;
 869
 870         size = max_packages * sizeof(struct intel_uncore_box *);
 871
 872         for (i = 0; i < type->num_boxes; i++) {
 873                 pmus[i].func_id = setid ? i : -1;
 874                 pmus[i].pmu_idx = i;
 875                 pmus[i].type    = type;
 876                 pmus[i].boxes   = kzalloc(size, GFP_KERNEL);
 877                 if (!pmus[i].boxes)
 878                         goto err;
 879         }
 880
 881         type->pmus = pmus;
 882         type->unconstrainted = (struct event_constraint)
 883                 __EVENT_CONSTRAINT(0, (1ULL << type->num_counters) - 1,
 884                                 0, type->num_counters, 0, 0);
 885
 886         if (type->event_descs) {
 887                 struct {
 888                         struct attribute_group group;
 889                         struct attribute *attrs[];
 890                 } *attr_group;
 891                 for (i = 0; type->event_descs[i].attr.attr.name; i++);
 892
 893                 attr_group = kzalloc(struct_size(attr_group, attrs, i + 1),
 894                                                                 GFP_KERNEL);
 895                 if (!attr_group)
 896                         goto err;
 897
 898                 attr_group->group.name = "events";
 899                 attr_group->group.attrs = attr_group->attrs;
 900
 901                 for (j = 0; j < i; j++)
 902                         attr_group->attrs[j] = &type->event_descs[j].attr.attr;
 903
 904                 type->events_group = &attr_group->group;
 905         }
 906
 907         type->pmu_group = &uncore_pmu_attr_group;
 908
 909         return 0;
 910
 911 err:
 912         for (i = 0; i < type->num_boxes; i++)
 913                 kfree(pmus[i].boxes);
 914         kfree(pmus);
 915
 916         return -ENOMEM;
 917 }
 918
 919 static int __init
 920 uncore_types_init(struct intel_uncore_type **types, bool setid)
 921 {
 922         int ret;
 923
 924         for (; *types; types++) {
 925                 ret = uncore_type_init(*types, setid);
 926                 if (ret)
 927                         return ret;
 928         }
 929         return 0;
 930 }
 931
 932 /*
 933  * add a pci uncore device
 934  */
 935 static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 936 {
 937         struct intel_uncore_type *type;
 938         struct intel_uncore_pmu *pmu = NULL;
 939         struct intel_uncore_box *box;
 940         int phys_id, pkg, ret;
 941
 942         phys_id = uncore_pcibus_to_physid(pdev->bus);
 943         if (phys_id < 0)
 944                 return -ENODEV;
 945
 946         pkg = topology_phys_to_logical_pkg(phys_id);
 947         if (pkg < 0)
 948                 return -EINVAL;
 949
 950         if (UNCORE_PCI_DEV_TYPE(id->driver_data) == UNCORE_EXTRA_PCI_DEV) {
 951                 int idx = UNCORE_PCI_DEV_IDX(id->driver_data);
 952
 953                 uncore_extra_pci_dev[pkg].dev[idx] = pdev;
 954                 pci_set_drvdata(pdev, NULL);
 955                 return 0;
 956         }
 957
 958         type = uncore_pci_uncores[UNCORE_PCI_DEV_TYPE(id->driver_data)];
 959
 960         /*
 961          * Some platforms, e.g.  Knights Landing, use a common PCI device ID
 962          * for multiple instances of an uncore PMU device type. We should check
 963          * PCI slot and func to indicate the uncore box.
 964          */
 965         if (id->driver_data & ~0xffff) {
 966                 struct pci_driver *pci_drv = pdev->driver;
 967                 const struct pci_device_id *ids = pci_drv->id_table;
 968                 unsigned int devfn;
 969
 970                 while (ids && ids->vendor) {
 971                         if ((ids->vendor == pdev->vendor) &&
 972                             (ids->device == pdev->device)) {
 973                                 devfn = PCI_DEVFN(UNCORE_PCI_DEV_DEV(ids->driver_data),
 974                                                   UNCORE_PCI_DEV_FUNC(ids->driver_data));
 975                                 if (devfn == pdev->devfn) {
 976                                         pmu = &type->pmus[UNCORE_PCI_DEV_IDX(ids->driver_data)];
 977                                         break;
 978                                 }
 979                         }
 980                         ids++;
 981                 }
 982                 if (pmu == NULL)
 983                         return -ENODEV;
 984         } else {
 985                 /*
 986                  * for performance monitoring unit with multiple boxes,
 987                  * each box has a different function id.
 988                  */
 989                 pmu = &type->pmus[UNCORE_PCI_DEV_IDX(id->driver_data)];
 990         }
 991
 992         if (WARN_ON_ONCE(pmu->boxes[pkg] != NULL))
 993                 return -EINVAL;
 994
 995         box = uncore_alloc_box(type, NUMA_NO_NODE);
 996         if (!box)
 997                 return -ENOMEM;
 998
 999         if (pmu->func_id < 0)
1000                 pmu->func_id = pdev->devfn;
1001         else
1002                 WARN_ON_ONCE(pmu->func_id != pdev->devfn);
1003
1004         atomic_inc(&box->refcnt);
1005         box->pci_phys_id = phys_id;
1006         box->pkgid = pkg;
1007         box->pci_dev = pdev;
1008         box->pmu = pmu;
1009         uncore_box_init(box);
1010         pci_set_drvdata(pdev, box);
1011
1012         pmu->boxes[pkg] = box;
1013         if (atomic_inc_return(&pmu->activeboxes) > 1)
1014                 return 0;
1015
1016         /* First active box registers the pmu */
1017         ret = uncore_pmu_register(pmu);
1018         if (ret) {
1019                 pci_set_drvdata(pdev, NULL);
1020                 pmu->boxes[pkg] = NULL;
1021                 uncore_box_exit(box);
1022                 kfree(box);
1023         }
1024         return ret;
1025 }
1026
1027 static void uncore_pci_remove(struct pci_dev *pdev)
1028 {
1029         struct intel_uncore_box *box;
1030         struct intel_uncore_pmu *pmu;
1031         int i, phys_id, pkg;
1032
1033         phys_id = uncore_pcibus_to_physid(pdev->bus);
1034
1035         box = pci_get_drvdata(pdev);
1036         if (!box) {
1037                 pkg = topology_phys_to_logical_pkg(phys_id);
1038                 for (i = 0; i < UNCORE_EXTRA_PCI_DEV_MAX; i++) {
1039                         if (uncore_extra_pci_dev[pkg].dev[i] == pdev) {
1040                                 uncore_extra_pci_dev[pkg].dev[i] = NULL;
1041                                 break;
1042                         }
1043                 }
1044                 WARN_ON_ONCE(i >= UNCORE_EXTRA_PCI_DEV_MAX);
1045                 return;
1046         }
1047
1048         pmu = box->pmu;
1049         if (WARN_ON_ONCE(phys_id != box->pci_phys_id))
1050                 return;
1051
1052         pci_set_drvdata(pdev, NULL);
1053         pmu->boxes[box->pkgid] = NULL;
1054         if (atomic_dec_return(&pmu->activeboxes) == 0)
1055                 uncore_pmu_unregister(pmu);
1056         uncore_box_exit(box);
1057         kfree(box);
1058 }
1059
1060 static int __init uncore_pci_init(void)
1061 {
1062         size_t size;
1063         int ret;
1064
1065         size = max_packages * sizeof(struct pci_extra_dev);
1066         uncore_extra_pci_dev = kzalloc(size, GFP_KERNEL);
1067         if (!uncore_extra_pci_dev) {
1068                 ret = -ENOMEM;
1069                 goto err;
1070         }
1071
1072         ret = uncore_types_init(uncore_pci_uncores, false);
1073         if (ret)
1074                 goto errtype;
1075
1076         uncore_pci_driver->probe = uncore_pci_probe;
1077         uncore_pci_driver->remove = uncore_pci_remove;
1078
1079         ret = pci_register_driver(uncore_pci_driver);
1080         if (ret)
1081                 goto errtype;
1082
1083         pcidrv_registered = true;
1084         return 0;
1085
1086 errtype:
1087         uncore_types_exit(uncore_pci_uncores);
1088         kfree(uncore_extra_pci_dev);
1089         uncore_extra_pci_dev = NULL;
1090         uncore_free_pcibus_map();
1091 err:
1092         uncore_pci_uncores = empty_uncore;
1093         return ret;
1094 }
1095
1096 static void uncore_pci_exit(void)
1097 {
1098         if (pcidrv_registered) {
1099                 pcidrv_registered = false;
1100                 pci_unregister_driver(uncore_pci_driver);
1101                 uncore_types_exit(uncore_pci_uncores);
1102                 kfree(uncore_extra_pci_dev);
1103                 uncore_free_pcibus_map();
1104         }
1105 }
1106
1107 static void uncore_change_type_ctx(struct intel_uncore_type *type, int old_cpu,
1108                                    int new_cpu)
1109 {
1110         struct intel_uncore_pmu *pmu = type->pmus;
1111         struct intel_uncore_box *box;
1112         int i, pkg;
1113
1114         pkg = topology_logical_package_id(old_cpu < 0 ? new_cpu : old_cpu);
1115         for (i = 0; i < type->num_boxes; i++, pmu++) {
1116                 box = pmu->boxes[pkg];
1117                 if (!box)
1118                         continue;
1119
1120                 if (old_cpu < 0) {
1121                         WARN_ON_ONCE(box->cpu != -1);
1122                         box->cpu = new_cpu;
1123                         continue;
1124                 }
1125
1126                 WARN_ON_ONCE(box->cpu != old_cpu);
1127                 box->cpu = -1;
1128                 if (new_cpu < 0)
1129                         continue;
1130
1131                 uncore_pmu_cancel_hrtimer(box);
1132                 perf_pmu_migrate_context(&pmu->pmu, old_cpu, new_cpu);
1133                 box->cpu = new_cpu;
1134         }
1135 }
1136
1137 static void uncore_change_context(struct intel_uncore_type **uncores,
1138                                   int old_cpu, int new_cpu)
1139 {
1140         for (; *uncores; uncores++)
1141                 uncore_change_type_ctx(*uncores, old_cpu, new_cpu);
1142 }
1143
1144 static int uncore_event_cpu_offline(unsigned int cpu)
1145 {
1146         struct intel_uncore_type *type, **types = uncore_msr_uncores;
1147         struct intel_uncore_pmu *pmu;
1148         struct intel_uncore_box *box;
1149         int i, pkg, target;
1150
1151         /* Check if exiting cpu is used for collecting uncore events */
1152         if (!cpumask_test_and_clear_cpu(cpu, &uncore_cpu_mask))
1153                 goto unref;
1154         /* Find a new cpu to collect uncore events */
1155         target = cpumask_any_but(topology_core_cpumask(cpu), cpu);
1156
1157         /* Migrate uncore events to the new target */
1158         if (target < nr_cpu_ids)
1159                 cpumask_set_cpu(target, &uncore_cpu_mask);
1160         else
1161                 target = -1;
1162
1163         uncore_change_context(uncore_msr_uncores, cpu, target);
1164         uncore_change_context(uncore_pci_uncores, cpu, target);
1165
1166 unref:
1167         /* Clear the references */
1168         pkg = topology_logical_package_id(cpu);
1169         for (; *types; types++) {
1170                 type = *types;
1171                 pmu = type->pmus;
1172                 for (i = 0; i < type->num_boxes; i++, pmu++) {
1173                         box = pmu->boxes[pkg];
1174                         if (box && atomic_dec_return(&box->refcnt) == 0)
1175                                 uncore_box_exit(box);
1176                 }
1177         }
1178         return 0;
1179 }
1180
1181 static int allocate_boxes(struct intel_uncore_type **types,
1182                          unsigned int pkg, unsigned int cpu)
1183 {
1184         struct intel_uncore_box *box, *tmp;
1185         struct intel_uncore_type *type;
1186         struct intel_uncore_pmu *pmu;
1187         LIST_HEAD(allocated);
1188         int i;
1189
1190         /* Try to allocate all required boxes */
1191         for (; *types; types++) {
1192                 type = *types;
1193                 pmu = type->pmus;
1194                 for (i = 0; i < type->num_boxes; i++, pmu++) {
1195                         if (pmu->boxes[pkg])
1196                                 continue;
1197                         box = uncore_alloc_box(type, cpu_to_node(cpu));
1198                         if (!box)
1199                                 goto cleanup;
1200                         box->pmu = pmu;
1201                         box->pkgid = pkg;
1202                         list_add(&box->active_list, &allocated);
1203                 }
1204         }
1205         /* Install them in the pmus */
1206         list_for_each_entry_safe(box, tmp, &allocated, active_list) {
1207                 list_del_init(&box->active_list);
1208                 box->pmu->boxes[pkg] = box;
1209         }
1210         return 0;
1211
1212 cleanup:
1213         list_for_each_entry_safe(box, tmp, &allocated, active_list) {
1214                 list_del_init(&box->active_list);
1215                 kfree(box);
1216         }
1217         return -ENOMEM;
1218 }
1219
1220 static int uncore_event_cpu_online(unsigned int cpu)
1221 {
1222         struct intel_uncore_type *type, **types = uncore_msr_uncores;
1223         struct intel_uncore_pmu *pmu;
1224         struct intel_uncore_box *box;
1225         int i, ret, pkg, target;
1226
1227         pkg = topology_logical_package_id(cpu);
1228         ret = allocate_boxes(types, pkg, cpu);
1229         if (ret)
1230                 return ret;
1231
1232         for (; *types; types++) {
1233                 type = *types;
1234                 pmu = type->pmus;
1235                 for (i = 0; i < type->num_boxes; i++, pmu++) {
1236                         box = pmu->boxes[pkg];
1237                         if (box && atomic_inc_return(&box->refcnt) == 1)
1238                                 uncore_box_init(box);
1239                 }
1240         }
1241
1242         /*
1243          * Check if there is an online cpu in the package
1244          * which collects uncore events already.
1245          */
1246         target = cpumask_any_and(&uncore_cpu_mask, topology_core_cpumask(cpu));
1247         if (target < nr_cpu_ids)
1248                 return 0;
1249
1250         cpumask_set_cpu(cpu, &uncore_cpu_mask);
1251
1252         uncore_change_context(uncore_msr_uncores, -1, cpu);
1253         uncore_change_context(uncore_pci_uncores, -1, cpu);
1254         return 0;
1255 }
1256
1257 static int __init type_pmu_register(struct intel_uncore_type *type)
1258 {
1259         int i, ret;
1260
1261         for (i = 0; i < type->num_boxes; i++) {
1262                 ret = uncore_pmu_register(&type->pmus[i]);
1263                 if (ret)
1264                         return ret;
1265         }
1266         return 0;
1267 }
1268
1269 static int __init uncore_msr_pmus_register(void)
1270 {
1271         struct intel_uncore_type **types = uncore_msr_uncores;
1272         int ret;
1273
1274         for (; *types; types++) {
1275                 ret = type_pmu_register(*types);
1276                 if (ret)
1277                         return ret;
1278         }
1279         return 0;
1280 }
1281
1282 static int __init uncore_cpu_init(void)
1283 {
1284         int ret;
1285
1286         ret = uncore_types_init(uncore_msr_uncores, true);
1287         if (ret)
1288                 goto err;
1289
1290         ret = uncore_msr_pmus_register();
1291         if (ret)
1292                 goto err;
1293         return 0;
1294 err:
1295         uncore_types_exit(uncore_msr_uncores);
1296         uncore_msr_uncores = empty_uncore;
1297         return ret;
1298 }
1299
1300 #define X86_UNCORE_MODEL_MATCH(model, init)     \
1301         { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&init }
1302
1303 struct intel_uncore_init_fun {
1304         void    (*cpu_init)(void);
1305         int     (*pci_init)(void);
1306 };
1307
1308 static const struct intel_uncore_init_fun nhm_uncore_init __initconst = {
1309         .cpu_init = nhm_uncore_cpu_init,
1310 };
1311
1312 static const struct intel_uncore_init_fun snb_uncore_init __initconst = {
1313         .cpu_init = snb_uncore_cpu_init,
1314         .pci_init = snb_uncore_pci_init,
1315 };
1316
1317 static const struct intel_uncore_init_fun ivb_uncore_init __initconst = {
1318         .cpu_init = snb_uncore_cpu_init,
1319         .pci_init = ivb_uncore_pci_init,
1320 };
1321
1322 static const struct intel_uncore_init_fun hsw_uncore_init __initconst = {
1323         .cpu_init = snb_uncore_cpu_init,
1324         .pci_init = hsw_uncore_pci_init,
1325 };
1326
1327 static const struct intel_uncore_init_fun bdw_uncore_init __initconst = {
1328         .cpu_init = snb_uncore_cpu_init,
1329         .pci_init = bdw_uncore_pci_init,
1330 };
1331
1332 static const struct intel_uncore_init_fun snbep_uncore_init __initconst = {
1333         .cpu_init = snbep_uncore_cpu_init,
1334         .pci_init = snbep_uncore_pci_init,
1335 };
1336
1337 static const struct intel_uncore_init_fun nhmex_uncore_init __initconst = {
1338         .cpu_init = nhmex_uncore_cpu_init,
1339 };
1340
1341 static const struct intel_uncore_init_fun ivbep_uncore_init __initconst = {
1342         .cpu_init = ivbep_uncore_cpu_init,
1343         .pci_init = ivbep_uncore_pci_init,
1344 };
1345
1346 static const struct intel_uncore_init_fun hswep_uncore_init __initconst = {
1347         .cpu_init = hswep_uncore_cpu_init,
1348         .pci_init = hswep_uncore_pci_init,
1349 };
1350
1351 static const struct intel_uncore_init_fun bdx_uncore_init __initconst = {
1352         .cpu_init = bdx_uncore_cpu_init,
1353         .pci_init = bdx_uncore_pci_init,
1354 };
1355
1356 static const struct intel_uncore_init_fun knl_uncore_init __initconst = {
1357         .cpu_init = knl_uncore_cpu_init,
1358         .pci_init = knl_uncore_pci_init,
1359 };
1360
1361 static const struct intel_uncore_init_fun skl_uncore_init __initconst = {
1362         .cpu_init = skl_uncore_cpu_init,
1363         .pci_init = skl_uncore_pci_init,
1364 };
1365
1366 static const struct intel_uncore_init_fun skx_uncore_init __initconst = {
1367         .cpu_init = skx_uncore_cpu_init,
1368         .pci_init = skx_uncore_pci_init,
1369 };
1370
1371 static const struct intel_uncore_init_fun icl_uncore_init __initconst = {
1372         .cpu_init = icl_uncore_cpu_init,
1373         .pci_init = skl_uncore_pci_init,
1374 };
1375
1376 static const struct x86_cpu_id intel_uncore_match[] __initconst = {
1377         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_NEHALEM_EP,     nhm_uncore_init),
1378         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_NEHALEM,        nhm_uncore_init),
1379         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_WESTMERE,       nhm_uncore_init),
1380         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_WESTMERE_EP,    nhm_uncore_init),
1381         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_SANDYBRIDGE,    snb_uncore_init),
1382         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_IVYBRIDGE,      ivb_uncore_init),
1383         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_HASWELL_CORE,   hsw_uncore_init),
1384         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_HASWELL_ULT,    hsw_uncore_init),
1385         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_HASWELL_GT3E,   hsw_uncore_init),
1386         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_BROADWELL_CORE, bdw_uncore_init),
1387         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_BROADWELL_GT3E, bdw_uncore_init),
1388         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_SANDYBRIDGE_X,  snbep_uncore_init),
1389         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_NEHALEM_EX,     nhmex_uncore_init),
1390         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_WESTMERE_EX,    nhmex_uncore_init),
1391         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_IVYBRIDGE_X,    ivbep_uncore_init),
1392         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_HASWELL_X,      hswep_uncore_init),
1393         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_BROADWELL_X,    bdx_uncore_init),
1394         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_BROADWELL_XEON_D, bdx_uncore_init),
1395         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_XEON_PHI_KNL,   knl_uncore_init),
1396         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_XEON_PHI_KNM,   knl_uncore_init),
1397         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_SKYLAKE_DESKTOP,skl_uncore_init),
1398         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_SKYLAKE_MOBILE, skl_uncore_init),
1399         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_SKYLAKE_X,      skx_uncore_init),
1400         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_KABYLAKE_MOBILE, skl_uncore_init),
1401         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_KABYLAKE_DESKTOP, skl_uncore_init),
1402         X86_UNCORE_MODEL_MATCH(INTEL_FAM6_ICELAKE_MOBILE, icl_uncore_init),
1403         {},
1404 };
1405
1406 MODULE_DEVICE_TABLE(x86cpu, intel_uncore_match);
1407
1408 static int __init intel_uncore_init(void)
1409 {
1410         const struct x86_cpu_id *id;
1411         struct intel_uncore_init_fun *uncore_init;
1412         int pret = 0, cret = 0, ret;
1413
1414         id = x86_match_cpu(intel_uncore_match);
1415         if (!id)
1416                 return -ENODEV;
1417
1418         if (boot_cpu_has(X86_FEATURE_HYPERVISOR))
1419                 return -ENODEV;
1420
1421         max_packages = topology_max_packages();
1422
1423         uncore_init = (struct intel_uncore_init_fun *)id->driver_data;
1424         if (uncore_init->pci_init) {
1425                 pret = uncore_init->pci_init();
1426                 if (!pret)
1427                         pret = uncore_pci_init();
1428         }
1429
1430         if (uncore_init->cpu_init) {
1431                 uncore_init->cpu_init();
1432                 cret = uncore_cpu_init();
1433         }
1434
1435         if (cret && pret)
1436                 return -ENODEV;
1437
1438         /* Install hotplug callbacks to setup the targets for each package */
1439         ret = cpuhp_setup_state(CPUHP_AP_PERF_X86_UNCORE_ONLINE,
1440                                 "perf/x86/intel/uncore:online",
1441                                 uncore_event_cpu_online,
1442                                 uncore_event_cpu_offline);
1443         if (ret)
1444                 goto err;
1445         return 0;
1446
1447 err:
1448         uncore_types_exit(uncore_msr_uncores);
1449         uncore_pci_exit();
1450         return ret;
1451 }
1452 module_init(intel_uncore_init);
1453
1454 static void __exit intel_uncore_exit(void)
1455 {
1456         cpuhp_remove_state(CPUHP_AP_PERF_X86_UNCORE_ONLINE);
1457         uncore_types_exit(uncore_msr_uncores);
1458         uncore_pci_exit();
1459 }
1460 module_exit(intel_uncore_exit);