Borislav Petkov | 6bcb2db | 2016-02-10 10:55:15 +0100 | [diff] [blame] | 1 | #include "uncore.h" |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 2 | |
| 3 | static struct intel_uncore_type *empty_uncore[] = { NULL, }; |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 4 | struct intel_uncore_type **uncore_msr_uncores = empty_uncore; |
| 5 | struct intel_uncore_type **uncore_pci_uncores = empty_uncore; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 6 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 7 | static bool pcidrv_registered; |
| 8 | struct pci_driver *uncore_pci_driver; |
| 9 | /* pci bus to socket mapping */ |
Taku Izumi | 712df65 | 2015-09-24 21:10:21 +0900 | [diff] [blame] | 10 | DEFINE_RAW_SPINLOCK(pci2phy_map_lock); |
| 11 | struct list_head pci2phy_map_head = LIST_HEAD_INIT(pci2phy_map_head); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 12 | struct pci_extra_dev *uncore_extra_pci_dev; |
| 13 | static int max_packages; |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 14 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 15 | /* mask of cpus that collect uncore events */ |
| 16 | static cpumask_t uncore_cpu_mask; |
| 17 | |
| 18 | /* constraint for the fixed counter */ |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 19 | static struct event_constraint uncore_constraint_fixed = |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 20 | EVENT_CONSTRAINT(~0ULL, 1 << UNCORE_PMC_IDX_FIXED, ~0ULL); |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 21 | struct event_constraint uncore_constraint_empty = |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 22 | EVENT_CONSTRAINT(0, 0, 0); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 23 | |
Thomas Gleixner | 1384c70 | 2016-02-22 22:19:13 +0000 | [diff] [blame] | 24 | static int uncore_pcibus_to_physid(struct pci_bus *bus) |
Taku Izumi | 712df65 | 2015-09-24 21:10:21 +0900 | [diff] [blame] | 25 | { |
| 26 | struct pci2phy_map *map; |
| 27 | int phys_id = -1; |
| 28 | |
| 29 | raw_spin_lock(&pci2phy_map_lock); |
| 30 | list_for_each_entry(map, &pci2phy_map_head, list) { |
| 31 | if (map->segment == pci_domain_nr(bus)) { |
| 32 | phys_id = map->pbus_to_physid[bus->number]; |
| 33 | break; |
| 34 | } |
| 35 | } |
| 36 | raw_spin_unlock(&pci2phy_map_lock); |
| 37 | |
| 38 | return phys_id; |
| 39 | } |
| 40 | |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 41 | static void uncore_free_pcibus_map(void) |
| 42 | { |
| 43 | struct pci2phy_map *map, *tmp; |
| 44 | |
| 45 | list_for_each_entry_safe(map, tmp, &pci2phy_map_head, list) { |
| 46 | list_del(&map->list); |
| 47 | kfree(map); |
| 48 | } |
| 49 | } |
| 50 | |
Taku Izumi | 712df65 | 2015-09-24 21:10:21 +0900 | [diff] [blame] | 51 | struct pci2phy_map *__find_pci2phy_map(int segment) |
| 52 | { |
| 53 | struct pci2phy_map *map, *alloc = NULL; |
| 54 | int i; |
| 55 | |
| 56 | lockdep_assert_held(&pci2phy_map_lock); |
| 57 | |
| 58 | lookup: |
| 59 | list_for_each_entry(map, &pci2phy_map_head, list) { |
| 60 | if (map->segment == segment) |
| 61 | goto end; |
| 62 | } |
| 63 | |
| 64 | if (!alloc) { |
| 65 | raw_spin_unlock(&pci2phy_map_lock); |
| 66 | alloc = kmalloc(sizeof(struct pci2phy_map), GFP_KERNEL); |
| 67 | raw_spin_lock(&pci2phy_map_lock); |
| 68 | |
| 69 | if (!alloc) |
| 70 | return NULL; |
| 71 | |
| 72 | goto lookup; |
| 73 | } |
| 74 | |
| 75 | map = alloc; |
| 76 | alloc = NULL; |
| 77 | map->segment = segment; |
| 78 | for (i = 0; i < 256; i++) |
| 79 | map->pbus_to_physid[i] = -1; |
| 80 | list_add_tail(&map->list, &pci2phy_map_head); |
| 81 | |
| 82 | end: |
| 83 | kfree(alloc); |
| 84 | return map; |
| 85 | } |
| 86 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 87 | ssize_t uncore_event_show(struct kobject *kobj, |
| 88 | struct kobj_attribute *attr, char *buf) |
| 89 | { |
| 90 | struct uncore_event_desc *event = |
| 91 | container_of(attr, struct uncore_event_desc, attr); |
| 92 | return sprintf(buf, "%s", event->config); |
| 93 | } |
| 94 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 95 | struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu) |
Stephane Eranian | 001e413 | 2014-02-11 16:20:11 +0100 | [diff] [blame] | 96 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 97 | return pmu->boxes[topology_logical_package_id(cpu)]; |
Stephane Eranian | 001e413 | 2014-02-11 16:20:11 +0100 | [diff] [blame] | 98 | } |
| 99 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 100 | u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event) |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 101 | { |
| 102 | u64 count; |
| 103 | |
| 104 | rdmsrl(event->hw.event_base, count); |
| 105 | |
| 106 | return count; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * generic get constraint function for shared match/mask registers. |
| 111 | */ |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 112 | struct event_constraint * |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 113 | uncore_get_constraint(struct intel_uncore_box *box, struct perf_event *event) |
| 114 | { |
| 115 | struct intel_uncore_extra_reg *er; |
| 116 | struct hw_perf_event_extra *reg1 = &event->hw.extra_reg; |
| 117 | struct hw_perf_event_extra *reg2 = &event->hw.branch_reg; |
| 118 | unsigned long flags; |
| 119 | bool ok = false; |
| 120 | |
| 121 | /* |
| 122 | * reg->alloc can be set due to existing state, so for fake box we |
| 123 | * need to ignore this, otherwise we might fail to allocate proper |
| 124 | * fake state for this extra reg constraint. |
| 125 | */ |
| 126 | if (reg1->idx == EXTRA_REG_NONE || |
| 127 | (!uncore_box_is_fake(box) && reg1->alloc)) |
| 128 | return NULL; |
| 129 | |
| 130 | er = &box->shared_regs[reg1->idx]; |
| 131 | raw_spin_lock_irqsave(&er->lock, flags); |
| 132 | if (!atomic_read(&er->ref) || |
| 133 | (er->config1 == reg1->config && er->config2 == reg2->config)) { |
| 134 | atomic_inc(&er->ref); |
| 135 | er->config1 = reg1->config; |
| 136 | er->config2 = reg2->config; |
| 137 | ok = true; |
| 138 | } |
| 139 | raw_spin_unlock_irqrestore(&er->lock, flags); |
| 140 | |
| 141 | if (ok) { |
| 142 | if (!uncore_box_is_fake(box)) |
| 143 | reg1->alloc = 1; |
| 144 | return NULL; |
| 145 | } |
| 146 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 147 | return &uncore_constraint_empty; |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 148 | } |
| 149 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 150 | void uncore_put_constraint(struct intel_uncore_box *box, struct perf_event *event) |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 151 | { |
| 152 | struct intel_uncore_extra_reg *er; |
| 153 | struct hw_perf_event_extra *reg1 = &event->hw.extra_reg; |
| 154 | |
| 155 | /* |
| 156 | * Only put constraint if extra reg was actually allocated. Also |
| 157 | * takes care of event which do not use an extra shared reg. |
| 158 | * |
| 159 | * Also, if this is a fake box we shouldn't touch any event state |
| 160 | * (reg->alloc) and we don't care about leaving inconsistent box |
| 161 | * state either since it will be thrown out. |
| 162 | */ |
| 163 | if (uncore_box_is_fake(box) || !reg1->alloc) |
| 164 | return; |
| 165 | |
| 166 | er = &box->shared_regs[reg1->idx]; |
| 167 | atomic_dec(&er->ref); |
| 168 | reg1->alloc = 0; |
| 169 | } |
| 170 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 171 | u64 uncore_shared_reg_config(struct intel_uncore_box *box, int idx) |
Yan, Zheng | 46bdd90 | 2013-04-16 19:51:06 +0800 | [diff] [blame] | 172 | { |
| 173 | struct intel_uncore_extra_reg *er; |
| 174 | unsigned long flags; |
| 175 | u64 config; |
| 176 | |
| 177 | er = &box->shared_regs[idx]; |
| 178 | |
| 179 | raw_spin_lock_irqsave(&er->lock, flags); |
| 180 | config = er->config; |
| 181 | raw_spin_unlock_irqrestore(&er->lock, flags); |
| 182 | |
| 183 | return config; |
| 184 | } |
| 185 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 186 | static void uncore_assign_hw_event(struct intel_uncore_box *box, |
| 187 | struct perf_event *event, int idx) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 188 | { |
| 189 | struct hw_perf_event *hwc = &event->hw; |
| 190 | |
| 191 | hwc->idx = idx; |
| 192 | hwc->last_tag = ++box->tags[idx]; |
| 193 | |
| 194 | if (hwc->idx == UNCORE_PMC_IDX_FIXED) { |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 195 | hwc->event_base = uncore_fixed_ctr(box); |
| 196 | hwc->config_base = uncore_fixed_ctl(box); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 197 | return; |
| 198 | } |
| 199 | |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 200 | hwc->config_base = uncore_event_ctl(box, hwc->idx); |
| 201 | hwc->event_base = uncore_perf_ctr(box, hwc->idx); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 202 | } |
| 203 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 204 | void uncore_perf_event_update(struct intel_uncore_box *box, struct perf_event *event) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 205 | { |
| 206 | u64 prev_count, new_count, delta; |
| 207 | int shift; |
| 208 | |
| 209 | if (event->hw.idx >= UNCORE_PMC_IDX_FIXED) |
| 210 | shift = 64 - uncore_fixed_ctr_bits(box); |
| 211 | else |
| 212 | shift = 64 - uncore_perf_ctr_bits(box); |
| 213 | |
| 214 | /* the hrtimer might modify the previous event value */ |
| 215 | again: |
| 216 | prev_count = local64_read(&event->hw.prev_count); |
| 217 | new_count = uncore_read_counter(box, event); |
| 218 | if (local64_xchg(&event->hw.prev_count, new_count) != prev_count) |
| 219 | goto again; |
| 220 | |
| 221 | delta = (new_count << shift) - (prev_count << shift); |
| 222 | delta >>= shift; |
| 223 | |
| 224 | local64_add(delta, &event->count); |
| 225 | } |
| 226 | |
| 227 | /* |
| 228 | * The overflow interrupt is unavailable for SandyBridge-EP, is broken |
| 229 | * for SandyBridge. So we use hrtimer to periodically poll the counter |
| 230 | * to avoid overflow. |
| 231 | */ |
| 232 | static enum hrtimer_restart uncore_pmu_hrtimer(struct hrtimer *hrtimer) |
| 233 | { |
| 234 | struct intel_uncore_box *box; |
Stephane Eranian | ced2efb | 2014-02-11 16:20:13 +0100 | [diff] [blame] | 235 | struct perf_event *event; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 236 | unsigned long flags; |
| 237 | int bit; |
| 238 | |
| 239 | box = container_of(hrtimer, struct intel_uncore_box, hrtimer); |
| 240 | if (!box->n_active || box->cpu != smp_processor_id()) |
| 241 | return HRTIMER_NORESTART; |
| 242 | /* |
| 243 | * disable local interrupt to prevent uncore_pmu_event_start/stop |
| 244 | * to interrupt the update process |
| 245 | */ |
| 246 | local_irq_save(flags); |
| 247 | |
Stephane Eranian | ced2efb | 2014-02-11 16:20:13 +0100 | [diff] [blame] | 248 | /* |
| 249 | * handle boxes with an active event list as opposed to active |
| 250 | * counters |
| 251 | */ |
| 252 | list_for_each_entry(event, &box->active_list, active_entry) { |
| 253 | uncore_perf_event_update(box, event); |
| 254 | } |
| 255 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 256 | for_each_set_bit(bit, box->active_mask, UNCORE_PMC_IDX_MAX) |
| 257 | uncore_perf_event_update(box, box->events[bit]); |
| 258 | |
| 259 | local_irq_restore(flags); |
| 260 | |
Stephane Eranian | 79859cc | 2014-02-11 16:20:10 +0100 | [diff] [blame] | 261 | hrtimer_forward_now(hrtimer, ns_to_ktime(box->hrtimer_duration)); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 262 | return HRTIMER_RESTART; |
| 263 | } |
| 264 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 265 | void uncore_pmu_start_hrtimer(struct intel_uncore_box *box) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 266 | { |
Thomas Gleixner | 576b070 | 2015-04-14 21:09:01 +0000 | [diff] [blame] | 267 | hrtimer_start(&box->hrtimer, ns_to_ktime(box->hrtimer_duration), |
| 268 | HRTIMER_MODE_REL_PINNED); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 269 | } |
| 270 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 271 | void uncore_pmu_cancel_hrtimer(struct intel_uncore_box *box) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 272 | { |
| 273 | hrtimer_cancel(&box->hrtimer); |
| 274 | } |
| 275 | |
| 276 | static void uncore_pmu_init_hrtimer(struct intel_uncore_box *box) |
| 277 | { |
| 278 | hrtimer_init(&box->hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); |
| 279 | box->hrtimer.function = uncore_pmu_hrtimer; |
| 280 | } |
| 281 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 282 | static struct intel_uncore_box *uncore_alloc_box(struct intel_uncore_type *type, |
| 283 | int node) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 284 | { |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 285 | int i, size, numshared = type->num_shared_regs ; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 286 | struct intel_uncore_box *box; |
| 287 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 288 | size = sizeof(*box) + numshared * sizeof(struct intel_uncore_extra_reg); |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 289 | |
Yan, Zheng | 73c4427 | 2013-09-17 14:48:13 +0800 | [diff] [blame] | 290 | box = kzalloc_node(size, GFP_KERNEL, node); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 291 | if (!box) |
| 292 | return NULL; |
| 293 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 294 | for (i = 0; i < numshared; i++) |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 295 | raw_spin_lock_init(&box->shared_regs[i].lock); |
| 296 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 297 | uncore_pmu_init_hrtimer(box); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 298 | box->cpu = -1; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 299 | box->pci_phys_id = -1; |
| 300 | box->pkgid = -1; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 301 | |
Stephane Eranian | 79859cc | 2014-02-11 16:20:10 +0100 | [diff] [blame] | 302 | /* set default hrtimer timeout */ |
| 303 | box->hrtimer_duration = UNCORE_PMU_HRTIMER_INTERVAL; |
| 304 | |
Stephane Eranian | ced2efb | 2014-02-11 16:20:13 +0100 | [diff] [blame] | 305 | INIT_LIST_HEAD(&box->active_list); |
| 306 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 307 | return box; |
| 308 | } |
| 309 | |
Jiri Olsa | af91568 | 2014-12-10 21:23:50 +0100 | [diff] [blame] | 310 | /* |
| 311 | * Using uncore_pmu_event_init pmu event_init callback |
| 312 | * as a detection point for uncore events. |
| 313 | */ |
| 314 | static int uncore_pmu_event_init(struct perf_event *event); |
| 315 | |
| 316 | static bool is_uncore_event(struct perf_event *event) |
| 317 | { |
| 318 | return event->pmu->event_init == uncore_pmu_event_init; |
| 319 | } |
| 320 | |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 321 | static int |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 322 | uncore_collect_events(struct intel_uncore_box *box, struct perf_event *leader, |
| 323 | bool dogrp) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 324 | { |
| 325 | struct perf_event *event; |
| 326 | int n, max_count; |
| 327 | |
| 328 | max_count = box->pmu->type->num_counters; |
| 329 | if (box->pmu->type->fixed_ctl) |
| 330 | max_count++; |
| 331 | |
| 332 | if (box->n_events >= max_count) |
| 333 | return -EINVAL; |
| 334 | |
| 335 | n = box->n_events; |
Jiri Olsa | af91568 | 2014-12-10 21:23:50 +0100 | [diff] [blame] | 336 | |
| 337 | if (is_uncore_event(leader)) { |
| 338 | box->event_list[n] = leader; |
| 339 | n++; |
| 340 | } |
| 341 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 342 | if (!dogrp) |
| 343 | return n; |
| 344 | |
| 345 | list_for_each_entry(event, &leader->sibling_list, group_entry) { |
Jiri Olsa | af91568 | 2014-12-10 21:23:50 +0100 | [diff] [blame] | 346 | if (!is_uncore_event(event) || |
| 347 | event->state <= PERF_EVENT_STATE_OFF) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 348 | continue; |
| 349 | |
| 350 | if (n >= max_count) |
| 351 | return -EINVAL; |
| 352 | |
| 353 | box->event_list[n] = event; |
| 354 | n++; |
| 355 | } |
| 356 | return n; |
| 357 | } |
| 358 | |
| 359 | static struct event_constraint * |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 360 | uncore_get_event_constraint(struct intel_uncore_box *box, struct perf_event *event) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 361 | { |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 362 | struct intel_uncore_type *type = box->pmu->type; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 363 | struct event_constraint *c; |
| 364 | |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 365 | if (type->ops->get_constraint) { |
| 366 | c = type->ops->get_constraint(box, event); |
| 367 | if (c) |
| 368 | return c; |
| 369 | } |
| 370 | |
Stephane Eranian | dbc33f7 | 2013-09-09 12:53:50 -0700 | [diff] [blame] | 371 | if (event->attr.config == UNCORE_FIXED_EVENT) |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 372 | return &uncore_constraint_fixed; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 373 | |
| 374 | if (type->constraints) { |
| 375 | for_each_event_constraint(c, type->constraints) { |
| 376 | if ((event->hw.config & c->cmask) == c->code) |
| 377 | return c; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | return &type->unconstrainted; |
| 382 | } |
| 383 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 384 | static void uncore_put_event_constraint(struct intel_uncore_box *box, |
| 385 | struct perf_event *event) |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 386 | { |
| 387 | if (box->pmu->type->ops->put_constraint) |
| 388 | box->pmu->type->ops->put_constraint(box, event); |
| 389 | } |
| 390 | |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 391 | static int uncore_assign_events(struct intel_uncore_box *box, int assign[], int n) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 392 | { |
| 393 | unsigned long used_mask[BITS_TO_LONGS(UNCORE_PMC_IDX_MAX)]; |
Andrew Hunter | 43b45780 | 2013-05-23 11:07:03 -0700 | [diff] [blame] | 394 | struct event_constraint *c; |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 395 | int i, wmin, wmax, ret = 0; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 396 | struct hw_perf_event *hwc; |
| 397 | |
| 398 | bitmap_zero(used_mask, UNCORE_PMC_IDX_MAX); |
| 399 | |
| 400 | for (i = 0, wmin = UNCORE_PMC_IDX_MAX, wmax = 0; i < n; i++) { |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 401 | c = uncore_get_event_constraint(box, box->event_list[i]); |
Peter Zijlstra | b371b59 | 2015-05-21 10:57:13 +0200 | [diff] [blame] | 402 | box->event_constraint[i] = c; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 403 | wmin = min(wmin, c->weight); |
| 404 | wmax = max(wmax, c->weight); |
| 405 | } |
| 406 | |
| 407 | /* fastpath, try to reuse previous register */ |
| 408 | for (i = 0; i < n; i++) { |
| 409 | hwc = &box->event_list[i]->hw; |
Peter Zijlstra | b371b59 | 2015-05-21 10:57:13 +0200 | [diff] [blame] | 410 | c = box->event_constraint[i]; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 411 | |
| 412 | /* never assigned */ |
| 413 | if (hwc->idx == -1) |
| 414 | break; |
| 415 | |
| 416 | /* constraint still honored */ |
| 417 | if (!test_bit(hwc->idx, c->idxmsk)) |
| 418 | break; |
| 419 | |
| 420 | /* not already used */ |
| 421 | if (test_bit(hwc->idx, used_mask)) |
| 422 | break; |
| 423 | |
| 424 | __set_bit(hwc->idx, used_mask); |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 425 | if (assign) |
| 426 | assign[i] = hwc->idx; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 427 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 428 | /* slow path */ |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 429 | if (i != n) |
Peter Zijlstra | b371b59 | 2015-05-21 10:57:13 +0200 | [diff] [blame] | 430 | ret = perf_assign_events(box->event_constraint, n, |
Peter Zijlstra | cc1790c | 2015-05-21 10:57:17 +0200 | [diff] [blame] | 431 | wmin, wmax, n, assign); |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 432 | |
| 433 | if (!assign || ret) { |
| 434 | for (i = 0; i < n; i++) |
| 435 | uncore_put_event_constraint(box, box->event_list[i]); |
| 436 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 437 | return ret ? -EINVAL : 0; |
| 438 | } |
| 439 | |
| 440 | static void uncore_pmu_event_start(struct perf_event *event, int flags) |
| 441 | { |
| 442 | struct intel_uncore_box *box = uncore_event_to_box(event); |
| 443 | int idx = event->hw.idx; |
| 444 | |
| 445 | if (WARN_ON_ONCE(!(event->hw.state & PERF_HES_STOPPED))) |
| 446 | return; |
| 447 | |
| 448 | if (WARN_ON_ONCE(idx == -1 || idx >= UNCORE_PMC_IDX_MAX)) |
| 449 | return; |
| 450 | |
| 451 | event->hw.state = 0; |
| 452 | box->events[idx] = event; |
| 453 | box->n_active++; |
| 454 | __set_bit(idx, box->active_mask); |
| 455 | |
| 456 | local64_set(&event->hw.prev_count, uncore_read_counter(box, event)); |
| 457 | uncore_enable_event(box, event); |
| 458 | |
| 459 | if (box->n_active == 1) { |
| 460 | uncore_enable_box(box); |
| 461 | uncore_pmu_start_hrtimer(box); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | static void uncore_pmu_event_stop(struct perf_event *event, int flags) |
| 466 | { |
| 467 | struct intel_uncore_box *box = uncore_event_to_box(event); |
| 468 | struct hw_perf_event *hwc = &event->hw; |
| 469 | |
| 470 | if (__test_and_clear_bit(hwc->idx, box->active_mask)) { |
| 471 | uncore_disable_event(box, event); |
| 472 | box->n_active--; |
| 473 | box->events[hwc->idx] = NULL; |
| 474 | WARN_ON_ONCE(hwc->state & PERF_HES_STOPPED); |
| 475 | hwc->state |= PERF_HES_STOPPED; |
| 476 | |
| 477 | if (box->n_active == 0) { |
| 478 | uncore_disable_box(box); |
| 479 | uncore_pmu_cancel_hrtimer(box); |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | if ((flags & PERF_EF_UPDATE) && !(hwc->state & PERF_HES_UPTODATE)) { |
| 484 | /* |
| 485 | * Drain the remaining delta count out of a event |
| 486 | * that we are disabling: |
| 487 | */ |
| 488 | uncore_perf_event_update(box, event); |
| 489 | hwc->state |= PERF_HES_UPTODATE; |
| 490 | } |
| 491 | } |
| 492 | |
| 493 | static int uncore_pmu_event_add(struct perf_event *event, int flags) |
| 494 | { |
| 495 | struct intel_uncore_box *box = uncore_event_to_box(event); |
| 496 | struct hw_perf_event *hwc = &event->hw; |
| 497 | int assign[UNCORE_PMC_IDX_MAX]; |
| 498 | int i, n, ret; |
| 499 | |
| 500 | if (!box) |
| 501 | return -ENODEV; |
| 502 | |
| 503 | ret = n = uncore_collect_events(box, event, false); |
| 504 | if (ret < 0) |
| 505 | return ret; |
| 506 | |
| 507 | hwc->state = PERF_HES_UPTODATE | PERF_HES_STOPPED; |
| 508 | if (!(flags & PERF_EF_START)) |
| 509 | hwc->state |= PERF_HES_ARCH; |
| 510 | |
| 511 | ret = uncore_assign_events(box, assign, n); |
| 512 | if (ret) |
| 513 | return ret; |
| 514 | |
| 515 | /* save events moving to new counters */ |
| 516 | for (i = 0; i < box->n_events; i++) { |
| 517 | event = box->event_list[i]; |
| 518 | hwc = &event->hw; |
| 519 | |
| 520 | if (hwc->idx == assign[i] && |
| 521 | hwc->last_tag == box->tags[assign[i]]) |
| 522 | continue; |
| 523 | /* |
| 524 | * Ensure we don't accidentally enable a stopped |
| 525 | * counter simply because we rescheduled. |
| 526 | */ |
| 527 | if (hwc->state & PERF_HES_STOPPED) |
| 528 | hwc->state |= PERF_HES_ARCH; |
| 529 | |
| 530 | uncore_pmu_event_stop(event, PERF_EF_UPDATE); |
| 531 | } |
| 532 | |
| 533 | /* reprogram moved events into new counters */ |
| 534 | for (i = 0; i < n; i++) { |
| 535 | event = box->event_list[i]; |
| 536 | hwc = &event->hw; |
| 537 | |
| 538 | if (hwc->idx != assign[i] || |
| 539 | hwc->last_tag != box->tags[assign[i]]) |
| 540 | uncore_assign_hw_event(box, event, assign[i]); |
| 541 | else if (i < box->n_events) |
| 542 | continue; |
| 543 | |
| 544 | if (hwc->state & PERF_HES_ARCH) |
| 545 | continue; |
| 546 | |
| 547 | uncore_pmu_event_start(event, 0); |
| 548 | } |
| 549 | box->n_events = n; |
| 550 | |
| 551 | return 0; |
| 552 | } |
| 553 | |
| 554 | static void uncore_pmu_event_del(struct perf_event *event, int flags) |
| 555 | { |
| 556 | struct intel_uncore_box *box = uncore_event_to_box(event); |
| 557 | int i; |
| 558 | |
| 559 | uncore_pmu_event_stop(event, PERF_EF_UPDATE); |
| 560 | |
| 561 | for (i = 0; i < box->n_events; i++) { |
| 562 | if (event == box->event_list[i]) { |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 563 | uncore_put_event_constraint(box, event); |
| 564 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 565 | for (++i; i < box->n_events; i++) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 566 | box->event_list[i - 1] = box->event_list[i]; |
| 567 | |
| 568 | --box->n_events; |
| 569 | break; |
| 570 | } |
| 571 | } |
| 572 | |
| 573 | event->hw.idx = -1; |
| 574 | event->hw.last_tag = ~0ULL; |
| 575 | } |
| 576 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 577 | void uncore_pmu_event_read(struct perf_event *event) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 578 | { |
| 579 | struct intel_uncore_box *box = uncore_event_to_box(event); |
| 580 | uncore_perf_event_update(box, event); |
| 581 | } |
| 582 | |
| 583 | /* |
| 584 | * validation ensures the group can be loaded onto the |
| 585 | * PMU if it was the only group available. |
| 586 | */ |
| 587 | static int uncore_validate_group(struct intel_uncore_pmu *pmu, |
| 588 | struct perf_event *event) |
| 589 | { |
| 590 | struct perf_event *leader = event->group_leader; |
| 591 | struct intel_uncore_box *fake_box; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 592 | int ret = -EINVAL, n; |
| 593 | |
Yan, Zheng | 73c4427 | 2013-09-17 14:48:13 +0800 | [diff] [blame] | 594 | fake_box = uncore_alloc_box(pmu->type, NUMA_NO_NODE); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 595 | if (!fake_box) |
| 596 | return -ENOMEM; |
| 597 | |
| 598 | fake_box->pmu = pmu; |
| 599 | /* |
| 600 | * the event is not yet connected with its |
| 601 | * siblings therefore we must first collect |
| 602 | * existing siblings, then add the new event |
| 603 | * before we can simulate the scheduling |
| 604 | */ |
| 605 | n = uncore_collect_events(fake_box, leader, true); |
| 606 | if (n < 0) |
| 607 | goto out; |
| 608 | |
| 609 | fake_box->n_events = n; |
| 610 | n = uncore_collect_events(fake_box, event, false); |
| 611 | if (n < 0) |
| 612 | goto out; |
| 613 | |
| 614 | fake_box->n_events = n; |
| 615 | |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 616 | ret = uncore_assign_events(fake_box, NULL, n); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 617 | out: |
| 618 | kfree(fake_box); |
| 619 | return ret; |
| 620 | } |
| 621 | |
Yan, Zheng | 46bdd90 | 2013-04-16 19:51:06 +0800 | [diff] [blame] | 622 | static int uncore_pmu_event_init(struct perf_event *event) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 623 | { |
| 624 | struct intel_uncore_pmu *pmu; |
| 625 | struct intel_uncore_box *box; |
| 626 | struct hw_perf_event *hwc = &event->hw; |
| 627 | int ret; |
| 628 | |
| 629 | if (event->attr.type != event->pmu->type) |
| 630 | return -ENOENT; |
| 631 | |
| 632 | pmu = uncore_event_to_pmu(event); |
| 633 | /* no device found for this pmu */ |
| 634 | if (pmu->func_id < 0) |
| 635 | return -ENOENT; |
| 636 | |
| 637 | /* |
| 638 | * Uncore PMU does measure at all privilege level all the time. |
| 639 | * So it doesn't make sense to specify any exclude bits. |
| 640 | */ |
| 641 | if (event->attr.exclude_user || event->attr.exclude_kernel || |
| 642 | event->attr.exclude_hv || event->attr.exclude_idle) |
| 643 | return -EINVAL; |
| 644 | |
| 645 | /* Sampling not supported yet */ |
| 646 | if (hwc->sample_period) |
| 647 | return -EINVAL; |
| 648 | |
| 649 | /* |
| 650 | * Place all uncore events for a particular physical package |
| 651 | * onto a single cpu |
| 652 | */ |
| 653 | if (event->cpu < 0) |
| 654 | return -EINVAL; |
| 655 | box = uncore_pmu_to_box(pmu, event->cpu); |
| 656 | if (!box || box->cpu < 0) |
| 657 | return -EINVAL; |
| 658 | event->cpu = box->cpu; |
Thomas Gleixner | 1f2569f | 2016-02-22 22:19:14 +0000 | [diff] [blame] | 659 | event->pmu_private = box; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 660 | |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 661 | event->hw.idx = -1; |
| 662 | event->hw.last_tag = ~0ULL; |
| 663 | event->hw.extra_reg.idx = EXTRA_REG_NONE; |
Yan, Zheng | ebb6cc0 | 2012-08-06 13:11:21 +0800 | [diff] [blame] | 664 | event->hw.branch_reg.idx = EXTRA_REG_NONE; |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 665 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 666 | if (event->attr.config == UNCORE_FIXED_EVENT) { |
| 667 | /* no fixed counter */ |
| 668 | if (!pmu->type->fixed_ctl) |
| 669 | return -EINVAL; |
| 670 | /* |
| 671 | * if there is only one fixed counter, only the first pmu |
| 672 | * can access the fixed counter |
| 673 | */ |
| 674 | if (pmu->type->single_fixed && pmu->pmu_idx > 0) |
| 675 | return -EINVAL; |
Stephane Eranian | dbc33f7 | 2013-09-09 12:53:50 -0700 | [diff] [blame] | 676 | |
| 677 | /* fixed counters have event field hardcoded to zero */ |
| 678 | hwc->config = 0ULL; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 679 | } else { |
| 680 | hwc->config = event->attr.config & pmu->type->event_mask; |
Yan, Zheng | 6a67943 | 2012-07-04 14:00:15 +0800 | [diff] [blame] | 681 | if (pmu->type->ops->hw_config) { |
| 682 | ret = pmu->type->ops->hw_config(box, event); |
| 683 | if (ret) |
| 684 | return ret; |
| 685 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 686 | } |
| 687 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 688 | if (event->group_leader != event) |
| 689 | ret = uncore_validate_group(pmu, event); |
| 690 | else |
| 691 | ret = 0; |
| 692 | |
| 693 | return ret; |
| 694 | } |
| 695 | |
Yan, Zheng | 314d9f6 | 2012-09-10 15:53:49 +0800 | [diff] [blame] | 696 | static ssize_t uncore_get_attr_cpumask(struct device *dev, |
| 697 | struct device_attribute *attr, char *buf) |
| 698 | { |
Sudeep Holla | 5aaba36 | 2014-09-30 14:48:22 +0100 | [diff] [blame] | 699 | return cpumap_print_to_pagebuf(true, buf, &uncore_cpu_mask); |
Yan, Zheng | 314d9f6 | 2012-09-10 15:53:49 +0800 | [diff] [blame] | 700 | } |
| 701 | |
| 702 | static DEVICE_ATTR(cpumask, S_IRUGO, uncore_get_attr_cpumask, NULL); |
| 703 | |
| 704 | static struct attribute *uncore_pmu_attrs[] = { |
| 705 | &dev_attr_cpumask.attr, |
| 706 | NULL, |
| 707 | }; |
| 708 | |
| 709 | static struct attribute_group uncore_pmu_attr_group = { |
| 710 | .attrs = uncore_pmu_attrs, |
| 711 | }; |
| 712 | |
Andi Kleen | a08b676 | 2014-08-29 10:20:58 -0700 | [diff] [blame] | 713 | static int uncore_pmu_register(struct intel_uncore_pmu *pmu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 714 | { |
| 715 | int ret; |
| 716 | |
Stephane Eranian | d64b25b | 2014-02-11 16:20:08 +0100 | [diff] [blame] | 717 | if (!pmu->type->pmu) { |
| 718 | pmu->pmu = (struct pmu) { |
| 719 | .attr_groups = pmu->type->attr_groups, |
| 720 | .task_ctx_nr = perf_invalid_context, |
| 721 | .event_init = uncore_pmu_event_init, |
| 722 | .add = uncore_pmu_event_add, |
| 723 | .del = uncore_pmu_event_del, |
| 724 | .start = uncore_pmu_event_start, |
| 725 | .stop = uncore_pmu_event_stop, |
| 726 | .read = uncore_pmu_event_read, |
| 727 | }; |
| 728 | } else { |
| 729 | pmu->pmu = *pmu->type->pmu; |
| 730 | pmu->pmu.attr_groups = pmu->type->attr_groups; |
| 731 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 732 | |
| 733 | if (pmu->type->num_boxes == 1) { |
| 734 | if (strlen(pmu->type->name) > 0) |
| 735 | sprintf(pmu->name, "uncore_%s", pmu->type->name); |
| 736 | else |
| 737 | sprintf(pmu->name, "uncore"); |
| 738 | } else { |
| 739 | sprintf(pmu->name, "uncore_%s_%d", pmu->type->name, |
| 740 | pmu->pmu_idx); |
| 741 | } |
| 742 | |
| 743 | ret = perf_pmu_register(&pmu->pmu, pmu->name, -1); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 744 | if (!ret) |
| 745 | pmu->registered = true; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 746 | return ret; |
| 747 | } |
| 748 | |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 749 | static void uncore_pmu_unregister(struct intel_uncore_pmu *pmu) |
| 750 | { |
| 751 | if (!pmu->registered) |
| 752 | return; |
| 753 | perf_pmu_unregister(&pmu->pmu); |
| 754 | pmu->registered = false; |
| 755 | } |
| 756 | |
Thomas Gleixner | 7b672d6 | 2016-02-22 22:19:17 +0000 | [diff] [blame^] | 757 | static void __init __uncore_exit_boxes(struct intel_uncore_type *type, int cpu) |
| 758 | { |
| 759 | struct intel_uncore_pmu *pmu = type->pmus; |
| 760 | struct intel_uncore_box *box; |
| 761 | int i, pkg; |
| 762 | |
| 763 | if (pmu) { |
| 764 | pkg = topology_physical_package_id(cpu); |
| 765 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
| 766 | box = pmu->boxes[pkg]; |
| 767 | if (box) |
| 768 | uncore_box_exit(box); |
| 769 | } |
| 770 | } |
| 771 | } |
| 772 | |
| 773 | static void __init uncore_exit_boxes(void *dummy) |
| 774 | { |
| 775 | struct intel_uncore_type **types; |
| 776 | |
| 777 | for (types = uncore_msr_uncores; *types; types++) |
| 778 | __uncore_exit_boxes(*types++, smp_processor_id()); |
| 779 | } |
| 780 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 781 | static void uncore_free_boxes(struct intel_uncore_pmu *pmu) |
| 782 | { |
| 783 | int pkg; |
| 784 | |
| 785 | for (pkg = 0; pkg < max_packages; pkg++) |
| 786 | kfree(pmu->boxes[pkg]); |
| 787 | kfree(pmu->boxes); |
| 788 | } |
| 789 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 790 | static void __init uncore_type_exit(struct intel_uncore_type *type) |
| 791 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 792 | struct intel_uncore_pmu *pmu = type->pmus; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 793 | int i; |
| 794 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 795 | if (pmu) { |
| 796 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
| 797 | uncore_pmu_unregister(pmu); |
| 798 | uncore_free_boxes(pmu); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 799 | } |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 800 | kfree(type->pmus); |
| 801 | type->pmus = NULL; |
| 802 | } |
Yan, Zheng | 314d9f6 | 2012-09-10 15:53:49 +0800 | [diff] [blame] | 803 | kfree(type->events_group); |
| 804 | type->events_group = NULL; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 805 | } |
| 806 | |
Borislav Petkov | cffa59b | 2012-08-02 12:55:27 +0200 | [diff] [blame] | 807 | static void __init uncore_types_exit(struct intel_uncore_type **types) |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 808 | { |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 809 | for (; *types; types++) |
| 810 | uncore_type_exit(*types); |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 811 | } |
| 812 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 813 | static int __init uncore_type_init(struct intel_uncore_type *type, bool setid) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 814 | { |
| 815 | struct intel_uncore_pmu *pmus; |
Jan-Simon Möller | 1b0dac2 | 2013-04-30 12:02:33 +0200 | [diff] [blame] | 816 | struct attribute_group *attr_group; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 817 | struct attribute **attrs; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 818 | size_t size; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 819 | int i, j; |
| 820 | |
| 821 | pmus = kzalloc(sizeof(*pmus) * type->num_boxes, GFP_KERNEL); |
| 822 | if (!pmus) |
| 823 | return -ENOMEM; |
| 824 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 825 | size = max_packages * sizeof(struct intel_uncore_box *); |
Dave Jones | b7b4839 | 2014-03-06 12:20:28 -0500 | [diff] [blame] | 826 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 827 | for (i = 0; i < type->num_boxes; i++) { |
| 828 | pmus[i].func_id = setid ? i : -1; |
| 829 | pmus[i].pmu_idx = i; |
| 830 | pmus[i].type = type; |
| 831 | pmus[i].boxes = kzalloc(size, GFP_KERNEL); |
| 832 | if (!pmus[i].boxes) |
| 833 | return -ENOMEM; |
| 834 | } |
| 835 | |
| 836 | type->pmus = pmus; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 837 | type->unconstrainted = (struct event_constraint) |
| 838 | __EVENT_CONSTRAINT(0, (1ULL << type->num_counters) - 1, |
Stephane Eranian | 9fac2cf | 2013-01-24 16:10:27 +0100 | [diff] [blame] | 839 | 0, type->num_counters, 0, 0); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 840 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 841 | if (type->event_descs) { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 842 | for (i = 0; type->event_descs[i].attr.attr.name; i++); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 843 | |
Jan-Simon Möller | 1b0dac2 | 2013-04-30 12:02:33 +0200 | [diff] [blame] | 844 | attr_group = kzalloc(sizeof(struct attribute *) * (i + 1) + |
| 845 | sizeof(*attr_group), GFP_KERNEL); |
| 846 | if (!attr_group) |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 847 | return -ENOMEM; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 848 | |
Jan-Simon Möller | 1b0dac2 | 2013-04-30 12:02:33 +0200 | [diff] [blame] | 849 | attrs = (struct attribute **)(attr_group + 1); |
| 850 | attr_group->name = "events"; |
| 851 | attr_group->attrs = attrs; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 852 | |
| 853 | for (j = 0; j < i; j++) |
| 854 | attrs[j] = &type->event_descs[j].attr.attr; |
| 855 | |
Jan-Simon Möller | 1b0dac2 | 2013-04-30 12:02:33 +0200 | [diff] [blame] | 856 | type->events_group = attr_group; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 857 | } |
| 858 | |
Yan, Zheng | 314d9f6 | 2012-09-10 15:53:49 +0800 | [diff] [blame] | 859 | type->pmu_group = &uncore_pmu_attr_group; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 860 | return 0; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 861 | } |
| 862 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 863 | static int __init |
| 864 | uncore_types_init(struct intel_uncore_type **types, bool setid) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 865 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 866 | int ret; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 867 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 868 | for (; *types; types++) { |
| 869 | ret = uncore_type_init(*types, setid); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 870 | if (ret) |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 871 | return ret; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 872 | } |
| 873 | return 0; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 874 | } |
| 875 | |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 876 | /* |
| 877 | * add a pci uncore device |
| 878 | */ |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 879 | static int uncore_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 880 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 881 | struct intel_uncore_type *type; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 882 | struct intel_uncore_pmu *pmu; |
| 883 | struct intel_uncore_box *box; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 884 | int phys_id, pkg, ret; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 885 | |
Taku Izumi | 712df65 | 2015-09-24 21:10:21 +0900 | [diff] [blame] | 886 | phys_id = uncore_pcibus_to_physid(pdev->bus); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 887 | if (phys_id < 0) |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 888 | return -ENODEV; |
| 889 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 890 | pkg = topology_phys_to_logical_pkg(phys_id); |
| 891 | if (WARN_ON_ONCE(pkg < 0)) |
| 892 | return -EINVAL; |
| 893 | |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 894 | if (UNCORE_PCI_DEV_TYPE(id->driver_data) == UNCORE_EXTRA_PCI_DEV) { |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 895 | int idx = UNCORE_PCI_DEV_IDX(id->driver_data); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 896 | |
| 897 | uncore_extra_pci_dev[pkg].dev[idx] = pdev; |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 898 | pci_set_drvdata(pdev, NULL); |
| 899 | return 0; |
| 900 | } |
| 901 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 902 | type = uncore_pci_uncores[UNCORE_PCI_DEV_TYPE(id->driver_data)]; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 903 | /* |
| 904 | * for performance monitoring unit with multiple boxes, |
| 905 | * each box has a different function id. |
| 906 | */ |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 907 | pmu = &type->pmus[UNCORE_PCI_DEV_IDX(id->driver_data)]; |
Harish Chegondi | 77af003 | 2015-12-07 14:32:32 -0800 | [diff] [blame] | 908 | /* Knights Landing uses a common PCI device ID for multiple instances of |
| 909 | * an uncore PMU device type. There is only one entry per device type in |
| 910 | * the knl_uncore_pci_ids table inspite of multiple devices present for |
| 911 | * some device types. Hence PCI device idx would be 0 for all devices. |
| 912 | * So increment pmu pointer to point to an unused array element. |
| 913 | */ |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 914 | if (boot_cpu_data.x86_model == 87) { |
Harish Chegondi | 77af003 | 2015-12-07 14:32:32 -0800 | [diff] [blame] | 915 | while (pmu->func_id >= 0) |
| 916 | pmu++; |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 917 | } |
| 918 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 919 | if (WARN_ON_ONCE(pmu->boxes[pkg] != NULL)) |
| 920 | return -EINVAL; |
| 921 | |
| 922 | box = uncore_alloc_box(type, NUMA_NO_NODE); |
| 923 | if (!box) |
| 924 | return -ENOMEM; |
| 925 | |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 926 | if (pmu->func_id < 0) |
| 927 | pmu->func_id = pdev->devfn; |
| 928 | else |
| 929 | WARN_ON_ONCE(pmu->func_id != pdev->devfn); |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 930 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 931 | atomic_inc(&box->refcnt); |
| 932 | box->pci_phys_id = phys_id; |
| 933 | box->pkgid = pkg; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 934 | box->pci_dev = pdev; |
| 935 | box->pmu = pmu; |
Ingo Molnar | 15c1247 | 2015-06-09 11:40:28 +0200 | [diff] [blame] | 936 | uncore_box_init(box); |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 937 | pci_set_drvdata(pdev, box); |
| 938 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 939 | pmu->boxes[pkg] = box; |
| 940 | if (atomic_inc_return(&pmu->activeboxes) > 1) |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 941 | return 0; |
| 942 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 943 | /* First active box registers the pmu */ |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 944 | ret = uncore_pmu_register(pmu); |
| 945 | if (ret) { |
| 946 | pci_set_drvdata(pdev, NULL); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 947 | pmu->boxes[pkg] = NULL; |
Thomas Gleixner | a46195f | 2016-02-22 22:19:11 +0000 | [diff] [blame] | 948 | uncore_box_exit(box); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 949 | kfree(box); |
| 950 | } |
| 951 | return ret; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 952 | } |
| 953 | |
Robert Richter | 357398e | 2012-06-20 18:39:27 +0200 | [diff] [blame] | 954 | static void uncore_pci_remove(struct pci_dev *pdev) |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 955 | { |
| 956 | struct intel_uncore_box *box = pci_get_drvdata(pdev); |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 957 | struct intel_uncore_pmu *pmu; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 958 | int i, phys_id, pkg; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 959 | |
Taku Izumi | 712df65 | 2015-09-24 21:10:21 +0900 | [diff] [blame] | 960 | phys_id = uncore_pcibus_to_physid(pdev->bus); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 961 | pkg = topology_phys_to_logical_pkg(phys_id); |
| 962 | |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 963 | box = pci_get_drvdata(pdev); |
| 964 | if (!box) { |
| 965 | for (i = 0; i < UNCORE_EXTRA_PCI_DEV_MAX; i++) { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 966 | if (uncore_extra_pci_dev[pkg].dev[i] == pdev) { |
| 967 | uncore_extra_pci_dev[pkg].dev[i] = NULL; |
Yan, Zheng | 899396c | 2013-08-07 14:17:23 +0800 | [diff] [blame] | 968 | break; |
| 969 | } |
| 970 | } |
| 971 | WARN_ON_ONCE(i >= UNCORE_EXTRA_PCI_DEV_MAX); |
| 972 | return; |
| 973 | } |
| 974 | |
| 975 | pmu = box->pmu; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 976 | if (WARN_ON_ONCE(phys_id != box->pci_phys_id)) |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 977 | return; |
| 978 | |
Yan, Zheng | e850f9c | 2013-04-16 19:51:07 +0800 | [diff] [blame] | 979 | pci_set_drvdata(pdev, NULL); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 980 | pmu->boxes[pkg] = NULL; |
| 981 | if (atomic_dec_return(&pmu->activeboxes) == 0) |
| 982 | uncore_pmu_unregister(pmu); |
Thomas Gleixner | a46195f | 2016-02-22 22:19:11 +0000 | [diff] [blame] | 983 | uncore_box_exit(box); |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 984 | kfree(box); |
| 985 | } |
| 986 | |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 987 | static int __init uncore_pci_init(void) |
| 988 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 989 | size_t size; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 990 | int ret; |
| 991 | |
| 992 | switch (boot_cpu_data.x86_model) { |
Yan, Zheng | 7c94ee2 | 2012-06-15 14:31:37 +0800 | [diff] [blame] | 993 | case 45: /* Sandy Bridge-EP */ |
Yan, Zheng | 8268fdf | 2014-07-30 15:22:14 +0800 | [diff] [blame] | 994 | ret = snbep_uncore_pci_init(); |
Yan, Zheng | 7c94ee2 | 2012-06-15 14:31:37 +0800 | [diff] [blame] | 995 | break; |
Peter Zijlstra | ddcd097 | 2014-08-12 09:15:25 +0200 | [diff] [blame] | 996 | case 62: /* Ivy Bridge-EP */ |
| 997 | ret = ivbep_uncore_pci_init(); |
Yan, Zheng | e850f9c | 2013-04-16 19:51:07 +0800 | [diff] [blame] | 998 | break; |
Yan, Zheng | e735b9d | 2014-09-04 16:08:26 -0700 | [diff] [blame] | 999 | case 63: /* Haswell-EP */ |
| 1000 | ret = hswep_uncore_pci_init(); |
| 1001 | break; |
Kan Liang | d6980ef | 2015-12-03 16:00:11 -0500 | [diff] [blame] | 1002 | case 79: /* BDX-EP */ |
Kan Liang | 070e988 | 2015-07-02 08:12:52 -0400 | [diff] [blame] | 1003 | case 86: /* BDX-DE */ |
| 1004 | ret = bdx_uncore_pci_init(); |
| 1005 | break; |
Stephane Eranian | b9e1ab6 | 2014-02-11 16:20:12 +0100 | [diff] [blame] | 1006 | case 42: /* Sandy Bridge */ |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1007 | ret = snb_uncore_pci_init(); |
Stephane Eranian | b9e1ab6 | 2014-02-11 16:20:12 +0100 | [diff] [blame] | 1008 | break; |
| 1009 | case 58: /* Ivy Bridge */ |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1010 | ret = ivb_uncore_pci_init(); |
Stephane Eranian | b9e1ab6 | 2014-02-11 16:20:12 +0100 | [diff] [blame] | 1011 | break; |
| 1012 | case 60: /* Haswell */ |
| 1013 | case 69: /* Haswell Celeron */ |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1014 | ret = hsw_uncore_pci_init(); |
Stephane Eranian | b9e1ab6 | 2014-02-11 16:20:12 +0100 | [diff] [blame] | 1015 | break; |
Stephane Eranian | a41f3c8 | 2015-04-23 08:56:42 +0200 | [diff] [blame] | 1016 | case 61: /* Broadwell */ |
| 1017 | ret = bdw_uncore_pci_init(); |
| 1018 | break; |
Harish Chegondi | 77af003 | 2015-12-07 14:32:32 -0800 | [diff] [blame] | 1019 | case 87: /* Knights Landing */ |
| 1020 | ret = knl_uncore_pci_init(); |
| 1021 | break; |
Stephane Eranian | 0e1eb0a | 2016-01-07 08:25:46 +0100 | [diff] [blame] | 1022 | case 94: /* SkyLake */ |
| 1023 | ret = skl_uncore_pci_init(); |
| 1024 | break; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1025 | default: |
| 1026 | return 0; |
| 1027 | } |
| 1028 | |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1029 | if (ret) |
| 1030 | return ret; |
| 1031 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1032 | size = max_packages * sizeof(struct pci_extra_dev); |
| 1033 | uncore_extra_pci_dev = kzalloc(size, GFP_KERNEL); |
| 1034 | if (!uncore_extra_pci_dev) { |
| 1035 | ret = -ENOMEM; |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1036 | goto err; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1037 | } |
| 1038 | |
| 1039 | ret = uncore_types_init(uncore_pci_uncores, false); |
| 1040 | if (ret) |
| 1041 | goto errtype; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1042 | |
| 1043 | uncore_pci_driver->probe = uncore_pci_probe; |
| 1044 | uncore_pci_driver->remove = uncore_pci_remove; |
| 1045 | |
| 1046 | ret = pci_register_driver(uncore_pci_driver); |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1047 | if (ret) |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1048 | goto errtype; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1049 | |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1050 | pcidrv_registered = true; |
| 1051 | return 0; |
| 1052 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1053 | errtype: |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1054 | uncore_types_exit(uncore_pci_uncores); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1055 | kfree(uncore_extra_pci_dev); |
| 1056 | uncore_extra_pci_dev = NULL; |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1057 | uncore_free_pcibus_map(); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1058 | err: |
| 1059 | uncore_pci_uncores = empty_uncore; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1060 | return ret; |
| 1061 | } |
| 1062 | |
| 1063 | static void __init uncore_pci_exit(void) |
| 1064 | { |
| 1065 | if (pcidrv_registered) { |
| 1066 | pcidrv_registered = false; |
| 1067 | pci_unregister_driver(uncore_pci_driver); |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 1068 | uncore_types_exit(uncore_pci_uncores); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1069 | kfree(uncore_extra_pci_dev); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1070 | uncore_free_pcibus_map(); |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1071 | } |
| 1072 | } |
| 1073 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 1074 | static void uncore_cpu_dying(int cpu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1075 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1076 | struct intel_uncore_type *type, **types = uncore_msr_uncores; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1077 | struct intel_uncore_pmu *pmu; |
| 1078 | struct intel_uncore_box *box; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1079 | int i, pkg; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1080 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1081 | pkg = topology_logical_package_id(cpu); |
| 1082 | for (; *types; types++) { |
| 1083 | type = *types; |
| 1084 | pmu = type->pmus; |
| 1085 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
| 1086 | box = pmu->boxes[pkg]; |
| 1087 | if (box && atomic_dec_return(&box->refcnt) == 0) |
Thomas Gleixner | a46195f | 2016-02-22 22:19:11 +0000 | [diff] [blame] | 1088 | uncore_box_exit(box); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1089 | } |
| 1090 | } |
| 1091 | } |
| 1092 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1093 | static void uncore_cpu_starting(int cpu, bool init) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1094 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1095 | struct intel_uncore_type *type, **types = uncore_msr_uncores; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1096 | struct intel_uncore_pmu *pmu; |
| 1097 | struct intel_uncore_box *box; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1098 | int i, pkg, ncpus = 1; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1099 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1100 | if (init) { |
| 1101 | /* |
| 1102 | * On init we get the number of online cpus in the package |
| 1103 | * and set refcount for all of them. |
| 1104 | */ |
| 1105 | ncpus = cpumask_weight(topology_core_cpumask(cpu)); |
| 1106 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1107 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1108 | pkg = topology_logical_package_id(cpu); |
| 1109 | for (; *types; types++) { |
| 1110 | type = *types; |
| 1111 | pmu = type->pmus; |
| 1112 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
| 1113 | box = pmu->boxes[pkg]; |
| 1114 | if (!box) |
| 1115 | continue; |
| 1116 | /* The first cpu on a package activates the box */ |
| 1117 | if (atomic_add_return(ncpus, &box->refcnt) == ncpus) |
| 1118 | uncore_box_init(box); |
| 1119 | } |
| 1120 | } |
| 1121 | } |
| 1122 | |
| 1123 | static int uncore_cpu_prepare(int cpu) |
| 1124 | { |
| 1125 | struct intel_uncore_type *type, **types = uncore_msr_uncores; |
| 1126 | struct intel_uncore_pmu *pmu; |
| 1127 | struct intel_uncore_box *box; |
| 1128 | int i, pkg; |
| 1129 | |
| 1130 | pkg = topology_logical_package_id(cpu); |
| 1131 | for (; *types; types++) { |
| 1132 | type = *types; |
| 1133 | pmu = type->pmus; |
| 1134 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
| 1135 | if (pmu->boxes[pkg]) |
| 1136 | continue; |
| 1137 | /* First cpu of a package allocates the box */ |
Yan, Zheng | 73c4427 | 2013-09-17 14:48:13 +0800 | [diff] [blame] | 1138 | box = uncore_alloc_box(type, cpu_to_node(cpu)); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1139 | if (!box) |
| 1140 | return -ENOMEM; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1141 | box->pmu = pmu; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1142 | box->pkgid = pkg; |
| 1143 | pmu->boxes[pkg] = box; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1144 | } |
| 1145 | } |
| 1146 | return 0; |
| 1147 | } |
| 1148 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1149 | static void uncore_change_type_ctx(struct intel_uncore_type *type, int old_cpu, |
| 1150 | int new_cpu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1151 | { |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1152 | struct intel_uncore_pmu *pmu = type->pmus; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1153 | struct intel_uncore_box *box; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1154 | int i, pkg; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1155 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1156 | pkg = topology_logical_package_id(old_cpu < 0 ? new_cpu : old_cpu); |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1157 | for (i = 0; i < type->num_boxes; i++, pmu++) { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1158 | box = pmu->boxes[pkg]; |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1159 | if (!box) |
| 1160 | continue; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1161 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1162 | if (old_cpu < 0) { |
| 1163 | WARN_ON_ONCE(box->cpu != -1); |
| 1164 | box->cpu = new_cpu; |
| 1165 | continue; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1166 | } |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1167 | |
| 1168 | WARN_ON_ONCE(box->cpu != old_cpu); |
| 1169 | box->cpu = -1; |
| 1170 | if (new_cpu < 0) |
| 1171 | continue; |
| 1172 | |
| 1173 | uncore_pmu_cancel_hrtimer(box); |
| 1174 | perf_pmu_migrate_context(&pmu->pmu, old_cpu, new_cpu); |
| 1175 | box->cpu = new_cpu; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1176 | } |
| 1177 | } |
| 1178 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1179 | static void uncore_change_context(struct intel_uncore_type **uncores, |
| 1180 | int old_cpu, int new_cpu) |
| 1181 | { |
| 1182 | for (; *uncores; uncores++) |
| 1183 | uncore_change_type_ctx(*uncores, old_cpu, new_cpu); |
| 1184 | } |
| 1185 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 1186 | static void uncore_event_exit_cpu(int cpu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1187 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1188 | int target; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1189 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1190 | /* Check if exiting cpu is used for collecting uncore events */ |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1191 | if (!cpumask_test_and_clear_cpu(cpu, &uncore_cpu_mask)) |
| 1192 | return; |
| 1193 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1194 | /* Find a new cpu to collect uncore events */ |
| 1195 | target = cpumask_any_but(topology_core_cpumask(cpu), cpu); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1196 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1197 | /* Migrate uncore events to the new target */ |
| 1198 | if (target < nr_cpu_ids) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1199 | cpumask_set_cpu(target, &uncore_cpu_mask); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1200 | else |
| 1201 | target = -1; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1202 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 1203 | uncore_change_context(uncore_msr_uncores, cpu, target); |
| 1204 | uncore_change_context(uncore_pci_uncores, cpu, target); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1205 | } |
| 1206 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 1207 | static void uncore_event_init_cpu(int cpu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1208 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1209 | int target; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1210 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1211 | /* |
| 1212 | * Check if there is an online cpu in the package |
| 1213 | * which collects uncore events already. |
| 1214 | */ |
| 1215 | target = cpumask_any_and(&uncore_cpu_mask, topology_core_cpumask(cpu)); |
| 1216 | if (target < nr_cpu_ids) |
| 1217 | return; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1218 | |
| 1219 | cpumask_set_cpu(cpu, &uncore_cpu_mask); |
| 1220 | |
Yan, Zheng | 514b234 | 2014-07-30 15:22:12 +0800 | [diff] [blame] | 1221 | uncore_change_context(uncore_msr_uncores, -1, cpu); |
| 1222 | uncore_change_context(uncore_pci_uncores, -1, cpu); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1223 | } |
| 1224 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 1225 | static int uncore_cpu_notifier(struct notifier_block *self, |
| 1226 | unsigned long action, void *hcpu) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1227 | { |
| 1228 | unsigned int cpu = (long)hcpu; |
| 1229 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1230 | switch (action & ~CPU_TASKS_FROZEN) { |
| 1231 | case CPU_UP_PREPARE: |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1232 | return notifier_from_errno(uncore_cpu_prepare(cpu)); |
| 1233 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1234 | case CPU_STARTING: |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1235 | uncore_cpu_starting(cpu, false); |
| 1236 | case CPU_DOWN_FAILED: |
| 1237 | uncore_event_init_cpu(cpu); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1238 | break; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1239 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1240 | case CPU_UP_CANCELED: |
| 1241 | case CPU_DYING: |
| 1242 | uncore_cpu_dying(cpu); |
| 1243 | break; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1244 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1245 | case CPU_DOWN_PREPARE: |
| 1246 | uncore_event_exit_cpu(cpu); |
| 1247 | break; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1248 | } |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1249 | return NOTIFY_OK; |
| 1250 | } |
| 1251 | |
Paul Gortmaker | 148f9bb | 2013-06-18 18:23:59 -0400 | [diff] [blame] | 1252 | static struct notifier_block uncore_cpu_nb = { |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 1253 | .notifier_call = uncore_cpu_notifier, |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1254 | /* |
| 1255 | * to migrate uncore events, our notifier should be executed |
| 1256 | * before perf core's notifier. |
| 1257 | */ |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 1258 | .priority = CPU_PRI_PERF + 1, |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1259 | }; |
| 1260 | |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1261 | static int __init type_pmu_register(struct intel_uncore_type *type) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1262 | { |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1263 | int i, ret; |
| 1264 | |
| 1265 | for (i = 0; i < type->num_boxes; i++) { |
| 1266 | ret = uncore_pmu_register(&type->pmus[i]); |
| 1267 | if (ret) |
| 1268 | return ret; |
| 1269 | } |
| 1270 | return 0; |
| 1271 | } |
| 1272 | |
| 1273 | static int __init uncore_msr_pmus_register(void) |
| 1274 | { |
| 1275 | struct intel_uncore_type **types = uncore_msr_uncores; |
| 1276 | int ret; |
| 1277 | |
Thomas Gleixner | 1229735 | 2016-02-22 22:19:12 +0000 | [diff] [blame] | 1278 | for (; *types; types++) { |
| 1279 | ret = type_pmu_register(*types); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1280 | if (ret) |
| 1281 | return ret; |
| 1282 | } |
| 1283 | return 0; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1284 | } |
| 1285 | |
| 1286 | static int __init uncore_cpu_init(void) |
| 1287 | { |
Yan, Zheng | c1e4658 | 2014-07-30 15:22:15 +0800 | [diff] [blame] | 1288 | int ret; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1289 | |
| 1290 | switch (boot_cpu_data.x86_model) { |
Yan, Zheng | fcde10e | 2012-06-15 14:31:35 +0800 | [diff] [blame] | 1291 | case 26: /* Nehalem */ |
| 1292 | case 30: |
| 1293 | case 37: /* Westmere */ |
| 1294 | case 44: |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1295 | nhm_uncore_cpu_init(); |
Yan, Zheng | fcde10e | 2012-06-15 14:31:35 +0800 | [diff] [blame] | 1296 | break; |
| 1297 | case 42: /* Sandy Bridge */ |
Vince Weaver | 9a6bc143 | 2013-04-29 15:52:27 -0400 | [diff] [blame] | 1298 | case 58: /* Ivy Bridge */ |
Andi Kleen | 3a99958 | 2015-06-14 22:57:41 -0700 | [diff] [blame] | 1299 | case 60: /* Haswell */ |
| 1300 | case 69: /* Haswell */ |
| 1301 | case 70: /* Haswell */ |
| 1302 | case 61: /* Broadwell */ |
| 1303 | case 71: /* Broadwell */ |
Yan, Zheng | 92807ffd | 2014-07-30 15:22:13 +0800 | [diff] [blame] | 1304 | snb_uncore_cpu_init(); |
Yan, Zheng | fcde10e | 2012-06-15 14:31:35 +0800 | [diff] [blame] | 1305 | break; |
Vince Weaver | 80e217e | 2013-04-29 15:49:28 -0400 | [diff] [blame] | 1306 | case 45: /* Sandy Bridge-EP */ |
Yan, Zheng | 8268fdf | 2014-07-30 15:22:14 +0800 | [diff] [blame] | 1307 | snbep_uncore_cpu_init(); |
Yan, Zheng | 7c94ee2 | 2012-06-15 14:31:37 +0800 | [diff] [blame] | 1308 | break; |
Yan, Zheng | cb37af7 | 2012-08-06 13:11:22 +0800 | [diff] [blame] | 1309 | case 46: /* Nehalem-EX */ |
Yan, Zheng | cb37af7 | 2012-08-06 13:11:22 +0800 | [diff] [blame] | 1310 | case 47: /* Westmere-EX aka. Xeon E7 */ |
Yan, Zheng | c1e4658 | 2014-07-30 15:22:15 +0800 | [diff] [blame] | 1311 | nhmex_uncore_cpu_init(); |
Yan, Zheng | 254298c | 2012-07-05 14:32:17 +0800 | [diff] [blame] | 1312 | break; |
Peter Zijlstra | ddcd097 | 2014-08-12 09:15:25 +0200 | [diff] [blame] | 1313 | case 62: /* Ivy Bridge-EP */ |
| 1314 | ivbep_uncore_cpu_init(); |
Yan, Zheng | e850f9c | 2013-04-16 19:51:07 +0800 | [diff] [blame] | 1315 | break; |
Yan, Zheng | e735b9d | 2014-09-04 16:08:26 -0700 | [diff] [blame] | 1316 | case 63: /* Haswell-EP */ |
| 1317 | hswep_uncore_cpu_init(); |
| 1318 | break; |
Kan Liang | d6980ef | 2015-12-03 16:00:11 -0500 | [diff] [blame] | 1319 | case 79: /* BDX-EP */ |
Kan Liang | 070e988 | 2015-07-02 08:12:52 -0400 | [diff] [blame] | 1320 | case 86: /* BDX-DE */ |
| 1321 | bdx_uncore_cpu_init(); |
| 1322 | break; |
Harish Chegondi | 77af003 | 2015-12-07 14:32:32 -0800 | [diff] [blame] | 1323 | case 87: /* Knights Landing */ |
| 1324 | knl_uncore_cpu_init(); |
| 1325 | break; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1326 | default: |
| 1327 | return 0; |
| 1328 | } |
| 1329 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1330 | ret = uncore_types_init(uncore_msr_uncores, true); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1331 | if (ret) |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1332 | goto err; |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1333 | |
| 1334 | ret = uncore_msr_pmus_register(); |
| 1335 | if (ret) |
| 1336 | goto err; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1337 | return 0; |
Thomas Gleixner | ffeda00 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1338 | err: |
| 1339 | uncore_types_exit(uncore_msr_uncores); |
| 1340 | uncore_msr_uncores = empty_uncore; |
| 1341 | return ret; |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1342 | } |
| 1343 | |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1344 | static void __init uncore_cpu_setup(void *dummy) |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1345 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1346 | uncore_cpu_starting(smp_processor_id(), true); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1347 | } |
| 1348 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1349 | /* Lazy to avoid allocation of a few bytes for the normal case */ |
| 1350 | static __initdata DECLARE_BITMAP(packages, MAX_LOCAL_APIC); |
| 1351 | |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1352 | static int __init uncore_cpumask_init(void) |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1353 | { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1354 | unsigned int cpu; |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1355 | |
| 1356 | for_each_online_cpu(cpu) { |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1357 | unsigned int pkg = topology_logical_package_id(cpu); |
| 1358 | int ret; |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1359 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1360 | if (test_and_set_bit(pkg, packages)) |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1361 | continue; |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1362 | /* |
| 1363 | * The first online cpu of each package takes the refcounts |
| 1364 | * for all other online cpus in that package. |
| 1365 | */ |
| 1366 | ret = uncore_cpu_prepare(cpu); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1367 | if (ret) |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1368 | return ret; |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1369 | uncore_event_init_cpu(cpu); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1370 | smp_call_function_single(cpu, uncore_cpu_setup, NULL, 1); |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1371 | } |
Linus Torvalds | 467a9e1 | 2014-04-07 14:55:46 -0700 | [diff] [blame] | 1372 | __register_cpu_notifier(&uncore_cpu_nb); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1373 | return 0; |
Stephane Eranian | 411cf18 | 2014-02-11 16:20:07 +0100 | [diff] [blame] | 1374 | } |
| 1375 | |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1376 | static int __init intel_uncore_init(void) |
| 1377 | { |
| 1378 | int ret; |
| 1379 | |
| 1380 | if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL) |
| 1381 | return -ENODEV; |
| 1382 | |
Yan, Zheng | a05123b | 2012-08-21 17:08:37 +0800 | [diff] [blame] | 1383 | if (cpu_has_hypervisor) |
| 1384 | return -ENODEV; |
| 1385 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1386 | max_packages = topology_max_packages(); |
| 1387 | |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1388 | ret = uncore_pci_init(); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1389 | if (ret) |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1390 | return ret; |
Yan, Zheng | 14371cc | 2012-06-15 14:31:36 +0800 | [diff] [blame] | 1391 | ret = uncore_cpu_init(); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1392 | if (ret) |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1393 | goto err; |
| 1394 | |
| 1395 | cpu_notifier_register_begin(); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1396 | ret = uncore_cpumask_init(); |
| 1397 | if (ret) |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1398 | goto err; |
| 1399 | cpu_notifier_register_done(); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1400 | return 0; |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1401 | |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1402 | err: |
Thomas Gleixner | 7b672d6 | 2016-02-22 22:19:17 +0000 | [diff] [blame^] | 1403 | /* Undo box->init_box() */ |
| 1404 | on_each_cpu_mask(&uncore_cpu_mask, uncore_exit_boxes, NULL, 1); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1405 | uncore_types_exit(uncore_msr_uncores); |
Thomas Gleixner | 4f08967 | 2016-02-22 22:19:09 +0000 | [diff] [blame] | 1406 | uncore_pci_exit(); |
Thomas Gleixner | cf6d445 | 2016-02-22 22:19:16 +0000 | [diff] [blame] | 1407 | cpu_notifier_register_done(); |
Yan, Zheng | 087bfbb | 2012-06-15 14:31:34 +0800 | [diff] [blame] | 1408 | return ret; |
| 1409 | } |
| 1410 | device_initcall(intel_uncore_init); |