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TOMOYO Linux Cross Reference
Linux/arch/x86/events/intel/uncore.h

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  1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #include <linux/slab.h>
  3 #include <linux/pci.h>
  4 #include <asm/apicdef.h>
  5 
  6 #include <linux/perf_event.h>
  7 #include "../perf_event.h"
  8 
  9 #define UNCORE_PMU_NAME_LEN             32
 10 #define UNCORE_PMU_HRTIMER_INTERVAL     (60LL * NSEC_PER_SEC)
 11 #define UNCORE_SNB_IMC_HRTIMER_INTERVAL (5ULL * NSEC_PER_SEC)
 12 
 13 #define UNCORE_FIXED_EVENT              0xff
 14 #define UNCORE_PMC_IDX_MAX_GENERIC      8
 15 #define UNCORE_PMC_IDX_MAX_FIXED        1
 16 #define UNCORE_PMC_IDX_MAX_FREERUNNING  1
 17 #define UNCORE_PMC_IDX_FIXED            UNCORE_PMC_IDX_MAX_GENERIC
 18 #define UNCORE_PMC_IDX_FREERUNNING      (UNCORE_PMC_IDX_FIXED + \
 19                                         UNCORE_PMC_IDX_MAX_FIXED)
 20 #define UNCORE_PMC_IDX_MAX              (UNCORE_PMC_IDX_FREERUNNING + \
 21                                         UNCORE_PMC_IDX_MAX_FREERUNNING)
 22 
 23 #define UNCORE_PCI_DEV_FULL_DATA(dev, func, type, idx)  \
 24                 ((dev << 24) | (func << 16) | (type << 8) | idx)
 25 #define UNCORE_PCI_DEV_DATA(type, idx)  ((type << 8) | idx)
 26 #define UNCORE_PCI_DEV_DEV(data)        ((data >> 24) & 0xff)
 27 #define UNCORE_PCI_DEV_FUNC(data)       ((data >> 16) & 0xff)
 28 #define UNCORE_PCI_DEV_TYPE(data)       ((data >> 8) & 0xff)
 29 #define UNCORE_PCI_DEV_IDX(data)        (data & 0xff)
 30 #define UNCORE_EXTRA_PCI_DEV            0xff
 31 #define UNCORE_EXTRA_PCI_DEV_MAX        3
 32 
 33 #define UNCORE_EVENT_CONSTRAINT(c, n) EVENT_CONSTRAINT(c, n, 0xff)
 34 
 35 struct pci_extra_dev {
 36         struct pci_dev *dev[UNCORE_EXTRA_PCI_DEV_MAX];
 37 };
 38 
 39 struct intel_uncore_ops;
 40 struct intel_uncore_pmu;
 41 struct intel_uncore_box;
 42 struct uncore_event_desc;
 43 struct freerunning_counters;
 44 
 45 struct intel_uncore_type {
 46         const char *name;
 47         int num_counters;
 48         int num_boxes;
 49         int perf_ctr_bits;
 50         int fixed_ctr_bits;
 51         int num_freerunning_types;
 52         unsigned perf_ctr;
 53         unsigned event_ctl;
 54         unsigned event_mask;
 55         unsigned event_mask_ext;
 56         unsigned fixed_ctr;
 57         unsigned fixed_ctl;
 58         unsigned box_ctl;
 59         unsigned msr_offset;
 60         unsigned num_shared_regs:8;
 61         unsigned single_fixed:1;
 62         unsigned pair_ctr_ctl:1;
 63         unsigned *msr_offsets;
 64         struct event_constraint unconstrainted;
 65         struct event_constraint *constraints;
 66         struct intel_uncore_pmu *pmus;
 67         struct intel_uncore_ops *ops;
 68         struct uncore_event_desc *event_descs;
 69         struct freerunning_counters *freerunning;
 70         const struct attribute_group *attr_groups[4];
 71         struct pmu *pmu; /* for custom pmu ops */
 72 };
 73 
 74 #define pmu_group attr_groups[0]
 75 #define format_group attr_groups[1]
 76 #define events_group attr_groups[2]
 77 
 78 struct intel_uncore_ops {
 79         void (*init_box)(struct intel_uncore_box *);
 80         void (*exit_box)(struct intel_uncore_box *);
 81         void (*disable_box)(struct intel_uncore_box *);
 82         void (*enable_box)(struct intel_uncore_box *);
 83         void (*disable_event)(struct intel_uncore_box *, struct perf_event *);
 84         void (*enable_event)(struct intel_uncore_box *, struct perf_event *);
 85         u64 (*read_counter)(struct intel_uncore_box *, struct perf_event *);
 86         int (*hw_config)(struct intel_uncore_box *, struct perf_event *);
 87         struct event_constraint *(*get_constraint)(struct intel_uncore_box *,
 88                                                    struct perf_event *);
 89         void (*put_constraint)(struct intel_uncore_box *, struct perf_event *);
 90 };
 91 
 92 struct intel_uncore_pmu {
 93         struct pmu                      pmu;
 94         char                            name[UNCORE_PMU_NAME_LEN];
 95         int                             pmu_idx;
 96         int                             func_id;
 97         bool                            registered;
 98         atomic_t                        activeboxes;
 99         struct intel_uncore_type        *type;
100         struct intel_uncore_box         **boxes;
101 };
102 
103 struct intel_uncore_extra_reg {
104         raw_spinlock_t lock;
105         u64 config, config1, config2;
106         atomic_t ref;
107 };
108 
109 struct intel_uncore_box {
110         int pci_phys_id;
111         int pkgid;      /* Logical package ID */
112         int n_active;   /* number of active events */
113         int n_events;
114         int cpu;        /* cpu to collect events */
115         unsigned long flags;
116         atomic_t refcnt;
117         struct perf_event *events[UNCORE_PMC_IDX_MAX];
118         struct perf_event *event_list[UNCORE_PMC_IDX_MAX];
119         struct event_constraint *event_constraint[UNCORE_PMC_IDX_MAX];
120         unsigned long active_mask[BITS_TO_LONGS(UNCORE_PMC_IDX_MAX)];
121         u64 tags[UNCORE_PMC_IDX_MAX];
122         struct pci_dev *pci_dev;
123         struct intel_uncore_pmu *pmu;
124         u64 hrtimer_duration; /* hrtimer timeout for this box */
125         struct hrtimer hrtimer;
126         struct list_head list;
127         struct list_head active_list;
128         void *io_addr;
129         struct intel_uncore_extra_reg shared_regs[0];
130 };
131 
132 #define UNCORE_BOX_FLAG_INITIATED       0
133 #define UNCORE_BOX_FLAG_CTL_OFFS8       1 /* event config registers are 8-byte apart */
134 
135 struct uncore_event_desc {
136         struct kobj_attribute attr;
137         const char *config;
138 };
139 
140 struct freerunning_counters {
141         unsigned int counter_base;
142         unsigned int counter_offset;
143         unsigned int box_offset;
144         unsigned int num_counters;
145         unsigned int bits;
146 };
147 
148 struct pci2phy_map {
149         struct list_head list;
150         int segment;
151         int pbus_to_physid[256];
152 };
153 
154 struct pci2phy_map *__find_pci2phy_map(int segment);
155 
156 ssize_t uncore_event_show(struct kobject *kobj,
157                           struct kobj_attribute *attr, char *buf);
158 
159 #define INTEL_UNCORE_EVENT_DESC(_name, _config)                 \
160 {                                                               \
161         .attr   = __ATTR(_name, 0444, uncore_event_show, NULL), \
162         .config = _config,                                      \
163 }
164 
165 #define DEFINE_UNCORE_FORMAT_ATTR(_var, _name, _format)                 \
166 static ssize_t __uncore_##_var##_show(struct kobject *kobj,             \
167                                 struct kobj_attribute *attr,            \
168                                 char *page)                             \
169 {                                                                       \
170         BUILD_BUG_ON(sizeof(_format) >= PAGE_SIZE);                     \
171         return sprintf(page, _format "\n");                             \
172 }                                                                       \
173 static struct kobj_attribute format_attr_##_var =                       \
174         __ATTR(_name, 0444, __uncore_##_var##_show, NULL)
175 
176 static inline bool uncore_pmc_fixed(int idx)
177 {
178         return idx == UNCORE_PMC_IDX_FIXED;
179 }
180 
181 static inline bool uncore_pmc_freerunning(int idx)
182 {
183         return idx == UNCORE_PMC_IDX_FREERUNNING;
184 }
185 
186 static inline unsigned uncore_pci_box_ctl(struct intel_uncore_box *box)
187 {
188         return box->pmu->type->box_ctl;
189 }
190 
191 static inline unsigned uncore_pci_fixed_ctl(struct intel_uncore_box *box)
192 {
193         return box->pmu->type->fixed_ctl;
194 }
195 
196 static inline unsigned uncore_pci_fixed_ctr(struct intel_uncore_box *box)
197 {
198         return box->pmu->type->fixed_ctr;
199 }
200 
201 static inline
202 unsigned uncore_pci_event_ctl(struct intel_uncore_box *box, int idx)
203 {
204         if (test_bit(UNCORE_BOX_FLAG_CTL_OFFS8, &box->flags))
205                 return idx * 8 + box->pmu->type->event_ctl;
206 
207         return idx * 4 + box->pmu->type->event_ctl;
208 }
209 
210 static inline
211 unsigned uncore_pci_perf_ctr(struct intel_uncore_box *box, int idx)
212 {
213         return idx * 8 + box->pmu->type->perf_ctr;
214 }
215 
216 static inline unsigned uncore_msr_box_offset(struct intel_uncore_box *box)
217 {
218         struct intel_uncore_pmu *pmu = box->pmu;
219         return pmu->type->msr_offsets ?
220                 pmu->type->msr_offsets[pmu->pmu_idx] :
221                 pmu->type->msr_offset * pmu->pmu_idx;
222 }
223 
224 static inline unsigned uncore_msr_box_ctl(struct intel_uncore_box *box)
225 {
226         if (!box->pmu->type->box_ctl)
227                 return 0;
228         return box->pmu->type->box_ctl + uncore_msr_box_offset(box);
229 }
230 
231 static inline unsigned uncore_msr_fixed_ctl(struct intel_uncore_box *box)
232 {
233         if (!box->pmu->type->fixed_ctl)
234                 return 0;
235         return box->pmu->type->fixed_ctl + uncore_msr_box_offset(box);
236 }
237 
238 static inline unsigned uncore_msr_fixed_ctr(struct intel_uncore_box *box)
239 {
240         return box->pmu->type->fixed_ctr + uncore_msr_box_offset(box);
241 }
242 
243 
244 /*
245  * In the uncore document, there is no event-code assigned to free running
246  * counters. Some events need to be defined to indicate the free running
247  * counters. The events are encoded as event-code + umask-code.
248  *
249  * The event-code for all free running counters is 0xff, which is the same as
250  * the fixed counters.
251  *
252  * The umask-code is used to distinguish a fixed counter and a free running
253  * counter, and different types of free running counters.
254  * - For fixed counters, the umask-code is 0x0X.
255  *   X indicates the index of the fixed counter, which starts from 0.
256  * - For free running counters, the umask-code uses the rest of the space.
257  *   It would bare the format of 0xXY.
258  *   X stands for the type of free running counters, which starts from 1.
259  *   Y stands for the index of free running counters of same type, which
260  *   starts from 0.
261  *
262  * For example, there are three types of IIO free running counters on Skylake
263  * server, IO CLOCKS counters, BANDWIDTH counters and UTILIZATION counters.
264  * The event-code for all the free running counters is 0xff.
265  * 'ioclk' is the first counter of IO CLOCKS. IO CLOCKS is the first type,
266  * which umask-code starts from 0x10.
267  * So 'ioclk' is encoded as event=0xff,umask=0x10
268  * 'bw_in_port2' is the third counter of BANDWIDTH counters. BANDWIDTH is
269  * the second type, which umask-code starts from 0x20.
270  * So 'bw_in_port2' is encoded as event=0xff,umask=0x22
271  */
272 static inline unsigned int uncore_freerunning_idx(u64 config)
273 {
274         return ((config >> 8) & 0xf);
275 }
276 
277 #define UNCORE_FREERUNNING_UMASK_START          0x10
278 
279 static inline unsigned int uncore_freerunning_type(u64 config)
280 {
281         return ((((config >> 8) - UNCORE_FREERUNNING_UMASK_START) >> 4) & 0xf);
282 }
283 
284 static inline
285 unsigned int uncore_freerunning_counter(struct intel_uncore_box *box,
286                                         struct perf_event *event)
287 {
288         unsigned int type = uncore_freerunning_type(event->attr.config);
289         unsigned int idx = uncore_freerunning_idx(event->attr.config);
290         struct intel_uncore_pmu *pmu = box->pmu;
291 
292         return pmu->type->freerunning[type].counter_base +
293                pmu->type->freerunning[type].counter_offset * idx +
294                pmu->type->freerunning[type].box_offset * pmu->pmu_idx;
295 }
296 
297 static inline
298 unsigned uncore_msr_event_ctl(struct intel_uncore_box *box, int idx)
299 {
300         return box->pmu->type->event_ctl +
301                 (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
302                 uncore_msr_box_offset(box);
303 }
304 
305 static inline
306 unsigned uncore_msr_perf_ctr(struct intel_uncore_box *box, int idx)
307 {
308         return box->pmu->type->perf_ctr +
309                 (box->pmu->type->pair_ctr_ctl ? 2 * idx : idx) +
310                 uncore_msr_box_offset(box);
311 }
312 
313 static inline
314 unsigned uncore_fixed_ctl(struct intel_uncore_box *box)
315 {
316         if (box->pci_dev)
317                 return uncore_pci_fixed_ctl(box);
318         else
319                 return uncore_msr_fixed_ctl(box);
320 }
321 
322 static inline
323 unsigned uncore_fixed_ctr(struct intel_uncore_box *box)
324 {
325         if (box->pci_dev)
326                 return uncore_pci_fixed_ctr(box);
327         else
328                 return uncore_msr_fixed_ctr(box);
329 }
330 
331 static inline
332 unsigned uncore_event_ctl(struct intel_uncore_box *box, int idx)
333 {
334         if (box->pci_dev)
335                 return uncore_pci_event_ctl(box, idx);
336         else
337                 return uncore_msr_event_ctl(box, idx);
338 }
339 
340 static inline
341 unsigned uncore_perf_ctr(struct intel_uncore_box *box, int idx)
342 {
343         if (box->pci_dev)
344                 return uncore_pci_perf_ctr(box, idx);
345         else
346                 return uncore_msr_perf_ctr(box, idx);
347 }
348 
349 static inline int uncore_perf_ctr_bits(struct intel_uncore_box *box)
350 {
351         return box->pmu->type->perf_ctr_bits;
352 }
353 
354 static inline int uncore_fixed_ctr_bits(struct intel_uncore_box *box)
355 {
356         return box->pmu->type->fixed_ctr_bits;
357 }
358 
359 static inline
360 unsigned int uncore_freerunning_bits(struct intel_uncore_box *box,
361                                      struct perf_event *event)
362 {
363         unsigned int type = uncore_freerunning_type(event->attr.config);
364 
365         return box->pmu->type->freerunning[type].bits;
366 }
367 
368 static inline int uncore_num_freerunning(struct intel_uncore_box *box,
369                                          struct perf_event *event)
370 {
371         unsigned int type = uncore_freerunning_type(event->attr.config);
372 
373         return box->pmu->type->freerunning[type].num_counters;
374 }
375 
376 static inline int uncore_num_freerunning_types(struct intel_uncore_box *box,
377                                                struct perf_event *event)
378 {
379         return box->pmu->type->num_freerunning_types;
380 }
381 
382 static inline bool check_valid_freerunning_event(struct intel_uncore_box *box,
383                                                  struct perf_event *event)
384 {
385         unsigned int type = uncore_freerunning_type(event->attr.config);
386         unsigned int idx = uncore_freerunning_idx(event->attr.config);
387 
388         return (type < uncore_num_freerunning_types(box, event)) &&
389                (idx < uncore_num_freerunning(box, event));
390 }
391 
392 static inline int uncore_num_counters(struct intel_uncore_box *box)
393 {
394         return box->pmu->type->num_counters;
395 }
396 
397 static inline bool is_freerunning_event(struct perf_event *event)
398 {
399         u64 cfg = event->attr.config;
400 
401         return ((cfg & UNCORE_FIXED_EVENT) == UNCORE_FIXED_EVENT) &&
402                (((cfg >> 8) & 0xff) >= UNCORE_FREERUNNING_UMASK_START);
403 }
404 
405 static inline void uncore_disable_box(struct intel_uncore_box *box)
406 {
407         if (box->pmu->type->ops->disable_box)
408                 box->pmu->type->ops->disable_box(box);
409 }
410 
411 static inline void uncore_enable_box(struct intel_uncore_box *box)
412 {
413         if (box->pmu->type->ops->enable_box)
414                 box->pmu->type->ops->enable_box(box);
415 }
416 
417 static inline void uncore_disable_event(struct intel_uncore_box *box,
418                                 struct perf_event *event)
419 {
420         box->pmu->type->ops->disable_event(box, event);
421 }
422 
423 static inline void uncore_enable_event(struct intel_uncore_box *box,
424                                 struct perf_event *event)
425 {
426         box->pmu->type->ops->enable_event(box, event);
427 }
428 
429 static inline u64 uncore_read_counter(struct intel_uncore_box *box,
430                                 struct perf_event *event)
431 {
432         return box->pmu->type->ops->read_counter(box, event);
433 }
434 
435 static inline void uncore_box_init(struct intel_uncore_box *box)
436 {
437         if (!test_and_set_bit(UNCORE_BOX_FLAG_INITIATED, &box->flags)) {
438                 if (box->pmu->type->ops->init_box)
439                         box->pmu->type->ops->init_box(box);
440         }
441 }
442 
443 static inline void uncore_box_exit(struct intel_uncore_box *box)
444 {
445         if (test_and_clear_bit(UNCORE_BOX_FLAG_INITIATED, &box->flags)) {
446                 if (box->pmu->type->ops->exit_box)
447                         box->pmu->type->ops->exit_box(box);
448         }
449 }
450 
451 static inline bool uncore_box_is_fake(struct intel_uncore_box *box)
452 {
453         return (box->pkgid < 0);
454 }
455 
456 static inline struct intel_uncore_pmu *uncore_event_to_pmu(struct perf_event *event)
457 {
458         return container_of(event->pmu, struct intel_uncore_pmu, pmu);
459 }
460 
461 static inline struct intel_uncore_box *uncore_event_to_box(struct perf_event *event)
462 {
463         return event->pmu_private;
464 }
465 
466 struct intel_uncore_box *uncore_pmu_to_box(struct intel_uncore_pmu *pmu, int cpu);
467 u64 uncore_msr_read_counter(struct intel_uncore_box *box, struct perf_event *event);
468 void uncore_pmu_start_hrtimer(struct intel_uncore_box *box);
469 void uncore_pmu_cancel_hrtimer(struct intel_uncore_box *box);
470 void uncore_pmu_event_start(struct perf_event *event, int flags);
471 void uncore_pmu_event_stop(struct perf_event *event, int flags);
472 int uncore_pmu_event_add(struct perf_event *event, int flags);
473 void uncore_pmu_event_del(struct perf_event *event, int flags);
474 void uncore_pmu_event_read(struct perf_event *event);
475 void uncore_perf_event_update(struct intel_uncore_box *box, struct perf_event *event);
476 struct event_constraint *
477 uncore_get_constraint(struct intel_uncore_box *box, struct perf_event *event);
478 void uncore_put_constraint(struct intel_uncore_box *box, struct perf_event *event);
479 u64 uncore_shared_reg_config(struct intel_uncore_box *box, int idx);
480 
481 extern struct intel_uncore_type **uncore_msr_uncores;
482 extern struct intel_uncore_type **uncore_pci_uncores;
483 extern struct pci_driver *uncore_pci_driver;
484 extern raw_spinlock_t pci2phy_map_lock;
485 extern struct list_head pci2phy_map_head;
486 extern struct pci_extra_dev *uncore_extra_pci_dev;
487 extern struct event_constraint uncore_constraint_empty;
488 
489 /* uncore_snb.c */
490 int snb_uncore_pci_init(void);
491 int ivb_uncore_pci_init(void);
492 int hsw_uncore_pci_init(void);
493 int bdw_uncore_pci_init(void);
494 int skl_uncore_pci_init(void);
495 void snb_uncore_cpu_init(void);
496 void nhm_uncore_cpu_init(void);
497 void skl_uncore_cpu_init(void);
498 int snb_pci2phy_map_init(int devid);
499 
500 /* uncore_snbep.c */
501 int snbep_uncore_pci_init(void);
502 void snbep_uncore_cpu_init(void);
503 int ivbep_uncore_pci_init(void);
504 void ivbep_uncore_cpu_init(void);
505 int hswep_uncore_pci_init(void);
506 void hswep_uncore_cpu_init(void);
507 int bdx_uncore_pci_init(void);
508 void bdx_uncore_cpu_init(void);
509 int knl_uncore_pci_init(void);
510 void knl_uncore_cpu_init(void);
511 int skx_uncore_pci_init(void);
512 void skx_uncore_cpu_init(void);
513 
514 /* uncore_nhmex.c */
515 void nhmex_uncore_cpu_init(void);
516 

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