1 /*
2 * Copyright © 2018 Intel Corporation
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #include <dirent.h>
25
26 #include <sys/types.h>
27 #include <sys/stat.h>
28 #include <fcntl.h>
29 #include <unistd.h>
30 #include <errno.h>
31
32 #ifndef HAVE_DIRENT_D_TYPE
33 #include <limits.h> // PATH_MAX
34 #endif
35
36 #include <drm-uapi/i915_drm.h>
37
38 #include "common/intel_gem.h"
39
40 #include "dev/intel_debug.h"
41 #include "dev/intel_device_info.h"
42
43 #include "perf/intel_perf.h"
44 #include "perf/intel_perf_regs.h"
45 #include "perf/intel_perf_mdapi.h"
46 #include "perf/intel_perf_metrics.h"
47 #include "perf/intel_perf_private.h"
48
49 #include "util/bitscan.h"
50 #include "util/macros.h"
51 #include "util/mesa-sha1.h"
52 #include "util/u_math.h"
53
54 #define FILE_DEBUG_FLAG DEBUG_PERFMON
55
56 static bool
is_dir_or_link(const struct dirent * entry,const char * parent_dir)57 is_dir_or_link(const struct dirent *entry, const char *parent_dir)
58 {
59 #ifdef HAVE_DIRENT_D_TYPE
60 return entry->d_type == DT_DIR || entry->d_type == DT_LNK;
61 #else
62 struct stat st;
63 char path[PATH_MAX + 1];
64 snprintf(path, sizeof(path), "%s/%s", parent_dir, entry->d_name);
65 lstat(path, &st);
66 return S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode);
67 #endif
68 }
69
70 static bool
get_sysfs_dev_dir(struct intel_perf_config * perf,int fd)71 get_sysfs_dev_dir(struct intel_perf_config *perf, int fd)
72 {
73 struct stat sb;
74 int min, maj;
75 DIR *drmdir;
76 struct dirent *drm_entry;
77 int len;
78
79 perf->sysfs_dev_dir[0] = '\0';
80
81 if (INTEL_DEBUG(DEBUG_NO_OACONFIG))
82 return true;
83
84 if (fstat(fd, &sb)) {
85 DBG("Failed to stat DRM fd\n");
86 return false;
87 }
88
89 maj = major(sb.st_rdev);
90 min = minor(sb.st_rdev);
91
92 if (!S_ISCHR(sb.st_mode)) {
93 DBG("DRM fd is not a character device as expected\n");
94 return false;
95 }
96
97 len = snprintf(perf->sysfs_dev_dir,
98 sizeof(perf->sysfs_dev_dir),
99 "/sys/dev/char/%d:%d/device/drm", maj, min);
100 if (len < 0 || len >= sizeof(perf->sysfs_dev_dir)) {
101 DBG("Failed to concatenate sysfs path to drm device\n");
102 return false;
103 }
104
105 drmdir = opendir(perf->sysfs_dev_dir);
106 if (!drmdir) {
107 DBG("Failed to open %s: %m\n", perf->sysfs_dev_dir);
108 return false;
109 }
110
111 while ((drm_entry = readdir(drmdir))) {
112 if (is_dir_or_link(drm_entry, perf->sysfs_dev_dir) &&
113 strncmp(drm_entry->d_name, "card", 4) == 0)
114 {
115 len = snprintf(perf->sysfs_dev_dir,
116 sizeof(perf->sysfs_dev_dir),
117 "/sys/dev/char/%d:%d/device/drm/%s",
118 maj, min, drm_entry->d_name);
119 closedir(drmdir);
120 if (len < 0 || len >= sizeof(perf->sysfs_dev_dir))
121 return false;
122 else
123 return true;
124 }
125 }
126
127 closedir(drmdir);
128
129 DBG("Failed to find cardX directory under /sys/dev/char/%d:%d/device/drm\n",
130 maj, min);
131
132 return false;
133 }
134
135 static bool
read_file_uint64(const char * file,uint64_t * val)136 read_file_uint64(const char *file, uint64_t *val)
137 {
138 char buf[32];
139 int fd, n;
140
141 fd = open(file, 0);
142 if (fd < 0)
143 return false;
144 while ((n = read(fd, buf, sizeof (buf) - 1)) < 0 &&
145 errno == EINTR);
146 close(fd);
147 if (n < 0)
148 return false;
149
150 buf[n] = '\0';
151 *val = strtoull(buf, NULL, 0);
152
153 return true;
154 }
155
156 static bool
read_sysfs_drm_device_file_uint64(struct intel_perf_config * perf,const char * file,uint64_t * value)157 read_sysfs_drm_device_file_uint64(struct intel_perf_config *perf,
158 const char *file,
159 uint64_t *value)
160 {
161 char buf[512];
162 int len;
163
164 len = snprintf(buf, sizeof(buf), "%s/%s", perf->sysfs_dev_dir, file);
165 if (len < 0 || len >= sizeof(buf)) {
166 DBG("Failed to concatenate sys filename to read u64 from\n");
167 return false;
168 }
169
170 return read_file_uint64(buf, value);
171 }
172
173 static void
register_oa_config(struct intel_perf_config * perf,const struct intel_device_info * devinfo,const struct intel_perf_query_info * query,uint64_t config_id)174 register_oa_config(struct intel_perf_config *perf,
175 const struct intel_device_info *devinfo,
176 const struct intel_perf_query_info *query,
177 uint64_t config_id)
178 {
179 struct intel_perf_query_info *registered_query =
180 intel_perf_append_query_info(perf, 0);
181
182 *registered_query = *query;
183 registered_query->oa_format = devinfo->ver >= 8 ?
184 I915_OA_FORMAT_A32u40_A4u32_B8_C8 : I915_OA_FORMAT_A45_B8_C8;
185 registered_query->oa_metrics_set_id = config_id;
186 DBG("metric set registered: id = %" PRIu64", guid = %s\n",
187 registered_query->oa_metrics_set_id, query->guid);
188 }
189
190 static void
enumerate_sysfs_metrics(struct intel_perf_config * perf,const struct intel_device_info * devinfo)191 enumerate_sysfs_metrics(struct intel_perf_config *perf,
192 const struct intel_device_info *devinfo)
193 {
194 DIR *metricsdir = NULL;
195 struct dirent *metric_entry;
196 char buf[256];
197 int len;
198
199 len = snprintf(buf, sizeof(buf), "%s/metrics", perf->sysfs_dev_dir);
200 if (len < 0 || len >= sizeof(buf)) {
201 DBG("Failed to concatenate path to sysfs metrics/ directory\n");
202 return;
203 }
204
205 metricsdir = opendir(buf);
206 if (!metricsdir) {
207 DBG("Failed to open %s: %m\n", buf);
208 return;
209 }
210
211 while ((metric_entry = readdir(metricsdir))) {
212 struct hash_entry *entry;
213 if (!is_dir_or_link(metric_entry, buf) ||
214 metric_entry->d_name[0] == '.')
215 continue;
216
217 DBG("metric set: %s\n", metric_entry->d_name);
218 entry = _mesa_hash_table_search(perf->oa_metrics_table,
219 metric_entry->d_name);
220 if (entry) {
221 uint64_t id;
222 if (!intel_perf_load_metric_id(perf, metric_entry->d_name, &id)) {
223 DBG("Failed to read metric set id from %s: %m", buf);
224 continue;
225 }
226
227 register_oa_config(perf, devinfo,
228 (const struct intel_perf_query_info *)entry->data, id);
229 } else
230 DBG("metric set not known by mesa (skipping)\n");
231 }
232
233 closedir(metricsdir);
234 }
235
236 static void
add_all_metrics(struct intel_perf_config * perf,const struct intel_device_info * devinfo)237 add_all_metrics(struct intel_perf_config *perf,
238 const struct intel_device_info *devinfo)
239 {
240 hash_table_foreach(perf->oa_metrics_table, entry) {
241 const struct intel_perf_query_info *query = entry->data;
242 register_oa_config(perf, devinfo, query, 0);
243 }
244 }
245
246 static bool
kernel_has_dynamic_config_support(struct intel_perf_config * perf,int fd)247 kernel_has_dynamic_config_support(struct intel_perf_config *perf, int fd)
248 {
249 uint64_t invalid_config_id = UINT64_MAX;
250
251 return intel_ioctl(fd, DRM_IOCTL_I915_PERF_REMOVE_CONFIG,
252 &invalid_config_id) < 0 && errno == ENOENT;
253 }
254
255 static bool
i915_query_perf_config_supported(struct intel_perf_config * perf,int fd)256 i915_query_perf_config_supported(struct intel_perf_config *perf, int fd)
257 {
258 int32_t length = 0;
259 return !intel_i915_query_flags(fd, DRM_I915_QUERY_PERF_CONFIG,
260 DRM_I915_QUERY_PERF_CONFIG_LIST,
261 NULL, &length);
262 }
263
264 static bool
i915_query_perf_config_data(struct intel_perf_config * perf,int fd,const char * guid,struct drm_i915_perf_oa_config * config)265 i915_query_perf_config_data(struct intel_perf_config *perf,
266 int fd, const char *guid,
267 struct drm_i915_perf_oa_config *config)
268 {
269 char data[sizeof(struct drm_i915_query_perf_config) +
270 sizeof(struct drm_i915_perf_oa_config)] = {};
271 struct drm_i915_query_perf_config *query = (void *)data;
272
273 memcpy(query->uuid, guid, sizeof(query->uuid));
274 memcpy(query->data, config, sizeof(*config));
275
276 int32_t item_length = sizeof(data);
277 if (intel_i915_query_flags(fd, DRM_I915_QUERY_PERF_CONFIG,
278 DRM_I915_QUERY_PERF_CONFIG_DATA_FOR_UUID,
279 query, &item_length))
280 return false;
281
282 memcpy(config, query->data, sizeof(*config));
283
284 return true;
285 }
286
287 bool
intel_perf_load_metric_id(struct intel_perf_config * perf_cfg,const char * guid,uint64_t * metric_id)288 intel_perf_load_metric_id(struct intel_perf_config *perf_cfg,
289 const char *guid,
290 uint64_t *metric_id)
291 {
292 char config_path[280];
293
294 snprintf(config_path, sizeof(config_path), "%s/metrics/%s/id",
295 perf_cfg->sysfs_dev_dir, guid);
296
297 /* Don't recreate already loaded configs. */
298 return read_file_uint64(config_path, metric_id);
299 }
300
301 static uint64_t
i915_add_config(struct intel_perf_config * perf,int fd,const struct intel_perf_registers * config,const char * guid)302 i915_add_config(struct intel_perf_config *perf, int fd,
303 const struct intel_perf_registers *config,
304 const char *guid)
305 {
306 struct drm_i915_perf_oa_config i915_config = { 0, };
307
308 memcpy(i915_config.uuid, guid, sizeof(i915_config.uuid));
309
310 i915_config.n_mux_regs = config->n_mux_regs;
311 i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs);
312
313 i915_config.n_boolean_regs = config->n_b_counter_regs;
314 i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs);
315
316 i915_config.n_flex_regs = config->n_flex_regs;
317 i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs);
318
319 int ret = intel_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &i915_config);
320 return ret > 0 ? ret : 0;
321 }
322
323 static void
init_oa_configs(struct intel_perf_config * perf,int fd,const struct intel_device_info * devinfo)324 init_oa_configs(struct intel_perf_config *perf, int fd,
325 const struct intel_device_info *devinfo)
326 {
327 hash_table_foreach(perf->oa_metrics_table, entry) {
328 const struct intel_perf_query_info *query = entry->data;
329 uint64_t config_id;
330
331 if (intel_perf_load_metric_id(perf, query->guid, &config_id)) {
332 DBG("metric set: %s (already loaded)\n", query->guid);
333 register_oa_config(perf, devinfo, query, config_id);
334 continue;
335 }
336
337 int ret = i915_add_config(perf, fd, &query->config, query->guid);
338 if (ret < 0) {
339 DBG("Failed to load \"%s\" (%s) metrics set in kernel: %s\n",
340 query->name, query->guid, strerror(errno));
341 continue;
342 }
343
344 register_oa_config(perf, devinfo, query, ret);
345 DBG("metric set: %s (added)\n", query->guid);
346 }
347 }
348
349 static void
compute_topology_builtins(struct intel_perf_config * perf,const struct intel_device_info * devinfo)350 compute_topology_builtins(struct intel_perf_config *perf,
351 const struct intel_device_info *devinfo)
352 {
353 perf->sys_vars.slice_mask = devinfo->slice_masks;
354 perf->sys_vars.n_eu_slices = devinfo->num_slices;
355
356 for (int i = 0; i < sizeof(devinfo->subslice_masks[i]); i++) {
357 perf->sys_vars.n_eu_sub_slices +=
358 util_bitcount(devinfo->subslice_masks[i]);
359 }
360
361 for (int i = 0; i < sizeof(devinfo->eu_masks); i++)
362 perf->sys_vars.n_eus += util_bitcount(devinfo->eu_masks[i]);
363
364 perf->sys_vars.eu_threads_count = devinfo->num_thread_per_eu;
365
366 /* The subslice mask builtin contains bits for all slices. Prior to Gfx11
367 * it had groups of 3bits for each slice, on Gfx11 and above it's 8bits for
368 * each slice.
369 *
370 * Ideally equations would be updated to have a slice/subslice query
371 * function/operator.
372 */
373 perf->sys_vars.subslice_mask = 0;
374
375 int bits_per_subslice = devinfo->ver >= 11 ? 8 : 3;
376
377 for (int s = 0; s < util_last_bit(devinfo->slice_masks); s++) {
378 for (int ss = 0; ss < (devinfo->subslice_slice_stride * 8); ss++) {
379 if (intel_device_info_subslice_available(devinfo, s, ss))
380 perf->sys_vars.subslice_mask |= 1ULL << (s * bits_per_subslice + ss);
381 }
382 }
383 }
384
385 static bool
init_oa_sys_vars(struct intel_perf_config * perf,const struct intel_device_info * devinfo,bool use_register_snapshots)386 init_oa_sys_vars(struct intel_perf_config *perf,
387 const struct intel_device_info *devinfo,
388 bool use_register_snapshots)
389 {
390 uint64_t min_freq_mhz = 0, max_freq_mhz = 0;
391
392 if (!INTEL_DEBUG(DEBUG_NO_OACONFIG)) {
393 if (!read_sysfs_drm_device_file_uint64(perf, "gt_min_freq_mhz", &min_freq_mhz))
394 return false;
395
396 if (!read_sysfs_drm_device_file_uint64(perf, "gt_max_freq_mhz", &max_freq_mhz))
397 return false;
398 } else {
399 min_freq_mhz = 300;
400 max_freq_mhz = 1000;
401 }
402
403 memset(&perf->sys_vars, 0, sizeof(perf->sys_vars));
404 perf->sys_vars.gt_min_freq = min_freq_mhz * 1000000;
405 perf->sys_vars.gt_max_freq = max_freq_mhz * 1000000;
406 perf->sys_vars.timestamp_frequency = devinfo->timestamp_frequency;
407 perf->sys_vars.revision = devinfo->revision;
408 perf->sys_vars.query_mode = use_register_snapshots;
409 compute_topology_builtins(perf, devinfo);
410
411 return true;
412 }
413
414 typedef void (*perf_register_oa_queries_t)(struct intel_perf_config *);
415
416 static perf_register_oa_queries_t
get_register_queries_function(const struct intel_device_info * devinfo)417 get_register_queries_function(const struct intel_device_info *devinfo)
418 {
419 if (devinfo->is_haswell)
420 return intel_oa_register_queries_hsw;
421 if (devinfo->is_cherryview)
422 return intel_oa_register_queries_chv;
423 if (devinfo->is_broadwell)
424 return intel_oa_register_queries_bdw;
425 if (devinfo->is_broxton)
426 return intel_oa_register_queries_bxt;
427 if (devinfo->is_skylake) {
428 if (devinfo->gt == 2)
429 return intel_oa_register_queries_sklgt2;
430 if (devinfo->gt == 3)
431 return intel_oa_register_queries_sklgt3;
432 if (devinfo->gt == 4)
433 return intel_oa_register_queries_sklgt4;
434 }
435 if (devinfo->is_kabylake) {
436 if (devinfo->gt == 2)
437 return intel_oa_register_queries_kblgt2;
438 if (devinfo->gt == 3)
439 return intel_oa_register_queries_kblgt3;
440 }
441 if (devinfo->is_geminilake)
442 return intel_oa_register_queries_glk;
443 if (devinfo->is_coffeelake) {
444 if (devinfo->gt == 2)
445 return intel_oa_register_queries_cflgt2;
446 if (devinfo->gt == 3)
447 return intel_oa_register_queries_cflgt3;
448 }
449 if (devinfo->ver == 11) {
450 if (devinfo->is_elkhartlake)
451 return intel_oa_register_queries_ehl;
452 return intel_oa_register_queries_icl;
453 }
454 if (devinfo->is_tigerlake) {
455 if (devinfo->gt == 1)
456 return intel_oa_register_queries_tglgt1;
457 if (devinfo->gt == 2)
458 return intel_oa_register_queries_tglgt2;
459 }
460 if (devinfo->is_rocketlake)
461 return intel_oa_register_queries_rkl;
462 if (devinfo->is_dg1)
463 return intel_oa_register_queries_dg1;
464 if (devinfo->is_alderlake)
465 return intel_oa_register_queries_adl;
466
467 return NULL;
468 }
469
470 static int
intel_perf_compare_counter_names(const void * v1,const void * v2)471 intel_perf_compare_counter_names(const void *v1, const void *v2)
472 {
473 const struct intel_perf_query_counter *c1 = v1;
474 const struct intel_perf_query_counter *c2 = v2;
475
476 return strcmp(c1->name, c2->name);
477 }
478
479 static void
sort_query(struct intel_perf_query_info * q)480 sort_query(struct intel_perf_query_info *q)
481 {
482 qsort(q->counters, q->n_counters, sizeof(q->counters[0]),
483 intel_perf_compare_counter_names);
484 }
485
486 static void
load_pipeline_statistic_metrics(struct intel_perf_config * perf_cfg,const struct intel_device_info * devinfo)487 load_pipeline_statistic_metrics(struct intel_perf_config *perf_cfg,
488 const struct intel_device_info *devinfo)
489 {
490 struct intel_perf_query_info *query =
491 intel_perf_append_query_info(perf_cfg, MAX_STAT_COUNTERS);
492
493 query->kind = INTEL_PERF_QUERY_TYPE_PIPELINE;
494 query->name = "Pipeline Statistics Registers";
495
496 intel_perf_query_add_basic_stat_reg(query, IA_VERTICES_COUNT,
497 "N vertices submitted");
498 intel_perf_query_add_basic_stat_reg(query, IA_PRIMITIVES_COUNT,
499 "N primitives submitted");
500 intel_perf_query_add_basic_stat_reg(query, VS_INVOCATION_COUNT,
501 "N vertex shader invocations");
502
503 if (devinfo->ver == 6) {
504 intel_perf_query_add_stat_reg(query, GFX6_SO_PRIM_STORAGE_NEEDED, 1, 1,
505 "SO_PRIM_STORAGE_NEEDED",
506 "N geometry shader stream-out primitives (total)");
507 intel_perf_query_add_stat_reg(query, GFX6_SO_NUM_PRIMS_WRITTEN, 1, 1,
508 "SO_NUM_PRIMS_WRITTEN",
509 "N geometry shader stream-out primitives (written)");
510 } else {
511 intel_perf_query_add_stat_reg(query, GFX7_SO_PRIM_STORAGE_NEEDED(0), 1, 1,
512 "SO_PRIM_STORAGE_NEEDED (Stream 0)",
513 "N stream-out (stream 0) primitives (total)");
514 intel_perf_query_add_stat_reg(query, GFX7_SO_PRIM_STORAGE_NEEDED(1), 1, 1,
515 "SO_PRIM_STORAGE_NEEDED (Stream 1)",
516 "N stream-out (stream 1) primitives (total)");
517 intel_perf_query_add_stat_reg(query, GFX7_SO_PRIM_STORAGE_NEEDED(2), 1, 1,
518 "SO_PRIM_STORAGE_NEEDED (Stream 2)",
519 "N stream-out (stream 2) primitives (total)");
520 intel_perf_query_add_stat_reg(query, GFX7_SO_PRIM_STORAGE_NEEDED(3), 1, 1,
521 "SO_PRIM_STORAGE_NEEDED (Stream 3)",
522 "N stream-out (stream 3) primitives (total)");
523 intel_perf_query_add_stat_reg(query, GFX7_SO_NUM_PRIMS_WRITTEN(0), 1, 1,
524 "SO_NUM_PRIMS_WRITTEN (Stream 0)",
525 "N stream-out (stream 0) primitives (written)");
526 intel_perf_query_add_stat_reg(query, GFX7_SO_NUM_PRIMS_WRITTEN(1), 1, 1,
527 "SO_NUM_PRIMS_WRITTEN (Stream 1)",
528 "N stream-out (stream 1) primitives (written)");
529 intel_perf_query_add_stat_reg(query, GFX7_SO_NUM_PRIMS_WRITTEN(2), 1, 1,
530 "SO_NUM_PRIMS_WRITTEN (Stream 2)",
531 "N stream-out (stream 2) primitives (written)");
532 intel_perf_query_add_stat_reg(query, GFX7_SO_NUM_PRIMS_WRITTEN(3), 1, 1,
533 "SO_NUM_PRIMS_WRITTEN (Stream 3)",
534 "N stream-out (stream 3) primitives (written)");
535 }
536
537 intel_perf_query_add_basic_stat_reg(query, HS_INVOCATION_COUNT,
538 "N TCS shader invocations");
539 intel_perf_query_add_basic_stat_reg(query, DS_INVOCATION_COUNT,
540 "N TES shader invocations");
541
542 intel_perf_query_add_basic_stat_reg(query, GS_INVOCATION_COUNT,
543 "N geometry shader invocations");
544 intel_perf_query_add_basic_stat_reg(query, GS_PRIMITIVES_COUNT,
545 "N geometry shader primitives emitted");
546
547 intel_perf_query_add_basic_stat_reg(query, CL_INVOCATION_COUNT,
548 "N primitives entering clipping");
549 intel_perf_query_add_basic_stat_reg(query, CL_PRIMITIVES_COUNT,
550 "N primitives leaving clipping");
551
552 if (devinfo->is_haswell || devinfo->ver == 8) {
553 intel_perf_query_add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4,
554 "N fragment shader invocations",
555 "N fragment shader invocations");
556 } else {
557 intel_perf_query_add_basic_stat_reg(query, PS_INVOCATION_COUNT,
558 "N fragment shader invocations");
559 }
560
561 intel_perf_query_add_basic_stat_reg(query, PS_DEPTH_COUNT,
562 "N z-pass fragments");
563
564 if (devinfo->ver >= 7) {
565 intel_perf_query_add_basic_stat_reg(query, CS_INVOCATION_COUNT,
566 "N compute shader invocations");
567 }
568
569 query->data_size = sizeof(uint64_t) * query->n_counters;
570
571 sort_query(query);
572 }
573
574 static int
i915_perf_version(int drm_fd)575 i915_perf_version(int drm_fd)
576 {
577 int tmp;
578 drm_i915_getparam_t gp = {
579 .param = I915_PARAM_PERF_REVISION,
580 .value = &tmp,
581 };
582
583 int ret = intel_ioctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp);
584
585 /* Return 0 if this getparam is not supported, the first version supported
586 * is 1.
587 */
588 return ret < 0 ? 0 : tmp;
589 }
590
591 static void
i915_get_sseu(int drm_fd,struct drm_i915_gem_context_param_sseu * sseu)592 i915_get_sseu(int drm_fd, struct drm_i915_gem_context_param_sseu *sseu)
593 {
594 struct drm_i915_gem_context_param arg = {
595 .param = I915_CONTEXT_PARAM_SSEU,
596 .size = sizeof(*sseu),
597 .value = to_user_pointer(sseu)
598 };
599
600 intel_ioctl(drm_fd, DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM, &arg);
601 }
602
603 static inline int
compare_str_or_null(const char * s1,const char * s2)604 compare_str_or_null(const char *s1, const char *s2)
605 {
606 if (s1 == NULL && s2 == NULL)
607 return 0;
608 if (s1 == NULL)
609 return -1;
610 if (s2 == NULL)
611 return 1;
612
613 return strcmp(s1, s2);
614 }
615
616 static int
compare_counter_categories_and_names(const void * _c1,const void * _c2)617 compare_counter_categories_and_names(const void *_c1, const void *_c2)
618 {
619 const struct intel_perf_query_counter_info *c1 = (const struct intel_perf_query_counter_info *)_c1;
620 const struct intel_perf_query_counter_info *c2 = (const struct intel_perf_query_counter_info *)_c2;
621
622 /* pipeline counters don't have an assigned category */
623 int r = compare_str_or_null(c1->counter->category, c2->counter->category);
624 if (r)
625 return r;
626
627 return strcmp(c1->counter->name, c2->counter->name);
628 }
629
630 static void
build_unique_counter_list(struct intel_perf_config * perf)631 build_unique_counter_list(struct intel_perf_config *perf)
632 {
633 assert(perf->n_queries < 64);
634
635 size_t max_counters = 0;
636
637 for (int q = 0; q < perf->n_queries; q++)
638 max_counters += perf->queries[q].n_counters;
639
640 /*
641 * Allocate big enough array to hold maximum possible number of counters.
642 * We can't alloc it small and realloc when needed because the hash table
643 * below contains pointers to this array.
644 */
645 struct intel_perf_query_counter_info *counter_infos =
646 ralloc_array_size(perf, sizeof(counter_infos[0]), max_counters);
647
648 perf->n_counters = 0;
649
650 struct hash_table *counters_table =
651 _mesa_hash_table_create(perf,
652 _mesa_hash_string,
653 _mesa_key_string_equal);
654 struct hash_entry *entry;
655 for (int q = 0; q < perf->n_queries ; q++) {
656 struct intel_perf_query_info *query = &perf->queries[q];
657
658 for (int c = 0; c < query->n_counters; c++) {
659 struct intel_perf_query_counter *counter;
660 struct intel_perf_query_counter_info *counter_info;
661
662 counter = &query->counters[c];
663 entry = _mesa_hash_table_search(counters_table, counter->symbol_name);
664
665 if (entry) {
666 counter_info = entry->data;
667 counter_info->query_mask |= BITFIELD64_BIT(q);
668 continue;
669 }
670 assert(perf->n_counters < max_counters);
671
672 counter_info = &counter_infos[perf->n_counters++];
673 counter_info->counter = counter;
674 counter_info->query_mask = BITFIELD64_BIT(q);
675
676 counter_info->location.group_idx = q;
677 counter_info->location.counter_idx = c;
678
679 _mesa_hash_table_insert(counters_table, counter->symbol_name, counter_info);
680 }
681 }
682
683 _mesa_hash_table_destroy(counters_table, NULL);
684
685 /* Now we can realloc counter_infos array because hash table doesn't exist. */
686 perf->counter_infos = reralloc_array_size(perf, counter_infos,
687 sizeof(counter_infos[0]), perf->n_counters);
688
689 qsort(perf->counter_infos, perf->n_counters, sizeof(perf->counter_infos[0]),
690 compare_counter_categories_and_names);
691 }
692
693 static bool
oa_metrics_available(struct intel_perf_config * perf,int fd,const struct intel_device_info * devinfo,bool use_register_snapshots)694 oa_metrics_available(struct intel_perf_config *perf, int fd,
695 const struct intel_device_info *devinfo,
696 bool use_register_snapshots)
697 {
698 perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo);
699 bool i915_perf_oa_available = false;
700 struct stat sb;
701
702 perf->i915_query_supported = i915_query_perf_config_supported(perf, fd);
703 perf->i915_perf_version = i915_perf_version(fd);
704
705 /* Record the default SSEU configuration. */
706 i915_get_sseu(fd, &perf->sseu);
707
708 /* The existence of this sysctl parameter implies the kernel supports
709 * the i915 perf interface.
710 */
711 if (stat("/proc/sys/dev/i915/perf_stream_paranoid", &sb) == 0) {
712
713 /* If _paranoid == 1 then on Gfx8+ we won't be able to access OA
714 * metrics unless running as root.
715 */
716 if (devinfo->is_haswell)
717 i915_perf_oa_available = true;
718 else {
719 uint64_t paranoid = 1;
720
721 read_file_uint64("/proc/sys/dev/i915/perf_stream_paranoid", ¶noid);
722
723 if (paranoid == 0 || geteuid() == 0)
724 i915_perf_oa_available = true;
725 }
726
727 perf->platform_supported = oa_register != NULL;
728 }
729
730 return i915_perf_oa_available &&
731 oa_register &&
732 get_sysfs_dev_dir(perf, fd) &&
733 init_oa_sys_vars(perf, devinfo, use_register_snapshots);
734 }
735
736 static void
load_oa_metrics(struct intel_perf_config * perf,int fd,const struct intel_device_info * devinfo)737 load_oa_metrics(struct intel_perf_config *perf, int fd,
738 const struct intel_device_info *devinfo)
739 {
740 int existing_queries = perf->n_queries;
741
742 perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo);
743
744 perf->oa_metrics_table =
745 _mesa_hash_table_create(perf, _mesa_hash_string,
746 _mesa_key_string_equal);
747
748 /* Index all the metric sets mesa knows about before looking to see what
749 * the kernel is advertising.
750 */
751 oa_register(perf);
752
753 if (!INTEL_DEBUG(DEBUG_NO_OACONFIG)) {
754 if (kernel_has_dynamic_config_support(perf, fd))
755 init_oa_configs(perf, fd, devinfo);
756 else
757 enumerate_sysfs_metrics(perf, devinfo);
758 } else {
759 add_all_metrics(perf, devinfo);
760 }
761
762 /* sort counters in each individual group created by this function by name */
763 for (int i = existing_queries; i < perf->n_queries; ++i)
764 sort_query(&perf->queries[i]);
765
766 /* Select a fallback OA metric. Look for the TestOa metric or use the last
767 * one if no present (on HSW).
768 */
769 for (int i = existing_queries; i < perf->n_queries; i++) {
770 if (perf->queries[i].symbol_name &&
771 strcmp(perf->queries[i].symbol_name, "TestOa") == 0) {
772 perf->fallback_raw_oa_metric = perf->queries[i].oa_metrics_set_id;
773 break;
774 }
775 }
776 if (perf->fallback_raw_oa_metric == 0 && perf->n_queries > 0)
777 perf->fallback_raw_oa_metric = perf->queries[perf->n_queries - 1].oa_metrics_set_id;
778 }
779
780 struct intel_perf_registers *
intel_perf_load_configuration(struct intel_perf_config * perf_cfg,int fd,const char * guid)781 intel_perf_load_configuration(struct intel_perf_config *perf_cfg, int fd, const char *guid)
782 {
783 if (!perf_cfg->i915_query_supported)
784 return NULL;
785
786 struct drm_i915_perf_oa_config i915_config = { 0, };
787 if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config))
788 return NULL;
789
790 struct intel_perf_registers *config = rzalloc(NULL, struct intel_perf_registers);
791 config->n_flex_regs = i915_config.n_flex_regs;
792 config->flex_regs = rzalloc_array(config, struct intel_perf_query_register_prog, config->n_flex_regs);
793 config->n_mux_regs = i915_config.n_mux_regs;
794 config->mux_regs = rzalloc_array(config, struct intel_perf_query_register_prog, config->n_mux_regs);
795 config->n_b_counter_regs = i915_config.n_boolean_regs;
796 config->b_counter_regs = rzalloc_array(config, struct intel_perf_query_register_prog, config->n_b_counter_regs);
797
798 /*
799 * struct intel_perf_query_register_prog maps exactly to the tuple of
800 * (register offset, register value) returned by the i915.
801 */
802 i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs);
803 i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs);
804 i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs);
805 if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) {
806 ralloc_free(config);
807 return NULL;
808 }
809
810 return config;
811 }
812
813 uint64_t
intel_perf_store_configuration(struct intel_perf_config * perf_cfg,int fd,const struct intel_perf_registers * config,const char * guid)814 intel_perf_store_configuration(struct intel_perf_config *perf_cfg, int fd,
815 const struct intel_perf_registers *config,
816 const char *guid)
817 {
818 if (guid)
819 return i915_add_config(perf_cfg, fd, config, guid);
820
821 struct mesa_sha1 sha1_ctx;
822 _mesa_sha1_init(&sha1_ctx);
823
824 if (config->flex_regs) {
825 _mesa_sha1_update(&sha1_ctx, config->flex_regs,
826 sizeof(config->flex_regs[0]) *
827 config->n_flex_regs);
828 }
829 if (config->mux_regs) {
830 _mesa_sha1_update(&sha1_ctx, config->mux_regs,
831 sizeof(config->mux_regs[0]) *
832 config->n_mux_regs);
833 }
834 if (config->b_counter_regs) {
835 _mesa_sha1_update(&sha1_ctx, config->b_counter_regs,
836 sizeof(config->b_counter_regs[0]) *
837 config->n_b_counter_regs);
838 }
839
840 uint8_t hash[20];
841 _mesa_sha1_final(&sha1_ctx, hash);
842
843 char formatted_hash[41];
844 _mesa_sha1_format(formatted_hash, hash);
845
846 char generated_guid[37];
847 snprintf(generated_guid, sizeof(generated_guid),
848 "%.8s-%.4s-%.4s-%.4s-%.12s",
849 &formatted_hash[0], &formatted_hash[8],
850 &formatted_hash[8 + 4], &formatted_hash[8 + 4 + 4],
851 &formatted_hash[8 + 4 + 4 + 4]);
852
853 /* Check if already present. */
854 uint64_t id;
855 if (intel_perf_load_metric_id(perf_cfg, generated_guid, &id))
856 return id;
857
858 return i915_add_config(perf_cfg, fd, config, generated_guid);
859 }
860
861 static uint64_t
get_passes_mask(struct intel_perf_config * perf,const uint32_t * counter_indices,uint32_t counter_indices_count)862 get_passes_mask(struct intel_perf_config *perf,
863 const uint32_t *counter_indices,
864 uint32_t counter_indices_count)
865 {
866 uint64_t queries_mask = 0;
867
868 assert(perf->n_queries < 64);
869
870 /* Compute the number of passes by going through all counters N times (with
871 * N the number of queries) to make sure we select the most constraining
872 * counters first and look at the more flexible ones (that could be
873 * obtained from multiple queries) later. That way we minimize the number
874 * of passes required.
875 */
876 for (uint32_t q = 0; q < perf->n_queries; q++) {
877 for (uint32_t i = 0; i < counter_indices_count; i++) {
878 assert(counter_indices[i] < perf->n_counters);
879
880 uint32_t idx = counter_indices[i];
881 if (util_bitcount64(perf->counter_infos[idx].query_mask) != (q + 1))
882 continue;
883
884 if (queries_mask & perf->counter_infos[idx].query_mask)
885 continue;
886
887 queries_mask |= BITFIELD64_BIT(ffsll(perf->counter_infos[idx].query_mask) - 1);
888 }
889 }
890
891 return queries_mask;
892 }
893
894 uint32_t
intel_perf_get_n_passes(struct intel_perf_config * perf,const uint32_t * counter_indices,uint32_t counter_indices_count,struct intel_perf_query_info ** pass_queries)895 intel_perf_get_n_passes(struct intel_perf_config *perf,
896 const uint32_t *counter_indices,
897 uint32_t counter_indices_count,
898 struct intel_perf_query_info **pass_queries)
899 {
900 uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count);
901
902 if (pass_queries) {
903 uint32_t pass = 0;
904 for (uint32_t q = 0; q < perf->n_queries; q++) {
905 if ((1ULL << q) & queries_mask)
906 pass_queries[pass++] = &perf->queries[q];
907 }
908 }
909
910 return util_bitcount64(queries_mask);
911 }
912
913 void
intel_perf_get_counters_passes(struct intel_perf_config * perf,const uint32_t * counter_indices,uint32_t counter_indices_count,struct intel_perf_counter_pass * counter_pass)914 intel_perf_get_counters_passes(struct intel_perf_config *perf,
915 const uint32_t *counter_indices,
916 uint32_t counter_indices_count,
917 struct intel_perf_counter_pass *counter_pass)
918 {
919 uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count);
920 ASSERTED uint32_t n_passes = util_bitcount64(queries_mask);
921
922 for (uint32_t i = 0; i < counter_indices_count; i++) {
923 assert(counter_indices[i] < perf->n_counters);
924
925 uint32_t idx = counter_indices[i];
926 counter_pass[i].counter = perf->counter_infos[idx].counter;
927
928 uint32_t query_idx = ffsll(perf->counter_infos[idx].query_mask & queries_mask) - 1;
929 counter_pass[i].query = &perf->queries[query_idx];
930
931 uint32_t clear_bits = 63 - query_idx;
932 counter_pass[i].pass = util_bitcount64((queries_mask << clear_bits) >> clear_bits) - 1;
933 assert(counter_pass[i].pass < n_passes);
934 }
935 }
936
937 /* Accumulate 32bits OA counters */
938 static inline void
accumulate_uint32(const uint32_t * report0,const uint32_t * report1,uint64_t * accumulator)939 accumulate_uint32(const uint32_t *report0,
940 const uint32_t *report1,
941 uint64_t *accumulator)
942 {
943 *accumulator += (uint32_t)(*report1 - *report0);
944 }
945
946 /* Accumulate 40bits OA counters */
947 static inline void
accumulate_uint40(int a_index,const uint32_t * report0,const uint32_t * report1,uint64_t * accumulator)948 accumulate_uint40(int a_index,
949 const uint32_t *report0,
950 const uint32_t *report1,
951 uint64_t *accumulator)
952 {
953 const uint8_t *high_bytes0 = (uint8_t *)(report0 + 40);
954 const uint8_t *high_bytes1 = (uint8_t *)(report1 + 40);
955 uint64_t high0 = (uint64_t)(high_bytes0[a_index]) << 32;
956 uint64_t high1 = (uint64_t)(high_bytes1[a_index]) << 32;
957 uint64_t value0 = report0[a_index + 4] | high0;
958 uint64_t value1 = report1[a_index + 4] | high1;
959 uint64_t delta;
960
961 if (value0 > value1)
962 delta = (1ULL << 40) + value1 - value0;
963 else
964 delta = value1 - value0;
965
966 *accumulator += delta;
967 }
968
969 static void
gfx8_read_report_clock_ratios(const uint32_t * report,uint64_t * slice_freq_hz,uint64_t * unslice_freq_hz)970 gfx8_read_report_clock_ratios(const uint32_t *report,
971 uint64_t *slice_freq_hz,
972 uint64_t *unslice_freq_hz)
973 {
974 /* The lower 16bits of the RPT_ID field of the OA reports contains a
975 * snapshot of the bits coming from the RP_FREQ_NORMAL register and is
976 * divided this way :
977 *
978 * RPT_ID[31:25]: RP_FREQ_NORMAL[20:14] (low squashed_slice_clock_frequency)
979 * RPT_ID[10:9]: RP_FREQ_NORMAL[22:21] (high squashed_slice_clock_frequency)
980 * RPT_ID[8:0]: RP_FREQ_NORMAL[31:23] (squashed_unslice_clock_frequency)
981 *
982 * RP_FREQ_NORMAL[31:23]: Software Unslice Ratio Request
983 * Multiple of 33.33MHz 2xclk (16 MHz 1xclk)
984 *
985 * RP_FREQ_NORMAL[22:14]: Software Slice Ratio Request
986 * Multiple of 33.33MHz 2xclk (16 MHz 1xclk)
987 */
988
989 uint32_t unslice_freq = report[0] & 0x1ff;
990 uint32_t slice_freq_low = (report[0] >> 25) & 0x7f;
991 uint32_t slice_freq_high = (report[0] >> 9) & 0x3;
992 uint32_t slice_freq = slice_freq_low | (slice_freq_high << 7);
993
994 *slice_freq_hz = slice_freq * 16666667ULL;
995 *unslice_freq_hz = unslice_freq * 16666667ULL;
996 }
997
998 void
intel_perf_query_result_read_frequencies(struct intel_perf_query_result * result,const struct intel_device_info * devinfo,const uint32_t * start,const uint32_t * end)999 intel_perf_query_result_read_frequencies(struct intel_perf_query_result *result,
1000 const struct intel_device_info *devinfo,
1001 const uint32_t *start,
1002 const uint32_t *end)
1003 {
1004 /* Slice/Unslice frequency is only available in the OA reports when the
1005 * "Disable OA reports due to clock ratio change" field in
1006 * OA_DEBUG_REGISTER is set to 1. This is how the kernel programs this
1007 * global register (see drivers/gpu/drm/i915/i915_perf.c)
1008 *
1009 * Documentation says this should be available on Gfx9+ but experimentation
1010 * shows that Gfx8 reports similar values, so we enable it there too.
1011 */
1012 if (devinfo->ver < 8)
1013 return;
1014
1015 gfx8_read_report_clock_ratios(start,
1016 &result->slice_frequency[0],
1017 &result->unslice_frequency[0]);
1018 gfx8_read_report_clock_ratios(end,
1019 &result->slice_frequency[1],
1020 &result->unslice_frequency[1]);
1021 }
1022
1023 static inline bool
can_use_mi_rpc_bc_counters(const struct intel_device_info * devinfo)1024 can_use_mi_rpc_bc_counters(const struct intel_device_info *devinfo)
1025 {
1026 return devinfo->ver <= 11;
1027 }
1028
1029 void
intel_perf_query_result_accumulate(struct intel_perf_query_result * result,const struct intel_perf_query_info * query,const struct intel_device_info * devinfo,const uint32_t * start,const uint32_t * end)1030 intel_perf_query_result_accumulate(struct intel_perf_query_result *result,
1031 const struct intel_perf_query_info *query,
1032 const struct intel_device_info *devinfo,
1033 const uint32_t *start,
1034 const uint32_t *end)
1035 {
1036 int i;
1037
1038 if (result->hw_id == INTEL_PERF_INVALID_CTX_ID &&
1039 start[2] != INTEL_PERF_INVALID_CTX_ID)
1040 result->hw_id = start[2];
1041 if (result->reports_accumulated == 0)
1042 result->begin_timestamp = start[1];
1043 result->reports_accumulated++;
1044
1045 switch (query->oa_format) {
1046 case I915_OA_FORMAT_A32u40_A4u32_B8_C8:
1047 accumulate_uint32(start + 1, end + 1,
1048 result->accumulator + query->gpu_time_offset); /* timestamp */
1049 accumulate_uint32(start + 3, end + 3,
1050 result->accumulator + query->gpu_clock_offset); /* clock */
1051
1052 /* 32x 40bit A counters... */
1053 for (i = 0; i < 32; i++) {
1054 accumulate_uint40(i, start, end,
1055 result->accumulator + query->a_offset + i);
1056 }
1057
1058 /* 4x 32bit A counters... */
1059 for (i = 0; i < 4; i++) {
1060 accumulate_uint32(start + 36 + i, end + 36 + i,
1061 result->accumulator + query->a_offset + 32 + i);
1062 }
1063
1064 if (can_use_mi_rpc_bc_counters(devinfo)) {
1065 /* 8x 32bit B counters */
1066 for (i = 0; i < 8; i++) {
1067 accumulate_uint32(start + 48 + i, end + 48 + i,
1068 result->accumulator + query->b_offset + i);
1069 }
1070
1071 /* 8x 32bit C counters... */
1072 for (i = 0; i < 8; i++) {
1073 accumulate_uint32(start + 56 + i, end + 56 + i,
1074 result->accumulator + query->c_offset + i);
1075 }
1076 }
1077 break;
1078
1079 case I915_OA_FORMAT_A45_B8_C8:
1080 accumulate_uint32(start + 1, end + 1, result->accumulator); /* timestamp */
1081
1082 for (i = 0; i < 61; i++) {
1083 accumulate_uint32(start + 3 + i, end + 3 + i,
1084 result->accumulator + query->a_offset + i);
1085 }
1086 break;
1087
1088 default:
1089 unreachable("Can't accumulate OA counters in unknown format");
1090 }
1091
1092 }
1093
1094 #define GET_FIELD(word, field) (((word) & field ## _MASK) >> field ## _SHIFT)
1095
1096 void
intel_perf_query_result_read_gt_frequency(struct intel_perf_query_result * result,const struct intel_device_info * devinfo,const uint32_t start,const uint32_t end)1097 intel_perf_query_result_read_gt_frequency(struct intel_perf_query_result *result,
1098 const struct intel_device_info *devinfo,
1099 const uint32_t start,
1100 const uint32_t end)
1101 {
1102 switch (devinfo->ver) {
1103 case 7:
1104 case 8:
1105 result->gt_frequency[0] = GET_FIELD(start, GFX7_RPSTAT1_CURR_GT_FREQ) * 50ULL;
1106 result->gt_frequency[1] = GET_FIELD(end, GFX7_RPSTAT1_CURR_GT_FREQ) * 50ULL;
1107 break;
1108 case 9:
1109 case 11:
1110 case 12:
1111 result->gt_frequency[0] = GET_FIELD(start, GFX9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL;
1112 result->gt_frequency[1] = GET_FIELD(end, GFX9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL;
1113 break;
1114 default:
1115 unreachable("unexpected gen");
1116 }
1117
1118 /* Put the numbers into Hz. */
1119 result->gt_frequency[0] *= 1000000ULL;
1120 result->gt_frequency[1] *= 1000000ULL;
1121 }
1122
1123 void
intel_perf_query_result_read_perfcnts(struct intel_perf_query_result * result,const struct intel_perf_query_info * query,const uint64_t * start,const uint64_t * end)1124 intel_perf_query_result_read_perfcnts(struct intel_perf_query_result *result,
1125 const struct intel_perf_query_info *query,
1126 const uint64_t *start,
1127 const uint64_t *end)
1128 {
1129 for (uint32_t i = 0; i < 2; i++) {
1130 uint64_t v0 = start[i] & PERF_CNT_VALUE_MASK;
1131 uint64_t v1 = end[i] & PERF_CNT_VALUE_MASK;
1132
1133 result->accumulator[query->perfcnt_offset + i] = v0 > v1 ?
1134 (PERF_CNT_VALUE_MASK + 1 + v1 - v0) :
1135 (v1 - v0);
1136 }
1137 }
1138
1139 static uint32_t
query_accumulator_offset(const struct intel_perf_query_info * query,enum intel_perf_query_field_type type,uint8_t index)1140 query_accumulator_offset(const struct intel_perf_query_info *query,
1141 enum intel_perf_query_field_type type,
1142 uint8_t index)
1143 {
1144 switch (type) {
1145 case INTEL_PERF_QUERY_FIELD_TYPE_SRM_PERFCNT:
1146 return query->perfcnt_offset + index;
1147 case INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_B:
1148 return query->b_offset + index;
1149 case INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_C:
1150 return query->c_offset + index;
1151 default:
1152 unreachable("Invalid register type");
1153 return 0;
1154 }
1155 }
1156
1157 void
intel_perf_query_result_accumulate_fields(struct intel_perf_query_result * result,const struct intel_perf_query_info * query,const struct intel_device_info * devinfo,const void * start,const void * end,bool no_oa_accumulate)1158 intel_perf_query_result_accumulate_fields(struct intel_perf_query_result *result,
1159 const struct intel_perf_query_info *query,
1160 const struct intel_device_info *devinfo,
1161 const void *start,
1162 const void *end,
1163 bool no_oa_accumulate)
1164 {
1165 struct intel_perf_query_field_layout *layout = &query->perf->query_layout;
1166
1167 for (uint32_t r = 0; r < layout->n_fields; r++) {
1168 struct intel_perf_query_field *field = &layout->fields[r];
1169
1170 if (field->type == INTEL_PERF_QUERY_FIELD_TYPE_MI_RPC) {
1171 intel_perf_query_result_read_frequencies(result, devinfo,
1172 start + field->location,
1173 end + field->location);
1174 /* no_oa_accumulate=true is used when doing GL perf queries, we
1175 * manually parse the OA reports from the OA buffer and substract
1176 * unrelated deltas, so don't accumulate the begin/end reports here.
1177 */
1178 if (!no_oa_accumulate) {
1179 intel_perf_query_result_accumulate(result, query, devinfo,
1180 start + field->location,
1181 end + field->location);
1182 }
1183 } else {
1184 uint64_t v0, v1;
1185
1186 if (field->size == 4) {
1187 v0 = *(const uint32_t *)(start + field->location);
1188 v1 = *(const uint32_t *)(end + field->location);
1189 } else {
1190 assert(field->size == 8);
1191 v0 = *(const uint64_t *)(start + field->location);
1192 v1 = *(const uint64_t *)(end + field->location);
1193 }
1194
1195 if (field->mask) {
1196 v0 = field->mask & v0;
1197 v1 = field->mask & v1;
1198 }
1199
1200 /* RPSTAT is a bit of a special case because its begin/end values
1201 * represent frequencies. We store it in a separate location.
1202 */
1203 if (field->type == INTEL_PERF_QUERY_FIELD_TYPE_SRM_RPSTAT)
1204 intel_perf_query_result_read_gt_frequency(result, devinfo, v0, v1);
1205 else
1206 result->accumulator[query_accumulator_offset(query, field->type, field->index)] = v1 - v0;
1207 }
1208 }
1209 }
1210
1211 void
intel_perf_query_result_clear(struct intel_perf_query_result * result)1212 intel_perf_query_result_clear(struct intel_perf_query_result *result)
1213 {
1214 memset(result, 0, sizeof(*result));
1215 result->hw_id = INTEL_PERF_INVALID_CTX_ID;
1216 }
1217
1218 void
intel_perf_query_result_print_fields(const struct intel_perf_query_info * query,const struct intel_device_info * devinfo,const void * data)1219 intel_perf_query_result_print_fields(const struct intel_perf_query_info *query,
1220 const struct intel_device_info *devinfo,
1221 const void *data)
1222 {
1223 const struct intel_perf_query_field_layout *layout = &query->perf->query_layout;
1224
1225 for (uint32_t r = 0; r < layout->n_fields; r++) {
1226 const struct intel_perf_query_field *field = &layout->fields[r];
1227 const uint32_t *value32 = data + field->location;
1228
1229 switch (field->type) {
1230 case INTEL_PERF_QUERY_FIELD_TYPE_MI_RPC:
1231 fprintf(stderr, "MI_RPC:\n");
1232 fprintf(stderr, " TS: 0x%08x\n", *(value32 + 1));
1233 fprintf(stderr, " CLK: 0x%08x\n", *(value32 + 3));
1234 break;
1235 case INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_B:
1236 fprintf(stderr, "B%u: 0x%08x\n", field->index, *value32);
1237 break;
1238 case INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_C:
1239 fprintf(stderr, "C%u: 0x%08x\n", field->index, *value32);
1240 break;
1241 default:
1242 break;
1243 }
1244 }
1245 }
1246
1247 static int
intel_perf_compare_query_names(const void * v1,const void * v2)1248 intel_perf_compare_query_names(const void *v1, const void *v2)
1249 {
1250 const struct intel_perf_query_info *q1 = v1;
1251 const struct intel_perf_query_info *q2 = v2;
1252
1253 return strcmp(q1->name, q2->name);
1254 }
1255
1256 static inline struct intel_perf_query_field *
add_query_register(struct intel_perf_query_field_layout * layout,enum intel_perf_query_field_type type,uint16_t offset,uint16_t size,uint8_t index)1257 add_query_register(struct intel_perf_query_field_layout *layout,
1258 enum intel_perf_query_field_type type,
1259 uint16_t offset,
1260 uint16_t size,
1261 uint8_t index)
1262 {
1263 /* Align MI_RPC to 64bytes (HW requirement) & 64bit registers to 8bytes
1264 * (shows up nicely in the debugger).
1265 */
1266 if (type == INTEL_PERF_QUERY_FIELD_TYPE_MI_RPC)
1267 layout->size = align(layout->size, 64);
1268 else if (size % 8 == 0)
1269 layout->size = align(layout->size, 8);
1270
1271 layout->fields[layout->n_fields++] = (struct intel_perf_query_field) {
1272 .mmio_offset = offset,
1273 .location = layout->size,
1274 .type = type,
1275 .index = index,
1276 .size = size,
1277 };
1278 layout->size += size;
1279
1280 return &layout->fields[layout->n_fields - 1];
1281 }
1282
1283 static void
intel_perf_init_query_fields(struct intel_perf_config * perf_cfg,const struct intel_device_info * devinfo,bool use_register_snapshots)1284 intel_perf_init_query_fields(struct intel_perf_config *perf_cfg,
1285 const struct intel_device_info *devinfo,
1286 bool use_register_snapshots)
1287 {
1288 struct intel_perf_query_field_layout *layout = &perf_cfg->query_layout;
1289
1290 layout->n_fields = 0;
1291
1292 /* MI_RPC requires a 64byte alignment. */
1293 layout->alignment = 64;
1294
1295 layout->fields = rzalloc_array(perf_cfg, struct intel_perf_query_field, 5 + 16);
1296
1297 add_query_register(layout, INTEL_PERF_QUERY_FIELD_TYPE_MI_RPC,
1298 0, 256, 0);
1299
1300 if (use_register_snapshots) {
1301 if (devinfo->ver <= 11) {
1302 struct intel_perf_query_field *field =
1303 add_query_register(layout,
1304 INTEL_PERF_QUERY_FIELD_TYPE_SRM_PERFCNT,
1305 PERF_CNT_1_DW0, 8, 0);
1306 field->mask = PERF_CNT_VALUE_MASK;
1307
1308 field = add_query_register(layout,
1309 INTEL_PERF_QUERY_FIELD_TYPE_SRM_PERFCNT,
1310 PERF_CNT_2_DW0, 8, 1);
1311 field->mask = PERF_CNT_VALUE_MASK;
1312 }
1313
1314 if (devinfo->ver == 8 && !devinfo->is_cherryview) {
1315 add_query_register(layout,
1316 INTEL_PERF_QUERY_FIELD_TYPE_SRM_RPSTAT,
1317 GFX7_RPSTAT1, 4, 0);
1318 }
1319
1320 if (devinfo->ver >= 9) {
1321 add_query_register(layout,
1322 INTEL_PERF_QUERY_FIELD_TYPE_SRM_RPSTAT,
1323 GFX9_RPSTAT0, 4, 0);
1324 }
1325
1326 if (!can_use_mi_rpc_bc_counters(devinfo)) {
1327 if (devinfo->ver >= 8 && devinfo->ver <= 11) {
1328 for (uint32_t i = 0; i < GFX8_N_OA_PERF_B32; i++) {
1329 add_query_register(layout, INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_B,
1330 GFX8_OA_PERF_B32(i), 4, i);
1331 }
1332 for (uint32_t i = 0; i < GFX8_N_OA_PERF_C32; i++) {
1333 add_query_register(layout, INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_C,
1334 GFX8_OA_PERF_C32(i), 4, i);
1335 }
1336 } else if (devinfo->ver == 12) {
1337 for (uint32_t i = 0; i < GFX12_N_OAG_PERF_B32; i++) {
1338 add_query_register(layout, INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_B,
1339 GFX12_OAG_PERF_B32(i), 4, i);
1340 }
1341 for (uint32_t i = 0; i < GFX12_N_OAG_PERF_C32; i++) {
1342 add_query_register(layout, INTEL_PERF_QUERY_FIELD_TYPE_SRM_OA_C,
1343 GFX12_OAG_PERF_C32(i), 4, i);
1344 }
1345 }
1346 }
1347 }
1348
1349 /* Align the whole package to 64bytes so that 2 snapshots can be put
1350 * together without extract alignment for the user.
1351 */
1352 layout->size = align(layout->size, 64);
1353 }
1354
1355 void
intel_perf_init_metrics(struct intel_perf_config * perf_cfg,const struct intel_device_info * devinfo,int drm_fd,bool include_pipeline_statistics,bool use_register_snapshots)1356 intel_perf_init_metrics(struct intel_perf_config *perf_cfg,
1357 const struct intel_device_info *devinfo,
1358 int drm_fd,
1359 bool include_pipeline_statistics,
1360 bool use_register_snapshots)
1361 {
1362 intel_perf_init_query_fields(perf_cfg, devinfo, use_register_snapshots);
1363
1364 if (include_pipeline_statistics) {
1365 load_pipeline_statistic_metrics(perf_cfg, devinfo);
1366 intel_perf_register_mdapi_statistic_query(perf_cfg, devinfo);
1367 }
1368
1369 bool oa_metrics = oa_metrics_available(perf_cfg, drm_fd, devinfo,
1370 use_register_snapshots);
1371 if (oa_metrics)
1372 load_oa_metrics(perf_cfg, drm_fd, devinfo);
1373
1374 /* sort query groups by name */
1375 qsort(perf_cfg->queries, perf_cfg->n_queries,
1376 sizeof(perf_cfg->queries[0]), intel_perf_compare_query_names);
1377
1378 build_unique_counter_list(perf_cfg);
1379
1380 if (oa_metrics)
1381 intel_perf_register_mdapi_oa_query(perf_cfg, devinfo);
1382 }
1383