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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", &paranoid);
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