/* * Copyright © 2018 Intel Corporation * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #include #include #include #include #include #include #ifndef HAVE_DIRENT_D_TYPE #include // PATH_MAX #endif #include #include "common/gen_gem.h" #include "dev/gen_debug.h" #include "dev/gen_device_info.h" #include "perf/gen_perf.h" #include "perf/gen_perf_regs.h" #include "perf/gen_perf_mdapi.h" #include "perf/gen_perf_metrics.h" #include "perf/gen_perf_private.h" #include "util/bitscan.h" #include "util/macros.h" #include "util/mesa-sha1.h" #include "util/u_math.h" #define FILE_DEBUG_FLAG DEBUG_PERFMON #define OA_REPORT_INVALID_CTX_ID (0xffffffff) static bool is_dir_or_link(const struct dirent *entry, const char *parent_dir) { #ifdef HAVE_DIRENT_D_TYPE return entry->d_type == DT_DIR || entry->d_type == DT_LNK; #else struct stat st; char path[PATH_MAX + 1]; snprintf(path, sizeof(path), "%s/%s", parent_dir, entry->d_name); lstat(path, &st); return S_ISDIR(st.st_mode) || S_ISLNK(st.st_mode); #endif } static bool get_sysfs_dev_dir(struct gen_perf_config *perf, int fd) { struct stat sb; int min, maj; DIR *drmdir; struct dirent *drm_entry; int len; perf->sysfs_dev_dir[0] = '\0'; if (INTEL_DEBUG & DEBUG_NO_OACONFIG) return true; if (fstat(fd, &sb)) { DBG("Failed to stat DRM fd\n"); return false; } maj = major(sb.st_rdev); min = minor(sb.st_rdev); if (!S_ISCHR(sb.st_mode)) { DBG("DRM fd is not a character device as expected\n"); return false; } len = snprintf(perf->sysfs_dev_dir, sizeof(perf->sysfs_dev_dir), "/sys/dev/char/%d:%d/device/drm", maj, min); if (len < 0 || len >= sizeof(perf->sysfs_dev_dir)) { DBG("Failed to concatenate sysfs path to drm device\n"); return false; } drmdir = opendir(perf->sysfs_dev_dir); if (!drmdir) { DBG("Failed to open %s: %m\n", perf->sysfs_dev_dir); return false; } while ((drm_entry = readdir(drmdir))) { if (is_dir_or_link(drm_entry, perf->sysfs_dev_dir) && strncmp(drm_entry->d_name, "card", 4) == 0) { len = snprintf(perf->sysfs_dev_dir, sizeof(perf->sysfs_dev_dir), "/sys/dev/char/%d:%d/device/drm/%s", maj, min, drm_entry->d_name); closedir(drmdir); if (len < 0 || len >= sizeof(perf->sysfs_dev_dir)) return false; else return true; } } closedir(drmdir); DBG("Failed to find cardX directory under /sys/dev/char/%d:%d/device/drm\n", maj, min); return false; } static bool read_file_uint64(const char *file, uint64_t *val) { char buf[32]; int fd, n; fd = open(file, 0); if (fd < 0) return false; while ((n = read(fd, buf, sizeof (buf) - 1)) < 0 && errno == EINTR); close(fd); if (n < 0) return false; buf[n] = '\0'; *val = strtoull(buf, NULL, 0); return true; } static bool read_sysfs_drm_device_file_uint64(struct gen_perf_config *perf, const char *file, uint64_t *value) { char buf[512]; int len; len = snprintf(buf, sizeof(buf), "%s/%s", perf->sysfs_dev_dir, file); if (len < 0 || len >= sizeof(buf)) { DBG("Failed to concatenate sys filename to read u64 from\n"); return false; } return read_file_uint64(buf, value); } static void register_oa_config(struct gen_perf_config *perf, const struct gen_device_info *devinfo, const struct gen_perf_query_info *query, uint64_t config_id) { struct gen_perf_query_info *registered_query = gen_perf_append_query_info(perf, 0); *registered_query = *query; registered_query->oa_format = devinfo->gen >= 8 ? I915_OA_FORMAT_A32u40_A4u32_B8_C8 : I915_OA_FORMAT_A45_B8_C8; registered_query->oa_metrics_set_id = config_id; DBG("metric set registered: id = %" PRIu64", guid = %s\n", registered_query->oa_metrics_set_id, query->guid); } static void enumerate_sysfs_metrics(struct gen_perf_config *perf, const struct gen_device_info *devinfo) { DIR *metricsdir = NULL; struct dirent *metric_entry; char buf[256]; int len; len = snprintf(buf, sizeof(buf), "%s/metrics", perf->sysfs_dev_dir); if (len < 0 || len >= sizeof(buf)) { DBG("Failed to concatenate path to sysfs metrics/ directory\n"); return; } metricsdir = opendir(buf); if (!metricsdir) { DBG("Failed to open %s: %m\n", buf); return; } while ((metric_entry = readdir(metricsdir))) { struct hash_entry *entry; if (!is_dir_or_link(metric_entry, buf) || metric_entry->d_name[0] == '.') continue; DBG("metric set: %s\n", metric_entry->d_name); entry = _mesa_hash_table_search(perf->oa_metrics_table, metric_entry->d_name); if (entry) { uint64_t id; if (!gen_perf_load_metric_id(perf, metric_entry->d_name, &id)) { DBG("Failed to read metric set id from %s: %m", buf); continue; } register_oa_config(perf, devinfo, (const struct gen_perf_query_info *)entry->data, id); } else DBG("metric set not known by mesa (skipping)\n"); } closedir(metricsdir); } static void add_all_metrics(struct gen_perf_config *perf, const struct gen_device_info *devinfo) { hash_table_foreach(perf->oa_metrics_table, entry) { const struct gen_perf_query_info *query = entry->data; register_oa_config(perf, devinfo, query, 0); } } static bool kernel_has_dynamic_config_support(struct gen_perf_config *perf, int fd) { uint64_t invalid_config_id = UINT64_MAX; return gen_ioctl(fd, DRM_IOCTL_I915_PERF_REMOVE_CONFIG, &invalid_config_id) < 0 && errno == ENOENT; } static int i915_query_items(struct gen_perf_config *perf, int fd, struct drm_i915_query_item *items, uint32_t n_items) { struct drm_i915_query q = { .num_items = n_items, .items_ptr = to_user_pointer(items), }; return gen_ioctl(fd, DRM_IOCTL_I915_QUERY, &q); } static bool i915_query_perf_config_supported(struct gen_perf_config *perf, int fd) { struct drm_i915_query_item item = { .query_id = DRM_I915_QUERY_PERF_CONFIG, .flags = DRM_I915_QUERY_PERF_CONFIG_LIST, }; return i915_query_items(perf, fd, &item, 1) == 0 && item.length > 0; } static bool i915_query_perf_config_data(struct gen_perf_config *perf, int fd, const char *guid, struct drm_i915_perf_oa_config *config) { struct { struct drm_i915_query_perf_config query; struct drm_i915_perf_oa_config config; } item_data; struct drm_i915_query_item item = { .query_id = DRM_I915_QUERY_PERF_CONFIG, .flags = DRM_I915_QUERY_PERF_CONFIG_DATA_FOR_UUID, .data_ptr = to_user_pointer(&item_data), .length = sizeof(item_data), }; memset(&item_data, 0, sizeof(item_data)); memcpy(item_data.query.uuid, guid, sizeof(item_data.query.uuid)); memcpy(&item_data.config, config, sizeof(item_data.config)); if (!(i915_query_items(perf, fd, &item, 1) == 0 && item.length > 0)) return false; memcpy(config, &item_data.config, sizeof(item_data.config)); return true; } bool gen_perf_load_metric_id(struct gen_perf_config *perf_cfg, const char *guid, uint64_t *metric_id) { char config_path[280]; snprintf(config_path, sizeof(config_path), "%s/metrics/%s/id", perf_cfg->sysfs_dev_dir, guid); /* Don't recreate already loaded configs. */ return read_file_uint64(config_path, metric_id); } static uint64_t i915_add_config(struct gen_perf_config *perf, int fd, const struct gen_perf_registers *config, const char *guid) { struct drm_i915_perf_oa_config i915_config = { 0, }; memcpy(i915_config.uuid, guid, sizeof(i915_config.uuid)); i915_config.n_mux_regs = config->n_mux_regs; i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs); i915_config.n_boolean_regs = config->n_b_counter_regs; i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs); i915_config.n_flex_regs = config->n_flex_regs; i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs); int ret = gen_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &i915_config); return ret > 0 ? ret : 0; } static void init_oa_configs(struct gen_perf_config *perf, int fd, const struct gen_device_info *devinfo) { hash_table_foreach(perf->oa_metrics_table, entry) { const struct gen_perf_query_info *query = entry->data; uint64_t config_id; if (gen_perf_load_metric_id(perf, query->guid, &config_id)) { DBG("metric set: %s (already loaded)\n", query->guid); register_oa_config(perf, devinfo, query, config_id); continue; } int ret = i915_add_config(perf, fd, &query->config, query->guid); if (ret < 0) { DBG("Failed to load \"%s\" (%s) metrics set in kernel: %s\n", query->name, query->guid, strerror(errno)); continue; } register_oa_config(perf, devinfo, query, ret); DBG("metric set: %s (added)\n", query->guid); } } static void compute_topology_builtins(struct gen_perf_config *perf, const struct gen_device_info *devinfo) { perf->sys_vars.slice_mask = devinfo->slice_masks; perf->sys_vars.n_eu_slices = devinfo->num_slices; for (int i = 0; i < sizeof(devinfo->subslice_masks[i]); i++) { perf->sys_vars.n_eu_sub_slices += __builtin_popcount(devinfo->subslice_masks[i]); } for (int i = 0; i < sizeof(devinfo->eu_masks); i++) perf->sys_vars.n_eus += __builtin_popcount(devinfo->eu_masks[i]); perf->sys_vars.eu_threads_count = devinfo->num_thread_per_eu; /* The subslice mask builtin contains bits for all slices. Prior to Gen11 * it had groups of 3bits for each slice, on Gen11 it's 8bits for each * slice. * * Ideally equations would be updated to have a slice/subslice query * function/operator. */ perf->sys_vars.subslice_mask = 0; int bits_per_subslice = devinfo->gen == 11 ? 8 : 3; for (int s = 0; s < util_last_bit(devinfo->slice_masks); s++) { for (int ss = 0; ss < (devinfo->subslice_slice_stride * 8); ss++) { if (gen_device_info_subslice_available(devinfo, s, ss)) perf->sys_vars.subslice_mask |= 1ULL << (s * bits_per_subslice + ss); } } } static bool init_oa_sys_vars(struct gen_perf_config *perf, const struct gen_device_info *devinfo) { uint64_t min_freq_mhz = 0, max_freq_mhz = 0; if (!(INTEL_DEBUG & DEBUG_NO_OACONFIG)) { if (!read_sysfs_drm_device_file_uint64(perf, "gt_min_freq_mhz", &min_freq_mhz)) return false; if (!read_sysfs_drm_device_file_uint64(perf, "gt_max_freq_mhz", &max_freq_mhz)) return false; } else { min_freq_mhz = 300; max_freq_mhz = 1000; } memset(&perf->sys_vars, 0, sizeof(perf->sys_vars)); perf->sys_vars.gt_min_freq = min_freq_mhz * 1000000; perf->sys_vars.gt_max_freq = max_freq_mhz * 1000000; perf->sys_vars.timestamp_frequency = devinfo->timestamp_frequency; perf->sys_vars.revision = devinfo->revision; compute_topology_builtins(perf, devinfo); return true; } typedef void (*perf_register_oa_queries_t)(struct gen_perf_config *); static perf_register_oa_queries_t get_register_queries_function(const struct gen_device_info *devinfo) { if (devinfo->is_haswell) return gen_oa_register_queries_hsw; if (devinfo->is_cherryview) return gen_oa_register_queries_chv; if (devinfo->is_broadwell) return gen_oa_register_queries_bdw; if (devinfo->is_broxton) return gen_oa_register_queries_bxt; if (devinfo->is_skylake) { if (devinfo->gt == 2) return gen_oa_register_queries_sklgt2; if (devinfo->gt == 3) return gen_oa_register_queries_sklgt3; if (devinfo->gt == 4) return gen_oa_register_queries_sklgt4; } if (devinfo->is_kabylake) { if (devinfo->gt == 2) return gen_oa_register_queries_kblgt2; if (devinfo->gt == 3) return gen_oa_register_queries_kblgt3; } if (devinfo->is_geminilake) return gen_oa_register_queries_glk; if (devinfo->is_coffeelake) { if (devinfo->gt == 2) return gen_oa_register_queries_cflgt2; if (devinfo->gt == 3) return gen_oa_register_queries_cflgt3; } if (devinfo->gen == 11) { if (devinfo->is_elkhartlake) return gen_oa_register_queries_lkf; return gen_oa_register_queries_icl; } if (devinfo->gen == 12) return gen_oa_register_queries_tgl; return NULL; } static int gen_perf_compare_counter_names(const void *v1, const void *v2) { const struct gen_perf_query_counter *c1 = v1; const struct gen_perf_query_counter *c2 = v2; return strcmp(c1->name, c2->name); } static void sort_query(struct gen_perf_query_info *q) { qsort(q->counters, q->n_counters, sizeof(q->counters[0]), gen_perf_compare_counter_names); } static void load_pipeline_statistic_metrics(struct gen_perf_config *perf_cfg, const struct gen_device_info *devinfo) { struct gen_perf_query_info *query = gen_perf_append_query_info(perf_cfg, MAX_STAT_COUNTERS); query->kind = GEN_PERF_QUERY_TYPE_PIPELINE; query->name = "Pipeline Statistics Registers"; gen_perf_query_add_basic_stat_reg(query, IA_VERTICES_COUNT, "N vertices submitted"); gen_perf_query_add_basic_stat_reg(query, IA_PRIMITIVES_COUNT, "N primitives submitted"); gen_perf_query_add_basic_stat_reg(query, VS_INVOCATION_COUNT, "N vertex shader invocations"); if (devinfo->gen == 6) { gen_perf_query_add_stat_reg(query, GEN6_SO_PRIM_STORAGE_NEEDED, 1, 1, "SO_PRIM_STORAGE_NEEDED", "N geometry shader stream-out primitives (total)"); gen_perf_query_add_stat_reg(query, GEN6_SO_NUM_PRIMS_WRITTEN, 1, 1, "SO_NUM_PRIMS_WRITTEN", "N geometry shader stream-out primitives (written)"); } else { gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(0), 1, 1, "SO_PRIM_STORAGE_NEEDED (Stream 0)", "N stream-out (stream 0) primitives (total)"); gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(1), 1, 1, "SO_PRIM_STORAGE_NEEDED (Stream 1)", "N stream-out (stream 1) primitives (total)"); gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(2), 1, 1, "SO_PRIM_STORAGE_NEEDED (Stream 2)", "N stream-out (stream 2) primitives (total)"); gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(3), 1, 1, "SO_PRIM_STORAGE_NEEDED (Stream 3)", "N stream-out (stream 3) primitives (total)"); gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(0), 1, 1, "SO_NUM_PRIMS_WRITTEN (Stream 0)", "N stream-out (stream 0) primitives (written)"); gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(1), 1, 1, "SO_NUM_PRIMS_WRITTEN (Stream 1)", "N stream-out (stream 1) primitives (written)"); gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(2), 1, 1, "SO_NUM_PRIMS_WRITTEN (Stream 2)", "N stream-out (stream 2) primitives (written)"); gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(3), 1, 1, "SO_NUM_PRIMS_WRITTEN (Stream 3)", "N stream-out (stream 3) primitives (written)"); } gen_perf_query_add_basic_stat_reg(query, HS_INVOCATION_COUNT, "N TCS shader invocations"); gen_perf_query_add_basic_stat_reg(query, DS_INVOCATION_COUNT, "N TES shader invocations"); gen_perf_query_add_basic_stat_reg(query, GS_INVOCATION_COUNT, "N geometry shader invocations"); gen_perf_query_add_basic_stat_reg(query, GS_PRIMITIVES_COUNT, "N geometry shader primitives emitted"); gen_perf_query_add_basic_stat_reg(query, CL_INVOCATION_COUNT, "N primitives entering clipping"); gen_perf_query_add_basic_stat_reg(query, CL_PRIMITIVES_COUNT, "N primitives leaving clipping"); if (devinfo->is_haswell || devinfo->gen == 8) { gen_perf_query_add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4, "N fragment shader invocations", "N fragment shader invocations"); } else { gen_perf_query_add_basic_stat_reg(query, PS_INVOCATION_COUNT, "N fragment shader invocations"); } gen_perf_query_add_basic_stat_reg(query, PS_DEPTH_COUNT, "N z-pass fragments"); if (devinfo->gen >= 7) { gen_perf_query_add_basic_stat_reg(query, CS_INVOCATION_COUNT, "N compute shader invocations"); } query->data_size = sizeof(uint64_t) * query->n_counters; sort_query(query); } static int i915_perf_version(int drm_fd) { int tmp; drm_i915_getparam_t gp = { .param = I915_PARAM_PERF_REVISION, .value = &tmp, }; int ret = gen_ioctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp); /* Return 0 if this getparam is not supported, the first version supported * is 1. */ return ret < 0 ? 0 : tmp; } static void i915_get_sseu(int drm_fd, struct drm_i915_gem_context_param_sseu *sseu) { struct drm_i915_gem_context_param arg = { .param = I915_CONTEXT_PARAM_SSEU, .size = sizeof(*sseu), .value = to_user_pointer(sseu) }; gen_ioctl(drm_fd, DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM, &arg); } static inline int compare_str_or_null(const char *s1, const char *s2) { if (s1 == NULL && s2 == NULL) return 0; if (s1 == NULL) return -1; if (s2 == NULL) return 1; return strcmp(s1, s2); } static int compare_counter_categories_and_names(const void *_c1, const void *_c2) { const struct gen_perf_query_counter_info *c1 = (const struct gen_perf_query_counter_info *)_c1; const struct gen_perf_query_counter_info *c2 = (const struct gen_perf_query_counter_info *)_c2; /* pipeline counters don't have an assigned category */ int r = compare_str_or_null(c1->counter->category, c2->counter->category); if (r) return r; return strcmp(c1->counter->name, c2->counter->name); } static void build_unique_counter_list(struct gen_perf_config *perf) { assert(perf->n_queries < 64); size_t max_counters = 0; for (int q = 0; q < perf->n_queries; q++) max_counters += perf->queries[q].n_counters; /* * Allocate big enough array to hold maximum possible number of counters. * We can't alloc it small and realloc when needed because the hash table * below contains pointers to this array. */ struct gen_perf_query_counter_info *counter_infos = ralloc_array_size(perf, sizeof(counter_infos[0]), max_counters); perf->n_counters = 0; struct hash_table *counters_table = _mesa_hash_table_create(perf, _mesa_hash_string, _mesa_key_string_equal); struct hash_entry *entry; for (int q = 0; q < perf->n_queries ; q++) { struct gen_perf_query_info *query = &perf->queries[q]; for (int c = 0; c < query->n_counters; c++) { struct gen_perf_query_counter *counter; struct gen_perf_query_counter_info *counter_info; counter = &query->counters[c]; entry = _mesa_hash_table_search(counters_table, counter->symbol_name); if (entry) { counter_info = entry->data; counter_info->query_mask |= BITFIELD64_BIT(q); continue; } assert(perf->n_counters < max_counters); counter_info = &counter_infos[perf->n_counters++]; counter_info->counter = counter; counter_info->query_mask = BITFIELD64_BIT(q); counter_info->location.group_idx = q; counter_info->location.counter_idx = c; _mesa_hash_table_insert(counters_table, counter->symbol_name, counter_info); } } _mesa_hash_table_destroy(counters_table, NULL); /* Now we can realloc counter_infos array because hash table doesn't exist. */ perf->counter_infos = reralloc_array_size(perf, counter_infos, sizeof(counter_infos[0]), perf->n_counters); qsort(perf->counter_infos, perf->n_counters, sizeof(perf->counter_infos[0]), compare_counter_categories_and_names); } static bool oa_metrics_available(struct gen_perf_config *perf, int fd, const struct gen_device_info *devinfo) { perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo); bool i915_perf_oa_available = false; struct stat sb; perf->i915_query_supported = i915_query_perf_config_supported(perf, fd); perf->i915_perf_version = i915_perf_version(fd); /* Record the default SSEU configuration. */ i915_get_sseu(fd, &perf->sseu); /* The existence of this sysctl parameter implies the kernel supports * the i915 perf interface. */ if (stat("/proc/sys/dev/i915/perf_stream_paranoid", &sb) == 0) { /* If _paranoid == 1 then on Gen8+ we won't be able to access OA * metrics unless running as root. */ if (devinfo->is_haswell) i915_perf_oa_available = true; else { uint64_t paranoid = 1; read_file_uint64("/proc/sys/dev/i915/perf_stream_paranoid", ¶noid); if (paranoid == 0 || geteuid() == 0) i915_perf_oa_available = true; } perf->platform_supported = oa_register != NULL; } return i915_perf_oa_available && oa_register && get_sysfs_dev_dir(perf, fd) && init_oa_sys_vars(perf, devinfo); } static void load_oa_metrics(struct gen_perf_config *perf, int fd, const struct gen_device_info *devinfo) { int existing_queries = perf->n_queries; perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo); perf->oa_metrics_table = _mesa_hash_table_create(perf, _mesa_hash_string, _mesa_key_string_equal); /* Index all the metric sets mesa knows about before looking to see what * the kernel is advertising. */ oa_register(perf); if (!(INTEL_DEBUG & DEBUG_NO_OACONFIG)) { if (kernel_has_dynamic_config_support(perf, fd)) init_oa_configs(perf, fd, devinfo); else enumerate_sysfs_metrics(perf, devinfo); } else { add_all_metrics(perf, devinfo); } /* sort counters in each individual group created by this function by name */ for (int i = existing_queries; i < perf->n_queries; ++i) sort_query(&perf->queries[i]); /* Select a fallback OA metric. Look for the TestOa metric or use the last * one if no present (on HSW). */ for (int i = existing_queries; i < perf->n_queries; i++) { if (perf->queries[i].symbol_name && strcmp(perf->queries[i].symbol_name, "TestOa") == 0) { perf->fallback_raw_oa_metric = perf->queries[i].oa_metrics_set_id; break; } } if (perf->fallback_raw_oa_metric == 0 && perf->n_queries > 0) perf->fallback_raw_oa_metric = perf->queries[perf->n_queries - 1].oa_metrics_set_id; } struct gen_perf_registers * gen_perf_load_configuration(struct gen_perf_config *perf_cfg, int fd, const char *guid) { if (!perf_cfg->i915_query_supported) return NULL; struct drm_i915_perf_oa_config i915_config = { 0, }; if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) return NULL; struct gen_perf_registers *config = rzalloc(NULL, struct gen_perf_registers); config->n_flex_regs = i915_config.n_flex_regs; config->flex_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_flex_regs); config->n_mux_regs = i915_config.n_mux_regs; config->mux_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_mux_regs); config->n_b_counter_regs = i915_config.n_boolean_regs; config->b_counter_regs = rzalloc_array(config, struct gen_perf_query_register_prog, config->n_b_counter_regs); /* * struct gen_perf_query_register_prog maps exactly to the tuple of * (register offset, register value) returned by the i915. */ i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs); i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs); i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs); if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) { ralloc_free(config); return NULL; } return config; } uint64_t gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd, const struct gen_perf_registers *config, const char *guid) { if (guid) return i915_add_config(perf_cfg, fd, config, guid); struct mesa_sha1 sha1_ctx; _mesa_sha1_init(&sha1_ctx); if (config->flex_regs) { _mesa_sha1_update(&sha1_ctx, config->flex_regs, sizeof(config->flex_regs[0]) * config->n_flex_regs); } if (config->mux_regs) { _mesa_sha1_update(&sha1_ctx, config->mux_regs, sizeof(config->mux_regs[0]) * config->n_mux_regs); } if (config->b_counter_regs) { _mesa_sha1_update(&sha1_ctx, config->b_counter_regs, sizeof(config->b_counter_regs[0]) * config->n_b_counter_regs); } uint8_t hash[20]; _mesa_sha1_final(&sha1_ctx, hash); char formatted_hash[41]; _mesa_sha1_format(formatted_hash, hash); char generated_guid[37]; snprintf(generated_guid, sizeof(generated_guid), "%.8s-%.4s-%.4s-%.4s-%.12s", &formatted_hash[0], &formatted_hash[8], &formatted_hash[8 + 4], &formatted_hash[8 + 4 + 4], &formatted_hash[8 + 4 + 4 + 4]); /* Check if already present. */ uint64_t id; if (gen_perf_load_metric_id(perf_cfg, generated_guid, &id)) return id; return i915_add_config(perf_cfg, fd, config, generated_guid); } static uint64_t get_passes_mask(struct gen_perf_config *perf, const uint32_t *counter_indices, uint32_t counter_indices_count) { uint64_t queries_mask = 0; assert(perf->n_queries < 64); /* Compute the number of passes by going through all counters N times (with * N the number of queries) to make sure we select the most constraining * counters first and look at the more flexible ones (that could be * obtained from multiple queries) later. That way we minimize the number * of passes required. */ for (uint32_t q = 0; q < perf->n_queries; q++) { for (uint32_t i = 0; i < counter_indices_count; i++) { assert(counter_indices[i] < perf->n_counters); uint32_t idx = counter_indices[i]; if (__builtin_popcount(perf->counter_infos[idx].query_mask) != (q + 1)) continue; if (queries_mask & perf->counter_infos[idx].query_mask) continue; queries_mask |= BITFIELD64_BIT(ffsll(perf->counter_infos[idx].query_mask) - 1); } } return queries_mask; } uint32_t gen_perf_get_n_passes(struct gen_perf_config *perf, const uint32_t *counter_indices, uint32_t counter_indices_count, struct gen_perf_query_info **pass_queries) { uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count); if (pass_queries) { uint32_t pass = 0; for (uint32_t q = 0; q < perf->n_queries; q++) { if ((1ULL << q) & queries_mask) pass_queries[pass++] = &perf->queries[q]; } } return __builtin_popcount(queries_mask); } void gen_perf_get_counters_passes(struct gen_perf_config *perf, const uint32_t *counter_indices, uint32_t counter_indices_count, struct gen_perf_counter_pass *counter_pass) { uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count); ASSERTED uint32_t n_passes = __builtin_popcount(queries_mask); for (uint32_t i = 0; i < counter_indices_count; i++) { assert(counter_indices[i] < perf->n_counters); uint32_t idx = counter_indices[i]; counter_pass[i].counter = perf->counter_infos[idx].counter; uint32_t query_idx = ffsll(perf->counter_infos[idx].query_mask & queries_mask) - 1; counter_pass[i].query = &perf->queries[query_idx]; uint32_t clear_bits = 63 - query_idx; counter_pass[i].pass = __builtin_popcount((queries_mask << clear_bits) >> clear_bits) - 1; assert(counter_pass[i].pass < n_passes); } } /* Accumulate 32bits OA counters */ static inline void accumulate_uint32(const uint32_t *report0, const uint32_t *report1, uint64_t *accumulator) { *accumulator += (uint32_t)(*report1 - *report0); } /* Accumulate 40bits OA counters */ static inline void accumulate_uint40(int a_index, const uint32_t *report0, const uint32_t *report1, uint64_t *accumulator) { const uint8_t *high_bytes0 = (uint8_t *)(report0 + 40); const uint8_t *high_bytes1 = (uint8_t *)(report1 + 40); uint64_t high0 = (uint64_t)(high_bytes0[a_index]) << 32; uint64_t high1 = (uint64_t)(high_bytes1[a_index]) << 32; uint64_t value0 = report0[a_index + 4] | high0; uint64_t value1 = report1[a_index + 4] | high1; uint64_t delta; if (value0 > value1) delta = (1ULL << 40) + value1 - value0; else delta = value1 - value0; *accumulator += delta; } static void gen8_read_report_clock_ratios(const uint32_t *report, uint64_t *slice_freq_hz, uint64_t *unslice_freq_hz) { /* The lower 16bits of the RPT_ID field of the OA reports contains a * snapshot of the bits coming from the RP_FREQ_NORMAL register and is * divided this way : * * RPT_ID[31:25]: RP_FREQ_NORMAL[20:14] (low squashed_slice_clock_frequency) * RPT_ID[10:9]: RP_FREQ_NORMAL[22:21] (high squashed_slice_clock_frequency) * RPT_ID[8:0]: RP_FREQ_NORMAL[31:23] (squashed_unslice_clock_frequency) * * RP_FREQ_NORMAL[31:23]: Software Unslice Ratio Request * Multiple of 33.33MHz 2xclk (16 MHz 1xclk) * * RP_FREQ_NORMAL[22:14]: Software Slice Ratio Request * Multiple of 33.33MHz 2xclk (16 MHz 1xclk) */ uint32_t unslice_freq = report[0] & 0x1ff; uint32_t slice_freq_low = (report[0] >> 25) & 0x7f; uint32_t slice_freq_high = (report[0] >> 9) & 0x3; uint32_t slice_freq = slice_freq_low | (slice_freq_high << 7); *slice_freq_hz = slice_freq * 16666667ULL; *unslice_freq_hz = unslice_freq * 16666667ULL; } void gen_perf_query_result_read_frequencies(struct gen_perf_query_result *result, const struct gen_device_info *devinfo, const uint32_t *start, const uint32_t *end) { /* Slice/Unslice frequency is only available in the OA reports when the * "Disable OA reports due to clock ratio change" field in * OA_DEBUG_REGISTER is set to 1. This is how the kernel programs this * global register (see drivers/gpu/drm/i915/i915_perf.c) * * Documentation says this should be available on Gen9+ but experimentation * shows that Gen8 reports similar values, so we enable it there too. */ if (devinfo->gen < 8) return; gen8_read_report_clock_ratios(start, &result->slice_frequency[0], &result->unslice_frequency[0]); gen8_read_report_clock_ratios(end, &result->slice_frequency[1], &result->unslice_frequency[1]); } void gen_perf_query_result_accumulate(struct gen_perf_query_result *result, const struct gen_perf_query_info *query, const uint32_t *start, const uint32_t *end) { int i; if (result->hw_id == OA_REPORT_INVALID_CTX_ID && start[2] != OA_REPORT_INVALID_CTX_ID) result->hw_id = start[2]; if (result->reports_accumulated == 0) result->begin_timestamp = start[1]; result->reports_accumulated++; switch (query->oa_format) { case I915_OA_FORMAT_A32u40_A4u32_B8_C8: accumulate_uint32(start + 1, end + 1, result->accumulator + query->gpu_time_offset); /* timestamp */ accumulate_uint32(start + 3, end + 3, result->accumulator + query->gpu_clock_offset); /* clock */ /* 32x 40bit A counters... */ for (i = 0; i < 32; i++) { accumulate_uint40(i, start, end, result->accumulator + query->a_offset + i); } /* 4x 32bit A counters... */ for (i = 0; i < 4; i++) { accumulate_uint32(start + 36 + i, end + 36 + i, result->accumulator + query->a_offset + 32 + i); } /* 8x 32bit B counters */ for (i = 0; i < 8; i++) { accumulate_uint32(start + 48 + i, end + 48 + i, result->accumulator + query->b_offset + i); } /* 8x 32bit C counters... */ for (i = 0; i < 8; i++) { accumulate_uint32(start + 56 + i, end + 56 + i, result->accumulator + query->c_offset + i); } break; case I915_OA_FORMAT_A45_B8_C8: accumulate_uint32(start + 1, end + 1, result->accumulator); /* timestamp */ for (i = 0; i < 61; i++) { accumulate_uint32(start + 3 + i, end + 3 + i, result->accumulator + query->a_offset + i); } break; default: unreachable("Can't accumulate OA counters in unknown format"); } } void gen_perf_query_result_clear(struct gen_perf_query_result *result) { memset(result, 0, sizeof(*result)); result->hw_id = OA_REPORT_INVALID_CTX_ID; /* invalid */ } static int gen_perf_compare_query_names(const void *v1, const void *v2) { const struct gen_perf_query_info *q1 = v1; const struct gen_perf_query_info *q2 = v2; return strcmp(q1->name, q2->name); } void gen_perf_init_metrics(struct gen_perf_config *perf_cfg, const struct gen_device_info *devinfo, int drm_fd, bool include_pipeline_statistics) { if (include_pipeline_statistics) { load_pipeline_statistic_metrics(perf_cfg, devinfo); gen_perf_register_mdapi_statistic_query(perf_cfg, devinfo); } bool oa_metrics = oa_metrics_available(perf_cfg, drm_fd, devinfo); if (oa_metrics) load_oa_metrics(perf_cfg, drm_fd, devinfo); /* sort query groups by name */ qsort(perf_cfg->queries, perf_cfg->n_queries, sizeof(perf_cfg->queries[0]), gen_perf_compare_query_names); build_unique_counter_list(perf_cfg); if (oa_metrics) gen_perf_register_mdapi_oa_query(perf_cfg, devinfo); }