| /* |
| * 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 <dirent.h> |
| |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <errno.h> |
| |
| #ifndef HAVE_DIRENT_D_TYPE |
| #include <limits.h> // PATH_MAX |
| #endif |
| |
| #include <drm-uapi/i915_drm.h> |
| |
| #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/mesa-sha1.h" |
| #include "util/u_math.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_PERFMON |
| |
| #define OA_REPORT_INVALID_CTX_ID (0xffffffff) |
| |
| static inline uint64_t to_user_pointer(void *ptr) |
| { |
| return (uintptr_t) ptr; |
| } |
| |
| 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 (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_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_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) |
| { |
| 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, (const struct gen_perf_query_info *)entry->data, id); |
| } else |
| DBG("metric set not known by mesa (skipping)\n"); |
| } |
| |
| closedir(metricsdir); |
| } |
| |
| 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_user_pointer(config->mux_regs); |
| |
| i915_config.n_boolean_regs = config->n_b_counter_regs; |
| i915_config.boolean_regs_ptr = to_user_pointer(config->b_counter_regs); |
| |
| i915_config.n_flex_regs = config->n_flex_regs; |
| i915_config.flex_regs_ptr = to_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) |
| { |
| 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, 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, 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 (!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; |
| |
| 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->is_cannonlake) |
| return gen_oa_register_queries_cnl; |
| 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 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; |
| } |
| |
| 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 bool |
| load_oa_metrics(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); |
| |
| /* 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; |
| } |
| } |
| |
| if (!i915_perf_oa_available || |
| !oa_register || |
| !get_sysfs_dev_dir(perf, fd) || |
| !init_oa_sys_vars(perf, devinfo)) |
| return false; |
| |
| 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 (likely((INTEL_DEBUG & DEBUG_NO_OACONFIG) == 0) && |
| kernel_has_dynamic_config_support(perf, fd)) |
| init_oa_configs(perf, fd); |
| else |
| enumerate_sysfs_metrics(perf); |
| |
| return true; |
| } |
| |
| 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_user_pointer(config->flex_regs); |
| i915_config.mux_regs_ptr = to_user_pointer(config->mux_regs); |
| i915_config.boolean_regs_ptr = to_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); |
| } |
| |
| /* 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, idx = 0; |
| |
| 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 + idx++); /* timestamp */ |
| accumulate_uint32(start + 3, end + 3, result->accumulator + idx++); /* clock */ |
| |
| /* 32x 40bit A counters... */ |
| for (i = 0; i < 32; i++) |
| accumulate_uint40(i, start, end, result->accumulator + idx++); |
| |
| /* 4x 32bit A counters... */ |
| for (i = 0; i < 4; i++) |
| accumulate_uint32(start + 36 + i, end + 36 + i, result->accumulator + idx++); |
| |
| /* 8x 32bit B counters + 8x 32bit C counters... */ |
| for (i = 0; i < 16; i++) |
| accumulate_uint32(start + 48 + i, end + 48 + i, result->accumulator + idx++); |
| 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 + 1 + 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 */ |
| } |
| |
| void |
| gen_perf_init_metrics(struct gen_perf_config *perf_cfg, |
| const struct gen_device_info *devinfo, |
| int drm_fd) |
| { |
| load_pipeline_statistic_metrics(perf_cfg, devinfo); |
| gen_perf_register_mdapi_statistic_query(perf_cfg, devinfo); |
| if (load_oa_metrics(perf_cfg, drm_fd, devinfo)) |
| gen_perf_register_mdapi_oa_query(perf_cfg, devinfo); |
| } |