#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 "gen_perf.h"
-#include "perf/gen_perf_mdapi.h"
-#include "perf/gen_perf_metrics.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 MI_RPC_BO_SIZE 4096
-#define MI_FREQ_START_OFFSET_BYTES (3072)
-#define MI_RPC_BO_END_OFFSET_BYTES (MI_RPC_BO_SIZE / 2)
-#define MI_FREQ_END_OFFSET_BYTES (3076)
-
-#define INTEL_MASK(high, low) (((1u<<((high)-(low)+1))-1)<<(low))
-
-#define GEN7_RPSTAT1 0xA01C
-#define GEN7_RPSTAT1_CURR_GT_FREQ_SHIFT 7
-#define GEN7_RPSTAT1_CURR_GT_FREQ_MASK INTEL_MASK(13, 7)
-#define GEN7_RPSTAT1_PREV_GT_FREQ_SHIFT 0
-#define GEN7_RPSTAT1_PREV_GT_FREQ_MASK INTEL_MASK(6, 0)
-
-#define GEN9_RPSTAT0 0xA01C
-#define GEN9_RPSTAT0_CURR_GT_FREQ_SHIFT 23
-#define GEN9_RPSTAT0_CURR_GT_FREQ_MASK INTEL_MASK(31, 23)
-#define GEN9_RPSTAT0_PREV_GT_FREQ_SHIFT 0
-#define GEN9_RPSTAT0_PREV_GT_FREQ_MASK INTEL_MASK(8, 0)
-
-#define GEN6_SO_PRIM_STORAGE_NEEDED 0x2280
-#define GEN7_SO_PRIM_STORAGE_NEEDED(n) (0x5240 + (n) * 8)
-#define GEN6_SO_NUM_PRIMS_WRITTEN 0x2288
-#define GEN7_SO_NUM_PRIMS_WRITTEN(n) (0x5200 + (n) * 8)
-
-#define MAP_READ (1 << 0)
-#define MAP_WRITE (1 << 1)
-
-/**
- * Periodic OA samples are read() into these buffer structures via the
- * i915 perf kernel interface and appended to the
- * perf_ctx->sample_buffers linked list. When we process the
- * results of an OA metrics query we need to consider all the periodic
- * samples between the Begin and End MI_REPORT_PERF_COUNT command
- * markers.
- *
- * 'Periodic' is a simplification as there are other automatic reports
- * written by the hardware also buffered here.
- *
- * Considering three queries, A, B and C:
- *
- * Time ---->
- * ________________A_________________
- * | |
- * | ________B_________ _____C___________
- * | | | | | |
- *
- * And an illustration of sample buffers read over this time frame:
- * [HEAD ][ ][ ][ ][ ][ ][ ][ ][TAIL ]
- *
- * These nodes may hold samples for query A:
- * [ ][ ][ A ][ A ][ A ][ A ][ A ][ ][ ]
- *
- * These nodes may hold samples for query B:
- * [ ][ ][ B ][ B ][ B ][ ][ ][ ][ ]
- *
- * These nodes may hold samples for query C:
- * [ ][ ][ ][ ][ ][ C ][ C ][ C ][ ]
- *
- * The illustration assumes we have an even distribution of periodic
- * samples so all nodes have the same size plotted against time:
- *
- * Note, to simplify code, the list is never empty.
- *
- * With overlapping queries we can see that periodic OA reports may
- * relate to multiple queries and care needs to be take to keep
- * track of sample buffers until there are no queries that might
- * depend on their contents.
- *
- * We use a node ref counting system where a reference ensures that a
- * node and all following nodes can't be freed/recycled until the
- * reference drops to zero.
- *
- * E.g. with a ref of one here:
- * [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ]
- *
- * These nodes could be freed or recycled ("reaped"):
- * [ 0 ][ 0 ]
- *
- * These must be preserved until the leading ref drops to zero:
- * [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ]
- *
- * When a query starts we take a reference on the current tail of
- * the list, knowing that no already-buffered samples can possibly
- * relate to the newly-started query. A pointer to this node is
- * also saved in the query object's ->oa.samples_head.
- *
- * E.g. starting query A while there are two nodes in .sample_buffers:
- * ________________A________
- * |
- *
- * [ 0 ][ 1 ]
- * ^_______ Add a reference and store pointer to node in
- * A->oa.samples_head
- *
- * Moving forward to when the B query starts with no new buffer nodes:
- * (for reference, i915 perf reads() are only done when queries finish)
- * ________________A_______
- * | ________B___
- * | |
- *
- * [ 0 ][ 2 ]
- * ^_______ Add a reference and store pointer to
- * node in B->oa.samples_head
- *
- * Once a query is finished, after an OA query has become 'Ready',
- * once the End OA report has landed and after we we have processed
- * all the intermediate periodic samples then we drop the
- * ->oa.samples_head reference we took at the start.
- *
- * So when the B query has finished we have:
- * ________________A________
- * | ______B___________
- * | | |
- * [ 0 ][ 1 ][ 0 ][ 0 ][ 0 ]
- * ^_______ Drop B->oa.samples_head reference
- *
- * We still can't free these due to the A->oa.samples_head ref:
- * [ 1 ][ 0 ][ 0 ][ 0 ]
- *
- * When the A query finishes: (note there's a new ref for C's samples_head)
- * ________________A_________________
- * | |
- * | _____C_________
- * | | |
- * [ 0 ][ 0 ][ 0 ][ 0 ][ 1 ][ 0 ][ 0 ]
- * ^_______ Drop A->oa.samples_head reference
- *
- * And we can now reap these nodes up to the C->oa.samples_head:
- * [ X ][ X ][ X ][ X ]
- * keeping -> [ 1 ][ 0 ][ 0 ]
- *
- * We reap old sample buffers each time we finish processing an OA
- * query by iterating the sample_buffers list from the head until we
- * find a referenced node and stop.
- *
- * Reaped buffers move to a perfquery.free_sample_buffers list and
- * when we come to read() we first look to recycle a buffer from the
- * free_sample_buffers list before allocating a new buffer.
- */
-struct oa_sample_buf {
- struct exec_node link;
- int refcount;
- int len;
- uint8_t buf[I915_PERF_OA_SAMPLE_SIZE * 10];
- uint32_t last_timestamp;
-};
-
-/**
- * gen representation of a performance query object.
- *
- * NB: We want to keep this structure relatively lean considering that
- * applications may expect to allocate enough objects to be able to
- * query around all draw calls in a frame.
- */
-struct gen_perf_query_object
-{
- const struct gen_perf_query_info *queryinfo;
-
- /* See query->kind to know which state below is in use... */
- union {
- struct {
-
- /**
- * BO containing OA counter snapshots at query Begin/End time.
- */
- void *bo;
-
- /**
- * Address of mapped of @bo
- */
- void *map;
-
- /**
- * The MI_REPORT_PERF_COUNT command lets us specify a unique
- * ID that will be reflected in the resulting OA report
- * that's written by the GPU. This is the ID we're expecting
- * in the begin report and the the end report should be
- * @begin_report_id + 1.
- */
- int begin_report_id;
-
- /**
- * Reference the head of the brw->perfquery.sample_buffers
- * list at the time that the query started (so we only need
- * to look at nodes after this point when looking for samples
- * related to this query)
- *
- * (See struct brw_oa_sample_buf description for more details)
- */
- struct exec_node *samples_head;
-
- /**
- * false while in the unaccumulated_elements list, and set to
- * true when the final, end MI_RPC snapshot has been
- * accumulated.
- */
- bool results_accumulated;
-
- /**
- * Frequency of the GT at begin and end of the query.
- */
- uint64_t gt_frequency[2];
-
- /**
- * Accumulated OA results between begin and end of the query.
- */
- struct gen_perf_query_result result;
- } oa;
-
- struct {
- /**
- * BO containing starting and ending snapshots for the
- * statistics counters.
- */
- void *bo;
- } pipeline_stats;
- };
-};
-
-struct gen_perf_context {
- struct gen_perf_config *perf;
-
- void * ctx; /* driver context (eg, brw_context) */
- void * bufmgr;
- const struct gen_device_info *devinfo;
-
- uint32_t hw_ctx;
- int drm_fd;
-
- /* The i915 perf stream we open to setup + enable the OA counters */
- int oa_stream_fd;
-
- /* An i915 perf stream fd gives exclusive access to the OA unit that will
- * report counter snapshots for a specific counter set/profile in a
- * specific layout/format so we can only start OA queries that are
- * compatible with the currently open fd...
- */
- int current_oa_metrics_set_id;
- int current_oa_format;
-
- /* List of buffers containing OA reports */
- struct exec_list sample_buffers;
-
- /* Cached list of empty sample buffers */
- struct exec_list free_sample_buffers;
-
- int n_active_oa_queries;
- int n_active_pipeline_stats_queries;
-
- /* The number of queries depending on running OA counters which
- * extends beyond brw_end_perf_query() since we need to wait until
- * the last MI_RPC command has parsed by the GPU.
- *
- * Accurate accounting is important here as emitting an
- * MI_REPORT_PERF_COUNT command while the OA unit is disabled will
- * effectively hang the gpu.
- */
- int n_oa_users;
-
- /* To help catch an spurious problem with the hardware or perf
- * forwarding samples, we emit each MI_REPORT_PERF_COUNT command
- * with a unique ID that we can explicitly check for...
- */
- int next_query_start_report_id;
-
- /**
- * An array of queries whose results haven't yet been assembled
- * based on the data in buffer objects.
- *
- * These may be active, or have already ended. However, the
- * results have not been requested.
- */
- struct gen_perf_query_object **unaccumulated;
- int unaccumulated_elements;
- int unaccumulated_array_size;
-
- /* The total number of query objects so we can relinquish
- * our exclusive access to perf if the application deletes
- * all of its objects. (NB: We only disable perf while
- * there are no active queries)
- */
- int n_query_instances;
-};
-
-const struct gen_perf_query_info*
-gen_perf_query_info(const struct gen_perf_query_object *query)
-{
- return query->queryinfo;
-}
-
-struct gen_perf_context *
-gen_perf_new_context(void *parent)
-{
- struct gen_perf_context *ctx = rzalloc(parent, struct gen_perf_context);
- if (! ctx)
- fprintf(stderr, "%s: failed to alloc context\n", __func__);
- return ctx;
-}
-
-struct gen_perf_config *
-gen_perf_config(struct gen_perf_context *ctx)
-{
- return ctx->perf;
-}
-
-struct gen_perf_query_object *
-gen_perf_new_query(struct gen_perf_context *perf_ctx, unsigned query_index)
-{
- const struct gen_perf_query_info *query =
- &perf_ctx->perf->queries[query_index];
- struct gen_perf_query_object *obj =
- calloc(1, sizeof(struct gen_perf_query_object));
-
- if (!obj)
- return NULL;
- obj->queryinfo = query;
+#define OA_REPORT_INVALID_CTX_ID (0xffffffff)
- perf_ctx->n_query_instances++;
- return obj;
-}
-
-int
-gen_perf_active_queries(struct gen_perf_context *perf_ctx,
- const struct gen_perf_query_info *query)
+static bool
+is_dir_or_link(const struct dirent *entry, const char *parent_dir)
{
- assert(perf_ctx->n_active_oa_queries == 0 || perf_ctx->n_active_pipeline_stats_queries == 0);
-
- switch (query->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- return perf_ctx->n_active_oa_queries;
- break;
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- return perf_ctx->n_active_pipeline_stats_queries;
- break;
-
- default:
- unreachable("Unknown query type");
- break;
- }
+#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
perf->sysfs_dev_dir[0] = '\0';
+ if (unlikely(INTEL_DEBUG & DEBUG_NO_OACONFIG))
+ return true;
+
if (fstat(fd, &sb)) {
DBG("Failed to stat DRM fd\n");
return false;
}
while ((drm_entry = readdir(drmdir))) {
- if ((drm_entry->d_type == DT_DIR ||
- drm_entry->d_type == DT_LNK) &&
+ 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,
return read_file_uint64(buf, value);
}
-static inline struct gen_perf_query_info *
-append_query_info(struct gen_perf_config *perf, int max_counters)
-{
- struct gen_perf_query_info *query;
-
- perf->queries = reralloc(perf, perf->queries,
- struct gen_perf_query_info,
- ++perf->n_queries);
- query = &perf->queries[perf->n_queries - 1];
- memset(query, 0, sizeof(*query));
-
- if (max_counters > 0) {
- query->max_counters = max_counters;
- query->counters =
- rzalloc_array(perf, struct gen_perf_query_counter, max_counters);
- }
-
- return query;
-}
-
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 *registred_query = append_query_info(perf, 0);
-
- *registred_query = *query;
- registred_query->oa_metrics_set_id = config_id;
- DBG("metric set registred: id = %" PRIu64", guid = %s\n",
- registred_query->oa_metrics_set_id, query->guid);
+ 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)
+enumerate_sysfs_metrics(struct gen_perf_config *perf,
+ const struct gen_device_info *devinfo)
{
DIR *metricsdir = NULL;
struct dirent *metric_entry;
while ((metric_entry = readdir(metricsdir))) {
struct hash_entry *entry;
-
- if ((metric_entry->d_type != DT_DIR &&
- metric_entry->d_type != DT_LNK) ||
+ if (!is_dir_or_link(metric_entry, buf) ||
metric_entry->d_name[0] == '.')
continue;
metric_entry->d_name);
if (entry) {
uint64_t id;
-
- len = snprintf(buf, sizeof(buf), "%s/metrics/%s/id",
- perf->sysfs_dev_dir, metric_entry->d_name);
- if (len < 0 || len >= sizeof(buf)) {
- DBG("Failed to concatenate path to sysfs metric id file\n");
- continue;
- }
-
- if (!read_file_uint64(buf, &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);
+ 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)
{
&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
-load_metric_id(struct gen_perf_config *perf, const char *guid,
- uint64_t *metric_id)
+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->sysfs_dev_dir, guid);
+ 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)
+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;
- struct drm_i915_perf_oa_config config;
uint64_t config_id;
- int ret;
- if (load_metric_id(perf, query->guid, &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);
+ register_oa_config(perf, devinfo, query, config_id);
continue;
}
- memset(&config, 0, sizeof(config));
-
- memcpy(config.uuid, query->guid, sizeof(config.uuid));
-
- config.n_mux_regs = query->n_mux_regs;
- config.mux_regs_ptr = (uintptr_t) query->mux_regs;
-
- config.n_boolean_regs = query->n_b_counter_regs;
- config.boolean_regs_ptr = (uintptr_t) query->b_counter_regs;
-
- config.n_flex_regs = query->n_flex_regs;
- config.flex_regs_ptr = (uintptr_t) query->flex_regs;
-
- ret = gen_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &config);
+ 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);
+ register_oa_config(perf, devinfo, query, ret);
DBG("metric set: %s (added)\n", query->guid);
}
}
{
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 (likely(!(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;
+ 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;
}
if (devinfo->is_cannonlake)
return gen_oa_register_queries_cnl;
- if (devinfo->gen == 11)
+ 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 inline void
-add_stat_reg(struct gen_perf_query_info *query, uint32_t reg,
- uint32_t numerator, uint32_t denominator,
- const char *name, const char *description)
+static int
+gen_perf_compare_counter_names(const void *v1, const void *v2)
{
- struct gen_perf_query_counter *counter;
-
- assert(query->n_counters < query->max_counters);
+ const struct gen_perf_query_counter *c1 = v1;
+ const struct gen_perf_query_counter *c2 = v2;
- counter = &query->counters[query->n_counters];
- counter->name = name;
- counter->desc = description;
- counter->type = GEN_PERF_COUNTER_TYPE_RAW;
- counter->data_type = GEN_PERF_COUNTER_DATA_TYPE_UINT64;
- counter->offset = sizeof(uint64_t) * query->n_counters;
- counter->pipeline_stat.reg = reg;
- counter->pipeline_stat.numerator = numerator;
- counter->pipeline_stat.denominator = denominator;
-
- query->n_counters++;
+ return strcmp(c1->name, c2->name);
}
-static inline void
-add_basic_stat_reg(struct gen_perf_query_info *query,
- uint32_t reg, const char *name)
+static void
+sort_query(struct gen_perf_query_info *q)
{
- add_stat_reg(query, reg, 1, 1, name, name);
+ 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)
+ const struct gen_device_info *devinfo)
{
struct gen_perf_query_info *query =
- append_query_info(perf_cfg, MAX_STAT_COUNTERS);
+ gen_perf_append_query_info(perf_cfg, MAX_STAT_COUNTERS);
query->kind = GEN_PERF_QUERY_TYPE_PIPELINE;
query->name = "Pipeline Statistics Registers";
- add_basic_stat_reg(query, IA_VERTICES_COUNT,
- "N vertices submitted");
- add_basic_stat_reg(query, IA_PRIMITIVES_COUNT,
- "N primitives submitted");
- add_basic_stat_reg(query, VS_INVOCATION_COUNT,
- "N vertex shader invocations");
+ 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) {
- add_stat_reg(query, GEN6_SO_PRIM_STORAGE_NEEDED, 1, 1,
- "SO_PRIM_STORAGE_NEEDED",
- "N geometry shader stream-out primitives (total)");
- add_stat_reg(query, GEN6_SO_NUM_PRIMS_WRITTEN, 1, 1,
- "SO_NUM_PRIMS_WRITTEN",
- "N geometry shader stream-out primitives (written)");
+ 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 {
- 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)");
- 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)");
- 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)");
- 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)");
- 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)");
- 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)");
- 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)");
- 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_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)");
}
- add_basic_stat_reg(query, HS_INVOCATION_COUNT,
- "N TCS shader invocations");
- add_basic_stat_reg(query, DS_INVOCATION_COUNT,
- "N TES shader invocations");
+ 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");
- add_basic_stat_reg(query, GS_INVOCATION_COUNT,
- "N geometry shader invocations");
- add_basic_stat_reg(query, GS_PRIMITIVES_COUNT,
- "N geometry shader primitives emitted");
+ 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");
- add_basic_stat_reg(query, CL_INVOCATION_COUNT,
- "N primitives entering clipping");
- add_basic_stat_reg(query, CL_PRIMITIVES_COUNT,
- "N primitives leaving clipping");
+ 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) {
- add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4,
- "N fragment shader invocations",
- "N fragment shader invocations");
+ gen_perf_query_add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4,
+ "N fragment shader invocations",
+ "N fragment shader invocations");
} else {
- add_basic_stat_reg(query, PS_INVOCATION_COUNT,
- "N fragment shader invocations");
+ gen_perf_query_add_basic_stat_reg(query, PS_INVOCATION_COUNT,
+ "N fragment shader invocations");
}
- add_basic_stat_reg(query, PS_DEPTH_COUNT,
- "N z-pass fragments");
+ gen_perf_query_add_basic_stat_reg(query, PS_DEPTH_COUNT,
+ "N z-pass fragments");
if (devinfo->gen >= 7) {
- add_basic_stat_reg(query, CS_INVOCATION_COUNT,
- "N compute shader invocations");
+ 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
-load_oa_metrics(struct gen_perf_config *perf, int fd,
- const struct gen_device_info *devinfo)
+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 (paranoid == 0 || geteuid() == 0)
i915_perf_oa_available = true;
}
+
+ perf->platform_supported = oa_register != NULL;
}
- if (!i915_perf_oa_available ||
- !oa_register ||
- !get_sysfs_dev_dir(perf, fd) ||
- !init_oa_sys_vars(perf, devinfo))
- return false;
+ 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_key_hash_string,
+ _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
*/
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);
+ if (likely(!(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);
+ }
- return true;
-}
+ /* 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]);
-/* 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);
+ /* 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->fallback_raw_oa_metric = perf->queries[perf->n_queries - 1].oa_metrics_set_id;
}
-/* Accumulate 40bits OA counters */
-static inline void
-accumulate_uint40(int a_index,
- const uint32_t *report0,
- const uint32_t *report1,
- uint64_t *accumulator)
+struct gen_perf_registers *
+gen_perf_load_configuration(struct gen_perf_config *perf_cfg, int fd, const char *guid)
{
- 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 (!perf_cfg->i915_query_supported)
+ return NULL;
- if (value0 > value1)
- delta = (1ULL << 40) + value1 - value0;
- else
- delta = value1 - value0;
+ struct drm_i915_perf_oa_config i915_config = { 0, };
+ if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config))
+ return NULL;
- *accumulator += delta;
+ 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;
}
-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;
-}
-
-static void
-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]);
-}
-
-static void
-query_result_accumulate(struct gen_perf_query_result *result,
- const struct gen_perf_query_info *query,
- const uint32_t *start,
- const uint32_t *end)
+uint64_t
+gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd,
+ const struct gen_perf_registers *config,
+ const char *guid)
{
- int i, idx = 0;
-
- result->hw_id = start[2];
- result->reports_accumulated++;
+ if (guid)
+ return i915_add_config(perf_cfg, fd, config, guid);
- 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;
+ struct mesa_sha1 sha1_ctx;
+ _mesa_sha1_init(&sha1_ctx);
- 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");
+ if (config->flex_regs) {
+ _mesa_sha1_update(&sha1_ctx, config->flex_regs,
+ sizeof(config->flex_regs[0]) *
+ config->n_flex_regs);
}
-
-}
-
-static void
-query_result_clear(struct gen_perf_query_result *result)
-{
- memset(result, 0, sizeof(*result));
- result->hw_id = 0xffffffff; /* invalid */
-}
-
-static void
-register_mdapi_statistic_query(struct gen_perf_config *perf_cfg,
- const struct gen_device_info *devinfo)
-{
- if (!(devinfo->gen >= 7 && devinfo->gen <= 11))
- return;
-
- struct gen_perf_query_info *query =
- append_query_info(perf_cfg, MAX_STAT_COUNTERS);
-
- query->kind = GEN_PERF_QUERY_TYPE_PIPELINE;
- query->name = "Intel_Raw_Pipeline_Statistics_Query";
-
- /* The order has to match mdapi_pipeline_metrics. */
- add_basic_stat_reg(query, IA_VERTICES_COUNT,
- "N vertices submitted");
- add_basic_stat_reg(query, IA_PRIMITIVES_COUNT,
- "N primitives submitted");
- add_basic_stat_reg(query, VS_INVOCATION_COUNT,
- "N vertex shader invocations");
- add_basic_stat_reg(query, GS_INVOCATION_COUNT,
- "N geometry shader invocations");
- add_basic_stat_reg(query, GS_PRIMITIVES_COUNT,
- "N geometry shader primitives emitted");
- add_basic_stat_reg(query, CL_INVOCATION_COUNT,
- "N primitives entering clipping");
- add_basic_stat_reg(query, CL_PRIMITIVES_COUNT,
- "N primitives leaving clipping");
- if (devinfo->is_haswell || devinfo->gen == 8) {
- add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4,
- "N fragment shader invocations",
- "N fragment shader invocations");
- } else {
- add_basic_stat_reg(query, PS_INVOCATION_COUNT,
- "N fragment shader invocations");
+ if (config->mux_regs) {
+ _mesa_sha1_update(&sha1_ctx, config->mux_regs,
+ sizeof(config->mux_regs[0]) *
+ config->n_mux_regs);
}
- add_basic_stat_reg(query, HS_INVOCATION_COUNT,
- "N TCS shader invocations");
- add_basic_stat_reg(query, DS_INVOCATION_COUNT,
- "N TES shader invocations");
- if (devinfo->gen >= 7) {
- add_basic_stat_reg(query, CS_INVOCATION_COUNT,
- "N compute shader invocations");
+ 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);
}
- if (devinfo->gen >= 10) {
- /* Reuse existing CS invocation register until we can expose this new
- * one.
- */
- add_basic_stat_reg(query, CS_INVOCATION_COUNT,
- "Reserved1");
- }
+ uint8_t hash[20];
+ _mesa_sha1_final(&sha1_ctx, hash);
- query->data_size = sizeof(uint64_t) * query->n_counters;
-}
+ char formatted_hash[41];
+ _mesa_sha1_format(formatted_hash, hash);
-static void
-fill_mdapi_perf_query_counter(struct gen_perf_query_info *query,
- const char *name,
- uint32_t data_offset,
- uint32_t data_size,
- enum gen_perf_counter_data_type data_type)
-{
- struct gen_perf_query_counter *counter = &query->counters[query->n_counters];
-
- assert(query->n_counters <= query->max_counters);
+ 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]);
- counter->name = name;
- counter->desc = "Raw counter value";
- counter->type = GEN_PERF_COUNTER_TYPE_RAW;
- counter->data_type = data_type;
- counter->offset = data_offset;
+ /* Check if already present. */
+ uint64_t id;
+ if (gen_perf_load_metric_id(perf_cfg, generated_guid, &id))
+ return id;
- query->n_counters++;
-
- assert(counter->offset + gen_perf_query_counter_get_size(counter) <= query->data_size);
-}
-
-#define MDAPI_QUERY_ADD_COUNTER(query, struct_name, field_name, type_name) \
- fill_mdapi_perf_query_counter(query, #field_name, \
- (uint8_t *) &struct_name.field_name - \
- (uint8_t *) &struct_name, \
- sizeof(struct_name.field_name), \
- GEN_PERF_COUNTER_DATA_TYPE_##type_name)
-#define MDAPI_QUERY_ADD_ARRAY_COUNTER(ctx, query, struct_name, field_name, idx, type_name) \
- fill_mdapi_perf_query_counter(query, \
- ralloc_asprintf(ctx, "%s%i", #field_name, idx), \
- (uint8_t *) &struct_name.field_name[idx] - \
- (uint8_t *) &struct_name, \
- sizeof(struct_name.field_name[0]), \
- GEN_PERF_COUNTER_DATA_TYPE_##type_name)
-
-static void
-register_mdapi_oa_query(const struct gen_device_info *devinfo,
- struct gen_perf_config *perf)
-{
- struct gen_perf_query_info *query = NULL;
-
- /* MDAPI requires different structures for pretty much every generation
- * (right now we have definitions for gen 7 to 11).
- */
- if (!(devinfo->gen >= 7 && devinfo->gen <= 11))
- return;
-
- switch (devinfo->gen) {
- case 7: {
- query = append_query_info(perf, 1 + 45 + 16 + 7);
- query->oa_format = I915_OA_FORMAT_A45_B8_C8;
-
- struct gen7_mdapi_metrics metric_data;
- query->data_size = sizeof(metric_data);
-
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64);
- for (int i = 0; i < ARRAY_SIZE(metric_data.ACounters); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, ACounters, i, UINT64);
- }
- for (int i = 0; i < ARRAY_SIZE(metric_data.NOACounters); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, NOACounters, i, UINT64);
- }
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32);
- break;
- }
- case 8: {
- query = append_query_info(perf, 2 + 36 + 16 + 16);
- query->oa_format = I915_OA_FORMAT_A32u40_A4u32_B8_C8;
-
- struct gen8_mdapi_metrics metric_data;
- query->data_size = sizeof(metric_data);
-
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, GPUTicks, UINT64);
- for (int i = 0; i < ARRAY_SIZE(metric_data.OaCntr); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, OaCntr, i, UINT64);
- }
- for (int i = 0; i < ARRAY_SIZE(metric_data.NoaCntr); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, NoaCntr, i, UINT64);
- }
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, BeginTimestamp, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved1, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved2, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved3, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, OverrunOccured, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerUser, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerDriver, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, SliceFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, UnsliceFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32);
- break;
- }
- case 9:
- case 10:
- case 11: {
- query = append_query_info(perf, 2 + 36 + 16 + 16 + 16 + 2);
- query->oa_format = I915_OA_FORMAT_A32u40_A4u32_B8_C8;
-
- struct gen9_mdapi_metrics metric_data;
- query->data_size = sizeof(metric_data);
-
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, GPUTicks, UINT64);
- for (int i = 0; i < ARRAY_SIZE(metric_data.OaCntr); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, OaCntr, i, UINT64);
- }
- for (int i = 0; i < ARRAY_SIZE(metric_data.NoaCntr); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, NoaCntr, i, UINT64);
- }
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, BeginTimestamp, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved1, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved2, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved3, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, OverrunOccured, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerUser, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerDriver, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, SliceFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, UnsliceFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32);
- for (int i = 0; i < ARRAY_SIZE(metric_data.UserCntr); i++) {
- MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query,
- metric_data, UserCntr, i, UINT64);
- }
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, UserCntrCfgId, UINT32);
- MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved4, UINT32);
- break;
- }
- default:
- unreachable("Unsupported gen");
- break;
- }
-
- query->kind = GEN_PERF_QUERY_TYPE_RAW;
- query->name = "Intel_Raw_Hardware_Counters_Set_0_Query";
- query->guid = GEN_PERF_QUERY_GUID_MDAPI;
-
- {
- /* Accumulation buffer offsets copied from an actual query... */
- const struct gen_perf_query_info *copy_query =
- &perf->queries[0];
-
- query->gpu_time_offset = copy_query->gpu_time_offset;
- query->gpu_clock_offset = copy_query->gpu_clock_offset;
- query->a_offset = copy_query->a_offset;
- query->b_offset = copy_query->b_offset;
- query->c_offset = copy_query->c_offset;
- }
+ return i915_add_config(perf_cfg, fd, config, generated_guid);
}
static uint64_t
-get_metric_id(struct gen_perf_config *perf,
- const struct gen_perf_query_info *query)
+get_passes_mask(struct gen_perf_config *perf,
+ const uint32_t *counter_indices,
+ uint32_t counter_indices_count)
{
- /* These queries are know not to ever change, their config ID has been
- * loaded upon the first query creation. No need to look them up again.
- */
- if (query->kind == GEN_PERF_QUERY_TYPE_OA)
- return query->oa_metrics_set_id;
+ uint64_t queries_mask = 0;
- assert(query->kind == GEN_PERF_QUERY_TYPE_RAW);
+ assert(perf->n_queries < 64);
- /* Raw queries can be reprogrammed up by an external application/library.
- * When a raw query is used for the first time it's id is set to a value !=
- * 0. When it stops being used the id returns to 0. No need to reload the
- * ID when it's already loaded.
+ /* 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.
*/
- if (query->oa_metrics_set_id != 0) {
- DBG("Raw query '%s' guid=%s using cached ID: %"PRIu64"\n",
- query->name, query->guid, query->oa_metrics_set_id);
- return query->oa_metrics_set_id;
- }
+ 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);
- struct gen_perf_query_info *raw_query = (struct gen_perf_query_info *)query;
- if (!load_metric_id(perf, query->guid,
- &raw_query->oa_metrics_set_id)) {
- DBG("Unable to read query guid=%s ID, falling back to test config\n", query->guid);
- raw_query->oa_metrics_set_id = 1ULL;
- } else {
- DBG("Raw query '%s'guid=%s loaded ID: %"PRIu64"\n",
- query->name, query->guid, query->oa_metrics_set_id);
- }
- return query->oa_metrics_set_id;
-}
-
-static struct oa_sample_buf *
-get_free_sample_buf(struct gen_perf_context *perf_ctx)
-{
- struct exec_node *node = exec_list_pop_head(&perf_ctx->free_sample_buffers);
- struct oa_sample_buf *buf;
-
- if (node)
- buf = exec_node_data(struct oa_sample_buf, node, link);
- else {
- buf = ralloc_size(perf_ctx->perf, sizeof(*buf));
-
- exec_node_init(&buf->link);
- buf->refcount = 0;
- buf->len = 0;
- }
+ uint32_t idx = counter_indices[i];
+ if (__builtin_popcount(perf->counter_infos[idx].query_mask) != (q + 1))
+ continue;
- return buf;
-}
+ if (queries_mask & perf->counter_infos[idx].query_mask)
+ continue;
-static void
-reap_old_sample_buffers(struct gen_perf_context *perf_ctx)
-{
- struct exec_node *tail_node =
- exec_list_get_tail(&perf_ctx->sample_buffers);
- struct oa_sample_buf *tail_buf =
- exec_node_data(struct oa_sample_buf, tail_node, link);
-
- /* Remove all old, unreferenced sample buffers walking forward from
- * the head of the list, except always leave at least one node in
- * the list so we always have a node to reference when we Begin
- * a new query.
- */
- foreach_list_typed_safe(struct oa_sample_buf, buf, link,
- &perf_ctx->sample_buffers)
- {
- if (buf->refcount == 0 && buf != tail_buf) {
- exec_node_remove(&buf->link);
- exec_list_push_head(&perf_ctx->free_sample_buffers, &buf->link);
- } else
- return;
+ queries_mask |= BITFIELD64_BIT(ffsll(perf->counter_infos[idx].query_mask) - 1);
+ }
}
-}
-
-static void
-free_sample_bufs(struct gen_perf_context *perf_ctx)
-{
- foreach_list_typed_safe(struct oa_sample_buf, buf, link,
- &perf_ctx->free_sample_buffers)
- ralloc_free(buf);
- exec_list_make_empty(&perf_ctx->free_sample_buffers);
+ return queries_mask;
}
-/******************************************************************************/
-
-/**
- * Emit MI_STORE_REGISTER_MEM commands to capture all of the
- * pipeline statistics for the performance query object.
- */
-static void
-snapshot_statistics_registers(void *context,
- struct gen_perf_config *perf,
- struct gen_perf_query_object *obj,
- uint32_t offset_in_bytes)
+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)
{
- const struct gen_perf_query_info *query = obj->queryinfo;
- const int n_counters = query->n_counters;
+ uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count);
- for (int i = 0; i < n_counters; i++) {
- const struct gen_perf_query_counter *counter = &query->counters[i];
-
- assert(counter->data_type == GEN_PERF_COUNTER_DATA_TYPE_UINT64);
-
- perf->vtbl.store_register_mem64(context, obj->pipeline_stats.bo,
- counter->pipeline_stat.reg,
- offset_in_bytes + i * sizeof(uint64_t));
+ 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];
+ }
}
-}
-static void
-gen_perf_close(struct gen_perf_context *perfquery,
- const struct gen_perf_query_info *query)
-{
- if (perfquery->oa_stream_fd != -1) {
- close(perfquery->oa_stream_fd);
- perfquery->oa_stream_fd = -1;
- }
- if (query->kind == GEN_PERF_QUERY_TYPE_RAW) {
- struct gen_perf_query_info *raw_query =
- (struct gen_perf_query_info *) query;
- raw_query->oa_metrics_set_id = 0;
- }
+ return __builtin_popcount(queries_mask);
}
-static bool
-gen_perf_open(struct gen_perf_context *perf_ctx,
- int metrics_set_id,
- int report_format,
- int period_exponent,
- int drm_fd,
- uint32_t ctx_id)
+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 properties[] = {
- /* Single context sampling */
- DRM_I915_PERF_PROP_CTX_HANDLE, ctx_id,
+ uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count);
+ ASSERTED uint32_t n_passes = __builtin_popcount(queries_mask);
- /* Include OA reports in samples */
- DRM_I915_PERF_PROP_SAMPLE_OA, true,
-
- /* OA unit configuration */
- DRM_I915_PERF_PROP_OA_METRICS_SET, metrics_set_id,
- DRM_I915_PERF_PROP_OA_FORMAT, report_format,
- DRM_I915_PERF_PROP_OA_EXPONENT, period_exponent,
- };
- struct drm_i915_perf_open_param param = {
- .flags = I915_PERF_FLAG_FD_CLOEXEC |
- I915_PERF_FLAG_FD_NONBLOCK |
- I915_PERF_FLAG_DISABLED,
- .num_properties = ARRAY_SIZE(properties) / 2,
- .properties_ptr = (uintptr_t) properties,
- };
- int fd = gen_ioctl(drm_fd, DRM_IOCTL_I915_PERF_OPEN, ¶m);
- if (fd == -1) {
- DBG("Error opening gen perf OA stream: %m\n");
- return false;
- }
+ for (uint32_t i = 0; i < counter_indices_count; i++) {
+ assert(counter_indices[i] < perf->n_counters);
- perf_ctx->oa_stream_fd = fd;
+ uint32_t idx = counter_indices[i];
+ counter_pass[i].counter = perf->counter_infos[idx].counter;
- perf_ctx->current_oa_metrics_set_id = metrics_set_id;
- perf_ctx->current_oa_format = report_format;
+ uint32_t query_idx = ffsll(perf->counter_infos[idx].query_mask & queries_mask) - 1;
+ counter_pass[i].query = &perf->queries[query_idx];
- return true;
-}
-
-static bool
-inc_n_users(struct gen_perf_context *perf_ctx)
-{
- if (perf_ctx->n_oa_users == 0 &&
- gen_ioctl(perf_ctx->oa_stream_fd, I915_PERF_IOCTL_ENABLE, 0) < 0)
- {
- return false;
+ 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);
}
- ++perf_ctx->n_oa_users;
-
- return true;
}
-static void
-dec_n_users(struct gen_perf_context *perf_ctx)
+/* Accumulate 32bits OA counters */
+static inline void
+accumulate_uint32(const uint32_t *report0,
+ const uint32_t *report1,
+ uint64_t *accumulator)
{
- /* Disabling the i915 perf stream will effectively disable the OA
- * counters. Note it's important to be sure there are no outstanding
- * MI_RPC commands at this point since they could stall the CS
- * indefinitely once OACONTROL is disabled.
- */
- --perf_ctx->n_oa_users;
- if (perf_ctx->n_oa_users == 0 &&
- gen_ioctl(perf_ctx->oa_stream_fd, I915_PERF_IOCTL_DISABLE, 0) < 0)
- {
- DBG("WARNING: Error disabling gen perf stream: %m\n");
- }
+ *accumulator += (uint32_t)(*report1 - *report0);
}
-void
-gen_perf_init_metrics(struct gen_perf_config *perf_cfg,
- const struct gen_device_info *devinfo,
- int drm_fd)
+/* Accumulate 40bits OA counters */
+static inline void
+accumulate_uint40(int a_index,
+ const uint32_t *report0,
+ const uint32_t *report1,
+ uint64_t *accumulator)
{
- load_pipeline_statistic_metrics(perf_cfg, devinfo);
- register_mdapi_statistic_query(perf_cfg, devinfo);
- if (load_oa_metrics(perf_cfg, drm_fd, devinfo))
- register_mdapi_oa_query(devinfo, perf_cfg);
-}
+ 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;
-void
-gen_perf_init_context(struct gen_perf_context *perf_ctx,
- struct gen_perf_config *perf_cfg,
- void * ctx, /* driver context (eg, brw_context) */
- void * bufmgr, /* eg brw_bufmgr */
- const struct gen_device_info *devinfo,
- uint32_t hw_ctx,
- int drm_fd)
-{
- perf_ctx->perf = perf_cfg;
- perf_ctx->ctx = ctx;
- perf_ctx->bufmgr = bufmgr;
- perf_ctx->drm_fd = drm_fd;
- perf_ctx->hw_ctx = hw_ctx;
- perf_ctx->devinfo = devinfo;
-
- perf_ctx->unaccumulated =
- ralloc_array(ctx, struct gen_perf_query_object *, 2);
- perf_ctx->unaccumulated_elements = 0;
- perf_ctx->unaccumulated_array_size = 2;
-
- exec_list_make_empty(&perf_ctx->sample_buffers);
- exec_list_make_empty(&perf_ctx->free_sample_buffers);
-
- /* It's convenient to guarantee that this linked list of sample
- * buffers is never empty so we add an empty head so when we
- * Begin an OA query we can always take a reference on a buffer
- * in this list.
- */
- struct oa_sample_buf *buf = get_free_sample_buf(perf_ctx);
- exec_list_push_head(&perf_ctx->sample_buffers, &buf->link);
+ if (value0 > value1)
+ delta = (1ULL << 40) + value1 - value0;
+ else
+ delta = value1 - value0;
- perf_ctx->oa_stream_fd = -1;
- perf_ctx->next_query_start_report_id = 1000;
+ *accumulator += delta;
}
-/**
- * Add a query to the global list of "unaccumulated queries."
- *
- * Queries are tracked here until all the associated OA reports have
- * been accumulated via accumulate_oa_reports() after the end
- * MI_REPORT_PERF_COUNT has landed in query->oa.bo.
- */
static void
-add_to_unaccumulated_query_list(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *obj)
-{
- if (perf_ctx->unaccumulated_elements >=
- perf_ctx->unaccumulated_array_size)
- {
- perf_ctx->unaccumulated_array_size *= 1.5;
- perf_ctx->unaccumulated =
- reralloc(perf_ctx->ctx, perf_ctx->unaccumulated,
- struct gen_perf_query_object *,
- perf_ctx->unaccumulated_array_size);
- }
-
- perf_ctx->unaccumulated[perf_ctx->unaccumulated_elements++] = obj;
-}
-
-bool
-gen_perf_begin_query(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query)
+gen8_read_report_clock_ratios(const uint32_t *report,
+ uint64_t *slice_freq_hz,
+ uint64_t *unslice_freq_hz)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
- const struct gen_perf_query_info *queryinfo = query->queryinfo;
-
- /* XXX: We have to consider that the command parser unit that parses batch
- * buffer commands and is used to capture begin/end counter snapshots isn't
- * implicitly synchronized with what's currently running across other GPU
- * units (such as the EUs running shaders) that the performance counters are
- * associated with.
- *
- * The intention of performance queries is to measure the work associated
- * with commands between the begin/end delimiters and so for that to be the
- * case we need to explicitly synchronize the parsing of commands to capture
- * Begin/End counter snapshots with what's running across other parts of the
- * GPU.
- *
- * When the command parser reaches a Begin marker it effectively needs to
- * drain everything currently running on the GPU until the hardware is idle
- * before capturing the first snapshot of counters - otherwise the results
- * would also be measuring the effects of earlier commands.
- *
- * When the command parser reaches an End marker it needs to stall until
- * everything currently running on the GPU has finished before capturing the
- * end snapshot - otherwise the results won't be a complete representation
- * of the work.
- *
- * Theoretically there could be opportunities to minimize how much of the
- * GPU pipeline is drained, or that we stall for, when we know what specific
- * units the performance counters being queried relate to but we don't
- * currently attempt to be clever here.
- *
- * Note: with our current simple approach here then for back-to-back queries
- * we will redundantly emit duplicate commands to synchronize the command
- * streamer with the rest of the GPU pipeline, but we assume that in HW the
- * second synchronization is effectively a NOOP.
+ /* 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 :
*
- * N.B. The final results are based on deltas of counters between (inside)
- * Begin/End markers so even though the total wall clock time of the
- * workload is stretched by larger pipeline bubbles the bubbles themselves
- * are generally invisible to the query results. Whether that's a good or a
- * bad thing depends on the use case. For a lower real-time impact while
- * capturing metrics then periodic sampling may be a better choice than
- * INTEL_performance_query.
+ * 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)
*
- * This is our Begin synchronization point to drain current work on the
- * GPU before we capture our first counter snapshot...
+ * RP_FREQ_NORMAL[22:14]: Software Slice Ratio Request
+ * Multiple of 33.33MHz 2xclk (16 MHz 1xclk)
*/
- perf_cfg->vtbl.emit_mi_flush(perf_ctx->ctx);
-
- switch (queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW: {
-
- /* Opening an i915 perf stream implies exclusive access to the OA unit
- * which will generate counter reports for a specific counter set with a
- * specific layout/format so we can't begin any OA based queries that
- * require a different counter set or format unless we get an opportunity
- * to close the stream and open a new one...
- */
- uint64_t metric_id = get_metric_id(perf_ctx->perf, queryinfo);
-
- if (perf_ctx->oa_stream_fd != -1 &&
- perf_ctx->current_oa_metrics_set_id != metric_id) {
- if (perf_ctx->n_oa_users != 0) {
- DBG("WARNING: Begin failed already using perf config=%i/%"PRIu64"\n",
- perf_ctx->current_oa_metrics_set_id, metric_id);
- return false;
- } else
- gen_perf_close(perf_ctx, queryinfo);
- }
-
- /* If the OA counters aren't already on, enable them. */
- if (perf_ctx->oa_stream_fd == -1) {
- const struct gen_device_info *devinfo = perf_ctx->devinfo;
-
- /* The period_exponent gives a sampling period as follows:
- * sample_period = timestamp_period * 2^(period_exponent + 1)
- *
- * The timestamps increments every 80ns (HSW), ~52ns (GEN9LP) or
- * ~83ns (GEN8/9).
- *
- * The counter overflow period is derived from the EuActive counter
- * which reads a counter that increments by the number of clock
- * cycles multiplied by the number of EUs. It can be calculated as:
- *
- * 2^(number of bits in A counter) / (n_eus * max_gen_freq * 2)
- *
- * (E.g. 40 EUs @ 1GHz = ~53ms)
- *
- * We select a sampling period inferior to that overflow period to
- * ensure we cannot see more than 1 counter overflow, otherwise we
- * could loose information.
- */
-
- int a_counter_in_bits = 32;
- if (devinfo->gen >= 8)
- a_counter_in_bits = 40;
-
- uint64_t overflow_period = pow(2, a_counter_in_bits) / (perf_cfg->sys_vars.n_eus *
- /* drop 1GHz freq to have units in nanoseconds */
- 2);
-
- DBG("A counter overflow period: %"PRIu64"ns, %"PRIu64"ms (n_eus=%"PRIu64")\n",
- overflow_period, overflow_period / 1000000ul, perf_cfg->sys_vars.n_eus);
-
- int period_exponent = 0;
- uint64_t prev_sample_period, next_sample_period;
- for (int e = 0; e < 30; e++) {
- prev_sample_period = 1000000000ull * pow(2, e + 1) / devinfo->timestamp_frequency;
- next_sample_period = 1000000000ull * pow(2, e + 2) / devinfo->timestamp_frequency;
-
- /* Take the previous sampling period, lower than the overflow
- * period.
- */
- if (prev_sample_period < overflow_period &&
- next_sample_period > overflow_period)
- period_exponent = e + 1;
- }
-
- if (period_exponent == 0) {
- DBG("WARNING: enable to find a sampling exponent\n");
- return false;
- }
-
- DBG("OA sampling exponent: %i ~= %"PRIu64"ms\n", period_exponent,
- prev_sample_period / 1000000ul);
-
- if (!gen_perf_open(perf_ctx, metric_id, queryinfo->oa_format,
- period_exponent, perf_ctx->drm_fd,
- perf_ctx->hw_ctx))
- return false;
- } else {
- assert(perf_ctx->current_oa_metrics_set_id == metric_id &&
- perf_ctx->current_oa_format == queryinfo->oa_format);
- }
-
- if (!inc_n_users(perf_ctx)) {
- DBG("WARNING: Error enabling i915 perf stream: %m\n");
- return false;
- }
-
- if (query->oa.bo) {
- perf_cfg->vtbl.bo_unreference(query->oa.bo);
- query->oa.bo = NULL;
- }
-
- query->oa.bo = perf_cfg->vtbl.bo_alloc(perf_ctx->bufmgr,
- "perf. query OA MI_RPC bo",
- MI_RPC_BO_SIZE);
-#ifdef DEBUG
- /* Pre-filling the BO helps debug whether writes landed. */
- void *map = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->oa.bo, MAP_WRITE);
- memset(map, 0x80, MI_RPC_BO_SIZE);
- perf_cfg->vtbl.bo_unmap(query->oa.bo);
-#endif
-
- query->oa.begin_report_id = perf_ctx->next_query_start_report_id;
- perf_ctx->next_query_start_report_id += 2;
-
- /* We flush the batchbuffer here to minimize the chances that MI_RPC
- * delimiting commands end up in different batchbuffers. If that's the
- * case, the measurement will include the time it takes for the kernel
- * scheduler to load a new request into the hardware. This is manifested in
- * tools like frameretrace by spikes in the "GPU Core Clocks" counter.
- */
- perf_cfg->vtbl.batchbuffer_flush(perf_ctx->ctx, __FILE__, __LINE__);
-
- /* Take a starting OA counter snapshot. */
- perf_cfg->vtbl.emit_mi_report_perf_count(perf_ctx->ctx, query->oa.bo, 0,
- query->oa.begin_report_id);
- perf_cfg->vtbl.capture_frequency_stat_register(perf_ctx->ctx, query->oa.bo,
- MI_FREQ_START_OFFSET_BYTES);
-
- ++perf_ctx->n_active_oa_queries;
-
- /* No already-buffered samples can possibly be associated with this query
- * so create a marker within the list of sample buffers enabling us to
- * easily ignore earlier samples when processing this query after
- * completion.
- */
- assert(!exec_list_is_empty(&perf_ctx->sample_buffers));
- query->oa.samples_head = exec_list_get_tail(&perf_ctx->sample_buffers);
-
- struct oa_sample_buf *buf =
- exec_node_data(struct oa_sample_buf, query->oa.samples_head, link);
-
- /* This reference will ensure that future/following sample
- * buffers (that may relate to this query) can't be freed until
- * this drops to zero.
- */
- buf->refcount++;
-
- query_result_clear(&query->oa.result);
- query->oa.results_accumulated = false;
-
- add_to_unaccumulated_query_list(perf_ctx, query);
- break;
- }
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- if (query->pipeline_stats.bo) {
- perf_cfg->vtbl.bo_unreference(query->pipeline_stats.bo);
- query->pipeline_stats.bo = NULL;
- }
-
- query->pipeline_stats.bo =
- perf_cfg->vtbl.bo_alloc(perf_ctx->bufmgr,
- "perf. query pipeline stats bo",
- STATS_BO_SIZE);
-
- /* Take starting snapshots. */
- snapshot_statistics_registers(perf_ctx->ctx , perf_cfg, query, 0);
-
- ++perf_ctx->n_active_pipeline_stats_queries;
- break;
-
- default:
- unreachable("Unknown query type");
- break;
- }
+ 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);
- return true;
+ *slice_freq_hz = slice_freq * 16666667ULL;
+ *unslice_freq_hz = unslice_freq * 16666667ULL;
}
void
-gen_perf_end_query(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query)
+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)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
-
- /* Ensure that the work associated with the queried commands will have
- * finished before taking our query end counter readings.
+ /* 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)
*
- * For more details see comment in brw_begin_perf_query for
- * corresponding flush.
+ * Documentation says this should be available on Gen9+ but experimentation
+ * shows that Gen8 reports similar values, so we enable it there too.
*/
- perf_cfg->vtbl.emit_mi_flush(perf_ctx->ctx);
-
- switch (query->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
-
- /* NB: It's possible that the query will have already been marked
- * as 'accumulated' if an error was seen while reading samples
- * from perf. In this case we mustn't try and emit a closing
- * MI_RPC command in case the OA unit has already been disabled
- */
- if (!query->oa.results_accumulated) {
- /* Take an ending OA counter snapshot. */
- perf_cfg->vtbl.capture_frequency_stat_register(perf_ctx->ctx, query->oa.bo,
- MI_FREQ_END_OFFSET_BYTES);
- perf_cfg->vtbl.emit_mi_report_perf_count(perf_ctx->ctx, query->oa.bo,
- MI_RPC_BO_END_OFFSET_BYTES,
- query->oa.begin_report_id + 1);
- }
-
- --perf_ctx->n_active_oa_queries;
-
- /* NB: even though the query has now ended, it can't be accumulated
- * until the end MI_REPORT_PERF_COUNT snapshot has been written
- * to query->oa.bo
- */
- break;
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- snapshot_statistics_registers(perf_ctx->ctx, perf_cfg, query,
- STATS_BO_END_OFFSET_BYTES);
- --perf_ctx->n_active_pipeline_stats_queries;
- break;
-
- default:
- unreachable("Unknown query type");
- break;
- }
-}
-
-enum OaReadStatus {
- OA_READ_STATUS_ERROR,
- OA_READ_STATUS_UNFINISHED,
- OA_READ_STATUS_FINISHED,
-};
-
-static enum OaReadStatus
-read_oa_samples_until(struct gen_perf_context *perf_ctx,
- uint32_t start_timestamp,
- uint32_t end_timestamp)
-{
- struct exec_node *tail_node =
- exec_list_get_tail(&perf_ctx->sample_buffers);
- struct oa_sample_buf *tail_buf =
- exec_node_data(struct oa_sample_buf, tail_node, link);
- uint32_t last_timestamp = tail_buf->last_timestamp;
-
- while (1) {
- struct oa_sample_buf *buf = get_free_sample_buf(perf_ctx);
- uint32_t offset;
- int len;
-
- while ((len = read(perf_ctx->oa_stream_fd, buf->buf,
- sizeof(buf->buf))) < 0 && errno == EINTR)
- ;
-
- if (len <= 0) {
- exec_list_push_tail(&perf_ctx->free_sample_buffers, &buf->link);
-
- if (len < 0) {
- if (errno == EAGAIN)
- return ((last_timestamp - start_timestamp) >=
- (end_timestamp - start_timestamp)) ?
- OA_READ_STATUS_FINISHED :
- OA_READ_STATUS_UNFINISHED;
- else {
- DBG("Error reading i915 perf samples: %m\n");
- }
- } else
- DBG("Spurious EOF reading i915 perf samples\n");
-
- return OA_READ_STATUS_ERROR;
- }
-
- buf->len = len;
- exec_list_push_tail(&perf_ctx->sample_buffers, &buf->link);
-
- /* Go through the reports and update the last timestamp. */
- offset = 0;
- while (offset < buf->len) {
- const struct drm_i915_perf_record_header *header =
- (const struct drm_i915_perf_record_header *) &buf->buf[offset];
- uint32_t *report = (uint32_t *) (header + 1);
-
- if (header->type == DRM_I915_PERF_RECORD_SAMPLE)
- last_timestamp = report[1];
-
- offset += header->size;
- }
-
- buf->last_timestamp = last_timestamp;
- }
-
- unreachable("not reached");
- return OA_READ_STATUS_ERROR;
-}
-
-/**
- * Try to read all the reports until either the delimiting timestamp
- * or an error arises.
- */
-static bool
-read_oa_samples_for_query(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- void *current_batch)
-{
- uint32_t *start;
- uint32_t *last;
- uint32_t *end;
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
-
- /* We need the MI_REPORT_PERF_COUNT to land before we can start
- * accumulate. */
- assert(!perf_cfg->vtbl.batch_references(current_batch, query->oa.bo) &&
- !perf_cfg->vtbl.bo_busy(query->oa.bo));
-
- /* Map the BO once here and let accumulate_oa_reports() unmap
- * it. */
- if (query->oa.map == NULL)
- query->oa.map = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->oa.bo, MAP_READ);
-
- start = last = query->oa.map;
- end = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES;
-
- if (start[0] != query->oa.begin_report_id) {
- DBG("Spurious start report id=%"PRIu32"\n", start[0]);
- return true;
- }
- if (end[0] != (query->oa.begin_report_id + 1)) {
- DBG("Spurious end report id=%"PRIu32"\n", end[0]);
- return true;
- }
-
- /* Read the reports until the end timestamp. */
- switch (read_oa_samples_until(perf_ctx, start[1], end[1])) {
- case OA_READ_STATUS_ERROR:
- /* Fallthrough and let accumulate_oa_reports() deal with the
- * error. */
- case OA_READ_STATUS_FINISHED:
- return true;
- case OA_READ_STATUS_UNFINISHED:
- return false;
- }
-
- unreachable("invalid read status");
- return false;
-}
-
-void
-gen_perf_wait_query(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- void *current_batch)
-{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
- struct brw_bo *bo = NULL;
-
- switch (query->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- bo = query->oa.bo;
- break;
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- bo = query->pipeline_stats.bo;
- break;
-
- default:
- unreachable("Unknown query type");
- break;
- }
-
- if (bo == NULL)
+ if (devinfo->gen < 8)
return;
- /* If the current batch references our results bo then we need to
- * flush first...
- */
- if (perf_cfg->vtbl.batch_references(current_batch, bo))
- perf_cfg->vtbl.batchbuffer_flush(perf_ctx->ctx, __FILE__, __LINE__);
-
- perf_cfg->vtbl.bo_wait_rendering(bo);
-
- /* Due to a race condition between the OA unit signaling report
- * availability and the report actually being written into memory,
- * we need to wait for all the reports to come in before we can
- * read them.
- */
- if (query->queryinfo->kind == GEN_PERF_QUERY_TYPE_OA ||
- query->queryinfo->kind == GEN_PERF_QUERY_TYPE_RAW) {
- while (!read_oa_samples_for_query(perf_ctx, query, current_batch))
- ;
- }
+ 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]);
}
-bool
-gen_perf_is_query_ready(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- void *current_batch)
+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)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
-
- switch (query->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- return (query->oa.results_accumulated ||
- (query->oa.bo &&
- !perf_cfg->vtbl.batch_references(current_batch, query->oa.bo) &&
- !perf_cfg->vtbl.bo_busy(query->oa.bo) &&
- read_oa_samples_for_query(perf_ctx, query, current_batch)));
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- return (query->pipeline_stats.bo &&
- !perf_cfg->vtbl.batch_references(current_batch, query->pipeline_stats.bo) &&
- !perf_cfg->vtbl.bo_busy(query->pipeline_stats.bo));
+ int i;
- default:
- unreachable("Unknown query type");
- break;
- }
-
- return false;
-}
+ 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++;
-/**
- * Remove a query from the global list of unaccumulated queries once
- * after successfully accumulating the OA reports associated with the
- * query in accumulate_oa_reports() or when discarding unwanted query
- * results.
- */
-static void
-drop_from_unaccumulated_query_list(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query)
-{
- for (int i = 0; i < perf_ctx->unaccumulated_elements; i++) {
- if (perf_ctx->unaccumulated[i] == query) {
- int last_elt = --perf_ctx->unaccumulated_elements;
-
- if (i == last_elt)
- perf_ctx->unaccumulated[i] = NULL;
- else {
- perf_ctx->unaccumulated[i] =
- perf_ctx->unaccumulated[last_elt];
- }
+ 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 */
- break;
+ /* 32x 40bit A counters... */
+ for (i = 0; i < 32; i++) {
+ accumulate_uint40(i, start, end,
+ result->accumulator + query->a_offset + i);
}
- }
- /* Drop our samples_head reference so that associated periodic
- * sample data buffers can potentially be reaped if they aren't
- * referenced by any other queries...
- */
-
- struct oa_sample_buf *buf =
- exec_node_data(struct oa_sample_buf, query->oa.samples_head, link);
-
- assert(buf->refcount > 0);
- buf->refcount--;
-
- query->oa.samples_head = NULL;
-
- reap_old_sample_buffers(perf_ctx);
-}
-
-/* In general if we see anything spurious while accumulating results,
- * we don't try and continue accumulating the current query, hoping
- * for the best, we scrap anything outstanding, and then hope for the
- * best with new queries.
- */
-static void
-discard_all_queries(struct gen_perf_context *perf_ctx)
-{
- while (perf_ctx->unaccumulated_elements) {
- struct gen_perf_query_object *query = perf_ctx->unaccumulated[0];
-
- query->oa.results_accumulated = true;
- drop_from_unaccumulated_query_list(perf_ctx, query);
-
- dec_n_users(perf_ctx);
- }
-}
-
-/**
- * Accumulate raw OA counter values based on deltas between pairs of
- * OA reports.
- *
- * Accumulation starts from the first report captured via
- * MI_REPORT_PERF_COUNT (MI_RPC) by brw_begin_perf_query() until the
- * last MI_RPC report requested by brw_end_perf_query(). Between these
- * two reports there may also some number of periodically sampled OA
- * reports collected via the i915 perf interface - depending on the
- * duration of the query.
- *
- * These periodic snapshots help to ensure we handle counter overflow
- * correctly by being frequent enough to ensure we don't miss multiple
- * overflows of a counter between snapshots. For Gen8+ the i915 perf
- * snapshots provide the extra context-switch reports that let us
- * subtract out the progress of counters associated with other
- * contexts running on the system.
- */
-static void
-accumulate_oa_reports(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query)
-{
- const struct gen_device_info *devinfo = perf_ctx->devinfo;
- uint32_t *start;
- uint32_t *last;
- uint32_t *end;
- struct exec_node *first_samples_node;
- bool in_ctx = true;
- int out_duration = 0;
-
- assert(query->oa.map != NULL);
-
- start = last = query->oa.map;
- end = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES;
-
- if (start[0] != query->oa.begin_report_id) {
- DBG("Spurious start report id=%"PRIu32"\n", start[0]);
- goto error;
- }
- if (end[0] != (query->oa.begin_report_id + 1)) {
- DBG("Spurious end report id=%"PRIu32"\n", end[0]);
- goto error;
- }
-
- /* See if we have any periodic reports to accumulate too... */
-
- /* N.B. The oa.samples_head was set when the query began and
- * pointed to the tail of the perf_ctx->sample_buffers list at
- * the time the query started. Since the buffer existed before the
- * first MI_REPORT_PERF_COUNT command was emitted we therefore know
- * that no data in this particular node's buffer can possibly be
- * associated with the query - so skip ahead one...
- */
- first_samples_node = query->oa.samples_head->next;
-
- foreach_list_typed_from(struct oa_sample_buf, buf, link,
- &perf_ctx.sample_buffers,
- first_samples_node)
- {
- int offset = 0;
-
- while (offset < buf->len) {
- const struct drm_i915_perf_record_header *header =
- (const struct drm_i915_perf_record_header *)(buf->buf + offset);
-
- assert(header->size != 0);
- assert(header->size <= buf->len);
-
- offset += header->size;
-
- switch (header->type) {
- case DRM_I915_PERF_RECORD_SAMPLE: {
- uint32_t *report = (uint32_t *)(header + 1);
- bool add = true;
-
- /* Ignore reports that come before the start marker.
- * (Note: takes care to allow overflow of 32bit timestamps)
- */
- if (gen_device_info_timebase_scale(devinfo,
- report[1] - start[1]) > 5000000000) {
- continue;
- }
-
- /* Ignore reports that come after the end marker.
- * (Note: takes care to allow overflow of 32bit timestamps)
- */
- if (gen_device_info_timebase_scale(devinfo,
- report[1] - end[1]) <= 5000000000) {
- goto end;
- }
-
- /* For Gen8+ since the counters continue while other
- * contexts are running we need to discount any unrelated
- * deltas. The hardware automatically generates a report
- * on context switch which gives us a new reference point
- * to continuing adding deltas from.
- *
- * For Haswell we can rely on the HW to stop the progress
- * of OA counters while any other context is acctive.
- */
- if (devinfo->gen >= 8) {
- if (in_ctx && report[2] != query->oa.result.hw_id) {
- DBG("i915 perf: Switch AWAY (observed by ID change)\n");
- in_ctx = false;
- out_duration = 0;
- } else if (in_ctx == false && report[2] == query->oa.result.hw_id) {
- DBG("i915 perf: Switch TO\n");
- in_ctx = true;
-
- /* From experimentation in IGT, we found that the OA unit
- * might label some report as "idle" (using an invalid
- * context ID), right after a report for a given context.
- * Deltas generated by those reports actually belong to the
- * previous context, even though they're not labelled as
- * such.
- *
- * We didn't *really* Switch AWAY in the case that we e.g.
- * saw a single periodic report while idle...
- */
- if (out_duration >= 1)
- add = false;
- } else if (in_ctx) {
- assert(report[2] == query->oa.result.hw_id);
- DBG("i915 perf: Continuation IN\n");
- } else {
- assert(report[2] != query->oa.result.hw_id);
- DBG("i915 perf: Continuation OUT\n");
- add = false;
- out_duration++;
- }
- }
-
- if (add) {
- query_result_accumulate(&query->oa.result, query->queryinfo,
- last, report);
- }
-
- last = report;
-
- break;
- }
-
- case DRM_I915_PERF_RECORD_OA_BUFFER_LOST:
- DBG("i915 perf: OA error: all reports lost\n");
- goto error;
- case DRM_I915_PERF_RECORD_OA_REPORT_LOST:
- DBG("i915 perf: OA report lost\n");
- break;
- }
+ /* 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);
}
- }
-
-end:
-
- query_result_accumulate(&query->oa.result, query->queryinfo,
- last, end);
-
- query->oa.results_accumulated = true;
- drop_from_unaccumulated_query_list(perf_ctx, query);
- dec_n_users(perf_ctx);
-
- return;
-
-error:
-
- discard_all_queries(perf_ctx);
-}
-void
-gen_perf_delete_query(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query)
-{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
-
- /* We can assume that the frontend waits for a query to complete
- * before ever calling into here, so we don't have to worry about
- * deleting an in-flight query object.
- */
- switch (query->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- if (query->oa.bo) {
- if (!query->oa.results_accumulated) {
- drop_from_unaccumulated_query_list(perf_ctx, query);
- dec_n_users(perf_ctx);
- }
-
- perf_cfg->vtbl.bo_unreference(query->oa.bo);
- query->oa.bo = NULL;
+ /* 8x 32bit B counters */
+ for (i = 0; i < 8; i++) {
+ accumulate_uint32(start + 48 + i, end + 48 + i,
+ result->accumulator + query->b_offset + i);
}
- query->oa.results_accumulated = false;
- break;
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- if (query->pipeline_stats.bo) {
- perf_cfg->vtbl.bo_unreference(query->pipeline_stats.bo);
- query->pipeline_stats.bo = NULL;
+ /* 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;
- default:
- unreachable("Unknown query type");
- break;
- }
-
- /* As an indication that the INTEL_performance_query extension is no
- * longer in use, it's a good time to free our cache of sample
- * buffers and close any current i915-perf stream.
- */
- if (--perf_ctx->n_query_instances == 0) {
- free_sample_bufs(perf_ctx);
- gen_perf_close(perf_ctx, query->queryinfo);
- }
-
- free(query);
-}
-
-#define GET_FIELD(word, field) (((word) & field ## _MASK) >> field ## _SHIFT)
+ case I915_OA_FORMAT_A45_B8_C8:
+ accumulate_uint32(start + 1, end + 1, result->accumulator); /* timestamp */
-static void
-read_gt_frequency(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *obj)
-{
- const struct gen_device_info *devinfo = perf_ctx->devinfo;
- uint32_t start = *((uint32_t *)(obj->oa.map + MI_FREQ_START_OFFSET_BYTES)),
- end = *((uint32_t *)(obj->oa.map + MI_FREQ_END_OFFSET_BYTES));
-
- switch (devinfo->gen) {
- case 7:
- case 8:
- obj->oa.gt_frequency[0] = GET_FIELD(start, GEN7_RPSTAT1_CURR_GT_FREQ) * 50ULL;
- obj->oa.gt_frequency[1] = GET_FIELD(end, GEN7_RPSTAT1_CURR_GT_FREQ) * 50ULL;
- break;
- case 9:
- case 10:
- case 11:
- obj->oa.gt_frequency[0] = GET_FIELD(start, GEN9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL;
- obj->oa.gt_frequency[1] = GET_FIELD(end, GEN9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL;
+ for (i = 0; i < 61; i++) {
+ accumulate_uint32(start + 3 + i, end + 3 + i,
+ result->accumulator + query->a_offset + i);
+ }
break;
+
default:
- unreachable("unexpected gen");
+ unreachable("Can't accumulate OA counters in unknown format");
}
- /* Put the numbers into Hz. */
- obj->oa.gt_frequency[0] *= 1000000ULL;
- obj->oa.gt_frequency[1] *= 1000000ULL;
}
-static int
-get_oa_counter_data(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- size_t data_size,
- uint8_t *data)
+void
+gen_perf_query_result_clear(struct gen_perf_query_result *result)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
- const struct gen_perf_query_info *queryinfo = query->queryinfo;
- int n_counters = queryinfo->n_counters;
- int written = 0;
-
- for (int i = 0; i < n_counters; i++) {
- const struct gen_perf_query_counter *counter = &queryinfo->counters[i];
- uint64_t *out_uint64;
- float *out_float;
- size_t counter_size = gen_perf_query_counter_get_size(counter);
-
- if (counter_size) {
- switch (counter->data_type) {
- case GEN_PERF_COUNTER_DATA_TYPE_UINT64:
- out_uint64 = (uint64_t *)(data + counter->offset);
- *out_uint64 =
- counter->oa_counter_read_uint64(perf_cfg, queryinfo,
- query->oa.result.accumulator);
- break;
- case GEN_PERF_COUNTER_DATA_TYPE_FLOAT:
- out_float = (float *)(data + counter->offset);
- *out_float =
- counter->oa_counter_read_float(perf_cfg, queryinfo,
- query->oa.result.accumulator);
- break;
- default:
- /* So far we aren't using uint32, double or bool32... */
- unreachable("unexpected counter data type");
- }
- written = counter->offset + counter_size;
- }
- }
-
- return written;
+ memset(result, 0, sizeof(*result));
+ result->hw_id = OA_REPORT_INVALID_CTX_ID; /* invalid */
}
static int
-get_pipeline_stats_data(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- size_t data_size,
- uint8_t *data)
-
+gen_perf_compare_query_names(const void *v1, const void *v2)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
- const struct gen_perf_query_info *queryinfo = query->queryinfo;
- int n_counters = queryinfo->n_counters;
- uint8_t *p = data;
-
- uint64_t *start = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->pipeline_stats.bo, MAP_READ);
- uint64_t *end = start + (STATS_BO_END_OFFSET_BYTES / sizeof(uint64_t));
-
- for (int i = 0; i < n_counters; i++) {
- const struct gen_perf_query_counter *counter = &queryinfo->counters[i];
- uint64_t value = end[i] - start[i];
-
- if (counter->pipeline_stat.numerator !=
- counter->pipeline_stat.denominator) {
- value *= counter->pipeline_stat.numerator;
- value /= counter->pipeline_stat.denominator;
- }
+ const struct gen_perf_query_info *q1 = v1;
+ const struct gen_perf_query_info *q2 = v2;
- *((uint64_t *)p) = value;
- p += 8;
- }
-
- perf_cfg->vtbl.bo_unmap(query->pipeline_stats.bo);
-
- return p - data;
+ return strcmp(q1->name, q2->name);
}
void
-gen_perf_get_query_data(struct gen_perf_context *perf_ctx,
- struct gen_perf_query_object *query,
- int data_size,
- unsigned *data,
- unsigned *bytes_written)
+gen_perf_init_metrics(struct gen_perf_config *perf_cfg,
+ const struct gen_device_info *devinfo,
+ int drm_fd,
+ bool include_pipeline_statistics)
{
- struct gen_perf_config *perf_cfg = perf_ctx->perf;
- int written = 0;
-
- switch (query->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- if (!query->oa.results_accumulated) {
- read_gt_frequency(perf_ctx, query);
- uint32_t *begin_report = query->oa.map;
- uint32_t *end_report = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES;
- query_result_read_frequencies(&query->oa.result,
- perf_ctx->devinfo,
- begin_report,
- end_report);
- accumulate_oa_reports(perf_ctx, query);
- assert(query->oa.results_accumulated);
-
- perf_cfg->vtbl.bo_unmap(query->oa.bo);
- query->oa.map = NULL;
- }
- if (query->queryinfo->kind == GEN_PERF_QUERY_TYPE_OA) {
- written = get_oa_counter_data(perf_ctx, query, data_size, (uint8_t *)data);
- } else {
- const struct gen_device_info *devinfo = perf_ctx->devinfo;
-
- written = gen_perf_query_result_write_mdapi((uint8_t *)data, data_size,
- devinfo, &query->oa.result,
- query->oa.gt_frequency[0],
- query->oa.gt_frequency[1]);
- }
- break;
-
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- written = get_pipeline_stats_data(perf_ctx, query, data_size, (uint8_t *)data);
- break;
-
- default:
- unreachable("Unknown query type");
- break;
+ if (include_pipeline_statistics) {
+ load_pipeline_statistic_metrics(perf_cfg, devinfo);
+ gen_perf_register_mdapi_statistic_query(perf_cfg, devinfo);
}
- if (bytes_written)
- *bytes_written = written;
-}
+ bool oa_metrics = oa_metrics_available(perf_cfg, drm_fd, devinfo);
+ if (oa_metrics)
+ load_oa_metrics(perf_cfg, drm_fd, devinfo);
-void
-gen_perf_dump_query_count(struct gen_perf_context *perf_ctx)
-{
- DBG("Queries: (Open queries = %d, OA users = %d)\n",
- perf_ctx->n_active_oa_queries, perf_ctx->n_oa_users);
-}
+ /* sort query groups by name */
+ qsort(perf_cfg->queries, perf_cfg->n_queries,
+ sizeof(perf_cfg->queries[0]), gen_perf_compare_query_names);
-void
-gen_perf_dump_query(struct gen_perf_context *ctx,
- struct gen_perf_query_object *obj,
- void *current_batch)
-{
- switch (obj->queryinfo->kind) {
- case GEN_PERF_QUERY_TYPE_OA:
- case GEN_PERF_QUERY_TYPE_RAW:
- DBG("BO: %-4s OA data: %-10s %-15s\n",
- obj->oa.bo ? "yes," : "no,",
- gen_perf_is_query_ready(ctx, obj, current_batch) ? "ready," : "not ready,",
- obj->oa.results_accumulated ? "accumulated" : "not accumulated");
- break;
- case GEN_PERF_QUERY_TYPE_PIPELINE:
- DBG("BO: %-4s\n",
- obj->pipeline_stats.bo ? "yes" : "no");
- break;
- default:
- unreachable("Unknown query type");
- break;
- }
+ build_unique_counter_list(perf_cfg);
+
+ if (oa_metrics)
+ gen_perf_register_mdapi_oa_query(perf_cfg, devinfo);
}
projects / mesa.git / blobdiff