src/intel/perf/gen_perf.h

   1 /*
   2  * Copyright © 2018 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #ifndef GEN_PERF_H
  25 #define GEN_PERF_H
  26
  27 #include <stdio.h>
  28 #include <stdint.h>
  29 #include <string.h>
  30
  31 #if defined(MAJOR_IN_SYSMACROS)
  32 #include <sys/sysmacros.h>
  33 #elif defined(MAJOR_IN_MKDEV)
  34 #include <sys/mkdev.h>
  35 #endif
  36
  37 #include "util/hash_table.h"
  38 #include "compiler/glsl/list.h"
  39 #include "util/ralloc.h"
  40
  41 struct gen_device_info;
  42
  43 struct gen_perf_config;
  44 struct gen_perf_query_info;
  45
  46 enum gen_perf_counter_type {
  47    GEN_PERF_COUNTER_TYPE_EVENT,
  48    GEN_PERF_COUNTER_TYPE_DURATION_NORM,
  49    GEN_PERF_COUNTER_TYPE_DURATION_RAW,
  50    GEN_PERF_COUNTER_TYPE_THROUGHPUT,
  51    GEN_PERF_COUNTER_TYPE_RAW,
  52    GEN_PERF_COUNTER_TYPE_TIMESTAMP,
  53 };
  54
  55 enum gen_perf_counter_data_type {
  56    GEN_PERF_COUNTER_DATA_TYPE_BOOL32,
  57    GEN_PERF_COUNTER_DATA_TYPE_UINT32,
  58    GEN_PERF_COUNTER_DATA_TYPE_UINT64,
  59    GEN_PERF_COUNTER_DATA_TYPE_FLOAT,
  60    GEN_PERF_COUNTER_DATA_TYPE_DOUBLE,
  61 };
  62
  63 struct gen_pipeline_stat {
  64    uint32_t reg;
  65    uint32_t numerator;
  66    uint32_t denominator;
  67 };
  68
  69 /*
  70  * The largest OA formats we can use include:
  71  * For Haswell:
  72  *   1 timestamp, 45 A counters, 8 B counters and 8 C counters.
  73  * For Gen8+
  74  *   1 timestamp, 1 clock, 36 A counters, 8 B counters and 8 C counters
  75  */
  76 #define MAX_OA_REPORT_COUNTERS 62
  77
  78 /*
  79  * When currently allocate only one page for pipeline statistics queries. Here
  80  * we derived the maximum number of counters for that amount.
  81  */
  82 #define STATS_BO_SIZE               4096
  83 #define STATS_BO_END_OFFSET_BYTES   (STATS_BO_SIZE / 2)
  84 #define MAX_STAT_COUNTERS           (STATS_BO_END_OFFSET_BYTES / 8)
  85
  86 #define I915_PERF_OA_SAMPLE_SIZE (8 +   /* drm_i915_perf_record_header */ \
  87                                   256)  /* OA counter report */
  88
  89 struct gen_perf_query_result {
  90    /**
  91     * Storage for the final accumulated OA counters.
  92     */
  93    uint64_t accumulator[MAX_OA_REPORT_COUNTERS];
  94
  95    /**
  96     * Hw ID used by the context on which the query was running.
  97     */
  98    uint32_t hw_id;
  99
 100    /**
 101     * Number of reports accumulated to produce the results.
 102     */
 103    uint32_t reports_accumulated;
 104
 105    /**
 106     * Frequency in the slices of the GT at the begin and end of the
 107     * query.
 108     */
 109    uint64_t slice_frequency[2];
 110
 111    /**
 112     * Frequency in the unslice of the GT at the begin and end of the
 113     * query.
 114     */
 115    uint64_t unslice_frequency[2];
 116
 117    /**
 118     * Timestamp of the query.
 119     */
 120    uint64_t begin_timestamp;
 121
 122    /**
 123     * Whether the query was interrupted by another workload (aka preemption).
 124     */
 125    bool query_disjoint;
 126 };
 127
 128 struct gen_perf_query_counter {
 129    const char *name;
 130    const char *desc;
 131    enum gen_perf_counter_type type;
 132    enum gen_perf_counter_data_type data_type;
 133    uint64_t raw_max;
 134    size_t offset;
 135
 136    union {
 137       uint64_t (*oa_counter_read_uint64)(struct gen_perf_config *perf,
 138                                          const struct gen_perf_query_info *query,
 139                                          const uint64_t *accumulator);
 140       float (*oa_counter_read_float)(struct gen_perf_config *perf,
 141                                      const struct gen_perf_query_info *query,
 142                                      const uint64_t *accumulator);
 143       struct gen_pipeline_stat pipeline_stat;
 144    };
 145 };
 146
 147 struct gen_perf_query_register_prog {
 148    uint32_t reg;
 149    uint32_t val;
 150 };
 151
 152 /* Register programming for a given query */
 153 struct gen_perf_registers {
 154    struct gen_perf_query_register_prog *flex_regs;
 155    uint32_t n_flex_regs;
 156
 157    struct gen_perf_query_register_prog *mux_regs;
 158    uint32_t n_mux_regs;
 159
 160    struct gen_perf_query_register_prog *b_counter_regs;
 161    uint32_t n_b_counter_regs;
 162 };
 163
 164 struct gen_perf_query_info {
 165    enum gen_perf_query_type {
 166       GEN_PERF_QUERY_TYPE_OA,
 167       GEN_PERF_QUERY_TYPE_RAW,
 168       GEN_PERF_QUERY_TYPE_PIPELINE,
 169    } kind;
 170    const char *name;
 171    const char *guid;
 172    struct gen_perf_query_counter *counters;
 173    int n_counters;
 174    int max_counters;
 175    size_t data_size;
 176
 177    /* OA specific */
 178    uint64_t oa_metrics_set_id;
 179    int oa_format;
 180
 181    /* For indexing into the accumulator[] ... */
 182    int gpu_time_offset;
 183    int gpu_clock_offset;
 184    int a_offset;
 185    int b_offset;
 186    int c_offset;
 187
 188    struct gen_perf_registers config;
 189 };
 190
 191 struct gen_perf_config {
 192    bool i915_query_supported;
 193
 194    struct gen_perf_query_info *queries;
 195    int n_queries;
 196
 197    /* Variables referenced in the XML meta data for OA performance
 198     * counters, e.g in the normalization equations.
 199     *
 200     * All uint64_t for consistent operand types in generated code
 201     */
 202    struct {
 203       uint64_t timestamp_frequency; /** $GpuTimestampFrequency */
 204       uint64_t n_eus;               /** $EuCoresTotalCount */
 205       uint64_t n_eu_slices;         /** $EuSlicesTotalCount */
 206       uint64_t n_eu_sub_slices;     /** $EuSubslicesTotalCount */
 207       uint64_t eu_threads_count;    /** $EuThreadsCount */
 208       uint64_t slice_mask;          /** $SliceMask */
 209       uint64_t subslice_mask;       /** $SubsliceMask */
 210       uint64_t gt_min_freq;         /** $GpuMinFrequency */
 211       uint64_t gt_max_freq;         /** $GpuMaxFrequency */
 212       uint64_t revision;            /** $SkuRevisionId */
 213    } sys_vars;
 214
 215    /* OA metric sets, indexed by GUID, as know by Mesa at build time, to
 216     * cross-reference with the GUIDs of configs advertised by the kernel at
 217     * runtime
 218     */
 219    struct hash_table *oa_metrics_table;
 220
 221    /* Location of the device's sysfs entry. */
 222    char sysfs_dev_dir[256];
 223
 224    struct {
 225       void *(*bo_alloc)(void *bufmgr, const char *name, uint64_t size);
 226       void (*bo_unreference)(void *bo);
 227       void *(*bo_map)(void *ctx, void *bo, unsigned flags);
 228       void (*bo_unmap)(void *bo);
 229       bool (*batch_references)(void *batch, void *bo);
 230       void (*bo_wait_rendering)(void *bo);
 231       int (*bo_busy)(void *bo);
 232       void (*emit_stall_at_pixel_scoreboard)(void *ctx);
 233       void (*emit_mi_report_perf_count)(void *ctx,
 234                                         void *bo,
 235                                         uint32_t offset_in_bytes,
 236                                         uint32_t report_id);
 237       void (*batchbuffer_flush)(void *ctx,
 238                                 const char *file, int line);
 239       void (*store_register_mem)(void *ctx, void *bo, uint32_t reg, uint32_t reg_size, uint32_t offset);
 240
 241    } vtbl;
 242 };
 243
 244 void gen_perf_init_metrics(struct gen_perf_config *perf_cfg,
 245                            const struct gen_device_info *devinfo,
 246                            int drm_fd);
 247
 248 /** Query i915 for a metric id using guid.
 249  */
 250 bool gen_perf_load_metric_id(struct gen_perf_config *perf_cfg,
 251                              const char *guid,
 252                              uint64_t *metric_id);
 253
 254 /** Load a configuation's content from i915 using a guid.
 255  */
 256 struct gen_perf_registers *gen_perf_load_configuration(struct gen_perf_config *perf_cfg,
 257                                                       int fd, const char *guid);
 258
 259 /** Store a configuration into i915 using guid and return a new metric id.
 260  *
 261  * If guid is NULL, then a generated one will be provided by hashing the
 262  * content of the configuration.
 263  */
 264 uint64_t gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd,
 265                                       const struct gen_perf_registers *config,
 266                                       const char *guid);
 267
 268 /** Read the slice/unslice frequency from 2 OA reports and store then into
 269  *  result.
 270  */
 271 void gen_perf_query_result_read_frequencies(struct gen_perf_query_result *result,
 272                                             const struct gen_device_info *devinfo,
 273                                             const uint32_t *start,
 274                                             const uint32_t *end);
 275 /** Accumulate the delta between 2 OA reports into result for a given query.
 276  */
 277 void gen_perf_query_result_accumulate(struct gen_perf_query_result *result,
 278                                       const struct gen_perf_query_info *query,
 279                                       const uint32_t *start,
 280                                       const uint32_t *end);
 281 void gen_perf_query_result_clear(struct gen_perf_query_result *result);
 282
 283 static inline size_t
 284 gen_perf_query_counter_get_size(const struct gen_perf_query_counter *counter)
 285 {
 286    switch (counter->data_type) {
 287    case GEN_PERF_COUNTER_DATA_TYPE_BOOL32:
 288       return sizeof(uint32_t);
 289    case GEN_PERF_COUNTER_DATA_TYPE_UINT32:
 290       return sizeof(uint32_t);
 291    case GEN_PERF_COUNTER_DATA_TYPE_UINT64:
 292       return sizeof(uint64_t);
 293    case GEN_PERF_COUNTER_DATA_TYPE_FLOAT:
 294       return sizeof(float);
 295    case GEN_PERF_COUNTER_DATA_TYPE_DOUBLE:
 296       return sizeof(double);
 297    default:
 298       unreachable("invalid counter data type");
 299    }
 300 }
 301
 302 static inline struct gen_perf_config *
 303 gen_perf_new(void *ctx)
 304 {
 305    struct gen_perf_config *perf = rzalloc(ctx, struct gen_perf_config);
 306    return perf;
 307 }
 308
 309 #endif /* GEN_PERF_H */