src/gallium/drivers/ilo/ilo_query.c

   1 /*
   2  * Mesa 3-D graphics library
   3  *
   4  * Copyright (C) 2012-2013 LunarG, Inc.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included
  14  * in all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Authors:
  25  *    Chia-I Wu <olv@lunarg.com>
  26  */
  27
  28 #include "intel_winsys.h"
  29
  30 #include "ilo_3d.h"
  31 #include "ilo_context.h"
  32 #include "ilo_cp.h"
  33 #include "ilo_query.h"
  34
  35 static const struct {
  36    const char *name;
  37
  38    void (*begin)(struct ilo_context *ilo, struct ilo_query *q);
  39    void (*end)(struct ilo_context *ilo, struct ilo_query *q);
  40    void (*process)(struct ilo_context *ilo, struct ilo_query *q);
  41 } query_info[PIPE_QUERY_TYPES] = {
  42 #define INFO(prefix, desc) {        \
  43    .name = desc,                    \
  44    .begin = prefix ## _begin_query, \
  45    .end = prefix ## _end_query,     \
  46    .process = prefix ## _process_query, \
  47 }
  48 #define INFOX(prefix, desc) { desc, NULL, NULL, NULL, }
  49
  50    [PIPE_QUERY_OCCLUSION_COUNTER]      = INFO(ilo_3d, "occlusion counter"),
  51    [PIPE_QUERY_OCCLUSION_PREDICATE]    = INFOX(ilo_3d, "occlusion pred."),
  52    [PIPE_QUERY_TIMESTAMP]              = INFO(ilo_3d, "timestamp"),
  53    [PIPE_QUERY_TIMESTAMP_DISJOINT]     = INFOX(ilo_3d, "timestamp disjoint"),
  54    [PIPE_QUERY_TIME_ELAPSED]           = INFO(ilo_3d, "time elapsed"),
  55    [PIPE_QUERY_PRIMITIVES_GENERATED]   = INFO(ilo_3d, "primitives generated"),
  56    [PIPE_QUERY_PRIMITIVES_EMITTED]     = INFO(ilo_3d, "primitives emitted"),
  57    [PIPE_QUERY_SO_STATISTICS]          = INFOX(ilo_3d, "so statistics"),
  58    [PIPE_QUERY_SO_OVERFLOW_PREDICATE]  = INFOX(ilo_3d, "so overflow pred."),
  59    [PIPE_QUERY_GPU_FINISHED]           = INFOX(ilo_3d, "gpu finished"),
  60    [PIPE_QUERY_PIPELINE_STATISTICS]    = INFOX(ilo_3d, "pipeline statistics"),
  61
  62 #undef INFO
  63 #undef INFOX
  64 };
  65
  66 static inline struct ilo_query *
  67 ilo_query(struct pipe_query *query)
  68 {
  69    return (struct ilo_query *) query;
  70 }
  71
  72 static struct pipe_query *
  73 ilo_create_query(struct pipe_context *pipe, unsigned query_type)
  74 {
  75    struct ilo_query *q;
  76
  77    switch (query_type) {
  78    case PIPE_QUERY_OCCLUSION_COUNTER:
  79    case PIPE_QUERY_TIMESTAMP:
  80    case PIPE_QUERY_TIME_ELAPSED:
  81    case PIPE_QUERY_PRIMITIVES_GENERATED:
  82    case PIPE_QUERY_PRIMITIVES_EMITTED:
  83       break;
  84    default:
  85       return NULL;
  86    }
  87
  88    q = CALLOC_STRUCT(ilo_query);
  89    if (!q)
  90       return NULL;
  91
  92    q->type = query_type;
  93    list_inithead(&q->list);
  94
  95    return (struct pipe_query *) q;
  96 }
  97
  98 static void
  99 ilo_destroy_query(struct pipe_context *pipe, struct pipe_query *query)
 100 {
 101    struct ilo_query *q = ilo_query(query);
 102
 103    if (q->bo)
 104       intel_bo_unreference(q->bo);
 105
 106    FREE(q);
 107 }
 108
 109 static void
 110 ilo_begin_query(struct pipe_context *pipe, struct pipe_query *query)
 111 {
 112    struct ilo_context *ilo = ilo_context(pipe);
 113    struct ilo_query *q = ilo_query(query);
 114
 115    q->active = true;
 116
 117    query_info[q->type].begin(ilo, q);
 118 }
 119
 120 static void
 121 ilo_end_query(struct pipe_context *pipe, struct pipe_query *query)
 122 {
 123    struct ilo_context *ilo = ilo_context(pipe);
 124    struct ilo_query *q = ilo_query(query);
 125
 126    query_info[q->type].end(ilo, q);
 127
 128    /*
 129     * some queries such as timestamp query does not require a call to
 130     * begin_query() so q->active is always false
 131     */
 132    q->active = false;
 133 }
 134
 135 /**
 136  * The type (union pipe_query_result) indicates only the size of the buffer.
 137  * Callers expect the result to be "serialized".
 138  */
 139 static void
 140 serialize_query_data(unsigned type, const union pipe_query_result *data,
 141                      void *buf)
 142 {
 143    switch (type) {
 144    case PIPE_QUERY_OCCLUSION_COUNTER:
 145    case PIPE_QUERY_TIMESTAMP:
 146    case PIPE_QUERY_TIME_ELAPSED:
 147    case PIPE_QUERY_PRIMITIVES_GENERATED:
 148    case PIPE_QUERY_PRIMITIVES_EMITTED:
 149       {
 150          uint64_t *r = buf;
 151          r[0] = data->u64;
 152       }
 153       break;
 154    default:
 155       memset(buf, 0, sizeof(union pipe_query_result));
 156       break;
 157    }
 158 }
 159
 160 static boolean
 161 ilo_get_query_result(struct pipe_context *pipe, struct pipe_query *query,
 162                      boolean wait, union pipe_query_result *result)
 163 {
 164    struct ilo_context *ilo = ilo_context(pipe);
 165    struct ilo_query *q = ilo_query(query);
 166
 167    if (q->active)
 168       return false;
 169
 170    if (q->bo) {
 171       if (intel_bo_references(ilo->cp->bo, q->bo))
 172          ilo_cp_flush(ilo->cp);
 173
 174       if (!wait && intel_bo_is_busy(q->bo))
 175          return false;
 176
 177       query_info[q->type].process(ilo, q);
 178    }
 179
 180    if (result)
 181       serialize_query_data(q->type, &q->data, (void *) result);
 182
 183    return true;
 184 }
 185
 186 /**
 187  * Allocate a query bo for reading hardware statistics.
 188  *
 189  * \param reg_count specifies how many registers need to be read.
 190  * \param repeat_count specifies how many times the registers are read.  If
 191  *        zero or negative, a 4KB bo is allocated.
 192  */
 193 bool
 194 ilo_query_alloc_bo(struct ilo_query *q, int reg_count, int repeat_count,
 195                    struct intel_winsys *winsys)
 196 {
 197    const char *name;
 198    int reg_total;
 199
 200    name = query_info[q->type].name;
 201
 202    reg_total = reg_count * repeat_count;
 203    if (reg_total <= 0)
 204       reg_total = 4096 / sizeof(uint64_t);
 205
 206    /* (re-)allocate the bo */
 207    if (q->reg_total < reg_total) {
 208       /* registers are 64-bit */
 209       const int size = reg_total * sizeof(uint64_t);
 210
 211       if (q->bo)
 212          intel_bo_unreference(q->bo);
 213
 214       q->bo = intel_winsys_alloc_buffer(winsys, name, size, 0);
 215       q->reg_total = (q->bo) ? reg_total : 0;
 216    }
 217
 218    /* avoid partial reads */
 219    if (reg_count)
 220       q->reg_total -= q->reg_total % reg_count;
 221
 222    q->reg_read = 0;
 223
 224    return (q->bo != NULL);
 225 }
 226
 227 /**
 228  * Initialize query-related functions.
 229  */
 230 void
 231 ilo_init_query_functions(struct ilo_context *ilo)
 232 {
 233    ilo->base.create_query = ilo_create_query;
 234    ilo->base.destroy_query = ilo_destroy_query;
 235    ilo->base.begin_query = ilo_begin_query;
 236    ilo->base.end_query = ilo_end_query;
 237    ilo->base.get_query_result = ilo_get_query_result;
 238 }