src/gallium/drivers/ilo/ilo_cp.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_builder_mi.h"
  31 #include "ilo_shader.h"
  32 #include "ilo_cp.h"
  33
  34 static const struct ilo_cp_owner ilo_cp_default_owner;
  35
  36 static void
  37 ilo_cp_release_owner(struct ilo_cp *cp)
  38 {
  39    if (cp->owner != &ilo_cp_default_owner) {
  40       const struct ilo_cp_owner *owner = cp->owner;
  41
  42       cp->owner = &ilo_cp_default_owner;
  43
  44       assert(ilo_cp_space(cp) >= owner->reserve);
  45       owner->release(cp, owner->data);
  46    }
  47 }
  48
  49 /**
  50  * Set the parser owner.  If this is a new owner or a new ring, the old owner
  51  * is released and the new owner's own() is called.
  52  *
  53  * The parser may implicitly submit if there is a ring change or there is not
  54  * enough space for the new owner.
  55  */
  56 void
  57 ilo_cp_set_owner(struct ilo_cp *cp, enum intel_ring_type ring,
  58                  const struct ilo_cp_owner *owner)
  59 {
  60    if (!owner)
  61       owner = &ilo_cp_default_owner;
  62
  63    if (cp->ring != ring) {
  64       ilo_cp_submit(cp, "ring change");
  65       cp->ring = ring;
  66    }
  67
  68    if (cp->owner != owner) {
  69       ilo_cp_release_owner(cp);
  70
  71       /* multiply by 2 because there are own() and release() */
  72       if (ilo_cp_space(cp) < owner->reserve * 2) {
  73          ilo_cp_submit(cp, "new owner");
  74          assert(ilo_cp_space(cp) >= owner->reserve * 2);
  75       }
  76
  77       cp->owner = owner;
  78
  79       assert(ilo_cp_space(cp) >= owner->reserve);
  80       cp->owner->own(cp, cp->owner->data);
  81    }
  82 }
  83
  84 static struct intel_bo *
  85 ilo_cp_end_batch(struct ilo_cp *cp, unsigned *used)
  86 {
  87    struct intel_bo *bo;
  88
  89    ilo_cp_release_owner(cp);
  90
  91    if (!ilo_builder_batch_used(&cp->builder)) {
  92       ilo_builder_batch_discard(&cp->builder);
  93       return NULL;
  94    }
  95
  96    /* see ilo_cp_space() */
  97    assert(ilo_builder_batch_space(&cp->builder) >= 2);
  98    gen6_mi_batch_buffer_end(&cp->builder);
  99
 100    bo = ilo_builder_end(&cp->builder, used);
 101
 102    /* we have to assume that kernel uploads also failed */
 103    if (!bo)
 104       ilo_shader_cache_invalidate(cp->shader_cache);
 105
 106    return bo;
 107 }
 108
 109 /**
 110  * Flush the command parser and execute the commands.  When the parser buffer
 111  * is empty, the callback is not invoked.
 112  */
 113 void
 114 ilo_cp_submit_internal(struct ilo_cp *cp)
 115 {
 116    const bool do_exec = !(ilo_debug & ILO_DEBUG_NOHW);
 117    struct intel_bo *bo;
 118    unsigned used;
 119    int err;
 120
 121    bo = ilo_cp_end_batch(cp, &used);
 122    if (!bo)
 123       return;
 124
 125    if (likely(do_exec)) {
 126       err = intel_winsys_submit_bo(cp->winsys, cp->ring,
 127             bo, used, cp->render_ctx, cp->one_off_flags);
 128    }
 129    else {
 130       err = 0;
 131    }
 132
 133    cp->one_off_flags = 0;
 134
 135    if (!err) {
 136       if (cp->last_submitted_bo)
 137          intel_bo_unreference(cp->last_submitted_bo);
 138       cp->last_submitted_bo = bo;
 139       intel_bo_reference(cp->last_submitted_bo);
 140
 141       if (ilo_debug & ILO_DEBUG_BATCH)
 142          ilo_builder_decode(&cp->builder);
 143
 144       if (cp->submit_callback)
 145          cp->submit_callback(cp, cp->submit_callback_data);
 146    }
 147
 148    ilo_builder_begin(&cp->builder);
 149 }
 150
 151 /**
 152  * Destroy the command parser.
 153  */
 154 void
 155 ilo_cp_destroy(struct ilo_cp *cp)
 156 {
 157    ilo_builder_reset(&cp->builder);
 158
 159    intel_winsys_destroy_context(cp->winsys, cp->render_ctx);
 160    FREE(cp);
 161 }
 162
 163 /**
 164  * Create a command parser.
 165  */
 166 struct ilo_cp *
 167 ilo_cp_create(const struct ilo_dev_info *dev,
 168               struct intel_winsys *winsys,
 169               struct ilo_shader_cache *shc)
 170 {
 171    struct ilo_cp *cp;
 172
 173    cp = CALLOC_STRUCT(ilo_cp);
 174    if (!cp)
 175       return NULL;
 176
 177    cp->winsys = winsys;
 178    cp->shader_cache = shc;
 179    cp->render_ctx = intel_winsys_create_context(winsys);
 180    if (!cp->render_ctx) {
 181       FREE(cp);
 182       return NULL;
 183    }
 184
 185    cp->ring = INTEL_RING_RENDER;
 186    cp->owner = &ilo_cp_default_owner;
 187
 188    ilo_builder_init(&cp->builder, dev, winsys);
 189
 190    if (!ilo_builder_begin(&cp->builder)) {
 191       ilo_cp_destroy(cp);
 192       return NULL;
 193    }
 194
 195    return cp;
 196 }