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 "core/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.  The parser may implicitly
  52  * submit if there is a ring change.
  53  *
  54  * own() is called before \p owner owns the parser.  It must make sure there
  55  * is more space than \p owner->reserve when it returns.  Calling
  56  * ilo_cp_submit() is allowed.
  57  *
  58  * release() will be called after \p owner loses the parser.  That may happen
  59  * just before the parser submits and ilo_cp_submit() is not allowed.
  60  */
  61 void
  62 ilo_cp_set_owner(struct ilo_cp *cp, enum intel_ring_type ring,
  63                  const struct ilo_cp_owner *owner)
  64 {
  65    if (!owner)
  66       owner = &ilo_cp_default_owner;
  67
  68    if (cp->ring != ring) {
  69       ilo_cp_submit(cp, "ring change");
  70       cp->ring = ring;
  71    }
  72
  73    if (cp->owner != owner) {
  74       ilo_cp_release_owner(cp);
  75
  76       owner->own(cp, owner->data);
  77
  78       assert(ilo_cp_space(cp) >= owner->reserve);
  79       cp->owner = owner;
  80    }
  81 }
  82
  83 static struct intel_bo *
  84 ilo_cp_end_batch(struct ilo_cp *cp, unsigned *used)
  85 {
  86    struct intel_bo *bo;
  87
  88    ilo_cp_release_owner(cp);
  89
  90    if (!ilo_builder_batch_used(&cp->builder)) {
  91       ilo_builder_batch_discard(&cp->builder);
  92       return NULL;
  93    }
  94
  95    /* see ilo_cp_space() */
  96    assert(ilo_builder_batch_space(&cp->builder) >= 2);
  97    gen6_mi_batch_buffer_end(&cp->builder);
  98
  99    bo = ilo_builder_end(&cp->builder, used);
 100
 101    /* we have to assume that kernel uploads also failed */
 102    if (!bo)
 103       ilo_shader_cache_invalidate(cp->shader_cache);
 104
 105    return bo;
 106 }
 107
 108 static bool
 109 ilo_cp_detect_hang(struct ilo_cp *cp)
 110 {
 111    uint32_t active_lost, pending_lost;
 112    bool guilty = false;
 113
 114    if (likely(!(ilo_debug & ILO_DEBUG_HANG)))
 115       return false;
 116
 117    /* wait and get reset stats */
 118    if (intel_bo_wait(cp->last_submitted_bo, -1) ||
 119        intel_winsys_get_reset_stats(cp->winsys, cp->render_ctx,
 120           &active_lost, &pending_lost))
 121       return false;
 122
 123    if (cp->active_lost != active_lost) {
 124       ilo_err("GPU hang caused by bo %p\n", cp->last_submitted_bo);
 125       cp->active_lost = active_lost;
 126       guilty = true;
 127    }
 128
 129    if (cp->pending_lost != pending_lost) {
 130       ilo_err("GPU hang detected\n");
 131       cp->pending_lost = pending_lost;
 132    }
 133
 134    return guilty;
 135 }
 136
 137 /**
 138  * Flush the command parser and execute the commands.  When the parser buffer
 139  * is empty, the callback is not invoked.
 140  */
 141 void
 142 ilo_cp_submit_internal(struct ilo_cp *cp)
 143 {
 144    const bool do_exec = !(ilo_debug & ILO_DEBUG_NOHW);
 145    struct intel_bo *bo;
 146    unsigned used;
 147    int err;
 148
 149    bo = ilo_cp_end_batch(cp, &used);
 150    if (!bo)
 151       return;
 152
 153    if (likely(do_exec)) {
 154       err = intel_winsys_submit_bo(cp->winsys, cp->ring,
 155             bo, used, cp->render_ctx, cp->one_off_flags);
 156    }
 157    else {
 158       err = 0;
 159    }
 160
 161    cp->one_off_flags = 0;
 162
 163    if (!err) {
 164       bool guilty;
 165
 166       intel_bo_unref(cp->last_submitted_bo);
 167       cp->last_submitted_bo = intel_bo_ref(bo);
 168
 169       guilty = ilo_cp_detect_hang(cp);
 170
 171       if (unlikely((ilo_debug & ILO_DEBUG_BATCH) || guilty)) {
 172          ilo_builder_decode(&cp->builder);
 173          if (guilty)
 174             abort();
 175       }
 176
 177       if (cp->submit_callback)
 178          cp->submit_callback(cp, cp->submit_callback_data);
 179    }
 180
 181    ilo_builder_begin(&cp->builder);
 182 }
 183
 184 /**
 185  * Destroy the command parser.
 186  */
 187 void
 188 ilo_cp_destroy(struct ilo_cp *cp)
 189 {
 190    ilo_builder_reset(&cp->builder);
 191
 192    intel_winsys_destroy_context(cp->winsys, cp->render_ctx);
 193    FREE(cp);
 194 }
 195
 196 /**
 197  * Create a command parser.
 198  */
 199 struct ilo_cp *
 200 ilo_cp_create(const struct ilo_dev_info *dev,
 201               struct intel_winsys *winsys,
 202               struct ilo_shader_cache *shc)
 203 {
 204    struct ilo_cp *cp;
 205
 206    cp = CALLOC_STRUCT(ilo_cp);
 207    if (!cp)
 208       return NULL;
 209
 210    cp->winsys = winsys;
 211    cp->shader_cache = shc;
 212    cp->render_ctx = intel_winsys_create_context(winsys);
 213    if (!cp->render_ctx) {
 214       FREE(cp);
 215       return NULL;
 216    }
 217
 218    cp->ring = INTEL_RING_RENDER;
 219    cp->owner = &ilo_cp_default_owner;
 220
 221    ilo_builder_init(&cp->builder, dev, winsys);
 222
 223    if (!ilo_builder_begin(&cp->builder)) {
 224       ilo_cp_destroy(cp);
 225       return NULL;
 226    }
 227
 228    return cp;
 229 }