src/gallium/drivers/cell/ppu/cell_fence.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <unistd.h>
  29 #include "util/u_memory.h"
  30 #include "pipe/p_inlines.h"
  31 #include "cell_context.h"
  32 #include "cell_batch.h"
  33 #include "cell_fence.h"
  34 #include "cell_texture.h"
  35
  36
  37 void
  38 cell_fence_init(struct cell_fence *fence)
  39 {
  40    uint i;
  41    ASSERT_ALIGN16(fence->status);
  42    for (i = 0; i < CELL_MAX_SPUS; i++) {
  43       fence->status[i][0] = CELL_FENCE_IDLE;
  44    }
  45 }
  46
  47
  48 boolean
  49 cell_fence_signalled(const struct cell_context *cell,
  50                      const struct cell_fence *fence)
  51 {
  52    uint i;
  53    for (i = 0; i < cell->num_spus; i++) {
  54       if (fence->status[i][0] != CELL_FENCE_SIGNALLED)
  55          return FALSE;
  56       /*assert(fence->status[i][0] == CELL_FENCE_EMITTED);*/
  57    }
  58    return TRUE;
  59 }
  60
  61
  62 void
  63 cell_fence_finish(const struct cell_context *cell,
  64                   const struct cell_fence *fence)
  65 {
  66    while (!cell_fence_signalled(cell, fence)) {
  67       usleep(10);
  68    }
  69
  70 #ifdef DEBUG
  71    {
  72       uint i;
  73       for (i = 0; i < cell->num_spus; i++) {
  74          assert(fence->status[i][0] == CELL_FENCE_SIGNALLED);
  75       }
  76    }
  77 #endif
  78 }
  79
  80
  81
  82
  83 struct cell_buffer_node
  84 {
  85    struct pipe_buffer *buffer;
  86    struct cell_buffer_node *next;
  87 };
  88
  89
  90 static void
  91 cell_add_buffer_to_list(struct cell_context *cell,
  92                         struct cell_buffer_list *list,
  93                         struct pipe_buffer *buffer)
  94 {
  95    struct pipe_screen *ps = cell->pipe.screen;
  96    struct cell_buffer_node *node = CALLOC_STRUCT(cell_buffer_node);
  97    /* create new list node which references the buffer, insert at head */
  98    if (node) {
  99       pipe_buffer_reference(ps, &node->buffer, buffer);
 100       node->next = list->head;
 101       list->head = node;
 102    }
 103 }
 104
 105
 106 /**
 107  * Wait for completion of the given fence, then unreference any buffers
 108  * on the list.
 109  * This typically unrefs/frees texture buffers after any rendering which uses
 110  * them has completed.
 111  */
 112 void
 113 cell_free_fenced_buffers(struct cell_context *cell,
 114                          struct cell_buffer_list *list)
 115 {
 116    if (list->head) {
 117       struct pipe_screen *ps = cell->pipe.screen;
 118       struct cell_buffer_node *node;
 119
 120       cell_fence_finish(cell, &list->fence);
 121
 122       /* traverse the list, unreferencing buffers, freeing nodes */
 123       node = list->head;
 124       while (node) {
 125          struct cell_buffer_node *next = node->next;
 126          assert(node->buffer);
 127          pipe_buffer_unmap(ps, node->buffer);
 128 #if 0
 129          printf("Unref buffer %p\n", node->buffer);
 130          if (node->buffer->refcount == 1)
 131             printf("   Delete!\n");
 132 #endif
 133          pipe_buffer_reference(ps, &node->buffer, NULL);
 134          FREE(node);
 135          node = next;
 136       }
 137       list->head = NULL;
 138    }
 139 }
 140
 141
 142 /**
 143  * This should be called for each render command.
 144  * Any texture buffers that are current bound will be added to a fenced
 145  * list to be freed later when the fence is executed/signalled.
 146  */
 147 void
 148 cell_add_fenced_textures(struct cell_context *cell)
 149 {
 150    struct cell_buffer_list *list = &cell->fenced_buffers[cell->cur_batch];
 151    uint i;
 152
 153    for (i = 0; i < cell->num_textures; i++) {
 154       struct cell_texture *ct = cell->texture[i];
 155       if (ct) {
 156          uint level;
 157          for (level = 0; level < CELL_MAX_TEXTURE_LEVELS; level++) {
 158             if (ct->tiled_buffer[level]) {
 159 #if 0
 160                printf("Adding texture %p buffer %p to list\n",
 161                       ct, ct->tiled_buffer[level]);
 162 #endif
 163                cell_add_buffer_to_list(cell, list, ct->tiled_buffer[level]);
 164             }
 165          }
 166       }
 167    }
 168 }