src/gallium/drivers/virgl/virgl_transfer_queue.h

   1 /*
   2  * Copyright 2018 Chromium.
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "virgl_resource.h"
  25
  26 enum virgl_transfer_queue_lists {
  27    PENDING_LIST = 0,
  28    COMPLETED_LIST = 1,
  29    MAX_LISTS = 2,
  30 };
  31
  32 struct virgl_transfer_queue {
  33    struct list_head lists[MAX_LISTS];
  34    struct virgl_screen *vs;
  35    struct slab_child_pool *pool;
  36    struct virgl_cmd_buf *tbuf;
  37    uint32_t num_dwords;
  38 };
  39
  40 void virgl_transfer_queue_init(struct virgl_transfer_queue *queue,
  41                                struct virgl_screen *vs,
  42                                struct slab_child_pool *pool);
  43
  44 void virgl_transfer_queue_fini(struct virgl_transfer_queue *queue);
  45
  46 int virgl_transfer_queue_unmap(struct virgl_transfer_queue *queue,
  47                                struct virgl_transfer *transfer);
  48
  49 int virgl_transfer_queue_clear(struct virgl_transfer_queue *queue,
  50                                struct virgl_cmd_buf *buf);
  51
  52 bool virgl_transfer_queue_is_queued(struct virgl_transfer_queue *queue,
  53                                     struct virgl_transfer *transfer);
  54
  55 /*
  56  * Search the transfer queue for a transfer suitable for extension and
  57  * extend it to include the new transfer.
  58  */
  59 struct virgl_transfer * virgl_transfer_queue_extend(
  60    struct virgl_transfer_queue *queue, struct virgl_transfer *transfer);