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 #ifndef VIRGL_TRANSFER_QUEUE_H
  25 #define VIRGL_TRANSFER_QUEUE_H
  26
  27 #include "pipe/p_defines.h"
  28 #include "util/list.h"
  29
  30 struct virgl_cmd_buf;
  31 struct virgl_screen;
  32 struct virgl_slab_child_pool;
  33 struct virgl_transfer;
  34
  35 enum virgl_transfer_queue_lists {
  36    PENDING_LIST = 0,
  37    COMPLETED_LIST = 1,
  38    MAX_LISTS = 2,
  39 };
  40
  41 struct virgl_transfer_queue {
  42    struct list_head lists[MAX_LISTS];
  43    struct virgl_screen *vs;
  44    struct slab_child_pool *pool;
  45    struct virgl_cmd_buf *tbuf;
  46    uint32_t num_dwords;
  47 };
  48
  49 void virgl_transfer_queue_init(struct virgl_transfer_queue *queue,
  50                                struct virgl_screen *vs,
  51                                struct slab_child_pool *pool);
  52
  53 void virgl_transfer_queue_fini(struct virgl_transfer_queue *queue);
  54
  55 int virgl_transfer_queue_unmap(struct virgl_transfer_queue *queue,
  56                                struct virgl_transfer *transfer);
  57
  58 int virgl_transfer_queue_clear(struct virgl_transfer_queue *queue,
  59                                struct virgl_cmd_buf *buf);
  60
  61 bool virgl_transfer_queue_is_queued(struct virgl_transfer_queue *queue,
  62                                     struct virgl_transfer *transfer);
  63
  64 /*
  65  * Search the transfer queue for a transfer suitable for extension and
  66  * extend it to include the new transfer.
  67  */
  68 struct virgl_transfer * virgl_transfer_queue_extend(
  69    struct virgl_transfer_queue *queue, struct virgl_transfer *transfer);
  70
  71 #endif /* VIRGL_TRANSFER_QUEUE_H */