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
26enum virgl_transfer_queue_lists {
27   PENDING_LIST = 0,
28   COMPLETED_LIST = 1,
29   MAX_LISTS = 2,
30};
31
32struct 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
40void virgl_transfer_queue_init(struct virgl_transfer_queue *queue,
41                               struct virgl_screen *vs,
42                               struct slab_child_pool *pool);
43
44void virgl_transfer_queue_fini(struct virgl_transfer_queue *queue);
45
46int virgl_transfer_queue_unmap(struct virgl_transfer_queue *queue,
47                               struct virgl_transfer *transfer);
48
49int virgl_transfer_queue_clear(struct virgl_transfer_queue *queue,
50                               struct virgl_cmd_buf *buf);
51
52bool 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 */
59struct virgl_transfer * virgl_transfer_queue_extend(
60   struct virgl_transfer_queue *queue, struct virgl_transfer *transfer);
61