1 /*
2 * Copyright © 2022 Collabora Ltd. and Red Hat Inc.
3 * SPDX-License-Identifier: MIT
4 */
5 #ifndef NVK_DESCRIPTOR_TABLE_H
6 #define NVK_DESCRIPTOR_TABLE_H 1
7
8 #include "nvk_private.h"
9
10 #include "nouveau_bo.h"
11 #include "util/simple_mtx.h"
12
13 struct nvk_device;
14
15 struct nvk_descriptor_table {
16 simple_mtx_t mutex;
17
18 uint32_t desc_size; /**< Size of a descriptor */
19 uint32_t alloc; /**< Number of descriptors allocated */
20 uint32_t max_alloc; /**< Maximum possible number of descriptors */
21 uint32_t next_desc; /**< Next unallocated descriptor */
22 uint32_t free_count; /**< Size of free_table */
23
24 struct nouveau_ws_bo *bo;
25 void *map;
26
27 /* Stack for free descriptor elements */
28 uint32_t *free_table;
29 };
30
31 VkResult nvk_descriptor_table_init(struct nvk_device *dev,
32 struct nvk_descriptor_table *table,
33 uint32_t descriptor_size,
34 uint32_t min_descriptor_count,
35 uint32_t max_descriptor_count);
36
37 void nvk_descriptor_table_finish(struct nvk_device *dev,
38 struct nvk_descriptor_table *table);
39
40 VkResult nvk_descriptor_table_add(struct nvk_device *dev,
41 struct nvk_descriptor_table *table,
42 const void *desc_data, size_t desc_size,
43 uint32_t *index_out);
44
45 void nvk_descriptor_table_remove(struct nvk_device *dev,
46 struct nvk_descriptor_table *table,
47 uint32_t index);
48
49 static inline struct nouveau_ws_bo *
nvk_descriptor_table_get_bo_ref(struct nvk_descriptor_table * table,uint32_t * alloc_count_out)50 nvk_descriptor_table_get_bo_ref(struct nvk_descriptor_table *table,
51 uint32_t *alloc_count_out)
52 {
53 simple_mtx_lock(&table->mutex);
54 struct nouveau_ws_bo *bo = table->bo;
55 if (bo)
56 nouveau_ws_bo_ref(bo);
57 *alloc_count_out = table->alloc;
58 simple_mtx_unlock(&table->mutex);
59
60 return bo;
61 }
62
63 #endif
64