1 /*
2 * © Copyright 2017-2018 Alyssa Rosenzweig
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 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 */
24
25 #ifndef __PAN_MEMPOOL_H__
26 #define __PAN_MEMPOOL_H__
27
28 #include "pan_pool.h"
29
30 /* Represents grow-only memory. It may be owned by the batch (OpenGL), or may
31 be unowned for persistent uploads. */
32
33 struct panfrost_pool {
34 /* Inherit from pan_pool */
35 struct pan_pool base;
36
37 /* BOs allocated by this pool */
38 struct util_dynarray bos;
39
40 /* Current transient BO */
41 struct panfrost_bo *transient_bo;
42
43 /* Within the topmost transient BO, how much has been used? */
44 unsigned transient_offset;
45
46 /* Mode of the pool. BO management is in the pool for owned mode, but
47 * the consumed for unowned mode. */
48 bool owned;
49 };
50
51 static inline struct panfrost_pool *
to_panfrost_pool(struct pan_pool * pool)52 to_panfrost_pool(struct pan_pool *pool)
53 {
54 return container_of(pool, struct panfrost_pool, base);
55 }
56
57 /* Reference to pool allocated memory for an unowned pool */
58
59 struct panfrost_pool_ref {
60 /* Owning BO */
61 struct panfrost_bo *bo;
62
63 /* Mapped GPU VA */
64 mali_ptr gpu;
65 };
66
67 /* Take a reference to an allocation pool. Call directly after allocating from
68 * an unowned pool for correct operation. */
69
70 static inline struct panfrost_pool_ref
panfrost_pool_take_ref(struct panfrost_pool * pool,mali_ptr ptr)71 panfrost_pool_take_ref(struct panfrost_pool *pool, mali_ptr ptr)
72 {
73 if (!pool->owned)
74 panfrost_bo_reference(pool->transient_bo);
75
76 return (struct panfrost_pool_ref) {
77 .bo = pool->transient_bo,
78 .gpu = ptr
79 };
80 }
81
82 void
83 panfrost_pool_init(struct panfrost_pool *pool, void *memctx,
84 struct panfrost_device *dev, unsigned create_flags,
85 size_t slab_size, const char *label, bool prealloc, bool
86 owned);
87
88 void
89 panfrost_pool_cleanup(struct panfrost_pool *pool);
90
91 static inline unsigned
panfrost_pool_num_bos(struct panfrost_pool * pool)92 panfrost_pool_num_bos(struct panfrost_pool *pool)
93 {
94 assert(pool->owned && "pool does not track BOs in unowned mode");
95 return util_dynarray_num_elements(&pool->bos, struct panfrost_bo *);
96 }
97
98 void
99 panfrost_pool_get_bo_handles(struct panfrost_pool *pool, uint32_t *handles);
100
101 #endif
102