2 * © Copyright 2017-2018 Alyssa Rosenzweig
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:
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
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
25 #ifndef __PAN_POOL_H__
26 #define __PAN_POOL_H__
29 #include <midgard_pack.h>
31 /* Represents a pool of memory that can only grow, used to allocate objects
32 * with the same lifetime as the pool itself. In OpenGL, a pool is owned by the
33 * batch for transient structures. In Vulkan, it may be owned by e.g. the
37 /* Parent device for allocation */
38 struct panfrost_device
*dev
;
40 /* panfrost_bo -> access_flags owned by the pool */
41 struct hash_table
*bos
;
43 /* Current transient BO */
44 struct panfrost_bo
*transient_bo
;
46 /* Within the topmost transient BO, how much has been used? */
47 unsigned transient_offset
;
49 /* BO flags to use in the pool */
50 unsigned create_flags
;
54 panfrost_pool_init(struct pan_pool
*pool
, void *memctx
,
55 struct panfrost_device
*dev
, unsigned create_flags
,
59 panfrost_pool_cleanup(struct pan_pool
*pool
);
61 static inline unsigned
62 panfrost_pool_num_bos(struct pan_pool
*pool
)
64 return pool
->bos
->entries
;
68 panfrost_pool_get_bo_handles(struct pan_pool
*pool
, uint32_t *handles
);
70 /* Represents a fat pointer for GPU-mapped memory, returned from the transient
71 * allocator and not used for much else */
73 struct panfrost_transfer
{
78 struct panfrost_transfer
79 panfrost_pool_alloc_aligned(struct pan_pool
*pool
, size_t sz
, unsigned alignment
);
81 /* Default to self-alignment */
83 static inline struct panfrost_transfer
84 panfrost_pool_alloc(struct pan_pool
*pool
, size_t sz
)
86 assert(sz
== util_next_power_of_two(sz
));
87 return panfrost_pool_alloc_aligned(pool
, sz
, sz
);
90 struct panfrost_transfer
91 panfrost_pool_alloc(struct pan_pool
*pool
, size_t sz
);
94 panfrost_pool_upload(struct pan_pool
*pool
, const void *data
, size_t sz
);
97 panfrost_pool_upload_aligned(struct pan_pool
*pool
, const void *data
, size_t sz
, unsigned alignment
);