2 * © Copyright 2019 Alyssa Rosenzweig
3 * © Copyright 2019 Collabora, Ltd.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
13 * paragraph) shall be included in all copies or substantial portions of the
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29 #include <panfrost-misc.h>
30 #include "util/list.h"
31 #include "pan_device.h"
34 /* Flags for allocated memory */
36 /* This memory region is executable */
37 #define PAN_BO_EXECUTE (1 << 0)
39 /* This memory region should be lazily allocated and grow-on-page-fault. Must
40 * be used in conjunction with INVISIBLE */
41 #define PAN_BO_GROWABLE (1 << 1)
43 /* This memory region should not be mapped to the CPU */
44 #define PAN_BO_INVISIBLE (1 << 2)
46 /* This region may not be used immediately and will not mmap on allocate
47 * (semantically distinct from INVISIBLE, which cannot never be mmaped) */
48 #define PAN_BO_DELAY_MMAP (1 << 3)
50 /* BO is shared across processes (imported or exported) and therefore cannot be
52 #define PAN_BO_SHARED (1 << 4)
54 /* GPU access flags */
56 /* BO is either shared (can be accessed by more than one GPU batch) or private
57 * (reserved by a specific GPU job). */
58 #define PAN_BO_ACCESS_PRIVATE (0 << 0)
59 #define PAN_BO_ACCESS_SHARED (1 << 0)
61 /* BO is being read/written by the GPU */
62 #define PAN_BO_ACCESS_READ (1 << 1)
63 #define PAN_BO_ACCESS_WRITE (1 << 2)
64 #define PAN_BO_ACCESS_RW (PAN_BO_ACCESS_READ | PAN_BO_ACCESS_WRITE)
66 /* BO is accessed by the vertex/tiler job. */
67 #define PAN_BO_ACCESS_VERTEX_TILER (1 << 3)
69 /* BO is accessed by the fragment job. */
70 #define PAN_BO_ACCESS_FRAGMENT (1 << 4)
73 /* Must be first for casting */
74 struct list_head bucket_link
;
76 /* Used to link the BO to the BO cache LRU list. */
77 struct list_head lru_link
;
79 /* Store the time this BO was use last, so the BO cache logic can evict
84 /* Atomic reference count */
87 struct panfrost_device
*dev
;
89 /* Mapping for the entire object (all levels) */
92 /* GPU address for the object */
95 /* Size of all entire trees */
102 /* Combination of PAN_BO_ACCESS_{READ,WRITE} flags encoding pending
103 * GPU accesses to this BO. Useful to avoid calling the WAIT_BO ioctl
104 * when the BO is idle.
110 panfrost_bo_wait(struct panfrost_bo
*bo
, int64_t timeout_ns
, bool wait_readers
);
112 panfrost_bo_reference(struct panfrost_bo
*bo
);
114 panfrost_bo_unreference(struct panfrost_bo
*bo
);
116 panfrost_bo_create(struct panfrost_device
*dev
, size_t size
,
119 panfrost_bo_mmap(struct panfrost_bo
*bo
);
121 panfrost_bo_import(struct panfrost_device
*dev
, int fd
);
123 panfrost_bo_export(struct panfrost_bo
*bo
);
125 panfrost_bo_cache_evict_all(struct panfrost_device
*dev
);
127 #endif /* __PAN_BO_H__ */