1 /*
2 * Copyright © 2014 Broadcom
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
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 * IN THE SOFTWARE.
22 */
23
24 #ifndef VC4_BUFMGR_H
25 #define VC4_BUFMGR_H
26
27 #include <stdint.h>
28 #include "util/u_hash_table.h"
29 #include "util/u_inlines.h"
30 #include "vc4_qir.h"
31
32 struct vc4_context;
33
34 struct vc4_bo {
35 struct pipe_reference reference;
36 struct vc4_screen *screen;
37 void *map;
38 const char *name;
39 uint32_t handle;
40 uint32_t size;
41
42 /** Entry in the linked list of buffers freed, by age. */
43 struct list_head time_list;
44 /** Entry in the per-page-count linked list of buffers freed (by age). */
45 struct list_head size_list;
46 /** Approximate second when the bo was freed. */
47 time_t free_time;
48 /**
49 * Whether only our process has a reference to the BO (meaning that
50 * it's safe to reuse it in the BO cache).
51 */
52 bool private;
53 };
54
55 struct vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
56 const char *name);
57 struct vc4_bo *vc4_bo_alloc_shader(struct vc4_screen *screen, const void *data,
58 uint32_t size);
59 void vc4_bo_last_unreference(struct vc4_bo *bo);
60 void vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time);
61 struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
62 uint32_t winsys_stride);
63 struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
64 uint32_t winsys_stride);
65 bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
66 int vc4_bo_get_dmabuf(struct vc4_bo *bo);
67
68 static inline void
vc4_bo_set_reference(struct vc4_bo ** old_bo,struct vc4_bo * new_bo)69 vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
70 {
71 if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
72 vc4_bo_last_unreference(*old_bo);
73 *old_bo = new_bo;
74 }
75
76 static inline struct vc4_bo *
vc4_bo_reference(struct vc4_bo * bo)77 vc4_bo_reference(struct vc4_bo *bo)
78 {
79 pipe_reference(NULL, &bo->reference);
80 return bo;
81 }
82
83 static inline void
vc4_bo_unreference(struct vc4_bo ** bo)84 vc4_bo_unreference(struct vc4_bo **bo)
85 {
86 struct vc4_screen *screen;
87 if (!*bo)
88 return;
89
90 if ((*bo)->private) {
91 /* Avoid the mutex for private BOs */
92 if (pipe_reference(&(*bo)->reference, NULL))
93 vc4_bo_last_unreference(*bo);
94 } else {
95 screen = (*bo)->screen;
96 pipe_mutex_lock(screen->bo_handles_mutex);
97
98 if (pipe_reference(&(*bo)->reference, NULL)) {
99 util_hash_table_remove(screen->bo_handles,
100 (void *)(uintptr_t)(*bo)->handle);
101 vc4_bo_last_unreference(*bo);
102 }
103
104 pipe_mutex_unlock(screen->bo_handles_mutex);
105 }
106
107 *bo = NULL;
108 }
109
110 static inline void
vc4_bo_unreference_locked_timed(struct vc4_bo ** bo,time_t time)111 vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
112 {
113 if (!*bo)
114 return;
115
116 if (pipe_reference(&(*bo)->reference, NULL))
117 vc4_bo_last_unreference_locked_timed(*bo, time);
118 *bo = NULL;
119 }
120
121 void *
122 vc4_bo_map(struct vc4_bo *bo);
123
124 void *
125 vc4_bo_map_unsynchronized(struct vc4_bo *bo);
126
127 bool
128 vc4_bo_wait(struct vc4_bo *bo, uint64_t timeout_ns, const char *reason);
129
130 bool
131 vc4_wait_seqno(struct vc4_screen *screen, uint64_t seqno, uint64_t timeout_ns,
132 const char *reason);
133
134 void
135 vc4_bufmgr_destroy(struct pipe_screen *pscreen);
136
137 #endif /* VC4_BUFMGR_H */
138
139