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 V3D_BUFMGR_H
25 #define V3D_BUFMGR_H
26
27 #include <stdint.h>
28 #include "util/u_hash_table.h"
29 #include "util/u_inlines.h"
30 #include "util/list.h"
31 #include "v3d_screen.h"
32
33 struct v3d_context;
34
35 struct v3d_bo {
36 struct pipe_reference reference;
37 struct v3d_screen *screen;
38 void *map;
39 const char *name;
40 uint32_t handle;
41 uint32_t size;
42
43 /* Address of the BO in our page tables. */
44 uint32_t offset;
45
46 /** Entry in the linked list of buffers freed, by age. */
47 struct list_head time_list;
48 /** Entry in the per-page-count linked list of buffers freed (by age). */
49 struct list_head size_list;
50 /** Approximate second when the bo was freed. */
51 time_t free_time;
52 /**
53 * Whether only our process has a reference to the BO (meaning that
54 * it's safe to reuse it in the BO cache).
55 */
56 bool private;
57 };
58
59 struct v3d_bo *v3d_bo_alloc(struct v3d_screen *screen, uint32_t size,
60 const char *name);
61 void v3d_bo_last_unreference(struct v3d_bo *bo);
62 void v3d_bo_last_unreference_locked_timed(struct v3d_bo *bo, time_t time);
63 struct v3d_bo *v3d_bo_open_name(struct v3d_screen *screen, uint32_t name);
64 struct v3d_bo *v3d_bo_open_dmabuf(struct v3d_screen *screen, int fd);
65 bool v3d_bo_flink(struct v3d_bo *bo, uint32_t *name);
66 int v3d_bo_get_dmabuf(struct v3d_bo *bo);
67
68 static inline void
v3d_bo_set_reference(struct v3d_bo ** old_bo,struct v3d_bo * new_bo)69 v3d_bo_set_reference(struct v3d_bo **old_bo, struct v3d_bo *new_bo)
70 {
71 if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
72 v3d_bo_last_unreference(*old_bo);
73 *old_bo = new_bo;
74 }
75
76 static inline struct v3d_bo *
v3d_bo_reference(struct v3d_bo * bo)77 v3d_bo_reference(struct v3d_bo *bo)
78 {
79 pipe_reference(NULL, &bo->reference);
80 return bo;
81 }
82
83 static inline void
v3d_bo_unreference(struct v3d_bo ** bo)84 v3d_bo_unreference(struct v3d_bo **bo)
85 {
86 struct v3d_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 v3d_bo_last_unreference(*bo);
94 } else {
95 screen = (*bo)->screen;
96 mtx_lock(&screen->bo_handles_mutex);
97
98 if (pipe_reference(&(*bo)->reference, NULL)) {
99 _mesa_hash_table_remove_key(screen->bo_handles,
100 (void *)(uintptr_t)(*bo)->handle);
101 v3d_bo_last_unreference(*bo);
102 }
103
104 mtx_unlock(&screen->bo_handles_mutex);
105 }
106
107 *bo = NULL;
108 }
109
110 static inline void
v3d_bo_unreference_locked_timed(struct v3d_bo ** bo,time_t time)111 v3d_bo_unreference_locked_timed(struct v3d_bo **bo, time_t time)
112 {
113 if (!*bo)
114 return;
115
116 if (pipe_reference(&(*bo)->reference, NULL))
117 v3d_bo_last_unreference_locked_timed(*bo, time);
118 *bo = NULL;
119 }
120
121 void *
122 v3d_bo_map(struct v3d_bo *bo);
123
124 void *
125 v3d_bo_map_unsynchronized(struct v3d_bo *bo);
126
127 bool
128 v3d_bo_wait(struct v3d_bo *bo, uint64_t timeout_ns, const char *reason);
129
130 bool
131 v3d_wait_seqno(struct v3d_screen *screen, uint64_t seqno, uint64_t timeout_ns,
132 const char *reason);
133
134 void
135 v3d_bufmgr_destroy(struct pipe_screen *pscreen);
136
137 #endif /* V3D_BUFMGR_H */
138
139