aboutsummaryrefslogtreecommitdiffstats
path: root/src/gallium/drivers/vc4/vc4_bufmgr.h
blob: bcabfd2b9710aa333fde5f8bc17d6fb6e1c096b2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * Copyright © 2014 Broadcom
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */

#ifndef VC4_BUFMGR_H
#define VC4_BUFMGR_H

#include <stdint.h>
#include "util/u_hash_table.h"
#include "util/u_inlines.h"
#include "vc4_qir.h"

struct vc4_context;

struct vc4_bo {
        struct pipe_reference reference;
        struct vc4_screen *screen;
        void *map;
        const char *name;
        uint32_t handle;
        uint32_t size;

        /** Entry in the linked list of buffers freed, by age. */
        struct list_head time_list;
        /** Entry in the per-page-count linked list of buffers freed (by age). */
        struct list_head size_list;
        /** Approximate second when the bo was freed. */
        time_t free_time;
        /**
         * Whether only our process has a reference to the BO (meaning that
         * it's safe to reuse it in the BO cache).
         */
        bool private;
};

struct vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
                            const char *name);
struct vc4_bo *vc4_bo_alloc_shader(struct vc4_screen *screen, const void *data,
                                   uint32_t size);
void vc4_bo_last_unreference(struct vc4_bo *bo);
void vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time);
struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
                                uint32_t winsys_stride);
struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
                                  uint32_t winsys_stride);
bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
int vc4_bo_get_dmabuf(struct vc4_bo *bo);

static inline void
vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
{
        if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
                vc4_bo_last_unreference(*old_bo);
        *old_bo = new_bo;
}

static inline struct vc4_bo *
vc4_bo_reference(struct vc4_bo *bo)
{
        pipe_reference(NULL, &bo->reference);
        return bo;
}

static inline void
vc4_bo_unreference(struct vc4_bo **bo)
{
        struct vc4_screen *screen;
        if (!*bo)
                return;

        if ((*bo)->private) {
                /* Avoid the mutex for private BOs */
                if (pipe_reference(&(*bo)->reference, NULL))
                        vc4_bo_last_unreference(*bo);
        } else {
                screen = (*bo)->screen;
                pipe_mutex_lock(screen->bo_handles_mutex);

                if (pipe_reference(&(*bo)->reference, NULL)) {
                        util_hash_table_remove(screen->bo_handles,
                                               (void *)(uintptr_t)(*bo)->handle);
                        vc4_bo_last_unreference(*bo);
                }

                pipe_mutex_unlock(screen->bo_handles_mutex);
        }

        *bo = NULL;
}

static inline void
vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
{
        if (!*bo)
                return;

        if (pipe_reference(&(*bo)->reference, NULL))
                vc4_bo_last_unreference_locked_timed(*bo, time);
        *bo = NULL;
}

void *
vc4_bo_map(struct vc4_bo *bo);

void *
vc4_bo_map_unsynchronized(struct vc4_bo *bo);

bool
vc4_bo_wait(struct vc4_bo *bo, uint64_t timeout_ns, const char *reason);

bool
vc4_wait_seqno(struct vc4_screen *screen, uint64_t seqno, uint64_t timeout_ns,
               const char *reason);

void
vc4_bufmgr_destroy(struct pipe_screen *pscreen);

#endif /* VC4_BUFMGR_H */