src/gallium/drivers/vc4/vc4_bufmgr.h

   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 #ifdef USE_VC4_SIMULATOR
  43         void *simulator_winsys_map;
  44         uint32_t simulator_winsys_stride;
  45 #endif
  46
  47         /** Entry in the linked list of buffers freed, by age. */
  48         struct list_head time_list;
  49         /** Entry in the per-page-count linked list of buffers freed (by age). */
  50         struct list_head size_list;
  51         /** Approximate second when the bo was freed. */
  52         time_t free_time;
  53         /**
  54          * Whether only our process has a reference to the BO (meaning that
  55          * it's safe to reuse it in the BO cache).
  56          */
  57         bool private;
  58 };
  59
  60 struct vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
  61                             const char *name);
  62 struct vc4_bo *vc4_bo_alloc_shader(struct vc4_screen *screen, const void *data,
  63                                    uint32_t size);
  64 void vc4_bo_last_unreference(struct vc4_bo *bo);
  65 void vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time);
  66 struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
  67                                 uint32_t winsys_stride);
  68 struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
  69                                   uint32_t winsys_stride);
  70 bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
  71 int vc4_bo_get_dmabuf(struct vc4_bo *bo);
  72
  73 static inline void
  74 vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
  75 {
  76         if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
  77                 vc4_bo_last_unreference(*old_bo);
  78         *old_bo = new_bo;
  79 }
  80
  81 static inline struct vc4_bo *
  82 vc4_bo_reference(struct vc4_bo *bo)
  83 {
  84         pipe_reference(NULL, &bo->reference);
  85         return bo;
  86 }
  87
  88 static inline void
  89 vc4_bo_unreference(struct vc4_bo **bo)
  90 {
  91         struct vc4_screen *screen;
  92         if (!*bo)
  93                 return;
  94
  95         if ((*bo)->private) {
  96                 /* Avoid the mutex for private BOs */
  97                 if (pipe_reference(&(*bo)->reference, NULL))
  98                         vc4_bo_last_unreference(*bo);
  99         } else {
 100                 screen = (*bo)->screen;
 101                 pipe_mutex_lock(screen->bo_handles_mutex);
 102
 103                 if (pipe_reference(&(*bo)->reference, NULL)) {
 104                         util_hash_table_remove(screen->bo_handles,
 105                                                (void *)(uintptr_t)(*bo)->handle);
 106                         vc4_bo_last_unreference(*bo);
 107                 }
 108
 109                 pipe_mutex_unlock(screen->bo_handles_mutex);
 110         }
 111
 112         *bo = NULL;
 113 }
 114
 115 static inline void
 116 vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
 117 {
 118         if (!*bo)
 119                 return;
 120
 121         if (pipe_reference(&(*bo)->reference, NULL))
 122                 vc4_bo_last_unreference_locked_timed(*bo, time);
 123         *bo = NULL;
 124 }
 125
 126 void *
 127 vc4_bo_map(struct vc4_bo *bo);
 128
 129 void *
 130 vc4_bo_map_unsynchronized(struct vc4_bo *bo);
 131
 132 bool
 133 vc4_bo_wait(struct vc4_bo *bo, uint64_t timeout_ns, const char *reason);
 134
 135 bool
 136 vc4_wait_seqno(struct vc4_screen *screen, uint64_t seqno, uint64_t timeout_ns,
 137                const char *reason);
 138
 139 void
 140 vc4_bufmgr_destroy(struct pipe_screen *pscreen);
 141
 142 #endif /* VC4_BUFMGR_H */
 143