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_inlines.h"
  29 #include "vc4_qir.h"
  30
  31 struct vc4_context;
  32
  33 struct vc4_bo {
  34         struct pipe_reference reference;
  35         struct vc4_screen *screen;
  36         void *map;
  37         const char *name;
  38         uint32_t handle;
  39         uint32_t size;
  40
  41 #ifdef USE_VC4_SIMULATOR
  42         void *simulator_winsys_map;
  43         uint32_t simulator_winsys_stride;
  44 #endif
  45
  46         /** Entry in the linked list of buffers freed, by age. */
  47         struct simple_node time_list;
  48         /** Entry in the per-page-count linked list of buffers freed (by age). */
  49         struct simple_node 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 vc4_bo *vc4_bo_alloc(struct vc4_screen *screen, uint32_t size,
  60                             const char *name);
  61 struct vc4_bo *vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data,
  62                                 uint32_t size, const char *name);
  63 void vc4_bo_last_unreference(struct vc4_bo *bo);
  64 void vc4_bo_last_unreference_locked_timed(struct vc4_bo *bo, time_t time);
  65 struct vc4_bo *vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
  66                                 uint32_t winsys_stride);
  67 struct vc4_bo *vc4_bo_open_dmabuf(struct vc4_screen *screen, int fd,
  68                                   uint32_t winsys_stride);
  69 bool vc4_bo_flink(struct vc4_bo *bo, uint32_t *name);
  70 int vc4_bo_get_dmabuf(struct vc4_bo *bo);
  71
  72 static inline void
  73 vc4_bo_set_reference(struct vc4_bo **old_bo, struct vc4_bo *new_bo)
  74 {
  75         if (pipe_reference(&(*old_bo)->reference, &new_bo->reference))
  76                 vc4_bo_last_unreference(*old_bo);
  77         *old_bo = new_bo;
  78 }
  79
  80 static inline struct vc4_bo *
  81 vc4_bo_reference(struct vc4_bo *bo)
  82 {
  83         pipe_reference(NULL, &bo->reference);
  84         return bo;
  85 }
  86
  87 static inline void
  88 vc4_bo_unreference(struct vc4_bo **bo)
  89 {
  90         if (!*bo)
  91                 return;
  92
  93         if (pipe_reference(&(*bo)->reference, NULL))
  94                 vc4_bo_last_unreference(*bo);
  95         *bo = NULL;
  96 }
  97
  98 static inline void
  99 vc4_bo_unreference_locked_timed(struct vc4_bo **bo, time_t time)
 100 {
 101         if (!*bo)
 102                 return;
 103
 104         if (pipe_reference(&(*bo)->reference, NULL))
 105                 vc4_bo_last_unreference_locked_timed(*bo, time);
 106         *bo = NULL;
 107 }
 108
 109 void *
 110 vc4_bo_map(struct vc4_bo *bo);
 111
 112 void *
 113 vc4_bo_map_unsynchronized(struct vc4_bo *bo);
 114
 115 bool
 116 vc4_bo_wait(struct vc4_bo *bo, uint64_t timeout_ns);
 117
 118 bool
 119 vc4_wait_seqno(struct vc4_screen *screen, uint64_t seqno, uint64_t timeout_ns);
 120
 121 void
 122 vc4_bufmgr_destroy(struct pipe_screen *pscreen);
 123
 124 #endif /* VC4_BUFMGR_H */
 125