Home | History | Annotate | Download | only in vc4 
      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
     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 *
     77 vc4_bo_reference(struct vc4_bo *bo)
     78 {
     79         pipe_reference(NULL, &bo->reference);
     80         return bo;
     81 }
     82 
     83 static inline void
     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
    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