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      1 /*
      2  * Copyright  2019 Raspberry Pi
      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 V3DV_BO_H
     25 #define V3DV_BO_H
     26 
     27 struct v3dv_device;
     28 
     29 struct v3dv_bo {
     30    struct list_head list_link;
     31 
     32    uint32_t handle;
     33    uint64_t handle_bit;
     34    uint32_t size;
     35    uint32_t offset;
     36 
     37    uint32_t map_size;
     38    void *map;
     39 
     40    const char *name;
     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    /**
     50     * Whether only our process has a reference to the BO (meaning that
     51     * it's safe to reuse it in the BO cache).
     52     */
     53    bool private;
     54 
     55    /**
     56     * If this BO was allocated for a swapchain on the display device, the
     57     * handle of the dumb BO on that device.
     58     */
     59    int32_t dumb_handle;
     60 };
     61 
     62 void v3dv_bo_init(struct v3dv_bo *bo, uint32_t handle, uint32_t size, uint32_t offset, const char *name, bool private);
     63 
     64 struct v3dv_bo *v3dv_bo_alloc(struct v3dv_device *device, uint32_t size, const char *name, bool private);
     65 
     66 bool v3dv_bo_free(struct v3dv_device *device, struct v3dv_bo *bo);
     67 
     68 bool v3dv_bo_wait(struct v3dv_device *device, struct v3dv_bo *bo, uint64_t timeout_ns);
     69 
     70 bool v3dv_bo_map_unsynchronized(struct v3dv_device *device, struct v3dv_bo *bo, uint32_t size);
     71 
     72 bool v3dv_bo_map(struct v3dv_device *device, struct v3dv_bo *bo, uint32_t size);
     73 
     74 void v3dv_bo_unmap(struct v3dv_device *device, struct v3dv_bo *bo);
     75 
     76 void v3dv_bo_cache_init(struct v3dv_device *device);
     77 void v3dv_bo_cache_destroy(struct v3dv_device *device);
     78 
     79 #endif /* V3DV_BO_H */
     80