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      1 /*
      2  *  Copyright 2017-2018 Alyssa Rosenzweig
      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 FROM,
     20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     21  * SOFTWARE.
     22  *
     23  */
     24 
     25 #ifndef __PANVK_POOL_H__
     26 #define __PANVK_POOL_H__
     27 
     28 #include "pan_pool.h"
     29 
     30 struct panvk_bo_pool {
     31    struct util_dynarray free_bos;
     32 };
     33 
     34 static inline void panvk_bo_pool_init(struct panvk_bo_pool *bo_pool)
     35 {
     36    util_dynarray_init(&bo_pool->free_bos, NULL);
     37 }
     38 
     39 static inline void panvk_bo_pool_cleanup(struct panvk_bo_pool *bo_pool)
     40 {
     41    util_dynarray_foreach(&bo_pool->free_bos, struct panfrost_bo *, bo)
     42       panfrost_bo_unreference(*bo);
     43    util_dynarray_fini(&bo_pool->free_bos);
     44 }
     45 
     46 /* Represents grow-only memory. It may be owned by the batch (OpenGL), or may
     47    be unowned for persistent uploads. */
     48 
     49 struct panvk_pool {
     50    /* Inherit from pan_pool */
     51    struct pan_pool base;
     52 
     53    /* Before allocating a new BO, check if the BO pool has free BOs.
     54     * When returning BOs, if bo_pool != NULL, return them to this bo_pool.
     55     */
     56    struct panvk_bo_pool *bo_pool;
     57 
     58    /* BOs allocated by this pool */
     59    struct util_dynarray bos;
     60    struct util_dynarray big_bos;
     61 
     62    /* Current transient BO */
     63    struct panfrost_bo *transient_bo;
     64 
     65    /* Within the topmost transient BO, how much has been used? */
     66    unsigned transient_offset;
     67 };
     68 
     69 static inline struct panvk_pool *
     70 to_panvk_pool(struct pan_pool *pool)
     71 {
     72    return container_of(pool, struct panvk_pool, base);
     73 }
     74 
     75 void
     76 panvk_pool_init(struct panvk_pool *pool, struct panfrost_device *dev,
     77                 struct panvk_bo_pool *bo_pool, unsigned create_flags,
     78                 size_t slab_size, const char *label, bool prealloc);
     79 
     80 void
     81 panvk_pool_reset(struct panvk_pool *pool);
     82 
     83 void
     84 panvk_pool_cleanup(struct panvk_pool *pool);
     85 
     86 static inline unsigned
     87 panvk_pool_num_bos(struct panvk_pool *pool)
     88 {
     89    return util_dynarray_num_elements(&pool->bos, struct panfrost_bo *);
     90 }
     91 
     92 void
     93 panvk_pool_get_bo_handles(struct panvk_pool *pool, uint32_t *handles);
     94 
     95 #endif
     96