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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 __PAN_MEMPOOL_H__
     26 #define __PAN_MEMPOOL_H__
     27 
     28 #include "pan_pool.h"
     29 
     30 /* Represents grow-only memory. It may be owned by the batch (OpenGL), or may
     31    be unowned for persistent uploads. */
     32 
     33 struct panfrost_pool {
     34         /* Inherit from pan_pool */
     35         struct pan_pool base;
     36 
     37         /* BOs allocated by this pool */
     38         struct util_dynarray bos;
     39 
     40         /* Current transient BO */
     41         struct panfrost_bo *transient_bo;
     42 
     43         /* Within the topmost transient BO, how much has been used? */
     44         unsigned transient_offset;
     45 
     46         /* Mode of the pool. BO management is in the pool for owned mode, but
     47          * the consumed for unowned mode. */
     48         bool owned;
     49 };
     50 
     51 static inline struct panfrost_pool *
     52 to_panfrost_pool(struct pan_pool *pool)
     53 {
     54         return container_of(pool, struct panfrost_pool, base);
     55 }
     56 
     57 /* Reference to pool allocated memory for an unowned pool */
     58 
     59 struct panfrost_pool_ref {
     60         /* Owning BO */
     61         struct panfrost_bo *bo;
     62 
     63         /* Mapped GPU VA */
     64         mali_ptr gpu;
     65 };
     66 
     67 /* Take a reference to an allocation pool. Call directly after allocating from
     68  * an unowned pool for correct operation. */
     69 
     70 static inline struct panfrost_pool_ref
     71 panfrost_pool_take_ref(struct panfrost_pool *pool, mali_ptr ptr)
     72 {
     73         if (!pool->owned)
     74                 panfrost_bo_reference(pool->transient_bo);
     75 
     76         return (struct panfrost_pool_ref) {
     77                 .bo = pool->transient_bo,
     78                 .gpu = ptr
     79         };
     80 }
     81 
     82 void
     83 panfrost_pool_init(struct panfrost_pool *pool, void *memctx,
     84                    struct panfrost_device *dev, unsigned create_flags,
     85                    size_t slab_size, const char *label, bool prealloc, bool
     86                    owned);
     87 
     88 void
     89 panfrost_pool_cleanup(struct panfrost_pool *pool);
     90 
     91 static inline unsigned
     92 panfrost_pool_num_bos(struct panfrost_pool *pool)
     93 {
     94         assert(pool->owned && "pool does not track BOs in unowned mode");
     95         return util_dynarray_num_elements(&pool->bos, struct panfrost_bo *);
     96 }
     97 
     98 void
     99 panfrost_pool_get_bo_handles(struct panfrost_pool *pool, uint32_t *handles);
    100 
    101 #endif
    102