src/gallium/drivers/r600/compute_memory_pool.h

   1 /*
   2  * Permission is hereby granted, free of charge, to any person obtaining a
   3  * copy of this software and associated documentation files (the "Software"),
   4  * to deal in the Software without restriction, including without limitation
   5  * on the rights to use, copy, modify, merge, publish, distribute, sub
   6  * license, and/or sell copies of the Software, and to permit persons to whom
   7  * the Software is furnished to do so, subject to the following conditions:
   8  *
   9  * The above copyright notice and this permission notice (including the next
  10  * paragraph) shall be included in all copies or substantial portions of the
  11  * Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  16  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  17  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  18  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  19  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  *
  21  * Authors:
  22  *      Adam Rak <adam.rak@streamnovation.com>
  23  */
  24
  25 #ifndef COMPUTE_MEMORY_POOL
  26 #define COMPUTE_MEMORY_POOL
  27
  28 #include <stdlib.h>
  29
  30 #define ITEM_MAPPED_FOR_READING (1<<0)
  31 #define ITEM_MAPPED_FOR_WRITING (1<<1)
  32 #define ITEM_FOR_PROMOTING      (1<<2)
  33 #define ITEM_FOR_DEMOTING       (1<<3)
  34
  35 #define POOL_FRAGMENTED (1<<0)
  36
  37 struct compute_memory_pool;
  38
  39 struct compute_memory_item
  40 {
  41         int64_t id;             /**< ID of the memory chunk */
  42
  43         uint32_t status;        /**< Will track the status of the item */
  44
  45         /** Start pointer in dwords relative in the pool bo. If an item
  46          * is unallocated, then this value must be -1 to indicate this. */
  47         int64_t start_in_dw;
  48         int64_t size_in_dw;     /**< Size of the chunk in dwords */
  49
  50         /** Intermediate buffer asociated with an item. It is used mainly for mapping
  51          * items against it. They are listed in the pool's unallocated list */
  52         struct r600_resource *real_buffer;
  53
  54         struct compute_memory_pool* pool;
  55
  56         struct list_head link;
  57 };
  58
  59 struct compute_memory_pool
  60 {
  61         int64_t next_id;        /**< For generating unique IDs for memory chunks */
  62         int64_t size_in_dw;     /**< Size of the pool in dwords */
  63
  64         struct r600_resource *bo;       /**< The pool buffer object resource */
  65         struct r600_screen *screen;
  66
  67         uint32_t *shadow;       /**< host copy of the pool, used for growing the pool */
  68
  69         uint32_t status;        /**< Status of the pool */
  70
  71         /** Allocated memory items in the pool, they must be ordered by "start_in_dw" */
  72         struct list_head *item_list;
  73
  74         /** Unallocated memory items, this list contains all the items that aren't
  75          * yet in the pool */
  76         struct list_head *unallocated_list;
  77 };
  78
  79
  80 static inline int is_item_in_pool(struct compute_memory_item *item)
  81 {
  82         return item->start_in_dw != -1;
  83 }
  84
  85 struct compute_memory_pool* compute_memory_pool_new(struct r600_screen *rscreen);
  86
  87 void compute_memory_pool_delete(struct compute_memory_pool* pool);
  88
  89 int compute_memory_finalize_pending(struct compute_memory_pool* pool,
  90         struct pipe_context * pipe);
  91
  92 void compute_memory_demote_item(struct compute_memory_pool *pool,
  93         struct compute_memory_item *item, struct pipe_context *pipe);
  94
  95 void compute_memory_free(struct compute_memory_pool* pool, int64_t id);
  96
  97 struct compute_memory_item* compute_memory_alloc(struct compute_memory_pool* pool,
  98         int64_t size_in_dw);
  99
 100 #endif