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 (at) streamnovation.com> 23 */ 24 25 #ifndef COMPUTE_MEMORY_POOL 26 #define COMPUTE_MEMORY_POOL 27 28 #include <stdlib.h> 29 30 struct compute_memory_pool; 31 32 struct compute_memory_item 33 { 34 int64_t id; ///ID of the memory chunk 35 36 int untouched; ///True if the memory contains only junk, no need to save it for defrag 37 38 int64_t start_in_dw; ///Start pointer in dwords relative in the pool bo 39 int64_t size_in_dw; ///Size of the chunk in dwords 40 41 struct compute_memory_pool* pool; 42 43 struct compute_memory_item* prev; 44 struct compute_memory_item* next; 45 }; 46 47 struct compute_memory_pool 48 { 49 int64_t next_id; ///For generating unique IDs for memory chunks 50 int64_t size_in_dw; ///Size of the pool in dwords 51 52 struct r600_resource *bo; ///The pool buffer object resource 53 struct compute_memory_item* item_list; ///Allocated memory chunks in the buffer,they must be ordered by "start_in_dw" 54 struct r600_screen *screen; 55 56 uint32_t *shadow; ///host copy of the pool, used for defragmentation 57 }; 58 59 60 struct compute_memory_pool* compute_memory_pool_new(struct r600_screen *rscreen); ///Creates a new pool 61 void compute_memory_pool_delete(struct compute_memory_pool* pool); ///Frees all stuff in the pool and the pool struct itself too 62 63 int64_t compute_memory_prealloc_chunk(struct compute_memory_pool* pool, int64_t size_in_dw); ///searches for an empty space in the pool, return with the pointer to the allocatable space in the pool, returns -1 on failure 64 65 struct compute_memory_item* compute_memory_postalloc_chunk(struct compute_memory_pool* pool, int64_t start_in_dw); ///search for the chunk where we can link our new chunk after it 66 67 /** 68 * reallocates pool, conserves data 69 */ 70 void compute_memory_grow_pool(struct compute_memory_pool* pool, struct pipe_context * pipe, 71 int new_size_in_dw); 72 73 /** 74 * Copy pool from device to host, or host to device 75 */ 76 void compute_memory_shadow(struct compute_memory_pool* pool, 77 struct pipe_context * pipe, int device_to_host); 78 79 /** 80 * Allocates pending allocations in the pool 81 */ 82 void compute_memory_finalize_pending(struct compute_memory_pool* pool, 83 struct pipe_context * pipe); 84 void compute_memory_defrag(struct compute_memory_pool* pool); ///Defragment the memory pool, always heavy memory usage 85 void compute_memory_free(struct compute_memory_pool* pool, int64_t id); 86 struct compute_memory_item* compute_memory_alloc(struct compute_memory_pool* pool, int64_t size_in_dw); ///Creates pending allocations 87 88 /** 89 * Transfer data host<->device, offset and size is in bytes 90 */ 91 void compute_memory_transfer(struct compute_memory_pool* pool, 92 struct pipe_context * pipe, int device_to_host, 93 struct compute_memory_item* chunk, void* data, 94 int offset_in_chunk, int size); 95 96 void compute_memory_transfer_direct(struct compute_memory_pool* pool, int chunk_to_data, struct compute_memory_item* chunk, struct r600_resource* data, int offset_in_chunk, int offset_in_data, int size); ///Transfer data between chunk<->data, it is for VRAM<->GART transfers 97 98 #endif 99
