1 /************************************************************************** 2 * 3 * Copyright 2007-2008 VMware, Inc. 4 * Copyright 2015 Advanced Micro Devices, Inc. 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 **************************************************************************/ 28 29 #ifndef PB_CACHE_H 30 #define PB_CACHE_H 31 32 #include "pb_buffer.h" 33 #include "util/simple_mtx.h" 34 #include "util/list.h" 35 #include "util/u_thread.h" 36 37 /** 38 * Statically inserted into the driver-specific buffer structure. 39 */ 40 struct pb_cache_entry 41 { 42 struct list_head head; 43 unsigned start_ms; /**< Cached start time */ 44 unsigned bucket_index; 45 }; 46 47 struct pb_cache 48 { 49 /* The cache is divided into buckets for minimizing cache misses. 50 * The driver controls which buffer goes into which bucket. 51 */ 52 struct list_head *buckets; 53 54 simple_mtx_t mutex; 55 void *winsys; 56 uint64_t cache_size; 57 uint64_t max_cache_size; 58 unsigned num_heaps; 59 unsigned msecs; 60 int64_t msecs_base_time; 61 unsigned num_buffers; 62 unsigned bypass_usage; 63 float size_factor; 64 unsigned offsetof_pb_cache_entry; /* offsetof(driver_bo, pb_cache_entry) */ 65 66 void (*destroy_buffer)(void *winsys, struct pb_buffer_lean *buf); 67 bool (*can_reclaim)(void *winsys, struct pb_buffer_lean *buf); 68 }; 69 70 void pb_cache_add_buffer(struct pb_cache *mgr, struct pb_cache_entry *entry); 71 struct pb_buffer_lean *pb_cache_reclaim_buffer(struct pb_cache *mgr, pb_size size, 72 unsigned alignment, unsigned usage, 73 unsigned bucket_index); 74 unsigned pb_cache_release_all_buffers(struct pb_cache *mgr); 75 void pb_cache_init_entry(struct pb_cache *mgr, struct pb_cache_entry *entry, 76 struct pb_buffer_lean *buf, unsigned bucket_index); 77 void pb_cache_init(struct pb_cache *mgr, unsigned num_heaps, 78 unsigned usecs, float size_factor, 79 unsigned bypass_usage, uint64_t maximum_cache_size, 80 unsigned offsetof_pb_cache_entry, void *winsys, 81 void (*destroy_buffer)(void *winsys, struct pb_buffer_lean *buf), 82 bool (*can_reclaim)(void *winsys, struct pb_buffer_lean *buf)); 83 void pb_cache_deinit(struct pb_cache *mgr); 84 85 #endif 86