1 2 /********************************************************** 3 * Copyright 2008-2022 VMware, Inc. All rights reserved. 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, copy, 9 * modify, merge, publish, distribute, sublicense, and/or sell copies 10 * of the Software, and to permit persons to whom the Software is 11 * furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be 14 * included in all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 17 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 19 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 20 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 21 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 **********************************************************/ 26 27 #ifndef SVGA_SCREEN_CACHE_H_ 28 #define SVGA_SCREEN_CACHE_H_ 29 30 31 #include "svga_types.h" 32 #include "svga_reg.h" 33 #include "svga3d_reg.h" 34 35 #include "util/u_thread.h" 36 37 #include "util/list.h" 38 39 40 /* Guess the storage size of cached surfaces and try and keep it under 41 * this amount: 42 */ 43 #define SVGA_HOST_SURFACE_CACHE_BYTES (16 * 1024 * 1024) 44 45 /* Maximum number of discrete surfaces in the cache: 46 */ 47 #define SVGA_HOST_SURFACE_CACHE_SIZE 1024 48 49 /* Number of hash buckets: 50 */ 51 #define SVGA_HOST_SURFACE_CACHE_BUCKETS 256 52 53 54 struct svga_winsys_surface; 55 struct svga_screen; 56 struct svga_context; 57 58 /** 59 * Same as svga_winsys_screen::surface_create. 60 */ 61 struct svga_host_surface_cache_key 62 { 63 SVGA3dSurfaceAllFlags flags; 64 SVGA3dSurfaceFormat format; 65 SVGA3dSize size; 66 uint32_t numFaces:3; 67 uint32_t arraySize:16; 68 uint32_t numMipLevels:6; 69 uint32_t cachable:1; /* False if this is a shared surface */ 70 uint32_t sampleCount:5; 71 uint32_t scanout:1; 72 uint32_t coherent:1; 73 uint32_t persistent:1; 74 }; 75 76 77 struct svga_host_surface_cache_entry 78 { 79 /** 80 * Head for the LRU list, svga_host_surface_cache::unused, and 81 * svga_host_surface_cache::empty 82 */ 83 struct list_head head; 84 85 /** Head for the bucket lists. */ 86 struct list_head bucket_head; 87 88 struct svga_host_surface_cache_key key; 89 struct svga_winsys_surface *handle; 90 91 struct pipe_fence_handle *fence; 92 }; 93 94 95 /** 96 * Cache of the host surfaces. 97 * 98 * A cache entry can be in the following stages: 99 * 1. empty (entry->handle = NULL) 100 * 2. holding a buffer in a validate list 101 * 3. holding a buffer in an invalidate list 102 * 4. holding a flushed buffer (not in any validate list) with an active fence 103 * 5. holding a flushed buffer with an expired fence 104 * 105 * An entry progresses from 1 -> 2 -> 3 -> 4 -> 5. When we need an entry to put a 106 * buffer into we preferentially take from 1, or from the least recently used 107 * buffer from 4/5. 108 */ 109 struct svga_host_surface_cache 110 { 111 mtx_t mutex; 112 113 /* Unused buffers are put in buckets to speed up lookups */ 114 struct list_head bucket[SVGA_HOST_SURFACE_CACHE_BUCKETS]; 115 116 /* Entries with unused buffers, ordered from most to least recently used 117 * (3 and 4) */ 118 struct list_head unused; 119 120 /* Entries with buffers still in validate list (2) */ 121 struct list_head validated; 122 123 /* Entries with buffers still in invalidate list (3) */ 124 struct list_head invalidated; 125 126 /** Empty entries (1) */ 127 struct list_head empty; 128 129 /** The actual storage for the entries */ 130 struct svga_host_surface_cache_entry entries[SVGA_HOST_SURFACE_CACHE_SIZE]; 131 132 /** Sum of sizes of all surfaces (in bytes) */ 133 unsigned total_size; 134 }; 135 136 137 void 138 svga_screen_cache_cleanup(struct svga_screen *svgascreen); 139 140 void 141 svga_screen_cache_flush(struct svga_screen *svgascreen, 142 struct svga_context *svga, 143 struct pipe_fence_handle *fence); 144 145 enum pipe_error 146 svga_screen_cache_init(struct svga_screen *svgascreen); 147 148 149 struct svga_winsys_surface * 150 svga_screen_surface_create(struct svga_screen *svgascreen, 151 unsigned bind_flags, enum pipe_resource_usage usage, 152 bool *invalidated, 153 struct svga_host_surface_cache_key *key); 154 155 void 156 svga_screen_surface_destroy(struct svga_screen *svgascreen, 157 const struct svga_host_surface_cache_key *key, 158 bool to_invalidate, 159 struct svga_winsys_surface **handle); 160 161 void 162 svga_screen_cache_dump(const struct svga_screen *svgascreen); 163 164 unsigned 165 svga_surface_size(const struct svga_host_surface_cache_key *key); 166 167 168 #endif /* SVGA_SCREEN_CACHE_H_ */ 169