1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ 2 3 /* 4 * Copyright (C) 2012 Rob Clark <robclark (at) freedesktop.org> 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice (including the next 14 * paragraph) shall be included in all copies or substantial portions of the 15 * Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 23 * SOFTWARE. 24 * 25 * Authors: 26 * Rob Clark <robclark (at) freedesktop.org> 27 */ 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif 32 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #include <unistd.h> 36 37 #include "freedreno_drmif.h" 38 #include "freedreno_priv.h" 39 40 static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER; 41 42 struct fd_device * kgsl_device_new(int fd); 43 struct fd_device * msm_device_new(int fd); 44 45 static void 46 add_bucket(struct fd_device *dev, int size) 47 { 48 unsigned int i = dev->num_buckets; 49 50 assert(i < ARRAY_SIZE(dev->cache_bucket)); 51 52 list_inithead(&dev->cache_bucket[i].list); 53 dev->cache_bucket[i].size = size; 54 dev->num_buckets++; 55 } 56 57 static void 58 init_cache_buckets(struct fd_device *dev) 59 { 60 unsigned long size, cache_max_size = 64 * 1024 * 1024; 61 62 /* OK, so power of two buckets was too wasteful of memory. 63 * Give 3 other sizes between each power of two, to hopefully 64 * cover things accurately enough. (The alternative is 65 * probably to just go for exact matching of sizes, and assume 66 * that for things like composited window resize the tiled 67 * width/height alignment and rounding of sizes to pages will 68 * get us useful cache hit rates anyway) 69 */ 70 add_bucket(dev, 4096); 71 add_bucket(dev, 4096 * 2); 72 add_bucket(dev, 4096 * 3); 73 74 /* Initialize the linked lists for BO reuse cache. */ 75 for (size = 4 * 4096; size <= cache_max_size; size *= 2) { 76 add_bucket(dev, size); 77 add_bucket(dev, size + size * 1 / 4); 78 add_bucket(dev, size + size * 2 / 4); 79 add_bucket(dev, size + size * 3 / 4); 80 } 81 } 82 83 struct fd_device * fd_device_new(int fd) 84 { 85 struct fd_device *dev; 86 drmVersionPtr version; 87 88 /* figure out if we are kgsl or msm drm driver: */ 89 version = drmGetVersion(fd); 90 if (!version) { 91 ERROR_MSG("cannot get version: %s", strerror(errno)); 92 return NULL; 93 } 94 95 if (!strcmp(version->name, "msm")) { 96 DEBUG_MSG("msm DRM device"); 97 dev = msm_device_new(fd); 98 #ifdef HAVE_FREEDRENO_KGSL 99 } else if (!strcmp(version->name, "kgsl")) { 100 DEBUG_MSG("kgsl DRM device"); 101 dev = kgsl_device_new(fd); 102 #endif 103 } else { 104 ERROR_MSG("unknown device: %s", version->name); 105 dev = NULL; 106 } 107 drmFreeVersion(version); 108 109 if (!dev) 110 return NULL; 111 112 atomic_set(&dev->refcnt, 1); 113 dev->fd = fd; 114 dev->handle_table = drmHashCreate(); 115 dev->name_table = drmHashCreate(); 116 init_cache_buckets(dev); 117 118 return dev; 119 } 120 121 /* like fd_device_new() but creates it's own private dup() of the fd 122 * which is close()d when the device is finalized. 123 */ 124 struct fd_device * fd_device_new_dup(int fd) 125 { 126 struct fd_device *dev = fd_device_new(dup(fd)); 127 if (dev) 128 dev->closefd = 1; 129 return dev; 130 } 131 132 struct fd_device * fd_device_ref(struct fd_device *dev) 133 { 134 atomic_inc(&dev->refcnt); 135 return dev; 136 } 137 138 static void fd_device_del_impl(struct fd_device *dev) 139 { 140 fd_cleanup_bo_cache(dev, 0); 141 drmHashDestroy(dev->handle_table); 142 drmHashDestroy(dev->name_table); 143 if (dev->closefd) 144 close(dev->fd); 145 dev->funcs->destroy(dev); 146 } 147 148 drm_private void fd_device_del_locked(struct fd_device *dev) 149 { 150 if (!atomic_dec_and_test(&dev->refcnt)) 151 return; 152 fd_device_del_impl(dev); 153 } 154 155 void fd_device_del(struct fd_device *dev) 156 { 157 if (!atomic_dec_and_test(&dev->refcnt)) 158 return; 159 pthread_mutex_lock(&table_lock); 160 fd_device_del_impl(dev); 161 pthread_mutex_unlock(&table_lock); 162 } 163 164 int fd_device_fd(struct fd_device *dev) 165 { 166 return dev->fd; 167 } 168
