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 "freedreno_drmif.h" 34 #include "freedreno_priv.h" 35 36 drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER; 37 drm_private void bo_del(struct fd_bo *bo); 38 39 /* set buffer name, and add to table, call w/ table_lock held: */ 40 static void set_name(struct fd_bo *bo, uint32_t name) 41 { 42 bo->name = name; 43 /* add ourself into the handle table: */ 44 drmHashInsert(bo->dev->name_table, name, bo); 45 } 46 47 /* lookup a buffer, call w/ table_lock held: */ 48 static struct fd_bo * lookup_bo(void *tbl, uint32_t key) 49 { 50 struct fd_bo *bo = NULL; 51 if (!drmHashLookup(tbl, key, (void **)&bo)) { 52 /* found, incr refcnt and return: */ 53 bo = fd_bo_ref(bo); 54 55 /* don't break the bucket if this bo was found in one */ 56 list_delinit(&bo->list); 57 } 58 return bo; 59 } 60 61 /* allocate a new buffer object, call w/ table_lock held */ 62 static struct fd_bo * bo_from_handle(struct fd_device *dev, 63 uint32_t size, uint32_t handle) 64 { 65 struct fd_bo *bo; 66 67 bo = dev->funcs->bo_from_handle(dev, size, handle); 68 if (!bo) { 69 struct drm_gem_close req = { 70 .handle = handle, 71 }; 72 drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &req); 73 return NULL; 74 } 75 bo->dev = fd_device_ref(dev); 76 bo->size = size; 77 bo->handle = handle; 78 atomic_set(&bo->refcnt, 1); 79 list_inithead(&bo->list); 80 /* add ourself into the handle table: */ 81 drmHashInsert(dev->handle_table, handle, bo); 82 return bo; 83 } 84 85 struct fd_bo * 86 fd_bo_new(struct fd_device *dev, uint32_t size, uint32_t flags) 87 { 88 struct fd_bo *bo = NULL; 89 uint32_t handle; 90 int ret; 91 92 bo = fd_bo_cache_alloc(&dev->bo_cache, &size, flags); 93 if (bo) 94 return bo; 95 96 ret = dev->funcs->bo_new_handle(dev, size, flags, &handle); 97 if (ret) 98 return NULL; 99 100 pthread_mutex_lock(&table_lock); 101 bo = bo_from_handle(dev, size, handle); 102 bo->bo_reuse = TRUE; 103 pthread_mutex_unlock(&table_lock); 104 105 return bo; 106 } 107 108 struct fd_bo * 109 fd_bo_from_handle(struct fd_device *dev, uint32_t handle, uint32_t size) 110 { 111 struct fd_bo *bo = NULL; 112 113 pthread_mutex_lock(&table_lock); 114 115 bo = lookup_bo(dev->handle_table, handle); 116 if (bo) 117 goto out_unlock; 118 119 bo = bo_from_handle(dev, size, handle); 120 121 out_unlock: 122 pthread_mutex_unlock(&table_lock); 123 124 return bo; 125 } 126 127 struct fd_bo * 128 fd_bo_from_dmabuf(struct fd_device *dev, int fd) 129 { 130 int ret, size; 131 uint32_t handle; 132 struct fd_bo *bo; 133 134 pthread_mutex_lock(&table_lock); 135 ret = drmPrimeFDToHandle(dev->fd, fd, &handle); 136 if (ret) { 137 return NULL; 138 } 139 140 bo = lookup_bo(dev->handle_table, handle); 141 if (bo) 142 goto out_unlock; 143 144 /* lseek() to get bo size */ 145 size = lseek(fd, 0, SEEK_END); 146 lseek(fd, 0, SEEK_CUR); 147 148 bo = bo_from_handle(dev, size, handle); 149 150 out_unlock: 151 pthread_mutex_unlock(&table_lock); 152 153 return bo; 154 } 155 156 struct fd_bo * fd_bo_from_name(struct fd_device *dev, uint32_t name) 157 { 158 struct drm_gem_open req = { 159 .name = name, 160 }; 161 struct fd_bo *bo; 162 163 pthread_mutex_lock(&table_lock); 164 165 /* check name table first, to see if bo is already open: */ 166 bo = lookup_bo(dev->name_table, name); 167 if (bo) 168 goto out_unlock; 169 170 if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) { 171 ERROR_MSG("gem-open failed: %s", strerror(errno)); 172 goto out_unlock; 173 } 174 175 bo = lookup_bo(dev->handle_table, req.handle); 176 if (bo) 177 goto out_unlock; 178 179 bo = bo_from_handle(dev, req.size, req.handle); 180 if (bo) 181 set_name(bo, name); 182 183 out_unlock: 184 pthread_mutex_unlock(&table_lock); 185 186 return bo; 187 } 188 189 struct fd_bo * fd_bo_ref(struct fd_bo *bo) 190 { 191 atomic_inc(&bo->refcnt); 192 return bo; 193 } 194 195 void fd_bo_del(struct fd_bo *bo) 196 { 197 struct fd_device *dev = bo->dev; 198 199 if (!atomic_dec_and_test(&bo->refcnt)) 200 return; 201 202 pthread_mutex_lock(&table_lock); 203 204 if (bo->bo_reuse && (fd_bo_cache_free(&dev->bo_cache, bo) == 0)) 205 goto out; 206 207 bo_del(bo); 208 fd_device_del_locked(dev); 209 out: 210 pthread_mutex_unlock(&table_lock); 211 } 212 213 /* Called under table_lock */ 214 drm_private void bo_del(struct fd_bo *bo) 215 { 216 if (bo->map) 217 drm_munmap(bo->map, bo->size); 218 219 /* TODO probably bo's in bucket list get removed from 220 * handle table?? 221 */ 222 223 if (bo->handle) { 224 struct drm_gem_close req = { 225 .handle = bo->handle, 226 }; 227 drmHashDelete(bo->dev->handle_table, bo->handle); 228 if (bo->name) 229 drmHashDelete(bo->dev->name_table, bo->name); 230 drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req); 231 } 232 233 bo->funcs->destroy(bo); 234 } 235 236 int fd_bo_get_name(struct fd_bo *bo, uint32_t *name) 237 { 238 if (!bo->name) { 239 struct drm_gem_flink req = { 240 .handle = bo->handle, 241 }; 242 int ret; 243 244 ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req); 245 if (ret) { 246 return ret; 247 } 248 249 pthread_mutex_lock(&table_lock); 250 set_name(bo, req.name); 251 pthread_mutex_unlock(&table_lock); 252 bo->bo_reuse = FALSE; 253 } 254 255 *name = bo->name; 256 257 return 0; 258 } 259 260 uint32_t fd_bo_handle(struct fd_bo *bo) 261 { 262 return bo->handle; 263 } 264 265 int fd_bo_dmabuf(struct fd_bo *bo) 266 { 267 int ret, prime_fd; 268 269 ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC, 270 &prime_fd); 271 if (ret) { 272 ERROR_MSG("failed to get dmabuf fd: %d", ret); 273 return ret; 274 } 275 276 bo->bo_reuse = FALSE; 277 278 return prime_fd; 279 } 280 281 uint32_t fd_bo_size(struct fd_bo *bo) 282 { 283 return bo->size; 284 } 285 286 void * fd_bo_map(struct fd_bo *bo) 287 { 288 if (!bo->map) { 289 uint64_t offset; 290 int ret; 291 292 ret = bo->funcs->offset(bo, &offset); 293 if (ret) { 294 return NULL; 295 } 296 297 bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, 298 bo->dev->fd, offset); 299 if (bo->map == MAP_FAILED) { 300 ERROR_MSG("mmap failed: %s", strerror(errno)); 301 bo->map = NULL; 302 } 303 } 304 return bo->map; 305 } 306 307 /* a bit odd to take the pipe as an arg, but it's a, umm, quirk of kgsl.. */ 308 int fd_bo_cpu_prep(struct fd_bo *bo, struct fd_pipe *pipe, uint32_t op) 309 { 310 return bo->funcs->cpu_prep(bo, pipe, op); 311 } 312 313 void fd_bo_cpu_fini(struct fd_bo *bo) 314 { 315 bo->funcs->cpu_fini(bo); 316 } 317 318 #ifndef HAVE_FREEDRENO_KGSL 319 struct fd_bo * fd_bo_from_fbdev(struct fd_pipe *pipe, int fbfd, uint32_t size) 320 { 321 return NULL; 322 } 323 #endif 324
