Inki Dae | e07b650 | 2012-05-04 19:13:14 +0900 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 Samsung Electronics Co., Ltd. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 20 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 21 | * SOFTWARE. |
| 22 | * |
| 23 | * Authors: |
| 24 | * Inki Dae <inki.dae@samsung.com> |
| 25 | */ |
| 26 | |
| 27 | #ifdef HAVE_CONFIG_H |
| 28 | #include "config.h" |
| 29 | #endif |
| 30 | |
| 31 | #include <stdlib.h> |
| 32 | #include <stdio.h> |
| 33 | #include <string.h> |
| 34 | #include <errno.h> |
| 35 | |
| 36 | #include <sys/mman.h> |
| 37 | #include <linux/stddef.h> |
| 38 | |
| 39 | #include <xf86drm.h> |
| 40 | |
| 41 | #include "exynos_drm.h" |
| 42 | #include "exynos_drmif.h" |
| 43 | |
| 44 | /* |
| 45 | * Create exynos drm device object. |
| 46 | * |
| 47 | * @fd: file descriptor to exynos drm driver opened. |
| 48 | * |
| 49 | * if true, return the device object else NULL. |
| 50 | */ |
| 51 | struct exynos_device * exynos_device_create(int fd) |
| 52 | { |
| 53 | struct exynos_device *dev; |
| 54 | |
| 55 | dev = calloc(sizeof(*dev), 1); |
| 56 | if (!dev) { |
| 57 | fprintf(stderr, "failed to create device[%s].\n", |
| 58 | strerror(errno)); |
| 59 | return NULL; |
| 60 | } |
| 61 | |
| 62 | dev->fd = fd; |
| 63 | |
| 64 | return dev; |
| 65 | } |
| 66 | |
| 67 | /* |
| 68 | * Destroy exynos drm device object |
| 69 | * |
| 70 | * @dev: exynos drm device object. |
| 71 | */ |
| 72 | void exynos_device_destroy(struct exynos_device *dev) |
| 73 | { |
| 74 | free(dev); |
| 75 | } |
| 76 | |
| 77 | /* |
| 78 | * Create a exynos buffer object to exynos drm device. |
| 79 | * |
| 80 | * @dev: exynos drm device object. |
| 81 | * @size: user-desired size. |
| 82 | * flags: user-desired memory type. |
| 83 | * user can set one or more types among several types to memory |
| 84 | * allocation and cache attribute types. and as default, |
| 85 | * EXYNOS_BO_NONCONTIG and EXYNOS-BO_NONCACHABLE types would |
| 86 | * be used. |
| 87 | * |
| 88 | * if true, return a exynos buffer object else NULL. |
| 89 | */ |
| 90 | struct exynos_bo * exynos_bo_create(struct exynos_device *dev, |
| 91 | size_t size, uint32_t flags) |
| 92 | { |
| 93 | struct exynos_bo *bo; |
| 94 | struct drm_exynos_gem_create req = { |
| 95 | .size = size, |
| 96 | .flags = flags, |
| 97 | }; |
| 98 | |
| 99 | if (size == 0) { |
| 100 | fprintf(stderr, "invalid size.\n"); |
| 101 | goto fail; |
| 102 | } |
| 103 | |
| 104 | bo = calloc(sizeof(*bo), 1); |
| 105 | if (!bo) { |
| 106 | fprintf(stderr, "failed to create bo[%s].\n", |
| 107 | strerror(errno)); |
| 108 | goto err_free_bo; |
| 109 | } |
| 110 | |
| 111 | bo->dev = dev; |
| 112 | |
| 113 | if (drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &req)){ |
| 114 | fprintf(stderr, "failed to create gem object[%s].\n", |
| 115 | strerror(errno)); |
| 116 | goto err_free_bo; |
| 117 | } |
| 118 | |
| 119 | bo->handle = req.handle; |
| 120 | bo->size = size; |
| 121 | bo->flags = flags; |
| 122 | |
| 123 | return bo; |
| 124 | |
| 125 | err_free_bo: |
| 126 | free(bo); |
| 127 | fail: |
| 128 | return NULL; |
| 129 | } |
| 130 | |
| 131 | /* |
| 132 | * Get information to gem region allocated. |
| 133 | * |
| 134 | * @dev: exynos drm device object. |
| 135 | * @handle: gem handle to request gem info. |
| 136 | * @size: size to gem object and returned by kernel side. |
| 137 | * @flags: gem flags to gem object and returned by kernel side. |
| 138 | * |
| 139 | * with this function call, you can get flags and size to gem handle |
| 140 | * through bo object. |
| 141 | * |
| 142 | * if true, return 0 else negative. |
| 143 | */ |
| 144 | int exynos_bo_get_info(struct exynos_device *dev, uint32_t handle, |
| 145 | size_t *size, uint32_t *flags) |
| 146 | { |
| 147 | int ret; |
| 148 | struct drm_exynos_gem_info req = { |
| 149 | .handle = handle, |
| 150 | }; |
| 151 | |
| 152 | ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_GET, &req); |
| 153 | if (ret < 0) { |
| 154 | fprintf(stderr, "failed to get gem object information[%s].\n", |
| 155 | strerror(errno)); |
| 156 | return ret; |
| 157 | } |
| 158 | |
| 159 | *size = req.size; |
| 160 | *flags = req.flags; |
| 161 | |
| 162 | return 0; |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Destroy a exynos buffer object. |
| 167 | * |
| 168 | * @bo: a exynos buffer object to be destroyed. |
| 169 | */ |
| 170 | void exynos_bo_destroy(struct exynos_bo *bo) |
| 171 | { |
| 172 | if (!bo) |
| 173 | return; |
| 174 | |
| 175 | if (bo->vaddr) |
| 176 | munmap(bo->vaddr, bo->size); |
| 177 | |
| 178 | if (bo->handle) { |
| 179 | struct drm_gem_close req = { |
| 180 | .handle = bo->handle, |
| 181 | }; |
| 182 | |
| 183 | drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req); |
| 184 | } |
| 185 | |
| 186 | free(bo); |
| 187 | } |
| 188 | |
| 189 | |
| 190 | /* |
| 191 | * Get a exynos buffer object from a gem global object name. |
| 192 | * |
| 193 | * @dev: a exynos device object. |
| 194 | * @name: a gem global object name exported by another process. |
| 195 | * |
| 196 | * this interface is used to get a exynos buffer object from a gem |
| 197 | * global object name sent by another process for buffer sharing. |
| 198 | * |
| 199 | * if true, return a exynos buffer object else NULL. |
| 200 | * |
| 201 | */ |
| 202 | struct exynos_bo * exynos_bo_from_name(struct exynos_device *dev, uint32_t name) |
| 203 | { |
| 204 | struct exynos_bo *bo; |
| 205 | struct drm_gem_open req = { |
| 206 | .name = name, |
| 207 | }; |
| 208 | |
| 209 | bo = calloc(sizeof(*bo), 1); |
| 210 | if (!bo) { |
| 211 | fprintf(stderr, "failed to allocate bo[%s].\n", |
| 212 | strerror(errno)); |
| 213 | return NULL; |
| 214 | } |
| 215 | |
| 216 | if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) { |
| 217 | fprintf(stderr, "failed to open gem object[%s].\n", |
| 218 | strerror(errno)); |
| 219 | goto err_free_bo; |
| 220 | } |
| 221 | |
| 222 | bo->dev = dev; |
| 223 | bo->name = name; |
| 224 | bo->handle = req.handle; |
| 225 | |
| 226 | return bo; |
| 227 | |
| 228 | err_free_bo: |
| 229 | free(bo); |
| 230 | return NULL; |
| 231 | } |
| 232 | |
| 233 | /* |
| 234 | * Get a gem global object name from a gem object handle. |
| 235 | * |
| 236 | * @bo: a exynos buffer object including gem handle. |
| 237 | * @name: a gem global object name to be got by kernel driver. |
| 238 | * |
| 239 | * this interface is used to get a gem global object name from a gem object |
| 240 | * handle to a buffer that wants to share it with another process. |
| 241 | * |
| 242 | * if true, return 0 else negative. |
| 243 | */ |
| 244 | int exynos_bo_get_name(struct exynos_bo *bo, uint32_t *name) |
| 245 | { |
| 246 | if (!bo->name) { |
| 247 | struct drm_gem_flink req = { |
| 248 | .handle = bo->handle, |
| 249 | }; |
| 250 | int ret; |
| 251 | |
| 252 | ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req); |
| 253 | if (ret) { |
| 254 | fprintf(stderr, "failed to get gem global name[%s].\n", |
| 255 | strerror(errno)); |
| 256 | return ret; |
| 257 | } |
| 258 | |
| 259 | bo->name = req.name; |
| 260 | } |
| 261 | |
| 262 | *name = bo->name; |
| 263 | |
| 264 | return 0; |
| 265 | } |
| 266 | |
| 267 | uint32_t exynos_bo_handle(struct exynos_bo *bo) |
| 268 | { |
| 269 | return bo->handle; |
| 270 | } |
| 271 | |
| 272 | /* |
| 273 | * Mmap a buffer to user space. |
| 274 | * |
| 275 | * @bo: a exynos buffer object including a gem object handle to be mmapped |
| 276 | * to user space. |
| 277 | * |
| 278 | * if true, user pointer mmaped else NULL. |
| 279 | */ |
| 280 | void *exynos_bo_map(struct exynos_bo *bo) |
| 281 | { |
| 282 | if (!bo->vaddr) { |
| 283 | struct exynos_device *dev = bo->dev; |
| 284 | struct drm_exynos_gem_mmap req = { |
| 285 | .handle = bo->handle, |
| 286 | .size = bo->size, |
| 287 | }; |
| 288 | int ret; |
| 289 | |
| 290 | ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_MMAP, &req); |
| 291 | if (ret) { |
| 292 | fprintf(stderr, "failed to mmap[%s].\n", |
| 293 | strerror(errno)); |
| 294 | return NULL; |
| 295 | } |
| 296 | |
| 297 | bo->vaddr = req.mapped; |
| 298 | } |
| 299 | |
| 300 | return bo->vaddr; |
| 301 | } |
| 302 | |
| 303 | /* |
| 304 | * Export gem object to dmabuf as file descriptor. |
| 305 | * |
| 306 | * @dev: a exynos device object. |
| 307 | * @handle: gem handle to be exported into dmabuf as file descriptor. |
| 308 | * @fd: file descriptor to dmabuf exported from gem handle and |
| 309 | * returned by kernel side. |
| 310 | * |
| 311 | * if true, return 0 else negative. |
| 312 | */ |
| 313 | int exynos_prime_handle_to_fd(struct exynos_device *dev, uint32_t handle, |
| 314 | int *fd) |
| 315 | { |
| 316 | int ret; |
| 317 | struct drm_prime_handle req = { |
| 318 | .handle = handle, |
| 319 | }; |
| 320 | |
| 321 | ret = drmIoctl(dev->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &req); |
| 322 | if (ret) { |
| 323 | fprintf(stderr, "failed to mmap[%s].\n", |
| 324 | strerror(errno)); |
| 325 | return ret; |
| 326 | } |
| 327 | |
| 328 | *fd = req.fd; |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | * Import file descriptor into gem handle. |
| 334 | * |
| 335 | * @dev: a exynos device object. |
| 336 | * @fd: file descriptor exported into dmabuf. |
| 337 | * @handle: gem handle to gem object imported from file descriptor |
| 338 | * and returned by kernel side. |
| 339 | * |
| 340 | * if true, return 0 else negative. |
| 341 | */ |
| 342 | int exynos_prime_fd_to_handle(struct exynos_device *dev, int fd, |
| 343 | uint32_t *handle) |
| 344 | { |
| 345 | int ret; |
| 346 | struct drm_prime_handle req = { |
| 347 | .fd = fd, |
| 348 | }; |
| 349 | |
| 350 | ret = drmIoctl(dev->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, &req); |
| 351 | if (ret) { |
| 352 | fprintf(stderr, "failed to mmap[%s].\n", |
| 353 | strerror(errno)); |
| 354 | return ret; |
| 355 | } |
| 356 | |
| 357 | *handle = req.handle; |
| 358 | return 0; |
| 359 | } |
| 360 | |
| 361 | |
| 362 | |
| 363 | /* |
| 364 | * Request Wireless Display connection or disconnection. |
| 365 | * |
| 366 | * @dev: a exynos device object. |
| 367 | * @connect: indicate whether connectoin or disconnection request. |
| 368 | * @ext: indicate whether edid data includes extentions data or not. |
| 369 | * @edid: a pointer to edid data from Wireless Display device. |
| 370 | * |
| 371 | * this interface is used to request Virtual Display driver connection or |
| 372 | * disconnection. for this, user should get a edid data from the Wireless |
| 373 | * Display device and then send that data to kernel driver with connection |
| 374 | * request |
| 375 | * |
| 376 | * if true, return 0 else negative. |
| 377 | */ |
| 378 | int exynos_vidi_connection(struct exynos_device *dev, uint32_t connect, |
| 379 | uint32_t ext, void *edid) |
| 380 | { |
| 381 | struct drm_exynos_vidi_connection req = { |
| 382 | .connection = connect, |
| 383 | .extensions = ext, |
| 384 | .edid = edid, |
| 385 | }; |
| 386 | int ret; |
| 387 | |
| 388 | ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_VIDI_CONNECTION, &req); |
| 389 | if (ret) { |
| 390 | fprintf(stderr, "failed to request vidi connection[%s].\n", |
| 391 | strerror(errno)); |
| 392 | return ret; |
| 393 | } |
| 394 | |
| 395 | return 0; |
| 396 | } |