Greg Hackmann | b85d12a | 2013-11-08 09:40:12 -0800 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include <dirent.h> |
| 18 | #include <errno.h> |
| 19 | #include <fcntl.h> |
| 20 | #include <stdint.h> |
| 21 | #include <stdio.h> |
| 22 | #include <string.h> |
| 23 | |
| 24 | #include <linux/limits.h> |
| 25 | |
| 26 | #include <sys/ioctl.h> |
| 27 | |
| 28 | #include <adf/adf.h> |
| 29 | |
| 30 | #define ADF_BASE_PATH "/dev/" |
| 31 | |
| 32 | static ssize_t adf_find_nodes(const char *pattern, adf_id_t **ids) |
| 33 | { |
| 34 | DIR *dir; |
| 35 | struct dirent *dirent; |
| 36 | size_t n = 0; |
| 37 | ssize_t ret; |
| 38 | adf_id_t *ids_ret = NULL; |
| 39 | |
| 40 | dir = opendir(ADF_BASE_PATH); |
| 41 | if (!dir) |
| 42 | return -errno; |
| 43 | |
| 44 | errno = 0; |
| 45 | while ((dirent = readdir(dir))) { |
| 46 | adf_id_t id; |
| 47 | int matched = sscanf(dirent->d_name, pattern, &id); |
| 48 | |
| 49 | if (matched < 0) { |
| 50 | ret = -errno; |
| 51 | goto done; |
| 52 | } else if (matched != 1) { |
| 53 | continue; |
| 54 | } |
| 55 | |
| 56 | adf_id_t *new_ids = realloc(ids_ret, (n + 1) * sizeof(ids_ret[0])); |
| 57 | if (!new_ids) { |
| 58 | ret = -ENOMEM; |
| 59 | goto done; |
| 60 | } |
| 61 | |
| 62 | ids_ret = new_ids; |
| 63 | ids_ret[n] = id; |
| 64 | n++; |
| 65 | } |
| 66 | if (errno) |
| 67 | ret = -errno; |
| 68 | else |
| 69 | ret = n; |
| 70 | |
| 71 | done: |
| 72 | closedir(dir); |
| 73 | if (ret < 0) |
| 74 | free(ids_ret); |
| 75 | else |
| 76 | *ids = ids_ret; |
| 77 | return ret; |
| 78 | } |
| 79 | |
| 80 | ssize_t adf_devices(adf_id_t **ids) |
| 81 | { |
| 82 | return adf_find_nodes("adf%u", ids); |
| 83 | } |
| 84 | |
| 85 | int adf_device_open(adf_id_t id, int flags, struct adf_device *dev) |
| 86 | { |
| 87 | char filename[64]; |
| 88 | int err; |
| 89 | |
| 90 | dev->id = id; |
| 91 | |
| 92 | snprintf(filename, sizeof(filename), ADF_BASE_PATH "adf%u", id); |
| 93 | dev->fd = open(filename, flags); |
| 94 | if (dev->fd < 0) |
| 95 | return -errno; |
| 96 | |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | void adf_device_close(struct adf_device *dev) |
| 101 | { |
| 102 | if (dev->fd >= 0) |
| 103 | close(dev->fd); |
| 104 | } |
| 105 | |
| 106 | int adf_get_device_data(struct adf_device *dev, struct adf_device_data *data) |
| 107 | { |
| 108 | int err; |
| 109 | int ret = 0; |
| 110 | |
| 111 | memset(data, 0, sizeof(*data)); |
| 112 | |
| 113 | err = ioctl(dev->fd, ADF_GET_DEVICE_DATA, data); |
| 114 | if (err < 0) |
| 115 | return -ENOMEM; |
| 116 | |
| 117 | if (data->n_attachments) { |
| 118 | data->attachments = malloc(sizeof(data->attachments[0]) * |
| 119 | data->n_attachments); |
| 120 | if (!data->attachments) |
| 121 | return -ENOMEM; |
| 122 | } |
| 123 | |
| 124 | if (data->n_allowed_attachments) { |
| 125 | data->allowed_attachments = |
| 126 | malloc(sizeof(data->allowed_attachments[0]) * |
| 127 | data->n_allowed_attachments); |
| 128 | if (!data->allowed_attachments) { |
| 129 | ret = -ENOMEM; |
| 130 | goto done; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | if (data->custom_data_size) { |
| 135 | data->custom_data = malloc(data->custom_data_size); |
| 136 | if (!data->custom_data) { |
| 137 | ret = -ENOMEM; |
| 138 | goto done; |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | err = ioctl(dev->fd, ADF_GET_DEVICE_DATA, data); |
| 143 | if (err < 0) |
| 144 | ret = -errno; |
| 145 | |
| 146 | done: |
| 147 | if (ret < 0) |
| 148 | adf_free_device_data(data); |
| 149 | return ret; |
| 150 | } |
| 151 | |
| 152 | void adf_free_device_data(struct adf_device_data *data) |
| 153 | { |
| 154 | free(data->attachments); |
| 155 | free(data->allowed_attachments); |
| 156 | free(data->custom_data); |
| 157 | } |
| 158 | |
| 159 | int adf_device_post(struct adf_device *dev, |
| 160 | adf_id_t *interfaces, size_t n_interfaces, |
| 161 | struct adf_buffer_config *bufs, size_t n_bufs, |
| 162 | void *custom_data, size_t custom_data_size) |
| 163 | { |
| 164 | int err; |
| 165 | struct adf_post_config data; |
| 166 | |
| 167 | memset(&data, 0, sizeof(data)); |
| 168 | data.interfaces = interfaces; |
| 169 | data.n_interfaces = n_interfaces; |
| 170 | data.bufs = bufs; |
| 171 | data.n_bufs = n_bufs; |
| 172 | data.custom_data = custom_data; |
| 173 | data.custom_data_size = custom_data_size; |
| 174 | |
| 175 | err = ioctl(dev->fd, ADF_POST_CONFIG, &data); |
| 176 | if (err < 0) |
| 177 | return -errno; |
| 178 | |
| 179 | return (int)data.complete_fence; |
| 180 | } |
| 181 | |
| 182 | static int adf_device_attachment(struct adf_device *dev, |
| 183 | adf_id_t overlay_engine, adf_id_t interface, bool attach) |
| 184 | { |
| 185 | int err; |
| 186 | struct adf_attachment_config data; |
| 187 | |
| 188 | memset(&data, 0, sizeof(data)); |
| 189 | data.overlay_engine = overlay_engine; |
| 190 | data.interface = interface; |
| 191 | |
| 192 | err = ioctl(dev->fd, attach ? ADF_ATTACH : ADF_DETACH, &data); |
| 193 | if (err < 0) |
| 194 | return -errno; |
| 195 | |
| 196 | return 0; |
| 197 | } |
| 198 | |
| 199 | int adf_device_attach(struct adf_device *dev, adf_id_t overlay_engine, |
| 200 | adf_id_t interface) |
| 201 | { |
| 202 | return adf_device_attachment(dev, overlay_engine, interface, true); |
| 203 | } |
| 204 | |
| 205 | int adf_device_detach(struct adf_device *dev, adf_id_t overlay_engine, |
| 206 | adf_id_t interface) |
| 207 | { |
| 208 | return adf_device_attachment(dev, overlay_engine, interface, false); |
| 209 | } |
| 210 | |
| 211 | ssize_t adf_interfaces(struct adf_device *dev, adf_id_t **interfaces) |
| 212 | { |
| 213 | char pattern[64]; |
| 214 | |
| 215 | snprintf(pattern, sizeof(pattern), "adf-interface%u.%%u", dev->id); |
| 216 | return adf_find_nodes(pattern, interfaces); |
| 217 | } |
| 218 | |
| 219 | ssize_t adf_interfaces_for_overlay_engine(struct adf_device *dev, |
| 220 | adf_id_t overlay_engine, adf_id_t **interfaces) |
| 221 | { |
| 222 | struct adf_device_data data; |
| 223 | ssize_t n = 0; |
| 224 | ssize_t ret; |
| 225 | adf_id_t *ids_ret = NULL; |
| 226 | |
| 227 | ret = adf_get_device_data(dev, &data); |
| 228 | if (ret < 0) |
| 229 | return ret; |
| 230 | |
| 231 | size_t i; |
| 232 | for (i = 0; i < data.n_allowed_attachments; i++) { |
| 233 | if (data.allowed_attachments[i].overlay_engine != overlay_engine) |
| 234 | continue; |
| 235 | |
| 236 | adf_id_t *new_ids = realloc(ids_ret, (n + 1) * sizeof(ids_ret[0])); |
| 237 | if (!new_ids) { |
| 238 | ret = -ENOMEM; |
| 239 | goto done; |
| 240 | } |
| 241 | |
| 242 | ids_ret = new_ids; |
| 243 | ids_ret[n] = data.allowed_attachments[i].interface; |
| 244 | n++; |
| 245 | } |
| 246 | |
| 247 | ret = n; |
| 248 | |
| 249 | done: |
| 250 | adf_free_device_data(&data); |
| 251 | if (ret < 0) |
| 252 | free(ids_ret); |
| 253 | else |
| 254 | *interfaces = ids_ret; |
| 255 | return ret; |
| 256 | } |
| 257 | |
| 258 | static ssize_t adf_interfaces_filter(struct adf_device *dev, |
| 259 | adf_id_t *in, size_t n_in, adf_id_t **out, |
| 260 | bool (*filter)(struct adf_interface_data *data, __u32 match), |
| 261 | __u32 match) |
| 262 | { |
| 263 | size_t n = 0; |
| 264 | ssize_t ret; |
| 265 | adf_id_t *ids_ret = NULL; |
| 266 | |
| 267 | size_t i; |
| 268 | for (i = 0; i < n_in; i++) { |
| 269 | int fd = adf_interface_open(dev, in[i], O_RDONLY); |
| 270 | if (fd < 0) { |
| 271 | ret = fd; |
| 272 | goto done; |
| 273 | } |
| 274 | |
| 275 | struct adf_interface_data data; |
| 276 | ret = adf_get_interface_data(fd, &data); |
| 277 | close(fd); |
| 278 | if (ret < 0) |
| 279 | goto done; |
| 280 | |
| 281 | if (!filter(&data, match)) |
| 282 | continue; |
| 283 | |
| 284 | adf_id_t *new_ids = realloc(ids_ret, (n + 1) * sizeof(ids_ret[0])); |
| 285 | if (!new_ids) { |
| 286 | ret = -ENOMEM; |
| 287 | goto done; |
| 288 | } |
| 289 | |
| 290 | ids_ret = new_ids; |
| 291 | ids_ret[n] = in[i]; |
| 292 | n++; |
| 293 | } |
| 294 | |
| 295 | ret = n; |
| 296 | |
| 297 | done: |
| 298 | if (ret < 0) |
| 299 | free(ids_ret); |
| 300 | else |
| 301 | *out = ids_ret; |
| 302 | return ret; |
| 303 | } |
| 304 | |
| 305 | static bool adf_interface_type_filter(struct adf_interface_data *data, |
| 306 | __u32 type) |
| 307 | { |
| 308 | return data->type == (enum adf_interface_type)type; |
| 309 | } |
| 310 | |
| 311 | ssize_t adf_interfaces_filter_by_type(struct adf_device *dev, |
| 312 | enum adf_interface_type type, |
| 313 | adf_id_t *in, size_t n_in, adf_id_t **out) |
| 314 | { |
| 315 | return adf_interfaces_filter(dev, in, n_in, out, adf_interface_type_filter, |
| 316 | type); |
| 317 | } |
| 318 | |
| 319 | static bool adf_interface_flags_filter(struct adf_interface_data *data, |
| 320 | __u32 flag) |
| 321 | { |
| 322 | return !!(data->flags & flag); |
| 323 | } |
| 324 | |
| 325 | ssize_t adf_interfaces_filter_by_flag(struct adf_device *dev, __u32 flag, |
| 326 | adf_id_t *in, size_t n_in, adf_id_t **out) |
| 327 | { |
| 328 | return adf_interfaces_filter(dev, in, n_in, out, adf_interface_flags_filter, |
| 329 | flag); |
| 330 | } |
| 331 | |
| 332 | int adf_interface_open(struct adf_device *dev, adf_id_t id, int flags) |
| 333 | { |
| 334 | char filename[64]; |
| 335 | |
| 336 | snprintf(filename, sizeof(filename), ADF_BASE_PATH "adf-interface%u.%u", |
| 337 | dev->id, id); |
| 338 | |
| 339 | int fd = open(filename, flags); |
| 340 | if (fd < 0) |
| 341 | return -errno; |
| 342 | return fd; |
| 343 | } |
| 344 | |
| 345 | int adf_get_interface_data(int fd, struct adf_interface_data *data) |
| 346 | { |
| 347 | int err; |
| 348 | int ret = 0; |
| 349 | |
| 350 | memset(data, 0, sizeof(*data)); |
| 351 | |
| 352 | err = ioctl(fd, ADF_GET_INTERFACE_DATA, data); |
| 353 | if (err < 0) |
| 354 | return -errno; |
| 355 | |
| 356 | if (data->n_available_modes) { |
| 357 | data->available_modes = malloc(sizeof(data->available_modes[0]) * |
| 358 | data->n_available_modes); |
| 359 | if (!data->available_modes) |
| 360 | return -ENOMEM; |
| 361 | } |
| 362 | |
| 363 | if (data->custom_data_size) { |
| 364 | data->custom_data = malloc(data->custom_data_size); |
| 365 | if (!data->custom_data) { |
| 366 | ret = -ENOMEM; |
| 367 | goto done; |
| 368 | } |
| 369 | } |
| 370 | |
| 371 | err = ioctl(fd, ADF_GET_INTERFACE_DATA, data); |
| 372 | if (err < 0) |
| 373 | ret = -errno; |
| 374 | |
| 375 | done: |
| 376 | if (ret < 0) |
| 377 | adf_free_interface_data(data); |
| 378 | return ret; |
| 379 | } |
| 380 | |
| 381 | void adf_free_interface_data(struct adf_interface_data *data) |
| 382 | { |
| 383 | free(data->available_modes); |
| 384 | free(data->custom_data); |
| 385 | } |
| 386 | |
| 387 | int adf_interface_blank(int fd, __u8 mode) |
| 388 | { |
| 389 | int err = ioctl(fd, ADF_BLANK, mode); |
| 390 | if (err < 0) |
| 391 | return -errno; |
| 392 | return 0; |
| 393 | } |
| 394 | |
| 395 | int adf_interface_set_mode(int fd, struct drm_mode_modeinfo *mode) |
| 396 | { |
| 397 | int err = ioctl(fd, ADF_SET_MODE, mode); |
| 398 | if (err < 0) |
| 399 | return -errno; |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | int adf_interface_simple_buffer_alloc(int fd, __u32 w, __u32 h, |
| 404 | __u32 format, __u32 *offset, __u32 *pitch) |
| 405 | { |
| 406 | int err; |
| 407 | struct adf_simple_buffer_alloc data; |
| 408 | |
| 409 | memset(&data, 0, sizeof(data)); |
| 410 | data.w = w; |
| 411 | data.h = h; |
| 412 | data.format = format; |
| 413 | |
| 414 | err = ioctl(fd, ADF_SIMPLE_BUFFER_ALLOC, &data); |
| 415 | if (err < 0) |
| 416 | return -errno; |
| 417 | |
| 418 | *offset = data.offset; |
| 419 | *pitch = data.pitch; |
| 420 | return (int)data.fd; |
| 421 | } |
| 422 | |
| 423 | int adf_interface_simple_post(int fd, __u32 overlay_engine, |
| 424 | __u32 w, __u32 h, __u32 format, int buf_fd, __u32 offset, |
| 425 | __u32 pitch, int acquire_fence) |
| 426 | { |
| 427 | int ret; |
| 428 | struct adf_simple_post_config data; |
| 429 | |
| 430 | memset(&data, 0, sizeof(data)); |
| 431 | data.buf.overlay_engine = overlay_engine; |
| 432 | data.buf.w = w; |
| 433 | data.buf.h = h; |
| 434 | data.buf.format = format; |
| 435 | data.buf.fd[0] = buf_fd; |
| 436 | data.buf.offset[0] = offset; |
| 437 | data.buf.pitch[0] = pitch; |
| 438 | data.buf.n_planes = 1; |
| 439 | data.buf.acquire_fence = acquire_fence; |
| 440 | |
| 441 | ret = ioctl(fd, ADF_SIMPLE_POST_CONFIG, &data); |
| 442 | if (ret < 0) |
| 443 | return -errno; |
| 444 | |
| 445 | return (int)data.complete_fence; |
| 446 | } |
| 447 | |
| 448 | ssize_t adf_overlay_engines(struct adf_device *dev, adf_id_t **overlay_engines) |
| 449 | { |
| 450 | char pattern[64]; |
| 451 | |
| 452 | snprintf(pattern, sizeof(pattern), "adf-overlay-engine%u.%%u", dev->id); |
| 453 | return adf_find_nodes(pattern, overlay_engines); |
| 454 | } |
| 455 | |
| 456 | ssize_t adf_overlay_engines_for_interface(struct adf_device *dev, |
| 457 | adf_id_t interface, adf_id_t **overlay_engines) |
| 458 | { |
| 459 | struct adf_device_data data; |
| 460 | ssize_t n = 0; |
| 461 | ssize_t ret; |
| 462 | adf_id_t *ids_ret = NULL; |
| 463 | |
| 464 | ret = adf_get_device_data(dev, &data); |
| 465 | if (ret < 0) |
| 466 | return ret; |
| 467 | |
| 468 | size_t i; |
| 469 | for (i = 0; i < data.n_allowed_attachments; i++) { |
| 470 | if (data.allowed_attachments[i].interface != interface) |
| 471 | continue; |
| 472 | |
| 473 | adf_id_t *new_ids = realloc(ids_ret, (n + 1) * sizeof(ids_ret[0])); |
| 474 | if (!new_ids) { |
| 475 | ret = -ENOMEM; |
| 476 | goto done; |
| 477 | } |
| 478 | |
| 479 | ids_ret = new_ids; |
| 480 | ids_ret[n] = data.allowed_attachments[i].overlay_engine; |
| 481 | n++; |
| 482 | } |
| 483 | |
| 484 | ret = n; |
| 485 | |
| 486 | done: |
| 487 | adf_free_device_data(&data); |
| 488 | if (ret < 0) |
| 489 | free(ids_ret); |
| 490 | else |
| 491 | *overlay_engines = ids_ret; |
| 492 | return ret; |
| 493 | } |
| 494 | |
| 495 | static ssize_t adf_overlay_engines_filter(struct adf_device *dev, |
| 496 | adf_id_t *in, size_t n_in, adf_id_t **out, |
| 497 | bool (*filter)(struct adf_overlay_engine_data *data, __u32 match), |
| 498 | __u32 match) |
| 499 | { |
| 500 | size_t n = 0; |
| 501 | ssize_t ret; |
| 502 | adf_id_t *ids_ret = NULL; |
| 503 | |
| 504 | size_t i; |
| 505 | for (i = 0; i < n_in; i++) { |
| 506 | int fd = adf_overlay_engine_open(dev, in[i], O_RDONLY); |
| 507 | if (fd < 0) { |
| 508 | ret = fd; |
| 509 | goto done; |
| 510 | } |
| 511 | |
| 512 | struct adf_overlay_engine_data data; |
| 513 | ret = adf_get_overlay_engine_data(fd, &data); |
| 514 | close(fd); |
| 515 | if (ret < 0) |
| 516 | goto done; |
| 517 | |
| 518 | if (!filter(&data, match)) |
| 519 | continue; |
| 520 | |
| 521 | adf_id_t *new_ids = realloc(ids_ret, (n + 1) * sizeof(ids_ret[0])); |
| 522 | if (!new_ids) { |
| 523 | ret = -ENOMEM; |
| 524 | goto done; |
| 525 | } |
| 526 | |
| 527 | ids_ret = new_ids; |
| 528 | ids_ret[n] = in[i]; |
| 529 | n++; |
| 530 | } |
| 531 | |
| 532 | ret = n; |
| 533 | |
| 534 | done: |
| 535 | if (ret < 0) |
| 536 | free(ids_ret); |
| 537 | else |
| 538 | *out = ids_ret; |
| 539 | return ret; |
| 540 | } |
| 541 | |
| 542 | static bool adf_overlay_engine_format_filter(struct adf_overlay_engine_data *data, |
| 543 | __u32 format) |
| 544 | { |
| 545 | size_t i; |
| 546 | for (i = 0; i < data->n_supported_formats; i++) |
| 547 | if (data->supported_formats[i] == format) |
| 548 | return true; |
| 549 | return false; |
| 550 | } |
| 551 | |
| 552 | ssize_t adf_overlay_engines_filter_by_format(struct adf_device *dev, |
| 553 | __u32 format, adf_id_t *in, size_t n_in, adf_id_t **out) |
| 554 | { |
| 555 | return adf_overlay_engines_filter(dev, in, n_in, out, |
| 556 | adf_overlay_engine_format_filter, format); |
| 557 | } |
| 558 | |
| 559 | int adf_overlay_engine_open(struct adf_device *dev, adf_id_t id, int flags) |
| 560 | { |
| 561 | char filename[64]; |
| 562 | |
| 563 | snprintf(filename, sizeof(filename), |
| 564 | ADF_BASE_PATH "adf-overlay-engine%u.%u", dev->id, id); |
| 565 | |
| 566 | int fd = open(filename, flags); |
| 567 | if (fd < 0) |
| 568 | return -errno; |
| 569 | return fd; |
| 570 | } |
| 571 | |
| 572 | int adf_get_overlay_engine_data(int fd, struct adf_overlay_engine_data *data) |
| 573 | { |
| 574 | int err; |
| 575 | int ret = 0; |
| 576 | |
| 577 | memset(data, 0, sizeof(*data)); |
| 578 | |
| 579 | err = ioctl(fd, ADF_GET_OVERLAY_ENGINE_DATA, data); |
| 580 | if (err < 0) |
| 581 | return -errno; |
| 582 | |
| 583 | if (data->n_supported_formats) { |
| 584 | data->supported_formats = malloc(sizeof(data->supported_formats[0]) * |
| 585 | data->n_supported_formats); |
| 586 | if (!data->supported_formats) |
| 587 | return -ENOMEM; |
| 588 | } |
| 589 | |
| 590 | if (data->custom_data_size) { |
| 591 | data->custom_data = malloc(data->custom_data_size); |
| 592 | if (!data->custom_data) { |
| 593 | ret = -ENOMEM; |
| 594 | goto done; |
| 595 | } |
| 596 | } |
| 597 | |
| 598 | err = ioctl(fd, ADF_GET_OVERLAY_ENGINE_DATA, data); |
| 599 | if (err < 0) |
| 600 | ret = -errno; |
| 601 | |
| 602 | done: |
| 603 | if (ret < 0) |
| 604 | adf_free_overlay_engine_data(data); |
| 605 | return ret; |
| 606 | } |
| 607 | |
| 608 | void adf_free_overlay_engine_data(struct adf_overlay_engine_data *data) |
| 609 | { |
| 610 | free(data->supported_formats); |
| 611 | free(data->custom_data); |
| 612 | } |
| 613 | |
| 614 | bool adf_overlay_engine_supports_format(int fd, __u32 format) |
| 615 | { |
| 616 | struct adf_overlay_engine_data data; |
| 617 | bool ret = false; |
| 618 | size_t i; |
| 619 | |
| 620 | int err = adf_get_overlay_engine_data(fd, &data); |
| 621 | if (err < 0) |
| 622 | return false; |
| 623 | |
| 624 | for (i = 0; i < data.n_supported_formats; i++) { |
| 625 | if (data.supported_formats[i] == format) { |
| 626 | ret = true; |
| 627 | break; |
| 628 | } |
| 629 | } |
| 630 | |
| 631 | adf_free_overlay_engine_data(&data); |
| 632 | return ret; |
| 633 | } |
| 634 | |
| 635 | int adf_set_event(int fd, enum adf_event_type type, bool enabled) |
| 636 | { |
| 637 | struct adf_set_event data; |
| 638 | |
| 639 | data.type = type; |
| 640 | data.enabled = enabled; |
| 641 | |
| 642 | int err = ioctl(fd, ADF_SET_EVENT, &data); |
| 643 | if (err < 0) |
| 644 | return -errno; |
| 645 | return 0; |
| 646 | } |
| 647 | |
| 648 | int adf_read_event(int fd, struct adf_event **event) |
| 649 | { |
| 650 | struct adf_event header; |
| 651 | struct { |
| 652 | struct adf_event base; |
| 653 | uint8_t data[0]; |
| 654 | } *event_ret; |
| 655 | size_t data_size; |
| 656 | int ret = 0; |
| 657 | |
| 658 | int err = read(fd, &header, sizeof(header)); |
| 659 | if (err < 0) |
| 660 | return -errno; |
| 661 | if ((size_t)err < sizeof(header)) |
| 662 | return -EIO; |
| 663 | if (header.length < sizeof(header)) |
| 664 | return -EIO; |
| 665 | |
| 666 | event_ret = malloc(header.length); |
| 667 | if (!event_ret) |
| 668 | return -ENOMEM; |
| 669 | data_size = header.length - sizeof(header); |
| 670 | |
| 671 | memcpy(event_ret, &header, sizeof(header)); |
| 672 | ssize_t read_size = read(fd, &event_ret->data, data_size); |
| 673 | if (read_size < 0) { |
| 674 | ret = -errno; |
| 675 | goto done; |
| 676 | } |
| 677 | if ((size_t)read_size < data_size) { |
| 678 | ret = -EIO; |
| 679 | goto done; |
| 680 | } |
| 681 | |
| 682 | *event = &event_ret->base; |
| 683 | |
| 684 | done: |
| 685 | if (ret < 0) |
| 686 | free(event_ret); |
| 687 | return ret; |
| 688 | } |
| 689 | |
| 690 | void adf_format_str(__u32 format, char buf[ADF_FORMAT_STR_SIZE]) |
| 691 | { |
| 692 | buf[0] = format & 0xFF; |
| 693 | buf[1] = (format >> 8) & 0xFF; |
| 694 | buf[2] = (format >> 16) & 0xFF; |
| 695 | buf[3] = (format >> 24) & 0xFF; |
| 696 | buf[4] = '\0'; |
| 697 | } |