Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2016 The Chromium OS Authors. All rights reserved. |
| 3 | * Use of this source code is governed by a BSD-style license that can be |
| 4 | * found in the LICENSE file. |
| 5 | */ |
| 6 | #include <assert.h> |
| 7 | #include <fcntl.h> |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 8 | #include <pthread.h> |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 9 | #include <stdint.h> |
| 10 | #include <stdio.h> |
| 11 | #include <stdlib.h> |
| 12 | #include <string.h> |
Gurchetan Singh | ef92053 | 2016-08-12 16:38:25 -0700 | [diff] [blame] | 13 | #include <sys/mman.h> |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 14 | #include <xf86drm.h> |
| 15 | |
| 16 | #include "drv_priv.h" |
| 17 | #include "helpers.h" |
| 18 | #include "util.h" |
| 19 | |
Akshu Agrawal | 0337d9b | 2016-07-28 15:35:45 +0530 | [diff] [blame] | 20 | #ifdef DRV_AMDGPU |
| 21 | extern struct backend backend_amdgpu; |
| 22 | #endif |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 23 | extern struct backend backend_cirrus; |
| 24 | extern struct backend backend_evdi; |
| 25 | #ifdef DRV_EXYNOS |
| 26 | extern struct backend backend_exynos; |
| 27 | #endif |
| 28 | extern struct backend backend_gma500; |
| 29 | #ifdef DRV_I915 |
| 30 | extern struct backend backend_i915; |
| 31 | #endif |
| 32 | #ifdef DRV_MARVELL |
| 33 | extern struct backend backend_marvell; |
| 34 | #endif |
| 35 | #ifdef DRV_MEDIATEK |
| 36 | extern struct backend backend_mediatek; |
| 37 | #endif |
| 38 | #ifdef DRV_ROCKCHIP |
| 39 | extern struct backend backend_rockchip; |
| 40 | #endif |
| 41 | #ifdef DRV_TEGRA |
| 42 | extern struct backend backend_tegra; |
| 43 | #endif |
| 44 | extern struct backend backend_udl; |
| 45 | extern struct backend backend_virtio_gpu; |
| 46 | |
| 47 | static struct backend *drv_get_backend(int fd) |
| 48 | { |
| 49 | drmVersionPtr drm_version; |
| 50 | unsigned int i; |
| 51 | |
| 52 | drm_version = drmGetVersion(fd); |
| 53 | |
| 54 | if (!drm_version) |
| 55 | return NULL; |
| 56 | |
| 57 | struct backend *backend_list[] = { |
Akshu Agrawal | 0337d9b | 2016-07-28 15:35:45 +0530 | [diff] [blame] | 58 | #ifdef DRV_AMDGPU |
| 59 | &backend_amdgpu, |
| 60 | #endif |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 61 | &backend_cirrus, |
| 62 | &backend_evdi, |
| 63 | #ifdef DRV_EXYNOS |
| 64 | &backend_exynos, |
| 65 | #endif |
| 66 | &backend_gma500, |
| 67 | #ifdef DRV_I915 |
| 68 | &backend_i915, |
| 69 | #endif |
| 70 | #ifdef DRV_MARVELL |
| 71 | &backend_marvell, |
| 72 | #endif |
| 73 | #ifdef DRV_MEDIATEK |
| 74 | &backend_mediatek, |
| 75 | #endif |
| 76 | #ifdef DRV_ROCKCHIP |
| 77 | &backend_rockchip, |
| 78 | #endif |
| 79 | #ifdef DRV_TEGRA |
| 80 | &backend_tegra, |
| 81 | #endif |
| 82 | &backend_udl, |
| 83 | &backend_virtio_gpu, |
| 84 | }; |
| 85 | |
| 86 | for(i = 0; i < ARRAY_SIZE(backend_list); i++) |
| 87 | if (!strcmp(drm_version->name, backend_list[i]->name)) { |
| 88 | drmFreeVersion(drm_version); |
| 89 | return backend_list[i]; |
| 90 | } |
| 91 | |
| 92 | drmFreeVersion(drm_version); |
| 93 | return NULL; |
| 94 | } |
| 95 | |
| 96 | struct driver *drv_create(int fd) |
| 97 | { |
| 98 | struct driver *drv; |
| 99 | int ret; |
| 100 | |
| 101 | drv = (struct driver *) calloc(1, sizeof(*drv)); |
| 102 | |
| 103 | if (!drv) |
| 104 | return NULL; |
| 105 | |
| 106 | drv->fd = fd; |
| 107 | drv->backend = drv_get_backend(fd); |
| 108 | |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 109 | if (!drv->backend) |
| 110 | goto free_driver; |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 111 | |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 112 | if (pthread_mutex_init(&drv->table_lock, NULL)) |
| 113 | goto free_driver; |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 114 | |
| 115 | drv->buffer_table = drmHashCreate(); |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 116 | if (!drv->buffer_table) |
| 117 | goto free_lock; |
| 118 | |
| 119 | drv->map_table = drmHashCreate(); |
| 120 | if (!drv->map_table) |
| 121 | goto free_buffer_table; |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 122 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 123 | if (drv->backend->init) { |
| 124 | ret = drv->backend->init(drv); |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 125 | if (ret) |
| 126 | goto free_map_table; |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 127 | } |
| 128 | |
| 129 | return drv; |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 130 | |
| 131 | free_map_table: |
| 132 | drmHashDestroy(drv->map_table); |
| 133 | free_buffer_table: |
| 134 | drmHashDestroy(drv->buffer_table); |
| 135 | free_lock: |
| 136 | pthread_mutex_destroy(&drv->table_lock); |
| 137 | free_driver: |
| 138 | free(drv); |
| 139 | return NULL; |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 140 | } |
| 141 | |
| 142 | void drv_destroy(struct driver *drv) |
| 143 | { |
| 144 | if (drv->backend->close) |
| 145 | drv->backend->close(drv); |
| 146 | |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 147 | pthread_mutex_destroy(&drv->table_lock); |
| 148 | drmHashDestroy(drv->buffer_table); |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 149 | drmHashDestroy(drv->map_table); |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 150 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 151 | free(drv); |
| 152 | } |
| 153 | |
| 154 | int drv_get_fd(struct driver *drv) |
| 155 | { |
| 156 | return drv->fd; |
| 157 | } |
| 158 | |
| 159 | const char * |
| 160 | drv_get_name(struct driver *drv) |
| 161 | { |
| 162 | return drv->backend->name; |
| 163 | } |
| 164 | |
| 165 | int drv_is_format_supported(struct driver *drv, drv_format_t format, |
| 166 | uint64_t usage) |
| 167 | { |
| 168 | unsigned int i; |
| 169 | |
| 170 | if (format == DRV_FORMAT_NONE || usage == DRV_BO_USE_NONE) |
| 171 | return 0; |
| 172 | |
| 173 | for (i = 0 ; i < ARRAY_SIZE(drv->backend->format_list); i++) |
| 174 | { |
| 175 | if (!drv->backend->format_list[i].format) |
| 176 | break; |
| 177 | |
| 178 | if (drv->backend->format_list[i].format == format && |
| 179 | (drv->backend->format_list[i].usage & usage) == usage) |
| 180 | return 1; |
| 181 | } |
| 182 | |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | struct bo *drv_bo_new(struct driver *drv, uint32_t width, uint32_t height, |
| 187 | drv_format_t format) |
| 188 | { |
| 189 | |
| 190 | struct bo *bo; |
| 191 | bo = (struct bo *) calloc(1, sizeof(*bo)); |
| 192 | |
| 193 | if (!bo) |
| 194 | return NULL; |
| 195 | |
| 196 | bo->drv = drv; |
| 197 | bo->width = width; |
| 198 | bo->height = height; |
| 199 | bo->format = format; |
| 200 | bo->num_planes = drv_num_planes_from_format(format); |
| 201 | |
| 202 | if (!bo->num_planes) { |
| 203 | free(bo); |
| 204 | return NULL; |
| 205 | } |
| 206 | |
| 207 | return bo; |
| 208 | } |
| 209 | |
| 210 | struct bo *drv_bo_create(struct driver *drv, uint32_t width, uint32_t height, |
| 211 | drv_format_t format, uint64_t flags) |
| 212 | { |
| 213 | int ret; |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 214 | size_t plane; |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 215 | struct bo *bo; |
| 216 | |
| 217 | bo = drv_bo_new(drv, width, height, format); |
| 218 | |
| 219 | if (!bo) |
| 220 | return NULL; |
| 221 | |
| 222 | ret = drv->backend->bo_create(bo, width, height, format, flags); |
| 223 | |
| 224 | if (ret) { |
| 225 | free(bo); |
| 226 | return NULL; |
| 227 | } |
| 228 | |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 229 | pthread_mutex_lock(&drv->table_lock); |
| 230 | |
| 231 | for (plane = 0; plane < bo->num_planes; plane++) |
| 232 | drv_increment_reference_count(drv, bo, plane); |
| 233 | |
| 234 | pthread_mutex_unlock(&drv->table_lock); |
| 235 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 236 | return bo; |
| 237 | } |
| 238 | |
| 239 | void drv_bo_destroy(struct bo *bo) |
| 240 | { |
Gurchetan Singh | 1647fbe | 2016-08-03 17:14:55 -0700 | [diff] [blame] | 241 | size_t plane; |
| 242 | uintptr_t total = 0; |
| 243 | struct driver *drv = bo->drv; |
| 244 | |
| 245 | pthread_mutex_lock(&drv->table_lock); |
| 246 | |
| 247 | for (plane = 0; plane < bo->num_planes; plane++) |
| 248 | drv_decrement_reference_count(drv, bo, plane); |
| 249 | |
| 250 | for (plane = 0; plane < bo->num_planes; plane++) |
| 251 | total += drv_get_reference_count(drv, bo, plane); |
| 252 | |
| 253 | pthread_mutex_unlock(&drv->table_lock); |
| 254 | |
| 255 | if (total == 0) |
| 256 | bo->drv->backend->bo_destroy(bo); |
| 257 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 258 | free(bo); |
| 259 | } |
| 260 | |
| 261 | struct bo *drv_bo_import(struct driver *drv, struct drv_import_fd_data *data) |
| 262 | { |
| 263 | int ret; |
Gurchetan Singh | b72badb | 2016-08-19 16:26:46 -0700 | [diff] [blame] | 264 | size_t plane; |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 265 | struct bo *bo; |
| 266 | struct drm_prime_handle prime_handle; |
| 267 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 268 | bo = drv_bo_new(drv, data->width, data->height, data->format); |
| 269 | |
Gurchetan Singh | b72badb | 2016-08-19 16:26:46 -0700 | [diff] [blame] | 270 | if (!bo) |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 271 | return NULL; |
Gurchetan Singh | b72badb | 2016-08-19 16:26:46 -0700 | [diff] [blame] | 272 | |
| 273 | for (plane = 0; plane < bo->num_planes; plane++) { |
| 274 | |
| 275 | memset(&prime_handle, 0, sizeof(prime_handle)); |
| 276 | prime_handle.fd = data->fds[plane]; |
| 277 | |
| 278 | ret = drmIoctl(drv->fd, DRM_IOCTL_PRIME_FD_TO_HANDLE, |
| 279 | &prime_handle); |
| 280 | |
| 281 | if (ret) { |
| 282 | fprintf(stderr, "drv: DRM_IOCTL_PRIME_FD_TO_HANDLE failed " |
| 283 | "(fd=%u)\n", prime_handle.fd); |
| 284 | |
| 285 | if (plane > 0) { |
| 286 | bo->num_planes = plane; |
| 287 | drv_bo_destroy(bo); |
| 288 | } else { |
| 289 | free(bo); |
| 290 | } |
| 291 | |
| 292 | return NULL; |
| 293 | } |
| 294 | |
| 295 | bo->handles[plane].u32 = prime_handle.handle; |
| 296 | bo->strides[plane] = data->strides[plane]; |
| 297 | bo->offsets[plane] = data->offsets[plane]; |
| 298 | bo->sizes[plane] = data->sizes[plane]; |
Gurchetan Singh | 2e786ad | 2016-08-24 18:31:23 -0700 | [diff] [blame] | 299 | bo->total_size += data->sizes[plane]; |
Gurchetan Singh | b72badb | 2016-08-19 16:26:46 -0700 | [diff] [blame] | 300 | |
| 301 | pthread_mutex_lock(&drv->table_lock); |
| 302 | drv_increment_reference_count(drv, bo, plane); |
| 303 | pthread_mutex_unlock(&drv->table_lock); |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 304 | } |
| 305 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 306 | return bo; |
| 307 | } |
| 308 | |
Gurchetan Singh | 1a31e60 | 2016-10-06 10:58:00 -0700 | [diff] [blame] | 309 | void *drv_bo_map(struct bo *bo, uint32_t x, uint32_t y, uint32_t width, |
| 310 | uint32_t height, uint32_t flags, void **map_data, size_t plane) |
| 311 | { |
| 312 | void *ptr; |
| 313 | uint8_t *addr; |
| 314 | size_t offset; |
| 315 | struct map_info *data; |
| 316 | |
| 317 | assert(width > 0); |
| 318 | assert(height > 0); |
| 319 | assert(x + width <= drv_bo_get_width(bo)); |
| 320 | assert(y + height <= drv_bo_get_height(bo)); |
| 321 | |
| 322 | pthread_mutex_lock(&bo->drv->table_lock); |
| 323 | |
| 324 | if (!drmHashLookup(bo->drv->map_table, bo->handles[plane].u32, &ptr)) { |
| 325 | data = (struct map_info *) ptr; |
| 326 | data->refcount++; |
| 327 | goto success; |
| 328 | } |
| 329 | |
| 330 | data = calloc(1, sizeof(*data)); |
| 331 | addr = bo->drv->backend->bo_map(bo, data, plane); |
| 332 | if (addr == MAP_FAILED) { |
| 333 | *map_data = NULL; |
| 334 | free(data); |
| 335 | pthread_mutex_unlock(&bo->drv->table_lock); |
| 336 | return MAP_FAILED; |
| 337 | } |
| 338 | |
| 339 | data->refcount = 1; |
| 340 | data->addr = addr; |
| 341 | data->handle = bo->handles[plane].u32; |
| 342 | drmHashInsert(bo->drv->buffer_table, bo->handles[plane].u32, |
| 343 | (void *) data); |
| 344 | |
| 345 | success: |
| 346 | *map_data = (void *) data; |
| 347 | offset = drv_bo_get_plane_stride(bo, plane) * y; |
| 348 | offset += drv_stride_from_format(bo->format, x, plane); |
| 349 | addr = (uint8_t *) data->addr; |
| 350 | addr += drv_bo_get_plane_offset(bo, plane) + offset; |
| 351 | pthread_mutex_unlock(&bo->drv->table_lock); |
| 352 | |
| 353 | return (void *) addr; |
| 354 | } |
| 355 | |
| 356 | int drv_bo_unmap(struct bo *bo, void *map_data) |
| 357 | { |
| 358 | struct map_info *data = map_data; |
| 359 | int ret = 0; |
| 360 | |
| 361 | assert(data); |
| 362 | assert(data->refcount >= 0); |
| 363 | |
| 364 | pthread_mutex_lock(&bo->drv->table_lock); |
| 365 | |
| 366 | if (!--data->refcount) { |
| 367 | ret = munmap(data->addr, data->length); |
| 368 | drmHashDelete(bo->drv->map_table, data->handle); |
| 369 | free(data); |
| 370 | } |
| 371 | |
| 372 | pthread_mutex_unlock(&bo->drv->table_lock); |
| 373 | |
| 374 | return ret; |
| 375 | } |
| 376 | |
Gurchetan Singh | 46faf6b | 2016-08-05 14:40:07 -0700 | [diff] [blame] | 377 | uint32_t drv_bo_get_width(struct bo *bo) |
| 378 | { |
| 379 | return bo->width; |
| 380 | } |
| 381 | |
| 382 | uint32_t drv_bo_get_height(struct bo *bo) |
| 383 | { |
| 384 | return bo->height; |
| 385 | } |
| 386 | |
| 387 | uint32_t drv_bo_get_stride_or_tiling(struct bo *bo) |
| 388 | { |
| 389 | return bo->tiling ? bo->tiling : drv_bo_get_plane_stride(bo, 0); |
| 390 | } |
| 391 | |
| 392 | size_t drv_bo_get_num_planes(struct bo *bo) |
| 393 | { |
| 394 | return bo->num_planes; |
| 395 | } |
| 396 | |
| 397 | union bo_handle drv_bo_get_plane_handle(struct bo *bo, size_t plane) |
| 398 | { |
| 399 | return bo->handles[plane]; |
| 400 | } |
| 401 | |
| 402 | #ifndef DRM_RDWR |
| 403 | #define DRM_RDWR O_RDWR |
| 404 | #endif |
| 405 | |
| 406 | int drv_bo_get_plane_fd(struct bo *bo, size_t plane) |
| 407 | { |
| 408 | |
| 409 | int ret, fd; |
| 410 | assert(plane < bo->num_planes); |
| 411 | |
| 412 | ret = drmPrimeHandleToFD(bo->drv->fd, bo->handles[plane].u32, |
| 413 | DRM_CLOEXEC | DRM_RDWR, &fd); |
| 414 | |
| 415 | return (ret) ? ret : fd; |
| 416 | |
| 417 | } |
| 418 | |
| 419 | uint32_t drv_bo_get_plane_offset(struct bo *bo, size_t plane) |
| 420 | { |
| 421 | assert(plane < bo->num_planes); |
| 422 | return bo->offsets[plane]; |
| 423 | } |
| 424 | |
| 425 | uint32_t drv_bo_get_plane_size(struct bo *bo, size_t plane) |
| 426 | { |
| 427 | assert(plane < bo->num_planes); |
| 428 | return bo->sizes[plane]; |
| 429 | } |
| 430 | |
| 431 | uint32_t drv_bo_get_plane_stride(struct bo *bo, size_t plane) |
| 432 | { |
| 433 | assert(plane < bo->num_planes); |
| 434 | return bo->strides[plane]; |
| 435 | } |
| 436 | |
| 437 | uint64_t drv_bo_get_plane_format_modifier(struct bo *bo, size_t plane) |
| 438 | { |
| 439 | assert(plane < bo->num_planes); |
| 440 | return bo->format_modifiers[plane]; |
| 441 | } |
Gurchetan Singh | bfba8c2 | 2016-08-16 17:57:10 -0700 | [diff] [blame] | 442 | |
Gurchetan Singh | 2e786ad | 2016-08-24 18:31:23 -0700 | [diff] [blame] | 443 | drv_format_t drv_bo_get_format(struct bo *bo) |
| 444 | { |
| 445 | return bo->format; |
| 446 | } |
| 447 | |
Gurchetan Singh | bfba8c2 | 2016-08-16 17:57:10 -0700 | [diff] [blame] | 448 | drv_format_t drv_resolve_format(struct driver *drv, drv_format_t format) |
| 449 | { |
| 450 | if (drv->backend->resolve_format) |
| 451 | return drv->backend->resolve_format(format); |
| 452 | |
| 453 | return format; |
| 454 | } |
Gurchetan Singh | 2e786ad | 2016-08-24 18:31:23 -0700 | [diff] [blame] | 455 | |
| 456 | /* |
| 457 | * This function returns the stride for a given format, width and plane. |
| 458 | */ |
| 459 | int drv_stride_from_format(uint32_t format, uint32_t width, size_t plane) |
| 460 | { |
| 461 | /* Get stride of the first plane */ |
| 462 | int stride = width * DIV_ROUND_UP(drv_bpp_from_format(format, 0), 8); |
| 463 | |
| 464 | /* |
| 465 | * Only downsample for certain multiplanar formats which are not |
| 466 | * interleaved and have horizontal subsampling. Only formats supported |
| 467 | * by our drivers are listed here -- add more as needed. |
| 468 | */ |
| 469 | if (plane != 0) { |
| 470 | switch (format) { |
| 471 | case DRV_FORMAT_YVU420: |
| 472 | stride = stride / 2; |
| 473 | break; |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | return stride; |
| 478 | } |
| 479 | |
| 480 | uint32_t drv_num_buffers_per_bo(struct bo *bo) |
| 481 | { |
| 482 | uint32_t count = 0; |
| 483 | size_t plane, p; |
| 484 | |
| 485 | for (plane = 0; plane < bo->num_planes; plane++) { |
| 486 | for (p = 0; p < plane; p++) |
| 487 | if (bo->handles[p].u32 == bo->handles[plane].u32) |
| 488 | break; |
| 489 | if (p == plane) |
| 490 | count++; |
| 491 | } |
| 492 | |
| 493 | return count; |
| 494 | } |